Transactions
Internal Transactions
Coin Balance History
Logs
Code
Read Contract
Read Proxy
Write Contract
Write Proxy
- Contract name:
- InitializableAdminUpgradeabilityProxy
- Optimization enabled
- false
- Compiler version
- v0.5.1+commit.c8a2cb62
- EVM Version
- default
- Verified at
- 2023-07-07T19:49:37.373375Z
Contract source code
// File: @openzeppelin/upgrades/contracts/upgradeability/Proxy.sol pragma solidity 0.5.1; /** * @title Proxy * @dev Implements delegation of calls to other contracts, with proper * forwarding of return values and bubbling of failures. * It defines a fallback function that delegates all calls to the address * returned by the abstract _implementation() internal function. */ contract Proxy { /** * @dev Fallback function. * Implemented entirely in _fallback. */ function() external payable { _fallback(); } /** * @return The Address of the implementation. */ function _implementation() internal view returns (address); /** * @dev Delegates execution to an implementation contract. * This is a low level function that doesn't return to its internal call site. * It will return to the external caller whatever the implementation returns. * @param implementation Address to delegate. */ function _delegate(address implementation) internal { 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 Function that is run as the first thing in the fallback function. * Can be redefined in derived contracts to add functionality. * Redefinitions must call super._willFallback(). */ function _willFallback() internal {} /** * @dev fallback implementation. * Extracted to enable manual triggering. */ function _fallback() internal { _willFallback(); _delegate(_implementation()); } } // File: @openzeppelin/upgrades/contracts/utils/Address.sol pragma solidity 0.5.1; /** * Utility library of inline functions on addresses * * Source https://raw.githubusercontent.com/OpenZeppelin/openzeppelin-solidity/v2.1.3/contracts/utils/Address.sol * This contract is copied here and renamed from the original to avoid clashes in the compiled artifacts * when the user imports a zos-lib contract (that transitively causes this contract to be compiled and added to the * build/artifacts folder) as well as the vanilla Address implementation from an openzeppelin version. */ library OpenZeppelinUpgradesAddress { /** * Returns whether the target address is a contract * @dev This function will return false if invoked during the constructor of a contract, * as the code is not actually created until after the constructor finishes. * @param account address of the account to check * @return whether the target address is a contract */ function isContract(address account) internal view returns (bool) { uint256 size; // XXX Currently there is no better way to check if there is a contract in an address // than to check the size of the code at that address. // See https://ethereum.stackexchange.com/a/14016/36603 // for more details about how this works. // TODO Check this again before the Serenity release, because all addresses will be // contracts then. // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } } // File: @openzeppelin/upgrades/contracts/upgradeability/BaseUpgradeabilityProxy.sol pragma solidity 0.5.1; /** * @title BaseUpgradeabilityProxy * @dev This contract implements a proxy that allows to change the * implementation address to which it will delegate. * Such a change is called an implementation upgrade. */ contract BaseUpgradeabilityProxy is Proxy { /** * @dev Emitted when the implementation is upgraded. * @param implementation Address of the new implementation. */ event Upgraded(address indexed implementation); /** * @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 Returns the current implementation. * @return Address of the current implementation */ function _implementation() internal view returns (address impl) { bytes32 slot = IMPLEMENTATION_SLOT; assembly { impl := sload(slot) } } /** * @dev Upgrades the proxy to a new implementation. * @param newImplementation Address of the new implementation. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Sets the implementation address of the proxy. * @param newImplementation Address of the new implementation. */ function _setImplementation(address newImplementation) internal { require( OpenZeppelinUpgradesAddress.isContract(newImplementation), "Cannot set a proxy implementation to a non-contract address" ); bytes32 slot = IMPLEMENTATION_SLOT; assembly { sstore(slot, newImplementation) } } } // File: @openzeppelin/upgrades/contracts/upgradeability/UpgradeabilityProxy.sol pragma solidity 0.5.1; /** * @title UpgradeabilityProxy * @dev Extends BaseUpgradeabilityProxy with a constructor for initializing * implementation and init data. */ contract UpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Contract constructor. * @param _logic Address of the initial implementation. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ constructor(address _logic, bytes memory _data) public payable { assert( IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1) ); _setImplementation(_logic); if (_data.length > 0) { (bool success, ) = _logic.delegatecall(_data); require(success); } } } // File: @openzeppelin/upgrades/contracts/upgradeability/BaseAdminUpgradeabilityProxy.sol pragma solidity 0.5.1; /** * @title BaseAdminUpgradeabilityProxy * @dev This contract combines an upgradeability proxy with an authorization * mechanism for administrative tasks. * All external functions in this contract must be guarded by the * ifAdmin modifier. See ethereum/solidity#3864 for a Solidity * feature proposal that would enable this to be done automatically. */ contract BaseAdminUpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Emitted when the administration has been transferred. * @param previousAdmin Address of the previous admin. * @param newAdmin Address of the new admin. