Warning! Contract bytecode has been changed and doesn't match the verified one. Therefore, interaction with this smart contract may be risky.
- Contract name:
- TaikoL2
- Optimization enabled
- true
- Compiler version
- v0.8.24+commit.e11b9ed9
- Optimization runs
- 200
- EVM Version
- cancun
- Verified at
- 2024-05-26T02:14:00.202253Z
contracts/L2/TaikoL2.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol"; import "../common/EssentialContract.sol"; import "../common/LibStrings.sol"; import "../libs/LibAddress.sol"; import "../signal/ISignalService.sol"; import "./Lib1559Math.sol"; import "./LibL2Config.sol"; /// @title TaikoL2 /// @notice Taiko L2 is a smart contract that handles cross-layer message /// verification and manages EIP-1559 gas pricing for Layer 2 (L2) operations. /// It is used to anchor the latest L1 block details to L2 for cross-layer /// communication, manage EIP-1559 parameters for gas pricing, and store /// verified L1 block information. /// @custom:security-contact security@taiko.xyz contract TaikoL2 is EssentialContract { using LibAddress for address; using SafeERC20 for IERC20; /// @notice Golden touch address is the only address that can do the anchor transaction. address public constant GOLDEN_TOUCH_ADDRESS = 0x0000777735367b36bC9B61C50022d9D0700dB4Ec; /// @notice Mapping from L2 block numbers to their block hashes. All L2 block hashes will /// be saved in this mapping. mapping(uint256 blockId => bytes32 blockHash) public l2Hashes; /// @notice A hash to check the integrity of public inputs. /// @dev Slot 2. bytes32 public publicInputHash; /// @notice The gas excess value used to calculate the base fee. /// @dev Slot 3. uint64 public gasExcess; /// @notice The last synced L1 block height. uint64 public lastSyncedBlock; uint64 private __deprecated1; // was parentTimestamp uint64 private __deprecated2; // was __currentBlockTimestamp /// @notice The L1's chain ID. uint64 public l1ChainId; uint256[46] private __gap; /// @notice Emitted when the latest L1 block details are anchored to L2. /// @param parentHash The hash of the parent block. /// @param gasExcess The gas excess value used to calculate the base fee. event Anchored(bytes32 parentHash, uint64 gasExcess); error L2_BASEFEE_MISMATCH(); error L2_INVALID_L1_CHAIN_ID(); error L2_INVALID_L2_CHAIN_ID(); error L2_INVALID_PARAM(); error L2_INVALID_SENDER(); error L2_PUBLIC_INPUT_HASH_MISMATCH(); error L2_TOO_LATE(); /// @notice Initializes the contract. /// @param _owner The owner of this contract. msg.sender will be used if this value is zero. /// @param _addressManager The address of the {AddressManager} contract. /// @param _l1ChainId The ID of the base layer. /// @param _gasExcess The initial gasExcess. function init( address _owner, address _addressManager, uint64 _l1ChainId, uint64 _gasExcess ) external initializer { __Essential_init(_owner, _addressManager); if (_l1ChainId == 0 || _l1ChainId == block.chainid) { revert L2_INVALID_L1_CHAIN_ID(); } if (block.chainid <= 1 || block.chainid > type(uint64).max) { revert L2_INVALID_L2_CHAIN_ID(); } if (block.number == 0) { // This is the case in real L2 genesis } else if (block.number == 1) { // This is the case in tests uint256 parentHeight = block.number - 1; l2Hashes[parentHeight] = blockhash(parentHeight); } else { revert L2_TOO_LATE(); } l1ChainId = _l1ChainId; gasExcess = _gasExcess; (publicInputHash,) = _calcPublicInputHash(block.number); } /// @notice Anchors the latest L1 block details to L2 for cross-layer /// message verification. /// @dev This function can be called freely as the golden touch private key is publicly known, /// but the Taiko node guarantees the first transaction of each block is always this anchor /// transaction, and any subsequent calls will revert with L2_PUBLIC_INPUT_HASH_MISMATCH. /// @param _l1BlockHash The latest L1 block hash when this block was /// proposed. /// @param _l1StateRoot The latest L1 block's state root. /// @param _l1BlockId The latest L1 block height when this block was proposed. /// @param _parentGasUsed The gas used in the parent block. function anchor( bytes32 _l1BlockHash, bytes32 _l1StateRoot, uint64 _l1BlockId, uint32 _parentGasUsed ) external nonReentrant { if ( _l1BlockHash == 0 || _l1StateRoot == 0 || _l1BlockId == 0 || (block.number != 1 && _parentGasUsed == 0) ) { revert L2_INVALID_PARAM(); } if (msg.sender != GOLDEN_TOUCH_ADDRESS) revert L2_INVALID_SENDER(); uint256 parentId; unchecked { parentId = block.number - 1; } // Verify ancestor hashes (bytes32 publicInputHashOld, bytes32 publicInputHashNew) = _calcPublicInputHash(parentId); if (publicInputHash != publicInputHashOld) { revert L2_PUBLIC_INPUT_HASH_MISMATCH(); } // Verify the base fee per gas is correct (uint256 _basefee, uint64 _gasExcess) = getBasefee(_l1BlockId, _parentGasUsed); if (!skipFeeCheck() && block.basefee != _basefee) { revert L2_BASEFEE_MISMATCH(); } if (_l1BlockId > lastSyncedBlock) { // Store the L1's state root as a signal to the local signal service to // allow for multi-hop bridging. ISignalService(resolve(LibStrings.B_SIGNAL_SERVICE, false)).syncChainData( l1ChainId, LibStrings.H_STATE_ROOT, _l1BlockId, _l1StateRoot ); lastSyncedBlock = _l1BlockId; } // Update state variables bytes32 _parentHash = blockhash(parentId); l2Hashes[parentId] = _parentHash; publicInputHash = publicInputHashNew; gasExcess = _gasExcess; emit Anchored(_parentHash, _gasExcess); } /// @notice Withdraw token or Ether from this address /// @param _token Token address or address(0) if Ether. /// @param _to Withdraw to address. function withdraw( address _token, address _to ) external whenNotPaused onlyFromOwnerOrNamed(LibStrings.B_WITHDRAWER) nonReentrant { if (_to == address(0)) revert L2_INVALID_PARAM(); if (_token == address(0)) { _to.sendEtherAndVerify(address(this).balance); } else { IERC20(_token).safeTransfer(_to, IERC20(_token).balanceOf(address(this))); } } /// @notice Gets the basefee and gas excess using EIP-1559 configuration for /// the given parameters. /// @param _l1BlockId The synced L1 height in the next Taiko block /// @param _parentGasUsed Gas used in the parent block. /// @return basefee_ The calculated EIP-1559 base fee per gas. /// @return gasExcess_ The new gasExcess value. function getBasefee( uint64 _l1BlockId, uint32 _parentGasUsed ) public view returns (uint256 basefee_, uint64 gasExcess_) { LibL2Config.Config memory config = getConfig(); uint64 gasIssuance = uint64(_l1BlockId - lastSyncedBlock) * config.gasTargetPerL1Block; (basefee_, gasExcess_) = Lib1559Math.calc1559BaseFee( config.gasTargetPerL1Block, config.basefeeAdjustmentQuotient, gasExcess, gasIssuance, _parentGasUsed ); } /// @notice Retrieves the block hash for the given L2 block number. /// @param _blockId The L2 block number to retrieve the block hash for. /// @return The block hash for the specified L2 block id, or zero if the /// block id is greater than or equal to the current block number. function getBlockHash(uint64 _blockId) public view returns (bytes32) { if (_blockId >= block.number) return 0; if (_blockId + 256 >= block.number) return blockhash(_blockId); return l2Hashes[_blockId]; } /// @notice Returns EIP1559 related configurations. /// @return config_ struct containing configuration parameters. function getConfig() public view virtual returns (LibL2Config.Config memory) { return LibL2Config.get(); } /// @notice Tells if we need to validate basefee (for simulation). /// @return Returns true to skip checking basefee mismatch. function skipFeeCheck() public pure virtual returns (bool) { return false; } function _calcPublicInputHash(uint256 _blockId) private view returns (bytes32 publicInputHashOld, bytes32 publicInputHashNew) { bytes32[256] memory inputs; // Unchecked is safe because it cannot overflow. unchecked { // Put the previous 255 blockhashes (excluding the parent's) into a // ring buffer. for (uint256 i; i < 255 && _blockId >= i + 1; ++i) { uint256 j = _blockId - i - 1; inputs[j % 255] = blockhash(j); } } inputs[255] = bytes32(block.chainid); assembly { publicInputHashOld := keccak256(inputs, 8192 /*mul(256, 32)*/ ) } inputs[_blockId % 255] = blockhash(_blockId); assembly { publicInputHashNew := keccak256(inputs, 8192 /*mul(256, 32)*/ ) } } }
