Merge branch 'master' into type-hinting

Conflicts: lib/private/image.php lib/private/l10n.php lib/private/request.php lib/private/share/mailnotifications.php lib/private/template/base.php
author: Bart Visscher <bartv@thisnet.nl> 2014-03-31 21:38:54 +0200
committer: Bart Visscher <bartv@thisnet.nl> 2014-03-31 21:38:54 +0200
commit: 6b061c236dd5730837b567f2c39a19af1617d33c (patch)
tree: 27de0d46deae2987ea398f2f2aee4e26786c6f48 /lib/private
parent: 8951328a87c16e5ebfe4d3e5c392347db1e54f92 (diff)
parent: ab696edba685cd6d2a64c2e48907f03197aae53f (diff)
download: nextcloud-server-6b061c236dd5730837b567f2c39a19af1617d33c.tar.gz
nextcloud-server-6b061c236dd5730837b567f2c39a19af1617d33c.zip
63 files changed, 3277 insertions, 1115 deletions
diff --git a/lib/private/api.php b/lib/private/api.php
index 3f96196e6df..b3b5eb1067b 100644
--- a/lib/private/api.php
+++ b/lib/private/api.php
@@ -65,8 +65,8 @@ class OC_API {
 		$name = strtolower($method).$url;
 		$name = str_replace(array('/', '{', '}'), '_', $name);
 		if(!isset(self::$actions[$name])) {
-			OC::getRouter()->useCollection('ocs');
-			OC::getRouter()->create($name, $url)
+			OC::$server->getRouter()->useCollection('ocs');
+			OC::$server->getRouter()->create($name, $url)
 				->method($method)
 				->defaults($defaults)
 				->requirements($requirements)
@@ -116,9 +116,7 @@ class OC_API {
 				);
 		}
 		$response = self::mergeResponses($responses);
-		$formats = array('json', 'xml');
-
-		$format = !empty($_GET['format']) && in_array($_GET['format'], $formats) ? $_GET['format'] : 'xml';
+		$format = self::requestedFormat();
 		if (self::$logoutRequired) {
 			OC_User::logout();
 		}
@@ -270,6 +268,18 @@ class OC_API {
 	 * @return string|false (username, or false on failure)
 	 */
 	private static function loginUser(){
+
+		// reuse existing login
+		$loggedIn = OC_User::isLoggedIn();
+		$ocsApiRequest = isset($_SERVER['HTTP_OCS_APIREQUEST']) ? $_SERVER['HTTP_OCS_APIREQUEST'] === 'true' : false;
+		if ($loggedIn === true && $ocsApiRequest) {
+
+			// initialize the user's filesystem
+			\OC_Util::setUpFS(\OC_User::getUser());
+
+			return OC_User::getUser();
+		}
+
 		// basic auth
 		$authUser = isset($_SERVER['PHP_AUTH_USER']) ? $_SERVER['PHP_AUTH_USER'] : '';
 		$authPw = isset($_SERVER['PHP_AUTH_PW']) ? $_SERVER['PHP_AUTH_PW'] : '';
@@ -283,17 +293,6 @@ class OC_API {
 			return $authUser;
 		}
 
-		// reuse existing login
-		$loggedIn = OC_User::isLoggedIn();
-		$ocsApiRequest = isset($_SERVER['HTTP_OCS_APIREQUEST']) ? $_SERVER['HTTP_OCS_APIREQUEST'] === 'true' : false;
-		if ($loggedIn === true && $ocsApiRequest) {
-
-			// initialize the user's filesystem
-			\OC_Util::setUpFS(\OC_User::getUser());
-
-			return OC_User::getUser();
-		}
-
 		return false;
 	}
 
@@ -349,4 +348,33 @@ class OC_API {
 		}
 	}
 
+	/**
+	 * @return string
+	 */
+	public static function requestedFormat() {
+		$formats = array('json', 'xml');
+
+		$format = !empty($_GET['format']) && in_array($_GET['format'], $formats) ? $_GET['format'] : 'xml';
+		return $format;
+	}
+
+	/**
+	 * Based on the requested format the response content type is set
+	 */
+	public static function setContentType() {
+		$format = \OC_API::requestedFormat();
+		if ($format === 'xml') {
+			header('Content-type: text/xml; charset=UTF-8');
+			return;
+		}
+
+		if ($format === 'json') {
+			header('Content-Type: application/json; charset=utf-8');
+			return;
+		}
+
+		header('Content-Type: application/octet-stream; charset=utf-8');
+	}
+
+
 }
diff --git a/lib/private/app.php b/lib/private/app.php
index 048d4d4aeb1..58bf67c1d47 100644
--- a/lib/private/app.php
+++ b/lib/private/app.php
@@ -219,6 +219,8 @@ class OC_App{
 				$appdata=OC_OCSClient::getApplication($app);
 				$download=OC_OCSClient::getApplicationDownload($app, 1);
 				if(isset($download['downloadlink']) and $download['downloadlink']!='') {
+					// Replace spaces in download link without encoding entire URL
+					$download['downloadlink'] = str_replace(' ', '%20', $download['downloadlink']);
 					$info = array('source'=>'http', 'href'=>$download['downloadlink'], 'appdata'=>$appdata);
 					$app=OC_Installer::installApp($info);
 				}
diff --git a/lib/private/appframework/routing/routeconfig.php b/lib/private/appframework/routing/routeconfig.php
index 716358444a2..35bee75cc4d 100644
--- a/lib/private/appframework/routing/routeconfig.php
+++ b/lib/private/appframework/routing/routeconfig.php
@@ -23,6 +23,7 @@
 namespace OC\AppFramework\routing;
 
 use OC\AppFramework\DependencyInjection\DIContainer;
+use OCP\Route\IRouter;
 
 /**
  * Class RouteConfig
@@ -36,10 +37,10 @@ class RouteConfig {
 
 	/**
 	 * @param \OC\AppFramework\DependencyInjection\DIContainer $container
-	 * @param \OC_Router $router
+	 * @param \OCP\Route\IRouter $router
 	 * @internal param $appName
 	 */
-	public function __construct(DIContainer $container, \OC_Router $router, $routes) {
+	public function __construct(DIContainer $container, IRouter $router, $routes) {
 		$this->routes = $routes;
 		$this->container = $container;
 		$this->router = $router;
@@ -47,7 +48,7 @@ class RouteConfig {
 	}
 
 	/**
-	 * The routes and resource will be registered to the \OC_Router
+	 * The routes and resource will be registered to the \OCP\Route\IRouter
 	 */
 	public function register() {
 
diff --git a/lib/private/cache/file.php b/lib/private/cache/file.php
index 8a6ef39f61b..be6805a9a57 100644
--- a/lib/private/cache/file.php
+++ b/lib/private/cache/file.php
@@ -1,6 +1,7 @@
 <?php
 /**
  * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * Copyright (c) 2014 Vincent Petry <pvince81@owncloud.com>
  * This file is licensed under the Affero General Public License version 3 or
  * later.
  * See the COPYING-README file.
@@ -10,22 +11,22 @@ namespace OC\Cache;
 
 class File {
 	protected $storage;
+
+	/**
+	 * Returns the cache storage for the logged in user
+	 * @return cache storage
+	 */
 	protected function getStorage() {
 		if (isset($this->storage)) {
 			return $this->storage;
 		}
 		if(\OC_User::isLoggedIn()) {
 			\OC\Files\Filesystem::initMountPoints(\OC_User::getUser());
-			$subdir = 'cache';
-			$view = new \OC\Files\View('/' . \OC_User::getUser());
-			if(!$view->file_exists($subdir)) {
-				$view->mkdir($subdir);
-			}
-			$this->storage = new \OC\Files\View('/' . \OC_User::getUser().'/'.$subdir);
+			$this->storage = new \OC\Files\View('/' . \OC_User::getUser() . '/cache');
 			return $this->storage;
 		}else{
 			\OC_Log::write('core', 'Can\'t get cache storage, user not logged in', \OC_Log::ERROR);
-			return false;
+			throw new \OC\ForbiddenException('Can\t get cache storage, user not logged in');
 		}
 	}
 
diff --git a/lib/private/config.php b/lib/private/config.php
index 3649da84973..56f47256134 100644
--- a/lib/private/config.php
+++ b/lib/private/config.php
@@ -77,7 +77,7 @@ class Config {
 	/**
 	 * @brief Gets a value from config.php
 	 * @param string $key key
-	 * @param string|null $default = null default value
+	 * @param array|bool|string|null $default = null default value
 	 * @return string the value or $default
 	 *
 	 * This function gets the value from config.php. If it does not exist,
diff --git a/lib/private/connector/sabre/auth.php b/lib/private/connector/sabre/auth.php
index 0c84fa6b757..5577273df8c 100644
--- a/lib/private/connector/sabre/auth.php
+++ b/lib/private/connector/sabre/auth.php
@@ -73,6 +73,20 @@ class OC_Connector_Sabre_Auth extends Sabre_DAV_Auth_Backend_AbstractBasic {
 	  */
 	public function authenticate(Sabre_DAV_Server $server, $realm) {
 
+		$result = $this->auth($server, $realm);
+
+		// close the session - right after authentication there is not need to write to the session any more
+		\OC::$session->close();
+
+		return $result;
+    }
+
+	/**
+	 * @param Sabre_DAV_Server $server
+	 * @param $realm
+	 * @return bool
+	 */
+	private function auth(Sabre_DAV_Server $server, $realm) {
 		if (OC_User::handleApacheAuth() || OC_User::isLoggedIn()) {
 			$user = OC_User::getUser();
 			OC_Util::setupFS($user);
@@ -81,5 +95,5 @@ class OC_Connector_Sabre_Auth extends Sabre_DAV_Auth_Backend_AbstractBasic {
 		}
 
 		return parent::authenticate($server, $realm);
-    }
+	}
 }
diff --git a/lib/private/connector/sabre/directory.php b/lib/private/connector/sabre/directory.php
index 02d1a9f4ba2..3ed9e94d69b 100644
--- a/lib/private/connector/sabre/directory.php
+++ b/lib/private/connector/sabre/directory.php
@@ -50,7 +50,7 @@ class OC_Connector_Sabre_Directory extends OC_Connector_Sabre_Node implements Sa
 	 */
 	public function createFile($name, $data = null) {
 
-		if ($name === 'Shared' && empty($this->path)) {
+		if (strtolower($name) === 'shared' && empty($this->path)) {
 			throw new \Sabre_DAV_Exception_Forbidden();
 		}
 
@@ -86,7 +86,7 @@ class OC_Connector_Sabre_Directory extends OC_Connector_Sabre_Node implements Sa
 	 */
 	public function createDirectory($name) {
 
-		if ($name === 'Shared' && empty($this->path)) {
+		if (strtolower($name) === 'shared' && empty($this->path)) {
 			throw new \Sabre_DAV_Exception_Forbidden();
 		}
 
diff --git a/lib/private/connector/sabre/objecttree.php b/lib/private/connector/sabre/objecttree.php
index d2fa425b22c..accf020daa2 100644
--- a/lib/private/connector/sabre/objecttree.php
+++ b/lib/private/connector/sabre/objecttree.php
@@ -94,6 +94,9 @@ class ObjectTree extends \Sabre_DAV_ObjectTree {
 		}
 		if ($sourceDir !== $destinationDir) {
 			// for a full move we need update privileges on sourcePath and sourceDir as well as destinationDir
+			if (ltrim($destinationDir, '/') === '' && strtolower($sourceNode->getName()) === 'shared') {
+				throw new \Sabre_DAV_Exception_Forbidden();
+			}
 			if (!$fs->isUpdatable($sourceDir)) {
 				throw new \Sabre_DAV_Exception_Forbidden();
 			}
diff --git a/lib/private/db/mdb2schemareader.php b/lib/private/db/mdb2schemareader.php
index f9a76786c3e..1c16d03eab2 100644
--- a/lib/private/db/mdb2schemareader.php
+++ b/lib/private/db/mdb2schemareader.php
@@ -41,7 +41,9 @@ class MDB2SchemaReader {
 	 */
 	public function loadSchemaFromFile($file) {
 		$schema = new \Doctrine\DBAL\Schema\Schema();
+		$loadEntities = libxml_disable_entity_loader(false);
 		$xml = simplexml_load_file($file);
+		libxml_disable_entity_loader($loadEntities);
 		foreach ($xml->children() as $child) {
 			/**
 			 * @var \SimpleXMLElement $child
diff --git a/lib/private/db/statementwrapper.php b/lib/private/db/statementwrapper.php
index eaf215c7231..492209b883b 100644
--- a/lib/private/db/statementwrapper.php
+++ b/lib/private/db/statementwrapper.php
@@ -8,6 +8,11 @@
 
 /**
  * small wrapper around \Doctrine\DBAL\Driver\Statement to make it behave, more like an MDB2 Statement
+ *
+ * @method boolean bindValue(mixed $param, mixed $value, integer $type = null);
+ * @method string errorCode();
+ * @method array errorInfo();
+ * @method integer rowCount();
  */
 class OC_DB_StatementWrapper {
 	/**
@@ -161,6 +166,8 @@ class OC_DB_StatementWrapper {
     
 	/**
 	 * provide an alias for fetch
+	 *
+	 * @return mixed
 	 */
 	public function fetchRow() {
 		return $this->statement->fetch();
@@ -168,12 +175,13 @@ class OC_DB_StatementWrapper {
 
 	/**
 	 * Provide a simple fetchOne.
+	 *
 	 * fetch single column from the next row
-	 * @param int $colnum the column number to fetch
+	 * @param int $column the column number to fetch
 	 * @return string
 	 */
-	public function fetchOne($colnum = 0) {
-		return $this->statement->fetchColumn($colnum);
+	public function fetchOne($column = 0) {
+		return $this->statement->fetchColumn($column);
 	}
 
 	/**
diff --git a/lib/private/defaults.php b/lib/private/defaults.php
index 59630cda5c0..79be211b82f 100644
--- a/lib/private/defaults.php
+++ b/lib/private/defaults.php
@@ -21,6 +21,7 @@ class OC_Defaults {
 	private $defaultDocBaseUrl;
 	private $defaultSlogan;
 	private $defaultLogoClaim;
+	private $defaultMailHeaderColor;
 
 	function __construct() {
 		$this->l = OC_L10N::get('core');
@@ -33,6 +34,7 @@ class OC_Defaults {
 		$this->defaultDocBaseUrl = "http://doc.owncloud.org";
 		$this->defaultSlogan = $this->l->t("web services under your control");
 		$this->defaultLogoClaim = "";
+		$this->defaultMailHeaderColor = "#1d2d44"; /* header color of mail notifications */
 
 		if (class_exists("OC_Theme")) {
 			$this->theme = new OC_Theme();
@@ -181,4 +183,16 @@ class OC_Defaults {
 		return $this->getDocBaseUrl() . '/server/6.0/go.php?to=' . $key;
 	}
 
