Source Code
Overview
DEV Balance
138.545987658539283385 DEV
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Multichain Info
N/A
Latest 25 from a total of 25 transactions
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Set Default Conf... | 7002897 | 217 days ago | IN | 0 DEV | 0.0000577 | ||||
Set Default Adap... | 7002897 | 217 days ago | IN | 0 DEV | 0.0000575 | ||||
Enable Supported... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Add Inbound Proo... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005676 | ||||
Add Inbound Proo... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005676 | ||||
Set Remote Uln | 7002897 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Chain Addres... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Default Conf... | 7002897 | 217 days ago | IN | 0 DEV | 0.0000577 | ||||
Set Default Adap... | 7002897 | 217 days ago | IN | 0 DEV | 0.0000575 | ||||
Enable Supported... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Add Inbound Proo... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005676 | ||||
Add Inbound Proo... | 7002897 | 217 days ago | IN | 0 DEV | 0.00005676 | ||||
Set Remote Uln | 7002895 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Chain Addres... | 7002895 | 217 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Default Conf... | 6987229 | 218 days ago | IN | 0 DEV | 0.0000577 | ||||
Set Default Adap... | 6987229 | 218 days ago | IN | 0 DEV | 0.0000575 | ||||
Set Default Adap... | 6987229 | 218 days ago | IN | 0 DEV | 0.0000575 | ||||
Enable Supported... | 6987229 | 218 days ago | IN | 0 DEV | 0.00005648 | ||||
Enable Supported... | 6987229 | 218 days ago | IN | 0 DEV | 0.00005648 | ||||
Add Inbound Proo... | 6987229 | 218 days ago | IN | 0 DEV | 0.00005676 | ||||
Add Inbound Proo... | 6987229 | 218 days ago | IN | 0 DEV | 0.00005676 | ||||
Set Remote Uln | 6987229 | 218 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Chain Addres... | 6987229 | 218 days ago | IN | 0 DEV | 0.00005648 | ||||
Set Default Conf... | 6665985 | 244 days ago | IN | 0 DEV | 0.00001442 | ||||
Set Default Adap... | 6665985 | 244 days ago | IN | 0 DEV | 0.0000191 |
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Contract Name:
UltraLightNodeV2
Compiler Version
v0.7.6+commit.7338295f
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; pragma abicoder v2; import "@openzeppelin/contracts/access/Ownable.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; import "@openzeppelin/contracts/utils/ReentrancyGuard.sol"; import "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import "@openzeppelin/contracts/token/ERC20/SafeERC20.sol"; import "./interfaces/ILayerZeroValidationLibrary.sol"; import "./interfaces/ILayerZeroReceiver.sol"; import "./interfaces/ILayerZeroTreasury.sol"; import "./interfaces/ILayerZeroEndpoint.sol"; // v2 import "./interfaces/ILayerZeroMessagingLibraryV2.sol"; import "./interfaces/ILayerZeroOracleV2.sol"; import "./interfaces/ILayerZeroUltraLightNodeV2.sol"; import "./interfaces/ILayerZeroRelayerV2.sol"; import "./NonceContract.sol"; contract UltraLightNodeV2 is ILayerZeroMessagingLibraryV2, ILayerZeroUltraLightNodeV2, ReentrancyGuard, Ownable { using SafeERC20 for IERC20; using SafeMath for uint; // Application config uint public constant CONFIG_TYPE_INBOUND_PROOF_LIBRARY_VERSION = 1; uint public constant CONFIG_TYPE_INBOUND_BLOCK_CONFIRMATIONS = 2; uint public constant CONFIG_TYPE_RELAYER = 3; uint public constant CONFIG_TYPE_OUTBOUND_PROOF_TYPE = 4; uint public constant CONFIG_TYPE_OUTBOUND_BLOCK_CONFIRMATIONS = 5; uint public constant CONFIG_TYPE_ORACLE = 6; // Token and Contracts IERC20 public layerZeroToken; ILayerZeroTreasury public treasuryContract; mapping(address => uint) public nativeFees; uint public treasuryZROFees; // User Application mapping(address => mapping(uint16 => ApplicationConfiguration)) public appConfig; // app address => chainId => config mapping(uint16 => ApplicationConfiguration) public defaultAppConfig; // default UA settings if no version specified mapping(uint16 => mapping(uint16 => bytes)) public defaultAdapterParams; // Validation mapping(uint16 => mapping(uint16 => address)) public inboundProofLibrary; // chainId => library Id => inboundProofLibrary contract mapping(uint16 => uint16) public maxInboundProofLibrary; // chainId => inboundProofLibrary mapping(uint16 => mapping(uint16 => bool)) public supportedOutboundProof; // chainId => outboundProofType => enabled mapping(uint16 => uint) public chainAddressSizeMap; mapping(address => mapping(uint16 => mapping(bytes32 => mapping(bytes32 => uint)))) public hashLookup; //[oracle][srcChainId][blockhash][datahash] -> confirmation mapping(uint16 => bytes32) public ulnLookup; // remote ulns ILayerZeroEndpoint public immutable endpoint; uint16 public immutable localChainId; NonceContract public immutable nonceContract; constructor(address _endpoint, address _nonceContract, uint16 _localChainId) { require(_endpoint != address(0x0), "LayerZero: endpoint cannot be zero address"); require(_nonceContract != address(0x0), "LayerZero: nonceContract cannot be zero address"); ILayerZeroEndpoint lzEndpoint = ILayerZeroEndpoint(_endpoint); localChainId = _localChainId; endpoint = lzEndpoint; nonceContract = NonceContract(_nonceContract); } // only the endpoint can call SEND() and setConfig() modifier onlyEndpoint() { require(address(endpoint) == msg.sender, "LayerZero: only endpoint"); _; } //---------------------------------------------------------------------------------- // PROTOCOL function validateTransactionProof(uint16 _srcChainId, address _dstAddress, uint _gasLimit, bytes32 _lookupHash, bytes32 _blockData, bytes calldata _transactionProof) external override { // retrieve UA's configuration using the _dstAddress from arguments. ApplicationConfiguration memory uaConfig = _getAppConfig(_srcChainId, _dstAddress); // assert that the caller == UA's relayer require(uaConfig.relayer == msg.sender, "LayerZero: invalid relayer"); LayerZeroPacket.Packet memory _packet; uint remoteAddressSize = chainAddressSizeMap[_srcChainId]; require(remoteAddressSize != 0, "LayerZero: incorrect remote address size"); { // assert that the data submitted by UA's oracle have no fewer confirmations than UA's configuration uint storedConfirmations = hashLookup[uaConfig.oracle][_srcChainId][_lookupHash][_blockData]; require(storedConfirmations > 0 && storedConfirmations >= uaConfig.inboundBlockConfirmations, "LayerZero: not enough block confirmations"); // decode address inboundProofLib = inboundProofLibrary[_srcChainId][uaConfig.inboundProofLibraryVersion]; _packet = ILayerZeroValidationLibrary(inboundProofLib).validateProof(_blockData, _transactionProof, remoteAddressSize); } // packet content assertion require(ulnLookup[_srcChainId] == _packet.ulnAddress && _packet.ulnAddress != bytes32(0), "LayerZero: invalid _packet.ulnAddress"); require(_packet.srcChainId == _srcChainId, "LayerZero: invalid srcChain Id"); // failsafe because the remoteAddress size being passed into validateProof trims the address this should not hit require(_packet.srcAddress.length == remoteAddressSize, "LayerZero: invalid srcAddress size"); require(_packet.dstChainId == localChainId, "LayerZero: invalid dstChain Id"); require(_packet.dstAddress == _dstAddress, "LayerZero: invalid dstAddress"); // if the dst is not a contract, then emit and return early. This will break inbound nonces, but this particular // path is already broken and wont ever be able to deliver anyways if (!