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GENESIS at txn GENESIS_BBa0935Fa93Eb23de7990b47F0D96a8f75766d13
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Contract Name:
PolygonZkEVMTimelock
Compiler Version
v0.8.17+commit.8df45f5f
Contract Source Code (Solidity)
/**
*Submitted for verification at zkevm.polygonscan.com on 2023-03-28
*/
// SPDX-License-Identifier: AGPL-3.0
// File: contracts/interfaces/IPolygonZkEVMErrors.sol
pragma solidity 0.8.17;
interface IPolygonZkEVMErrors {
/**
* @dev Thrown when the pending state timeout exceeds the _HALT_AGGREGATION_TIMEOUT
*/
error PendingStateTimeoutExceedHaltAggregationTimeout();
/**
* @dev Thrown when the trusted aggregator timeout exceeds the _HALT_AGGREGATION_TIMEOUT
*/
error TrustedAggregatorTimeoutExceedHaltAggregationTimeout();
/**
* @dev Thrown when the caller is not the admin
*/
error OnlyAdmin();
/**
* @dev Thrown when the caller is not the trusted sequencer
*/
error OnlyTrustedSequencer();
/**
* @dev Thrown when the caller is not the trusted aggregator
*/
error OnlyTrustedAggregator();
/**
* @dev Thrown when attempting to sequence 0 batches
*/
error SequenceZeroBatches();
/**
* @dev Thrown when attempting to sequence or verify more batches than _MAX_VERIFY_BATCHES
*/
error ExceedMaxVerifyBatches();
/**
* @dev Thrown when the forced data does not match
*/
error ForcedDataDoesNotMatch();
/**
* @dev Thrown when the sequenced timestamp is below the forced minimum timestamp
*/
error SequencedTimestampBelowForcedTimestamp();
/**
* @dev Thrown when a global exit root is not zero and does not exist
*/
error GlobalExitRootNotExist();
/**
* @dev Thrown when transactions array length is above _MAX_TRANSACTIONS_BYTE_LENGTH.
*/
error TransactionsLengthAboveMax();
/**
* @dev Thrown when a sequenced timestamp is not inside a correct range.
*/
error SequencedTimestampInvalid();
/**
* @dev Thrown when there are more sequenced force batches than were actually submitted, should be unreachable
*/
error ForceBatchesOverflow();
/**
* @dev Thrown when there are more sequenced force batches than were actually submitted
*/
error TrustedAggregatorTimeoutNotExpired();
/**
* @dev Thrown when attempting to access a pending state that does not exist
*/
error PendingStateDoesNotExist();
/**
* @dev Thrown when the init num batch does not match with the one in the pending state
*/
error InitNumBatchDoesNotMatchPendingState();
/**
* @dev Thrown when the old state root of a certain batch does not exist
*/
error OldStateRootDoesNotExist();
/**
* @dev Thrown when the init verification batch is above the last verification batch
*/
error InitNumBatchAboveLastVerifiedBatch();
/**
* @dev Thrown when the final verification batch is below or equal the last verification batch
*/
error FinalNumBatchBelowLastVerifiedBatch();
/**
* @dev Thrown when the zkproof is not valid
*/
error InvalidProof();
/**
* @dev Thrown when attempting to consolidate a pending state not yet consolidable
*/
error PendingStateNotConsolidable();
/**
* @dev Thrown when attempting to consolidate a pending state that is already consolidated or does not exist
*/
error PendingStateInvalid();
/**
* @dev Thrown when the matic amount is below the necessary matic fee
*/
error NotEnoughMaticAmount();
/**
* @dev Thrown when attempting to sequence a force batch using sequenceForceBatches and the
* force timeout did not expire
*/
error ForceBatchTimeoutNotExpired();
/**
* @dev Thrown when attempting to set a new trusted aggregator timeout equal or bigger than current one
*/
error NewTrustedAggregatorTimeoutMustBeLower();
/**
* @dev Thrown when attempting to set a new pending state timeout equal or bigger than current one
*/
error NewPendingStateTimeoutMustBeLower();
/**
* @dev Thrown when attempting to set a new multiplier batch fee in a invalid range of values
*/
error InvalidRangeMultiplierBatchFee();
/**
* @dev Thrown when attempting to set a batch time target in an invalid range of values
*/
error InvalidRangeBatchTimeTarget();
/**
* @dev Thrown when the caller is not the pending admin
*/
error OnlyPendingAdmin();
/**
* @dev Thrown when the final pending state num is not in a valid range
*/
error FinalPendingStateNumInvalid();
/**
* @dev Thrown when the final num batch does not match with the one in the pending state
*/
error FinalNumBatchDoesNotMatchPendingState();
/**
* @dev Thrown when the stored root matches the new root proving a different state
*/
error StoredRootMustBeDifferentThanNewRoot();
/**
* @dev Thrown when the batch is already verified when attempting to activate the emergency state
*/
error BatchAlreadyVerified();
/**
* @dev Thrown when the batch is not sequenced or not at the end of a sequence when attempting to activate the emergency state
*/
error BatchNotSequencedOrNotSequenceEnd();
/**
* @dev Thrown when the halt timeout is not expired when attempting to activate the emergency state
*/
error HaltTimeoutNotExpired();
/**
* @dev Thrown when the old accumulate input hash does not exist
*/
error OldAccInputHashDoesNotExist();
/**
* @dev Thrown when the new accumulate input hash does not exist
*/
error NewAccInputHashDoesNotExist();
}
// File: contracts/lib/EmergencyManager.sol
pragma solidity 0.8.17;
/**
* @dev Contract helper responsible to manage the emergency state
*/
contract EmergencyManager {
/**
* @dev Thrown when emergency state is active, and the function requires otherwise
*/
error OnlyNotEmergencyState();
/**
* @dev Thrown when emergency state is not active, and the function requires otherwise
*/
error OnlyEmergencyState();
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
*/
uint256[10] private _gap;
// Indicates whether the emergency state is active or not
bool public isEmergencyState;
/**
* @dev Emitted when emergency state is activated
*/
event EmergencyStateActivated();
/**
* @dev Emitted when emergency state is deactivated
*/
event EmergencyStateDeactivated();
/**
* @notice Only allows a function to be callable if emergency state is unactive
*/
modifier ifNotEmergencyState() {
if (isEmergencyState) {
revert OnlyNotEmergencyState();
}
_;
}
/**
* @notice Only allows a function to be callable if emergency state is active
*/
modifier ifEmergencyState() {
if (!isEmergencyState) {
revert OnlyEmergencyState();
}
_;
}
/**
* @notice Activate emergency state
*/
function _activateEmergencyState() internal virtual ifNotEmergencyState {
isEmergencyState = true;
emit EmergencyStateActivated();
}
/**
* @notice Deactivate emergency state
*/
function _deactivateEmergencyState() internal virtual ifEmergencyState {
isEmergencyState = false;
emit EmergencyStateDeactivated();
}
}
// File: contracts/interfaces/IPolygonZkEVMBridge.sol
pragma solidity 0.8.17;
interface IPolygonZkEVMBridge {
/**
* @dev Thrown when sender is not the PolygonZkEVM address
*/
error OnlyPolygonZkEVM();
/**
* @dev Thrown when the destination network is invalid
*/
error DestinationNetworkInvalid();
/**
* @dev Thrown when the amount does not match msg.value
*/
error AmountDoesNotMatchMsgValue();
/**
* @dev Thrown when user is bridging tokens and is also sending a value
*/
error MsgValueNotZero();
/**
* @dev Thrown when the Ether transfer on claimAsset fails
*/
error EtherTransferFailed();
/**
* @dev Thrown when the message transaction on claimMessage fails
*/
error MessageFailed();
/**
* @dev Thrown when the global exit root does not exist
*/
error GlobalExitRootInvalid();
/**
* @dev Thrown when the smt proof does not match
*/
error InvalidSmtProof();
/**
* @dev Thrown when an index is already claimed
*/
error AlreadyClaimed();
/**
* @dev Thrown when the owner of permit does not match the sender
*/
error NotValidOwner();
/**
* @dev Thrown when the spender of the permit does not match this contract address
*/
error NotValidSpender();
/**
* @dev Thrown when the amount of the permit does not match
*/
error NotValidAmount();
/**
* @dev Thrown when the permit data contains an invalid signature
*/
error NotValidSignature();
function bridgeAsset(
uint32 destinationNetwork,
address destinationAddress,
uint256 amount,
address token,
bool forceUpdateGlobalExitRoot,
bytes calldata permitData
) external payable;
function bridgeMessage(
uint32 destinationNetwork,
address destinationAddress,
bool forceUpdateGlobalExitRoot,
bytes calldata metadata
) external payable;
function claimAsset(
bytes32[32] calldata smtProof,
uint32 index,
bytes32 mainnetExitRoot,
bytes32 rollupExitRoot,
uint32 originNetwork,
address originTokenAddress,
uint32 destinationNetwork,
address destinationAddress,
uint256 amount,
bytes calldata metadata
) external;
function claimMessage(
bytes32[32] calldata smtProof,
uint32 index,
bytes32 mainnetExitRoot,
bytes32 rollupExitRoot,
uint32 originNetwork,
address originAddress,
uint32 destinationNetwork,
address destinationAddress,
uint256 amount,
bytes calldata metadata
) external;
function updateGlobalExitRoot() external;
function activateEmergencyState() external;
function deactivateEmergencyState() external;
}
// File: contracts/interfaces/IBasePolygonZkEVMGlobalExitRoot.sol
pragma solidity 0.8.17;
interface IBasePolygonZkEVMGlobalExitRoot {
/**
* @dev Thrown when the caller is not the allowed contracts
*/
error OnlyAllowedContracts();
function updateExitRoot(bytes32 newRollupExitRoot) external;
function globalExitRootMap(
bytes32 globalExitRootNum
) external returns (uint256);
}
// File: contracts/interfaces/IPolygonZkEVMGlobalExitRoot.sol
pragma solidity 0.8.17;
interface IPolygonZkEVMGlobalExitRoot is IBasePolygonZkEVMGlobalExitRoot {
function getLastGlobalExitRoot() external view returns (bytes32);
}
// File: contracts/interfaces/IVerifierRollup.sol
pragma solidity 0.8.17;
/**
* @dev Define interface verifier
*/
interface IVerifierRollup {
function verifyProof(
bytes memory proof,
uint256[1] memory pubSignals
) external view returns (bool);
}
// File: @openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library AddressUpgradeable {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// File: @openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol
// OpenZeppelin Contracts (last updated v4.8.1) (proxy/utils/Initializable.sol)
pragma solidity ^0.8.2;
/**
* @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed
* behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an
* external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer
* function so it can only be called once. The {initializer} modifier provided by this contract will have this effect.
*
* The initialization functions use a version number. Once a version number is used, it is consumed and cannot be
* reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in
* case an upgrade adds a module that needs to be initialized.
*
* For example:
*
* [.hljs-theme-light.nopadding]
* ```
* contract MyToken is ERC20Upgradeable {
* function initialize() initializer public {
* __ERC20_init("MyToken", "MTK");
* }
* }
* contract MyTokenV2 is MyToken, ERC20PermitUpgradeable {
* function initializeV2() reinitializer(2) public {
* __ERC20Permit_init("MyToken");
* }
* }
* ```
*
* TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as
* possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}.
*
* CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure
* that all initializers are idempotent. This is not verified automatically as constructors are by Solidity.
*
* [CAUTION]
* ====
* Avoid leaving a contract uninitialized.
*
* An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation
* contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke
* the {_disableInitializers} function in the constructor to automatically lock it when it is deployed:
*
* [.hljs-theme-light.nopadding]
* ```
* /// @custom:oz-upgrades-unsafe-allow constructor
* constructor() {
* _disableInitializers();
* }
* ```
* ====
*/
abstract contract Initializable {
/**
* @dev Indicates that the contract has been initialized.
* @custom:oz-retyped-from bool
*/
uint8 private _initialized;
/**
* @dev Indicates that the contract is in the process of being initialized.
*/
bool private _initializing;
/**
* @dev Triggered when the contract has been initialized or reinitialized.
