FRAX Price: $0.79 (-2.79%)

Contract

0x21834a083484D6bAbF9Da1179f8a87eC9E03811A

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0 FRAX | 88,420,625 FXTL

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$0.00

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Similar Match Source Code
This contract matches the deployed Bytecode of the Source Code for Contract 0xadAE1B72...AbF7A8117
The constructor portion of the code might be different and could alter the actual behaviour of the contract

Contract Name:
L1QuitCreditorReceiverConverter

Compiler Version
v0.8.26+commit.8a97fa7a

Optimization Enabled:
Yes with 100000 runs

Other Settings:
cancun EvmVersion, MIT license

Contract Source Code (Solidity)

/**
 *Submitted for verification at fraxscan.com on 2024-07-30
*/

// SPDX-License-Identifier: GPL-2.0-or-later
pragma solidity >=0.8.0;


// node_modules/@openzeppelin/contracts/security/ReentrancyGuard.sol

// OpenZeppelin Contracts v4.4.1 (security/ReentrancyGuard.sol)

/**
 * @dev Contract module that helps prevent reentrant calls to a function.
 *
 * Inheriting from `ReentrancyGuard` will make the {nonReentrant} modifier
 * available, which can be applied to functions to make sure there are no nested
 * (reentrant) calls to them.
 *
 * Note that because there is a single `nonReentrant` guard, functions marked as
 * `nonReentrant` may not call one another. This can be worked around by making
 * those functions `private`, and then adding `external` `nonReentrant` entry
 * points to them.
 *
 * TIP: If you would like to learn more about reentrancy and alternative ways
 * to protect against it, check out our blog post
 * https://blog.openzeppelin.com/reentrancy-after-istanbul/[Reentrancy After Istanbul].
 */
abstract contract ReentrancyGuard {
    // Booleans are more expensive than uint256 or any type that takes up a full
    // word because each write operation emits an extra SLOAD to first read the
    // slot's contents, replace the bits taken up by the boolean, and then write
    // back. This is the compiler's defense against contract upgrades and
    // pointer aliasing, and it cannot be disabled.

    // The values being non-zero value makes deployment a bit more expensive,
    // but in exchange the refund on every call to nonReentrant will be lower in
    // amount. Since refunds are capped to a percentage of the total
    // transaction's gas, it is best to keep them low in cases like this one, to
    // increase the likelihood of the full refund coming into effect.
    uint256 private constant _NOT_ENTERED = 1;
    uint256 private constant _ENTERED = 2;

    uint256 private _status;

    constructor() {
        _status = _NOT_ENTERED;
    }

    /**
     * @dev Prevents a contract from calling itself, directly or indirectly.
     * Calling a `nonReentrant` function from another `nonReentrant`
     * function is not supported. It is possible to prevent this from happening
     * by making the `nonReentrant` function external, and making it call a
     * `private` function that does the actual work.
     */
    modifier nonReentrant() {
        // On the first call to nonReentrant, _notEntered will be true
        require(_status != _ENTERED, "ReentrancyGuard: reentrant call");

        // Any calls to nonReentrant after this point will fail
        _status = _ENTERED;

        _;

        // By storing the original value once again, a refund is triggered (see
        // https://eips.ethereum.org/EIPS/eip-2200)
        _status = _NOT_ENTERED;
    }
}

// node_modules/@openzeppelin/contracts/token/ERC20/IERC20.sol

// OpenZeppelin Contracts (last updated v4.6.0) (token/ERC20/IERC20.sol)

/**
 * @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);
}

// node_modules/@openzeppelin/contracts/token/ERC20/extensions/draft-IERC20Permit.sol

// OpenZeppelin Contracts v4.4.1 (token/ERC20/extensions/draft-IERC20Permit.sol)

/**
 * @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);
}

// node_modules/@openzeppelin/contracts/utils/Address.sol

// OpenZeppelin Contracts (last updated v4.7.0) (utils/Address.sol)

