Contract 0x44b74ee2695d6937df20877d99a1a9609c48697d 4

 
Txn Hash Method
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0xb806c3eb6d9590295037b4e47bb785f3658781f4504f2b99fb46e7e21063ee94Add Destination ...142842272024-05-10 16:16:4117 days 2 hrs ago0x690f4e2f19717a06e1c146b2dce68c2d23e36f4c IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0 ETH0.0000034918450.117507668
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0x45c035301d47bccbf7680fca9a465f489b70a828b628448564257eabfe8679f1Bridge139872212024-05-03 19:16:2923 days 23 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.19383762010551 ETH0.0000332943090.130828553
0x32fe93b359001f3ba17aa9ee525ff3c13b48a5280a086c010fcb21dc9dd0314bBridge139533032024-05-03 0:25:5324 days 18 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.200081008668822 ETH0.0000190073320.072701143
0x9c8a9f4cbb915b58a9c0804c74c393f57a024cf2d985abf44ef76e7eb858d8ebBridge137675402024-04-28 17:13:4729 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.102836596795504 ETH0.0000219260930.08316176
0xad4b56260cb302c9b67182783f555119dcee9228ea608965f1e98b3a06b6c8cbBridge137674912024-04-28 17:12:0929 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.754667970058035 ETH0.0000215264540.084493218
0xb6f22d06e20d269bd483265c6353243bdf38f50f805044e8c689f8eff72ad9f7Bridge137674722024-04-28 17:11:3129 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.338171599713198 ETH0.0000224059530.085641845
0xc86bd55e82494c2147081ac1532b8e8c937cdf0405d4d04f1651049c848412c7Bridge137672222024-04-28 17:03:1129 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.265345329378808 ETH0.0000260153530.098690896
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0x80adba79ae319d8d85354effba695c013e0ae8b722ad37e2aca363cac328894dBridge135435102024-04-23 12:46:0734 days 5 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d2.360044092491205 ETH0.0000304024870.115341535
0xb5221cdc4ae5d6bee6a4e9c59f9bb0061e571a2918d19cef3e0a81f12cc2ace7Bridge133347602024-04-18 16:47:4739 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d2.421473446990791 ETH0.0000207873380.078765462
0x681149769179ac0f9b4f9c4e7621cae521c210580b7a5f0b51b238fa01c1a7a3Bridge133345052024-04-18 16:39:1739 days 1 hr ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d2.000044092491205 ETH0.000023037040.087293672
0xfbde924e8623d451073a9644aabd28e304745ff480b0c438ebc2508970e7d97dBridge132828842024-04-17 11:58:3540 days 6 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.500043212447205 ETH0.0000096222530.035642369
0xe530b6505146c4c3d8ecc531f7e86092651d0dc4c3ff26a6d5a5991d8538488eBridge132828622024-04-17 11:57:5140 days 6 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.000124983914024 ETH0.0000092544260.035462203
0x652d840bae2477e68860c246b43f5d8a953fc2385e6b27247166049d38eae3f5Bridge132828522024-04-17 11:57:3140 days 6 hrs ago0xaccc1fe6537eb8eb56b31ccfc48eb9363e8dd32e IN  0x44b74ee2695d6937df20877d99a1a9609c48697d1.000021032454753 ETH0.0000093814250.035033678
0xe210ca83193ea441be43e9943fbcf7f1c7675a3b00389b35f755a46c9005d060Bridge132546792024-04-16 20:18:2540 days 22 hrs ago0xe5a2b1ae8c5ebf3c73328dd27f9949f8a887e63d IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.000564613249386 ETH0.0000099187820.035268643
0x4c2a9522174fadd7ccbc48ac012aeeda60e4d85e00b107a7c32e5ff8c74680cbAdd Destination ...132545552024-04-16 20:14:1740 days 22 hrs ago0x690f4e2f19717a06e1c146b2dce68c2d23e36f4c IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0 ETH0.0000010679590.035497843
0xa51b009ff68cd62b7eb3752e24af90d15547aeaa637ab7650b39eeaa3f82a0f6Bridge132058702024-04-15 17:11:2742 days 1 hr ago0xe5a2b1ae8c5ebf3c73328dd27f9949f8a887e63d IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.000509550272999 ETH0.000039183240.148620834
0x4bce0ef781b633cc3047e4f3334712d3d6f9e956cf8390daf23eb114d135e25fBridge132053182024-04-15 16:53:0342 days 1 hr ago0xe5a2b1ae8c5ebf3c73328dd27f9949f8a887e63d IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.000553550272999 ETH0.0000550776730.196236207
0xb482e523bc69411d43cac71f8d51182feebb78f918cefacce709e9032adcbb3aAdd Destination ...132050602024-04-15 16:44:2742 days 1 hr ago0x690f4e2f19717a06e1c146b2dce68c2d23e36f4c IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0 ETH0.000006005970.20179278
0x5d321e2b47e825c772adf24b41423341277b5a143f0efc6339d3c84bb53e1caaAdd Destination ...132029572024-04-15 15:34:2142 days 2 hrs ago0x690f4e2f19717a06e1c146b2dce68c2d23e36f4c IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0 ETH0.0000077908350.289845185
0xc18826d072819922d209b63eb8352bf66969edd9485b802d1c0cac9ba7085160Bridge130845612024-04-12 21:47:4944 days 20 hrs ago0xe5a2b1ae8c5ebf3c73328dd27f9949f8a887e63d IN  0x44b74ee2695d6937df20877d99a1a9609c48697d0.000551360926318 ETH0.0000049723470.01856177
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Latest 25 internal transaction
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0xc73758516db3c8b25319e50b96e339bb45ffcd73e6deda66f6906a4c5380d4a2150224302024-05-27 18:23:279 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035864903441437 ETH
0xc73758516db3c8b25319e50b96e339bb45ffcd73e6deda66f6906a4c5380d4a2150224302024-05-27 18:23:279 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.00077 ETH
0xc73758516db3c8b25319e50b96e339bb45ffcd73e6deda66f6906a4c5380d4a2150224302024-05-27 18:23:279 mins ago 0x823c6968088dbd4c4af13f5321bb3f8381f5b835 0x44b74ee2695d6937df20877d99a1a9609c48697d0.000805864903441437 ETH
0x98dcb06e1e1f6c1575d5d9a5be7ecac70fc612759c5009bc767201cdfd2d9d4c150221452024-05-27 18:13:5719 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035864903441437 ETH
0x98dcb06e1e1f6c1575d5d9a5be7ecac70fc612759c5009bc767201cdfd2d9d4c150221452024-05-27 18:13:5719 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.005 ETH
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0x5d1e2d2d3b3b42a6f1cf720ed9de9d1d2a40b02047d2f3be44988c58fe11d21d150220132024-05-27 18:09:3323 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035870536860701 ETH
0x5d1e2d2d3b3b42a6f1cf720ed9de9d1d2a40b02047d2f3be44988c58fe11d21d150220132024-05-27 18:09:3323 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.000000247257909664 ETH
0x5d1e2d2d3b3b42a6f1cf720ed9de9d1d2a40b02047d2f3be44988c58fe11d21d150220132024-05-27 18:09:3323 mins ago 0x823c6968088dbd4c4af13f5321bb3f8381f5b835 0x44b74ee2695d6937df20877d99a1a9609c48697d0.000036117794770365 ETH
0xbbf73a2b65749afebd3c37cbf75a5e5c046029538a8e456db91dae49e386f7e5150219552024-05-27 18:07:3725 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035864903441437 ETH
0xbbf73a2b65749afebd3c37cbf75a5e5c046029538a8e456db91dae49e386f7e5150219552024-05-27 18:07:3725 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.005 ETH
0xbbf73a2b65749afebd3c37cbf75a5e5c046029538a8e456db91dae49e386f7e5150219552024-05-27 18:07:3725 mins ago 0x823c6968088dbd4c4af13f5321bb3f8381f5b835 0x44b74ee2695d6937df20877d99a1a9609c48697d0.005035864903441437 ETH
0xdd67a337924f1b344e7f026770cd9650236620a16394e6a98c43b2e11759dba4150217262024-05-27 17:59:5933 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035864903441437 ETH
0xdd67a337924f1b344e7f026770cd9650236620a16394e6a98c43b2e11759dba4150217262024-05-27 17:59:5933 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.0018 ETH
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0x18c77f3e321d382b6b417d592d443262afb92d859d88b3cbe34345a19c185015150194442024-05-27 16:43:551 hr 49 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000028408628991308 ETH
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0x4efc48853af7b500554a9e27609b360a5cebaa66de2ddd31a872d52cec9291d3150181132024-05-27 15:59:332 hrs 33 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035870536860701 ETH
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0xbe62f848168799d09aba506686d1f29889c3a8d0aa956828219409abacb1a102150180952024-05-27 15:58:572 hrs 34 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035870536860701 ETH
0xbe62f848168799d09aba506686d1f29889c3a8d0aa956828219409abacb1a102150180952024-05-27 15:58:572 hrs 34 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697dWrapped Ether0.000000049789520133 ETH
0xbe62f848168799d09aba506686d1f29889c3a8d0aa956828219409abacb1a102150180952024-05-27 15:58:572 hrs 34 mins ago 0x823c6968088dbd4c4af13f5321bb3f8381f5b835 0x44b74ee2695d6937df20877d99a1a9609c48697d0.000035920326380834 ETH
0xea2a108aa98efa59eb9eaec1d1c7a48a7779e3328b001a4b30cf23740c4d5220150149762024-05-27 14:14:594 hrs 18 mins ago 0x44b74ee2695d6937df20877d99a1a9609c48697d 0x1572d48a52906b834fb236aa77831d669f6d87a10.000035870536860701 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
DecentEthRouter