contracts/L2/Lib1559Math.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import "../thirdparty/solmate/LibFixedPointMath.sol"; import "../libs/LibMath.sol"; /// @title Lib1559Math /// @notice Implements e^(x) based bonding curve for EIP-1559 /// @dev See https://ethresear.ch/t/make-eip-1559-more-like-an-amm-curve/9082 but some minor /// difference as stated in docs/eip1559_on_l2.md. /// @custom:security-contact security@taiko.xyz library Lib1559Math { using LibMath for uint256; error EIP1559_INVALID_PARAMS(); function calc1559BaseFee( uint32 _gasTargetPerL1Block, uint8 _adjustmentQuotient, uint64 _gasExcess, uint64 _gasIssuance, uint32 _parentGasUsed ) internal pure returns (uint256 basefee_, uint64 gasExcess_) { // We always add the gas used by parent block to the gas excess // value as this has already happened uint256 excess = uint256(_gasExcess) + _parentGasUsed; excess = excess > _gasIssuance ? excess - _gasIssuance : 1; gasExcess_ = uint64(excess.min(type(uint64).max)); // The base fee per gas used by this block is the spot price at the // bonding curve, regardless the actual amount of gas used by this // block, however, this block's gas used will affect the next // block's base fee. basefee_ = basefee(gasExcess_, uint256(_adjustmentQuotient) * _gasTargetPerL1Block); // Always make sure basefee is nonzero, this is required by the node. if (basefee_ == 0) basefee_ = 1; } /// @dev eth_qty(excess_gas_issued) / (TARGET * ADJUSTMENT_QUOTIENT) /// @param _gasExcess The gas excess value /// @param _adjustmentFactor The product of gasTarget and adjustmentQuotient function basefee( uint256 _gasExcess, uint256 _adjustmentFactor ) internal pure returns (uint256) { if (_adjustmentFactor == 0) { revert EIP1559_INVALID_PARAMS(); } return _ethQty(_gasExcess, _adjustmentFactor) / LibFixedPointMath.SCALING_FACTOR; } /// @dev exp(gas_qty / TARGET / ADJUSTMENT_QUOTIENT) function _ethQty( uint256 _gasExcess, uint256 _adjustmentFactor ) private pure returns (uint256) { uint256 input = _gasExcess * LibFixedPointMath.SCALING_FACTOR / _adjustmentFactor; if (input > LibFixedPointMath.MAX_EXP_INPUT) { input = LibFixedPointMath.MAX_EXP_INPUT; } return uint256(LibFixedPointMath.exp(int256(input))); } }
contracts/L2/LibL2Config.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title LibL2Config library LibL2Config { struct Config { uint32 gasTargetPerL1Block; uint8 basefeeAdjustmentQuotient; } /// @notice Returns EIP1559 related configurations. /// @return config_ struct containing configuration parameters. function get() internal pure returns (Config memory config_) { // Assuming we sell 3x more blockspace than Ethereum: 15_000_000 * 4 // Note that Brecht's concern is that this value may be too large. // We need to monitor L2 state growth and lower this value when necessary. config_.gasTargetPerL1Block = 60_000_000; config_.basefeeAdjustmentQuotient = 8; } }
contracts/common/AddressResolver.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "./IAddressManager.sol"; import "./IAddressResolver.sol"; /// @title AddressResolver /// @notice See the documentation in {IAddressResolver}. /// @custom:security-contact security@taiko.xyz abstract contract AddressResolver is IAddressResolver, Initializable { /// @notice Address of the AddressManager. address public addressManager; uint256[49] private __gap; error RESOLVER_DENIED(); error RESOLVER_INVALID_MANAGER(); error RESOLVER_UNEXPECTED_CHAINID(); error RESOLVER_ZERO_ADDR(uint64 chainId, bytes32 name); /// @dev Modifier that ensures the caller is the resolved address of a given /// name. /// @param _name The name to check against. modifier onlyFromNamed(bytes32 _name) { if (msg.sender != resolve(_name, true)) revert RESOLVER_DENIED(); _; } /// @dev Modifier that ensures the caller is a resolved address to either _name1 or _name2 /// name. /// @param _name1 The first name to check against. /// @param _name2 The second name to check against. modifier onlyFromNamedEither(bytes32 _name1, bytes32 _name2) { if (msg.sender != resolve(_name1, true) && msg.sender != resolve(_name2, true)) { revert RESOLVER_DENIED(); } _; } /// @custom:oz-upgrades-unsafe-allow constructor constructor() { _disableInitializers(); } /// @inheritdoc IAddressResolver function resolve( bytes32 _name, bool _allowZeroAddress ) public view virtual returns (address payable) { return _resolve(uint64(block.chainid), _name, _allowZeroAddress); } /// @inheritdoc IAddressResolver function resolve( uint64 _chainId, bytes32 _name, bool _allowZeroAddress ) public view virtual returns (address payable) { return _resolve(_chainId, _name, _allowZeroAddress); } /// @dev Initialization method for setting up AddressManager reference. /// @param _addressManager Address of the AddressManager. function __AddressResolver_init(address _addressManager) internal virtual onlyInitializing { if (block.chainid > type(uint64).max) { revert RESOLVER_UNEXPECTED_CHAINID(); } addressManager = _addressManager; } /// @dev Helper method to resolve name-to-address. /// @param _chainId The chainId of interest. /// @param _name Name whose address is to be resolved. /// @param _allowZeroAddress If set to true, does not throw if the resolved /// address is `address(0)`. /// @return addr_ Address associated with the given name on the specified /// chain. function _resolve( uint64 _chainId, bytes32 _name, bool _allowZeroAddress ) private view returns (address payable addr_) { address _addressManager = addressManager; if (_addressManager == address(0)) revert RESOLVER_INVALID_MANAGER(); addr_ = payable(IAddressManager(_addressManager).getAddress(_chainId, _name)); if (!_allowZeroAddress && addr_ == address(0)) { revert RESOLVER_ZERO_ADDR(_chainId, _name); } } }
contracts/common/EssentialContract.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import "@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol"; import "./AddressResolver.sol"; import "../libs/LibNetwork.sol"; /// @title EssentialContract /// @custom:security-contact security@taiko.xyz abstract contract EssentialContract is UUPSUpgradeable, Ownable2StepUpgradeable, AddressResolver { uint8 private constant _FALSE = 1; uint8 private constant _TRUE = 2; /// @dev The slot in transient storage of the reentry lock. /// This is the result of keccak256("ownerUUPS.reentry_slot") plus 1. The addition aims to /// prevent hash collisions with slots defined in EIP-1967, where slots are derived by /// keccak256("something") - 1, and with slots in SignalService, calculated directly with /// keccak256("something"). bytes32 private constant _REENTRY_SLOT = 0xa5054f728453d3dbe953bdc43e4d0cb97e662ea32d7958190f3dc2da31d9721b; /// @dev Slot 1. uint8 private __reentry; uint8 private __paused; uint64 public lastUnpausedAt; uint256[49] private __gap; /// @notice Emitted when the contract is paused. /// @param account The account that paused the contract. event Paused(address account); /// @notice Emitted when the contract is unpaused. /// @param account The account that unpaused the contract. event Unpaused(address account); error INVALID_PAUSE_STATUS(); error FUNC_NOT_IMPLEMENTED(); error REENTRANT_CALL(); error ZERO_ADDRESS(); error ZERO_VALUE(); /// @dev Modifier that ensures the caller is the owner or resolved address of a given name. /// @param _name The name to check against. modifier onlyFromOwnerOrNamed(bytes32 _name) { if (msg.sender != owner() && msg.sender != resolve(_name, true)) revert RESOLVER_DENIED(); _; } modifier notImplemented() { revert FUNC_NOT_IMPLEMENTED(); _; } modifier nonReentrant() { if (_loadReentryLock() == _TRUE) revert REENTRANT_CALL(); _storeReentryLock(_TRUE); _; _storeReentryLock(_FALSE); } modifier whenPaused() { if (!paused()) revert INVALID_PAUSE_STATUS(); _; } modifier whenNotPaused() { if (paused()) revert INVALID_PAUSE_STATUS(); _; } modifier nonZeroAddr(address _addr) { if (_addr == address(0)) revert ZERO_ADDRESS(); _; } modifier nonZeroValue(bytes32 _value) { if (_value == 0) revert ZERO_VALUE(); _; } /// @custom:oz-upgrades-unsafe-allow constructor constructor() { _disableInitializers(); } /// @notice Pauses the contract. function pause() public virtual { _pause(); // We call the authorize function here to avoid: // Warning (5740): Unreachable code. _authorizePause(msg.sender, true); } /// @notice Unpauses the contract. function unpause() public virtual { _unpause(); // We call the authorize function here to avoid: // Warning (5740): Unreachable code. _authorizePause(msg.sender, false); } function impl() public view returns (address) { return _getImplementation(); } /// @notice Returns true if the contract is paused, and false otherwise. /// @return true if paused, false otherwise. function paused() public view returns (bool) { return __paused == _TRUE; } function inNonReentrant() public view returns (bool) { return _loadReentryLock() == _TRUE; } /// @notice Initializes the contract. /// @param _owner The owner of this contract. msg.sender will be used if this value is zero. /// @param _addressManager The address of the {AddressManager} contract. function __Essential_init( address _owner, address _addressManager ) internal nonZeroAddr(_addressManager) { __Essential_init(_owner); __AddressResolver_init(_addressManager); } function __Essential_init(address _owner) internal virtual onlyInitializing { __Context_init(); _transferOwnership(_owner == address(0) ? msg.sender : _owner); __paused = _FALSE; } function _pause() internal whenNotPaused { __paused = _TRUE; emit Paused(msg.sender); } function _unpause() internal whenPaused { __paused = _FALSE; lastUnpausedAt = uint64(block.timestamp); emit Unpaused(msg.sender); } function _authorizeUpgrade(address) internal virtual override onlyOwner { } function _authorizePause(address, bool) internal virtual onlyOwner { } // Stores the reentry lock function _storeReentryLock(uint8 _reentry) internal virtual { if (LibNetwork.isDencunSupported(block.chainid)) { assembly { tstore(_REENTRY_SLOT, _reentry) } } else { __reentry = _reentry; } } // Loads the reentry lock function _loadReentryLock() internal view virtual returns (uint8 reentry_) { if (LibNetwork.isDencunSupported(block.chainid)) { assembly { reentry_ := tload(_REENTRY_SLOT) } } else { reentry_ = __reentry; } } }
contracts/common/IAddressManager.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title IAddressManager /// @notice Manages a mapping of (chainId, name) pairs to Ethereum addresses. /// @custom:security-contact security@taiko.xyz interface IAddressManager { /// @notice Gets the address mapped to a specific chainId-name pair. /// @dev Note that in production, this method shall be a pure function /// without any storage access. /// @param _chainId The chainId for which the address needs to be fetched. /// @param _name The name for which the address needs to be fetched. /// @return Address associated with the chainId-name pair. function getAddress(uint64 _chainId, bytes32 _name) external view returns (address); }
contracts/common/IAddressResolver.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title IAddressResolver /// @notice This contract acts as a bridge for name-to-address resolution. /// It delegates the resolution to the AddressManager. By separating the logic, /// we can maintain flexibility in address management without affecting the /// resolving process. /// @dev Note that the address manager should be changed using upgradability, there /// is no setAddressManager() function to guarantee atomicity across all /// contracts that are resolvers. /// @custom:security-contact security@taiko.xyz interface IAddressResolver { /// @notice Resolves a name to its address deployed on this chain. /// @param _name Name whose address is to be resolved. /// @param _allowZeroAddress If set to true, does not throw if the resolved /// address is `address(0)`. /// @return Address associated with the given name. function resolve( bytes32 _name, bool _allowZeroAddress ) external view returns (address payable); /// @notice Resolves a name to its address deployed on a specified chain. /// @param _chainId The chainId of interest. /// @param _name Name whose address is to be resolved. /// @param _allowZeroAddress If set to true, does not throw if the resolved /// address is `address(0)`. /// @return Address associated with the given name on the specified /// chain. function resolve( uint64 _chainId, bytes32 _name, bool _allowZeroAddress ) external view returns (address payable); }
contracts/common/LibStrings.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title LibStrings /// @custom:security-contact security@taiko.xyz library LibStrings { bytes32 internal constant B_ASSIGNMENT_HOOK = bytes32("assignment_hook"); bytes32 internal constant B_AUTOMATA_DCAP_ATTESTATION = bytes32("automata_dcap_attestation"); bytes32 internal constant B_BRIDGE = bytes32("bridge"); bytes32 internal constant B_BRIDGE_WATCHDOG = bytes32("bridge_watchdog"); bytes32 internal constant B_BRIDGED_ERC1155 = bytes32("bridged_erc1155"); bytes32 internal constant B_BRIDGED_ERC20 = bytes32("bridged_erc20"); bytes32 internal constant B_BRIDGED_ERC721 = bytes32("bridged_erc721"); bytes32 internal constant B_CHAIN_WATCHDOG = bytes32("chain_watchdog"); bytes32 internal constant B_ERC1155_VAULT = bytes32("erc1155_vault"); bytes32 internal constant B_ERC20_VAULT = bytes32("erc20_vault"); bytes32 internal constant B_ERC721_VAULT = bytes32("erc721_vault"); bytes32 internal constant B_PROPOSER = bytes32("proposer"); bytes32 internal constant B_PROPOSER_ONE = bytes32("proposer_one"); bytes32 internal constant B_PROVER_ASSIGNMENT = bytes32("PROVER_ASSIGNMENT"); bytes32 internal constant B_PROVER_SET = bytes32("prover_set"); bytes32 internal constant B_QUOTA_MANAGER = bytes32("quota_manager"); bytes32 internal constant B_SGX_WATCHDOG = bytes32("sgx_watchdog"); bytes32 internal constant B_SIGNAL_SERVICE = bytes32("signal_service"); bytes32 internal constant B_TAIKO = bytes32("taiko"); bytes32 internal constant B_TAIKO_TOKEN = bytes32("taiko_token"); bytes32 internal constant B_TIER_GUARDIAN = bytes32("tier_guardian"); bytes32 internal constant B_TIER_GUARDIAN_MINORITY = bytes32("tier_guardian_minority"); bytes32 internal constant B_TIER_PROVIDER = bytes32("tier_provider"); bytes32 internal constant B_TIER_SGX = bytes32("tier_sgx"); bytes32 internal constant B_TIER_SGX_ZKVM = bytes32("tier_sgx_zkvm"); bytes32 internal constant B_WITHDRAWER = bytes32("withdrawer"); bytes32 internal constant H_RETURN_LIVENESS_BOND = keccak256("RETURN_LIVENESS_BOND"); bytes32 internal constant H_SIGNAL_ROOT = keccak256("SIGNAL_ROOT"); bytes32 internal constant H_STATE_ROOT = keccak256("STATE_ROOT"); }
