Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE

More Options

• Is this a proxy?
• Similar
• Submit Audit
• Compare

// SPDX-License-Identifier: MIT

pragma solidity =0.8.16;

import {Clones} from "@openzeppelin/contracts/proxy/Clones.sol";
import {Ownable} from "@openzeppelin/contracts/access/Ownable.sol";

import {IScrollStandardERC20Factory} from "./IScrollStandardERC20Factory.sol";

/// @title ScrollStandardERC20Factory
/// @notice The `ScrollStandardERC20Factory` is used to deploy `ScrollStandardERC20` for `L2StandardERC20Gateway`.
/// It uses the `Clones` contract to deploy contract with minimum gas usage.
/// @dev The implementation of deployed token is non-upgradable. This design may be changed in the future.
contract ScrollStandardERC20Factory is Ownable, IScrollStandardERC20Factory {
    /// @notice The address of `ScrollStandardERC20` implementation.
    address public implementation;

    constructor(address _implementation) {
        require(_implementation != address(0), "zero implementation address");

        implementation = _implementation;
    }

    /// @inheritdoc IScrollStandardERC20Factory
    function computeL2TokenAddress(address _gateway, address _l1Token) external view returns (address) {
        // In StandardERC20Gateway, all corresponding l2 tokens are depoyed by Create2 with salt,
        // we can calculate the l2 address directly.
        bytes32 _salt = _getSalt(_gateway, _l1Token);

        return Clones.predictDeterministicAddress(implementation, _salt);
    }

    /// @inheritdoc IScrollStandardERC20Factory
    /// @dev This function should only be called by owner to avoid DDoS attack on StandardTokenBridge.
    function deployL2Token(address _gateway, address _l1Token) external onlyOwner returns (address) {
        bytes32 _salt = _getSalt(_gateway, _l1Token);

        address _l2Token = Clones.cloneDeterministic(implementation, _salt);

        emit DeployToken(_l1Token, _l2Token);

        return _l2Token;
    }

    function _getSalt(address _gateway, address _l1Token) internal pure returns (bytes32) {
        return keccak256(abi.encodePacked(_gateway, keccak256(abi.encodePacked(_l1Token))));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (proxy/Clones.sol)

pragma solidity ^0.8.0;

/**
 * @dev https://eips.ethereum.org/EIPS/eip-1167[EIP 1167] is a standard for
 * deploying minimal proxy contracts, also known as "clones".
 *
 * > To simply and cheaply clone contract functionality in an immutable way, this standard specifies
 * > a minimal bytecode implementation that delegates all calls to a known, fixed address.
 *
 * The library includes functions to deploy a proxy using either `create` (traditional deployment) or `create2`
 * (salted deterministic deployment). It also includes functions to predict the addresses of clones deployed using the
 * deterministic method.
 *
 * _Available since v3.4._
 */
library Clones {
    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create opcode, which should never revert.
     */
    function clone(address implementation) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create(0, 0x09, 0x37)
        }
        require(instance != address(0), "ERC1167: create failed");
    }

    /**
     * @dev Deploys and returns the address of a clone that mimics the behaviour of `implementation`.
     *
     * This function uses the create2 opcode and a `salt` to deterministically deploy
     * the clone. Using the same `implementation` and `salt` multiple time will revert, since
     * the clones cannot be deployed twice at the same address.
     */
    function cloneDeterministic(address implementation, bytes32 salt) internal returns (address instance) {
        /// @solidity memory-safe-assembly
        assembly {
            // Cleans the upper 96 bits of the `implementation` word, then packs the first 3 bytes
            // of the `implementation` address with the bytecode before the address.
            mstore(0x00, or(shr(0xe8, shl(0x60, implementation)), 0x3d602d80600a3d3981f3363d3d373d3d3d363d73000000))
            // Packs the remaining 17 bytes of `implementation` with the bytecode after the address.
            mstore(0x20, or(shl(0x78, implementation), 0x5af43d82803e903d91602b57fd5bf3))
            instance := create2(0, 0x09, 0x37, salt)
        }
        require(instance != address(0), "ERC1167: create2 failed");
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt,
        address deployer
    ) internal pure returns (address predicted) {
        /// @solidity memory-safe-assembly
        assembly {
            let ptr := mload(0x40)
            mstore(add(ptr, 0x38), deployer)
            mstore(add(ptr, 0x24), 0x5af43d82803e903d91602b57fd5bf3ff)
            mstore(add(ptr, 0x14), implementation)
            mstore(ptr, 0x3d602d80600a3d3981f3363d3d373d3d3d363d73)
            mstore(add(ptr, 0x58), salt)
            mstore(add(ptr, 0x78), keccak256(add(ptr, 0x0c), 0x37))
            predicted := keccak256(add(ptr, 0x43), 0x55)
        }
    }