+	/**
+	 * Returns mail header color
+	 * @return mail header color
+	 */
+	public function getMailHeaderColor() {
+		if ($this->themeExist('getMailHeaderColor')) {
+			return $this->theme->getMailHeaderColor();
+		} else {
+			return $this->defaultMailHeaderColor;
+		}
+	}
+
 }
diff --git a/lib/private/eventsource.php b/lib/private/eventsource.php
index 4df0bc2e7cd..5a41ddd8b37 100644
--- a/lib/private/eventsource.php
+++ b/lib/private/eventsource.php
@@ -63,8 +63,9 @@ class OC_EventSource{
 			$type=null;
 		}
 		if($this->fallback) {
+			$fallBackId = OC_Util::sanitizeHTML($this->fallBackId);
 			$response='<script type="text/javascript">window.parent.OC.EventSource.fallBackCallBack('
-				.$this->fallBackId.',"' . $type . '",' . OCP\JSON::encode($data) . ')</script>' . PHP_EOL;
+				.$fallBackId.',"' . $type . '",' . OCP\JSON::encode($data) . ')</script>' . PHP_EOL;
 			echo $response;
 		}else{
 			if($type) {
diff --git a/lib/private/files.php b/lib/private/files.php
index 7e7a27f48dc..bfe6d3c02da 100644
--- a/lib/private/files.php
+++ b/lib/private/files.php
@@ -148,8 +148,9 @@ class OC_Files {
 			set_time_limit($executionTime);
 		} else {
 			if ($xsendfile) {
+				$view = \OC\Files\Filesystem::getView();
 				/** @var $storage \OC\Files\Storage\Storage */
-				list($storage) = \OC\Files\Filesystem::resolvePath($filename);
+				list($storage) = $view->resolvePath($filename);
 				if ($storage->isLocal()) {
 					self::addSendfileHeader(\OC\Files\Filesystem::getLocalFile($filename));
 				} else {
diff --git a/lib/private/files/cache/cache.php b/lib/private/files/cache/cache.php
index 9b18257088c..abc11e76470 100644
--- a/lib/private/files/cache/cache.php
+++ b/lib/private/files/cache/cache.php
@@ -498,9 +498,10 @@ class Cache {
 	 * update the folder size and the size of all parent folders
 	 *
 	 * @param string|boolean $path
+	 * @param array $data (optional) meta data of the folder
 	 */
-	public function correctFolderSize($path) {
-		$this->calculateFolderSize($path);
+	public function correctFolderSize($path, $data = null) {
+		$this->calculateFolderSize($path, $data);
 		if ($path !== '') {
 			$parent = dirname($path);
 			if ($parent === '.' or $parent === '/') {
@@ -514,11 +515,14 @@ class Cache {
 	 * get the size of a folder and set it in the cache
 	 *
 	 * @param string $path
+	 * @param array $entry (optional) meta data of the folder
 	 * @return int
 	 */
-	public function calculateFolderSize($path) {
+	public function calculateFolderSize($path, $entry = null) {
 		$totalSize = 0;
-		$entry = $this->get($path);
+		if (is_null($entry) or !isset($entry['fileid'])) {
+			$entry = $this->get($path);
+		}
 		if ($entry && $entry['mimetype'] === 'httpd/unix-directory') {
 			$id = $entry['fileid'];
 			$sql = 'SELECT SUM(`size`) AS f1, MIN(`size`) AS f2, ' .
@@ -540,7 +544,7 @@ class Cache {
 				if ($entry['size'] !== $totalSize) {
 					$update['size'] = $totalSize;
 				}
-				if ($entry['unencrypted_size'] !== $unencryptedSum) {
+				if (!isset($entry['unencrypted_size']) or $entry['unencrypted_size'] !== $unencryptedSum) {
 					$update['unencrypted_size'] = $unencryptedSum;
 				}
 				if (count($update) > 0) {
diff --git a/lib/private/files/cache/homecache.php b/lib/private/files/cache/homecache.php
index a7c310a3782..2326c46e8d0 100644
--- a/lib/private/files/cache/homecache.php
+++ b/lib/private/files/cache/homecache.php
@@ -13,26 +13,37 @@ class HomeCache extends Cache {
 	 * get the size of a folder and set it in the cache
 	 *
 	 * @param string $path
+	 * @param array $entry (optional) meta data of the folder
 	 * @return int
 	 */
-	public function calculateFolderSize($path) {
-		if ($path !== '/' and $path !== '' and $path !== 'files') {
-			return parent::calculateFolderSize($path);
+	public function calculateFolderSize($path, $entry = null) {
+		if ($path !== '/' and $path !== '' and $path !== 'files' and $path !== 'files_trashbin') {
+			return parent::calculateFolderSize($path, $entry);
+		} elseif ($path === '' or $path === '/') {
+			// since the size of / isn't used (the size of /files is used instead) there is no use in calculating it
+			return 0;
 		}
 
 		$totalSize = 0;
-		$entry = $this->get($path);
+		if (is_null($entry)) {
+			$entry = $this->get($path);
+		}
 		if ($entry && $entry['mimetype'] === 'httpd/unix-directory') {
 			$id = $entry['fileid'];
-			$sql = 'SELECT SUM(`size`) FROM `*PREFIX*filecache` ' .
+			$sql = 'SELECT SUM(`size`) AS f1, ' .
+			   'SUM(`unencrypted_size`) AS f2 FROM `*PREFIX*filecache` ' .
 				'WHERE `parent` = ? AND `storage` = ? AND `size` >= 0';
 			$result = \OC_DB::executeAudited($sql, array($id, $this->getNumericStorageId()));
 			if ($row = $result->fetchRow()) {
-				list($sum) = array_values($row);
+				list($sum, $unencryptedSum) = array_values($row);
 				$totalSize = (int)$sum;
+				$unencryptedSize = (int)$unencryptedSum;
 				if ($entry['size'] !== $totalSize) {
 					$this->update($id, array('size' => $totalSize));
 				}
+				if ($entry['unencrypted_size'] !== $unencryptedSize) {
+					$this->update($id, array('unencrypted_size' => $unencryptedSize));
+				}
 			}
 		}
 		return $totalSize;
@@ -40,6 +51,7 @@ class HomeCache extends Cache {
 
 	/**
 	 * @param string $path
+	 * @return array
 	 */
 	public function get($path) {
 		$data = parent::get($path);
diff --git a/lib/private/files/cache/legacy.php b/lib/private/files/cache/legacy.php
deleted file mode 100644
index 4d5f58741e9..00000000000
--- a/lib/private/files/cache/legacy.php
+++ /dev/null
@@ -1,139 +0,0 @@
-<?php
-/**
- * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
- * This file is licensed under the Affero General Public License version 3 or
- * later.
- * See the COPYING-README file.
- */
-
-namespace OC\Files\Cache;
-
-/**
- * Provide read only support for the old filecache
- */
-class Legacy {
-	private $user;
-
-	private $cacheHasItems = null;
-
-	/**
-	 * @param string $user
-	 */
-	public function __construct($user) {
-		$this->user = $user;
-	}
-
-	/**
-	 * get the numbers of items in the legacy cache
-	 *
-	 * @return int
-	 */
-	function getCount() {
-		$sql = 'SELECT COUNT(`id`) AS `count` FROM `*PREFIX*fscache` WHERE `user` = ?';
-		$result = \OC_DB::executeAudited($sql, array($this->user));
-		if ($row = $result->fetchRow()) {
-			return $row['count'];
-		} else {
-			return 0;
-		}
-	}
-
-	/**
-	 * check if a legacy cache is present and holds items
-	 *
-	 * @return bool
-	 */
-	function hasItems() {
-		if (!is_null($this->cacheHasItems)) {
-			return $this->cacheHasItems;
-		}
-		try {
-			$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*fscache` WHERE `user` = ?',1);
-		} catch (\Exception $e) {
-			$this->cacheHasItems = false;
-			return false;
-		}
-		try {
-			$result = $query->execute(array($this->user));
-		} catch (\Exception $e) {
-			$this->cacheHasItems = false;
-			return false;
-		}
-
-		if ($result === false || property_exists($result, 'error_message_prefix')) {
-			$this->cacheHasItems = false;
-			return false;
-		}
-
-		$this->cacheHasItems = (bool)$result->fetchRow();
-		return $this->cacheHasItems;
-	}
-
-	/**
-	 * get an item from the legacy cache
-	 *
-	 * @param string $path
-	 * @return array
-	 */
-	function get($path) {
-		if (is_numeric($path)) {
-			$sql = 'SELECT * FROM `*PREFIX*fscache` WHERE `id` = ?';
-		} else {
-			$sql = 'SELECT * FROM `*PREFIX*fscache` WHERE `path` = ?';
-		}
-		$result = \OC_DB::executeAudited($sql, array($path));
-		$data = $result->fetchRow();
-		$data['etag'] = $this->getEtag($data['path'], $data['user']);
-		return $data;
-	}
-
-	/**
-	 * Get the ETag for the given path
-	 *
-	 * @param type $path
-	 * @return string
-	 */
-	function getEtag($path, $user = null) {
-		static $query = null;
-
-		$pathDetails = explode('/', $path, 4);
-		if((!$user) && !isset($pathDetails[1])) {
-			//no user!? Too odd, return empty string.
-			return '';
-		} else if(!$user) {
-			//guess user from path, if no user passed.
-			$user = $pathDetails[1];
-		}
-
-		if(!isset($pathDetails[3]) || is_null($pathDetails[3])) {
-			$relativePath = '';
-		} else {
-			$relativePath = $pathDetails[3];
-		}
-
-		if(is_null($query)){
-			$query = \OC_DB::prepare('SELECT `propertyvalue` FROM `*PREFIX*properties` WHERE `userid` = ? AND `propertypath` = ? AND `propertyname` = \'{DAV:}getetag\'');
-		}
-		$result = \OC_DB::executeAudited($query,array($user, '/' . $relativePath));
-		if ($row = $result->fetchRow()) {
-			return trim($row['propertyvalue'], '"');
-		} else {
-			return '';
-		}
-	}
-
-	/**
-	 * get all child items of an item from the legacy cache
-	 *
-	 * @param int $id
-	 * @return array
-	 */
-	function getChildren($id) {
-		$result = \OC_DB::executeAudited('SELECT * FROM `*PREFIX*fscache` WHERE `parent` = ?', array($id));
-		$data = $result->fetchAll();
-		foreach ($data as $i => $item) {
-			$data[$i]['etag'] = $this->getEtag($item['path'], $item['user']);
-		}
-		return $data;
-	}
-}
diff --git a/lib/private/files/cache/scanner.php b/lib/private/files/cache/scanner.php
index 92a4c01841b..79159724d16 100644
--- a/lib/private/files/cache/scanner.php
+++ b/lib/private/files/cache/scanner.php
@@ -155,7 +155,7 @@ class Scanner extends BasicEmitter {
 					}
 				}
 				if (!empty($newData)) {
-					$this->cache->put($file, $newData);
+					$data['fileid'] = $this->cache->put($file, $newData);
 					$this->emit('\OC\Files\Cache\Scanner', 'postScanFile', array($file, $this->storageId));
 					\OC_Hook::emit('\OC\Files\Cache\Scanner', 'post_scan_file', array('path' => $file, 'storage' => $this->storageId));
 				}
@@ -173,14 +173,16 @@ class Scanner extends BasicEmitter {
 	 * @param string $path
 	 * @param bool $recursive
 	 * @param int $reuse
-	 * @return int the size of the scanned folder or -1 if the size is unknown at this stage
+	 * @return array with the meta data of the scanned file or folder
 	 */
 	public function scan($path, $recursive = self::SCAN_RECURSIVE, $reuse = -1) {
 		if ($reuse === -1) {
 			$reuse = ($recursive === self::SCAN_SHALLOW) ? self::REUSE_ETAG | self::REUSE_SIZE : 0;
 		}
-		$this->scanFile($path, $reuse);
-		return $this->scanChildren($path, $recursive, $reuse);
+		$data = $this->scanFile($path, $reuse);
+		$size = $this->scanChildren($path, $recursive, $reuse);
+		$data['size'] = $size;
+		return $data;
 	}
 
 	/**
diff --git a/lib/private/files/cache/updater.php b/lib/private/files/cache/updater.php
index 7a45b9e9e96..199ce5dee78 100644
--- a/lib/private/files/cache/updater.php
+++ b/lib/private/files/cache/updater.php
@@ -38,8 +38,8 @@ class Updater {
 		if ($storage) {
 			$cache = $storage->getCache($internalPath);
 			$scanner = $storage->getScanner($internalPath);
-			$scanner->scan($internalPath, Scanner::SCAN_SHALLOW);
-			$cache->correctFolderSize($internalPath);
+			$data = $scanner->scan($internalPath, Scanner::SCAN_SHALLOW);
+			$cache->correctFolderSize($internalPath, $data);
 			self::correctFolder($path, $storage->filemtime($internalPath));
 			self::correctParentStorageMtime($storage, $internalPath);
 		}
@@ -119,6 +119,9 @@ class Updater {
 
 		if ($uid != \OCP\User::getUser()) {
 			$info = \OC\Files\Filesystem::getFileInfo($filename);
+			if (!$info) {
+				return array($uid, '/files/' . $filename);
+			}
 			$ownerView = new \OC\Files\View('/' . $uid . '/files');
 			$filename = $ownerView->getPath($info['fileid']);
 		}
@@ -150,7 +153,7 @@ class Updater {
 				$cache->update($id, array('mtime' => $time, 'etag' => $storage->getETag($internalPath)));
 				if ($realPath !== '') {
 					$realPath = dirname($realPath);
-					if($realPath === DIRECTORY_SEPARATOR ) {
+					if ($realPath === DIRECTORY_SEPARATOR) {
 						$realPath = "";
 					}
 					// check storage for parent in case we change the storage in this step
diff --git a/lib/private/files/cache/upgrade.php b/lib/private/files/cache/upgrade.php
deleted file mode 100644
index e3a46896cbf..00000000000
--- a/lib/private/files/cache/upgrade.php
+++ /dev/null
@@ -1,235 +0,0 @@
-<?php
-/**
- * Copyright (c) 2012 Robin Appelman <icewind@owncloud.com>
- * This file is licensed under the Affero General Public License version 3 or
- * later.
- * See the COPYING-README file.
- */
-
-namespace OC\Files\Cache;
-
-class Upgrade {
-	/**
-	 * @var Legacy $legacy
-	 */
-	private $legacy;
-
-	private $numericIds = array();
-
-	private $mimeTypeIds = array();
-
-	/**
-	 * @param Legacy $legacy
-	 */
-	public function __construct($legacy) {
-		$this->legacy = $legacy;
-	}
-
-	/**
-	 * Preform a upgrade a path and it's childs
-	 *
-	 * @param string $path
-	 * @param bool $mode
-	 */
-	function upgradePath($path, $mode = Scanner::SCAN_RECURSIVE) {
-		if (!$this->legacy->hasItems()) {
-			return;
-		}
-		\OC_Hook::emit('\OC\Files\Cache\Upgrade', 'migrate_path', $path);
-		if ($row = $this->legacy->get($path)) {
-			$data = $this->getNewData($row);
-			if ($data) {
-				$this->insert($data);
-				$this->upgradeChilds($data['id'], $mode);
-			}
-		}
-	}
-
-	/**
-	 * upgrade all child elements of an item
-	 *
-	 * @param int $id
-	 * @param bool $mode
-	 */
-	function upgradeChilds($id, $mode = Scanner::SCAN_RECURSIVE) {
-		$children = $this->legacy->getChildren($id);
-		foreach ($children as $child) {
-			$childData = $this->getNewData($child);
-			\OC_Hook::emit('\OC\Files\Cache\Upgrade', 'migrate_path', $child['path']);
-			if ($childData) {
-				$this->insert($childData);
-				if ($mode == Scanner::SCAN_RECURSIVE) {
-					$this->upgradeChilds($child['id']);
-				}
-			}
-		}
-	}
-
-	/**
-	 * insert data into the new cache
-	 *
-	 * @param array $data the data for the new cache
-	 */
-	function insert($data) {
-		static $insertQuery = null;
-		if(is_null($insertQuery)) {
-			$insertQuery = \OC_DB::prepare('INSERT INTO `*PREFIX*filecache`
-				( `fileid`, `storage`, `path`, `path_hash`, `parent`, `name`, `mimetype`, `mimepart`, `size`, `mtime`, `encrypted`, `etag` )
-				VALUES(?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?, ?)');
-		}
-		if (!$this->inCache($data['storage'], $data['path_hash'], $data['id'])) {
-			\OC_DB::executeAudited($insertQuery, array($data['id'], $data['storage'],
-				$data['path'], $data['path_hash'], $data['parent'], $data['name'],
-				$data['mimetype'], $data['mimepart'], $data['size'], $data['mtime'], $data['encrypted'], $data['etag']));
-		}
-	}
-
-	/**
-	 * check if an item is already in the new cache
-	 *
-	 * @param string $storage
-	 * @param string $pathHash
-	 * @param string $id
-	 * @return bool
-	 */
-	function inCache($storage, $pathHash, $id) {
-		static $query = null;
-		if(is_null($query)) {
-			$query = \OC_DB::prepare('SELECT `fileid` FROM `*PREFIX*filecache` WHERE (`storage` = ? AND `path_hash` = ?) OR `fileid` = ?');
-		}
-		$result = \OC_DB::executeAudited($query, array($storage, $pathHash, $id));
-		return (bool)$result->fetchRow();
-	}
-
-	/**
-	 * get the new data array from the old one
-	 *
-	 * @param array $data the data from the old cache
-	 * Example data array
-	 * Array
-	 *	(
-	 *		[id] => 418
-	 *		[path] => /tina/files/picture.jpg		//relative to datadir
-	 *		[path_hash] => 66d4547e372888deed80b24fec9b192b
-	 *		[parent] => 234
-	 *		[name] => picture.jpg
-	 *		[user] => tina
-	 *		[size] => 1265283
-	 *		[ctime] => 1363909709
-	 *		[mtime] => 1363909709
-	 *		[mimetype] => image/jpeg
-	 *		[mimepart] => image
-	 *		[encrypted] => 0
-	 *		[versioned] => 0
-	 *		[writable] => 1
-	 *	)
-	 *
-	 * @return array
-	 */
-	function getNewData($data) {
-		//Make sure there is a path, otherwise we can do nothing.
-		if(!isset($data['path'])) {
-			return false;
-		}
-		$newData = $data;
-		/**
-		 * @var \OC\Files\Storage\Storage $storage
-		 * @var string $internalPath;
-		 */
-		list($storage, $internalPath) = \OC\Files\Filesystem::resolvePath($data['path']);
-		if ($storage) {
-			$newData['etag'] = $data['etag'];
-			$newData['path_hash'] = md5($internalPath);
-			$newData['path'] = $internalPath;
-			$newData['storage'] = $this->getNumericId($storage);
-			$newData['parent'] = ($internalPath === '') ? -1 : $data['parent'];
-			$newData['permissions'] = ($data['writable']) ? \OCP\PERMISSION_ALL : \OCP\PERMISSION_READ;
-			$newData['storage_object'] = $storage;
-			$newData['mimetype'] = $this->getMimetypeId($newData['mimetype'], $storage);
-			$newData['mimepart'] = $this->getMimetypeId($newData['mimepart'], $storage);
-			return $newData;
-		} else {
-			\OC_Log::write('core', 'Unable to migrate data from old cache for '.$data['path'].' because the storage was not found', \OC_Log::ERROR);
-			return false;
-		}
-	}
-
-	/**
-	 * get the numeric storage id
-	 *
-	 * @param \OC\Files\Storage\Storage $storage
-	 * @return int
-	 */
-	function getNumericId($storage) {
-		$storageId = $storage->getId();
-		if (!isset($this->numericIds[$storageId])) {
-			$cache = $storage->getCache();
-			$this->numericIds[$storageId] = $cache->getNumericStorageId();
-		}
-		return $this->numericIds[$storageId];
-	}
-
-	/**
-	 * get the numeric id for a mimetype
-	 *
-	 * @param string $mimetype
-	 * @param \OC\Files\Storage\Storage $storage
-	 * @return int
-	 */
-	function getMimetypeId($mimetype, $storage) {
-		if (!isset($this->mimeTypeIds[$mimetype])) {
-			$cache = new Cache($storage);
-			$this->mimeTypeIds[$mimetype] = $cache->getMimetypeId($mimetype);
-		}
-		return $this->mimeTypeIds[$mimetype];
-	}
-
-	/**
-	 * check if a cache upgrade is required for $user
-	 *
-	 * @param string $user
-	 * @return bool
-	 */
-	static function needUpgrade($user) {
-		$cacheVersion = (int)\OCP\Config::getUserValue($user, 'files', 'cache_version', 4);
-		if ($cacheVersion < 5) {
-			$legacy = new \OC\Files\Cache\Legacy($user);
-			if ($legacy->hasItems()) {
-				return true;
-			}
-			self::upgradeDone($user);
-		}
-
-		return false;
-	}
-
-	/**
-	 * mark the filecache as upgrade
-	 *
-	 * @param string $user
-	 */
-	static function upgradeDone($user) {
-		\OCP\Config::setUserValue($user, 'files', 'cache_version', 5);
-	}
-
-	/**
-	 * Does a "silent" upgrade, i.e. without an Event-Source as triggered
-	 * on User-Login via Ajax. This method is called within the regular
-	 * ownCloud upgrade.
-	 *
-	 * @param string $user a User ID
-	 */
-	public static function doSilentUpgrade($user) {
-		if(!self::needUpgrade($user)) {
-			return;
-		}
-		$legacy = new \OC\Files\Cache\Legacy($user);
-		if ($legacy->hasItems()) {
-			\OC_DB::beginTransaction();
-			$upgrade = new \OC\Files\Cache\Upgrade($legacy);
-			$upgrade->upgradePath('/' . $user . '/files');
-			\OC_DB::commit();
-		}
-		\OC\Files\Cache\Upgrade::upgradeDone($user);
-	}
-}
diff --git a/lib/private/files/fileinfo.php b/lib/private/files/fileinfo.php
index 2dbdd80a26b..d6940f50bf1 100644
--- a/lib/private/files/fileinfo.php
+++ b/lib/private/files/fileinfo.php
@@ -53,7 +53,13 @@ class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
 	}
 
