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0x7C817806BF41946f1006AB72f2c8550948E9c0EC
 

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Contract Source Code Verified (Exact Match)

Contract Name:
LiFiProxyFacet

Compiler Version
v0.8.23+commit.f704f362

Optimization Enabled:
Yes with 200 runs

Other Settings:
shanghai EvmVersion
File 1 of 10 : LiFiProxyFacet.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {AggregatorProxy} from "src/Helpers/AggregatorProxy.sol";

contract LiFiProxyFacet is AggregatorProxy {
    constructor(address _liFi) AggregatorProxy(_liFi) {}

    function callLiFi(uint256 fromTokenWithFee, uint256 fromAmt, uint256 toTokenWithFee, bytes calldata callData)
        external
        payable
    {
        _callAggregator(fromTokenWithFee, fromAmt, toTokenWithFee, callData);
    }
}

File 2 of 10 : AggregatorProxy.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {SafeERC20} from "@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol";
import {IERC20} from "@openzeppelin/contracts/token/ERC20/IERC20.sol";

import {ReentrancyGuard} from "src/Helpers/ReentrancyGuard.sol";
import {RouterErrors} from "src/Errors/RouterErrors.sol";
import {LibFeeCollector} from "src/Libraries/LibFeeCollector.sol";

contract AggregatorProxy is ReentrancyGuard {
    using SafeERC20 for IERC20;

    event FeeCollected(address token, address recipient, uint256 amount);

    uint256 private constant FEE_PERCENTAGE_BASE = 10000;
    address private immutable aggregator;

    constructor(address _aggregator) {
        require(_aggregator != address(0) && _aggregator.code.length > 100, "AggregatorProxy: invalid aggregator");
        aggregator = _aggregator;
    }

    function _parseAddressAndFee(uint256 tokenWithFee) internal pure returns (address token, uint16 fee) {
        token = address(uint160(tokenWithFee));
        fee = uint16(tokenWithFee >> 160);
        require(fee < FEE_PERCENTAGE_BASE, "AggregatorProxy: invalid fee");
    }

    function _callAggregator(
        uint256 fromTokenWithFee,
        uint256 fromAmount,
        uint256 toTokenWithFee,
        bytes calldata callData
    ) internal nonReentrant {
        uint256 ethBalanceBefore = address(this).balance - msg.value;
        (address fromToken, uint16 fromFee) = _parseAddressAndFee(fromTokenWithFee);
        uint256 fromTokenBalanceBefore;
        uint256 msgValue = msg.value;
        address feeRecipient = LibFeeCollector.getRecipient();
        if (fromToken == address(0)) {
            if (fromFee > 0) {
                // Use feeAmount because cross-chain transactions charge an additional native token as bridge fee.
                uint256 feeAmt = (fromAmount * fromFee) / FEE_PERCENTAGE_BASE;
                msgValue -= feeAmt;
                _callAndBubblingRevert(feeRecipient, "", feeAmt);
                emit FeeCollected(fromToken, feeRecipient, feeAmt);
            }
        } else {
            fromTokenBalanceBefore = IERC20(fromToken).balanceOf(address(this));
            if (fromFee > 0) {
                uint256 feeAmt = (fromAmount * fromFee) / FEE_PERCENTAGE_BASE;
                fromAmount -= feeAmt;
                IERC20(fromToken).safeTransferFrom(msg.sender, feeRecipient, feeAmt);
                emit FeeCollected(fromToken, feeRecipient, feeAmt);
            }
            IERC20(fromToken).safeTransferFrom(msg.sender, address(this), fromAmount);
            if (!_makeCall(IERC20(fromToken), IERC20.approve.selector, aggregator, fromAmount)) {
                revert RouterErrors.ApproveFailed();
            }
        }

        (address toToken, uint16 toFee) = _parseAddressAndFee(toTokenWithFee);
        uint256 toTokenBalanceBefore;
        if (toFee > 0 && toToken != address(0)) {
            toTokenBalanceBefore = IERC20(toToken).balanceOf(address(this));
        }

