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<?php
/**
* @copyright Copyright (c) 2016, ownCloud GmbH.
*
* @author Julius Härtl <jus@bitgrid.net>
* @author Vincent Petry <pvince81@owncloud.com>
*
* @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\AppInfo;
use OCP\App\IAppManager;
use OC\ServerContainer;
use OCP\AppFramework\QueryException;
/**
* Manager for DAV plugins from apps, used to register them
* to the Sabre server.
*/
class PluginManager {
/**
* @var ServerContainer
*/
private $container;
/**
* @var IAppManager
*/
private $appManager;
/**
* App plugins
*
* @var array
*/
private $plugins = null;
/**
* App collections
*
* @var array
*/
private $collections = null;
/**
* Contstruct a PluginManager
*
* @param ServerContainer $container server container for resolving plugin classes
* @param IAppManager $appManager app manager to loading apps and their info
*/
public function __construct(ServerContainer $container, IAppManager $appManager) {
$this->container = $container;
$this->appManager = $appManager;
}
/**
* Returns an array of app-registered plugins
*
* @return array
*/
public function getAppPlugins() {
if (null === $this->plugins) {
$this->populate();
}
return $this->plugins;
}
/**
* Returns an array of app-registered collections
*
* @return array
*/
public function getAppCollections() {
if (null === $this->collections) {
$this->populate();
}
return $this->collections;
}
/**
* Retrieve plugin and collection list and populate attributes
*/
private function populate() {
$this->plugins = [];
$this->collections = [];
foreach ($this->appManager->getInstalledApps() as $app) {
// load plugins and collections from info.xml
$info = $this->appManager->getAppInfo($app);
if (!isset($info['types']) || !in_array('dav', $info['types'], true)) {
continue;
}
// FIXME: switch to public API once available
// load app to make sure its classes are available
\OC_App::loadApp($app);
$this->loadSabrePluginsFromInfoXml($this->extractPluginList($info));
$this->loadSabreCollectionsFromInfoXml($this->extractCollectionList($info));
}
}
private function extractPluginList(array $array) {
if (isset($array['sabre']) && is_array($array['sabre'])) {
if (isset($array['sabre']['plugins']) && is_array($array['sabre']['plugins'])) {
if (isset($array['sabre']['plugins']['plugin'])) {
$items = $array['sabre']['plugins']['plugin'];
if (!is_array($items)) {
$items = [$items];
}
return $items;
}
}
}
return [];
}
private function extractCollectionList(array $array) {
if (isset($array['sabre']) && is_array($array['sabre'])) {
if (isset($array['sabre']['collections']) && is_array($array['sabre']['collections'])) {
if (isset($array['sabre']['collections']['collection'])) {
$items = $array['sabre']['collections']['collection'];
if (!is_array($items)) {
$items = [$items];
}
return $items;
}
}
}
return [];
}
private function loadSabrePluginsFromInfoXml(array $plugins) {
foreach ($plugins as $plugin) {
try {
$this->plugins[] = $this->container->query($plugin);
} catch (QueryException $e) {
if (class_exists($plugin)) {
$this->plugins[] = new $plugin();
} else {
throw new \Exception("Sabre plugin class '$plugin' is unknown and could not be loaded");
}
}
}
}
private function loadSabreCollectionsFromInfoXml(array $collections) {
foreach ($collections as $collection) {
try {
$this->collections[] = $this->container->query($collection);
} catch (QueryException $e) {
if (class_exists($collection)) {
$this->collections[] = new $collection();
} else {
throw new \Exception("Sabre collection class '$collection' is unknown and could not be loaded");
}
}
}
}
}