CardDavBackEnd requires principalBackend on ctor

apps/dav/appinfo/register_command.php

@@ -5,6 +5,8 @@ use OCA\DAV\Command\CreateCalendar;
 
 $dbConnection = \OC::$server->getDatabaseConnection();
 $userManager = OC::$server->getUserManager();
+$config = \OC::$server->getConfig();
+
 /** @var Symfony\Component\Console\Application $application */
-$application->add(new CreateAddressBook($userManager, $dbConnection));
+$application->add(new CreateAddressBook($userManager, $dbConnection, $config));
 $application->add(new CreateCalendar($userManager, $dbConnection));

apps/dav/command/createaddressbook.php

@@ -3,6 +3,8 @@
 namespace OCA\DAV\Command;
 
 use OCA\DAV\CardDAV\CardDavBackend;
+use OCA\DAV\Connector\Sabre\Principal;
+use OCP\IConfig;
 use OCP\IDBConnection;
 use OCP\IUserManager;
 use Symfony\Component\Console\Command\Command;
@@ -18,14 +20,18 @@ class CreateAddressBook extends Command {
 	/** @var \OCP\IDBConnection */
 	protected $dbConnection;
 
+	/** @var IConfig */
+	private $config;
+
 	/**
 	 * @param IUserManager $userManager
 	 * @param IDBConnection $dbConnection
 	 */
-	function __construct(IUserManager $userManager, IDBConnection $dbConnection) {
+	function __construct(IUserManager $userManager, IDBConnection $dbConnection, IConfig $config) {
 		parent::__construct();
 		$this->userManager = $userManager;
 		$this->dbConnection = $dbConnection;
+		$this->config = $config;
 	}
 
 	protected function configure() {
@@ -45,8 +51,13 @@ class CreateAddressBook extends Command {
 		if (!$this->userManager->userExists($user)) {
 			throw new \InvalidArgumentException("User <$user> in unknown.");
 		}
+		$principalBackend = new Principal(
+				$this->config,
+				$this->userManager
+		);
+
 		$name = $input->getArgument('name');
-		$carddav = new CardDavBackend($this->dbConnection);
+		$carddav = new CardDavBackend($this->dbConnection, $principalBackend);
 		$carddav->createAddressBook("principals/$user", $name, []);
 	}
 }