Move non PSR-4 files from lib/private root to legacy

As discussed we move all old style classes (OC_FOO_BAR) to legacy.
Then from there we can evaluate the need to convert them back or if they
can be fully deprecated/deleted.

1 files changed, 125 insertions, 0 deletions

diff --git a/lib/private/legacy/eventsource.php b/lib/private/legacy/eventsource.php
new file mode 100644
index 00000000000..f567d1e6ca5
--- /dev/null
+++ b/lib/private/legacy/eventsource.php
@@ -0,0 +1,125 @@
+<?php
+/**
+ * @author Bart Visscher <bartv@thisnet.nl>
+ * @author Felix Moeller <mail@felixmoeller.de>
+ * @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/>
+ *
+ */
+
+/**
+ * wrapper for server side events (http://en.wikipedia.org/wiki/Server-sent_events)
+ * includes a fallback for older browsers and IE
+ *
+ * use server side events with caution, to many open requests can hang the server
+ */
+class OC_EventSource implements \OCP\IEventSource {
+	/**
+	 * @var bool
+	 */
+	private $fallback;
+
+	/**
+	 * @var int
+	 */
+	private $fallBackId = 0;
+
+	/**
+	 * @var bool
+	 */
+	private $started = false;
+
+	protected function init() {
+		if ($this->started) {
+			return;
+		}
+		$this->started = true;
+
+		// prevent php output buffering, caching and nginx buffering
+		OC_Util::obEnd();
+		header('Cache-Control: no-cache');
+		header('X-Accel-Buffering: no');
+		$this->fallback = isset($_GET['fallback']) and $_GET['fallback'] == 'true';
+		if ($this->fallback) {
+			$this->fallBackId = (int)$_GET['fallback_id'];
+			/**
+			 * FIXME: The default content-security-policy of ownCloud forbids inline
+			 * JavaScript for security reasons. IE starting on Windows 10 will
+			 * however also obey the CSP which will break the event source fallback.
+			 *
+			 * As a workaround thus we set a custom policy which allows the execution
+			 * of inline JavaScript.
+			 *
+			 * @link https://github.com/owncloud/core/issues/14286
+			 */
+			header("Content-Security-Policy: default-src 'none'; script-src 'unsafe-inline'");
+			header("Content-Type: text/html");
+			echo str_repeat('<span></span>' . PHP_EOL, 10); //dummy data to keep IE happy
+		} else {
+			header("Content-Type: text/event-stream");
+		}
+		if (!(\OC::$server->getRequest()->passesCSRFCheck())) {
+			$this->send('error', 'Possible CSRF attack. Connection will be closed.');
+			$this->close();
+			exit();
+		}
+		flush();
+	}
+
+	/**
+	 * send a message to the client
+	 *
+	 * @param string $type
+	 * @param mixed $data
+	 *
+	 * @throws \BadMethodCallException
+	 * if only one parameter is given, a typeless message will be send with that parameter as data
+	 */
+	public function send($type, $data = null) {
+		if ($data and !preg_match('/^[A-Za-z0-9_]+$/', $type)) {
+			throw new BadMethodCallException('Type needs to be alphanumeric ('. $type .')');
+		}
+		$this->init();
+		if (is_null($data)) {
+			$data = $type;
+			$type = null;
+		}
+		if ($this->fallback) {
+			$response = '<script type="text/javascript">window.parent.OC.EventSource.fallBackCallBack('
+				. $this->fallBackId . ',"' . $type . '",' . OCP\JSON::encode($data) . ')</script>' . PHP_EOL;
+			echo $response;
+		} else {
+			if ($type) {
+				echo 'event: ' . $type . PHP_EOL;
+			}
+			echo 'data: ' . OCP\JSON::encode($data) . PHP_EOL;
+		}
+		echo PHP_EOL;
+		flush();
+	}
+
+	/**
+	 * close the connection of the event source
+	 */
+	public function close() {
+		$this->send('__internal__', 'close'); //server side closing can be an issue, let the client do it
+	}
+}