ETH Price: $3,178.07 (+1.42%)
Gas: 5 Gwei

Contract

0xB26B207de8478b85dB7951E3cA3f39f2a6f5DAD5
 

Overview

ETH Balance

0 ETH

Eth Value

$0.00

Token Holdings

Transaction Hash
Method
Block
From
To
Bridge And Execu...203005062024-07-13 22:16:112 hrs ago1720908971IN
0xB26B207d...2a6f5DAD5
1.02748096 ETH0.000969032.11239401
Swap And Execute202999342024-07-13 20:21:114 hrs ago1720902071IN
0xB26B207d...2a6f5DAD5
0.485088 ETH0.000650271.78713347
Swap And Execute202999302024-07-13 20:20:234 hrs ago1720902023IN
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0.30072 ETH0.000732831.93157679
Swap And Execute202999172024-07-13 20:17:474 hrs ago1720901867IN
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0.00012017 ETH0.000590161.95635461
Bridge And Execu...202996522024-07-13 19:24:475 hrs ago1720898687IN
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0.00778505 ETH0.000971122.07911245
Bridge And Execu...202987362024-07-13 16:20:478 hrs ago1720887647IN
0xB26B207d...2a6f5DAD5
0.00040532 ETH0.001175812.48210334
Bridge And Execu...202972992024-07-13 11:30:2313 hrs ago1720870223IN
0xB26B207d...2a6f5DAD5
0.03273636 ETH0.000878951.77422638
Bridge And Execu...202963612024-07-13 8:22:2316 hrs ago1720858943IN
0xB26B207d...2a6f5DAD5
0.00808713 ETH0.000905121.93776412
Bridge And Execu...202960932024-07-13 7:28:3517 hrs ago1720855715IN
0xB26B207d...2a6f5DAD5
0.00123655 ETH0.00101921.77879098
Bridge And Execu...202935152024-07-12 22:49:1125 hrs ago1720824551IN
0xB26B207d...2a6f5DAD5
0.15069306 ETH0.001260812.62664664
Bridge And Execu...202931412024-07-12 21:33:4727 hrs ago1720820027IN
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0.00825008 ETH0.001020872.18558779
Bridge And Execu...202928352024-07-12 20:32:3528 hrs ago1720816355IN
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0.00469114 ETH0.002298324.68377255
Bridge And Execu...202926332024-07-12 19:51:4728 hrs ago1720813907IN
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0.02310346 ETH0.001460453.1273157
Bridge And Execu...202925982024-07-12 19:44:4729 hrs ago1720813487IN
0xB26B207d...2a6f5DAD5
0.01173706 ETH0.001430853.06399831
Bridge And Execu...202925802024-07-12 19:41:1129 hrs ago1720813271IN
0xB26B207d...2a6f5DAD5
0.00071582 ETH0.001283762.75078856
Bridge And Execu...202923142024-07-12 18:47:4729 hrs ago1720810067IN
0xB26B207d...2a6f5DAD5
0.00049127 ETH0.00236973.93500167
Bridge And Execu...202922472024-07-12 18:34:2330 hrs ago1720809263IN
0xB26B207d...2a6f5DAD5
0.00049086 ETH0.001935043.24498894
Bridge And Execu...202922252024-07-12 18:29:4730 hrs ago1720808987IN
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0.0004909 ETH0.002030313.3987664
Bridge And Execu...202918732024-07-12 17:19:1131 hrs ago1720804751IN
0xB26B207d...2a6f5DAD5
0.00469253 ETH0.002455585.00364934
Bridge And Execu...202918522024-07-12 17:14:5931 hrs ago1720804499IN
0xB26B207d...2a6f5DAD5
0.00469167 ETH0.002411724.91426576
Bridge And Execu...202913552024-07-12 15:35:3533 hrs ago1720798535IN
0xB26B207d...2a6f5DAD5
0.01125851 ETH0.003312237.22360159
Bridge And Execu...202902942024-07-12 12:03:1136 hrs ago1720785791IN
0xB26B207d...2a6f5DAD5
0.00469028 ETH0.00152853.11456512
Bridge And Execu...202902872024-07-12 12:01:4736 hrs ago1720785707IN
0xB26B207d...2a6f5DAD5
0.00049097 ETH0.001603072.68326773
Bridge And Execu...202880402024-07-12 4:28:1144 hrs ago1720758491IN
0xB26B207d...2a6f5DAD5
0.01123296 ETH0.00226945
Bridge And Execu...202879442024-07-12 4:08:5944 hrs ago1720757339IN
0xB26B207d...2a6f5DAD5
0.00041344 ETH0.000862651.82097908
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Latest 25 internal transactions (View All)