_isContract(_dstAddress)) { emit InvalidDst(_packet.srcChainId, _packet.srcAddress, _packet.dstAddress, _packet.nonce, keccak256(_packet.payload)); return; } bytes memory pathData = abi.encodePacked(_packet.srcAddress, _packet.dstAddress); emit PacketReceived(_packet.srcChainId, _packet.srcAddress, _packet.dstAddress, _packet.nonce, keccak256(_packet.payload)); endpoint.receivePayload(_srcChainId, pathData, _dstAddress, _packet.nonce, _gasLimit, _packet.payload); } function send(address _ua, uint64, uint16 _dstChainId, bytes calldata _path, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable override onlyEndpoint { address ua = _ua; uint16 dstChainId = _dstChainId; require(ulnLookup[dstChainId] != bytes32(0), "LayerZero: dstChainId does not exist"); bytes memory dstAddress; uint64 nonce; // code block for solving 'Stack Too Deep' { uint chainAddressSize = chainAddressSizeMap[dstChainId]; // path = remoteAddress + localAddress require(chainAddressSize != 0 && _path.length == 20 + chainAddressSize, "LayerZero: incorrect remote address size"); address srcInPath; bytes memory path = _path; // copy to memory assembly { srcInPath := mload(add(add(path, 20), chainAddressSize)) // chainAddressSize + 20 } require(ua == srcInPath, "LayerZero: wrong path data"); dstAddress = _path[0:chainAddressSize]; nonce = nonceContract.increment(dstChainId, ua, path); } bytes memory payload = _payload; ApplicationConfiguration memory uaConfig = _getAppConfig(dstChainId, ua); // compute all the fees uint relayerFee = _handleRelayer(dstChainId, uaConfig, ua, payload.length, _adapterParams); uint oracleFee = _handleOracle(dstChainId, uaConfig, ua); uint nativeProtocolFee = _handleProtocolFee(relayerFee, oracleFee, ua, _zroPaymentAddress); // total native fee, does not include ZRO protocol fee uint totalNativeFee = relayerFee.add(oracleFee).add(nativeProtocolFee); // assert the user has attached enough native token for this address require(totalNativeFee <= msg.value, "LayerZero: not enough native for fees"); // refund if they send too much uint amount = msg.value.sub(totalNativeFee); if (amount > 0) { (bool success, ) = _refundAddress.call{value: amount}(""); require(success, "LayerZero: failed to refund"); } // emit the data packet bytes memory encodedPayload = abi.encodePacked(nonce, localChainId, ua, dstChainId, dstAddress, payload); emit Packet(encodedPayload); } function _handleRelayer(uint16 _dstChainId, ApplicationConfiguration memory _uaConfig, address _ua, uint _payloadSize, bytes memory _adapterParams) internal returns (uint relayerFee) { if (_adapterParams.length == 0) { _adapterParams = defaultAdapterParams[_dstChainId][_uaConfig.outboundProofType]; } address relayerAddress = _uaConfig.relayer; ILayerZeroRelayerV2 relayer = ILayerZeroRelayerV2(relayerAddress); relayerFee = relayer.assignJob(_dstChainId, _uaConfig.outboundProofType, _ua, _payloadSize, _adapterParams); _creditNativeFee(relayerAddress, relayerFee); // emit the param events emit RelayerParams(_adapterParams, _uaConfig.outboundProofType); } function _handleOracle(uint16 _dstChainId, ApplicationConfiguration memory _uaConfig, address _ua) internal returns (uint oracleFee) { address oracleAddress = _uaConfig.oracle; oracleFee = ILayerZeroOracleV2(oracleAddress).assignJob(_dstChainId, _uaConfig.outboundProofType, _uaConfig.outboundBlockConfirmations, _ua); _creditNativeFee(oracleAddress, oracleFee); } function _handleProtocolFee(uint _relayerFee, uint _oracleFee, address _ua, address _zroPaymentAddress) internal returns (uint protocolNativeFee) { // if no ZRO token or not specifying a payment address, pay in native token bool payInNative = _zroPaymentAddress == address(0x0) || address(layerZeroToken) == address(0x0); uint protocolFee = treasuryContract.getFees(!payInNative, _relayerFee, _oracleFee); if (protocolFee > 0) { if (payInNative) { address treasuryAddress = address(treasuryContract); _creditNativeFee(treasuryAddress, protocolFee); protocolNativeFee = protocolFee; } else { // zro payment address must equal the ua or the tx.origin otherwise the transaction reverts require(_zroPaymentAddress == _ua || _zroPaymentAddress == tx.origin, "LayerZero: must be paid by sender or origin"); // transfer the LayerZero token to this contract from the payee layerZeroToken.safeTransferFrom(_zroPaymentAddress, address(this), protocolFee); treasuryZROFees = treasuryZROFees.add(protocolFee); } } } function _creditNativeFee(address _receiver, uint _amount) internal { nativeFees[_receiver] = nativeFees[_receiver].add(_amount); } // Can be called by any address to update a block header // can only upload new block data or the same block data with more confirmations function updateHash(uint16 _srcChainId, bytes32 _lookupHash, uint _confirmations, bytes32 _blockData) external override { uint storedConfirmations = hashLookup[msg.sender][_srcChainId][_lookupHash][_blockData]; // if it has a record, requires a larger confirmation. require(storedConfirmations < _confirmations, "LayerZero: oracle data can only update if it has more confirmations"); // set the new information into storage hashLookup[msg.sender][_srcChainId][_lookupHash][_blockData] = _confirmations; emit HashReceived(_srcChainId, msg.sender, _lookupHash, _blockData, _confirmations); } //---------------------------------------------------------------------------------- // Other Library Interfaces // default to DEFAULT setting if ZERO value function getAppConfig(uint16 _remoteChainId, address _ua) external view override returns (ApplicationConfiguration memory) { return _getAppConfig(_remoteChainId, _ua); } function _getAppConfig(uint16 _remoteChainId, address _ua) internal view returns (ApplicationConfiguration memory) { ApplicationConfiguration memory config = appConfig[_ua][_remoteChainId]; ApplicationConfiguration storage defaultConfig = defaultAppConfig[_remoteChainId]; if (config.inboundProofLibraryVersion == 0) { config.inboundProofLibraryVersion = defaultConfig.inboundProofLibraryVersion; } if (config.inboundBlockConfirmations == 0) { config.inboundBlockConfirmations = defaultConfig.inboundBlockConfirmations; } if (config.relayer == address(0x0)) { config.relayer = defaultConfig.relayer; } if (config.outboundProofType == 0) { config.outboundProofType = defaultConfig.outboundProofType; } if (config.outboundBlockConfirmations == 0) { config.outboundBlockConfirmations = defaultConfig.outboundBlockConfirmations; } if (config.oracle == address(0x0)) { config.oracle = defaultConfig.oracle; } return config; } function setConfig(uint16 _remoteChainId, address _ua, uint _configType, bytes calldata _config) external override onlyEndpoint { ApplicationConfiguration storage uaConfig = appConfig[_ua][_remoteChainId]; if (_configType == CONFIG_TYPE_INBOUND_PROOF_LIBRARY_VERSION) { uint16 inboundProofLibraryVersion = abi.decode(_config, (uint16)); require(inboundProofLibraryVersion <= maxInboundProofLibrary[_remoteChainId], "LayerZero: invalid inbound proof library version"); uaConfig.inboundProofLibraryVersion = inboundProofLibraryVersion; } else if (_configType == CONFIG_TYPE_INBOUND_BLOCK_CONFIRMATIONS) { uint64 blockConfirmations = abi.decode(_config, (uint64)); uaConfig.inboundBlockConfirmations = blockConfirmations; } else if (_configType == CONFIG_TYPE_RELAYER) { address relayer = abi.decode(_config, (address)); uaConfig.relayer = relayer; } else if (_configType == CONFIG_TYPE_OUTBOUND_PROOF_TYPE) { uint16 outboundProofType = abi.decode(_config, (uint16)); require(supportedOutboundProof[_remoteChainId][outboundProofType] || outboundProofType == 0, "LayerZero: invalid outbound proof