*/
event Initialized(uint8 version);
/**
* @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope,
* `onlyInitializing` functions can be used to initialize parent contracts.
*
* Similar to `reinitializer(1)`, except that functions marked with `initializer` can be nested in the context of a
* constructor.
*
* Emits an {Initialized} event.
*/
modifier initializer() {
bool isTopLevelCall = !_initializing;
require(
(isTopLevelCall && _initialized < 1) || (!AddressUpgradeable.isContract(address(this)) && _initialized == 1),
"Initializable: contract is already initialized"
);
_initialized = 1;
if (isTopLevelCall) {
_initializing = true;
}
_;
if (isTopLevelCall) {
_initializing = false;
emit Initialized(1);
}
}
/**
* @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the
* contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be
* used to initialize parent contracts.
*
* A reinitializer may be used after the original initialization step. This is essential to configure modules that
* are added through upgrades and that require initialization.
*
* When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer`
* cannot be nested. If one is invoked in the context of another, execution will revert.
*
* Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in
* a contract, executing them in the right order is up to the developer or operator.
*
* WARNING: setting the version to 255 will prevent any future reinitialization.
*
* Emits an {Initialized} event.
*/
modifier reinitializer(uint8 version) {
require(!_initializing && _initialized < version, "Initializable: contract is already initialized");
_initialized = version;
_initializing = true;
_;
_initializing = false;
emit Initialized(version);
}
/**
* @dev Modifier to protect an initialization function so that it can only be invoked by functions with the
* {initializer} and {reinitializer} modifiers, directly or indirectly.
*/
modifier onlyInitializing() {
require(_initializing, "Initializable: contract is not initializing");
_;
}
/**
* @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call.
* Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized
* to any version. It is recommended to use this to lock implementation contracts that are designed to be called
* through proxies.
*
* Emits an {Initialized} event the first time it is successfully executed.
*/
function _disableInitializers() internal virtual {
require(!_initializing, "Initializable: contract is initializing");
if (_initialized < type(uint8).max) {
_initialized = type(uint8).max;
emit Initialized(type(uint8).max);
}
}
/**
* @dev Returns the highest version that has been initialized. See {reinitializer}.
*/
function _getInitializedVersion() internal view returns (uint8) {
return _initialized;
}
/**
* @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}.
*/
function _isInitializing() internal view returns (bool) {
return _initializing;
}
}
// File: @openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract ContextUpgradeable is Initializable {
function __Context_init() internal onlyInitializing {
}
function __Context_init_unchained() internal onlyInitializing {
}
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[50] private __gap;
}
// File: @openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol
// OpenZeppelin Contracts (last updated v4.7.0) (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which provides a basic access control mechanism, where
* there is an account (an owner) that can be granted exclusive access to
* specific functions.
*
* By default, the owner account will be the one that deploys the contract. This
* can later be changed with {transferOwnership}.
*
* This module is used through inheritance. It will make available the modifier
* `onlyOwner`, which can be applied to your functions to restrict their use to
* the owner.
*/
abstract contract OwnableUpgradeable is Initializable, ContextUpgradeable {
address private _owner;
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the deployer as the initial owner.
*/
function __Ownable_init() internal onlyInitializing {
__Ownable_init_unchained();
}
function __Ownable_init_unchained() internal onlyInitializing {
_transferOwnership(_msgSender());
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
_checkOwner();
_;
}
/**
* @dev Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if the sender is not the owner.
*/
function _checkOwner() internal view virtual {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_transferOwnership(address(0));
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Can only be called by the current owner.
*/
function transferOwnership(address newOwner) public virtual onlyOwner {
require(newOwner != address(0), "Ownable: new owner is the zero address");
_transferOwnership(newOwner);
}
/**
* @dev Transfers ownership of the contract to a new account (`newOwner`).
* Internal function without access restriction.
*/
function _transferOwnership(address newOwner) internal virtual {
address oldOwner = _owner;
_owner = newOwner;
emit OwnershipTransferred(oldOwner, newOwner);
}
/**
* @dev This empty reserved space is put in place to allow future versions to add new
* variables without shifting down storage in the inheritance chain.
* See https://docs.openzeppelin.com/contracts/4.x/upgradeable#storage_gaps
*/
uint256[49] private __gap;
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/extensions/draft-IERC20PermitUpgradeable.sol
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
* https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
*
* Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
* presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
* need to send a transaction, and thus is not required to hold Ether at all.
*/
interface IERC20PermitUpgradeable {
/**
* @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
* given ``owner``'s signed approval.
*
* IMPORTANT: The same issues {IERC20-approve} has related to transaction
* ordering also apply here.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `deadline` must be a timestamp in the future.
* - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
* over the EIP712-formatted function arguments.
* - the signature must use ``owner``'s current nonce (see {nonces}).
*
* For more information on the signature format, see the
* https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
* section].
*/
function permit(
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) external;
/**
* @dev Returns the current nonce for `owner`. This value must be
* included whenever a signature is generated for {permit}.
*
* Every successful call to {permit} increases ``owner``'s nonce by one. This
* prevents a signature from being used multiple times.
*/
function nonces(address owner) external view returns (uint256);
/**
* @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
*/
// solhint-disable-next-line func-name-mixedcase
function DOMAIN_SEPARATOR() external view returns (bytes32);
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/IERC20Upgradeable.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20Upgradeable {
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
}
// File: @openzeppelin/contracts-upgradeable/token/ERC20/utils/SafeERC20Upgradeable.sol
// OpenZeppelin Contracts (last updated v4.8.0) (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20Upgradeable {
using AddressUpgradeable for address;
function safeTransfer(
IERC20Upgradeable token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20Upgradeable token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20Upgradeable token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
function safePermit(
IERC20PermitUpgradeable token,
address owner,
address spender,
uint256 value,
uint256 deadline,
uint8 v,
bytes32 r,
bytes32 s
) internal {
uint256 nonceBefore = token.nonces(owner);
token.permit(owner, spender, value, deadline, v, r, s);
uint256 nonceAfter = token.nonces(owner);
require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20Upgradeable token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File: contracts/PolygonZkEVM.sol
pragma solidity 0.8.17;
/**
* Contract responsible for managing the states and the updates of L2 network.
* There will be a trusted sequencer, which is able to send transactions.
* Any user can force some transaction and the sequencer will have a timeout to add them in the queue.
* The sequenced state is deterministic and can be precalculated before it's actually verified by a zkProof.
* The aggregators will be able to verify the sequenced state with zkProofs and therefore make available the withdrawals from L2 network.
* To enter and exit of the L2 network will be used a PolygonZkEVMBridge smart contract that will be deployed in both networks.
*/
contract PolygonZkEVM is
OwnableUpgradeable,
EmergencyManager,
IPolygonZkEVMErrors
{
using SafeERC20Upgradeable for IERC20Upgradeable;
/**
* @notice Struct which will be used to call sequenceBatches
* @param transactions L2 ethereum transactions EIP-155 or pre-EIP-155 with signature:
* EIP-155: rlp(nonce, gasprice, gasLimit, to, value, data, chainid, 0, 0,) || v || r || s
* pre-EIP-155: rlp(nonce, gasprice, gasLimit, to, value, data) || v || r || s
* @param globalExitRoot Global exit root of the batch
* @param timestamp Sequenced timestamp of the batch
* @param minForcedTimestamp Minimum timestamp of the force batch data, empty when non forced batch
*/
struct BatchData {
bytes transactions;
bytes32 globalExitRoot;
uint64 timestamp;
uint64 minForcedTimestamp;
}
/**
* @notice Struct which will be used to call sequenceForceBatches
* @param transactions L2 ethereum transactions EIP-155 or pre-EIP-155 with signature:
* EIP-155: rlp(nonce, gasprice, gasLimit, to, value, data, chainid, 0, 0,) || v || r || s
* pre-EIP-155: rlp(nonce, gasprice, gasLimit, to, value, data) || v || r || s
* @param globalExitRoot Global exit root of the batch
* @param minForcedTimestamp Indicates the minimum sequenced timestamp of the batch
*/
struct ForcedBatchData {
bytes transactions;
bytes32 globalExitRoot;
uint64 minForcedTimestamp;
}
/**
* @notice Struct which will be stored for every batch sequence
* @param accInputHash Hash chain that contains all the information to process a batch:
* keccak256(bytes32 oldAccInputHash, keccak256(bytes transactions), bytes32 globalExitRoot, uint64 timestamp, address seqAddress)
* @param sequencedTimestamp Sequenced timestamp
* @param previousLastBatchSequenced Previous last batch sequenced before the current one, this is used to properly calculate the fees
*/
struct SequencedBatchData {
bytes32 accInputHash;
uint64 sequencedTimestamp;
uint64 previousLastBatchSequenced;
}
/**
* @notice Struct to store the pending states
* Pending state will be an intermediary state, that after a timeout can be consolidated, which means that will be added
* to the state root mapping, and the global exit root will be updated
* This is a protection mechanism against soundness attacks, that will be turned off in the future
* @param timestamp Timestamp where the pending state is added to the queue
* @param lastVerifiedBatch Last batch verified batch of this pending state
* @param exitRoot Pending exit root
* @param stateRoot Pending state root
*/
struct PendingState {
uint64 timestamp;
uint64 lastVerifiedBatch;
bytes32 exitRoot;
bytes32 stateRoot;
}
/**
* @notice Struct to call initialize, this saves gas because pack the parameters and avoid stack too deep errors.
