ERC-20
Add Token to MetaMask (Web3)Overview
Max Total Supply
0.0009 rsETH
Holders
1
Market
Price
$0.00 @ 0.000000 S
Onchain Market Cap
$0.00
Circulating Supply Market Cap
-
Other Info
Token Contract (WITH 18 Decimals)
Balance
0.0009 rsETHValue
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Contract Name:
RSETH_OFT
Compiler Version
v0.8.22+commit.4fc1097e
Contract Source Code (Solidity)
/**
*Submitted for verification at SonicScan.org on 2025-03-04
*/
// SPDX-License-Identifier: UNLICENSED
pragma solidity =0.8.22 >=0.8.0 ^0.8.20;
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppMsgInspector.sol
/**
* @title IOAppMsgInspector
* @dev Interface for the OApp Message Inspector, allowing examination of message and options contents.
*/
interface IOAppMsgInspector {
// Custom error message for inspection failure
error InspectionFailed(bytes message, bytes options);
/**
* @notice Allows the inspector to examine LayerZero message contents and optionally throw a revert if invalid.
* @param _message The message payload to be inspected.
* @param _options Additional options or parameters for inspection.
* @return valid A boolean indicating whether the inspection passed (true) or failed (false).
*
* @dev Optionally done as a revert, OR use the boolean provided to handle the failure.
*/
function inspect(bytes calldata _message, bytes calldata _options) external view returns (bool valid);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppOptionsType3.sol
/**
* @dev Struct representing enforced option parameters.
*/
struct EnforcedOptionParam {
uint32 eid; // Endpoint ID
uint16 msgType; // Message Type
bytes options; // Additional options
}
/**
* @title IOAppOptionsType3
* @dev Interface for the OApp with Type 3 Options, allowing the setting and combining of enforced options.
*/
interface IOAppOptionsType3 {
// Custom error message for invalid options
error InvalidOptions(bytes options);
// Event emitted when enforced options are set
event EnforcedOptionSet(EnforcedOptionParam[] _enforcedOptions);
/**
* @notice Sets enforced options for specific endpoint and message type combinations.
* @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.
*/
function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) external;
/**
* @notice Combines options for a given endpoint and message type.
* @param _eid The endpoint ID.
* @param _msgType The OApp message type.
* @param _extraOptions Additional options passed by the caller.
* @return options The combination of caller specified options AND enforced options.
*/
function combineOptions(
uint32 _eid,
uint16 _msgType,
bytes calldata _extraOptions
) external view returns (bytes memory options);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oft/libs/OFTComposeMsgCodec.sol
library OFTComposeMsgCodec {
// Offset constants for decoding composed messages
uint8 private constant NONCE_OFFSET = 8;
uint8 private constant SRC_EID_OFFSET = 12;
uint8 private constant AMOUNT_LD_OFFSET = 44;
uint8 private constant COMPOSE_FROM_OFFSET = 76;
/**
* @dev Encodes a OFT composed message.
* @param _nonce The nonce value.
* @param _srcEid The source endpoint ID.
* @param _amountLD The amount in local decimals.
* @param _composeMsg The composed message.
* @return _msg The encoded Composed message.
*/
function encode(
uint64 _nonce,
uint32 _srcEid,
uint256 _amountLD,
bytes memory _composeMsg // 0x[composeFrom][composeMsg]
) internal pure returns (bytes memory _msg) {
_msg = abi.encodePacked(_nonce, _srcEid, _amountLD, _composeMsg);
}
/**
* @dev Retrieves the nonce from the composed message.
* @param _msg The message.
* @return The nonce value.
*/
function nonce(bytes calldata _msg) internal pure returns (uint64) {
return uint64(bytes8(_msg[:NONCE_OFFSET]));
}
/**
* @dev Retrieves the source endpoint ID from the composed message.
* @param _msg The message.
* @return The source endpoint ID.
*/
function srcEid(bytes calldata _msg) internal pure returns (uint32) {
return uint32(bytes4(_msg[NONCE_OFFSET:SRC_EID_OFFSET]));
}
/**
* @dev Retrieves the amount in local decimals from the composed message.
* @param _msg The message.
* @return The amount in local decimals.
*/
function amountLD(bytes calldata _msg) internal pure returns (uint256) {
return uint256(bytes32(_msg[SRC_EID_OFFSET:AMOUNT_LD_OFFSET]));
}
/**
* @dev Retrieves the composeFrom value from the composed message.
* @param _msg The message.
* @return The composeFrom value.
*/
function composeFrom(bytes calldata _msg) internal pure returns (bytes32) {
return bytes32(_msg[AMOUNT_LD_OFFSET:COMPOSE_FROM_OFFSET]);
}
/**
* @dev Retrieves the composed message.
* @param _msg The message.
* @return The composed message.
*/
function composeMsg(bytes calldata _msg) internal pure returns (bytes memory) {
return _msg[COMPOSE_FROM_OFFSET:];
}
/**
* @dev Converts an address to bytes32.
* @param _addr The address to convert.
* @return The bytes32 representation of the address.
*/
function addressToBytes32(address _addr) internal pure returns (bytes32) {
return bytes32(uint256(uint160(_addr)));
}
/**
* @dev Converts bytes32 to an address.
* @param _b The bytes32 value to convert.
* @return The address representation of bytes32.
*/
function bytes32ToAddress(bytes32 _b) internal pure returns (address) {
return address(uint160(uint256(_b)));
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oft/libs/OFTMsgCodec.sol
library OFTMsgCodec {
// Offset constants for encoding and decoding OFT messages
uint8 private constant SEND_TO_OFFSET = 32;
uint8 private constant SEND_AMOUNT_SD_OFFSET = 40;
/**
* @dev Encodes an OFT LayerZero message.
* @param _sendTo The recipient address.
* @param _amountShared The amount in shared decimals.
* @param _composeMsg The composed message.
* @return _msg The encoded message.
* @return hasCompose A boolean indicating whether the message has a composed payload.
*/
function encode(
bytes32 _sendTo,
uint64 _amountShared,
bytes memory _composeMsg
) internal view returns (bytes memory _msg, bool hasCompose) {
hasCompose = _composeMsg.length > 0;
// @dev Remote chains will want to know the composed function caller ie. msg.sender on the src.
_msg = hasCompose
? abi.encodePacked(_sendTo, _amountShared, addressToBytes32(msg.sender), _composeMsg)
: abi.encodePacked(_sendTo, _amountShared);
}
/**
* @dev Checks if the OFT message is composed.
* @param _msg The OFT message.
* @return A boolean indicating whether the message is composed.
*/
function isComposed(bytes calldata _msg) internal pure returns (bool) {
return _msg.length > SEND_AMOUNT_SD_OFFSET;
}
/**
* @dev Retrieves the recipient address from the OFT message.
* @param _msg The OFT message.
* @return The recipient address.
*/
function sendTo(bytes calldata _msg) internal pure returns (bytes32) {
return bytes32(_msg[:SEND_TO_OFFSET]);
}
/**
* @dev Retrieves the amount in shared decimals from the OFT message.
* @param _msg The OFT message.
* @return The amount in shared decimals.
*/
function amountSD(bytes calldata _msg) internal pure returns (uint64) {
return uint64(bytes8(_msg[SEND_TO_OFFSET:SEND_AMOUNT_SD_OFFSET]));
}
/**
* @dev Retrieves the composed message from the OFT message.
* @param _msg The OFT message.
* @return The composed message.
*/
function composeMsg(bytes calldata _msg) internal pure returns (bytes memory) {
return _msg[SEND_AMOUNT_SD_OFFSET:];
}
/**
* @dev Converts an address to bytes32.
* @param _addr The address to convert.
* @return The bytes32 representation of the address.
*/
function addressToBytes32(address _addr) internal pure returns (bytes32) {
return bytes32(uint256(uint160(_addr)));
}
/**
* @dev Converts bytes32 to an address.
* @param _b The bytes32 value to convert.
* @return The address representation of bytes32.