contracts/libs/LibAddress.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; import "@openzeppelin/contracts/utils/Address.sol"; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import "@openzeppelin/contracts/interfaces/IERC1271.sol"; /// @title LibAddress /// @dev Provides utilities for address-related operations. /// @custom:security-contact security@taiko.xyz library LibAddress { error ETH_TRANSFER_FAILED(); /// @dev Sends Ether to the specified address. This method will not revert even if sending ether /// fails. /// This function is inspired by /// https://github.com/nomad-xyz/ExcessivelySafeCall/blob/main/src/ExcessivelySafeCall.sol /// @param _to The recipient address. /// @param _amount The amount of Ether to send in wei. /// @param _gasLimit The max amount gas to pay for this transaction. /// @return success_ true if the call is successful, false otherwise. function sendEther( address _to, uint256 _amount, uint256 _gasLimit, bytes memory _calldata ) internal returns (bool success_) { // Check for zero-address transactions if (_to == address(0)) revert ETH_TRANSFER_FAILED(); // dispatch message to recipient // by assembly calling "handle" function // we call via assembly to avoid memcopying a very large returndata // returned by a malicious contract assembly { success_ := call( _gasLimit, // gas _to, // recipient _amount, // ether value add(_calldata, 0x20), // inloc mload(_calldata), // inlen 0, // outloc 0 // outlen ) } } /// @dev Sends Ether to the specified address. This method will revert if sending ether fails. /// @param _to The recipient address. /// @param _amount The amount of Ether to send in wei. /// @param _gasLimit The max amount gas to pay for this transaction. function sendEtherAndVerify(address _to, uint256 _amount, uint256 _gasLimit) internal { if (_amount == 0) return; if (!sendEther(_to, _amount, _gasLimit, "")) { revert ETH_TRANSFER_FAILED(); } } /// @dev Sends Ether to the specified address. This method will revert if sending ether fails. /// @param _to The recipient address. /// @param _amount The amount of Ether to send in wei. function sendEtherAndVerify(address _to, uint256 _amount) internal { sendEtherAndVerify(_to, _amount, gasleft()); } function supportsInterface( address _addr, bytes4 _interfaceId ) internal view returns (bool result_) { if (!Address.isContract(_addr)) return false; try IERC165(_addr).supportsInterface(_interfaceId) returns (bool _result) { result_ = _result; } catch { } } }
contracts/libs/LibMath.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title LibMath /// @dev This library offers additional math functions for uint256. /// @custom:security-contact security@taiko.xyz library LibMath { /// @dev Returns the smaller of the two given values. /// @param _a The first number to compare. /// @param _b The second number to compare. /// @return The smaller of the two numbers. function min(uint256 _a, uint256 _b) internal pure returns (uint256) { return _a > _b ? _b : _a; } /// @dev Returns the larger of the two given values. /// @param _a The first number to compare. /// @param _b The second number to compare. /// @return The larger of the two numbers. function max(uint256 _a, uint256 _b) internal pure returns (uint256) { return _a > _b ? _a : _b; } }
contracts/libs/LibNetwork.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title LibNetwork library LibNetwork { uint256 internal constant MAINNET = 1; uint256 internal constant ROPSTEN = 2; uint256 internal constant RINKEBY = 4; uint256 internal constant GOERLI = 5; uint256 internal constant KOVAN = 42; uint256 internal constant HOLESKY = 17_000; uint256 internal constant SEPOLIA = 11_155_111; uint64 internal constant TAIKO = 167_000; /// @dev Checks if the chain ID represents an Ethereum testnet. /// @param _chainId The chain ID. /// @return true if the chain ID represents an Ethereum testnet, false otherwise. function isEthereumTestnet(uint256 _chainId) internal pure returns (bool) { return _chainId == LibNetwork.ROPSTEN || _chainId == LibNetwork.RINKEBY || _chainId == LibNetwork.GOERLI || _chainId == LibNetwork.KOVAN || _chainId == LibNetwork.HOLESKY || _chainId == LibNetwork.SEPOLIA; } /// @dev Checks if the chain ID represents an Ethereum testnet or the Etheruem mainnet. /// @param _chainId The chain ID. /// @return true if the chain ID represents an Ethereum testnet or the Etheruem mainnet, false /// otherwise. function isEthereumMainnetOrTestnet(uint256 _chainId) internal pure returns (bool) { return _chainId == LibNetwork.MAINNET || isEthereumTestnet(_chainId); } /// @dev Checks if the chain ID represents the Taiko L2 mainnet. /// @param _chainId The chain ID. /// @return true if the chain ID represents the Taiko L2 mainnet. function isTaikoMainnet(uint256 _chainId) internal pure returns (bool) { return _chainId == TAIKO; } /// @dev Checks if the chain ID represents an internal Taiko devnet's base layer. /// @param _chainId The chain ID. /// @return true if the chain ID represents an internal Taiko devnet's base layer, false /// otherwise. function isTaikoDevnet(uint256 _chainId) internal pure returns (bool) { return _chainId >= 32_300 && _chainId <= 32_400; } /// @dev Checks if the chain supports Dencun hardfork. Note that this check doesn't need to be /// exhaustive. /// @param _chainId The chain ID. /// @return true if the chain supports Dencun hardfork, false otherwise. function isDencunSupported(uint256 _chainId) internal pure returns (bool) { return _chainId == LibNetwork.MAINNET || _chainId == LibNetwork.HOLESKY || _chainId == LibNetwork.SEPOLIA || isTaikoDevnet(_chainId); } }
contracts/signal/ISignalService.sol
// SPDX-License-Identifier: MIT pragma solidity 0.8.24; /// @title ISignalService /// @notice The SignalService contract serves as a secure cross-chain message /// passing system. It defines methods for sending and verifying signals with /// merkle proofs. The trust assumption is that the target chain has secure /// access to the merkle root (such as Taiko injects it in the anchor /// transaction). With this, verifying a signal is reduced to simply verifying /// a merkle proof. /// @custom:security-contact security@taiko.xyz interface ISignalService { enum CacheOption { CACHE_NOTHING, CACHE_SIGNAL_ROOT, CACHE_STATE_ROOT, CACHE_BOTH } struct HopProof { /// @notice This hop's destination chain ID. If there is a next hop, this ID is the next /// hop's source chain ID. uint64 chainId; /// @notice The ID of a source chain block whose state root has been synced to the hop's /// destination chain. /// Note that this block ID must be greater than or equal to the block ID where the signal /// was sent on the source chain. uint64 blockId; /// @notice The state root or signal root of the source chain at the above blockId. This /// value has been synced to the destination chain. /// @dev To get both the blockId and the rootHash, apps should subscribe to the /// ChainDataSynced event or query `topBlockId` first using the source chain's ID and /// LibStrings.H_STATE_ROOT to get the most recent block ID synced, then call /// `getSyncedChainData` to read the synchronized data. bytes32 rootHash; /// @notice Options to cache either the state roots or signal roots of middle-hops to the /// current chain. CacheOption cacheOption; /// @notice The signal service's account proof. If this value is empty, then `rootHash` will /// be used as the signal root, otherwise, `rootHash` will be used as the state root. bytes[] accountProof; /// @notice The signal service's storage proof. bytes[] storageProof; } /// @notice Emitted when a remote chain's state root or signal root is /// synced locally as a signal. /// @param chainId The remote chainId. /// @param blockId The chain data's corresponding blockId. /// @param kind A value to mark the data type. /// @param data The remote data. /// @param signal The signal for this chain data. event ChainDataSynced( uint64 indexed chainId, uint64 indexed blockId, bytes32 indexed kind, bytes32 data, bytes32 signal ); /// @notice Emitted when a signal is sent. /// @param app The address that initiated the signal. /// @param signal The signal (message) that was sent. /// @param slot The location in storage where this signal is stored. /// @param value The value of the signal. event SignalSent(address app, bytes32 signal, bytes32 slot, bytes32 value); /// @notice Emitted when an address is authorized or deauthorized. /// @param addr The address to be authorized or deauthorized. /// @param authorized True if authorized, false otherwise. event Authorized(address indexed addr, bool authorized); /// @notice Send a signal (message) by setting the storage slot to a value of 1. /// @param _signal The signal (message) to send. /// @return slot_ The location in storage where this signal is stored. function sendSignal(bytes32 _signal) external returns (bytes32 slot_); /// @notice Sync a data from a remote chain locally as a signal. The signal is calculated /// uniquely from chainId, kind, and data. /// @param _chainId The remote chainId. /// @param _kind A value to mark the data type. /// @param _blockId The chain data's