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 18 : DecentEthRouter.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;

import {IWETH} from "./interfaces/IWETH.sol";
import {IDcntEth} from "./interfaces/IDcntEth.sol";
import {ICommonOFT} from "solidity-examples/token/oft/v2/interfaces/ICommonOFT.sol";
import {IOFTReceiverV2} from "solidity-examples/token/oft/v2/interfaces/IOFTReceiverV2.sol";
import {Roles} from "./utils/Roles.sol";
import {IDecentBridgeExecutor} from "./interfaces/IDecentBridgeExecutor.sol";
import {IDecentEthRouter} from "./interfaces/IDecentEthRouter.sol";

contract DecentEthRouter is IDecentEthRouter, IOFTReceiverV2, Roles {
    IWETH public weth;
    IDcntEth public dcntEth;
    IDecentBridgeExecutor public executor;

    uint8 public constant MT_ETH_TRANSFER = 0;
    uint8 public constant MT_ETH_TRANSFER_WITH_PAYLOAD = 1;

    uint16 public constant PT_SEND_AND_CALL = 1;

    bool public gasCurrencyIsEth; // for chains that use ETH as gas currency

    bytes32 public constant BRIDGE_OPERATOR_ROLE = keccak256("BRIDGE_OPERATOR_ROLE");
    bool public requireOperator;

    mapping(uint16 => address) public destinationBridges;
    mapping(address => uint256) public balanceOf;

    constructor(
        address payable _wethAddress,
        bool gasIsEth,
        address _executor
    ) Roles(msg.sender) {
        weth = IWETH(_wethAddress);
        gasCurrencyIsEth = gasIsEth;
        executor = IDecentBridgeExecutor(payable(_executor));
    }

    modifier onlyEthChain() {
        if (!gasCurrencyIsEth) revert OnlyEthChain();
        _;
    }

    modifier onlyLzApp() {
        if (address(dcntEth) != msg.sender) revert OnlyLzApp();
        _;
    }

    modifier onlyOperator() {
        if (requireOperator && !hasRole(BRIDGE_OPERATOR_ROLE, msg.sender)) revert OnlyBridgeOperator();
        _;
    }

    modifier onlyIfWeHaveEnoughReserves(uint256 amount) {
        if (weth.balanceOf(address(this)) < amount) revert NotEnoughReserves();
        _;
    }

    modifier userDepositing(uint256 amount) {
        balanceOf[msg.sender] += amount;
        _;
    }

    modifier userIsWithdrawing(uint256 amount) {
        uint256 balance = balanceOf[msg.sender];
        if (balance < amount) revert InsufficientBalance();
        _;
        balanceOf[msg.sender] -= amount;
    }

    /// @inheritdoc IDecentEthRouter
    function registerDcntEth(address _addr) public onlyAdmin {
        dcntEth = IDcntEth(_addr);
    }

    /// @inheritdoc IDecentEthRouter
    function addDestinationBridge(
        uint16 _dstChainId,
        address _routerAddress
    ) public onlyAdmin {
        destinationBridges[_dstChainId] = _routerAddress;
    }

    function _getCallParams(
        uint8 msgType,
        address _toAddress,
        address _refundAddress,
        uint16 _dstChainId,
        uint64 _dstGasForCall,
        bool deliverEth,
        bytes memory additionalPayload
    )
        private
        view
        returns (
            bytes32 destBridge,
            bytes memory adapterParams,
            bytes memory payload
        )
    {
        uint256 GAS_FOR_RELAY = 100000;
        uint256 gasAmount = GAS_FOR_RELAY + _dstGasForCall;
        adapterParams = abi.encodePacked(PT_SEND_AND_CALL, gasAmount);
        destBridge = bytes32(abi.encode(destinationBridges[_dstChainId]));
        if (msgType == MT_ETH_TRANSFER) {
            payload = abi.encode(msgType, msg.sender, _toAddress, _refundAddress, deliverEth);
        } else {
            payload = abi.encode(
                msgType,
                msg.sender,
                _toAddress,
                _refundAddress,
                deliverEth,
                additionalPayload
            );
        }
    }

    function estimateSendAndCallFee(
        uint8 msgType,
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        uint64 _dstGasForCall,
        bool deliverEth,
        bytes memory payload
    ) public view returns (uint nativeFee, uint zroFee) {
        (
            bytes32 destinationBridge,
            bytes memory adapterParams,
            bytes memory _payload
        ) = _getCallParams(
                msgType,
                _toAddress,
                _refundAddress,
                _dstChainId,
                _dstGasForCall,
                deliverEth,
                payload
            );

        return
            dcntEth.estimateSendAndCallFee(
                _dstChainId,
                destinationBridge,
                _amount,
                _payload,
                _dstGasForCall,
                false, // useZero
                adapterParams // Relayer adapter parameters
                // contains packet type (send and call in this case) and gasAmount
            );
    }

    function _bridgeWithPayload(
        uint8 msgType,
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        uint64 _dstGasForCall,
        bytes memory additionalPayload,
        bool deliverEth
    ) internal {
        (
            bytes32 destinationBridge,
            bytes memory adapterParams,
            bytes memory payload
        ) = _getCallParams(
                msgType,
                _toAddress,
                _refundAddress,
                _dstChainId,
                _dstGasForCall,
                deliverEth,
                additionalPayload
            );

