1 files changed, 160 insertions, 0 deletions
diff --git a/apps/federation/lib/trustedservers.php b/apps/federation/lib/trustedservers.php
new file mode 100644
index 00000000000..bf31277b2a8
--- /dev/null
+++ b/apps/federation/lib/trustedservers.php
@@ -0,0 +1,160 @@
+<?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\Federation;
+
+
+use OC\Files\Filesystem;
+use OCP\AppFramework\Http;
+use OCP\Http\Client\IClientService;
+use OCP\IDBConnection;
+use OCP\ILogger;
+
+class TrustedServers {
+
+	/** @var  dbHandler */
+	private $dbHandler;
+
+	/** @var  IClientService */
+	private $httpClientService;
+
+	/** @var ILogger */
+	private $logger;
+
+	private $dbTable = 'trusted_servers';
+
+	/**
+	 * @param DbHandler $dbHandler
+	 * @param IClientService $httpClientService
+	 * @param ILogger $logger
+	 */
+	public function __construct(
+		DbHandler $dbHandler,
+		IClientService $httpClientService,
+		ILogger $logger
+	) {
+		$this->dbHandler = $dbHandler;
+		$this->httpClientService = $httpClientService;
+		$this->logger = $logger;
+	}
+
+	/**
+	 * add server to the list of trusted ownCloud servers
+	 *
+	 * @param $url
+	 * @return int server id
+	 */
+	public function addServer($url) {
+		return $this->dbHandler->add($this->normalizeUrl($url));
+	}
+
+	/**
+	 * remove server from the list of trusted ownCloud servers
+	 *
+	 * @param int $id
+	 */
+	public function removeServer($id) {
+		$this->dbHandler->remove($id);
+	}
+
+	/**
+	 * get all trusted servers
+	 *
+	 * @return array
+	 */
+	public function getServers() {
+		return $this->dbHandler->getAll();
+	}
+
+	/**
+	 * check if given server is a trusted ownCloud server
+	 *
+	 * @param string $url
+	 * @return bool
+	 */
+	public function isTrustedServer($url) {
+		return $this->dbHandler->exists($this->normalizeUrl($url));
+	}
+
+	/**
+	 * check if URL point to a ownCloud server
+	 *
+	 * @param string $url
+	 * @return bool
+	 */
+	public function isOwnCloudServer($url) {
+		$isValidOwnCloud = false;
+		$client = $this->httpClientService->newClient();
+		try {
+			$result = $client->get(
+				$url . '/status.php',
+				[
+					'timeout' => 3,
+					'connect_timeout' => 3,
+				]
+			);
+			if ($result->getStatusCode() === Http::STATUS_OK) {
+				$isValidOwnCloud = $this->checkOwnCloudVersion($result->getBody());
+			}
+		} catch (\Exception $e) {
+			$this->logger->error($e->getMessage(), ['app' => 'federation']);
+			return false;
+		}
+		return $isValidOwnCloud;
+	}
+
+	/**
+	 * check if ownCloud version is >= 9.0
+	 *
+	 * @param $statusphp
+	 * @return bool
+	 */
+	protected function checkOwnCloudVersion($statusphp) {
+		$decoded = json_decode($statusphp, true);
+		if (!empty($decoded) && isset($decoded['version'])) {
+			return version_compare($decoded['version'], '9.0.0', '>=');
+		}
+		return false;
+	}
+
+	/**
+	 * normalize URL
+	 *
+	 * @param string $url
+	 * @return string
+	 */
+	protected function normalizeUrl($url) {
+
+		$normalized = $url;
+
+		if (strpos($url, 'https://') === 0) {
+			$normalized = substr($url, strlen('https://'));
+		} else if (strpos($url, 'http://') === 0) {
+			$normalized = substr($url, strlen('http://'));
+		}
+
+		$normalized = Filesystem::normalizePath($normalized);
+		$normalized = trim($normalized, '/');
+
+		return $normalized;
+	}
+}