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// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "@ensdomains/ens-contracts/contracts/resolvers/PublicResolver.sol";

contract EarthLabResolver is PublicResolver {
  constructor(INameWrapper wrapper)
    PublicResolver(
      ENS(0x00000000000C2E074eC69A0dFb2997BA6C7d2e1e),
      wrapper,
      0x0000000000000000000000000000000000000000,
      0x0000000000000000000000000000000000000000
    )
  {}
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../registry/ENS.sol";
import "./profiles/ABIResolver.sol";
import "./profiles/AddrResolver.sol";
import "./profiles/ContentHashResolver.sol";
import "./profiles/DNSResolver.sol";
import "./profiles/InterfaceResolver.sol";
import "./profiles/NameResolver.sol";
import "./profiles/PubkeyResolver.sol";
import "./profiles/TextResolver.sol";
import "./Multicallable.sol";

interface INameWrapper {
    function ownerOf(uint256 id) external view returns (address);
}

/**
 * A simple resolver anyone can use; only allows the owner of a node to set its
 * address.
 */
contract PublicResolver is
    Multicallable,
    ABIResolver,
    AddrResolver,
    ContentHashResolver,
    DNSResolver,
    InterfaceResolver,
    NameResolver,
    PubkeyResolver,
    TextResolver
{
    ENS immutable ens;
    INameWrapper immutable nameWrapper;
    address immutable trustedETHController;
    address immutable trustedReverseRegistrar;

    /**
     * A mapping of operators. An address that is authorised for an address
     * may make any changes to the name that the owner could, but may not update
     * the set of authorisations.
     * (owner, operator) => approved
     */
    mapping(address => mapping(address => bool)) private _operatorApprovals;

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

    constructor(
        ENS _ens,
        INameWrapper wrapperAddress,
        address _trustedETHController,
        address _trustedReverseRegistrar
    ) {
        ens = _ens;
        nameWrapper = wrapperAddress;
        trustedETHController = _trustedETHController;
        trustedReverseRegistrar = _trustedReverseRegistrar;
    }

    /**
     * @dev See {IERC1155-setApprovalForAll}.
     */
    function setApprovalForAll(address operator, bool approved) external {
        require(
            msg.sender != operator,
            "ERC1155: setting approval status for self"
        );

        _operatorApprovals[msg.sender][operator] = approved;
        emit ApprovalForAll(msg.sender, operator, approved);
    }

    /**
     * @dev See {IERC1155-isApprovedForAll}.
     */
    function isApprovedForAll(address account, address operator)
        public
        view
        returns (bool)
    {
        return _operatorApprovals[account][operator];
    }

    function isAuthorised(bytes32 node) internal view override returns (bool) {
        if (
            msg.sender == trustedETHController ||
            msg.sender == trustedReverseRegistrar
        ) {
            return true;
        }
        address owner = ens.owner(node);
        if (owner == address(nameWrapper)) {
            owner = nameWrapper.ownerOf(uint256(node));
        }
        return owner == msg.sender || isApprovedForAll(owner, msg.sender);
    }

    function supportsInterface(bytes4 interfaceID)
        public
        view
        override(
            Multicallable,
            ABIResolver,
            AddrResolver,
            ContentHashResolver,
            DNSResolver,
            InterfaceResolver,
            NameResolver,
            PubkeyResolver,
            TextResolver
        )
        returns (bool)
    {
        return super.supportsInterface(interfaceID);
    }
}

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);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./IABIResolver.sol";
import "../ResolverBase.sol";

abstract contract ABIResolver is IABIResolver, ResolverBase {
    mapping(bytes32=>mapping(uint256=>bytes)) abis;

    /**
     * Sets the ABI associated with an ENS node.
     * Nodes may have one ABI of each content type. To remove an ABI, set it to
     * the empty string.
     * @param node The node to update.
     * @param contentType The content type of the ABI
     * @param data The ABI data.
     */
    function setABI(bytes32 node, uint256 contentType, bytes calldata data) virtual external authorised(node) {
        // Content types must be powers of 2
        require(((contentType - 1) & contentType) == 0);

        abis[node][contentType] = data;
        emit ABIChanged(node, contentType);
    }

    /**
     * Returns the ABI associated with an ENS node.
     * Defined in EIP205.
     * @param node The ENS node to query
     * @param contentTypes A bitwise OR of the ABI formats accepted by the caller.
     * @return contentType The content type of the return value
     * @return data The ABI data
     */
    function ABI(bytes32 node, uint256 contentTypes) virtual override external view returns (uint256, bytes memory) {
        mapping(uint256=>bytes) storage abiset = abis[node];

        for (uint256 contentType = 1; contentType <= contentTypes; contentType <<= 1) {
            if ((contentType & contentTypes) != 0 && abiset[contentType].length > 0) {
                return (contentType, abiset[contentType]);
            }
        }

        return (0, bytes(""));
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IABIResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./IAddrResolver.sol";
import "./IAddressResolver.sol";

abstract contract AddrResolver is IAddrResolver, IAddressResolver, ResolverBase {
    uint constant private COIN_TYPE_ETH = 60;

    mapping(bytes32=>mapping(uint=>bytes)) _addresses;

    /**
     * Sets the address associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param a The address to set.
     */
    function setAddr(bytes32 node, address a) virtual external authorised(node) {
        setAddr(node, COIN_TYPE_ETH, addressToBytes(a));
    }

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) virtual override public view returns (address payable) {
        bytes memory a = addr(node, COIN_TYPE_ETH);
        if(a.length == 0) {
            return payable(0);
        }
        return bytesToAddress(a);
    }

    function setAddr(bytes32 node, uint coinType, bytes memory a) virtual public authorised(node) {
        emit AddressChanged(node, coinType, a);
        if(coinType == COIN_TYPE_ETH) {
            emit AddrChanged(node, bytesToAddress(a));
        }
        _addresses[node][coinType] = a;
    }

    function addr(bytes32 node, uint coinType) virtual override public view returns(bytes memory) {
        return _addresses[node][coinType];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IAddrResolver).interfaceId || interfaceID == type(IAddressResolver).interfaceId || super.supportsInterface(interfaceID);
    }

    function bytesToAddress(bytes memory b) internal pure returns(address payable a) {
        require(b.length == 20);
        assembly {
            a := div(mload(add(b, 32)), exp(256, 12))
        }
    }

    function addressToBytes(address a) internal pure returns(bytes memory b) {
        b = new bytes(20);
        assembly {
            mstore(add(b, 32), mul(a, exp(256, 12)))
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./IContentHashResolver.sol";

abstract contract ContentHashResolver is IContentHashResolver, ResolverBase {
    mapping(bytes32=>bytes) hashes;

    /**
     * Sets the contenthash associated with an ENS node.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param hash The contenthash to set
     */
    function setContenthash(bytes32 node, bytes calldata hash) virtual external authorised(node) {
        hashes[node] = hash;
        emit ContenthashChanged(node, hash);
    }

    /**
     * Returns the contenthash associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function contenthash(bytes32 node) virtual external override view returns (bytes memory) {
        return hashes[node];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IContentHashResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "../../dnssec-oracle/RRUtils.sol";
import "./IDNSRecordResolver.sol";
import "./IDNSZoneResolver.sol";

abstract contract DNSResolver is IDNSRecordResolver, IDNSZoneResolver, ResolverBase {
    using RRUtils for *;
    using BytesUtils for bytes;

    // Zone hashes for the domains.
    // A zone hash is an EIP-1577 content hash in binary format that should point to a
    // resource containing a single zonefile.
    // node => contenthash
    mapping(bytes32=>bytes) private zonehashes;

