ERC-721
Overview
Max Total Supply
0 OAXA
Holders
78,511
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 OAXALoading...
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Contract Name:
OmniAxAdventures
Compiler Version
v0.8.17+commit.8df45f5f
Optimization Enabled:
Yes with 5 runs
Other Settings:
default evmVersion
Contract Source Code (Solidity Standard Json-Input format)
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8; import "../AdvancedONFT721ATimed.sol"; contract OmniAxAdventures is AdvancedONFT721ATimed { uint64 public maxTokensPerMint = 20; constructor( string memory _name, string memory _symbol, address _lzEndpoint, uint256 _startId, uint256 _maxId, uint256 _maxGlobalId, string memory _baseTokenURI, string memory _hiddenURI, uint16 _tax, uint _price, address _taxRecipient ) AdvancedONFT721ATimed(_name, _symbol, _lzEndpoint, _startId, _maxId, _maxGlobalId, _baseTokenURI, _hiddenURI, _tax, _price, _taxRecipient) {} function tokenURI(uint256 _tokenId) public view virtual override(AdvancedONFT721ATimed) returns(string memory) { require(_exists(_tokenId)); if (state.revealed) { return metadata.hiddenMetadataURI; } return metadata.baseURI; } function setMaxTokensPerMint(uint64 _maxTokensPerMint ) external onlyBenficiaryAndOwner { maxTokensPerMint = _maxTokensPerMint; } function mint(uint256 _nbTokens) external override payable { require(state.saleStarted, "Sale hasn't started"); require(_nbTokens != 0); require(_nextTokenId() + _nbTokens - 1 <= maxId, "max supply reached"); require(_nbTokens * _financeDetails.price <= msg.value, "not enough value"); require(state.startTime + state.mintLength >= block.timestamp, "minting expired"); require (_nbTokens <= maxTokensPerMint, "exceeded max minting limit"); _safeMint(msg.sender, _nbTokens); } }
// 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 pragma solidity ^0.8.0; import "@openzeppelin/contracts/access/Ownable.sol"; import "../interfaces/ILayerZeroReceiver.sol"; import "../interfaces/ILayerZeroUserApplicationConfig.sol"; import "../interfaces/ILayerZeroEndpoint.sol"; import "../util/BytesLib.sol"; /* * a generic LzReceiver implementation */ abstract contract LzApp is Ownable, 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 constant public DEFAULT_PAYLOAD_SIZE_LIMIT = 10000; ILayerZeroEndpoint public immutable 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); constructor(address _endpoint) { lzEndpoint = ILayerZeroEndpoint(_endpoint); } 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] + _extraGas; require(minGasLimit > 0, "LzApp: minGasLimit not set"); require(providedGasLimit >= minGasLimit, "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 _srcChainId, bytes calldata _path) external onlyOwner { trustedRemoteLookup[_srcChainId] = _path; emit SetTrustedRemote(_srcChainId, _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 { require(_minGas > 0, "LzApp: invalid minGas"); 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 "../util/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; constructor(address _endpoint) LzApp(_endpoint) {} 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)); // try-catch all errors/exceptions 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: 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, uint256 _start, uint256 _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, uint256 _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, uint256 _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, uint256 _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, uint256 _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, uint256 _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, uint256 _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, uint256 _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, uint256 _start) internal pure returns (uint256) { require(_bytes.length >= _start + 32, "toUint256_outOfBounds"); uint256 tempUint; assembly { tempUint := mload(add(add(_bytes, 0x20), _start)) } return tempUint; } function toBytes32(bytes memory _bytes, uint256 _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 OR Apache-2.0 pragma solidity >=0.7.6; library ExcessivelySafeCall { uint256 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, uint256 _gas, uint16 _maxCopy, bytes memory _calldata ) internal returns (bool, bytes memory) { // set up for assembly call uint256 _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, uint256 _gas, uint16 _maxCopy, bytes memory _calldata ) internal view returns (bool, bytes memory) { // set up for assembly call uint256 _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); uint256 _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 // OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol) pragma solidity ^0.8.0; import "../utils/Context.sol"; /** * @dev Contract module which provides a basic access control mechanism, where * there is an account (an owner) that can be granted exclusive access to * specific functions. * * By default, the owner account will be the one that deploys the contract. This * can later be changed with {transferOwnership}. * * This module is used through inheritance. It will make available the modifier * `onlyOwner`, which can be applied to your functions to restrict their use to * the owner. */ abstract contract Ownable is Context { address private _owner; event OwnershipTransferred(address indexed previousOwner, address indexed newOwner); /** * @dev Initializes the contract setting the deployer as the initial owner. */ constructor() { _transferOwnership(_msgSender()); } /** * @dev Throws if called by any account other than the owner. */ modifier onlyOwner() { _checkOwner(); _; } /** * @dev Returns the address of the current owner. */ function owner() public view virtual returns (address) { return _owner; } /** * @dev Throws if the sender is not the owner. */ function _checkOwner() internal view virtual { require(owner() == _msgSender(), "Ownable: caller is not the owner"); } /** * @dev Leaves the contract without owner. It will not be possible to call * `onlyOwner` functions. Can only be called by the current owner. * * NOTE: Renouncing ownership will leave the contract without an owner, * thereby disabling any functionality that is only available to the owner. */ function renounceOwnership() public virtual onlyOwner { _transferOwnership(address(0)); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Can only be called by the current owner. */ function transferOwnership(address newOwner) public virtual onlyOwner { require(newOwner != address(0), "Ownable: new owner is the zero address"); _transferOwnership(newOwner); } /** * @dev Transfers ownership of the contract to a new account (`newOwner`). * Internal function without access restriction. */ function _transferOwnership(address newOwner) internal virtual { address oldOwner = _owner; _owner = newOwner; emit OwnershipTransferred(oldOwner, newOwner); } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (security/ReentrancyGuard.sol) pragma solidity ^0.8.0; /** * @dev Contract module that helps prevent reentrant calls to a function. * * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier * available, which can be applied to functions to make sure there are no nested * (reentrant) calls to them. * * Note that because there is a single `nonReentrant` guard, functions marked as * `nonReentrant` may not call one another. This can be worked around by making * those functions `private`, and then adding `external` `nonReentrant` entry * points to them. * * TIP: If you would like to learn more about reentrancy and alternative ways * to protect against it, check out our blog post * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul]. */ abstract contract ReentrancyGuard { // Booleans are more expensive than uint256 or any type that takes up a full // word because each write operation emits an extra SLOAD to first read the // slot's contents, replace the bits taken up by the boolean, and then write // back. This is the compiler's defense against contract upgrades and // pointer aliasing, and it cannot be disabled. // The values being non-zero value makes deployment a bit more expensive, // but in exchange the refund on every call to nonReentrant will be lower in // amount. Since refunds are capped to a percentage of the total // transaction's gas, it is best to keep them low in cases like this one, to // increase the likelihood of the full refund coming into effect. uint256 private constant _NOT_ENTERED = 1; uint256 private constant _ENTERED = 2; uint256 private _status; constructor() { _status = _NOT_ENTERED; } /** * @dev Prevents a contract from calling itself, directly or indirectly. * Calling a `nonReentrant` function from another `nonReentrant` * function is not supported. It is possible to prevent this from happening * by making the `nonReentrant` function external, and making it call a * `private` function that does the actual work. */ modifier nonReentrant() { _nonReentrantBefore(); _; _nonReentrantAfter(); } function _nonReentrantBefore() private { // On the first call to nonReentrant, _status will be _NOT_ENTERED require(_status != _ENTERED, "ReentrancyGuard: reentrant call"); // Any calls to nonReentrant after this point will fail _status = _ENTERED; } function _nonReentrantAfter() private { // By storing the original value once again, a refund is triggered (see // https://eips.ethereum.org/EIPS/eip-2200) _status = _NOT_ENTERED; } /** * @dev Returns true if the reentrancy guard is currently set to "entered", which indicates there is a * `nonReentrant` function in the call stack. */ function _reentrancyGuardEntered() internal view returns (bool) { return _status == _ENTERED; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/Context.sol) pragma solidity ^0.8.0; /** * @dev Provides information about the current execution context, including the * sender of the transaction and its data. While these are generally available * via msg.sender and msg.data, they should not be accessed in such a direct * manner, since when dealing with meta-transactions the account sending and * paying for execution may not be the actual sender (as far as an application * is concerned). * * This contract is only required for intermediate, library-like contracts. */ abstract contract Context { function _msgSender() internal view virtual returns (address) { return msg.sender; } function _msgData() internal view virtual returns (bytes calldata) { return msg.data; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol) pragma solidity ^0.8.0; import "./IERC165.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); * } * ``` * * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation. */ abstract contract ERC165 is IERC165 { /** * @dev See {IERC165-supportsInterface}. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { return interfaceId == type(IERC165).interfaceId; } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol) pragma solidity ^0.8.0; /** * @dev Interface of the ERC165 standard, as defined in the * https://eips.ethereum.org/EIPS/eip-165[EIP]. * * Implementers can declare support of contract interfaces, which can then be * queried by others ({ERC165Checker}). * * For an implementation, see {ERC165}. */ interface IERC165 { /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section] * to learn more about how these ids are created. * * This function call must use less than 30 000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol) pragma solidity ^0.8.0; /** * @dev Standard math utilities missing in the Solidity language. */ library Math { enum Rounding { Down, // Toward negative infinity Up, // Toward infinity Zero // Toward zero } /** * @dev Returns the largest of two numbers. */ function max(uint256 a, uint256 b) internal pure returns (uint256) { return a > b ? a : b; } /** * @dev Returns the smallest of two numbers. */ function min(uint256 a, uint256 b) internal pure returns (uint256) { return a < b ? a : b; } /** * @dev Returns the average of two numbers. The result is rounded towards * zero. */ function average(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b) / 2 can overflow. return (a & b) + (a ^ b) / 2; } /** * @dev Returns the ceiling of the division of two numbers. * * This differs from standard division with `/` in that it rounds up instead * of rounding down. */ function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) { // (a + b - 1) / b can overflow on addition, so we distribute. return a == 0 ? 0 : (a - 1) / b + 1; } /** * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0 * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv) * with further edits by Uniswap Labs also under MIT license. */ function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) { unchecked { // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256 // variables such that product = prod1 * 2^256 + prod0. uint256 prod0; // Least significant 256 bits of the product uint256 prod1; // Most significant 256 bits of the product assembly { let mm := mulmod(x, y, not(0)) prod0 := mul(x, y) prod1 := sub(sub(mm, prod0), lt(mm, prod0)) } // Handle non-overflow cases, 256 by 256 division. if (prod1 == 0) { // Solidity will revert if denominator == 0, unlike the div opcode on its own. // The surrounding unchecked block does not change this fact. // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic. return prod0 / denominator; } // Make sure the result is less than 2^256. Also prevents denominator == 0. require(denominator > prod1, "Math: mulDiv overflow"); /////////////////////////////////////////////// // 512 by 256 division. /////////////////////////////////////////////// // Make division exact by subtracting the remainder from [prod1 prod0]. uint256 remainder; assembly { // Compute remainder using mulmod. remainder := mulmod(x, y, denominator) // Subtract 256 bit number from 512 bit number. prod1 := sub(prod1, gt(remainder, prod0)) prod0 := sub(prod0, remainder) } // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1. // See https://cs.stackexchange.com/q/138556/92363. // Does not overflow because the denominator cannot be zero at this stage in the function. uint256 twos = denominator & (~denominator + 1); assembly { // Divide denominator by twos. denominator := div(denominator, twos) // Divide [prod1 prod0] by twos. prod0 := div(prod0, twos) // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one. twos := add(div(sub(0, twos), twos), 1) } // Shift in bits from prod1 into prod0. prod0 |= prod1 * twos; // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for // four bits. That is, denominator * inv = 1 mod 2^4. uint256 inverse = (3 * denominator) ^ 2; // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works // in modular arithmetic, doubling the correct bits in each step. inverse *= 2 - denominator * inverse; // inverse mod 2^8 inverse *= 2 - denominator * inverse; // inverse mod 2^16 inverse *= 2 - denominator * inverse; // inverse mod 2^32 inverse *= 2 - denominator * inverse; // inverse mod 2^64 inverse *= 2 - denominator * inverse; // inverse mod 2^128 inverse *= 2 - denominator * inverse; // inverse mod 2^256 // Because the division is now exact we can divide by multiplying with the modular inverse of denominator. // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1 // is no longer required. result = prod0 * inverse; return result; } } /** * @notice Calculates x * y / denominator with full precision, following the selected rounding direction. */ function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) { uint256 result = mulDiv(x, y, denominator); if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) { result += 1; } return result; } /** * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down. * * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11). */ function sqrt(uint256 a) internal pure returns (uint256) { if (a == 0) { return 0; } // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target. // // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`. // // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)` // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))` // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)` // // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit. uint256 result = 1 << (log2(a) >> 1); // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128, // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision // into the expected uint128 result. unchecked { result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; result = (result + a / result) >> 1; return min(result, a / result); } } /** * @notice Calculates sqrt(a), following the selected rounding direction. */ function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = sqrt(a); return result + (rounding == Rounding.Up && result * result < a ? 1 : 0); } } /** * @dev Return the log in base 2, rounded down, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 128; } if (value >> 64 > 0) { value >>= 64; result += 64; } if (value >> 32 > 0) { value >>= 32; result += 32; } if (value >> 16 > 0) { value >>= 16; result += 16; } if (value >> 8 > 0) { value >>= 8; result += 8; } if (value >> 4 > 0) { value >>= 4; result += 4; } if (value >> 2 > 0) { value >>= 2; result += 2; } if (value >> 1 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 2, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log2(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log2(value); return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0); } } /** * @dev Return the log in base 10, rounded down, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >= 10 ** 64) { value /= 10 ** 64; result += 64; } if (value >= 10 ** 32) { value /= 10 ** 32; result += 32; } if (value >= 10 ** 16) { value /= 10 ** 16; result += 16; } if (value >= 10 ** 8) { value /= 10 ** 8; result += 8; } if (value >= 10 ** 4) { value /= 10 ** 4; result += 4; } if (value >= 10 ** 2) { value /= 10 ** 2; result += 2; } if (value >= 10 ** 1) { result += 1; } } return result; } /** * @dev Return the log in base 10, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log10(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log10(value); return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0); } } /** * @dev Return the log in base 256, rounded down, of a positive value. * Returns 0 if given 0. * * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string. */ function log256(uint256 value) internal pure returns (uint256) { uint256 result = 0; unchecked { if (value >> 128 > 0) { value >>= 128; result += 16; } if (value >> 64 > 0) { value >>= 64; result += 8; } if (value >> 32 > 0) { value >>= 32; result += 4; } if (value >> 16 > 0) { value >>= 16; result += 2; } if (value >> 8 > 0) { result += 1; } } return result; } /** * @dev Return the log in base 256, following the selected rounding direction, of a positive value. * Returns 0 if given 0. */ function log256(uint256 value, Rounding rounding) internal pure returns (uint256) { unchecked { uint256 result = log256(value); return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol) pragma solidity ^0.8.0; /** * @dev Standard signed math utilities missing in the Solidity language. */ library SignedMath { /** * @dev Returns the largest of two signed numbers. */ function max(int256 a, int256 b) internal pure returns (int256) { return a > b ? a : b; } /** * @dev Returns the smallest of two signed numbers. */ function min(int256 a, int256 b) internal pure returns (int256) { return a < b ? a : b; } /** * @dev Returns the average of two signed numbers without overflow. * The result is rounded towards zero. */ function average(int256 a, int256 b) internal pure returns (int256) { // Formula from the book "Hacker's Delight" int256 x = (a & b) + ((a ^ b) >> 1); return x + (int256(uint256(x) >> 255) & (a ^ b)); } /** * @dev Returns the absolute unsigned value of a signed value. */ function abs(int256 n) internal pure returns (uint256) { unchecked { // must be unchecked in order to support `n = type(int256).min` return uint256(n >= 0 ? n : -n); } } }
// SPDX-License-Identifier: MIT // OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol) pragma solidity ^0.8.0; import "./math/Math.sol"; import "./math/SignedMath.sol"; /** * @dev String operations. */ library Strings { bytes16 private constant _SYMBOLS = "0123456789abcdef"; uint8 private constant _ADDRESS_LENGTH = 20; /** * @dev Converts a `uint256` to its ASCII `string` decimal representation. */ function toString(uint256 value) internal pure returns (string memory) { unchecked { uint256 length = Math.log10(value) + 1; string memory buffer = new string(length); uint256 ptr; /// @solidity memory-safe-assembly assembly { ptr := add(buffer, add(32, length)) } while (true) { ptr--; /// @solidity memory-safe-assembly assembly { mstore8(ptr, byte(mod(value, 10), _SYMBOLS)) } value /= 10; if (value == 0) break; } return buffer; } } /** * @dev Converts a `int256` to its ASCII `string` decimal representation. */ function toString(int256 value) internal pure returns (string memory) { return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value)))); } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation. */ function toHexString(uint256 value) internal pure returns (string memory) { unchecked { return toHexString(value, Math.log256(value) + 1); } } /** * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length. */ function toHexString(uint256 value, uint256 length) internal pure returns (string memory) { bytes memory buffer = new bytes(2 * length + 2); buffer[0] = "0"; buffer[1] = "x"; for (uint256 i = 2 * length + 1; i > 1; --i) { buffer[i] = _SYMBOLS[value & 0xf]; value >>= 4; } require(value == 0, "Strings: hex length insufficient"); return string(buffer); } /** * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation. */ function toHexString(address addr) internal pure returns (string memory) { return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH); } /** * @dev Returns true if the two strings are equal. */ function equal(string memory a, string memory b) internal pure returns (bool) { return keccak256(bytes(a)) == keccak256(bytes(b)); } }
