Contract Source Code (Solidity)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta

Outline

• interface IProxy
•    - function masterCopy()
•  contract SafeProxy *

More Options

• Is this a proxy?
• Similar
• Submit Audit
• Compare

/**
 *Submitted for verification at worldscan.org on 2024-12-29
*/

// SPDX-License-Identifier: LGPL-3.0-only
pragma solidity >=0.7.0 <0.9.0;

/**
 * @title IProxy - Helper interface to access the singleton address of the Proxy on-chain.
 * @author Richard Meissner - @rmeissner
 */
interface IProxy {
    function masterCopy() external view returns (address);
}

/**
 * @title SafeProxy - 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 SafeProxy {
    // Singleton 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 singleton;

    /**
     * @notice Constructor function sets address of singleton contract.
     * @param _singleton Singleton address.
     */
    constructor(address _singleton) {
        require(_singleton != address(0), "Invalid singleton address provided");
        singleton = _singleton;
    }

    /// @dev Fallback function forwards all transactions and returns all received return data.
    fallback() external payable {
        // solhint-disable-next-line no-inline-assembly
        assembly {
            let _singleton := and(sload(0), 0xffffffffffffffffffffffffffffffffffffffff)
            // 0xa619486e == keccak("masterCopy()"). The value is right padded to 32-bytes with 0s
            if eq(calldataload(0), 0xa619486e00000000000000000000000000000000000000000000000000000000) {
                mstore(0, _singleton)
                return(0, 0x20)
            }
            calldatacopy(0, 0, calldatasize())
            let success := delegatecall(gas(), _singleton, 0, calldatasize(), 0, 0)
            returndatacopy(0, 0, returndatasize())
            if eq(success, 0) {
                revert(0, returndatasize())
            }
            return(0, returndatasize())
        }
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"address","name":"_singleton","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"stateMutability":"payable","type":"fallback"}]

0x608060405273ffffffffffffffffffffffffffffffffffffffff600054167fa619486e0000000000000000000000000000000000000000000000000000000060003514156050578060005260206000f35b3660008037600080366000845af43d6000803e60008114156070573d6000fd5b3d6000f3fea264697066735822122003d1488ee65e08fa41e58e888a9865554c535f2c77126a82cb4c0f917f31441364736f6c63430007060033

536:1541:0:-:0;;;1401:42;1397:1;1391:8;1387:57;1581:66;1577:1;1564:15;1561:87;1558:2;;;1678:10;1675:1;1668:21;1717:4;1714:1;1707:15;1558:2;1770:14;1767:1;1764;1751:34;1868:1;1865;1849:14;1846:1;1834:10;1827:5;1814:56;1905:16;1902:1;1899;1884:38;1951:1;1942:7;1939:14;1936:2;;;1983:16;1980:1;1973:27;1936:2;2039:16;2036:1;2029:27

ipfs://03d1488ee65e08fa41e58e888a9865554c535f2c77126a82cb4c0f917f314413