    // Version the mapping for each zone.  This allows users who have lost
    // track of their entries to effectively delete an entire zone by bumping
    // the version number.
    // node => version
    mapping(bytes32=>uint256) private versions;

    // The records themselves.  Stored as binary RRSETs
    // node => version => name => resource => data
    mapping(bytes32=>mapping(uint256=>mapping(bytes32=>mapping(uint16=>bytes)))) private records;

    // Count of number of entries for a given name.  Required for DNS resolvers
    // when resolving wildcards.
    // node => version => name => number of records
    mapping(bytes32=>mapping(uint256=>mapping(bytes32=>uint16))) private nameEntriesCount;

    /**
     * Set one or more DNS records.  Records are supplied in wire-format.
     * Records with the same node/name/resource must be supplied one after the
     * other to ensure the data is updated correctly. For example, if the data
     * was supplied:
     *     a.example.com IN A 1.2.3.4
     *     a.example.com IN A 5.6.7.8
     *     www.example.com IN CNAME a.example.com.
     * then this would store the two A records for a.example.com correctly as a
     * single RRSET, however if the data was supplied:
     *     a.example.com IN A 1.2.3.4
     *     www.example.com IN CNAME a.example.com.
     *     a.example.com IN A 5.6.7.8
     * then this would store the first A record, the CNAME, then the second A
     * record which would overwrite the first.
     *
     * @param node the namehash of the node for which to set the records
     * @param data the DNS wire format records to set
     */
    function setDNSRecords(bytes32 node, bytes calldata data) virtual external authorised(node) {
        uint16 resource = 0;
        uint256 offset = 0;
        bytes memory name;
        bytes memory value;
        bytes32 nameHash;
        // Iterate over the data to add the resource records
        for (RRUtils.RRIterator memory iter = data.iterateRRs(0); !iter.done(); iter.next()) {
            if (resource == 0) {
                resource = iter.dnstype;
                name = iter.name();
                nameHash = keccak256(abi.encodePacked(name));
                value = bytes(iter.rdata());
            } else {
                bytes memory newName = iter.name();
                if (resource != iter.dnstype || !name.equals(newName)) {
                    setDNSRRSet(node, name, resource, data, offset, iter.offset - offset, value.length == 0);
                    resource = iter.dnstype;
                    offset = iter.offset;
                    name = newName;
                    nameHash = keccak256(name);
                    value = bytes(iter.rdata());
                }
            }
        }
        if (name.length > 0) {
            setDNSRRSet(node, name, resource, data, offset, data.length - offset, value.length == 0);
        }
    }

    /**
     * Obtain a DNS record.
     * @param node the namehash of the node for which to fetch the record
     * @param name the keccak-256 hash of the fully-qualified name for which to fetch the record
     * @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types
     * @return the DNS record in wire format if present, otherwise empty
     */
    function dnsRecord(bytes32 node, bytes32 name, uint16 resource) virtual override public view returns (bytes memory) {
        return records[node][versions[node]][name][resource];
    }

    /**
     * Check if a given node has records.
     * @param node the namehash of the node for which to check the records
     * @param name the namehash of the node for which to check the records
     */
    function hasDNSRecords(bytes32 node, bytes32 name) virtual public view returns (bool) {
        return (nameEntriesCount[node][versions[node]][name] != 0);
    }

    /**
     * Clear all information for a DNS zone.
     * @param node the namehash of the node for which to clear the zone
     */
    function clearDNSZone(bytes32 node) virtual public authorised(node) {
        versions[node]++;
        emit DNSZoneCleared(node);
    }

    /**
     * setZonehash sets the hash for the zone.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param hash The zonehash to set
     */
    function setZonehash(bytes32 node, bytes calldata hash) virtual external authorised(node) {
        bytes memory oldhash = zonehashes[node];
        zonehashes[node] = hash;
        emit DNSZonehashChanged(node, oldhash, hash);
    }

    /**
     * zonehash obtains the hash for the zone.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function zonehash(bytes32 node) virtual override external view returns (bytes memory) {
        return zonehashes[node];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IDNSRecordResolver).interfaceId ||
               interfaceID == type(IDNSZoneResolver).interfaceId ||
               super.supportsInterface(interfaceID);
    }

    function setDNSRRSet(
        bytes32 node,
        bytes memory name,
        uint16 resource,
        bytes memory data,
        uint256 offset,
        uint256 size,
        bool deleteRecord) private
    {
        uint256 version = versions[node];
        bytes32 nameHash = keccak256(name);
        bytes memory rrData = data.substring(offset, size);
        if (deleteRecord) {
            if (records[node][version][nameHash][resource].length != 0) {
                nameEntriesCount[node][version][nameHash]--;
            }
            delete(records[node][version][nameHash][resource]);
            emit DNSRecordDeleted(node, name, resource);
        } else {
            if (records[node][version][nameHash][resource].length == 0) {
                nameEntriesCount[node][version][nameHash]++;
            }
            records[node][version][nameHash][resource] = rrData;
            emit DNSRecordChanged(node, name, resource, rrData);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "@openzeppelin/contracts/utils/introspection/IERC165.sol";
import "../ResolverBase.sol";
import "./AddrResolver.sol";
import "./IInterfaceResolver.sol";

abstract contract InterfaceResolver is IInterfaceResolver, AddrResolver {
    mapping(bytes32=>mapping(bytes4=>address)) interfaces;

    /**
     * Sets an interface associated with a name.
     * Setting the address to 0 restores the default behaviour of querying the contract at `addr()` for interface support.
     * @param node The node to update.
     * @param interfaceID The EIP 165 interface ID.
     * @param implementer The address of a contract that implements this interface for this node.
     */
    function setInterface(bytes32 node, bytes4 interfaceID, address implementer) virtual external authorised(node) {
        interfaces[node][interfaceID] = implementer;
        emit InterfaceChanged(node, interfaceID, implementer);
    }

    /**
     * Returns the address of a contract that implements the specified interface for this name.
     * If an implementer has not been set for this interfaceID and name, the resolver will query
     * the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that
     * contract implements EIP165 and returns `true` for the specified interfaceID, its address
     * will be returned.
     * @param node The ENS node to query.
     * @param interfaceID The EIP 165 interface ID to check for.
     * @return The address that implements this interface, or 0 if the interface is unsupported.
     */
    function interfaceImplementer(bytes32 node, bytes4 interfaceID) virtual override external view returns (address) {
        address implementer = interfaces[node][interfaceID];
        if(implementer != address(0)) {
            return implementer;
        }

        address a = addr(node);
        if(a == address(0)) {
            return address(0);
        }

        (bool success, bytes memory returnData) = a.staticcall(abi.encodeWithSignature("supportsInterface(bytes4)", type(IERC165).interfaceId));
        if(!success || returnData.length < 32 || returnData[31] == 0) {
            // EIP 165 not supported by target
            return address(0);
        }

        (success, returnData) = a.staticcall(abi.encodeWithSignature("supportsInterface(bytes4)", interfaceID));
        if(!success || returnData.length < 32 || returnData[31] == 0) {
            // Specified interface not supported by target
            return address(0);
        }

        return a;
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IInterfaceResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./INameResolver.sol";

abstract contract NameResolver is INameResolver, ResolverBase {
    mapping(bytes32=>string) names;

    /**
     * Sets the name associated with an ENS node, for reverse records.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     */
    function setName(bytes32 node, string calldata newName) virtual external authorised(node) {
        names[node] = newName;
        emit NameChanged(node, newName);
    }

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) virtual override external view returns (string memory) {
        return names[node];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(INameResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./IPubkeyResolver.sol";

abstract contract PubkeyResolver is IPubkeyResolver, ResolverBase {
    struct PublicKey {
        bytes32 x;
        bytes32 y;
    }

    mapping(bytes32=>PublicKey) pubkeys;

