Merge pull request #20696 from owncloud/add-carddav-backends-to-ocp-contactsmanager

Add carddav backend to OCP\ContactsManager
2015-12-17 16:36:48 +01:00 · 2015-12-17 16:36:48 +01:00 · 792b270f22
parent 3818a055b9 3ce845e2b1
commit 792b270f22
9 changed files with 1184 additions and 21 deletions
--- a/apps/dav/appinfo/app.php
+++ b/apps/dav/appinfo/app.php
@ -0,0 +1,42 @@
+<?php
+/**
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+$cm = \OC::$server->getContactsManager();
+$cm->register(function() use ($cm) {
+	$db = \OC::$server->getDatabaseConnection();
+	$userId = \OC::$server->getUserSession()->getUser()->getUID();
+	$principal = new \OCA\DAV\Connector\Sabre\Principal(
+			\OC::$server->getConfig(),
+			\OC::$server->getUserManager()
+	);
+	$cardDav = new \OCA\DAV\CardDAV\CardDavBackend($db, $principal, \OC::$server->getLogger());
+	$addressBooks = $cardDav->getAddressBooksForUser("principals/$userId");
+	foreach ($addressBooks as $addressBookInfo)  {
+		$addressBook = new \OCA\DAV\CardDAV\AddressBook($cardDav, $addressBookInfo);
+		$cm->registerAddressBook(
+				new OCA\DAV\CardDAV\AddressBookImpl(
+						$addressBook,
+						$addressBookInfo,
+						$cardDav
+				)
+		);
+	}
+});
--- a/apps/dav/appinfo/database.xml
+++ b/apps/dav/appinfo/database.xml
@ -571,6 +571,78 @@ CREATE TABLE calendarobjects (
 		</declaration>
 	</table>

+	<table>
+		<name>*dbprefix*cards_properties</name>
+		<declaration>
+			<field>
+				<name>id</name>
+				<type>integer</type>
+				<default>0</default>
+				<notnull>true</notnull>
+				<autoincrement>1</autoincrement>
+				<unsigned>true</unsigned>
+				<length>11</length>
+			</field>
+			<field>
+				<name>addressbookid</name>
+				<type>integer</type>
+				<default></default>
+				<notnull>true</notnull>
+				<length>11</length>
+			</field>
+			<field>
+				<name>cardid</name>
+				<type>integer</type>
+				<default></default>
+				<notnull>true</notnull>
+				<unsigned>true</unsigned>
+				<length>11</length>
+			</field>
+			<field>
+				<name>name</name>
+				<type>text</type>
+				<default></default>
+				<notnull>false</notnull>
+				<length>64</length>
+			</field>
+			<field>
+				<name>value</name>
+				<type>text</type>
+				<default></default>
+				<notnull>false</notnull>
+				<length>255</length>
+			</field>
+			<field>
+				<name>preferred</name>
+				<type>integer</type>
+				<default>1</default>
+				<notnull>true</notnull>
+				<length>4</length>
+			</field>
+			<index>
+				<name>card_contactid_index</name>
+				<field>
+					<name>cardid</name>
+					<sorting>ascending</sorting>
+				</field>
+			</index>
+			<index>
+				<name>card_name_index</name>
+				<field>
+					<name>name</name>
+					<sorting>ascending</sorting>
+				</field>
+			</index>
+			<index>
+				<name>card_value_index</name>
+				<field>
+					<name>value</name>
+					<sorting>ascending</sorting>
+				</field>
+			</index>
+		</declaration>
+	</table>
+
 	<table>
 		<name>*dbprefix*dav_shares</name>
 		<declaration>
--- a/apps/dav/appinfo/register_command.php
+++ b/apps/dav/appinfo/register_command.php
@ -8,8 +8,9 @@ $config = \OC::$server->getConfig();
 $dbConnection = \OC::$server->getDatabaseConnection();
 $userManager = OC::$server->getUserManager();
 $config = \OC::$server->getConfig();
+$logger = \OC::$server->getLogger();

 /** @var Symfony\Component\Console\Application $application */
-$application->add(new CreateAddressBook($userManager, $dbConnection, $config));
+$application->add(new CreateAddressBook($userManager, $dbConnection, $config, $logger));
 $application->add(new CreateCalendar($userManager, $dbConnection));
 $application->add(new SyncSystemAddressBook($userManager, $dbConnection, $config));
--- a/apps/dav/command/createaddressbook.php
+++ b/apps/dav/command/createaddressbook.php
@ -6,6 +6,7 @@ use OCA\DAV\CardDAV\CardDavBackend;
 use OCA\DAV\Connector\Sabre\Principal;
 use OCP\IConfig;
 use OCP\IDBConnection;
+use OCP\ILogger;
 use OCP\IUserManager;
 use Symfony\Component\Console\Command\Command;
 use Symfony\Component\Console\Input\InputArgument;
@ -23,15 +24,25 @@ class CreateAddressBook extends Command {
 	/** @var IConfig */
 	private $config;

+	/** @var ILogger  */
+	private $logger;
+
 	/**
 	 * @param IUserManager $userManager
 	 * @param IDBConnection $dbConnection
+	 * @param IConfig $config
+	 * @param ILogger $logger
 	 */
-	function __construct(IUserManager $userManager, IDBConnection $dbConnection, IConfig $config) {
+	function __construct(IUserManager $userManager,
+						 IDBConnection $dbConnection,
+						 IConfig $config,
+						 ILogger $logger
+	) {
 		parent::__construct();
 		$this->userManager = $userManager;
 		$this->dbConnection = $dbConnection;
 		$this->config = $config;
+		$this->logger = $logger;
 	}