// SPDX-License-Identifier: MIT // ERC721ASpecific Contracts v4.2.3 // Creator: Omni-X pragma solidity ^0.8.4; import './IERC721ASpecific.sol'; /** * @dev Interface of ERC721 token receiver. */ interface ERC721A__IERC721Receiver { function onERC721Received( address operator, address from, uint256 tokenId, bytes calldata data ) external returns (bytes4); } /** * @title ERC721ASpecific * * @dev Implementation of the [ERC721](https://eips.ethereum.org/EIPS/eip-721) * Non-Fungible Token Standard, including the Metadata extension. * Optimized for lower gas during batch mints. * * Token IDs in the mint range (_startTokenId <= tokenId < _getMaxId()), will be treated in storage * as ERC721A, while tokenIds in the global range but outside the mint range will be treated as OZ 721 in storage. * This hybrid mechanic is to allow layerZero logic to mint a specific Id on another chain if a user bridges. * * * Assumptions: * * - An owner cannot have more than 2**64 - 1 (max value of uint64) of supply. * - The maximum token ID cannot exceed 2**256 - 1 (max value of uint256). */ contract ERC721ASpecific is IERC721ASpecific { // Bypass for a `--via-ir` bug (https://github.com/chiru-labs/ERC721A/pull/364). struct TokenApprovalRef { address value; } // ============================================================= // CONSTANTS // ============================================================= // Mask of an entry in packed address data. uint256 private constant _BITMASK_ADDRESS_DATA_ENTRY = (1 << 64) - 1; // The bit position of `numberMinted` in packed address data. uint256 private constant _BITPOS_NUMBER_MINTED = 64; // The bit position of `numberBurned` in packed address data. uint256 private constant _BITPOS_NUMBER_BURNED = 128; // The bit position of `aux` in packed address data. uint256 private constant _BITPOS_AUX = 192; // Mask of all 256 bits in packed address data except the 64 bits for `aux`. uint256 private constant _BITMASK_AUX_COMPLEMENT = (1 << 192) - 1; // The bit position of `startTimestamp` in packed ownership. uint256 private constant _BITPOS_START_TIMESTAMP = 160; // The bit mask of the `burned` bit in packed ownership. uint256 private constant _BITMASK_BURNED = 1 << 224; // The bit position of the `nextInitialized` bit in packed ownership. uint256 private constant _BITPOS_NEXT_INITIALIZED = 225; // The bit mask of the `nextInitialized` bit in packed ownership. uint256 private constant _BITMASK_NEXT_INITIALIZED = 1 << 225; // The bit position of `extraData` in packed ownership. uint256 private constant _BITPOS_EXTRA_DATA = 232; // Mask of all 256 bits in a packed ownership except the 24 bits for `extraData`. uint256 private constant _BITMASK_EXTRA_DATA_COMPLEMENT = (1 << 232) - 1; // The mask of the lower 160 bits for addresses. uint256 private constant _BITMASK_ADDRESS = (1 << 160) - 1; // The maximum `quantity` that can be minted with {_mintERC2309}. // This limit is to prevent overflows on the address data entries. // For a limit of 5000, a total of 3.689e15 calls to {_mintERC2309} // is required to cause an overflow, which is unrealistic. uint256 private constant _MAX_MINT_ERC2309_QUANTITY_LIMIT = 5000; // The `Transfer` event signature is given by: // `keccak256(bytes("Transfer(address,address,uint256)"))`. bytes32 private constant _TRANSFER_EVENT_SIGNATURE = 0xddf252ad1be2c89b69c2b068fc378daa952ba7f163c4a11628f55a4df523b3ef; // ============================================================= // STORAGE // ============================================================= // The next token ID to be minted. uint256 private _currentIndex; // The number of tokens burned. uint256 private _burnCounter; // Token name string private _name; // Token symbol string private _symbol; // Mapping from token ID to ownership details // An empty struct value does not necessarily mean the token is unowned. // See {_packedOwnershipOf} implementation for details. // // Bits Layout: // - [0..159] `addr` // - [160..223] `startTimestamp` // - [224] `burned` // - [225] `nextInitialized` // - [232..255] `extraData` mapping(uint256 => uint256) private _packedOwnerships; // Mapping owner address to address data. // // Bits Layout: // - [0..63] `balance` // - [64..127] `numberMinted` // - [128..191] `numberBurned` // - [192..255] `aux` mapping(address => uint256) private _packedAddressData; // Mapping from token ID to approved address. mapping(uint256 => TokenApprovalRef) private _tokenApprovals; // Mapping from owner to operator approvals mapping(address => mapping(address => bool)) private _operatorApprovals; // ============================================================= // CONSTRUCTOR // ============================================================= constructor(string memory name_, string memory symbol_, uint256 _startId) { _name = name_; _symbol = symbol_; _currentIndex = _startId; } // ============================================================= // TOKEN COUNTING OPERATIONS // ============================================================= function _minTokenId() internal view virtual returns (uint256) { return 0; } function _getMaxId() internal view virtual returns (uint256) { return 10000; } function _getMaxGlobalId() internal view virtual returns (uint256) { return 10000; } /** * @dev Returns the starting token ID. * To change the starting token ID, please override this function. */ function _startTokenId() internal view virtual returns (uint256) { return 0; } /** * @dev Returns the next token ID to be minted. */ function _nextTokenId() internal view virtual returns (uint256) { return _currentIndex; } /** * @dev Returns the total amount of tokens minted in the contract. */ function _totalMinted() internal view virtual returns (uint256) { // Counter underflow is impossible as `_currentIndex` does not decrement, // and it is initialized to `_startTokenId()`. unchecked { return _currentIndex - _startTokenId(); } } /** * @dev Returns the total number of tokens burned. */ function _totalBurned() internal view virtual returns (uint256) { return _burnCounter; } // ============================================================= // ADDRESS DATA OPERATIONS // ============================================================= /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf(address owner) public view virtual override returns (uint256) { if (owner == address(0)) _revert(BalanceQueryForZeroAddress.selector); return _packedAddressData[owner] & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens minted by `owner`. */ function _numberMinted(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_MINTED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the number of tokens burned by or on behalf of `owner`. */ function _numberBurned(address owner) internal view returns (uint256) { return (_packedAddressData[owner] >> _BITPOS_NUMBER_BURNED) & _BITMASK_ADDRESS_DATA_ENTRY; } /** * Returns the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). */ function _getAux(address owner) internal view returns (uint64) { return uint64(_packedAddressData[owner] >> _BITPOS_AUX); } /** * Sets the auxiliary data for `owner`. (e.g. number of whitelist mint slots used). * If there are multiple variables, please pack them into a uint64. */ function _setAux(address owner, uint64 aux) internal virtual { uint256 packed = _packedAddressData[owner]; uint256 auxCasted; // Cast `aux` with assembly to avoid redundant masking. assembly { auxCasted := aux } packed = (packed & _BITMASK_AUX_COMPLEMENT) | (auxCasted << _BITPOS_AUX); _packedAddressData[owner] = packed; } // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) { // The interface IDs are constants representing the first 4 bytes // of the XOR of all function selectors in the interface. // See: [ERC165](https://eips.ethereum.org/EIPS/eip-165) // (e.g. `bytes4(i.functionA.selector ^ i.functionB.selector ^ ...)`) return interfaceId == 0x01ffc9a7 || // ERC165 interface ID for ERC165. interfaceId == 0x80ac58cd || // ERC165 interface ID for ERC721. interfaceId == 0x5b5e139f; // ERC165 interface ID for ERC721Metadata. } // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() public view virtual override returns (string memory) { return _name; } /** * @dev Returns the token collection symbol. */ function symbol() public view virtual override returns (string memory) { return _symbol; } /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) public view virtual override returns (string memory) { if (!_exists(tokenId)) _revert(URIQueryForNonexistentToken.selector); string memory baseURI = _baseURI(); return bytes(baseURI).length != 0 ? string(abi.encodePacked(baseURI, _toString(tokenId))) : ''; } /** * @dev Base URI for computing {tokenURI}. If set, the resulting URI for each * token will be the concatenation of the `baseURI` and the `tokenId`. Empty * by default, it can be overridden in child contracts. */ function _baseURI() internal view virtual returns (string memory) { return ''; } // ============================================================= // OWNERSHIPS OPERATIONS // ============================================================= /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) public view virtual override returns (address) { return address(uint160(_packedOwnershipOf(tokenId))); } /** * @dev Gas spent here starts off proportional to the maximum mint batch size. * It gradually moves to O(1) as tokens get transferred around over time. * This will only hold valid values for nextInitialized and burned if tokenId is within mint range (_startTokenId <= tokenId <= maxId) */ function _ownershipOf(uint256 tokenId) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnershipOf(tokenId)); } /** * @dev Returns the unpacked `TokenOwnership` struct at `index`. */ function _ownershipAt(uint256 index) internal view virtual returns (TokenOwnership memory) { return _unpackedOwnership(_packedOwnerships[index]); } /** * @dev Returns whether the ownership slot at `index` is initialized. * An uninitialized slot does not necessarily mean that the slot has no owner. */ function _ownershipIsInitialized(uint256 index) internal view virtual returns (bool) { return _packedOwnerships[index] != 0; } /** * @dev Initializes the ownership slot minted at `index` for efficiency purposes. */ function _initializeOwnershipAt(uint256 index) internal virtual { if (_packedOwnerships[index] == 0) { _packedOwnerships[index] = _packedOwnershipOf(index); } } /** * Returns the packed ownership data of `tokenId`. */ function _packedOwnershipOf(uint256 tokenId) private view returns (uint256 packed) { if (_startTokenId() <= tokenId && tokenId < _currentIndex) { packed = _packedOwnerships[tokenId]; // If the data at the starting slot does not exist, start the scan. if (packed == 0) { // Invariant: // There will always be an initialized ownership slot // (i.e. `ownership.addr != address(0) && ownership.burned == false`) // before an unintialized ownership slot // (i.e. `ownership.addr == address(0) && ownership.burned == false`) // Hence, `tokenId` will not underflow. // // We can directly compare the packed value. // If the address is zero, packed will be zero. for (;;) { unchecked { packed = _packedOwnerships[--tokenId]; } if (packed == 0) continue; if (packed & _BITMASK_BURNED == 0) return packed; // Otherwise, the token is burned, and we must revert. // This handles the case of batch burned tokens, where only the burned bit // of the starting slot is set, and remaining slots are left uninitialized. _revert(OwnerQueryForNonexistentToken.selector); } } // Otherwise, the data exists and we can skip the scan. // This is possible because we have already achieved the target condition. // This saves 2143 gas on transfers of