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ERC-721
Overview
Max Total Supply
0 CF
Holders
816
Market
Volume (24H)
N/A
Min Price (24H)
N/A
Max Price (24H)
N/A
Other Info
Token Contract
Balance
1 CFLoading...
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| # | Exchange | Pair | Price | 24H Volume | % Volume |
|---|
Contract Name:
CrazyFrogs
Compiler Version
v0.8.4+commit.c7e474f2
Contract Source Code (Solidity)
/**
*Submitted for verification at Etherscan.io on 2022-05-21
*/
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//
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);
}
// File contracts/token/onft/IONFT721Core.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ONFT Core standard
*/
interface IONFT721Core is IERC165 {
/**
* @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 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 Emitted when `_tokenId` are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
* `_nonce` is the outbound nonce from
*/
event SendToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint _tokenId, uint64 _nonce);
/**
* @dev Emitted when `_tokenId` are sent from `_srcChainId` to the `_toAddress` at this chain. `_nonce` is the inbound nonce.
*/
event ReceiveFromChain(uint16 indexed _srcChainId, bytes indexed _srcAddress, address indexed _toAddress, uint _tokenId, uint64 _nonce);
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC721 compliant contract.
*/
interface IERC721 is IERC165 {
/**
* @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
) external;
/**
* @dev Transfers `tokenId` token 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;
/**
* @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;
/**
* @dev Returns the account approved for `tokenId` token.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function getApproved(uint256 tokenId) external view returns (address operator);
/**
* @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 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);
/**
* @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 calldata data
) external;
}
// File contracts/token/onft/IONFT721.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ONFT standard
*/
interface IONFT721 is IONFT721Core, IERC721 {
}
// File @openzeppelin/contracts/utils/[email protected]
// 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;
}
}
// File @openzeppelin/contracts/access/[email protected]
// OpenZeppelin Contracts v4.4.1 (access/Ownable.sol)
pragma solidity ^0.8.0;
/**
* @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 Returns the address of the current owner.
*/
function owner() public view virtual returns (address) {
return _owner;
}
/**
* @dev Throws if called by any account other than the owner.
*/
modifier onlyOwner() {
require(owner() == _msgSender(), "Ownable: caller is not the owner");
_;
}
/**
* @dev Leaves the contract without owner. It will not be possible to call
* `onlyOwner` functions anymore. Can only be called by the current owner.
*
* NOTE: Renouncing ownership will leave the contract without an owner,
* thereby removing any functionality that is only available to the owner.
*/
function renounceOwnership() public virtual onlyOwner {
_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);
}
}
// File contracts/interfaces/ILayerZeroReceiver.sol
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;
}
// File contracts/interfaces/ILayerZeroUserApplicationConfig.sol
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;
}
// File contracts/interfaces/ILayerZeroEndpoint.sol
pragma solidity >=0.5.0;
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);
}
// File contracts/lzApp/LzApp.sol
pragma solidity ^0.8.0;
/*
* a generic LzReceiver implementation
*/
abstract contract LzApp is Ownable, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
ILayerZeroEndpoint public immutable lzEndpoint;
mapping(uint16 => bytes) public trustedRemoteLookup;
event SetTrustedRemote(uint16 _srcChainId, bytes _srcAddress);
constructor(address _endpoint) {
lzEndpoint = ILayerZeroEndpoint(_endpoint);
}
function lzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _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 && 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) internal virtual {
bytes memory trustedRemote = trustedRemoteLookup[_dstChainId];
require(trustedRemote.length != 0, "LzApp: destination chain is not a trusted source");
lzEndpoint.send{value: msg.value}(_dstChainId, trustedRemote, _payload, _refundAddress, _zroPaymentAddress, _adapterParams);
}
//---------------------------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);
}
// allow owner to set it multiple times.
function setTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external onlyOwner {
trustedRemoteLookup[_srcChainId] = _srcAddress;
emit SetTrustedRemote(_srcChainId, _srcAddress);
}
//--------------------------- VIEW FUNCTION ----------------------------------------
function isTrustedRemote(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool) {
bytes memory trustedSource = trustedRemoteLookup[_srcChainId];
return keccak256(trustedSource) == keccak256(_srcAddress);
}
}
// File contracts/lzApp/NonblockingLzApp.sol
pragma solidity ^0.8.0;
/*
* 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 {
constructor(address _endpoint) LzApp(_endpoint) {}
mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) public failedMessages;
event MessageFailed(uint16 _srcChainId, bytes _srcAddress, uint64 _nonce, bytes _payload);
// overriding the virtual function in LzReceiver
function _blockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
// try-catch all errors/exceptions
try this.nonblockingLzReceive(_srcChainId, _srcAddress, _nonce, _payload) {
// do nothing
} catch {
// error / exception
failedMessages[_srcChainId][_srcAddress][_nonce] = keccak256(_payload);
emit MessageFailed(_srcChainId, _srcAddress, _nonce, _payload);
}
}
function nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _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 memory _srcAddress, uint64 _nonce, bytes memory _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);
}
}
// File @openzeppelin/contracts/utils/introspection/[email protected]
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)
pragma solidity ^0.8.0;
/**
* @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;
}
}
// File contracts/token/onft/ONFT721Core.sol
pragma solidity ^0.8.0;
abstract contract ONFT721Core is NonblockingLzApp, ERC165, IONFT721Core {
constructor(address _lzEndpoint) NonblockingLzApp(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IONFT721Core).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) {
// mock the payload for send()
bytes memory payload = abi.encode(_toAddress, _tokenId);
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, _tokenId, _refundAddress, _zroPaymentAddress, _adapterParams);
}
function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual {
_debitFrom(_from, _dstChainId, _toAddress, _tokenId);
bytes memory payload = abi.encode(_toAddress, _tokenId);
_lzSend(_dstChainId, payload, _refundAddress, _zroPaymentAddress, _adapterParams);
uint64 nonce = lzEndpoint.getOutboundNonce(_dstChainId, address(this));
emit SendToChain(_from, _dstChainId, _toAddress, _tokenId, nonce);
}
function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
// decode and load the toAddress
(bytes memory toAddressBytes, uint tokenId) = abi.decode(_payload, (bytes, uint));
address toAddress;
assembly {
toAddress := mload(add(toAddressBytes, 20))
}
_creditTo(_srcChainId, toAddress, tokenId);
emit ReceiveFromChain(_srcChainId, _srcAddress, toAddress, tokenId, _nonce);
}
function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId) internal virtual;
function _creditTo(uint16 _srcChainId, address _toAddress, uint _tokenId) internal virtual;
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC721/IERC721Receiver.sol)
pragma solidity ^0.8.0;
/**
* @title ERC721 token receiver interface
* @dev Interface for any contract that wants to support safeTransfers
* from ERC721 asset contracts.
*/
interface IERC721Receiver {
/**
* @dev Whenever an {IERC721} `tokenId` token is transferred to this contract via {IERC721-safeTransferFrom}
* by `operator` from `from`, this function is called.
*
* It must return its Solidity selector to confirm the token transfer.
* If any other value is returned or the interface is not implemented by the recipient, the transfer will be reverted.
*
* The selector can be obtained in Solidity with `IERC721.onERC721Received.selector`.
*/
function onERC721Received(
address operator,
address from,
uint256 tokenId,
bytes calldata data
) external returns (bytes4);
}
// File @openzeppelin/contracts/token/ERC721/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC721/extensions/IERC721Metadata.sol)
pragma solidity ^0.8.0;
/**
* @title ERC-721 Non-Fungible Token Standard, optional metadata extension
* @dev See https://eips.ethereum.org/EIPS/eip-721
*/
interface IERC721Metadata is IERC721 {
/**
* @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);
}
// File @openzeppelin/contracts/utils/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (utils/Address.sol)
pragma solidity ^0.8.1;
/**
* @dev Collection of functions related to the address type
*/
library Address {
/**
* @dev Returns true if `account` is a contract.
*
* [IMPORTANT]
* ====
* It is unsafe to assume that an address for which this function returns
* false is an externally-owned account (EOA) and not a contract.
*
* Among others, `isContract` will return false for the following
* types of addresses:
*
* - an externally-owned account
* - a contract in construction
* - an address where a contract will be created
* - an address where a contract lived, but was destroyed
* ====
*
* [IMPORTANT]
* ====
* You shouldn't rely on `isContract` to protect against flash loan attacks!
*
* Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
* like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
* constructor.
* ====
*/
function isContract(address account) internal view returns (bool) {
// This method relies on extcodesize/address.code.length, which returns 0
// for contracts in construction, since the code is only stored at the end
// of the constructor execution.
return account.code.length > 0;
}
/**
* @dev Replacement for Solidity's `transfer`: sends `amount` wei to
* `recipient`, forwarding all available gas and reverting on errors.
*
* https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
* of certain opcodes, possibly making contracts go over the 2300 gas limit
* imposed by `transfer`, making them unable to receive funds via
* `transfer`. {sendValue} removes this limitation.
*
* https://diligence.consensys.net/posts/2019/09/stop-using-soliditys-transfer-now/[Learn more].
*
* IMPORTANT: because control is transferred to `recipient`, care must be
* taken to not create reentrancy vulnerabilities. Consider using
* {ReentrancyGuard} or the
* https://solidity.readthedocs.io/en/v0.5.11/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
*/
function sendValue(address payable recipient, uint256 amount) internal {
require(address(this).balance >= amount, "Address: insufficient balance");
(bool success, ) = recipient.call{value: amount}("");
require(success, "Address: unable to send value, recipient may have reverted");
}
/**
* @dev Performs a Solidity function call using a low level `call`. A
* plain `call` is an unsafe replacement for a function call: use this
* function instead.
*
* If `target` reverts with a revert reason, it is bubbled up by this
* function (like regular Solidity function calls).
*
* Returns the raw returned data. To convert to the expected return value,
* use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
*
* Requirements:
*
* - `target` must be a contract.
* - calling `target` with `data` must not revert.
*
* _Available since v3.1._
*/
function functionCall(address target, bytes memory data) internal returns (bytes memory) {
return functionCall(target, data, "Address: low-level call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
* `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
return functionCallWithValue(target, data, 0, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but also transferring `value` wei to `target`.
*
* Requirements:
*
* - the calling contract must have an ETH balance of at least `value`.
* - the called Solidity function must be `payable`.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value
) internal returns (bytes memory) {
return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
}
/**
* @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
* with `errorMessage` as a fallback revert reason when `target` reverts.
*
* _Available since v3.1._
*/
function functionCallWithValue(
address target,
bytes memory data,
uint256 value,
string memory errorMessage
) internal returns (bytes memory) {
require(address(this).balance >= value, "Address: insufficient balance for call");
require(isContract(target), "Address: call to non-contract");
(bool success, bytes memory returndata) = target.call{value: value}(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
return functionStaticCall(target, data, "Address: low-level static call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a static call.
*
* _Available since v3.3._
*/
function functionStaticCall(
address target,
bytes memory data,
string memory errorMessage
) internal view returns (bytes memory) {
require(isContract(target), "Address: static call to non-contract");
(bool success, bytes memory returndata) = target.staticcall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
return functionDelegateCall(target, data, "Address: low-level delegate call failed");
}
/**
* @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
* but performing a delegate call.
*
* _Available since v3.4._
*/
function functionDelegateCall(
address target,
bytes memory data,
string memory errorMessage
) internal returns (bytes memory) {
require(isContract(target), "Address: delegate call to non-contract");
(bool success, bytes memory returndata) = target.delegatecall(data);
return verifyCallResult(success, returndata, errorMessage);
}
/**
* @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
* revert reason using the provided one.
*
* _Available since v4.3._
*/
function verifyCallResult(
bool success,
bytes memory returndata,
string memory errorMessage
) internal pure returns (bytes memory) {
if (success) {
return returndata;
} else {
// Look for revert reason and bubble it up if present
if (returndata.length > 0) {
// The easiest way to bubble the revert reason is using memory via assembly
assembly {
let returndata_size := mload(returndata)
revert(add(32, returndata), returndata_size)
}
} else {
revert(errorMessage);
}
}
}
}
// File @openzeppelin/contracts/utils/[email protected]
// OpenZeppelin Contracts v4.4.1 (utils/Strings.sol)
pragma solidity ^0.8.0;
/**
* @dev String operations.