 	protected function configure() {
--- a/apps/dav/lib/carddav/addressbookimpl.php
+++ b/apps/dav/lib/carddav/addressbookimpl.php
@ -0,0 +1,219 @@
+<?php
+/**
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Björn Schießle <schiessle@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+namespace OCA\DAV\CardDAV;
+
+use OCP\Constants;
+use OCP\IAddressBook;
+use Sabre\VObject\Component\VCard;
+use Sabre\VObject\Property\Text;
+use Sabre\VObject\Reader;
+use Sabre\VObject\UUIDUtil;
+
+class AddressBookImpl implements IAddressBook {
+
+	/** @var CardDavBackend */
+	private $backend;
+
+	/** @var array */
+	private $addressBookInfo;
+
+	/** @var AddressBook */
+	private $addressBook;
+
+	/**
+	 * AddressBookImpl constructor.
+	 *
+	 * @param AddressBook $addressBook
+	 * @param array $addressBookInfo
+	 * @param CardDavBackend $backend
+	 */
+	public function __construct(
+			AddressBook $addressBook,
+			array $addressBookInfo,
+			CardDavBackend $backend) {
+
+		$this->addressBook = $addressBook;
+		$this->addressBookInfo = $addressBookInfo;
+		$this->backend = $backend;
+	}
+
+	/**
+	 * @return string defining the technical unique key
+	 * @since 5.0.0
+	 */
+	public function getKey() {
+		return $this->addressBookInfo['id'];
+	}
+
+	/**
+	 * In comparison to getKey() this function returns a human readable (maybe translated) name
+	 *
+	 * @return mixed
+	 * @since 5.0.0
+	 */
+	public function getDisplayName() {
+		return $this->addressBookInfo['{DAV:}displayname'];
+	}
+
+	/**
+	 * @param string $pattern which should match within the $searchProperties
+	 * @param array $searchProperties defines the properties within the query pattern should match
+	 * @param array $options - for future use. One should always have options!
+	 * @return array an array of contacts which are arrays of key-value-pairs
+	 * @since 5.0.0
+	 */
+	public function search($pattern, $searchProperties, $options) {
+		$result = $this->backend->search($this->getKey(), $pattern, $searchProperties);
+
+		$vCards = [];
+		foreach ($result as $cardData) {
+			$vCards[] = $this->vCard2Array($this->readCard($cardData));
+		}
+
+		return $vCards;
+	}
+
+	/**
+	 * @param array $properties this array if key-value-pairs defines a contact
+	 * @return array an array representing the contact just created or updated
+	 * @since 5.0.0
+	 */
+	public function createOrUpdate($properties) {
+		$update = false;
+		if (!isset($properties['UID'])) { // create a new contact
+			$uid = $this->createUid();
+			$uri = $uid . '.vcf';
+			$vCard = $this->createEmptyVCard($uid);
+		} else { // update existing contact
+			$uid = $properties['UID'];
+			$uri = $uid . '.vcf';
+			$vCardData = $this->backend->getCard($this->getKey(), $uri);
+			$vCard = $this->readCard($vCardData['carddata']);
+			$update = true;
+		}
+
+		foreach ($properties as $key => $value) {
+			$vCard->$key = $vCard->createProperty($key, $value);
+		}
+
+		if ($update) {
+			$this->backend->updateCard($this->getKey(), $uri, $vCard->serialize());
+		} else {
+			$this->backend->createCard($this->getKey(), $uri, $vCard->serialize());
+		}
+
+		return $this->vCard2Array($vCard);
+
+	}
+
+	/**
+	 * @return mixed
+	 * @since 5.0.0
+	 */
+	public function getPermissions() {
+		$permissions = $this->addressBook->getACL();
+		$result = 0;
+		foreach ($permissions as $permission) {
+			switch($permission['privilege']) {
+				case '{DAV:}read':
+					$result |= Constants::PERMISSION_READ;
+					break;
+				case '{DAV:}write':
+					$result |= Constants::PERMISSION_CREATE;
+					$result |= Constants::PERMISSION_UPDATE;
+					break;
+				case '{DAV:}all':
+					$result |= Constants::PERMISSION_ALL;
+					break;
+			}
+		}
+
+		return $result;
+	}
+
+	/**
+	 * @param object $id the unique identifier to a contact
+	 * @return bool successful or not
+	 * @since 5.0.0
+	 */
+	public function delete($id) {
+		$uri = $this->backend->getCardUri($id);
+		return $this->backend->deleteCard($this->addressBookInfo['id'], $uri);
+	}
+
+	/**
+	 * read vCard data into a vCard object
+	 *
+	 * @param string $cardData
+	 * @return VCard
+	 */
+	protected function readCard($cardData) {
+		return  Reader::read($cardData);
+	}
+
+	/**
+	 * create UID for contact
+	 *
+	 * @return string
+	 */
+	protected function createUid() {
+		do {
+			$uid = $this->getUid();
+		} while (!empty($this->backend->getContact($uid . '.vcf')));
+
+		return $uid;
+	}
+
+	/**
+	 * getUid is only there for testing, use createUid instead
+	 */
+	protected function getUid() {
+		return UUIDUtil::getUUID();
+	}
+
+	/**
+	 * create empty vcard
+	 *
+	 * @param string $uid
+	 * @return VCard
+	 */
+	protected function createEmptyVCard($uid) {
+		$vCard = new VCard();
+		$vCard->add(new Text($vCard, 'UID', $uid));
+		return $vCard;
+	}
+
+	/**
+	 * create array with all vCard properties
+	 *
+	 * @param VCard $vCard
+	 * @return array
+	 */
+	protected function vCard2Array(VCard $vCard) {
+		$result = [];
+		foreach ($vCard->children as $property) {
+			$result[$property->name] = $property->getValue();
+		}
+		return $result;
+	}
+}
--- a/apps/dav/lib/carddav/carddavbackend.php
+++ b/apps/dav/lib/carddav/carddavbackend.php
@ -23,19 +23,48 @@
 namespace OCA\DAV\CardDAV;

 use OCA\DAV\Connector\Sabre\Principal;
+use OCP\IDBConnection;
+use OCP\ILogger;
 use Sabre\CardDAV\Backend\BackendInterface;
 use Sabre\CardDAV\Backend\SyncSupport;
 use Sabre\CardDAV\Plugin;
 use Sabre\DAV\Exception\BadRequest;
+use Sabre\VObject\Component\VCard;
+use Sabre\VObject\Reader;

 class CardDavBackend implements BackendInterface, SyncSupport {

 	/** @var Principal */
 	private $principalBackend;