        ICommonOFT.LzCallParams memory callParams = ICommonOFT.LzCallParams({
            refundAddress: payable(_refundAddress),
            zroPaymentAddress: address(0x0),
            adapterParams: adapterParams
        });

        uint gasValue;
        if (gasCurrencyIsEth) {
            weth.deposit{value: _amount}();
            gasValue = msg.value - _amount;
        } else {
            weth.transferFrom(msg.sender, address(this), _amount);
            gasValue = msg.value;
        }

        dcntEth.sendAndCall{value: gasValue}(
            address(this), // from address that has dcntEth (so DecentRouter)
            _dstChainId,
            destinationBridge, // toAddress
            _amount, // amount
            payload, //payload (will have recipients address)
            _dstGasForCall, // dstGasForCall
            callParams // refundAddress, zroPaymentAddress, adapterParams
        );
    }

    /// @inheritdoc IDecentEthRouter
    function bridgeWithPayload(
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        bool deliverEth,
        uint64 _dstGasForCall,
        bytes memory additionalPayload
    ) public payable onlyOperator {
        return
            _bridgeWithPayload(
                MT_ETH_TRANSFER_WITH_PAYLOAD,
                _dstChainId,
                _toAddress,
                _refundAddress,
                _amount,
                _dstGasForCall,
                additionalPayload,
                deliverEth
            );
    }

    /// @inheritdoc IDecentEthRouter
    function bridge(
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        uint64 _dstGasForCall,
        bool deliverEth // if false, delivers WETH
    ) public payable onlyOperator {
        _bridgeWithPayload(
            MT_ETH_TRANSFER,
            _dstChainId,
            _toAddress,
            _refundAddress,
            _amount,
            _dstGasForCall,
            bytes(""),
            deliverEth
        );
    }

    /// @inheritdoc IOFTReceiverV2
    function onOFTReceived(
        uint16 _srcChainId,
        bytes calldata,
        uint64,
        bytes32,
        uint _amount,
        bytes memory _payload
    ) external override onlyLzApp {
        (uint8 msgType, address _from, address _to, address _refundAddress, bool deliverEth) = abi
            .decode(_payload, (uint8, address, address, address, bool));

        bytes memory callPayload = "";

        if (msgType == MT_ETH_TRANSFER_WITH_PAYLOAD) {
            (, , , , , callPayload) = abi.decode(
                _payload,
                (uint8, address, address, address, bool, bytes)
            );
        }

        emit ReceivedDecentEth(
            msgType,
            _srcChainId,
            _from,
            _to,
            _amount,
            callPayload
        );

        if (weth.balanceOf(address(this)) < _amount) {
            dcntEth.transfer(_refundAddress, _amount);
            return;
        }

        if (msgType == MT_ETH_TRANSFER) {
            if (!gasCurrencyIsEth || !deliverEth) {
                weth.transfer(_to, _amount);
            } else {
                weth.withdraw(_amount);
                payable(_to).transfer(_amount);
            }
        } else {
            weth.approve(address(executor), _amount);
            executor.execute(_refundAddress, _to, deliverEth, _amount, callPayload);
        }
    }

    /// @inheritdoc IDecentEthRouter
    function redeemEth(
        uint256 amount
    )
        public
        onlyEthChain
        onlyIfWeHaveEnoughReserves(amount)
    {
        dcntEth.transferFrom(msg.sender, address(this), amount);
        weth.withdraw(amount);
        payable(msg.sender).transfer(amount);
    }

    /// @inheritdoc IDecentEthRouter
    function redeemWeth(
        uint256 amount
    ) public onlyIfWeHaveEnoughReserves(amount) {
        dcntEth.transferFrom(msg.sender, address(this), amount);
        weth.transfer(msg.sender, amount);
    }

    /// @inheritdoc IDecentEthRouter
    function addLiquidityEth()
        public
        payable
        onlyEthChain
        userDepositing(msg.value)
    {
        weth.deposit{value: msg.value}();
        dcntEth.mint(address(this), msg.value);
    }

    /// @inheritdoc IDecentEthRouter
    function removeLiquidityEth(
        uint256 amount
    ) public onlyEthChain userIsWithdrawing(amount) {
        dcntEth.burn(address(this), amount);
        weth.withdraw(amount);
        payable(msg.sender).transfer(amount);
    }

    /// @inheritdoc IDecentEthRouter
    function addLiquidityWeth(
        uint256 amount
    ) public payable userDepositing(amount) {
        weth.transferFrom(msg.sender, address(this), amount);
        dcntEth.mint(address(this), amount);
    }

    /// @inheritdoc IDecentEthRouter
    function removeLiquidityWeth(
        uint256 amount
    ) public userIsWithdrawing(amount) {
        dcntEth.burn(address(this), amount);
        weth.transfer(msg.sender, amount);
    }

    function setRequireOperator(
        bool _requireOperator
    ) public onlyAdmin {
        requireOperator = _requireOperator;
    }

    receive() external payable {}

    fallback() external payable {}
}

File 2 of 18 : IWETH.sol
pragma solidity ^0.8.0;

import {IERC20} from "forge-std/interfaces/IERC20.sol";

interface IWETH is IERC20 {

    function deposit() external payable;

    function withdraw(uint) external;
}

File 3 of 18 : IDcntEth.sol
pragma solidity ^0.8.0;

import {IOFTV2} from "solidity-examples/token/oft/v2/interfaces/IOFTV2.sol";
import {IERC20} from "forge-std/interfaces/IERC20.sol";

interface IDcntEth is IOFTV2, IERC20 {

    function setRouter(address _router) external;

    function mint(address _to, uint256 _amount) external;

    function burn(address _from, uint256 _amount) external;

    function mintByOwner(address _to, uint256 _amount) external;

    function burnByOwner(address _from, uint256 _amount) external;
}

File 4 of 18 : ICommonOFT.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface ICommonOFT is IERC165 {

    struct LzCallParams {
        address payable refundAddress;
        address zroPaymentAddress;
        bytes adapterParams;
    }

    /**
     * @dev estimate send token `_tokenId` to (`_dstChainId`, `_toAddress`)
     * _dstChainId - L0 defined chain id to send tokens too
     * _toAddress - dynamic bytes array which contains the address to whom you are sending tokens to on the dstChain
     * _amount - amount of the tokens to transfer
     * _useZro - indicates to use zro to pay L0 fees
     * _adapterParam - flexible bytes array to indicate messaging adapter services in L0
     */
    function estimateSendFee(uint16 _dstChainId, bytes32 _toAddress, uint _amount, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    function estimateSendAndCallFee(uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, bool _useZro, bytes calldata _adapterParams) external view returns (uint nativeFee, uint zroFee);

