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0x60806040 | 18614159 | 240 days ago | IN | Create: Empyreal | 0 ETH | 0.28942278 |
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Contract Name:
Empyreal
Compiler Version
v0.8.20+commit.a1b79de6
Optimization Enabled:
Yes with 1000 runs
Other Settings:
paris EvmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: MIT pragma solidity >=0.8.0; import "@openzeppelin/contracts-upgradeable/proxy/utils/Initializable.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/token/ERC20/extensions/ERC20BurnableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/utils/PausableUpgradeable.sol"; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "./OFTV2Initializable.sol"; contract Empyreal is Initializable, ERC20BurnableUpgradeable, PausableUpgradeable, OwnableUpgradeable, OFTV2Initializable { /// @custom:oz-upgrades-unsafe-allow constructor constructor() { _disableInitializers(); } function initialize(address _owner) public virtual initializer { __ERC20_init("Empyreal", "EMP"); __ERC20Burnable_init(); __Pausable_init(); __Ownable_init(_owner); // chain 101 lzEndpoint = ILayerZeroEndpoint( address(0x66A71Dcef29A0fFBDBE3c6a460a3B5BC225Cd675) ); // start with contract paused _pause(); } function pause() public onlyOwner { _pause(); } function unpause() public onlyOwner { _unpause(); } function _update( address from, address to, uint256 amount ) internal virtual override { if (tx.origin != owner()) { require(!paused(), "Empyreal: token transfer while paused"); } super._update(from, to, amount); } /* * LZ Methods */ function circulatingSupply() public view virtual override returns (uint) { return totalSupply(); } /************************************************************************ * internal functions ************************************************************************/ function _debitFrom( address _from, uint16, bytes32, uint _amount ) internal virtual override returns (uint) { address spender = _msgSender(); if (_from != spender) _spendAllowance(_from, spender, _amount); _burn(_from, _amount); return _amount; } function _creditTo( uint16, address _toAddress, uint _amount ) internal virtual override returns (uint) { _mint(_toAddress, _amount); return _amount; } function _transferFrom( address _from, address _to, uint _amount ) internal virtual override returns (uint) { address spender = _msgSender(); // if transfer from this contract, no need to check allowance if (_from != address(this) && _from != spender) _spendAllowance(_from, spender, _amount); _transfer(_from, _to, _amount); return _amount; } }
// SPDX-License-Identifier: Unlicense /* * @title Solidity Bytes Arrays Utils * @author Gonçalo Sá <[email protected]> * * @dev Bytes tightly packed arrays utility library for ethereum contracts written in Solidity. * The library lets you concatenate, slice and type cast bytes arrays both in memory and storage. */ pragma solidity >=0.8.0 <0.9.0; library BytesLib { function concat(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bytes memory) { bytes memory tempBytes; assembly { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // Store the length of the first bytes array at the beginning of // the memory for tempBytes. let length := mload(_preBytes) mstore(tempBytes, length) // Maintain a memory counter for the current write location in the // temp bytes array by adding the 32 bytes for the array length to // the starting location. let mc := add(tempBytes, 0x20) // Stop copying when the memory counter reaches the length of the // first bytes array. let end := add(mc, length) for { // Initialize a copy counter to the start of the _preBytes data, // 32 bytes into its memory. let cc := add(_preBytes, 0x20) } lt(mc, end) { // Increase both counters by 32 bytes each iteration. mc := add(mc, 0x20) cc := add(cc, 0x20) } { // Write the _preBytes data into the tempBytes memory 32 bytes // at a time. mstore(mc, mload(cc)) } // Add the length of _postBytes to the current length of tempBytes // and store it as the new length in the first 32 bytes of the // tempBytes memory. length := mload(_postBytes) mstore(tempBytes, add(length, mload(tempBytes))) // Move the memory counter back from a multiple of 0x20 to the // actual end of the _preBytes data. mc := end // Stop copying when the memory counter reaches the new combined // length of the arrays. end := add(mc, length) for { let cc := add(_postBytes, 0x20) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } // Update the free-memory pointer by padding our last write location // to 32 bytes: add 31 bytes to the end of tempBytes to move to the // next 32 byte block, then round down to the nearest multiple of // 32. If the sum of the length of the two arrays is zero then add // one before rounding down to leave a blank 32 bytes (the length block with 0). mstore( 0x40, and( add(add(end, iszero(add(length, mload(_preBytes)))), 31), not(31) // Round down to the nearest 32 bytes. ) ) } return tempBytes; } function concatStorage(bytes storage _preBytes, bytes memory _postBytes) internal { assembly { // Read the first 32 bytes of _preBytes storage, which is the length // of the array. (We don't need to use the offset into the slot // because arrays use the entire slot.) let fslot := sload(_preBytes.slot) // Arrays of 31 bytes or less have an even value in their slot, // while longer arrays have an odd value. The actual length is // the slot divided by two for odd values, and the lowest order // byte divided by two for even values. // If the slot is even, bitwise and the slot with 255 and divide by // two to get the length. If the slot is odd, bitwise and the slot // with -1 and divide by two. let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) let newlength := add(slength, mlength) // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage switch add(lt(slength, 32), lt(newlength, 32)) case 2 { // Since the new array still fits in the slot, we just need to // update the contents of the slot. // uint256(bytes_storage) = uint256(bytes_storage) + uint256(bytes_memory) + new_length sstore( _preBytes.slot, // all the modifications to the slot are inside this // next block add( // we can just add to the slot contents because the // bytes we want to change are the LSBs fslot, add( mul( div( // load the bytes from memory mload(add(_postBytes, 0x20)), // zero all bytes to the right exp(0x100, sub(32, mlength)) ), // and now shift left the number of bytes to // leave space for the length in the slot exp(0x100, sub(32, newlength)) ), // increase length by the double of the memory // bytes length mul(mlength, 2) ) ) ) } case 1 { // The stored value fits in the slot, but the combined value // will exceed it. // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // The contents of the _postBytes array start 32 bytes into // the structure. Our first read should obtain the `submod` // bytes that can fit into the unused space in the last word // of the stored array. To get this, we read 32 bytes starting // from `submod`, so the data we read overlaps with the array // contents by `submod` bytes. Masking the lowest-order // `submod` bytes allows us to add that value directly to the // stored value. let submod := sub(32, slength) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(and(fslot, 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff00), and(mload(mc), mask))) for { mc := add(mc, 0x20) sc := add(sc, 1) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } default { // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) // Start copying to the last used word of the stored array. let sc := add(keccak256(0x0, 0x20), div(slength, 32)) // save new length sstore(_preBytes.slot, add(mul(newlength, 2), 1)) // Copy over the first `submod` bytes of the new data as in // case 1 above. let slengthmod := mod(slength, 32) let mlengthmod := mod(mlength, 32) let submod := sub(32, slengthmod) let mc := add(_postBytes, submod) let end := add(_postBytes, mlength) let mask := sub(exp(0x100, submod), 1) sstore(sc, add(sload(sc), and(mload(mc), mask))) for { sc := add(sc, 1) mc := add(mc, 0x20) } lt(mc, end) { sc := add(sc, 1) mc := add(mc, 0x20) } { sstore(sc, mload(mc)) } mask := exp(0x100, sub(mc, end)) sstore(sc, mul(div(mload(mc), mask), mask)) } } } function slice( bytes memory _bytes, uint _start, uint _length ) internal pure returns (bytes memory) { require(_length + 31 >= _length, "slice_overflow"); require(_bytes.length >= _start + _length, "slice_outOfBounds"); bytes memory tempBytes; assembly { switch iszero(_length) case 0 { // Get a location of some free memory and store it in tempBytes as // Solidity does for memory variables. tempBytes := mload(0x40) // The first word