initialized tokens. // If the token is not burned, return `packed`. Otherwise, revert. if (packed & _BITMASK_BURNED == 0) return packed; } else if (tokenId > 0 && tokenId <= _getMaxGlobalId()) { packed = _packedOwnerships[tokenId]; if (packed != 0) return packed; } _revert(OwnerQueryForNonexistentToken.selector); } /** * @dev Returns the unpacked `TokenOwnership` struct from `packed`. */ function _unpackedOwnership(uint256 packed) private pure returns (TokenOwnership memory ownership) { ownership.addr = address(uint160(packed)); ownership.startTimestamp = uint64(packed >> _BITPOS_START_TIMESTAMP); ownership.burned = packed & _BITMASK_BURNED != 0; ownership.extraData = uint24(packed >> _BITPOS_EXTRA_DATA); } /** * @dev Packs ownership data into a single uint256. */ function _packOwnershipData(address owner, uint256 flags) private view returns (uint256 result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // `owner | (block.timestamp << _BITPOS_START_TIMESTAMP) | flags`. result := or(owner, or(shl(_BITPOS_START_TIMESTAMP, timestamp()), flags)) } } /** * @dev Returns the `nextInitialized` flag set if `quantity` equals 1. */ function _nextInitializedFlag(uint256 quantity) private pure returns (uint256 result) { // For branchless setting of the `nextInitialized` flag. assembly { // `(quantity == 1) << _BITPOS_NEXT_INITIALIZED`. result := shl(_BITPOS_NEXT_INITIALIZED, eq(quantity, 1)) } } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. See {ERC721A-_approve}. * * Requirements: * * - The caller must own the token or be an approved operator. */ function approve(address to, uint256 tokenId) public payable virtual override { _approve(to, tokenId, true); } /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) public view virtual override returns (address) { if (!_exists(tokenId)) _revert(ApprovalQueryForNonexistentToken.selector); return _tokenApprovals[tokenId].value; } /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} * for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool approved) public virtual override { _operatorApprovals[_msgSenderERC721A()][operator] = approved; emit ApprovalForAll(_msgSenderERC721A(), operator, approved); } /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) { return _operatorApprovals[owner][operator]; } /** * @dev Returns whether `tokenId` exists. * * Tokens can be managed by their owner or approved accounts via {approve} or {setApprovalForAll}. * * Tokens start existing when they are minted. See {_mint}. */ function _exists(uint256 tokenId) internal view virtual returns (bool result) { if (_startTokenId() <= tokenId && tokenId < _currentIndex) { uint256 packed; while ((packed = _packedOwnerships[tokenId]) == 0) --tokenId; result = packed & _BITMASK_BURNED == 0; } else { if (tokenId > 0 && _getMaxGlobalId() >= tokenId) { result = _packedOwnerships[tokenId] != 0; } } } /** * @dev Returns whether `msgSender` is equal to `approvedAddress` or `owner`. */ function _isSenderApprovedOrOwner( address approvedAddress, address owner, address msgSender ) private pure returns (bool result) { assembly { // Mask `owner` to the lower 160 bits, in case the upper bits somehow aren't clean. owner := and(owner, _BITMASK_ADDRESS) // Mask `msgSender` to the lower 160 bits, in case the upper bits somehow aren't clean. msgSender := and(msgSender, _BITMASK_ADDRESS) // `msgSender == owner || msgSender == approvedAddress`. result := or(eq(msgSender, owner), eq(msgSender, approvedAddress)) } } /** * @dev Returns the storage slot and value for the approved address of `tokenId`. */ function _getApprovedSlotAndAddress(uint256 tokenId) private view returns (uint256 approvedAddressSlot, address approvedAddress) { TokenApprovalRef storage tokenApproval = _tokenApprovals[tokenId]; // The following is equivalent to `approvedAddress = _tokenApprovals[tokenId].value`. assembly { approvedAddressSlot := tokenApproval.slot approvedAddress := sload(approvedAddressSlot) } } // ============================================================= // TRANSFER OPERATIONS // ============================================================= /** * @dev This function is called by and only by LayerZero ONFT721A * * This function bypasses token approvals because of the above assumption * * This function should act just as transferFrom (minus the approval) for tokenIds in this chains mint range * Otherwise this function should act just as transferFrom minus adjusting nextInitialized because Ids in this * range are treated as OZ 721. */ function bridgeTransfer( address from, address to, uint256 tokenId ) internal { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); from = address(uint160(uint256(uint160(from)) & _BITMASK_ADDRESS)); if (address(uint160(prevOwnershipPacked)) != from) _revert(TransferFromIncorrectOwner.selector); if (_startTokenId() <= tokenId && tokenId <= _getMaxId()) { unchecked { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, 0 ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } } else { unchecked { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, 0 ); // no need to adjust next initialized value since tokenIds not in the mint are mapped one to one with an owner (like OZ) unlike tokenIds in the mintRange } } uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS; assembly { // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. from, // `from`. toMasked, // `to`. tokenId // `tokenId`. ) } if (toMasked == 0) _revert(TransferToZeroAddress.selector); } /** * @dev Transfers `tokenId` from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token * by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) public payable virtual override { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); // Mask `from` to the lower 160 bits, in case the upper bits somehow aren't clean. from = address(uint160(uint256(uint160(from)) & _BITMASK_ADDRESS)); if (address(uint160(prevOwnershipPacked)) != from) _revert(TransferFromIncorrectOwner.selector); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector); _beforeTokenTransfers(from, to, tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // We can directly increment and decrement the balances. --_packedAddressData[from]; // Updates: `balance -= 1`. ++_packedAddressData[to]; // Updates: `balance += 1`. // Updates: // - `address` to the next owner. // - `startTimestamp` to the timestamp of transfering. // - `burned` to `false`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( to, _BITMASK_NEXT_INITIALIZED | _nextExtraData(from, to, prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS; assembly { // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. from, // `from`. toMasked, // `to`. tokenId // `tokenId`. ) } if (toMasked == 0) _revert(TransferToZeroAddress.selector); _afterTokenTransfers(from, to, tokenId, 1); } /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) public payable virtual override { safeTransferFrom(from, to, tokenId, ''); } /** * @dev Safely transfers `tokenId` token from `from` to `to`. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be approved to move this token * by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes memory _data ) public payable virtual override { transferFrom(from, to, tokenId); if (to.code.length != 0) if (!_checkContractOnERC721Received(from, to, tokenId, _data)) { _revert(TransferToNonERC721ReceiverImplementer.selector); } } /** * @dev Hook that is called before a set of serially-ordered token IDs * are about to be transferred. This includes minting. * And also called before burning one token. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _beforeTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Hook that is called after a set of serially-ordered token IDs * have been transferred. This includes minting. * And also called after one token has been burned. * * `startTokenId` - the first token ID to be transferred. * `quantity` - the amount to be transferred. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` has been * transferred to `to`. * - When `from` is zero, `tokenId` has been minted for `to`. * - When `to` is zero, `tokenId` has been burned by `from`. * - `from` and `to` are never both zero. */ function _afterTokenTransfers( address from, address to, uint256 startTokenId, uint256 quantity ) internal virtual {} /** * @dev Private function to invoke {IERC721Receiver-onERC721Received} on a target contract. * * `from` - Previous owner of the given token ID. * `to` - Target address that will receive the token. * `tokenId` - Token ID to be transferred. * `_data` - Optional data to send along with the call. * * Returns whether the call correctly returned the expected magic value. */ function _checkContractOnERC721Received( address from, address to, uint256 tokenId, bytes memory _data ) private returns (bool) { try ERC721A__IERC721Receiver(to).onERC721Received(_msgSenderERC721A(), from, tokenId, _data) returns ( bytes4 retval ) { return retval == ERC721A__IERC721Receiver(to).onERC721Received.selector; } catch (bytes memory reason) { if (reason.length == 0) { _revert(TransferToNonERC721ReceiverImplementer.selector); } assembly { revert(add(32, reason), mload(reason)) } } } // ============================================================= // MINT OPERATIONS // ============================================================= /** * @dev minting function only used by LZ ONFT721A contract. This * function is only called in the case someone bridge to this chain * and the tokenId doesn't already exist and is owned by the NFT contract * * */ function bridgeMint( address to, uint256 tokenId ) internal { require(tokenId > 0 && tokenId <= _getMaxGlobalId()); require(tokenId < _startTokenId() || tokenId > _getMaxId()); unchecked { // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[tokenId] = _packOwnershipData( to, 0 ); // I believe these operations are unecessary since quantity is always 1 _packedAddressData[to] += 1 * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS; if (toMasked == 0) _revert(MintToZeroAddress.selector); assembly { // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. tokenId // `tokenId`. ) } } } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {Transfer} event for each mint. */ function _mint(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (quantity == 0) _revert(MintZeroQuantity.selector); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are incredibly unrealistic. // `balance` and `numberMinted` have a maximum limit of 2**64. // `tokenId` has a maximum limit of 2**256. unchecked { // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Mask `to` to the lower 160 bits, in case the upper bits somehow aren't clean. uint256 toMasked = uint256(uint160(to)) & _BITMASK_ADDRESS; if (toMasked == 0) _revert(MintToZeroAddress.selector); uint256 end = startTokenId + quantity; uint256 tokenId = startTokenId; do { assembly { // Emit the `Transfer` event. log4( 0, // Start of data (0, since no data). 0, // End of data (0, since no data). _TRANSFER_EVENT_SIGNATURE, // Signature. 0, // `address(0)`. toMasked, // `to`. tokenId // `tokenId`. ) } // The `!