/**
 * @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
     * ====
     *
     * [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://diligence.consensys.net/posts/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/v0.5.11/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 functionCall(target, data, "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");
        require(isContract(target), "Address: call to non-contract");

        (bool success, bytes memory returndata) = target.call{value: value}(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: static call to non-contract");

        (bool success, bytes memory returndata) = target.staticcall(data);
        return verifyCallResult(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) {
        require(isContract(target), "Address: delegate call to non-contract");

        (bool success, bytes memory returndata) = target.delegatecall(data);
        return verifyCallResult(success, returndata, errorMessage);
    }

    /**
     * @dev Tool to verifies that a low level call was successful, and revert if it wasn't, either by bubbling the
     * revert reason 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 {
            // 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);
            }
        }
    }
}

// src/contracts/Miscellany/FraxFarmQuitCreditor/ICrossDomainMessenger.sol

interface ICrossDomainMessenger {
    function MESSAGE_VERSION() external view returns (uint16);

    function MIN_GAS_CALLDATA_OVERHEAD() external view returns (uint64);

    function MIN_GAS_DYNAMIC_OVERHEAD_DENOMINATOR() external view returns (uint64);

    function MIN_GAS_DYNAMIC_OVERHEAD_NUMERATOR() external view returns (uint64);

    function OTHER_MESSENGER() external view returns (address);

    function RELAY_CALL_OVERHEAD() external view returns (uint64);

    function RELAY_CONSTANT_OVERHEAD() external view returns (uint64);

    function RELAY_GAS_CHECK_BUFFER() external view returns (uint64);

    function RELAY_RESERVED_GAS() external view returns (uint64);

    function baseGas(bytes memory _message, uint32 _minGasLimit) external pure returns (uint64);

    function failedMessages(bytes32) external view returns (bool);

    function initialize() external;

    function l1CrossDomainMessenger() external view returns (address);

    function messageNonce() external view returns (uint256);

    function paused() external view returns (bool);

    function relayMessage(
        uint256 _nonce,
        address _sender,
        address _target,
        uint256 _value,
        uint256 _minGasLimit,
        bytes memory _message
    ) external;

    function sendMessage(address _target, bytes memory _message, uint32 _minGasLimit) external;

    function successfulMessages(bytes32) external view returns (bool);

    function version() external view returns (string memory);

    function xDomainMessageSender() external view returns (address);
}

// src/contracts/Miscellany/FraxFarmQuitCreditor/IExponentialPriceOracle.sol

interface IExponentialPriceOracle {
    function getPrices() external view returns (bool _isBadData, uint256 _priceLow, uint256 _priceHigh);

    function priceEnd() external view returns (uint256);

    function pricePerShare() external view returns (uint256 _price);

    function priceStart() external view returns (uint256);

    function timeEnd() external view returns (uint256);

    function timeStart() external view returns (uint256);
}

// src/contracts/Miscellany/OwnedV2.sol

// https://docs.synthetix.io/contracts/Owned
contract OwnedV2 {
    error OwnerCannotBeZero();
    error InvalidOwnershipAcceptance();
    error OnlyOwner();

    address public owner;
    address public nominatedOwner;

    constructor(address _owner) {
        // require(_owner != address(0), "Owner address cannot be 0");
        if (_owner == address(0)) revert OwnerCannotBeZero();
        owner = _owner;
        emit OwnerChanged(address(0), _owner);
    }

    function nominateNewOwner(address _owner) external onlyOwner {
        nominatedOwner = _owner;
        emit OwnerNominated(_owner);
    }

    function acceptOwnership() external {
        // require(msg.sender == nominatedOwner, "You must be nominated before you can accept ownership");
        if (msg.sender != nominatedOwner) revert InvalidOwnershipAcceptance();
        emit OwnerChanged(owner, nominatedOwner);
        owner = nominatedOwner;
        nominatedOwner = address(0);
    }

    modifier onlyOwner() {
        // require(msg.sender == owner, "Only the contract owner may perform this action");
        if (msg.sender != owner) revert OnlyOwner();
        _;
    }

    event OwnerNominated(address newOwner);
    event OwnerChanged(address oldOwner, address newOwner);
}

