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Latest 25 from a total of 194 transactions
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Buy | 19270623 | 160 days ago | IN | 0.08699999 ETH | 0.0062183 | ||||
Buy | 19254594 | 162 days ago | IN | 0.03579999 ETH | 0.00361137 | ||||
Buy | 19156726 | 176 days ago | IN | 1.29999999 ETH | 0.0027122 | ||||
Buy | 19152111 | 177 days ago | IN | 0.11795486 ETH | 0.00255984 | ||||
Buy | 19151059 | 177 days ago | IN | 0.49999999 ETH | 0.00214544 | ||||
Buy | 19150550 | 177 days ago | IN | 0.27 ETH | 0.00299376 | ||||
Buy | 19122093 | 181 days ago | IN | 0.46999999 ETH | 0.00361341 | ||||
Buy | 18993247 | 199 days ago | IN | 0.09999999 ETH | 0.0022564 | ||||
Buy | 18993232 | 199 days ago | IN | 1.6 ETH | 0.00194157 | ||||
Buy | 18986582 | 200 days ago | IN | 0.4 ETH | 0.00361658 | ||||
Buy | 18906223 | 211 days ago | IN | 0.225 ETH | 0.00251313 | ||||
Buy | 18895454 | 213 days ago | IN | 0.69999999 ETH | 0.00243063 | ||||
Buy | 18895391 | 213 days ago | IN | 1.99999999 ETH | 0.00254022 | ||||
Buy | 18885797 | 214 days ago | IN | 1 ETH | 0.00394709 | ||||
Buy | 18885756 | 214 days ago | IN | 0.4 ETH | 0.00500486 | ||||
Buy | 18834446 | 221 days ago | IN | 0.09999999 ETH | 0.00680751 | ||||
Buy | 18801246 | 226 days ago | IN | 1.49999998 ETH | 0.00645942 | ||||
Buy | 18787410 | 228 days ago | IN | 0.9 ETH | 0.00745417 | ||||
Buy | 18785442 | 228 days ago | IN | 2.2 ETH | 0.00801568 | ||||
Buy | 18783730 | 229 days ago | IN | 1 ETH | 0.00596765 | ||||
Buy | 18766390 | 231 days ago | IN | 0.09999999 ETH | 0.00660516 | ||||
Buy | 18720527 | 237 days ago | IN | 0.17999999 ETH | 0.01352486 | ||||
Buy | 18697779 | 241 days ago | IN | 1.49999999 ETH | 0.00711812 | ||||
Buy | 18651636 | 247 days ago | IN | 0.41499999 ETH | 0.00315948 | ||||
Buy | 18569120 | 259 days ago | IN | 0.005 ETH | 0.00427988 |
Latest 25 internal transactions (View All)
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19270623 | 160 days ago | 0.08699999 ETH | ||||
19254594 | 162 days ago | 0.03579999 ETH | ||||
19156726 | 176 days ago | 1.29999999 ETH | ||||
19152111 | 177 days ago | 0.11795486 ETH | ||||
19151059 | 177 days ago | 0.49999999 ETH | ||||
19150550 | 177 days ago | 0.27 ETH | ||||
19122093 | 181 days ago | 0.46999999 ETH | ||||
19122089 | 181 days ago | 0.46999999 ETH | ||||
19122089 | 181 days ago | 0.46999999 ETH | ||||
18993247 | 199 days ago | 0.09999999 ETH | ||||
18993247 | 199 days ago | 0.09999999 ETH | ||||
18993247 | 199 days ago | 0.09999999 ETH | ||||
18993232 | 199 days ago | 1.6 ETH | ||||
18993231 | 199 days ago | 1.6 ETH | ||||
18993231 | 199 days ago | 1.6 ETH | ||||
18986583 | 200 days ago | 0.4 ETH | ||||
18986583 | 200 days ago | 0.4 ETH | ||||
18986583 | 200 days ago | 0.4 ETH | ||||
18986583 | 200 days ago | 0.4 ETH | ||||
18986582 | 200 days ago | 0.4 ETH | ||||
18986582 | 200 days ago | 0.4 ETH | ||||
18986582 | 200 days ago | 0.4 ETH | ||||
18906223 | 211 days ago | 0.225 ETH | ||||
18895454 | 213 days ago | 0.69999999 ETH | ||||
18895391 | 213 days ago | 1.99999999 ETH |
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Contract Name:
Erc20SaleWeth
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 200 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import './Erc20Sale.sol'; import '../weth/IgWETH.sol'; contract Erc20SaleWeth { Erc20Sale immutable _sale; IgWETH immutable _weth; constructor(address saleAlg, address weth) { _sale = Erc20Sale(saleAlg); _weth = IgWETH(weth); } function getSaleAlg() external view returns (address) { return address(_sale); } function buy( uint256 positionId, address to, uint256 count, uint256 priceNom, uint256 priceDenom ) external payable { PositionData memory position = _sale.getPosition(positionId); require( position.asset2 == address(_weth), 'sale position is not require eth for purchase' ); uint256 toSpend = _sale.spendToBuy(positionId, count); require(msg.value >= toSpend, 'not enough ether'); uint256 dif = msg.value - toSpend; _weth.mint{ value: toSpend }(); _sale.buy(positionId, to, count, priceNom, priceDenom); if (dif > 0) { (bool sent, ) = payable(msg.sender).call{ value: dif }(''); require(sent, 'sent ether error: ether is not sent'); } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import '@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol'; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; import 'contracts/fee/IFeeSettings.sol'; struct PositionData { address owner; address asset1; address asset2; uint256 priceNom; uint256 priceDenom; uint256 count1; uint256 count2; } contract Erc20Sale { using SafeERC20 for IERC20; IFeeSettings immutable _feeSettings; mapping(uint256 => PositionData) _positions; uint256 _totalPositions; constructor(address feeSettings) { _feeSettings = IFeeSettings(feeSettings); } event OnCreate( uint256 indexed positionId, address indexed owner, address asset1, address