registrar.sol

contract Registrar is Owned {
  ENS public ens;
  mapping(address=>boolean) public controllers;

  constructor(ENS _ens) public {
    ens = _ens;
    setController(msg.sender, true);
  }

  function setController(address controller, boolean isController) ownerOnly {
    controllers[controller] = isController;
  }
  
  modifier controllerOnly {
    require(controllers[msg.sender]);
    _;
  }
  
  function setSubnodeOwner(bytes32 node, bytes32 label, address owner) controllerOnly {
    require(ens.owner(keccak256(abi.encodePacked(node, label))) == address(0));
    ens.setSubnodeOwner(node, label, owner);
  }
  
  function setResolver(bytes32 node, address resolver) controllerOnly {
    ens.setResolver(node, resolver);
  }
  
  function setTTL(bytes32 node, uint ttl) controllerOnly {
    ens.setTTL(node, ttl);
  }
  
  function setOwner(bytes32 node, address owner) controllerOnly {
    ens.setOwner(node, owner);
  }
}