* @param admin Admin address
* @param trustedSequencer Trusted sequencer address
* @param pendingStateTimeout Pending state timeout
* @param trustedAggregator Trusted aggregator
* @param trustedAggregatorTimeout Trusted aggregator timeout
*/
struct InitializePackedParameters {
address admin;
address trustedSequencer;
uint64 pendingStateTimeout;
address trustedAggregator;
uint64 trustedAggregatorTimeout;
}
// Modulus zkSNARK
uint256 internal constant _RFIELD =
21888242871839275222246405745257275088548364400416034343698204186575808495617;
// Max transactions bytes that can be added in a single batch
// Max keccaks circuit = (2**23 / 155286) * 44 = 2376
// Bytes per keccak = 136
// Minimum Static keccaks batch = 2
// Max bytes allowed = (2376 - 2) * 136 = 322864 bytes - 1 byte padding
// Rounded to 300000 bytes
uint256 internal constant _MAX_TRANSACTIONS_BYTE_LENGTH = 300000;
// Force batch timeout
uint64 internal constant _FORCE_BATCH_TIMEOUT = 5 days;
// If a sequenced batch exceeds this timeout without being verified, the contract enters in emergency mode
uint64 internal constant _HALT_AGGREGATION_TIMEOUT = 1 weeks;
// Maximum batches that can be verified in one call. It depends on our current metrics
// This should be a protection against someone that tries to generate huge chunk of invalid batches, and we can't prove otherwise before the pending timeout expires
uint64 internal constant _MAX_VERIFY_BATCHES = 1000;
// Max batch multiplier per verification
uint256 internal constant _MAX_BATCH_MULTIPLIER = 12;
// Max batch fee value
uint256 internal constant _MAX_BATCH_FEE = 1000 ether;
// Min value batch fee
uint256 internal constant _MIN_BATCH_FEE = 1 gwei;
// MATIC token address
IERC20Upgradeable public immutable matic;
// Rollup verifier interface
IVerifierRollup public immutable rollupVerifier;
// Global Exit Root interface
IPolygonZkEVMGlobalExitRoot public immutable globalExitRootManager;
// PolygonZkEVM Bridge Address
IPolygonZkEVMBridge public immutable bridgeAddress;
// L2 chain identifier
uint64 public immutable chainID;
// L2 chain identifier
uint64 public immutable forkID;
// Time target of the verification of a batch
// Adaptatly the batchFee will be updated to achieve this target
uint64 public verifyBatchTimeTarget;
// Batch fee multiplier with 3 decimals that goes from 1000 - 1023
uint16 public multiplierBatchFee;
// Trusted sequencer address
address public trustedSequencer;
// Current matic fee per batch sequenced
uint256 public batchFee;
// Queue of forced batches with their associated data
// ForceBatchNum --> hashedForcedBatchData
// hashedForcedBatchData: hash containing the necessary information to force a batch:
// keccak256(keccak256(bytes transactions), bytes32 globalExitRoot, unint64 minForcedTimestamp)
mapping(uint64 => bytes32) public forcedBatches;
// Queue of batches that defines the virtual state
// SequenceBatchNum --> SequencedBatchData
mapping(uint64 => SequencedBatchData) public sequencedBatches;
// Last sequenced timestamp
uint64 public lastTimestamp;
// Last batch sent by the sequencers
uint64 public lastBatchSequenced;
// Last forced batch included in the sequence
uint64 public lastForceBatchSequenced;
// Last forced batch
uint64 public lastForceBatch;
// Last batch verified by the aggregators
uint64 public lastVerifiedBatch;
// Trusted aggregator address
address public trustedAggregator;
// State root mapping
// BatchNum --> state root
mapping(uint64 => bytes32) public batchNumToStateRoot;
// Trusted sequencer URL
string public trustedSequencerURL;
// L2 network name
string public networkName;
// Pending state mapping
// pendingStateNumber --> PendingState
mapping(uint256 => PendingState) public pendingStateTransitions;
// Last pending state
uint64 public lastPendingState;
// Last pending state consolidated
uint64 public lastPendingStateConsolidated;
// Once a pending state exceeds this timeout it can be consolidated
uint64 public pendingStateTimeout;
// Trusted aggregator timeout, if a sequence is not verified in this time frame,
// everyone can verify that sequence
uint64 public trustedAggregatorTimeout;
// Address that will be able to adjust contract parameters or stop the emergency state
address public admin;
// This account will be able to accept the admin role
address public pendingAdmin;
/**
* @dev Emitted when the trusted sequencer sends a new batch of transactions
*/
event SequenceBatches(uint64 indexed numBatch);
/**
* @dev Emitted when a batch is forced
*/
event ForceBatch(
uint64 indexed forceBatchNum,
bytes32 lastGlobalExitRoot,
address sequencer,
bytes transactions
);
/**
* @dev Emitted when forced batches are sequenced by not the trusted sequencer
*/
event SequenceForceBatches(uint64 indexed numBatch);
/**
* @dev Emitted when a aggregator verifies batches
*/
event VerifyBatches(
uint64 indexed numBatch,
bytes32 stateRoot,
address indexed aggregator
);
/**
* @dev Emitted when the trusted aggregator verifies batches
*/
event VerifyBatchesTrustedAggregator(
uint64 indexed numBatch,
bytes32 stateRoot,
address indexed aggregator
);
/**
* @dev Emitted when pending state is consolidated
*/
event ConsolidatePendingState(
uint64 indexed numBatch,
bytes32 stateRoot,
uint64 indexed pendingStateNum
);
/**
* @dev Emitted when the admin update the trusted sequencer address
*/
event SetTrustedSequencer(address newTrustedSequencer);
/**
* @dev Emitted when the admin update the sequencer URL
*/
event SetTrustedSequencerURL(string newTrustedSequencerURL);
/**
* @dev Emitted when the admin update the trusted aggregator timeout
*/
event SetTrustedAggregatorTimeout(uint64 newTrustedAggregatorTimeout);
/**
* @dev Emitted when the admin update the pending state timeout
*/
event SetPendingStateTimeout(uint64 newPendingStateTimeout);
/**
* @dev Emitted when the admin update the trusted aggregator address
*/
event SetTrustedAggregator(address newTrustedAggregator);
/**
* @dev Emitted when the admin update the multiplier batch fee
*/
event SetMultiplierBatchFee(uint16 newMultiplierBatchFee);
/**
* @dev Emitted when the admin update the verify batch timeout
*/
event SetVerifyBatchTimeTarget(uint64 newVerifyBatchTimeTarget);
/**
* @dev Emitted when the admin starts the two-step transfer role setting a new pending admin
*/
event TransferAdminRole(address newPendingAdmin);
/**
* @dev Emitted when the pending admin accepts the admin role
*/
event AcceptAdminRole(address newAdmin);
/**
* @dev Emitted when is proved a different state given the same batches
*/
event ProveNonDeterministicPendingState(
bytes32 storedStateRoot,
bytes32 provedStateRoot
);
/**
* @dev Emitted when the trusted aggregator overrides pending state
*/
event OverridePendingState(
uint64 indexed numBatch,
bytes32 stateRoot,
address indexed aggregator
);
/**
* @dev Emitted everytime the forkID is updated, this includes the first initialization of the contract
* This event is intended to be emitted for every upgrade of the contract with relevant changes for the nodes
*/
event UpdateZkEVMVersion(uint64 numBatch, uint64 forkID, string version);
/**
* @param _globalExitRootManager Global exit root manager address
* @param _matic MATIC token address
* @param _rollupVerifier Rollup verifier address
* @param _bridgeAddress Bridge address
* @param _chainID L2 chainID
* @param _forkID Fork Id
*/
constructor(
IPolygonZkEVMGlobalExitRoot _globalExitRootManager,
IERC20Upgradeable _matic,
IVerifierRollup _rollupVerifier,
IPolygonZkEVMBridge _bridgeAddress,
uint64 _chainID,
uint64 _forkID
) {
globalExitRootManager = _globalExitRootManager;
matic = _matic;
rollupVerifier = _rollupVerifier;
bridgeAddress = _bridgeAddress;
chainID = _chainID;
forkID = _forkID;
}
/**
* @param initializePackedParameters Struct to save gas and avoid stack too deep errors
* @param genesisRoot Rollup genesis root
* @param _trustedSequencerURL Trusted sequencer URL
* @param _networkName L2 network name
*/
function initialize(
InitializePackedParameters calldata initializePackedParameters,
bytes32 genesisRoot,
string memory _trustedSequencerURL,
string memory _networkName,
string calldata _version
) external initializer {
admin = initializePackedParameters.admin;
trustedSequencer = initializePackedParameters.trustedSequencer;
trustedAggregator = initializePackedParameters.trustedAggregator;
batchNumToStateRoot[0] = genesisRoot;
trustedSequencerURL = _trustedSequencerURL;
networkName = _networkName;
// Check initialize parameters
if (
initializePackedParameters.pendingStateTimeout >
_HALT_AGGREGATION_TIMEOUT
) {
revert PendingStateTimeoutExceedHaltAggregationTimeout();
}
pendingStateTimeout = initializePackedParameters.pendingStateTimeout;
if (
initializePackedParameters.trustedAggregatorTimeout >
_HALT_AGGREGATION_TIMEOUT
) {
revert TrustedAggregatorTimeoutExceedHaltAggregationTimeout();
}
trustedAggregatorTimeout = initializePackedParameters
.trustedAggregatorTimeout;
// Constant variables
batchFee = 10 ** 18; // 1 Matic
verifyBatchTimeTarget = 30 minutes;
multiplierBatchFee = 1002;
// Initialize OZ contracts
__Ownable_init_unchained();
// emit version event
emit UpdateZkEVMVersion(0, forkID, _version);
}
modifier onlyAdmin() {
if (admin != msg.sender) {
revert OnlyAdmin();
}
_;
}
modifier onlyTrustedSequencer() {
if (trustedSequencer != msg.sender) {
revert OnlyTrustedSequencer();
}
_;
}
modifier onlyTrustedAggregator() {
if (trustedAggregator != msg.sender) {
revert OnlyTrustedAggregator();
}
_;
}
/////////////////////////////////////
// Sequence/Verify batches functions
////////////////////////////////////
/**
* @notice Allows a sequencer to send multiple batches
* @param batches Struct array which holds the necessary data to append new batches to the sequence
* @param l2Coinbase Address that will receive the fees from L2
*/
function sequenceBatches(
BatchData[] calldata batches,
address l2Coinbase
) external ifNotEmergencyState onlyTrustedSequencer {
uint256 batchesNum = batches.length;
if (batchesNum == 0) {
revert SequenceZeroBatches();
}
if (batchesNum > _MAX_VERIFY_BATCHES) {
revert ExceedMaxVerifyBatches();
}
// Store storage variables in memory, to save gas, because will be overrided multiple times
uint64 currentTimestamp = lastTimestamp;
uint64 currentBatchSequenced = lastBatchSequenced;
uint64 currentLastForceBatchSequenced = lastForceBatchSequenced;
bytes32 currentAccInputHash = sequencedBatches[currentBatchSequenced]
.accInputHash;
// Store in a temporal variable, for avoid access again the storage slot
uint64 initLastForceBatchSequenced = currentLastForceBatchSequenced;
for (uint256 i = 0; i < batchesNum; i++) {
// Load current sequence
BatchData memory currentBatch = batches[i];
// Store the current transactions hash since can be used more than once for gas saving
bytes32 currentTransactionsHash = keccak256(
currentBatch.transactions
);
// Check if it's a forced batch
if (currentBatch.minForcedTimestamp > 0) {
currentLastForceBatchSequenced++;
// Check forced data matches
bytes32 hashedForcedBatchData = keccak256(
abi.encodePacked(
currentTransactionsHash,
currentBatch.globalExitRoot,
currentBatch.minForcedTimestamp
)
);
if (
hashedForcedBatchData !=
forcedBatches[currentLastForceBatchSequenced]
) {
revert ForcedDataDoesNotMatch();
}
// Delete forceBatch data since won't be used anymore
delete forcedBatches[currentLastForceBatchSequenced];
// Check timestamp is bigger than min timestamp
if (currentBatch.timestamp < currentBatch.minForcedTimestamp) {
revert SequencedTimestampBelowForcedTimestamp();
}
} else {
// Check global exit root exists with proper batch length. These checks are already done in the forceBatches call
// Note that the sequencer can skip setting a global exit root putting zeros
if (
currentBatch.globalExitRoot != bytes32(0) &&
globalExitRootManager.globalExitRootMap(
currentBatch.globalExitRoot
) ==
0
) {
revert GlobalExitRootNotExist();