 	public function offsetGet($offset) {
-		return $this->data[$offset];
+		if ($offset === 'type') {
+			return $this->getType();
+		} elseif (isset($this->data[$offset])) {
+			return $this->data[$offset];
+		} else {
+			return null;
+		}
 	}
 
 	/**
@@ -144,10 +150,14 @@ class FileInfo implements \OCP\Files\FileInfo, \ArrayAccess {
 	 * @return \OCP\Files\FileInfo::TYPE_FILE | \OCP\Files\FileInfo::TYPE_FOLDER
 	 */
 	public function getType() {
-		return $this->data['type'];
+		if (isset($this->data['type'])) {
+			return $this->data['type'];
+		} else {
+			return $this->getMimetype() === 'httpd/unix-directory' ? self::TYPE_FOLDER : self::TYPE_FILE;
+		}
 	}
 
-	public function getData(){
+	public function getData() {
 		return $this->data;
 	}
 
diff --git a/lib/private/files/filesystem.php b/lib/private/files/filesystem.php
index 7f7b6f7f468..7e27650c557 100644
--- a/lib/private/files/filesystem.php
+++ b/lib/private/files/filesystem.php
@@ -320,79 +320,34 @@ class Filesystem {
 		else {
 			self::mount('\OC\Files\Storage\Local', array('datadir' => $root), $user);
 		}
-		$datadir = \OC_Config::getValue("datadirectory", \OC::$SERVERROOT . "/data");
-		$mount_file = \OC_Config::getValue("mount_file", $datadir . "/mount.json");
-
-		//move config file to it's new position
-		if (is_file(\OC::$SERVERROOT . '/config/mount.json')) {
-			rename(\OC::$SERVERROOT . '/config/mount.json', $mount_file);
-		}
-		// Load system mount points
-		if (is_file(\OC::$SERVERROOT . '/config/mount.php') or is_file($mount_file)) {
-			if (is_file($mount_file)) {
-				$mountConfig = json_decode(file_get_contents($mount_file), true);
-			} elseif (is_file(\OC::$SERVERROOT . '/config/mount.php')) {
-				$mountConfig = $parser->parsePHP(file_get_contents(\OC::$SERVERROOT . '/config/mount.php'));
-			}
-			if (isset($mountConfig['global'])) {
-				foreach ($mountConfig['global'] as $mountPoint => $options) {
-					self::mount($options['class'], $options['options'], $mountPoint);
-				}
-			}
-			if (isset($mountConfig['group'])) {
-				foreach ($mountConfig['group'] as $group => $mounts) {
-					if (\OC_Group::inGroup($user, $group)) {
-						foreach ($mounts as $mountPoint => $options) {
-							$mountPoint = self::setUserVars($user, $mountPoint);
-							foreach ($options as &$option) {
-								$option = self::setUserVars($user, $option);
-							}
-							self::mount($options['class'], $options['options'], $mountPoint);
-						}
-					}
-				}
-			}
-			if (isset($mountConfig['user'])) {
-				foreach ($mountConfig['user'] as $mountUser => $mounts) {
-					if ($mountUser === 'all' or strtolower($mountUser) === strtolower($user)) {
-						foreach ($mounts as $mountPoint => $options) {
-							$mountPoint = self::setUserVars($user, $mountPoint);
-							foreach ($options as &$option) {
-								$option = self::setUserVars($user, $option);
-							}
-							self::mount($options['class'], $options['options'], $mountPoint);
-						}
-					}
-				}
-			}
-		}
-		// Load personal mount points
-		if (is_file($root . '/mount.php') or is_file($root . '/mount.json')) {
-			if (is_file($root . '/mount.json')) {
-				$mountConfig = json_decode(file_get_contents($root . '/mount.json'), true);
-			} elseif (is_file($root . '/mount.php')) {
-				$mountConfig = $parser->parsePHP(file_get_contents($root . '/mount.php'));
-			}
-			if (isset($mountConfig['user'][$user])) {
-				foreach ($mountConfig['user'][$user] as $mountPoint => $options) {
-					self::mount($options['class'], $options['options'], $mountPoint);
-				}
-			}
-		}
+
+		self::mountCacheDir($user);
 
 		// Chance to mount for other storages
 		\OC_Hook::emit('OC_Filesystem', 'post_initMountPoints', array('user' => $user, 'user_dir' => $root));
 	}
 
 	/**
-	 * fill in the correct values for $user
-	 *
-	 * @param string $user
-	 * @param string $input
-	 * @return string
+	 * Mounts the cache directory
+	 * @param string $user user name
 	 */
-	private static function setUserVars($user, $input) {
-		return str_replace('$user', $user, $input);
+	private static function mountCacheDir($user) {
+		$cacheBaseDir = \OC_Config::getValue('cache_path', '');
+		if ($cacheBaseDir === '') {
+			// use local cache dir relative to the user's home
+			$subdir = 'cache';
+			$view = new \OC\Files\View('/' . $user);
+			if(!$view->file_exists($subdir)) {
+				$view->mkdir($subdir);
+			}
+		} else {
+			$cacheDir = rtrim($cacheBaseDir, '/') . '/' . $user;
+			if (!file_exists($cacheDir)) {
+				mkdir($cacheDir, 0770, true);
+			}
+			// mount external cache dir to "/$user/cache" mount point
+			self::mount('\OC\Files\Storage\Local', array('datadir' => $cacheDir), '/' . $user . '/cache');
+		}
 	}
 
 	/**
@@ -761,7 +716,7 @@ class Filesystem {
 	 *
 	 * @param string $directory path under datadirectory
 	 * @param string $mimetype_filter limit returned content to this mimetype or mimepart
-	 * @return array
+	 * @return \OC\Files\FileInfo[]
 	 */
 	public static function getDirectoryContent($directory, $mimetype_filter = '') {
 		return self::$defaultInstance->getDirectoryContent($directory, $mimetype_filter);
diff --git a/lib/private/files/storage/common.php b/lib/private/files/storage/common.php
index 9e826dd6192..2b697141515 100644
--- a/lib/private/files/storage/common.php
+++ b/lib/private/files/storage/common.php
@@ -27,6 +27,11 @@ abstract class Common implements \OC\Files\Storage\Storage {
 	protected $watcher;
 	protected $storageCache;
 
+	/**
+	 * @var string[]
+	 */
+	protected $cachedFiles = array();
+
 	public function __construct($parameters) {
 	}
 
@@ -122,11 +127,13 @@ abstract class Common implements \OC\Files\Storage\Storage {
 
 	public function file_put_contents($path, $data) {
 		$handle = $this->fopen($path, "w");
+		$this->removeCachedFile($path);
 		return fwrite($handle, $data);
 	}
 
 	public function rename($path1, $path2) {
 		if ($this->copy($path1, $path2)) {
+			$this->removeCachedFile($path1);
 			return $this->unlink($path1);
 		} else {
 			return false;
@@ -137,6 +144,7 @@ abstract class Common implements \OC\Files\Storage\Storage {
 		$source = $this->fopen($path1, 'r');
 		$target = $this->fopen($path2, 'w');
 		list($count, $result) = \OC_Helper::streamCopy($source, $target);
+		$this->removeCachedFile($path2);
 		return $result;
 	}
 
@@ -152,8 +160,7 @@ abstract class Common implements \OC\Files\Storage\Storage {
 
 	public function hash($type, $path, $raw = false) {
 		$tmpFile = $this->getLocalFile($path);
-		$hash = hash($type, $tmpFile, $raw);
-		unlink($tmpFile);
+		$hash = hash_file($type, $tmpFile, $raw);
 		return $hash;
 	}
 
@@ -162,13 +169,14 @@ abstract class Common implements \OC\Files\Storage\Storage {
 	}
 
 	public function getLocalFile($path) {
-		return $this->toTmpFile($path);
+		return $this->getCachedFile($path);
 	}
 
 	/**
 	 * @param string $path
+	 * @return string
 	 */
-	private function toTmpFile($path) { //no longer in the storage api, still useful here
+	protected function toTmpFile($path) { //no longer in the storage api, still useful here
 		$source = $this->fopen($path, 'r');
 		if (!$source) {
 			return false;
@@ -352,4 +360,15 @@ abstract class Common implements \OC\Files\Storage\Storage {
 		// default, which is not local
 		return false;
 	}
+
+	protected function getCachedFile($path) {
+		if (!isset($this->cachedFiles[$path])) {
+			$this->cachedFiles[$path] = $this->toTmpFile($path);
+		}
+		return $this->cachedFiles[$path];
+	}
+
+	protected function removeCachedFile($path) {
+		unset($this->cachedFiles[$path]);
+	}
 }
diff --git a/lib/private/files/storage/local.php b/lib/private/files/storage/local.php
index a62230bdba5..571bf7f97c1 100644
--- a/lib/private/files/storage/local.php
+++ b/lib/private/files/storage/local.php
@@ -35,7 +35,7 @@ if (\OC_Util::runningOnWindows()) {
 		}
 
 		public function mkdir($path) {
-			return @mkdir($this->datadir . $path);
+			return @mkdir($this->datadir . $path, 0777, true);
 		}
 
 		public function rmdir($path) {
@@ -256,7 +256,7 @@ if (\OC_Util::runningOnWindows()) {
 			return 0;
 		}
 
-		public function hash($path, $type, $raw = false) {
+		public function hash($type, $path, $raw = false) {
 			return hash_file($type, $this->datadir . $path, $raw);
 		}
 
diff --git a/lib/private/files/storage/mappedlocal.php b/lib/private/files/storage/mappedlocal.php
index 1bab3489a28..94ee28ca763 100644
--- a/lib/private/files/storage/mappedlocal.php
+++ b/lib/private/files/storage/mappedlocal.php
@@ -31,7 +31,7 @@ class MappedLocal extends \OC\Files\Storage\Common{
 		return 'local::'.$this->datadir;
 	}
 	public function mkdir($path) {
-		return @mkdir($this->buildPath($path));
+		return @mkdir($this->buildPath($path), 0777, true);
 	}
 	public function rmdir($path) {
 		try {
@@ -276,7 +276,7 @@ class MappedLocal extends \OC\Files\Storage\Common{
 		return 0;
 	}
 
-	public function hash($path, $type, $raw=false) {
+	public function hash($type, $path, $raw=false) {
 		return hash_file($type, $this->buildPath($path), $raw);
 	}
 
diff --git a/lib/private/files/storage/wrapper/quota.php b/lib/private/files/storage/wrapper/quota.php
index 26c952e694a..a878b2c5cf6 100644
--- a/lib/private/files/storage/wrapper/quota.php
+++ b/lib/private/files/storage/wrapper/quota.php
@@ -30,12 +30,24 @@ class Quota extends Wrapper {
 	}
 
 	/**
+	 * @return quota value
+	 */
+	public function getQuota() {
+		return $this->quota;
+	}
+
+	/**
 	 * @param string $path
 	 */
 	protected function getSize($path) {
 		$cache = $this->getCache();
 		$data = $cache->get($path);
 		if (is_array($data) and isset($data['size'])) {
+			if (isset($data['unencrypted_size'])
+				&& $data['unencrypted_size'] > 0
+			) {
+				return $data['unencrypted_size'];
+			}
 			return $data['size'];
 		} else {
 			return \OC\Files\SPACE_NOT_COMPUTED;
@@ -57,7 +69,14 @@ class Quota extends Wrapper {
 				return \OC\Files\SPACE_NOT_COMPUTED;
 			} else {
 				$free = $this->storage->free_space($path);
-				return min($free, (max($this->quota - $used, 0)));
+				$quotaFree = max($this->quota - $used, 0);
+				// if free space is known
+				if ($free >= 0) {
+					$free = min($free, $quotaFree);
+				} else {
+					$free = $quotaFree;
+				}
+				return $free;
 			}
 		}
 	}
diff --git a/lib/private/files/view.php b/lib/private/files/view.php
index 2dbbf5b88c9..f06c2fcd66c 100644
--- a/lib/private/files/view.php
+++ b/lib/private/files/view.php
@@ -25,6 +25,8 @@
 
 namespace OC\Files;
 