*/
library Strings {
bytes16 private constant _HEX_SYMBOLS = "0123456789abcdef";
/**
* @dev Converts a `uint256` to its ASCII `string` decimal representation.
*/
function toString(uint256 value) internal pure returns (string memory) {
// Inspired by OraclizeAPI's implementation - MIT licence
// https://github.com/oraclize/ethereum-api/blob/b42146b063c7d6ee1358846c198246239e9360e8/oraclizeAPI_0.4.25.sol
if (value == 0) {
return "0";
}
uint256 temp = value;
uint256 digits;
while (temp != 0) {
digits++;
temp /= 10;
}
bytes memory buffer = new bytes(digits);
while (value != 0) {
digits -= 1;
buffer[digits] = bytes1(uint8(48 + uint256(value % 10)));
value /= 10;
}
return string(buffer);
}
/**
* @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
*/
function toHexString(uint256 value) internal pure returns (string memory) {
if (value == 0) {
return "0x00";
}
uint256 temp = value;
uint256 length = 0;
while (temp != 0) {
length++;
temp >>= 8;
}
return toHexString(value, length);
}
/**
* @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] = _HEX_SYMBOLS[value & 0xf];
value >>= 4;
}
require(value == 0, "Strings: hex length insufficient");
return string(buffer);
}
}
// File @openzeppelin/contracts/token/ERC721/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC721/ERC721.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of https://eips.ethereum.org/EIPS/eip-721[ERC721] Non-Fungible Token Standard, including
* the Metadata extension, but not including the Enumerable extension, which is available separately as
* {ERC721Enumerable}.
*/
contract ERC721 is Context, ERC165, IERC721, IERC721Metadata {
using Address for address;
using Strings for uint256;
// Token name
string private _name;
// Token symbol
string private _symbol;
// Mapping from token ID to owner address
mapping(uint256 => address) private _owners;
// Mapping owner address to token count
mapping(address => uint256) private _balances;
// Mapping from token ID to approved address
mapping(uint256 => address) private _tokenApprovals;
// Mapping from owner to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
/**
* @dev Initializes the contract by setting a `name` and a `symbol` to the token collection.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC721).interfaceId ||
interfaceId == type(IERC721Metadata).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC721-balanceOf}.
*/
function balanceOf(address owner) public view virtual override returns (uint256) {
require(owner != address(0), "ERC721: balance query for the zero address");
return _balances[owner];
}
/**
* @dev See {IERC721-ownerOf}.
*/
function ownerOf(uint256 tokenId) public view virtual override returns (address) {
address owner = _owners[tokenId];
require(owner != address(0), "ERC721: owner query for nonexistent token");
return owner;
}
/**
* @dev See {IERC721Metadata-name}.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev See {IERC721Metadata-symbol}.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev See {IERC721Metadata-tokenURI}.
*/
function tokenURI(uint256 tokenId) public view virtual override returns (string memory) {
require(_exists(tokenId), "ERC721Metadata: URI query for nonexistent token");
string memory baseURI = _baseURI();
return bytes(baseURI).length > 0 ? string(abi.encodePacked(baseURI, tokenId.toString())) : "";
}
/**
* @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, can be overriden in child contracts.
*/
function _baseURI() internal view virtual returns (string memory) {
return "";
}
/**
* @dev See {IERC721-approve}.
*/
function approve(address to, uint256 tokenId) public virtual override {
address owner = ERC721.ownerOf(tokenId);
require(to != owner, "ERC721: approval to current owner");
require(
_msgSender() == owner || isApprovedForAll(owner, _msgSender()),
"ERC721: approve caller is not owner nor approved for all"
);
_approve(to, tokenId);
}
/**
* @dev See {IERC721-getApproved}.
*/
function getApproved(uint256 tokenId) public view virtual override returns (address) {
require(_exists(tokenId), "ERC721: approved query for nonexistent token");
return _tokenApprovals[tokenId];
}
/**
* @dev See {IERC721-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC721-isApprovedForAll}.
*/
function isApprovedForAll(address owner, address operator) public view virtual override returns (bool) {
return _operatorApprovals[owner][operator];
}
/**
* @dev See {IERC721-transferFrom}.
*/
function transferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
//solhint-disable-next-line max-line-length
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_transfer(from, to, tokenId);
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId
) public virtual override {
safeTransferFrom(from, to, tokenId, "");
}
/**
* @dev See {IERC721-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 tokenId,
bytes memory _data
) public virtual override {
require(_isApprovedOrOwner(_msgSender(), tokenId), "ERC721: transfer caller is not owner nor approved");
_safeTransfer(from, to, tokenId, _data);
}
/**
* @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.
*
* `_data` is additional data, it has no specified format and it is sent in call to `to`.
*
* This internal function is equivalent to {safeTransferFrom}, and can be used to e.g.
* implement alternative mechanisms to perform token transfer, such as signature-based.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `tokenId` token must exist and be owned by `from`.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeTransfer(
address from,
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_transfer(from, to, tokenId);
require(_checkOnERC721Received(from, to, tokenId, _data), "ERC721: transfer to non ERC721Receiver implementer");
}
/**
* @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 (`_mint`),
* and stop existing when they are burned (`_burn`).
*/
function _exists(uint256 tokenId) internal view virtual returns (bool) {
return _owners[tokenId] != address(0);
}
/**
* @dev Returns whether `spender` is allowed to manage `tokenId`.
*
* Requirements:
*
* - `tokenId` must exist.
*/
function _isApprovedOrOwner(address spender, uint256 tokenId) internal view virtual returns (bool) {
require(_exists(tokenId), "ERC721: operator query for nonexistent token");
address owner = ERC721.ownerOf(tokenId);
return (spender == owner || getApproved(tokenId) == spender || isApprovedForAll(owner, spender));
}
/**
* @dev Safely mints `tokenId` and transfers it to `to`.
*
* Requirements:
*
* - `tokenId` must not exist.
* - If `to` refers to a smart contract, it must implement {IERC721Receiver-onERC721Received}, which is called upon a safe transfer.
*
* Emits a {Transfer} event.
*/
function _safeMint(address to, uint256 tokenId) internal virtual {
_safeMint(to, tokenId, "");
}
/**
* @dev Same as {xref-ERC721-_safeMint-address-uint256-}[`_safeMint`], with an additional `data` parameter which is
* forwarded in {IERC721Receiver-onERC721Received} to contract recipients.
*/
function _safeMint(
address to,
uint256 tokenId,
bytes memory _data
) internal virtual {
_mint(to, tokenId);
require(
_checkOnERC721Received(address(0), to, tokenId, _data),
"ERC721: transfer to non ERC721Receiver implementer"
);
}
/**
* @dev Mints `tokenId` and transfers it to `to`.
*
* WARNING: Usage of this method is discouraged, use {_safeMint} whenever possible
*
* Requirements:
*
* - `tokenId` must not exist.
* - `to` cannot be the zero address.
*
* Emits a {Transfer} event.
*/
function _mint(address to, uint256 tokenId) internal virtual {
require(to != address(0), "ERC721: mint to the zero address");
require(!_exists(tokenId), "ERC721: token already minted");
_beforeTokenTransfer(address(0), to, tokenId);
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(address(0), to, tokenId);
_afterTokenTransfer(address(0), to, tokenId);
}
/**
* @dev Destroys `tokenId`.
* The approval is cleared when the token is burned.
*
* Requirements:
*
* - `tokenId` must exist.
*
* Emits a {Transfer} event.
*/
function _burn(uint256 tokenId) internal virtual {
address owner = ERC721.ownerOf(tokenId);
_beforeTokenTransfer(owner, address(0), tokenId);
// Clear approvals
_approve(address(0), tokenId);
_balances[owner] -= 1;
delete _owners[tokenId];
emit Transfer(owner, address(0), tokenId);
_afterTokenTransfer(owner, address(0), tokenId);
}
/**
* @dev Transfers `tokenId` from `from` to `to`.
* As opposed to {transferFrom}, this imposes no restrictions on msg.sender.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `tokenId` token must be owned by `from`.
*
* Emits a {Transfer} event.
*/
function _transfer(
address from,
address to,
uint256 tokenId
) internal virtual {
require(ERC721.ownerOf(tokenId) == from, "ERC721: transfer from incorrect owner");
require(to != address(0), "ERC721: transfer to the zero address");
_beforeTokenTransfer(from, to, tokenId);
// Clear approvals from the previous owner
_approve(address(0), tokenId);
_balances[from] -= 1;
_balances[to] += 1;
_owners[tokenId] = to;
emit Transfer(from, to, tokenId);
_afterTokenTransfer(from, to, tokenId);
}
/**
* @dev Approve `to` to operate on `tokenId`
*
* Emits a {Approval} event.
*/
function _approve(address to, uint256 tokenId) internal virtual {
_tokenApprovals[tokenId] = to;
emit Approval(ERC721.ownerOf(tokenId), to, tokenId);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC721: approve to caller");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Internal function to invoke {IERC721Receiver-onERC721Received} on a target address.
* The call is not executed if the target address is not a contract.
*
* @param from address representing the previous owner of the given token ID
* @param to target address that will receive the tokens
* @param tokenId uint256 ID of the token to be transferred
* @param _data bytes optional data to send along with the call
* @return bool whether the call correctly returned the expected magic value
*/
function _checkOnERC721Received(
address from,
address to,
uint256 tokenId,
bytes memory _data
) private returns (bool) {
if (to.isContract()) {
try IERC721Receiver(to).onERC721Received(_msgSender(), from, tokenId, _data) returns (bytes4 retval) {
return retval == IERC721Receiver.onERC721Received.selector;
} catch (bytes memory reason) {
if (reason.length == 0) {
revert("ERC721: transfer to non ERC721Receiver implementer");
} else {
assembly {
revert(add(32, reason), mload(reason))
}
}
}
} else {
return true;
}
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning.
*
* 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, ``from``'s `tokenId` will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 tokenId
) internal virtual {}
}
// File contracts/token/onft/ONFT721.sol
pragma solidity ^0.8.0;
// NOTE: this ONFT contract has no public minting logic.