    /**
     * Sets the SECP256k1 public key associated with an ENS node.
     * @param node The ENS node to query
     * @param x the X coordinate of the curve point for the public key.
     * @param y the Y coordinate of the curve point for the public key.
     */
    function setPubkey(bytes32 node, bytes32 x, bytes32 y) virtual external authorised(node) {
        pubkeys[node] = PublicKey(x, y);
        emit PubkeyChanged(node, x, y);
    }

    /**
     * Returns the SECP256k1 public key associated with an ENS node.
     * Defined in EIP 619.
     * @param node The ENS node to query
     * @return x The X coordinate of the curve point for the public key.
     * @return y The Y coordinate of the curve point for the public key.
     */
    function pubkey(bytes32 node) virtual override external view returns (bytes32 x, bytes32 y) {
        return (pubkeys[node].x, pubkeys[node].y);
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(IPubkeyResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "../ResolverBase.sol";
import "./ITextResolver.sol";

abstract contract TextResolver is ITextResolver, ResolverBase {
    mapping(bytes32=>mapping(string=>string)) texts;

    /**
     * Sets the text data associated with an ENS node and key.
     * May only be called by the owner of that node in the ENS registry.
     * @param node The node to update.
     * @param key The key to set.
     * @param value The text data value to set.
     */
    function setText(bytes32 node, string calldata key, string calldata value) virtual external authorised(node) {
        texts[node][key] = value;
        emit TextChanged(node, key, key);
    }

    /**
     * Returns the text data associated with an ENS node and key.
     * @param node The ENS node to query.
     * @param key The text data key to query.
     * @return The associated text data.
     */
    function text(bytes32 node, string calldata key) virtual override external view returns (string memory) {
        return texts[node][key];
    }

    function supportsInterface(bytes4 interfaceID) virtual override public view returns(bool) {
        return interfaceID == type(ITextResolver).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

import "./IMulticallable.sol";
import "@openzeppelin/contracts/utils/introspection/ERC165.sol";

abstract contract Multicallable is IMulticallable, ERC165 {
    function multicall(bytes[] calldata data) external override returns(bytes[] memory results) {
        results = new bytes[](data.length);
        for(uint i = 0; i < data.length; i++) {
            (bool success, bytes memory result) = address(this).delegatecall(data[i]);
            require(success);
            results[i] = result;
        }
        return results;
    }

    function supportsInterface(bytes4 interfaceID) public override virtual view returns(bool) {
        return interfaceID == type(IMulticallable).interfaceId || super.supportsInterface(interfaceID);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "./IABIResolver.sol";
import "../ResolverBase.sol";

interface IABIResolver {
    event ABIChanged(bytes32 indexed node, uint256 indexed contentType);
    /**
     * Returns the ABI associated with an ENS node.
     * Defined in EIP205.
     * @param node The ENS node to query
     * @param contentTypes A bitwise OR of the ABI formats accepted by the caller.
     * @return contentType The content type of the return value
     * @return data The ABI data
     */
    function ABI(bytes32 node, uint256 contentTypes) external view returns (uint256, bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

import "@openzeppelin/contracts/utils/introspection/ERC165.sol";

abstract contract ResolverBase is ERC165 {
    function isAuthorised(bytes32 node) internal virtual view returns(bool);

    modifier authorised(bytes32 node) {
        require(isAuthorised(node));
        _;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/ERC165.sol)

pragma solidity ^0.8.0;

import "./IERC165.sol";

/**
 * @dev Implementation of the {IERC165} interface.
 *
 * Contracts that want to implement ERC165 should inherit from this contract and override {supportsInterface} to check
 * for the additional interface id that will be supported. For example:
 *
 * ```solidity
 * function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
 *     return interfaceId == type(MyInterface).interfaceId || super.supportsInterface(interfaceId);
 * }
 * ```
 *
 * Alternatively, {ERC165Storage} provides an easier to use but more expensive implementation.
 */
abstract contract ERC165 is IERC165 {
    /**
     * @dev See {IERC165-supportsInterface}.
     */
    function supportsInterface(bytes4 interfaceId) public view virtual override returns (bool) {
        return interfaceId == type(IERC165).interfaceId;
    }
}

// SPDX-License-Identifier: MIT
// OpenZeppelin Contracts v4.4.1 (utils/introspection/IERC165.sol)

pragma solidity ^0.8.0;

/**
 * @dev Interface of the ERC165 standard, as defined in the
 * https://eips.ethereum.org/EIPS/eip-165[EIP].
 *
 * Implementers can declare support of contract interfaces, which can then be
 * queried by others ({ERC165Checker}).
 *
 * For an implementation, see {ERC165}.
 */
interface IERC165 {
    /**
     * @dev Returns true if this contract implements the interface defined by
     * `interfaceId`. See the corresponding
     * https://eips.ethereum.org/EIPS/eip-165#how-interfaces-are-identified[EIP section]
     * to learn more about how these ids are created.
     *
     * This function call must use less than 30 000 gas.
     */
    function supportsInterface(bytes4 interfaceId) external view returns (bool);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the legacy (ETH-only) addr function.
 */
interface IAddrResolver {
    event AddrChanged(bytes32 indexed node, address a);

    /**
     * Returns the address associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated address.
     */
    function addr(bytes32 node) external view returns (address payable);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

/**
 * Interface for the new (multicoin) addr function.
 */
interface IAddressResolver {
    event AddressChanged(bytes32 indexed node, uint coinType, bytes newAddress);

    function addr(bytes32 node, uint coinType) external view returns(bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IContentHashResolver {
    event ContenthashChanged(bytes32 indexed node, bytes hash);

    /**
     * Returns the contenthash associated with an ENS node.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function contenthash(bytes32 node) external view returns (bytes memory);
}

pragma solidity ^0.8.4;

import "./BytesUtils.sol";
import "@ensdomains/buffer/contracts/Buffer.sol";

/**
* @dev RRUtils is a library that provides utilities for parsing DNS resource records.
*/
library RRUtils {
    using BytesUtils for *;
    using Buffer for *;

    /**
    * @dev Returns the number of bytes in the DNS name at 'offset' in 'self'.
    * @param self The byte array to read a name from.
    * @param offset The offset to start reading at.
    * @return The length of the DNS name at 'offset', in bytes.
    */
    function nameLength(bytes memory self, uint offset) internal pure returns(uint) {
        uint idx = offset;
        while (true) {
            assert(idx < self.length);
            uint labelLen = self.readUint8(idx);
            idx += labelLen + 1;
            if (labelLen == 0) {
                break;
            }
        }
        return idx - offset;
    }

    /**
    * @dev Returns a DNS format name at the specified offset of self.
    * @param self The byte array to read a name from.
    * @param offset The offset to start reading at.
    * @return ret The name.
    */
    function readName(bytes memory self, uint offset) internal pure returns(bytes memory ret) {
        uint len = nameLength(self, offset);
        return self.substring(offset, len);
    }

