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pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT



import "./ILayerZeroReceiver.sol";
import "./ILayerZeroEndpoint.sol";
import "./ILayerZeroUserApplicationConfig.sol";
import "./LayerZeroStorage.sol";
import "../zksync/ReentrancyGuard.sol";
import "../interfaces/ISyncService.sol";

/// @title LayerZero bridge implementation of non-blocking model
/// @dev if message is blocking we should call `retryPayload` of endpoint to retry
/// the reasons for message blocking may be:
/// * `_dstAddress` is not deployed to dst chain, and we can deploy LayerZeroBridge to dst chain to fix it.
/// * lzReceive cost more gas than `_gasLimit` that endpoint send, and user should call `retryMessage` to fix it.
/// * lzReceive reverted unexpected, and we can fix bug and deploy a new contract to fix it.
/// @author zk.link
contract LayerZeroBridge is ReentrancyGuard, LayerZeroStorage, ISyncService, ILayerZeroReceiver, ILayerZeroUserApplicationConfig {
    modifier onlyEndpoint {
        require(msg.sender == address(endpoint), "Require endpoint");
        _;
    }

    modifier onlyGovernor {
        require(msg.sender == zklink.networkGovernor(), "Caller is not governor");
        _;
    }

    modifier onlyZkLink {
        require(msg.sender == address(zklink), "Caller is not zkLink");
        _;
    }

    /// @param _zklink The zklink contract address
    /// @param _endpoint The LayerZero endpoint
    constructor(IZkLink _zklink, ILayerZeroEndpoint _endpoint) {
        initializeReentrancyGuard();

        zklink = _zklink;
        endpoint = _endpoint;
    }

    //---------------------------UserApplication config----------------------------------------
    function setConfig(uint16 _version, uint16 _chainId, uint _configType, bytes calldata _config) external override onlyGovernor {
        endpoint.setConfig(_version, _chainId, _configType, _config);
    }

    function setSendVersion(uint16 _version) external override onlyGovernor {
        endpoint.setSendVersion(_version);
    }

    function setReceiveVersion(uint16 _version) external override onlyGovernor {
        endpoint.setReceiveVersion(_version);
    }

    function forceResumeReceive(uint16 _srcChainId, bytes calldata _srcAddress) external override onlyGovernor {
        endpoint.forceResumeReceive(_srcChainId, _srcAddress);
    }

    /// @notice Set bridge destination
    /// @param zkLinkChainId zkLink chain id
    /// @param lzChainId LayerZero chain id
    /// @param contractAddr LayerZeroBridge contract address on other chains
    function setDestination(uint8 zkLinkChainId, uint16 lzChainId, bytes calldata contractAddr) external onlyGovernor {
        zkLinkChainIdToLZChainId[zkLinkChainId] = lzChainId;
        lzChainIdToZKLinkChainId[lzChainId] = zkLinkChainId;
        destinations[lzChainId] = contractAddr;
        emit UpdateDestination(zkLinkChainId, lzChainId, contractAddr);
    }

    function estimateSendSyncHashFee(bytes32 syncHash) external view returns (uint nativeFee) {
        uint16 dstChainId = zkLinkChainIdToLZChainId[MASTER_CHAIN_ID];
        checkDstChainId(dstChainId);
        bytes memory payload = buildSyncHashPayload(syncHash);
        (nativeFee, ) = endpoint.estimateFees(dstChainId, address(this), payload, false, new bytes(0));
    }

    function sendSyncHash(bytes32 syncHash) external override onlyZkLink payable {
        // ===Checks===
        // send msg to master chain
        uint16 dstChainId = zkLinkChainIdToLZChainId[MASTER_CHAIN_ID];
        bytes memory trustedRemote = checkDstChainId(dstChainId);