*/
function bytes32ToAddress(bytes32 _b) internal pure returns (address) {
return address(uint160(uint256(_b)));
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/interfaces/IPreCrime.sol
struct PreCrimePeer {
uint32 eid;
bytes32 preCrime;
bytes32 oApp;
}
// TODO not done yet
interface IPreCrime {
error OnlyOffChain();
// for simulate()
error PacketOversize(uint256 max, uint256 actual);
error PacketUnsorted();
error SimulationFailed(bytes reason);
// for preCrime()
error SimulationResultNotFound(uint32 eid);
error InvalidSimulationResult(uint32 eid, bytes reason);
error CrimeFound(bytes crime);
function getConfig(bytes[] calldata _packets, uint256[] calldata _packetMsgValues) external returns (bytes memory);
function simulate(
bytes[] calldata _packets,
uint256[] calldata _packetMsgValues
) external payable returns (bytes memory);
function buildSimulationResult() external view returns (bytes memory);
function preCrime(
bytes[] calldata _packets,
uint256[] calldata _packetMsgValues,
bytes[] calldata _simulations
) external;
function version() external view returns (uint64 major, uint8 minor);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLibManager.sol
struct SetConfigParam {
uint32 eid;
uint32 configType;
bytes config;
}
interface IMessageLibManager {
struct Timeout {
address lib;
uint256 expiry;
}
event LibraryRegistered(address newLib);
event DefaultSendLibrarySet(uint32 eid, address newLib);
event DefaultReceiveLibrarySet(uint32 eid, address newLib);
event DefaultReceiveLibraryTimeoutSet(uint32 eid, address oldLib, uint256 expiry);
event SendLibrarySet(address sender, uint32 eid, address newLib);
event ReceiveLibrarySet(address receiver, uint32 eid, address newLib);
event ReceiveLibraryTimeoutSet(address receiver, uint32 eid, address oldLib, uint256 timeout);
function registerLibrary(address _lib) external;
function isRegisteredLibrary(address _lib) external view returns (bool);
function getRegisteredLibraries() external view returns (address[] memory);
function setDefaultSendLibrary(uint32 _eid, address _newLib) external;
function defaultSendLibrary(uint32 _eid) external view returns (address);
function setDefaultReceiveLibrary(uint32 _eid, address _newLib, uint256 _gracePeriod) external;
function defaultReceiveLibrary(uint32 _eid) external view returns (address);
function setDefaultReceiveLibraryTimeout(uint32 _eid, address _lib, uint256 _expiry) external;
function defaultReceiveLibraryTimeout(uint32 _eid) external view returns (address lib, uint256 expiry);
function isSupportedEid(uint32 _eid) external view returns (bool);
function isValidReceiveLibrary(address _receiver, uint32 _eid, address _lib) external view returns (bool);
/// ------------------- OApp interfaces -------------------
function setSendLibrary(address _oapp, uint32 _eid, address _newLib) external;
function getSendLibrary(address _sender, uint32 _eid) external view returns (address lib);
function isDefaultSendLibrary(address _sender, uint32 _eid) external view returns (bool);
function setReceiveLibrary(address _oapp, uint32 _eid, address _newLib, uint256 _gracePeriod) external;
function getReceiveLibrary(address _receiver, uint32 _eid) external view returns (address lib, bool isDefault);
function setReceiveLibraryTimeout(address _oapp, uint32 _eid, address _lib, uint256 _expiry) external;
function receiveLibraryTimeout(address _receiver, uint32 _eid) external view returns (address lib, uint256 expiry);
function setConfig(address _oapp, address _lib, SetConfigParam[] calldata _params) external;
function getConfig(
address _oapp,
address _lib,
uint32 _eid,
uint32 _configType
) external view returns (bytes memory config);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingChannel.sol
interface IMessagingChannel {
event InboundNonceSkipped(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce);
event PacketNilified(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);
event PacketBurnt(uint32 srcEid, bytes32 sender, address receiver, uint64 nonce, bytes32 payloadHash);
function eid() external view returns (uint32);
// this is an emergency function if a message cannot be verified for some reasons
// required to provide _nextNonce to avoid race condition
function skip(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce) external;
function nilify(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;
function burn(address _oapp, uint32 _srcEid, bytes32 _sender, uint64 _nonce, bytes32 _payloadHash) external;
function nextGuid(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (bytes32);
function inboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);
function outboundNonce(address _sender, uint32 _dstEid, bytes32 _receiver) external view returns (uint64);
function inboundPayloadHash(
address _receiver,
uint32 _srcEid,
bytes32 _sender,
uint64 _nonce
) external view returns (bytes32);
function lazyInboundNonce(address _receiver, uint32 _srcEid, bytes32 _sender) external view returns (uint64);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingComposer.sol
interface IMessagingComposer {
event ComposeSent(address from, address to, bytes32 guid, uint16 index, bytes message);
event ComposeDelivered(address from, address to, bytes32 guid, uint16 index);
event LzComposeAlert(
address indexed from,
address indexed to,
address indexed executor,
bytes32 guid,
uint16 index,
uint256 gas,
uint256 value,
bytes message,
bytes extraData,
bytes reason
);
function composeQueue(
address _from,
address _to,
bytes32 _guid,
uint16 _index
) external view returns (bytes32 messageHash);
function sendCompose(address _to, bytes32 _guid, uint16 _index, bytes calldata _message) external;
function lzCompose(
address _from,
address _to,
bytes32 _guid,
uint16 _index,
bytes calldata _message,
bytes calldata _extraData
) external payable;
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessagingContext.sol
interface IMessagingContext {
function isSendingMessage() external view returns (bool);
function getSendContext() external view returns (uint32 dstEid, address sender);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/libs/AddressCast.sol
library AddressCast {
error AddressCast_InvalidSizeForAddress();
error AddressCast_InvalidAddress();
function toBytes32(bytes calldata _addressBytes) internal pure returns (bytes32 result) {
if (_addressBytes.length > 32) revert AddressCast_InvalidAddress();
result = bytes32(_addressBytes);
unchecked {
uint256 offset = 32 - _addressBytes.length;
result = result >> (offset * 8);
}
}
function toBytes32(address _address) internal pure returns (bytes32 result) {
result = bytes32(uint256(uint160(_address)));
}
function toBytes(bytes32 _addressBytes32, uint256 _size) internal pure returns (bytes memory result) {
if (_size == 0 || _size > 32) revert AddressCast_InvalidSizeForAddress();
result = new bytes(_size);
unchecked {
uint256 offset = 256 - _size * 8;
assembly {
mstore(add(result, 32), shl(offset, _addressBytes32))
}
}
}
function toAddress(bytes32 _addressBytes32) internal pure returns (address result) {
result = address(uint160(uint256(_addressBytes32)));
}
function toAddress(bytes calldata _addressBytes) internal pure returns (address result) {
if (_addressBytes.length != 20) revert AddressCast_InvalidAddress();
result = address(bytes20(_addressBytes));
}
}
// node_modules/@openzeppelin/contracts/interfaces/draft-IERC6093.sol
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/draft-IERC6093.sol)
/**
* @dev Standard ERC-20 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-20 tokens.
*/
interface IERC20Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientBalance(address sender, uint256 balance, uint256 needed);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC20InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC20InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `spender`’s `allowance`. Used in transfers.
* @param spender Address that may be allowed to operate on tokens without being their owner.
* @param allowance Amount of tokens a `spender` is allowed to operate with.
* @param needed Minimum amount required to perform a transfer.
*/
error ERC20InsufficientAllowance(address spender, uint256 allowance, uint256 needed);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC20InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `spender` to be approved. Used in approvals.
* @param spender Address that may be allowed to operate on tokens without being their owner.
*/
error ERC20InvalidSpender(address spender);
}
/**
* @dev Standard ERC-721 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-721 tokens.
*/
interface IERC721Errors {
/**
* @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in ERC-20.
* Used in balance queries.
* @param owner Address of the current owner of a token.
*/
error ERC721InvalidOwner(address owner);
/**
* @dev Indicates a `tokenId` whose `owner` is the zero address.
* @param tokenId Identifier number of a token.
*/
error ERC721NonexistentToken(uint256 tokenId);
/**
* @dev Indicates an error related to the ownership over a particular token. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param tokenId Identifier number of a token.
* @param owner Address of the current owner of a token.
*/
error ERC721IncorrectOwner(address sender, uint256 tokenId, address owner);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC721InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC721InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param tokenId Identifier number of a token.
*/
error ERC721InsufficientApproval(address operator, uint256 tokenId);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC721InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC721InvalidOperator(address operator);
}
/**
* @dev Standard ERC-1155 Errors
* Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC-1155 tokens.
*/
interface IERC1155Errors {
/**
* @dev Indicates an error related to the current `balance` of a `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
* @param balance Current balance for the interacting account.
* @param needed Minimum amount required to perform a transfer.
* @param tokenId Identifier number of a token.
*/
error ERC1155InsufficientBalance(address sender, uint256 balance, uint256 needed, uint256 tokenId);
/**
* @dev Indicates a failure with the token `sender`. Used in transfers.
* @param sender Address whose tokens are being transferred.
*/
error ERC1155InvalidSender(address sender);
/**
* @dev Indicates a failure with the token `receiver`. Used in transfers.
* @param receiver Address to which tokens are being transferred.
*/
error ERC1155InvalidReceiver(address receiver);
/**
* @dev Indicates a failure with the `operator`’s approval. Used in transfers.
* @param operator Address that may be allowed to operate on tokens without being their owner.
* @param owner Address of the current owner of a token.
*/
error ERC1155MissingApprovalForAll(address operator, address owner);
/**
* @dev Indicates a failure with the `approver` of a token to be approved. Used in approvals.
* @param approver Address initiating an approval operation.
*/
error ERC1155InvalidApprover(address approver);
/**
* @dev Indicates a failure with the `operator` to be approved. Used in approvals.
* @param operator Address that may be allowed to operate on tokens without being their owner.
*/
error ERC1155InvalidOperator(address operator);
/**
* @dev Indicates an array length mismatch between ids and values in a safeBatchTransferFrom operation.
* Used in batch transfers.
* @param idsLength Length of the array of token identifiers
* @param valuesLength Length of the array of token amounts
*/
error ERC1155InvalidArrayLength(uint256 idsLength, uint256 valuesLength);
}
// node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/IERC20.sol)
/**
* @dev Interface of the ERC-20 standard as defined in the ERC.
*/
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 value of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the value of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the
* allowance mechanism. `value` 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 value) external returns (bool);
}
// node_modules/@openzeppelin/contracts/utils/Context.sol
// OpenZeppelin Contracts (last updated v5.0.1) (utils/Context.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 Context {
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;
}
}
// node_modules/@openzeppelin/contracts/utils/introspection/IERC165.sol
// OpenZeppelin Contracts (last updated v5.1.0) (utils/introspection/IERC165.sol)
/**
* @dev Interface of the ERC-165 standard, as defined in the
* https://eips.ethereum.org/EIPS/eip-165[ERC].
*
* 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[ERC 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);
}
// node_modules/@openzeppelin/contracts/access/Ownable.sol
// OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.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.
*
* The initial owner is set to the address provided by the deployer. 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;
/**
* @dev The caller account is not authorized to perform an operation.
*/
error OwnableUnauthorizedAccount(address account);
/**
* @dev The owner is not a valid owner account. (eg. `address(0)`)
*/
error OwnableInvalidOwner(address owner);
event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);
/**
* @dev Initializes the contract setting the address provided by the deployer as the initial owner.
*/
constructor(address initialOwner) {
if (initialOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_transferOwnership(initialOwner);
}
/**
* @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 {
if (owner() != _msgSender()) {
revert OwnableUnauthorizedAccount(_msgSender());
}
}
/**
* @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 {
if (newOwner == address(0)) {
revert OwnableInvalidOwner(address(0));
}
_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);
}
}
// node_modules/@openzeppelin/contracts/interfaces/IERC165.sol
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC165.sol)
// node_modules/@openzeppelin/contracts/interfaces/IERC20.sol
// OpenZeppelin Contracts (last updated v5.0.0) (interfaces/IERC20.sol)
// node_modules/@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol
// OpenZeppelin Contracts (last updated v5.1.0) (token/ERC20/extensions/IERC20Metadata.sol)
/**
* @dev Interface for the optional metadata functions from the ERC-20 standard.
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/IMessageLib.sol
enum MessageLibType {
Send,
Receive,
SendAndReceive
}
interface IMessageLib is IERC165 {
function setConfig(address _oapp, SetConfigParam[] calldata _config) external;
function getConfig(uint32 _eid, address _oapp, uint32 _configType) external view returns (bytes memory config);
function isSupportedEid(uint32 _eid) external view returns (bool);
// message libs of same major version are compatible
function version() external view returns (uint64 major, uint8 minor, uint8 endpointVersion);
function messageLibType() external view returns (MessageLibType);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/libs/OAppOptionsType3.sol
/**
* @title OAppOptionsType3
* @dev Abstract contract implementing the IOAppOptionsType3 interface with type 3 options.
*/
abstract contract OAppOptionsType3 is IOAppOptionsType3, Ownable {
uint16 internal constant OPTION_TYPE_3 = 3;
// @dev The "msgType" should be defined in the child contract.
mapping(uint32 eid => mapping(uint16 msgType => bytes enforcedOption)) public enforcedOptions;
/**
* @dev Sets the enforced options for specific endpoint and message type combinations.
* @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.
*
* @dev Only the owner/admin of the OApp can call this function.
* @dev Provides a way for the OApp to enforce things like paying for PreCrime, AND/OR minimum dst lzReceive gas amounts etc.
* @dev These enforced options can vary as the potential options/execution on the remote may differ as per the msgType.
* eg. Amount of lzReceive() gas necessary to deliver a lzCompose() message adds overhead you dont want to pay
* if you are only making a standard LayerZero message ie. lzReceive() WITHOUT sendCompose().
*/
function setEnforcedOptions(EnforcedOptionParam[] calldata _enforcedOptions) public virtual onlyOwner {
_setEnforcedOptions(_enforcedOptions);
}
/**
* @dev Sets the enforced options for specific endpoint and message type combinations.
* @param _enforcedOptions An array of EnforcedOptionParam structures specifying enforced options.
*
* @dev Provides a way for the OApp to enforce things like paying for PreCrime, AND/OR minimum dst lzReceive gas amounts etc.
* @dev These enforced options can vary as the potential options/execution on the remote may differ as per the msgType.
* eg. Amount of lzReceive() gas necessary to deliver a lzCompose() message adds overhead you dont want to pay
* if you are only making a standard LayerZero message ie. lzReceive() WITHOUT sendCompose().