type"); uaConfig.outboundProofType = outboundProofType; } else if (_configType == CONFIG_TYPE_OUTBOUND_BLOCK_CONFIRMATIONS) { uint64 blockConfirmations = abi.decode(_config, (uint64)); uaConfig.outboundBlockConfirmations = blockConfirmations; } else if (_configType == CONFIG_TYPE_ORACLE) { address oracle = abi.decode(_config, (address)); uaConfig.oracle = oracle; } else { revert("LayerZero: Invalid config type"); } emit AppConfigUpdated(_ua, _configType, _config); } function getConfig(uint16 _remoteChainId, address _ua, uint _configType) external view override returns (bytes memory) { ApplicationConfiguration storage uaConfig = appConfig[_ua][_remoteChainId]; if (_configType == CONFIG_TYPE_INBOUND_PROOF_LIBRARY_VERSION) { if (uaConfig.inboundProofLibraryVersion == 0) { return abi.encode(defaultAppConfig[_remoteChainId].inboundProofLibraryVersion); } return abi.encode(uaConfig.inboundProofLibraryVersion); } else if (_configType == CONFIG_TYPE_INBOUND_BLOCK_CONFIRMATIONS) { if (uaConfig.inboundBlockConfirmations == 0) { return abi.encode(defaultAppConfig[_remoteChainId].inboundBlockConfirmations); } return abi.encode(uaConfig.inboundBlockConfirmations); } else if (_configType == CONFIG_TYPE_RELAYER) { if (uaConfig.relayer == address(0x0)) { return abi.encode(defaultAppConfig[_remoteChainId].relayer); } return abi.encode(uaConfig.relayer); } else if (_configType == CONFIG_TYPE_OUTBOUND_PROOF_TYPE) { if (uaConfig.outboundProofType == 0) { return abi.encode(defaultAppConfig[_remoteChainId].outboundProofType); } return abi.encode(uaConfig.outboundProofType); } else if (_configType == CONFIG_TYPE_OUTBOUND_BLOCK_CONFIRMATIONS) { if (uaConfig.outboundBlockConfirmations == 0) { return abi.encode(defaultAppConfig[_remoteChainId].outboundBlockConfirmations); } return abi.encode(uaConfig.outboundBlockConfirmations); } else if (_configType == CONFIG_TYPE_ORACLE) { if (uaConfig.oracle == address(0x0)) { return abi.encode(defaultAppConfig[_remoteChainId].oracle); } return abi.encode(uaConfig.oracle); } else { revert("LayerZero: Invalid config type"); } } // returns the native fee the UA pays to cover fees function estimateFees(uint16 _dstChainId, address _ua, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParams) external view override returns (uint nativeFee, uint zroFee) { ApplicationConfiguration memory uaConfig = _getAppConfig(_dstChainId, _ua); // Relayer Fee bytes memory adapterParams; if (_adapterParams.length > 0) { adapterParams = _adapterParams; } else { adapterParams = defaultAdapterParams[_dstChainId][uaConfig.outboundProofType]; } uint relayerFee = ILayerZeroRelayerV2(uaConfig.relayer).getFee(_dstChainId, uaConfig.outboundProofType, _ua, _payload.length, adapterParams); // Oracle Fee address ua = _ua; // stack too deep uint oracleFee = ILayerZeroOracleV2(uaConfig.oracle).getFee(_dstChainId, uaConfig.outboundProofType, uaConfig.outboundBlockConfirmations, ua); // LayerZero Fee uint protocolFee = treasuryContract.getFees(_payInZRO, relayerFee, oracleFee); _payInZRO ? zroFee = protocolFee : nativeFee = protocolFee; // return the sum of fees nativeFee = nativeFee.add(relayerFee).add(oracleFee); } //--------------------------------------------------------------------------- // Claim Fees // universal withdraw ZRO token function function withdrawZRO(address _to, uint _amount) external override nonReentrant { require(msg.sender == address(treasuryContract), "LayerZero: only treasury"); treasuryZROFees = treasuryZROFees.sub(_amount); layerZeroToken.safeTransfer(_to, _amount); emit WithdrawZRO(msg.sender, _to, _amount); } // universal withdraw native token function. // the source contract should perform all the authentication control function withdrawNative(address payable _to, uint _amount) external override nonReentrant { require(_to != address(0x0), "LayerZero: _to cannot be zero address"); nativeFees[msg.sender] = nativeFees[msg.sender].sub(_amount); (bool success, ) = _to.call{value: _amount}(""); require(success, "LayerZero: withdraw failed"); emit WithdrawNative(msg.sender, _to, _amount); } //--------------------------------------------------------------------------- // Owner calls, configuration only. function setLayerZeroToken(address _layerZeroToken) external onlyOwner { require(_layerZeroToken != address(0x0), "LayerZero: _layerZeroToken cannot be zero address"); layerZeroToken = IERC20(_layerZeroToken); emit SetLayerZeroToken(_layerZeroToken); } function setTreasury(address _treasury) external onlyOwner { require(_treasury != address(0x0), "LayerZero: treasury cannot be zero address"); treasuryContract = ILayerZeroTreasury(_treasury); emit SetTreasury(_treasury); } function addInboundProofLibraryForChain(uint16 _chainId, address _library) external onlyOwner { require(_library != address(0x0), "LayerZero: library cannot be zero address"); uint16 libId = maxInboundProofLibrary[_chainId]; require(libId < 65535, "LayerZero: can not add new library"); maxInboundProofLibrary[_chainId] = ++libId; inboundProofLibrary[_chainId][libId] = _library; emit AddInboundProofLibraryForChain(_chainId, _library); } function enableSupportedOutboundProof(uint16 _chainId, uint16 _proofType) external onlyOwner { supportedOutboundProof[_chainId][_proofType] = true; emit EnableSupportedOutboundProof(_chainId, _proofType); } function setDefaultConfigForChainId(uint16 _chainId, uint16 _inboundProofLibraryVersion, uint64 _inboundBlockConfirmations, address _relayer, uint16 _outboundProofType, uint64 _outboundBlockConfirmations, address _oracle) external onlyOwner { require(_inboundProofLibraryVersion <= maxInboundProofLibrary[_chainId] && _inboundProofLibraryVersion > 0, "LayerZero: invalid inbound proof library version"); require(_inboundBlockConfirmations > 0, "LayerZero: invalid inbound block confirmation"); require(_relayer != address(0x0), "LayerZero: invalid relayer address"); require(supportedOutboundProof[_chainId][_outboundProofType], "LayerZero: invalid outbound proof type"); require(_outboundBlockConfirmations > 0, "LayerZero: invalid outbound block confirmation"); require(_oracle != address(0x0), "LayerZero: invalid oracle address"); defaultAppConfig[_chainId] = ApplicationConfiguration(_inboundProofLibraryVersion, _inboundBlockConfirmations, _relayer, _outboundProofType, _outboundBlockConfirmations, _oracle); emit SetDefaultConfigForChainId(_chainId, _inboundProofLibraryVersion, _inboundBlockConfirmations, _relayer, _outboundProofType, _outboundBlockConfirmations, _oracle); } function setDefaultAdapterParamsForChainId(uint16 _chainId, uint16 _proofType, bytes calldata _adapterParams) external onlyOwner { defaultAdapterParams[_chainId][_proofType] = _adapterParams; emit SetDefaultAdapterParamsForChainId(_chainId, _proofType, _adapterParams); } function setRemoteUln(uint16 _remoteChainId, bytes32 _remoteUln) external onlyOwner { require(ulnLookup[_remoteChainId] == bytes32(0), "LayerZero: remote uln already set"); ulnLookup[_remoteChainId] = _remoteUln; emit SetRemoteUln(_remoteChainId, _remoteUln); } function setChainAddressSize(uint16 _chainId, uint _size) external onlyOwner { require(chainAddressSizeMap[_chainId] == 0, "LayerZero: remote chain address size already set"); chainAddressSizeMap[_chainId] = _size; emit SetChainAddressSize(_chainId, _size); } //---------------------------------------------------------------------------------- // view functions function accruedNativeFee(address _address) external view override returns (uint) { return nativeFees[_address]; } function getOutboundNonce(uint16 _chainId, bytes calldata _path) external view override returns (uint64) { return nonceContract.outboundNonce(_chainId, _path); } function _isContract(address addr) internal view returns (bool) { uint size; assembly { size := extcodesize(addr) } return size != 0; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "../utils/Context.