Contract 0x6260a58751fb7C1445e9208284eDf7114B9e3269 16

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import "../Libraries/LibStorage.sol";
import "../Libraries/LibDiamond.sol";
import { InvalidConfig } from "../Errors/GenericErrors.sol";

/// @title Dex Manager Facet
/// @author LI.FI (https://li.fi)
/// @notice Facet contract for managing approved DEXs to be used in swaps.
contract DexManagerFacet {
    /// Events ///

    event DexAdded(address indexed dexAddress);
    event DexRemoved(address indexed dexAddress);
    event FunctionSignatureApprovalChanged(bytes32 indexed functionSignature, bool indexed approved);

    /// Storage ///

    LibStorage internal appStorage;

    /// External Methods ///

    /// @notice Register the address of a DEX contract to be approved for swapping.
    /// @param _dex The address of the DEX contract to be approved.
    function addDex(address _dex) external {
        LibDiamond.enforceIsContractOwner();
        _checkAddress(_dex);

        mapping(address => bool) storage dexAllowlist = appStorage.dexAllowlist;
        if (dexAllowlist[_dex]) return;

        dexAllowlist[_dex] = true;
        appStorage.dexs.push(_dex);
        emit DexAdded(_dex);
    }

    /// @notice Batch register the addresss of DEX contracts to be approved for swapping.
    /// @param _dexs The addresses of the DEX contracts to be approved.
    function batchAddDex(address[] calldata _dexs) external {
        LibDiamond.enforceIsContractOwner();
        mapping(address => bool) storage dexAllowlist = appStorage.dexAllowlist;
        uint256 length = _dexs.length;

        for (uint256 i = 0; i < length; i++) {
            _checkAddress(_dexs[i]);
            if (dexAllowlist[_dexs[i]]) continue;
            dexAllowlist[_dexs[i]] = true;
            appStorage.dexs.push(_dexs[i]);
            emit DexAdded(_dexs[i]);
        }
    }

    /// @notice Unregister the address of a DEX contract approved for swapping.
    /// @param _dex The address of the DEX contract to be unregistered.
    function removeDex(address _dex) external {
        LibDiamond.enforceIsContractOwner();
        _checkAddress(_dex);

        mapping(address => bool) storage dexAllowlist = appStorage.dexAllowlist;
        address[] storage storageDexes = appStorage.dexs;

        if (!dexAllowlist[_dex]) {
            return;
        }
        dexAllowlist[_dex] = false;

        uint256 length = storageDexes.length;
        for (uint256 i = 0; i < length; i++) {
            if (storageDexes[i] == _dex) {
                _removeDex(i);
                return;
            }
        }
    }

    /// @notice Batch unregister the addresses of DEX contracts approved for swapping.
    /// @param _dexs The addresses of the DEX contracts to be unregistered.
    function batchRemoveDex(address[] calldata _dexs) external {
        LibDiamond.enforceIsContractOwner();
        mapping(address => bool) storage dexAllowlist = appStorage.dexAllowlist;
        address[] storage storageDexes = appStorage.dexs;

        uint256 ilength = _dexs.length;
        uint256 jlength = storageDexes.length;
        for (uint256 i = 0; i < ilength; i++) {
            _checkAddress(_dexs[i]);
            if (!dexAllowlist[_dexs[i]]) {
                continue;
            }
            dexAllowlist[_dexs[i]] = false;
            for (uint256 j = 0; j < jlength; j++) {
                if (storageDexes[j] == _dexs[i]) {
                    _removeDex(j);
                    jlength = storageDexes.length;
                    break;
                }
            }
        }
    }

    /// @notice Adds/removes a specific function signature to/from the allowlist
    /// @param _signature the function signature to allow/disallow
    /// @param _approval whether the function signature should be allowed
    function setFunctionApprovalBySignature(bytes32 _signature, bool _approval) external {
        LibDiamond.enforceIsContractOwner();
        appStorage.dexFuncSignatureAllowList[_signature] = _approval;
        emit FunctionSignatureApprovalChanged(_signature, _approval);
    }

