Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- CleanupBlockNumberManager
- Optimization enabled
- true
- Compiler version
- v0.7.6+commit.7338295f
- Optimization runs
- 200
- Verified at
- 2022-07-13T21:14:23.766638Z
Constructor Arguments
0000000000000000000000004598a6c05910ab914f0cbaaca1911cd337d10d29000000000000000000000000baf89d873d198ff78e72d2745b01cba3c6e5be6b0000000000000000000000000000000000000000000000000000000000000060000000000000000000000000000000000000000000000000000000000000000b4674736f4d616e61676572000000000000000000000000000000000000000000
Arg [0] (address) : 0x4598a6c05910ab914f0cbaaca1911cd337d10d29
Arg [1] (address) : 0xbaf89d873d198ff78e72d2745b01cba3c6e5be6b
Arg [2] (string) : FtsoManager
./contracts/token/implementation/CleanupBlockNumberManager.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
import "../../governance/implementation/Governed.sol";
import "../../addressUpdater/implementation/AddressUpdatable.sol";
import "../../token/interface/IICleanable.sol";
/**
* @title Token history cleanup manager
* @notice Maintains the list of cleanable tokens for which history cleanup can be collectively cleaned u
*/
contract CleanupBlockNumberManager is Governed, AddressUpdatable {
string internal constant ERR_CONTRACT_NOT_FOUND = "contract not found";
string internal constant ERR_TRIGGER_CONTRACT_ONLY = "trigger contract only";
IICleanable[] public registeredTokens;
address public triggerContract;
string public triggerContractName; // needed for updating trigger contract through AddressUpdater call
event RegistrationUpdated (IICleanable theContract, bool add);
event CleanupBlockNumberSet (IICleanable theContract, uint256 blockNumber, bool success);
modifier onlyTrigger {
require(msg.sender == triggerContract, ERR_TRIGGER_CONTRACT_ONLY);
_;
}
constructor(
address _governance,
address _addressUpdater,
string memory _triggerContractName
)
Governed(_governance) AddressUpdatable(_addressUpdater)
{
triggerContractName = _triggerContractName;
}
/**
* @notice Register a contract of which history cleanup index is to be managed
* @param _cleanableToken The address of the contract to be managed.
* @dev when using this function take care that call of setCleanupBlockNumber
* is permitted by this object
*/
function registerToken(IICleanable _cleanableToken) external onlyGovernance {
uint256 len = registeredTokens.length;
for (uint256 i = 0; i < len; i++) {
if (_cleanableToken == registeredTokens[i]) {
return; // already registered
}
}
registeredTokens.push(_cleanableToken);
emit RegistrationUpdated (_cleanableToken, true);
}
/**
* @notice Unregiseter a contract from history cleanup index management
* @param _cleanableToken The address of the contract to unregister.
*/
function unregisterToken(IICleanable _cleanableToken) external onlyGovernance {
uint256 len = registeredTokens.length;
for (uint256 i = 0; i < len; i++) {
if (_cleanableToken == registeredTokens[i]) {
registeredTokens[i] = registeredTokens[len -1];
registeredTokens.pop();
emit RegistrationUpdated (_cleanableToken, false);
return;
}
}
revert(ERR_CONTRACT_NOT_FOUND);
}
/**
* @notice Sets clean up block number on managed cleanable tokens
* @param _blockNumber cleanup block number
*/
function setCleanUpBlockNumber(uint256 _blockNumber) external onlyTrigger {
uint256 len = registeredTokens.length;
for (uint256 i = 0; i < len; i++) {
try registeredTokens[i].setCleanupBlockNumber(_blockNumber) {
emit CleanupBlockNumberSet(registeredTokens[i], _blockNumber, true);
} catch {
emit CleanupBlockNumberSet(registeredTokens[i], _blockNumber, false);
}
}
}
/**
* @notice Implementation of the AddressUpdatable abstract method.