    /**
    * @dev Returns the number of labels in the DNS name at 'offset' in 'self'.
    * @param self The byte array to read a name from.
    * @param offset The offset to start reading at.
    * @return The number of labels in the DNS name at 'offset', in bytes.
    */
    function labelCount(bytes memory self, uint offset) internal pure returns(uint) {
        uint count = 0;
        while (true) {
            assert(offset < self.length);
            uint labelLen = self.readUint8(offset);
            offset += labelLen + 1;
            if (labelLen == 0) {
                break;
            }
            count += 1;
        }
        return count;
    }

    uint constant RRSIG_TYPE = 0;
    uint constant RRSIG_ALGORITHM = 2;
    uint constant RRSIG_LABELS = 3;
    uint constant RRSIG_TTL = 4;
    uint constant RRSIG_EXPIRATION = 8;
    uint constant RRSIG_INCEPTION = 12;
    uint constant RRSIG_KEY_TAG = 16;
    uint constant RRSIG_SIGNER_NAME = 18;

    struct SignedSet {
        uint16 typeCovered;
        uint8 algorithm;
        uint8 labels;
        uint32 ttl;
        uint32 expiration;
        uint32 inception;
        uint16 keytag;
        bytes signerName;
        bytes data;
        bytes name;
    }

    function readSignedSet(bytes memory data) internal pure returns(SignedSet memory self) {
        self.typeCovered = data.readUint16(RRSIG_TYPE);
        self.algorithm = data.readUint8(RRSIG_ALGORITHM);
        self.labels = data.readUint8(RRSIG_LABELS);
        self.ttl = data.readUint32(RRSIG_TTL);
        self.expiration = data.readUint32(RRSIG_EXPIRATION);
        self.inception = data.readUint32(RRSIG_INCEPTION);
        self.keytag = data.readUint16(RRSIG_KEY_TAG);
        self.signerName = readName(data, RRSIG_SIGNER_NAME);
        self.data = data.substring(RRSIG_SIGNER_NAME + self.signerName.length, data.length - RRSIG_SIGNER_NAME - self.signerName.length);
    }

    function rrs(SignedSet memory rrset) internal pure returns(RRIterator memory) {
        return iterateRRs(rrset.data, 0);
    }

    /**
    * @dev An iterator over resource records.
    */
    struct RRIterator {
        bytes data;
        uint offset;
        uint16 dnstype;
        uint16 class;
        uint32 ttl;
        uint rdataOffset;
        uint nextOffset;
    }

    /**
    * @dev Begins iterating over resource records.
    * @param self The byte string to read from.
    * @param offset The offset to start reading at.
    * @return ret An iterator object.
    */
    function iterateRRs(bytes memory self, uint offset) internal pure returns (RRIterator memory ret) {
        ret.data = self;
        ret.nextOffset = offset;
        next(ret);
    }

    /**
    * @dev Returns true iff there are more RRs to iterate.
    * @param iter The iterator to check.
    * @return True iff the iterator has finished.
    */
    function done(RRIterator memory iter) internal pure returns(bool) {
        return iter.offset >= iter.data.length;
    }

    /**
    * @dev Moves the iterator to the next resource record.
    * @param iter The iterator to advance.
    */
    function next(RRIterator memory iter) internal pure {
        iter.offset = iter.nextOffset;
        if (iter.offset >= iter.data.length) {
            return;
        }

        // Skip the name
        uint off = iter.offset + nameLength(iter.data, iter.offset);

        // Read type, class, and ttl
        iter.dnstype = iter.data.readUint16(off);
        off += 2;
        iter.class = iter.data.readUint16(off);
        off += 2;
        iter.ttl = iter.data.readUint32(off);
        off += 4;

        // Read the rdata
        uint rdataLength = iter.data.readUint16(off);
        off += 2;
        iter.rdataOffset = off;
        iter.nextOffset = off + rdataLength;
    }

    /**
    * @dev Returns the name of the current record.
    * @param iter The iterator.
    * @return A new bytes object containing the owner name from the RR.
    */
    function name(RRIterator memory iter) internal pure returns(bytes memory) {
        return iter.data.substring(iter.offset, nameLength(iter.data, iter.offset));
    }

    /**
    * @dev Returns the rdata portion of the current record.
    * @param iter The iterator.
    * @return A new bytes object containing the RR's RDATA.
    */
    function rdata(RRIterator memory iter) internal pure returns(bytes memory) {
        return iter.data.substring(iter.rdataOffset, iter.nextOffset - iter.rdataOffset);
    }

    uint constant DNSKEY_FLAGS = 0;
    uint constant DNSKEY_PROTOCOL = 2;
    uint constant DNSKEY_ALGORITHM = 3;
    uint constant DNSKEY_PUBKEY = 4;

    struct DNSKEY {
        uint16 flags;
        uint8 protocol;
        uint8 algorithm;
        bytes publicKey;
    }

    function readDNSKEY(bytes memory data, uint offset, uint length) internal pure returns(DNSKEY memory self) {
        self.flags = data.readUint16(offset + DNSKEY_FLAGS);
        self.protocol = data.readUint8(offset + DNSKEY_PROTOCOL);
        self.algorithm = data.readUint8(offset + DNSKEY_ALGORITHM);
        self.publicKey = data.substring(offset + DNSKEY_PUBKEY, length - DNSKEY_PUBKEY);
    } 

    uint constant DS_KEY_TAG = 0;
    uint constant DS_ALGORITHM = 2;
    uint constant DS_DIGEST_TYPE = 3;
    uint constant DS_DIGEST = 4;

    struct DS {
        uint16 keytag;
        uint8 algorithm;
        uint8 digestType;
        bytes digest;
    }

    function readDS(bytes memory data, uint offset, uint length) internal pure returns(DS memory self) {
        self.keytag = data.readUint16(offset + DS_KEY_TAG);
        self.algorithm = data.readUint8(offset + DS_ALGORITHM);
        self.digestType = data.readUint8(offset + DS_DIGEST_TYPE);
        self.digest = data.substring(offset + DS_DIGEST, length - DS_DIGEST);
    }

    struct NSEC3 {
        uint8 hashAlgorithm;
        uint8 flags;
        uint16 iterations;
        bytes salt;
        bytes32 nextHashedOwnerName;
        bytes typeBitmap;
    }

    uint constant NSEC3_HASH_ALGORITHM = 0;
    uint constant NSEC3_FLAGS = 1;
    uint constant NSEC3_ITERATIONS = 2;
    uint constant NSEC3_SALT_LENGTH = 4;
    uint constant NSEC3_SALT = 5;

    function readNSEC3(bytes memory data, uint offset, uint length) internal pure returns(NSEC3 memory self) {
        uint end = offset + length;
        self.hashAlgorithm = data.readUint8(offset + NSEC3_HASH_ALGORITHM);
        self.flags = data.readUint8(offset + NSEC3_FLAGS);
        self.iterations = data.readUint16(offset + NSEC3_ITERATIONS);
        uint8 saltLength = data.readUint8(offset + NSEC3_SALT_LENGTH);
        offset = offset + NSEC3_SALT;
        self.salt = data.substring(offset, saltLength);
        offset += saltLength;
        uint8 nextLength = data.readUint8(offset);
        require(nextLength <= 32);
        offset += 1;
        self.nextHashedOwnerName = data.readBytesN(offset, nextLength);
        offset += nextLength;
        self.typeBitmap = data.substring(offset, end - offset);
    }

    function checkTypeBitmap(NSEC3 memory self, uint16 rrtype) internal pure returns(bool) {
        return checkTypeBitmap(self.typeBitmap, 0, rrtype);
    }