corresponding blockId /// @param _chainData The remote data. /// @return signal_ The signal for this chain data. function syncChainData( uint64 _chainId, bytes32 _kind, uint64 _blockId, bytes32 _chainData ) external returns (bytes32 signal_); /// @notice Verifies if a signal has been received on the target chain. /// @param _chainId The identifier for the source chain from which the /// signal originated. /// @param _app The address that initiated the signal. /// @param _signal The signal (message) to send. /// @param _proof Merkle proof that the signal was persisted on the /// source chain. /// @return numCacheOps_ The number of newly cached items. function proveSignalReceived( uint64 _chainId, address _app, bytes32 _signal, bytes calldata _proof ) external returns (uint256 numCacheOps_); /// @notice Verifies if a signal has been received on the target chain. /// This is the "readonly" version of proveSignalReceived. /// @param _chainId The identifier for the source chain from which the /// signal originated. /// @param _app The address that initiated the signal. /// @param _signal The signal (message) to send. /// @param _proof Merkle proof that the signal was persisted on the /// source chain. function verifySignalReceived( uint64 _chainId, address _app, bytes32 _signal, bytes calldata _proof ) external view; /// @notice Verifies if a particular signal has already been sent. /// @param _app The address that initiated the signal. /// @param _signal The signal (message) that was sent. /// @return true if the signal has been sent, otherwise false. function isSignalSent(address _app, bytes32 _signal) external view returns (bool); /// @notice Checks if a chain data has been synced. /// uniquely from chainId, kind, and data. /// @param _chainId The remote chainId. /// @param _kind A value to mark the data type. /// @param _blockId The chain data's corresponding blockId /// @param _chainData The remote data. /// @return true if the data has been synced, otherwise false. function isChainDataSynced( uint64 _chainId, bytes32 _kind, uint64 _blockId, bytes32 _chainData ) external view returns (bool); /// @notice Returns the given block's chain data. /// @param _chainId Identifier of the chainId. /// @param _kind A value to mark the data type. /// @param _blockId The chain data's corresponding block id. If this value is 0, use the top /// block id. /// @return blockId_ The actual block id. /// @return chainData_ The synced chain data. function getSyncedChainData( uint64 _chainId, bytes32 _kind, uint64 _blockId ) external view returns (uint64 blockId_, bytes32 chainData_); /// @notice Returns the data to be used for caching slot generation. /// @param _chainId Identifier of the chainId. /// @param _kind A value to mark the data type. /// @param _blockId The chain data's corresponding block id. If this value is 0, use the top /// block id. /// @return signal_ The signal used for caching slot creation. function signalForChainData( uint64 _chainId, bytes32 _kind, uint64 _blockId ) external pure returns (bytes32 signal_); }
contracts/thirdparty/solmate/LibFixedPointMath.sol
// SPDX-License-Identifier: MIT // Taken from the contract below, expWad() function tailored to Taiko's need // https://github.com/transmissions11/solmate/blob/v7/src/utils/FixedPointMathLib.sol pragma solidity 0.8.24; library LibFixedPointMath { uint128 public constant MAX_EXP_INPUT = 135_305_999_368_893_231_588; uint256 public constant SCALING_FACTOR = 1e18; // For fixed point representation factor error Overflow(); // Computes e^x in 1e18 fixed point. function exp(int256 x) internal pure returns (int256 r) { unchecked { // Input x is in fixed point format, with scale factor 1/1e18. // When the result is < 0.5 we return zero. This happens when // x <= floor(log(0.5e18) * 1e18) ~ -42e18 if (x <= -42_139_678_854_452_767_551) { return 0; } // When the result is > (2**255 - 1) / 1e18 we can not represent it // as an int256. This happens when x >= floor(log((2**255 -1) / // 1e18) * 1e18) ~ 135. if (x >= 135_305_999_368_893_231_589) revert Overflow(); // x is now in the range (-42, 136) * 1e18. Convert to (-42, 136) * // 2**96 // for more intermediate precision and a binary basis. This base // conversion // is a multiplication by 1e18 / 2**96 = 5**18 / 2**78. x = (x << 78) / 5 ** 18; // Reduce range of x to (-½ ln 2, ½ ln 2) * 2**96 by factoring out // powers of two // such that exp(x) = exp(x') * 2**k, where k is an integer. // Solving this gives k = round(x / log(2)) and x' = x - k * log(2). int256 k = ((x << 96) / 54_916_777_467_707_473_351_141_471_128 + 2 ** 95) >> 96; x = x - k * 54_916_777_467_707_473_351_141_471_128; // k is in the range [-61, 195]. // Evaluate using a (6, 7)-term rational approximation. // p is made monic, we'll multiply by a scale factor later. int256 y = x + 1_346_386_616_545_796_478_920_950_773_328; y = ((y * x) >> 96) + 57_155_421_227_552_351_082_224_309_758_442; int256 p = y + x - 94_201_549_194_550_492_254_356_042_504_812; p = ((p * y) >> 96) + 28_719_021_644_029_726_153_956_944_680_412_240; p = p * x + (4_385_272_521_454_847_904_659_076_985_693_276 << 96); // We leave p in 2**192 basis so we don't need to scale it back up // for the division. int256 q = x - 2_855_989_394_907_223_263_936_484_059_900; q = ((q * x) >> 96) + 50_020_603_652_535_783_019_961_831_881_945; q = ((q * x) >> 96) - 533_845_033_583_426_703_283_633_433_725_380; q = ((q * x) >> 96) + 3_604_857_256_930_695_427_073_651_918_091_429; q = ((q * x) >> 96) - 14_423_608_567_350_463_180_887_372_962_807_573; q = ((q * x) >> 96) + 26_449_188_498_355_588_339_934_803_723_976_023; assembly { // Div in assembly because solidity adds a zero check despite // the `unchecked`. // The q polynomial is known not to have zeros in the domain. // (All roots are complex) // No scaling required because p is already 2**96 too large. r := sdiv(p, q) } // r should be in the range (0.09, 0.25) * 2**96. // We now need to multiply r by // * the scale factor s = ~6.031367120..., // * the 2**k factor from the range reduction, and // * the 1e18 / 2**96 factor for base conversion. // We do all of this at once, with an intermediate result in 2**213 // basis // so the final right shift is always by a positive amount. r = int256( (uint256(r) * 3_822_833_074_963_236_453_042_738_258_902_158_003_155_416_615_667) >> uint256(195 - k) ); } } }
node_modules/@openzeppelin/contracts-upgradeable/access/Ownable2StepUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable2Step.sol) pragma solidity ^0.8.0; import "./OwnableUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides 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} and {acceptOwnership}. * * This module is used through inheritance. It will make available all functions * from parent (Ownable). */ abstract contract Ownable2StepUpgradeable is Initializable, OwnableUpgradeable { address private _pendingOwner; event OwnershipTransferStarted(address indexed previousOwner, address indexed newOwner); function __Ownable2Step_init() internal onlyInitializing { __Ownable_init_unchained(); } function __Ownable2Step_init_unchained() internal onlyInitializing { } /** * @dev Returns the address of the pending owner. */ function pendingOwner() public view virtual returns (address) { return _pendingOwner; } /** * @dev Starts the ownership transfer of the contract to a new account. Replaces the pending transfer if there is one. * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual override onlyOwner { _pendingOwner = newOwner; emit OwnershipTransferStarted(owner(), newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`) and deletes any pending owner. * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual override { delete _pendingOwner; super._transferOwnership(newOwner); } /** * @dev The new owner accepts the ownership transfer. */ function acceptOwnership() public virtual { address sender = _msgSender(); require(pendingOwner() == sender, "Ownable2Step: caller is not the new owner"); _transferOwnership(sender); } /** * @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; }