=` check ensures that large values of `quantity` // that overflows uint256 will make the loop run out of gas. } while (++tokenId != end); _currentIndex = end; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Mints `quantity` tokens and transfers them to `to`. * * This function is intended for efficient minting only during contract creation. * * It emits only one {ConsecutiveTransfer} as defined in * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309), * instead of a sequence of {Transfer} event(s). * * Calling this function outside of contract creation WILL make your contract * non-compliant with the ERC721 standard. * For full ERC721 compliance, substituting ERC721 {Transfer} event(s) with the ERC2309 * {ConsecutiveTransfer} event is only permissible during contract creation. * * Requirements: * * - `to` cannot be the zero address. * - `quantity` must be greater than 0. * * Emits a {ConsecutiveTransfer} event. */ function _mintERC2309(address to, uint256 quantity) internal virtual { uint256 startTokenId = _currentIndex; if (to == address(0)) _revert(MintToZeroAddress.selector); if (quantity == 0) _revert(MintZeroQuantity.selector); if (quantity > _MAX_MINT_ERC2309_QUANTITY_LIMIT) _revert(MintERC2309QuantityExceedsLimit.selector); _beforeTokenTransfers(address(0), to, startTokenId, quantity); // Overflows are unrealistic due to the above check for `quantity` to be below the limit. unchecked { // Updates: // - `balance += quantity`. // - `numberMinted += quantity`. // // We can directly add to the `balance` and `numberMinted`. _packedAddressData[to] += quantity * ((1 << _BITPOS_NUMBER_MINTED) | 1); // Updates: // - `address` to the owner. // - `startTimestamp` to the timestamp of minting. // - `burned` to `false`. // - `nextInitialized` to `quantity == 1`. _packedOwnerships[startTokenId] = _packOwnershipData( to, _nextInitializedFlag(quantity) | _nextExtraData(address(0), to, 0) ); emit ConsecutiveTransfer(startTokenId, startTokenId + quantity - 1, address(0), to); _currentIndex = startTokenId + quantity; } _afterTokenTransfers(address(0), to, startTokenId, quantity); } /** * @dev Safely mints `quantity` tokens and transfers them to `to`. * * Requirements: * * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called for each safe transfer. * - `quantity` must be greater than 0. * * See {_mint}. * * Emits a {Transfer} event for each mint. */ function _safeMint( address to, uint256 quantity, bytes memory _data ) internal virtual { _mint(to, quantity); unchecked { if (to.code.length != 0) { uint256 end = _currentIndex; uint256 index = end - quantity; do { if (!_checkContractOnERC721Received(address(0), to, index++, _data)) { _revert(TransferToNonERC721ReceiverImplementer.selector); } } while (index < end); // Reentrancy protection. if (_currentIndex != end) _revert(bytes4(0)); } } } /** * @dev Equivalent to `_safeMint(to, quantity, '')`. */ function _safeMint(address to, uint256 quantity) internal virtual { _safeMint(to, quantity, ''); } // ============================================================= // APPROVAL OPERATIONS // ============================================================= /** * @dev Equivalent to `_approve(to, tokenId, false)`. */ function _approve(address to, uint256 tokenId) internal virtual { _approve(to, tokenId, false); } /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the * zero address clears previous approvals. * * Requirements: * * - `tokenId` must exist. * * Emits an {Approval} event. */ function _approve( address to, uint256 tokenId, bool approvalCheck ) internal virtual { address owner = ownerOf(tokenId); if (approvalCheck && _msgSenderERC721A() != owner) if (!isApprovedForAll(owner, _msgSenderERC721A())) { _revert(ApprovalCallerNotOwnerNorApproved.selector); } _tokenApprovals[tokenId].value = to; emit Approval(owner, to, tokenId); } // ============================================================= // BURN OPERATIONS // ============================================================= /** * @dev Equivalent to `_burn(tokenId, false)`. */ function _burn(uint256 tokenId) internal virtual { _burn(tokenId, false); } /** * @dev Destroys `tokenId`. * The approval is cleared when the token is burned. * * Requirements: * * - `tokenId` must exist. * * Emits a {Transfer} event. */ function _burn(uint256 tokenId, bool approvalCheck) internal virtual { uint256 prevOwnershipPacked = _packedOwnershipOf(tokenId); address from = address(uint160(prevOwnershipPacked)); (uint256 approvedAddressSlot, address approvedAddress) = _getApprovedSlotAndAddress(tokenId); if (approvalCheck) { // The nested ifs save around 20+ gas over a compound boolean condition. if (!_isSenderApprovedOrOwner(approvedAddress, from, _msgSenderERC721A())) if (!isApprovedForAll(from, _msgSenderERC721A())) _revert(TransferCallerNotOwnerNorApproved.selector); } _beforeTokenTransfers(from, address(0), tokenId, 1); // Clear approvals from the previous owner. assembly { if approvedAddress { // This is equivalent to `delete _tokenApprovals[tokenId]`. sstore(approvedAddressSlot, 0) } } // Underflow of the sender's balance is impossible because we check for // ownership above and the recipient's balance can't realistically overflow. // Counter overflow is incredibly unrealistic as `tokenId` would have to be 2**256. unchecked { // Updates: // - `balance -= 1`. // - `numberBurned += 1`. // // We can directly decrement the balance, and increment the number burned. // This is equivalent to `packed -= 1; packed += 1 << _BITPOS_NUMBER_BURNED;`. _packedAddressData[from] += (1 << _BITPOS_NUMBER_BURNED) - 1; // Updates: // - `address` to the last owner. // - `startTimestamp` to the timestamp of burning. // - `burned` to `true`. // - `nextInitialized` to `true`. _packedOwnerships[tokenId] = _packOwnershipData( from, (_BITMASK_BURNED | _BITMASK_NEXT_INITIALIZED) | _nextExtraData(from, address(0), prevOwnershipPacked) ); // If the next slot may not have been initialized (i.e. `nextInitialized == false`) . if (prevOwnershipPacked & _BITMASK_NEXT_INITIALIZED == 0) { uint256 nextTokenId = tokenId + 1; // If the next slot's address is zero and not burned (i.e. packed value is zero). if (_packedOwnerships[nextTokenId] == 0) { // If the next slot is within bounds. if (nextTokenId != _currentIndex) { // Initialize the next slot to maintain correctness for `ownerOf(tokenId + 1)`. _packedOwnerships[nextTokenId] = prevOwnershipPacked; } } } } emit Transfer(from, address(0), tokenId); _afterTokenTransfers(from, address(0), tokenId, 1); // Overflow not possible, as _burnCounter cannot be exceed _currentIndex times. unchecked { _burnCounter++; } } // ============================================================= // EXTRA DATA OPERATIONS // ============================================================= /** * @dev Directly sets the extra data for the ownership data `index`. */ function _setExtraDataAt(uint256 index, uint24 extraData) internal virtual { uint256 packed = _packedOwnerships[index]; if (packed == 0) _revert(OwnershipNotInitializedForExtraData.selector); uint256 extraDataCasted; // Cast `extraData` with assembly to avoid redundant masking. assembly { extraDataCasted := extraData } packed = (packed & _BITMASK_EXTRA_DATA_COMPLEMENT) | (extraDataCasted << _BITPOS_EXTRA_DATA); _packedOwnerships[index] = packed; } /** * @dev Called during each token transfer to set the 24bit `extraData` field. * Intended to be overridden by the cosumer contract. * * `previousExtraData` - the value of `extraData` before transfer. * * Calling conditions: * * - When `from` and `to` are both non-zero, `from`'s `tokenId` will be * transferred to `to`. * - When `from` is zero, `tokenId` will be minted for `to`. * - When `to` is zero, `tokenId` will be burned by `from`. * - `from` and `to` are never both zero. */ function _extraData( address from, address to, uint24 previousExtraData ) internal view virtual returns (uint24) {} /** * @dev Returns the next extra data for the packed ownership data. * The returned result is shifted into position. */ function _nextExtraData( address from, address to, uint256 prevOwnershipPacked ) private view returns (uint256) { uint24 extraData = uint24(prevOwnershipPacked >> _BITPOS_EXTRA_DATA); return uint256(_extraData(from, to, extraData)) << _BITPOS_EXTRA_DATA; } // ============================================================= // OTHER OPERATIONS // ============================================================= /** * @dev Returns the message sender (defaults to `msg.sender`). * * If you are writing GSN compatible contracts, you need to override this function. */ function _msgSenderERC721A() internal view virtual returns (address) { return msg.sender; } /** * @dev Converts a uint256 to its ASCII string decimal representation. */ function _toString(uint256 value) internal pure virtual returns (string memory str) { assembly { // The maximum value of a uint256 contains 78 digits (1 byte per digit), but // we allocate 0xa0 bytes to keep the free memory pointer 32-byte word aligned. // We will need 1 word for the trailing zeros padding, 1 word for the length, // and 3 words for a maximum of 78 digits. Total: 5 * 0x20 = 0xa0. let m := add(mload(0x40), 0xa0) // Update the free memory pointer to allocate. mstore(0x40, m) // Assign the `str` to the end. str := sub(m, 0x20) // Zeroize the slot after the string. mstore(str, 0) // Cache the end of the memory to calculate the length later. let end := str // We write the string from rightmost digit to leftmost digit. // The following is essentially a do-while loop that also handles the zero case. // prettier-ignore for { let temp := value } 1 {} { str := sub(str, 1) // Write the character to the pointer. // The ASCII index of the '0' character is 48. mstore8(str, add(48, mod(temp, 10))) // Keep dividing `temp` until zero. temp := div(temp, 10) // prettier-ignore if iszero(temp) { break } } let length := sub(end, str) // Move the pointer 32 bytes leftwards to make room for the length. str := sub(str, 0x20) // Store the length. mstore(str, length) } } /** * @dev For more efficient reverts. */ function _revert(bytes4 errorSelector) internal pure { assembly { mstore(0x00, errorSelector) revert(0x00, 0x04) } } }