+use OC\Files\Cache\Updater;
+
 class View {
 	private $fakeRoot = '';
 	private $internal_path_cache = array();
@@ -308,6 +310,9 @@ class View {
 					fclose($target);
 					fclose($data);
 					if ($this->shouldEmitHooks($path) && $result !== false) {
+						Updater::writeHook(array(
+							'path' => $this->getHookPath($path)
+						));
 						if (!$exists) {
 							\OC_Hook::emit(
 								Filesystem::CLASSNAME,
@@ -433,6 +438,7 @@ class View {
 				}
 				if ($this->shouldEmitHooks() && (Cache\Scanner::isPartialFile($path1) && !Cache\Scanner::isPartialFile($path2)) && $result !== false) {
 					// if it was a rename from a part file to a regular file it was a write and not a rename operation
+					Updater::writeHook(array('path' => $this->getHookPath($path2)));
 					\OC_Hook::emit(
 						Filesystem::CLASSNAME,
 						Filesystem::signal_post_write,
@@ -441,6 +447,10 @@ class View {
 						)
 					);
 				} elseif ($this->shouldEmitHooks() && $result !== false) {
+					Updater::renameHook(array(
+						'oldpath' => $this->getHookPath($path1),
+						'newpath' => $this->getHookPath($path2)
+					));
 					\OC_Hook::emit(
 						Filesystem::CLASSNAME,
 						Filesystem::signal_post_rename,
@@ -741,7 +751,10 @@ class View {
 	}
 
 	/**
+	 * @param string[] $hooks
 	 * @param string $path
+	 * @param bool $post
+	 * @return bool
 	 */
 	private function runHooks($hooks, $path, $post = false) {
 		$path = $this->getHookPath($path);
@@ -749,6 +762,16 @@ class View {
 		$run = true;
 		if ($this->shouldEmitHooks($path)) {
 			foreach ($hooks as $hook) {
+				// manually triger updater hooks to ensure they are called first
+				if ($post) {
+					if ($hook == 'write') {
+						Updater::writeHook(array('path' => $path));
+					} elseif ($hook == 'touch') {
+						Updater::touchHook(array('path' => $path));
+					} else if ($hook == 'delete') {
+						Updater::deleteHook(array('path' => $path));
+					}
+				}
 				if ($hook != 'read') {
 					\OC_Hook::emit(
 						Filesystem::CLASSNAME,
@@ -820,7 +843,7 @@ class View {
 				$data = $cache->get($internalPath);
 			}
 
-			if ($data and $data['fileid']) {
+			if ($data and isset($data['fileid'])) {
 				if ($includeMountPoints and $data['mimetype'] === 'httpd/unix-directory') {
 					//add the sizes of other mountpoints to the folder
 					$mountPoints = Filesystem::getMountPoints($path);
diff --git a/lib/private/forbiddenexception.php b/lib/private/forbiddenexception.php
new file mode 100644
index 00000000000..14a4cd14984
--- /dev/null
+++ b/lib/private/forbiddenexception.php
@@ -0,0 +1,16 @@
+<?php
+/**
+ * Copyright (c) 2014 Vincent Petry <pvince81@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC;
+
+/**
+ * Exception thrown whenever access to a resource has
+ * been forbidden or whenever a user isn't authenticated.
+ */
+class ForbiddenException extends \Exception {
+}
diff --git a/lib/private/helper.php b/lib/private/helper.php
index d8c4650f666..d7ac0b5f4fa 100644
--- a/lib/private/helper.php
+++ b/lib/private/helper.php
@@ -78,8 +78,7 @@ class OC_Helper {
 	 * Returns a absolute url to the given app and file.
 	 */
 	public static function linkToAbsolute($app, $file, $args = array()) {
-		$urlLinkTo = self::linkTo($app, $file, $args);
-		return self::makeURLAbsolute($urlLinkTo);
+		return self::linkTo($app, $file, $args);
 	}
 
 	/**
@@ -308,7 +307,7 @@ class OC_Helper {
 
 	/**
 	 * @brief Make a computer file size
-	 * @param string $str file size in a fancy format
+	 * @param string $str file size in human readable format
 	 * @return int a file size in bytes
 	 *
 	 * Makes 2kB to 2048.
@@ -338,41 +337,12 @@ class OC_Helper {
 			$bytes *= $bytes_array[$matches[1]];
 		}
 
-		$bytes = round($bytes, 2);
+		$bytes = round($bytes);
 
 		return $bytes;
 	}
 
 	/**
-	 * @brief Recursive editing of file permissions
-	 * @param string $path path to file or folder
-	 * @param int $filemode unix style file permissions
-	 * @return bool
-	 */
-	static function chmodr($path, $filemode) {
-		if (!is_dir($path))
-			return chmod($path, $filemode);
-		$dh = opendir($path);
-		if(is_resource($dh)) {
-			while (($file = readdir($dh)) !== false) {
-				if ($file != '.' && $file != '..') {
-					$fullpath = $path . '/' . $file;
-					if (is_link($fullpath))
-						return false;
-					elseif (!is_dir($fullpath) && !@chmod($fullpath, $filemode))
-						return false; elseif (!self::chmodr($fullpath, $filemode))
-						return false;
-				}
-			}
-			closedir($dh);
-		}
-		if (@chmod($path, $filemode))
-			return true;
-		else
-			return false;
-	}
-
-	/**
 	 * @brief Recursive copying of folders
 	 * @param string $src source folder
 	 * @param string $dest target folder
@@ -839,7 +809,7 @@ class OC_Helper {
 	 * @return int number of bytes representing
 	 */
 	public static function maxUploadFilesize($dir, $freeSpace = null) {
-		if (is_null($freeSpace)){
+		if (is_null($freeSpace) || $freeSpace < 0){
 			$freeSpace = self::freeSpace($dir);
 		}
 		return min($freeSpace, self::uploadLimit());
@@ -914,13 +884,22 @@ class OC_Helper {
 		if ($used < 0) {
 			$used = 0;
 		}
-		$free = \OC\Files\Filesystem::free_space($path);
+		$quota = 0;
+		// TODO: need a better way to get total space from storage
+		$storage = $rootInfo->getStorage();
+		if ($storage instanceof \OC\Files\Storage\Wrapper\Quota) {
+			$quota = $storage->getQuota();
+		}
+		$free = $storage->free_space('');
 		if ($free >= 0) {
 			$total = $free + $used;
 		} else {
 			$total = $free; //either unknown or unlimited
 		}
 		if ($total > 0) {
+			if ($quota > 0 && $total > $quota) {
+				$total = $quota;
+			}
 			// prevent division by zero or error codes (negative values)
 			$relative = round(($used / $total) * 10000) / 100;
 		} else {
diff --git a/lib/private/image.php b/lib/private/image.php
index e0397ec8a00..f1b8acc41b7 100644
--- a/lib/private/image.php
+++ b/lib/private/image.php
@@ -35,24 +35,24 @@ class OC_Image {
 	/**
 	* @brief Get mime type for an image file.
 	* @param string|null $filePath The path to a local image file.
-	* @returns string The mime type if the it could be determined, otherwise an empty string.
+	* @return string The mime type if the it could be determined, otherwise an empty string.
 	*/
 	static public function getMimeTypeForFile($filePath) {
 		// exif_imagetype throws "read error!" if file is less than 12 byte
 		if (filesize($filePath) > 11) {
 			$imageType = exif_imagetype($filePath);
-		}
-		else {
+		} else {
 			$imageType = false;
 		}
 		return $imageType ? image_type_to_mime_type($imageType) : '';
 	}
 
 	/**
-	* @brief Constructor.
-	* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function.
-	* @returns bool False on error
-	*/
+	 * @brief Constructor.
+	 * @param resource|string $imageref The path to a local file, a base64 encoded string or a resource created by
+	 * an imagecreate* function.
+	 * @return \OC_Image False on error
+	 */
 	public function __construct($imageRef = null) {
 		//OC_Log::write('core',__METHOD__.'(): start', OC_Log::DEBUG);
 		if(!extension_loaded('gd') || !function_exists('gd_info')) {
@@ -71,7 +71,7 @@ class OC_Image {
 
 	/**
 	* @brief Determine whether the object contains an image resource.
-	* @returns bool
+	* @return bool
 	*/
 	public function valid() { // apparently you can't name a method 'empty'...
 		return is_resource($this->resource);
@@ -79,7 +79,7 @@ class OC_Image {
 
 	/**
 	* @brief Returns the MIME type of the image or an empty string if no image is loaded.
-	* @returns int
+	* @return int
 	*/
 	public function mimeType() {
 		return $this->valid() ? $this->mimeType : '';
@@ -87,7 +87,7 @@ class OC_Image {
 
 	/**
 	* @brief Returns the width of the image or -1 if no image is loaded.
-	* @returns int
+	* @return int
 	*/
 	public function width() {
 		return $this->valid() ? imagesx($this->resource) : -1;
@@ -95,7 +95,7 @@ class OC_Image {
 
 	/**
 	* @brief Returns the height of the image or -1 if no image is loaded.
-	* @returns int
+	* @return int
 	*/
 	public function height() {
 		return $this->valid() ? imagesy($this->resource) : -1;
@@ -103,7 +103,7 @@ class OC_Image {
 
 	/**
 	* @brief Returns the width when the image orientation is top-left.
-	* @returns int
+	* @return int
 	*/
 	public function widthTopLeft() {
 		$o = $this->getOrientation();
@@ -115,20 +115,18 @@ class OC_Image {
 			case 3:
 			case 4: // Not tested
 				return $this->width();
-				break;
 			case 5: // Not tested
 			case 6:
 			case 7: // Not tested
 			case 8:
 				return $this->height();
-				break;
 		}
 		return $this->width();
 	}
 
 	/**
 	* @brief Returns the height when the image orientation is top-left.
-	* @returns int
+	* @return int
 	*/
 	public function heightTopLeft() {
 		$o = $this->getOrientation();
@@ -140,46 +138,56 @@ class OC_Image {
 			case 3:
 			case 4: // Not tested
 				return $this->height();
-				break;
 			case 5: // Not tested
 			case 6:
 			case 7: // Not tested
 			case 8:
 				return $this->width();
-				break;
 		}
 		return $this->height();
 	}
 
 	/**
-	* @brief Outputs the image.
-	* @returns bool
-	*/
-	public function show() {
-		header('Content-Type: '.$this->mimeType());
-		return $this->_output();
+	 * @brief Outputs the image.
+	 * @param string $mimeType
+	 * @return bool
+	 */
+	public function show($mimeType=null) {
+		if($mimeType === null) {
+			$mimeType = $this->mimeType();
+		}
+		header('Content-Type: '.$mimeType);
+		return $this->_output(null, $mimeType);
 	}
 
 	/**
-	* @brief Saves the image.
-	* @returns bool
-	* @param string $filePath
-	*/
+	 * @brief Saves the image.
+	 * @param string $filePath
+	 * @param string $mimeType
+	 * @return bool
+	 */
 
-	public function save($filePath=null) {
+	public function save($filePath=null, $mimeType=null) {
+		if($mimeType === null) {
+			$mimeType = $this->mimeType();
+		}
 		if($filePath === null && $this->filePath === null) {
 			OC_Log::write('core', __METHOD__.'(): called with no path.', OC_Log::ERROR);
 			return false;
 		} elseif($filePath === null && $this->filePath !== null) {
 			$filePath = $this->filePath;
 		}
-		return $this->_output($filePath);
+		return $this->_output($filePath, $mimeType);
 	}
 
 	/**
-	* @brief Outputs/saves the image.
-	*/
-	private function _output($filePath=null) {
+	 * @brief Outputs/saves the image.
+	 * @param string $filePath
+	 * @param string $mimeType
+	 * @return bool
+	 * @throws Exception
+	 */
+	private function _output($filePath=null, $mimeType=null) {
 		if($filePath) {
 			if (!file_exists(dirname($filePath)))
 				mkdir(dirname($filePath), 0777, true);
@@ -197,8 +205,30 @@ class OC_Image {
 			return false;
 		}
 
-		$retVal = false;
-		switch($this->imageType) {
+		$imageType = $this->imageType;
+		if($mimeType !== null) {
+			switch($mimeType) {
+				case 'image/gif':
+					$imageType = IMAGETYPE_GIF;
+					break;
+				case 'image/jpeg':
+					$imageType = IMAGETYPE_JPEG;
+					break;
+				case 'image/png':
+					$imageType = IMAGETYPE_PNG;
+					break;
+				case 'image/x-xbitmap':
+					$imageType = IMAGETYPE_XBM;
+					break;
+				case 'image/bmp':
+					$imageType = IMAGETYPE_BMP;
+					break;
+				default:
+					throw new Exception('\OC_Image::_output(): "' . $mimeType . '" is not supported when forcing a specific output format');
+			}
+		}
+
+		switch($imageType) {
 			case IMAGETYPE_GIF:
 				$retVal = imagegif($this->resource, $filePath);
 				break;
@@ -209,7 +239,12 @@ class OC_Image {
 				$retVal = imagepng($this->resource, $filePath);
 				break;
 			case IMAGETYPE_XBM:
-				$retVal = imagexbm($this->resource, $filePath);
+				if (function_exists('imagexbm')) {
+					$retVal = imagexbm($this->resource, $filePath);
+				} else {
+					throw new Exception('\OC_Image::_output(): imagexbm() is not supported.');
+				}
+
 				break;
 			case IMAGETYPE_WBMP:
 				$retVal = imagewbmp($this->resource, $filePath);
@@ -231,14 +266,14 @@ class OC_Image {
 	}
 
 	/**
-	* @returns resource Returns the image resource in any.
+	* @return resource Returns the image resource in any.
 	*/
 	public function resource() {
 		return $this->resource;
 	}
 
 	/**
-	* @returns Returns the raw image data.
+	* @return string Returns the raw image data.
 	*/
 	function data() {
 		ob_start();
@@ -264,8 +299,8 @@ class OC_Image {
 	}
 
 	/**
-	* @returns Returns a base64 encoded string suitable for embedding in a VCard.
-	*/
+	 * @return string - base64 encoded, which is suitable for embedding in a VCard.
+	 */
 	function __toString() {
 		return base64_encode($this->data());
 	}
@@ -273,7 +308,7 @@ class OC_Image {
 	/**
 	* (I'm open for suggestions on better method name ;)
 	* @brief Get the orientation based on EXIF data.
-	* @returns The orientation or -1 if no EXIF data is available.
+	* @return int The orientation or -1 if no EXIF data is available.
 	*/
 	public function getOrientation() {
 		if(!is_callable('exif_read_data')) {
@@ -301,53 +336,43 @@ class OC_Image {
 	/**
 	* (I'm open for suggestions on better method name ;)
 	* @brief Fixes orientation based on EXIF data.
-	* @returns bool.
+	* @return bool.
 	*/
 	public function fixOrientation() {
 		$o = $this->getOrientation();
 		OC_Log::write('core', 'OC_Image->fixOrientation() Orientation: '.$o, OC_Log::DEBUG);
 		$rotate = 0;
-		$flip = false;
 		switch($o) {
 			case -1:
 				return false; //Nothing to fix
-				break;
 			case 1:
 				$rotate = 0;
-				$flip = false;
 				break;
 			case 2: // Not tested
 				$rotate = 0;
-				$flip = true;
 				break;
 			case 3:
 				$rotate = 180;
-				$flip = false;
 				break;
 			case 4: // Not tested
 				$rotate = 180;
-				$flip = true;
 				break;
 			case 5: // Not tested
 				$rotate = 90;
-				$flip = true;
 				break;
 			case 6:
 				//$rotate = 90;
 				$rotate = 270;
-				$flip = false;
 				break;
 			case 7: // Not tested
 				$rotate = 270;
-				$flip = true;
 				break;
 			case 8:
 				$rotate = 90;
-				$flip = false;
 				break;
 		}
 		if($rotate) {
-			$res = imagerotate($this->resource, $rotate, -1);
+			$res = imagerotate($this->resource, $rotate, 0);
 			if($res) {
 				if(imagealphablending($res, true)) {
 					if(imagesavealpha($res, true)) {
@@ -367,13 +392,14 @@ class OC_Image {
 				return false;
 			}
 		}
+		return false;
 	}
 