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 Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor () { address msgSender = _msgSender(); _owner = msgSender; emit OwnershipTransferred(address(0), msgSender); } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { require(owner() == _msgSender(), "Ownable: caller is not the owner"); _; } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions anymore. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby removing any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { emit OwnershipTransferred(_owner, address(0)); _owner = 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"); emit OwnershipTransferred(_owner, newOwner); _owner = newOwner; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Wrappers over Solidity's arithmetic operations with added overflow * checks. * * Arithmetic operations in Solidity wrap on overflow. This can easily result * in bugs, because programmers usually assume that an overflow raises an * error, which is the standard behavior in high level programming languages. * `SafeMath` restores this intuition by reverting the transaction when an * operation overflows. * * Using this library instead of the unchecked operations eliminates an entire * class of bugs, so it's recommended to use it always. */ library SafeMath { /** * @dev Returns the addition of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryAdd(uint256 a, uint256 b) internal pure returns (bool, uint256) { uint256 c = a + b; if (c < a) return (false, 0); return (true, c); } /** * @dev Returns the substraction of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function trySub(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b > a) return (false, 0); return (true, a - b); } /** * @dev Returns the multiplication of two unsigned integers, with an overflow flag. * * _Available since v3.4._ */ function tryMul(uint256 a, uint256 b) internal pure returns (bool, uint256) { // Gas optimization: this is cheaper than requiring 'a' not being zero, but the // benefit is lost if 'b' is also tested. // See: https://github.com/OpenZeppelin/openzeppelin-contracts/pull/522 if (a == 0) return (true, 0); uint256 c = a * b; if (c / a != b) return (false, 0); return (true, c); } /** * @dev Returns the division of two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryDiv(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a / b); } /** * @dev Returns the remainder of dividing two unsigned integers, with a division by zero flag. * * _Available since v3.4._ */ function tryMod(uint256 a, uint256 b) internal pure returns (bool, uint256) { if (b == 0) return (false, 0); return (true, a % b); } /** * @dev Returns the addition of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `+` operator. * * Requirements: * * - Addition cannot overflow. */ function add(uint256 a, uint256 b) internal pure returns (uint256) { uint256 c = a + b; require(c >= a, "SafeMath: addition overflow"); return c; } /** * @dev Returns the subtraction of two unsigned integers, reverting on * overflow (when the result is negative). * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b) internal pure returns (uint256) { require(b <= a, "SafeMath: subtraction overflow"); return a - b; } /** * @dev Returns the multiplication of two unsigned integers, reverting on * overflow. * * Counterpart to Solidity's `*` operator. * * Requirements: * * - Multiplication cannot overflow. */ function mul(uint256 a, uint256 b) internal pure returns (uint256) { if (a == 0) return 0; uint256 c = a * b; require(c / a == b, "SafeMath: multiplication overflow"); return c; } /** * @dev Returns the integer division of two unsigned integers, reverting on * division by zero. The result is rounded towards zero. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: division by zero"); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting when dividing by zero. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b) internal pure returns (uint256) { require(b > 0, "SafeMath: modulo by zero"); return a % b; } /** * @dev Returns the subtraction of two unsigned integers, reverting with custom message on * overflow (when the result is negative). * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {trySub}. * * Counterpart to Solidity's `-` operator. * * Requirements: * * - Subtraction cannot overflow. */ function sub(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b <= a, errorMessage); return a - b; } /** * @dev Returns the integer division of two unsigned integers, reverting with custom message on * division by zero. The result is rounded towards zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryDiv}. * * Counterpart to Solidity's `/` operator. Note: this function uses a * `revert` opcode (which leaves remaining gas untouched) while Solidity * uses an invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function div(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a / b; } /** * @dev Returns the remainder of dividing two unsigned integers. (unsigned integer modulo), * reverting with custom message when dividing by zero. * * CAUTION: This function is deprecated because it requires allocating memory for the error * message unnecessarily. For custom revert reasons use {tryMod}. * * Counterpart to Solidity's `%` operator. This function uses a `revert` * opcode (which leaves remaining gas untouched) while Solidity uses an * invalid opcode to revert (consuming all remaining gas). * * Requirements: * * - The divisor cannot be zero. */ function mod(uint256 a, uint256 b, string memory errorMessage) internal pure returns (uint256) { require(b > 0, errorMessage); return a % b; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @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 `recipient`. * * Returns a boolean value indicating whether the operation succeeded. * * Emits a {Transfer} event. */ function transfer(address recipient, 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 `sender` to `recipient` 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 sender, address recipient, uint256 amount) external returns (bool); /** * @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); }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; import "./IERC20.sol"; import "../../math/SafeMath.