node_modules/@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @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. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling 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; }
node_modules/@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.2; import "../../utils/AddressUpgradeable.sol"; /** * @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] * ```solidity * 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; } }
node_modules/@openzeppelin/contracts-upgradeable/utils/AddressUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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); } } }
node_modules/@openzeppelin/contracts-upgradeable/utils/ContextUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (utils/Context.sol) pragma solidity ^0.8.0; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @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; } function _contextSuffixLength() internal view virtual returns (uint256) { return 0; } /** * @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; }
node_modules/@openzeppelin/contracts/interfaces/IERC1271.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (interfaces/IERC1271.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC1271 standard signature validation method for * contracts as defined in https://eips.ethereum.org/EIPS/eip-1271[ERC-1271]. * * _Available since v4.1._ */ interface IERC1271 { /** * @dev Should return whether the signature provided is valid for the provided data * @param hash Hash of the data to be signed * @param signature Signature byte array associated with _data */ function isValidSignature(bytes32 hash, bytes memory signature) external view returns (bytes4 magicValue); }
node_modules/@openzeppelin/contracts/interfaces/IERC1967.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (interfaces/IERC1967.sol) pragma solidity ^0.8.0; /** * @dev ERC-1967: Proxy Storage Slots. This interface contains the events defined in the ERC. * * _Available since v4.8.3._ */ interface IERC1967 { /** * @dev Emitted when the implementation is upgraded. */ event Upgraded(address indexed implementation); /** * @dev Emitted when the admin account has changed. */ event AdminChanged(address previousAdmin, address newAdmin); /** * @dev Emitted when the beacon is changed. */ event BeaconUpgraded(address indexed beacon); }
node_modules/@openzeppelin/contracts/interfaces/draft-IERC1822.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.5.0) (interfaces/draft-IERC1822.sol) pragma solidity ^0.8.0; /** * @dev ERC1822: Universal Upgradeable Proxy Standard (UUPS) documents a method for upgradeability through a simplified * proxy whose upgrades are fully controlled by the current implementation. */ interface IERC1822Proxiable { /** * @dev Returns the storage slot that the proxiable contract assumes is being used to store the implementation * address. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. */ function proxiableUUID() external view returns (bytes32); }
node_modules/@openzeppelin/contracts/proxy/ERC1967/ERC1967Upgrade.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/ERC1967/ERC1967Upgrade.sol) pragma solidity ^0.8.2; import "../beacon/IBeacon.sol"; import "../../interfaces/IERC1967.sol"; import "../../interfaces/draft-IERC1822.sol"; import "../../utils/Address.sol"; import "../../utils/StorageSlot.sol"; /** * @dev This abstract contract provides getters and event emitting update functions for * https://eips.ethereum.org/EIPS/eip-1967[EIP1967] slots. * * _Available since v4.1._ */ abstract contract ERC1967Upgrade is IERC1967 { // This is the keccak-256 hash of "eip1967.proxy.rollback" subtracted by 1 bytes32 private constant _ROLLBACK_SLOT = 0x4910fdfa16fed3260ed0e7147f7cc6da11a60208b5b9406d12a635614ffd9143; /** * @dev Storage slot with the address of the current implementation. * This is the keccak-256 hash of "eip1967.proxy.implementation" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; /** * @dev Returns the current implementation address. */ function _getImplementation() internal view returns (address) { return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; } /** * @dev Stores a new address in the EIP1967 implementation slot. */ function _setImplementation(address newImplementation) private { require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; } /** * @dev Perform implementation upgrade * * Emits an {Upgraded} event. */ function _upgradeTo(address newImplementation) internal { _setImplementation(newImplementation); emit Upgraded(newImplementation); } /** * @dev Perform implementation upgrade with additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCall(address newImplementation, bytes memory data, bool forceCall) internal { _upgradeTo(newImplementation); if (data.length > 0 || forceCall) { Address.functionDelegateCall(newImplementation, data); } } /** * @dev Perform implementation upgrade with security checks for UUPS proxies, and additional setup call. * * Emits an {Upgraded} event. */ function _upgradeToAndCallUUPS(address newImplementation, bytes memory data, bool forceCall) internal { // Upgrades from old implementations will perform a rollback test. This test requires the new // implementation to upgrade back to the old, non-ERC1822 compliant, implementation. Removing // this special case will break upgrade paths from old UUPS implementation to new ones. if (StorageSlot.getBooleanSlot(_ROLLBACK_SLOT).value) { _setImplementation(newImplementation); } else { try IERC1822Proxiable(newImplementation).proxiableUUID() returns (bytes32 slot) { require(slot == _IMPLEMENTATION_SLOT, "ERC1967Upgrade: unsupported proxiableUUID"); } catch { revert("ERC1967Upgrade: new implementation is not UUPS"); } _upgradeToAndCall(newImplementation, data, forceCall); } } /** * @dev Storage slot with the admin of the contract. * This is the keccak-256 hash of "eip1967.proxy.admin" subtracted by 1, and is * validated in the constructor. */ bytes32 internal constant _ADMIN_SLOT = 0xb53127684a568b3173ae13b9f8a6016e243e63b6e8ee1178d6a717850b5d6103; /** * @dev Returns the current admin. */ function _getAdmin() internal view returns (address) { return StorageSlot.getAddressSlot(_ADMIN_SLOT).value; } /** * @dev Stores a new address in the EIP1967 admin slot. */ function _setAdmin(address newAdmin) private { require(newAdmin != address(0), "ERC1967: new admin is the zero address"); StorageSlot.getAddressSlot(_ADMIN_SLOT).value = newAdmin; } /** * @dev Changes the admin of the proxy. * * Emits an {AdminChanged} event. */ function _changeAdmin(address newAdmin) internal { emit AdminChanged(_getAdmin(), newAdmin); _setAdmin(newAdmin); } /** * @dev The storage slot of the UpgradeableBeacon contract which defines the implementation for this proxy. * This is bytes32(uint256(keccak256('eip1967.proxy.beacon')) - 1)) and is validated in the constructor. */ bytes32 internal constant _BEACON_SLOT = 0xa3f0ad74e5423aebfd80d3ef4346578335a9a72aeaee59ff6cb3582b35133d50; /** * @dev Returns the current beacon. */ function _getBeacon() internal view returns (address) { return StorageSlot.getAddressSlot(_BEACON_SLOT).value; } /** * @dev Stores a new beacon in the EIP1967 beacon slot. */ function _setBeacon(address newBeacon) private { require(Address.isContract(newBeacon), "ERC1967: new beacon is not a contract"); require( Address.isContract(IBeacon(newBeacon).implementation()), "ERC1967: beacon implementation is not a contract" ); StorageSlot.getAddressSlot(_BEACON_SLOT).value = newBeacon; } /** * @dev Perform beacon upgrade with additional setup call. Note: This upgrades the address of the beacon, it does * not upgrade the implementation contained in the beacon (see {UpgradeableBeacon-_setImplementation} for that). * * Emits a {BeaconUpgraded} event. */ function _upgradeBeaconToAndCall(address newBeacon, bytes memory data, bool forceCall) internal { _setBeacon(newBeacon); emit BeaconUpgraded(newBeacon); if (data.length > 0 || forceCall) { Address.functionDelegateCall(IBeacon(newBeacon).implementation(), data); } } }