        // ===Interactions===
        // send LayerZero message
        bytes memory path = abi.encodePacked(trustedRemote, address(this));
        bytes memory payload = buildSyncHashPayload(syncHash);
        // solhint-disable-next-line check-send-result
        endpoint.send{value:msg.value}(dstChainId, path, payload, payable(tx.origin), address(0), new bytes(0));
    }

    function buildSyncHashPayload(bytes32 syncHash) internal pure returns (bytes memory payload) {
        payload = abi.encode(syncHash);
    }

    function estimateConfirmBlockFee(uint8 destZkLinkChainId, uint32 blockNumber) external view returns (uint nativeFee) {
        uint16 dstChainId = zkLinkChainIdToLZChainId[destZkLinkChainId];
        checkDstChainId(dstChainId);
        bytes memory payload = buildConfirmPayload(blockNumber);
        (nativeFee, ) = endpoint.estimateFees(dstChainId, address(this), payload, false, new bytes(0));
    }

    function confirmBlock(uint8 destZkLinkChainId, uint32 blockNumber) external override onlyZkLink payable {
        // ===Checks===
        uint16 dstChainId = zkLinkChainIdToLZChainId[destZkLinkChainId];
        bytes memory trustedRemote = checkDstChainId(dstChainId);

        // ===Interactions===
        // send LayerZero message
        bytes memory path = abi.encodePacked(trustedRemote, address(this));
        bytes memory payload = buildConfirmPayload(blockNumber);
        // solhint-disable-next-line check-send-result
        endpoint.send{value:msg.value}(dstChainId, path, payload, payable(tx.origin), address(0), new bytes(0));
    }

    function buildConfirmPayload(uint32 blockNumber) internal pure returns (bytes memory payload) {
        payload = abi.encode(blockNumber);
    }

    function _nonblockingLzReceive(uint16 srcChainId, bytes calldata /**srcAddress**/, uint64 /**nonce**/, bytes calldata payload) internal {
        // unpack payload
        uint8 zkLinkChainId = lzChainIdToZKLinkChainId[srcChainId];
        require(zkLinkChainId > 0, "zkLink chain id not config");
        if (CHAIN_ID == MASTER_CHAIN_ID) {
            bytes32 syncHash = abi.decode(payload, (bytes32));
            zklink.receiveSyncHash(zkLinkChainId, syncHash);
        } else {
            uint32 blockNumber = abi.decode(payload, (uint32));
            zklink.receiveBlockConfirmation(blockNumber);
        }
    }

    /// @notice Receive the bytes payload from the source chain via LayerZero
    /// @dev lzReceive can only be called by endpoint
    /// @dev srcPath(in UltraLightNodeV2) = abi.encodePacked(srcAddress, dstAddress);
    function lzReceive(uint16 srcChainId, bytes calldata srcPath, uint64 nonce, bytes calldata payload) external override onlyEndpoint nonReentrant {
        // reject invalid src contract address
        bytes memory srcAddress = destinations[srcChainId];
        bytes memory path = abi.encodePacked(srcAddress, address(this));
        require(keccak256(path) == keccak256(srcPath), "Invalid src");

        // try-catch all errors/exceptions
        // solhint-disable-next-line no-empty-blocks
        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 calldata srcAddress, uint64 nonce, bytes calldata payload) public {
        // only internal transaction
        require(msg.sender == address(this), "Caller must be this bridge");
        _nonblockingLzReceive(srcChainId, srcAddress, nonce, payload);
    }

    /// @notice Retry the failed message, payload hash must be exist
    function retryMessage(uint16 srcChainId, bytes calldata srcAddress, uint64 nonce, bytes calldata payload) external payable virtual nonReentrant {
        // assert there is message to retry
        bytes32 payloadHash = failedMessages[srcChainId][srcAddress][nonce];
        require(payloadHash != bytes32(0), "No stored message");
        require(keccak256(payload) == payloadHash, "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);
    }

    function checkDstChainId(uint16 dstChainId) internal view returns (bytes memory trustedRemote) {
        trustedRemote = destinations[dstChainId];
        require(trustedRemote.length > 0, "Trust remote not exist");
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 standard as defined in the EIP.
 */
interface IERC20 {
    /**
     * @dev Emitted when `value` tokens are moved from one account (`from`) to
     * another (`to`).
     *
     * Note that `value` may be zero.
     */
    event Transfer(address indexed from, address indexed to, uint256 value);