*/
function _setEnforcedOptions(EnforcedOptionParam[] memory _enforcedOptions) internal virtual {
for (uint256 i = 0; i < _enforcedOptions.length; i++) {
// @dev Enforced options are only available for optionType 3, as type 1 and 2 dont support combining.
_assertOptionsType3(_enforcedOptions[i].options);
enforcedOptions[_enforcedOptions[i].eid][_enforcedOptions[i].msgType] = _enforcedOptions[i].options;
}
emit EnforcedOptionSet(_enforcedOptions);
}
/**
* @notice Combines options for a given endpoint and message type.
* @param _eid The endpoint ID.
* @param _msgType The OAPP message type.
* @param _extraOptions Additional options passed by the caller.
* @return options The combination of caller specified options AND enforced options.
*
* @dev If there is an enforced lzReceive option:
* - {gasLimit: 200k, msg.value: 1 ether} AND a caller supplies a lzReceive option: {gasLimit: 100k, msg.value: 0.5 ether}
* - The resulting options will be {gasLimit: 300k, msg.value: 1.5 ether} when the message is executed on the remote lzReceive() function.
* @dev This presence of duplicated options is handled off-chain in the verifier/executor.
*/
function combineOptions(
uint32 _eid,
uint16 _msgType,
bytes calldata _extraOptions
) public view virtual returns (bytes memory) {
bytes memory enforced = enforcedOptions[_eid][_msgType];
// No enforced options, pass whatever the caller supplied, even if it's empty or legacy type 1/2 options.
if (enforced.length == 0) return _extraOptions;
// No caller options, return enforced
if (_extraOptions.length == 0) return enforced;
// @dev If caller provided _extraOptions, must be type 3 as its the ONLY type that can be combined.
if (_extraOptions.length >= 2) {
_assertOptionsType3(_extraOptions);
// @dev Remove the first 2 bytes containing the type from the _extraOptions and combine with enforced.
return bytes.concat(enforced, _extraOptions[2:]);
}
// No valid set of options was found.
revert InvalidOptions(_extraOptions);
}
/**
* @dev Internal function to assert that options are of type 3.
* @param _options The options to be checked.
*/
function _assertOptionsType3(bytes memory _options) internal pure virtual {
uint16 optionsType;
assembly {
optionsType := mload(add(_options, 2))
}
if (optionsType != OPTION_TYPE_3) revert InvalidOptions(_options);
}
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroEndpointV2.sol
struct MessagingParams {
uint32 dstEid;
bytes32 receiver;
bytes message;
bytes options;
bool payInLzToken;
}
struct MessagingReceipt {
bytes32 guid;
uint64 nonce;
MessagingFee fee;
}
struct MessagingFee {
uint256 nativeFee;
uint256 lzTokenFee;
}
struct Origin {
uint32 srcEid;
bytes32 sender;
uint64 nonce;
}
interface ILayerZeroEndpointV2 is IMessageLibManager, IMessagingComposer, IMessagingChannel, IMessagingContext {
event PacketSent(bytes encodedPayload, bytes options, address sendLibrary);
event PacketVerified(Origin origin, address receiver, bytes32 payloadHash);
event PacketDelivered(Origin origin, address receiver);
event LzReceiveAlert(
address indexed receiver,
address indexed executor,
Origin origin,
bytes32 guid,
uint256 gas,
uint256 value,
bytes message,
bytes extraData,
bytes reason
);
event LzTokenSet(address token);
event DelegateSet(address sender, address delegate);
function quote(MessagingParams calldata _params, address _sender) external view returns (MessagingFee memory);
function send(
MessagingParams calldata _params,
address _refundAddress
) external payable returns (MessagingReceipt memory);
function verify(Origin calldata _origin, address _receiver, bytes32 _payloadHash) external;
function verifiable(Origin calldata _origin, address _receiver) external view returns (bool);
function initializable(Origin calldata _origin, address _receiver) external view returns (bool);
function lzReceive(
Origin calldata _origin,
address _receiver,
bytes32 _guid,
bytes calldata _message,
bytes calldata _extraData
) external payable;
// oapp can burn messages partially by calling this function with its own business logic if messages are verified in order
function clear(address _oapp, Origin calldata _origin, bytes32 _guid, bytes calldata _message) external;
function setLzToken(address _lzToken) external;
function lzToken() external view returns (address);
function nativeToken() external view returns (address);
function setDelegate(address _delegate) external;
}
// node_modules/@openzeppelin/contracts/interfaces/IERC1363.sol
// OpenZeppelin Contracts (last updated v5.1.0) (interfaces/IERC1363.sol)
/**
* @title IERC1363
* @dev Interface of the ERC-1363 standard as defined in the https://eips.ethereum.org/EIPS/eip-1363[ERC-1363].
*
* Defines an extension interface for ERC-20 tokens that supports executing code on a recipient contract
* after `transfer` or `transferFrom`, or code on a spender contract after `approve`, in a single transaction.
*/
interface IERC1363 is IERC20, IERC165 {
/*
* Note: the ERC-165 identifier for this interface is 0xb0202a11.
* 0xb0202a11 ===
* bytes4(keccak256('transferAndCall(address,uint256)')) ^
* bytes4(keccak256('transferAndCall(address,uint256,bytes)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256)')) ^
* bytes4(keccak256('transferFromAndCall(address,address,uint256,bytes)')) ^
* bytes4(keccak256('approveAndCall(address,uint256)')) ^
* bytes4(keccak256('approveAndCall(address,uint256,bytes)'))
*/
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from the caller's account to `to`
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferAndCall(address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value) external returns (bool);
/**
* @dev Moves a `value` amount of tokens from `from` to `to` using the allowance mechanism
* and then calls {IERC1363Receiver-onTransferReceived} on `to`.
* @param from The address which you want to send tokens from.
* @param to The address which you want to transfer to.
* @param value The amount of tokens to be transferred.
* @param data Additional data with no specified format, sent in call to `to`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function transferFromAndCall(address from, address to, uint256 value, bytes calldata data) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value) external returns (bool);
/**
* @dev Sets a `value` amount of tokens as the allowance of `spender` over the
* caller's tokens and then calls {IERC1363Spender-onApprovalReceived} on `spender`.
* @param spender The address which will spend the funds.
* @param value The amount of tokens to be spent.
* @param data Additional data with no specified format, sent in call to `spender`.
* @return A boolean value indicating whether the operation succeeded unless throwing.
*/
function approveAndCall(address spender, uint256 value, bytes calldata data) external returns (bool);
}
// node_modules/@openzeppelin/contracts/token/ERC20/ERC20.sol
// OpenZeppelin Contracts (last updated v5.2.0) (token/ERC20/ERC20.sol)
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
*
* TIP: For a detailed writeup see our guide
* https://forum.openzeppelin.com/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* The default value of {decimals} is 18. To change this, you should override
* this function so it returns a different value.
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC-20
* applications.
*/
abstract contract ERC20 is Context, IERC20, IERC20Metadata, IERC20Errors {
mapping(address account => uint256) private _balances;
mapping(address account => mapping(address spender => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the default value returned by this function, unless
* it's overridden.
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `value`.
*/
function transfer(address to, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_transfer(owner, to, value);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `value` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 value) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, value);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Skips emitting an {Approval} event indicating an allowance update. This is not
* required by the ERC. See {xref-ERC20-_approve-address-address-uint256-bool-}[_approve].
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `value`.
* - the caller must have allowance for ``from``'s tokens of at least
* `value`.
*/
function transferFrom(address from, address to, uint256 value) public virtual returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, value);
_transfer(from, to, value);
return true;
}
/**
* @dev Moves a `value` amount of tokens from `from` to `to`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _transfer(address from, address to, uint256 value) internal {
if (from == address(0)) {
revert ERC20InvalidSender(address(0));
}
if (to == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(from, to, value);
}
/**
* @dev Transfers a `value` amount of tokens from `from` to `to`, or alternatively mints (or burns) if `from`
* (or `to`) is the zero address. All customizations to transfers, mints, and burns should be done by overriding
* this function.
*
* Emits a {Transfer} event.
*/
function _update(address from, address to, uint256 value) internal virtual {
if (from == address(0)) {
// Overflow check required: The rest of the code assumes that totalSupply never overflows
_totalSupply += value;
} else {
uint256 fromBalance = _balances[from];
if (fromBalance < value) {
revert ERC20InsufficientBalance(from, fromBalance, value);
}
unchecked {
// Overflow not possible: value <= fromBalance <= totalSupply.
_balances[from] = fromBalance - value;
}
}
if (to == address(0)) {
unchecked {
// Overflow not possible: value <= totalSupply or value <= fromBalance <= totalSupply.
_totalSupply -= value;
}
} else {
unchecked {
// Overflow not possible: balance + value is at most totalSupply, which we know fits into a uint256.
_balances[to] += value;
}
}
emit Transfer(from, to, value);
}
/**
* @dev Creates a `value` amount of tokens and assigns them to `account`, by transferring it from address(0).
* Relies on the `_update` mechanism
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead.
*/
function _mint(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidReceiver(address(0));
}
_update(address(0), account, value);
}
/**
* @dev Destroys a `value` amount of tokens from `account`, lowering the total supply.
* Relies on the `_update` mechanism.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* NOTE: This function is not virtual, {_update} should be overridden instead
*/
function _burn(address account, uint256 value) internal {
if (account == address(0)) {
revert ERC20InvalidSender(address(0));
}
_update(account, address(0), value);
}
/**
* @dev Sets `value` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*
* Overrides to this logic should be done to the variant with an additional `bool emitEvent` argument.
*/
function _approve(address owner, address spender, uint256 value) internal {
_approve(owner, spender, value, true);
}
/**
* @dev Variant of {_approve} with an optional flag to enable or disable the {Approval} event.
*
* By default (when calling {_approve}) the flag is set to true. On the other hand, approval changes made by
* `_spendAllowance` during the `transferFrom` operation set the flag to false. This saves gas by not emitting any
* `Approval` event during `transferFrom` operations.
*
* Anyone who wishes to continue emitting `Approval` events on the`transferFrom` operation can force the flag to
* true using the following override:
*
* ```solidity
* function _approve(address owner, address spender, uint256 value, bool) internal virtual override {
* super._approve(owner, spender, value, true);
* }
* ```
*
* Requirements are the same as {_approve}.
*/
function _approve(address owner, address spender, uint256 value, bool emitEvent) internal virtual {
if (owner == address(0)) {
revert ERC20InvalidApprover(address(0));
}
if (spender == address(0)) {
revert ERC20InvalidSpender(address(0));
}
_allowances[owner][spender] = value;
if (emitEvent) {
emit Approval(owner, spender, value);
}
}
/**
* @dev Updates `owner` s allowance for `spender` based on spent `value`.
*
* Does not update the allowance value in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Does not emit an {Approval} event.
*/
function _spendAllowance(address owner, address spender, uint256 value) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance < type(uint256).max) {
if (currentAllowance < value) {
revert ERC20InsufficientAllowance(spender, currentAllowance, value);
}
unchecked {
_approve(owner, spender, currentAllowance - value, false);
}
}
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppCore.sol
/**
* @title IOAppCore
*/
interface IOAppCore {
// Custom error messages
error OnlyPeer(uint32 eid, bytes32 sender);
error NoPeer(uint32 eid);
error InvalidEndpointCall();
error InvalidDelegate();
// Event emitted when a peer (OApp) is set for a corresponding endpoint
event PeerSet(uint32 eid, bytes32 peer);
/**
* @notice Retrieves the OApp version information.