 	/**
-	* @brief Loads an image from a local file, a base64 encoded string or a resource created by an imagecreate* function.
-	* @param $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function or a file resource (file handle	).
-	* @returns An image resource or false on error
-	*/
+	 * @brief Loads an image from a local file, a base64 encoded string or a resource created by an imagecreate* function.
+	 * @param resource|string $imageref The path to a local file, a base64 encoded string or a resource created by an imagecreate* function or a file resource (file handle    ).
+	 * @return resource|false An image resource or false on error
+	 */
 	public function load($imageRef) {
 		if(is_resource($imageRef)) {
 			if(get_resource_type($imageRef) == 'gd') {
@@ -382,10 +408,10 @@ class OC_Image {
 			} elseif(in_array(get_resource_type($imageRef), array('file', 'stream'))) {
 				return $this->loadFromFileHandle($imageRef);
 			}
-		} elseif($this->loadFromFile($imageRef) !== false) {
-			return $this->resource;
 		} elseif($this->loadFromBase64($imageRef) !== false) {
 			return $this->resource;
+		} elseif($this->loadFromFile($imageRef) !== false) {
+			return $this->resource;
 		} elseif($this->loadFromData($imageRef) !== false) {
 			return $this->resource;
 		} else {
@@ -398,7 +424,7 @@ class OC_Image {
 	* @brief Loads an image from an open file handle.
 	* It is the responsibility of the caller to position the pointer at the correct place and to close the handle again.
 	* @param resource $handle
-	* @returns An image resource or false on error
+	* @return An image resource or false on error
 	*/
 	public function loadFromFileHandle($handle) {
 		OC_Log::write('core', __METHOD__.'(): Trying', OC_Log::DEBUG);
@@ -410,13 +436,12 @@ class OC_Image {
 
 	/**
 	* @brief Loads an image from a local file.
-	* @param $imagePath The path to a local file.
-	* @returns An image resource or false on error
+	* @param bool|string $imagePath The path to a local file.
+	* @return bool|resource An image resource or false on error
 	*/
 	public function loadFromFile($imagePath=false) {
 		// exif_imagetype throws "read error!" if file is less than 12 byte
 		if(!@is_file($imagePath) || !file_exists($imagePath) || filesize($imagePath) < 12 || !is_readable($imagePath)) {
-			// Debug output disabled because this method is tried before loadFromBase64?
 			OC_Log::write('core', 'OC_Image->loadFromFile, couldn\'t load: ' . (string) urlencode($imagePath), OC_Log::DEBUG);
 			return false;
 		}
@@ -512,8 +537,8 @@ class OC_Image {
 
 	/**
 	* @brief Loads an image from a string of data.
-	* @param $str A string of image data as read from a file.
-	* @returns An image resource or false on error
+	* @param string $str A string of image data as read from a file.
+	* @return bool|resource An image resource or false on error
 	*/
 	public function loadFromData($str) {
 		if(is_resource($str)) {
@@ -537,8 +562,8 @@ class OC_Image {
 
 	/**
 	* @brief Loads an image from a base64 encoded string.
-	* @param $str A string base64 encoded string of image data.
-	* @returns An image resource or false on error
+	* @param string $str A string base64 encoded string of image data.
+	* @return bool|resource An image resource or false on error
 	*/
 	public function loadFromBase64($str) {
 		if(!is_string($str)) {
@@ -567,7 +592,7 @@ class OC_Image {
 	 * @param string $fileName <p>
 	 * Path to the BMP image.
 	 * </p>
-	 * @return resource an image resource identifier on success, <b>FALSE</b> on errors.
+	 * @return bool|resource an image resource identifier on success, <b>FALSE</b> on errors.
 	 */
 	private function imagecreatefrombmp($fileName) {
 		if (!($fh = fopen($fileName, 'rb'))) {
@@ -599,9 +624,9 @@ class OC_Image {
 			$meta['imagesize'] = $meta['filesize'] - $meta['offset'];
 			// in rare cases filesize is equal to offset so we need to read physical size
 			if ($meta['imagesize'] < 1) {
-				$meta['imagesize'] = @filesize($filename) - $meta['offset'];
+				$meta['imagesize'] = @filesize($fileName) - $meta['offset'];
 				if ($meta['imagesize'] < 1) {
-					trigger_error('imagecreatefrombmp: Can not obtain filesize of ' . $filename . '!', E_USER_WARNING);
+					trigger_error('imagecreatefrombmp: Can not obtain filesize of ' . $fileName . '!', E_USER_WARNING);
 					return false;
 				}
 			}
@@ -706,7 +731,7 @@ class OC_Image {
 	/**
 	* @brief Resizes the image preserving ratio.
 	* @param integer $maxSize The maximum size of either the width or height.
-	* @returns bool
+	* @return bool
 	*/
 	public function resize($maxSize) {
 		if(!$this->valid()) {
@@ -729,6 +754,11 @@ class OC_Image {
 		return true;
 	}
 
+	/**
+	 * @param int $width
+	 * @param int $height
+	 * @return bool
+	 */
 	public function preciseResize($width, $height) {
 		if (!$this->valid()) {
 			OC_Log::write('core', __METHOD__.'(): No image loaded', OC_Log::ERROR);
@@ -764,8 +794,8 @@ class OC_Image {
 
 	/**
 	* @brief Crops the image to the middle square. If the image is already square it just returns.
-	* @param int maximum size for the result (optional)
-	* @returns bool for success or failure
+	* @param int $size maximum size for the result (optional)
+	* @return bool for success or failure
 	*/
 	public function centerCrop($size=0) {
 		if(!$this->valid()) {
@@ -823,11 +853,11 @@ class OC_Image {
 
 	/**
 	* @brief Crops the image from point $x$y with dimension $wx$h.
-	* @param $x Horizontal position
-	* @param $y Vertical position
-	* @param $w Width
-	* @param $h Height
-	* @returns bool for success or failure
+	* @param int $x Horizontal position
+	* @param int $y Vertical position
+	* @param int $w Width
+	* @param int $h Height
+	* @return bool for success or failure
 	*/
 	public function crop($x, $y, $w, $h) {
 		if(!$this->valid()) {
@@ -855,7 +885,7 @@ class OC_Image {
 	 * @brief Resizes the image to fit within a boundry while preserving ratio.
 	 * @param integer $maxWidth
 	 * @param integer $maxHeight
-	 * @returns bool
+	 * @return bool
 	 */
 	public function fitIn($maxWidth, $maxHeight) {
 		if(!$this->valid()) {
@@ -947,7 +977,7 @@ if ( ! function_exists( 'imagebmp') ) {
 						$index = imagecolorat($im, $i, $j);
 						if ($index !== $lastIndex || $sameNum > 255) {
 							if ($sameNum != 0) {
-								$bmpData .= chr($same_num) . chr($lastIndex);
+								$bmpData .= chr($sameNum) . chr($lastIndex);
 							}
 							$lastIndex = $index;
 							$sameNum = 1;
diff --git a/lib/private/installer.php b/lib/private/installer.php
index 11633a4d4a1..64e8e3a5e7a 100644
--- a/lib/private/installer.php
+++ b/lib/private/installer.php
@@ -464,7 +464,7 @@ class OC_Installer{
 		// is the code checker enabled?
 		if(OC_Config::getValue('appcodechecker', true)) {
 			// check if grep is installed
-			$grep = exec('which grep');
+			$grep = exec('command -v grep');
 			if($grep=='') {
 				OC_Log::write('core',
 					'grep not installed. So checking the code of the app "'.$appname.'" was not possible',
diff --git a/lib/private/l10n.php b/lib/private/l10n.php
index f0b4f9a70f6..175360e27a3 100644
--- a/lib/private/l10n.php
+++ b/lib/private/l10n.php
@@ -405,7 +405,7 @@ class OC_L10N implements \OCP\IL10N {
 
 	/**
 	 * @brief Choose a language
-	 * @param array $texts Associative Array with possible strings
+	 * @param array $text Associative Array with possible strings
 	 * @returns String
 	 *
 	 * $text is an array 'de' => 'hallo welt', 'en' => 'hello world', ...
@@ -413,14 +413,14 @@ class OC_L10N implements \OCP\IL10N {
 	 * This function is useful to avoid loading thousands of files if only one
 	 * simple string is needed, for example in appinfo.php
 	 */
-	public static function selectLanguage($texts) {
-		$lang = self::findLanguage(array_keys($texts));
-		return $texts[$lang];
+	public static function selectLanguage($text) {
+		$lang = self::findLanguage(array_keys($text));
+		return $text[$lang];
 	}
 
 	/**
 	 * @brief find the best language
-	 * @param array|string $app Array or string, details below
+	 * @param array|string $app details below
 	 * @returns string language
 	 *
 	 * If $app is an array, ownCloud assumes that these are the available
@@ -532,8 +532,9 @@ class OC_L10N implements \OCP\IL10N {
 	}
 
 	/**
-	 * @param string $lang
 	 * @param string $app
+	 * @param string $lang
+	 * @returns bool
 	 */
 	public static function languageExists($app, $lang) {
 		if ($lang == 'en') {//english is always available
diff --git a/lib/private/mail.php b/lib/private/mail.php
index 90c3e343199..79f51609631 100644
--- a/lib/private/mail.php
+++ b/lib/private/mail.php
@@ -72,11 +72,9 @@ class OC_Mail {
 		$mailo->From = $fromaddress;
 		$mailo->FromName = $fromname;;
 		$mailo->Sender = $fromaddress;
-		$a=explode(' ', $toaddress);
 		try {
-			foreach($a as $ad) {
-				$mailo->AddAddress($ad, $toname);
-			}
+			$toaddress = self::buildAsciiEmail($toaddress);
+			$mailo->AddAddress($toaddress, $toname);
 
 			if($ccaddress<>'') $mailo->AddCC($ccaddress, $ccname);
 			if($bcc<>'') $mailo->AddBCC($bcc);
@@ -127,7 +125,23 @@ class OC_Mail {
 	 * @param string $emailAddress a given email address to be validated
 	 * @return bool
 	 */
-	public static function ValidateAddress($emailAddress) {
+	public static function validateAddress($emailAddress) {
+		$emailAddress = self::buildAsciiEmail($emailAddress);
 		return PHPMailer::ValidateAddress($emailAddress);
 	}
+
+	/**
+	 * IDN domains will be properly converted to ascii domains.
+	 *
+	 * @param string $emailAddress
+	 * @return string
+	 */
+	public static function buildAsciiEmail($emailAddress) {
+
+		list($name, $domain) = explode('@', $emailAddress, 2);
+		$domain = idn_to_ascii($domain);
+
+		return "$name@$domain";
+	}
+
 }
diff --git a/lib/private/mimetypes.list.php b/lib/private/mimetypes.list.php
index 9bd07b89023..91bcf584267 100644
--- a/lib/private/mimetypes.list.php
+++ b/lib/private/mimetypes.list.php
@@ -31,6 +31,7 @@ return array(
 	'bash' => 'text/x-shellscript',
 	'blend' => 'application/x-blender',
 	'bin' => 'application/x-bin',
+	'bmp' => 'image/bmp',
 	'cb7' => 'application/x-cbr',
 	'cba' => 'application/x-cbr',
 	'cbr' => 'application/x-cbr',
@@ -76,6 +77,7 @@ return array(
 	'md' => 'text/markdown',
 	'mdb' => 'application/msaccess',
 	'mdwn' => 'text/markdown',
+	'mkv' => 'video/x-matroska',
 	'mobi' => 'application/x-mobipocket-ebook',
 	'mov' => 'video/quicktime',
 	'mp3' => 'audio/mpeg',
diff --git a/lib/private/ocs/cloud.php b/lib/private/ocs/cloud.php
index cbbf3b626f5..06d6a8eb4b0 100644
--- a/lib/private/ocs/cloud.php
+++ b/lib/private/ocs/cloud.php
@@ -61,17 +61,29 @@ class OC_OCS_Cloud {
 	 *                           the user from whom the information will be returned
 	 */
 	public static function getUser($parameters) {
+		$return  = array();
 		// Check if they are viewing information on themselves
 		if($parameters['userid'] === OC_User::getUser()) {
 			// Self lookup
 			$storage = OC_Helper::getStorageInfo('/');
-			$quota = array(
+			$return['quota'] = array(
 				'free' =>  $storage['free'],
 				'used' =>  $storage['used'],
 				'total' =>  $storage['total'],
 				'relative' => $storage['relative'],
 				);
-			return new OC_OCS_Result(array('quota' => $quota));
+		}
+		if(OC_User::isAdminUser(OC_User::getUser()) 
+			|| OC_Subadmin::isUserAccessible(OC_User::getUser(), $parameters['userid'])) {
+			if(OC_User::userExists($parameters['userid'])) {
+				// Is an admin/subadmin so can see display name
+				$return['displayname'] = OC_User::getDisplayName($parameters['userid']);
+			} else {
+				return new OC_OCS_Result(null, 101);
+			}
+		}
+		if(count($return)) {
+			return new OC_OCS_Result($return);
 		} else {
 			// No permission to view this user data
 			return new OC_OCS_Result(null, 997);
diff --git a/lib/private/ocsclient.php b/lib/private/ocsclient.php
index fa6e3fac1bb..68dc2c2d6ec 100644
--- a/lib/private/ocsclient.php
+++ b/lib/private/ocsclient.php
@@ -72,7 +72,9 @@ class OC_OCSClient{
 		if($xml==false) {
 			return null;
 		}
-		$data=simplexml_load_string($xml);
+		$loadEntities = libxml_disable_entity_loader(true);
+		$data =	simplexml_load_string($xml);
+		libxml_disable_entity_loader($loadEntities);
 
 		$tmp=$data->data;
 		$cats=array();
@@ -117,7 +119,9 @@ class OC_OCSClient{
 		if($xml==false) {
 			return null;
 		}
-		$data=simplexml_load_string($xml);
+		$loadEntities = libxml_disable_entity_loader(true);
+		$data = simplexml_load_string($xml);
+		libxml_disable_entity_loader($loadEntities);
 
 		$tmp=$data->data->content;
 		for($i = 0; $i < count($tmp); $i++) {
@@ -159,7 +163,9 @@ class OC_OCSClient{
 			OC_Log::write('core', 'Unable to parse OCS content', OC_Log::FATAL);
 			return null;
 		}
-		$data=simplexml_load_string($xml);
+		$loadEntities = libxml_disable_entity_loader(true);
+		$data = simplexml_load_string($xml);
+		libxml_disable_entity_loader($loadEntities);
 
 		$tmp=$data->data->content;
 		$app=array();
@@ -200,7 +206,9 @@ class OC_OCSClient{
 			OC_Log::write('core', 'Unable to parse OCS content', OC_Log::FATAL);
 			return null;
 		}
-		$data=simplexml_load_string($xml);
+		$loadEntities = libxml_disable_entity_loader(true);
+		$data = simplexml_load_string($xml);
+		libxml_disable_entity_loader($loadEntities);
 
 		$tmp=$data->data->content;
 		$app=array();
diff --git a/lib/private/preview.php b/lib/private/preview.php
index 80fd003ed8d..0c1af3c9588 100755
--- a/lib/private/preview.php
+++ b/lib/private/preview.php
@@ -42,6 +42,10 @@ class Preview {
 	private $scalingup;
 	private $mimetype;
 
+	//filemapper used for deleting previews
+	// index is path, value is fileinfo
+	static public $deleteFileMapper = array();
+
 	//preview images object
 	/**
 	 * @var \OC_Image
@@ -53,6 +57,11 @@ class Preview {
 	static private $registeredProviders = array();
 
 	/**
+	 * @var \OCP\Files\FileInfo
+	 */
+	protected $info;
+
+	/**
 	 * @brief check if thumbnail or bigger version of thumbnail of file is cached
 	 * @param string $user userid - if no user is given, OC_User::getUser will be used
 	 * @param string $root path of root
@@ -61,12 +70,12 @@ class Preview {
 	 * @param int $maxY The maximum Y size of the thumbnail. It can be smaller depending on the shape of the image
 	 * @param bool $scalingUp Disable/Enable upscaling of previews
 	 * @return mixed (bool / string)
-	 *					false if thumbnail does not exist
-	 *					path to thumbnail if thumbnail exists
-	*/
-	public function __construct($user='', $root='/', $file='', $maxX=1, $maxY=1, $scalingUp=true) {
+	 *                    false if thumbnail does not exist
+	 *                    path to thumbnail if thumbnail exists
+	 */
+	public function __construct($user = '', $root = '/', $file = '', $maxX = 1, $maxY = 1, $scalingUp = true) {
 		//init fileviews
-		if($user === ''){
+		if ($user === '') {
 			$user = \OC_User::getUser();
 		}
 		$this->fileView = new \OC\Files\View('/' . $user . '/' . $root);
@@ -86,11 +95,11 @@ class Preview {
 		$this->preview = null;
 
 		//check if there are preview backends
-		if(empty(self::$providers)) {
+		if (empty(self::$providers)) {
 			self::initProviders();
 		}
 