}
if (
currentBatch.transactions.length >
_MAX_TRANSACTIONS_BYTE_LENGTH
) {
revert TransactionsLengthAboveMax();
}
}
// Check Batch timestamps are correct
if (
currentBatch.timestamp < currentTimestamp ||
currentBatch.timestamp > block.timestamp
) {
revert SequencedTimestampInvalid();
}
// Calculate next accumulated input hash
currentAccInputHash = keccak256(
abi.encodePacked(
currentAccInputHash,
currentTransactionsHash,
currentBatch.globalExitRoot,
currentBatch.timestamp,
l2Coinbase
)
);
// Update timestamp
currentTimestamp = currentBatch.timestamp;
}
// Update currentBatchSequenced
currentBatchSequenced += uint64(batchesNum);
// Sanity check, should be unreachable
if (currentLastForceBatchSequenced > lastForceBatch) {
revert ForceBatchesOverflow();
}
uint256 nonForcedBatchesSequenced = batchesNum -
(currentLastForceBatchSequenced - initLastForceBatchSequenced);
// Update sequencedBatches mapping
sequencedBatches[currentBatchSequenced] = SequencedBatchData({
accInputHash: currentAccInputHash,
sequencedTimestamp: uint64(block.timestamp),
previousLastBatchSequenced: lastBatchSequenced
});
// Store back the storage variables
lastTimestamp = currentTimestamp;
lastBatchSequenced = currentBatchSequenced;
if (currentLastForceBatchSequenced != initLastForceBatchSequenced)
lastForceBatchSequenced = currentLastForceBatchSequenced;
// Pay collateral for every non-forced batch submitted
matic.safeTransferFrom(
msg.sender,
address(this),
getCurrentBatchFee() * nonForcedBatchesSequenced
);
// Consolidate pending state if possible
_tryConsolidatePendingState();
// Update global exit root if there are new deposits
bridgeAddress.updateGlobalExitRoot();
emit SequenceBatches(currentBatchSequenced);
}
/**
* @notice Allows an aggregator to verify multiple batches
* @param pendingStateNum Init pending state, 0 if consolidated state is used
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function verifyBatches(
uint64 pendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) external ifNotEmergencyState {
// Check if the trusted aggregator timeout expired,
// Note that the sequencedBatches struct must exists for this finalNewBatch, if not newAccInputHash will be 0
if (
sequencedBatches[finalNewBatch].sequencedTimestamp +
trustedAggregatorTimeout >
block.timestamp
) {
revert TrustedAggregatorTimeoutNotExpired();
}
if (finalNewBatch - initNumBatch > _MAX_VERIFY_BATCHES) {
revert ExceedMaxVerifyBatches();
}
_verifyAndRewardBatches(
pendingStateNum,
initNumBatch,
finalNewBatch,
newLocalExitRoot,
newStateRoot,
proof
);
// Update batch fees
_updateBatchFee(finalNewBatch);
if (pendingStateTimeout == 0) {
// Consolidate state
lastVerifiedBatch = finalNewBatch;
batchNumToStateRoot[finalNewBatch] = newStateRoot;
// Clean pending state if any
if (lastPendingState > 0) {
lastPendingState = 0;
lastPendingStateConsolidated = 0;
}
// Interact with globalExitRootManager
globalExitRootManager.updateExitRoot(newLocalExitRoot);
} else {
// Consolidate pending state if possible
_tryConsolidatePendingState();
// Update pending state
lastPendingState++;
pendingStateTransitions[lastPendingState] = PendingState({
timestamp: uint64(block.timestamp),
lastVerifiedBatch: finalNewBatch,
exitRoot: newLocalExitRoot,
stateRoot: newStateRoot
});
}
emit VerifyBatches(finalNewBatch, newStateRoot, msg.sender);
}
/**
* @notice Allows an aggregator to verify multiple batches
* @param pendingStateNum Init pending state, 0 if consolidated state is used
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function verifyBatchesTrustedAggregator(
uint64 pendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) external onlyTrustedAggregator {
_verifyAndRewardBatches(
pendingStateNum,
initNumBatch,
finalNewBatch,
newLocalExitRoot,
newStateRoot,
proof
);
// Consolidate state
lastVerifiedBatch = finalNewBatch;
batchNumToStateRoot[finalNewBatch] = newStateRoot;
// Clean pending state if any
if (lastPendingState > 0) {
lastPendingState = 0;
lastPendingStateConsolidated = 0;
}
// Interact with globalExitRootManager
globalExitRootManager.updateExitRoot(newLocalExitRoot);
emit VerifyBatchesTrustedAggregator(
finalNewBatch,
newStateRoot,
msg.sender
);
}
/**
* @notice Verify and reward batches internal function
* @param pendingStateNum Init pending state, 0 if consolidated state is used
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function _verifyAndRewardBatches(
uint64 pendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) internal {
bytes32 oldStateRoot;
uint64 currentLastVerifiedBatch = getLastVerifiedBatch();
// Use pending state if specified, otherwise use consolidated state
if (pendingStateNum != 0) {
// Check that pending state exist
// Already consolidated pending states can be used aswell
if (pendingStateNum > lastPendingState) {
revert PendingStateDoesNotExist();
}
// Check choosen pending state
PendingState storage currentPendingState = pendingStateTransitions[
pendingStateNum
];
// Get oldStateRoot from pending batch
oldStateRoot = currentPendingState.stateRoot;
// Check initNumBatch matches the pending state
if (initNumBatch != currentPendingState.lastVerifiedBatch) {
revert InitNumBatchDoesNotMatchPendingState();
}
} else {
// Use consolidated state
oldStateRoot = batchNumToStateRoot[initNumBatch];
if (oldStateRoot == bytes32(0)) {
revert OldStateRootDoesNotExist();
}
// Check initNumBatch is inside the range, sanity check
if (initNumBatch > currentLastVerifiedBatch) {
revert InitNumBatchAboveLastVerifiedBatch();
}
}
// Check final batch
if (finalNewBatch <= currentLastVerifiedBatch) {
revert FinalNumBatchBelowLastVerifiedBatch();
}
// Get snark bytes
bytes memory snarkHashBytes = getInputSnarkBytes(
initNumBatch,
finalNewBatch,
newLocalExitRoot,
oldStateRoot,
newStateRoot
);
// Calulate the snark input
uint256 inputSnark = uint256(sha256(snarkHashBytes)) % _RFIELD;
// Verify proof
if (!rollupVerifier.verifyProof(proof, [inputSnark])) {
revert InvalidProof();
}
// Get MATIC reward
matic.safeTransfer(
msg.sender,
calculateRewardPerBatch() *
(finalNewBatch - currentLastVerifiedBatch)
);
}
/**
* @notice Internal function to consolidate the state automatically once sequence or verify batches are called
* It tries to consolidate the first and the middle pending state in the queue
*/
function _tryConsolidatePendingState() internal {
// Check if there's any state to consolidate
if (lastPendingState > lastPendingStateConsolidated) {
// Check if it's possible to consolidate the next pending state
uint64 nextPendingState = lastPendingStateConsolidated + 1;
if (isPendingStateConsolidable(nextPendingState)) {
// Check middle pending state ( binary search of 1 step)
uint64 middlePendingState = nextPendingState +
(lastPendingState - nextPendingState) /
2;
// Try to consolidate it, and if not, consolidate the nextPendingState
if (isPendingStateConsolidable(middlePendingState)) {
_consolidatePendingState(middlePendingState);
} else {
_consolidatePendingState(nextPendingState);
}
}
}
}
/**
* @notice Allows to consolidate any pending state that has already exceed the pendingStateTimeout
* Can be called by the trusted aggregator, which can consolidate any state without the timeout restrictions
* @param pendingStateNum Pending state to consolidate
*/
function consolidatePendingState(uint64 pendingStateNum) external {
// Check if pending state can be consolidated
// If trusted aggregator is the sender, do not check the timeout or the emergency state
if (msg.sender != trustedAggregator) {
if (isEmergencyState) {
revert OnlyNotEmergencyState();
}
if (!isPendingStateConsolidable(pendingStateNum)) {
revert PendingStateNotConsolidable();
}
}
_consolidatePendingState(pendingStateNum);
}
/**
* @notice Internal function to consolidate any pending state that has already exceed the pendingStateTimeout
* @param pendingStateNum Pending state to consolidate
*/
function _consolidatePendingState(uint64 pendingStateNum) internal {
// Check if pendingStateNum is in correct range
// - not consolidated (implicity checks that is not 0)
// - exist ( has been added)
if (
pendingStateNum <= lastPendingStateConsolidated ||
pendingStateNum > lastPendingState
) {
revert PendingStateInvalid();
}
PendingState storage currentPendingState = pendingStateTransitions[
pendingStateNum
];
// Update state
uint64 newLastVerifiedBatch = currentPendingState.lastVerifiedBatch;
lastVerifiedBatch = newLastVerifiedBatch;
batchNumToStateRoot[newLastVerifiedBatch] = currentPendingState
.stateRoot;
// Update pending state
lastPendingStateConsolidated = pendingStateNum;
// Interact with globalExitRootManager
globalExitRootManager.updateExitRoot(currentPendingState.exitRoot);
emit ConsolidatePendingState(
newLastVerifiedBatch,
currentPendingState.stateRoot,
pendingStateNum
);
}
/**
* @notice Function to update the batch fee based on the new verfied batches
* The batch fee will not be updated when the trusted aggregator verify batches
* @param newLastVerifiedBatch New last verified batch
*/
function _updateBatchFee(uint64 newLastVerifiedBatch) internal {
uint64 currentLastVerifiedBatch = getLastVerifiedBatch();
uint64 currentBatch = newLastVerifiedBatch;
uint256 totalBatchesAboveTarget;
uint256 newBatchesVerified = newLastVerifiedBatch -
currentLastVerifiedBatch;
uint256 targetTimestamp = block.timestamp - verifyBatchTimeTarget;
while (currentBatch != currentLastVerifiedBatch) {
// Load sequenced batchdata
SequencedBatchData
storage currentSequencedBatchData = sequencedBatches[
currentBatch
];
// Check if timestamp is below the verifyBatchTimeTarget
if (
targetTimestamp < currentSequencedBatchData.sequencedTimestamp
) {
// update currentBatch
currentBatch = currentSequencedBatchData
.previousLastBatchSequenced;
} else {
// The rest of batches will be above
totalBatchesAboveTarget =
currentBatch -
currentLastVerifiedBatch;
break;
}
}
uint256 totalBatchesBelowTarget = newBatchesVerified -
totalBatchesAboveTarget;
// _MAX_BATCH_FEE --> (< 70 bits)
// multiplierBatchFee --> (< 10 bits)
// _MAX_BATCH_MULTIPLIER = 12
// multiplierBatchFee ** _MAX_BATCH_MULTIPLIER --> (< 128 bits)
// batchFee * (multiplierBatchFee ** _MAX_BATCH_MULTIPLIER)-->
// (< 70 bits) * (< 128 bits) = < 256 bits
// Since all the following operations cannot overflow, we can optimize this operations with unchecked
unchecked {
if (totalBatchesBelowTarget < totalBatchesAboveTarget) {
// There are more batches above target, fee is multiplied
uint256 diffBatches = totalBatchesAboveTarget -
totalBatchesBelowTarget;
diffBatches = diffBatches > _MAX_BATCH_MULTIPLIER
? _MAX_BATCH_MULTIPLIER
: diffBatches;
// For every multiplierBatchFee multiplication we must shift 3 zeroes since we have 3 decimals
batchFee =
(batchFee * (uint256(multiplierBatchFee) ** diffBatches)) /
(uint256(1000) ** diffBatches);
} else {
// There are more batches below target, fee is divided
uint256 diffBatches = totalBatchesBelowTarget -
totalBatchesAboveTarget;
diffBatches = diffBatches > _MAX_BATCH_MULTIPLIER
? _MAX_BATCH_MULTIPLIER
: diffBatches;
// For every multiplierBatchFee multiplication we must shift 3 zeroes since we have 3 decimals
uint256 accDivisor = (uint256(1 ether) *
(uint256(multiplierBatchFee) ** diffBatches)) /
(uint256(1000) ** diffBatches);
// multiplyFactor = multiplierBatchFee ** diffBatches / 10 ** (diffBatches * 3)
// accDivisor = 1E18 * multiplyFactor
// 1E18 * batchFee / accDivisor = batchFee / multiplyFactor
// < 60 bits * < 70 bits / ~60 bits --> overflow not possible
batchFee = (uint256(1 ether) * batchFee) / accDivisor;
}
}
// Batch fee must remain inside a range
if (batchFee > _MAX_BATCH_FEE) {
batchFee = _MAX_BATCH_FEE;
} else if (batchFee < _MIN_BATCH_FEE) {
batchFee = _MIN_BATCH_FEE;
}
}
////////////////////////////
// Force batches functions
////////////////////////////
/**
* @notice Allows a sequencer/user to force a batch of L2 transactions.
