1 files changed, 122 insertions, 0 deletions
diff --git a/apps/dav/lib/Connector/PublicAuth.php b/apps/dav/lib/Connector/PublicAuth.php
new file mode 100644
index 00000000000..3aa58cda244
--- /dev/null
+++ b/apps/dav/lib/Connector/PublicAuth.php
@@ -0,0 +1,122 @@
+<?php
+/**
+ * @author Björn Schießle <schiessle@owncloud.com>
+ * @author Lukas Reschke <lukas@owncloud.com>
+ * @author Morris Jobke <hey@morrisjobke.de>
+ * @author Robin Appelman <icewind@owncloud.com>
+ * @author Thomas Müller <thomas.mueller@tmit.eu>
+ * @author Vincent Petry <pvince81@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 OCA\DAV\Connector;
+
+use OCP\IRequest;
+use OCP\ISession;
+use OCP\Share\Exceptions\ShareNotFound;
+use OCP\Share\IManager;
+
+/**
+ * Class PublicAuth
+ *
+ * @package OCA\DAV\Connector
+ */
+class PublicAuth extends \Sabre\DAV\Auth\Backend\AbstractBasic {
+
+	/** @var \OCP\Share\IShare */
+	private $share;
+
+	/** @var IManager */
+	private $shareManager;
+
+	/** @var ISession */
+	private $session;
+
+	/** @var IRequest */
+	private $request;
+
+	/**
+	 * @param IRequest $request
+	 * @param IManager $shareManager
+	 * @param ISession $session
+	 */
+	public function __construct(IRequest $request,
+								IManager $shareManager,
+								ISession $session) {
+		$this->request = $request;
+		$this->shareManager = $shareManager;
+		$this->session = $session;
+	}
+
+	/**
+	 * Validates a username and password
+	 *
+	 * This method should return true or false depending on if login
+	 * succeeded.
+	 *
+	 * @param string $username
+	 * @param string $password
+	 *
+	 * @return bool
+	 * @throws \Sabre\DAV\Exception\NotAuthenticated
+	 */
+	protected function validateUserPass($username, $password) {
+		try {
+			$share = $this->shareManager->getShareByToken($username);
+		} catch (ShareNotFound $e) {
+			return false;
+		}
+
+		$this->share = $share;
+
+		\OC_User::setIncognitoMode(true);
+
+		// check if the share is password protected
+		if ($share->getPassword() !== null) {
+			if ($share->getShareType() === \OCP\Share::SHARE_TYPE_LINK) {
+				if ($this->shareManager->checkPassword($share, $password)) {
+					return true;
+				} else if ($this->session->exists('public_link_authenticated')
+					&& $this->session->get('public_link_authenticated') === $share->getId()) {
+					return true;
+				} else {
+					if (in_array('XMLHttpRequest', explode(',', $this->request->getHeader('X-Requested-With')))) {
+						// do not re-authenticate over ajax, use dummy auth name to prevent browser popup
+						http_response_code(401);
+						header('WWW-Authenticate', 'DummyBasic real="ownCloud"');
+						throw new \Sabre\DAV\Exception\NotAuthenticated('Cannot authenticate over ajax calls');
+					}
+					return false;
+				}
+			} else if ($share->getShareType() === \OCP\Share::SHARE_TYPE_REMOTE) {
+				return true;
+			} else {
+				return false;
+			}
+		} else {
+			return true;
+		}
+	}
+
+	/**
+	 * @return \OCP\Share\IShare
+	 */
+	public function getShare() {
+		return $this->share;
+	}
+}