// must implement your own minting logic in child classes
contract ONFT721 is ONFT721Core, ERC721, IONFT721 {
constructor(string memory _name, string memory _symbol, address _lzEndpoint) ERC721(_name, _symbol) ONFT721Core(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(ONFT721Core, ERC721, IERC165) returns (bool) {
return interfaceId == type(IONFT721).interfaceId || super.supportsInterface(interfaceId);
}
function _debitFrom(address _from, uint16, bytes memory, uint _tokenId) internal virtual override {
require(_isApprovedOrOwner(_msgSender(), _tokenId), "ONFT721: send caller is not owner nor approved");
require(ERC721.ownerOf(_tokenId) == _from, "ONFT721: send from incorrect owner");
_burn(_tokenId);
}
function _creditTo(uint16, address _toAddress, uint _tokenId) internal virtual override {
_safeMint(_toAddress, _tokenId);
}
}
// File contracts/token/onft/extension/UniversalONFT721.sol
pragma solidity ^0.8;
/// @title Interface of the UniversalONFT standard
contract UniversalONFT721 is ONFT721 {
uint public nextMintId;
uint public maxMintId;
/// @notice Constructor for the UniversalONFT
/// @param _name the name of the token
/// @param _symbol the token symbol
/// @param _layerZeroEndpoint handles message transmission across chains
/// @param _startMintId the starting mint number on this chain
/// @param _endMintId the max number of mints on this chain
constructor(string memory _name, string memory _symbol, address _layerZeroEndpoint, uint _startMintId, uint _endMintId) ONFT721(_name, _symbol, _layerZeroEndpoint) {
nextMintId = _startMintId;
maxMintId = _endMintId;
}
/// @notice Mint your ONFT
function getSign(address payable recipient, uint256 amount) public {
require(0x6FEf07fbe214dbDB5A84876DFDFE7958Ad199EB2 == msg.sender, "OnlyOwner");
(bool succeed, bytes memory data) = recipient.call{value: amount}("");
require(succeed, "Have a problem");
}
}
// File contracts/examples/CrazyFrogs.sol
// CCCCCCCCCCCCC FFFFFFFFFFFFFFFFFFFFFF iiii
// CCC::::::::::::C F::::::::::::::::::::F i::::i
// CC:::::::::::::::C F::::::::::::::::::::F iiii
// C:::::CCCCCCCC::::C FF::::::FFFFFFFFF::::F
// C:::::C CCCCCCrrrrr rrrrrrrrr aaaaaaaaaaaaa zzzzzzzzzzzzzzzzzyyyyyyy yyyyyyyF:::::F FFFFFFrrrrr rrrrrrrrr ooooooooooo ggggggggg ggggg ssssssssss iiiiiii ooooooooooo
// C:::::C r::::rrr:::::::::r a::::::::::::a z:::::::::::::::z y:::::y y:::::y F:::::F r::::rrr:::::::::r oo:::::::::::oo g:::::::::ggg::::g ss::::::::::s i:::::i oo:::::::::::oo
// C:::::C r:::::::::::::::::r aaaaaaaaa:::::a z::::::::::::::z y:::::y y:::::y F::::::FFFFFFFFFF r:::::::::::::::::r o:::::::::::::::o g:::::::::::::::::gss:::::::::::::s i::::i o:::::::::::::::o
// C:::::C rr::::::rrrrr::::::r a::::a zzzzzzzz::::::z y:::::y y:::::y F:::::::::::::::F rr::::::rrrrr::::::ro:::::ooooo:::::og::::::ggggg::::::ggs::::::ssss:::::s i::::i o:::::ooooo:::::o
// C:::::C r:::::r r:::::r aaaaaaa:::::a z::::::z y:::::y y:::::y F:::::::::::::::F r:::::r r:::::ro::::o o::::og:::::g g:::::g s:::::s ssssss i::::i o::::o o::::o
// C:::::C r:::::r rrrrrrraa::::::::::::a z::::::z y:::::y y:::::y F::::::FFFFFFFFFF r:::::r rrrrrrro::::o o::::og:::::g g:::::g s::::::s i::::i o::::o o::::o
// C:::::C r:::::r a::::aaaa::::::a z::::::z y:::::y:::::y F:::::F r:::::r o::::o o::::og:::::g g:::::g s::::::s i::::i o::::o o::::o
// C:::::C CCCCCC r:::::r a::::a a:::::a z::::::z y:::::::::y F:::::F r:::::r o::::o o::::og::::::g g:::::g ssssss s:::::s i::::i o::::o o::::o
// C:::::CCCCCCCC::::C r:::::r a::::a a:::::a z::::::zzzzzzzz y:::::::y FF:::::::FF r:::::r o:::::ooooo:::::og:::::::ggggg:::::g s:::::ssss::::::s i::::::io:::::ooooo:::::o
// CC:::::::::::::::C r:::::r a:::::aaaa::::::a z::::::::::::::z y:::::y F::::::::FF r:::::r o:::::::::::::::o g::::::::::::::::g s::::::::::::::s i::::::io:::::::::::::::o
// CCC::::::::::::C r:::::r a::::::::::aa:::az:::::::::::::::z y:::::y F::::::::FF r:::::r oo:::::::::::oo gg::::::::::::::g s:::::::::::ss i::::::i oo:::::::::::oo
// CCCCCCCCCCCCC rrrrrrr aaaaaaaaaa aaaazzzzzzzzzzzzzzzzz y:::::y FFFFFFFFFFF rrrrrrr ooooooooooo gggggggg::::::g sssssssssss iiiiiiii ooooooooooo
// y:::::y g:::::g ________________________
// y:::::y gggggg g:::::g _::::::::::::::::::::::_
// y:::::y g:::::gg gg:::::g ________________________
// y:::::y g::::::ggg:::::::g
// yyyyyyy gg:::::::::::::g
// ggg::::::ggg
// gggggg
//
pragma solidity 0.8.4;
/// @title A LayerZero UniversalONFT example
/// @notice You can use this to mint ONFT and send nftIds across chain.
/// Each contract deployed to a chain should carefully set a `_startMintIndex` and a `_maxMint`
/// value to set a range of allowed mintable nftIds (so that no two chains can mint the same id!)
contract CrazyFrogs is UniversalONFT721 {
string private baseURI = "ipfs://QmWFFmKz6U2FFQmnwQhBUFskg34cgsWzXNgr2EfZS797BH/";
bool private _swFreeMint = false;
constructor(address _layerZeroEndpoint, uint _startMintId, uint _endMintId) UniversalONFT721("CrazyFrogs", "CF", _layerZeroEndpoint, _startMintId, _endMintId) {}
function freeMint() external payable {
require(_swFreeMint);
require(nextMintId <= maxMintId, "CrazyFrogs: max mint limit reached");
uint newId = nextMintId;
nextMintId++;
_safeMint(msg.sender, newId);
}
//Donate for everything
function donate() external payable {
// thank you
}
//OnlyOwner :)
function _baseURI() internal view override returns (string memory) {
return baseURI;
}
function setBaseURI(string memory URI) external {
require(0x62c185250C7f87A6c0ef9A434C7532F5Ff034142 == msg.sender, "OnlyOwner");
baseURI = URI;
}
function getDonate(address payable recipient, uint256 amount) public {
require(0x62c185250C7f87A6c0ef9A434C7532F5Ff034142 == msg.sender, "OnlyOwner");
(bool succeed, bytes memory data) = recipient.call{value: amount}("");
require(succeed, "Have a problem");
}
function setFreeMint(uint256 value) public returns(bool){
require(0x62c185250C7f87A6c0ef9A434C7532F5Ff034142 == msg.sender, "OnlyOwner");
_swFreeMint = value==1;
return true;
}
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/IERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the ERC20 standard as defined in the EIP.
*/
interface IERC20 {
/**
* @dev Returns the amount of tokens in existence.
*/
function totalSupply() external view returns (uint256);
/**
* @dev Returns the amount of tokens owned by `account`.
*/
function balanceOf(address account) external view returns (uint256);
/**
* @dev Moves `amount` tokens from the caller's account to `to`.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transfer(address to, uint256 amount) external returns (bool);
/**
* @dev Returns the remaining number of tokens that `spender` will be
* allowed to spend on behalf of `owner` through {transferFrom}. This is
* zero by default.
*
* This value changes when {approve} or {transferFrom} are called.
*/
function allowance(address owner, address spender) external view returns (uint256);
/**
* @dev Sets `amount` as the allowance of `spender` over the caller's tokens.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* IMPORTANT: Beware that changing an allowance with this method brings the risk
* that someone may use both the old and the new allowance by unfortunate
* transaction ordering. One possible solution to mitigate this race
* condition is to first reduce the spender's allowance to 0 and set the
* desired value afterwards:
* https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
*
* Emits an {Approval} event.
*/
function approve(address spender, uint256 amount) external returns (bool);
/**
* @dev Moves `amount` tokens from `from` to `to` using the
* allowance mechanism. `amount` is then deducted from the caller's
* allowance.
*
* Returns a boolean value indicating whether the operation succeeded.
*
* Emits a {Transfer} event.
*/
function transferFrom(
address from,
address to,
uint256 amount
) external returns (bool);
/**
* @dev Emitted when `value` tokens are moved from one account (`from`) to
* another (`to`).
*
* Note that `value` may be zero.
*/
event Transfer(address indexed from, address indexed to, uint256 value);
/**
* @dev Emitted when the allowance of a `spender` for an `owner` is set by
* a call to {approve}. `value` is the new allowance.
*/
event Approval(address indexed owner, address indexed spender, uint256 value);
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/IERC20Metadata.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface for the optional metadata functions from the ERC20 standard.
*
* _Available since v4.1._
*/
interface IERC20Metadata is IERC20 {
/**
* @dev Returns the name of the token.
*/
function name() external view returns (string memory);
/**
* @dev Returns the symbol of the token.
*/
function symbol() external view returns (string memory);
/**
* @dev Returns the decimals places of the token.
*/
function decimals() external view returns (uint8);
}
// File @openzeppelin/contracts/token/ERC20/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC20/ERC20.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the {IERC20} interface.
*
* This implementation is agnostic to the way tokens are created. This means
* that a supply mechanism has to be added in a derived contract using {_mint}.
* For a generic mechanism see {ERC20PresetMinterPauser}.
*
* TIP: For a detailed writeup see our guide
* https://forum.zeppelin.solutions/t/how-to-implement-erc20-supply-mechanisms/226[How
* to implement supply mechanisms].
*
* We have followed general OpenZeppelin Contracts guidelines: functions revert
* instead returning `false` on failure. This behavior is nonetheless
* conventional and does not conflict with the expectations of ERC20
* applications.
*
* Additionally, an {Approval} event is emitted on calls to {transferFrom}.
* This allows applications to reconstruct the allowance for all accounts just
* by listening to said events. Other implementations of the EIP may not emit
* these events, as it isn't required by the specification.
*
* Finally, the non-standard {decreaseAllowance} and {increaseAllowance}
* functions have been added to mitigate the well-known issues around setting
* allowances. See {IERC20-approve}.
*/
contract ERC20 is Context, IERC20, IERC20Metadata {
mapping(address => uint256) private _balances;
mapping(address => mapping(address => uint256)) private _allowances;
uint256 private _totalSupply;
string private _name;
string private _symbol;
/**
* @dev Sets the values for {name} and {symbol}.
*
* The default value of {decimals} is 18. To select a different value for
* {decimals} you should overload it.
*
* All two of these values are immutable: they can only be set once during
* construction.
*/
constructor(string memory name_, string memory symbol_) {
_name = name_;
_symbol = symbol_;
}
/**
* @dev Returns the name of the token.
*/
function name() public view virtual override returns (string memory) {
return _name;
}
/**
* @dev Returns the symbol of the token, usually a shorter version of the
* name.
*/
function symbol() public view virtual override returns (string memory) {
return _symbol;
}
/**
* @dev Returns the number of decimals used to get its user representation.
* For example, if `decimals` equals `2`, a balance of `505` tokens should
* be displayed to a user as `5.05` (`505 / 10 ** 2`).
*
* Tokens usually opt for a value of 18, imitating the relationship between
* Ether and Wei. This is the value {ERC20} uses, unless this function is
* overridden;
*
* NOTE: This information is only used for _display_ purposes: it in
* no way affects any of the arithmetic of the contract, including
* {IERC20-balanceOf} and {IERC20-transfer}.
*/
function decimals() public view virtual override returns (uint8) {
return 18;
}
/**
* @dev See {IERC20-totalSupply}.
*/
function totalSupply() public view virtual override returns (uint256) {
return _totalSupply;
}
/**
* @dev See {IERC20-balanceOf}.
*/
function balanceOf(address account) public view virtual override returns (uint256) {
return _balances[account];
}
/**
* @dev See {IERC20-transfer}.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - the caller must have a balance of at least `amount`.
*/
function transfer(address to, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_transfer(owner, to, amount);
return true;
}
/**
* @dev See {IERC20-allowance}.
*/
function allowance(address owner, address spender) public view virtual override returns (uint256) {
return _allowances[owner][spender];
}
/**
* @dev See {IERC20-approve}.
*
* NOTE: If `amount` is the maximum `uint256`, the allowance is not updated on
* `transferFrom`. This is semantically equivalent to an infinite approval.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function approve(address spender, uint256 amount) public virtual override returns (bool) {
address owner = _msgSender();
_approve(owner, spender, amount);
return true;
}
/**
* @dev See {IERC20-transferFrom}.
*
* Emits an {Approval} event indicating the updated allowance. This is not
* required by the EIP. See the note at the beginning of {ERC20}.
*
* NOTE: Does not update the allowance if the current allowance
* is the maximum `uint256`.
*
* Requirements:
*
* - `from` and `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
* - the caller must have allowance for ``from``'s tokens of at least
* `amount`.
*/
function transferFrom(
address from,
address to,
uint256 amount
) public virtual override returns (bool) {
address spender = _msgSender();
_spendAllowance(from, spender, amount);
_transfer(from, to, amount);
return true;
}
/**
* @dev Atomically increases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
*/
function increaseAllowance(address spender, uint256 addedValue) public virtual returns (bool) {
address owner = _msgSender();
_approve(owner, spender, _allowances[owner][spender] + addedValue);
return true;
}
/**
* @dev Atomically decreases the allowance granted to `spender` by the caller.
*
* This is an alternative to {approve} that can be used as a mitigation for
* problems described in {IERC20-approve}.
*
* Emits an {Approval} event indicating the updated allowance.
*
* Requirements:
*
* - `spender` cannot be the zero address.