    /**
     * @dev Emitted when the allowance of a `spender` for an `owner` is set by
     * a call to {approve}. `value` is the new allowance.
     */
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /**
     * @dev Returns the 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);
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT



import "./ILayerZeroUserApplicationConfig.sol";

interface ILayerZeroEndpoint is ILayerZeroUserApplicationConfig {
    // @notice send a LayerZero message to the specified address at a LayerZero endpoint.
    // @param _dstChainId - the destination chain identifier
    // @param _destination - the address on destination chain (in bytes). address length/format may vary by chains
    // @param _payload - a custom bytes payload to send to the destination contract
    // @param _refundAddress - if the source transaction is cheaper than the amount of value passed, refund the additional amount to this address
    // @param _zroPaymentAddress - the address of the ZRO token holder who would pay for the transaction
    // @param _adapterParams - parameters for custom functionality. e.g. receive airdropped native gas from the relayer on destination
    function send(uint16 _dstChainId, bytes calldata _destination, bytes calldata _payload, address payable _refundAddress, address _zroPaymentAddress, bytes calldata _adapterParams) external payable;

    // @notice used by the messaging library to publish verified payload
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source contract (as bytes) at the source chain
    // @param _dstAddress - the address on destination chain
    // @param _nonce - the unbound message ordering nonce
    // @param _gasLimit - the gas limit for external contract execution
    // @param _payload - verified payload to send to the destination contract
    function receivePayload(uint16 _srcChainId, bytes calldata _srcAddress, address _dstAddress, uint64 _nonce, uint _gasLimit, bytes calldata _payload) external;

    // @notice get the inboundNonce of a lzApp from a source chain which could be EVM or non-EVM chain
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function getInboundNonce(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (uint64);

    // @notice get the outboundNonce from this source chain which, consequently, is always an EVM
    // @param _srcAddress - the source chain contract address
    function getOutboundNonce(uint16 _dstChainId, address _srcAddress) external view returns (uint64);

    // @notice gets a quote in source native gas, for the amount that send() requires to pay for message delivery
    // @param _dstChainId - the destination chain identifier
    // @param _userApplication - the user app address on this EVM chain
    // @param _payload - the custom message to send over LayerZero
    // @param _payInZRO - if false, user app pays the protocol fee in native token
    // @param _adapterParam - parameters for the adapter service, e.g. send some dust native token to dstChain
    function estimateFees(uint16 _dstChainId, address _userApplication, bytes calldata _payload, bool _payInZRO, bytes calldata _adapterParam) external view returns (uint nativeFee, uint zroFee);

    // @notice get this Endpoint's immutable source identifier
    function getChainId() external view returns (uint16);

    // @notice the interface to retry failed message on this Endpoint destination
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    // @param _payload - the payload to be retried
    function retryPayload(uint16 _srcChainId, bytes calldata _srcAddress, bytes calldata _payload) external;

    // @notice query if any STORED payload (message blocking) at the endpoint.
    // @param _srcChainId - the source chain identifier
    // @param _srcAddress - the source chain contract address
    function hasStoredPayload(uint16 _srcChainId, bytes calldata _srcAddress) external view returns (bool);

    // @notice query if the _libraryAddress is valid for sending msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getSendLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the _libraryAddress is valid for receiving msgs.
    // @param _userApplication - the user app address on this EVM chain
    function getReceiveLibraryAddress(address _userApplication) external view returns (address);

    // @notice query if the non-reentrancy guard for send() is on
    // @return true if the guard is on. false otherwise
    function isSendingPayload() external view returns (bool);

    // @notice query if the non-reentrancy guard for receive() is on
    // @return true if the guard is on. false otherwise
    function isReceivingPayload() external view returns (bool);

    // @notice get the configuration of the LayerZero messaging library of the specified version
    // @param _version - messaging library version
    // @param _chainId - the chainId for the pending config change
    // @param _userApplication - the contract address of the user application
    // @param _configType - type of configuration. every messaging library has its own convention.
    function getConfig(uint16 _version, uint16 _chainId, address _userApplication, uint _configType) external view returns (bytes memory);