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @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 Modifier to check whether the msg.sender is the admin. * If it is, it will run the function. Otherwise, it will delegate the call * to the implementation. */ modifier ifAdmin() { if (msg.sender == _admin()) { _; } else { _fallback(); } } /** * @return The address of the proxy admin. */ function admin() external ifAdmin returns (address) { return _admin(); } /** * @return The address of the implementation. */ function implementation() external ifAdmin returns (address) { return _implementation(); } /** * @dev Changes the admin of the proxy. * Only the current admin can call this function. * @param newAdmin Address to transfer proxy administration to. */ function changeAdmin(address newAdmin) external ifAdmin { require( newAdmin != address(0), "Cannot change the admin of a proxy to the zero address" ); emit AdminChanged(_admin(), newAdmin); _setAdmin(newAdmin); } /** * @dev Upgrade the backing implementation of the proxy. * Only the admin can call this function. * @param newImplementation Address of the new implementation. */ function upgradeTo(address newImplementation) external ifAdmin { _upgradeTo(newImplementation); } /** * @dev Upgrade the backing implementation of the proxy and call a function * on the new implementation. * This is useful to initialize the proxied contract. * @param newImplementation Address of the new implementation. * @param data Data to send as msg.data in the low level call. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. */ function upgradeToAndCall(address newImplementation, bytes calldata data) external payable ifAdmin { _upgradeTo(newImplementation); (bool success, ) = newImplementation.delegatecall(data); require(success); } /** * @return The admin slot. */ function _admin() internal view returns (address adm) { bytes32 slot = ADMIN_SLOT; assembly { adm := sload(slot) } } /** * @dev Sets the address of the proxy admin. * @param newAdmin Address of the new proxy admin. */ function _setAdmin(address newAdmin) internal { bytes32 slot = ADMIN_SLOT; assembly { sstore(slot, newAdmin) } } /** * @dev Only fall back when the sender is not the admin. */ function _willFallback() internal { require( msg.sender != _admin(), "Cannot call fallback function from the proxy admin" ); super._willFallback(); } } // File: @openzeppelin/upgrades/contracts/upgradeability/InitializableUpgradeabilityProxy.sol pragma solidity 0.5.1; /** * @title InitializableUpgradeabilityProxy * @dev Extends BaseUpgradeabilityProxy with an initializer for initializing * implementation and init data. */ contract InitializableUpgradeabilityProxy is BaseUpgradeabilityProxy { /** * @dev Contract initializer. * @param _logic Address of the initial implementation. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ function initialize(address _logic, bytes memory _data) public payable { require(_implementation() == address(0)); assert( IMPLEMENTATION_SLOT == bytes32(uint256(keccak256("eip1967.proxy.implementation")) - 1) ); _setImplementation(_logic); if (_data.length > 0) { (bool success, ) = _logic.delegatecall(_data); require(success); } } } // File: @openzeppelin/upgrades/contracts/upgradeability/InitializableAdminUpgradeabilityProxy.sol pragma solidity 0.5.1; /** * @title InitializableAdminUpgradeabilityProxy * @dev Extends from BaseAdminUpgradeabilityProxy with an initializer for * initializing the implementation, admin, and init data. */ contract InitializableAdminUpgradeabilityProxy is BaseAdminUpgradeabilityProxy, InitializableUpgradeabilityProxy { /** * Contract initializer. * @param _logic address of the initial implementation. * @param _admin Address of the proxy administrator. * @param _data Data to send as msg.data to the implementation to initialize the proxied contract. * It should include the signature and the parameters of the function to be called, as described in * https://solidity.readthedocs.io/en/v0.4.24/abi-spec.html#function-selector-and-argument-encoding. * This parameter is optional, if no data is given the initialization call to proxied contract will be skipped. */ function initialize( address _logic, address _admin, bytes memory _data ) public payable { require(_implementation() == address(0)); InitializableUpgradeabilityProxy.initialize(_logic, _data); assert( ADMIN_SLOT == bytes32(uint256(keccak256("eip1967.proxy.admin")) - 1) ); _setAdmin(_admin); } } // File: contracts/VoteTokenProxy.sol pragma solidity 0.5.1; contract VoteToken is InitializableAdminUpgradeabilityProxy {}
Contract ABI
[{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":""}],"name":"admin","inputs":[],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"changeAdmin","inputs":[{"type":"address","name":"newAdmin"}],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[{"type":"address","name":""}],"name":"implementation","inputs":[],"constant":false},{"type":"function","stateMutability":"payable","outputs":[],"name":"initialize","inputs":[{"type":"address","name":"_logic"},{"type":"address","name":"_admin"},{"type":"bytes","name":"_data"}],"constant":false},{"type":"function","stateMutability":"payable","outputs":[],"name":"initialize","inputs":[{"type":"address","name":"_logic"},{"type":"bytes","name":"_data"}],"constant":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"upgradeTo","inputs":[{"type":"address","name":"newImplementation"}],"constant":false},{"type":"function","stateMutability":"payable","outputs":[],"name":"upgradeToAndCall","inputs":[{"type":"address","name":"newImplementation"},{"type":"bytes","name":"data"}],"constant":false},{"type":"event","name":"AdminChanged","inputs":[{"type":"address","name":"previousAdmin","indexed":false},{"type":"address","name":"newAdmin","indexed":false}],"anonymous":false},{"type":"event","name":"Upgraded","inputs":[{"type":"address","name":"implementation","indexed":true}],"anonymous":false},{"type":"fallback"}]
Deployed ByteCode
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