    /**
     * @dev returns the circulating amount of tokens on current chain
     */
    function circulatingSupply() external view returns (uint);

    /**
     * @dev returns the address of the ERC20 token
     */
    function token() external view returns (address);
}

File 5 of 18 : IOFTReceiverV2.sol
// SPDX-License-Identifier: BUSL-1.1

pragma solidity >=0.5.0;

interface IOFTReceiverV2 {
    /**
     * @dev Called by the OFT contract when tokens are received from source chain.
     * @param _srcChainId The chain id of the source chain.
     * @param _srcAddress The address of the OFT token contract on the source chain.
     * @param _nonce The nonce of the transaction on the source chain.
     * @param _from The address of the account who calls the sendAndCall() on the source chain.
     * @param _amount The amount of tokens to transfer.
     * @param _payload Additional data with no specified format.
     */
    function onOFTReceived(uint16 _srcChainId, bytes calldata _srcAddress, uint64 _nonce, bytes32 _from, uint _amount, bytes calldata _payload) external;
}

File 6 of 18 : Roles.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

contract Roles is AccessControl {
    constructor(address admin) {
        _grantRole(DEFAULT_ADMIN_ROLE, admin);
    }

    modifier onlyAdmin() {
        require(hasRole(DEFAULT_ADMIN_ROLE, msg.sender), "Only admin");
        _;
    }
}

File 7 of 18 : IDecentBridgeExecutor.sol
pragma solidity ^0.8.0;

import {IOFTV2} from "solidity-examples/token/oft/v2/interfaces/IOFTV2.sol";
import {IERC20} from "forge-std/interfaces/IERC20.sol";

interface IDecentBridgeExecutor {

    /**
     * @dev called upon receiving dcntEth in the DecentEthRouter
     * @param refundAddress the address to send refunds
     * @param target target contract
     * @param deliverEth delivers WETH if false
     * @param amount amount of the transaction
     * @param callPayload payload for the tx
     */
    function execute(
      address refundAddress,
      address target,
      bool deliverEth,
      uint256 amount,
      bytes memory callPayload
    ) external;
}

File 8 of 18 : IDecentEthRouter.sol
pragma solidity ^0.8.0;

interface IDecentEthRouter {

    event ReceivedDecentEth(
        uint8 msgType,
        uint16 _srcChainId,
        address from,
        address _to,
        uint amount,
        bytes payload
    );
    
    error OnlyLzApp();

    error OnlyEthChain();

    error OnlyBridgeOperator();

    error NotEnoughReserves();

    error InsufficientBalance();

    function MT_ETH_TRANSFER() external view returns (uint8);

    function MT_ETH_TRANSFER_WITH_PAYLOAD() external view returns (uint8);

    /**
     * @dev Sets dcntEth to the router
     * @param _addr The address of the deployed DcntEth token
     */
    function registerDcntEth(address _addr) external;

    /**
     * @dev Adds a destination bridge for the bridge
     * @param _dstChainId The lz chainId
     * @param _routerAddress The router address on the dst chain
     */
    function addDestinationBridge(
        uint16 _dstChainId,
        address _routerAddress
    ) external;

    function estimateSendAndCallFee(
        uint8 msgType,
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        uint64 _dstGasForCall,
        bool deliverEth,
        bytes memory payload
    ) external view returns (uint nativeFee, uint zroFee);

    /**
     * @param _dstChainId lz endpoint
     * @param _toAddress the destination address (i.e. dst bridge)
     * @param _refundAddress the refund address
     * @param _amount the amount being bridged
     * @param deliverEth if false, delivers WETH
     * @param _dstGasForCall the amount of dst gas
     * @param additionalPayload contains the refundAddress, zroPaymentAddress, and adapterParams
     */
    function bridgeWithPayload(
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        bool deliverEth,
        uint64 _dstGasForCall,
        bytes memory additionalPayload
    ) external payable;

    /**
     * @param _dstChainId lz endpoint
     * @param _toAddress destination address
     * @param _refundAddress the address to be refunded
     * @param _amount the amount being bridge
     * @param _dstGasForCall the amount of dst gas
     * @param deliverEth if false, delivers WETH
     */
    function bridge(
        uint16 _dstChainId,
        address _toAddress,
        address _refundAddress,
        uint _amount,
        uint64 _dstGasForCall,
        bool deliverEth // if false, delivers WETH
    ) external payable;

    /**
     * @dev allows users to redeem their dcntEth for ETH
     * @param amount the amount to be redeemed
     */
    function redeemEth(uint256 amount) external;

    /**
     * @dev allows users to redeem their dcntEth for WETH
     * @param amount the amount to be redeemed
     */
    function redeemWeth(uint256 amount) external;

    /**
     * @dev adds bridge liquidity by paying ETH
     */
    function addLiquidityEth() external payable;

    /**
     * @dev withdraws a users bridge liquidity for ETH
     * @param amount the amount to be redeemed
     */
    function removeLiquidityEth(uint256 amount) external;

    /**
     * @dev adds bridge liquidity by providing WETH
     * @param amount the amount to be added
     */
    function addLiquidityWeth(uint256 amount) external payable;

    /**
     * @dev withdraws a users bridge liquidity for WETH
     * @param amount the amount to be redeemed
     */
    function removeLiquidityWeth(uint256 amount) external;
}

File 9 of 18 : IERC20.sol
// SPDX-License-Identifier: MIT
pragma solidity >=0.6.2;

/// @dev Interface of the ERC20 standard as defined in the EIP.
/// @dev This includes the optional name, symbol, and decimals metadata.
interface IERC20 {
    /// @dev Emitted when `value` tokens are moved from one account (`from`) to another (`to`).
    event Transfer(address indexed from, address indexed to, uint256 value);

    /// @dev Emitted when the allowance of a `spender` for an `owner` is set, where `value`
    /// is the new allowance.
    event Approval(address indexed owner, address indexed spender, uint256 value);

    /// @notice Returns the amount of tokens in existence.
    function totalSupply() external view returns (uint256);

    /// @notice Returns the amount of tokens owned by `account`.
    function balanceOf(address account) external view returns (uint256);

    /// @notice Moves `amount` tokens from the caller's account to `to`.
    function transfer(address to, uint256 amount) external returns (bool);

    /// @notice Returns the remaining number of tokens that `spender` is allowed
    /// to spend on behalf of `owner`
    function allowance(address owner, address spender) external view returns (uint256);

    /// @notice Sets `amount` as the allowance of `spender` over the caller's tokens.
    /// @dev Be aware of front-running risks: https://github.com/ethereum/EIPs/issues/20#issuecomment-263524729
    function approve(address spender, uint256 amount) external returns (bool);

    /// @notice Moves `amount` tokens from `from` to `to` using the allowance mechanism.
    /// `amount` is then deducted from the caller's allowance.
    function transferFrom(address from, address to, uint256 amount) external returns (bool);

    /// @notice Returns the name of the token.
    function name() external view returns (string memory);