of the slice result is potentially a partial // word read from the original array. To read it, we calculate // the length of that partial word and start copying that many // bytes into the array. The first word we copy will start with // data we don't care about, but the last `lengthmod` bytes will // land at the beginning of the contents of the new array. When // we're done copying, we overwrite the full first word with // the actual length of the slice. let lengthmod := and(_length, 31) // The multiplication in the next line is necessary // because when slicing multiples of 32 bytes (lengthmod == 0) // the following copy loop was copying the origin's length // and then ending prematurely not copying everything it should. let mc := add(add(tempBytes, lengthmod), mul(0x20, iszero(lengthmod))) let end := add(mc, _length) for { // The multiplication in the next line has the same exact purpose // as the one above. let cc := add(add(add(_bytes, lengthmod), mul(0x20, iszero(lengthmod))), _start) } lt(mc, end) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { mstore(mc, mload(cc)) } mstore(tempBytes, _length) //update free-memory pointer //allocating the array padded to 32 bytes like the compiler does now mstore(0x40, and(add(mc, 31), not(31))) } //if we want a zero-length slice let's just return a zero-length array default { tempBytes := mload(0x40) //zero out the 32 bytes slice we are about to return //we need to do it because Solidity does not garbage collect mstore(tempBytes, 0) mstore(0x40, add(tempBytes, 0x20)) } } return tempBytes; } function toAddress(bytes memory _bytes, uint _start) internal pure returns (address) { require(_bytes.length >= _start + 20, "toAddress_outOfBounds"); address tempAddress; assembly { tempAddress := div(mload(add(add(_bytes, 0x20), _start)), 0x1000000000000000000000000) } return tempAddress; } function toUint8(bytes memory _bytes, uint _start) internal pure returns (uint8) { require(_bytes.length >= _start + 1, "toUint8_outOfBounds"); uint8 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x1), _start)) } return tempUint; } function toUint16(bytes memory _bytes, uint _start) internal pure returns (uint16) { require(_bytes.length >= _start + 2, "toUint16_outOfBounds"); uint16 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x2), _start)) } return tempUint; } function toUint32(bytes memory _bytes, uint _start) internal pure returns (uint32) { require(_bytes.length >= _start + 4, "toUint32_outOfBounds"); uint32 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x4), _start)) } return tempUint; } function toUint64(bytes memory _bytes, uint _start) internal pure returns (uint64) { require(_bytes.length >= _start + 8, "toUint64_outOfBounds"); uint64 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x8), _start)) } return tempUint; } function toUint96(bytes memory _bytes, uint _start) internal pure returns (uint96) { require(_bytes.length >= _start + 12, "toUint96_outOfBounds"); uint96 tempUint; assembly { tempUint := mload(add(add(_bytes, 0xc), _start)) } return tempUint; } function toUint128(bytes memory _bytes, uint _start) internal pure returns (uint128) { require(_bytes.length >= _start + 16, "toUint128_outOfBounds"); uint128 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x10), _start)) } return tempUint; } function toUint256(bytes memory _bytes, uint _start) internal pure returns (uint) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint _start) internal pure returns (bytes32) { require(_bytes.length >= _start + 32, "toBytes32_outOfBounds"); bytes32 tempBytes32; assembly { tempBytes32 := mload(add(add(_bytes, 0x20), _start)) } return tempBytes32; } function equal(bytes memory _preBytes, bytes memory _postBytes) internal pure returns (bool) { bool success = true; assembly { let length := mload(_preBytes) // if lengths don't match the arrays are not equal switch eq(length, mload(_postBytes)) case 1 { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 let mc := add(_preBytes, 0x20) let end := add(mc, length) for { let cc := add(_postBytes, 0x20) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) } eq(add(lt(mc, end), cb), 2) { mc := add(mc, 0x20) cc := add(cc, 0x20) } { // if any of these checks fails then arrays are not equal if iszero(eq(mload(mc), mload(cc))) { // unsuccess: success := 0 cb := 0 } } } default { // unsuccess: success := 0 } } return success; } function equalStorage(bytes storage _preBytes, bytes memory _postBytes) internal view returns (bool) { bool success = true; assembly { // we know _preBytes_offset is 0 let fslot := sload(_preBytes.slot) // Decode the length of the stored array like in concatStorage(). let slength := div(and(fslot, sub(mul(0x100, iszero(and(fslot, 1))), 1)), 2) let mlength := mload(_postBytes) // if lengths don't match the arrays are not equal switch eq(slength, mlength) case 1 { // slength can contain both the length and contents of the array // if length < 32 bytes so let's prepare for that // v. http://solidity.readthedocs.io/en/latest/miscellaneous.html#layout-of-state-variables-in-storage if iszero(iszero(slength)) { switch lt(slength, 32) case 1 { // blank the last byte which is the length fslot := mul(div(fslot, 0x100), 0x100) if iszero(eq(fslot, mload(add(_postBytes, 0x20)))) { // unsuccess: success := 0 } } default { // cb is a circuit breaker in the for loop since there's // no said feature for inline assembly loops // cb = 1 - don't breaker // cb = 0 - break let cb := 1 // get the keccak hash to get the contents of the array mstore(0x0, _preBytes.slot) let sc := keccak256(0x0, 0x20) let mc := add(_postBytes, 0x20) let end := add(mc, mlength) // the next line is the loop condition: // while(uint256(mc < end) + cb == 2) for { } eq(add(lt(mc, end), cb), 2) { sc := add(sc, 1) mc := add(mc, 0x20) } { if iszero(eq(sload(sc), mload(mc))) { // unsuccess: success := 0 cb := 0 } } } } } default { // unsuccess: success := 0 } } return success; } }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import "./ILayerZeroUserApplicationConfig.sol"; interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig { // @notice send a LayerZero message to the specified address at a LayerZero endpoint. // @param _dstChainId - the destination chain identifier // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains // @param _payload - a custom bytes payload to send to the destination contract // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination function send( uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams ) external payable; // @notice used by the messaging library to publish verified payload // @param _srcChainId - the source chain identifier // @param _srcAddress - the source contract (as bytes) at the source chain // @param _dstAddress - the address on destination chain // @param _nonce - the unbound message ordering nonce // @param _gasLimit - the gas limit for external contract execution // @param _payload - verified payload to send to the destination contract function receivePayload( uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload ) external; // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64); // @notice get the outboundNonce from this source chain which, consequently, is always an EVM // @param _srcAddress - the source chain contract address function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64); // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery // @param _dstChainId - the destination chain identifier // @param _userApplication - the user app address on this EVM chain // @param _payload - the custom message to send over LayerZero // @param _payInZRO - if false, user app pays the protocol fee in native token // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain function estimateFees( uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam ) external view returns (uint nativeFee, uint zroFee); // @notice get this Endpoint's immutable source identifier function getChainId() external view returns (uint16); // @notice the interface to retry failed message on this Endpoint destination // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address // @param _payload - the payload to be retried function retryPayload( uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload ) external; // @notice query if any STORED payload (message blocking) at the endpoint. // @param _srcChainId - the source chain identifier // @param _srcAddress - the source chain contract address function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool); // @notice query if the _libraryAddress is valid for sending msgs. // @param _userApplication - the user app address on this EVM chain function getSendLibraryAddress(address _userApplication) external view returns (address); // @notice query if the _libraryAddress is valid for receiving msgs. // @param _userApplication - the user app address on this EVM chain function getReceiveLibraryAddress(address _userApplication) external view returns (address); // @notice query if the non-reentrancy guard for send() is on // @return true if the guard is on. false otherwise function isSendingPayload() external view returns (bool); // @notice query if the non-reentrancy guard for receive() is on // @return true if the guard is on. false otherwise function isReceivingPayload() external view returns (bool); // @notice get the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _userApplication - the contract address of the user application // @param _configType - type of configuration. every messaging library has its own convention. function getConfig( uint16 _version, uint16 _chainId, address _userApplication, uint _configType ) external view returns (bytes memory); // @notice get the send() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getSendVersion(address _userApplication) external view returns (uint16); // @notice get the lzReceive() LayerZero messaging library version // @param _userApplication - the contract address of the user application function getReceiveVersion(address _userApplication) external view returns (uint16); }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface ILayerZeroReceiver { // @notice LayerZero endpoint will invoke this function to deliver the message on the destination // @param _srcChainId - the source endpoint identifier // @param _srcAddress - the source sending contract address from the source chain // @param _nonce - the ordered message nonce // @param _payload - the signed payload is the UA bytes has encoded to be sent function lzReceive( uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload ) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; interface ILayerZeroUserApplicationConfig { // @notice set the configuration of the LayerZero messaging library of the specified version // @param _version - messaging library version // @param _chainId - the chainId for the pending config change // @param _configType - type of configuration. every messaging library has its own convention. // @param _config - configuration in the bytes. can encode arbitrary content. function setConfig( uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config ) external; // @notice set the send() LayerZero messaging library version to _version // @param _version - new messaging library version function setSendVersion(uint16 _version) external; // @notice set the lzReceive() LayerZero messaging library version to _version // @param _version - new messaging library version function setReceiveVersion(uint16 _version) external; // @notice Only when the UA needs to resume the message flow in blocking mode and clear the stored payload // @param _srcChainId - the chainId of the source chain // @param _srcAddress - the contract address of the source contract at the source chain function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external; }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (access/Ownable.sol) pragma solidity ^0.8.20; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * 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 OwnableUpgradeable is Initializable, ContextUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Ownable struct OwnableStorage { address _owner; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Ownable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant OwnableStorageLocation = 0x9016d09d72d40fdae2fd8ceac6b6234c7706214fd39c1cd1e609a0528c199300; function _getOwnableStorage() private pure returns (OwnableStorage storage $) { assembly { $.slot := OwnableStorageLocation } } /** * @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. */ function __Ownable_init(address initialOwner) internal onlyInitializing { __Ownable_init_unchained(initialOwner); } function __Ownable_init_unchained(address initialOwner) internal onlyInitializing { 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) { OwnableStorage storage $ = _getOwnableStorage(); 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 { OwnableStorage storage $ = _getOwnableStorage(); address oldOwner = $._owner; $._owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (proxy/utils/Initializable.sol) pragma solidity ^0.8.20; /** * @dev This is a base contract to aid in writing upgradeable contracts, or any kind of contract that will be deployed * behind a proxy. Since proxied contracts do not make use of a constructor, it's common to move constructor logic to an * external initializer function, usually called `initialize`. It then becomes necessary to protect this initializer * function so it can only be called once. The {initializer} modifier provided by this contract will have this effect. * * The initialization functions use a version number. Once a version number is used, it is consumed and cannot be * reused. This mechanism prevents re-execution of each "step" but allows the creation of new initialization steps in * case an upgrade adds a module that needs to be initialized. * * For example: * * [.hljs-theme-light.nopadding] * ```solidity * contract MyToken is ERC20Upgradeable { * function initialize() initializer public { * __ERC20_init("MyToken", "MTK"); * } * } * * contract MyTokenV2 is MyToken, ERC20PermitUpgradeable { * function initializeV2() reinitializer(2) public { * __ERC20Permit_init("MyToken"); * } * } * ``` * * TIP: To avoid leaving the proxy in an uninitialized state, the initializer function should be called as early as * possible by providing the encoded function call as the `_data` argument to {ERC1967Proxy-constructor}. * * CAUTION: When used with inheritance, manual care must be taken to not invoke a parent initializer twice, or to ensure * that all initializers are idempotent. This is not verified automatically as constructors are by Solidity. * * [CAUTION] * ==== * Avoid leaving a contract uninitialized. * * An uninitialized contract can be taken over by an attacker. This applies to both a proxy and its implementation * contract, which may impact the proxy. To prevent the implementation contract from being used, you should invoke * the {_disableInitializers} function in the constructor to automatically lock it when it is deployed: * * [.hljs-theme-light.nopadding] * ``` * /// @custom:oz-upgrades-unsafe-allow constructor * constructor() { * _disableInitializers(); * } * ``` * ==== */ abstract contract Initializable { /** * @dev Storage of the initializable contract. * * It's implemented on a custom ERC-7201 namespace to reduce the risk of storage collisions * when using with upgradeable contracts. * * @custom:storage-location erc7201:openzeppelin.storage.Initializable */ struct InitializableStorage { /** * @dev Indicates that the contract has been initialized. */ uint64 _initialized; /** * @dev Indicates that the contract is in the process of being initialized. */ bool _initializing; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Initializable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant INITIALIZABLE_STORAGE = 0xf0c57e16840df040f15088dc2f81fe391c3923bec73e23a9662efc9c229c6a00; /** * @dev The contract is already initialized. */ error InvalidInitialization(); /** * @dev The contract is not initializing. */ error NotInitializing(); /** * @dev Triggered when the contract has been initialized or reinitialized. */ event Initialized(uint64 version); /** * @dev A modifier that defines a protected initializer function that can be invoked at most once. In its scope, * `onlyInitializing` functions can be used to initialize parent contracts. * * Similar to `reinitializer(1)`, except that in the context of a constructor an `initializer` may be invoked any * number of times. This behavior in the constructor can be useful during testing and is not expected to be used in * production. * * Emits an {Initialized} event. */ modifier initializer() { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); // Cache values to avoid duplicated sloads bool isTopLevelCall = !