-	public function __construct(\OCP\IDBConnection $db, Principal $principalBackend) {
+	/** @var ILogger */
+	private $logger;
+
+	/** @var string */
+	private $dbCardsTable = 'cards';
+
+	/** @var string */
+	private $dbCardsPropertiesTable = 'cards_properties';
+
+	/** @var IDBConnection */
+	private $db;
+
+	/** @var array properties to index */
+	public static $indexProperties = array(
+			'BDAY', 'UID', 'N', 'FN', 'TITLE', 'ROLE', 'NOTE', 'NICKNAME',
+			'ORG', 'CATEGORIES', 'EMAIL', 'TEL', 'IMPP', 'ADR', 'URL', 'GEO', 'CLOUD');
+
+	/**
+	 * CardDavBackend constructor.
+	 *
+	 * @param IDBConnection $db
+	 * @param Principal $principalBackend
+	 * @param ILogger $logger
+	 */
+	public function __construct(IDBConnection $db, Principal $principalBackend, ILogger $logger) {
 		$this->db = $db;
 		$this->principalBackend = $principalBackend;
+		$this->logger = $logger;
 	}

 	/**
@ -263,6 +292,11 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 			->where($query->expr()->eq('resourceid', $query->createNamedParameter($addressBookId)))
 			->andWhere($query->expr()->eq('type', $query->createNamedParameter('addressbook')))
 			->execute();
+
+		$query->delete($this->dbCardsPropertiesTable)
+			->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
+			->execute();
+
 	}

 	/**
@ -398,7 +432,7 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 		$query = $this->db->getQueryBuilder();
 		$query->insert('cards')
 			->values([
-				'carddata' => $query->createNamedParameter($cardData),
+				'carddata' => $query->createNamedParameter($cardData, \PDO::PARAM_LOB),
 				'uri' => $query->createNamedParameter($cardUri),
 				'lastmodified' => $query->createNamedParameter(time()),
 				'addressbookid' => $query->createNamedParameter($addressBookId),
@ -408,6 +442,7 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 			->execute();

 		$this->addChange($addressBookId, $cardUri, 1);
+		$this->updateProperties($addressBookId, $cardUri, $cardData);

 		return '"' . $etag . '"';
 	}
@ -451,6 +486,7 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 			->execute();

 		$this->addChange($addressBookId, $cardUri, 2);
+		$this->updateProperties($addressBookId, $cardUri, $cardData);

 		return '"' . $etag . '"';
 	}
@ -463,6 +499,7 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 	 * @return bool
 	 */
 	function deleteCard($addressBookId, $cardUri) {
+		$cardId = $this->getCardId($cardUri);
 		$query = $this->db->getQueryBuilder();
 		$ret = $query->delete('cards')
 			->where($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)))
@ -471,7 +508,12 @@ class CardDavBackend implements BackendInterface, SyncSupport {

 		$this->addChange($addressBookId, $cardUri, 3);

-		return $ret === 1;
+		if ($ret === 1) {
+			$this->purgeProperties($addressBookId, $cardId);
+			return true;
+		}
+
+		return false;
 	}

 	/**
@ -637,6 +679,87 @@ class CardDavBackend implements BackendInterface, SyncSupport {
 		}
 	}

+	/**
+	 * search contact
+	 *
+	 * @param int $addressBookId
+	 * @param string $pattern which should match within the $searchProperties
+	 * @param array $searchProperties defines the properties within the query pattern should match
+	 * @return array an array of contacts which are arrays of key-value-pairs
+	 */
+	public function search($addressBookId, $pattern, $searchProperties) {
+		$query = $this->db->getQueryBuilder();
+		$query2 = $this->db->getQueryBuilder();
+		$query2->selectDistinct('cp.cardid')->from($this->dbCardsPropertiesTable, 'cp');
+		foreach ($searchProperties as $property) {
+			$query2->orWhere(
+				$query2->expr()->andX(
+					$query2->expr()->eq('cp.name', $query->createNamedParameter($property)),
+					$query2->expr()->like('cp.value', $query->createNamedParameter('%' . $this->db->escapeLikeParameter($pattern) . '%'))
+				)
+			);
+		}
+		$query2->andWhere($query2->expr()->eq('cp.addressbookid', $query->createNamedParameter($addressBookId)));
+
+		$query->select('c.carddata')->from($this->dbCardsTable, 'c')
+			->where($query->expr()->in('c.id', $query->createFunction($query2->getSQL())));
+
+		$result = $query->execute();
+		$cards = $result->fetchAll();
+
+		$result->closeCursor();
+
+		return array_map(function($array) {return $this->readBlob($array['carddata']);}, $cards);
+
+	}
+
+	/**
+	 * get URI from a given contact
+	 *
+	 * @param int $id
+	 * @return string
+	 */
+	public function getCardUri($id) {
+		$query = $this->db->getQueryBuilder();
+		$query->select('uri')->from($this->dbCardsTable)
+				->where($query->expr()->eq('id', $query->createParameter('id')))
+				->setParameter('id', $id);
+
+		$result = $query->execute();
+		$uri = $result->fetch();
+		$result->closeCursor();
+
+		if (!isset($uri['uri'])) {
+			throw new \InvalidArgumentException('Card does not exists: ' . $id);
+		}
+
+		return $uri['uri'];
+	}
+
+	/**
+	 * return contact with the given URI
+	 *
+	 * @param string $uri
+	 * @returns array
+	 */
+	public function getContact($uri) {
+		$result = [];
+		$query = $this->db->getQueryBuilder();
+		$query->select('*')->from($this->dbCardsTable)
+				->where($query->expr()->eq('uri', $query->createParameter('uri')))
+				->setParameter('uri', $uri);
+		$queryResult = $query->execute();
+		$contact = $queryResult->fetch();
+		$queryResult->closeCursor();
+
+		if (is_array($contact)) {
+			$result = $contact;
+		}
+
+		return $result;
+	}
+
+
 	/**
 	 * @param string $addressBookUri
 	 * @param string $element
@ -734,4 +857,93 @@ class CardDavBackend implements BackendInterface, SyncSupport {

