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Outline

• interface ENS
•    - function setRecord(bytes32 node, addr ...
•    - function setSubnodeRecord(bytes32 nod ...
•    - function setSubnodeOwner(bytes32 node ...
•    - function setResolver(bytes32 node, ad ...
•    - function setOwner(bytes32 node, addre ...
•    - function setTTL(bytes32 node, uint64 ...
•    - function setApprovalForAll(address op ...
•    - function owner(bytes32 node)
•    - function resolver(bytes32 node)
•    - function ttl(bytes32 node)
•    - function recordExists(bytes32 node)
•    - function isApprovedForAll(address own ...
•  contract Resolver
•    - function setName(bytes32 node, string ...
•  contract ReverseRegistrar
•    - function claim(address owner)
•    - function claimWithResolver(address ow ...
•    - function setName(string memory name)
•    - function node(address addr)
•    - function sha3HexAddress(address addr)
•  contract DefaultReverseResolver *
•    - function setName(bytes32 node, string ...

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/**
 *Submitted for verification at Etherscan.io on 2020-01-30
*/

// File: @ensdomains/ens/contracts/ENS.sol

pragma solidity >=0.4.24;

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);
}

// File: @ensdomains/ens/contracts/ReverseRegistrar.sol

pragma solidity ^0.5.0;


contract Resolver {
    function setName(bytes32 node, string memory name) public;
}

contract ReverseRegistrar {
    // namehash('addr.reverse')
    bytes32 public constant ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;

    ENS public ens;
    Resolver public defaultResolver;

    /**
     * @dev Constructor
     * @param ensAddr The address of the ENS registry.
     * @param resolverAddr The address of the default reverse resolver.
     */
    constructor(ENS ensAddr, Resolver resolverAddr) public {
        ens = ensAddr;
        defaultResolver = resolverAddr;

        // Assign ownership of the reverse record to our deployer
        ReverseRegistrar oldRegistrar = ReverseRegistrar(ens.owner(ADDR_REVERSE_NODE));
        if (address(oldRegistrar) != address(0x0)) {
            oldRegistrar.claim(msg.sender);
        }
    }
    
    /**
     * @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 returns (bytes32) {
        return claimWithResolver(owner, address(0x0));
    }

    /**
     * @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 returns (bytes32) {
        bytes32 label = sha3HexAddress(msg.sender);
        bytes32 node = keccak256(abi.encodePacked(ADDR_REVERSE_NODE, label));
        address currentOwner = ens.owner(node);

        // Update the resolver if required
        if (resolver != address(0x0) && resolver != ens.resolver(node)) {
            // Transfer the name to us first if it's not already
            if (currentOwner != address(this)) {
                ens.setSubnodeOwner(ADDR_REVERSE_NODE, label, address(this));
                currentOwner = address(this);
            }
            ens.setResolver(node, resolver);
        }

        // Update the owner if required
        if (currentOwner != owner) {
            ens.setSubnodeOwner(ADDR_REVERSE_NODE, label, owner);
        }

        return node;
    }

    /**
     * @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 returns (bytes32) {
        bytes32 node = claimWithResolver(address(this), address(defaultResolver));
        defaultResolver.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 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 The SHA3 hash of the lower-case hexadecimal encoding of the
     *         input address.
     */
    function sha3HexAddress(address addr) private pure returns (bytes32 ret) {
        addr;
        ret; // Stop warning us about unused variables
        assembly {
            let lookup := 0x3031323334353637383961626364656600000000000000000000000000000000

            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)
        }
    }
}

// File: @ensdomains/resolver/contracts/DefaultReverseResolver.sol

pragma solidity >=0.4.25;



/**
 * @dev Provides a default implementation of a resolver for reverse records,
 * which permits only the owner to update it.
 */
contract DefaultReverseResolver {
    // namehash('addr.reverse')
    bytes32 constant ADDR_REVERSE_NODE = 0x91d1777781884d03a6757a803996e38de2a42967fb37eeaca72729271025a9e2;

    ENS public ens;
    mapping (bytes32 => string) public name;

    /**
     * @dev Only permits calls by the reverse registrar.
     * @param node The node permission is required for.
     */
    modifier onlyOwner(bytes32 node) {
        require(msg.sender == ens.owner(node));
        _;
    }

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

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

    /**
     * @dev Sets the name for a node.
     * @param node The node to update.
     * @param _name The name to set.
     */
    function setName(bytes32 node, string memory _name) public onlyOwner(node) {
        name[node] = _name;
    }
}

• No Contract Security Audit Submitted- Submit Audit Here

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00000000000000000000000000000000000c2e074ec69a0dfb2997ba6c7d2e1e

-----Decoded View---------------
Arg [0] : ensAddr (address): 0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 00000000000000000000000000000000000c2e074ec69a0dfb2997ba6c7d2e1e

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bzzr://dc267d537b31c3538e97b089b0b2e4fc6ccf9312b39ce36194955127da2b50a6