// node_modules/@openzeppelin/contracts/token/ERC20/utils/SafeERC20.sol

// OpenZeppelin Contracts (last updated v4.7.0) (token/ERC20/utils/SafeERC20.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;

    function safeTransfer(
        IERC20 token,
        address to,
        uint256 value
    ) internal {
        _callOptionalReturn(token, abi.encodeWithSelector(token.transfer.selector, to, value));
    }

    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));
    }

    function safeIncreaseAllowance(
        IERC20 token,
        address spender,
        uint256 value
    ) internal {
        uint256 newAllowance = token.allowance(address(this), spender) + value;
        _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
    }

    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");
            uint256 newAllowance = oldAllowance - value;
            _callOptionalReturn(token, abi.encodeWithSelector(token.approve.selector, spender, newAllowance));
        }
    }

    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");
        if (returndata.length > 0) {
            // Return data is optional
            require(abi.decode(returndata, (bool)), "SafeERC20: ERC20 operation did not succeed");
        }
    }
}

// src/contracts/Miscellany/FraxFarmQuitCreditor/L1QuitCreditorReceiverConverter.sol

// ====================================================================
// |     ______                   _______                             |
// |    / _____________ __  __   / ____(_____  ____ _____  ________   |
// |   / /_  / ___/ __ `| |/_/  / /_  / / __ \/ __ `/ __ \/ ___/ _ \  |
// |  / __/ / /  / /_/ _>  <   / __/ / / / / / /_/ / / / / /__/  __/  |
// | /_/   /_/   \__,_/_/|_|  /_/   /_/_/ /_/\__,_/_/ /_/\___/\___/   |
// |                                                                  |
// ====================================================================
// ================= L1QuitCreditorReceiverConverter ==================
// ====================================================================
// Accepts an L1 message from an Ethereum Mainnet FraxFarmQuitCreditor_XXX and converts the provided USD value to another token

// Frax Finance: https://github.com/FraxFinance

// Primary Author(s)
// Travis Moore: https://github.com/FortisFortuna

// Reviewer(s) / Contributor(s)
// Dennis: https://github.com/denett

/// @notice Accepts an L1 message from an Ethereum Mainnet FraxFarmQuitCreditor_XXX and converts the provided USD value to another token
contract L1QuitCreditorReceiverConverter is ReentrancyGuard, OwnedV2 {
    // STATE VARIABLES
    // ===================================================

    /// @notice Fraxtal CrossDomainMessenger
    ICrossDomainMessenger public messenger = ICrossDomainMessenger(0x4200000000000000000000000000000000000007);

    /// @notice Address of the L1 FraxFarmQuitCreditor_XXX
    address public quitCreditorAddress;

    /// @notice Token that the L1 USD credit is being exchanged for
    IERC20 public conversionToken;

    /// @notice Manually set conversion price (USDe18 per 1e18 conversion token)
    uint256 public conversionPrice;

    /// @notice Used for testing
    mapping(address pinger => Ping lastPing) public lastPingReceived;

    // STRUCTS
    // ===================================================

    /// @notice Ping used for testing purposes
    /// @param sourceTs Timestamp the ping was triggered on Ethereum
    /// @param fraxtalTs Timestamp the ping was received on this contract
    struct Ping {
        uint256 sourceTs;
        uint256 fraxtalTs;
    }

    // MODIFIERS
    // ===================================================

    modifier correctSender() {
        // Make sure the direct msg.sender is the messenger
        if (msg.sender != address(messenger)) revert BadSender();

