Contract

Contract Source Code (Solidity Standard Json-Input format)

IDE

• Blockscan IDE
• 🤖 Code ReaderBeta
• Remix IDE

More Options

• Similar
• Sol2Uml
• Submit Audit
• Compare

pragma solidity >=0.8.4;

import "../registry/ENS.sol";
import "./IReverseRegistrar.sol";
import "@openzeppelin/contracts/access/Ownable.sol";
import "../root/Controllable.sol";

abstract contract NameResolver {
    function setName(bytes32 node, string memory name) public virtual;
}

bytes32 constant lookup = 0x3031323334353637383961626364656600000000000000000000000000000000;

bytes32 constant ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;

// namehash('addr.reverse')

contract ReverseRegistrar is Ownable, Controllable, IReverseRegistrar {
    ENS public immutable ens;
    NameResolver public defaultResolver;

    event ReverseClaimed(address indexed addr, bytes32 indexed node);
    event DefaultResolverChanged(NameResolver indexed resolver);

    /**
     * @dev Constructor
     * @param ensAddr The address of the ENS registry.
     */
    constructor(ENS ensAddr) {
        ens = ensAddr;

        // Assign ownership of the reverse record to our deployer
        ReverseRegistrar oldRegistrar = ReverseRegistrar(
            ensAddr.owner(ADDR_REVERSE_NODE)
        );
        if (address(oldRegistrar) != address(0x0)) {
            oldRegistrar.claim(msg.sender);
        }
    }

    modifier authorised(address addr) {
        require(
            addr == msg.sender ||
                controllers[msg.sender] ||
                ens.isApprovedForAll(addr, msg.sender) ||
                ownsContract(addr),
            "ReverseRegistrar: Caller is not a controller or authorised by address or the address itself"
        );
        _;
    }

    function setDefaultResolver(address resolver) public override onlyOwner {
        require(
            address(resolver) != address(0),
            "ReverseRegistrar: Resolver address must not be 0"
        );
        defaultResolver = NameResolver(resolver);
        emit DefaultResolverChanged(NameResolver(resolver));
    }

    /**
     * @dev Transfers ownership of the reverse ENS record associated with the
     *      calling account.
     * @param owner The address to set as the owner of the reverse record in ENS.
     * @return The ENS node hash of the reverse record.
     */
    function claim(address owner) public override returns (bytes32) {
        return claimForAddr(msg.sender, owner, address(defaultResolver));
    }

    /**
     * @dev Transfers ownership of the reverse ENS record associated with the
     *      calling account.
     * @param addr The reverse record to set
     * @param owner The address to set as the owner of the reverse record in ENS.
     * @param resolver The resolver of the reverse node
     * @return The ENS node hash of the reverse record.
     */
    function claimForAddr(
        address addr,
        address owner,
        address resolver
    ) public override authorised(addr) returns (bytes32) {
        bytes32 labelHash = sha3HexAddress(addr);
        bytes32 reverseNode = keccak256(
            abi.encodePacked(ADDR_REVERSE_NODE, labelHash)
        );
        emit ReverseClaimed(addr, reverseNode);
        ens.setSubnodeRecord(ADDR_REVERSE_NODE, labelHash, owner, resolver, 0);
        return reverseNode;
    }

    /**
     * @dev Transfers ownership of the reverse ENS record associated with the
     *      calling account.
     * @param owner The address to set as the owner of the reverse record in ENS.
     * @param resolver The address of the resolver to set; 0 to leave unchanged.
     * @return The ENS node hash of the reverse record.
     */
    function claimWithResolver(
        address owner,
        address resolver
    ) public override returns (bytes32) {
        return claimForAddr(msg.sender, owner, resolver);
    }

    /**
     * @dev Sets the `name()` record for the reverse ENS record associated with
     * the calling account. First updates the resolver to the default reverse
     * resolver if necessary.
     * @param name The name to set for this address.
     * @return The ENS node hash of the reverse record.
     */
    function setName(string memory name) public override returns (bytes32) {
        return
            setNameForAddr(
                msg.sender,
                msg.sender,
                address(defaultResolver),
                name
            );
    }

    /**
     * @dev Sets the `name()` record for the reverse ENS record associated with
     * the account provided. Updates the resolver to a designated resolver
     * Only callable by controllers and authorised users
     * @param addr The reverse record to set
     * @param owner The owner of the reverse node
     * @param resolver The resolver of the reverse node
     * @param name The name to set for this address.
     * @return The ENS node hash of the reverse record.
     */
    function setNameForAddr(
        address addr,
        address owner,
        address resolver,
        string memory name
    ) public override returns (bytes32) {
        bytes32 node = claimForAddr(addr, owner, resolver);
        NameResolver(resolver).setName(node, name);
        return node;
    }

    /**
     * @dev Returns the node hash for a given account's reverse records.
     * @param addr The address to hash
     * @return The ENS node hash.
     */
    function node(address addr) public pure override returns (bytes32) {
        return
            keccak256(
                abi.encodePacked(ADDR_REVERSE_NODE, sha3HexAddress(addr))
            );
    }