    /**
    * @dev Checks if a given RR type exists in a type bitmap.
    * @param bitmap The byte string to read the type bitmap from.
    * @param offset The offset to start reading at.
    * @param rrtype The RR type to check for.
    * @return True if the type is found in the bitmap, false otherwise.
    */
    function checkTypeBitmap(bytes memory bitmap, uint offset, uint16 rrtype) internal pure returns (bool) {
        uint8 typeWindow = uint8(rrtype >> 8);
        uint8 windowByte = uint8((rrtype & 0xff) / 8);
        uint8 windowBitmask = uint8(uint8(1) << (uint8(7) - uint8(rrtype & 0x7)));
        for (uint off = offset; off < bitmap.length;) {
            uint8 window = bitmap.readUint8(off);
            uint8 len = bitmap.readUint8(off + 1);
            if (typeWindow < window) {
                // We've gone past our window; it's not here.
                return false;
            } else if (typeWindow == window) {
                // Check this type bitmap
                if (len <= windowByte) {
                    // Our type is past the end of the bitmap
                    return false;
                }
                return (bitmap.readUint8(off + windowByte + 2) & windowBitmask) != 0;
            } else {
                // Skip this type bitmap
                off += len + 2;
            }
        }

        return false;
    }

    function compareNames(bytes memory self, bytes memory other) internal pure returns (int) {
        if (self.equals(other)) {
            return 0;
        }

        uint off;
        uint otheroff;
        uint prevoff;
        uint otherprevoff;
        uint counts = labelCount(self, 0);
        uint othercounts = labelCount(other, 0);

        // Keep removing labels from the front of the name until both names are equal length
        while (counts > othercounts) {
            prevoff = off;
            off = progress(self, off);
            counts--;
        }

        while (othercounts > counts) {
            otherprevoff = otheroff;
            otheroff = progress(other, otheroff);
            othercounts--;
        }

        // Compare the last nonequal labels to each other
        while (counts > 0 && !self.equals(off, other, otheroff)) {
            prevoff = off;
            off = progress(self, off);
            otherprevoff = otheroff;
            otheroff = progress(other, otheroff);
            counts -= 1;
        }

        if (off == 0) {
            return -1;
        }
        if(otheroff == 0) {
            return 1;
        }

        return self.compare(prevoff + 1, self.readUint8(prevoff), other, otherprevoff + 1, other.readUint8(otherprevoff));
    }

    /**
     * @dev Compares two serial numbers using RFC1982 serial number math.
     */
    function serialNumberGte(uint32 i1, uint32 i2) internal pure returns(bool) {
        return int32(i1) - int32(i2) >= 0;
    }

    function progress(bytes memory body, uint off) internal pure returns(uint) {
        return off + 1 + body.readUint8(off);
    }

    /**
     * @dev Computes the keytag for a chunk of data.
     * @param data The data to compute a keytag for.
     * @return The computed key tag.
     */
    function computeKeytag(bytes memory data) internal pure returns (uint16) {
        /* This function probably deserves some explanation.
         * The DNSSEC keytag function is a checksum that relies on summing up individual bytes
         * from the input string, with some mild bitshifting. Here's a Naive solidity implementation:
         *
         *     function computeKeytag(bytes memory data) internal pure returns (uint16) {
         *         uint ac;
         *         for (uint i = 0; i < data.length; i++) {
         *             ac += i & 1 == 0 ? uint16(data.readUint8(i)) << 8 : data.readUint8(i);
         *         }
         *         return uint16(ac + (ac >> 16));
         *     }
         *
         * The EVM, with its 256 bit words, is exceedingly inefficient at doing byte-by-byte operations;
         * the code above, on reasonable length inputs, consumes over 100k gas. But we can make the EVM's
         * large words work in our favour.
         *
         * The code below works by treating the input as a series of 256 bit words. It first masks out
         * even and odd bytes from each input word, adding them to two separate accumulators `ac1` and `ac2`.
         * The bytes are separated by empty bytes, so as long as no individual sum exceeds 2^16-1, we're
         * effectively summing 16 different numbers with each EVM ADD opcode.
         *
         * Once it's added up all the inputs, it has to add all the 16 bit values in `ac1` and `ac2` together.
         * It does this using the same trick - mask out every other value, shift to align them, add them together.
         * After the first addition on both accumulators, there's enough room to add the two accumulators together,
         * and the remaining sums can be done just on ac1.
         */
        unchecked {
            require(data.length <= 8192, "Long keys not permitted");
            uint ac1;
            uint ac2;
            for(uint i = 0; i < data.length + 31; i += 32) {
                uint word;
                assembly {
                    word := mload(add(add(data, 32), i))
                }
                if(i + 32 > data.length) {
                    uint unused = 256 - (data.length - i) * 8;
                    word = (word >> unused) << unused;
                }
                ac1 += (word & 0xFF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00) >> 8;
                ac2 += (word & 0x00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF00FF);
            }
            ac1 = (ac1 & 0x0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF)
                + ((ac1 & 0xFFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000) >> 16);
            ac2 = (ac2 & 0x0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF)
                + ((ac2 & 0xFFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000FFFF0000) >> 16);
            ac1 = (ac1 << 8) + ac2;
            ac1 = (ac1 & 0x00000000FFFFFFFF00000000FFFFFFFF00000000FFFFFFFF00000000FFFFFFFF)
                + ((ac1 & 0xFFFFFFFF00000000FFFFFFFF00000000FFFFFFFF00000000FFFFFFFF00000000) >> 32);
            ac1 = (ac1 & 0x0000000000000000FFFFFFFFFFFFFFFF0000000000000000FFFFFFFFFFFFFFFF)
                + ((ac1 & 0xFFFFFFFFFFFFFFFF0000000000000000FFFFFFFFFFFFFFFF0000000000000000) >> 64);
            ac1 = (ac1 & 0x00000000000000000000000000000000FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF)
                + (ac1 >> 128);
            ac1 += (ac1 >> 16) & 0xFFFF;
            return uint16(ac1);
        }
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSRecordResolver {
    // DNSRecordChanged is emitted whenever a given node/name/resource's RRSET is updated.
    event DNSRecordChanged(bytes32 indexed node, bytes name, uint16 resource, bytes record);
    // DNSRecordDeleted is emitted whenever a given node/name/resource's RRSET is deleted.
    event DNSRecordDeleted(bytes32 indexed node, bytes name, uint16 resource);
    // DNSZoneCleared is emitted whenever a given node's zone information is cleared.
    event DNSZoneCleared(bytes32 indexed node);

    /**
     * Obtain a DNS record.
     * @param node the namehash of the node for which to fetch the record
     * @param name the keccak-256 hash of the fully-qualified name for which to fetch the record
     * @param resource the ID of the resource as per https://en.wikipedia.org/wiki/List_of_DNS_record_types
     * @return the DNS record in wire format if present, otherwise empty
     */
    function dnsRecord(bytes32 node, bytes32 name, uint16 resource) external view returns (bytes memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IDNSZoneResolver {
    // DNSZonehashChanged is emitted whenever a given node's zone hash is updated.
    event DNSZonehashChanged(bytes32 indexed node, bytes lastzonehash, bytes zonehash);

    /**
     * zonehash obtains the hash for the zone.
     * @param node The ENS node to query.
     * @return The associated contenthash.
     */
    function zonehash(bytes32 node) external view returns (bytes memory);
}

pragma solidity ^0.8.4;

library BytesUtils {
    /*
    * @dev Returns the keccak-256 hash of a byte range.
    * @param self The byte string to hash.
    * @param offset The position to start hashing at.
    * @param len The number of bytes to hash.
    * @return The hash of the byte range.
    */
    function keccak(bytes memory self, uint offset, uint len) internal pure returns (bytes32 ret) {
        require(offset + len <= self.length);
        assembly {
            ret := keccak256(add(add(self, 32), offset), len)
        }
    }


    /*
    * @dev Returns a positive number if `other` comes lexicographically after
    *      `self`, a negative number if it comes before, or zero if the
    *      contents of the two bytes are equal.
    * @param self The first bytes to compare.
    * @param other The second bytes to compare.
    * @return The result of the comparison.
    */
    function compare(bytes memory self, bytes memory other) internal pure returns (int) {
        return compare(self, 0, self.length, other, 0, other.length);
    }