    /// @notice Returns the symbol of the token.
    function symbol() external view returns (string memory);

    /// @notice Returns the decimals places of the token.
    function decimals() external view returns (uint8);
}

File 10 of 18 : IOFTV2.sol
// SPDX-License-Identifier: MIT

pragma solidity >=0.5.0;

import "./ICommonOFT.sol";

/**
 * @dev Interface of the IOFT core standard
 */
interface IOFTV2 is ICommonOFT {

    /**
     * @dev send `_amount` amount of token to (`_dstChainId`, `_toAddress`) from `_from`
     * `_from` the owner of token
     * `_dstChainId` the destination chain identifier
     * `_toAddress` can be any size depending on the `dstChainId`.
     * `_amount` the quantity of tokens in wei
     * `_refundAddress` the address LayerZero refunds if too much message fee is sent
     * `_zroPaymentAddress` set to address(0x0) if not paying in ZRO (LayerZero Token)
     * `_adapterParams` is a flexible bytes array to indicate messaging adapter services
     */
    function sendFrom(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, LzCallParams calldata _callParams) external payable;

    function sendAndCall(address _from, uint16 _dstChainId, bytes32 _toAddress, uint _amount, bytes calldata _payload, uint64 _dstGasForCall, LzCallParams calldata _callParams) external payable;
}

File 11 of 18 : IERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

File 12 of 18 : AccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/AccessControl.sol)

pragma solidity ^0.8.0;

import "./IAccessControl.sol";
import "../utils/Context.sol";
import "../utils/Strings.sol";
import "../utils/introspection/ERC165.sol";

/**
 * @dev Contract module that allows children to implement role-based access
 * control mechanisms. This is a lightweight version that doesn't allow enumerating role
 * members except through off-chain means by accessing the contract event logs. Some
 * applications may benefit from on-chain enumerability, for those cases see
 * {AccessControlEnumerable}.
 *
 * Roles are referred to by their `bytes32` identifier. These should be exposed
 * in the external API and be unique. The best way to achieve this is by
 * using `public constant` hash digests:
 *
 * ```solidity
 * bytes32 public constant MY_ROLE = keccak256("MY_ROLE");
 * ```
 *
 * Roles can be used to represent a set of permissions. To restrict access to a
 * function call, use {hasRole}:
 *
 * ```solidity
 * function foo() public {
 *     require(hasRole(MY_ROLE, msg.sender));
 *     ...
 * }
 * ```
 *
 * Roles can be granted and revoked dynamically via the {grantRole} and
 * {revokeRole} functions. Each role has an associated admin role, and only
 * accounts that have a role's admin role can call {grantRole} and {revokeRole}.
 *
 * By default, the admin role for all roles is `DEFAULT_ADMIN_ROLE`, which means
 * that only accounts with this role will be able to grant or revoke other
 * roles. More complex role relationships can be created by using
 * {_setRoleAdmin}.
 *
 * WARNING: The `DEFAULT_ADMIN_ROLE` is also its own admin: it has permission to
 * grant and revoke this role. Extra precautions should be taken to secure
 * accounts that have been granted it. We recommend using {AccessControlDefaultAdminRules}
 * to enforce additional security measures for this role.
 */
abstract contract AccessControl is Context, IAccessControl, ERC165 {
    struct RoleData {
        mapping(address => bool) members;
        bytes32 adminRole;
    }

    mapping(bytes32 => RoleData) private _roles;

    bytes32 public constant DEFAULT_ADMIN_ROLE = 0x00;

    /**
     * @dev Modifier that checks that an account has a specific role. Reverts
     * with a standardized message including the required role.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     *
     * _Available since v4.1._
     */
    modifier onlyRole(bytes32 role) {
        _checkRole(role);
        _;
    }

    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IAccessControl).interfaceId || super.supportsInterface(interfaceId);
    }

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) public view virtual override returns (bool) {
        return _roles[role].members[account];
    }

    /**
     * @dev Revert with a standard message if `_msgSender()` is missing `role`.
     * Overriding this function changes the behavior of the {onlyRole} modifier.
     *
     * Format of the revert message is described in {_checkRole}.
     *
     * _Available since v4.6._
     */
    function _checkRole(bytes32 role) internal view virtual {
        _checkRole(role, _msgSender());
    }

    /**
     * @dev Revert with a standard message if `account` is missing `role`.
     *
     * The format of the revert reason is given by the following regular expression:
     *
     *  /^AccessControl: account (0x[0-9a-f]{40}) is missing role (0x[0-9a-f]{64})$/
     */
    function _checkRole(bytes32 role, address account) internal view virtual {
        if (!hasRole(role, account)) {
            revert(
                string(
                    abi.encodePacked(
                        "AccessControl: account ",
                        Strings.toHexString(account),
                        " is missing role ",
                        Strings.toHexString(uint256(role), 32)
                    )
                )
            );
        }
    }

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) public view virtual override returns (bytes32) {
        return _roles[role].adminRole;
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleGranted} event.
     */
    function grantRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _grantRole(role, account);
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     *
     * May emit a {RoleRevoked} event.
     */
    function revokeRole(bytes32 role, address account) public virtual override onlyRole(getRoleAdmin(role)) {
        _revokeRole(role, account);
    }

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been revoked `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     *
     * May emit a {RoleRevoked} event.
     */
    function renounceRole(bytes32 role, address account) public virtual override {
        require(account == _msgSender(), "AccessControl: can only renounce roles for self");

        _revokeRole(role, account);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event. Note that unlike {grantRole}, this function doesn't perform any
     * checks on the calling account.
     *
     * May emit a {RoleGranted} event.
     *
     * [WARNING]
     * ====
     * This function should only be called from the constructor when setting
     * up the initial roles for the system.
     *
     * Using this function in any other way is effectively circumventing the admin
     * system imposed by {AccessControl}.
     * ====
     *
     * NOTE: This function is deprecated in favor of {_grantRole}.
     */
    function _setupRole(bytes32 role, address account) internal virtual {
        _grantRole(role, account);
    }

    /**
     * @dev Sets `adminRole` as ``role``'s admin role.
     *
     * Emits a {RoleAdminChanged} event.
     */
    function _setRoleAdmin(bytes32 role, bytes32 adminRole) internal virtual {
        bytes32 previousAdminRole = getRoleAdmin(role);
        _roles[role].adminRole = adminRole;
        emit RoleAdminChanged(role, previousAdminRole, adminRole);
    }

    /**
     * @dev Grants `role` to `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleGranted} event.
     */
    function _grantRole(bytes32 role, address account) internal virtual {
        if (!hasRole(role, account)) {
            _roles[role].members[account] = true;
            emit RoleGranted(role, account, _msgSender());
        }
    }

    /**
     * @dev Revokes `role` from `account`.
     *
     * Internal function without access restriction.
     *
     * May emit a {RoleRevoked} event.
     */
    function _revokeRole(bytes32 role, address account) internal virtual {
        if (hasRole(role, account)) {
            _roles[role].members[account] = false;
            emit RoleRevoked(role, account, _msgSender());
        }
    }
}

File 13 of 18 : IAccessControl.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (access/IAccessControl.sol)

pragma solidity ^0.8.0;