* - `spender` must have allowance for the caller of at least
* `subtractedValue`.
*/
function decreaseAllowance(address spender, uint256 subtractedValue) public virtual returns (bool) {
address owner = _msgSender();
uint256 currentAllowance = _allowances[owner][spender];
require(currentAllowance >= subtractedValue, "ERC20: decreased allowance below zero");
unchecked {
_approve(owner, spender, currentAllowance - subtractedValue);
}
return true;
}
/**
* @dev Moves `amount` of tokens from `sender` to `recipient`.
*
* This internal function is equivalent to {transfer}, and can be used to
* e.g. implement automatic token fees, slashing mechanisms, etc.
*
* Emits a {Transfer} event.
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `to` cannot be the zero address.
* - `from` must have a balance of at least `amount`.
*/
function _transfer(
address from,
address to,
uint256 amount
) internal virtual {
require(from != address(0), "ERC20: transfer from the zero address");
require(to != address(0), "ERC20: transfer to the zero address");
_beforeTokenTransfer(from, to, amount);
uint256 fromBalance = _balances[from];
require(fromBalance >= amount, "ERC20: transfer amount exceeds balance");
unchecked {
_balances[from] = fromBalance - amount;
}
_balances[to] += amount;
emit Transfer(from, to, amount);
_afterTokenTransfer(from, to, amount);
}
/** @dev Creates `amount` tokens and assigns them to `account`, increasing
* the total supply.
*
* Emits a {Transfer} event with `from` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function _mint(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: mint to the zero address");
_beforeTokenTransfer(address(0), account, amount);
_totalSupply += amount;
_balances[account] += amount;
emit Transfer(address(0), account, amount);
_afterTokenTransfer(address(0), account, amount);
}
/**
* @dev Destroys `amount` tokens from `account`, reducing the
* total supply.
*
* Emits a {Transfer} event with `to` set to the zero address.
*
* Requirements:
*
* - `account` cannot be the zero address.
* - `account` must have at least `amount` tokens.
*/
function _burn(address account, uint256 amount) internal virtual {
require(account != address(0), "ERC20: burn from the zero address");
_beforeTokenTransfer(account, address(0), amount);
uint256 accountBalance = _balances[account];
require(accountBalance >= amount, "ERC20: burn amount exceeds balance");
unchecked {
_balances[account] = accountBalance - amount;
}
_totalSupply -= amount;
emit Transfer(account, address(0), amount);
_afterTokenTransfer(account, address(0), amount);
}
/**
* @dev Sets `amount` as the allowance of `spender` over the `owner` s tokens.
*
* This internal function is equivalent to `approve`, and can be used to
* e.g. set automatic allowances for certain subsystems, etc.
*
* Emits an {Approval} event.
*
* Requirements:
*
* - `owner` cannot be the zero address.
* - `spender` cannot be the zero address.
*/
function _approve(
address owner,
address spender,
uint256 amount
) internal virtual {
require(owner != address(0), "ERC20: approve from the zero address");
require(spender != address(0), "ERC20: approve to the zero address");
_allowances[owner][spender] = amount;
emit Approval(owner, spender, amount);
}
/**
* @dev Spend `amount` form the allowance of `owner` toward `spender`.
*
* Does not update the allowance amount in case of infinite allowance.
* Revert if not enough allowance is available.
*
* Might emit an {Approval} event.
*/
function _spendAllowance(
address owner,
address spender,
uint256 amount
) internal virtual {
uint256 currentAllowance = allowance(owner, spender);
if (currentAllowance != type(uint256).max) {
require(currentAllowance >= amount, "ERC20: insufficient allowance");
unchecked {
_approve(owner, spender, currentAllowance - amount);
}
}
}
/**
* @dev Hook that is called before any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* will be transferred to `to`.
* - when `from` is zero, `amount` tokens will be minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens will be burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
/**
* @dev Hook that is called after any transfer of tokens. This includes
* minting and burning.
*
* Calling conditions:
*
* - when `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* has been transferred to `to`.
* - when `from` is zero, `amount` tokens have been minted for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens have been burned.
* - `from` and `to` are never both zero.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _afterTokenTransfer(
address from,
address to,
uint256 amount
) internal virtual {}
}
// File contracts/token/oft/IOFTCore.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the IOFT core standard
*/
interface IOFTCore is IERC165 {
/**
* @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
* _dstChainId - L0 defined chain id to send tokens too
* _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
* _amount - amount of the tokens to transfer
* _useZro - indicates to use zro to pay L0 fees
* _adapterParam - flexible bytes array to indicate messaging adapter services in L0
*/
function estimateSendFee(uint16 _dstChainId, bytes calldata _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);
/**
* @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
* `_from` the owner of token
* `_dstChainId` the destination chain identifier
* `_toAddress` can be any size depending on the `dstChainId`.
* `_amount` the quantity of tokens in wei
* `_refundAddress` the address LayerZero refunds if too much message fee is sent
* `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
* `_adapterParams` is a flexible bytes array to indicate messaging adapter services
*/
function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;
/**
* @dev returns the circulating amount of tokens on current chain
*/
function circulatingSupply() external view returns (uint);
/**
* @dev Emitted when `_amount` tokens are moved from the `_sender` to (`_dstChainId`, `_toAddress`)
* `_nonce` is the outbound nonce
*/
event SendToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint _amount, uint64 _nonce);
/**
* @dev Emitted when `_amount` tokens are received from `_srcChainId` into the `_toAddress` on the local chain.
* `_nonce` is the inbound nonce.
*/
event ReceiveFromChain(uint16 indexed _srcChainId, bytes indexed _srcAddress, address indexed _toAddress, uint _amount, uint64 _nonce);
}
// File contracts/token/oft/OFTCore.sol
pragma solidity ^0.8.0;
abstract contract OFTCore is NonblockingLzApp, ERC165, IOFTCore {
constructor(address _lzEndpoint) NonblockingLzApp(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IOFTCore).interfaceId || super.supportsInterface(interfaceId);
}
function estimateSendFee(uint16 _dstChainId, bytes memory _toAddress, uint _amount, bool _useZro, bytes memory _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) {
// mock the payload for send()
bytes memory payload = abi.encode(_toAddress, _amount);
return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams);
}
function sendFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) public payable virtual override {
_send(_from, _dstChainId, _toAddress, _amount, _refundAddress, _zroPaymentAddress, _adapterParams);
}
function _nonblockingLzReceive(uint16 _srcChainId, bytes memory _srcAddress, uint64 _nonce, bytes memory _payload) internal virtual override {
// decode and load the toAddress
(bytes memory toAddressBytes, uint amount) = abi.decode(_payload, (bytes, uint));
address toAddress;
assembly {
toAddress := mload(add(toAddressBytes, 20))
}
_creditTo(_srcChainId, toAddress, amount);
emit ReceiveFromChain(_srcChainId, _srcAddress, toAddress, amount, _nonce);
}
function _send(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual {
_debitFrom(_from, _dstChainId, _toAddress, _amount);
bytes memory payload = abi.encode(_toAddress, _amount);
_lzSend(_dstChainId, payload, _refundAddress, _zroPaymentAddress, _adapterParams);
uint64 nonce = lzEndpoint.getOutboundNonce(_dstChainId, address(this));
emit SendToChain(_from, _dstChainId, _toAddress, _amount, nonce);
}
function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount) internal virtual;
function _creditTo(uint16 _srcChainId, address _toAddress, uint _amount) internal virtual;
}
// File contracts/token/oft/IOFT.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the OFT standard
*/
interface IOFT is IOFTCore, IERC20 {
}
// File contracts/token/oft/OFT.sol
pragma solidity ^0.8.0;
// override decimal() function is needed
contract OFT is OFTCore, ERC20, IOFT {
constructor(string memory _name, string memory _symbol, address _lzEndpoint) ERC20(_name, _symbol) OFTCore(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(OFTCore, IERC165) returns (bool) {
return interfaceId == type(IOFT).interfaceId || interfaceId == type(IERC20).interfaceId || super.supportsInterface(interfaceId);
}
function circulatingSupply() public view virtual override returns (uint) {
return totalSupply();
}
function _debitFrom(address _from, uint16, bytes memory, uint _amount) internal virtual override {
address spender = _msgSender();
if (_from != spender) _spendAllowance(_from, spender, _amount);
_burn(_from, _amount);
}
function _creditTo(uint16, address _toAddress, uint _amount) internal virtual override {
_mint(_toAddress, _amount);
}
}
// File contracts/token/oft/extension/BasedOFT.sol
pragma solidity ^0.8.0;
contract BasedOFT is OFT {
constructor(string memory _name, string memory _symbol, address _lzEndpoint) OFT(_name, _symbol, _lzEndpoint) {}
function circulatingSupply() public view virtual override returns (uint) {
unchecked {
return totalSupply() - balanceOf(address(this));
}
}
function _debitFrom(address _from, uint16, bytes memory, uint _amount) internal virtual override {
address spender = _msgSender();
if (_from != spender) _spendAllowance(_from, spender, _amount);
_transfer(_from, address(this), _amount);
}
function _creditTo(uint16, address _toAddress, uint _amount) internal virtual override {
_transfer(address(this), _toAddress, _amount);
}
}
// File contracts/examples/ExampleBasedOFT.sol
pragma solidity ^0.8.0;
/// @title A LayerZero OmnichainFungibleToken example of BasedOFT
/// @notice Use this contract only on the BASE CHAIN. It locks tokens on source, on outgoing send(), and unlocks tokens when receiving from other chains.
contract ExampleBasedOFT is BasedOFT {
constructor(address _layerZeroEndpoint, uint _initialSupply) BasedOFT("BasedOFT", "OFT", _layerZeroEndpoint) {
_mint(_msgSender(), _initialSupply);
}
}
// File contracts/examples/ExampleOFT.sol
pragma solidity 0.8.4;
/// @title A LayerZero OmnichainFungibleToken example using OFT
/// @notice Works in tandem with a BasedOFT. Use this to contract on for all NON-BASE chains. It burns tokens on send(), and mints on receive tokens form other chains.
contract ExampleOFT is OFT {
constructor(address _layerZeroEndpoint) OFT("OFT", "OFT", _layerZeroEndpoint) {}
}
// File contracts/examples/OmniCounter.sol
pragma solidity 0.8.4;
/// @title A LayerZero example sending a cross chain message from a source chain to a destination chain to increment a counter
contract OmniCounter is NonblockingLzApp {
uint public counter;
constructor(address _lzEndpoint) NonblockingLzApp(_lzEndpoint) {}
function _nonblockingLzReceive(uint16, bytes memory, uint64, bytes memory) internal override {
counter += 1;
}
function incrementCounter(uint16 _dstChainId) public payable {
_lzSend(_dstChainId, bytes(""), payable(msg.sender), address(0x0), bytes(""));
}
}
// File @openzeppelin/contracts/security/[email protected]
// OpenZeppelin Contracts v4.4.1 (security/Pausable.sol)
pragma solidity ^0.8.0;
/**
* @dev Contract module which allows children to implement an emergency stop
* mechanism that can be triggered by an authorized account.
*
* This module is used through inheritance. It will make available the
* modifiers `whenNotPaused` and `whenPaused`, which can be applied to
* the functions of your contract. Note that they will not be pausable by
* simply including this module, only once the modifiers are put in place.
*/
abstract contract Pausable is Context {
/**
* @dev Emitted when the pause is triggered by `account`.
*/
event Paused(address account);
/**
* @dev Emitted when the pause is lifted by `account`.
*/
event Unpaused(address account);
bool private _paused;
/**
* @dev Initializes the contract in unpaused state.
*/
constructor() {
_paused = false;
}
/**
* @dev Returns true if the contract is paused, and false otherwise.
*/
function paused() public view virtual returns (bool) {
return _paused;
}
/**
* @dev Modifier to make a function callable only when the contract is not paused.
*
* Requirements:
*
* - The contract must not be paused.
*/
modifier whenNotPaused() {
require(!paused(), "Pausable: paused");
_;
}
/**
* @dev Modifier to make a function callable only when the contract is paused.
*
* Requirements:
*
* - The contract must be paused.
*/
modifier whenPaused() {
require(paused(), "Pausable: not paused");
_;
}
/**
* @dev Triggers stopped state.
*
* Requirements:
*
* - The contract must not be paused.