-		if(empty(self::$providers)) {
+		if (empty(self::$providers)) {
 			\OC_Log::write('core', 'No preview providers exist', \OC_Log::ERROR);
 			throw new \Exception('No preview providers');
 		}
@@ -99,15 +108,15 @@ class Preview {
 	/**
 	 * @brief returns the path of the file you want a thumbnail from
 	 * @return string
-	*/
-	public function	getFile() {
+	 */
+	public function    getFile() {
 		return $this->file;
 	}
 
 	/**
 	 * @brief returns the max width of the preview
 	 * @return integer
-	*/
+	 */
 	public function getMaxX() {
 		return $this->maxX;
 	}
@@ -115,7 +124,7 @@ class Preview {
 	/**
 	 * @brief returns the max height of the preview
 	 * @return integer
-	*/
+	 */
 	public function getMaxY() {
 		return $this->maxY;
 	}
@@ -123,7 +132,7 @@ class Preview {
 	/**
 	 * @brief returns whether or not scalingup is enabled
 	 * @return bool
-	*/
+	 */
 	public function getScalingUp() {
 		return $this->scalingup;
 	}
@@ -131,7 +140,7 @@ class Preview {
 	/**
 	 * @brief returns the name of the thumbnailfolder
 	 * @return string
-	*/
+	 */
 	public function getThumbnailsFolder() {
 		return self::THUMBNAILS_FOLDER;
 	}
@@ -139,7 +148,7 @@ class Preview {
 	/**
 	 * @brief returns the max scale factor
 	 * @return string
-	*/
+	 */
 	public function getMaxScaleFactor() {
 		return $this->maxScaleFactor;
 	}
@@ -147,7 +156,7 @@ class Preview {
 	/**
 	 * @brief returns the max width set in ownCloud's config
 	 * @return string
-	*/
+	 */
 	public function getConfigMaxX() {
 		return $this->configMaxX;
 	}
@@ -155,20 +164,35 @@ class Preview {
 	/**
 	 * @brief returns the max height set in ownCloud's config
 	 * @return string
-	*/
+	 */
 	public function getConfigMaxY() {
 		return $this->configMaxY;
 	}
 
+	protected function getFileInfo() {
+		$absPath = $this->fileView->getAbsolutePath($this->file);
+		$absPath = Files\Filesystem::normalizePath($absPath);
+		if(array_key_exists($absPath, self::$deleteFileMapper)) {
+			$this->info = self::$deleteFileMapper[$absPath];
+		} else if (!$this->info) {
+			$this->info = $this->fileView->getFileInfo($this->file);
+		}
+		return $this->info;
+	}
+
 	/**
 	 * @brief set the path of the file you want a thumbnail from
 	 * @param string $file
 	 * @return $this
-	*/
+	 */
 	public function setFile($file) {
 		$this->file = $file;
+		$this->info = null;
 		if ($file !== '') {
-			$this->mimetype = $this->fileView->getMimeType($this->file);
+			$this->getFileInfo();
+			if($this->info !== null && $this->info !== false) {
+				$this->mimetype = $this->info->getMimetype();
+			}
 		}
 		return $this;
 	}
@@ -185,14 +209,14 @@ class Preview {
 	 * @brief set the the max width of the preview
 	 * @param int $maxX
 	 * @return $this
-	*/
-	public function setMaxX($maxX=1) {
-		if($maxX <= 0) {
+	 */
+	public function setMaxX($maxX = 1) {
+		if ($maxX <= 0) {
 			throw new \Exception('Cannot set width of 0 or smaller!');
 		}
 		$configMaxX = $this->getConfigMaxX();
-		if(!is_null($configMaxX)) {
-			if($maxX > $configMaxX) {
+		if (!is_null($configMaxX)) {
+			if ($maxX > $configMaxX) {
 				\OC_Log::write('core', 'maxX reduced from ' . $maxX . ' to ' . $configMaxX, \OC_Log::DEBUG);
 				$maxX = $configMaxX;
 			}
@@ -205,14 +229,14 @@ class Preview {
 	 * @brief set the the max height of the preview
 	 * @param int $maxY
 	 * @return $this
-	*/
-	public function setMaxY($maxY=1) {
-		if($maxY <= 0) {
+	 */
+	public function setMaxY($maxY = 1) {
+		if ($maxY <= 0) {
 			throw new \Exception('Cannot set height of 0 or smaller!');
 		}
 		$configMaxY = $this->getConfigMaxY();
-		if(!is_null($configMaxY)) {
-			if($maxY > $configMaxY) {
+		if (!is_null($configMaxY)) {
+			if ($maxY > $configMaxY) {
 				\OC_Log::write('core', 'maxX reduced from ' . $maxY . ' to ' . $configMaxY, \OC_Log::DEBUG);
 				$maxY = $configMaxY;
 			}
@@ -225,9 +249,9 @@ class Preview {
 	 * @brief set whether or not scalingup is enabled
 	 * @param bool $scalingUp
 	 * @return $this
-	*/
+	 */
 	public function setScalingup($scalingUp) {
-		if($this->getMaxScaleFactor() === 1) {
+		if ($this->getMaxScaleFactor() === 1) {
 			$scalingUp = false;
 		}
 		$this->scalingup = $scalingUp;
@@ -237,15 +261,15 @@ class Preview {
 	/**
 	 * @brief check if all parameters are valid
 	 * @return bool
-	*/
+	 */
 	public function isFileValid() {
 		$file = $this->getFile();
-		if($file === '') {
+		if ($file === '') {
 			\OC_Log::write('core', 'No filename passed', \OC_Log::DEBUG);
 			return false;
 		}
 
-		if(!$this->fileView->file_exists($file)) {
+		if (!$this->fileView->file_exists($file)) {
 			\OC_Log::write('core', 'File:"' . $file . '" not found', \OC_Log::DEBUG);
 			return false;
 		}
@@ -256,40 +280,44 @@ class Preview {
 	/**
 	 * @brief deletes previews of a file with specific x and y
 	 * @return bool
-	*/
+	 */
 	public function deletePreview() {
 		$file = $this->getFile();
 
-		$fileInfo = $this->fileView->getFileInfo($file);
-		$fileId = $fileInfo['fileid'];
+		$fileInfo = $this->getFileInfo($file);
+		if($fileInfo !== null && $fileInfo !== false) {
+			$fileId = $fileInfo->getId();
 
-		$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/' . $this->getMaxX() . '-' . $this->getMaxY() . '.png';
-		$this->userView->unlink($previewPath);
-		return !$this->userView->file_exists($previewPath);
+			$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/' . $this->getMaxX() . '-' . $this->getMaxY() . '.png';
+			return $this->userView->unlink($previewPath);
+		}
+		return false;
 	}
 
 	/**
 	 * @brief deletes all previews of a file
 	 * @return bool
-	*/
+	 */
 	public function deleteAllPreviews() {
 		$file = $this->getFile();
 
-		$fileInfo = $this->fileView->getFileInfo($file);
-		$fileId = $fileInfo['fileid'];
+		$fileInfo = $this->getFileInfo($file);
+		if($fileInfo !== null && $fileInfo !== false) {
+			$fileId = $fileInfo->getId();
 
-		$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/';
-		$this->userView->deleteAll($previewPath);
-		$this->userView->rmdir($previewPath);
-		return !$this->userView->is_dir($previewPath);
+			$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/';
+			$this->userView->deleteAll($previewPath);
+			return $this->userView->rmdir($previewPath);
+		}
+		return false;
 	}
 
 	/**
 	 * @brief check if thumbnail or bigger version of thumbnail of file is cached
 	 * @return mixed (bool / string)
-	 *				false if thumbnail does not exist
-	 *				path to thumbnail if thumbnail exists
-	*/
+	 *                false if thumbnail does not exist
+	 *                path to thumbnail if thumbnail exists
+	 */
 	private function isCached() {
 		$file = $this->getFile();
 		$maxX = $this->getMaxX();
@@ -297,75 +325,75 @@ class Preview {
 		$scalingUp = $this->getScalingUp();
 		$maxScaleFactor = $this->getMaxScaleFactor();
 
-		$fileInfo = $this->fileView->getFileInfo($file);
-		$fileId = $fileInfo['fileid'];
+		$fileInfo = $this->getFileInfo($file);
+		$fileId = $fileInfo->getId();
 
-		if(is_null($fileId)) {
+		if (is_null($fileId)) {
 			return false;
 		}
 
 		$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/';
-		if(!$this->userView->is_dir($previewPath)) {
+		if (!$this->userView->is_dir($previewPath)) {
 			return false;
 		}
 
 		//does a preview with the wanted height and width already exist?
-		if($this->userView->file_exists($previewPath . $maxX . '-' . $maxY . '.png')) {
+		if ($this->userView->file_exists($previewPath . $maxX . '-' . $maxY . '.png')) {
 			return $previewPath . $maxX . '-' . $maxY . '.png';
 		}
 
-		$wantedAspectRatio = (float) ($maxX / $maxY);
+		$wantedAspectRatio = (float)($maxX / $maxY);
 
 		//array for usable cached thumbnails
 		$possibleThumbnails = array();
 
 		$allThumbnails = $this->userView->getDirectoryContent($previewPath);
-		foreach($allThumbnails as $thumbnail) {
+		foreach ($allThumbnails as $thumbnail) {
 			$name = rtrim($thumbnail['name'], '.png');
 			$size = explode('-', $name);
-			$x = (int) $size[0];
-			$y = (int) $size[1];
+			$x = (int)$size[0];
+			$y = (int)$size[1];
 
-			$aspectRatio = (float) ($x / $y);
-			if($aspectRatio !== $wantedAspectRatio) {
+			$aspectRatio = (float)($x / $y);
+			if ($aspectRatio !== $wantedAspectRatio) {
 				continue;
 			}
 
-			if($x < $maxX || $y < $maxY) {
-				if($scalingUp) {
+			if ($x < $maxX || $y < $maxY) {
+				if ($scalingUp) {
 					$scalefactor = $maxX / $x;
-					if($scalefactor > $maxScaleFactor) {
+					if ($scalefactor > $maxScaleFactor) {
 						continue;
 					}
-				}else{
+				} else {
 					continue;
 				}
 			}
 			$possibleThumbnails[$x] = $thumbnail['path'];
 		}
 
-		if(count($possibleThumbnails) === 0) {
+		if (count($possibleThumbnails) === 0) {
 			return false;
 		}
 
-		if(count($possibleThumbnails) === 1) {
+		if (count($possibleThumbnails) === 1) {
 			return current($possibleThumbnails);
 		}
 
 		ksort($possibleThumbnails);
 
-		if(key(reset($possibleThumbnails)) > $maxX) {
+		if (key(reset($possibleThumbnails)) > $maxX) {
 			return current(reset($possibleThumbnails));
 		}
 
-		if(key(end($possibleThumbnails)) < $maxX) {
+		if (key(end($possibleThumbnails)) < $maxX) {
 			return current(end($possibleThumbnails));
 		}
 
-		foreach($possibleThumbnails as $width => $path) {
-			if($width < $maxX) {
+		foreach ($possibleThumbnails as $width => $path) {
+			if ($width < $maxX) {
 				continue;
-			}else{
+			} else {
 				return $path;
 			}
 		}
@@ -374,9 +402,9 @@ class Preview {
 	/**
 	 * @brief return a preview of a file
 	 * @return \OC_Image
-	*/
+	 */
 	public function getPreview() {
-		if(!is_null($this->preview) && $this->preview->valid()){
+		if (!is_null($this->preview) && $this->preview->valid()) {
 			return $this->preview;
 		}
 
@@ -386,22 +414,28 @@ class Preview {
 		$maxY = $this->getMaxY();
 		$scalingUp = $this->getScalingUp();
 
-		$fileInfo = $this->fileView->getFileInfo($file);
-		$fileId = $fileInfo['fileid'];
+		$fileInfo = $this->getFileInfo($file);
+		if($fileInfo === null || $fileInfo === false) {
+			return new \OC_Image();
+		}
+		$fileId = $fileInfo->getId();
 
 		$cached = $this->isCached();
 
-		if($cached) {
-			$image = new \OC_Image($this->userView->file_get_contents($cached, 'r'));
+		if ($cached) {
+			$stream = $this->userView->fopen($cached, 'r');
+			$image = new \OC_Image();
+			$image->loadFromFileHandle($stream);
 			$this->preview = $image->valid() ? $image : null;
 			$this->resizeAndCrop();
+			fclose($stream);
 		}
 
-		if(is_null($this->preview)) {
+		if (is_null($this->preview)) {
 			$preview = null;
 
-			foreach(self::$providers as $supportedMimetype => $provider) {
-				if(!preg_match($supportedMimetype, $this->mimetype)) {
+			foreach (self::$providers as $supportedMimetype => $provider) {
+				if (!preg_match($supportedMimetype, $this->mimetype)) {
 					continue;
 				}
 
@@ -409,7 +443,7 @@ class Preview {
 
 				$preview = $provider->getThumbnail($file, $maxX, $maxY, $scalingUp, $this->fileView);
 
-				if(!($preview instanceof \OC_Image)) {
+				if (!($preview instanceof \OC_Image)) {
 					continue;
 				}
 
@@ -419,11 +453,11 @@ class Preview {
 				$previewPath = $this->getThumbnailsFolder() . '/' . $fileId . '/';
 				$cachePath = $previewPath . $maxX . '-' . $maxY . '.png';
 
-				if($this->userView->is_dir($this->getThumbnailsFolder() . '/') === false) {
+				if ($this->userView->is_dir($this->getThumbnailsFolder() . '/') === false) {
 					$this->userView->mkdir($this->getThumbnailsFolder() . '/');
 				}
 
-				if($this->userView->is_dir($previewPath) === false) {
+				if ($this->userView->is_dir($previewPath) === false) {
 					$this->userView->mkdir($previewPath);
 				}
 
@@ -433,7 +467,7 @@ class Preview {
 			}
 		}
 
-		if(is_null($this->preview)) {
+		if (is_null($this->preview)) {
 			$this->preview = new \OC_Image();
 		}
 
@@ -443,20 +477,20 @@ class Preview {
 	/**
 	 * @brief show preview
 	 * @return void
-	*/
+	 */
 	public function showPreview() {
 		\OCP\Response::enableCaching(3600 * 24); // 24 hours
-		if(is_null($this->preview)) {
+		if (is_null($this->preview)) {
 			$this->getPreview();
 		}
-		$this->preview->show();
+		$this->preview->show('image/png');
 		return;
 	}
 
 	/**
 	 * @brief show preview
 	 * @return void
-	*/
+	 */
 	public function show() {
 		$this->showPreview();
 		return;
@@ -465,7 +499,7 @@ class Preview {
 	/**
 	 * @brief resize, crop and fix orientation
 	 * @return void
-	*/
+	 */
 	private function resizeAndCrop() {
 		$image = $this->preview;
 		$x = $this->getMaxX();
@@ -473,17 +507,17 @@ class Preview {
 		$scalingUp = $this->getScalingUp();
 		$maxscalefactor = $this->getMaxScaleFactor();
 
-		if(!($image instanceof \OC_Image)) {
+		if (!($image instanceof \OC_Image)) {
 			\OC_Log::write('core', '$this->preview is not an instance of OC_Image', \OC_Log::DEBUG);
 			return;
 		}
 
 		$image->fixOrientation();
 
-		$realx = (int) $image->width();
-		$realy = (int) $image->height();
+		$realx = (int)$image->width();
+		$realy = (int)$image->height();
 
-		if($x === $realx && $y === $realy) {
+		if ($x === $realx && $y === $realy) {
 			$this->preview = $image;
 			return;
 		}
@@ -491,36 +525,36 @@ class Preview {
 		$factorX = $x / $realx;
 		$factorY = $y / $realy;
 
-		if($factorX >= $factorY) {
+		if ($factorX >= $factorY) {
 			$factor = $factorX;
-		}else{
+		} else {
 			$factor = $factorY;
 		}
 
-		if($scalingUp === false) {
-			if($factor > 1) {
+		if ($scalingUp === false) {
+			if ($factor > 1) {
 				$factor = 1;
 			}
 		}
 
-		if(!is_null($maxscalefactor)) {
-			if($factor > $maxscalefactor) {
+		if (!is_null($maxscalefactor)) {
+			if ($factor > $maxscalefactor) {
 				\OC_Log::write('core', 'scalefactor reduced from ' . $factor . ' to ' . $maxscalefactor, \OC_Log::DEBUG);
 				$factor = $maxscalefactor;
 			}
 		}
 