    /// @notice Batch Adds/removes a specific function signature to/from the allowlist
    /// @param _signatures the function signatures to allow/disallow
    /// @param _approval whether the function signatures should be allowed
    function batchSetFunctionApprovalBySignature(bytes32[] calldata _signatures, bool _approval) external {
        LibDiamond.enforceIsContractOwner();
        mapping(bytes32 => bool) storage dexFuncSignatureAllowList = appStorage.dexFuncSignatureAllowList;
        uint256 length = _signatures.length;
        for (uint256 i = 0; i < length; i++) {
            bytes32 _signature = _signatures[i];
            dexFuncSignatureAllowList[_signature] = _approval;
            emit FunctionSignatureApprovalChanged(_signature, _approval);
        }
    }

    /// @notice Returns whether a function signature is approved
    /// @param _signature the function signature to query
    /// @return approved Approved or not
    function isFunctionApproved(bytes32 _signature) public view returns (bool approved) {
        return appStorage.dexFuncSignatureAllowList[_signature];
    }

    /// @notice Returns a list of all approved DEX addresses.
    /// @return addresses List of approved DEX addresses
    function approvedDexs() external view returns (address[] memory addresses) {
        return appStorage.dexs;
    }

    /// Private Methods ///

    /// @dev Contains business logic for removing a DEX address.
    /// @param index index of the dex to remove
    function _removeDex(uint256 index) private {
        address[] storage storageDexes = appStorage.dexs;
        address toRemove = storageDexes[index];
        // Move the last element into the place to delete
        storageDexes[index] = storageDexes[storageDexes.length - 1];
        // Remove the last element
        storageDexes.pop();
        emit DexRemoved(toRemove);
    }

    /// @dev Contains business logic for validating a DEX address.
    /// @param _dex address of the dex to check
    function _checkAddress(address _dex) private pure {
        if (_dex == 0x0000000000000000000000000000000000000000) {
            revert InvalidConfig();
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

struct LibStorage {
    mapping(address => bool) dexAllowlist;
    mapping(bytes32 => bool) dexFuncSignatureAllowList;
    address[] dexs;
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

import { IDiamondCut } from "../Interfaces/IDiamondCut.sol";

library LibDiamond {
    bytes32 internal constant DIAMOND_STORAGE_POSITION = keccak256("diamond.standard.diamond.storage");

    struct FacetAddressAndPosition {
        address facetAddress;
        uint96 functionSelectorPosition; // position in facetFunctionSelectors.functionSelectors array
    }

    struct FacetFunctionSelectors {
        bytes4[] functionSelectors;
        uint256 facetAddressPosition; // position of facetAddress in facetAddresses array
    }

    struct DiamondStorage {
        // maps function selector to the facet address and
        // the position of the selector in the facetFunctionSelectors.selectors array
        mapping(bytes4 => FacetAddressAndPosition) selectorToFacetAndPosition;
        // maps facet addresses to function selectors
        mapping(address => FacetFunctionSelectors) facetFunctionSelectors;
        // facet addresses
        address[] facetAddresses;
        // Used to query if a contract implements an interface.
        // Used to implement ERC-165.
        mapping(bytes4 => bool) supportedInterfaces;
        // owner of the contract
        address contractOwner;
    }

    function diamondStorage() internal pure returns (DiamondStorage storage ds) {
        bytes32 position = DIAMOND_STORAGE_POSITION;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            ds.slot := position
        }
    }

    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    function setContractOwner(address _newOwner) internal {
        DiamondStorage storage ds = diamondStorage();
        address previousOwner = ds.contractOwner;
        ds.contractOwner = _newOwner;
        emit OwnershipTransferred(previousOwner, _newOwner);
    }

    function contractOwner() internal view returns (address contractOwner_) {
        contractOwner_ = diamondStorage().contractOwner;
    }

    function enforceIsContractOwner() internal view {
        require(msg.sender == diamondStorage().contractOwner, "LibDiamond: Must be contract owner");
    }

    event DiamondCut(IDiamondCut.FacetCut[] _diamondCut, address _init, bytes _calldata);