    // @notice get the send() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getSendVersion(address _userApplication) external view returns (uint16);

    // @notice get the lzReceive() LayerZero messaging library version
    // @param _userApplication - the contract address of the user application
    function getReceiveVersion(address _userApplication) external view returns (uint16);
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT



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;
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT



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;
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT



import "./ILayerZeroEndpoint.sol";
import "../interfaces/IZkLink.sol";
import {Config} from "../zksync/Config.sol";

/// @title LayerZero bridge storage
/// @author zk.link
/// @dev Do not initialize any variables of this contract
/// Do not break the alignment of contract storage
contract LayerZeroStorage is Config {
    /// @notice zklink contract address
    IZkLink public zklink;
    /// @notice LayerZero endpoint that used to send and receive message
    ILayerZeroEndpoint public endpoint;
    /// @notice zkLink chainId => lz chainId
    mapping(uint8 => uint16) public zkLinkChainIdToLZChainId;
    /// @notice lz chainId => zkLink chainId
    mapping(uint16 => uint8) public lzChainIdToZKLinkChainId;
    /// @notice bridge contract address on other chains
    mapping(uint16 => bytes) public destinations;
    /// @notice failed message of lz non-blocking model
    /// @dev the struct of failedMessages is (srcChainId => srcAddress => nonce => payloadHash)
    /// srcChainId is the id of message source chain
    /// srcAddress is the trust remote address on the source chain who send message
    /// nonce is inbound message nonce
    /// payLoadHash is the keccak256 of message payload
    mapping(uint16 => mapping(bytes => mapping(uint64 => bytes32))) public failedMessages;

    event UpdateDestination(uint8 zkLinkChainId, uint16 lzChainId, bytes destination);
    event MessageFailed(uint16 srcChainId, bytes srcAddress, uint64 nonce, bytes payload);
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT OR Apache-2.0



/// @title Sync service for sending cross chain message
/// @author zk.link
interface ISyncService {
    /// @notice Return the fee of sending sync hash to master chain
    /// @param syncHash the sync hash
    function estimateSendSyncHashFee(bytes32 syncHash) external view returns (uint nativeFee);

    /// @notice Send sync hash message to master chain
    /// @param syncHash the sync hash
    function sendSyncHash(bytes32 syncHash) external payable;

    /// @notice Estimate the fee of sending confirm block message to slaver chain
    /// @param destZkLinkChainId the destination chain id defined by zkLink
    /// @param blockNumber the height of stored block
    function estimateConfirmBlockFee(uint8 destZkLinkChainId, uint32 blockNumber) external view returns (uint nativeFee);

    /// @notice Send block confirmation message to slaver chains
    /// @param destZkLinkChainId the destination chain id defined by zkLink
    /// @param blockNumber the block height
    function confirmBlock(uint8 destZkLinkChainId, uint32 blockNumber) external payable;
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT OR Apache-2.0



import "@openzeppelin/contracts/token/ERC20/IERC20.sol";

/// @title ZkLink interface contract
/// @author zk.link
interface IZkLink {
    /// @notice Return the network governor
    function networkGovernor() external view returns (address);

    /// @notice Deposit ETH to Layer 2 - transfer ether from user into contract, validate it, register deposit
    function depositETH(bytes32 _zkLinkAddress, uint8 _subAccountId) external payable;

    /// @notice Deposit ERC20 token to Layer 2 - transfer ERC20 tokens from user into contract, validate it, register deposit
    function depositERC20(IERC20 _token, uint104 _amount, bytes32 _zkLinkAddress, uint8 _subAccountId, bool _mapping) external;

    /// @notice Receive block sync hash from slaver chain
    function receiveSyncHash(uint8 chainId, bytes32 syncHash) external;

    /// @notice Receive block confirmation from master chain
    function receiveBlockConfirmation(uint32 blockNumber) external;