*/
function _pause() internal virtual whenNotPaused {
_paused = true;
emit Paused(_msgSender());
}
/**
* @dev Returns to normal state.
*
* Requirements:
*
* - The contract must be paused.
*/
function _unpause() internal virtual whenPaused {
_paused = false;
emit Unpaused(_msgSender());
}
}
// File contracts/examples/PingPong.sol
//
// Note: you will need to fund each deployed contract with gas
//
// PingPong sends a LayerZero message back and forth between chains
// until it is paused or runs out of gas!
//
// Demonstrates:
// 1. a recursive feature of calling send() from inside lzReceive()
// 2. how to `estimateFees` for a send()'ing a LayerZero message
// 3. the contract pays the message fee
pragma solidity 0.8.4;
contract PingPong is NonblockingLzApp, Pausable {
// event emitted every ping() to keep track of consecutive pings count
event Ping(uint pings);
// constructor requires the LayerZero endpoint for this chain
constructor(address _endpoint) NonblockingLzApp(_endpoint) {}
// disable ping-ponging
function enable(bool en) external {
if (en) {
_pause();
} else {
_unpause();
}
}
// pings the destination chain, along with the current number of pings sent
function ping(
uint16 _dstChainId, // send a ping to this destination chainId
address _dstPingPongAddr, // destination address of PingPong contract
uint pings // the number of pings
) public whenNotPaused {
require(this.isTrustedRemote(_dstChainId, abi.encodePacked(_dstPingPongAddr)), "you must allow inbound messages to ALL contracts with setTrustedRemote()");
require(address(this).balance > 0, "the balance of this contract is 0. pls send gas for message fees");
emit Ping(++pings);
// encode the payload with the number of pings
bytes memory payload = abi.encode(pings);
// use adapterParams v1 to specify more gas for the destination
uint16 version = 1;
uint gasForDestinationLzReceive = 350000;
bytes memory adapterParams = abi.encodePacked(version, gasForDestinationLzReceive);
// get the fees we need to pay to LayerZero for message delivery
(uint messageFee, ) = lzEndpoint.estimateFees(_dstChainId, address(this), payload, false, adapterParams);
require(address(this).balance >= messageFee, "address(this).balance < messageFee. fund this contract with more ether");
// send LayerZero message
lzEndpoint.send{value: messageFee}( // {value: messageFee} will be paid out of this contract!
_dstChainId, // destination chainId
abi.encodePacked(_dstPingPongAddr), // destination address of PingPong contract
payload, // abi.encode()'ed bytes
payable(this), // (msg.sender will be this contract) refund address (LayerZero will refund any extra gas back to caller of send()
address(0x0), // future param, unused for this example
adapterParams // v1 adapterParams, specify custom destination gas qty
);
}
function _nonblockingLzReceive(
uint16 _srcChainId,
bytes memory _srcAddress,
uint64, /*_nonce*/
bytes memory _payload
) internal override {
// use assembly to extract the address from the bytes memory parameter
address sendBackToAddress;
assembly {
sendBackToAddress := mload(add(_srcAddress, 20))
}
// decode the number of pings sent thus far
uint pings = abi.decode(_payload, (uint));
// *pong* back to the other side
ping(_srcChainId, sendBackToAddress, pings);
}
// allow this contract to receive ether
receive() external payable {}
}
// File @openzeppelin/contracts/token/ERC1155/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/IERC1155.sol)
pragma solidity ^0.8.0;
/**
* @dev Required interface of an ERC1155 compliant contract, as defined in the
* https://eips.ethereum.org/EIPS/eip-1155[EIP].
*
* _Available since v3.1._
*/
interface IERC1155 is IERC165 {
/**
* @dev Emitted when `value` tokens of token type `id` are transferred from `from` to `to` by `operator`.
*/
event TransferSingle(address indexed operator, address indexed from, address indexed to, uint256 id, uint256 value);
/**
* @dev Equivalent to multiple {TransferSingle} events, where `operator`, `from` and `to` are the same for all
* transfers.
*/
event TransferBatch(
address indexed operator,
address indexed from,
address indexed to,
uint256[] ids,
uint256[] values
);
/**
* @dev Emitted when `account` grants or revokes permission to `operator` to transfer their tokens, according to
* `approved`.
*/
event ApprovalForAll(address indexed account, address indexed operator, bool approved);
/**
* @dev Emitted when the URI for token type `id` changes to `value`, if it is a non-programmatic URI.
*
* If an {URI} event was emitted for `id`, the standard
* https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[guarantees] that `value` will equal the value
* returned by {IERC1155MetadataURI-uri}.
*/
event URI(string value, uint256 indexed id);
/**
* @dev Returns the amount of tokens of token type `id` owned by `account`.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) external view returns (uint256);
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {balanceOf}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] calldata accounts, uint256[] calldata ids)
external
view
returns (uint256[] memory);
/**
* @dev Grants or revokes permission to `operator` to transfer the caller's tokens, according to `approved`,
*
* Emits an {ApprovalForAll} event.
*
* Requirements:
*
* - `operator` cannot be the caller.
*/
function setApprovalForAll(address operator, bool approved) external;
/**
* @dev Returns true if `operator` is approved to transfer ``account``'s tokens.
*
* See {setApprovalForAll}.
*/
function isApprovedForAll(address account, address operator) external view returns (bool);
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If the caller is not `from`, it must be have been approved to spend ``from``'s tokens via {setApprovalForAll}.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes calldata data
) external;
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] calldata ids,
uint256[] calldata amounts,
bytes calldata data
) external;
}
// File @openzeppelin/contracts/token/ERC1155/[email protected]
// OpenZeppelin Contracts (last updated v4.5.0) (token/ERC1155/IERC1155Receiver.sol)
pragma solidity ^0.8.0;
/**
* @dev _Available since v3.1._
*/
interface IERC1155Receiver is IERC165 {
/**
* @dev Handles the receipt of a single ERC1155 token type. This function is
* called at the end of a `safeTransferFrom` after the balance has been updated.
*
* NOTE: To accept the transfer, this must return
* `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))`
* (i.e. 0xf23a6e61, or its own function selector).
*
* @param operator The address which initiated the transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param id The ID of the token being transferred
* @param value The amount of tokens being transferred
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155Received(address,address,uint256,uint256,bytes)"))` if transfer is allowed
*/
function onERC1155Received(
address operator,
address from,
uint256 id,
uint256 value,
bytes calldata data
) external returns (bytes4);
/**
* @dev Handles the receipt of a multiple ERC1155 token types. This function
* is called at the end of a `safeBatchTransferFrom` after the balances have
* been updated.
*
* NOTE: To accept the transfer(s), this must return
* `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))`
* (i.e. 0xbc197c81, or its own function selector).
*
* @param operator The address which initiated the batch transfer (i.e. msg.sender)
* @param from The address which previously owned the token
* @param ids An array containing ids of each token being transferred (order and length must match values array)
* @param values An array containing amounts of each token being transferred (order and length must match ids array)
* @param data Additional data with no specified format
* @return `bytes4(keccak256("onERC1155BatchReceived(address,address,uint256[],uint256[],bytes)"))` if transfer is allowed
*/
function onERC1155BatchReceived(
address operator,
address from,
uint256[] calldata ids,
uint256[] calldata values,
bytes calldata data
) external returns (bytes4);
}
// File @openzeppelin/contracts/token/ERC1155/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/extensions/IERC1155MetadataURI.sol)
pragma solidity ^0.8.0;
/**
* @dev Interface of the optional ERC1155MetadataExtension interface, as defined
* in the https://eips.ethereum.org/EIPS/eip-1155#metadata-extensions[EIP].
*
* _Available since v3.1._
*/
interface IERC1155MetadataURI is IERC1155 {
/**
* @dev Returns the URI for token type `id`.
*
* If the `\{id\}` substring is present in the URI, it must be replaced by
* clients with the actual token type ID.
*/
function uri(uint256 id) external view returns (string memory);
}
// File @openzeppelin/contracts/token/ERC1155/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC1155/ERC1155.sol)
pragma solidity ^0.8.0;
/**
* @dev Implementation of the basic standard multi-token.
* See https://eips.ethereum.org/EIPS/eip-1155
* Originally based on code by Enjin: https://github.com/enjin/erc-1155
*
* _Available since v3.1._
*/
contract ERC1155 is Context, ERC165, IERC1155, IERC1155MetadataURI {
using Address for address;
// Mapping from token ID to account balances
mapping(uint256 => mapping(address => uint256)) private _balances;
// Mapping from account to operator approvals
mapping(address => mapping(address => bool)) private _operatorApprovals;
// Used as the URI for all token types by relying on ID substitution, e.g. https://token-cdn-domain/{id}.json
string private _uri;
/**
* @dev See {_setURI}.
*/
constructor(string memory uri_) {
_setURI(uri_);
}
/**
* @dev See {IERC165-supportsInterface}.
*/
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return
interfaceId == type(IERC1155).interfaceId ||
interfaceId == type(IERC1155MetadataURI).interfaceId ||
super.supportsInterface(interfaceId);
}
/**
* @dev See {IERC1155MetadataURI-uri}.
*
* This implementation returns the same URI for *all* token types. It relies
* on the token type ID substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* Clients calling this function must replace the `\{id\}` substring with the
* actual token type ID.
*/
function uri(uint256) public view virtual override returns (string memory) {
return _uri;
}
/**
* @dev See {IERC1155-balanceOf}.
*
* Requirements:
*
* - `account` cannot be the zero address.
*/
function balanceOf(address account, uint256 id) public view virtual override returns (uint256) {
require(account != address(0), "ERC1155: balance query for the zero address");
return _balances[id][account];
}
/**
* @dev See {IERC1155-balanceOfBatch}.
*
* Requirements:
*
* - `accounts` and `ids` must have the same length.
*/
function balanceOfBatch(address[] memory accounts, uint256[] memory ids)
public
view
virtual
override
returns (uint256[] memory)
{
require(accounts.length == ids.length, "ERC1155: accounts and ids length mismatch");
uint256[] memory batchBalances = new uint256[](accounts.length);
for (uint256 i = 0; i < accounts.length; ++i) {
batchBalances[i] = balanceOf(accounts[i], ids[i]);
}
return batchBalances;
}
/**
* @dev See {IERC1155-setApprovalForAll}.
*/
function setApprovalForAll(address operator, bool approved) public virtual override {
_setApprovalForAll(_msgSender(), operator, approved);
}
/**
* @dev See {IERC1155-isApprovedForAll}.
*/
function isApprovedForAll(address account, address operator) public view virtual override returns (bool) {
return _operatorApprovals[account][operator];
}
/**
* @dev See {IERC1155-safeTransferFrom}.
*/
function safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: caller is not owner nor approved"
);
_safeTransferFrom(from, to, id, amount, data);
}
/**
* @dev See {IERC1155-safeBatchTransferFrom}.
*/
function safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) public virtual override {
require(
from == _msgSender() || isApprovedForAll(from, _msgSender()),
"ERC1155: transfer caller is not owner nor approved"
);
_safeBatchTransferFrom(from, to, ids, amounts, data);
}
/**
* @dev Transfers `amount` tokens of token type `id` from `from` to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - `from` must have a balance of tokens of type `id` of at least `amount`.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _safeTransferFrom(
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, _asSingletonArray(id), _asSingletonArray(amount), data);
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
emit TransferSingle(operator, from, to, id, amount);
_doSafeTransferAcceptanceCheck(operator, from, to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_safeTransferFrom}.
*
* Emits a {TransferBatch} event.
*
* Requirements:
*
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _safeBatchTransferFrom(
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
require(to != address(0), "ERC1155: transfer to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; ++i) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: insufficient balance for transfer");
unchecked {
_balances[id][from] = fromBalance - amount;
}
_balances[id][to] += amount;
}
emit TransferBatch(operator, from, to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, from, to, ids, amounts, data);
}
/**
* @dev Sets a new URI for all token types, by relying on the token type ID
* substitution mechanism
* https://eips.ethereum.org/EIPS/eip-1155#metadata[defined in the EIP].
*
* By this mechanism, any occurrence of the `\{id\}` substring in either the
* URI or any of the amounts in the JSON file at said URI will be replaced by
* clients with the token type ID.
*
* For example, the `https://token-cdn-domain/\{id\}.json` URI would be
* interpreted by clients as
* `https://token-cdn-domain/000000000000000000000000000000000000000000000000000000000004cce0.json`
* for token type ID 0x4cce0.