* @return senderVersion The version of the OAppSender.sol contract.
* @return receiverVersion The version of the OAppReceiver.sol contract.
*/
function oAppVersion() external view returns (uint64 senderVersion, uint64 receiverVersion);
/**
* @notice Retrieves the LayerZero endpoint associated with the OApp.
* @return iEndpoint The LayerZero endpoint as an interface.
*/
function endpoint() external view returns (ILayerZeroEndpointV2 iEndpoint);
/**
* @notice Retrieves the peer (OApp) associated with a corresponding endpoint.
* @param _eid The endpoint ID.
* @return peer The peer address (OApp instance) associated with the corresponding endpoint.
*/
function peers(uint32 _eid) external view returns (bytes32 peer);
/**
* @notice Sets the peer address (OApp instance) for a corresponding endpoint.
* @param _eid The endpoint ID.
* @param _peer The address of the peer to be associated with the corresponding endpoint.
*/
function setPeer(uint32 _eid, bytes32 _peer) external;
/**
* @notice Sets the delegate address for the OApp Core.
* @param _delegate The address of the delegate to be set.
*/
function setDelegate(address _delegate) external;
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ILayerZeroReceiver.sol
interface ILayerZeroReceiver {
function allowInitializePath(Origin calldata _origin) external view returns (bool);
function nextNonce(uint32 _eid, bytes32 _sender) external view returns (uint64);
function lzReceive(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) external payable;
}
// node_modules/@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol
// OpenZeppelin Contracts (last updated v5.2.0) (token/ERC20/utils/SafeERC20.sol)
/**
* @title SafeERC20
* @dev Wrappers around ERC-20 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 {
/**
* @dev An operation with an ERC-20 token failed.
*/
error SafeERC20FailedOperation(address token);
/**
* @dev Indicates a failed `decreaseAllowance` request.
*/
error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);
/**
* @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, 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.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
uint256 oldAllowance = token.allowance(address(this), spender);
forceApprove(token, spender, oldAllowance + value);
}
/**
* @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
* value, non-reverting calls are assumed to be successful.
*
* IMPORTANT: If the token implements ERC-7674 (ERC-20 with temporary allowance), and if the "client"
* smart contract uses ERC-7674 to set temporary allowances, then the "client" smart contract should avoid using
* this function. Performing a {safeIncreaseAllowance} or {safeDecreaseAllowance} operation on a token contract
* that has a non-zero temporary allowance (for that particular owner-spender) will result in unexpected behavior.
*/
function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
unchecked {
uint256 currentAllowance = token.allowance(address(this), spender);
if (currentAllowance < requestedDecrease) {
revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
}
forceApprove(token, spender, currentAllowance - requestedDecrease);
}
}
/**
* @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.
*
* NOTE: If the token implements ERC-7674, this function will not modify any temporary allowance. This function
* only sets the "standard" allowance. Any temporary allowance will remain active, in addition to the value being
* set here.
*/
function forceApprove(IERC20 token, address spender, uint256 value) internal {
bytes memory approvalCall = abi.encodeCall(token.approve, (spender, value));
if (!_callOptionalReturnBool(token, approvalCall)) {
_callOptionalReturn(token, abi.encodeCall(token.approve, (spender, 0)));
_callOptionalReturn(token, approvalCall);
}
}
/**
* @dev Performs an {ERC1363} transferAndCall, with a fallback to the simple {ERC20} transfer if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
safeTransfer(token, to, value);
} else if (!token.transferAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} transferFromAndCall, with a fallback to the simple {ERC20} transferFrom if the target
* has no code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* Reverts if the returned value is other than `true`.
*/
function transferFromAndCallRelaxed(
IERC1363 token,
address from,
address to,
uint256 value,
bytes memory data
) internal {
if (to.code.length == 0) {
safeTransferFrom(token, from, to, value);
} else if (!token.transferFromAndCall(from, to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @dev Performs an {ERC1363} approveAndCall, with a fallback to the simple {ERC20} approve if the target has no
* code. This can be used to implement an {ERC721}-like safe transfer that rely on {ERC1363} checks when
* targeting contracts.
*
* NOTE: When the recipient address (`to`) has no code (i.e. is an EOA), this function behaves as {forceApprove}.
* Opposedly, when the recipient address (`to`) has code, this function only attempts to call {ERC1363-approveAndCall}
* once without retrying, and relies on the returned value to be true.
*
* Reverts if the returned value is other than `true`.
*/
function approveAndCallRelaxed(IERC1363 token, address to, uint256 value, bytes memory data) internal {
if (to.code.length == 0) {
forceApprove(token, to, value);
} else if (!token.approveAndCall(to, value, data)) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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 {_callOptionalReturnBool} that reverts if call fails to meet the requirements.
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
let success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
// bubble errors
if iszero(success) {
let ptr := mload(0x40)
returndatacopy(ptr, 0, returndatasize())
revert(ptr, returndatasize())
}
returnSize := returndatasize()
returnValue := mload(0)
}
if (returnSize == 0 ? address(token).code.length == 0 : returnValue != 1) {
revert SafeERC20FailedOperation(address(token));
}
}
/**
* @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 silently catches all reverts and returns a bool instead.
*/
function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
bool success;
uint256 returnSize;
uint256 returnValue;
assembly ("memory-safe") {
success := call(gas(), token, 0, add(data, 0x20), mload(data), 0, 0x20)
returnSize := returndatasize()
returnValue := mload(0)
}
return success && (returnSize == 0 ? address(token).code.length > 0 : returnValue == 1);
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/interfaces/IOAppReceiver.sol
interface IOAppReceiver is ILayerZeroReceiver {
/**
* @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.
* @param _origin The origin information containing the source endpoint and sender address.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address on the src chain.
* - nonce: The nonce of the message.
* @param _message The lzReceive payload.
* @param _sender The sender address.
* @return isSender Is a valid sender.
*
* @dev Applications can optionally choose to implement a separate composeMsg sender that is NOT the bridging layer.
* @dev The default sender IS the OAppReceiver implementer.
*/
function isComposeMsgSender(
Origin calldata _origin,
bytes calldata _message,
address _sender
) external view returns (bool isSender);
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/interfaces/ISendLib.sol
struct Packet {
uint64 nonce;
uint32 srcEid;
address sender;
uint32 dstEid;
bytes32 receiver;
bytes32 guid;
bytes message;
}
interface ISendLib is IMessageLib {
function send(
Packet calldata _packet,
bytes calldata _options,
bool _payInLzToken
) external returns (MessagingFee memory, bytes memory encodedPacket);
function quote(
Packet calldata _packet,
bytes calldata _options,
bool _payInLzToken
) external view returns (MessagingFee memory);
function setTreasury(address _treasury) external;
function withdrawFee(address _to, uint256 _amount) external;
function withdrawLzTokenFee(address _lzToken, address _to, uint256 _amount) external;
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppCore.sol
/**
* @title OAppCore
* @dev Abstract contract implementing the IOAppCore interface with basic OApp configurations.
*/
abstract contract OAppCore is IOAppCore, Ownable {
// The LayerZero endpoint associated with the given OApp
ILayerZeroEndpointV2 public immutable endpoint;
// Mapping to store peers associated with corresponding endpoints
mapping(uint32 eid => bytes32 peer) public peers;
/**
* @dev Constructor to initialize the OAppCore with the provided endpoint and delegate.
* @param _endpoint The address of the LOCAL Layer Zero endpoint.
* @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
*
* @dev The delegate typically should be set as the owner of the contract.
*/
constructor(address _endpoint, address _delegate) {
endpoint = ILayerZeroEndpointV2(_endpoint);
if (_delegate == address(0)) revert InvalidDelegate();
endpoint.setDelegate(_delegate);
}
/**
* @notice Sets the peer address (OApp instance) for a corresponding endpoint.
* @param _eid The endpoint ID.
* @param _peer The address of the peer to be associated with the corresponding endpoint.
*
* @dev Only the owner/admin of the OApp can call this function.
* @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
* @dev Set this to bytes32(0) to remove the peer address.
* @dev Peer is a bytes32 to accommodate non-evm chains.
*/
function setPeer(uint32 _eid, bytes32 _peer) public virtual onlyOwner {
_setPeer(_eid, _peer);
}
/**
* @notice Sets the peer address (OApp instance) for a corresponding endpoint.
* @param _eid The endpoint ID.
* @param _peer The address of the peer to be associated with the corresponding endpoint.
*
* @dev Indicates that the peer is trusted to send LayerZero messages to this OApp.
* @dev Set this to bytes32(0) to remove the peer address.
* @dev Peer is a bytes32 to accommodate non-evm chains.
*/
function _setPeer(uint32 _eid, bytes32 _peer) internal virtual {
peers[_eid] = _peer;
emit PeerSet(_eid, _peer);
}
/**
* @notice Internal function to get the peer address associated with a specific endpoint; reverts if NOT set.
* ie. the peer is set to bytes32(0).
* @param _eid The endpoint ID.
* @return peer The address of the peer associated with the specified endpoint.
*/
function _getPeerOrRevert(uint32 _eid) internal view virtual returns (bytes32) {
bytes32 peer = peers[_eid];
if (peer == bytes32(0)) revert NoPeer(_eid);
return peer;
}
/**
* @notice Sets the delegate address for the OApp.
* @param _delegate The address of the delegate to be set.
*
* @dev Only the owner/admin of the OApp can call this function.
* @dev Provides the ability for a delegate to set configs, on behalf of the OApp, directly on the Endpoint contract.