-		$newXsize = (int) ($realx * $factor);
-		$newYsize = (int) ($realy * $factor);
+		$newXsize = (int)($realx * $factor);
+		$newYsize = (int)($realy * $factor);
 
 		$image->preciseResize($newXsize, $newYsize);
 
-		if($newXsize === $x && $newYsize === $y) {
+		if ($newXsize === $x && $newYsize === $y) {
 			$this->preview = $image;
 			return;
 		}
 
-		if($newXsize >= $x && $newYsize >= $y) {
+		if ($newXsize >= $x && $newYsize >= $y) {
 			$cropX = floor(abs($x - $newXsize) * 0.5);
 			//don't crop previews on the Y axis, this sucks if it's a document.
 			//$cropY = floor(abs($y - $newYsize) * 0.5);
@@ -532,19 +566,19 @@ class Preview {
 			return;
 		}
 
-		if($newXsize < $x || $newYsize < $y) {
-			if($newXsize > $x) {
+		if ($newXsize < $x || $newYsize < $y) {
+			if ($newXsize > $x) {
 				$cropX = floor(($newXsize - $x) * 0.5);
 				$image->crop($cropX, 0, $x, $newYsize);
 			}
 
-			if($newYsize > $y) {
+			if ($newYsize > $y) {
 				$cropY = floor(($newYsize - $y) * 0.5);
 				$image->crop(0, $cropY, $newXsize, $y);
 			}
 
-			$newXsize = (int) $image->width();
-			$newYsize = (int) $image->height();
+			$newXsize = (int)$image->width();
+			$newYsize = (int)$image->height();
 
 			//create transparent background layer
 			$backgroundlayer = imagecreatetruecolor($x, $y);
@@ -573,8 +607,8 @@ class Preview {
 	 * @param array $options
 	 * @return void
 	 */
-	public static function registerProvider($class, $options=array()) {
-		self::$registeredProviders[]=array('class'=>$class, 'options'=>$options);
+	public static function registerProvider($class, $options = array()) {
+		self::$registeredProviders[] = array('class' => $class, 'options' => $options);
 	}
 
 	/**
@@ -582,19 +616,19 @@ class Preview {
 	 * @return void
 	 */
 	private static function initProviders() {
-		if(!\OC_Config::getValue('enable_previews', true)) {
+		if (!\OC_Config::getValue('enable_previews', true)) {
 			$provider = new Preview\Unknown(array());
 			self::$providers = array($provider->getMimeType() => $provider);
 			return;
 		}
 
-		if(count(self::$providers)>0) {
+		if (count(self::$providers) > 0) {
 			return;
 		}
 
-		foreach(self::$registeredProviders as $provider) {
-			$class=$provider['class'];
-			$options=$provider['options'];
+		foreach (self::$registeredProviders as $provider) {
+			$class = $provider['class'];
+			$options = $provider['options'];
 
 			$object = new $class($options);
 
@@ -609,12 +643,35 @@ class Preview {
 		self::post_delete($args);
 	}
 
-	public static function post_delete($args) {
+	public static function prepare_delete_files($args) {
+		self::prepare_delete($args, 'files/');
+	}
+
+	public static function prepare_delete($args, $prefix='') {
 		$path = $args['path'];
-		if(substr($path, 0, 1) === '/') {
+		if (substr($path, 0, 1) === '/') {
 			$path = substr($path, 1);
 		}
-		$preview = new Preview(\OC_User::getUser(), 'files/', $path);
+
+		$view = new \OC\Files\View('/' . \OC_User::getUser() . '/' . $prefix);
+		$info = $view->getFileInfo($path);
+
+		\OC\Preview::$deleteFileMapper = array_merge(
+			\OC\Preview::$deleteFileMapper,
+			array(
+				Files\Filesystem::normalizePath($view->getAbsolutePath($path)) => $info,
+			)
+		);
+	}
+
+	public static function post_delete_files($args) {
+		self::post_delete($args, 'files/');
+	}
+
+	public static function post_delete($args, $prefix='') {
+		$path = Files\Filesystem::normalizePath($args['path']);
+
+		$preview = new Preview(\OC_User::getUser(), $prefix, $path);
 		$preview->deleteAllPreviews();
 	}
 
@@ -622,19 +679,19 @@ class Preview {
 	 * @param string $mimetype
 	 */
 	public static function isMimeSupported($mimetype) {
-		if(!\OC_Config::getValue('enable_previews', true)) {
+		if (!\OC_Config::getValue('enable_previews', true)) {
 			return false;
 		}
 
 		//check if there are preview backends
-		if(empty(self::$providers)) {
+		if (empty(self::$providers)) {
 			self::initProviders();
 		}
 
 		//remove last element because it has the mimetype *
 		$providers = array_slice(self::$providers, 0, -1);
-		foreach($providers as $supportedMimetype => $provider) {
-			if(preg_match($supportedMimetype, $mimetype)) {
+		foreach ($providers as $supportedMimetype => $provider) {
+			if (preg_match($supportedMimetype, $mimetype)) {
 				return true;
 			}
 		}
diff --git a/lib/private/preview/movies.php b/lib/private/preview/movies.php
index 71cd3bae057..7e0ff51ad2e 100644
--- a/lib/private/preview/movies.php
+++ b/lib/private/preview/movies.php
@@ -9,7 +9,7 @@
 namespace OC\Preview;
 
 function findBinaryPath($program) {
-	exec('which ' . escapeshellarg($program) . ' 2> /dev/null', $output, $returnCode);
+	exec('command -v ' . escapeshellarg($program) . ' 2> /dev/null', $output, $returnCode);
 	if ($returnCode === 0 && count($output) > 0) {
 		return escapeshellcmd($output[0]);
 	}
diff --git a/lib/private/preview/office-cl.php b/lib/private/preview/office-cl.php
index b11fed13ba1..6e4d4321eb7 100644
--- a/lib/private/preview/office-cl.php
+++ b/lib/private/preview/office-cl.php
@@ -64,12 +64,12 @@ if (!\OC_Util::runningOnWindows()) {
 				$cmd = \OC_Config::getValue('preview_libreoffice_path', null);
 			}
 
-			$whichLibreOffice = shell_exec('which libreoffice');
+			$whichLibreOffice = shell_exec('command -v libreoffice');
 			if($cmd === '' && !empty($whichLibreOffice)) {
 				$cmd = 'libreoffice';
 			}
 
-			$whichOpenOffice = shell_exec('which openoffice');
+			$whichOpenOffice = shell_exec('command -v openoffice');
 			if($cmd === '' && !empty($whichOpenOffice)) {
 				$cmd = 'openoffice';
 			}
diff --git a/lib/private/preview/office.php b/lib/private/preview/office.php
index 02bb22e9b94..882c4426e6d 100644
--- a/lib/private/preview/office.php
+++ b/lib/private/preview/office.php
@@ -6,24 +6,29 @@
  * See the COPYING-README file.
  */
 //both, libreoffice backend and php fallback, need imagick
-if (extension_loaded('imagick') && count(@\Imagick::queryFormats("PDF")) === 1) {
-	$isShellExecEnabled = \OC_Helper::is_function_enabled('shell_exec');
+if (extension_loaded('imagick')) {
 
-	// LibreOffice preview is currently not supported on Windows
-	if (!\OC_Util::runningOnWindows()) {
-		$whichLibreOffice = ($isShellExecEnabled ? shell_exec('which libreoffice') : '');
-		$isLibreOfficeAvailable = !empty($whichLibreOffice);
-		$whichOpenOffice = ($isShellExecEnabled ? shell_exec('which libreoffice') : '');
-		$isOpenOfficeAvailable = !empty($whichOpenOffice);
-		//let's see if there is libreoffice or openoffice on this machine
-		if($isShellExecEnabled && ($isLibreOfficeAvailable || $isOpenOfficeAvailable || is_string(\OC_Config::getValue('preview_libreoffice_path', null)))) {
-			require_once('office-cl.php');
-		}else{
+	$checkImagick = new Imagick();
+
+	if(count($checkImagick->queryFormats('PDF')) === 1) {
+		$isShellExecEnabled = \OC_Helper::is_function_enabled('shell_exec');
+
+		// LibreOffice preview is currently not supported on Windows
+		if (!\OC_Util::runningOnWindows()) {
+			$whichLibreOffice = ($isShellExecEnabled ? shell_exec('command -v libreoffice') : '');
+			$isLibreOfficeAvailable = !empty($whichLibreOffice);
+			$whichOpenOffice = ($isShellExecEnabled ? shell_exec('command -v libreoffice') : '');
+			$isOpenOfficeAvailable = !empty($whichOpenOffice);
+			//let's see if there is libreoffice or openoffice on this machine
+			if($isShellExecEnabled && ($isLibreOfficeAvailable || $isOpenOfficeAvailable || is_string(\OC_Config::getValue('preview_libreoffice_path', null)))) {
+				require_once('office-cl.php');
+			}else{
+				//in case there isn't, use our fallback
+				require_once('office-fallback.php');
+			}
+		} else {
 			//in case there isn't, use our fallback
 			require_once('office-fallback.php');
 		}
-	} else {
-		//in case there isn't, use our fallback
-		require_once('office-fallback.php');
 	}
 }
diff --git a/lib/private/preview/pdf.php b/lib/private/preview/pdf.php
index d390b4fc677..064a5a3b3d1 100644
--- a/lib/private/preview/pdf.php
+++ b/lib/private/preview/pdf.php
@@ -7,34 +7,41 @@
  */
 namespace OC\Preview;
 
-if (extension_loaded('imagick') && count(@\Imagick::queryFormats("PDF")) === 1) {
+use Imagick;
 
-	class PDF extends Provider {
+if (extension_loaded('imagick')) {
 
-		public function getMimeType() {
-			return '/application\/pdf/';
-		}
+	$checkImagick = new Imagick();
+
+	if(count($checkImagick->queryFormats('PDF')) === 1) {
 
-		public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {	
-			$tmpPath = $fileview->toTmpFile($path);
+		class PDF extends Provider {
 
-			//create imagick object from pdf
-			try{
-				$pdf = new \imagick($tmpPath . '[0]');
-				$pdf->setImageFormat('jpg');
-			} catch (\Exception $e) {
-				\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
-				return false;
+			public function getMimeType() {
+				return '/application\/pdf/';
 			}
 
-			unlink($tmpPath);
+			public function getThumbnail($path, $maxX, $maxY, $scalingup, $fileview) {
+				$tmpPath = $fileview->toTmpFile($path);
+
+				//create imagick object from pdf
+				try{
+					$pdf = new Imagick($tmpPath . '[0]');
+					$pdf->setImageFormat('jpg');
+				} catch (\Exception $e) {
+					\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
+					return false;
+				}
+
+				unlink($tmpPath);
 
-			//new image object
-			$image = new \OC_Image($pdf);
-			//check if image object is valid
-			return $image->valid() ? $image : false;
+				//new image object
+				$image = new \OC_Image($pdf);
+				//check if image object is valid
+				return $image->valid() ? $image : false;
+			}
 		}
-	}
 
-	\OC\Preview::registerProvider('OC\Preview\PDF');
+		\OC\Preview::registerProvider('OC\Preview\PDF');
+	}
 }
diff --git a/lib/private/preview/svg.php b/lib/private/preview/svg.php
index 9a73fff9467..505122fddbf 100644
--- a/lib/private/preview/svg.php
+++ b/lib/private/preview/svg.php
@@ -7,40 +7,46 @@
  */
 namespace OC\Preview;
 
-if (extension_loaded('imagick') && count(@\Imagick::queryFormats("SVG")) === 1) {
+use Imagick;
 
-	class SVG extends Provider {
+if (extension_loaded('imagick')) {
 
-		public function getMimeType() {
-			return '/image\/svg\+xml/';
-		}
+	$checkImagick = new Imagick();
 
-		public function getThumbnail($path,$maxX,$maxY,$scalingup,$fileview) {
-			try{
-				$svg = new \Imagick();
-				$svg->setBackgroundColor(new \ImagickPixel('transparent'));
+	if(count($checkImagick->queryFormats('SVG')) === 1) {
 
-				$content = stream_get_contents($fileview->fopen($path, 'r'));
-				if(substr($content, 0, 5) !== '<?xml') {
-					$content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
-				}
+		class SVG extends Provider {
 
-				$svg->readImageBlob($content);
-				$svg->setImageFormat('png32');
-			} catch (\Exception $e) {
-				\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
-				return false;
+			public function getMimeType() {
+				return '/image\/svg\+xml/';
 			}
 
+			public function getThumbnail($path,$maxX,$maxY,$scalingup,$fileview) {
+				try{
+					$svg = new Imagick();
+					$svg->setBackgroundColor(new \ImagickPixel('transparent'));
+
+					$content = stream_get_contents($fileview->fopen($path, 'r'));
+					if(substr($content, 0, 5) !== '<?xml') {
+						$content = '<?xml version="1.0" encoding="UTF-8" standalone="no"?>' . $content;
+					}
+
+					$svg->readImageBlob($content);
+					$svg->setImageFormat('png32');
+				} catch (\Exception $e) {
+					\OC_Log::write('core', $e->getmessage(), \OC_Log::ERROR);
+					return false;
+				}
 
-			//new image object
-			$image = new \OC_Image();
-			$image->loadFromData($svg);
-			//check if image object is valid
-			return $image->valid() ? $image : false;
-		}
-	}
 
-	\OC\Preview::registerProvider('OC\Preview\SVG');
+				//new image object
+				$image = new \OC_Image();
+				$image->loadFromData($svg);
+				//check if image object is valid
+				return $image->valid() ? $image : false;
+			}
+		}
 
+		\OC\Preview::registerProvider('OC\Preview\SVG');
+	}
 }
 \ No newline at end of file
diff --git a/lib/private/request.php b/lib/private/request.php
index 59a9e395e85..8041c4f0048 100755
--- a/lib/private/request.php
+++ b/lib/private/request.php
@@ -13,6 +13,8 @@ class OC_Request {
 	const USER_AGENT_ANDROID_MOBILE_CHROME = '#Android.*Chrome/[.0-9]*#';
 	const USER_AGENT_FREEBOX = '#^Mozilla/5\.0$#';
 
+	const REGEX_LOCALHOST = '/^(127\.0\.0\.1|localhost)(:[0-9]+|)$/';
+
 	/**
 	 * @brief Check overwrite condition
 	 * @param string $type
@@ -25,49 +27,91 @@ class OC_Request {
 	}
 
 	/**
-	 * @brief Checks whether a domain is considered as trusted. This is used to prevent Host Header Poisoning.
-	 * @param string $domain
-	 * @return bool
+	 * @brief Checks whether a domain is considered as trusted from the list
+	 * of trusted domains. If no trusted domains have been configured, returns
+	 * true.
+	 * This is used to prevent Host Header Poisoning.
+	 * @param string $host
+	 * @return bool true if the given domain is trusted or if no trusted domains
+	 * have been configured
 	 */
 	public static function isTrustedDomain($domain) {
-		$trustedList = \OC_Config::getValue('trusted_domains', array(''));
+		$trustedList = \OC_Config::getValue('trusted_domains', array());
+		if (empty($trustedList)) {
+			return true;
+		}
+		if (preg_match(self::REGEX_LOCALHOST, $domain) === 1) {
+			return true;
+		}
 		return in_array($domain, $trustedList);
 	}
 