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Parent Transaction Hash Block From To
203005062024-07-13 22:16:112 hrs ago1720908971
0xB26B207d...2a6f5DAD5
1.02531096 ETH
203005062024-07-13 22:16:112 hrs ago1720908971
0xB26B207d...2a6f5DAD5
1.025 ETH
203005062024-07-13 22:16:112 hrs ago1720908971
0xB26B207d...2a6f5DAD5
1.025 ETH
203005062024-07-13 22:16:112 hrs ago1720908971
0xB26B207d...2a6f5DAD5
0.00085 ETH
203005062024-07-13 22:16:112 hrs ago1720908971
0xB26B207d...2a6f5DAD5
0.00132 ETH
203004892024-07-13 22:12:472 hrs ago1720908767
0xB26B207d...2a6f5DAD5
1.044 ETH
203004892024-07-13 22:12:472 hrs ago1720908767
0xB26B207d...2a6f5DAD5
1.044 ETH
202999342024-07-13 20:21:114 hrs ago1720902071
0xB26B207d...2a6f5DAD5
0.484 ETH
202999342024-07-13 20:21:114 hrs ago1720902071
0xB26B207d...2a6f5DAD5
0.0004172 ETH
202999342024-07-13 20:21:114 hrs ago1720902071
0xB26B207d...2a6f5DAD5
0.0006708 ETH
202999302024-07-13 20:20:234 hrs ago1720902023
0xB26B207d...2a6f5DAD5
0.3 ETH
202999302024-07-13 20:20:234 hrs ago1720902023
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0.00027 ETH
202999302024-07-13 20:20:234 hrs ago1720902023
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0.00045 ETH
202999172024-07-13 20:17:474 hrs ago1720901867
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0.10132985 ETH
202999172024-07-13 20:17:474 hrs ago1720901867
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0.10132985 ETH
202999172024-07-13 20:17:474 hrs ago1720901867
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0.00003007 ETH
202999172024-07-13 20:17:474 hrs ago1720901867
0xB26B207d...2a6f5DAD5
0.0000901 ETH
202996522024-07-13 19:24:475 hrs ago1720898687
0xB26B207d...2a6f5DAD5
0.00773117 ETH
202996522024-07-13 19:24:475 hrs ago1720898687
0xB26B207d...2a6f5DAD5
0.00740018 ETH
202996522024-07-13 19:24:475 hrs ago1720898687
0xB26B207d...2a6f5DAD5
0.00740018 ETH
202996522024-07-13 19:24:475 hrs ago1720898687
0xB26B207d...2a6f5DAD5
0.00005388 ETH
202987362024-07-13 16:20:478 hrs ago1720887647
0xB26B207d...2a6f5DAD5
0.00036024 ETH
202987362024-07-13 16:20:478 hrs ago1720887647
0xB26B207d...2a6f5DAD5
0.00007104 ETH
202987362024-07-13 16:20:478 hrs ago1720887647
0xB26B207d...2a6f5DAD5
0.00007104 ETH
202987362024-07-13 16:20:478 hrs ago1720887647
0xB26B207d...2a6f5DAD5
0.00004508 ETH
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Contract Source Code Verified (Exact Match)

Contract Name:
UTB

Compiler Version
v0.8.20+commit.a1b79de6

Optimization Enabled:
Yes with 200 runs

Other Settings:
paris EvmVersion
File 1 of 24 : UTB.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

import {Roles} from "decent-bridge/src/utils/Roles.sol";
import {SwapParams} from "./swappers/SwapParams.sol";
import {IUTB} from "./interfaces/IUTB.sol";
import {IUTBExecutor} from "./interfaces/IUTBExecutor.sol";
import {IERC20} from "openzeppelin-contracts/interfaces/IERC20.sol";
import {SafeERC20} from "openzeppelin-contracts/token/ERC20/utils/SafeERC20.sol";
import {IWETH} from "decent-bridge/src/interfaces/IWETH.sol";
import {IUTBFeeManager} from "./interfaces/IUTBFeeManager.sol";
import {IBridgeAdapter} from "./interfaces/IBridgeAdapter.sol";
import {ISwapper} from "./interfaces/ISwapper.sol";
import {SwapInstructions, FeeData, Fee, BridgeInstructions, SwapAndExecuteInstructions} from "./CommonTypes.sol";


contract UTB is IUTB, Roles {
    constructor() Roles(msg.sender) {}

    IUTBExecutor public executor;
    IUTBFeeManager public feeManager;
    IWETH public wrapped;
    mapping(uint8 => address) public swappers;
    mapping(uint8 => address) public bridgeAdapters;
    bool public isActive = true;

    /**
     * @dev only support calling swapAndExecute and bridgeAndExecute if active
     */
    modifier isUtbActive() {
        if (!isActive) revert UTBPaused();
        _;
    }

    /**
     * @dev Transfers fees from the sender to the fee recipients.
     * @param feeData The bridge fee in native, as well as utb fee tokens and amounts.
     * @param packedInfo The fees and swap instructions which were used to generate the signature.
     * @param signature The ECDSA signature to verify the fee structure.
     */
    function _retrieveAndCollectFees(
        FeeData calldata feeData,
        bytes memory packedInfo,
        bytes calldata signature
    ) private returns (uint256 value) {
        if (address(feeManager) != address(0)) {
            feeManager.verifySignature(packedInfo, signature);
            value += feeData.bridgeFee;
            Fee[] memory fees = feeData.appFees;
            for (uint i = 0; i < fees.length; i++) {
                Fee memory fee = fees[i];
                if (fee.token != address(0)) {
                    SafeERC20.safeTransferFrom(
                        IERC20(fee.token),
                        msg.sender,
                        fee.recipient,
                        fee.amount
                    );
                } else {
                    (bool success, ) = address(fee.recipient).call{value: fee.amount}("");
                    value += fee.amount;
                    if (!success) revert ProtocolFeeCannotBeFetched();
                }
            }
        }
    }

    /**
     * @dev Refunds leftover native to the specified refund address.
     * @param to The address receiving the refund.
     * @param leftover The amount of leftover native.
     */
    function _refundLeftover(address to, uint256 leftover) internal {
        if (leftover > 0) {
            (bool success, ) = to.call{value: leftover}("");
            require(success, "failed to refund leftover");
        }
    }

    /**
     * @dev Sets the executor.
     * @param _executor The address of the executor.
     */
    function setExecutor(address _executor) public onlyAdmin {
        executor = IUTBExecutor(_executor);
    }