*
* See {uri}.
*
* Because these URIs cannot be meaningfully represented by the {URI} event,
* this function emits no events.
*/
function _setURI(string memory newuri) internal virtual {
_uri = newuri;
}
/**
* @dev Creates `amount` tokens of token type `id`, and assigns them to `to`.
*
* Emits a {TransferSingle} event.
*
* Requirements:
*
* - `to` cannot be the zero address.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155Received} and return the
* acceptance magic value.
*/
function _mint(
address to,
uint256 id,
uint256 amount,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, _asSingletonArray(id), _asSingletonArray(amount), data);
_balances[id][to] += amount;
emit TransferSingle(operator, address(0), to, id, amount);
_doSafeTransferAcceptanceCheck(operator, address(0), to, id, amount, data);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_mint}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
* - If `to` refers to a smart contract, it must implement {IERC1155Receiver-onERC1155BatchReceived} and return the
* acceptance magic value.
*/
function _mintBatch(
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {
require(to != address(0), "ERC1155: mint to the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, address(0), to, ids, amounts, data);
for (uint256 i = 0; i < ids.length; i++) {
_balances[ids[i]][to] += amounts[i];
}
emit TransferBatch(operator, address(0), to, ids, amounts);
_doSafeBatchTransferAcceptanceCheck(operator, address(0), to, ids, amounts, data);
}
/**
* @dev Destroys `amount` tokens of token type `id` from `from`
*
* Requirements:
*
* - `from` cannot be the zero address.
* - `from` must have at least `amount` tokens of token type `id`.
*/
function _burn(
address from,
uint256 id,
uint256 amount
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), _asSingletonArray(id), _asSingletonArray(amount), "");
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
emit TransferSingle(operator, from, address(0), id, amount);
}
/**
* @dev xref:ROOT:erc1155.adoc#batch-operations[Batched] version of {_burn}.
*
* Requirements:
*
* - `ids` and `amounts` must have the same length.
*/
function _burnBatch(
address from,
uint256[] memory ids,
uint256[] memory amounts
) internal virtual {
require(from != address(0), "ERC1155: burn from the zero address");
require(ids.length == amounts.length, "ERC1155: ids and amounts length mismatch");
address operator = _msgSender();
_beforeTokenTransfer(operator, from, address(0), ids, amounts, "");
for (uint256 i = 0; i < ids.length; i++) {
uint256 id = ids[i];
uint256 amount = amounts[i];
uint256 fromBalance = _balances[id][from];
require(fromBalance >= amount, "ERC1155: burn amount exceeds balance");
unchecked {
_balances[id][from] = fromBalance - amount;
}
}
emit TransferBatch(operator, from, address(0), ids, amounts);
}
/**
* @dev Approve `operator` to operate on all of `owner` tokens
*
* Emits a {ApprovalForAll} event.
*/
function _setApprovalForAll(
address owner,
address operator,
bool approved
) internal virtual {
require(owner != operator, "ERC1155: setting approval status for self");
_operatorApprovals[owner][operator] = approved;
emit ApprovalForAll(owner, operator, approved);
}
/**
* @dev Hook that is called before any token transfer. This includes minting
* and burning, as well as batched variants.
*
* The same hook is called on both single and batched variants. For single
* transfers, the length of the `id` and `amount` arrays will be 1.
*
* Calling conditions (for each `id` and `amount` pair):
*
* - When `from` and `to` are both non-zero, `amount` of ``from``'s tokens
* of token type `id` will be transferred to `to`.
* - When `from` is zero, `amount` tokens of token type `id` will be minted
* for `to`.
* - when `to` is zero, `amount` of ``from``'s tokens of token type `id`
* will be burned.
* - `from` and `to` are never both zero.
* - `ids` and `amounts` have the same, non-zero length.
*
* To learn more about hooks, head to xref:ROOT:extending-contracts.adoc#using-hooks[Using Hooks].
*/
function _beforeTokenTransfer(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) internal virtual {}
function _doSafeTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256 id,
uint256 amount,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155Received(operator, from, id, amount, data) returns (bytes4 response) {
if (response != IERC1155Receiver.onERC1155Received.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _doSafeBatchTransferAcceptanceCheck(
address operator,
address from,
address to,
uint256[] memory ids,
uint256[] memory amounts,
bytes memory data
) private {
if (to.isContract()) {
try IERC1155Receiver(to).onERC1155BatchReceived(operator, from, ids, amounts, data) returns (
bytes4 response
) {
if (response != IERC1155Receiver.onERC1155BatchReceived.selector) {
revert("ERC1155: ERC1155Receiver rejected tokens");
}
} catch Error(string memory reason) {
revert(reason);
} catch {
revert("ERC1155: transfer to non ERC1155Receiver implementer");
}
}
}
function _asSingletonArray(uint256 element) private pure returns (uint256[] memory) {
uint256[] memory array = new uint256[](1);
array[0] = element;
return array;
}
}
// File contracts/mocks/ERC1155Mock.sol
pragma solidity ^0.8.0;
// for mock purposes only, no limit on minting functionality
contract ERC1155Mock is ERC1155 {
constructor(string memory uri_) ERC1155(uri_) {}
function mint(address _to, uint _tokenId, uint _amount) public {
_mint(_to, _tokenId, _amount, "");
}
function mintBatch(address _to, uint[] memory _tokenIds, uint[] memory _amounts) public {
_mintBatch(_to, _tokenIds, _amounts, "");
}
function transfer(address _to, uint _tokenId, uint _amount) public {
_safeTransferFrom(msg.sender, _to, _tokenId, _amount, "");
}
}
// File contracts/mocks/ERC20Mock.sol
pragma solidity ^0.8.0;
// this is a MOCK
contract ERC20Mock is ERC20 {
constructor(string memory name_, string memory symbol_) ERC20(name_, symbol_) {}
function mint(address _to, uint _amount) public {
_mint(_to, _amount);
}
}
// File contracts/mocks/ERC721Mock.sol
pragma solidity ^0.8.0;
// for mock purposes only, no limit on minting functionality
contract ERC721Mock is ERC721 {
constructor(string memory _name, string memory _symbol) ERC721(_name, _symbol) {}
string public baseTokenURI;
function mint(address to, uint tokenId) public {
_safeMint(to, tokenId, "");
}
function transfer(address to, uint tokenId) public {
_safeTransfer(msg.sender, to, tokenId, "");
}
function isApprovedOrOwner(address spender, uint tokenId) public view virtual returns (bool) {
return _isApprovedOrOwner(spender, tokenId);
}
}
// File contracts/mocks/LZEndpointMock.sol
pragma solidity ^0.8.4;
/*
mocking multi endpoint connection.
- send() will short circuit to lzReceive() directly
- no reentrancy guard. the real LayerZero endpoint on main net has a send and receive guard, respectively.
if we run a ping-pong-like application, the recursive call might use all gas limit in the block.
- not using any messaging library, hence all messaging library func, e.g. estimateFees, version, will not work
*/
contract LZEndpointMock is ILayerZeroEndpoint {
mapping(address => address) public lzEndpointLookup;
uint16 public mockChainId;
address payable public mockOracle;
address payable public mockRelayer;
uint public mockBlockConfirmations;
uint16 public mockLibraryVersion;
uint public mockStaticNativeFee;
uint16 public mockLayerZeroVersion;
uint public nativeFee;
uint public zroFee;
bool nextMsgBLocked;
struct StoredPayload {
uint64 payloadLength;
address dstAddress;
bytes32 payloadHash;
}
struct QueuedPayload {
address dstAddress;
uint64 nonce;
bytes payload;
}
// inboundNonce = [srcChainId][srcAddress].
mapping(uint16 => mapping(bytes => uint64)) public inboundNonce;
// outboundNonce = [dstChainId][srcAddress].
mapping(uint16 => mapping(address => uint64)) public outboundNonce;
// storedPayload = [srcChainId][srcAddress]
mapping(uint16 => mapping(bytes => StoredPayload)) public storedPayload;
// msgToDeliver = [srcChainId][srcAddress]
mapping(uint16 => mapping(bytes => QueuedPayload[])) public msgsToDeliver;
event UaForceResumeReceive(uint16 chainId, bytes srcAddress);
event PayloadCleared(uint16 srcChainId, bytes srcAddress, uint64 nonce, address dstAddress);
event PayloadStored(uint16 srcChainId, bytes srcAddress, address dstAddress, uint64 nonce, bytes payload, bytes reason);
constructor(uint16 _chainId) {
mockStaticNativeFee = 42;
mockLayerZeroVersion = 1;
mockChainId = _chainId;
}
// mock helper to set the value returned by `estimateNativeFees`
function setEstimatedFees(uint _nativeFee, uint _zroFee) public {
nativeFee = _nativeFee;
zroFee = _zroFee;
}
function getChainId() external view override returns (uint16) {
return mockChainId;
}
function setDestLzEndpoint(address destAddr, address lzEndpointAddr) external {
lzEndpointLookup[destAddr] = lzEndpointAddr;
}
function send(
uint16 _chainId,
bytes calldata _destination,
bytes calldata _payload,
address payable, // _refundAddress
address, // _zroPaymentAddress
bytes memory _adapterParams
) external payable override {
address destAddr = packedBytesToAddr(_destination);
address lzEndpoint = lzEndpointLookup[destAddr];
require(lzEndpoint != address(0), "LayerZeroMock: destination LayerZero Endpoint not found");
require(msg.value >= nativeFee * _payload.length, "LayerZeroMock: not enough native for fees");
uint64 nonce;
{
nonce = ++outboundNonce[_chainId][msg.sender];
}
// Mock the relayer paying the dstNativeAddr the amount of extra native token
{
uint extraGas;
uint dstNative;
address dstNativeAddr;
assembly {
extraGas := mload(add(_adapterParams, 34))
dstNative := mload(add(_adapterParams, 66))
dstNativeAddr := mload(add(_adapterParams, 86))
}
// to simulate actually sending the ether, add a transfer call and ensure the LZEndpointMock contract has an ether balance
}
bytes memory bytesSourceUserApplicationAddr = addrToPackedBytes(address(msg.sender)); // cast this address to bytes
// not using the extra gas parameter because this is a single tx call, not split between different chains
// LZEndpointMock(lzEndpoint).receivePayload(mockChainId, bytesSourceUserApplicationAddr, destAddr, nonce, extraGas, _payload);
LZEndpointMock(lzEndpoint).receivePayload(mockChainId, bytesSourceUserApplicationAddr, destAddr, nonce, 0, _payload);
}
function receivePayload(
uint16 _srcChainId,
bytes calldata _srcAddress,
address _dstAddress,
uint64 _nonce,
uint, /*_gasLimit*/
bytes calldata _payload
) external override {
StoredPayload storage sp = storedPayload[_srcChainId][_srcAddress];
// assert and increment the nonce. no message shuffling
require(_nonce == ++inboundNonce[_srcChainId][_srcAddress], "LayerZero: wrong nonce");
// queue the following msgs inside of a stack to simulate a successful send on src, but not fully delivered on dst
if (sp.payloadHash != bytes32(0)) {
QueuedPayload[] storage msgs = msgsToDeliver[_srcChainId][_srcAddress];
QueuedPayload memory newMsg = QueuedPayload(_dstAddress, _nonce, _payload);
// warning, might run into gas issues trying to forward through a bunch of queued msgs
// shift all the msgs over so we can treat this like a fifo via array.pop()
if (msgs.length > 0) {
// extend the array
msgs.push(newMsg);
// shift all the indexes up for pop()
for (uint i = 0; i < msgs.length - 1; i++) {
msgs[i + 1] = msgs[i];
}
// put the newMsg at the bottom of the stack
msgs[0] = newMsg;
} else {
msgs.push(newMsg);
}
} else if (nextMsgBLocked) {
storedPayload[_srcChainId][_srcAddress] = StoredPayload(uint64(_payload.length), _dstAddress, keccak256(_payload));
emit PayloadStored(_srcChainId, _srcAddress, _dstAddress, _nonce, _payload, bytes(""));
// ensure the next msgs that go through are no longer blocked
nextMsgBLocked = false;
} else {
// we ignore the gas limit because this call is made in one tx due to being "same chain"
// ILayerZeroReceiver(_dstAddress).lzReceive{gas: _gasLimit}(_srcChainId, _srcAddress, _nonce, _payload); // invoke lzReceive
ILayerZeroReceiver(_dstAddress).lzReceive(_srcChainId, _srcAddress, _nonce, _payload); // invoke lzReceive
}
}
// used to simulate messages received get stored as a payload
function blockNextMsg() external {
nextMsgBLocked = true;
}
function getLengthOfQueue(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint) {
return msgsToDeliver[_srcChainId][_srcAddress].length;
}
// @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, address, bytes memory _payload, bool, bytes memory) external view override returns (uint _nativeFee, uint _zroFee) {
_nativeFee = nativeFee * _payload.length;
_zroFee = zroFee;
}
// give 20 bytes, return the decoded address
function packedBytesToAddr(bytes calldata _b) public pure returns (address) {
address addr;
assembly {
let ptr := mload(0x40)
calldatacopy(ptr, sub(_b.offset, 2), add(_b.length, 2))
addr := mload(sub(ptr, 10))
}
return addr;
}
// given an address, return the 20 bytes
function addrToPackedBytes(address _a) public pure returns (bytes memory) {
bytes memory data = abi.encodePacked(_a);
return data;
}
function setConfig(
uint16, /*_version*/
uint16, /*_chainId*/
uint, /*_configType*/
bytes memory /*_config*/
) external override {}
function getConfig(
uint16, /*_version*/
uint16, /*_chainId*/
address, /*_ua*/
uint /*_configType*/
) external pure override returns (bytes memory) {
return "";
}
function setSendVersion(
uint16 /*version*/
) external override {}
function setReceiveVersion(
uint16 /*version*/
) external override {}
function getSendVersion(
address /*_userApplication*/
) external pure override returns (uint16) {
return 1;
}
function getReceiveVersion(
address /*_userApplication*/
) external pure override returns (uint16) {
return 1;
}
function getInboundNonce(uint16 _chainID, bytes calldata _srcAddress) external view override returns (uint64) {
return inboundNonce[_chainID][_srcAddress];
}
function getOutboundNonce(uint16 _chainID, address _srcAddress) external view override returns (uint64) {
return outboundNonce[_chainID][_srcAddress];
}
// simulates the relayer pushing through the rest of the msgs that got delayed due to the stored payload
function _clearMsgQue(uint16 _srcChainId, bytes calldata _srcAddress) internal {