    /*
    * @dev Returns a positive number if `other` comes lexicographically after
    *      `self`, a negative number if it comes before, or zero if the
    *      contents of the two bytes are equal. Comparison is done per-rune,
    *      on unicode codepoints.
    * @param self The first bytes to compare.
    * @param offset The offset of self.
    * @param len    The length of self.
    * @param other The second bytes to compare.
    * @param otheroffset The offset of the other string.
    * @param otherlen    The length of the other string.
    * @return The result of the comparison.
    */
    function compare(bytes memory self, uint offset, uint len, bytes memory other, uint otheroffset, uint otherlen) internal pure returns (int) {
        uint shortest = len;
        if (otherlen < len)
        shortest = otherlen;

        uint selfptr;
        uint otherptr;

        assembly {
            selfptr := add(self, add(offset, 32))
            otherptr := add(other, add(otheroffset, 32))
        }
        for (uint idx = 0; idx < shortest; idx += 32) {
            uint a;
            uint b;
            assembly {
                a := mload(selfptr)
                b := mload(otherptr)
            }
            if (a != b) {
                // Mask out irrelevant bytes and check again
                uint mask;
                if (shortest > 32) {
                    mask = type(uint256).max;
                } else {
                    mask = ~(2 ** (8 * (32 - shortest + idx)) - 1);
                }
                int diff = int(a & mask) - int(b & mask);
                if (diff != 0)
                return diff;
            }
            selfptr += 32;
            otherptr += 32;
        }

        return int(len) - int(otherlen);
    }

    /*
    * @dev Returns true if the two byte ranges are equal.
    * @param self The first byte range to compare.
    * @param offset The offset into the first byte range.
    * @param other The second byte range to compare.
    * @param otherOffset The offset into the second byte range.
    * @param len The number of bytes to compare
    * @return True if the byte ranges are equal, false otherwise.
    */
    function equals(bytes memory self, uint offset, bytes memory other, uint otherOffset, uint len) internal pure returns (bool) {
        return keccak(self, offset, len) == keccak(other, otherOffset, len);
    }

    /*
    * @dev Returns true if the two byte ranges are equal with offsets.
    * @param self The first byte range to compare.
    * @param offset The offset into the first byte range.
    * @param other The second byte range to compare.
    * @param otherOffset The offset into the second byte range.
    * @return True if the byte ranges are equal, false otherwise.
    */
    function equals(bytes memory self, uint offset, bytes memory other, uint otherOffset) internal pure returns (bool) {
        return keccak(self, offset, self.length - offset) == keccak(other, otherOffset, other.length - otherOffset);
    }

    /*
    * @dev Compares a range of 'self' to all of 'other' and returns True iff
    *      they are equal.
    * @param self The first byte range to compare.
    * @param offset The offset into the first byte range.
    * @param other The second byte range to compare.
    * @return True if the byte ranges are equal, false otherwise.
    */
    function equals(bytes memory self, uint offset, bytes memory other) internal pure returns (bool) {
        return self.length >= offset + other.length && equals(self, offset, other, 0, other.length);
    }

    /*
    * @dev Returns true if the two byte ranges are equal.
    * @param self The first byte range to compare.
    * @param other The second byte range to compare.
    * @return True if the byte ranges are equal, false otherwise.
    */
    function equals(bytes memory self, bytes memory other) internal pure returns(bool) {
        return self.length == other.length && equals(self, 0, other, 0, self.length);
    }

    /*
    * @dev Returns the 8-bit number at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes
    * @return The specified 8 bits of the string, interpreted as an integer.
    */
    function readUint8(bytes memory self, uint idx) internal pure returns (uint8 ret) {
        return uint8(self[idx]);
    }

    /*
    * @dev Returns the 16-bit number at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes
    * @return The specified 16 bits of the string, interpreted as an integer.
    */
    function readUint16(bytes memory self, uint idx) internal pure returns (uint16 ret) {
        require(idx + 2 <= self.length);
        assembly {
            ret := and(mload(add(add(self, 2), idx)), 0xFFFF)
        }
    }

    /*
    * @dev Returns the 32-bit number at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes
    * @return The specified 32 bits of the string, interpreted as an integer.
    */
    function readUint32(bytes memory self, uint idx) internal pure returns (uint32 ret) {
        require(idx + 4 <= self.length);
        assembly {
            ret := and(mload(add(add(self, 4), idx)), 0xFFFFFFFF)
        }
    }

    /*
    * @dev Returns the 32 byte value at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes
    * @return The specified 32 bytes of the string.
    */
    function readBytes32(bytes memory self, uint idx) internal pure returns (bytes32 ret) {
        require(idx + 32 <= self.length);
        assembly {
            ret := mload(add(add(self, 32), idx))
        }
    }

    /*
    * @dev Returns the 32 byte value at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes
    * @return The specified 32 bytes of the string.
    */
    function readBytes20(bytes memory self, uint idx) internal pure returns (bytes20 ret) {
        require(idx + 20 <= self.length);
        assembly {
            ret := and(mload(add(add(self, 32), idx)), 0xFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF000000000000000000000000)
        }
    }

    /*
    * @dev Returns the n byte value at the specified index of self.
    * @param self The byte string.
    * @param idx The index into the bytes.
    * @param len The number of bytes.
    * @return The specified 32 bytes of the string.
    */
    function readBytesN(bytes memory self, uint idx, uint len) internal pure returns (bytes32 ret) {
        require(len <= 32);
        require(idx + len <= self.length);
        assembly {
            let mask := not(sub(exp(256, sub(32, len)), 1))
            ret := and(mload(add(add(self, 32), idx)),  mask)
        }
    }

    function memcpy(uint dest, uint src, uint len) private pure {
        // Copy word-length chunks while possible
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }

        // Copy remaining bytes
        unchecked {
            uint mask = (256 ** (32 - len)) - 1;
            assembly {
                let srcpart := and(mload(src), not(mask))
                let destpart := and(mload(dest), mask)
                mstore(dest, or(destpart, srcpart))
            }
        }
    }

    /*
    * @dev Copies a substring into a new byte string.
    * @param self The byte string to copy from.
    * @param offset The offset to start copying at.
    * @param len The number of bytes to copy.
    */
    function substring(bytes memory self, uint offset, uint len) internal pure returns(bytes memory) {
        require(offset + len <= self.length);

        bytes memory ret = new bytes(len);
        uint dest;
        uint src;

        assembly {
            dest := add(ret, 32)
            src := add(add(self, 32), offset)
        }
        memcpy(dest, src, len);

        return ret;
    }

    // Maps characters from 0x30 to 0x7A to their base32 values.
    // 0xFF represents invalid characters in that range.
    bytes constant base32HexTable = hex'00010203040506070809FFFFFFFFFFFFFF0A0B0C0D0E0F101112131415161718191A1B1C1D1E1FFFFFFFFFFFFFFFFFFFFF0A0B0C0D0E0F101112131415161718191A1B1C1D1E1F';