        _callAndBubblingRevert(aggregator, callData, msgValue);

        if (fromToken != address(0)) {
            uint256 balanceDiff = IERC20(fromToken).balanceOf(address(this)) - fromTokenBalanceBefore;
            if (balanceDiff > 0) {
                IERC20(fromToken).safeTransfer(msg.sender, balanceDiff);
            }
            if (!_makeCall(IERC20(fromToken), IERC20.approve.selector, aggregator, 0)) {
                revert RouterErrors.ApproveFailed();
            }
        }

        if (toToken == address(0)) {
            uint256 balanceDiff = address(this).balance - ethBalanceBefore;
            if (balanceDiff > 0) {
                uint256 feeAmt = (balanceDiff * toFee) / FEE_PERCENTAGE_BASE;
                _callAndBubblingRevert(msg.sender, "", balanceDiff - feeAmt);
                if (feeAmt > 0) {
                    _callAndBubblingRevert(feeRecipient, "", feeAmt);
                }
                emit FeeCollected(toToken, feeRecipient, feeAmt);
            }
        } else {
            uint256 balanceDiff = IERC20(toToken).balanceOf(address(this)) - toTokenBalanceBefore;
            if (balanceDiff > 0) {
                uint256 feeAmt = (balanceDiff * toFee) / FEE_PERCENTAGE_BASE;
                IERC20(toToken).safeTransfer(msg.sender, balanceDiff - feeAmt);
                if (feeAmt > 0) {
                    IERC20(toToken).safeTransfer(feeRecipient, feeAmt);
                }
                emit FeeCollected(toToken, feeRecipient, feeAmt);
            }
        }
    }

    function _callAndBubblingRevert(address to, bytes memory callData, uint256 value) private {
        (bool success, bytes memory result) = to.call{value: value}(callData);
        if (!success) {
            assembly {
                revert(add(result, 32), mload(result))
            }
        }
    }

    function _makeCall(IERC20 token, bytes4 selector, address to, uint256 amount) private returns (bool success) {
        assembly ("memory-safe") {
            // solhint-disable-line no-inline-assembly
            let data := mload(0x40)

            mstore(data, selector)
            mstore(add(data, 0x04), to)
            mstore(add(data, 0x24), amount)
            success := call(gas(), token, 0, data, 0x44, 0x0, 0x20)
            if success {
                switch returndatasize()
                case 0 { success := gt(extcodesize(token), 0) }
                default { success := and(gt(returndatasize(), 31), eq(mload(0), 1)) }
            }
        }
    }
}

File 3 of 10 : SafeERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/utils/SafeERC20.sol)

pragma solidity ^0.8.20;

import {IERC20} from "../IERC20.sol";
import {IERC20Permit} from "../extensions/IERC20Permit.sol";
import {Address} from "../../../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 An operation with an ERC20 token failed.
     */
    error SafeERC20FailedOperation(address token);

    /**
     * @dev Indicates a failed `decreaseAllowance` request.
     */
    error SafeERC20FailedDecreaseAllowance(address spender, uint256 currentAllowance, uint256 requestedDecrease);

    /**
     * @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.encodeCall(token.transfer, (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.encodeCall(token.transferFrom, (from, to, 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);
        forceApprove(token, spender, oldAllowance + value);
    }

    /**
     * @dev Decrease the calling contract's allowance toward `spender` by `requestedDecrease`. If `token` returns no
     * value, non-reverting calls are assumed to be successful.
     */
    function safeDecreaseAllowance(IERC20 token, address spender, uint256 requestedDecrease) internal {
        unchecked {
            uint256 currentAllowance = token.allowance(address(this), spender);
            if (currentAllowance < requestedDecrease) {
                revert SafeERC20FailedDecreaseAllowance(spender, currentAllowance, requestedDecrease);
            }
            forceApprove(token, spender, currentAllowance - requestedDecrease);
        }
    }

    /**
     * @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.encodeCall(token.approve, (spender, value));

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

    /**
     * @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);
        if (returndata.length != 0 && !abi.decode(returndata, (bool))) {
            revert SafeERC20FailedOperation(address(token));
        }
    }

    /**
     * @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(token).code.length > 0;
    }
}

File 4 of 10 : IERC20.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/IERC20.sol)

pragma solidity ^0.8.20;

/**
 * @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 value of tokens in existence.
     */
    function totalSupply() external view returns (uint256);

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

    /**
     * @dev Moves a `value` amount of 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 value) 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 a `value` amount of tokens 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 value) external returns (bool);

    /**
     * @dev Moves a `value` amount of tokens from `from` to `to` using the
     * allowance mechanism. `value` 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 value) external returns (bool);
}

File 5 of 10 : ReentrancyGuard.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

import {LibReentrancyGuard} from "../Libraries/LibReentrancyGuard.sol";

abstract contract ReentrancyGuard {
    uint256 private constant _NOT_ENTERED = 0;
    uint256 private constant _ENTERED = 1;

    modifier nonReentrant() {
        LibReentrancyGuard.ReentrancyStorage storage s = LibReentrancyGuard.reentrancyStorage();
        if (s.status == _ENTERED) revert LibReentrancyGuard.ReentrancyError();
        s.status = _ENTERED;
        _;
        s.status = _NOT_ENTERED;
    }
}