*/
function setDelegate(address _delegate) public onlyOwner {
endpoint.setDelegate(_delegate);
}
}
// node_modules/@layerzerolabs/lz-evm-protocol-v2/contracts/messagelib/libs/PacketV1Codec.sol
library PacketV1Codec {
using AddressCast for address;
using AddressCast for bytes32;
uint8 internal constant PACKET_VERSION = 1;
// header (version + nonce + path)
// version
uint256 private constant PACKET_VERSION_OFFSET = 0;
// nonce
uint256 private constant NONCE_OFFSET = 1;
// path
uint256 private constant SRC_EID_OFFSET = 9;
uint256 private constant SENDER_OFFSET = 13;
uint256 private constant DST_EID_OFFSET = 45;
uint256 private constant RECEIVER_OFFSET = 49;
// payload (guid + message)
uint256 private constant GUID_OFFSET = 81; // keccak256(nonce + path)
uint256 private constant MESSAGE_OFFSET = 113;
function encode(Packet memory _packet) internal pure returns (bytes memory encodedPacket) {
encodedPacket = abi.encodePacked(
PACKET_VERSION,
_packet.nonce,
_packet.srcEid,
_packet.sender.toBytes32(),
_packet.dstEid,
_packet.receiver,
_packet.guid,
_packet.message
);
}
function encodePacketHeader(Packet memory _packet) internal pure returns (bytes memory) {
return
abi.encodePacked(
PACKET_VERSION,
_packet.nonce,
_packet.srcEid,
_packet.sender.toBytes32(),
_packet.dstEid,
_packet.receiver
);
}
function encodePayload(Packet memory _packet) internal pure returns (bytes memory) {
return abi.encodePacked(_packet.guid, _packet.message);
}
function header(bytes calldata _packet) internal pure returns (bytes calldata) {
return _packet[0:GUID_OFFSET];
}
function version(bytes calldata _packet) internal pure returns (uint8) {
return uint8(bytes1(_packet[PACKET_VERSION_OFFSET:NONCE_OFFSET]));
}
function nonce(bytes calldata _packet) internal pure returns (uint64) {
return uint64(bytes8(_packet[NONCE_OFFSET:SRC_EID_OFFSET]));
}
function srcEid(bytes calldata _packet) internal pure returns (uint32) {
return uint32(bytes4(_packet[SRC_EID_OFFSET:SENDER_OFFSET]));
}
function sender(bytes calldata _packet) internal pure returns (bytes32) {
return bytes32(_packet[SENDER_OFFSET:DST_EID_OFFSET]);
}
function senderAddressB20(bytes calldata _packet) internal pure returns (address) {
return sender(_packet).toAddress();
}
function dstEid(bytes calldata _packet) internal pure returns (uint32) {
return uint32(bytes4(_packet[DST_EID_OFFSET:RECEIVER_OFFSET]));
}
function receiver(bytes calldata _packet) internal pure returns (bytes32) {
return bytes32(_packet[RECEIVER_OFFSET:GUID_OFFSET]);
}
function receiverB20(bytes calldata _packet) internal pure returns (address) {
return receiver(_packet).toAddress();
}
function guid(bytes calldata _packet) internal pure returns (bytes32) {
return bytes32(_packet[GUID_OFFSET:MESSAGE_OFFSET]);
}
function message(bytes calldata _packet) internal pure returns (bytes calldata) {
return bytes(_packet[MESSAGE_OFFSET:]);
}
function payload(bytes calldata _packet) internal pure returns (bytes calldata) {
return bytes(_packet[GUID_OFFSET:]);
}
function payloadHash(bytes calldata _packet) internal pure returns (bytes32) {
return keccak256(payload(_packet));
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/libs/Packet.sol
/**
* @title InboundPacket
* @dev Structure representing an inbound packet received by the contract.
*/
struct InboundPacket {
Origin origin; // Origin information of the packet.
uint32 dstEid; // Destination endpointId of the packet.
address receiver; // Receiver address for the packet.
bytes32 guid; // Unique identifier of the packet.
uint256 value; // msg.value of the packet.
address executor; // Executor address for the packet.
bytes message; // Message payload of the packet.
bytes extraData; // Additional arbitrary data for the packet.
}
/**
* @title PacketDecoder
* @dev Library for decoding LayerZero packets.
*/
library PacketDecoder {
using PacketV1Codec for bytes;
/**
* @dev Decode an inbound packet from the given packet data.
* @param _packet The packet data to decode.
* @return packet An InboundPacket struct representing the decoded packet.
*/
function decode(bytes calldata _packet) internal pure returns (InboundPacket memory packet) {
packet.origin = Origin(_packet.srcEid(), _packet.sender(), _packet.nonce());
packet.dstEid = _packet.dstEid();
packet.receiver = _packet.receiverB20();
packet.guid = _packet.guid();
packet.message = _packet.message();
}
/**
* @dev Decode multiple inbound packets from the given packet data and associated message values.
* @param _packets An array of packet data to decode.
* @param _packetMsgValues An array of associated message values for each packet.
* @return packets An array of InboundPacket structs representing the decoded packets.
*/
function decode(
bytes[] calldata _packets,
uint256[] memory _packetMsgValues
) internal pure returns (InboundPacket[] memory packets) {
packets = new InboundPacket[](_packets.length);
for (uint256 i = 0; i < _packets.length; i++) {
bytes calldata packet = _packets[i];
packets[i] = PacketDecoder.decode(packet);
// @dev Allows the verifier to specify the msg.value that gets passed in lzReceive.
packets[i].value = _packetMsgValues[i];
}
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppReceiver.sol
/**
* @title OAppReceiver
* @dev Abstract contract implementing the ILayerZeroReceiver interface and extending OAppCore for OApp receivers.
*/
abstract contract OAppReceiver is IOAppReceiver, OAppCore {
// Custom error message for when the caller is not the registered endpoint/
error OnlyEndpoint(address addr);
// @dev The version of the OAppReceiver implementation.
// @dev Version is bumped when changes are made to this contract.
uint64 internal constant RECEIVER_VERSION = 2;
/**
* @notice Retrieves the OApp version information.
* @return senderVersion The version of the OAppSender.sol contract.
* @return receiverVersion The version of the OAppReceiver.sol contract.
*
* @dev Providing 0 as the default for OAppSender version. Indicates that the OAppSender is not implemented.
* ie. this is a RECEIVE only OApp.
* @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions.
*/
function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {
return (0, RECEIVER_VERSION);
}
/**
* @notice Indicates whether an address is an approved composeMsg sender to the Endpoint.
* @dev _origin The origin information containing the source endpoint and sender address.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address on the src chain.
* - nonce: The nonce of the message.
* @dev _message The lzReceive payload.
* @param _sender The sender address.
* @return isSender Is a valid sender.
*
* @dev Applications can optionally choose to implement separate composeMsg senders that are NOT the bridging layer.
* @dev The default sender IS the OAppReceiver implementer.
*/
function isComposeMsgSender(
Origin calldata /*_origin*/,
bytes calldata /*_message*/,
address _sender
) public view virtual returns (bool) {
return _sender == address(this);
}
/**
* @notice Checks if the path initialization is allowed based on the provided origin.
* @param origin The origin information containing the source endpoint and sender address.
* @return Whether the path has been initialized.
*
* @dev This indicates to the endpoint that the OApp has enabled msgs for this particular path to be received.
* @dev This defaults to assuming if a peer has been set, its initialized.
* Can be overridden by the OApp if there is other logic to determine this.
*/
function allowInitializePath(Origin calldata origin) public view virtual returns (bool) {
return peers[origin.srcEid] == origin.sender;
}
/**
* @notice Retrieves the next nonce for a given source endpoint and sender address.
* @dev _srcEid The source endpoint ID.
* @dev _sender The sender address.
* @return nonce The next nonce.
*
* @dev The path nonce starts from 1. If 0 is returned it means that there is NO nonce ordered enforcement.
* @dev Is required by the off-chain executor to determine the OApp expects msg execution is ordered.
* @dev This is also enforced by the OApp.
* @dev By default this is NOT enabled. ie. nextNonce is hardcoded to return 0.
*/
function nextNonce(uint32 /*_srcEid*/, bytes32 /*_sender*/) public view virtual returns (uint64 nonce) {
return 0;
}
/**
* @dev Entry point for receiving messages or packets from the endpoint.
* @param _origin The origin information containing the source endpoint and sender address.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address on the src chain.
* - nonce: The nonce of the message.
* @param _guid The unique identifier for the received LayerZero message.
* @param _message The payload of the received message.
* @param _executor The address of the executor for the received message.
* @param _extraData Additional arbitrary data provided by the corresponding executor.
*
* @dev Entry point for receiving msg/packet from the LayerZero endpoint.
*/
function lzReceive(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) public payable virtual {
// Ensures that only the endpoint can attempt to lzReceive() messages to this OApp.
if (address(endpoint) != msg.sender) revert OnlyEndpoint(msg.sender);
// Ensure that the sender matches the expected peer for the source endpoint.
if (_getPeerOrRevert(_origin.srcEid) != _origin.sender) revert OnlyPeer(_origin.srcEid, _origin.sender);
// Call the internal OApp implementation of lzReceive.
_lzReceive(_origin, _guid, _message, _executor, _extraData);
}
/**
* @dev Internal function to implement lzReceive logic without needing to copy the basic parameter validation.
*/
function _lzReceive(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) internal virtual;
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/interfaces/IOAppPreCrimeSimulator.sol
// @dev Import the Origin so it's exposed to OAppPreCrimeSimulator implementers.
// solhint-disable-next-line no-unused-import
/**
* @title IOAppPreCrimeSimulator Interface
* @dev Interface for the preCrime simulation functionality in an OApp.
*/
interface IOAppPreCrimeSimulator {
// @dev simulation result used in PreCrime implementation
error SimulationResult(bytes result);
error OnlySelf();
/**
* @dev Emitted when the preCrime contract address is set.
* @param preCrimeAddress The address of the preCrime contract.
*/
event PreCrimeSet(address preCrimeAddress);
/**
* @dev Retrieves the address of the preCrime contract implementation.
* @return The address of the preCrime contract.
*/
function preCrime() external view returns (address);
/**
* @dev Retrieves the address of the OApp contract.
* @return The address of the OApp contract.
*/
function oApp() external view returns (address);
/**
* @dev Sets the preCrime contract address.
* @param _preCrime The address of the preCrime contract.
*/
function setPreCrime(address _preCrime) external;
/**
* @dev Mocks receiving a packet, then reverts with a series of data to infer the state/result.
* @param _packets An array of LayerZero InboundPacket objects representing received packets.
*/
function lzReceiveAndRevert(InboundPacket[] calldata _packets) external payable;
/**
* @dev checks if the specified peer is considered 'trusted' by the OApp.
* @param _eid The endpoint Id to check.
* @param _peer The peer to check.
* @return Whether the peer passed is considered 'trusted' by the OApp.
*/
function isPeer(uint32 _eid, bytes32 _peer) external view returns (bool);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OAppSender.sol
/**
* @title OAppSender
* @dev Abstract contract implementing the OAppSender functionality for sending messages to a LayerZero endpoint.
*/
abstract contract OAppSender is OAppCore {
using SafeERC20 for IERC20;
// Custom error messages
error NotEnoughNative(uint256 msgValue);
error LzTokenUnavailable();
// @dev The version of the OAppSender implementation.
// @dev Version is bumped when changes are made to this contract.
uint64 internal constant SENDER_VERSION = 1;
/**
* @notice Retrieves the OApp version information.
* @return senderVersion The version of the OAppSender.sol contract.
* @return receiverVersion The version of the OAppReceiver.sol contract.
*
* @dev Providing 0 as the default for OAppReceiver version. Indicates that the OAppReceiver is not implemented.
* ie. this is a SEND only OApp.
* @dev If the OApp uses both OAppSender and OAppReceiver, then this needs to be override returning the correct versions
*/
function oAppVersion() public view virtual returns (uint64 senderVersion, uint64 receiverVersion) {
return (SENDER_VERSION, 0);
}
/**
* @dev Internal function to interact with the LayerZero EndpointV2.quote() for fee calculation.
* @param _dstEid The destination endpoint ID.
* @param _message The message payload.
* @param _options Additional options for the message.
* @param _payInLzToken Flag indicating whether to pay the fee in LZ tokens.
* @return fee The calculated MessagingFee for the message.
* - nativeFee: The native fee for the message.
* - lzTokenFee: The LZ token fee for the message.
*/
function _quote(
uint32 _dstEid,
bytes memory _message,
bytes memory _options,
bool _payInLzToken
) internal view virtual returns (MessagingFee memory fee) {
return
endpoint.quote(
MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _payInLzToken),
address(this)
);
}
/**
* @dev Internal function to interact with the LayerZero EndpointV2.send() for sending a message.