    /**
     * @dev Decodes unpadded base32 data of up to one word in length.
     * @param self The data to decode.
     * @param off Offset into the string to start at.
     * @param len Number of characters to decode.
     * @return The decoded data, left aligned.
     */
    function base32HexDecodeWord(bytes memory self, uint off, uint len) internal pure returns(bytes32) {
        require(len <= 52);

        uint ret = 0;
        uint8 decoded;
        for(uint i = 0; i < len; i++) {
            bytes1 char = self[off + i];
            require(char >= 0x30 && char <= 0x7A);
            decoded = uint8(base32HexTable[uint(uint8(char)) - 0x30]);
            require(decoded <= 0x20);
            if(i == len - 1) {
                break;
            }
            ret = (ret << 5) | decoded;
        }

        uint bitlen = len * 5;
        if(len % 8 == 0) {
            // Multiple of 8 characters, no padding
            ret = (ret << 5) | decoded;
        } else if(len % 8 == 2) {
            // Two extra characters - 1 byte
            ret = (ret << 3) | (decoded >> 2);
            bitlen -= 2;
        } else if(len % 8 == 4) {
            // Four extra characters - 2 bytes
            ret = (ret << 1) | (decoded >> 4);
            bitlen -= 4;
        } else if(len % 8 == 5) {
            // Five extra characters - 3 bytes
            ret = (ret << 4) | (decoded >> 1);
            bitlen -= 1;
        } else if(len % 8 == 7) {
            // Seven extra characters - 4 bytes
            ret = (ret << 2) | (decoded >> 3);
            bitlen -= 3;
        } else {
            revert();
        }

        return bytes32(ret << (256 - bitlen));
    }
}

pragma solidity ^0.8.4;

/**
* @dev A library for working with mutable byte buffers in Solidity.
*
* Byte buffers are mutable and expandable, and provide a variety of primitives
* for writing to them. At any time you can fetch a bytes object containing the
* current contents of the buffer. The bytes object should not be stored between
* operations, as it may change due to resizing of the buffer.
*/
library Buffer {
    /**
    * @dev Represents a mutable buffer. Buffers have a current value (buf) and
    *      a capacity. The capacity may be longer than the current value, in
    *      which case it can be extended without the need to allocate more memory.
    */
    struct buffer {
        bytes buf;
        uint capacity;
    }

    /**
    * @dev Initializes a buffer with an initial capacity.
    * @param buf The buffer to initialize.
    * @param capacity The number of bytes of space to allocate the buffer.
    * @return The buffer, for chaining.
    */
    function init(buffer memory buf, uint capacity) internal pure returns(buffer memory) {
        if (capacity % 32 != 0) {
            capacity += 32 - (capacity % 32);
        }
        // Allocate space for the buffer data
        buf.capacity = capacity;
        assembly {
            let ptr := mload(0x40)
            mstore(buf, ptr)
            mstore(ptr, 0)
            mstore(0x40, add(32, add(ptr, capacity)))
        }
        return buf;
    }

    /**
    * @dev Initializes a new buffer from an existing bytes object.
    *      Changes to the buffer may mutate the original value.
    * @param b The bytes object to initialize the buffer with.
    * @return A new buffer.
    */
    function fromBytes(bytes memory b) internal pure returns(buffer memory) {
        buffer memory buf;
        buf.buf = b;
        buf.capacity = b.length;
        return buf;
    }

    function resize(buffer memory buf, uint capacity) private pure {
        bytes memory oldbuf = buf.buf;
        init(buf, capacity);
        append(buf, oldbuf);
    }

    function max(uint a, uint b) private pure returns(uint) {
        if (a > b) {
            return a;
        }
        return b;
    }

    /**
    * @dev Sets buffer length to 0.
    * @param buf The buffer to truncate.
    * @return The original buffer, for chaining..
    */
    function truncate(buffer memory buf) internal pure returns (buffer memory) {
        assembly {
            let bufptr := mload(buf)
            mstore(bufptr, 0)
        }
        return buf;
    }

    /**
    * @dev Writes a byte string to a buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param off The start offset to write to.
    * @param data The data to append.
    * @param len The number of bytes to copy.
    * @return The original buffer, for chaining.
    */
    function write(buffer memory buf, uint off, bytes memory data, uint len) internal pure returns(buffer memory) {
        require(len <= data.length);

        if (off + len > buf.capacity) {
            resize(buf, max(buf.capacity, len + off) * 2);
        }

        uint dest;
        uint src;
        assembly {
            // Memory address of the buffer data
            let bufptr := mload(buf)
            // Length of existing buffer data
            let buflen := mload(bufptr)
            // Start address = buffer address + offset + sizeof(buffer length)
            dest := add(add(bufptr, 32), off)
            // Update buffer length if we're extending it
            if gt(add(len, off), buflen) {
                mstore(bufptr, add(len, off))
            }
            src := add(data, 32)
        }

        // Copy word-length chunks while possible
        for (; len >= 32; len -= 32) {
            assembly {
                mstore(dest, mload(src))
            }
            dest += 32;
            src += 32;
        }

        // Copy remaining bytes
        unchecked {
            uint mask = (256 ** (32 - len)) - 1;
            assembly {
                let srcpart := and(mload(src), not(mask))
                let destpart := and(mload(dest), mask)
                mstore(dest, or(destpart, srcpart))
            }
        }

        return buf;
    }

    /**
    * @dev Appends a byte string to a buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param data The data to append.
    * @param len The number of bytes to copy.
    * @return The original buffer, for chaining.
    */
    function append(buffer memory buf, bytes memory data, uint len) internal pure returns (buffer memory) {
        return write(buf, buf.buf.length, data, len);
    }

    /**
    * @dev Appends a byte string to a buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param data The data to append.
    * @return The original buffer, for chaining.
    */
    function append(buffer memory buf, bytes memory data) internal pure returns (buffer memory) {
        return write(buf, buf.buf.length, data, data.length);
    }

    /**
    * @dev Writes a byte to the buffer. Resizes if doing so would exceed the
    *      capacity of the buffer.
    * @param buf The buffer to append to.
    * @param off The offset to write the byte at.
    * @param data The data to append.
    * @return The original buffer, for chaining.
    */
    function writeUint8(buffer memory buf, uint off, uint8 data) internal pure returns(buffer memory) {
        if (off >= buf.capacity) {
            resize(buf, buf.capacity * 2);
        }

        assembly {
            // Memory address of the buffer data
            let bufptr := mload(buf)
            // Length of existing buffer data
            let buflen := mload(bufptr)
            // Address = buffer address + sizeof(buffer length) + off
            let dest := add(add(bufptr, off), 32)
            mstore8(dest, data)
            // Update buffer length if we extended it
            if eq(off, buflen) {
                mstore(bufptr, add(buflen, 1))
            }
        }
        return buf;
    }

    /**
    * @dev Appends a byte to the buffer. Resizes if doing so would exceed the
    *      capacity of the buffer.
    * @param buf The buffer to append to.
    * @param data The data to append.
    * @return The original buffer, for chaining.
    */
    function appendUint8(buffer memory buf, uint8 data) internal pure returns(buffer memory) {
        return writeUint8(buf, buf.buf.length, data);
    }

    /**
    * @dev Writes up to 32 bytes to the buffer. Resizes if doing so would
    *      exceed the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param off The offset to write at.
    * @param data The data to append.
    * @param len The number of bytes to write (left-aligned).
    * @return The original buffer, for chaining.
    */
    function write(buffer memory buf, uint off, bytes32 data, uint len) private pure returns(buffer memory) {
        if (len + off > buf.capacity) {
            resize(buf, (len + off) * 2);
        }

        unchecked {
            uint mask = (256 ** len) - 1;
            // Right-align data
            data = data >> (8 * (32 - len));
            assembly {
                // Memory address of the buffer data
                let bufptr := mload(buf)
                // Address = buffer address + sizeof(buffer length) + off + len
                let dest := add(add(bufptr, off), len)
                mstore(dest, or(and(mload(dest), not(mask)), data))
                // Update buffer length if we extended it
                if gt(add(off, len), mload(bufptr)) {
                    mstore(bufptr, add(off, len))
                }
            }
        }
        return buf;
    }

    /**
    * @dev Writes a bytes20 to the buffer. Resizes if doing so would exceed the
    *      capacity of the buffer.
    * @param buf The buffer to append to.
    * @param off The offset to write at.
    * @param data The data to append.
    * @return The original buffer, for chaining.
    */
    function writeBytes20(buffer memory buf, uint off, bytes20 data) internal pure returns (buffer memory) {
        return write(buf, off, bytes32(data), 20);
    }