/**
 * @dev External interface of AccessControl declared to support ERC165 detection.
 */
interface IAccessControl {
    /**
     * @dev Emitted when `newAdminRole` is set as ``role``'s admin role, replacing `previousAdminRole`
     *
     * `DEFAULT_ADMIN_ROLE` is the starting admin for all roles, despite
     * {RoleAdminChanged} not being emitted signaling this.
     *
     * _Available since v3.1._
     */
    event RoleAdminChanged(bytes32 indexed role, bytes32 indexed previousAdminRole, bytes32 indexed newAdminRole);

    /**
     * @dev Emitted when `account` is granted `role`.
     *
     * `sender` is the account that originated the contract call, an admin role
     * bearer except when using {AccessControl-_setupRole}.
     */
    event RoleGranted(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Emitted when `account` is revoked `role`.
     *
     * `sender` is the account that originated the contract call:
     *   - if using `revokeRole`, it is the admin role bearer
     *   - if using `renounceRole`, it is the role bearer (i.e. `account`)
     */
    event RoleRevoked(bytes32 indexed role, address indexed account, address indexed sender);

    /**
     * @dev Returns `true` if `account` has been granted `role`.
     */
    function hasRole(bytes32 role, address account) external view returns (bool);

    /**
     * @dev Returns the admin role that controls `role`. See {grantRole} and
     * {revokeRole}.
     *
     * To change a role's admin, use {AccessControl-_setRoleAdmin}.
     */
    function getRoleAdmin(bytes32 role) external view returns (bytes32);

    /**
     * @dev Grants `role` to `account`.
     *
     * If `account` had not been already granted `role`, emits a {RoleGranted}
     * event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function grantRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from `account`.
     *
     * If `account` had been granted `role`, emits a {RoleRevoked} event.
     *
     * Requirements:
     *
     * - the caller must have ``role``'s admin role.
     */
    function revokeRole(bytes32 role, address account) external;

    /**
     * @dev Revokes `role` from the calling account.
     *
     * Roles are often managed via {grantRole} and {revokeRole}: this function's
     * purpose is to provide a mechanism for accounts to lose their privileges
     * if they are compromised (such as when a trusted device is misplaced).
     *
     * If the calling account had been granted `role`, emits a {RoleRevoked}
     * event.
     *
     * Requirements:
     *
     * - the caller must be `account`.
     */
    function renounceRole(bytes32 role, address account) external;
}

File 14 of 18 : Context.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

File 15 of 18 : Strings.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Strings.sol)

pragma solidity ^0.8.0;

import "./math/Math.sol";
import "./math/SignedMath.sol";

/**
 * @dev String operations.
 */
library Strings {
    bytes16 private constant _SYMBOLS = "0123456789abcdef";
    uint8 private constant _ADDRESS_LENGTH = 20;

    /**
     * @dev Converts a `uint256` to its ASCII `string` decimal representation.
     */
    function toString(uint256 value) internal pure returns (string memory) {
        unchecked {
            uint256 length = Math.log10(value) + 1;
            string memory buffer = new string(length);
            uint256 ptr;
            /// @solidity memory-safe-assembly
            assembly {
                ptr := add(buffer, add(32, length))
            }
            while (true) {
                ptr--;
                /// @solidity memory-safe-assembly
                assembly {
                    mstore8(ptr, byte(mod(value, 10), _SYMBOLS))
                }
                value /= 10;
                if (value == 0) break;
            }
            return buffer;
        }
    }

    /**
     * @dev Converts a `int256` to its ASCII `string` decimal representation.
     */
    function toString(int256 value) internal pure returns (string memory) {
        return string(abi.encodePacked(value < 0 ? "-" : "", toString(SignedMath.abs(value))));
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation.
     */
    function toHexString(uint256 value) internal pure returns (string memory) {
        unchecked {
            return toHexString(value, Math.log256(value) + 1);
        }
    }

    /**
     * @dev Converts a `uint256` to its ASCII `string` hexadecimal representation with fixed length.
     */
    function toHexString(uint256 value, uint256 length) internal pure returns (string memory) {
        bytes memory buffer = new bytes(2 * length + 2);
        buffer[0] = "0";
        buffer[1] = "x";
        for (uint256 i = 2 * length + 1; i > 1; --i) {
            buffer[i] = _SYMBOLS[value & 0xf];
            value >>= 4;
        }
        require(value == 0, "Strings: hex length insufficient");
        return string(buffer);
    }

    /**
     * @dev Converts an `address` with fixed length of 20 bytes to its not checksummed ASCII `string` hexadecimal representation.
     */
    function toHexString(address addr) internal pure returns (string memory) {
        return toHexString(uint256(uint160(addr)), _ADDRESS_LENGTH);
    }

    /**
     * @dev Returns true if the two strings are equal.
     */
    function equal(string memory a, string memory b) internal pure returns (bool) {
        return keccak256(bytes(a)) == keccak256(bytes(b));
    }
}

File 16 of 18 : ERC165.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

File 17 of 18 : Math.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/math/Math.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard math utilities missing in the Solidity language.
 */
library Math {
    enum Rounding {
        Down, // Toward negative infinity
        Up, // Toward infinity
        Zero // Toward zero
    }

    /**
     * @dev Returns the largest of two numbers.
     */
    function max(uint256 a, uint256 b) internal pure returns (uint256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two numbers.
     */
    function min(uint256 a, uint256 b) internal pure returns (uint256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two numbers. The result is rounded towards
     * zero.
     */
    function average(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b) / 2 can overflow.
        return (a & b) + (a ^ b) / 2;
    }

    /**
     * @dev Returns the ceiling of the division of two numbers.
     *
     * This differs from standard division with `/` in that it rounds up instead
     * of rounding down.
     */
    function ceilDiv(uint256 a, uint256 b) internal pure returns (uint256) {
        // (a + b - 1) / b can overflow on addition, so we distribute.
        return a == 0 ? 0 : (a - 1) / b + 1;
    }

    /**
     * @notice Calculates floor(x * y / denominator) with full precision. Throws if result overflows a uint256 or denominator == 0
     * @dev Original credit to Remco Bloemen under MIT license (https://xn--2-umb.com/21/muldiv)
     * with further edits by Uniswap Labs also under MIT license.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator) internal pure returns (uint256 result) {
        unchecked {
            // 512-bit multiply [prod1 prod0] = x * y. Compute the product mod 2^256 and mod 2^256 - 1, then use
            // use the Chinese Remainder Theorem to reconstruct the 512 bit result. The result is stored in two 256
            // variables such that product = prod1 * 2^256 + prod0.
            uint256 prod0; // Least significant 256 bits of the product
            uint256 prod1; // Most significant 256 bits of the product
            assembly {
                let mm := mulmod(x, y, not(0))
                prod0 := mul(x, y)
                prod1 := sub(sub(mm, prod0), lt(mm, prod0))
            }

            // Handle non-overflow cases, 256 by 256 division.
            if (prod1 == 0) {
                // Solidity will revert if denominator == 0, unlike the div opcode on its own.
                // The surrounding unchecked block does not change this fact.
                // See https://docs.soliditylang.org/en/latest/control-structures.html#checked-or-unchecked-arithmetic.
                return prod0 / denominator;
            }

            // Make sure the result is less than 2^256. Also prevents denominator == 0.
            require(denominator > prod1, "Math: mulDiv overflow");

            ///////////////////////////////////////////////
            // 512 by 256 division.
            ///////////////////////////////////////////////

            // Make division exact by subtracting the remainder from [prod1 prod0].
            uint256 remainder;
            assembly {
                // Compute remainder using mulmod.
                remainder := mulmod(x, y, denominator)

                // Subtract 256 bit number from 512 bit number.
                prod1 := sub(prod1, gt(remainder, prod0))
                prod0 := sub(prod0, remainder)
            }

            // Factor powers of two out of denominator and compute largest power of two divisor of denominator. Always >= 1.
            // See https://cs.stackexchange.com/q/138556/92363.