asset2, uint256 priceNom, uint256 priceDenom ); event OnBuy( uint256 indexed positionId, address indexed account, uint256 count ); event OnPrice( uint256 indexed positionId, uint256 priceNom, uint256 priceDenom ); event OnWithdraw( uint256 indexed positionId, uint256 assetCode, address to, uint256 count ); function createAsset( address asset1, address asset2, uint256 priceNom, uint256 priceDenom, uint256 count ) external { if (count > 0) { uint256 lastCount = IERC20(asset1).balanceOf(address(this)); IERC20(asset1).safeTransferFrom(msg.sender, address(this), count); count = IERC20(asset1).balanceOf(address(this)) - lastCount; } _positions[++_totalPositions] = PositionData( msg.sender, asset1, asset2, priceNom, priceDenom, count, 0 ); emit OnCreate( _totalPositions, msg.sender, asset1, asset2, priceNom, priceDenom ); } function addBalance(uint256 positionId, uint256 count) external { PositionData storage pos = _positions[positionId]; uint256 lastCount = IERC20(pos.asset1).balanceOf(address(this)); IERC20(pos.asset1).safeTransferFrom(msg.sender, address(this), count); pos.count1 += IERC20(pos.asset1).balanceOf(address(this)) - lastCount; } function withdraw( uint256 positionId, uint256 assetCode, address to, uint256 count ) external { PositionData storage pos = _positions[positionId]; require(pos.owner == msg.sender, 'only for position owner'); uint256 fee = (_feeSettings.feePercent() * count) / _feeSettings.feeDecimals(); uint256 toWithdraw = count - fee; if (assetCode == 1) { require(pos.count1 >= count, 'not enough asset count'); uint256 lastCount = IERC20(pos.asset1).balanceOf(address(this)); IERC20(pos.asset1).safeTransfer(_feeSettings.feeAddress(), fee); IERC20(pos.asset1).safeTransfer(to, toWithdraw); uint256 transferred = lastCount - IERC20(pos.asset1).balanceOf(address(this)); require( pos.count1 >= transferred, 'not enough asset count after withdraw' ); pos.count1 -= transferred; } else if (assetCode == 2) { require(pos.count2 >= count, 'not enough asset count'); uint256 lastCount = IERC20(pos.asset2).balanceOf(address(this)); IERC20(pos.asset2).safeTransfer(_feeSettings.feeAddress(), fee); IERC20(pos.asset2).safeTransfer(to, toWithdraw); uint256 transferred = lastCount - IERC20(pos.asset2).balanceOf(address(this)); require( pos.count2 >= transferred, 'not enough asset count after withdraw' ); pos.count2 -= transferred; } else revert('unknown asset code'); emit OnWithdraw(positionId, assetCode, to, count); } function setPrice( uint256 positionId, uint256 priceNom, uint256 priceDenom ) external { PositionData storage pos = _positions[positionId]; require(pos.owner == msg.sender, 'only for position owner'); pos.priceNom = priceNom; pos.priceDenom = priceDenom; emit OnPrice(positionId, priceNom, priceDenom); } function buy( uint256 positionId, address to, uint256 count, uint256 priceNom, uint256 priceDenom ) external { PositionData storage pos = _positions[positionId]; // price frontrun protection require( pos.priceNom == priceNom && pos.priceDenom == priceDenom, 'the price is changed' ); uint256 spend = _spendToBuy(pos, count); require( spend > 0, 'spend asset count is zero (count parameter is less than minimum count to spend)' ); uint256 buyFee = (count * _feeSettings.feePercent()) / _feeSettings.feeDecimals(); uint256 buyToTransfer = count - buyFee; // transfer buy require(pos.count1 >= count, 'not enough asset count at position'); uint256 lastCount = IERC20(pos.asset1).balanceOf(address(this)); IERC20(pos.asset1).safeTransfer(_feeSettings.feeAddress(), buyFee); IERC20(pos.asset1).safeTransfer(to, buyToTransfer); uint256 transferred = lastCount - IERC20(pos.asset1).balanceOf(address(this)); require( pos.count1 >= transferred, 'not enough asset count after withdraw' ); pos.count1 -= transferred; // transfer spend lastCount = IERC20(pos.asset2).balanceOf(address(this)); IERC20(pos.asset2).safeTransferFrom(msg.sender, address(this), spend); pos.count2 += IERC20(pos.asset2).balanceOf(address(this)) - lastCount; // emit event emit OnBuy(positionId, to, count); } function spendToBuy(uint256 positionId, uint256 count) external view returns (uint256) { return _spendToBuy(_positions[positionId], count); } function _spendToBuy(PositionData memory pos, uint256 count) private pure returns (uint256) { return (count * pos.priceNom) / pos.priceDenom; } function getPosition(uint256 positionId) external view returns (PositionData memory) { return _positions[positionId]; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; import '@openzeppelin/contracts/token/ERC20/IERC20.sol'; interface IgWETH { function mint() external payable; function mintTo(address account) external payable; function unwrap(uint256 amount) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/draft-IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @title SafeERC20 * @dev Wrappers around ERC20 operations that throw on failure (when the token * contract returns false). Tokens that return no value (and instead revert or * throw on failure) are also supported, non-reverting calls are assumed to be * successful. * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract, * which allows you to call the safe operations as `token.safeTransfer(...)