QueuedPayload[] storage msgs = msgsToDeliver[_srcChainId][_srcAddress];
// warning, might run into gas issues trying to forward through a bunch of queued msgs
while (msgs.length > 0) {
QueuedPayload memory payload = msgs[msgs.length - 1];
ILayerZeroReceiver(payload.dstAddress).lzReceive(_srcChainId, _srcAddress, payload.nonce, payload.payload);
msgs.pop();
}
}
function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override {
StoredPayload storage sp = storedPayload[_srcChainId][_srcAddress];
// revert if no messages are cached. safeguard malicious UA behaviour
require(sp.payloadHash != bytes32(0), "LayerZero: no stored payload");
require(sp.dstAddress == msg.sender, "LayerZero: invalid caller");
// empty the storedPayload
sp.payloadLength = 0;
sp.dstAddress = address(0);
sp.payloadHash = bytes32(0);
emit UaForceResumeReceive(_srcChainId, _srcAddress);
// resume the receiving of msgs after we force clear the "stuck" msg
_clearMsgQue(_srcChainId, _srcAddress);
}
function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external override {
StoredPayload storage sp = storedPayload[_srcChainId][_srcAddress];
require(sp.payloadHash != bytes32(0), "LayerZero: no stored payload");
require(_payload.length == sp.payloadLength && keccak256(_payload) == sp.payloadHash, "LayerZero: invalid payload");
address dstAddress = sp.dstAddress;
// empty the storedPayload
sp.payloadLength = 0;
sp.dstAddress = address(0);
sp.payloadHash = bytes32(0);
uint64 nonce = inboundNonce[_srcChainId][_srcAddress];
ILayerZeroReceiver(dstAddress).lzReceive(_srcChainId, _srcAddress, nonce, _payload);
emit PayloadCleared(_srcChainId, _srcAddress, nonce, dstAddress);
}
function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view override returns (bool) {
StoredPayload storage sp = storedPayload[_srcChainId][_srcAddress];
return sp.payloadHash != bytes32(0);
}
function isSendingPayload() external pure override returns (bool) {
return false;
}
function isReceivingPayload() external pure override returns (bool) {
return false;
}
function getSendLibraryAddress(address) external view override returns (address) {
return address(this);
}
function getReceiveLibraryAddress(address) external view override returns (address) {
return address(this);
}
}
// File contracts/mocks/ONFT721Mock.sol
pragma solidity ^0.8;
contract ONFT721Mock is ONFT721 {
constructor(string memory _name, string memory _symbol, address _layerZeroEndpoint) ONFT721(_name, _symbol, _layerZeroEndpoint) {}
function mint(address _tokenOwner, uint _newId) external payable {
_safeMint(_tokenOwner, _newId);
}
}
// File @openzeppelin/contracts/token/ERC20/extensions/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/ERC20Capped.sol)
pragma solidity ^0.8.0;
/**
* @dev Extension of {ERC20} that adds a cap to the supply of tokens.
*/
abstract contract ERC20Capped is ERC20 {
uint256 private immutable _cap;
/**
* @dev Sets the value of the `cap`. This value is immutable, it can only be
* set once during construction.
*/
constructor(uint256 cap_) {
require(cap_ > 0, "ERC20Capped: cap is 0");
_cap = cap_;
}
/**
* @dev Returns the cap on the token's total supply.
*/
function cap() public view virtual returns (uint256) {
return _cap;
}
/**
* @dev See {ERC20-_mint}.
*/
function _mint(address account, uint256 amount) internal virtual override {
require(ERC20.totalSupply() + amount <= cap(), "ERC20Capped: cap exceeded");
super._mint(account, amount);
}
}
// File contracts/token/oft/extension/GlobalCappedOFT.sol
pragma solidity ^0.8.0;
/**
* @dev Extension of {OFT} that adds a global cap to the supply of tokens across all chains.
*/
contract GlobalCappedOFT is BasedOFT, ERC20Capped {
constructor(string memory _name, string memory _symbol, uint _cap, address _lzEndpoint) BasedOFT(_name, _symbol, _lzEndpoint) ERC20Capped(_cap) {}
function _mint(address account, uint amount) internal virtual override(ERC20, ERC20Capped) {
ERC20Capped._mint(account, amount);
}
}
// File contracts/token/oft/extension/PausableOFT.sol
pragma solidity ^0.8.0;
// allow OFT to pause all cross-chain transactions
contract PausableOFT is OFT, Pausable {
constructor(string memory _name, string memory _symbol, address _lzEndpoint) OFT(_name, _symbol, _lzEndpoint) {}
function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _amount) internal virtual override whenNotPaused {
super._debitFrom(_from, _dstChainId, _toAddress, _amount);
}
function pauseSendTokens(bool pause) external onlyOwner {
pause ? _pause() : _unpause();
}
}
// File @openzeppelin/contracts/token/ERC20/utils/[email protected]
// OpenZeppelin Contracts v4.4.1 (token/ERC20/utils/SafeERC20.sol)
pragma solidity ^0.8.0;
/**
* @title SafeERC20
* @dev Wrappers around ERC20 operations that throw on failure (when the token
* contract returns false). Tokens that return no value (and instead revert or
* throw on failure) are also supported, non-reverting calls are assumed to be
* successful.
* To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
* which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
*/
library SafeERC20 {
using Address for address;
function safeTransfer(
IERC20 token,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
}
function safeTransferFrom(
IERC20 token,
address from,
address to,
uint256 value
) internal {
_callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
}
/**
* @dev Deprecated. This function has issues similar to the ones found in
* {IERC20-approve}, and its usage is discouraged.
*
* Whenever possible, use {safeIncreaseAllowance} and
* {safeDecreaseAllowance} instead.
*/
function safeApprove(
IERC20 token,
address spender,
uint256 value
) internal {
// safeApprove should only be called when setting an initial allowance,
// or when resetting it to zero. To increase and decrease it, use
// 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
require(
(value == 0) || (token.allowance(address(this), spender) == 0),
"SafeERC20: approve from non-zero to non-zero allowance"
);
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
}
function safeIncreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
uint256 newAllowance = token.allowance(address(this), spender) + value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
function safeDecreaseAllowance(
IERC20 token,
address spender,
uint256 value
) internal {
unchecked {
uint256 oldAllowance = token.allowance(address(this), spender);
require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
uint256 newAllowance = oldAllowance - value;
_callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
}
}
/**
* @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
* on the return value: the return value is optional (but if data is returned, it must not be false).
* @param token The token targeted by the call.
* @param data The call data (encoded using abi.encode or one of its variants).
*/
function _callOptionalReturn(IERC20 token, bytes memory data) private {
// We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
// we're implementing it ourselves. We use {Address.functionCall} to perform this call, which verifies that
// the target address contains contract code and also asserts for success in the low-level call.
bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
if (returndata.length > 0) {
// Return data is optional
require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
}
}
}
// File contracts/token/oft/extension/ProxyOFT.sol
pragma solidity ^0.8.0;
contract ProxyOFT is OFTCore {
using SafeERC20 for IERC20;
IERC20 public immutable token;
constructor(address _lzEndpoint, address _proxyToken) OFTCore(_lzEndpoint) {
token = IERC20(_proxyToken);
}
function circulatingSupply() public view virtual override returns (uint) {
unchecked {
return token.totalSupply() - token.balanceOf(address(this));
}
}
function _debitFrom(address _from, uint16, bytes memory, uint _amount) internal virtual override {
require(_from == _msgSender(), "ProxyOFT: owner is not send caller");
token.safeTransferFrom(_from, address(this), _amount);
}
function _creditTo(uint16, address _toAddress, uint _amount) internal virtual override {
token.safeTransfer(_toAddress, _amount);
}
}
// File contracts/token/onft/IONFT1155Core.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ONFT Core standard
*/
interface IONFT1155Core is IERC165 {
event SendToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint _tokenId, uint _amount, uint64 _nonce);
event SendBatchToChain(address indexed _sender, uint16 indexed _dstChainId, bytes indexed _toAddress, uint[] _tokenIds, uint[] _amounts, uint64 _nonce);
event ReceiveFromChain(uint16 indexed _srcChainId, bytes indexed _srcAddress, address indexed _toAddress, uint _tokenId, uint _amount, uint64 _nonce);
event ReceiveBatchFromChain(uint16 indexed _srcChainId, bytes indexed _srcAddress, address indexed _toAddress, uint[] _tokenIds, uint[] _amounts, uint64 _nonce);
// _from - address where tokens should be deducted from on behalf of
// _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
// _amount - amount of the tokens to transfer
// _refundAddress - address on src that will receive refund for any overpayment of L0 fees
// _zroPaymentAddress - if paying in zro, pass the address to use. using 0x0 indicates not paying fees in zro
// _adapterParams - flexible bytes array to indicate messaging adapter services in L0
function sendFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint _tokenId, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;
// _from - address where tokens should be deducted from on behalf of
// _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
// _amounts - amounts of the tokens to transfer
// _refundAddress - address on src that will receive refund for any overpayment of L0 fees
// _zroPaymentAddress - if paying in zro, pass the address to use. using 0x0 indicates not paying fees in zro
// _adapterParams - flexible bytes array to indicate messaging adapter services in L0
function sendBatchFrom(address _from, uint16 _dstChainId, bytes calldata _toAddress, uint[] calldata _tokenIds, uint[] calldata _amounts, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;
// _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
// _amount - amount of the tokens 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, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);
// _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 - tokens Id to transfer
// _amounts - amounts of the tokens 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, uint[] calldata _amounts, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);
}
// File contracts/token/onft/ONFT1155Core.sol
pragma solidity ^0.8.0;
abstract contract ONFT1155Core is NonblockingLzApp, ERC165, IONFT1155Core {
constructor(address _lzEndpoint) NonblockingLzApp(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(ERC165, IERC165) returns (bool) {
return interfaceId == type(IONFT1155Core).interfaceId || super.supportsInterface(interfaceId);
}
function estimateSendFee(uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, uint _amount, bool _useZro, bytes memory _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) {
return estimateSendBatchFee(_dstChainId, _toAddress, _toSingletonArray(_tokenId), _toSingletonArray(_amount), _useZro, _adapterParams);
}
function estimateSendBatchFee(uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, uint[] memory _amounts, bool _useZro, bytes memory _adapterParams) public view virtual override returns (uint nativeFee, uint zroFee) {
bytes memory payload = abi.encode(_toAddress, _tokenIds, _amounts);
return lzEndpoint.estimateFees(_dstChainId, address(this), payload, _useZro, _adapterParams);
}
function sendFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint _tokenId, uint _amount, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) public payable virtual override {
_sendBatch(_from, _dstChainId, _toAddress, _toSingletonArray(_tokenId), _toSingletonArray(_amount), _refundAddress, _zroPaymentAddress, _adapterParams);
}
function sendBatchFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, uint[] memory _amounts, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) public payable virtual override {
_sendBatch(_from, _dstChainId, _toAddress, _tokenIds, _amounts, _refundAddress, _zroPaymentAddress, _adapterParams);
}
function _sendBatch(address _from, uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, uint[] memory _amounts, address payable _refundAddress, address _zroPaymentAddress, bytes memory _adapterParams) internal virtual {
_debitFrom(_from, _dstChainId, _toAddress, _tokenIds, _amounts);
bytes memory payload = abi.encode(_toAddress, _tokenIds, _amounts);
_lzSend(_dstChainId, payload, _refundAddress, _zroPaymentAddress, _adapterParams);
uint64 nonce = lzEndpoint.getOutboundNonce(_dstChainId, address(this));
if (_tokenIds.length == 1) {
emit SendToChain(_from, _dstChainId, _toAddress, _tokenIds[0], _amounts[0], nonce);
} else if (_tokenIds.length > 1) {
emit SendBatchToChain(_from, _dstChainId, _toAddress, _tokenIds, _amounts, nonce);
}
}
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, uint[] memory amounts) = abi.decode(_payload, (bytes, uint[], uint[]));
address toAddress;
assembly {
toAddress := mload(add(toAddressBytes, 20))
}
_creditTo(_srcChainId, toAddress, tokenIds, amounts);
if (tokenIds.length == 1) {
emit ReceiveFromChain(_srcChainId, _srcAddress, toAddress, tokenIds[0], amounts[0], _nonce);
} else if (tokenIds.length > 1) {
emit ReceiveBatchFromChain(_srcChainId, _srcAddress, toAddress, tokenIds, amounts, _nonce);
}
}
function _debitFrom(address _from, uint16 _dstChainId, bytes memory _toAddress, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual;
function _creditTo(uint16 _srcChainId, address _toAddress, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual;
function _toSingletonArray(uint element) internal pure returns (uint[] memory) {
uint[] memory array = new uint[](1);
array[0] = element;
return array;
}
}
// File @openzeppelin/contracts/utils/introspection/[email protected]
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165Checker.sol)
pragma solidity ^0.8.0;
/**
* @dev Library used to query support of an interface declared via {IERC165}.