* This should be used only in extreme cases where the trusted sequencer does not work as expected
* Note The sequencer has certain degree of control on how non-forced and forced batches are ordered
* In order to assure that users force transactions will be processed properly, user must not sign any other transaction
* with the same nonce
* @param transactions L2 ethereum transactions EIP-155 or pre-EIP-155 with signature:
* @param maticAmount Max amount of MATIC tokens that the sender is willing to pay
*/
function forceBatch(
bytes calldata transactions,
uint256 maticAmount
) public virtual ifNotEmergencyState {
// Calculate matic collateral
uint256 maticFee = getCurrentBatchFee();
if (maticFee > maticAmount) {
revert NotEnoughMaticAmount();
}
if (transactions.length > _MAX_TRANSACTIONS_BYTE_LENGTH) {
revert TransactionsLengthAboveMax();
}
matic.safeTransferFrom(msg.sender, address(this), maticFee);
// Get globalExitRoot global exit root
bytes32 lastGlobalExitRoot = globalExitRootManager
.getLastGlobalExitRoot();
// Update forcedBatches mapping
lastForceBatch++;
forcedBatches[lastForceBatch] = keccak256(
abi.encodePacked(
keccak256(transactions),
lastGlobalExitRoot,
uint64(block.timestamp)
)
);
if (msg.sender == tx.origin) {
// Getting the calldata from an EOA is easy so no need to put the `transactions` in the event
emit ForceBatch(lastForceBatch, lastGlobalExitRoot, msg.sender, "");
} else {
// Getting internal transaction calldata is complicated (because it requires an archive node)
// Therefore it's worth it to put the `transactions` in the event, which is easy to query
emit ForceBatch(
lastForceBatch,
lastGlobalExitRoot,
msg.sender,
transactions
);
}
}
/**
* @notice Allows anyone to sequence forced Batches if the trusted sequencer has not done so in the timeout period
* @param batches Struct array which holds the necessary data to append force batches
*/
function sequenceForceBatches(
ForcedBatchData[] calldata batches
) external virtual ifNotEmergencyState {
uint256 batchesNum = batches.length;
if (batchesNum == 0) {
revert SequenceZeroBatches();
}
if (batchesNum > _MAX_VERIFY_BATCHES) {
revert ExceedMaxVerifyBatches();
}
if (
uint256(lastForceBatchSequenced) + batchesNum >
uint256(lastForceBatch)
) {
revert ForceBatchesOverflow();
}
// Store storage variables in memory, to save gas, because will be overrided multiple times
uint64 currentBatchSequenced = lastBatchSequenced;
uint64 currentLastForceBatchSequenced = lastForceBatchSequenced;
bytes32 currentAccInputHash = sequencedBatches[currentBatchSequenced]
.accInputHash;
// Sequence force batches
for (uint256 i = 0; i < batchesNum; i++) {
// Load current sequence
ForcedBatchData memory currentBatch = batches[i];
currentLastForceBatchSequenced++;
// Store the current transactions hash since it's used more than once for gas saving
bytes32 currentTransactionsHash = keccak256(
currentBatch.transactions
);
// Check forced data matches
bytes32 hashedForcedBatchData = keccak256(
abi.encodePacked(
currentTransactionsHash,
currentBatch.globalExitRoot,
currentBatch.minForcedTimestamp
)
);
if (
hashedForcedBatchData !=
forcedBatches[currentLastForceBatchSequenced]
) {
revert ForcedDataDoesNotMatch();
}
// Delete forceBatch data since won't be used anymore
delete forcedBatches[currentLastForceBatchSequenced];
if (i == (batchesNum - 1)) {
// The last batch will have the most restrictive timestamp
if (
currentBatch.minForcedTimestamp + _FORCE_BATCH_TIMEOUT >
block.timestamp
) {
revert ForceBatchTimeoutNotExpired();
}
}
// Calculate next acc input hash
currentAccInputHash = keccak256(
abi.encodePacked(
currentAccInputHash,
currentTransactionsHash,
currentBatch.globalExitRoot,
uint64(block.timestamp),
msg.sender
)
);
}
// Update currentBatchSequenced
currentBatchSequenced += uint64(batchesNum);
lastTimestamp = uint64(block.timestamp);
// Store back the storage variables
sequencedBatches[currentBatchSequenced] = SequencedBatchData({
accInputHash: currentAccInputHash,
sequencedTimestamp: uint64(block.timestamp),
previousLastBatchSequenced: lastBatchSequenced
});
lastBatchSequenced = currentBatchSequenced;
lastForceBatchSequenced = currentLastForceBatchSequenced;
emit SequenceForceBatches(currentBatchSequenced);
}
//////////////////
// admin functions
//////////////////
/**
* @notice Allow the admin to set a new trusted sequencer
* @param newTrustedSequencer Address of the new trusted sequencer
*/
function setTrustedSequencer(
address newTrustedSequencer
) external onlyAdmin {
trustedSequencer = newTrustedSequencer;
emit SetTrustedSequencer(newTrustedSequencer);
}
/**
* @notice Allow the admin to set the trusted sequencer URL
* @param newTrustedSequencerURL URL of trusted sequencer
*/
function setTrustedSequencerURL(
string memory newTrustedSequencerURL
) external onlyAdmin {
trustedSequencerURL = newTrustedSequencerURL;
emit SetTrustedSequencerURL(newTrustedSequencerURL);
}
/**
* @notice Allow the admin to set a new trusted aggregator address
* @param newTrustedAggregator Address of the new trusted aggregator
*/
function setTrustedAggregator(
address newTrustedAggregator
) external onlyAdmin {
trustedAggregator = newTrustedAggregator;
emit SetTrustedAggregator(newTrustedAggregator);
}
/**
* @notice Allow the admin to set a new pending state timeout
* The timeout can only be lowered, except if emergency state is active
* @param newTrustedAggregatorTimeout Trusted aggregator timeout
*/
function setTrustedAggregatorTimeout(
uint64 newTrustedAggregatorTimeout
) external onlyAdmin {
if (newTrustedAggregatorTimeout > _HALT_AGGREGATION_TIMEOUT) {
revert TrustedAggregatorTimeoutExceedHaltAggregationTimeout();
}
if (!isEmergencyState) {
if (newTrustedAggregatorTimeout >= trustedAggregatorTimeout) {
revert NewTrustedAggregatorTimeoutMustBeLower();
}
}
trustedAggregatorTimeout = newTrustedAggregatorTimeout;
emit SetTrustedAggregatorTimeout(newTrustedAggregatorTimeout);
}
/**
* @notice Allow the admin to set a new trusted aggregator timeout
* The timeout can only be lowered, except if emergency state is active
* @param newPendingStateTimeout Trusted aggregator timeout
*/
function setPendingStateTimeout(
uint64 newPendingStateTimeout
) external onlyAdmin {
if (newPendingStateTimeout > _HALT_AGGREGATION_TIMEOUT) {
revert PendingStateTimeoutExceedHaltAggregationTimeout();
}
if (!isEmergencyState) {
if (newPendingStateTimeout >= pendingStateTimeout) {
revert NewPendingStateTimeoutMustBeLower();
}
}
pendingStateTimeout = newPendingStateTimeout;
emit SetPendingStateTimeout(newPendingStateTimeout);
}
/**
* @notice Allow the admin to set a new multiplier batch fee
* @param newMultiplierBatchFee multiplier batch fee
*/
function setMultiplierBatchFee(
uint16 newMultiplierBatchFee
) external onlyAdmin {
if (newMultiplierBatchFee < 1000 || newMultiplierBatchFee > 1023) {
revert InvalidRangeMultiplierBatchFee();
}
multiplierBatchFee = newMultiplierBatchFee;
emit SetMultiplierBatchFee(newMultiplierBatchFee);
}
/**
* @notice Allow the admin to set a new verify batch time target
* This value will only be relevant once the aggregation is decentralized, so
* the trustedAggregatorTimeout should be zero or very close to zero
* @param newVerifyBatchTimeTarget Verify batch time target
*/
function setVerifyBatchTimeTarget(
uint64 newVerifyBatchTimeTarget
) external onlyAdmin {
if (newVerifyBatchTimeTarget > 1 days) {
revert InvalidRangeBatchTimeTarget();
}
verifyBatchTimeTarget = newVerifyBatchTimeTarget;
emit SetVerifyBatchTimeTarget(newVerifyBatchTimeTarget);
}
/**
* @notice Starts the admin role transfer
* This is a two step process, the pending admin must accepted to finalize the process
* @param newPendingAdmin Address of the new pending admin
*/
function transferAdminRole(address newPendingAdmin) external onlyAdmin {
pendingAdmin = newPendingAdmin;
emit TransferAdminRole(newPendingAdmin);
}
/**
* @notice Allow the current pending admin to accept the admin role
*/
function acceptAdminRole() external {
if (pendingAdmin != msg.sender) {
revert OnlyPendingAdmin();
}
admin = pendingAdmin;
emit AcceptAdminRole(pendingAdmin);
}
/////////////////////////////////
// Soundness protection functions
/////////////////////////////////
/**
* @notice Allows the trusted aggregator to override the pending state
* if its possible to prove a different state root given the same batches
* @param initPendingStateNum Init pending state, 0 if consolidated state is used
* @param finalPendingStateNum Final pending state, that will be used to compare with the newStateRoot
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function overridePendingState(
uint64 initPendingStateNum,
uint64 finalPendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) external onlyTrustedAggregator {
_proveDistinctPendingState(
initPendingStateNum,
finalPendingStateNum,
initNumBatch,
finalNewBatch,
newLocalExitRoot,
newStateRoot,
proof
);
// Consolidate state state
lastVerifiedBatch = finalNewBatch;
batchNumToStateRoot[finalNewBatch] = newStateRoot;
// Clean pending state if any
if (lastPendingState > 0) {
lastPendingState = 0;
lastPendingStateConsolidated = 0;
}
// Interact with globalExitRootManager
globalExitRootManager.updateExitRoot(newLocalExitRoot);
// Update trusted aggregator timeout to max
trustedAggregatorTimeout = _HALT_AGGREGATION_TIMEOUT;
emit OverridePendingState(finalNewBatch, newStateRoot, msg.sender);
}
/**
* @notice Allows to halt the PolygonZkEVM if its possible to prove a different state root given the same batches
* @param initPendingStateNum Init pending state, 0 if consolidated state is used
* @param finalPendingStateNum Final pending state, that will be used to compare with the newStateRoot
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function proveNonDeterministicPendingState(
uint64 initPendingStateNum,
uint64 finalPendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) external ifNotEmergencyState {
_proveDistinctPendingState(
initPendingStateNum,
finalPendingStateNum,
initNumBatch,
finalNewBatch,
newLocalExitRoot,
newStateRoot,
proof
);
emit ProveNonDeterministicPendingState(
batchNumToStateRoot[finalNewBatch],
newStateRoot
);
// Activate emergency state
_activateEmergencyState();
}
/**
* @notice Internal function that prove a different state root given the same batches to verify
* @param initPendingStateNum Init pending state, 0 if consolidated state is used
* @param finalPendingStateNum Final pending state, that will be used to compare with the newStateRoot
* @param initNumBatch Batch which the aggregator starts the verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param newStateRoot New State root once the batch is processed
* @param proof fflonk proof
*/
function _proveDistinctPendingState(
uint64 initPendingStateNum,
uint64 finalPendingStateNum,
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 newStateRoot,
bytes calldata proof
) internal view {
bytes32 oldStateRoot;
// Use pending state if specified, otherwise use consolidated state
if (initPendingStateNum != 0) {
// Check that pending state exist
// Already consolidated pending states can be used aswell
if (initPendingStateNum > lastPendingState) {
revert PendingStateDoesNotExist();
}
// Check choosen pending state
PendingState storage initPendingState = pendingStateTransitions[
initPendingStateNum
];
// Get oldStateRoot from init pending state
oldStateRoot = initPendingState.stateRoot;
// Check initNumBatch matches the init pending state
if (initNumBatch != initPendingState.lastVerifiedBatch) {
revert InitNumBatchDoesNotMatchPendingState();
}
} else {
// Use consolidated state
oldStateRoot = batchNumToStateRoot[initNumBatch];
if (oldStateRoot == bytes32(0)) {
revert OldStateRootDoesNotExist();
}
// Check initNumBatch is inside the range, sanity check
if (initNumBatch > lastVerifiedBatch) {
revert InitNumBatchAboveLastVerifiedBatch();
}
}
// Assert final pending state num is in correct range
// - exist ( has been added)
// - bigger than the initPendingstate
// - not consolidated
if (
finalPendingStateNum > lastPendingState ||
finalPendingStateNum <= initPendingStateNum ||
finalPendingStateNum <= lastPendingStateConsolidated
) {
revert FinalPendingStateNumInvalid();
}
// Check final num batch
if (
finalNewBatch !=
pendingStateTransitions[finalPendingStateNum].lastVerifiedBatch
) {
revert FinalNumBatchDoesNotMatchPendingState();
}
// Get snark bytes
bytes memory snarkHashBytes = getInputSnarkBytes(
initNumBatch,
finalNewBatch,
newLocalExitRoot,
oldStateRoot,
newStateRoot
);
// Calulate the snark input
uint256 inputSnark = uint256(sha256(snarkHashBytes)) % _RFIELD;
// Verify proof
if (!rollupVerifier.verifyProof(proof, [inputSnark])) {
revert InvalidProof();
}
if (
pendingStateTransitions[finalPendingStateNum].stateRoot ==
newStateRoot
) {
revert StoredRootMustBeDifferentThanNewRoot();
}
}
/**
* @notice Function to activate emergency state, which also enable the emergency mode on both PolygonZkEVM and PolygonZkEVMBridge contracts
* If not called by the owner must be provided a batcnNum that does not have been aggregated in a _HALT_AGGREGATION_TIMEOUT period
* @param sequencedBatchNum Sequenced batch number that has not been aggreagated in _HALT_AGGREGATION_TIMEOUT
*/
function activateEmergencyState(uint64 sequencedBatchNum) external {
if (msg.sender != owner()) {
// Only check conditions if is not called by the owner