    /**
     * @dev An optimised function to compute the sha3 of the lower-case
     *      hexadecimal representation of an Ethereum address.
     * @param addr The address to hash
     * @return ret The SHA3 hash of the lower-case hexadecimal encoding of the
     *         input address.
     */
    function sha3HexAddress(address addr) private pure returns (bytes32 ret) {
        assembly {
            for {
                let i := 40
            } gt(i, 0) {

            } {
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
                i := sub(i, 1)
                mstore8(i, byte(and(addr, 0xf), lookup))
                addr := div(addr, 0x10)
            }

            ret := keccak256(0, 40)
        }
    }

    function ownsContract(address addr) internal view returns (bool) {
        try Ownable(addr).owner() returns (address owner) {
            return owner == msg.sender;
        } catch {
            return false;
        }
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts (last updated v4.7.0) (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 anymore. Can only be called by the current owner.
     *
     * NOTE: Renouncing ownership will leave the contract without an owner,
     * thereby removing 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
// 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;
    }
}

pragma solidity >=0.8.4;

interface ENS {
    // Logged when the owner of a node assigns a new owner to a subnode.
    event NewOwner(bytes32 indexed node, bytes32 indexed label, address owner);

    // Logged when the owner of a node transfers ownership to a new account.
    event Transfer(bytes32 indexed node, address owner);

    // Logged when the resolver for a node changes.
    event NewResolver(bytes32 indexed node, address resolver);

    // Logged when the TTL of a node changes
    event NewTTL(bytes32 indexed node, uint64 ttl);

    // Logged when an operator is added or removed.
    event ApprovalForAll(
        address indexed owner,
        address indexed operator,
        bool approved
    );

    function setRecord(
        bytes32 node,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeRecord(
        bytes32 node,
        bytes32 label,
        address owner,
        address resolver,
        uint64 ttl
    ) external;

    function setSubnodeOwner(
        bytes32 node,
        bytes32 label,
        address owner
    ) external returns (bytes32);

    function setResolver(bytes32 node, address resolver) external;

    function setOwner(bytes32 node, address owner) external;

    function setTTL(bytes32 node, uint64 ttl) external;

    function setApprovalForAll(address operator, bool approved) external;

    function owner(bytes32 node) external view returns (address);

    function resolver(bytes32 node) external view returns (address);

    function ttl(bytes32 node) external view returns (uint64);

    function recordExists(bytes32 node) external view returns (bool);

    function isApprovedForAll(
        address owner,
        address operator
    ) external view returns (bool);
}

pragma solidity >=0.8.4;

interface IReverseRegistrar {
    function setDefaultResolver(address resolver) external;

    function claim(address owner) external returns (bytes32);

    function claimForAddr(
        address addr,
        address owner,
        address resolver
    ) external returns (bytes32);

    function claimWithResolver(
        address owner,
        address resolver
    ) external returns (bytes32);

    function setName(string memory name) external returns (bytes32);

    function setNameForAddr(
        address addr,
        address owner,
        address resolver,
        string memory name
    ) external returns (bytes32);

    function node(address addr) external pure returns (bytes32);
}

pragma solidity ^0.8.4;

import "@openzeppelin/contracts/access/Ownable.sol";

contract Controllable is Ownable {
    mapping(address => bool) public controllers;

    event ControllerChanged(address indexed controller, bool enabled);

    modifier onlyController() {
        require(
            controllers[msg.sender],
            "Controllable: Caller is not a controller"
        );
        _;
    }

    function setController(address controller, bool enabled) public onlyOwner {
        controllers[controller] = enabled;
        emit ControllerChanged(controller, enabled);
    }
}

{
  "evmVersion": "london",
  "libraries": {},
  "metadata": {
    "bytecodeHash": "ipfs",
    "useLiteralContent": true
  },
  "optimizer": {
    "enabled": true,
    "runs": 1300
  },
  "remappings": [],
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  }
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract ENS","name":"ensAddr","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"controller","type":"address"},{"indexed":false,"internalType":"bool","name":"enabled","type":"bool"}],"name":"ControllerChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"contract NameResolver","name":"resolver","type":"address"}],"name":"DefaultResolverChanged","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"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"addr","type":"address"},{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"ReverseClaimed","type":"event"},{"inputs":[{"internalType":"address","name":"owner","type":"address"}],"name":"claim","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"resolver","type":"address"}],"name":"claimForAddr","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"resolver","type":"address"}],"name":"claimWithResolver","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"","type":"address"}],"name":"controllers","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"defaultResolver","outputs":[{"internalType":"contract NameResolver","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[],"name":"ens","outputs":[{"internalType":"contract ENS","name":"","type":"address"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"}],"name":"node","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"pure","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":"controller","type":"address"},{"internalType":"bool","name":"enabled","type":"bool"}],"name":"setController","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"resolver","type":"address"}],"name":"setDefaultResolver","outputs":[],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"string","name":"name","type":"string"}],"name":"setName","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"addr","type":"address"},{"internalType":"address","name":"owner","type":"address"},{"internalType":"address","name":"resolver","type":"address"},{"internalType":"string","name":"name","type":"string"}],"name":"setNameForAddr","outputs":[{"internalType":"bytes32","name":"","type":"bytes32"}],"stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"address","name":"newOwner","type":"address"}],"name":"transferOwnership","outputs":[],"stateMutability":"nonpayable","type":"function"}]

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