            // Does not overflow because the denominator cannot be zero at this stage in the function.
            uint256 twos = denominator & (~denominator + 1);
            assembly {
                // Divide denominator by twos.
                denominator := div(denominator, twos)

                // Divide [prod1 prod0] by twos.
                prod0 := div(prod0, twos)

                // Flip twos such that it is 2^256 / twos. If twos is zero, then it becomes one.
                twos := add(div(sub(0, twos), twos), 1)
            }

            // Shift in bits from prod1 into prod0.
            prod0 |= prod1 * twos;

            // Invert denominator mod 2^256. Now that denominator is an odd number, it has an inverse modulo 2^256 such
            // that denominator * inv = 1 mod 2^256. Compute the inverse by starting with a seed that is correct for
            // four bits. That is, denominator * inv = 1 mod 2^4.
            uint256 inverse = (3 * denominator) ^ 2;

            // Use the Newton-Raphson iteration to improve the precision. Thanks to Hensel's lifting lemma, this also works
            // in modular arithmetic, doubling the correct bits in each step.
            inverse *= 2 - denominator * inverse; // inverse mod 2^8
            inverse *= 2 - denominator * inverse; // inverse mod 2^16
            inverse *= 2 - denominator * inverse; // inverse mod 2^32
            inverse *= 2 - denominator * inverse; // inverse mod 2^64
            inverse *= 2 - denominator * inverse; // inverse mod 2^128
            inverse *= 2 - denominator * inverse; // inverse mod 2^256

            // Because the division is now exact we can divide by multiplying with the modular inverse of denominator.
            // This will give us the correct result modulo 2^256. Since the preconditions guarantee that the outcome is
            // less than 2^256, this is the final result. We don't need to compute the high bits of the result and prod1
            // is no longer required.
            result = prod0 * inverse;
            return result;
        }
    }

    /**
     * @notice Calculates x * y / denominator with full precision, following the selected rounding direction.
     */
    function mulDiv(uint256 x, uint256 y, uint256 denominator, Rounding rounding) internal pure returns (uint256) {
        uint256 result = mulDiv(x, y, denominator);
        if (rounding == Rounding.Up && mulmod(x, y, denominator) > 0) {
            result += 1;
        }
        return result;
    }

    /**
     * @dev Returns the square root of a number. If the number is not a perfect square, the value is rounded down.
     *
     * Inspired by Henry S. Warren, Jr.'s "Hacker's Delight" (Chapter 11).
     */
    function sqrt(uint256 a) internal pure returns (uint256) {
        if (a == 0) {
            return 0;
        }

        // For our first guess, we get the biggest power of 2 which is smaller than the square root of the target.
        //
        // We know that the "msb" (most significant bit) of our target number `a` is a power of 2 such that we have
        // `msb(a) <= a < 2*msb(a)`. This value can be written `msb(a)=2**k` with `k=log2(a)`.
        //
        // This can be rewritten `2**log2(a) <= a < 2**(log2(a) + 1)`
        // → `sqrt(2**k) <= sqrt(a) < sqrt(2**(k+1))`
        // → `2**(k/2) <= sqrt(a) < 2**((k+1)/2) <= 2**(k/2 + 1)`
        //
        // Consequently, `2**(log2(a) / 2)` is a good first approximation of `sqrt(a)` with at least 1 correct bit.
        uint256 result = 1 << (log2(a) >> 1);

        // At this point `result` is an estimation with one bit of precision. We know the true value is a uint128,
        // since it is the square root of a uint256. Newton's method converges quadratically (precision doubles at
        // every iteration). We thus need at most 7 iteration to turn our partial result with one bit of precision
        // into the expected uint128 result.
        unchecked {
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            result = (result + a / result) >> 1;
            return min(result, a / result);
        }
    }

    /**
     * @notice Calculates sqrt(a), following the selected rounding direction.
     */
    function sqrt(uint256 a, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = sqrt(a);
            return result + (rounding == Rounding.Up && result * result < a ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 2, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 128;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 64;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 32;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 16;
            }
            if (value >> 8 > 0) {
                value >>= 8;
                result += 8;
            }
            if (value >> 4 > 0) {
                value >>= 4;
                result += 4;
            }
            if (value >> 2 > 0) {
                value >>= 2;
                result += 2;
            }
            if (value >> 1 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 2, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log2(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log2(value);
            return result + (rounding == Rounding.Up && 1 << result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 10, rounded down, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >= 10 ** 64) {
                value /= 10 ** 64;
                result += 64;
            }
            if (value >= 10 ** 32) {
                value /= 10 ** 32;
                result += 32;
            }
            if (value >= 10 ** 16) {
                value /= 10 ** 16;
                result += 16;
            }
            if (value >= 10 ** 8) {
                value /= 10 ** 8;
                result += 8;
            }
            if (value >= 10 ** 4) {
                value /= 10 ** 4;
                result += 4;
            }
            if (value >= 10 ** 2) {
                value /= 10 ** 2;
                result += 2;
            }
            if (value >= 10 ** 1) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 10, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log10(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log10(value);
            return result + (rounding == Rounding.Up && 10 ** result < value ? 1 : 0);
        }
    }

    /**
     * @dev Return the log in base 256, rounded down, of a positive value.
     * Returns 0 if given 0.
     *
     * Adding one to the result gives the number of pairs of hex symbols needed to represent `value` as a hex string.
     */
    function log256(uint256 value) internal pure returns (uint256) {
        uint256 result = 0;
        unchecked {
            if (value >> 128 > 0) {
                value >>= 128;
                result += 16;
            }
            if (value >> 64 > 0) {
                value >>= 64;
                result += 8;
            }
            if (value >> 32 > 0) {
                value >>= 32;
                result += 4;
            }
            if (value >> 16 > 0) {
                value >>= 16;
                result += 2;
            }
            if (value >> 8 > 0) {
                result += 1;
            }
        }
        return result;
    }

    /**
     * @dev Return the log in base 256, following the selected rounding direction, of a positive value.
     * Returns 0 if given 0.
     */
    function log256(uint256 value, Rounding rounding) internal pure returns (uint256) {
        unchecked {
            uint256 result = log256(value);
            return result + (rounding == Rounding.Up && 1 << (result << 3) < value ? 1 : 0);
        }
    }
}

File 18 of 18 : SignedMath.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.8.0) (utils/math/SignedMath.sol)

pragma solidity ^0.8.0;