 		return $shares;
 	}
+
+	/**
+	 * update properties table
+	 *
+	 * @param int $addressBookId
+	 * @param string $cardUri
+	 * @param string $vCardSerialized
+	 */
+	protected function updateProperties($addressBookId, $cardUri, $vCardSerialized) {
+		$cardId = $this->getCardId($cardUri);
+		$vCard = $this->readCard($vCardSerialized);
+
+		$this->purgeProperties($addressBookId, $cardId);
+
+		$query = $this->db->getQueryBuilder();
+		$query->insert($this->dbCardsPropertiesTable)
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter($addressBookId),
+					'cardid' => $query->createNamedParameter($cardId),
+					'name' => $query->createParameter('name'),
+					'value' => $query->createParameter('value'),
+					'preferred' => $query->createParameter('preferred')
+				]
+			);
+
+		foreach ($vCard->children as $property) {
+			if(!in_array($property->name, self::$indexProperties)) {
+				continue;
+			}
+			$preferred = 0;
+			foreach($property->parameters as $parameter) {
+				if ($parameter->name == 'TYPE' && strtoupper($parameter->getValue()) == 'PREF') {
+					$preferred = 1;
+					break;
+				}
+			}
+			$query->setParameter('name', $property->name);
+			$query->setParameter('value', substr($property->getValue(), 0, 254));
+			$query->setParameter('preferred', $preferred);
+			$query->execute();
+		}
+	}
+
+	/**
+	 * read vCard data into a vCard object
+	 *
+	 * @param string $cardData
+	 * @return VCard
+	 */
+	protected function readCard($cardData) {
+		return  Reader::read($cardData);
+	}
+
+	/**
+	 * delete all properties from a given card
+	 *
+	 * @param int $addressBookId
+	 * @param int $cardId
+	 */
+	protected function purgeProperties($addressBookId, $cardId) {
+		$query = $this->db->getQueryBuilder();
+		$query->delete($this->dbCardsPropertiesTable)
+			->where($query->expr()->eq('cardid', $query->createNamedParameter($cardId)))
+			->andWhere($query->expr()->eq('addressbookid', $query->createNamedParameter($addressBookId)));
+		$query->execute();
+	}
+
+	/**
+	 * get ID from a given contact
+	 *
+	 * @param string $uri
+	 * @return int
+	 */
+	protected function getCardId($uri) {
+		$query = $this->db->getQueryBuilder();
+		$query->select('id')->from($this->dbCardsTable)
+			->where($query->expr()->eq('uri', $query->createNamedParameter($uri)));
+
+		$result = $query->execute();
+		$cardIds = $result->fetch();
+		$result->closeCursor();
+
+		if (!isset($cardIds['id'])) {
+			throw new \InvalidArgumentException('Card does not exists: ' . $uri);
+		}
+
+		return (int)$cardIds['id'];
+	}
 }
--- a/apps/dav/lib/rootcollection.php
+++ b/apps/dav/lib/rootcollection.php
@ -41,11 +41,11 @@ class RootCollection extends SimpleCollection {
 			\OC::$server->getSystemTagObjectMapper()
 		);

-		$usersCardDavBackend = new CardDavBackend($db, $principalBackend);
+		$usersCardDavBackend = new CardDavBackend($db, $principalBackend, \OC::$server->getLogger());
 		$usersAddressBookRoot = new AddressBookRoot($principalBackend, $usersCardDavBackend, 'principals/users');
 		$usersAddressBookRoot->disableListing = $disableListing;

-		$systemCardDavBackend = new CardDavBackend($db, $principalBackend);
+		$systemCardDavBackend = new CardDavBackend($db, $principalBackend, \OC::$server->getLogger());
 		$systemAddressBookRoot = new AddressBookRoot(new SystemPrincipalBackend(), $systemCardDavBackend, 'principals/system');
 		$systemAddressBookRoot->disableListing = $disableListing;