    /**
     * @dev Sets the wrapped native token.
     * @param _wrapped The address of the wrapped token.
     */
    function setWrapped(address _wrapped) public onlyAdmin {
        wrapped = IWETH(_wrapped);
    }

    /**
     * @dev Sets the fee manager.
     * @param _feeManager The address of the fee manager.
     */
    function setFeeManager(address _feeManager) public onlyAdmin {
        feeManager = IUTBFeeManager(_feeManager);
    }

    /**
     * @dev toggles active state
     */
    function toggleActive() public onlyAdmin {
        isActive = !isActive;
    }

    /**
     * @dev Performs a swap with the requested swapper and swap calldata.
     * @param swapInstructions The swapper ID and calldata to execute a swap.
     * @param retrieveTokenIn Flag indicating whether to transfer ERC20 for the swap.
     */
    function performSwap(
        SwapInstructions memory swapInstructions,
        bool retrieveTokenIn
    ) private returns (address tokenOut, uint256 amountOut, uint256 value) {
        ISwapper swapper = ISwapper(swappers[swapInstructions.swapperId]);

        SwapParams memory swapParams = abi.decode(
            swapInstructions.swapPayload,
            (SwapParams)
        );

        if (swapParams.tokenIn == address(0)) {
            if (msg.value < swapParams.amountIn) revert NotEnoughNative();
            wrapped.deposit{value: swapParams.amountIn}();
            value += swapParams.amountIn;
            swapParams.tokenIn = address(wrapped);
            swapInstructions.swapPayload = swapper.updateSwapParams(
                swapParams,
                swapInstructions.swapPayload
            );
        } else if (retrieveTokenIn) {
            SafeERC20.safeTransferFrom(
                IERC20(swapParams.tokenIn),
                msg.sender,
                address(this),
                swapParams.amountIn
            );
        }

        SafeERC20.forceApprove(
            IERC20(swapParams.tokenIn),
            address(swapper),
            swapParams.amountIn
        );

        (tokenOut, amountOut) = swapper.swap(swapInstructions.swapPayload);

        if (tokenOut == address(0)) {
            wrapped.withdraw(amountOut);
        }
    }

    /// @inheritdoc IUTB
    function swapAndExecute(
        SwapAndExecuteInstructions calldata instructions,
        FeeData calldata feeData,
        bytes calldata signature
    )
        public
        payable
        isUtbActive
    {
        uint256 value = _retrieveAndCollectFees(feeData, abi.encode(instructions, feeData), signature);
        value += _swapAndExecute(
            instructions.swapInstructions,
            instructions.target,
            instructions.paymentOperator,
            instructions.payload,
            instructions.refund
        );
        _refundLeftover(instructions.refund, msg.value - value);
        emit Swapped();
    }

    /**
     * @dev Swaps currency from the incoming to the outgoing token and executes a transaction with payment.
     * @param swapInstructions The swapper ID and calldata to execute a swap.
     * @param target The address of the target contract for the payment transaction.
     * @param paymentOperator The operator address for payment transfers requiring ERC20 approvals.
     * @param payload The calldata to execute the payment transaction.
     * @param refund The account receiving any refunds, typically the EOA which initiated the transaction.
     */
    function _swapAndExecute(
        SwapInstructions memory swapInstructions,
        address target,
        address paymentOperator,
        bytes memory payload,
        address refund
    ) private returns (uint256 value) {
        address tokenOut;
        uint256 amountOut;
        (tokenOut, amountOut, value) = performSwap(swapInstructions, true);
        if (tokenOut == address(0)) {
            executor.execute{value: amountOut}(
                target,
                paymentOperator,
                payload,
                tokenOut,
                amountOut,
                refund
            );
        } else {
            SafeERC20.forceApprove(IERC20(tokenOut), address(executor), amountOut);
            executor.execute(
                target,
                paymentOperator,
                payload,
                tokenOut,
                amountOut,
                refund
            );
        }
    }

    /**
     * @dev Performs the pre bridge swap and modifies the post bridge swap to utilize the bridged amount.
     * @param instructions The bridge data, token swap data, and payment transaction payload.
     */
    function swapAndModifyPostBridge(
        BridgeInstructions memory instructions
    )
        private
        returns (
            uint256 amount2Bridge,
            BridgeInstructions memory updatedInstructions,
            uint256 value
        )
    {
        address tokenOut;
        uint256 amountOut;
        (tokenOut, amountOut, value) = performSwap(
            instructions.preBridge, true
        );

        SwapParams memory newPostSwapParams = abi.decode(
            instructions.postBridge.swapPayload,
            (SwapParams)
        );

        newPostSwapParams.amountIn = IBridgeAdapter(
            bridgeAdapters[instructions.bridgeId]
        ).getBridgedAmount(amountOut, tokenOut, newPostSwapParams.tokenIn, instructions.additionalArgs);

        updatedInstructions = instructions;

        updatedInstructions.postBridge.swapPayload = ISwapper(swappers[
            instructions.postBridge.swapperId
        ]).updateSwapParams(
            newPostSwapParams,
            instructions.postBridge.swapPayload
        );

        amount2Bridge = amountOut;
    }

    /**
     * @dev Checks if the bridge token is native, and approves the bridge adapter to transfer ERC20 if required.
     * @param instructions The bridge data, token swap data, and payment transaction payload.
     * @param amt2Bridge The amount of the bridge token being transferred to the bridge adapter.
     */
    function approveAndCheckIfNative(
        BridgeInstructions memory instructions,
        uint256 amt2Bridge
    ) private returns (bool) {
        IBridgeAdapter bridgeAdapter = IBridgeAdapter(bridgeAdapters[instructions.bridgeId]);
        address bridgeToken = bridgeAdapter.getBridgeToken(
            instructions.additionalArgs
        );
        if (bridgeToken != address(0)) {
            SafeERC20.forceApprove(IERC20(bridgeToken), address(bridgeAdapter), amt2Bridge);
            return false;
        }
        return true;
    }