        // Make sure that the caller on L1 was the FraxFarmQuitCreditor_XXX
        if (messenger.xDomainMessageSender() != quitCreditorAddress) revert BadXDomainMessageSender();

        _;
    }

    // CONSTRUCTOR
    // ===================================================

    /// @notice Constructor
    /// @param _owner The owner of the contract
    /// @param _quitCreditor Address of the L1 FraxFarmQuitCreditor_XXX
    /// @param _conversionToken Token being converted to
    /// @param _conversionPrice Price of the conversion token, in E18 USD
    constructor(
        address _owner,
        address _quitCreditor,
        address _conversionToken,
        uint256 _conversionPrice
    ) OwnedV2(_owner) {
        quitCreditorAddress = _quitCreditor;
        conversionToken = IERC20(_conversionToken);
        conversionPrice = _conversionPrice;
    }

    // PUBLIC FUNCTIONS
    // ===================================================

    /// @notice Used to test connectivity. Receives a dummy message from Ethereum
    /// @param _pinger Original pinger on Ethereum
    /// @param _sourceTs Time the ping was sent on Ethereum
    function receivePing(address _pinger, uint256 _sourceTs) external nonReentrant correctSender {
        // Mark when the last ping was received
        lastPingReceived[_pinger] = Ping(_sourceTs, block.timestamp);

        emit PingReceived(_pinger, _sourceTs, block.timestamp);
    }

    /// @notice Processes the L1-originating message from the FraxFarmQuitCreditor_XXX
    /// @param _originalStaker Address of the original farmer who held the position
    /// @param _recipient Recipient for the newly converted tokens
    /// @param _usdCredit The USD value that should be converted into the conversion token
    function processMessage(
        address _originalStaker,
        address _recipient,
        uint256 _usdCredit
    ) external nonReentrant correctSender returns (uint256 _convTknOut) {
        // Do the conversion
        _convTknOut = (_usdCredit * 1e18) / conversionPrice;

        // Send out the tokens
        SafeERC20.safeTransfer(conversionToken, _recipient, _convTknOut);

        emit MessageProcessed(_originalStaker, _recipient, _usdCredit, _convTknOut);
    }

    // RESTRICTED FUNCTIONS
    // ===================================================

    /// @notice Allows the owner to recover any ERC20
    /// @param tokenAddress The address of the token to recover
    /// @param tokenAmount The amount of the token to recover
    function recoverERC20(address tokenAddress, uint256 tokenAmount) external onlyOwner {
        SafeERC20.safeTransfer(IERC20(tokenAddress), msg.sender, tokenAmount);
    }

    /// @notice Set the price of the conversion token, in E18 USD
    /// @param _newConversionPrice The new conversion price
    function setConversionPrice(uint256 _newConversionPrice) external onlyOwner {
        conversionPrice = _newConversionPrice;
    }

    /// @notice Set the address for the L1 FraxFarmQuitCreditor_XXX
    /// @param _newQuitCreditorAddress The new address for the L1 FraxFarmQuitCreditor_XXX
    function setQuitCreditorAddress(address _newQuitCreditorAddress) external onlyOwner {
        quitCreditorAddress = _newQuitCreditorAddress;
    }

    // ERRORS
    // ===================================================

    /// @notice Only the CrossDomainMessenger should be the sender
    error BadSender();

    /// @notice Only the FraxFarmQuitCreditor_XXX should be the messenger.xDomainMessageSender()
    error BadXDomainMessageSender();

    // EVENTS
    // ===================================================

    /// @notice When the ping from L1 was received
    /// @param sender The msg.sender that triggered the ping on the FraxFarmQuitCreditor_XXX
    /// @param sourceTs Ethereum time the ping was received
    /// @param fraxtalTs Fraxtal time the ping was received
    event PingReceived(address indexed sender, uint256 sourceTs, uint256 fraxtalTs);