    /**
    * @dev Appends a bytes20 to the buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param data The data to append.
    * @return The original buffer, for chhaining.
    */
    function appendBytes20(buffer memory buf, bytes20 data) internal pure returns (buffer memory) {
        return write(buf, buf.buf.length, bytes32(data), 20);
    }

    /**
    * @dev Appends a bytes32 to the buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param data The data to append.
    * @return The original buffer, for chaining.
    */
    function appendBytes32(buffer memory buf, bytes32 data) internal pure returns (buffer memory) {
        return write(buf, buf.buf.length, data, 32);
    }

    /**
    * @dev Writes an integer to the buffer. Resizes if doing so would exceed
    *      the capacity of the buffer.
    * @param buf The buffer to append to.
    * @param off The offset to write at.
    * @param data The data to append.
    * @param len The number of bytes to write (right-aligned).
    * @return The original buffer, for chaining.
    */
    function writeInt(buffer memory buf, uint off, uint data, uint len) private pure returns(buffer memory) {
        if (len + off > buf.capacity) {
            resize(buf, (len + off) * 2);
        }

        uint mask = (256 ** len) - 1;
        assembly {
            // Memory address of the buffer data
            let bufptr := mload(buf)
            // Address = buffer address + off + sizeof(buffer length) + len
            let dest := add(add(bufptr, off), len)
            mstore(dest, or(and(mload(dest), not(mask)), data))
            // Update buffer length if we extended it
            if gt(add(off, len), mload(bufptr)) {
                mstore(bufptr, add(off, len))
            }
        }
        return buf;
    }

    /**
     * @dev Appends a byte to the end of the buffer. Resizes if doing so would
     * exceed the capacity of the buffer.
     * @param buf The buffer to append to.
     * @param data The data to append.
     * @return The original buffer.
     */
    function appendInt(buffer memory buf, uint data, uint len) internal pure returns(buffer memory) {
        return writeInt(buf, buf.buf.length, data, len);
    }
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IInterfaceResolver {
    event InterfaceChanged(bytes32 indexed node, bytes4 indexed interfaceID, address implementer);

    /**
     * Returns the address of a contract that implements the specified interface for this name.
     * If an implementer has not been set for this interfaceID and name, the resolver will query
     * the contract at `addr()`. If `addr()` is set, a contract exists at that address, and that
     * contract implements EIP165 and returns `true` for the specified interfaceID, its address
     * will be returned.
     * @param node The ENS node to query.
     * @param interfaceID The EIP 165 interface ID to check for.
     * @return The address that implements this interface, or 0 if the interface is unsupported.
     */
    function interfaceImplementer(bytes32 node, bytes4 interfaceID) external view returns (address);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface INameResolver {
    event NameChanged(bytes32 indexed node, string name);

    /**
     * Returns the name associated with an ENS node, for reverse records.
     * Defined in EIP181.
     * @param node The ENS node to query.
     * @return The associated name.
     */
    function name(bytes32 node) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface IPubkeyResolver {
    event PubkeyChanged(bytes32 indexed node, bytes32 x, bytes32 y);

    /**
     * Returns the SECP256k1 public key associated with an ENS node.
     * Defined in EIP 619.
     * @param node The ENS node to query
     * @return x The X coordinate of the curve point for the public key.
     * @return y The Y coordinate of the curve point for the public key.
     */
    function pubkey(bytes32 node) external view returns (bytes32 x, bytes32 y);
}

// SPDX-License-Identifier: MIT
pragma solidity >=0.8.4;

interface ITextResolver {
    event TextChanged(bytes32 indexed node, string indexed indexedKey, string key);

    /**
     * Returns the text data associated with an ENS node and key.
     * @param node The ENS node to query.
     * @param key The text data key to query.
     * @return The associated text data.
     */
    function text(bytes32 node, string calldata key) external view returns (string memory);
}

// SPDX-License-Identifier: MIT
pragma solidity ^0.8.4;

interface IMulticallable {
    function multicall(bytes[] calldata data) external returns(bytes[] memory results);
}

{
  "optimizer": {
    "enabled": true,
    "runs": 1000
  },
  "outputSelection": {
    "*": {
      "*": [
        "evm.bytecode",
        "evm.deployedBytecode",
        "devdoc",
        "userdoc",
        "metadata",
        "abi"
      ]
    }
  },
  "libraries": {}
}

• No Contract Security Audit Submitted- Submit Audit Here

[{"inputs":[{"internalType":"contract INameWrapper","name":"wrapper","type":"address"}],"stateMutability":"nonpayable","type":"constructor"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"uint256","name":"contentType","type":"uint256"}],"name":"ABIChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"address","name":"a","type":"address"}],"name":"AddrChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"uint256","name":"coinType","type":"uint256"},{"indexed":false,"internalType":"bytes","name":"newAddress","type":"bytes"}],"name":"AddressChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"address","name":"owner","type":"address"},{"indexed":true,"internalType":"address","name":"operator","type":"address"},{"indexed":false,"internalType":"bool","name":"approved","type":"bool"}],"name":"ApprovalForAll","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"hash","type":"bytes"}],"name":"ContenthashChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"},{"indexed":false,"internalType":"bytes","name":"record","type":"bytes"}],"name":"DNSRecordChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"name","type":"bytes"},{"indexed":false,"internalType":"uint16","name":"resource","type":"uint16"}],"name":"DNSRecordDeleted","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"DNSZoneCleared","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes","name":"lastzonehash","type":"bytes"},{"indexed":false,"internalType":"bytes","name":"zonehash","type":"bytes"}],"name":"DNSZonehashChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"bytes4","name":"interfaceID","type":"bytes4"},{"indexed":false,"internalType":"address","name":"implementer","type":"address"}],"name":"InterfaceChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"string","name":"name","type":"string"}],"name":"NameChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"x","type":"bytes32"},{"indexed":false,"internalType":"bytes32","name":"y","type":"bytes32"}],"name":"PubkeyChanged","type":"event"},{"anonymous":false,"inputs":[{"indexed":true,"internalType":"bytes32","name":"node","type":"bytes32"},{"indexed":true,"internalType":"string","name":"indexedKey","type":"string"},{"indexed":false,"internalType":"string","name":"key","type":"string"}],"name":"TextChanged","type":"event"},{"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"uint256","name":"contentTypes","type":"uint256"}],"name":"ABI","outputs":[{"internalType":"uint256","name":"","type":"uint256"},{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"addr","outputs":[{"internalType":"address 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stateMutability":"nonpayable","type":"function"},{"inputs":[{"internalType":"bytes4","name":"interfaceID","type":"bytes4"}],"name":"supportsInterface","outputs":[{"internalType":"bool","name":"","type":"bool"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"},{"internalType":"string","name":"key","type":"string"}],"name":"text","outputs":[{"internalType":"string","name":"","type":"string"}],"stateMutability":"view","type":"function"},{"inputs":[{"internalType":"bytes32","name":"node","type":"bytes32"}],"name":"zonehash","outputs":[{"internalType":"bytes","name":"","type":"bytes"}],"stateMutability":"view","type":"function"}]

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000000000000000000000000d0c1411f038db980f6c268d3cc0ef8d32127ad52

-----Decoded View---------------
Arg [0] : wrapper (address): 0xD0C1411F038Db980f6C268D3Cc0ef8D32127ad52

-----Encoded View---------------
1 Constructor Arguments found :
Arg [0] : 000000000000000000000000d0c1411f038db980f6c268d3cc0ef8d32127ad52