Contract 0x349AEB7b7aCCB2e2C9E586B090b615CB19A6de2C 16

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

import { LibDiamond } from "../Libraries/LibDiamond.sol";
import { IERC173 } from "../Interfaces/IERC173.sol";

/// @title Ownership Facet
/// @author LI.FI (https://li.fi)
/// @notice Manages ownership of the LiFi Diamond contract for admin purposes
contract OwnershipFacet is IERC173 {
    /// Storage ///

    bytes32 internal constant NAMESPACE = hex"cf2fba1a5c9c61959b11f2f1f88658271468c6fcc649cb2a6868473d3cd07f8b"; //keccak256("com.lifi.facets.ownership");
    struct Storage {
        address newOwner;
    }

    /// Errors ///

    error NoNullOwner();
    error NewOwnerMustNotBeSelf();
    error NoPendingOwnershipTransfer();
    error NotPendingOwner();

    /// Events ///

    event OwnershipTransferRequested(address indexed _from, address indexed _to);

    /// External Methods ///

    /// @notice Intitiates transfer of ownership to a new address
    /// @param _newOwner the address to transfer ownership to
    function transferOwnership(address _newOwner) external override {
        LibDiamond.enforceIsContractOwner();
        Storage storage s = getStorage();

        if (_newOwner == address(0)) revert NoNullOwner();

        if (_newOwner == LibDiamond.contractOwner()) revert NewOwnerMustNotBeSelf();

        s.newOwner = _newOwner;
        emit OwnershipTransferRequested(msg.sender, s.newOwner);
    }

    /// @notice Cancel transfer of ownership
    function cancelOnwershipTransfer() external {
        LibDiamond.enforceIsContractOwner();
        Storage storage s = getStorage();

        if (s.newOwner == address(0)) revert NoPendingOwnershipTransfer();
        s.newOwner = address(0);
    }

    /// @notice Confirms transfer of ownership to the calling address (msg.sender)
    function confirmOwnershipTransfer() external {
        Storage storage s = getStorage();
        if (msg.sender != s.newOwner) revert NotPendingOwner();
        LibDiamond.setContractOwner(s.newOwner);
        s.newOwner = address(0);
        emit OwnershipTransferred(LibDiamond.contractOwner(), s.newOwner);
    }

    /// @notice Return the current owner address
    /// @return owner_ The current owner address
    function owner() external view override returns (address owner_) {
        owner_ = LibDiamond.contractOwner();
    }

    /// @dev fetch local storage
    function getStorage() private pure returns (Storage storage s) {
        bytes32 namespace = NAMESPACE;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            s.slot := namespace
        }
    }
}

// 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;

/// @title ERC-173 Contract Ownership Standard
///  Note: the ERC-165 identifier for this interface is 0x7f5828d0
/* is ERC165 */
interface IERC173 {
    /// @dev This emits when ownership of a contract changes.
    event OwnershipTransferred(address indexed previousOwner, address indexed newOwner);

    /// @notice Get the address of the owner
    /// @return owner_ The address of the owner.
    function owner() external view returns (address owner_);

    /// @notice Set the address of the new owner of the contract
    /// @dev Set _newOwner to address(0) to renounce any ownership.
    /// @param _newOwner The address of the new owner of the contract
    function transferOwnership(address _newOwner) external;
}

// 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":"NewOwnerMustNotBeSelf","type":"error"},{"inputs":[],"name":"NoNullOwner","type":"error"},{"inputs":[],"name":"NoPendingOwnershipTransfer","type":"error"},{"inputs":[],"name":"NotPendingOwner","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_from","type":"address"},{"indexed":true,"internalType":"address","name":"_to","type":"address"}],"name":"OwnershipTransferRequested","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"previousOwner","type":"address"},{"indexed":true,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnershipTransferred","type":"event"},{"inputs":[],"name":"cancelOnwershipTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"confirmOwnershipTransfer","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"owner_","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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