    /// @notice Withdraw token to L1 for user by gateway
    /// @param owner User receive token on L1
    /// @param token Token address
    /// @param amount The amount(recovered decimals) of withdraw operation
    /// @param fastWithdrawFeeRate Fast withdraw fee rate taken by acceptor
    /// @param accountIdOfNonce Account that supply nonce, may be different from accountId
    /// @param subAccountIdOfNonce SubAccount that supply nonce
    /// @param nonce SubAccount nonce, used to produce unique accept info
    function withdrawToL1(address owner, address token, uint128 amount, uint16 fastWithdrawFeeRate, uint32 accountIdOfNonce, uint8 subAccountIdOfNonce, uint32 nonce) external payable;

    /// @notice  Withdraws tokens from zkLink contract to the owner
    /// @param _owner Address of the tokens owner
    /// @param _tokenId Token id
    /// @param _amount Amount to withdraw to request.
    /// @dev NOTE: We will call ERC20.transfer(.., _amount), but if according to internal logic of ERC20 token zkLink contract
    /// balance will be decreased by value more then _amount we will try to subtract this value from user pending balance
    function withdrawPendingBalance(address payable _owner, uint16 _tokenId, uint128 _amount) external;
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT OR Apache-2.0



/// @title zkSync configuration constants
/// @author Matter Labs
contract Config {
    /// @dev Default fee address in state
    address public constant DEFAULT_FEE_ADDRESS = 0x374632e7D48B7872d904524FdC5Dd4516F42cDFF;

    bytes32 internal constant EMPTY_STRING_KECCAK = 0xc5d2460186f7233c927e7db2dcc703c0e500b653ca82273b7bfad8045d85a470;

    /// @dev Bytes in one chunk
    uint8 internal constant CHUNK_BYTES = 23;

    /// @dev Bytes of L2 PubKey hash
    uint8 internal constant PUBKEY_HASH_BYTES = 20;

    /// @dev Max amount of tokens registered in the network
    uint16 internal constant MAX_AMOUNT_OF_REGISTERED_TOKENS = 65535;

    /// @dev Max account id that could be registered in the network
    uint32 internal constant MAX_ACCOUNT_ID = 16777215;

    /// @dev Max sub account id that could be bound to account id
    uint8 internal constant MAX_SUB_ACCOUNT_ID = 31;

    /// @dev Expected average period of block creation
    uint256 internal constant BLOCK_PERIOD = 12 seconds;

    /// @dev Operation chunks
    uint256 internal constant DEPOSIT_BYTES = 3 * CHUNK_BYTES;
    uint256 internal constant FULL_EXIT_BYTES = 3 * CHUNK_BYTES;
    uint256 internal constant WITHDRAW_BYTES = 5 * CHUNK_BYTES;
    uint256 internal constant FORCED_EXIT_BYTES = 3 * CHUNK_BYTES;
    uint256 internal constant CHANGE_PUBKEY_BYTES = 3 * CHUNK_BYTES;

    /// @dev Expiration delta for priority request to be satisfied (in seconds)
    /// @dev NOTE: Priority expiration should be > (EXPECT_VERIFICATION_IN * BLOCK_PERIOD)
    /// @dev otherwise incorrect block with priority op could not be reverted.
    uint256 internal constant PRIORITY_EXPIRATION_PERIOD = 14 days;

    /// @dev Expiration delta for priority request to be satisfied (in ETH blocks)
    uint256 internal constant PRIORITY_EXPIRATION =
        2592000;

    /// @dev Reserved time for users to send full exit priority operation in case of an upgrade (in seconds)
    uint256 internal constant MASS_FULL_EXIT_PERIOD = 5 days;

    /// @dev Reserved time for users to withdraw funds from full exit priority operation in case of an upgrade (in seconds)
    uint256 internal constant TIME_TO_WITHDRAW_FUNDS_FROM_FULL_EXIT = 2 days;

    /// @dev Notice period before activation preparation status of upgrade mode (in seconds)
    /// @dev NOTE: we must reserve for users enough time to send full exit operation, wait maximum time for processing this operation and withdraw funds from it.
    uint256 internal constant UPGRADE_NOTICE_PERIOD =
        0;

    /// @dev Max commitment produced in zk proof where highest 3 bits is 0
    uint256 internal constant MAX_PROOF_COMMITMENT = 0x1fffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