* @param _dstEid The destination endpoint ID.
* @param _message The message payload.
* @param _options Additional options for the message.
* @param _fee The calculated LayerZero fee for the message.
* - nativeFee: The native fee.
* - lzTokenFee: The lzToken fee.
* @param _refundAddress The address to receive any excess fee values sent to the endpoint.
* @return receipt The receipt for the sent message.
* - guid: The unique identifier for the sent message.
* - nonce: The nonce of the sent message.
* - fee: The LayerZero fee incurred for the message.
*/
function _lzSend(
uint32 _dstEid,
bytes memory _message,
bytes memory _options,
MessagingFee memory _fee,
address _refundAddress
) internal virtual returns (MessagingReceipt memory receipt) {
// @dev Push corresponding fees to the endpoint, any excess is sent back to the _refundAddress from the endpoint.
uint256 messageValue = _payNative(_fee.nativeFee);
if (_fee.lzTokenFee > 0) _payLzToken(_fee.lzTokenFee);
return
// solhint-disable-next-line check-send-result
endpoint.send{ value: messageValue }(
MessagingParams(_dstEid, _getPeerOrRevert(_dstEid), _message, _options, _fee.lzTokenFee > 0),
_refundAddress
);
}
/**
* @dev Internal function to pay the native fee associated with the message.
* @param _nativeFee The native fee to be paid.
* @return nativeFee The amount of native currency paid.
*
* @dev If the OApp needs to initiate MULTIPLE LayerZero messages in a single transaction,
* this will need to be overridden because msg.value would contain multiple lzFees.
* @dev Should be overridden in the event the LayerZero endpoint requires a different native currency.
* @dev Some EVMs use an ERC20 as a method for paying transactions/gasFees.
* @dev The endpoint is EITHER/OR, ie. it will NOT support both types of native payment at a time.
*/
function _payNative(uint256 _nativeFee) internal virtual returns (uint256 nativeFee) {
if (msg.value != _nativeFee) revert NotEnoughNative(msg.value);
return _nativeFee;
}
/**
* @dev Internal function to pay the LZ token fee associated with the message.
* @param _lzTokenFee The LZ token fee to be paid.
*
* @dev If the caller is trying to pay in the specified lzToken, then the lzTokenFee is passed to the endpoint.
* @dev Any excess sent, is passed back to the specified _refundAddress in the _lzSend().
*/
function _payLzToken(uint256 _lzTokenFee) internal virtual {
// @dev Cannot cache the token because it is not immutable in the endpoint.
address lzToken = endpoint.lzToken();
if (lzToken == address(0)) revert LzTokenUnavailable();
// Pay LZ token fee by sending tokens to the endpoint.
IERC20(lzToken).safeTransferFrom(msg.sender, address(endpoint), _lzTokenFee);
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/precrime/OAppPreCrimeSimulator.sol
/**
* @title OAppPreCrimeSimulator
* @dev Abstract contract serving as the base for preCrime simulation functionality in an OApp.
*/
abstract contract OAppPreCrimeSimulator is IOAppPreCrimeSimulator, Ownable {
// The address of the preCrime implementation.
address public preCrime;
/**
* @dev Retrieves the address of the OApp contract.
* @return The address of the OApp contract.
*
* @dev The simulator contract is the base contract for the OApp by default.
* @dev If the simulator is a separate contract, override this function.
*/
function oApp() external view virtual returns (address) {
return address(this);
}
/**
* @dev Sets the preCrime contract address.
* @param _preCrime The address of the preCrime contract.
*/
function setPreCrime(address _preCrime) public virtual onlyOwner {
preCrime = _preCrime;
emit PreCrimeSet(_preCrime);
}
/**
* @dev Interface for pre-crime simulations. Always reverts at the end with the simulation results.
* @param _packets An array of InboundPacket objects representing received packets to be delivered.
*
* @dev WARNING: MUST revert at the end with the simulation results.
* @dev Gives the preCrime implementation the ability to mock sending packets to the lzReceive function,
* WITHOUT actually executing them.
*/
function lzReceiveAndRevert(InboundPacket[] calldata _packets) public payable virtual {
for (uint256 i = 0; i < _packets.length; i++) {
InboundPacket calldata packet = _packets[i];
// Ignore packets that are not from trusted peers.
if (!isPeer(packet.origin.srcEid, packet.origin.sender)) continue;
// @dev Because a verifier is calling this function, it doesnt have access to executor params:
// - address _executor
// - bytes calldata _extraData
// preCrime will NOT work for OApps that rely on these two parameters inside of their _lzReceive().
// They are instead stubbed to default values, address(0) and bytes("")
// @dev Calling this.lzReceiveSimulate removes ability for assembly return 0 callstack exit,
// which would cause the revert to be ignored.
this.lzReceiveSimulate{ value: packet.value }(
packet.origin,
packet.guid,
packet.message,
packet.executor,
packet.extraData
);
}
// @dev Revert with the simulation results. msg.sender must implement IPreCrime.buildSimulationResult().
revert SimulationResult(IPreCrime(msg.sender).buildSimulationResult());
}
/**
* @dev Is effectively an internal function because msg.sender must be address(this).
* Allows resetting the call stack for 'internal' calls.
* @param _origin The origin information containing the source endpoint and sender address.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address on the src chain.
* - nonce: The nonce of the message.
* @param _guid The unique identifier of the packet.
* @param _message The message payload of the packet.
* @param _executor The executor address for the packet.
* @param _extraData Additional data for the packet.
*/
function lzReceiveSimulate(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) external payable virtual {
// @dev Ensure ONLY can be called 'internally'.
if (msg.sender != address(this)) revert OnlySelf();
_lzReceiveSimulate(_origin, _guid, _message, _executor, _extraData);
}
/**
* @dev Internal function to handle the OAppPreCrimeSimulator simulated receive.
* @param _origin The origin information.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address from the src chain.
* - nonce: The nonce of the LayerZero message.
* @param _guid The GUID of the LayerZero message.
* @param _message The LayerZero message.
* @param _executor The address of the off-chain executor.
* @param _extraData Arbitrary data passed by the msg executor.
*
* @dev Enables the preCrime simulator to mock sending lzReceive() messages,
* routes the msg down from the OAppPreCrimeSimulator, and back up to the OAppReceiver.
*/
function _lzReceiveSimulate(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) internal virtual;
/**
* @dev checks if the specified peer is considered 'trusted' by the OApp.
* @param _eid The endpoint Id to check.
* @param _peer The peer to check.
* @return Whether the peer passed is considered 'trusted' by the OApp.
*/
function isPeer(uint32 _eid, bytes32 _peer) public view virtual returns (bool);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oft/interfaces/IOFT.sol
/**
* @dev Struct representing token parameters for the OFT send() operation.
*/
struct SendParam {
uint32 dstEid; // Destination endpoint ID.
bytes32 to; // Recipient address.
uint256 amountLD; // Amount to send in local decimals.
uint256 minAmountLD; // Minimum amount to send in local decimals.
bytes extraOptions; // Additional options supplied by the caller to be used in the LayerZero message.
bytes composeMsg; // The composed message for the send() operation.
bytes oftCmd; // The OFT command to be executed, unused in default OFT implementations.
}
/**
* @dev Struct representing OFT limit information.
* @dev These amounts can change dynamically and are up the the specific oft implementation.
*/
struct OFTLimit {
uint256 minAmountLD; // Minimum amount in local decimals that can be sent to the recipient.
uint256 maxAmountLD; // Maximum amount in local decimals that can be sent to the recipient.
}
/**
* @dev Struct representing OFT receipt information.
*/
struct OFTReceipt {
uint256 amountSentLD; // Amount of tokens ACTUALLY debited from the sender in local decimals.
// @dev In non-default implementations, the amountReceivedLD COULD differ from this value.
uint256 amountReceivedLD; // Amount of tokens to be received on the remote side.
}
/**
* @dev Struct representing OFT fee details.
* @dev Future proof mechanism to provide a standardized way to communicate fees to things like a UI.
*/
struct OFTFeeDetail {
int256 feeAmountLD; // Amount of the fee in local decimals.
string description; // Description of the fee.
}
/**
* @title IOFT
* @dev Interface for the OftChain (OFT) token.
* @dev Does not inherit ERC20 to accommodate usage by OFTAdapter as well.
* @dev This specific interface ID is '0x02e49c2c'.
*/
interface IOFT {
// Custom error messages
error InvalidLocalDecimals();
error SlippageExceeded(uint256 amountLD, uint256 minAmountLD);
// Events
event OFTSent(
bytes32 indexed guid, // GUID of the OFT message.
uint32 dstEid, // Destination Endpoint ID.
address indexed fromAddress, // Address of the sender on the src chain.
uint256 amountSentLD, // Amount of tokens sent in local decimals.
uint256 amountReceivedLD // Amount of tokens received in local decimals.
);
event OFTReceived(
bytes32 indexed guid, // GUID of the OFT message.
uint32 srcEid, // Source Endpoint ID.
address indexed toAddress, // Address of the recipient on the dst chain.
uint256 amountReceivedLD // Amount of tokens received in local decimals.
);
/**
* @notice Retrieves interfaceID and the version of the OFT.
* @return interfaceId The interface ID.
* @return version The version.
*
* @dev interfaceId: This specific interface ID is '0x02e49c2c'.
* @dev version: Indicates a cross-chain compatible msg encoding with other OFTs.
* @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented.
* ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1)
*/
function oftVersion() external view returns (bytes4 interfaceId, uint64 version);
/**
* @notice Retrieves the address of the token associated with the OFT.
* @return token The address of the ERC20 token implementation.
*/
function token() external view returns (address);
/**
* @notice Indicates whether the OFT contract requires approval of the 'token()' to send.
* @return requiresApproval Needs approval of the underlying token implementation.
*
* @dev Allows things like wallet implementers to determine integration requirements,
* without understanding the underlying token implementation.
*/
function approvalRequired() external view returns (bool);
/**
* @notice Retrieves the shared decimals of the OFT.
* @return sharedDecimals The shared decimals of the OFT.
*/
function sharedDecimals() external view returns (uint8);
/**
* @notice Provides a quote for OFT-related operations.
* @param _sendParam The parameters for the send operation.
* @return limit The OFT limit information.
* @return oftFeeDetails The details of OFT fees.
* @return receipt The OFT receipt information.
*/
function quoteOFT(
SendParam calldata _sendParam
) external view returns (OFTLimit memory, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory);
/**
* @notice Provides a quote for the send() operation.
* @param _sendParam The parameters for the send() operation.
* @param _payInLzToken Flag indicating whether the caller is paying in the LZ token.
* @return fee The calculated LayerZero messaging fee from the send() operation.
*
* @dev MessagingFee: LayerZero msg fee
* - nativeFee: The native fee.
* - lzTokenFee: The lzToken fee.
*/
function quoteSend(SendParam calldata _sendParam, bool _payInLzToken) external view returns (MessagingFee memory);
/**
* @notice Executes the send() operation.
* @param _sendParam The parameters for the send operation.
* @param _fee The fee information supplied by the caller.
* - nativeFee: The native fee.
* - lzTokenFee: The lzToken fee.