File 6 of 10 : RouterErrors.sol
// SPDX-License-Identifier: MIT

pragma solidity 0.8.23;

library RouterErrors {
    error ReturnAmountIsNotEnough(uint256 result, uint256 minReturn);
    error InvalidMsgValue();
    error ERC20TransferFailed();
    error Permit2TransferFromFailed();
    error ApproveFailed();
    error TaxTokenDetected();
    error NativeAssetTransferFailed();
}

File 7 of 10 : LibFeeCollector.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

library LibFeeCollector {
    bytes32 internal constant NAMESPACE = keccak256("com.binance.w3w.diamond.feecollector");

    event FeeCollected(address indexed token, address recipient, uint256 amount);

    struct Storage {
        address recipient;
    }

    function getRecipient() internal view returns (address) {
        return feeCollectorStorage().recipient;
    }

    function setRecipient(address _recipient) internal {
        require(_recipient != address(0) && _recipient != address(this), "FeeCollectFacet: INVALID_FEE_RECIPIENT");
        require(_recipient != getRecipient(), "FeeCollectFacet: FEE_RECIPIENT_SAME_AS_CURRENT");
        feeCollectorStorage().recipient = _recipient;
    }

    function feeCollectorStorage() internal pure returns (Storage storage s) {
        bytes32 namespace = NAMESPACE;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            s.slot := namespace
        }
    }
}

File 8 of 10 : IERC20Permit.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (token/ERC20/extensions/IERC20Permit.sol)

pragma solidity ^0.8.20;

/**
 * @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.
 *
 * ==== Security Considerations
 *
 * There are two important considerations concerning the use of `permit`. The first is that a valid permit signature
 * expresses an allowance, and it should not be assumed to convey additional meaning. In particular, it should not be
 * considered as an intention to spend the allowance in any specific way. The second is that because permits have
 * built-in replay protection and can be submitted by anyone, they can be frontrun. A protocol that uses permits should
 * take this into consideration and allow a `permit` call to fail. Combining these two aspects, a pattern that may be
 * generally recommended is:
 *
 * ```solidity
 * function doThingWithPermit(..., uint256 value, uint256 deadline, uint8 v, bytes32 r, bytes32 s) public {
 *     try token.permit(msg.sender, address(this), value, deadline, v, r, s) {} catch {}
 *     doThing(..., value);
 * }
 *
 * function doThing(..., uint256 value) public {
 *     token.safeTransferFrom(msg.sender, address(this), value);
 *     ...
 * }
 * ```
 *
 * Observe that: 1) `msg.sender` is used as the owner, leaving no ambiguity as to the signer intent, and 2) the use of
 * `try/catch` allows the permit to fail and makes the code tolerant to frontrunning. (See also
 * {SafeERC20-safeTransferFrom}).
 *
 * Additionally, note that smart contract wallets (such as Argent or Safe) are not able to produce permit signatures, so
 * contracts should have entry points that don't rely on permit.
 */
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].
     *
     * CAUTION: See Security Considerations above.
     */
    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 9 of 10 : Address.sol
// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v5.0.0) (utils/Address.sol)

pragma solidity ^0.8.20;

/**
 * @dev Collection of functions related to the address type
 */
library Address {
    /**
     * @dev The ETH balance of the account is not enough to perform the operation.
     */
    error AddressInsufficientBalance(address account);

    /**
     * @dev There's no code at `target` (it is not a contract).
     */
    error AddressEmptyCode(address target);

    /**
     * @dev A call to an address target failed. The target may have reverted.
     */
    error FailedInnerCall();

    /**
     * @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/v0.8.20/security-considerations.html#use-the-checks-effects-interactions-pattern[checks-effects-interactions pattern].
     */
    function sendValue(address payable recipient, uint256 amount) internal {
        if (address(this).balance < amount) {
            revert AddressInsufficientBalance(address(this));
        }

        (bool success, ) = recipient.call{value: amount}("");
        if (!success) {
            revert FailedInnerCall();
        }
    }

    /**
     * @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 or custom error, it is bubbled
     * up by this function (like regular Solidity function calls). However, if
     * the call reverted with no returned reason, this function reverts with a
     * {FailedInnerCall} error.
     *
     * 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.
     */
    function functionCall(address target, bytes memory data) internal returns (bytes memory) {
        return functionCallWithValue(target, data, 0);
    }

