Discover more of Etherscan's tools and services in one place.
Sponsored
Contract Source Code:
File 1 of 1 : Proxy
pragma solidity ^0.5.3; /// @title Proxy - 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 Proxy { // 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()) } } }
Please enter a contract address above to load the contract details and source code.
This website uses cookies to improve your experience. By continuing to use this website, you agree to its Terms and Privacy Policy.