/**
 * @dev Standard signed math utilities missing in the Solidity language.
 */
library SignedMath {
    /**
     * @dev Returns the largest of two signed numbers.
     */
    function max(int256 a, int256 b) internal pure returns (int256) {
        return a > b ? a : b;
    }

    /**
     * @dev Returns the smallest of two signed numbers.
     */
    function min(int256 a, int256 b) internal pure returns (int256) {
        return a < b ? a : b;
    }

    /**
     * @dev Returns the average of two signed numbers without overflow.
     * The result is rounded towards zero.
     */
    function average(int256 a, int256 b) internal pure returns (int256) {
        // Formula from the book "Hacker's Delight"
        int256 x = (a & b) + ((a ^ b) >> 1);
        return x + (int256(uint256(x) >> 255) & (a ^ b));
    }

    /**
     * @dev Returns the absolute unsigned value of a signed value.
     */
    function abs(int256 n) internal pure returns (uint256) {
        unchecked {
            // must be unchecked in order to support `n = type(int256).min`
            return uint256(n >= 0 ? n : -n);
        }
    }
}

Settings
{
  "remappings": [
    "forge-std/=lib/forge-std/src/",
    "solmate/=lib/solmate/src/",
    "@uniswap/v3-periphery/=lib/v3-periphery/",
    "@uniswap/v3-core/=lib/v3-core/",
    "@uniswap/swap-contracts/=lib/swap-router-contracts/contracts/",
    "decent-bridge/=lib/decent-bridge/",
    "better-deployer/=lib/decent-bridge/lib/better-deployer/src/",
    "forge-toolkit/=lib/forge-toolkit/src/",
    "openzeppelin-contracts/=lib/decent-bridge/lib/openzeppelin-contracts/contracts/",
    "solidity-examples/=lib/solidity-examples/contracts/",
    "@openzeppelin/=lib/decent-bridge/lib/openzeppelin-contracts/",
    "@openzeppelin/contracts/=lib/decent-bridge/lib/openzeppelin-contracts/contracts/",
    "LayerZero/=lib/forge-toolkit/lib/LayerZero/contracts/",
    "ds-test/=lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/decent-bridge/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "openzeppelin/=lib/decent-bridge/lib/openzeppelin-contracts/contracts/",
    "solidity-stringutils/=lib/decent-bridge/lib/solidity-stringutils/",
    "swap-router-contracts/=lib/swap-router-contracts/contracts/",
    "v3-core/=lib/v3-core/",
    "v3-periphery/=lib/v3-periphery/contracts/",
    "lib/forge-std:ds-test/=lib/decent-bridge/lib/forge-std/lib/ds-test/src/",
    "lib/openzeppelin-contracts:ds-test/=lib/decent-bridge/lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
    "lib/openzeppelin-contracts:erc4626-tests/=lib/decent-bridge/lib/openzeppelin-contracts/lib/erc4626-tests/",
    "lib/openzeppelin-contracts:forge-std/=lib/decent-bridge/lib/openzeppelin-contracts/lib/forge-std/src/",
    "lib/openzeppelin-contracts:openzeppelin/=lib/decent-bridge/lib/openzeppelin-contracts/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "paris",
  "viaIR": false,
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address payable","name":"_wethAddress","type":"address"},{"internalType":"bool","name":"gasIsEth","type":"bool"},{"internalType":"address","name":"_executor","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"InsufficientBalance","type":"error"},{"inputs":[],"name":"NotEnoughReserves","type":"error"},{"inputs":[],"name":"OnlyBridgeOperator","type":"error"},{"inputs":[],"name":"OnlyEthChain","type":"error"},{"inputs":[],"name":"OnlyLzApp","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"uint8","name":"msgType","type":"uint8"},{"indexed":false,"internalType":"uint16","name":"_srcChainId","type":"uint16"},{"indexed":false,"internalType":"address","name":"from","type":"address"},{"indexed":false,"internalType":"address","name":"_to","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"payload","type":"bytes"}],"name":"ReceivedDecentEth","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"previousAdminRole","type":"bytes32"},{"indexed":true,"internalType":"bytes32","name":"newAdminRole","type":"bytes32"}],"name":"RoleAdminChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleGranted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"role","type":"bytes32"},{"indexed":true,"internalType":"address","name":"account","type":"address"},{"indexed":true,"internalType":"address","name":"sender","type":"address"}],"name":"RoleRevoked","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"BRIDGE_OPERATOR_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MT_ETH_TRANSFER","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"MT_ETH_TRANSFER_WITH_PAYLOAD","outputs":[{"internalType":"uint8","name":"","type":"uint8"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"PT_SEND_AND_CALL","outputs":[{"internalType":"uint16","name":"","type":"uint16"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"address","name":"_routerAddress","type":"address"}],"name":"addDestinationBridge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"addLiquidityEth","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint256","name":"amount","type":"uint256"}],"name":"addLiquidityWeth","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"balanceOf","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"address","name":"_toAddress","type":"address"},{"internalType":"address","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_dstGasForCall","type":"uint64"},{"internalType":"bool","name":"deliverEth","type":"bool"}],"name":"bridge","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"address","name":"_toAddress","type":"address"},{"internalType":"address","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"bool","name":"deliverEth","type":"bool"},{"internalType":"uint64","name":"_dstGasForCall","type":"uint64"},{"internalType":"bytes","name":"additionalPayload","type":"bytes"}],"name":"bridgeWithPayload","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"dcntEth","outputs":[{"internalType":"contract IDcntEth","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint16","name":"","type":"uint16"}],"name":"destinationBridges","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"msgType","type":"uint8"},{"internalType":"uint16","name":"_dstChainId","type":"uint16"},{"internalType":"address","name":"_toAddress","type":"address"},{"internalType":"address","name":"_refundAddress","type":"address"},{"internalType":"uint256","name":"_amount","type":"uint256"},{"internalType":"uint64","name":"_dstGasForCall","type":"uint64"},{"internalType":"bool","name":"deliverEth","type":"bool"},{"internalType":"bytes","name":"payload","type":"bytes"}],"name":"estimateSendAndCallFee","outputs":[{"internalType":"uint256","name":"nativeFee","type":"uint256"},{"internalType":"uint256","name":"zroFee","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"executor","outputs":[{"internalType":"contract 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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

000000000000000000000000420000000000000000000000000000000000000600000000000000000000000000000000000000000000000000000000000000010000000000000000000000000eb3c930944951876e2e7be8b8fe4759ffd6fb44

-----Decoded View---------------
Arg [0] : _wethAddress (address): 0x4200000000000000000000000000000000000006
Arg [1] : gasIsEth (bool): True
Arg [2] : _executor (address): 0x0eb3c930944951876E2E7Be8B8fE4759FFd6fb44

-----Encoded View---------------
3 Constructor Arguments found :
Arg [0] : 0000000000000000000000004200000000000000000000000000000000000006
Arg [1] : 0000000000000000000000000000000000000000000000000000000000000001
Arg [2] : 0000000000000000000000000eb3c930944951876e2e7be8b8fe4759ffd6fb44


Block Transaction Difficulty Gas Used Reward
Block Uncle Number Difficulty Gas Used Reward
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