Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- AddressUpdater
- Optimization enabled
- true
- Compiler version
- v0.7.6+commit.7338295f
- Optimization runs
- 200
- Verified at
- 2022-02-24T08:44:05.944996Z
Constructor Arguments
000000000000000000000000fe4dbb048428c3583e91a8e8f03bc64f09f54ef8
Arg [0] (address) : 0xfe4dbb048428c3583e91a8e8f03bc64f09f54ef8
./contracts/addressUpdater/implementation/AddressUpdater.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
pragma abicoder v2;
import "../../governance/implementation/Governed.sol";
import "../interface/IIAddressUpdatable.sol";
contract AddressUpdater is Governed {
string internal constant ERR_ARRAY_LENGTHS = "array lengths do not match";
string internal constant ERR_ADDRESS_ZERO = "address zero";
string[] internal contractNames;
mapping(bytes32 => address) internal contractAddresses;
constructor(address _governance) Governed(_governance) {}
/**
* @notice set/update contract names/addresses and then apply changes to other contracts
* @param _contractNames contracts names
* @param _contractAddresses addresses of corresponding contracts names
* @param _contractsToUpdate contracts to be updated
*/
function update(
string[] memory _contractNames,
address[] memory _contractAddresses,
IIAddressUpdatable[] memory _contractsToUpdate
)
external onlyGovernance
{
_addOrUpdateContractNamesAndAddresses(_contractNames, _contractAddresses);
_updateContractAddresses(_contractsToUpdate);
}
/**
* @notice Updates contract addresses on all contracts implementing IIAddressUpdatable interface
* @param _contractsToUpdate contracts to be updated
*/
function updateContractAddresses(IIAddressUpdatable[] memory _contractsToUpdate) external onlyGovernance {
_updateContractAddresses(_contractsToUpdate);
}
/**
* @notice Add or update contract names and addreses that are later used in updateContractAddresses calls
* @param _contractNames contracts names
* @param _contractAddresses addresses of corresponding contracts names
*/
function addOrUpdateContractNamesAndAddresses(
string[] memory _contractNames,
address[] memory _contractAddresses
)
external
onlyGovernance
{
_addOrUpdateContractNamesAndAddresses(_contractNames, _contractAddresses);
}
/**
* @notice Returns the contract names and the corresponding addresses
*/
function getContractNamesAndAddresses() external view returns(
string[] memory _contractNames,
address[] memory _contractAddresses
) {
_contractNames = contractNames;
uint256 len = _contractNames.length;
_contractAddresses = new address[](len);
while (len > 0) {
len--;
_contractAddresses[len] = contractAddresses[_keccak256AbiEncode(_contractNames[len])];
}
}
/**
* @notice Returns contract address for the given name and reverts if address(0)
*/
function getContractAddress(string memory _name) external view returns(address) {
address a = contractAddresses[_keccak256AbiEncode(_name)];
require(a != address(0), ERR_ADDRESS_ZERO);
return a;
}
/**
* @notice Add or update contract names and addreses that are later used in updateContractAddresses calls
* @param _contractNames contracts names
* @param _contractAddresses addresses of corresponding contracts names
*/
function _addOrUpdateContractNamesAndAddresses(
string[] memory _contractNames,
address[] memory _contractAddresses
)
internal
{
uint256 len = _contractNames.length;
require(len == _contractAddresses.length, ERR_ARRAY_LENGTHS);
for (uint256 i = 0; i < len; i++) {
require(_contractAddresses[i] != address(0), ERR_ADDRESS_ZERO);
bytes32 nameHash = _keccak256AbiEncode(_contractNames[i]);
// add new contract name if address is not known yet
if (contractAddresses[nameHash] == address(0)) {
contractNames.push(_contractNames[i]);
}
// set or update contract address
contractAddresses[nameHash] = _contractAddresses[i];
}
}
/**
* @notice Updates contract addresses on all contracts implementing IIAddressUpdatable interface
* @param _contractsToUpdate contracts to be updated
*/
function _updateContractAddresses(IIAddressUpdatable[] memory _contractsToUpdate) internal {
uint256 len = contractNames.length;
bytes32[] memory nameHashes = new bytes32[](len);
address[] memory addresses = new address[](len);
while (len > 0) {
len--;
nameHashes[len] = _keccak256AbiEncode(contractNames[len]);
addresses[len] = contractAddresses[nameHashes[len]];
}
for (uint256 i = 0; i < _contractsToUpdate.length; i++) {
_contractsToUpdate[i].updateContractAddresses(nameHashes, addresses);
}
}
/**
* @notice Returns hash from string value
*/
function _keccak256AbiEncode(string memory _value) internal pure returns(bytes32) {
return keccak256(abi.encode(_value));
}
}
./contracts/governance/implementation/GovernedBase.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
/**
* @title Governed Base
* @notice This abstract base class defines behaviors for a governed contract.