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 SafeMath for uint256; using Address for address; function safeTransfer(IERC20 token, address to, uint256 value) internal { _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value)); } 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' // solhint-disable-next-line max-line-length require((value == 0) || (token.allowance(address(this), spender) == 0), "SafeERC20: approve from non-zero to non-zero allowance" ); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value)); } function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).add(value); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal { uint256 newAllowance = token.allowance(address(this), spender).sub(value, "SafeERC20: decreased allowance below zero"); _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance)); } /** * @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"); if (returndata.length > 0) { // Return data is optional // solhint-disable-next-line max-line-length require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed"); } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @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 * ==== */ function isContract(address account) internal view returns (bool) { // This method relies on extcodesize, which returns 0 for contracts in // construction, since the code is only stored at the end of the // constructor execution. uint256 size; // solhint-disable-next-line no-inline-assembly assembly { size := extcodesize(account) } return size > 0; } /** * @dev Replacement for Solidity's `transfer`: sends `amount` wei to * `recipient`, forwarding all available gas and reverting on errors. * * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost * of certain opcodes, possibly making contracts go over the 2300 gas limit * imposed by `transfer`, making them unable to receive funds via * `transfer`. {sendValue} removes this limitation. * * https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more]. * * IMPORTANT: because control is transferred to `recipient`, care must be * taken to not create reentrancy vulnerabilities. Consider using * {ReentrancyGuard} or the * https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern]. */ function sendValue(address payable recipient, uint256 amount) internal { require(address(this).balance >= amount, "Address: insufficient balance"); // solhint-disable-next-line avoid-low-level-calls, avoid-call-value (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 functionCall(target, data, "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"); require(isContract(target), "Address: call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.call{ value: value }(data); return _verifyCallResult(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) { require(isContract(target), "Address: static call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.staticcall(data); return _verifyCallResult(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) { require(isContract(target), "Address: delegate call to non-contract"); // solhint-disable-next-line avoid-low-level-calls (bool success, bytes memory returndata) = target.delegatecall(data); return _verifyCallResult(success, returndata, errorMessage); } function _verifyCallResult(bool success, bytes memory returndata, string memory errorMessage) private pure returns(bytes memory) { if (success) { return returndata; } else { // 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 // solhint-disable-next-line no-inline-assembly assembly { let returndata_size := mload(returndata) revert(add(32, returndata), returndata_size) } } else { revert(errorMessage); } } } }
// SPDX-License-Identifier: MIT pragma solidity >=0.6.0 <0.8.0; /* * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with GSN meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address payable) { return msg.sender; } function _msgData() internal view virtual returns (bytes memory) { this; // silence state mutability warning without generating bytecode - see https://github.com/ethereum/solidity/issues/2691 return msg.data; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.7.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor () { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and make it call a * `private` function that does the actual work. */ modifier nonReentrant() { // On the first call to nonReentrant, _notEntered will be true require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; _; // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "./interfaces/ILayerZeroEndpoint.sol"; contract NonceContract { ILayerZeroEndpoint public immutable endpoint; // outboundNonce = [dstChainId][remoteAddress + localAddress] mapping(uint16 => mapping(bytes => uint64)) public outboundNonce; constructor(address _endpoint) { endpoint = ILayerZeroEndpoint(_endpoint); } function increment(uint16 _chainId, address _ua, bytes calldata _path) external returns (uint64) { require(endpoint.getSendLibraryAddress(_ua) == msg.sender, "NonceContract: msg.sender is not valid sendlibrary"); return ++outboundNonce[_chainId][_path]; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; import "./ILayerZeroUserApplicationConfig.sol"; interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig { // @notice send a LayerZero message to the specified address at a LayerZero endpoint. // @param _dstChainId - the destination chain identifier // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains // @param _payload - a custom bytes payload to send to the destination contract // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; // @notice used by the messaging library to publish verified payload // @param _srcChainId - the source chain identifier // @param _srcAddress - the source contract (as bytes) at the source chain // @param _dstAddress - the address on destination chain // @param _nonce - the unbound message ordering nonce // @param _gasLimit - the gas limit for external contract execution // @param _payload - verified payload to send to the destination contract function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external; // @notice get the inboundNonce of a receiver from a source chain which could be EVM or non-EVM chain // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64); // @notice get the outboundNonce from this source chain which, consequently, is always an EVM // @param _srcAddress - the source chain contract address function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64); // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery // @param _dstChainId - the destination chain identifier // @param _userApplication - the user app address on this EVM chain // @param _payload - the custom message to send over LayerZero // @param _payInZRO - if false, user app pays the protocol fee in native token // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee); // @notice get this Endpoint's immutable source identifier function getChainId() external view returns (uint16); // @notice the interface to retry failed message on this Endpoint destination // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address // @param _payload - the payload to be retried function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external; // @notice query if any STORED payload (message blocking) at the endpoint. // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool); // @notice query if the _libraryAddress is valid for sending msgs. // @param _userApplication - the user app address on this EVM chain function getSendLibraryAddress(address _userApplication) external view returns (address); // @notice query if the _libraryAddress is valid for receiving msgs. // @param _userApplication - the user app address on this EVM chain function getReceiveLibraryAddress(address _userApplication) external view returns (address); // @notice query if the non-reentrancy guard for send() is on // @return true if the guard is on. false otherwise function isSendingPayload() external view returns (bool); // @notice query if the non-reentrancy guard for receive() is on // @return true if the guard is on. false otherwise function isReceivingPayload() external view returns (bool); // @notice get the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _userApplication - the contract address of the user application // @param _configType - type of configuration. every messaging library has its own convention. function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory); // @notice