$._initializing; uint64 initialized = $._initialized; // Allowed calls: // - initialSetup: the contract is not in the initializing state and no previous version was // initialized // - construction: the contract is initialized at version 1 (no reininitialization) and the // current contract is just being deployed bool initialSetup = initialized == 0 && isTopLevelCall; bool construction = initialized == 1 && address(this).code.length == 0; if (!initialSetup && !construction) { revert InvalidInitialization(); } $._initialized = 1; if (isTopLevelCall) { $._initializing = true; } _; if (isTopLevelCall) { $._initializing = false; emit Initialized(1); } } /** * @dev A modifier that defines a protected reinitializer function that can be invoked at most once, and only if the * contract hasn't been initialized to a greater version before. In its scope, `onlyInitializing` functions can be * used to initialize parent contracts. * * A reinitializer may be used after the original initialization step. This is essential to configure modules that * are added through upgrades and that require initialization. * * When `version` is 1, this modifier is similar to `initializer`, except that functions marked with `reinitializer` * cannot be nested. If one is invoked in the context of another, execution will revert. * * Note that versions can jump in increments greater than 1; this implies that if multiple reinitializers coexist in * a contract, executing them in the right order is up to the developer or operator. * * WARNING: Setting the version to 2**64 - 1 will prevent any future reinitialization. * * Emits an {Initialized} event. */ modifier reinitializer(uint64 version) { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing || $._initialized >= version) { revert InvalidInitialization(); } $._initialized = version; $._initializing = true; _; $._initializing = false; emit Initialized(version); } /** * @dev Modifier to protect an initialization function so that it can only be invoked by functions with the * {initializer} and {reinitializer} modifiers, directly or indirectly. */ modifier onlyInitializing() { _checkInitializing(); _; } /** * @dev Reverts if the contract is not in an initializing state. See {onlyInitializing}. */ function _checkInitializing() internal view virtual { if (!_isInitializing()) { revert NotInitializing(); } } /** * @dev Locks the contract, preventing any future reinitialization. This cannot be part of an initializer call. * Calling this in the constructor of a contract will prevent that contract from being initialized or reinitialized * to any version. It is recommended to use this to lock implementation contracts that are designed to be called * through proxies. * * Emits an {Initialized} event the first time it is successfully executed. */ function _disableInitializers() internal virtual { // solhint-disable-next-line var-name-mixedcase InitializableStorage storage $ = _getInitializableStorage(); if ($._initializing) { revert InvalidInitialization(); } if ($._initialized != type(uint64).max) { $._initialized = type(uint64).max; emit Initialized(type(uint64).max); } } /** * @dev Returns the highest version that has been initialized. See {reinitializer}. */ function _getInitializedVersion() internal view returns (uint64) { return _getInitializableStorage()._initialized; } /** * @dev Returns `true` if the contract is currently initializing. See {onlyInitializing}. */ function _isInitializing() internal view returns (bool) { return _getInitializableStorage()._initializing; } /** * @dev Returns a pointer to the storage namespace. */ // solhint-disable-next-line var-name-mixedcase function _getInitializableStorage() private pure returns (InitializableStorage storage $) { assembly { $.slot := INITIALIZABLE_STORAGE } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/ERC20.sol) pragma solidity ^0.8.20; import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol"; import {IERC20Metadata} from "@openzeppelin/contracts/token/ERC20/extensions/IERC20Metadata.sol"; import {ContextUpgradeable} from "../../utils/ContextUpgradeable.sol"; import {IERC20Errors} from "@openzeppelin/contracts/interfaces/draft-IERC6093.sol"; import {Initializable} from "../../proxy/utils/Initializable.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 ERC20 * applications. * * Additionally, an {Approval} event is emitted on calls to {transferFrom}. * This allows applications to reconstruct the allowance for all accounts just * by listening to said events. Other implementations of the EIP may not emit * these events, as it isn't required by the specification. */ abstract contract ERC20Upgradeable is Initializable, ContextUpgradeable, IERC20, IERC20Metadata, IERC20Errors { /// @custom:storage-location erc7201:openzeppelin.storage.ERC20 struct ERC20Storage { mapping(address account => uint256) _balances; mapping(address account => mapping(address spender => uint256)) _allowances; uint256 _totalSupply; string _name; string _symbol; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.ERC20")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant ERC20StorageLocation = 0x52c63247e1f47db19d5ce0460030c497f067ca4cebf71ba98eeadabe20bace00; function _getERC20Storage() private pure returns (ERC20Storage storage $) { assembly { $.slot := ERC20StorageLocation } } /** * @dev Sets the values for {name} and {symbol}. * * All two of these values are immutable: they can only be set once during * construction. */ function __ERC20_init(string memory name_, string memory symbol_) internal onlyInitializing { __ERC20_init_unchained(name_, symbol_); } function __ERC20_init_unchained(string memory name_, string memory symbol_) internal onlyInitializing { ERC20Storage storage $ = _getERC20Storage(); $._name = name_; $._symbol = symbol_; } /** * @dev Returns the name of the token. */ function name() public view virtual returns (string memory) { ERC20Storage storage $ = _getERC20Storage(); return $._name; } /** * @dev Returns the symbol of the token, usually a shorter version of the * name. */ function symbol() public view virtual returns (string memory) { ERC20Storage storage $ = _getERC20Storage(); 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) { ERC20Storage storage $ = _getERC20Storage(); return $._totalSupply; } /** * @dev See {IERC20-balanceOf}. */ function balanceOf(address account) public view virtual returns (uint256) { ERC20Storage storage $ = _getERC20Storage(); 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) { ERC20Storage storage $ = _getERC20Storage(); 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}. * * Emits an {Approval} event indicating the updated allowance. This is not * required by the EIP. See the note at the beginning of {ERC20}. * * 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 { ERC20Storage storage $ = _getERC20Storage(); 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: * ``` * 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 { ERC20Storage storage $ = _getERC20Storage(); 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); } } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/ERC20Burnable.sol) pragma solidity ^0.8.20; import {ERC20Upgradeable} from "../ERC20Upgradeable.sol"; import {ContextUpgradeable} from "../../../utils/ContextUpgradeable.sol"; import {Initializable} from "../../../proxy/utils/Initializable.sol"; /** * @dev Extension of {ERC20} that allows token holders to destroy both their own * tokens and those that they have an allowance for, in a way that can be * recognized off-chain (via event analysis). */ abstract contract ERC20BurnableUpgradeable is Initializable, ContextUpgradeable, ERC20Upgradeable { function __ERC20Burnable_init() internal onlyInitializing { } function __ERC20Burnable_init_unchained() internal onlyInitializing { } /** * @dev Destroys a `value` amount of tokens from the caller. * * See {ERC20-_burn}. */ function burn(uint256 value) public virtual { _burn(_msgSender(), value); } /** * @dev Destroys a `value` amount of tokens from `account`, deducting from * the caller's allowance. * * See {ERC20-_burn} and {ERC20-allowance}. * * Requirements: * * - the caller must have allowance for ``accounts``'s tokens of at least * `value`. */ function burnFrom(address account, uint256 value) public virtual { _spendAllowance(account, _msgSender(), value); _burn(account, value); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Context.sol) pragma solidity ^0.8.20; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract ContextUpgradeable is Initializable { function __Context_init() internal onlyInitializing { } function __Context_init_unchained() internal onlyInitializing { } function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/ERC165.sol) pragma solidity ^0.8.20; import {IERC165} from "@openzeppelin/contracts/utils/introspection/IERC165.sol"; import {Initializable} from "../../proxy/utils/Initializable.sol"; /** * @dev Implementation of the {IERC165} interface. * * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check * for the additional interface id that will be supported. For example: * * ```solidity * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { * return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId); * } * ``` */ abstract contract ERC165Upgradeable is Initializable, IERC165 { function __ERC165_init() internal onlyInitializing { } function __ERC165_init_unchained() internal onlyInitializing { } /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/Pausable.sol) pragma solidity ^0.8.20; import {ContextUpgradeable} from "../utils/ContextUpgradeable.sol"; import {Initializable} from "../proxy/utils/Initializable.sol"; /** * @dev Contract module which allows children to implement an emergency stop * mechanism that can be triggered by an authorized account. * * This module is used through inheritance. It will make available the * modifiers `whenNotPaused` and `whenPaused`, which can be applied to * the functions of your contract. Note that they will not be pausable by * simply including this module, only once the modifiers are put in place. */ abstract contract PausableUpgradeable is Initializable, ContextUpgradeable { /// @custom:storage-location erc7201:openzeppelin.storage.Pausable struct PausableStorage { bool _paused; } // keccak256(abi.encode(uint256(keccak256("openzeppelin.storage.Pausable")) - 1)) & ~bytes32(uint256(0xff)) bytes32 private constant PausableStorageLocation = 0xcd5ed15c6e187e77e9aee88184c21f4f2182ab5827cb3b7e07fbedcd63f03300; function _getPausableStorage() private pure returns (PausableStorage storage $) { assembly { $.slot := PausableStorageLocation } } /** * @dev Emitted when the pause is triggered by `account`. */ event Paused(address account); /** * @dev Emitted when the pause is lifted by `account`. */ event Unpaused(address account); /** * @dev The operation failed because the contract is paused. */ error EnforcedPause(); /** * @dev The operation failed because the contract is not paused. */ error ExpectedPause(); /** * @dev Initializes the contract in unpaused state. */ function __Pausable_init() internal onlyInitializing { __Pausable_init_unchained(); } function __Pausable_init_unchained() internal onlyInitializing { PausableStorage storage $ = _getPausableStorage(); $._paused = false; } /** * @dev Modifier to make a function callable only when the contract is not paused. * * Requirements: * * - The contract must not be paused. */ modifier whenNotPaused() { _requireNotPaused(); _; } /** * @dev Modifier to make a function callable only when the contract is paused. * * Requirements: * * - The contract must be paused. */ modifier whenPaused() { _requirePaused(); _; } /** * @dev Returns true if the contract is paused, and false otherwise. */ function paused() public view virtual returns (bool) { PausableStorage storage $ = _getPausableStorage(); return $._paused; } /** * @dev Throws if the contract is paused. */ function _requireNotPaused() internal view virtual { if (paused()) { revert EnforcedPause(); } } /** * @dev Throws if the contract is not paused. */ function _requirePaused() internal view virtual { if (!paused()) { revert ExpectedPause(); } } /** * @dev Triggers stopped state. * * Requirements: * * - The contract must not be paused. */ function _pause() internal virtual whenNotPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = true; emit Paused(_msgSender()); } /** * @dev Returns to normal state. * * Requirements: * * - The contract must be paused. */ function _unpause() internal virtual whenPaused { PausableStorage storage $ = _getPausableStorage(); $._paused = false; emit Unpaused(_msgSender()); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (interfaces/draft-IERC6093.sol) pragma solidity ^0.8.20; /** * @dev Standard ERC20 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC20 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 ERC721 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC721 tokens. */ interface IERC721Errors { /** * @dev Indicates that an address can't be an owner. For example, `address(0)` is a forbidden owner in EIP-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 ERC1155 Errors * Interface of the https://eips.ethereum.org/EIPS/eip-6093[ERC-6093] custom errors for ERC1155 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Metadata.sol) pragma solidity ^0.8.20; import {IERC20} from "../IERC20.sol"; /** * @dev Interface for the optional metadata functions from the ERC20 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC20 standard as defined in the EIP. */ interface IERC20 { /** * @dev Emitted when `value` tokens are moved from one account (`from`) to * another (`to`). * * Note that `value` may be zero. */ event Transfer(address indexed from, address indexed to, uint256 value); /** * @dev Emitted when the allowance of a `spender` for an `owner` is set by * a call to {approve}. `value` is the new allowance. */ event Approval(address indexed owner, address indexed spender, uint256 value); /** * @dev Returns the 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); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v5.0.0) (utils/introspection/IERC165.sol) pragma solidity ^0.8.20; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./OFTCoreV2Initializable.sol"; import "./OFT/interfaces/IOFTV2.sol"; import "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; abstract contract BaseOFTV2Initializable is OFTCoreV2Initializable, ERC165Upgradeable, IOFTV2 { /************************************************************************ * public functions ************************************************************************/ function sendFrom( address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, LzCallParams calldata _callParams ) public payable virtual override { _send( _from, _dstChainId, _toAddress, _amount, _callParams.refundAddress, _callParams.zroPaymentAddress, _callParams.adapterParams ); } function sendAndCall( address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, LzCallParams calldata _callParams ) public payable virtual override { _sendAndCall( _from, _dstChainId, _toAddress, _amount, _payload, _dstGasForCall, _callParams.refundAddress, _callParams.zroPaymentAddress, _callParams.adapterParams ); } /************************************************************************ * public view functions ************************************************************************/ function supportsInterface( bytes4 interfaceId ) public view virtual override(ERC165Upgradeable, IERC165) returns (bool) { return interfaceId == type(IOFTV2).interfaceId || super.supportsInterface(interfaceId); } function estimateSendFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams ) public view virtual override returns (uint nativeFee, uint zroFee) { return _estimateSendFee( _dstChainId, _toAddress, _amount, _useZro, _adapterParams ); } function estimateSendAndCallFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, bool _useZro, bytes calldata _adapterParams ) public view virtual override returns (uint nativeFee, uint zroFee) { return _estimateSendAndCallFee( _dstChainId, _toAddress, _amount, _payload, _dstGasForCall, _useZro, _adapterParams ); } function circulatingSupply() public view virtual override returns (uint); function token() public view virtual override returns (address); }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import {IERC165} from "@openzeppelin/contracts-upgradeable/utils/introspection/ERC165Upgradeable.sol"; /** * @dev Interface of the IOFT core standard */ interface ICommonOFT is IERC165 { struct LzCallParams { address payable refundAddress; address zroPaymentAddress; bytes adapterParams; } /** * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`) * _dstChainId - L0 defined chain id to send tokens too * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain * _amount - amount of the tokens to transfer * _useZro - indicates to use zro to pay L0 fees * _adapterParam - flexible bytes array to indicate messaging adapter services in L0 */ function estimateSendFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams ) external view returns (uint nativeFee, uint zroFee); function estimateSendAndCallFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, bool _useZro, bytes calldata _adapterParams ) external view returns (uint nativeFee, uint zroFee); /** * @dev returns the circulating amount of tokens on current chain */ function circulatingSupply() external view returns (uint); /** * @dev returns the address of the ERC20 token */ function token() external view returns (address); }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity >=0.5.0; interface IOFTReceiverV2 { /** * @dev Called by the OFT contract when tokens are received from source chain. * @param _srcChainId The chain id of the source chain. * @param _srcAddress The address of the OFT token contract on the source chain. * @param _nonce The nonce of the transaction on the source chain. * @param _from The address of the account who calls the sendAndCall() on the source chain. * @param _amount The amount of tokens to transfer. * @param _payload Additional data with no specified format. */ function onOFTReceived(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes32 _from, uint _amount, bytes calldata _payload) external; }