// SPDX-License-Identifier: BUSL-1.1 pragma solidity ^0.8; import "../ONFT721A.sol"; import "@openzeppelin/contracts/utils/Strings.sol"; contract AdvancedONFT721ATimed is ONFT721A { using Strings for uint; struct FinanceDetails { address payable beneficiary; address payable taxRecipient; uint16 tax; // 100% = 10000 uint price; } struct Metadata { string baseURI; string hiddenMetadataURI; } struct NFTState { bool saleStarted; bool revealed; uint256 startTime; // UNIX timestampt uint256 mintLength; // number of seconds after start time mint is available for } uint256 public startId; uint256 public maxId; uint256 public maxGlobalId; FinanceDetails public _financeDetails; Metadata public metadata; NFTState public state; modifier onlyBenficiaryAndOwner() { require(msg.sender == _financeDetails.beneficiary || msg.sender == owner(), "Caller is not beneficiary or owner"); _; } constructor( string memory _name, string memory _symbol, address _lzEndpoint, uint256 _startId, uint256 _maxId, uint256 _maxGlobalId, string memory _baseTokenURI, string memory _hiddenURI, uint16 _tax, uint _price, address _taxRecipient ) ONFT721A(_name, _symbol, 1, _lzEndpoint, _startId) { startId = _startId; maxGlobalId = _maxGlobalId; maxId = _maxId; _financeDetails = FinanceDetails(payable(msg.sender), payable(_taxRecipient), _tax, _price ); metadata = Metadata(_baseTokenURI, _hiddenURI); } function mint(uint256 _nbTokens) external virtual payable { require(state.saleStarted, "Sale hasn't started"); require(_nbTokens != 0); require(_nextTokenId() + _nbTokens - 1 <= maxId, "max supply reached"); require(_nbTokens * _financeDetails.price <= msg.value, "not enough value"); require(state.startTime + state.mintLength >= block.timestamp, "minting expired"); _safeMint(msg.sender, _nbTokens); } function _getMaxGlobalId() internal view override returns (uint256) { return maxGlobalId; } function _getMaxId() internal view override returns (uint256) { return maxId; } function _startTokenId() internal view override returns(uint256) { return startId; } function setMintRange(uint32 _start, uint32 _end) external onlyOwner { require (_start > uint32(_totalMinted())); require (_end > _start); startId = _start; maxId = _end; } function setFinanceDetails(FinanceDetails calldata _finance) external onlyOwner { _financeDetails = _finance; } function setMetadata(Metadata calldata _metadata) external onlyBenficiaryAndOwner { metadata = _metadata; } function setNftState(NFTState calldata _state) external onlyBenficiaryAndOwner { state = NFTState(_state.saleStarted, _state.revealed, block.timestamp, _state.mintLength); } function withdraw() external onlyBenficiaryAndOwner { require(_financeDetails.beneficiary != address(0)); require(_financeDetails.taxRecipient != address(0)); uint balance = address(this).balance; uint taxFee = balance * _financeDetails.tax / 10000; require(payable(_financeDetails.beneficiary).send(balance - taxFee)); require(payable(_financeDetails.taxRecipient).send(taxFee)); require(payable(_financeDetails.beneficiary).send(address(this).balance)); } function _baseURI() internal view override returns (string memory) { return metadata.baseURI; } function tokenURI(uint256 _tokenId) public view virtual override(ERC721ASpecific, IERC721ASpecific) returns (string memory) { require(_exists(_tokenId)); if (state.revealed) { return metadata.hiddenMetadataURI; } return string(abi.encodePacked(_baseURI(), _tokenId.toString())); } }
// SPDX-License-Identifier: MIT // ERC721A Contracts v4.2.3 // Creator: Chiru Labs pragma solidity ^0.8.4; /** * @dev Interface of ERC721A. */ interface IERC721ASpecific { /** * The caller must own the token or be an approved operator. */ error ApprovalCallerNotOwnerNorApproved(); /** * The token does not exist. */ error ApprovalQueryForNonexistentToken(); /** * Cannot query the balance for the zero address. */ error BalanceQueryForZeroAddress(); /** * Cannot mint to the zero address. */ error MintToZeroAddress(); /** * The quantity of tokens minted must be more than zero. */ error MintZeroQuantity(); /** * The token does not exist. */ error OwnerQueryForNonexistentToken(); /** * The caller must own the token or be an approved operator. */ error TransferCallerNotOwnerNorApproved(); /** * The token must be owned by `from`. */ error TransferFromIncorrectOwner(); /** * Cannot safely transfer to a contract that does not implement the * ERC721Receiver interface. */ error TransferToNonERC721ReceiverImplementer(); /** * Cannot transfer to the zero address. */ error TransferToZeroAddress(); /** * The token does not exist. */ error URIQueryForNonexistentToken(); /** * The `quantity` minted with ERC2309 exceeds the safety limit. */ error MintERC2309QuantityExceedsLimit(); /** * The `extraData` cannot be set on an unintialized ownership slot. */ error OwnershipNotInitializedForExtraData(); // ============================================================= // STRUCTS // ============================================================= struct TokenOwnership { // The address of the owner. address addr; // Stores the start time of ownership with minimal overhead for tokenomics. uint64 startTimestamp; // Whether the token has been burned. bool burned; // Arbitrary data similar to `startTimestamp` that can be set via {_extraData}. uint24 extraData; } // ============================================================= // TOKEN COUNTERS // ============================================================= // ============================================================= // IERC165 // ============================================================= /** * @dev Returns true if this contract implements the interface defined by * `interfaceId`. See the corresponding * [EIP section](https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified) * to learn more about how these ids are created. * * This function call must use less than 30000 gas. */ function supportsInterface(bytes4 interfaceId) external view returns (bool); // ============================================================= // IERC721 // ============================================================= /** * @dev Emitted when `tokenId` token is transferred from `from` to `to`. */ event Transfer(address indexed from, address indexed to, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables `approved` to manage the `tokenId` token. */ event Approval(address indexed owner, address indexed approved, uint256 indexed tokenId); /** * @dev Emitted when `owner` enables or disables * (`approved`) `operator` to manage all of its assets. */ event ApprovalForAll(address indexed owner, address indexed operator, bool approved); /** * @dev Returns the number of tokens in `owner`'s account. */ function balanceOf(address owner) external view returns (uint256 balance); /** * @dev Returns the owner of the `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function ownerOf(uint256 tokenId) external view returns (address owner); /** * @dev Safely transfers `tokenId` token from `from` to `to`, * checking first that contract recipients are aware of the ERC721 protocol * to prevent tokens from being forever locked. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must exist and be owned by `from`. * - If the caller is not `from`, it must be have been allowed to move * this token by either {approve} or {setApprovalForAll}. * - If `to` refers to a smart contract, it must implement * {IERC721Receiver-onERC721Received}, which is called upon a safe transfer. * * Emits a {Transfer} event. */ function safeTransferFrom( address from, address to, uint256 tokenId, bytes calldata data ) external payable; /** * @dev Equivalent to `safeTransferFrom(from, to, tokenId, '')`. */ function safeTransferFrom( address from, address to, uint256 tokenId ) external payable; /** * @dev Transfers `tokenId` from `from` to `to`. * * WARNING: Usage of this method is discouraged, use {safeTransferFrom} * whenever possible. * * Requirements: * * - `from` cannot be the zero address. * - `to` cannot be the zero address. * - `tokenId` token must be owned by `from`. * - If the caller is not `from`, it must be approved to move this token * by either {approve} or {setApprovalForAll}. * * Emits a {Transfer} event. */ function transferFrom( address from, address to, uint256 tokenId ) external payable; /** * @dev Gives permission to `to` to transfer `tokenId` token to another account. * The approval is cleared when the token is transferred. * * Only a single account can be approved at a time, so approving the * zero address clears previous approvals. * * Requirements: * * - The caller must own the token or be an approved operator. * - `tokenId` must exist. * * Emits an {Approval} event. */ function approve(address to, uint256 tokenId) external payable; /** * @dev Approve or remove `operator` as an operator for the caller. * Operators can call {transferFrom} or {safeTransferFrom} * for any token owned by the caller. * * Requirements: * * - The `operator` cannot be the caller. * * Emits an {ApprovalForAll} event. */ function setApprovalForAll(address operator, bool _approved) external; /** * @dev Returns the account approved for `tokenId` token. * * Requirements: * * - `tokenId` must exist. */ function getApproved(uint256 tokenId) external view returns (address operator); /** * @dev Returns if the `operator` is allowed to manage all of the assets of `owner`. * * See {setApprovalForAll}. */ function isApprovedForAll(address owner, address operator) external view returns (bool); // ============================================================= // IERC721Metadata // ============================================================= /** * @dev Returns the token collection name. */ function name() external view returns (string memory); /** * @dev Returns the token collection symbol. */ function symbol() external view returns (string memory); /** * @dev Returns the Uniform Resource Identifier (URI) for `tokenId` token. */ function tokenURI(uint256 tokenId) external view returns (string memory); // ============================================================= // IERC2309 // ============================================================= /** * @dev Emitted when tokens in `fromTokenId` to `toTokenId` * (inclusive) is transferred from `from` to `to`, as defined in the * [ERC2309](https://eips.ethereum.org/EIPS/eip-2309) standard. * * See {_mintERC2309} for more details. */ event ConsecutiveTransfer(uint256 indexed fromTokenId, uint256 toTokenId, address indexed from, address indexed to); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IONFT721ACore.sol"; import "./IERC721ASpecific.sol"; /** * @dev Interface of the ONFT standard */ interface IONFT721A is IONFT721ACore, IERC721ASpecific { function supportsInterface(bytes4 interfaceId) external view override(IERC165, IERC721ASpecific) returns (bool); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@openzeppelin/contracts/utils/introspection/IERC165.sol"; interface IONFT721ACore is IERC165 { /** * @dev Emitted when `_tokenIds[]` are moved from the `_sender` to (`_dstChainId`, `_toAddress`) * `_nonce` is the outbound nonce from */ event SendToChain(uint16 indexed _dstChainId, address indexed _from, bytes indexed _toAddress, uint[] _tokenIds); event ReceiveFromChain(uint16 indexed _srcChainId, bytes indexed _srcAddress, address indexed _toAddress, uint[] _tokenIds); event SetMinGasToTransferAndStore(uint256 _minGasToTransferAndStore); event SetDstChainIdToTransferGas(uint16 _dstChainId, uint256 _dstChainIdToTransferGas); event SetDstChainIdToBatchLimit(uint16 _dstChainId, uint256 _dstChainIdToBatchLimit); /** * @dev Emitted when `_payload` was received from lz, but not enough gas to deliver all tokenIds */ event CreditStored(bytes32 _hashedPayload, bytes _payload); /** * @dev Emitted when `_hashedPayload` has been completely delivered */ event CreditCleared(bytes32 _hashedPayload); /** * @dev send token `_tokenId` to (`_dstChainId`, `_toAddress`) from `_from` * `_toAddress` can be any size depending on the `dstChainId`. * `_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, bytes calldata _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; /** * @dev send tokens `_tokenIds[]` to (`_dstChainId`, `_toAddress`) from `_from` * `_toAddress` can be any size depending on the `dstChainId`. * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token) * `_adapterParams` is a flexible bytes array to indicate messaging adapter services */ function sendBatchFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint[] calldata _tokenIds, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable; /** * @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 * _tokenId - token Id to transfer * _useZro - indicates to use zro to pay L0 fees * _adapterParams - flexible bytes array to indicate messaging adapter services in L0 */ function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee); /** * @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 * _tokenIds[] - token Ids to transfer * _useZro - indicates to use zro to pay L0 fees * _adapterParams - flexible bytes array to indicate messaging adapter services in L0 */ function estimateSendBatchFee(uint16 _dstChainId, bytes calldata _toAddress, uint[] calldata _tokenIds, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "./IONFT721A.sol"; import "./ONFT721ACore.sol"; import "./ERC721ASpecific.sol"; import "operator-filter-registry/src/DefaultOperatorFilterer.sol"; contract ONFT721A is ONFT721ACore, ERC721ASpecific, IONFT721A, DefaultOperatorFilterer{ constructor(string memory _name, string memory _symbol, uint256 _minGasToTransfer, address _lzEndpoint, uint256 _startId) ERC721ASpecific(_name, _symbol, _startId) ONFT721ACore(_minGasToTransfer, _lzEndpoint) {} function supportsInterface(bytes4 interfaceId) public view virtual override(ONFT721ACore, ERC721ASpecific, IONFT721A) returns (bool) { return interfaceId == type(IONFT721A).interfaceId || super.supportsInterface(interfaceId); } function _debitFrom(address _from, uint16, bytes memory, uint _tokenId) internal virtual override { bridgeTransfer(_from, address(this), _tokenId); } function _creditTo(uint16, address _toAddress, uint _tokenId) internal virtual override { require(!