    /// @inheritdoc IUTB
    function bridgeAndExecute(
        BridgeInstructions calldata instructions,
        FeeData calldata feeData,
        bytes calldata signature
    )
        public
        payable
        isUtbActive
        returns (bytes memory)
    {
        uint256 feeValue = _retrieveAndCollectFees(feeData, abi.encode(instructions, feeData), signature);

        (
            uint256 amt2Bridge,
            BridgeInstructions memory updatedInstructions,
            uint256 swapValue
        ) = swapAndModifyPostBridge(instructions);

        _refundLeftover(instructions.refund, msg.value - feeValue - swapValue);

        return callBridge(amt2Bridge, feeData.bridgeFee, updatedInstructions);
    }

    /**
     * @dev Calls the bridge adapter to bridge funds, and approves the bridge adapter to transfer ERC20 if required.
     * @param amt2Bridge The amount of the bridge token being bridged via the bridge adapter.
     * @param bridgeFee The fee being transferred to the bridge adapter and finally to the bridge.
     * @param instructions The bridge data, token swap data, and payment transaction payload.
     */
    function callBridge(
        uint256 amt2Bridge,
        uint bridgeFee,
        BridgeInstructions memory instructions
    ) private returns (bytes memory) {
        bool native = approveAndCheckIfNative(instructions, amt2Bridge);
        emit BridgeCalled();
        return
            IBridgeAdapter(bridgeAdapters[instructions.bridgeId]).bridge{
                value: bridgeFee + (native ? amt2Bridge : 0)
            }(
                amt2Bridge,
                instructions.postBridge,
                instructions.dstChainId,
                instructions.target,
                instructions.paymentOperator,
                instructions.payload,
                instructions.additionalArgs,
                instructions.refund
            );
    }

    /// @inheritdoc IUTB
    function receiveFromBridge(
        SwapInstructions memory postBridge,
        address target,
        address paymentOperator,
        bytes memory payload,
        address refund,
        uint8 bridgeId
    ) public payable {
        if (msg.sender != bridgeAdapters[bridgeId]) revert OnlyBridgeAdapter();
        emit RecievedFromBridge();
        _swapAndExecute(postBridge, target, paymentOperator, payload, refund);
    }

    /// @inheritdoc IUTB
    function registerSwapper(address swapper) public onlyAdmin {
        ISwapper s = ISwapper(swapper);
        swappers[s.getId()] = swapper;
    }

    /// @inheritdoc IUTB
    function registerBridge(address bridge) public onlyAdmin {
        IBridgeAdapter b = IBridgeAdapter(bridge);
        bridgeAdapters[b.getId()] = bridge;
    }

    receive() external payable {}

    fallback() external payable {}
}

File 2 of 24 : Roles.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.13;
import {AccessControl} from "@openzeppelin/contracts/access/AccessControl.sol";

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

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

File 3 of 24 : SwapParams.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

library SwapDirection {
    uint8 constant EXACT_IN = 0;
    uint8 constant EXACT_OUT = 1;
}

struct SwapParams {
    uint256 amountIn;
    uint256 amountOut;
    address tokenIn;
    address tokenOut;
    uint8 direction;
    // if direction is exactAmountIn
    // then amount out will be the minimum amount out
    // if direction is exactAmountOutA
    // then amount in is maximum amount in
    bytes path;
}

File 4 of 24 : IUTB.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

import {SwapInstructions, FeeData, BridgeInstructions, SwapAndExecuteInstructions} from "../CommonTypes.sol";

interface IUTB {

    event Swapped();
    event BridgeCalled();
    event RecievedFromBridge();

    /// @notice Thrown when protocol fees cannot be collected
    error ProtocolFeeCannotBeFetched();

    /// @notice Thrown when UTB is paused
    error UTBPaused();

    /// @notice Thrown when not enough native is passed for swap
    error NotEnoughNative();

    /// @notice Thrown when receive from bridge is not called from a bridge adapter
    error OnlyBridgeAdapter();

    /**
     * @dev Swaps currency from the incoming to the outgoing token and executes a transaction with payment.
     * @param instructions The token swap data and payment transaction payload.
     * @param feeData The bridge fee in native, as well as utb fee tokens and amounts.
     * @param signature The ECDSA signature to verify the fee structure.
     */
    function swapAndExecute(
        SwapAndExecuteInstructions memory instructions,
        FeeData memory feeData,
        bytes memory signature
    ) external payable;

    /**
     * @dev Bridges funds in native or ERC20 and a payment transaction payload to the destination chain
     * @param instructions The bridge data, token swap data, and payment transaction payload.
     * @param feeData The bridge fee in native, as well as utb fee tokens and amounts.
     * @param signature The ECDSA signature to verify the fee structure.
     */
    function bridgeAndExecute(
        BridgeInstructions memory instructions,
        FeeData memory feeData,
        bytes memory signature
    ) external payable returns (bytes memory);

