From 154c601157c581f06dc0651fc91d4b57683483d4 Mon Sep 17 00:00:00 2001
From: Ralf Becker <ralfbecker@outdoor-training.de>
Date: Thu, 12 Jul 2012 08:20:33 +0000
Subject: [PATCH] * Filemanager: support for ownCloud WebDAV clients which keep
 a local directory in sync with server (by default users home-dir with local
 ownCloud dir, thought other dirs can be configured as well)

---
 files/webdav.php | 95 ++++++++++++++++++++++++++++++++++++++++++++++++
 status.php       | 35 ++++++++++++++++++
 2 files changed, 130 insertions(+)
 create mode 100644 files/webdav.php
 create mode 100644 status.php

diff --git a/files/webdav.php b/files/webdav.php
new file mode 100644
index 0000000000..a55021b234
--- /dev/null
+++ b/files/webdav.php
@@ -0,0 +1,95 @@
+<?php
+/**
+ * FileManger - WebDAV access for ownCloud clients
+ *
+ * ownCloud clients sync by default local ownCloud dir to /clientsync on server.
+ * EGroupware now automaticially mount /home/$user on /clientsync, so ownCloud clients syncs with users home-dir.
+ *
+ * @link http://owncloud.org/sync-clients/
+ * @link http://www.egroupware.org
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package api
+ * @subpackage vfs
+ * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @copyright (c) 2006-12 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @version $Id$
+ */
+
+$starttime = microtime(true);
+
+/**
+ * check if the given user has access
+ *
+ * Create a session or if the user has no account return authenticate header and 401 Unauthorized
+ *
+ * @param array &$account
+ * @return int session-id
+ */
+function check_access(&$account)
+{
+	if (isset($_GET['auth']))
+	{
+		list($_SERVER['PHP_AUTH_USER'],$_SERVER['PHP_AUTH_PW']) = explode(':',base64_decode($_GET['auth']),2);
+	}
+	return egw_digest_auth::autocreate_session_callback($account);
+}
+
+$GLOBALS['egw_info'] = array(
+	'flags' => array(
+		'disable_Template_class' => True,
+		'noheader'  => True,
+		'currentapp' => preg_match('|/webdav.php/apps/([A-Za-z0-9_-]+)/|', $_SERVER['REQUEST_URI'], $matches) ? $matches[1] : 'filemanager',
+		'autocreate_session_callback' => 'check_access',
+		'no_exception_handler' => 'basic_auth',	// we use a basic auth exception handler (sends exception message as basic auth realm)
+		'auth_realm' => 'EGroupware WebDAV server',	// cant use vfs_webdav_server::REALM as autoloading and include path not yet setup!
+	)
+);
+require_once('../phpgwapi/inc/class.egw_digest_auth.inc.php');
+
+// if you move this file somewhere else, you need to adapt the path to the header!
+try
+{
+	include(dirname(__DIR__).'/header.inc.php');
+}
+catch (egw_exception_no_permission_app $e)
+{
+	if (isset($GLOBALS['egw_info']['user']['apps']['filemanager']))
+	{
+		$GLOBALS['egw_info']['currentapp'] = 'filemanager';
+	}
+	elseif (isset($GLOBALS['egw_info']['user']['apps']['sitemgr-link']))
+	{
+		$GLOBALS['egw_info']['currentapp'] = 'sitemgr-link';
+	}
+	else
+	{
+		throw $e;
+	}
+}
+//$headertime = microtime(true);
+
+// automatically mount ownCloud default /clientsync as /home/$user, so ownCloud dir contains users home-dir
+if (strpos($_SERVER['REQUEST_URI'],'/webdav.php/clientsync') !== false &&
+	($fstab=egw_vfs::mount()) && !isset($fstab['/clientsync']))
+{
+	$is_root_backup = egw_vfs::$is_root;
+	egw_vfs::$is_root = true;
+	$ok = egw_vfs::mount($url='vfs://default/home/$user',$clientsync='/clientsync');
+	egw_vfs::$is_root = $is_root_backup;
+	error_log("mounting ownCloud default '$clientsync' as '$url' ".($ok ? 'successful' : 'failed!'));
+}
+
+// webdav is stateless: we dont need to keep the session open, it only blocks other calls to same basic-auth session
+$GLOBALS['egw']->session->commit_session();
+
+$webdav_server = new vfs_webdav_server();
+$user_agent = strtolower($_SERVER['HTTP_USER_AGENT']);
+if (strstr($user_agent, 'microsoft-webdav') !== false ||
+	strstr($user_agent, 'neon') !== false ||
+	strstr($user_agent, 'bitkinex') !== false)
+{
+	// Windows 7 et.al. special treatment
+	$webdav_server->cnrnd = true;
+}
+$webdav_server->ServeRequest();
+//error_log(sprintf('WebDAV %s request: status "%s", took %5.3f s'.($headertime?' (header include took %5.3f s)':''),$_SERVER['REQUEST_METHOD'].' '.$_SERVER['PATH_INFO'],$webdav_server->_http_status,microtime(true)-$starttime,$headertime-$starttime));
diff --git a/status.php b/status.php
new file mode 100644
index 0000000000..7dbecc3d66
--- /dev/null
+++ b/status.php
@@ -0,0 +1,35 @@
+<?php
+/**
+ * FileManger - WebDAV access for ownCloud clients
+ *
+ * ownCloud clients require this url to return some json encoded properties
+ *
+ * @link http://owncloud.org/sync-clients/
+ * @link http://www.egroupware.org
+ * @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
+ * @package api
+ * @subpackage vfs
+ * @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @copyright (c) 2006-12 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
+ * @version $Id$
+ */
+// forward for not existing or empty header to setup
+if(!file_exists('header.inc.php') || !filesize('header.inc.php'))
+{
+	Header('Location: setup/index.php');
+	exit;
+}
+$GLOBALS['egw_info'] = array(
+	'flags' => array(
+		'currentapp' => 'login',
+		'noheader'   => True,
+	)
+);
+include 'header.inc.php';
+
+echo json_encode(array(
+	'installed' => 'true',
+	'version'   => '4.80.1',
+	'versionstring' => 'EGroupware '.$GLOBALS['egw_info']['server']['versions']['phpgwapi'],
+	'edition'   => '',
+));