    /**
     * @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`.
     */
    function functionCallWithValue(address target, bytes memory data, uint256 value) internal returns (bytes memory) {
        if (address(this).balance < value) {
            revert AddressInsufficientBalance(address(this));
        }
        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResultFromTarget(target, success, returndata);
    }

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

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

    /**
     * @dev Tool to verify that a low level call to smart-contract was successful, and reverts if the target
     * was not a contract or bubbling up the revert reason (falling back to {FailedInnerCall}) in case of an
     * unsuccessful call.
     */
    function verifyCallResultFromTarget(
        address target,
        bool success,
        bytes memory returndata
    ) internal view returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            // only check if target is a contract if the call was successful and the return data is empty
            // otherwise we already know that it was a contract
            if (returndata.length == 0 && target.code.length == 0) {
                revert AddressEmptyCode(target);
            }
            return returndata;
        }
    }

    /**
     * @dev Tool to verify that a low level call was successful, and reverts if it wasn't, either by bubbling the
     * revert reason or with a default {FailedInnerCall} error.
     */
    function verifyCallResult(bool success, bytes memory returndata) internal pure returns (bytes memory) {
        if (!success) {
            _revert(returndata);
        } else {
            return returndata;
        }
    }

    /**
     * @dev Reverts with returndata if present. Otherwise reverts with {FailedInnerCall}.
     */
    function _revert(bytes memory returndata) 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 FailedInnerCall();
        }
    }
}

File 10 of 10 : LibReentrancyGuard.sol
// SPDX-License-Identifier: MIT
pragma solidity 0.8.23;

library LibReentrancyGuard {
    bytes32 private constant NAMESPACE = keccak256("com.binance.w3w.diamond.reentrancyguard");

    struct ReentrancyStorage {
        uint256 status;
    }

    error ReentrancyError();

    /// @dev fetch local storage
    function reentrancyStorage() internal pure returns (ReentrancyStorage storage data) {
        bytes32 position = NAMESPACE;
        // solhint-disable-next-line no-inline-assembly
        assembly {
            data.slot := position
        }
    }
}

Settings
{
  "remappings": [
    "forge-std/=lib/forge-std/src/",
    "@1inch/solidity-utils/contracts/=lib/solidity-utils/contracts/",
    "@openzeppelin/contracts/=lib/openzeppelin-contracts/contracts/",
    "@1inch/limit-order-protocol-contract/contracts/=lib/limit-order-protocol/contracts/",
    "ds-test/=lib/openzeppelin-contracts/lib/forge-std/lib/ds-test/src/",
    "erc4626-tests/=lib/openzeppelin-contracts/lib/erc4626-tests/",
    "limit-order-protocol/=lib/limit-order-protocol/contracts/",
    "openzeppelin-contracts/=lib/openzeppelin-contracts/",
    "solidity-utils/=lib/solidity-utils/contracts/"
  ],
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "metadata": {
    "useLiteralContent": false,
    "bytecodeHash": "ipfs",
    "appendCBOR": true
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "evmVersion": "shanghai",
  "viaIR": true,
  "libraries": {}
}

Contract Security Audit

Contract ABI

[{"inputs":[{"internalType":"address","name":"_liFi","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[{"internalType":"address","name":"target","type":"address"}],"name":"AddressEmptyCode","type":"error"},{"inputs":[{"internalType":"address","name":"account","type":"address"}],"name":"AddressInsufficientBalance","type":"error"},{"inputs":[],"name":"ApproveFailed","type":"error"},{"inputs":[],"name":"FailedInnerCall","type":"error"},{"inputs":[],"name":"ReentrancyError","type":"error"},{"inputs":[{"internalType":"address","name":"token","type":"address"}],"name":"SafeERC20FailedOperation","type":"error"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"FeeCollected","type":"event"},{"inputs":[{"internalType":"uint256","name":"fromTokenWithFee","type":"uint256"},{"internalType":"uint256","name":"fromAmt","type":"uint256"},{"internalType":"uint256","name":"toTokenWithFee","type":"uint256"},{"internalType":"bytes","name":"callData","type":"bytes"}],"name":"callLiFi","outputs":[],"stateMutability":"payable","type":"function"}]

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Deployed Bytecode

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Constructor Arguments (ABI-Encoded and is the last bytes of the Contract Creation Code above)

0000000000000000000000001231deb6f5749ef6ce6943a275a1d3e7486f4eae

-----Decoded View---------------
Arg [0] : _liFi (address): 0x1231DEB6f5749EF6cE6943a275A1D3E7486F4EaE

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000001231deb6f5749ef6ce6943a275a1d3e7486f4eae


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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.