*/
function _updateContractAddresses(
bytes32[] memory _contractNameHashes,
address[] memory _contractAddresses
)
internal override
{
triggerContract = _getContractAddress(_contractNameHashes, _contractAddresses, triggerContractName);
}
}
./contracts/addressUpdater/implementation/AddressUpdatable.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
import "../interface/IIAddressUpdatable.sol";
abstract contract AddressUpdatable is IIAddressUpdatable {
// https://docs.soliditylang.org/en/v0.8.7/contracts.html#constant-and-immutable-state-variables
// No storage slot is allocated
bytes32 internal constant ADDRESS_STORAGE_POSITION =
keccak256("flare.diamond.AddressUpdatable.ADDRESS_STORAGE_POSITION");
modifier onlyAddressUpdater() {
require (msg.sender == getAddressUpdater(), "only address updater");
_;
}
constructor(address _addressUpdater) {
setAddressUpdaterValue(_addressUpdater);
}
function getAddressUpdater() public view returns (address _addressUpdater) {
// Only direct constants are allowed in inline assembly, so we assign it here
bytes32 position = ADDRESS_STORAGE_POSITION;
// solhint-disable-next-line no-inline-assembly
assembly {
_addressUpdater := sload(position)
}
}
/**
* @notice external method called from AddressUpdater only
*/
function updateContractAddresses(
bytes32[] memory _contractNameHashes,
address[] memory _contractAddresses
)
external override
onlyAddressUpdater
{
// update addressUpdater address
setAddressUpdaterValue(_getContractAddress(_contractNameHashes, _contractAddresses, "AddressUpdater"));
// update all other addresses
_updateContractAddresses(_contractNameHashes, _contractAddresses);
}
/**
* @notice virtual method that a contract extending AddressUpdatable must implement
*/
function _updateContractAddresses(
bytes32[] memory _contractNameHashes,
address[] memory _contractAddresses
) internal virtual;
/**
* @notice helper method to get contract address
* @dev it reverts if contract name does not exist
*/
function _getContractAddress(
bytes32[] memory _nameHashes,
address[] memory _addresses,
string memory _nameToFind
)
internal pure
returns(address)
{
bytes32 nameHash = keccak256(abi.encode(_nameToFind));
address a = address(0);
for (uint256 i = 0; i < _nameHashes.length; i++) {
if (nameHash == _nameHashes[i]) {
a = _addresses[i];
break;
}
}
require(a != address(0), "address zero");
return a;
}
function setAddressUpdaterValue(address _addressUpdater) internal {
// Only direct constants are allowed in inline assembly, so we assign it here
bytes32 position = ADDRESS_STORAGE_POSITION;
// solhint-disable-next-line no-inline-assembly
assembly {
sstore(position, _addressUpdater)
}
}
}
./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");
}
}
./contracts/governance/implementation/GovernedBase.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
import "../../userInterfaces/IGovernanceSettings.sol";
/**
* @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 {
struct TimelockedCall {
uint256 allowedAfterTimestamp;
bytes encodedCall;
}
// solhint-disable-next-line const-name-snakecase
IGovernanceSettings public constant governanceSettings =
IGovernanceSettings(0x1000000000000000000000000000000000000007);
address private initialGovernance;
bool private initialised;
bool public productionMode;
bool private executing;
mapping(bytes4 => TimelockedCall) public timelockedCalls;
event GovernanceCallTimelocked(bytes4 selector, uint256 allowedAfterTimestamp, bytes encodedCall);
event TimelockedGovernanceCallExecuted(bytes4 selector, uint256 timestamp);
event TimelockedGovernanceCallCanceled(bytes4 selector, uint256 timestamp);
event GovernanceInitialised(address initialGovernance);
event GovernedProductionModeEntered(address governanceSettings);
modifier onlyGovernance {
if (executing || !productionMode) {
_beforeExecute();
_;
} else {
_recordTimelockedCall(msg.data);
}
}
modifier onlyImmediateGovernance () {
_checkOnlyGovernance();
_;
}
constructor(address _initialGovernance) {
if (_initialGovernance != address(0)) {
initialise(_initialGovernance);
}
}
/**
* @notice Execute the timelocked governance calls once the timelock period expires.
* @dev Only executor can call this method.
* @param _selector The method selector (only one timelocked call per method is stored).