get the send() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getSendVersion(address _userApplication) external view returns (uint16); // @notice get the lzReceive() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getReceiveVersion(address _userApplication) external view returns (uint16); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; import "./ILayerZeroUserApplicationConfig.sol"; interface ILayerZeroMessagingLibrary { // send(), messages will be inflight. function send(address _userApplication, uint64 _lastNonce, uint16 _chainId, bytes calldata _destination, bytes calldata _payload, address payable refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; // estimate native fee at the send side function estimateFees(uint16 _chainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee); //--------------------------------------------------------------------------- // setConfig / getConfig are User Application (UA) functions to specify Oracle, Relayer, blockConfirmations, libraryVersion function setConfig(uint16 _chainId, address _userApplication, uint _configType, bytes calldata _config) external; function getConfig(uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; import "./ILayerZeroUserApplicationConfig.sol"; import "./ILayerZeroMessagingLibrary.sol"; interface ILayerZeroMessagingLibraryV2 is ILayerZeroMessagingLibrary { function getOutboundNonce(uint16 _chainId, bytes calldata _path) external view returns (uint64); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; interface ILayerZeroOracleV2 { // @notice query price and assign jobs at the same time // @param _dstChainId - the destination endpoint identifier // @param _outboundProofType - the proof type identifier to specify proof to be relayed // @param _outboundBlockConfirmation - block confirmation delay before relaying blocks // @param _userApplication - the source sending contract address function assignJob(uint16 _dstChainId, uint16 _outboundProofType, uint64 _outboundBlockConfirmation, address _userApplication) external returns (uint price); // @notice query the oracle price for relaying block information to the destination chain // @param _dstChainId the destination endpoint identifier // @param _outboundProofType the proof type identifier to specify the data to be relayed // @param _outboundBlockConfirmation - block confirmation delay before relaying blocks // @param _userApplication - the source sending contract address function getFee(uint16 _dstChainId, uint16 _outboundProofType, uint64 _outboundBlockConfirmation, address _userApplication) external view returns (uint price); // @notice withdraw the accrued fee in ultra light node // @param _to - the fee receiver // @param _amount - the withdrawal amount function withdrawFee(address payable _to, uint _amount) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; interface ILayerZeroReceiver { // @notice LayerZero endpoint will invoke this function to deliver the message on the destination // @param _srcChainId - the source endpoint identifier // @param _srcAddress - the source sending contract address from the source chain // @param _nonce - the ordered message nonce // @param _payload - the signed payload is the UA bytes has encoded to be sent function lzReceive(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; interface ILayerZeroRelayerV2 { // @notice query price and assign jobs at the same time // @param _dstChainId - the destination endpoint identifier // @param _outboundProofType - the proof type identifier to specify proof to be relayed // @param _userApplication - the source sending contract address. relayers may apply price discrimination to user apps // @param _payloadSize - the length of the payload. it is an indicator of gas usage for relaying cross-chain messages // @param _adapterParams - optional parameters for extra service plugins, e.g. sending dust tokens at the destination chain function assignJob(uint16 _dstChainId, uint16 _outboundProofType, address _userApplication, uint _payloadSize, bytes calldata _adapterParams) external returns (uint price); // @notice query the relayer price for relaying the payload and its proof to the destination chain // @param _dstChainId - the destination endpoint identifier // @param _outboundProofType - the proof type identifier to specify proof to be relayed // @param _userApplication - the source sending contract address. relayers may apply price discrimination to user apps // @param _payloadSize - the length of the payload. it is an indicator of gas usage for relaying cross-chain messages // @param _adapterParams - optional parameters for extra service plugins, e.g. sending dust tokens at the destination chain function getFee(uint16 _dstChainId, uint16 _outboundProofType, address _userApplication, uint _payloadSize, bytes calldata _adapterParams) external view returns (uint price); // @notice withdraw the accrued fee in ultra light node // @param _to - the fee receiver // @param _amount - the withdrawal amount function withdrawFee(address payable _to, uint _amount) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; interface ILayerZeroTreasury { function getFees(bool payInZro, uint relayerFee, uint oracleFee) external view returns (uint); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; pragma abicoder v2; interface ILayerZeroUltraLightNodeV2 { // Relayer functions function validateTransactionProof(uint16 _srcChainId, address _dstAddress, uint _gasLimit, bytes32 _lookupHash, bytes32 _blockData, bytes calldata _transactionProof) external; // an Oracle delivers the block data using updateHash() function updateHash(uint16 _srcChainId, bytes32 _lookupHash, uint _confirmations, bytes32 _blockData) external; // can only withdraw the receivable of the msg.sender function withdrawNative(address payable _to, uint _amount) external; function withdrawZRO(address _to, uint _amount) external; // view functions function getAppConfig(uint16 _remoteChainId, address _userApplicationAddress) external view returns (ApplicationConfiguration memory); function accruedNativeFee(address _address) external view returns (uint); struct ApplicationConfiguration { uint16 inboundProofLibraryVersion; uint64 inboundBlockConfirmations; address relayer; uint16 outboundProofType; uint64 outboundBlockConfirmations; address oracle; } event HashReceived(uint16 indexed srcChainId, address indexed oracle, bytes32 lookupHash, bytes32 blockData, uint confirmations); event RelayerParams(bytes adapterParams, uint16 outboundProofType); event Packet(bytes payload); event InvalidDst(uint16 indexed srcChainId, bytes srcAddress, address indexed dstAddress, uint64 nonce, bytes32 payloadHash); event PacketReceived(uint16 indexed srcChainId, bytes srcAddress, address indexed dstAddress, uint64 nonce, bytes32 payloadHash); event AppConfigUpdated(address indexed userApplication, uint indexed configType, bytes newConfig); event AddInboundProofLibraryForChain(uint16 indexed chainId, address lib); event EnableSupportedOutboundProof(uint16 indexed chainId, uint16 proofType); event SetChainAddressSize(uint16 indexed chainId, uint size); event SetDefaultConfigForChainId(uint16 indexed chainId, uint16 inboundProofLib, uint64 inboundBlockConfirm, address relayer, uint16 outboundProofType, uint64 outboundBlockConfirm, address oracle); event SetDefaultAdapterParamsForChainId(uint16 indexed chainId, uint16 indexed proofType, bytes adapterParams); event SetLayerZeroToken(address indexed tokenAddress); event SetRemoteUln(uint16 indexed chainId, bytes32 uln); event SetTreasury(address