token based auth

* Add InvalidTokenException
* add DefaultTokenMapper and use it to check if a auth token exists
* create new token for the browser session if none exists
hash stored token; save user agent
* encrypt login password when creating the token

1 files changed, 91 insertions, 0 deletions

diff --git a/lib/private/Authentication/Token/DefaultTokenProvider.php b/lib/private/Authentication/Token/DefaultTokenProvider.php
new file mode 100644
index 00000000000..c8aa396526b
--- /dev/null
+++ b/lib/private/Authentication/Token/DefaultTokenProvider.php
@@ -0,0 +1,91 @@
+<?php
+
+/**
+ * @author Christoph Wurst <christoph@owncloud.com>
+ *
+ * @copyright Copyright (c) 2016, 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 OC\Authentication\Token;
+
+use OC\Authentication\Exceptions\InvalidTokenException;
+use OCP\AppFramework\Db\DoesNotExistException;
+use OCP\IConfig;
+use OCP\ILogger;
+use OCP\Security\ICrypto;
+
+class DefaultTokenProvider implements IProvider {
+
+	/** @var DefaultTokenMapper */
+	private $mapper;
+
+	/** @var ICrypto */
+	private $crypto;
+
+	/** @var IConfig */
+	private $config;
+
+	/** @var ILogger $logger */
+	private $logger;
+
+	public function __construct(DefaultTokenMapper $mapper, ICrypto $crypto,
+		IConfig $config, ILogger $logger) {
+		$this->mapper = $mapper;
+		$this->crypto = $crypto;
+		$this->config = $config;
+		$this->logger = $logger;
+	}
+
+	/**
+	 * Create and persist a new token
+	 *
+	 * @param string $token
+	 * @param string $uid
+	 * @param string $password
+	 * @return DefaultToken
+	 */
+	public function generateToken($token, $uid, $password, $name) {
+		$dbToken = new DefaultToken();
+		$dbToken->setUid($uid);
+		$secret = $this->config->getSystemValue('secret');
+		$dbToken->setPassword($this->crypto->encrypt($password . $secret));
+		$dbToken->setName($name);
+		$dbToken->setToken(hash('sha512', $token));
+
+		$this->mapper->insert($dbToken);
+
+		return $dbToken;
+	}
+
+	/**
+	 * @param string $token
+	 * @throws InvalidTokenException
+	 * @return string user UID
+	 */
+	public function validateToken($token) {
+		$this->logger->debug('validating default token <' . $token . '>');
+		try {
+			$dbToken = $this->mapper->getTokenUser(hash('sha512', $token));
+			$this->logger->debug('valid token for ' . $dbToken->getUid());
+			return $dbToken->getUid();
+		} catch (DoesNotExistException $ex) {
+			$this->logger->warning('invalid token');
+			throw new InvalidTokenException();
+		}
+	}
+
+}