uint64 currentLastVerifiedBatch = getLastVerifiedBatch();
// Check that the batch has not been verified
if (sequencedBatchNum <= currentLastVerifiedBatch) {
revert BatchAlreadyVerified();
}
// Check that the batch has been sequenced and this was the end of a sequence
if (
sequencedBatchNum > lastBatchSequenced ||
sequencedBatches[sequencedBatchNum].sequencedTimestamp == 0
) {
revert BatchNotSequencedOrNotSequenceEnd();
}
// Check that has been passed _HALT_AGGREGATION_TIMEOUT since it was sequenced
if (
sequencedBatches[sequencedBatchNum].sequencedTimestamp +
_HALT_AGGREGATION_TIMEOUT >
block.timestamp
) {
revert HaltTimeoutNotExpired();
}
}
_activateEmergencyState();
}
/**
* @notice Function to deactivate emergency state on both PolygonZkEVM and PolygonZkEVMBridge contracts
*/
function deactivateEmergencyState() external onlyAdmin {
// Deactivate emergency state on PolygonZkEVMBridge
bridgeAddress.deactivateEmergencyState();
// Deactivate emergency state on this contract
super._deactivateEmergencyState();
}
/**
* @notice Internal function to activate emergency state on both PolygonZkEVM and PolygonZkEVMBridge contracts
*/
function _activateEmergencyState() internal override {
// Activate emergency state on PolygonZkEVM Bridge
bridgeAddress.activateEmergencyState();
// Activate emergency state on this contract
super._activateEmergencyState();
}
////////////////////////
// public/view functions
////////////////////////
/**
* @notice Function to get the batch fee
*/
function getCurrentBatchFee() public view returns (uint256) {
return batchFee;
}
/**
* @notice Get the last verified batch
*/
function getLastVerifiedBatch() public view returns (uint64) {
if (lastPendingState > 0) {
return pendingStateTransitions[lastPendingState].lastVerifiedBatch;
} else {
return lastVerifiedBatch;
}
}
/**
* @notice Returns a boolean that indicates if the pendingStateNum is or not consolidable
* Note that his function do not check if the pending state currently exist, or if it's consolidated already
*/
function isPendingStateConsolidable(
uint64 pendingStateNum
) public view returns (bool) {
return (pendingStateTransitions[pendingStateNum].timestamp +
pendingStateTimeout <=
block.timestamp);
}
/**
* @notice Function to calculate the reward to verify a single batch
*/
function calculateRewardPerBatch() public view returns (uint256) {
uint256 currentBalance = matic.balanceOf(address(this));
// Total Sequenced Batches = forcedBatches to be sequenced (total forced Batches - sequenced Batches) + sequencedBatches
// Total Batches to be verified = Total Sequenced Batches - verified Batches
uint256 totalBatchesToVerify = ((lastForceBatch -
lastForceBatchSequenced) + lastBatchSequenced) -
getLastVerifiedBatch();
if (totalBatchesToVerify == 0) return 0;
return currentBalance / totalBatchesToVerify;
}
/**
* @notice Function to calculate the input snark bytes
* @param initNumBatch Batch which the aggregator starts teh verification
* @param finalNewBatch Last batch aggregator intends to verify
* @param newLocalExitRoot New local exit root once the batch is processed
* @param oldStateRoot State root before batch is processed
* @param newStateRoot New State root once the batch is processed
*/
function getInputSnarkBytes(
uint64 initNumBatch,
uint64 finalNewBatch,
bytes32 newLocalExitRoot,
bytes32 oldStateRoot,
bytes32 newStateRoot
) public view returns (bytes memory) {
// sanity checks
bytes32 oldAccInputHash = sequencedBatches[initNumBatch].accInputHash;
bytes32 newAccInputHash = sequencedBatches[finalNewBatch].accInputHash;
if (initNumBatch != 0 && oldAccInputHash == bytes32(0)) {
revert OldAccInputHashDoesNotExist();
}
if (newAccInputHash == bytes32(0)) {
revert NewAccInputHashDoesNotExist();
}
return
abi.encodePacked(
msg.sender,
oldStateRoot,
oldAccInputHash,
initNumBatch,
chainID,
forkID,
newStateRoot,
newAccInputHash,
newLocalExitRoot,
finalNewBatch
);
}
}
// File: @openzeppelin/contracts/utils/Address.sol
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResultFromTarget(target, success, returndata, errorMessage);
}
/**
* @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
* the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
*
* _Available since v4.8._
*/
function verifyCallResultFromTarget(
address target,
bool success,
bytes memory returndata,
string memory errorMessage
) internal view returns (bytes memory) {
if (success) {
if (returndata.length == 0) {
// only check isContract if the call was successful and the return data is empty
// otherwise we already know that it was a contract
require(isContract(target), "Address: call to non-contract");
}
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
/**
* @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason or using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
_revert(returndata, errorMessage);
}
}
function _revert(bytes memory returndata, string memory errorMessage) private pure {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
/// @solidity memory-safe-assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
// File: @openzeppelin/contracts/token/ERC721/IERC721Receiver.sol
// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721Receiver.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/utils/introspection/IERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[EIP].
*
* Implementers can declare support of contract interfaces, which can then be
* queried by others ({ERC165Checker}).
*
* For an implementation, see {ERC165}.
*/
interface IERC165 {
/**
* @dev Returns true if this contract implements the interface defined by
* `interfaceId`. See the corresponding
* https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
* to learn more about how these ids are created.
*
* This function call must use less than 30 000 gas.
*/
function supportsInterface(bytes4 interfaceId) external view returns (bool);
}
// File: @openzeppelin/contracts/token/ERC1155/IERC1155Receiver.sol
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// File: @openzeppelin/contracts/utils/introspection/ERC165.sol
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC165} interface.
*
* Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
* for the additional interface id that will be supported. For example:
*
* ```solidity
* function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
* return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
* }
* ```
*
* Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
*/
abstract contract ERC165 is IERC165 {
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC165).interfaceId;
}
}
// File: @openzeppelin/contracts/utils/math/Math.sol
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/Math.sol)
pragma solidity ^0.8.0;
/**
* @dev Standard math utilities missing in the Solidity language.
*/
library Math {
enum Rounding {
Down, // Toward negative infinity
Up, // Toward infinity
Zero // Toward zero
}
/**
* @dev Returns the largest of two numbers.
*/
function max(uint256 a, uint256 b) internal pure returns (uint256) {
return a > b ? a : b;
}
/**
* @dev Returns the smallest of two numbers.
*/
function min(uint256 a, uint256 b) internal pure returns (uint256) {
return a < b ? a : b;
}
/**
* @dev Returns the average of two numbers. The result is rounded towards
* zero.
*/
function average(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b) / 2 can overflow.
return (a & b) + (a ^ b) / 2;
}
/**
* @dev Returns the ceiling of the division of two numbers.
*
* This differs from standard division with `/` in that it rounds up instead
* of rounding down.
*/
function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
// (a + b - 1) / b can overflow on addition, so we distribute.
return a == 0 ? 0 : (a - 1) / b + 1;
}
/**
* @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
* @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
* with further edits by Uniswap Labs also under MIT license.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator
) internal pure returns (uint256 result) {
unchecked {
// 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
// use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
// variables such that product = prod1 * 2^256 + prod0.
uint256 prod0; // Least significant 256 bits of the product
uint256 prod1; // Most significant 256 bits of the product
assembly {
let mm := mulmod(x, y, not(0))
prod0 := mul(x, y)
prod1 := sub(sub(mm, prod0), lt(mm, prod0))
}
// Handle non-overflow cases, 256 by 256 division.
if (prod1 == 0) {
return prod0 / denominator;
}
// Make sure the result is less than 2^256. Also prevents denominator == 0.
require(denominator > prod1);
///////////////////////////////////////////////
// 512 by 256 division.
///////////////////////////////////////////////
// Make division exact by subtracting the remainder from [prod1 prod0].
uint256 remainder;
assembly {
// Compute remainder using mulmod.
remainder := mulmod(x, y, denominator)
// Subtract 256 bit number from 512 bit number.
prod1 := sub(prod1, gt(remainder, prod0))
prod0 := sub(prod0, remainder)
}
// Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
// See https://cs.stackexchange.com/q/138556/92363.
// Does not overflow because the denominator cannot be zero at this stage in the function.
uint256 twos = denominator & (~denominator + 1);
assembly {
// Divide denominator by twos.
denominator := div(denominator, twos)
// Divide [prod1 prod0] by twos.
prod0 := div(prod0, twos)
// Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
twos := add(div(sub(0, twos), twos), 1)
}
// Shift in bits from prod1 into prod0.
prod0 |= prod1 * twos;
// Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
// that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
// four bits. That is, denominator * inv = 1 mod 2^4.
uint256 inverse = (3 * denominator) ^ 2;
// Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
// in modular arithmetic, doubling the correct bits in each step.
inverse *= 2 - denominator * inverse; // inverse mod 2^8
inverse *= 2 - denominator * inverse; // inverse mod 2^16
inverse *= 2 - denominator * inverse; // inverse mod 2^32
inverse *= 2 - denominator * inverse; // inverse mod 2^64
inverse *= 2 - denominator * inverse; // inverse mod 2^128
inverse *= 2 - denominator * inverse; // inverse mod 2^256
// Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
// This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
// less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
// is no longer required.
result = prod0 * inverse;
return result;
}
}
/**
* @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
*/
function mulDiv(
uint256 x,
uint256 y,
uint256 denominator,
Rounding rounding
) internal pure returns (uint256) {
uint256 result = mulDiv(x, y, denominator);
if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
result += 1;
}
return result;
}
/**
* @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
*
* Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
*/
function sqrt(uint256 a) internal pure returns (uint256) {
if (a == 0) {
return 0;
}
// For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
//
// We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
// `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
//
// This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
// → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
// → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
//
// Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
uint256 result = 1 << (log2(a) >> 1);
// At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
// since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
// every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
// into the expected uint128 result.
unchecked {
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
result = (result + a / result) >> 1;
return min(result, a / result);
}
}
/**
* @notice Calculates sqrt(a), following the selected rounding direction.
*/
function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = sqrt(a);
return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
}
}
/**
* @dev Return the log in base 2, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 128;
}
if (value >> 64 > 0) {
value >>= 64;
result += 64;
}
if (value >> 32 > 0) {
value >>= 32;
result += 32;
}
if (value >> 16 > 0) {
value >>= 16;
result += 16;
}
if (value >> 8 > 0) {
value >>= 8;
result += 8;
}
if (value >> 4 > 0) {
value >>= 4;
result += 4;
}
if (value >> 2 > 0) {
value >>= 2;
result += 2;
}
if (value >> 1 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 2, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log2(value);
return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 10, rounded down, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >= 10**64) {
value /= 10**64;
result += 64;
}
if (value >= 10**32) {
value /= 10**32;
result += 32;
}
if (value >= 10**16) {
value /= 10**16;
result += 16;
}
if (value >= 10**8) {
value /= 10**8;
result += 8;
}
if (value >= 10**4) {
value /= 10**4;
result += 4;
}
if (value >= 10**2) {
value /= 10**2;
result += 2;
}
if (value >= 10**1) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log10(value);
return result + (rounding == Rounding.Up && 10**result < value ? 1 : 0);
}
}
/**
* @dev Return the log in base 256, rounded down, of a positive value.
* Returns 0 if given 0.