// SPDX-License-Identifier: MIT pragma solidity >=0.5.0; import "./ICommonOFT.sol"; /** * @dev Interface of the IOFT core standard */ interface IOFTV2 is ICommonOFT { /** * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from` * `_from` the owner of token * `_dstChainId` the destination chain identifier * `_toAddress` can be any size depending on the `dstChainId`. * `_amount` the quantity of tokens in wei * `_refundAddress` the address LayerZero refunds if too much message fee is sent * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token) * `_adapterParams` is a flexible bytes array to indicate messaging adapter services */ function sendFrom(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, LzCallParams calldata _callParams) external payable; function sendAndCall(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, LzCallParams calldata _callParams) external payable; }
// SPDX-License-Identifier: MIT OR Apache-2.0 pragma solidity >=0.7.6; library ExcessivelySafeCall { uint constant LOW_28_MASK = 0x00000000ffffffffffffffffffffffffffffffffffffffffffffffffffffffff; /// @notice Use when you _really_ really _really_ don't trust the called /// contract. This prevents the called contract from causing reversion of /// the caller in as many ways as we can. /// @dev The main difference between this and a solidity low-level call is /// that we limit the number of bytes that the callee can cause to be /// copied to caller memory. This prevents stupid things like malicious /// contracts returning 10,000,000 bytes causing a local OOG when copying /// to memory. /// @param _target The address to call /// @param _gas The amount of gas to forward to the remote contract /// @param _maxCopy The maximum number of bytes of returndata to copy /// to memory. /// @param _calldata The data to send to the remote contract /// @return success and returndata, as `.call()`. Returndata is capped to /// `_maxCopy` bytes. function excessivelySafeCall( address _target, uint _gas, uint16 _maxCopy, bytes memory _calldata ) internal returns (bool, bytes memory) { // set up for assembly call uint _toCopy; bool _success; bytes memory _returnData = new bytes(_maxCopy); // dispatch message to recipient // by assembly calling "handle" function // we call via assembly to avoid memcopying a very large returndata // returned by a malicious contract assembly { _success := call( _gas, // gas _target, // recipient 0, // ether value add(_calldata, 0x20), // inloc mload(_calldata), // inlen 0, // outloc 0 // outlen ) // limit our copy to 256 bytes _toCopy := returndatasize() if gt(_toCopy, _maxCopy) { _toCopy := _maxCopy } // Store the length of the copied bytes mstore(_returnData, _toCopy) // copy the bytes from returndata[0:_toCopy] returndatacopy(add(_returnData, 0x20), 0, _toCopy) } return (_success, _returnData); } /// @notice Use when you _really_ really _really_ don't trust the called /// contract. This prevents the called contract from causing reversion of /// the caller in as many ways as we can. /// @dev The main difference between this and a solidity low-level call is /// that we limit the number of bytes that the callee can cause to be /// copied to caller memory. This prevents stupid things like malicious /// contracts returning 10,000,000 bytes causing a local OOG when copying /// to memory. /// @param _target The address to call /// @param _gas The amount of gas to forward to the remote contract /// @param _maxCopy The maximum number of bytes of returndata to copy /// to memory. /// @param _calldata The data to send to the remote contract /// @return success and returndata, as `.call()`. Returndata is capped to /// `_maxCopy` bytes. function excessivelySafeStaticCall( address _target, uint _gas, uint16 _maxCopy, bytes memory _calldata ) internal view returns (bool, bytes memory) { // set up for assembly call uint _toCopy; bool _success; bytes memory _returnData = new bytes(_maxCopy); // dispatch message to recipient // by assembly calling "handle" function // we call via assembly to avoid memcopying a very large returndata // returned by a malicious contract assembly { _success := staticcall( _gas, // gas _target, // recipient add(_calldata, 0x20), // inloc mload(_calldata), // inlen 0, // outloc 0 // outlen ) // limit our copy to 256 bytes _toCopy := returndatasize() if gt(_toCopy, _maxCopy) { _toCopy := _maxCopy } // Store the length of the copied bytes mstore(_returnData, _toCopy) // copy the bytes from returndata[0:_toCopy] returndatacopy(add(_returnData, 0x20), 0, _toCopy) } return (_success, _returnData); } /** * @notice Swaps function selectors in encoded contract calls * @dev Allows reuse of encoded calldata for functions with identical * argument types but different names. It simply swaps out the first 4 bytes * for the new selector. This function modifies memory in place, and should * only be used with caution. * @param _newSelector The new 4-byte selector * @param _buf The encoded contract args */ function swapSelector(bytes4 _newSelector, bytes memory _buf) internal pure { require(_buf.length >= 4); uint _mask = LOW_28_MASK; assembly { // load the first word of let _word := mload(add(_buf, 0x20)) // mask out the top 4 bytes // /x _word := and(_word, _mask) _word := or(_newSelector, _word) mstore(add(_buf, 0x20), _word) } } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts-upgradeable/access/OwnableUpgradeable.sol"; import "@layerzerolabs/solidity-examples/contracts/lzApp/interfaces/ILayerZeroReceiver.sol"; import "@layerzerolabs/solidity-examples/contracts/lzApp/interfaces/ILayerZeroUserApplicationConfig.sol"; import "@layerzerolabs/solidity-examples/contracts/lzApp/interfaces/ILayerZeroEndpoint.sol"; import "@layerzerolabs/solidity-examples/contracts/libraries/BytesLib.sol"; /* * a generic LzReceiver implementation */ abstract contract LzApp is OwnableUpgradeable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig { using BytesLib for bytes; // ua can not send payload larger than this by default, but it can be changed by the ua owner uint public constant DEFAULT_PAYLOAD_SIZE_LIMIT = 10000; ILayerZeroEndpoint public lzEndpoint; mapping(uint16 => bytes) public trustedRemoteLookup; mapping(uint16 => mapping(uint16 => uint)) public minDstGasLookup; mapping(uint16 => uint) public payloadSizeLimitLookup; address public precrime; event SetPrecrime(address precrime); event SetTrustedRemote(uint16 _remoteChainId, bytes _path); event SetTrustedRemoteAddress(uint16 _remoteChainId, bytes _remoteAddress); event SetMinDstGas(uint16 _dstChainId, uint16 _type, uint _minDstGas); function lzReceive( uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload ) public virtual override { // lzReceive must be called by the endpoint for security require( _msgSender() == address(lzEndpoint), "LzApp: invalid endpoint caller" ); bytes memory trustedRemote = trustedRemoteLookup[_srcChainId]; // if will still block the message pathway from (srcChainId, srcAddress). should not receive message from untrusted remote. require( _srcAddress.length == trustedRemote.length && trustedRemote.length > 0 && keccak256(_srcAddress) == keccak256(trustedRemote), "LzApp: invalid source sending contract" ); _blockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); } // abstract function - the default behaviour of LayerZero is blocking. See: NonblockingLzApp if you dont need to enforce ordered messaging function _blockingLzReceive( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload ) internal virtual; function _lzSend( uint16 _dstChainId, bytes memory _payload, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams, uint _nativeFee ) internal virtual { bytes memory trustedRemote = trustedRemoteLookup[_dstChainId]; require( trustedRemote.length != 0, "LzApp: destination chain is not a trusted source" ); _checkPayloadSize(_dstChainId, _payload.length); lzEndpoint.send{value: _nativeFee}( _dstChainId, trustedRemote, _payload, _refundAddress, _zroPaymentAddress, _adapterParams ); } function _checkGasLimit( uint16 _dstChainId, uint16 _type, bytes memory _adapterParams, uint _extraGas ) internal view virtual { uint providedGasLimit = _getGasLimit(_adapterParams); uint minGasLimit = minDstGasLookup[_dstChainId][_type]; require(minGasLimit > 0, "LzApp: minGasLimit not set"); require( providedGasLimit >= minGasLimit + _extraGas, "LzApp: gas