    /// @dev Bit mask to apply for verifier public input before verifying.
    uint256 internal constant INPUT_MASK = 14474011154664524427946373126085988481658748083205070504932198000989141204991;

    /// @dev Auth fact reset timelock
    uint256 internal constant AUTH_FACT_RESET_TIMELOCK = 1 days;

    /// @dev Max deposit of ERC20 token that is possible to deposit
    uint128 internal constant MAX_DEPOSIT_AMOUNT = 20282409603651670423947251286015;

    /// @dev Chain id defined by ZkLink
    uint8 public constant CHAIN_ID = 4;

    /// @dev Min chain id defined by ZkLink
    uint8 public constant MIN_CHAIN_ID = 1;

    /// @dev Max chain id defined by ZkLink
    uint8 public constant MAX_CHAIN_ID = 9;

    /// @dev All chain index, for example [1, 2, 3, 4] => 1 << 0 | 1 << 1 | 1 << 2 | 1 << 3 = 15
    uint256 public constant ALL_CHAINS = 268;

    /// @dev Master chain id defined by ZkLink
    uint8 public constant MASTER_CHAIN_ID = 9;

    /// @dev NONE, ORIGIN, NEXUS
    uint8 internal constant SYNC_TYPE = 1;
    uint8 internal constant SYNC_NONE = 0;
    uint8 internal constant SYNC_ORIGIN = 1;
    uint8 internal constant SYNC_NEXUS = 2;

    /// @dev Token decimals is a fixed value at layer two in ZkLink
    uint8 internal constant TOKEN_DECIMALS_OF_LAYER2 = 18;

    /// @dev The default fee account id
    uint32 internal constant DEFAULT_FEE_ACCOUNT_ID = 0;

    /// @dev Global asset account in the network
    /// @dev Can not deposit to or full exit this account
    uint32 internal constant GLOBAL_ASSET_ACCOUNT_ID = 1;
    bytes32 internal constant GLOBAL_ASSET_ACCOUNT_ADDRESS = 0xffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffffff;

    /// @dev USD and USD stable tokens defined by zkLink
    /// @dev User can deposit USD stable token(eg. USDC, BUSD) to get USD in layer two
    /// @dev And user also can full exit USD in layer two and get back USD stable tokens
    uint16 internal constant USD_TOKEN_ID = 1;
    uint16 internal constant MIN_USD_STABLE_TOKEN_ID = 17;
    uint16 internal constant MAX_USD_STABLE_TOKEN_ID = 31;
}

pragma solidity ^0.8.0;

// SPDX-License-Identifier: MIT OR Apache-2.0



/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 *
 * _Since v2.5.0:_ this module is now much more gas efficient, given net gas
 * metering changes introduced in the Istanbul hardfork.
 */
contract ReentrancyGuard {
    /// @dev Address of lock flag variable.
    /// @dev Flag is placed at random memory location to not interfere with Storage contract.
    uint256 private constant LOCK_FLAG_ADDRESS = 0x8e94fed44239eb2314ab7a406345e6c5a8f0ccedf3b600de3d004e672c33abf4; // keccak256("ReentrancyGuard") - 1;

    // https://github.com/OpenZeppelin/openzeppelin-contracts/blob/566a774222707e424896c0c390a84dc3c13bdcb2/contracts/security/ReentrancyGuard.sol
    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    function initializeReentrancyGuard() internal {
        uint256 lockSlotOldValue;

        // Storing an initial non-zero value makes deployment a bit more
        // expensive, but in exchange every call to nonReentrant
        // will be cheaper.
        assembly {
            lockSlotOldValue := sload(LOCK_FLAG_ADDRESS)
            sstore(LOCK_FLAG_ADDRESS, _NOT_ENTERED)
        }

        // Check that storage slot for reentrancy guard is empty to rule out possibility of double initialization
        require(lockSlotOldValue == 0, "1B");
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and make it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        uint256 _status;
        assembly {
            _status := sload(LOCK_FLAG_ADDRESS)
        }

        // On the first call to nonReentrant, _notEntered will be true
        require(_status == _NOT_ENTERED);

