Contract Address Details
contract
proxy
0x6FFB7F1BAfec6D1cB3993928f8D1ce9f7835F6a1
Sponsored:
Transactions
Token Transfers
Tokens
Internal Transactions
Coin Balance History
Logs
Code
Read Contract
Read Proxy
Write Contract
Write Proxy
- Contract name:
- EternalStorageProxy
- Optimization enabled
- true
- Compiler version
- v0.4.26+commit.4563c3fc
- Optimization runs
- 200
- EVM Version
- default
- Verified at
- 2023-09-30T07:25:26.043342Z
Constructor Arguments
00000000000000000000000000000000000000000000000000000000000000000000000000000000000000007aeb9e2a2bf7f9fa8d9323bb475b547c81dd5473
Arg [0] (address) : 0x0000000000000000000000000000000000000000
Arg [1] (address) : 0x7aeb9e2a2bf7f9fa8d9323bb475b547c81dd5473
Contract source code
// File: contracts/eternal-storage/EternalStorage.sol pragma solidity ^0.4.24; /** * @title EternalStorage * @author LiorRabin * @dev This contract holds all the necessary state variables to carry out the storage of any contract and to support the upgrade functionality. */ contract EternalStorage { // Version number of the current implementation uint256 internal version; // Address of the current implementation address internal implementation; // Storage mappings 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; mapping(bytes32 => uint256[]) internal uintArrayStorage; mapping(bytes32 => string[]) internal stringArrayStorage; mapping(bytes32 => address[]) internal addressArrayStorage; mapping(bytes32 => bytes[]) internal bytesArrayStorage; mapping(bytes32 => bool[]) internal boolArrayStorage; mapping(bytes32 => int256[]) internal intArrayStorage; mapping(bytes32 => bytes32[]) internal bytes32ArrayStorage; function isInitialized() public view returns(bool) { return boolStorage[keccak256(abi.encodePacked("isInitialized"))]; } function setInitialized(bool _status) internal { boolStorage[keccak256(abi.encodePacked("isInitialized"))] = _status; } } // File: contracts/eternal-storage/EternalStorageProxy.sol pragma solidity ^0.4.24; /** * @title EternalStorageProxy * @author LiorRabin * @dev This proxy holds the storage of the token contract and delegates every call to the current implementation set. * Besides, it allows to upgrade the token's behaviour towards further implementations, and provides authorization control functionalities */ contract EternalStorageProxy is EternalStorage { /** * @dev This event will be emitted every time the implementation gets upgraded * @param version representing the version number of the upgraded implementation * @param implementation representing the address of the upgraded implementation */ event Upgraded(uint256 version, address indexed implementation); /** * @dev This event will be emitted when ownership is renounces * @param previousOwner address which is renounced from ownership */ event OwnershipRenounced(address indexed previousOwner); /** * @dev This event will be emitted when ownership is transferred * @param previousOwner address which represents the previous owner * @param newOwner address which represents the new owner */ event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev This modifier verifies that msg.sender is the ProxyStorage contract */ modifier onlyProxyStorage() { require(msg.sender == getProxyStorage()); _; } /** * @dev This modifier verifies that msg.sender is the owner of the contract */ modifier onlyOwner() { require(msg.sender == getOwner()); _; } /** * @dev Constructor * @param _proxyStorage address representing the ProxyStorage contract * @param _implementation address representing the implementation contract */ constructor(address _proxyStorage, address _implementation) public { require(_implementation != address(0)); if (_proxyStorage != address(0)) { _setProxyStorage(_proxyStorage); } else { _setProxyStorage(address(this)); } _setImplementation(_implementation); _setOwner(msg.sender); } /** * @dev Fallback function allowing to perform a delegatecall to the given implementation. * This function will return whatever the implementation call returns */ // solhint-disable no-complex-fallback, no-inline-assembly function() payable public { address _impl = getImplementation(); require(_impl != address(0)); 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, _impl, 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) } } } // solhint-enable no-complex-fallback, no-inline-assembly /** * @dev Allows ProxyStorage contract (only) to upgrade the current implementation. * @param _newImplementation representing the address of the new implementation to be set. */ function upgradeTo(address _newImplementation) public onlyProxyStorage returns(bool) { if (_newImplementation == address(0)) return false; if (getImplementation() == _newImplementation) return false; uint256 _newVersion = getVersion() + 1; _setVersion(_newVersion); _setImplementation(_newImplementation); emit Upgraded(_newVersion, _newImplementation); return true; } /** * @dev Allows the current owner to relinquish ownership. */ function renounceOwnership() public onlyOwner { emit OwnershipRenounced(getOwner()); _setOwner(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 { require(_newOwner != address(0)); emit OwnershipTransferred(getOwner(), _newOwner); _setOwner(_newOwner); } function getOwner() public view returns(address) { return addressStorage[keccak256(abi.encodePacked("owner"))]; } function _setOwner(address _owner) private { addressStorage[keccak256(abi.encodePacked("owner"))] = _owner; } function getVersion() public view returns(uint256) { return version; } function _setVersion(uint256 _newVersion) private { version = _newVersion; } function getImplementation() public view returns(address) { return implementation; } function _setImplementation(address _newImplementation) private { implementation = _newImplementation; } function getProxyStorage() public view returns(address) { return addressStorage[keccak256(abi.encodePacked("proxyStorage"))]; } function _setProxyStorage(address _proxyStorage) private { addressStorage[keccak256(abi.encodePacked("proxyStorage"))] = _proxyStorage; } }
Contract ABI
[{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"uint256","name":""}],"name":"getVersion","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[{"type":"bool","name":""}],"name":"upgradeTo","inputs":[{"type":"address","name":"_newImplementation"}],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"bool","name":""}],"name":"isInitialized","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"renounceOwnership","inputs":[],"constant":false},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":""}],"name":"getOwner","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":""}],"name":"getImplementation","inputs":[],"constant":true},{"type":"function","stateMutability":"view","payable":false,"outputs":[{"type":"address","name":""}],"name":"getProxyStorage","inputs":[],"constant":true},{"type":"function","stateMutability":"nonpayable","payable":false,"outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"_newOwner"}],"constant":false},{"type":"constructor","stateMutability":"nonpayable","payable":false,"inputs":[{"type":"address","name":"_proxyStorage"},{"type":"address","name":"_implementation"}]},{"type":"fallback","stateMutability":"payable","payable":true},{"type":"event","name":"Upgraded","inputs":[{"type":"uint256","name":"version","indexed":false},{"type":"address","name":"implementation","indexed":true}],"anonymous":false},{"type":"event","name":"OwnershipRenounced","inputs":[{"type":"address","name":"previousOwner","indexed":true}],"anonymous":false},{"type":"event","name":"OwnershipTransferred","inputs":[{"type":"address","name":"previousOwner","indexed":true},{"type":"address","name":"newOwner","indexed":true}],"anonymous":false}]
Contract Creation Code
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Deployed ByteCode
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