    /// @notice When the crediting message from the L1 FraxFarmQuitCreditor_XXX was processed
    /// @param originalStaker Address of the original farmer who held the position
    /// @param recipient Recipient for the newly converted tokens
    /// @param usdCredit Amount of USD credit processed
    /// @param convTknOut Conversion token output amount to the recipient
    event MessageProcessed(
        address indexed originalStaker,
        address indexed recipient,
        uint256 usdCredit,
        uint256 convTknOut
    );

    /// @notice When ERC20 tokens were recovered
    /// @param token Token address
    /// @param amount Amount of tokens collected
    event RecoveredERC20(address token, uint256 amount);
}

Contract Security Audit

Contract ABI

API
[{"inputs":[{"internalType":"address","name":"_owner","type":"address"},{"internalType":"address","name":"_quitCreditor","type":"address"},{"internalType":"address","name":"_conversionToken","type":"address"},{"internalType":"uint256","name":"_conversionPrice","type":"uint256"}],"stateMutability":"nonpayable","type":"constructor"},{"inputs":[],"name":"BadSender","type":"error"},{"inputs":[],"name":"BadXDomainMessageSender","type":"error"},{"inputs":[],"name":"InvalidOwnershipAcceptance","type":"error"},{"inputs":[],"name":"OnlyOwner","type":"error"},{"inputs":[],"name":"OwnerCannotBeZero","type":"error"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"originalStaker","type":"address"},{"indexed":true,"internalType":"address","name":"recipient","type":"address"},{"indexed":false,"internalType":"uint256","name":"usdCredit","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"convTknOut","type":"uint256"}],"name":"MessageProcessed","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"oldOwner","type":"address"},{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"newOwner","type":"address"}],"name":"OwnerNominated","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"sender","type":"address"},{"indexed":false,"internalType":"uint256","name":"sourceTs","type":"uint256"},{"indexed":false,"internalType":"uint256","name":"fraxtalTs","type":"uint256"}],"name":"PingReceived","type":"event"},{"anonymous":false,"inputs":[{"indexed":false,"internalType":"address","name":"token","type":"address"},{"indexed":false,"internalType":"uint256","name":"amount","type":"uint256"}],"name":"RecoveredERC20","type":"event"},{"inputs":[],"name":"acceptOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"conversionPrice","outputs":[{"internalType":"uint256","name":"","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"conversionToken","outputs":[{"internalType":"contract IERC20","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"pinger","type":"address"}],"name":"lastPingReceived","outputs":[{"internalType":"uint256","name":"sourceTs","type":"uint256"},{"internalType":"uint256","name":"fraxtalTs","type":"uint256"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"messenger","outputs":[{"internalType":"contract ICrossDomainMessenger","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_owner","type":"address"}],"name":"nominateNewOwner","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"nominatedOwner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_originalStaker","type":"address"},{"internalType":"address","name":"_recipient","type":"address"},{"internalType":"uint256","name":"_usdCredit","type":"uint256"}],"name":"processMessage","outputs":[{"internalType":"uint256","name":"_convTknOut","type":"uint256"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"quitCreditorAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_pinger","type":"address"},{"internalType":"uint256","name":"_sourceTs","type":"uint256"}],"name":"receivePing","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"tokenAddress","type":"address"},{"internalType":"uint256","name":"tokenAmount","type":"uint256"}],"name":"recoverERC20","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"uint256","name":"_newConversionPrice","type":"uint256"}],"name":"setConversionPrice","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"_newQuitCreditorAddress","type":"address"}],"name":"setQuitCreditorAddress","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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Swarm Source

ipfs://6599203d0b8e04f9a0e10bbbe30a45d0e8bab69c36e3d979234e7dc634fbb1ca

Block Transaction Difficulty Gas Used Reward
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Block Uncle Number Difficulty Gas Used Reward
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Validator Index Block Amount
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Transaction Hash Block Value Eth2 PubKey Valid
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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.