    // Internal function version of diamondCut
    function diamondCut(
        IDiamondCut.FacetCut[] memory _diamondCut,
        address _init,
        bytes memory _calldata
    ) internal {
        for (uint256 facetIndex; facetIndex < _diamondCut.length; facetIndex++) {
            IDiamondCut.FacetCutAction action = _diamondCut[facetIndex].action;
            if (action == IDiamondCut.FacetCutAction.Add) {
                addFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else if (action == IDiamondCut.FacetCutAction.Replace) {
                replaceFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else if (action == IDiamondCut.FacetCutAction.Remove) {
                removeFunctions(_diamondCut[facetIndex].facetAddress, _diamondCut[facetIndex].functionSelectors);
            } else {
                revert("LibDiamondCut: Incorrect FacetCutAction");
            }
        }
        emit DiamondCut(_diamondCut, _init, _calldata);
        initializeDiamondCut(_init, _calldata);
    }

    function addFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)");
        uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
        // add new facet address if it does not exist
        if (selectorPosition == 0) {
            addFacet(ds, _facetAddress);
        }
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            require(oldFacetAddress == address(0), "LibDiamondCut: Can't add function that already exists");
            addFunction(ds, selector, selectorPosition, _facetAddress);
            selectorPosition++;
        }
    }

    function replaceFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        require(_facetAddress != address(0), "LibDiamondCut: Add facet can't be address(0)");
        uint96 selectorPosition = uint96(ds.facetFunctionSelectors[_facetAddress].functionSelectors.length);
        // add new facet address if it does not exist
        if (selectorPosition == 0) {
            addFacet(ds, _facetAddress);
        }
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            require(oldFacetAddress != _facetAddress, "LibDiamondCut: Can't replace function with same function");
            removeFunction(ds, oldFacetAddress, selector);
            addFunction(ds, selector, selectorPosition, _facetAddress);
            selectorPosition++;
        }
    }

    function removeFunctions(address _facetAddress, bytes4[] memory _functionSelectors) internal {
        require(_functionSelectors.length > 0, "LibDiamondCut: No selectors in facet to cut");
        DiamondStorage storage ds = diamondStorage();
        // if function does not exist then do nothing and return
        require(_facetAddress == address(0), "LibDiamondCut: Remove facet address must be address(0)");
        for (uint256 selectorIndex; selectorIndex < _functionSelectors.length; selectorIndex++) {
            bytes4 selector = _functionSelectors[selectorIndex];
            address oldFacetAddress = ds.selectorToFacetAndPosition[selector].facetAddress;
            removeFunction(ds, oldFacetAddress, selector);
        }
    }

    function addFacet(DiamondStorage storage ds, address _facetAddress) internal {
        enforceHasContractCode(_facetAddress, "LibDiamondCut: New facet has no code");
        ds.facetFunctionSelectors[_facetAddress].facetAddressPosition = ds.facetAddresses.length;
        ds.facetAddresses.push(_facetAddress);
    }

    function addFunction(
        DiamondStorage storage ds,
        bytes4 _selector,
        uint96 _selectorPosition,
        address _facetAddress
    ) internal {
        ds.selectorToFacetAndPosition[_selector].functionSelectorPosition = _selectorPosition;
        ds.facetFunctionSelectors[_facetAddress].functionSelectors.push(_selector);
        ds.selectorToFacetAndPosition[_selector].facetAddress = _facetAddress;
    }

    function removeFunction(
        DiamondStorage storage ds,
        address _facetAddress,
        bytes4 _selector
    ) internal {
        require(_facetAddress != address(0), "LibDiamondCut: Can't remove function that doesn't exist");
        // an immutable function is a function defined directly in a diamond
        require(_facetAddress != address(this), "LibDiamondCut: Can't remove immutable function");
        // replace selector with last selector, then delete last selector
        uint256 selectorPosition = ds.selectorToFacetAndPosition[_selector].functionSelectorPosition;
        uint256 lastSelectorPosition = ds.facetFunctionSelectors[_facetAddress].functionSelectors.length - 1;
        // if not the same then replace _selector with lastSelector
        if (selectorPosition != lastSelectorPosition) {
            bytes4 lastSelector = ds.facetFunctionSelectors[_facetAddress].functionSelectors[lastSelectorPosition];
            ds.facetFunctionSelectors[_facetAddress].functionSelectors[selectorPosition] = lastSelector;
            ds.selectorToFacetAndPosition[lastSelector].functionSelectorPosition = uint96(selectorPosition);
        }
        // delete the last selector
        ds.facetFunctionSelectors[_facetAddress].functionSelectors.pop();
        delete ds.selectorToFacetAndPosition[_selector];