*/
function executeGovernanceCall(bytes4 _selector) external {
require(governanceSettings.isExecutor(msg.sender), "only executor");
TimelockedCall storage call = timelockedCalls[_selector];
require(call.allowedAfterTimestamp != 0, "timelock: invalid selector");
require(block.timestamp >= call.allowedAfterTimestamp, "timelock: not allowed yet");
bytes memory encodedCall = call.encodedCall;
delete timelockedCalls[_selector];
executing = true;
//solhint-disable-next-line avoid-low-level-calls
(bool success,) = address(this).call(encodedCall);
executing = false;
emit TimelockedGovernanceCallExecuted(_selector, block.timestamp);
_passReturnOrRevert(success);
}
/**
* Cancel a timelocked governance call before it has been executed.
* @dev Only governance can call this method.
* @param _selector The method selector.
*/
function cancelGovernanceCall(bytes4 _selector) external onlyImmediateGovernance {
require(timelockedCalls[_selector].allowedAfterTimestamp != 0, "timelock: invalid selector");
emit TimelockedGovernanceCallCanceled(_selector, block.timestamp);
delete timelockedCalls[_selector];
}
/**
* Enter the production mode after all the initial governance settings have been set.
* This enables timelocks and the governance is afterwards obtained by calling
* governanceSettings.getGovernanceAddress().
*/
function switchToProductionMode() external {
_checkOnlyGovernance();
require(!productionMode, "already in production mode");
initialGovernance = address(0);
productionMode = true;
emit GovernedProductionModeEntered(address(governanceSettings));
}
/**
* @notice Initialize the governance address if not first initialized.
*/
function initialise(address _initialGovernance) public virtual {
require(initialised == false, "initialised != false");
initialised = true;
initialGovernance = _initialGovernance;
emit GovernanceInitialised(_initialGovernance);
}
/**
* Returns the current effective governance address.
*/
function governance() public view returns (address) {
return productionMode ? governanceSettings.getGovernanceAddress() : initialGovernance;
}
function _beforeExecute() private {
if (executing) {
// can only be run from executeGovernanceCall(), where we check that only executor can call
// make sure nothing else gets executed, even in case of reentrancy
assert(msg.sender == address(this));
executing = false;
} else {
// must be called with: productionMode=false
// must check governance in this case
_checkOnlyGovernance();
}
}
function _recordTimelockedCall(bytes calldata _data) private {
_checkOnlyGovernance();
bytes4 selector;
//solhint-disable-next-line no-inline-assembly
assembly {
selector := calldataload(_data.offset)
}
uint256 timelock = governanceSettings.getTimelock();
uint256 allowedAt = block.timestamp + timelock;
timelockedCalls[selector] = TimelockedCall({
allowedAfterTimestamp: allowedAt,
encodedCall: _data
});
emit GovernanceCallTimelocked(selector, allowedAt, _data);
}
function _checkOnlyGovernance() private view {
require(msg.sender == governance(), "only governance");
}
function _passReturnOrRevert(bool _success) private pure {
// pass exact return or revert data - needs to be done in assembly
//solhint-disable-next-line no-inline-assembly
assembly {
let size := returndatasize()
let ptr := mload(0x40)
mstore(0x40, add(ptr, size))
returndatacopy(ptr, 0, size)
if _success {
return(ptr, size)
}
revert(ptr, size)
}
}
}
./contracts/token/interface/IICleanable.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.7.6 <0.9;
interface IICleanable {
/**
* Set the contract that is allowed to call history cleaning methods.
*/
function setCleanerContract(address _cleanerContract) external;
/**
* Set the cleanup block number.
* Historic data for the blocks before `cleanupBlockNumber` can be erased,
* history before that block should never be used since it can be inconsistent.
* In particular, cleanup block number must be before current vote power block.
* @param _blockNumber The new cleanup block number.
*/
function setCleanupBlockNumber(uint256 _blockNumber) external;
/**
* Get the current cleanup block number.
*/
function cleanupBlockNumber() external view returns (uint256);
}
./contracts/userInterfaces/IGovernanceSettings.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.7.6;
/**
* A special contract that holds Flare governance address.
* This contract enables updating governance address and timelock only by hard forking the network,
* meaning only by updating validator code.
