100 lines
3.0 KiB
Solidity
100 lines
3.0 KiB
Solidity
pragma solidity ^0.4.18;
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import './ENS.sol';
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/**
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* The ENS registry contract.
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*/
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contract ENSRegistry is ENS {
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struct Record {
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address owner;
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address resolver;
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uint64 ttl;
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}
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mapping (bytes32 => Record) records;
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// Permits modifications only by the owner of the specified node.
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modifier only_owner(bytes32 node, address owner) {
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require(records[node].owner == 0 || records[node].owner == msg.sender || records[node].owner == owner);
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_;
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}
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/**
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* @dev Constructs a new ENS registrar.
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*/
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constructor() public {
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records[0x0].owner = msg.sender;
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}
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/**
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* @dev Transfers ownership of a node to a new address. May only be called by the current owner of the node.
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* @param node The node to transfer ownership of.
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* @param owner The address of the new owner.
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*/
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function setOwner(bytes32 node, address owner) public only_owner(node, owner) {
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emit Transfer(node, owner);
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records[node].owner = owner;
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}
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/**
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* @dev Transfers ownership of a subnode sha3(node, label) to a new address. May only be called by the owner of the parent node.
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* @param node The parent node.
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* @param label The hash of the label specifying the subnode.
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* @param owner The address of the new owner.
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*/
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function setSubnodeOwner(bytes32 node, bytes32 label, address owner) public only_owner(node, owner) {
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bytes32 subnode = keccak256(abi.encodePacked(node, label));
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emit NewOwner(node, label, owner);
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records[subnode].owner = owner;
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}
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/**
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* @dev Sets the resolver address for the specified node.
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* @param node The node to update.
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* @param resolver The address of the resolver.
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*/
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function setResolver(bytes32 node, address resolver) public only_owner(node, 0x0) {
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emit NewResolver(node, resolver);
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records[node].resolver = resolver;
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}
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/**
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* @dev Sets the TTL for the specified node.
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* @param node The node to update.
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* @param ttl The TTL in seconds.
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*/
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function setTTL(bytes32 node, uint64 ttl) public only_owner(node, 0x0) {
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emit NewTTL(node, ttl);
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records[node].ttl = ttl;
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}
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/**
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* @dev Returns the address that owns the specified node.
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* @param node The specified node.
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* @return address of the owner.
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*/
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function owner(bytes32 node) public view returns (address) {
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return records[node].owner;
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}
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/**
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* @dev Returns the address of the resolver for the specified node.
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* @param node The specified node.
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* @return address of the resolver.
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*/
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function resolver(bytes32 node) public view returns (address) {
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return records[node].resolver;
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}
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/**
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* @dev Returns the TTL of a node, and any records associated with it.
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* @param node The specified node.
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* @return ttl of the node.
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*/
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function ttl(bytes32 node) public view returns (uint64) {
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return records[node].ttl;
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}
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}
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