_exists(_tokenId) || (_exists(_tokenId) && ERC721ASpecific.ownerOf(_tokenId) == address(this))); if (!_exists(_tokenId)) { bridgeMint(_toAddress, _tokenId); } else { bridgeTransfer(address(this), _toAddress, _tokenId); } } function setApprovalForAll(address operator, bool approved) public override(ERC721ASpecific, IERC721ASpecific) onlyAllowedOperatorApproval(operator) { super.setApprovalForAll(operator, approved); } function approve(address operator, uint256 tokenId) public payable override(ERC721ASpecific, IERC721ASpecific) onlyAllowedOperatorApproval(operator) { super.approve(operator, tokenId); } function transferFrom(address from, address to, uint256 tokenId) public payable override(ERC721ASpecific, IERC721ASpecific) onlyAllowedOperator(from) { super.transferFrom(from, to, tokenId); } function safeTransferFrom(address from, address to, uint256 tokenId) public payable override(ERC721ASpecific, IERC721ASpecific) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId); } function safeTransferFrom(address from, address to, uint256 tokenId, bytes memory data) public payable override(ERC721ASpecific, IERC721ASpecific) onlyAllowedOperator(from) { super.safeTransferFrom(from, to, tokenId, data); } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.0; import "@layerzerolabs/solidity-examples/contracts/lzApp/NonblockingLzApp.sol"; import "@openzeppelin/contracts/utils/introspection/ERC165.sol"; import "@openzeppelin/contracts/security/ReentrancyGuard.sol"; import "./IONFT721ACore.sol"; abstract contract ONFT721ACore is NonblockingLzApp, ERC165, ReentrancyGuard, IONFT721ACore { uint16 public constant FUNCTION_TYPE_SEND = 1; uint public bridgeFee; struct StoredCredit { uint16 srcChainId; address toAddress; uint256 index; // which index of the tokenIds remain bool creditsRemain; } uint256 public minGasToTransferAndStore; // min amount of gas required to transfer, and also store the payload mapping(uint16 => uint256) public dstChainIdToBatchLimit; mapping(uint16 => uint256) public dstChainIdToTransferGas; // per transfer amount of gas required to mint/transfer on the dst mapping(bytes32 => StoredCredit) public storedCredits; constructor(uint256 _minGasToTransferAndStore, address _lzEndpoint) NonblockingLzApp(_lzEndpoint) { require(_minGasToTransferAndStore > 0, "minGasToTransferAndStore must be > 0"); minGasToTransferAndStore = _minGasToTransferAndStore; } function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) { return interfaceId == type(IONFT721ACore).interfaceId || super.supportsInterface(interfaceId); } function estimateSendFee(uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, bool _useZro, bytes memory _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) { return estimateSendBatchFee(_dstChainId, _toAddress, _toSingletonArray(_tokenId), _useZro, _adapterParams); } function estimateSendBatchFee(uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, bool _useZro, bytes memory _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) { bytes memory payload = abi.encode(_toAddress, _tokenIds); return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams); } function sendFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) public payable virtual override { _send(_from, _dstChainId, _toAddress, _toSingletonArray(_tokenId), _refundAddress, _zroPaymentAddress, _adapterParams); } function sendBatchFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) public payable virtual override { _send(_from, _dstChainId, _toAddress, _tokenIds, _refundAddress, _zroPaymentAddress, _adapterParams); } function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual { // allow 1 by default require(_tokenIds.length > 0, "tokenIds[] is empty"); require(_tokenIds.length == 1 || _tokenIds.length <= dstChainIdToBatchLimit[_dstChainId], "batch size exceeds dst batch limit"); uint length = _tokenIds.length; for (uint i; i < length;) { _debitFrom(_from, _dstChainId, _toAddress, _tokenIds[i]); unchecked { i++; } } bytes memory payload = abi.encode(_toAddress, _tokenIds); _checkGasLimit(_dstChainId, FUNCTION_TYPE_SEND, _adapterParams, dstChainIdToTransferGas[_dstChainId] * _tokenIds.length); _lzSend(_dstChainId, payload, _refundAddress, _zroPaymentAddress, _adapterParams, msg.value - bridgeFee); emit SendToChain(_dstChainId, _from, _toAddress, _tokenIds); } function setBridgeFee(uint _bridgeFee) external onlyOwner { bridgeFee = _bridgeFee; } function _nonblockingLzReceive( uint16 _srcChainId, bytes memory _srcAddress, uint64, /*_nonce*/ bytes memory _payload ) internal virtual override { // decode and load the toAddress (bytes memory toAddressBytes, uint[] memory tokenIds) = abi.decode(_payload, (bytes, uint[])); address toAddress; assembly { toAddress := mload(add(toAddressBytes, 20)) } uint nextIndex = _creditTill(_srcChainId, toAddress, 0, tokenIds); if (nextIndex < tokenIds.length) { // not enough gas to complete transfers, store to be cleared in another tx bytes32 hashedPayload = keccak256(_payload); storedCredits[hashedPayload] = StoredCredit(_srcChainId, toAddress, nextIndex, true); emit CreditStored(hashedPayload, _payload); } emit ReceiveFromChain(_srcChainId, _srcAddress, toAddress, tokenIds); } // Public function for anyone to clear and deliver the remaining batch sent tokenIds function clearCredits(bytes memory _payload) external virtual nonReentrant { bytes32 hashedPayload = keccak256(_payload); require(storedCredits[hashedPayload].creditsRemain, "no credits stored"); (, uint[] memory tokenIds) = abi.decode(_payload, (bytes, uint[])); uint nextIndex = _creditTill(storedCredits[hashedPayload].srcChainId, storedCredits[hashedPayload].toAddress, storedCredits[hashedPayload].index, tokenIds); require(nextIndex > storedCredits[hashedPayload].index, "not enough gas to process credit transfer"); if (nextIndex == tokenIds.length) { // cleared the credits, delete the element delete storedCredits[hashedPayload]; emit CreditCleared(hashedPayload); } else { // store the next index to mint storedCredits[hashedPayload] = StoredCredit(storedCredits[hashedPayload].srcChainId, storedCredits[hashedPayload].toAddress, nextIndex, true); } } // When a srcChain has the ability to transfer more chainIds in a single tx than the dst can do. // Needs the ability to iterate and stop if the minGasToTransferAndStore is not met function _creditTill(uint16 _srcChainId, address _toAddress, uint _startIndex, uint[] memory _tokenIds) internal returns (uint256){ uint i = _startIndex; while (i < _tokenIds.length) { // if not enough gas to process, store this index for next loop if (gasleft() < minGasToTransferAndStore) break; _creditTo(_srcChainId, _toAddress, _tokenIds[i]); i++; } // indicates the next index to send of tokenIds, // if i == tokenIds.length, we are finished return i; } function setMinGasToTransferAndStore(uint256 _minGasToTransferAndStore) external onlyOwner { require(_minGasToTransferAndStore > 0, "minGasToTransferAndStore must be > 0"); minGasToTransferAndStore = _minGasToTransferAndStore; emit SetMinGasToTransferAndStore(_minGasToTransferAndStore); } // ensures enough gas in adapter params to handle batch transfer gas amounts on the dst function setDstChainIdToTransferGas(uint16 _dstChainId, uint256 _dstChainIdToTransferGas) external onlyOwner { require(_dstChainIdToTransferGas > 0, "dstChainIdToTransferGas must be > 0"); dstChainIdToTransferGas[_dstChainId] = _dstChainIdToTransferGas; emit SetDstChainIdToTransferGas(_dstChainId, _dstChainIdToTransferGas); } // limit on src the amount of tokens to batch send function setDstChainIdToBatchLimit(uint16 _dstChainId, uint256 _dstChainIdToBatchLimit) external onlyOwner { require(_dstChainIdToBatchLimit > 0, "dstChainIdToBatchLimit must be > 0"); dstChainIdToBatchLimit[_dstChainId] = _dstChainIdToBatchLimit; emit SetDstChainIdToBatchLimit(_dstChainId, _dstChainIdToBatchLimit); } function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId) internal virtual; function _creditTo(uint16 _srcChainId, address _toAddress, uint _tokenId) internal virtual; function _toSingletonArray(uint element) internal pure returns (uint[] memory) { uint[] memory array = new uint[](1); array[0] = element; return array; } }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {OperatorFilterer} from "./OperatorFilterer.sol"; import {CANONICAL_CORI_SUBSCRIPTION} from "./lib/Constants.sol"; /** * @title DefaultOperatorFilterer * @notice Inherits from OperatorFilterer and automatically subscribes to the default OpenSea subscription. * @dev Please note that if your token contract does not provide an owner with EIP-173, it must provide * administration methods on the contract itself to interact with the registry otherwise the subscription * will be locked to the options set during construction. */ abstract contract DefaultOperatorFilterer is OperatorFilterer { /// @dev The constructor that is called when the contract is being deployed. constructor() OperatorFilterer(CANONICAL_CORI_SUBSCRIPTION, true) {} }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; interface IOperatorFilterRegistry { /** * @notice Returns true if operator is not filtered for a given token, either by address or codeHash. Also returns * true if supplied registrant address is not registered. */ function isOperatorAllowed(address registrant, address operator) external view returns (bool); /** * @notice Registers an address with the registry. May be called by address itself or by EIP-173 owner. */ function register(address registrant) external; /** * @notice Registers an address with the registry and "subscribes" to another address's filtered operators and codeHashes. */ function registerAndSubscribe(address registrant, address