*
* Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
*/
function log256(uint256 value) internal pure returns (uint256) {
uint256 result = 0;
unchecked {
if (value >> 128 > 0) {
value >>= 128;
result += 16;
}
if (value >> 64 > 0) {
value >>= 64;
result += 8;
}
if (value >> 32 > 0) {
value >>= 32;
result += 4;
}
if (value >> 16 > 0) {
value >>= 16;
result += 2;
}
if (value >> 8 > 0) {
result += 1;
}
}
return result;
}
/**
* @dev Return the log in base 10, following the selected rounding direction, of a positive value.
* Returns 0 if given 0.
*/
function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
unchecked {
uint256 result = log256(value);
return result + (rounding == Rounding.Up && 1 << (result * 8) < value ? 1 : 0);
}
}
}
// File: @openzeppelin/contracts/utils/Strings.sol
// OpenZeppelin Contracts (last updated v4.8.0) (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _SYMBOLS = "0123456789abcdef";
uint8 private constant _ADDRESS_LENGTH = 20;
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
unchecked {
uint256 length = Math.log10(value) + 1;
string memory buffer = new string(length);
uint256 ptr;
/// @solidity memory-safe-assembly
assembly {
ptr := add(buffer, add(32, length))
}
while (true) {
ptr--;
/// @solidity memory-safe-assembly
assembly {
mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
}
value /= 10;
if (value == 0) break;
}
return buffer;
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
unchecked {
return toHexString(value, Math.log256(value) + 1);
}
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
*/
function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
bytes memory buffer = new bytes(2 * length + 2);
buffer[0] = "0";
buffer[1] = "x";
for (uint256 i = 2 * length + 1; i > 1; --i) {
buffer[i] = _SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
/**
* @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
*/
function toHexString(address addr) internal pure returns (string memory) {
return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
}
}
// File: @openzeppelin/contracts/utils/Context.sol
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)
pragma solidity ^0.8.0;
/**
* @dev Provides information about the current execution context, including the
* sender of the transaction and its data. While these are generally available
* via msg.sender and msg.data, they should not be accessed in such a direct
* manner, since when dealing with meta-transactions the account sending and
* paying for execution may not be the actual sender (as far as an application
* is concerned).
*
* This contract is only required for intermediate, library-like contracts.
*/
abstract contract Context {
function _msgSender() internal view virtual returns (address) {
return msg.sender;
}
function _msgData() internal view virtual returns (bytes calldata) {
return msg.data;
}
}
// File: @openzeppelin/contracts/access/IAccessControl.sol
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev External interface of AccessControl declared to support ERC165 detection.
*/
interface IAccessControl {
/**
* @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
*
* `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
* {RoleAdminChanged} not being emitted signaling this.
*
* _Available since v3.1._
*/
event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);
/**
* @dev Emitted when `account` is granted `role`.
*
* `sender` is the account that originated the contract call, an admin role
* bearer except when using {AccessControl-_setupRole}.
*/
event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Emitted when `account` is revoked `role`.
*
* `sender` is the account that originated the contract call:
* - if using `revokeRole`, it is the admin role bearer
* - if using `renounceRole`, it is the role bearer (i.e. `account`)
*/
event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) external view returns (bool);
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {AccessControl-_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) external view returns (bytes32);
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function grantRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*/
function revokeRole(bytes32 role, address account) external;
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been granted `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*/
function renounceRole(bytes32 role, address account) external;
}
// File: @openzeppelin/contracts/access/AccessControl.sol
// OpenZeppelin Contracts (last updated v4.8.0) (access/AccessControl.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module that allows children to implement role-based access
* control mechanisms. This is a lightweight version that doesn't allow enumerating role
* members except through off-chain means by accessing the contract event logs. Some
* applications may benefit from on-chain enumerability, for those cases see
* {AccessControlEnumerable}.
*
* Roles are referred to by their `bytes32` identifier. These should be exposed
* in the external API and be unique. The best way to achieve this is by
* using `public constant` hash digests:
*
* ```
* bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
* ```
*
* Roles can be used to represent a set of permissions. To restrict access to a
* function call, use {hasRole}:
*
* ```
* function foo() public {
* require(hasRole(MY_ROLE, msg.sender));
* ...
* }
* ```
*
* Roles can be granted and revoked dynamically via the {grantRole} and
* {revokeRole} functions. Each role has an associated admin role, and only
* accounts that have a role's admin role can call {grantRole} and {revokeRole}.
*
* By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
* that only accounts with this role will be able to grant or revoke other
* roles. More complex role relationships can be created by using
* {_setRoleAdmin}.
*
* WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
* grant and revoke this role. Extra precautions should be taken to secure
* accounts that have been granted it.
*/
abstract contract AccessControl is Context, IAccessControl, ERC165 {
struct RoleData {
mapping(address => bool) members;
bytes32 adminRole;
}
mapping(bytes32 => RoleData) private _roles;
bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;
/**
* @dev Modifier that checks that an account has a specific role. Reverts
* with a standardized message including the required role.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*
* _Available since v4.1._
*/
modifier onlyRole(bytes32 role) {
_checkRole(role);
_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns `true` if `account` has been granted `role`.
*/
function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
return _roles[role].members[account];
}
/**
* @dev Revert with a standard message if `_msgSender()` is missing `role`.
* Overriding this function changes the behavior of the {onlyRole} modifier.
*
* Format of the revert message is described in {_checkRole}.
*
* _Available since v4.6._
*/
function _checkRole(bytes32 role) internal view virtual {
_checkRole(role, _msgSender());
}
/**
* @dev Revert with a standard message if `account` is missing `role`.
*
* The format of the revert reason is given by the following regular expression:
*
* /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
*/
function _checkRole(bytes32 role, address account) internal view virtual {
if (!hasRole(role, account)) {
revert(
string(
abi.encodePacked(
"AccessControl: account ",
Strings.toHexString(account),
" is missing role ",
Strings.toHexString(uint256(role), 32)
)
)
);
}
}
/**
* @dev Returns the admin role that controls `role`. See {grantRole} and
* {revokeRole}.
*
* To change a role's admin, use {_setRoleAdmin}.
*/
function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
return _roles[role].adminRole;
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleGranted} event.
*/
function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_grantRole(role, account);
}
/**
* @dev Revokes `role` from `account`.
*
* If `account` had been granted `role`, emits a {RoleRevoked} event.
*
* Requirements:
*
* - the caller must have ``role``'s admin role.
*
* May emit a {RoleRevoked} event.
*/
function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
_revokeRole(role, account);
}
/**
* @dev Revokes `role` from the calling account.
*
* Roles are often managed via {grantRole} and {revokeRole}: this function's
* purpose is to provide a mechanism for accounts to lose their privileges
* if they are compromised (such as when a trusted device is misplaced).
*
* If the calling account had been revoked `role`, emits a {RoleRevoked}
* event.
*
* Requirements:
*
* - the caller must be `account`.
*
* May emit a {RoleRevoked} event.
*/
function renounceRole(bytes32 role, address account) public virtual override {
require(account == _msgSender(), "AccessControl: can only renounce roles for self");
_revokeRole(role, account);
}
/**
* @dev Grants `role` to `account`.
*
* If `account` had not been already granted `role`, emits a {RoleGranted}
* event. Note that unlike {grantRole}, this function doesn't perform any
* checks on the calling account.
*
* May emit a {RoleGranted} event.
*
* [WARNING]
* ====
* This function should only be called from the constructor when setting
* up the initial roles for the system.
*
* Using this function in any other way is effectively circumventing the admin
* system imposed by {AccessControl}.
* ====
*
* NOTE: This function is deprecated in favor of {_grantRole}.
*/
function _setupRole(bytes32 role, address account) internal virtual {
_grantRole(role, account);
}
/**
* @dev Sets `adminRole` as ``role``'s admin role.
*
* Emits a {RoleAdminChanged} event.
*/
function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
bytes32 previousAdminRole = getRoleAdmin(role);
_roles[role].adminRole = adminRole;
emit RoleAdminChanged(role, previousAdminRole, adminRole);
}
/**
* @dev Grants `role` to `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleGranted} event.
*/
function _grantRole(bytes32 role, address account) internal virtual {
if (!hasRole(role, account)) {
_roles[role].members[account] = true;
emit RoleGranted(role, account, _msgSender());
}
}
/**
* @dev Revokes `role` from `account`.
*
* Internal function without access restriction.
*
* May emit a {RoleRevoked} event.
*/
function _revokeRole(bytes32 role, address account) internal virtual {
if (hasRole(role, account)) {
_roles[role].members[account] = false;
emit RoleRevoked(role, account, _msgSender());
}
}
}
// File: @openzeppelin/contracts/governance/TimelockController.sol
// OpenZeppelin Contracts (last updated v4.8.2) (governance/TimelockController.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which acts as a timelocked controller. When set as the
* owner of an `Ownable` smart contract, it enforces a timelock on all
* `onlyOwner` maintenance operations. This gives time for users of the
* controlled contract to exit before a potentially dangerous maintenance
* operation is applied.
*
* By default, this contract is self administered, meaning administration tasks
* have to go through the timelock process. The proposer (resp executor) role
* is in charge of proposing (resp executing) operations. A common use case is
* to position this {TimelockController} as the owner of a smart contract, with
* a multisig or a DAO as the sole proposer.
*
* _Available since v3.3._
*/
contract TimelockController is AccessControl, IERC721Receiver, IERC1155Receiver {
bytes32 public constant TIMELOCK_ADMIN_ROLE = keccak256("TIMELOCK_ADMIN_ROLE");
bytes32 public constant PROPOSER_ROLE = keccak256("PROPOSER_ROLE");
bytes32 public constant EXECUTOR_ROLE = keccak256("EXECUTOR_ROLE");
bytes32 public constant CANCELLER_ROLE = keccak256("CANCELLER_ROLE");
uint256 internal constant _DONE_TIMESTAMP = uint256(1);
mapping(bytes32 => uint256) private _timestamps;
uint256 private _minDelay;
/**
* @dev Emitted when a call is scheduled as part of operation `id`.
*/
event CallScheduled(
bytes32 indexed id,
uint256 indexed index,
address target,
uint256 value,
bytes data,
bytes32 predecessor,
uint256 delay
);
/**
* @dev Emitted when a call is performed as part of operation `id`.
*/
event CallExecuted(bytes32 indexed id, uint256 indexed index, address target, uint256 value, bytes data);
/**
* @dev Emitted when operation `id` is cancelled.
*/
event Cancelled(bytes32 indexed id);
/**
* @dev Emitted when the minimum delay for future operations is modified.
*/
event MinDelayChange(uint256 oldDuration, uint256 newDuration);
/**
* @dev Initializes the contract with the following parameters:
*
* - `minDelay`: initial minimum delay for operations
* - `proposers`: accounts to be granted proposer and canceller roles
* - `executors`: accounts to be granted executor role
* - `admin`: optional account to be granted admin role; disable with zero address
*
* IMPORTANT: The optional admin can aid with initial configuration of roles after deployment
* without being subject to delay, but this role should be subsequently renounced in favor of
* administration through timelocked proposals. Previous versions of this contract would assign
* this admin to the deployer automatically and should be renounced as well.
*/
constructor(
uint256 minDelay,
address[] memory proposers,
address[] memory executors,
address admin
) {
_setRoleAdmin(TIMELOCK_ADMIN_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(PROPOSER_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(EXECUTOR_ROLE, TIMELOCK_ADMIN_ROLE);
_setRoleAdmin(CANCELLER_ROLE, TIMELOCK_ADMIN_ROLE);
// self administration
_setupRole(TIMELOCK_ADMIN_ROLE, address(this));
// optional admin
if (admin != address(0)) {
_setupRole(TIMELOCK_ADMIN_ROLE, admin);
}
// register proposers and cancellers
for (uint256 i = 0; i < proposers.length; ++i) {
_setupRole(PROPOSER_ROLE, proposers[i]);
_setupRole(CANCELLER_ROLE, proposers[i]);
}
// register executors
for (uint256 i = 0; i < executors.length; ++i) {
_setupRole(EXECUTOR_ROLE, executors[i]);
}
_minDelay = minDelay;
emit MinDelayChange(0, minDelay);
}
/**
* @dev Modifier to make a function callable only by a certain role. In
* addition to checking the sender's role, `address(0)` 's role is also
* considered. Granting a role to `address(0)` is equivalent to enabling
* this role for everyone.