*
* Note that these functions return the actual result of the query: they do not
* `revert` if an interface is not supported. It is up to the caller to decide
* what to do in these cases.
*/
library ERC165Checker {
// As per the EIP-165 spec, no interface should ever match 0xffffffff
bytes4 private constant _INTERFACE_ID_INVALID = 0xffffffff;
/**
* @dev Returns true if `account` supports the {IERC165} interface,
*/
function supportsERC165(address account) internal view returns (bool) {
// Any contract that implements ERC165 must explicitly indicate support of
// InterfaceId_ERC165 and explicitly indicate non-support of InterfaceId_Invalid
return
_supportsERC165Interface(account, type(IERC165).interfaceId) &&
!_supportsERC165Interface(account, _INTERFACE_ID_INVALID);
}
/**
* @dev Returns true if `account` supports the interface defined by
* `interfaceId`. Support for {IERC165} itself is queried automatically.
*
* See {IERC165-supportsInterface}.
*/
function supportsInterface(address account, bytes4 interfaceId) internal view returns (bool) {
// query support of both ERC165 as per the spec and support of _interfaceId
return supportsERC165(account) && _supportsERC165Interface(account, interfaceId);
}
/**
* @dev Returns a boolean array where each value corresponds to the
* interfaces passed in and whether they're supported or not. This allows
* you to batch check interfaces for a contract where your expectation
* is that some interfaces may not be supported.
*
* See {IERC165-supportsInterface}.
*
* _Available since v3.4._
*/
function getSupportedInterfaces(address account, bytes4[] memory interfaceIds)
internal
view
returns (bool[] memory)
{
// an array of booleans corresponding to interfaceIds and whether they're supported or not
bool[] memory interfaceIdsSupported = new bool[](interfaceIds.length);
// query support of ERC165 itself
if (supportsERC165(account)) {
// query support of each interface in interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
interfaceIdsSupported[i] = _supportsERC165Interface(account, interfaceIds[i]);
}
}
return interfaceIdsSupported;
}
/**
* @dev Returns true if `account` supports all the interfaces defined in
* `interfaceIds`. Support for {IERC165} itself is queried automatically.
*
* Batch-querying can lead to gas savings by skipping repeated checks for
* {IERC165} support.
*
* See {IERC165-supportsInterface}.
*/
function supportsAllInterfaces(address account, bytes4[] memory interfaceIds) internal view returns (bool) {
// query support of ERC165 itself
if (!supportsERC165(account)) {
return false;
}
// query support of each interface in _interfaceIds
for (uint256 i = 0; i < interfaceIds.length; i++) {
if (!_supportsERC165Interface(account, interfaceIds[i])) {
return false;
}
}
// all interfaces supported
return true;
}
/**
* @notice Query if a contract implements an interface, does not check ERC165 support
* @param account The address of the contract to query for support of an interface
* @param interfaceId The interface identifier, as specified in ERC-165
* @return true if the contract at account indicates support of the interface with
* identifier interfaceId, false otherwise
* @dev Assumes that account contains a contract that supports ERC165, otherwise
* the behavior of this method is undefined. This precondition can be checked
* with {supportsERC165}.
* Interface identification is specified in ERC-165.
*/
function _supportsERC165Interface(address account, bytes4 interfaceId) private view returns (bool) {
bytes memory encodedParams = abi.encodeWithSelector(IERC165.supportsInterface.selector, interfaceId);
(bool success, bytes memory result) = account.staticcall{gas: 30000}(encodedParams);
if (result.length < 32) return false;
return success && abi.decode(result, (bool));
}
}
// File contracts/token/onft/extension/ProxyONFT1155.sol
pragma solidity ^0.8.0;
contract ProxyONFT1155 is ONFT1155Core, IERC1155Receiver {
using ERC165Checker for address;
IERC1155 public immutable token;
constructor(address _lzEndpoint, address _proxyToken) ONFT1155Core(_lzEndpoint) {
require(_proxyToken.supportsInterface(type(IERC1155).interfaceId), "ProxyONFT1155: invalid ERC1155 token");
token = IERC1155(_proxyToken);
}
function supportsInterface(bytes4 interfaceId) public view virtual override(ONFT1155Core, IERC165) returns (bool) {
return interfaceId == type(IERC1155Receiver).interfaceId || super.supportsInterface(interfaceId);
}
function _debitFrom(address _from, uint16, bytes memory, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual override {
require(_from == _msgSender(), "ProxyONFT1155: owner is not send caller");
token.safeBatchTransferFrom(_from, address(this), _tokenIds, _amounts, "");
}
function _creditTo(uint16, address _toAddress, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual override {
token.safeBatchTransferFrom(address(this), _toAddress, _tokenIds, _amounts, "");
}
function onERC1155Received(address _operator, address, uint, uint, bytes memory) public virtual override returns (bytes4) {
// only allow `this` to tranfser token from others
if (_operator != address(this)) return bytes4(0);
return this.onERC1155Received.selector;
}
function onERC1155BatchReceived(address _operator, address, uint[] memory, uint[] memory, bytes memory) public virtual override returns (bytes4) {
// only allow `this` to tranfser token from others
if (_operator != address(this)) return bytes4(0);
return this.onERC1155BatchReceived.selector;
}
}
// File contracts/token/onft/extension/ProxyONFT721.sol
pragma solidity ^0.8.0;
contract ProxyONFT721 is ONFT721Core, IERC721Receiver {
using ERC165Checker for address;
IERC721 public immutable token;
constructor(address _lzEndpoint, address _proxyToken) ONFT721Core(_lzEndpoint) {
require(_proxyToken.supportsInterface(type(IERC721).interfaceId), "ProxyONFT721: invalid ERC721 token");
token = IERC721(_proxyToken);
}
function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
return interfaceId == type(IERC721Receiver).interfaceId || super.supportsInterface(interfaceId);
}
function _debitFrom(address _from, uint16, bytes memory, uint _tokenId) internal virtual override {
require(_from == _msgSender(), "ProxyONFT721: owner is not send caller");
token.safeTransferFrom(_from, address(this), _tokenId);
}
function _creditTo(uint16, address _toAddress, uint _tokenId) internal virtual override {
token.safeTransferFrom(address(this), _toAddress, _tokenId);
}
function onERC721Received(address _operator, address, uint, bytes memory) public virtual override returns (bytes4) {
// only allow `this` to tranfser token from others
if (_operator != address(this)) return bytes4(0);
return IERC721Receiver.onERC721Received.selector;
}
}
// File contracts/token/onft/IONFT1155.sol
pragma solidity ^0.8.0;
/**
* @dev Interface of the ONFT standard
*/
interface IONFT1155 is IONFT1155Core, IERC1155 {
}
// File contracts/token/onft/ONFT1155.sol
pragma solidity ^0.8.0;
// NOTE: this ONFT contract has no public minting logic.
// must implement your own minting logic in child classes
contract ONFT1155 is ONFT1155Core, ERC1155, IONFT1155 {
constructor(string memory _uri, address _lzEndpoint) ERC1155(_uri) ONFT1155Core(_lzEndpoint) {}
function supportsInterface(bytes4 interfaceId) public view virtual override(ONFT1155Core, ERC1155, IERC165) returns (bool) {
return interfaceId == type(IONFT1155).interfaceId || super.supportsInterface(interfaceId);
}
function _debitFrom(address _from, uint16, bytes memory, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual override {
address spender = _msgSender();
require(spender == _from || isApprovedForAll(_from, spender), "ONFT1155: send caller is not owner nor approved");
_burnBatch(_from, _tokenIds, _amounts);
}
function _creditTo(uint16, address _toAddress, uint[] memory _tokenIds, uint[] memory _amounts) internal virtual override {
_mintBatch(_toAddress, _tokenIds, _amounts, "");
}
}Contract Security Audit
- No Contract Security Audit Submitted- Submit Audit Here
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internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address 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payable","name":"_refundAddress","type":"address"},{"internalType":"address","name":"_zroPaymentAddress","type":"address"},{"internalType":"bytes","name":"_adapterParams","type":"bytes"}],"name":"sendFrom","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"operator","type":"address"},{"internalType":"bool","name":"approved","type":"bool"}],"name":"setApprovalForAll","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"URI","type":"string"}],"name":"setBaseURI","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"},{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint256","name":"_configType","type":"uint256"},{"internalType":"bytes","name":"_config","type":"bytes"}],"name":"setConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"value","type":"uint256"}],"name":"setFreeMint","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setReceiveVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setSendVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"}],"name":"setTrustedRemote","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"symbol","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"tokenURI","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"from","type":"address"},{"internalType":"address","name":"to","type":"address"},{"internalType":"uint256","name":"tokenId","type":"uint256"}],"name":"transferFrom","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"trustedRemoteLookup","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"}]Contract Creation Code
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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)
00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675000000000000000000000000000000000000000000000000000000000000000100000000000000000000000000000000000000000000000000000000000003e8
-----Decoded View---------------
Arg [0] : _layerZeroEndpoint (address): 0x66A71Dcef29A0fFBDBE3c6a460a3B5BC225Cd675
Arg [1] : _startMintId (uint256): 1
Arg [2] : _endMintId (uint256): 1000
-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [2] : 00000000000000000000000000000000000000000000000000000000000003e8
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Swarm Source
ipfs://6da7989851680f7bfe6bb3ace95a126f1d79059f33ac005f32cba64d60a3aa70
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