* @param _refundAddress The address to receive any excess funds from fees etc. on the src.
* @return receipt The LayerZero messaging receipt from the send() operation.
* @return oftReceipt The OFT receipt information.
*
* @dev MessagingReceipt: LayerZero msg receipt
* - guid: The unique identifier for the sent message.
* - nonce: The nonce of the sent message.
* - fee: The LayerZero fee incurred for the message.
*/
function send(
SendParam calldata _sendParam,
MessagingFee calldata _fee,
address _refundAddress
) external payable returns (MessagingReceipt memory, OFTReceipt memory);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oapp/OApp.sol
// @dev Import the 'MessagingFee' and 'MessagingReceipt' so it's exposed to OApp implementers
// solhint-disable-next-line no-unused-import
// @dev Import the 'Origin' so it's exposed to OApp implementers
// solhint-disable-next-line no-unused-import
/**
* @title OApp
* @dev Abstract contract serving as the base for OApp implementation, combining OAppSender and OAppReceiver functionality.
*/
abstract contract OApp is OAppSender, OAppReceiver {
/**
* @dev Constructor to initialize the OApp with the provided endpoint and owner.
* @param _endpoint The address of the LOCAL LayerZero endpoint.
* @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
*/
constructor(address _endpoint, address _delegate) OAppCore(_endpoint, _delegate) {}
/**
* @notice Retrieves the OApp version information.
* @return senderVersion The version of the OAppSender.sol implementation.
* @return receiverVersion The version of the OAppReceiver.sol implementation.
*/
function oAppVersion()
public
pure
virtual
override(OAppSender, OAppReceiver)
returns (uint64 senderVersion, uint64 receiverVersion)
{
return (SENDER_VERSION, RECEIVER_VERSION);
}
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oft/OFTCore.sol
/**
* @title OFTCore
* @dev Abstract contract for the OftChain (OFT) token.
*/
abstract contract OFTCore is IOFT, OApp, OAppPreCrimeSimulator, OAppOptionsType3 {
using OFTMsgCodec for bytes;
using OFTMsgCodec for bytes32;
// @notice Provides a conversion rate when swapping between denominations of SD and LD
// - shareDecimals == SD == shared Decimals
// - localDecimals == LD == local decimals
// @dev Considers that tokens have different decimal amounts on various chains.
// @dev eg.
// For a token
// - locally with 4 decimals --> 1.2345 => uint(12345)
// - remotely with 2 decimals --> 1.23 => uint(123)
// - The conversion rate would be 10 ** (4 - 2) = 100
// @dev If you want to send 1.2345 -> (uint 12345), you CANNOT represent that value on the remote,
// you can only display 1.23 -> uint(123).
// @dev To preserve the dust that would otherwise be lost on that conversion,
// we need to unify a denomination that can be represented on ALL chains inside of the OFT mesh
uint256 public immutable decimalConversionRate;
// @notice Msg types that are used to identify the various OFT operations.
// @dev This can be extended in child contracts for non-default oft operations
// @dev These values are used in things like combineOptions() in OAppOptionsType3.sol.
uint16 public constant SEND = 1;
uint16 public constant SEND_AND_CALL = 2;
// Address of an optional contract to inspect both 'message' and 'options'
address public msgInspector;
event MsgInspectorSet(address inspector);
/**
* @dev Constructor.
* @param _localDecimals The decimals of the token on the local chain (this chain).
* @param _endpoint The address of the LayerZero endpoint.
* @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
*/
constructor(uint8 _localDecimals, address _endpoint, address _delegate) OApp(_endpoint, _delegate) {
if (_localDecimals < sharedDecimals()) revert InvalidLocalDecimals();
decimalConversionRate = 10 ** (_localDecimals - sharedDecimals());
}
/**
* @notice Retrieves interfaceID and the version of the OFT.
* @return interfaceId The interface ID.
* @return version The version.
*
* @dev interfaceId: This specific interface ID is '0x02e49c2c'.
* @dev version: Indicates a cross-chain compatible msg encoding with other OFTs.
* @dev If a new feature is added to the OFT cross-chain msg encoding, the version will be incremented.
* ie. localOFT version(x,1) CAN send messages to remoteOFT version(x,1)
*/
function oftVersion() external pure virtual returns (bytes4 interfaceId, uint64 version) {
return (type(IOFT).interfaceId, 1);
}
/**
* @dev Retrieves the shared decimals of the OFT.
* @return The shared decimals of the OFT.
*
* @dev Sets an implicit cap on the amount of tokens, over uint64.max() will need some sort of outbound cap / totalSupply cap
* Lowest common decimal denominator between chains.
* Defaults to 6 decimal places to provide up to 18,446,744,073,709.551615 units (max uint64).
* For tokens exceeding this totalSupply(), they will need to override the sharedDecimals function with something smaller.
* ie. 4 sharedDecimals would be 1,844,674,407,370,955.1615
*/
function sharedDecimals() public view virtual returns (uint8) {
return 6;
}
/**
* @dev Sets the message inspector address for the OFT.
* @param _msgInspector The address of the message inspector.
*
* @dev This is an optional contract that can be used to inspect both 'message' and 'options'.
* @dev Set it to address(0) to disable it, or set it to a contract address to enable it.
*/
function setMsgInspector(address _msgInspector) public virtual onlyOwner {
msgInspector = _msgInspector;
emit MsgInspectorSet(_msgInspector);
}
/**
* @notice Provides a quote for OFT-related operations.
* @param _sendParam The parameters for the send operation.
* @return oftLimit The OFT limit information.
* @return oftFeeDetails The details of OFT fees.
* @return oftReceipt The OFT receipt information.
*/
function quoteOFT(
SendParam calldata _sendParam
)
external
view
virtual
returns (OFTLimit memory oftLimit, OFTFeeDetail[] memory oftFeeDetails, OFTReceipt memory oftReceipt)
{
uint256 minAmountLD = 0; // Unused in the default implementation.
uint256 maxAmountLD = type(uint64).max; // Unused in the default implementation.
oftLimit = OFTLimit(minAmountLD, maxAmountLD);
// Unused in the default implementation; reserved for future complex fee details.
oftFeeDetails = new OFTFeeDetail[](0);
// @dev This is the same as the send() operation, but without the actual send.
// - amountSentLD is the amount in local decimals that would be sent from the sender.
// - amountReceivedLD is the amount in local decimals that will be credited to the recipient on the remote OFT instance.
// @dev The amountSentLD MIGHT not equal the amount the user actually receives. HOWEVER, the default does.
(uint256 amountSentLD, uint256 amountReceivedLD) = _debitView(
_sendParam.amountLD,
_sendParam.minAmountLD,
_sendParam.dstEid
);
oftReceipt = OFTReceipt(amountSentLD, amountReceivedLD);
}
/**
* @notice Provides a quote for the send() operation.
* @param _sendParam The parameters for the send() operation.
* @param _payInLzToken Flag indicating whether the caller is paying in the LZ token.
* @return msgFee The calculated LayerZero messaging fee from the send() operation.
*
* @dev MessagingFee: LayerZero msg fee
* - nativeFee: The native fee.
* - lzTokenFee: The lzToken fee.
*/
function quoteSend(
SendParam calldata _sendParam,
bool _payInLzToken
) external view virtual returns (MessagingFee memory msgFee) {
// @dev mock the amount to receive, this is the same operation used in the send().
// The quote is as similar as possible to the actual send() operation.
(, uint256 amountReceivedLD) = _debitView(_sendParam.amountLD, _sendParam.minAmountLD, _sendParam.dstEid);
// @dev Builds the options and OFT message to quote in the endpoint.
(bytes memory message, bytes memory options) = _buildMsgAndOptions(_sendParam, amountReceivedLD);
// @dev Calculates the LayerZero fee for the send() operation.
return _quote(_sendParam.dstEid, message, options, _payInLzToken);
}
/**
* @dev Executes the send operation.
* @param _sendParam The parameters for the send operation.
* @param _fee The calculated fee for the send() operation.
* - nativeFee: The native fee.
* - lzTokenFee: The lzToken fee.
* @param _refundAddress The address to receive any excess funds.
* @return msgReceipt The receipt for the send operation.
* @return oftReceipt The OFT receipt information.
*
* @dev MessagingReceipt: LayerZero msg receipt
* - guid: The unique identifier for the sent message.
* - nonce: The nonce of the sent message.
* - fee: The LayerZero fee incurred for the message.
*/
function send(
SendParam calldata _sendParam,
MessagingFee calldata _fee,
address _refundAddress
) external payable virtual returns (MessagingReceipt memory msgReceipt, OFTReceipt memory oftReceipt) {
// @dev Applies the token transfers regarding this send() operation.
// - amountSentLD is the amount in local decimals that was ACTUALLY sent/debited from the sender.
// - amountReceivedLD is the amount in local decimals that will be received/credited to the recipient on the remote OFT instance.
(uint256 amountSentLD, uint256 amountReceivedLD) = _debit(
msg.sender,
_sendParam.amountLD,
_sendParam.minAmountLD,
_sendParam.dstEid
);
// @dev Builds the options and OFT message to quote in the endpoint.
(bytes memory message, bytes memory options) = _buildMsgAndOptions(_sendParam, amountReceivedLD);
// @dev Sends the message to the LayerZero endpoint and returns the LayerZero msg receipt.
msgReceipt = _lzSend(_sendParam.dstEid, message, options, _fee, _refundAddress);
// @dev Formulate the OFT receipt.
oftReceipt = OFTReceipt(amountSentLD, amountReceivedLD);
emit OFTSent(msgReceipt.guid, _sendParam.dstEid, msg.sender, amountSentLD, amountReceivedLD);
}
/**
* @dev Internal function to build the message and options.
* @param _sendParam The parameters for the send() operation.
* @param _amountLD The amount in local decimals.
* @return message The encoded message.
* @return options The encoded options.
*/
function _buildMsgAndOptions(
SendParam calldata _sendParam,
uint256 _amountLD
) internal view virtual returns (bytes memory message, bytes memory options) {
bool hasCompose;
// @dev This generated message has the msg.sender encoded into the payload so the remote knows who the caller is.
(message, hasCompose) = OFTMsgCodec.encode(
_sendParam.to,
_toSD(_amountLD),
// @dev Must be include a non empty bytes if you want to compose, EVEN if you dont need it on the remote.
// EVEN if you dont require an arbitrary payload to be sent... eg. '0x01'
_sendParam.composeMsg
);
// @dev Change the msg type depending if its composed or not.
uint16 msgType = hasCompose ? SEND_AND_CALL : SEND;
// @dev Combine the callers _extraOptions with the enforced options via the OAppOptionsType3.
options = combineOptions(_sendParam.dstEid, msgType, _sendParam.extraOptions);
// @dev Optionally inspect the message and options depending if the OApp owner has set a msg inspector.
// @dev If it fails inspection, needs to revert in the implementation. ie. does not rely on return boolean
if (msgInspector != address(0)) IOAppMsgInspector(msgInspector).inspect(message, options);
}
/**
* @dev Internal function to handle the receive on the LayerZero endpoint.
* @param _origin The origin information.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address from the src chain.
* - nonce: The nonce of the LayerZero message.
* @param _guid The unique identifier for the received LayerZero message.
* @param _message The encoded message.
* @dev _executor The address of the executor.