    /**
     * @dev Computes the address of a clone deployed using {Clones-cloneDeterministic}.
     */
    function predictDeterministicAddress(
        address implementation,
        bytes32 salt
    ) internal view returns (address predicted) {
        return predictDeterministicAddress(implementation, salt, address(this));
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.9.0) (access/Ownable.sol)

pragma solidity ^0.8.0;

import "../utils/Context.sol";

/**
 * @dev Contract module which provides a basic access control mechanism, where
 * there is an account (an owner) that can be granted exclusive access to
 * specific functions.
 *
 * By default, the owner account will be the one that deploys the contract. This
 * can later be changed with {transferOwnership}.
 *
 * This module is used through inheritance. It will make available the modifier
 * `onlyOwner`, which can be applied to your functions to restrict their use to
 * the owner.
 */
abstract contract Ownable is Context {
    address private _owner;

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

    /**
     * @dev Initializes the contract setting the deployer as the initial owner.
     */
    constructor() {
        _transferOwnership(_msgSender());
    }

    /**
     * @dev Throws if called by any account other than the owner.
     */
    modifier onlyOwner() {
        _checkOwner();
        _;
    }

    /**
     * @dev Returns the address of the current owner.
     */
    function owner() public view virtual returns (address) {
        return _owner;
    }

    /**
     * @dev Throws if the sender is not the owner.
     */
    function _checkOwner() internal view virtual {
        require(owner() == _msgSender(), "Ownable: caller is not the owner");
    }

    /**
     * @dev Leaves the contract without owner. It will not be possible to call
     * `onlyOwner` functions. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby disabling any functionality that is only available to the owner.
     */
    function renounceOwnership() public virtual onlyOwner {
        _transferOwnership(address(0));
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Can only be called by the current owner.
     */
    function transferOwnership(address newOwner) public virtual onlyOwner {
        require(newOwner != address(0), "Ownable: new owner is the zero address");
        _transferOwnership(newOwner);
    }

    /**
     * @dev Transfers ownership of the contract to a new account (`newOwner`).
     * Internal function without access restriction.
     */
    function _transferOwnership(address newOwner) internal virtual {
        address oldOwner = _owner;
        _owner = newOwner;
        emit OwnershipTransferred(oldOwner, newOwner);
    }
}

// SPDX-License-Identifier: MIT

pragma solidity ^0.8.16;

interface IScrollStandardERC20Factory {
    /// @notice Emitted when a l2 token is deployed.
    /// @param _l1Token The address of the l1 token.
    /// @param _l2Token The address of the l2 token.
    event DeployToken(address indexed _l1Token, address indexed _l2Token);

    /// @notice Compute the corresponding l2 token address given l1 token address.
    /// @param _gateway The address of gateway contract.
    /// @param _l1Token The address of l1 token.
    function computeL2TokenAddress(address _gateway, address _l1Token) external view returns (address);

    /// @notice Deploy the corresponding l2 token address given l1 token address.
    /// @param _gateway The address of gateway contract.
    /// @param _l1Token The address of l1 token.
    function deployL2Token(address _gateway, address _l1Token) external returns (address);
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/Context.sol)

pragma solidity ^0.8.0;

/**
 * @dev Provides information about the current execution context, including the
 * sender of the transaction and its data. While these are generally available
 * via msg.sender and msg.data, they should not be accessed in such a direct
 * manner, since when dealing with meta-transactions the account sending and
 * paying for execution may not be the actual sender (as far as an application
 * is concerned).
 *
 * This contract is only required for intermediate, library-like contracts.
 */
abstract contract Context {
    function _msgSender() internal view virtual returns (address) {
        return msg.sender;
    }

    function _msgData() internal view virtual returns (bytes calldata) {
        return msg.data;
    }
}

{
  "optimizer": {
    "enabled": true,
    "runs": 200
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

[{"inputs":[{"internalType":"address","name":"_implementation","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"_l1Token","type":"address"},{"indexed":true,"internalType":"address","name":"_l2Token","type":"address"}],"name":"DeployToken","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":[{"internalType":"address","name":"_gateway","type":"address"},{"internalType":"address","name":"_l1Token","type":"address"}],"name":"computeL2TokenAddress","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"_gateway","type":"address"},{"internalType":"address","name":"_l1Token","type":"address"}],"name":"deployL2Token","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[],"name":"implementation","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"owner","outputs":[{"internalType":"address","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"renounceOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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

0000000000000000000000004dbba612a46ffdf8f8052ba8853aef50e01293ab

-----Decoded View---------------
Arg [0] : _implementation (address): 0x4Dbba612a46FFdf8f8052BA8853Aef50E01293Ab

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 0000000000000000000000004dbba612a46ffdf8f8052ba8853aef50e01293ab