node_modules/@openzeppelin/contracts/proxy/beacon/IBeacon.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (proxy/beacon/IBeacon.sol) pragma solidity ^0.8.0; /** * @dev This is the interface that {BeaconProxy} expects of its beacon. */ interface IBeacon { /** * @dev Must return an address that can be used as a delegate call target. * * {BeaconProxy} will check that this address is a contract. */ function implementation() external view returns (address); }
node_modules/@openzeppelin/contracts/proxy/utils/UUPSUpgradeable.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (proxy/utils/UUPSUpgradeable.sol) pragma solidity ^0.8.0; import "../../interfaces/draft-IERC1822.sol"; import "../ERC1967/ERC1967Upgrade.sol"; /** * @dev An upgradeability mechanism designed for UUPS proxies. The functions included here can perform an upgrade of an * {ERC1967Proxy}, when this contract is set as the implementation behind such a proxy. * * A security mechanism ensures that an upgrade does not turn off upgradeability accidentally, although this risk is * reinstated if the upgrade retains upgradeability but removes the security mechanism, e.g. by replacing * `UUPSUpgradeable` with a custom implementation of upgrades. * * The {_authorizeUpgrade} function must be overridden to include access restriction to the upgrade mechanism. * * _Available since v4.1._ */ abstract contract UUPSUpgradeable is IERC1822Proxiable, ERC1967Upgrade { /// @custom:oz-upgrades-unsafe-allow state-variable-immutable state-variable-assignment address private immutable __self = address(this); /** * @dev Check that the execution is being performed through a delegatecall call and that the execution context is * a proxy contract with an implementation (as defined in ERC1967) pointing to self. This should only be the case * for UUPS and transparent proxies that are using the current contract as their implementation. Execution of a * function through ERC1167 minimal proxies (clones) would not normally pass this test, but is not guaranteed to * fail. */ modifier onlyProxy() { require(address(this) != __self, "Function must be called through delegatecall"); require(_getImplementation() == __self, "Function must be called through active proxy"); _; } /** * @dev Check that the execution is not being performed through a delegate call. This allows a function to be * callable on the implementing contract but not through proxies. */ modifier notDelegated() { require(address(this) == __self, "UUPSUpgradeable: must not be called through delegatecall"); _; } /** * @dev Implementation of the ERC1822 {proxiableUUID} function. This returns the storage slot used by the * implementation. It is used to validate the implementation's compatibility when performing an upgrade. * * IMPORTANT: A proxy pointing at a proxiable contract should not be considered proxiable itself, because this risks * bricking a proxy that upgrades to it, by delegating to itself until out of gas. Thus it is critical that this * function revert if invoked through a proxy. This is guaranteed by the `notDelegated` modifier. */ function proxiableUUID() external view virtual override notDelegated returns (bytes32) { return _IMPLEMENTATION_SLOT; } /** * @dev Upgrade the implementation of the proxy to `newImplementation`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeTo(address newImplementation) public virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, new bytes(0), false); } /** * @dev Upgrade the implementation of the proxy to `newImplementation`, and subsequently execute the function call * encoded in `data`. * * Calls {_authorizeUpgrade}. * * Emits an {Upgraded} event. * * @custom:oz-upgrades-unsafe-allow-reachable delegatecall */ function upgradeToAndCall(address newImplementation, bytes memory data) public payable virtual onlyProxy { _authorizeUpgrade(newImplementation); _upgradeToAndCallUUPS(newImplementation, data, true); } /** * @dev Function that should revert when `msg.sender` is not authorized to upgrade the contract. Called by * {upgradeTo} and {upgradeToAndCall}. * * Normally, this function will use an xref:access.adoc[access control] modifier such as {Ownable-onlyOwner}. * * ```solidity * function _authorizeUpgrade(address) internal override onlyOwner {} * ``` */ function _authorizeUpgrade(address newImplementation) internal virtual; }
node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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); }
node_modules/@openzeppelin/contracts/token/ERC20/extensions/IERC20Permit.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.4) (token/ERC20/extensions/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. * * ==== Security Considerations * * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be * considered as an intention to spend the allowance in any specific way. The second is that because permits have * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be * generally recommended is: * * ```solidity * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public { * try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {} * doThing(..., value); * } * * function doThing(..., uint256 value) public { * token.safeTransferFrom(msg.sender, address(this), value); * ... * } * ``` * * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also * {SafeERC20-safeTransferFrom}). * * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so * contracts should have entry points that don't rely on permit. */ interface IERC20Permit { /** * @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]. * * CAUTION: See Security Considerations above. */ 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); }
node_modules/@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol) pragma solidity ^0.8.0; import "../IERC20.sol"; import "../extensions/IERC20Permit.sol"; import "../../../utils/Address.sol"; /** * @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 SafeERC20 { using Address for address; /** * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } /** * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful. */ function safeTransferFrom(IERC20 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(IERC20 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)); } /** * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 oldAllowance = token.allowance(address(this), spender); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value)); } /** * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. */ function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { unchecked { uint256 oldAllowance = token.allowance(address(this), spender); require(oldAllowance >= value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value)); } } /** * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value, * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval * to be set to zero before setting it to a non-zero value, such as USDT. */ function forceApprove(IERC20 token, address spender, uint256 value) internal { bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value); if (!_callOptionalReturnBool(token, approvalCall)) { _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0)); _callOptionalReturn(token, approvalCall); } } /** * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`. * Revert on invalid signature. */ function safePermit( IERC20Permit 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(IERC20 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"); require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation 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). * * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead. */ function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) { // 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 cannot use {Address-functionCall} here since this should return false // and not revert is the subcall reverts. (bool success, bytes memory returndata) = address(token).call(data); return success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token)); } }