--- a/apps/dav/tests/unit/carddav/addressbookimpltest.php
+++ b/apps/dav/tests/unit/carddav/addressbookimpltest.php
@ -0,0 +1,287 @@
+<?php
+/**
+ * @author Björn Schießle <schiessle@owncloud.com>
+ *
+ * @copyright Copyright (c) 2015, ownCloud, Inc.
+ * @license AGPL-3.0
+ *
+ * This code is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU Affero General Public License, version 3,
+ * as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU Affero General Public License for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public License, version 3,
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>
+ *
+ */
+
+
+namespace OCA\DAV\Tests\Unit\CardDAV;
+
+
+use OCA\DAV\CardDAV\AddressBook;
+use OCA\DAV\CardDAV\AddressBookImpl;
+use OCA\DAV\CardDAV\CardDavBackend;
+use Sabre\VObject\Component\VCard;
+use Sabre\VObject\Property\Text;
+use Test\TestCase;
+
+class AddressBookImplTest extends TestCase {
+
+	/** @var AddressBookImpl  */
+	private $addressBookImpl;
+
+	/** @var  array */
+	private $addressBookInfo;
+
+	/** @var  AddressBook | \PHPUnit_Framework_MockObject_MockObject */
+	private $addressBook;
+
+	/** @var  CardDavBackend | \PHPUnit_Framework_MockObject_MockObject */
+	private $backend;
+
+	/** @var  VCard | \PHPUnit_Framework_MockObject_MockObject */
+	private $vCard;
+
+	public function setUp() {
+		parent::setUp();
+
+		$this->addressBookInfo = [
+			'id' => 42,
+			'{DAV:}displayname' => 'display name'
+		];
+		$this->addressBook = $this->getMockBuilder('OCA\DAV\CardDAV\AddressBook')
+			->disableOriginalConstructor()->getMock();
+		$this->backend = $this->getMockBuilder('\OCA\DAV\CardDAV\CardDavBackend')
+			->disableOriginalConstructor()->getMock();
+		$this->vCard = $this->getMock('Sabre\VObject\Component\VCard');
+
+		$this->addressBookImpl = new AddressBookImpl(
+			$this->addressBook,
+			$this->addressBookInfo,
+			$this->backend
+		);
+	}
+
+	public function testGetKey() {
+		$this->assertSame($this->addressBookInfo['id'],
+			$this->addressBookImpl->getKey());
+	}
+
+	public function testGetDisplayName() {
+		$this->assertSame($this->addressBookInfo['{DAV:}displayname'],
+			$this->addressBookImpl->getDisplayName());
+	}
+
+	public function testSearch() {
+
+		/** @var \PHPUnit_Framework_MockObject_MockObject | AddressBookImpl $addressBookImpl */
+		$addressBookImpl = $this->getMockBuilder('OCA\DAV\CardDAV\AddressBookImpl')
+			->setConstructorArgs(
+				[
+					$this->addressBook,
+					$this->addressBookInfo,
+					$this->backend
+				]
+			)
+			->setMethods(['vCard2Array', 'readCard'])
+			->getMock();
+
+		$pattern = 'pattern';
+		$searchProperties = 'properties';
+
+		$this->backend->expects($this->once())->method('search')
+			->with($this->addressBookInfo['id'], $pattern, $searchProperties)
+			->willReturn(
+				[
+					'cardData1',
+					'cardData2'
+				]
+			);
+
+		$addressBookImpl->expects($this->exactly(2))->method('readCard')
+			->willReturn($this->vCard);
+		$addressBookImpl->expects($this->exactly(2))->method('vCard2Array')
+			->with($this->vCard)->willReturn('vCard');
+
+		$result = $addressBookImpl->search($pattern, $searchProperties, []);
+		$this->assertTrue((is_array($result)));
+		$this->assertSame(2, count($result));
+	}
+
+	/**
+	 * @dataProvider dataTestCreate
+	 *
+	 * @param array $properties
+	 */
+	public function testCreate($properties) {
+
+		$uid = 'uid';
+
+		/** @var \PHPUnit_Framework_MockObject_MockObject | AddressBookImpl $addressBookImpl */
+		$addressBookImpl = $this->getMockBuilder('OCA\DAV\CardDAV\AddressBookImpl')
+			->setConstructorArgs(
+				[
+					$this->addressBook,
+					$this->addressBookInfo,
+					$this->backend
+				]
+			)
+			->setMethods(['vCard2Array', 'createUid', 'createEmptyVCard'])
+			->getMock();
+
+		$addressBookImpl->expects($this->once())->method('createUid')
+			->willReturn($uid);
+		$addressBookImpl->expects($this->once())->method('createEmptyVCard')
+			->with($uid)->willReturn($this->vCard);
+		$this->vCard->expects($this->exactly(count($properties)))
+			->method('createProperty');
+		$this->backend->expects($this->once())->method('createCard');
+		$this->backend->expects($this->never())->method('updateCard');
+		$this->backend->expects($this->never())->method('getCard');
+		$addressBookImpl->expects($this->once())->method('vCard2Array')
+			->with($this->vCard)->willReturn(true);
+
+		$this->assertTrue($addressBookImpl->createOrUpdate($properties));
+	}
+
+	public function dataTestCreate() {
+		return [
+			[[]],
+			[['FN' => 'John Doe']]
+		];
+	}
+
+	public function testUpdate() {
+
+		$uid = 'uid';
+		$properties = ['UID' => $uid, 'FN' => 'John Doe'];
+
+		/** @var \PHPUnit_Framework_MockObject_MockObject | AddressBookImpl $addressBookImpl */
+		$addressBookImpl = $this->getMockBuilder('OCA\DAV\CardDAV\AddressBookImpl')
+			->setConstructorArgs(
+				[
+					$this->addressBook,
+					$this->addressBookInfo,
+					$this->backend
+				]
+			)
+			->setMethods(['vCard2Array', 'createUid', 'createEmptyVCard', 'readCard'])
+			->getMock();
+
+		$addressBookImpl->expects($this->never())->method('createUid');
+		$addressBookImpl->expects($this->never())->method('createEmptyVCard');
+		$this->backend->expects($this->once())->method('getCard')
+			->with($this->addressBookInfo['id'], $uid . '.vcf')
+			->willReturn(['carddata' => 'data']);
+		$addressBookImpl->expects($this->once())->method('readCard')
+			->with('data')->willReturn($this->vCard);
+		$this->vCard->expects($this->exactly(count($properties)))
+			->method('createProperty');
+		$this->backend->expects($this->never())->method('createCard');
+		$this->backend->expects($this->once())->method('updateCard');
+		$addressBookImpl->expects($this->once())->method('vCard2Array')
+			->with($this->vCard)->willReturn(true);
+
+		$this->assertTrue($addressBookImpl->createOrUpdate($properties));
+	}
+
+	/**
+	 * @dataProvider dataTestGetPermissions
+	 *
+	 * @param array $permissions
+	 * @param int $expected
+	 */
+	public function testGetPermissions($permissions, $expected) {
+		$this->addressBook->expects($this->once())->method('getACL')
+			->willReturn($permissions);
+
+		$this->assertSame($expected,
+			$this->addressBookImpl->getPermissions()
+		);
+	}
+
+	public function dataTestGetPermissions() {
+		return [
+			[[], 0],
+			[[['privilege' => '{DAV:}read']], 1],
+			[[['privilege' => '{DAV:}write']], 6],
+			[[['privilege' => '{DAV:}all']], 31],
+			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write']], 7],
+			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}all']], 31],
+			[[['privilege' => '{DAV:}all'],['privilege' => '{DAV:}write']], 31],
+			[[['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write'],['privilege' => '{DAV:}all']], 31],
+			[[['privilege' => '{DAV:}all'],['privilege' => '{DAV:}read'],['privilege' => '{DAV:}write']], 31],
+		];
+	}
+
+	public function testDelete() {
+		$cardId = 1;
+		$cardUri = 'cardUri';
+		$this->backend->expects($this->once())->method('getCardUri')
+			->with($cardId)->willReturn($cardUri);
+		$this->backend->expects($this->once())->method('deleteCard')
+			->with($this->addressBookInfo['id'], $cardUri)
+			->willReturn(true);
+
+		$this->assertTrue($this->addressBookImpl->delete($cardId));
+	}
+
+	public function testReadCard() {
+		$vCard = new VCard();
+		$vCard->add(new Text($vCard, 'UID', 'uid'));
+		$vCardSerialized = $vCard->serialize();
+
+		$result = $this->invokePrivate($this->addressBookImpl, 'readCard', [$vCardSerialized]);
+		$resultSerialized = $result->serialize();
+
+		$this->assertSame($vCardSerialized, $resultSerialized);
+	}
+
+	public function testCreateUid() {
+		/** @var \PHPUnit_Framework_MockObject_MockObject | AddressBookImpl $addressBookImpl */
+		$addressBookImpl = $this->getMockBuilder('OCA\DAV\CardDAV\AddressBookImpl')
+			->setConstructorArgs(
+				[
+					$this->addressBook,
+					$this->addressBookInfo,
+					$this->backend
+				]
+			)
+			->setMethods(['getUid'])
+			->getMock();
+
+		$addressBookImpl->expects($this->at(0))->method('getUid')->willReturn('uid0');
+		$addressBookImpl->expects($this->at(1))->method('getUid')->willReturn('uid1');
+
+		// simulate that 'uid0' already exists, so the second uid will be returned
+		$this->backend->expects($this->exactly(2))->method('getContact')
+			->willReturnCallback(
+				function($uid) {
+					return ($uid === 'uid0.vcf');
+				}
+			);
+
+		$this->assertSame('uid1',
+			$this->invokePrivate($addressBookImpl, 'createUid', [])
+		);
+
+	}
+
+	public function testCreateEmptyVCard() {
+		$uid = 'uid';
+		$expectedVCard = new VCard();
+		$expectedVCard->add(new Text($expectedVCard, 'UID', $uid));
+		$expectedVCardSerialized = $expectedVCard->serialize();
+
+		$result = $this->invokePrivate($this->addressBookImpl, 'createEmptyVCard', [$uid]);
+		$resultSerialized = $result->serialize();
+
+		$this->assertSame($expectedVCardSerialized, $resultSerialized);
+	}
+
+}
--- a/apps/dav/tests/unit/carddav/carddavbackendtest.php
+++ b/apps/dav/tests/unit/carddav/carddavbackendtest.php
@ -20,8 +20,14 @@
 */
 namespace OCA\DAV\Tests\Unit\CardDAV;