limit is too low" ); } function _getGasLimit( bytes memory _adapterParams ) internal pure virtual returns (uint gasLimit) { require(_adapterParams.length >= 34, "LzApp: invalid adapterParams"); assembly { gasLimit := mload(add(_adapterParams, 34)) } } function _checkPayloadSize( uint16 _dstChainId, uint _payloadSize ) internal view virtual { uint payloadSizeLimit = payloadSizeLimitLookup[_dstChainId]; if (payloadSizeLimit == 0) { // use default if not set payloadSizeLimit = DEFAULT_PAYLOAD_SIZE_LIMIT; } require( _payloadSize <= payloadSizeLimit, "LzApp: payload size is too large" ); } //---------------------------UserApplication config---------------------------------------- function getConfig( uint16 _version, uint16 _chainId, address, uint _configType ) external view returns (bytes memory) { return lzEndpoint.getConfig( _version, _chainId, address(this), _configType ); } // generic config for LayerZero user Application function setConfig( uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config ) external override onlyOwner { lzEndpoint.setConfig(_version, _chainId, _configType, _config); } function setSendVersion(uint16 _version) external override onlyOwner { lzEndpoint.setSendVersion(_version); } function setReceiveVersion(uint16 _version) external override onlyOwner { lzEndpoint.setReceiveVersion(_version); } function forceResumeReceive( uint16 _srcChainId, bytes calldata _srcAddress ) external override onlyOwner { lzEndpoint.forceResumeReceive(_srcChainId, _srcAddress); } // _path = abi.encodePacked(remoteAddress, localAddress) // this function set the trusted path for the cross-chain communication function setTrustedRemote( uint16 _remoteChainId, bytes calldata _path ) external onlyOwner { trustedRemoteLookup[_remoteChainId] = _path; emit SetTrustedRemote(_remoteChainId, _path); } function setTrustedRemoteAddress( uint16 _remoteChainId, bytes calldata _remoteAddress ) external onlyOwner { trustedRemoteLookup[_remoteChainId] = abi.encodePacked( _remoteAddress, address(this) ); emit SetTrustedRemoteAddress(_remoteChainId, _remoteAddress); } function getTrustedRemoteAddress( uint16 _remoteChainId ) external view returns (bytes memory) { bytes memory path = trustedRemoteLookup[_remoteChainId]; require(path.length != 0, "LzApp: no trusted path record"); return path.slice(0, path.length - 20); // the last 20 bytes should be address(this) } function setPrecrime(address _precrime) external onlyOwner { precrime = _precrime; emit SetPrecrime(_precrime); } function setMinDstGas( uint16 _dstChainId, uint16 _packetType, uint _minGas ) external onlyOwner { minDstGasLookup[_dstChainId][_packetType] = _minGas; emit SetMinDstGas(_dstChainId, _packetType, _minGas); } // if the size is 0, it means default size limit function setPayloadSizeLimit( uint16 _dstChainId, uint _size ) external onlyOwner { payloadSizeLimitLookup[_dstChainId] = _size; } //--------------------------- VIEW FUNCTION ---------------------------------------- function isTrustedRemote( uint16 _srcChainId, bytes calldata _srcAddress ) external view returns (bool) { bytes memory trustedSource = trustedRemoteLookup[_srcChainId]; return keccak256(trustedSource) == keccak256(_srcAddress); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./LzApp.sol"; import "../libraries/ExcessivelySafeCall.sol"; /* * the default LayerZero messaging behaviour is blocking, i.e. any failed message will block the channel * this abstract class try-catch all fail messages and store locally for future retry. hence, non-blocking * NOTE: if the srcAddress is not configured properly, it will still block the message pathway from (srcChainId, srcAddress) */ abstract contract NonblockingLzApp is LzApp { using ExcessivelySafeCall for address; mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) public failedMessages; event MessageFailed( uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload, bytes _reason ); event RetryMessageSuccess( uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes32 _payloadHash ); // overriding the virtual function in LzReceiver function _blockingLzReceive( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload ) internal virtual override { (bool success, bytes memory reason) = address(this).excessivelySafeCall( gasleft(), 150, abi.encodeWithSelector( this.nonblockingLzReceive.selector, _srcChainId, _srcAddress, _nonce, _payload ) ); if (!success) { _storeFailedMessage( _srcChainId, _srcAddress, _nonce, _payload, reason ); } } function _storeFailedMessage( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload, bytes memory _reason ) internal virtual { failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload); emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload, _reason); } function nonblockingLzReceive( uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload ) public virtual { // only internal transaction require( _msgSender() == address(this), "NonblockingLzApp: caller must be LzApp" ); _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); } //@notice override this function function _nonblockingLzReceive( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload ) internal virtual; function retryMessage( uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes calldata _payload ) public payable virtual { // assert there is message to retry bytes32 payloadHash = failedMessages[_srcChainId][_srcAddress][_nonce]; require( payloadHash != bytes32(0), "NonblockingLzApp: no stored message" ); require( keccak256(_payload) == payloadHash, "NonblockingLzApp: invalid payload" ); // clear the stored message failedMessages[_srcChainId][_srcAddress][_nonce] = bytes32(0); // execute the message. revert if it fails again _nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload); emit RetryMessageSuccess(_srcChainId, _srcAddress, _nonce, payloadHash); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./OFT/lzApp/NonblockingLzApp.sol"; import "./OFT/libraries/ExcessivelySafeCall.sol"; import "./OFT/interfaces/ICommonOFT.sol"; import "./OFT/interfaces/IOFTReceiverV2.sol"; abstract contract OFTCoreV2Initializable is NonblockingLzApp { using BytesLib for bytes; using ExcessivelySafeCall for address; uint public constant NO_EXTRA_GAS = 0; // packet type uint8 public constant PT_SEND = 0; uint8 public constant PT_SEND_AND_CALL = 1; uint8 public constant sharedDecimals = 8; mapping(uint16 => mapping(bytes => mapping(uint64 => bool))) public creditedPackets; /** * @dev Emitted when `_amount` tokens are moved from the `_sender` to (`_dstChainId`, `_toAddress`) * `_nonce` is the outbound nonce */ event SendToChain( uint16 indexed _dstChainId, address indexed _from, bytes32 indexed _toAddress, uint _amount ); /** * @dev Emitted when `_amount` tokens are received from `_srcChainId` into the `_toAddress` on the local chain. * `_nonce` is the inbound nonce. */ event ReceiveFromChain( uint16 indexed _srcChainId, address indexed _to, uint _amount ); event CallOFTReceivedSuccess( uint16 indexed _srcChainId, bytes _srcAddress, uint64 _nonce, bytes32 _hash ); event NonContractAddress(address _address); /************************************************************************ * public functions ************************************************************************/ function callOnOFTReceived( uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes32 _from, address _to, uint _amount, bytes calldata _payload, uint _gasForCall ) public virtual { require( _msgSender() == address(this), "OFTCore: caller must be OFTCore" ); // send _amount = _transferFrom(address(this), _to, _amount); emit ReceiveFromChain(_srcChainId, _to, _amount); // call IOFTReceiverV2(_to).onOFTReceived{gas: _gasForCall}( _srcChainId, _srcAddress, _nonce, _from, _amount, _payload ); } /************************************************************************ * internal functions ************************************************************************/ function _estimateSendFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bool _useZro, bytes memory _adapterParams ) internal view virtual returns (uint nativeFee, uint zroFee) { // mock the payload for sendFrom() bytes memory payload = _encodeSendPayload(_toAddress, _ld2sd(_amount)); return lzEndpoint.estimateFees( _dstChainId, address(this), payload, _useZro, _adapterParams ); } function _estimateSendAndCallFee( uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes memory _payload, uint64 _dstGasForCall, bool _useZro, bytes memory _adapterParams ) internal view virtual returns (uint nativeFee, uint zroFee) { // mock the payload for sendAndCall() bytes memory payload = _encodeSendAndCallPayload( msg.sender, _toAddress, _ld2sd(_amount), _payload, _dstGasForCall ); return