subscription) external; /** * @notice Registers an address with the registry and copies the filtered operators and codeHashes from another * address without subscribing. */ function registerAndCopyEntries(address registrant, address registrantToCopy) external; /** * @notice Unregisters an address with the registry and removes its subscription. May be called by address itself or by EIP-173 owner. * Note that this does not remove any filtered addresses or codeHashes. * Also note that any subscriptions to this registrant will still be active and follow the existing filtered addresses and codehashes. */ function unregister(address addr) external; /** * @notice Update an operator address for a registered address - when filtered is true, the operator is filtered. */ function updateOperator(address registrant, address operator, bool filtered) external; /** * @notice Update multiple operators for a registered address - when filtered is true, the operators will be filtered. Reverts on duplicates. */ function updateOperators(address registrant, address[] calldata operators, bool filtered) external; /** * @notice Update a codeHash for a registered address - when filtered is true, the codeHash is filtered. */ function updateCodeHash(address registrant, bytes32 codehash, bool filtered) external; /** * @notice Update multiple codeHashes for a registered address - when filtered is true, the codeHashes will be filtered. Reverts on duplicates. */ function updateCodeHashes(address registrant, bytes32[] calldata codeHashes, bool filtered) external; /** * @notice Subscribe an address to another registrant's filtered operators and codeHashes. Will remove previous * subscription if present. * Note that accounts with subscriptions may go on to subscribe to other accounts - in this case, * subscriptions will not be forwarded. Instead the former subscription's existing entries will still be * used. */ function subscribe(address registrant, address registrantToSubscribe) external; /** * @notice Unsubscribe an address from its current subscribed registrant, and optionally copy its filtered operators and codeHashes. */ function unsubscribe(address registrant, bool copyExistingEntries) external; /** * @notice Get the subscription address of a given registrant, if any. */ function subscriptionOf(address addr) external returns (address registrant); /** * @notice Get the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscribers(address registrant) external returns (address[] memory); /** * @notice Get the subscriber at a given index in the set of addresses subscribed to a given registrant. * Note that order is not guaranteed as updates are made. */ function subscriberAt(address registrant, uint256 index) external returns (address); /** * @notice Copy filtered operators and codeHashes from a different registrantToCopy to addr. */ function copyEntriesOf(address registrant, address registrantToCopy) external; /** * @notice Returns true if operator is filtered by a given address or its subscription. */ function isOperatorFiltered(address registrant, address operator) external returns (bool); /** * @notice Returns true if the hash of an address's code is filtered by a given address or its subscription. */ function isCodeHashOfFiltered(address registrant, address operatorWithCode) external returns (bool); /** * @notice Returns true if a codeHash is filtered by a given address or its subscription. */ function isCodeHashFiltered(address registrant, bytes32 codeHash) external returns (bool); /** * @notice Returns a list of filtered operators for a given address or its subscription. */ function filteredOperators(address addr) external returns (address[] memory); /** * @notice Returns the set of filtered codeHashes for a given address or its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashes(address addr) external returns (bytes32[] memory); /** * @notice Returns the filtered operator at the given index of the set of filtered operators for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredOperatorAt(address registrant, uint256 index) external returns (address); /** * @notice Returns the filtered codeHash at the given index of the list of filtered codeHashes for a given address or * its subscription. * Note that order is not guaranteed as updates are made. */ function filteredCodeHashAt(address registrant, uint256 index) external returns (bytes32); /** * @notice Returns true if an address has registered */ function isRegistered(address addr) external returns (bool); /** * @dev Convenience method to compute the code hash of an arbitrary contract */ function codeHashOf(address addr) external returns (bytes32); }
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; address constant CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS = 0x000000000000AAeB6D7670E522A718067333cd4E; address constant CANONICAL_CORI_SUBSCRIPTION = 0x3cc6CddA760b79bAfa08dF41ECFA224f810dCeB6;
// SPDX-License-Identifier: MIT pragma solidity ^0.8.13; import {IOperatorFilterRegistry} from "./IOperatorFilterRegistry.sol"; import {CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS} from "./lib/Constants.sol"; /** * @title OperatorFilterer * @notice Abstract contract whose constructor automatically registers and optionally subscribes to or copies another * registrant's entries in the OperatorFilterRegistry. * @dev This smart contract is meant to be inherited by token contracts so they can use the following: * - `onlyAllowedOperator` modifier for `transferFrom` and `safeTransferFrom` methods. * - `onlyAllowedOperatorApproval` modifier for `approve` and `setApprovalForAll` methods. * Please note that if your token contract does not provide an owner with EIP-173, it must provide * administration methods on the contract itself to interact with the registry otherwise the subscription * will be locked to the options set during construction. */ abstract contract OperatorFilterer { /// @dev Emitted when an operator is not allowed. error OperatorNotAllowed(address operator); IOperatorFilterRegistry public constant OPERATOR_FILTER_REGISTRY = IOperatorFilterRegistry(CANONICAL_OPERATOR_FILTER_REGISTRY_ADDRESS); /// @dev The constructor that is called when the contract is being deployed. constructor(address subscriptionOrRegistrantToCopy, bool subscribe) { // If an inheriting token contract is deployed to a network without the registry deployed, the modifier // will not revert, but the contract will need to be registered with the registry once it is deployed in // order for the modifier to filter addresses. if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) { if (subscribe) { OPERATOR_FILTER_REGISTRY.registerAndSubscribe(address(this), subscriptionOrRegistrantToCopy); } else { if (subscriptionOrRegistrantToCopy != address(0)) { OPERATOR_FILTER_REGISTRY.registerAndCopyEntries(address(this), subscriptionOrRegistrantToCopy); } else { OPERATOR_FILTER_REGISTRY.register(address(this)); } } } } /** * @dev A helper function to check if an operator is allowed. */ modifier onlyAllowedOperator(address from) virtual { // Allow spending tokens from addresses with balance // Note that this still allows listings and marketplaces with escrow to transfer tokens if transferred // from an EOA. if (from != msg.sender) { _checkFilterOperator(msg.sender); } _; } /** * @dev A helper function to check if an operator approval is allowed. */ modifier onlyAllowedOperatorApproval(address operator) virtual { _checkFilterOperator(operator); _; } /** * @dev A helper function to check if an operator is allowed. */ function _checkFilterOperator(address operator) internal view virtual { // Check registry code length to facilitate testing in environments without a deployed registry. if (address(OPERATOR_FILTER_REGISTRY).code.length > 0) { // under normal circumstances, this function will revert rather than return false, but inheriting contracts // may specify their own OperatorFilterRegistry implementations, which may behave differently if (!OPERATOR_FILTER_REGISTRY.isOperatorAllowed(address(this), operator)) { revert OperatorNotAllowed(operator); } } } }
{ "viaIR": true, "optimizer": { "enabled": true, "runs": 5 }, "outputSelection": { "*": { "*": [ "evm.bytecode", "evm.deployedBytecode", "devdoc", "userdoc", "metadata", "abi" ] } }, "metadata": { "useLiteralContent": true }, "remappings": [], "libraries": {} }
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Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
000000000000000000000000000000000000000000000000000000000000016000000000000000000000000000000000000000000000000000000000000001a00000000000000000000000003c2269811836af69497e5f486a85d7316753cf6200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000989680000000000000000000000000000000000000000000000000000000000098968000000000000000000000000000000000000000000000000000000000000001e00000000000000000000000000000000000000000000000000000000000000200000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000008636fa411113d1b40b5d76f6766d16b3aa829d3000000000000000000000000000000000000000000000000000000000000000124f6d6e6920417820416476656e7475726573000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000044f4158410000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000
-----Decoded View---------------
Arg [0] : _name (string): Omni Ax Adventures
Arg [1] : _symbol (string): OAXA
Arg [2] : _lzEndpoint (address): 0x3c2269811836af69497E5F486A85D7316753cf62
Arg [3] : _startId (uint256): 0
Arg [4] : _maxId (uint256): 10000000
Arg [5] : _maxGlobalId (uint256): 10000000
Arg [6] : _baseTokenURI (string):
Arg [7] : _hiddenURI (string):
Arg [8] : _tax (uint16): 0
Arg [9] : _price (uint256): 0
Arg [10] : _taxRecipient (address): 0x8636FA411113D1b40B5D76F6766D16b3aA829D30
-----Encoded View---------------
17 Constructor Arguments found :
Arg [0] : 0000000000000000000000000000000000000000000000000000000000000160
Arg [1] : 00000000000000000000000000000000000000000000000000000000000001a0
Arg [2] : 0000000000000000000000003c2269811836af69497e5f486a85d7316753cf62
Arg [3] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [4] : 0000000000000000000000000000000000000000000000000000000000989680
Arg [5] : 0000000000000000000000000000000000000000000000000000000000989680
Arg [6] : 00000000000000000000000000000000000000000000000000000000000001e0
Arg [7] : 0000000000000000000000000000000000000000000000000000000000000200
Arg [8] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [9] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [10] : 0000000000000000000000008636fa411113d1b40b5d76f6766d16b3aa829d30
Arg [11] : 0000000000000000000000000000000000000000000000000000000000000012
Arg [12] : 4f6d6e6920417820416476656e74757265730000000000000000000000000000
Arg [13] : 0000000000000000000000000000000000000000000000000000000000000004
Arg [14] : 4f41584100000000000000000000000000000000000000000000000000000000
Arg [15] : 0000000000000000000000000000000000000000000000000000000000000000
Arg [16] : 0000000000000000000000000000000000000000000000000000000000000000
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A token is a representation of an on-chain or off-chain asset. The token page shows information such as price, total supply, holders, transfers and social links. Learn more about this page in our Knowledge Base.