+use InvalidArgumentException;
 use OCA\DAV\CardDAV\CardDavBackend;
+use OCA\DAV\Connector\Sabre\Principal;
+use OCP\IDBConnection;
+use OCP\ILogger;
 use Sabre\DAV\PropPatch;
+use Sabre\VObject\Component\VCard;
+use Sabre\VObject\Property\Text;
 use Test\TestCase;

 /**
@ -36,22 +42,46 @@ class CardDavBackendTest extends TestCase {
 	/** @var CardDavBackend */
 	private $backend;

+	/** @var  Principal | \PHPUnit_Framework_MockObject_MockObject */
+	private $principal;
+
+	/** @var  ILogger | \PHPUnit_Framework_MockObject_MockObject */
+	private $logger;
+
+	/** @var  IDBConnection */
+	private $db;
+
+	/** @var string */
+	private $dbCardsTable = 'cards';
+
+	/** @var string */
+	private $dbCardsPropertiesTable = 'cards_properties';
+
 	const UNIT_TEST_USER = 'carddav-unit-test';

 	public function setUp() {
 		parent::setUp();

-		$principal = $this->getMockBuilder('OCA\DAV\Connector\Sabre\Principal')
+		$this->principal = $this->getMockBuilder('OCA\DAV\Connector\Sabre\Principal')
 			->disableOriginalConstructor()
 			->setMethods(['getPrincipalByPath'])
 			->getMock();
-		$principal->method('getPrincipalByPath')
+		$this->principal->method('getPrincipalByPath')
 			->willReturn([
 				'uri' => 'principals/best-friend'
 			]);
+		$this->logger = $this->getMock('\OCP\ILogger');
+
+		$this->db = \OC::$server->getDatabaseConnection();
+
+		$this->backend = new CardDavBackend($this->db, $this->principal, $this->logger);
+
+		// start every test with a empty cards_properties and cards table
+		$query = $this->db->getQueryBuilder();
+		$query->delete('cards_properties')->execute();
+		$query = $this->db->getQueryBuilder();
+		$query->delete('cards')->execute();

-		$db = \OC::$server->getDatabaseConnection();
-		$this->backend = new CardDavBackend($db, $principal);

 		$this->tearDown();
 	}
@ -96,23 +126,32 @@ class CardDavBackendTest extends TestCase {
 	}

 	public function testCardOperations() {
+
+		/** @var CardDavBackend | \PHPUnit_Framework_MockObject_MockObject $backend */
+		$backend = $this->getMockBuilder('OCA\DAV\CardDAV\CardDavBackend')
+				->setConstructorArgs([$this->db, $this->principal, $this->logger])
+				->setMethods(['updateProperties', 'purgeProperties'])->getMock();
+
 		// create a new address book
-		$this->backend->createAddressBook(self::UNIT_TEST_USER, 'Example', []);
-		$books = $this->backend->getAddressBooksForUser(self::UNIT_TEST_USER);
+		$backend->createAddressBook(self::UNIT_TEST_USER, 'Example', []);
+		$books = $backend->getAddressBooksForUser(self::UNIT_TEST_USER);
 		$this->assertEquals(1, count($books));
 		$bookId = $books[0]['id'];

-		// create a card
 		$uri = $this->getUniqueID('card');
-		$this->backend->createCard($bookId, $uri, '');
+		// updateProperties is expected twice, once for createCard and once for updateCard
+		$backend->expects($this->at(0))->method('updateProperties')->with($bookId, $uri, '');
+		$backend->expects($this->at(1))->method('updateProperties')->with($bookId, $uri, '***');
+		// create a card
+		$backend->createCard($bookId, $uri, '');

 		// get all the cards
-		$cards = $this->backend->getCards($bookId);
+		$cards = $backend->getCards($bookId);
 		$this->assertEquals(1, count($cards));
 		$this->assertEquals('', $cards[0]['carddata']);