`, etc. */ library SafeERC20 { using Address for address; function safeTransfer( IERC20 token, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } function safeTransferFrom( IERC20 token, address from, address to, uint256 value ) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value)); } /** * @dev Deprecated. This function has issues similar to the ones found in * {IERC20-approve}, and its usage is discouraged. * * Whenever possible, use {safeIncreaseAllowance} and * {safeDecreaseAllowance} instead. */ function safeApprove( IERC20 token, address spender, uint256 value ) internal { // safeApprove should only be called when setting an initial allowance, // or when resetting it to zero. To increase and decrease it, use // 'safeIncreaseAllowance' and 'safeDecreaseAllowance' require( (value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance( IERC20 token, address spender, uint256 value ) internal { uint256 newAllowance = token.allowance(address(this), spender) + value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance( IERC20 token, address spender, uint256 value ) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); uint256 newAllowance = oldAllowance - value; _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } } function safePermit( IERC20Permit token, address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) internal { uint256 nonceBefore = token.nonces(owner); token.permit(owner, spender, value, deadline, v, r, s); uint256 nonceAfter = token.nonces(owner); require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed"); } /** * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement * on the return value: the return value is optional (but if data is returned, it must not be false). * @param token The token targeted by the call. * @param data The call data (encoded using abi.encode or one of its variants). */ function _callOptionalReturn(IERC20 token, bytes memory data) private { // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since // we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that // the target address contains contract code and also asserts for success in the low-level call. bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed"); if (returndata.length > 0) { // Return data is optional require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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 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); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8.17; interface IFeeSettings { function feeAddress() external returns (address); // address to pay fee function feePercent() external returns (uint256); // fee in 1/decimals for deviding values function feeDecimals() external view returns(uint256); // fee decimals function feeEth() external returns (uint256); // fee value for not dividing deal points }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612]. * * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't * need to send a transaction, and thus is not required to hold Ether at all. */ interface IERC20Permit { /** * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens, * given ``owner``'s signed approval. * * IMPORTANT: The same issues {IERC20-approve} has related to transaction * ordering also apply here. * * Emits an {Approval} event. * * Requirements: * * - `spender` cannot be the zero address. * - `deadline` must be a timestamp in the future. * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner` * over the EIP712-formatted function arguments. * - the signature must use ``owner``'s current nonce (see {nonces}). * * For more information on the signature format, see the * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP * section]. */ function permit( address owner, address spender, uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s ) external; /** * @dev Returns the current nonce for `owner`. This value must be * included whenever a signature is generated for {permit}. * * Every successful call to {permit} increases ``owner``'s nonce by one. This * prevents a signature from being used multiple times. */ function nonces(address owner) external view returns (uint256); /** * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}. */ // solhint-disable-next-line func-name-mixedcase function DOMAIN_SEPARATOR() external view returns (bytes32); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.7.0) (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 /// @solidity memory-safe-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
{ "optimizer": { "enabled": true, "runs": 200 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