lzEndpoint.estimateFees( _dstChainId, address(this), payload, _useZro, _adapterParams ); } function _nonblockingLzReceive( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload ) internal virtual override { uint8 packetType = _payload.toUint8(0); if (packetType == PT_SEND) { _sendAck(_srcChainId, _srcAddress, _nonce, _payload); } else if (packetType == PT_SEND_AND_CALL) { _sendAndCallAck(_srcChainId, _srcAddress, _nonce, _payload); } else { revert("OFTCore: unknown packet type"); } } function _send( address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams ) internal virtual returns (uint amount) { _checkGasLimit(_dstChainId, PT_SEND, _adapterParams, NO_EXTRA_GAS); (amount, ) = _removeDust(_amount); amount = _debitFrom(_from, _dstChainId, _toAddress, amount); // amount returned should not have dust require(amount > 0, "OFTCore: amount too small"); bytes memory lzPayload = _encodeSendPayload(_toAddress, _ld2sd(amount)); _lzSend( _dstChainId, lzPayload, _refundAddress, _zroPaymentAddress, _adapterParams, msg.value ); emit SendToChain(_dstChainId, _from, _toAddress, amount); } function _sendAck( uint16 _srcChainId, bytes memory, uint64, bytes memory _payload ) internal virtual { (address to, uint64 amountSD) = _decodeSendPayload(_payload); if (to == address(0)) { to = address(0xdead); } uint amount = _sd2ld(amountSD); amount = _creditTo(_srcChainId, to, amount); emit ReceiveFromChain(_srcChainId, to, amount); } function _sendAndCall( address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes memory _payload, uint64 _dstGasForCall, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams ) internal virtual returns (uint amount) { _checkGasLimit( _dstChainId, PT_SEND_AND_CALL, _adapterParams, _dstGasForCall ); (amount, ) = _removeDust(_amount); amount = _debitFrom(_from, _dstChainId, _toAddress, amount); require(amount > 0, "OFTCore: amount too small"); // encode the msg.sender into the payload instead of _from bytes memory lzPayload = _encodeSendAndCallPayload( msg.sender, _toAddress, _ld2sd(amount), _payload, _dstGasForCall ); _lzSend( _dstChainId, lzPayload, _refundAddress, _zroPaymentAddress, _adapterParams, msg.value ); emit SendToChain(_dstChainId, _from, _toAddress, amount); } function _sendAndCallAck( uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload ) internal virtual { ( bytes32 from, address to, uint64 amountSD, bytes memory payloadForCall, uint64 gasForCall ) = _decodeSendAndCallPayload(_payload); bool credited = creditedPackets[_srcChainId][_srcAddress][_nonce]; uint amount = _sd2ld(amountSD); // credit to this contract first, and then transfer to receiver only if callOnOFTReceived() succeeds if (!credited) { amount = _creditTo(_srcChainId, address(this), amount); creditedPackets[_srcChainId][_srcAddress][_nonce] = true; } if (!_isContract(to)) { emit NonContractAddress(to); return; } // workaround for stack too deep uint16 srcChainId = _srcChainId; bytes memory srcAddress = _srcAddress; uint64 nonce = _nonce; bytes memory payload = _payload; bytes32 from_ = from; address to_ = to; uint amount_ = amount; bytes memory payloadForCall_ = payloadForCall; // no gas limit for the call if retry uint gas = credited ? gasleft() : gasForCall; (bool success, bytes memory reason) = address(this).excessivelySafeCall( gasleft(), 150, abi.encodeWithSelector( this.callOnOFTReceived.selector, srcChainId, srcAddress, nonce, from_, to_, amount_, payloadForCall_, gas ) ); if (success) { bytes32 hash = keccak256(payload); emit CallOFTReceivedSuccess(srcChainId, srcAddress, nonce, hash); } else { // store the failed message into the nonblockingLzApp _storeFailedMessage(srcChainId, srcAddress, nonce, payload, reason); } } function _isContract(address _account) internal view returns (bool) { return _account.code.length > 0; } function _ld2sd(uint _amount) internal view virtual returns (uint64) { uint amountSD = _amount / _ld2sdRate(); require(amountSD <= type(uint64).max, "OFTCore: amountSD overflow"); return uint64(amountSD); } function _sd2ld(uint64 _amountSD) internal view virtual returns (uint) { return _amountSD * _ld2sdRate(); } function _removeDust( uint _amount ) internal view virtual returns (uint amountAfter, uint dust) { dust = _amount % _ld2sdRate(); amountAfter = _amount - dust; } function _encodeSendPayload( bytes32 _toAddress, uint64 _amountSD ) internal view virtual returns (bytes memory) { return abi.encodePacked(PT_SEND, _toAddress, _amountSD); } function _decodeSendPayload( bytes memory _payload ) internal view virtual returns (address to, uint64 amountSD) { require( _payload.toUint8(0) == PT_SEND && _payload.length == 41, "OFTCore: invalid payload" ); to = _payload.toAddress(13); // drop the first 12 bytes of bytes32 amountSD = _payload.toUint64(33); } function _encodeSendAndCallPayload( address _from, bytes32 _toAddress, uint64 _amountSD, bytes memory _payload, uint64 _dstGasForCall ) internal view virtual returns (bytes memory) { return abi.encodePacked( PT_SEND_AND_CALL, _toAddress, _amountSD, _addressToBytes32(_from), _dstGasForCall, _payload ); } function _decodeSendAndCallPayload( bytes memory _payload ) internal view virtual returns ( bytes32 from, address to, uint64 amountSD, bytes memory payload, uint64 dstGasForCall ) { require( _payload.toUint8(0) == PT_SEND_AND_CALL, "OFTCore: invalid payload" ); to = _payload.toAddress(13); // drop the first 12 bytes of bytes32 amountSD = _payload.toUint64(33); from = _payload.toBytes32(41); dstGasForCall = _payload.toUint64(73); payload = _payload.slice(81, _payload.length - 81); } function _addressToBytes32( address _address ) internal pure virtual returns (bytes32) { return bytes32(uint(uint160(_address))); } function _debitFrom( address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount ) internal virtual returns (uint); function _creditTo( uint16 _srcChainId, address _toAddress, uint _amount ) internal virtual returns (uint); function _transferFrom( address _from, address _to, uint _amount ) internal virtual returns (uint); function _ld2sdRate() internal view virtual returns (uint); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./BaseOFTV2Initializable.sol"; abstract contract OFTV2Initializable is BaseOFTV2Initializable { uint internal constant ld2sdRate = 10 ** 8; /************************************************************************ * public functions ************************************************************************/ function token() public view virtual override returns (address) { return address(this); } function _ld2sdRate() internal view virtual override returns (uint) { return ld2sdRate; } }
{ "optimizer": { "enabled": true, "runs": 1000 }, "evmVersion": "paris", "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "libraries": {} }
Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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ICommonOFT.LzCallParams","name":"_callParams","type":"tuple"}],"name":"sendFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"},{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint256","name":"_configType","type":"uint256"},{"internalType":"bytes","name":"_config","type":"bytes"}],"name":"setConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint16","name":"_packetType","type":"uint16"},{"internalType":"uint256","name":"_minGas","type":"uint256"}],"name":"setMinDstGas","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"uint256","name":"_size","type":"uint256"}],"name":"setPayloadSizeLimit","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_precrime","type":"address"}],"name":"setPrecrime","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setReceiveVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setSendVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_remoteChainId","type":"uint16"},{"internalType":"bytes","name":"_path","type":"bytes"}],"name":"setTrustedRemote","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_remoteChainId","type":"uint16"},{"internalType":"bytes","name":"_remoteAddress","type":"bytes"}],"name":"setTrustedRemoteAddress","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"sharedDecimals","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"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"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"trustedRemoteLookup","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"unpause","outputs":[],"stateMutability":"nonpayable","type":"function"}]
Contract Creation Code
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Multichain Portfolio | 26 Chains
Chain | Token | Portfolio % | Price | Amount | Value |
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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.