 		// get the cards
-		$card = $this->backend->getCard($bookId, $uri);
+		$card = $backend->getCard($bookId, $uri);
 		$this->assertNotNull($card);
 		$this->assertArrayHasKey('id', $card);
 		$this->assertArrayHasKey('uri', $card);
@ -122,17 +161,23 @@ class CardDavBackendTest extends TestCase {
 		$this->assertEquals('', $card['carddata']);

 		// update the card
-		$this->backend->updateCard($bookId, $uri, '***');
-		$card = $this->backend->getCard($bookId, $uri);
+		$backend->updateCard($bookId, $uri, '***');
+		$card = $backend->getCard($bookId, $uri);
 		$this->assertEquals('***', $card['carddata']);

 		// delete the card
-		$this->backend->deleteCard($bookId, $uri);
-		$cards = $this->backend->getCards($bookId);
+		$backend->expects($this->once())->method('purgeProperties')->with($bookId, $card['id']);
+		$backend->deleteCard($bookId, $uri);
+		$cards = $backend->getCards($bookId);
 		$this->assertEquals(0, count($cards));
 	}

 	public function testMultiCard() {
+
+		$this->backend = $this->getMockBuilder('OCA\DAV\CardDAV\CardDavBackend')
+			->setConstructorArgs([$this->db, $this->principal, $this->logger])
+			->setMethods(['updateProperties'])->getMock();
+
 		// create a new address book
 		$this->backend->createAddressBook(self::UNIT_TEST_USER, 'Example', []);
 		$books = $this->backend->getAddressBooksForUser(self::UNIT_TEST_USER);
@ -175,6 +220,11 @@ class CardDavBackendTest extends TestCase {
 	}