node_modules/@openzeppelin/contracts/utils/Address.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (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 * * Furthermore, `isContract` will also return true if the target contract within * the same transaction is already scheduled for destruction by `SELFDESTRUCT`, * which only has an effect at the end of a transaction. * ==== * * [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://consensys.net/diligence/blog/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/v0.8.0/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); } } }
node_modules/@openzeppelin/contracts/utils/StorageSlot.sol
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/StorageSlot.sol) // This file was procedurally generated from scripts/generate/templates/StorageSlot.js. pragma solidity ^0.8.0; /** * @dev Library for reading and writing primitive types to specific storage slots. * * Storage slots are often used to avoid storage conflict when dealing with upgradeable contracts. * This library helps with reading and writing to such slots without the need for inline assembly. * * The functions in this library return Slot structs that contain a `value` member that can be used to read or write. * * Example usage to set ERC1967 implementation slot: * ```solidity * contract ERC1967 { * bytes32 internal constant _IMPLEMENTATION_SLOT = 0x360894a13ba1a3210667c828492db98dca3e2076cc3735a920a3ca505d382bbc; * * function _getImplementation() internal view returns (address) { * return StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value; * } * * function _setImplementation(address newImplementation) internal { * require(Address.isContract(newImplementation), "ERC1967: new implementation is not a contract"); * StorageSlot.getAddressSlot(_IMPLEMENTATION_SLOT).value = newImplementation; * } * } * ``` * * _Available since v4.1 for `address`, `bool`, `bytes32`, `uint256`._ * _Available since v4.9 for `string`, `bytes`._ */ library StorageSlot { struct AddressSlot { address value; } struct BooleanSlot { bool value; } struct Bytes32Slot { bytes32 value; } struct Uint256Slot { uint256 value; } struct StringSlot { string value; } struct BytesSlot { bytes value; } /** * @dev Returns an `AddressSlot` with member `value` located at `slot`. */ function getAddressSlot(bytes32 slot) internal pure returns (AddressSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BooleanSlot` with member `value` located at `slot`. */ function getBooleanSlot(bytes32 slot) internal pure returns (BooleanSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Bytes32Slot` with member `value` located at `slot`. */ function getBytes32Slot(bytes32 slot) internal pure returns (Bytes32Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `Uint256Slot` with member `value` located at `slot`. */ function getUint256Slot(bytes32 slot) internal pure returns (Uint256Slot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` with member `value` located at `slot`. */ function getStringSlot(bytes32 slot) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `StringSlot` representation of the string storage pointer `store`. */ function getStringSlot(string storage store) internal pure returns (StringSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } /** * @dev Returns an `BytesSlot` with member `value` located at `slot`. */ function getBytesSlot(bytes32 slot) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := slot } } /** * @dev Returns an `BytesSlot` representation of the bytes storage pointer `store`. */ function getBytesSlot(bytes storage store) internal pure returns (BytesSlot storage r) { /// @solidity memory-safe-assembly assembly { r.slot := store.slot } } }
node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol
// SPDX-License-Identifier: MIT // 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); }
Compiler Settings
{"viaIR":false,"remappings":["@openzeppelin/contracts-upgradeable/=node_modules/@openzeppelin/contracts-upgradeable/","@openzeppelin/contracts/=node_modules/@openzeppelin/contracts/","solady/=node_modules/solady/","forge-std/=node_modules/forge-std/","ds-test/=node_modules/ds-test/src/","p256-verifier/=node_modules/p256-verifier/","forge-safe/=node_modules/forge-safe/"],"outputSelection":{"*":{"*":["*"],"":["*"]}},"optimizer":{"runs":200,"enabled":true},"metadata":{"useLiteralContent":false,"bytecodeHash":"ipfs","appendCBOR":true},"libraries":{},"evmVersion":"cancun"}
Contract ABI
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LibL2Config.Config","components":[{"type":"uint32","name":"gasTargetPerL1Block","internalType":"uint32"},{"type":"uint8","name":"basefeeAdjustmentQuotient","internalType":"uint8"}]}],"name":"getConfig","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"impl","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"inNonReentrant","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"init","inputs":[{"type":"address","name":"_owner","internalType":"address"},{"type":"address","name":"_addressManager","internalType":"address"},{"type":"uint64","name":"_l1ChainId","internalType":"uint64"},{"type":"uint64","name":"_gasExcess","internalType":"uint64"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint64","name":"","internalType":"uint64"}],"name":"l1ChainId","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"blockHash","internalType":"bytes32"}],"name":"l2Hashes","inputs":[{"type":"uint256","name":"blockId","internalType":"uint256"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint64","name":"","internalType":"uint64"}],"name":"lastSyncedBlock","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"uint64","name":"","internalType":"uint64"}],"name":"lastUnpausedAt","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"owner","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"pause","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"paused","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address"}],"name":"pendingOwner","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"proxiableUUID","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"bytes32","name":"","internalType":"bytes32"}],"name":"publicInputHash","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"renounceOwnership","inputs":[]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address payable"}],"name":"resolve","inputs":[{"type":"uint64","name":"_chainId","internalType":"uint64"},{"type":"bytes32","name":"_name","internalType":"bytes32"},{"type":"bool","name":"_allowZeroAddress","internalType":"bool"}]},{"type":"function","stateMutability":"view","outputs":[{"type":"address","name":"","internalType":"address payable"}],"name":"resolve","inputs":[{"type":"bytes32","name":"_name","internalType":"bytes32"},{"type":"bool","name":"_allowZeroAddress","internalType":"bool"}]},{"type":"function","stateMutability":"pure","outputs":[{"type":"bool","name":"","internalType":"bool"}],"name":"skipFeeCheck","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"transferOwnership","inputs":[{"type":"address","name":"newOwner","internalType":"address"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"unpause","inputs":[]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"upgradeTo","inputs":[{"type":"address","name":"newImplementation","internalType":"address"}]},{"type":"function","stateMutability":"payable","outputs":[],"name":"upgradeToAndCall","inputs":[{"type":"address","name":"newImplementation","internalType":"address"},{"type":"bytes","name":"data","internalType":"bytes"}]},{"type":"function","stateMutability":"nonpayable","outputs":[],"name":"withdraw","inputs":[{"type":"address","name":"_token","internalType":"address"},{"type":"address","name":"_to","internalType":"address"}]}]
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