    /**
     * @dev Receives funds from the bridge adapter, executes a swap, and executes a payment transaction.
     * @param postBridge The swapper ID and calldata to execute a swap.
     * @param target The address of the target contract for the payment transaction.
     * @param paymentOperator The operator address for payment transfers requiring ERC20 approvals.
     * @param payload The calldata to execute the payment transaction.
     * @param refund The account receiving any refunds, typically the EOA which initiated the transaction.
     */
    function receiveFromBridge(
        SwapInstructions memory postBridge,
        address target,
        address paymentOperator,
        bytes memory payload,
        address refund,
        uint8 bridgeId
    ) external payable;

    /**
     * @dev Registers and maps a bridge adapter to a bridge adapter ID.
     * @param bridge The address of the bridge adapter.
     */
    function registerBridge(address bridge) external;

    /**
     * @dev Registers and maps a swapper to a swapper ID.
     * @param swapper The address of the swapper.
     */
    function registerSwapper(address swapper) external;

    function setExecutor(address _executor) external;

    function setFeeManager(address _feeManager) external;

    function setWrapped(address _wrapped) external;
}

File 5 of 24 : IUTBExecutor.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

interface IUTBExecutor {

    /**
     * @dev Executes a payment transaction with native OR ERC20.
     * @param target The address of the target contract for the payment transaction.
     * @param paymentOperator The operator address for payment transfers requiring ERC20 approvals.
     * @param payload The calldata to execute the payment transaction.
     * @param token The token being transferred, zero address for native.
     * @param amount The amount of native or ERC20 being sent with the payment transaction.
     * @param refund The account receiving any refunds, typically the EOA that initiated the transaction.
     */
    function execute(
        address target,
        address paymentOperator,
        bytes memory payload,
        address token,
        uint256 amount,
        address refund
    ) external payable;

    /**
     * @dev Executes a payment transaction with native AND/OR ERC20.
     * @param target The address of the target contract for the payment transaction.
     * @param paymentOperator The operator address for payment transfers requiring ERC20 approvals.
     * @param payload The calldata to execute the payment transaction.
     * @param token The token being transferred, zero address for native.
     * @param amount The amount of native or ERC20 being sent with the payment transaction.
     * @param refund The account receiving any refunds, typically the EOA that initiated the transaction.
     * @param extraNative Forwards additional gas or native fees required to executing the payment transaction.
     */
    function execute(
        address target,
        address paymentOperator,
        bytes memory payload,
        address token,
        uint256 amount,
        address refund,
        uint256 extraNative
    ) external;
}

File 6 of 24 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (interfaces/IERC20.sol)

pragma solidity ^0.8.0;

import "../token/ERC20/IERC20.sol";

File 7 of 24 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.3) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.0;

import "../IERC20.sol";
import "../extensions/IERC20Permit.sol";
import "../../../utils/Address.sol";

/**
 * @title SafeERC20
 * @dev Wrappers around ERC20 operations that throw on failure (when the token
 * contract returns false). Tokens that return no value (and instead revert or
 * throw on failure) are also supported, non-reverting calls are assumed to be
 * successful.
 * To use this library you can add a `using SafeERC20 for IERC20;` statement to your contract,
 * which allows you to call the safe operations as `token.safeTransfer(...)`, etc.
 */
library SafeERC20 {
    using Address for address;

    /**
     * @dev Transfer `value` amount of `token` from the calling contract to `to`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeTransfer(IERC20 token, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    /**
     * @dev Transfer `value` amount of `token` from `from` to `to`, spending the approval given by `from` to the
     * calling contract. If `token` returns no value, non-reverting calls are assumed to be successful.
     */
    function safeTransferFrom(IERC20 token, address from, address to, uint256 value) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transferFrom.selector, from, to, value));
    }

    /**
     * @dev Deprecated. This function has issues similar to the ones found in
     * {IERC20-approve}, and its usage is discouraged.
     *
     * Whenever possible, use {safeIncreaseAllowance} and
     * {safeDecreaseAllowance} instead.
     */
    function safeApprove(IERC20 token, address spender, uint256 value) internal {
        // safeApprove should only be called when setting an initial allowance,
        // or when resetting it to zero. To increase and decrease it, use
        // 'safeIncreaseAllowance' and 'safeDecreaseAllowance'
        require(
            (value == 0) || (token.allowance(address(this), spender) == 0),
            "SafeERC20: approve from non-zero to non-zero allowance"
        );
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, value));
    }

    /**
     * @dev Increase the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeIncreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        uint256 oldAllowance = token.allowance(address(this), spender);
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance + value));
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 value) internal {
        unchecked {
            uint256 oldAllowance = token.allowance(address(this), spender);
            require(oldAllowance >= value, "SafeERC20: decreased allowance below zero");
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, oldAllowance - value));
        }
    }

    /**
     * @dev Set the calling contract's allowance toward `spender` to `value`. If `token` returns no value,
     * non-reverting calls are assumed to be successful. Meant to be used with tokens that require the approval
     * to be set to zero before setting it to a non-zero value, such as USDT.
     */
    function forceApprove(IERC20 token, address spender, uint256 value) internal {
        bytes memory approvalCall = abi.encodeWithSelector(token.approve.selector, spender, value);

        if (!_callOptionalReturnBool(token, approvalCall)) {
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, 0));
            _callOptionalReturn(token, approvalCall);
        }
    }

    /**
     * @dev Use a ERC-2612 signature to set the `owner` approval toward `spender` on `token`.
     * Revert on invalid signature.
     */
    function safePermit(
        IERC20Permit token,
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) internal {
        uint256 nonceBefore = token.nonces(owner);
        token.permit(owner, spender, value, deadline, v, r, s);
        uint256 nonceAfter = token.nonces(owner);
        require(nonceAfter == nonceBefore + 1, "SafeERC20: permit did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     */
    function _callOptionalReturn(IERC20 token, bytes memory data) private {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We use {Address-functionCall} to perform this call, which verifies that
        // the target address contains contract code and also asserts for success in the low-level call.