        // if no more selectors for facet address then delete the facet address
        if (lastSelectorPosition == 0) {
            // replace facet address with last facet address and delete last facet address
            uint256 lastFacetAddressPosition = ds.facetAddresses.length - 1;
            uint256 facetAddressPosition = ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
            if (facetAddressPosition != lastFacetAddressPosition) {
                address lastFacetAddress = ds.facetAddresses[lastFacetAddressPosition];
                ds.facetAddresses[facetAddressPosition] = lastFacetAddress;
                ds.facetFunctionSelectors[lastFacetAddress].facetAddressPosition = facetAddressPosition;
            }
            ds.facetAddresses.pop();
            delete ds.facetFunctionSelectors[_facetAddress].facetAddressPosition;
        }
    }

    function initializeDiamondCut(address _init, bytes memory _calldata) internal {
        if (_init == address(0)) {
            require(_calldata.length == 0, "LibDiamondCut: _init is address(0) but_calldata is not empty");
        } else {
            require(_calldata.length > 0, "LibDiamondCut: _calldata is empty but _init is not address(0)");
            if (_init != address(this)) {
                enforceHasContractCode(_init, "LibDiamondCut: _init address has no code");
            }
            // solhint-disable-next-line avoid-low-level-calls
            (bool success, bytes memory error) = _init.delegatecall(_calldata);
            if (!success) {
                if (error.length > 0) {
                    // bubble up the error
                    revert(string(error));
                } else {
                    revert("LibDiamondCut: _init function reverted");
                }
            }
        }
    }

    function enforceHasContractCode(address _contract, string memory _errorMessage) internal view {
        uint256 contractSize;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            contractSize := extcodesize(_contract)
        }
        require(contractSize > 0, _errorMessage);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

error InvalidAmount();
error TokenAddressIsZero();
error CannotBridgeToSameNetwork();
error ZeroPostSwapBalance();
error InvalidBridgeConfigLength();
error NoSwapDataProvided();
error NativeValueWithERC();
error ContractCallNotAllowed();
error NullAddrIsNotAValidSpender();
error NullAddrIsNotAnERC20Token();
error NoTransferToNullAddress();
error NativeAssetTransferFailed();
error InvalidContract();
error InvalidConfig();

// SPDX-License-Identifier: MIT
pragma solidity 0.8.13;

interface IDiamondCut {
    enum FacetCutAction {
        Add,
        Replace,
        Remove
    }
    // Add=0, Replace=1, Remove=2

    struct FacetCut {
        address facetAddress;
        FacetCutAction action;
        bytes4[] functionSelectors;
    }

    /// @notice Add/replace/remove any number of functions and optionally execute
    ///         a function with delegatecall
    /// @param _diamondCut Contains the facet addresses and function selectors
    /// @param _init The address of the contract or facet to execute _calldata
    /// @param _calldata A function call, including function selector and arguments
    ///                  _calldata is executed with delegatecall on _init
    function diamondCut(
        FacetCut[] calldata _diamondCut,
        address _init,
        bytes calldata _calldata
    ) external;

    event DiamondCut(FacetCut[] _diamondCut, address _init, bytes _calldata);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 10000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "metadata": {
    "useLiteralContent": true
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[],"name":"InvalidConfig","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"dexAddress","type":"address"}],"name":"DexAdded","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"dexAddress","type":"address"}],"name":"DexRemoved","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"functionSignature","type":"bytes32"},{"indexed":true,"internalType":"bool","name":"approved","type":"bool"}],"name":"FunctionSignatureApprovalChanged","type":"event"},{"inputs":[{"internalType":"address","name":"_dex","type":"address"}],"name":"addDex","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"approvedDexs","outputs":[{"internalType":"address[]","name":"addresses","type":"address[]"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address[]","name":"_dexs","type":"address[]"}],"name":"batchAddDex","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address[]","name":"_dexs","type":"address[]"}],"name":"batchRemoveDex","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32[]","name":"_signatures","type":"bytes32[]"},{"internalType":"bool","name":"_approval","type":"bool"}],"name":"batchSetFunctionApprovalBySignature","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_signature","type":"bytes32"}],"name":"isFunctionApproved","outputs":[{"internalType":"bool","name":"approved","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_dex","type":"address"}],"name":"removeDex","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes32","name":"_signature","type":"bytes32"},{"internalType":"bool","name":"_approval","type":"bool"}],"name":"setFunctionApprovalBySignature","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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