*/
interface IGovernanceSettings {
/**
* Get the governance account address.
* The governance address can only be changed by a hardfork.
*/
function getGovernanceAddress() external view returns (address);
/**
* Get the time in seconds that must pass between a governance call and execution.
* The timelock value can only be changed by a hardfork.
*/
function getTimelock() external view returns (uint256);
/**
* Get the addresses of the accounts that are allowed to execute the timelocked governance calls
* once the timelock period expires.
* Executors can be changed without a hardfork, via a normal governance call.
*/
function getExecutors() external view returns (address[] memory);
/**
* Check whether an address is one of the executors.
*/
function isExecutor(address _address) external view returns (bool);
}
Contract ABI
[{"type":"constructor","stateMutability":"nonpayable","inputs":[{"type":"address","name":"_governance","internalType":"address"},{"type":"address","name":"_addressUpdater","internalType":"address"},{"type":"string","name":"_triggerContractName","internalType":"string"}]},{"type":"event","name":"CleanupBlockNumberSet","inputs":[{"type":"address","name":"theContract","internalType":"contract IICleanable","indexed":false},{"type":"uint256","name":"blockNumber","internalType":"uint256","indexed":false},{"type":"bool","name":"success","internalType":"bool","indexed":false}],"anonymous":false},{"type":"event","name":"GovernanceCallTimelocked","inputs":[{"type":"bytes4","name":"selector","internalType":"bytes4","indexed":false},{"type":"uint256","name":"allowedAfterTimestamp","internalType":"uint256","indexed":false},{"type":"bytes","name":"encodedCall","internalType":"bytes","indexed":false}],"anonymous":false},{"type":"event","name":"GovernanceInitialised","inputs":[{"type":"address","name":"initialGovernance","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"GovernedProductionModeEntered","inputs":[{"type":"address","name":"governanceSettings","internalType":"address","indexed":false}],"anonymous":false},{"type":"event","name":"RegistrationUpdated","inputs":[{"type":"address","name":"theContract","internalType":"contract IICleanable","indexed":false},{"type":"bool","name":"add","internalType":"bool","indexed":false}],"anonymous":false},{"type":"event","name":"TimelockedGovernanceCallCanceled","inputs":[{"type":"bytes4","name":"selector","internalType":"bytes4","indexed":false},{"type":"uint256","name":"timestamp","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"event","name":"TimelockedGovernanceCallExecuted","inputs":[{"type":"bytes4","name":"selector","internalType":"bytes4","indexed":false},{"type":"uint256","name":"timestamp","internalType":"uint256","indexed":false}],"anonymous":false},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"cancelGovernanceCall","inputs":[{"type":"bytes4","name":"_selector","internalType":"bytes4"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"executeGovernanceCall","inputs":[{"type":"bytes4","name":"_selector","internalType":"bytes4"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"_addressUpdater","internalType":"address"}],"name":"getAddressUpdater","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"governance","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract IGovernanceSettings"}],"name":"governanceSettings","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"initialise","inputs":[{"type":"address","name":"_initialGovernance","internalType":"address"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"productionMode","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"registerToken","inputs":[{"type":"address","name":"_cleanableToken","internalType":"contract IICleanable"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"contract IICleanable"}],"name":"registeredTokens","inputs":[{"type":"uint256","name":"","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"setCleanUpBlockNumber","inputs":[{"type":"uint256","name":"_blockNumber","internalType":"uint256"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"switchToProductionMode","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint256","name":"allowedAfterTimestamp","internalType":"uint256"},{"type":"bytes","name":"encodedCall","internalType":"bytes"}],"name":"timelockedCalls","inputs":[{"type":"bytes4","name":"","internalType":"bytes4"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"triggerContract","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"string","name":"","internalType":"string"}],"name":"triggerContractName","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"unregisterToken","inputs":[{"type":"address","name":"_cleanableToken","internalType":"contract IICleanable"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"updateContractAddresses","inputs":[{"type":"bytes32[]","name":"_contractNameHashes","internalType":"bytes32[]"},{"type":"address[]","name":"_contractAddresses","internalType":"address[]"}]}]
Contract Creation Code
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