* @dev _extraData Additional data.
*/
function _lzReceive(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address /*_executor*/, // @dev unused in the default implementation.
bytes calldata /*_extraData*/ // @dev unused in the default implementation.
) internal virtual override {
// @dev The src sending chain doesnt know the address length on this chain (potentially non-evm)
// Thus everything is bytes32() encoded in flight.
address toAddress = _message.sendTo().bytes32ToAddress();
// @dev Credit the amountLD to the recipient and return the ACTUAL amount the recipient received in local decimals
uint256 amountReceivedLD = _credit(toAddress, _toLD(_message.amountSD()), _origin.srcEid);
if (_message.isComposed()) {
// @dev Proprietary composeMsg format for the OFT.
bytes memory composeMsg = OFTComposeMsgCodec.encode(
_origin.nonce,
_origin.srcEid,
amountReceivedLD,
_message.composeMsg()
);
// @dev Stores the lzCompose payload that will be executed in a separate tx.
// Standardizes functionality for executing arbitrary contract invocation on some non-evm chains.
// @dev The off-chain executor will listen and process the msg based on the src-chain-callers compose options passed.
// @dev The index is used when a OApp needs to compose multiple msgs on lzReceive.
// For default OFT implementation there is only 1 compose msg per lzReceive, thus its always 0.
endpoint.sendCompose(toAddress, _guid, 0 /* the index of the composed message*/, composeMsg);
}
emit OFTReceived(_guid, _origin.srcEid, toAddress, amountReceivedLD);
}
/**
* @dev Internal function to handle the OAppPreCrimeSimulator simulated receive.
* @param _origin The origin information.
* - srcEid: The source chain endpoint ID.
* - sender: The sender address from the src chain.
* - nonce: The nonce of the LayerZero message.
* @param _guid The unique identifier for the received LayerZero message.
* @param _message The LayerZero message.
* @param _executor The address of the off-chain executor.
* @param _extraData Arbitrary data passed by the msg executor.
*
* @dev Enables the preCrime simulator to mock sending lzReceive() messages,
* routes the msg down from the OAppPreCrimeSimulator, and back up to the OAppReceiver.
*/
function _lzReceiveSimulate(
Origin calldata _origin,
bytes32 _guid,
bytes calldata _message,
address _executor,
bytes calldata _extraData
) internal virtual override {
_lzReceive(_origin, _guid, _message, _executor, _extraData);
}
/**
* @dev Check if the peer is considered 'trusted' by the OApp.
* @param _eid The endpoint ID to check.
* @param _peer The peer to check.
* @return Whether the peer passed is considered 'trusted' by the OApp.
*
* @dev Enables OAppPreCrimeSimulator to check whether a potential Inbound Packet is from a trusted source.
*/
function isPeer(uint32 _eid, bytes32 _peer) public view virtual override returns (bool) {
return peers[_eid] == _peer;
}
/**
* @dev Internal function to remove dust from the given local decimal amount.
* @param _amountLD The amount in local decimals.
* @return amountLD The amount after removing dust.
*
* @dev Prevents the loss of dust when moving amounts between chains with different decimals.
* @dev eg. uint(123) with a conversion rate of 100 becomes uint(100).
*/
function _removeDust(uint256 _amountLD) internal view virtual returns (uint256 amountLD) {
return (_amountLD / decimalConversionRate) * decimalConversionRate;
}
/**
* @dev Internal function to convert an amount from shared decimals into local decimals.
* @param _amountSD The amount in shared decimals.
* @return amountLD The amount in local decimals.
*/
function _toLD(uint64 _amountSD) internal view virtual returns (uint256 amountLD) {
return _amountSD * decimalConversionRate;
}
/**
* @dev Internal function to convert an amount from local decimals into shared decimals.
* @param _amountLD The amount in local decimals.
* @return amountSD The amount in shared decimals.
*/
function _toSD(uint256 _amountLD) internal view virtual returns (uint64 amountSD) {
return uint64(_amountLD / decimalConversionRate);
}
/**
* @dev Internal function to mock the amount mutation from a OFT debit() operation.
* @param _amountLD The amount to send in local decimals.
* @param _minAmountLD The minimum amount to send in local decimals.
* @dev _dstEid The destination endpoint ID.
* @return amountSentLD The amount sent, in local decimals.
* @return amountReceivedLD The amount to be received on the remote chain, in local decimals.
*
* @dev This is where things like fees would be calculated and deducted from the amount to be received on the remote.
*/
function _debitView(
uint256 _amountLD,
uint256 _minAmountLD,
uint32 /*_dstEid*/
) internal view virtual returns (uint256 amountSentLD, uint256 amountReceivedLD) {
// @dev Remove the dust so nothing is lost on the conversion between chains with different decimals for the token.
amountSentLD = _removeDust(_amountLD);
// @dev The amount to send is the same as amount received in the default implementation.
amountReceivedLD = amountSentLD;
// @dev Check for slippage.
if (amountReceivedLD < _minAmountLD) {
revert SlippageExceeded(amountReceivedLD, _minAmountLD);
}
}
/**
* @dev Internal function to perform a debit operation.
* @param _from The address to debit.
* @param _amountLD The amount to send in local decimals.
* @param _minAmountLD The minimum amount to send in local decimals.
* @param _dstEid The destination endpoint ID.
* @return amountSentLD The amount sent in local decimals.
* @return amountReceivedLD The amount received in local decimals on the remote.
*
* @dev Defined here but are intended to be overriden depending on the OFT implementation.
* @dev Depending on OFT implementation the _amountLD could differ from the amountReceivedLD.
*/
function _debit(
address _from,
uint256 _amountLD,
uint256 _minAmountLD,
uint32 _dstEid
) internal virtual returns (uint256 amountSentLD, uint256 amountReceivedLD);
/**
* @dev Internal function to perform a credit operation.
* @param _to The address to credit.
* @param _amountLD The amount to credit in local decimals.
* @param _srcEid The source endpoint ID.
* @return amountReceivedLD The amount ACTUALLY received in local decimals.
*
* @dev Defined here but are intended to be overriden depending on the OFT implementation.
* @dev Depending on OFT implementation the _amountLD could differ from the amountReceivedLD.
*/
function _credit(
address _to,
uint256 _amountLD,
uint32 _srcEid
) internal virtual returns (uint256 amountReceivedLD);
}
// node_modules/@layerzerolabs/lz-evm-oapp-v2/contracts/oft/OFT.sol
/**
* @title OFT Contract
* @dev OFT is an ERC-20 token that extends the functionality of the OFTCore contract.
*/
abstract contract OFT is OFTCore, ERC20 {
/**
* @dev Constructor for the OFT contract.
* @param _name The name of the OFT.
* @param _symbol The symbol of the OFT.
* @param _lzEndpoint The LayerZero endpoint address.
* @param _delegate The delegate capable of making OApp configurations inside of the endpoint.
*/
constructor(
string memory _name,
string memory _symbol,
address _lzEndpoint,
address _delegate
) ERC20(_name, _symbol) OFTCore(decimals(), _lzEndpoint, _delegate) {}
/**
* @dev Retrieves the address of the underlying ERC20 implementation.
* @return The address of the OFT token.
*
* @dev In the case of OFT, address(this) and erc20 are the same contract.
*/
function token() public view returns (address) {
return address(this);
}
/**
* @notice Indicates whether the OFT contract requires approval of the 'token()' to send.
* @return requiresApproval Needs approval of the underlying token implementation.
*
* @dev In the case of OFT where the contract IS the token, approval is NOT required.
*/
function approvalRequired() external pure virtual returns (bool) {
return false;
}
/**
* @dev Burns tokens from the sender's specified balance.
* @param _from The address to debit the tokens from.
* @param _amountLD The amount of tokens to send in local decimals.
* @param _minAmountLD The minimum amount to send in local decimals.
* @param _dstEid The destination chain ID.
* @return amountSentLD The amount sent in local decimals.
* @return amountReceivedLD The amount received in local decimals on the remote.
*/
function _debit(
address _from,
uint256 _amountLD,
uint256 _minAmountLD,
uint32 _dstEid
) internal virtual override returns (uint256 amountSentLD, uint256 amountReceivedLD) {
(amountSentLD, amountReceivedLD) = _debitView(_amountLD, _minAmountLD, _dstEid);
// @dev In NON-default OFT, amountSentLD could be 100, with a 10% fee, the amountReceivedLD amount is 90,
// therefore amountSentLD CAN differ from amountReceivedLD.
// @dev Default OFT burns on src.
_burn(_from, amountSentLD);
}
/**
* @dev Credits tokens to the specified address.
* @param _to The address to credit the tokens to.
* @param _amountLD The amount of tokens to credit in local decimals.
* @dev _srcEid The source chain ID.
* @return amountReceivedLD The amount of tokens ACTUALLY received in local decimals.
*/
function _credit(
address _to,
uint256 _amountLD,
uint32 /*_srcEid*/
) internal virtual override returns (uint256 amountReceivedLD) {
if (_to == address(0x0)) _to = address(0xdead); // _mint(...) does not support address(0x0)
// @dev Default OFT mints on dst.
_mint(_to, _amountLD);
// @dev In the case of NON-default OFT, the _amountLD MIGHT not be == amountReceivedLD.
return _amountLD;
}
}
// contracts/RSETH_OFT.sol
/// @dev contract used for Destination chains
contract RSETH_OFT is OFT {
constructor(string memory _name, string memory _symbol, address _lzEndpoint, address _delegate)
OFT(_name, _symbol, _lzEndpoint, _delegate) Ownable(_delegate)
{}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
Contract ABI
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EnforcedOptionParam[]","name":"_enforcedOptions","type":"tuple[]"}],"name":"setEnforcedOptions","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_msgInspector","type":"address"}],"name":"setMsgInspector","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint32","name":"_eid","type":"uint32"},{"internalType":"bytes32","name":"_peer","type":"bytes32"}],"name":"setPeer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_preCrime","type":"address"}],"name":"setPreCrime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sharedDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"totalSupply","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transfer","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"value","type":"uint256"}],"name":"transferFrom","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","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)
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
-----Decoded View---------------
Arg [0] : _name (string): KelpDao Restaked ETH
Arg [1] : _symbol (string): rsETH
Arg [2] : _lzEndpoint (address): 0x6F475642a6e85809B1c36Fa62763669b1b48DD5B
Arg [3] : _delegate (address): 0xCF7bF9D3a485b9c4d4A38d65e4d68e081a585662
-----Encoded View---------------
8 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000080
Arg [1] : 00000000000000000000000000000000000000000000000000000000000000c0
Arg [2] : 0000000000000000000000006f475642a6e85809b1c36fa62763669b1b48dd5b
Arg [3] : 000000000000000000000000cf7bf9d3a485b9c4d4a38d65e4d68e081a585662
Arg [4] : 0000000000000000000000000000000000000000000000000000000000000014
Arg [5] : 4b656c7044616f2052657374616b656420455448000000000000000000000000
Arg [6] : 0000000000000000000000000000000000000000000000000000000000000005
Arg [7] : 7273455448000000000000000000000000000000000000000000000000000000
Deployed Bytecode Sourcemap
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Swarm Source
ipfs://2c4978196813eff223fe26699a8b6bdc42ce5793a71fafe2fab615af7b834601
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