indexed treasuryAddress); event WithdrawZRO(address indexed msgSender, address indexed to, uint amount); event WithdrawNative(address indexed msgSender, address indexed to, uint amount); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; interface ILayerZeroUserApplicationConfig { // @notice set the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _configType - type of configuration. every messaging library has its own convention. // @param _config - configuration in the bytes. can encode arbitrary content. function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external; // @notice set the send() LayerZero messaging library version to _version // @param _version - new messaging library version function setSendVersion(uint16 _version) external; // @notice set the lzReceive() LayerZero messaging library version to _version // @param _version - new messaging library version function setReceiveVersion(uint16 _version) external; // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload // @param _srcChainId - the chainId of the source chain // @param _srcAddress - the contract address of the source contract at the source chain function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external; }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.7.0; pragma abicoder v2; import "../proof/utility/LayerZeroPacket.sol"; interface ILayerZeroValidationLibrary { function validateProof(bytes32 blockData, bytes calldata _data, uint _remoteAddressSize) external returns (LayerZeroPacket.Packet memory packet); }
// SPDX-License-Identifier: BUSL-1.1 // https://github.com/ensdomains/buffer pragma solidity ^0.7.0; /** * @dev A library for working with mutable byte buffers in Solidity. * * Byte buffers are mutable and expandable, and provide a variety of primitives * for writing to them. At any time you can fetch a bytes object containing the * current contents of the buffer. The bytes object should not be stored between * operations, as it may change due to resizing of the buffer. */ library Buffer { /** * @dev Represents a mutable buffer. Buffers have a current value (buf) and * a capacity. The capacity may be longer than the current value, in * which case it can be extended without the need to allocate more memory. */ struct buffer { bytes buf; uint capacity; } /** * @dev Initializes a buffer with an initial capacity.a co * @param buf The buffer to initialize. * @param capacity The number of bytes of space to allocate the buffer. * @return The buffer, for chaining. */ function init(buffer memory buf, uint capacity) internal pure returns (buffer memory) { if (capacity % 32 != 0) { capacity += 32 - (capacity % 32); } // Allocate space for the buffer data buf.capacity = capacity; assembly { let ptr := mload(0x40) mstore(buf, ptr) mstore(ptr, 0) mstore(0x40, add(32, add(ptr, capacity))) } return buf; } /** * @dev Writes a byte string to a buffer. Resizes if doing so would exceed * the capacity of the buffer. * @param buf The buffer to append to. * @param off The start offset to write to. * @param rawData The data to append. * @param len The number of bytes to copy. * @return The original buffer, for chaining. */ function writeRawBytes( buffer memory buf, uint off, bytes memory rawData, uint offData, uint len ) internal pure returns (buffer memory) { if (off + len > buf.capacity) { resize(buf, max(buf.capacity, len + off) * 2); } uint dest; uint src; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Start address = buffer address + offset + sizeof(buffer length) dest := add(add(bufptr, 32), off) // Update buffer length if we're extending it if gt(add(len, off), buflen) { mstore(bufptr, add(len, off)) } src := add(rawData, offData) } // Copy word-length chunks while possible for (; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } // Copy remaining bytes uint mask = 256**(32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } return buf; } /** * @dev Writes a byte string to a buffer. Resizes if doing so would exceed * the capacity of the buffer. * @param buf The buffer to append to. * @param off The start offset to write to. * @param data The data to append. * @param len The number of bytes to copy. * @return The original buffer, for chaining. */ function write(buffer memory buf, uint off, bytes memory data, uint len) internal pure returns (buffer memory) { require(len <= data.length); if (off + len > buf.capacity) { resize(buf, max(buf.capacity, len + off) * 2); } uint dest; uint src; assembly { // Memory address of the buffer data let bufptr := mload(buf) // Length of existing buffer data let buflen := mload(bufptr) // Start address = buffer address + offset + sizeof(buffer length) dest := add(add(bufptr, 32), off) // Update buffer length if we're extending it if gt(add(len, off), buflen) { mstore(bufptr, add(len, off)) } src := add(data, 32) } // Copy word-length chunks while possible for (; len >= 32; len -= 32) { assembly { mstore(dest, mload(src)) } dest += 32; src += 32; } // Copy remaining bytes uint mask = 256**(32 - len) - 1; assembly { let srcpart := and(mload(src), not(mask)) let destpart := and(mload(dest), mask) mstore(dest, or(destpart, srcpart)) } return buf; } function append(buffer memory buf, bytes memory data) internal pure returns (buffer memory) { return write(buf, buf.buf.length, data, data.length); } function resize(buffer memory buf, uint capacity) private pure { bytes memory oldbuf = buf.buf; init(buf, capacity); append(buf, oldbuf); } function max(uint a, uint b) private pure returns (uint) { if (a > b) { return a; } return b; } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity 0.7.6; import "./Buffer.sol"; import "@openzeppelin/contracts/math/SafeMath.sol"; library LayerZeroPacket { using Buffer for Buffer.buffer; using SafeMath for uint; struct Packet { uint16 srcChainId; uint16 dstChainId; uint64 nonce; address dstAddress; bytes srcAddress; bytes32 ulnAddress; bytes payload; } function getPacket( bytes memory data, uint16 srcChain, uint sizeOfSrcAddress, bytes32 ulnAddress ) internal pure returns (LayerZeroPacket.Packet memory) { uint16 dstChainId; address dstAddress; uint size; uint64 nonce; // The log consists of the destination chain id and then a bytes payload // 0--------------------------------------------31 // 0 | total bytes size // 32 | destination chain id // 64 | bytes offset // 96 | bytes array size // 128 | payload assembly { dstChainId := mload(add(data, 32)) size := mload(add(data, 96)) /// size of the byte array nonce := mload(add(data, 104)) // offset to convert to uint64 128 is index -24 dstAddress := mload(add(data, sub(add(128, sizeOfSrcAddress), 4))) // offset to convert to address 12 -8 } Buffer.buffer memory srcAddressBuffer; srcAddressBuffer.init(sizeOfSrcAddress); srcAddressBuffer.writeRawBytes(0, data, 136, sizeOfSrcAddress); // 128 + 8 uint payloadSize = size.sub(28).sub(sizeOfSrcAddress); Buffer.buffer memory payloadBuffer; payloadBuffer.init(payloadSize); payloadBuffer.writeRawBytes(0, data, sizeOfSrcAddress.add(156), payloadSize); // 148 + 8 return LayerZeroPacket.Packet(srcChain, dstChainId, nonce, dstAddress, srcAddressBuffer.buf, ulnAddress, payloadBuffer.buf); } function getPacketV2( bytes memory data, uint sizeOfSrcAddress, bytes32 ulnAddress ) internal pure returns (LayerZeroPacket.Packet memory) { // packet def: abi.encodePacked(nonce, srcChain, srcAddress, dstChain, dstAddress, payload); // data def: abi.encode(packet) = offset(32) + length(32) + packet // if from EVM // 0 - 31 0 - 31 | total bytes size // 32 - 63 32 - 63 | location // 64 - 95 