        bytes memory returndata = address(token).functionCall(data, "SafeERC20: low-level call failed");
        require(returndata.length == 0 || abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
    }

    /**
     * @dev Imitates a Solidity high-level call (i.e. a regular function call to a contract), relaxing the requirement
     * on the return value: the return value is optional (but if data is returned, it must not be false).
     * @param token The token targeted by the call.
     * @param data The call data (encoded using abi.encode or one of its variants).
     *
     * This is a variant of {_callOptionalReturn} that silents catches all reverts and returns a bool instead.
     */
    function _callOptionalReturnBool(IERC20 token, bytes memory data) private returns (bool) {
        // We need to perform a low level call here, to bypass Solidity's return data size checking mechanism, since
        // we're implementing it ourselves. We cannot use {Address-functionCall} here since this should return false
        // and not revert is the subcall reverts.

        (bool success, bytes memory returndata) = address(token).call(data);
        return
            success && (returndata.length == 0 || abi.decode(returndata, (bool))) && Address.isContract(address(token));
    }
}

File 8 of 24 : 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 9 of 24 : IUTBFeeManager.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

interface IUTBFeeManager {

    /// @notice Thrown if incorrect signature
    error WrongSig();

    /// @notice Thrown if sig length != 65
    error WrongSigLength();

    /**
     * @dev Verifies packed info containing fees in either native or ERC20.
     * @param packedInfo The fees and swap instructions used to generate the signature.
     * @param signature The ECDSA signature to verify the fee structure.
     */
    function verifySignature(
      bytes memory packedInfo,
      bytes memory signature
    ) external;

    /**
     * @dev Sets the signer used for fee verification.
     * @param _signer The address of the signer.
     */
    function setSigner(address _signer) external;
}

File 10 of 24 : IBridgeAdapter.sol
pragma solidity ^0.8.0;

import {SwapInstructions} from "../CommonTypes.sol";

interface IBridgeAdapter {

    error NoDstBridge();

    function getId() external returns (uint8);

    function getBridgeToken(
        bytes calldata additionalArgs
    ) external returns (address);

    function getBridgedAmount(
        uint256 amt2Bridge,
        address preBridgeToken,
        address postBridgeToken,
        bytes calldata additionalArgs
    ) external returns (uint256);

    function bridge(
        uint256 amt2Bridge,
        SwapInstructions memory postBridge,
        uint256 dstChainId,
        address target,
        address paymentOperator,
        bytes memory payload,
        bytes calldata additionalArgs,
        address refund
    ) external payable returns (bytes memory);
}

File 11 of 24 : ISwapper.sol
pragma solidity ^0.8.0;

import {SwapParams} from "../swappers/SwapParams.sol";

interface ISwapper {
    error RouterNotSet();

    function getId() external returns (uint8);

    function swap(
        bytes memory swapPayload
    ) external returns (address tokenOut, uint256 amountOut);

    function updateSwapParams(
        SwapParams memory newSwapParams,
        bytes memory payload
    ) external returns (bytes memory);
}

File 12 of 24 : CommonTypes.sol
// SPDX-License-Identifier: UNLICENSED
pragma solidity ^0.8.0;

struct SwapInstructions {
    uint8 swapperId;
    bytes swapPayload;
}

struct FeeData {
    bytes4 appId;
    bytes4 affiliateId;
    uint bridgeFee;
    Fee[] appFees;
}

struct Fee {
    address recipient;
    address token;
    uint amount;
}

struct SwapAndExecuteInstructions {
    SwapInstructions swapInstructions;
    address target;
    address paymentOperator;
    address refund;
    bytes payload;
}

struct BridgeInstructions {
    SwapInstructions preBridge;
    SwapInstructions postBridge;
    uint8 bridgeId;
    uint256 dstChainId;
    address target;
    address paymentOperator;
    address refund;
    bytes payload;
    bytes additionalArgs;
}

File 13 of 24 : 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 14 of 24 : IERC20.sol
// 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);
}

File 15 of 24 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC20 Permit extension allowing approvals to be made via signatures, as defined in
 * https://eips.ethereum.org/EIPS/eip-2612[EIP-2612].
 *
 * Adds the {permit} method, which can be used to change an account's ERC20 allowance (see {IERC20-allowance}) by
 * presenting a message signed by the account. By not relying on {IERC20-approve}, the token holder account doesn't
 * need to send a transaction, and thus is not required to hold Ether at all.
 */
interface IERC20Permit {
    /**
     * @dev Sets `value` as the allowance of `spender` over ``owner``'s tokens,
     * given ``owner``'s signed approval.
     *
     * IMPORTANT: The same issues {IERC20-approve} has related to transaction
     * ordering also apply here.
     *
     * Emits an {Approval} event.
     *
     * Requirements:
     *
     * - `spender` cannot be the zero address.
     * - `deadline` must be a timestamp in the future.
     * - `v`, `r` and `s` must be a valid `secp256k1` signature from `owner`
     * over the EIP712-formatted function arguments.
     * - the signature must use ``owner``'s current nonce (see {nonces}).
     *
     * For more information on the signature format, see the
     * https://eips.ethereum.org/EIPS/eip-2612#specification[relevant EIP
     * section].
     */
    function permit(
        address owner,
        address spender,
        uint256 value,
        uint256 deadline,
        uint8 v,
        bytes32 r,
        bytes32 s
    ) external;