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[{"inputs":[{"internalType":"address","name":"saleAlg","type":"address"},{"internalType":"address","name":"weth","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"uint256","name":"positionId","type":"uint256"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"count","type":"uint256"},{"internalType":"uint256","name":"priceNom","type":"uint256"},{"internalType":"uint256","name":"priceDenom","type":"uint256"}],"name":"buy","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getSaleAlg","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"}]
Contract Creation Code
60c060405234801561001057600080fd5b506040516106c53803806106c583398101604081905261002f91610062565b6001600160a01b039182166080521660a052610095565b80516001600160a01b038116811461005d57600080fd5b919050565b6000806040838503121561007557600080fd5b61007e83610046565b915061008c60208401610046565b90509250929050565b60805160a0516105f16100d46000396000818161011d01526102a301526000818160520152818160a6015281816101db015261034d01526105f16000f3fe6080604052600436106100295760003560e01c806389beba4b1461002e578063f66bf3e814610043575b600080fd5b61004161003c36600461047e565b61008d565b005b34801561004f57600080fd5b507f00000000000000000000000000000000000000000000000000000000000000006040516001600160a01b03909116815260200160405180910390f35b60405163eb02c30160e01b8152600481018690526000907f00000000000000000000000000000000000000000000000000000000000000006001600160a01b03169063eb02c3019060240160e060405180830381865afa1580156100f5573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061011991906104d6565b90507f00000000000000000000000000000000000000000000000000000000000000006001600160a01b031681604001516001600160a01b0316146101bb5760405162461bcd60e51b815260206004820152602d60248201527f73616c6520706f736974696f6e206973206e6f7420726571756972652065746860448201526c20666f7220707572636861736560981b60648201526084015b60405180910390fd5b6040516321f0b37760e21b815260048101879052602481018590526000907f00000000000000000000000000000000000000000000000000000000000000006001600160a01b0316906387c2cddc90604401602060405180830381865afa15801561022a573d6000803e3d6000fd5b505050506040513d601f19601f8201168201806040525081019061024e919061057b565b9050803410156102935760405162461bcd60e51b815260206004820152601060248201526f3737ba1032b737bab3b41032ba3432b960811b60448201526064016101b2565b600061029f8234610594565b90507f00000000000000000000000000000000000000000000000000000000000000006001600160a01b0316631249c58b836040518263ffffffff1660e01b81526004016000604051808303818588803b1580156102fc57600080fd5b505af1158015610310573d6000803e3d6000fd5b50506040516389beba4b60e01b8152600481018c90526001600160a01b038b81166024830152604482018b9052606482018a9052608482018990527f00000000000000000000000000000000000000000000000000000000000000001693506389beba4b925060a4019050600060405180830381600087803b15801561039557600080fd5b505af11580156103a9573d6000803e3d6000fd5b50505050600081111561045c57604051600090339083908381818185875af1925050503d80600081146103f8576040519150601f19603f3d011682016040523d82523d6000602084013e6103fd565b606091505b505090508061045a5760405162461bcd60e51b815260206004820152602360248201527f73656e74206574686572206572726f723a206574686572206973206e6f742073604482015262195b9d60ea1b60648201526084016101b2565b505b5050505050505050565b6001600160a01b038116811461047b57600080fd5b50565b600080600080600060a0868803121561049657600080fd5b8535945060208601356104a881610466565b94979496505050506040830135926060810135926080909101359150565b80516104d181610466565b919050565b600060e082840312156104e857600080fd5b60405160e0810181811067ffffffffffffffff8211171561051957634e487b7160e01b600052604160045260246000fd5b604052610525836104c6565b8152610533602084016104c6565b6020820152610544604084016104c6565b6040820152606083015160608201526080830151608082015260a083015160a082015260c083015160c08201528091505092915050565b60006020828403121561058d57600080fd5b5051919050565b818103818111156105b557634e487b7160e01b600052601160045260246000fd5b9291505056fea26469706673582212200d3e1e011660efa514fd6a0f1c38dd1ee9d4efde969aee87d7812e54401750b164736f6c63430008110033000000000000000000000000b47376a8ad9f00eb30f9a21b53c148fb351416b60000000000000000000000007a96126938a37f3e5bf73844aec57d1974d528c6
Deployed Bytecode
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
Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000b47376a8ad9f00eb30f9a21b53c148fb351416b60000000000000000000000007a96126938a37f3e5bf73844aec57d1974d528c6
-----Decoded View---------------
Arg [0] : saleAlg (address): 0xb47376A8aD9F00Eb30F9A21B53c148Fb351416b6
Arg [1] : weth (address): 0x7a96126938A37f3E5bf73844AeC57d1974D528C6
-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 000000000000000000000000b47376a8ad9f00eb30f9a21b53c148fb351416b6
Arg [1] : 0000000000000000000000007a96126938a37f3e5bf73844aec57d1974d528c6
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.