 	public function testSyncSupport() {
+
+		$this->backend = $this->getMockBuilder('OCA\DAV\CardDAV\CardDavBackend')
+			->setConstructorArgs([$this->db, $this->principal, $this->logger])
+			->setMethods(['updateProperties'])->getMock();
+
 		// create a new address book
 		$this->backend->createAddressBook(self::UNIT_TEST_USER, 'Example', []);
 		$books = $this->backend->getAddressBooksForUser(self::UNIT_TEST_USER);
@ -221,4 +271,273 @@ class CardDavBackendTest extends TestCase {
 		$books = $this->backend->getAddressBooksForUser('principals/best-friend');
 		$this->assertEquals(0, count($books));
 	}
+
+	public function testUpdateProperties() {
+
+		$bookId = 42;
+		$cardUri = 'card-uri';
+		$cardId = 2;
+
+		$backend = $this->getMockBuilder('OCA\DAV\CardDAV\CardDavBackend')
+			->setConstructorArgs([$this->db, $this->principal, $this->logger])
+			->setMethods(['getCardId'])->getMock();
+
+		$backend->expects($this->any())->method('getCardId')->willReturn($cardId);
+
+		// add properties for new vCard
+		$vCard = new VCard();
+		$vCard->add(new Text($vCard, 'UID', $cardUri));
+		$vCard->add(new Text($vCard, 'FN', 'John Doe'));
+		$this->invokePrivate($backend, 'updateProperties', [$bookId, $cardUri, $vCard->serialize()]);
+
+		$query = $this->db->getQueryBuilder();
+		$result = $query->select('*')->from('cards_properties')->execute()->fetchAll();
+
+		$this->assertSame(2, count($result));
+
+		$this->assertSame('UID', $result[0]['name']);
+		$this->assertSame($cardUri, $result[0]['value']);
+		$this->assertSame($bookId, (int)$result[0]['addressbookid']);
+		$this->assertSame($cardId, (int)$result[0]['cardid']);
+
+		$this->assertSame('FN', $result[1]['name']);
+		$this->assertSame('John Doe', $result[1]['value']);
+		$this->assertSame($bookId, (int)$result[1]['addressbookid']);
+		$this->assertSame($cardId, (int)$result[1]['cardid']);
+
+		// update properties for existing vCard
+		$vCard = new VCard();
+		$vCard->add(new Text($vCard, 'FN', 'John Doe'));
+		$this->invokePrivate($backend, 'updateProperties', [$bookId, $cardUri, $vCard->serialize()]);
+
+		$query = $this->db->getQueryBuilder();
+		$result = $query->select('*')->from('cards_properties')->execute()->fetchAll();
+
+		$this->assertSame(1, count($result));
+
+		$this->assertSame('FN', $result[0]['name']);
+		$this->assertSame('John Doe', $result[0]['value']);
+		$this->assertSame($bookId, (int)$result[0]['addressbookid']);
+		$this->assertSame($cardId, (int)$result[0]['cardid']);
+	}
+
+	public function testPurgeProperties() {
+
+		$query = $this->db->getQueryBuilder();
+		$query->insert('cards_properties')
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter(1),
+					'cardid' => $query->createNamedParameter(1),
+					'name' => $query->createNamedParameter('name1'),
+					'value' => $query->createNamedParameter('value1'),
+					'preferred' => $query->createNamedParameter(0)
+				]
+			);
+		$query->execute();
+
+		$query = $this->db->getQueryBuilder();
+		$query->insert('cards_properties')
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter(1),
+					'cardid' => $query->createNamedParameter(2),
+					'name' => $query->createNamedParameter('name2'),
+					'value' => $query->createNamedParameter('value2'),
+					'preferred' => $query->createNamedParameter(0)
+				]
+			);
+		$query->execute();
+
+		$this->invokePrivate($this->backend, 'purgeProperties', [1, 1]);
+
+		$query = $this->db->getQueryBuilder();
+		$result = $query->select('*')->from('cards_properties')->execute()->fetchAll();
+		$this->assertSame(1, count($result));
+		$this->assertSame(1 ,(int)$result[0]['addressbookid']);
+		$this->assertSame(2 ,(int)$result[0]['cardid']);
+
+	}
+
+	public function testGetCardId() {
+		$query = $this->db->getQueryBuilder();
+
+		$query->insert('cards')
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter(1),
+					'carddata' => $query->createNamedParameter(''),
+					'uri' => $query->createNamedParameter('uri'),
+					'lastmodified' => $query->createNamedParameter(4738743),
+					'etag' => $query->createNamedParameter('etag'),
+					'size' => $query->createNamedParameter(120)
+				]
+			);
+		$query->execute();
+		$id = $query->getLastInsertId();
+
+		$this->assertSame($id,
+			$this->invokePrivate($this->backend, 'getCardId', ['uri']));
+	}
+
+	/**
+	 * @expectedException InvalidArgumentException
+	 */
+	public function testGetCardIdFailed() {
+		$this->invokePrivate($this->backend, 'getCardId', ['uri']);
+	}
+
+	/**
+	 * @dataProvider dataTestSearch
+	 *
+	 * @param string $pattern
+	 * @param array $expected
+	 */
+	public function testSearch($pattern, $properties, $expected) {
+		/** @var VCard $vCards */
+		$vCards = [];
+		$vCards[0] = new VCard();
+		$vCards[0]->add(new Text($vCards[0], 'UID', 'uid'));
+		$vCards[0]->add(new Text($vCards[0], 'FN', 'John Doe'));
+		$vCards[0]->add(new Text($vCards[0], 'CLOUD', 'john@owncloud.org'));
+		$vCards[1] = new VCard();
+		$vCards[1]->add(new Text($vCards[1], 'UID', 'uid'));
+		$vCards[1]->add(new Text($vCards[1], 'FN', 'John M. Doe'));
+
+		$vCardIds = [];
+		$query = $this->db->getQueryBuilder();
+		for($i=0; $i<2; $i++) {
+			$query->insert($this->dbCardsTable)
+					->values(
+							[
+									'addressbookid' => $query->createNamedParameter(0),
+									'carddata' => $query->createNamedParameter($vCards[$i]->serialize(), \PDO::PARAM_LOB),
+									'uri' => $query->createNamedParameter('uri' . $i),
+									'lastmodified' => $query->createNamedParameter(time()),
+									'etag' => $query->createNamedParameter('etag' . $i),
+									'size' => $query->createNamedParameter(120),
+							]
+					);
+			$query->execute();
+			$vCardIds[] = $query->getLastInsertId();
+		}
+
+		$query->insert($this->dbCardsPropertiesTable)
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter(0),
+					'cardid' => $query->createNamedParameter($vCardIds[0]),
+					'name' => $query->createNamedParameter('FN'),
+					'value' => $query->createNamedParameter('John Doe'),
+					'preferred' => $query->createNamedParameter(0)
+				]
+			);
+		$query->execute();
+		$query->insert($this->dbCardsPropertiesTable)
+				->values(
+						[
+								'addressbookid' => $query->createNamedParameter(0),
+								'cardid' => $query->createNamedParameter($vCardIds[0]),
+								'name' => $query->createNamedParameter('CLOUD'),
+								'value' => $query->createNamedParameter('John@owncloud.org'),
+								'preferred' => $query->createNamedParameter(0)
+						]
+				);
+		$query->execute();
+		$query->insert($this->dbCardsPropertiesTable)
+			->values(
+				[
+					'addressbookid' => $query->createNamedParameter(0),
+					'cardid' => $query->createNamedParameter($vCardIds[1]),
+					'name' => $query->createNamedParameter('FN'),
+					'value' => $query->createNamedParameter('John M. Doe'),
+					'preferred' => $query->createNamedParameter(0)
+				]
+			);
+		$query->execute();
+
+		$result = $this->backend->search(0, $pattern, $properties);
+
+		// check result
+		$this->assertSame(count($expected), count($result));
+		$found = [];
+		foreach ($result as $r) {
+			foreach ($expected as $exp) {
+				if (strpos($r, $exp) > 0) {
+					$found[$exp] = true;
+					break;
+				}
+			}
+		}
+
+		$this->assertSame(count($expected), count($found));
+	}
+
+	public function dataTestSearch() {
+		return [
+				['John', ['FN'], ['John Doe', 'John M. Doe']],
+				['M. Doe', ['FN'], ['John M. Doe']],
+				['Do', ['FN'], ['John Doe', 'John M. Doe']],
+				// check if duplicates are handled correctly
+				['John', ['FN', 'CLOUD'], ['John Doe', 'John M. Doe']],
+		];
+	}
+
+	public function testGetCardUri() {
+		$query = $this->db->getQueryBuilder();
+		$query->insert($this->dbCardsTable)
+				->values(
+						[
+								'addressbookid' => $query->createNamedParameter(1),
+								'carddata' => $query->createNamedParameter('carddata', \PDO::PARAM_LOB),
+								'uri' => $query->createNamedParameter('uri'),
+								'lastmodified' => $query->createNamedParameter(5489543),
+								'etag' => $query->createNamedParameter('etag'),
+								'size' => $query->createNamedParameter(120),
+						]
+				);
+		$query->execute();
+
+		$id = $query->getLastInsertId();
+
+		$this->assertSame('uri', $this->backend->getCardUri($id));
+	}
+
+	/**
+	 * @expectedException InvalidArgumentException
+	 */
+	public function testGetCardUriFailed() {
+		$this->backend->getCardUri(1);
+	}
+
+	public function testGetContact() {
+		$query = $this->db->getQueryBuilder();
+		for($i=0; $i<2; $i++) {
+			$query->insert($this->dbCardsTable)
+					->values(
+							[
+									'addressbookid' => $query->createNamedParameter($i),
+									'carddata' => $query->createNamedParameter('carddata' . $i, \PDO::PARAM_LOB),
+									'uri' => $query->createNamedParameter('uri' . $i),
+									'lastmodified' => $query->createNamedParameter(5489543),
+									'etag' => $query->createNamedParameter('etag' . $i),
+									'size' => $query->createNamedParameter(120),
+							]
+					);
+			$query->execute();
+		}
+
+		$result = $this->backend->getContact('uri0');
+		$this->assertSame(7, count($result));
+		$this->assertSame(0, (int)$result['addressbookid']);
+		$this->assertSame('uri0', $result['uri']);
+		$this->assertSame(5489543, (int)$result['lastmodified']);
+		$this->assertSame('etag0', $result['etag']);
+		$this->assertSame(120, (int)$result['size']);
+	}
+
+	public function testGetContactFail() {
+		$this->assertEmpty($this->backend->getContact('uri'));
+	}
+
 }