64 - 95 | size of the packet // 96 - 103 96 - 103 | nonce // 104 - 105 104 - 105 | srcChainId // 106 - P 106 - 125 | srcAddress, where P = 106 + sizeOfSrcAddress - 1, // P+1 - P+2 126 - 127 | dstChainId // P+3 - P+22 128 - 147 | dstAddress // P+23 - END 148 - END | payload // decode the packet uint256 realSize; uint64 nonce; uint16 srcChain; uint16 dstChain; address dstAddress; assembly { realSize := mload(add(data, 64)) nonce := mload(add(data, 72)) // 104 - 32 srcChain := mload(add(data, 74)) // 106 - 32 dstChain := mload(add(data, add(76, sizeOfSrcAddress))) // P + 3 - 32 = 105 + size + 3 - 32 = 76 + size dstAddress := mload(add(data, add(96, sizeOfSrcAddress))) // P + 23 - 32 = 105 + size + 23 - 32 = 96 + size } require(srcChain != 0, "LayerZeroPacket: invalid packet"); Buffer.buffer memory srcAddressBuffer; srcAddressBuffer.init(sizeOfSrcAddress); srcAddressBuffer.writeRawBytes(0, data, 106, sizeOfSrcAddress); uint nonPayloadSize = sizeOfSrcAddress.add(32);// 2 + 2 + 8 + 20, 32 + 20 = 52 if sizeOfSrcAddress == 20 uint payloadSize = realSize.sub(nonPayloadSize); Buffer.buffer memory payloadBuffer; payloadBuffer.init(payloadSize); payloadBuffer.writeRawBytes(0, data, nonPayloadSize.add(96), payloadSize); return LayerZeroPacket.Packet(srcChain, dstChain, nonce, dstAddress, srcAddressBuffer.buf, ulnAddress, payloadBuffer.buf); } function getPacketV3( bytes memory data, uint sizeOfSrcAddress, bytes32 ulnAddress ) internal pure returns (LayerZeroPacket.Packet memory) { // data def: abi.encodePacked(nonce, srcChain, srcAddress, dstChain, dstAddress, payload); // if from EVM // 0 - 31 0 - 31 | total bytes size // 32 - 39 32 - 39 | nonce // 40 - 41 40 - 41 | srcChainId // 42 - P 42 - 61 | srcAddress, where P = 41 + sizeOfSrcAddress, // P+1 - P+2 62 - 63 | dstChainId // P+3 - P+22 64 - 83 | dstAddress // P+23 - END 84 - END | payload // decode the packet uint256 realSize = data.length; uint nonPayloadSize = sizeOfSrcAddress.add(32);// 2 + 2 + 8 + 20, 32 + 20 = 52 if sizeOfSrcAddress == 20 require(realSize >= nonPayloadSize, "LayerZeroPacket: invalid packet"); uint payloadSize = realSize - nonPayloadSize; uint64 nonce; uint16 srcChain; uint16 dstChain; address dstAddress; assembly { nonce := mload(add(data, 8)) // 40 - 32 srcChain := mload(add(data, 10)) // 42 - 32 dstChain := mload(add(data, add(12, sizeOfSrcAddress))) // P + 3 - 32 = 41 + size + 3 - 32 = 12 + size dstAddress := mload(add(data, add(32, sizeOfSrcAddress))) // P + 23 - 32 = 41 + size + 23 - 32 = 32 + size } require(srcChain != 0, "LayerZeroPacket: invalid packet"); Buffer.buffer memory srcAddressBuffer; srcAddressBuffer.init(sizeOfSrcAddress); srcAddressBuffer.writeRawBytes(0, data, 42, sizeOfSrcAddress); Buffer.buffer memory payloadBuffer; if (payloadSize > 0) { payloadBuffer.init(payloadSize); payloadBuffer.writeRawBytes(0, data, nonPayloadSize.add(32), payloadSize); } return LayerZeroPacket.Packet(srcChain, dstChain, nonce, dstAddress, srcAddressBuffer.buf, ulnAddress, payloadBuffer.buf); } }
{ "evmVersion": "istanbul", "optimizer": { "enabled": true, "runs": 30000 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } } }
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IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"localChainId","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"maxInboundProofLibrary","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"nativeFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"nonceContract","outputs":[{"internalType":"contract NonceContract","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_ua","type":"address"},{"internalType":"uint64","name":"","type":"uint64"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"bytes","name":"_path","type":"bytes"},{"internalType":"bytes","name":"_payload","type":"bytes"},{"internalType":"address payable","name":"_refundAddress","type":"address"},{"internalType":"address","name":"_zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"}],"name":"send","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint256","name":"_size","type":"uint256"}],"name":"setChainAddressSize","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_remoteChainId","type":"uint16"},{"internalType":"address","name":"_ua","type":"address"},{"internalType":"uint256","name":"_configType","type":"uint256"},{"internalType":"bytes","name":"_config","type":"bytes"}],"name":"setConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint16","name":"_proofType","type":"uint16"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"}],"name":"setDefaultAdapterParamsForChainId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint16","name":"_inboundProofLibraryVersion","type":"uint16"},{"internalType":"uint64","name":"_inboundBlockConfirmations","type":"uint64"},{"internalType":"address","name":"_relayer","type":"address"},{"internalType":"uint16","name":"_outboundProofType","type":"uint16"},{"internalType":"uint64","name":"_outboundBlockConfirmations","type":"uint64"},{"internalType":"address","name":"_oracle","type":"address"}],"name":"setDefaultConfigForChainId","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_layerZeroToken","type":"address"}],"name":"setLayerZeroToken","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_remoteChainId","type":"uint16"},{"internalType":"bytes32","name":"_remoteUln","type":"bytes32"}],"name":"setRemoteUln","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_treasury","type":"address"}],"name":"setTreasury","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"uint16","name":"","type":"uint16"}],"name":"supportedOutboundProof","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"treasuryContract","outputs":[{"internalType":"contract ILayerZeroTreasury","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"treasuryZROFees","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"ulnLookup","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes32","name":"_lookupHash","type":"bytes32"},{"internalType":"uint256","name":"_confirmations","type":"uint256"},{"internalType":"bytes32","name":"_blockData","type":"bytes32"}],"name":"updateHash","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"address","name":"_dstAddress","type":"address"},{"internalType":"uint256","name":"_gasLimit","type":"uint256"},{"internalType":"bytes32","name":"_lookupHash","type":"bytes32"},{"internalType":"bytes32","name":"_blockData","type":"bytes32"},{"internalType":"bytes","name":"_transactionProof","type":"bytes"}],"name":"validateTransactionProof","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address payable","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawNative","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_to","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"}],"name":"withdrawZRO","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000b23b28012ee92e8de39deb57af3172222303474700000000000000000000000034bdfea3b552d6bd9413be2f60a00819b3b804fe000000000000000000000000000000000000000000000000000000000000278e
-----Decoded View---------------
Arg [0] : _endpoint (address): 0xb23b28012ee92E8dE39DEb57Af31722223034747
Arg [1] : _nonceContract (address): 0x34bdfEa3b552d6BD9413Be2F60A00819B3B804fE
Arg [2] : _localChainId (uint16): 10126
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 000000000000000000000000b23b28012ee92e8de39deb57af31722223034747
Arg [1] : 00000000000000000000000034bdfea3b552d6bd9413be2f60a00819b3b804fe
Arg [2] : 000000000000000000000000000000000000000000000000000000000000278e
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.