    /**
     * @dev Returns the current nonce for `owner`. This value must be
     * included whenever a signature is generated for {permit}.
     *
     * Every successful call to {permit} increases ``owner``'s nonce by one. This
     * prevents a signature from being used multiple times.
     */
    function nonces(address owner) external view returns (uint256);

    /**
     * @dev Returns the domain separator used in the encoding of the signature for {permit}, as defined by {EIP712}.
     */
    // solhint-disable-next-line func-name-mixedcase
    function DOMAIN_SEPARATOR() external view returns (bytes32);
}

File 16 of 24 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (utils/Address.sol)

pragma solidity ^0.8.1;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev Returns true if `account` is a contract.
     *
     * [IMPORTANT]
     * ====
     * It is unsafe to assume that an address for which this function returns
     * false is an externally-owned account (EOA) and not a contract.
     *
     * Among others, `isContract` will return false for the following
     * types of addresses:
     *
     *  - an externally-owned account
     *  - a contract in construction
     *  - an address where a contract will be created
     *  - an address where a contract lived, but was destroyed
     *
     * Furthermore, `isContract` will also return true if the target contract within
     * the same transaction is already scheduled for destruction by `SELFDESTRUCT`,
     * which only has an effect at the end of a transaction.
     * ====
     *
     * [IMPORTANT]
     * ====
     * You shouldn't rely on `isContract` to protect against flash loan attacks!
     *
     * Preventing calls from contracts is highly discouraged. It breaks composability, breaks support for smart wallets
     * like Gnosis Safe, and does not provide security since it can be circumvented by calling from a contract
     * constructor.
     * ====
     */
    function isContract(address account) internal view returns (bool) {
        // This method relies on extcodesize/address.code.length, which returns 0
        // for contracts in construction, since the code is only stored at the end
        // of the constructor execution.

        return account.code.length > 0;
    }

    /**
     * @dev Replacement for Solidity's `transfer`: sends `amount` wei to
     * `recipient`, forwarding all available gas and reverting on errors.
     *
     * https://eips.ethereum.org/EIPS/eip-1884[EIP1884] increases the gas cost
     * of certain opcodes, possibly making contracts go over the 2300 gas limit
     * imposed by `transfer`, making them unable to receive funds via
     * `transfer`. {sendValue} removes this limitation.
     *
     * https://consensys.net/diligence/blog/2019/09/stop-using-soliditys-transfer-now/[Learn more].
     *
     * IMPORTANT: because control is transferred to `recipient`, care must be
     * taken to not create reentrancy vulnerabilities. Consider using
     * {ReentrancyGuard} or the
     * https://solidity.readthedocs.io/en/v0.8.0/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        require(address(this).balance >= amount, "Address: insufficient balance");

        (bool success, ) = recipient.call{value: amount}("");
        require(success, "Address: unable to send value, recipient may have reverted");
    }

    /**
     * @dev Performs a Solidity function call using a low level `call`. A
     * plain `call` is an unsafe replacement for a function call: use this
     * function instead.
     *
     * If `target` reverts with a revert reason, it is bubbled up by this
     * function (like regular Solidity function calls).
     *
     * Returns the raw returned data. To convert to the expected return value,
     * use https://solidity.readthedocs.io/en/latest/units-and-global-variables.html?highlight=abi.decode#abi-encoding-and-decoding-functions[`abi.decode`].
     *
     * Requirements:
     *
     * - `target` must be a contract.
     * - calling `target` with `data` must not revert.
     *
     * _Available since v3.1._
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, "Address: low-level call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`], but with
     * `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but also transferring `value` wei to `target`.
     *
     * Requirements:
     *
     * - the calling contract must have an ETH balance of at least `value`.
     * - the called Solidity function must be `payable`.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        return functionCallWithValue(target, data, value, "Address: low-level call with value failed");
    }

    /**
     * @dev Same as {xref-Address-functionCallWithValue-address-bytes-uint256-}[`functionCallWithValue`], but
     * with `errorMessage` as a fallback revert reason when `target` reverts.
     *
     * _Available since v3.1._
     */
    function functionCallWithValue(
        address target,
        bytes memory data,
        uint256 value,
        string memory errorMessage
    ) internal returns (bytes memory) {
        require(address(this).balance >= value, "Address: insufficient balance for call");
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(address target, bytes memory data) internal view returns (bytes memory) {
        return functionStaticCall(target, data, "Address: low-level static call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a static call.
     *
     * _Available since v3.3._
     */
    function functionStaticCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionDelegateCall(target, data, "Address: low-level delegate call failed");
    }

    /**
     * @dev Same as {xref-Address-functionCall-address-bytes-string-}[`functionCall`],
     * but performing a delegate call.
     *
     * _Available since v3.4._
     */
    function functionDelegateCall(
        address target,
        bytes memory data,
        string memory errorMessage
    ) internal returns (bytes memory) {
        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResultFromTarget(target, success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and revert (either by bubbling
     * the revert reason or using the provided one) in case of unsuccessful call or if target was not a contract.
     *
     * _Available since v4.8._
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal view returns (bytes memory) {
        if (success) {
            if (returndata.length == 0) {
                // only check isContract if the call was successful and the return data is empty
                // otherwise we already know that it was a contract
                require(isContract(target), "Address: call to non-contract");
            }
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason or using the provided one.
     *
     * _Available since v4.3._
     */
    function verifyCallResult(
        bool success,
        bytes memory returndata,
        string memory errorMessage
    ) internal pure returns (bytes memory) {
        if (success) {
            return returndata;
        } else {
            _revert(returndata, errorMessage);
        }
    }

    function _revert(bytes memory returndata, string memory errorMessage) private pure {
        // Look for revert reason and bubble it up if present
        if (returndata.length > 0) {
            // The easiest way to bubble the revert reason is using memory via assembly
            /// @solidity memory-safe-assembly
            assembly {
                let returndata_size := mload(returndata)
                revert(add(32, returndata), returndata_size)
            }
        } else {
            revert(errorMessage);
        }
    }
}