* @dev This class is abstract so that specific behaviors can be defined for the constructor.
* Contracts should not be left ungoverned, but not all contract will have a constructor
* (for example those pre-defined in genesis).
**/
abstract contract GovernedBase {
address public governance;
address public proposedGovernance;
bool private initialised;
event GovernanceProposed(address proposedGovernance);
event GovernanceUpdated (address oldGovernance, address newGoveranance);
modifier onlyGovernance () {
_checkOnlyGovernance();
_;
}
constructor(address _governance) {
if (_governance != address(0)) {
initialise(_governance);
}
}
/**
* @notice First of a two step process for turning over governance to another address.
* @param _governance The address to propose to receive governance role.
* @dev Must hold governance to propose another address.
*/
function proposeGovernance(address _governance) external onlyGovernance {
proposedGovernance = _governance;
emit GovernanceProposed(_governance);
}
/**
* @notice Once proposed, claimant can claim the governance role as the second of a two-step process.
*/
function claimGovernance() external {
require(msg.sender == proposedGovernance, "not claimaint");
emit GovernanceUpdated(governance, proposedGovernance);
governance = proposedGovernance;
proposedGovernance = address(0);
}
/**
* @notice In a one-step process, turn over governance to another address.
* @dev Must hold governance to transfer.
*/
function transferGovernance(address _governance) external onlyGovernance {
emit GovernanceUpdated(governance, _governance);
governance = _governance;
proposedGovernance = address(0);
}
/**
* @notice Initialize the governance address if not first initialized.
*/
function initialise(address _governance) public virtual {
require(initialised == false, "initialised != false");
initialised = true;
emit GovernanceUpdated(governance, _governance);
governance = _governance;
proposedGovernance = address(0);
}
function _checkOnlyGovernance() internal view {
require(msg.sender == governance, "only governance");
}
}
./contracts/addressUpdater/interface/IIAddressUpdatable.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9;
interface IIAddressUpdatable {
/**
* @notice Updates contract addresses - should be called only from AddressUpdater contract
* @param _contractNameHashes list of keccak256(abi.encode(...)) contract names
* @param _contractAddresses list of contract addresses corresponding to the contract names
*/
function updateContractAddresses(
bytes32[] memory _contractNameHashes,
address[] memory _contractAddresses
) external;
}
./contracts/governance/implementation/Governed.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
import { GovernedBase } from "./GovernedBase.sol";
/**
* @title Governed
* @dev For deployed, governed contracts, enforce a non-zero address at create time.
**/
contract Governed is GovernedBase {
constructor(address _governance) GovernedBase(_governance) {
require(_governance != address(0), "_governance zero");
}
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"_governance","internalType":"address"}]},{"type":"event","name":"GovernanceProposed","inputs":[{"type":"address","name":"proposedGovernance","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"GovernanceUpdated","inputs":[{"type":"address","name":"oldGovernance","internalType":"address","indexed":false},{"type":"address","name":"newGoveranance","internalType":"address","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"addOrUpdateContractNamesAndAddresses","inputs":[{"type":"string[]","name":"_contractNames","internalType":"string[]"},{"type":"address[]","name":"_contractAddresses","internalType":"address[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"claimGovernance","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"getContractAddress","inputs":[{"type":"string","name":"_name","internalType":"string"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"string[]","name":"_contractNames","internalType":"string[]"},{"type":"address[]","name":"_contractAddresses","internalType":"address[]"}],"name":"getContractNamesAndAddresses","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"governance","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"initialise","inputs":[{"type":"address","name":"_governance","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"proposeGovernance","inputs":[{"type":"address","name":"_governance","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"proposedGovernance","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferGovernance","inputs":[{"type":"address","name":"_governance","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"update","inputs":[{"type":"string[]","name":"_contractNames","internalType":"string[]"},{"type":"address[]","name":"_contractAddresses","internalType":"address[]"},{"type":"address[]","name":"_contractsToUpdate","internalType":"contract IIAddressUpdatable[]"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"updateContractAddresses","inputs":[{"type":"address[]","name":"_contractsToUpdate","internalType":"contract IIAddressUpdatable[]"}]}]
Contract Creation Code
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ByteCode
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