*/
modifier onlyRoleOrOpenRole(bytes32 role) {
if (!hasRole(role, address(0))) {
_checkRole(role, _msgSender());
}
_;
}
/**
* @dev Contract might receive/hold ETH as part of the maintenance process.
*/
receive() external payable {}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(IERC165, AccessControl) returns (bool) {
return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
}
/**
* @dev Returns whether an id correspond to a registered operation. This
* includes both Pending, Ready and Done operations.
*/
function isOperation(bytes32 id) public view virtual returns (bool registered) {
return getTimestamp(id) > 0;
}
/**
* @dev Returns whether an operation is pending or not.
*/
function isOperationPending(bytes32 id) public view virtual returns (bool pending) {
return getTimestamp(id) > _DONE_TIMESTAMP;
}
/**
* @dev Returns whether an operation is ready or not.
*/
function isOperationReady(bytes32 id) public view virtual returns (bool ready) {
uint256 timestamp = getTimestamp(id);
return timestamp > _DONE_TIMESTAMP && timestamp <= block.timestamp;
}
/**
* @dev Returns whether an operation is done or not.
*/
function isOperationDone(bytes32 id) public view virtual returns (bool done) {
return getTimestamp(id) == _DONE_TIMESTAMP;
}
/**
* @dev Returns the timestamp at with an operation becomes ready (0 for
* unset operations, 1 for done operations).
*/
function getTimestamp(bytes32 id) public view virtual returns (uint256 timestamp) {
return _timestamps[id];
}
/**
* @dev Returns the minimum delay for an operation to become valid.
*
* This value can be changed by executing an operation that calls `updateDelay`.
*/
function getMinDelay() public view virtual returns (uint256 duration) {
return _minDelay;
}
/**
* @dev Returns the identifier of an operation containing a single
* transaction.
*/
function hashOperation(
address target,
uint256 value,
bytes calldata data,
bytes32 predecessor,
bytes32 salt
) public pure virtual returns (bytes32 hash) {
return keccak256(abi.encode(target, value, data, predecessor, salt));
}
/**
* @dev Returns the identifier of an operation containing a batch of
* transactions.
*/
function hashOperationBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt
) public pure virtual returns (bytes32 hash) {
return keccak256(abi.encode(targets, values, payloads, predecessor, salt));
}
/**
* @dev Schedule an operation containing a single transaction.
*
* Emits a {CallScheduled} event.
*
* Requirements:
*
* - the caller must have the 'proposer' role.
*/
function schedule(
address target,
uint256 value,
bytes calldata data,
bytes32 predecessor,
bytes32 salt,
uint256 delay
) public virtual onlyRole(PROPOSER_ROLE) {
bytes32 id = hashOperation(target, value, data, predecessor, salt);
_schedule(id, delay);
emit CallScheduled(id, 0, target, value, data, predecessor, delay);
}
/**
* @dev Schedule an operation containing a batch of transactions.
*
* Emits one {CallScheduled} event per transaction in the batch.
*
* Requirements:
*
* - the caller must have the 'proposer' role.
*/
function scheduleBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt,
uint256 delay
) public virtual onlyRole(PROPOSER_ROLE) {
require(targets.length == values.length, "TimelockController: length mismatch");
require(targets.length == payloads.length, "TimelockController: length mismatch");
bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);
_schedule(id, delay);
for (uint256 i = 0; i < targets.length; ++i) {
emit CallScheduled(id, i, targets[i], values[i], payloads[i], predecessor, delay);
}
}
/**
* @dev Schedule an operation that is to becomes valid after a given delay.
*/
function _schedule(bytes32 id, uint256 delay) private {
require(!isOperation(id), "TimelockController: operation already scheduled");
require(delay >= getMinDelay(), "TimelockController: insufficient delay");
_timestamps[id] = block.timestamp + delay;
}
/**
* @dev Cancel an operation.
*
* Requirements:
*
* - the caller must have the 'canceller' role.
*/
function cancel(bytes32 id) public virtual onlyRole(CANCELLER_ROLE) {
require(isOperationPending(id), "TimelockController: operation cannot be cancelled");
delete _timestamps[id];
emit Cancelled(id);
}
/**
* @dev Execute an (ready) operation containing a single transaction.
*
* Emits a {CallExecuted} event.
*
* Requirements:
*
* - the caller must have the 'executor' role.
*/
// This function can reenter, but it doesn't pose a risk because _afterCall checks that the proposal is pending,
// thus any modifications to the operation during reentrancy should be caught.
// slither-disable-next-line reentrancy-eth
function execute(
address target,
uint256 value,
bytes calldata payload,
bytes32 predecessor,
bytes32 salt
) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
bytes32 id = hashOperation(target, value, payload, predecessor, salt);
_beforeCall(id, predecessor);
_execute(target, value, payload);
emit CallExecuted(id, 0, target, value, payload);
_afterCall(id);
}
/**
* @dev Execute an (ready) operation containing a batch of transactions.
*
* Emits one {CallExecuted} event per transaction in the batch.
*
* Requirements:
*
* - the caller must have the 'executor' role.
*/
// This function can reenter, but it doesn't pose a risk because _afterCall checks that the proposal is pending,
// thus any modifications to the operation during reentrancy should be caught.
// slither-disable-next-line reentrancy-eth
function executeBatch(
address[] calldata targets,
uint256[] calldata values,
bytes[] calldata payloads,
bytes32 predecessor,
bytes32 salt
) public payable virtual onlyRoleOrOpenRole(EXECUTOR_ROLE) {
require(targets.length == values.length, "TimelockController: length mismatch");
require(targets.length == payloads.length, "TimelockController: length mismatch");
bytes32 id = hashOperationBatch(targets, values, payloads, predecessor, salt);
_beforeCall(id, predecessor);
for (uint256 i = 0; i < targets.length; ++i) {
address target = targets[i];
uint256 value = values[i];
bytes calldata payload = payloads[i];
_execute(target, value, payload);
emit CallExecuted(id, i, target, value, payload);
}
_afterCall(id);
}
/**
* @dev Execute an operation's call.
*/
function _execute(
address target,
uint256 value,
bytes calldata data
) internal virtual {
(bool success, ) = target.call{value: value}(data);
require(success, "TimelockController: underlying transaction reverted");
}
/**
* @dev Checks before execution of an operation's calls.
*/
function _beforeCall(bytes32 id, bytes32 predecessor) private view {
require(isOperationReady(id), "TimelockController: operation is not ready");
require(predecessor == bytes32(0) || isOperationDone(predecessor), "TimelockController: missing dependency");
}
/**
* @dev Checks after execution of an operation's calls.
*/
function _afterCall(bytes32 id) private {
require(isOperationReady(id), "TimelockController: operation is not ready");
_timestamps[id] = _DONE_TIMESTAMP;
}
/**
* @dev Changes the minimum timelock duration for future operations.
*
* Emits a {MinDelayChange} event.
*
* Requirements:
*
* - the caller must be the timelock itself. This can only be achieved by scheduling and later executing
* an operation where the timelock is the target and the data is the ABI-encoded call to this function.
*/
function updateDelay(uint256 newDelay) external virtual {
require(msg.sender == address(this), "TimelockController: caller must be timelock");
emit MinDelayChange(_minDelay, newDelay);
_minDelay = newDelay;
}
/**
* @dev See {IERC721Receiver-onERC721Received}.
*/
function onERC721Received(
address,
address,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC721Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155Received}.
*/
function onERC1155Received(
address,
address,
uint256,
uint256,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155Received.selector;
}
/**
* @dev See {IERC1155Receiver-onERC1155BatchReceived}.
*/
function onERC1155BatchReceived(
address,
address,
uint256[] memory,
uint256[] memory,
bytes memory
) public virtual override returns (bytes4) {
return this.onERC1155BatchReceived.selector;
}
}
// File: contracts/PolygonZkEVMTimelock.sol
pragma solidity 0.8.17;
/**
* @dev Contract module which acts as a timelocked controller.
* This gives time for users of the controlled contract to exit before a potentially dangerous maintenance operation is applied.
* If emergency mode of the zkevm contract system is active, this timelock have no delay.
*/
contract PolygonZkEVMTimelock is TimelockController {
// Polygon ZK-EVM address. Will be used to check if it's on emergency state.
PolygonZkEVM public immutable polygonZkEVM;
/**
* @notice Constructor of timelock
* @param minDelay initial minimum delay for operations
* @param proposers accounts to be granted proposer and canceller roles
* @param executors accounts to be granted executor role
* @param admin optional account to be granted admin role; disable with zero address
* @param _polygonZkEVM polygonZkEVM address
**/
constructor(
uint256 minDelay,
address[] memory proposers,
address[] memory executors,
address admin,
PolygonZkEVM _polygonZkEVM
) TimelockController(minDelay, proposers, executors, admin) {
polygonZkEVM = _polygonZkEVM;
}
/**
* @dev Returns the minimum delay for an operation to become valid.
*
* This value can be changed by executing an operation that calls `updateDelay`.
* If Polygon ZK-EVM is on emergency state the minDelay will be 0 instead.
*/
function getMinDelay() public view override returns (uint256 duration) {
if (address(polygonZkEVM) != address(0) && polygonZkEVM.isEmergencyState()) {
return 0;
} else {
return super.getMinDelay();
}
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
[{"inputs":[{"internalType":"uint256","name":"minDelay","type":"uint256"},{"internalType":"address[]","name":"proposers","type":"address[]"},{"internalType":"address[]","name":"executors","type":"address[]"},{"internalType":"address","name":"admin","type":"address"},{"internalType":"contractPolygonZkEVM","name":"_polygonZkEVM","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"}],"name":"CallExecuted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"index","type":"uint256"},{"indexed":false,"internalType":"address","name":"target","type":"address"},{"indexed":false,"internalType":"uint256","name":"value","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"data","type":"bytes"},{"indexed":false,"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"delay","type":"uint256"}],"name":"CallScheduled","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"Cancelled","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint256","name":"oldDuration","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"newDuration","type":"uint256"}],"name":"MinDelayChange","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"inputs":[],"name":"CANCELLER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"EXECUTOR_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PROPOSER_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"TIMELOCK_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"cancel","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"}],"name":"execute","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"payloads","type":"bytes[]"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"}],"name":"executeBatch","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"getMinDelay","outputs":[{"internalType":"uint256","name":"duration","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"getTimestamp","outputs":[{"internalType":"uint256","name":"timestamp","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"}],"name":"hashOperation","outputs":[{"internalType":"bytes32","name":"hash","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"payloads","type":"bytes[]"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"}],"name":"hashOperationBatch","outputs":[{"internalType":"bytes32","name":"hash","type":"bytes32"}],"stateMutability":"pure","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"isOperation","outputs":[{"internalType":"bool","name":"registered","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"isOperationDone","outputs":[{"internalType":"bool","name":"done","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"isOperationPending","outputs":[{"internalType":"bool","name":"pending","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"id","type":"bytes32"}],"name":"isOperationReady","outputs":[{"internalType":"bool","name":"ready","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"uint256[]","name":"","type":"uint256[]"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155BatchReceived","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC1155Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"},{"internalType":"address","name":"","type":"address"},{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"name":"onERC721Received","outputs":[{"internalType":"bytes4","name":"","type":"bytes4"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"polygonZkEVM","outputs":[{"internalType":"contractPolygonZkEVM","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"target","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"},{"internalType":"bytes","name":"data","type":"bytes"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256","name":"delay","type":"uint256"}],"name":"schedule","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"targets","type":"address[]"},{"internalType":"uint256[]","name":"values","type":"uint256[]"},{"internalType":"bytes[]","name":"payloads","type":"bytes[]"},{"internalType":"bytes32","name":"predecessor","type":"bytes32"},{"internalType":"bytes32","name":"salt","type":"bytes32"},{"internalType":"uint256","name":"delay","type":"uint256"}],"name":"scheduleBatch","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","typ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Creation Code
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Multichain Portfolio | 30 Chains
| Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.