File 17 of 24 : 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 18 of 24 : 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 19 of 24 : 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 20 of 24 : 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 21 of 24 : 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 22 of 24 : 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 23 of 24 : 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);
        }
    }
}

File 24 of 24 : 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);
}

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":[],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"NotEnoughNative","type":"error"},{"inputs":[],"name":"OnlyBridgeAdapter","type":"error"},{"inputs":[],"name":"ProtocolFeeCannotBeFetched","type":"error"},{"inputs":[],"name":"UTBPaused","type":"error"},{"anonymous":false,"inputs":[],"name":"BridgeCalled","type":"event"},{"anonymous":false,"inputs":[],"name":"RecievedFromBridge","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"},{"anonymous":false,"inputs":[],"name":"Swapped","type":"event"},{"stateMutability":"payable","type":"fallback"},{"inputs":[],"name":"DEFAULT_ADMIN_ROLE","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"}],"name":"bridgeAdapters","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"uint8","name":"swapperId","type":"uint8"},{"internalType":"bytes","name":"swapPayload","type":"bytes"}],"internalType":"struct SwapInstructions","name":"preBridge","type":"tuple"},{"components":[{"internalType":"uint8","name":"swapperId","type":"uint8"},{"internalType":"bytes","name":"swapPayload","type":"bytes"}],"internalType":"struct SwapInstructions","name":"postBridge","type":"tuple"},{"internalType":"uint8","name":"bridgeId","type":"uint8"},{"internalType":"uint256","name":"dstChainId","type":"uint256"},{"internalType":"address","name":"target","type":"address"},{"internalType":"address","name":"paymentOperator","type":"address"},{"internalType":"address","name":"refund","type":"address"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"bytes","name":"additionalArgs","type":"bytes"}],"internalType":"struct BridgeInstructions","name":"instructions","type":"tuple"},{"components":[{"internalType":"bytes4","name":"appId","type":"bytes4"},{"internalType":"bytes4","name":"affiliateId","type":"bytes4"},{"internalType":"uint256","name":"bridgeFee","type":"uint256"},{"components":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct Fee[]","name":"appFees","type":"tuple[]"}],"internalType":"struct FeeData","name":"feeData","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"bridgeAndExecute","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"payable","type":"function"},{"inputs":[],"name":"executor","outputs":[{"internalType":"contract IUTBExecutor","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"feeManager","outputs":[{"internalType":"contract IUTBFeeManager","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"}],"name":"getRoleAdmin","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"grantRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"hasRole","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"isActive","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"internalType":"uint8","name":"swapperId","type":"uint8"},{"internalType":"bytes","name":"swapPayload","type":"bytes"}],"internalType":"struct SwapInstructions","name":"postBridge","type":"tuple"},{"internalType":"address","name":"target","type":"address"},{"internalType":"address","name":"paymentOperator","type":"address"},{"internalType":"bytes","name":"payload","type":"bytes"},{"internalType":"address","name":"refund","type":"address"},{"internalType":"uint8","name":"bridgeId","type":"uint8"}],"name":"receiveFromBridge","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"address","name":"bridge","type":"address"}],"name":"registerBridge","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"swapper","type":"address"}],"name":"registerSwapper","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"renounceRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"role","type":"bytes32"},{"internalType":"address","name":"account","type":"address"}],"name":"revokeRole","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_executor","type":"address"}],"name":"setExecutor","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_feeManager","type":"address"}],"name":"setFeeManager","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_wrapped","type":"address"}],"name":"setWrapped","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceId","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"components":[{"components":[{"internalType":"uint8","name":"swapperId","type":"uint8"},{"internalType":"bytes","name":"swapPayload","type":"bytes"}],"internalType":"struct SwapInstructions","name":"swapInstructions","type":"tuple"},{"internalType":"address","name":"target","type":"address"},{"internalType":"address","name":"paymentOperator","type":"address"},{"internalType":"address","name":"refund","type":"address"},{"internalType":"bytes","name":"payload","type":"bytes"}],"internalType":"struct SwapAndExecuteInstructions","name":"instructions","type":"tuple"},{"components":[{"internalType":"bytes4","name":"appId","type":"bytes4"},{"internalType":"bytes4","name":"affiliateId","type":"bytes4"},{"internalType":"uint256","name":"bridgeFee","type":"uint256"},{"components":[{"internalType":"address","name":"recipient","type":"address"},{"internalType":"address","name":"token","type":"address"},{"internalType":"uint256","name":"amount","type":"uint256"}],"internalType":"struct Fee[]","name":"appFees","type":"tuple[]"}],"internalType":"struct FeeData","name":"feeData","type":"tuple"},{"internalType":"bytes","name":"signature","type":"bytes"}],"name":"swapAndExecute","outputs":[],"stateMutability":"payable","type":"function"},{"inputs":[{"internalType":"uint8","name":"","type":"uint8"}],"name":"swappers","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"toggleActive","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"wrapped","outputs":[{"internalType":"contract IWETH","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"stateMutability":"payable","type":"receive"}]

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A contract address hosts a smart contract, which is a set of code stored on the blockchain that runs when predetermined conditions are met. Learn more about addresses in our Knowledge Base.