        // Any calls to nonReentrant after this point will fail
        assembly {
            sstore(LOCK_FLAG_ADDRESS, _ENTERED)
        }

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        assembly {
            sstore(LOCK_FLAG_ADDRESS, _NOT_ENTERED)
        }
    }
}

{
  "viaIR": true,
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract IZkLink","name":"_zklink","type":"address"},{"internalType":"contract ILayerZeroEndpoint","name":"_endpoint","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint16","name":"srcChainId","type":"uint16"},{"indexed":false,"internalType":"bytes","name":"srcAddress","type":"bytes"},{"indexed":false,"internalType":"uint64","name":"nonce","type":"uint64"},{"indexed":false,"internalType":"bytes","name":"payload","type":"bytes"}],"name":"MessageFailed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"zkLinkChainId","type":"uint8"},{"indexed":false,"internalType":"uint16","name":"lzChainId","type":"uint16"},{"indexed":false,"internalType":"bytes","name":"destination","type":"bytes"}],"name":"UpdateDestination","type":"event"},{"inputs":[],"name":"ALL_CHAINS","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"CHAIN_ID","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_FEE_ADDRESS","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MASTER_CHAIN_ID","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MAX_CHAIN_ID","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MIN_CHAIN_ID","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"destZkLinkChainId","type":"uint8"},{"internalType":"uint32","name":"blockNumber","type":"uint32"}],"name":"confirmBlock","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"destinations","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"endpoint","outputs":[{"internalType":"contract ILayerZeroEndpoint","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"destZkLinkChainId","type":"uint8"},{"internalType":"uint32","name":"blockNumber","type":"uint32"}],"name":"estimateConfirmBlockFee","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"syncHash","type":"bytes32"}],"name":"estimateSendSyncHashFee","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"},{"internalType":"bytes","name":"","type":"bytes"},{"internalType":"uint64","name":"","type":"uint64"}],"name":"failedMessages","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"internalType":"bytes","name":"_srcAddress","type":"bytes"}],"name":"forceResumeReceive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"lzChainIdToZKLinkChainId","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"srcChainId","type":"uint16"},{"internalType":"bytes","name":"srcPath","type":"bytes"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"bytes","name":"payload","type":"bytes"}],"name":"lzReceive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"srcChainId","type":"uint16"},{"internalType":"bytes","name":"srcAddress","type":"bytes"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"bytes","name":"payload","type":"bytes"}],"name":"nonblockingLzReceive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"srcChainId","type":"uint16"},{"internalType":"bytes","name":"srcAddress","type":"bytes"},{"internalType":"uint64","name":"nonce","type":"uint64"},{"internalType":"bytes","name":"payload","type":"bytes"}],"name":"retryMessage","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"syncHash","type":"bytes32"}],"name":"sendSyncHash","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"},{"internalType":"uint16","name":"_chainId","type":"uint16"},{"internalType":"uint256","name":"_configType","type":"uint256"},{"internalType":"bytes","name":"_config","type":"bytes"}],"name":"setConfig","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"zkLinkChainId","type":"uint8"},{"internalType":"uint16","name":"lzChainId","type":"uint16"},{"internalType":"bytes","name":"contractAddr","type":"bytes"}],"name":"setDestination","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setReceiveVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_version","type":"uint16"}],"name":"setSendVersion","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"}],"name":"zkLinkChainIdToLZChainId","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"zklink","outputs":[{"internalType":"contract IZkLink","name":"","type":"address"}],"stateMutability":"view","type":"function"}]

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00000000000000000000000035d173cdfe4d484bc5985fda55fabad5892c7b8200000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675

-----Decoded View---------------
Arg [0] : _zklink (address): 0x35D173cdfE4d484BC5985fDa55FABad5892c7B82
Arg [1] : _endpoint (address): 0x66A71Dcef29A0fFBDBE3c6a460a3B5BC225Cd675

-----Encoded View---------------
2 Constructor Arguments found :
Arg [0] : 00000000000000000000000035d173cdfe4d484bc5985fda55fabad5892c7b82
Arg [1] : 00000000000000000000000066a71dcef29a0ffbdbe3c6a460a3b5bc225cd675