 	/**
-	 * @brief Returns the server host
+	 * @brief Returns the unverified server host from the headers without checking
+	 * whether it is a trusted domain
 	 * @returns string the server host
 	 *
 	 * Returns the server host, even if the website uses one or more
 	 * reverse proxies
 	 */
-	public static function serverHost() {
-		if(OC::$CLI) {
-			return 'localhost';
-		}
-		if(OC_Config::getValue('overwritehost', '') !== '' and self::isOverwriteCondition()) {
-			return OC_Config::getValue('overwritehost');
-		}
+	public static function insecureServerHost() {
+		$host = null;
 		if (isset($_SERVER['HTTP_X_FORWARDED_HOST'])) {
 			if (strpos($_SERVER['HTTP_X_FORWARDED_HOST'], ",") !== false) {
-				$host = trim(array_pop(explode(",", $_SERVER['HTTP_X_FORWARDED_HOST'])));
-			}
-			else{
+				$parts = explode(',', $_SERVER['HTTP_X_FORWARDED_HOST']);
+				$host = trim(current($parts));
+			} else {
 				$host = $_SERVER['HTTP_X_FORWARDED_HOST'];
 			}
 		} else {
 			if (isset($_SERVER['HTTP_HOST'])) {
 				$host = $_SERVER['HTTP_HOST'];
-			}
-			else if (isset($_SERVER['SERVER_NAME'])) {
+			} else if (isset($_SERVER['SERVER_NAME'])) {
 				$host = $_SERVER['SERVER_NAME'];
 			}
 		}
+		return $host;
+	}
+
+	/**
+	 * Returns the overwritehost setting from the config if set and
+	 * if the overwrite condition is met
+	 * @return overwritehost value or null if not defined or the defined condition
+	 * isn't met
+	 */
+	public static function getOverwriteHost() {
+		if(OC_Config::getValue('overwritehost', '') !== '' and self::isOverwriteCondition()) {
+			return OC_Config::getValue('overwritehost');
+		}
+		return null;
+	}
+
+	/**
+	 * @brief Returns the server host from the headers, or the first configured
+	 * trusted domain if the host isn't in the trusted list
+	 * @returns string the server host
+	 *
+	 * Returns the server host, even if the website uses one or more
+	 * reverse proxies
+	 */
+	public static function serverHost() {
+		if(OC::$CLI) {
+			return 'localhost';
+		}
+
+		// overwritehost is always trusted
+		$host = self::getOverwriteHost();
+		if ($host !== null) {
+			return $host;
+		}
+
+		// get the host from the headers
+		$host = self::insecureServerHost();
 
 		// Verify that the host is a trusted domain if the trusted domains
 		// are defined
 		// If no trusted domain is provided the first trusted domain is returned
-		if(self::isTrustedDomain($host) || \OC_Config::getValue('trusted_domains', "") === "") {
+		if (self::isTrustedDomain($host)) {
 			return $host;
 		} else {
 			$trustedList = \OC_Config::getValue('trusted_domains', array(''));
diff --git a/lib/private/response.php b/lib/private/response.php
index 71c538fb311..983c682bf3f 100644
--- a/lib/private/response.php
+++ b/lib/private/response.php
@@ -12,6 +12,7 @@ class OC_Response {
 	const STATUS_TEMPORARY_REDIRECT = 307;
 	const STATUS_NOT_FOUND = 404;
 	const STATUS_INTERNAL_SERVER_ERROR = 500;
+	const STATUS_SERVICE_UNAVAILABLE = 503;
 
 	/**
 	* @brief Enable response caching by sending correct HTTP headers
@@ -74,6 +75,9 @@ class OC_Response {
 			case self::STATUS_INTERNAL_SERVER_ERROR;
 				$status = $status . ' Internal Server Error';
 				break;
+			case self::STATUS_SERVICE_UNAVAILABLE;
+				$status = $status . ' Service Unavailable';
+				break;
 		}
 		header($protocol.' '.$status);
 	}
diff --git a/lib/private/route/cachingrouter.php b/lib/private/route/cachingrouter.php
new file mode 100644
index 00000000000..ad25372391f
--- /dev/null
+++ b/lib/private/route/cachingrouter.php
@@ -0,0 +1,43 @@
+<?php
+/**
+ * Copyright (c) 2014 Robin Appelman <icewind@owncloud.com>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Route;
+
+class CachingRouter extends Router {
+	/**
+	 * @var \OCP\ICache
+	 */
+	protected $cache;
+
+	/**
+	 * @param \OCP\ICache $cache
+	 */
+	public function __construct($cache) {
+		$this->cache = $cache;
+		parent::__construct();
+	}
+
+	/**
+	 * Generate url based on $name and $parameters
+	 *
+	 * @param string $name Name of the route to use.
+	 * @param array $parameters Parameters for the route
+	 * @param bool $absolute
+	 * @return string
+	 */
+	public function generate($name, $parameters = array(), $absolute = false) {
+		$key = $name . json_encode($parameters) . $absolute;
+		if ($this->cache->hasKey($key)) {
+			return $this->cache->get($key);
+		} else {
+			$url = parent::generate($name, $parameters, $absolute);
+			$this->cache->set($key, $url, 3600);
+			return $url;
+		}
+	}
+}
diff --git a/lib/private/route.php b/lib/private/route/route.php
index fb7da456b62..6ade9ec15f6 100644
--- a/lib/private/route.php
+++ b/lib/private/route/route.php
@@ -6,13 +6,17 @@
  * See the COPYING-README file.
  */
 
-use Symfony\Component\Routing\Route;
+namespace OC\Route;
 
-class OC_Route extends Route {
+use OCP\Route\IRoute;
+use Symfony\Component\Routing\Route as SymfonyRoute;
+
+class Route extends SymfonyRoute implements IRoute {
 	/**
 	 * Specify the method when this route is to be used
 	 *
 	 * @param string $method HTTP method (uppercase)
+	 * @return \OC\Route\Route
 	 */
 	public function method($method) {
 		$this->setRequirement('_method', strtoupper($method));
@@ -63,6 +67,7 @@ class OC_Route extends Route {
 	 * Defaults to use for this route
 	 *
 	 * @param array $defaults The defaults
+	 * @return \OC\Route\Route
 	 */
 	public function defaults($defaults) {
 		$action = $this->getDefault('action');
@@ -78,6 +83,7 @@ class OC_Route extends Route {
 	 * Requirements for this route
 	 *
 	 * @param array $requirements The requirements
+	 * @return \OC\Route\Route
 	 */
 	public function requirements($requirements) {
 		$method = $this->getRequirement('_method');
@@ -93,8 +99,10 @@ class OC_Route extends Route {
 
 	/**
 	 * The action to execute when this route matches
+	 *
 	 * @param string|callable $class the class or a callable
 	 * @param string $function the function to use with the class
+	 * @return \OC\Route\Route
 	 *
 	 * This function is called with $class set to a callable or
 	 * to the class with $function
diff --git a/lib/private/route/router.php b/lib/private/route/router.php
new file mode 100644
index 00000000000..1f0a23ee124
--- /dev/null
+++ b/lib/private/route/router.php
@@ -0,0 +1,233 @@
+<?php
+/**
+ * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
+ * This file is licensed under the Affero General Public License version 3 or
+ * later.
+ * See the COPYING-README file.
+ */
+
+namespace OC\Route;
+
+use OCP\Route\IRouter;
+use Symfony\Component\Routing\Matcher\UrlMatcher;
+use Symfony\Component\Routing\Generator\UrlGenerator;
+use Symfony\Component\Routing\RequestContext;
+use Symfony\Component\Routing\RouteCollection;
+
+class Router implements IRouter {
+	/**
+	 * @var \Symfony\Component\Routing\RouteCollection[]
+	 */
+	protected $collections = array();
+
+	/**
+	 * @var \Symfony\Component\Routing\RouteCollection
+	 */
+	protected $collection = null;
+
+	/**
+	 * @var \Symfony\Component\Routing\RouteCollection
+	 */
+	protected $root = null;
+
+	/**
+	 * @var \Symfony\Component\Routing\Generator\UrlGenerator
+	 */
+	protected $generator = null;
+
+	/**
+	 * @var string[]
+	 */
+	protected $routingFiles;
+
+	/**
+	 * @var string
+	 */
+	protected $cacheKey;
+
+	protected $loaded = false;
+
+	protected $loadedApps = array();
+
+	public function __construct() {
+		$baseUrl = \OC_Helper::linkTo('', 'index.php');
+		if (!\OC::$CLI) {
+			$method = $_SERVER['REQUEST_METHOD'];
+		} else {
+			$method = 'GET';
+		}
+		$host = \OC_Request::serverHost();
+		$schema = \OC_Request::serverProtocol();
+		$this->context = new RequestContext($baseUrl, $method, $host, $schema);
+		// TODO cache
+		$this->root = $this->getCollection('root');
+	}
+
+	/**
+	 * Get the files to load the routes from
+	 *
+	 * @return string[]
+	 */
+	public function getRoutingFiles() {
+		if (!isset($this->routingFiles)) {
+			$this->routingFiles = array();
+			foreach (\OC_APP::getEnabledApps() as $app) {
+				$file = \OC_App::getAppPath($app) . '/appinfo/routes.php';
+				if (file_exists($file)) {
+					$this->routingFiles[$app] = $file;
+				}
+			}
+		}
+		return $this->routingFiles;
+	}
+
+	public function getCacheKey() {
+		if (!isset($this->cacheKey)) {
+			$files = $this->getRoutingFiles();
+			$files[] = 'settings/routes.php';
+			$files[] = 'core/routes.php';
+			$files[] = 'ocs/routes.php';
+			$this->cacheKey = \OC_Cache::generateCacheKeyFromFiles($files);
+		}
+		return $this->cacheKey;
+	}
+
+	/**
+	 * loads the api routes
+	 */
+	public function loadRoutes($app = null) {
+		if ($this->loaded) {
+			return;
+		}
+		if (is_null($app)) {
+			$this->loaded = true;
+			$routingFiles = $this->getRoutingFiles();
+		} else {
+			if (isset($this->loadedApps[$app])) {
+				return;
+			}
+			$file = \OC_App::getAppPath($app) . '/appinfo/routes.php';
+			if (file_exists($file)) {
+				$routingFiles = array($app => $file);
+			} else {
+				$routingFiles = array();
+			}
+		}
+		foreach ($routingFiles as $app => $file) {
+			if (!isset($this->loadedApps[$app])) {
+				$this->loadedApps[$app] = true;
+				$this->useCollection($app);
+				require_once $file;
+				$collection = $this->getCollection($app);
+				$collection->addPrefix('/apps/' . $app);
+				$this->root->addCollection($collection);
+			}
+		}
+		if (!isset($this->loadedApps['core'])) {
+			$this->loadedApps['core'] = true;
+			$this->useCollection('root');
+			require_once 'settings/routes.php';
+			require_once 'core/routes.php';
+
+			// include ocs routes
+			require_once 'ocs/routes.php';
+			$collection = $this->getCollection('ocs');
+			$collection->addPrefix('/ocs');
+			$this->root->addCollection($collection);
+		}
+	}
+
+	/**
+	 * @param string $name
+	 * @return \Symfony\Component\Routing\RouteCollection
+	 */
+	protected function getCollection($name) {
+		if (!isset($this->collections[$name])) {
+			$this->collections[$name] = new RouteCollection();
+		}
+		return $this->collections[$name];
+	}
+
+	/**
+	 * Sets the collection to use for adding routes
+	 *
+	 * @param string $name Name of the collection to use.
+	 */
+	public function useCollection($name) {
+		$this->collection = $this->getCollection($name);
+	}
+
+	/**
+	 * Create a \OC\Route\Route.
+	 *
+	 * @param string $name Name of the route to create.
+	 * @param string $pattern The pattern to match
+	 * @param array $defaults An array of default parameter values
+	 * @param array $requirements An array of requirements for parameters (regexes)
+	 * @return \OC\Route\Route
+	 */
+	public function create($name, $pattern, array $defaults = array(), array $requirements = array()) {
+		$route = new Route($pattern, $defaults, $requirements);
+		$this->collection->add($name, $route);
+		return $route;
+	}
+
+	/**
+	 * Find the route matching $url
+	 *
+	 * @param string $url The url to find
+	 * @throws \Exception
+	 */
+	public function match($url) {
+		if (substr($url, 0, 6) === '/apps/') {
+			// empty string / 'apps' / $app / rest of the route
+			list(, , $app,) = explode('/', $url, 4);
+			$this->loadRoutes($app);
+		} else if (substr($url, 0, 6) === '/core/' or substr($url, 0, 5) === '/ocs/' or substr($url, 0, 10) === '/settings/') {
+			$this->loadRoutes('core');
+		} else {
+			$this->loadRoutes();
+		}
+		$matcher = new UrlMatcher($this->root, $this->context);
+		$parameters = $matcher->match($url);
+		if (isset($parameters['action'])) {
+			$action = $parameters['action'];
+			if (!is_callable($action)) {
+				var_dump($action);
+				throw new \Exception('not a callable action');
+			}
+			unset($parameters['action']);
+			call_user_func($action, $parameters);
+		} elseif (isset($parameters['file'])) {
+			include $parameters['file'];
+		} else {
+			throw new \Exception('no action available');
+		}
+	}
+
+	/**
+	 * Get the url generator
+	 *
+	 */
+	public function getGenerator() {
+		if (null !== $this->generator) {
+			return $this->generator;
+		}
+
+		return $this->generator = new UrlGenerator($this->root, $this->context);
+	}
+
+	/**
+	 * Generate url based on $name and $parameters
+	 *
+	 * @param string $name Name of the route to use.
+	 * @param array $parameters Parameters for the route
+	 * @param bool $absolute
+	 * @return string
+	 */
+	public function generate($name, $parameters = array(), $absolute = false) {
+		$this->loadRoutes();
+		return $this->getGenerator()->generate($name, $parameters, $absolute);
+	}
+
+}
diff --git a/lib/private/router.php b/lib/private/router.php
deleted file mode 100644
index 19c1e4473ec..00000000000
--- a/lib/private/router.php
+++ /dev/null
@@ -1,185 +0,0 @@
-<?php
-/**
- * Copyright (c) 2012 Bart Visscher <bartv@thisnet.nl>
- * This file is licensed under the Affero General Public License version 3 or
- * later.
- * See the COPYING-README file.
- */
-
-use Symfony\Component\Routing\Matcher\UrlMatcher;
-use Symfony\Component\Routing\Generator\UrlGenerator;
-use Symfony\Component\Routing\RequestContext;
-use Symfony\Component\Routing\RouteCollection;
-//use Symfony\Component\Routing\Route;
-
-class OC_Router {
-	protected $collections = array();
-	protected $collection = null;
-	protected $root = null;
-
-	protected $generator = null;
-	protected $routing_files;
-	protected $cache_key;
-
-	public function __construct() {
-		$baseUrl = OC_Helper::linkTo('', 'index.php');
-		if ( !OC::$CLI) {
-			$method = $_SERVER['REQUEST_METHOD'];
-		}else{
-			$method = 'GET';
-		}
-		$host = OC_Request::serverHost();
-		$schema = OC_Request::serverProtocol();
-		$this->context = new RequestContext($baseUrl, $method, $host, $schema);
-		// TODO cache
-		$this->root = $this->getCollection('root');
-	}
-
-	public function getRoutingFiles() {
-		if (!isset($this->routing_files)) {
-			$this->routing_files = array();
-			foreach(OC_APP::getEnabledApps() as $app) {
-				$file = OC_App::getAppPath($app).'/appinfo/routes.php';
-				if(file_exists($file)) {
-					$this->routing_files[$app] = $file;
-				}
-			}
-		}
-		return $this->routing_files;
-	}
-
-	public function getCacheKey() {
-		if (!isset($this->cache_key)) {
-			$files = $this->getRoutingFiles();
-			$files[] = 'settings/routes.php';
-			$files[] = 'core/routes.php';
-			$files[] = 'ocs/routes.php';
-			$this->cache_key = OC_Cache::generateCacheKeyFromFiles($files);
-		}
-		return $this->cache_key;
-	}
-
-	/**
-	 * loads the api routes
-	 */
-	public function loadRoutes() {
-		foreach($this->getRoutingFiles() as $app => $file) {
-			$this->useCollection($app);
-			require_once $file;
-			$collection = $this->getCollection($app);
-			$collection->addPrefix('/apps/'.$app);
-			$this->root->addCollection($collection);
-		}
-		$this->useCollection('root');
-		require_once 'settings/routes.php';
-		require_once 'core/routes.php';
-
-		// include ocs routes
-		require_once 'ocs/routes.php';
-		$collection = $this->getCollection('ocs');
-		$collection->addPrefix('/ocs');
-		$this->root->addCollection($collection);
-	}
-
-	protected function getCollection($name) {
-		if (!isset($this->collections[$name])) {
-			$this->collections[$name] = new RouteCollection();
-		}
-		return $this->collections[$name];
-	}
-
-	/**
-	 * Sets the collection to use for adding routes
-	 *
-	 * @param string $name Name of the colletion to use.
-	 */
-	public function useCollection($name) {
-		$this->collection = $this->getCollection($name);
-	}
-
-	/**
-	 * Create a OC_Route.
-	 *
-	 * @param string $name Name of the route to create.
-	 * @param string $pattern The pattern to match
-	 * @param array  $defaults     An array of default parameter values
-	 * @param array  $requirements An array of requirements for parameters (regexes)
-	 */
-	public function create($name, $pattern, array $defaults = array(), array $requirements = array()) {
-		$route = new OC_Route($pattern, $defaults, $requirements);
-		$this->collection->add($name, $route);
-		return $route;
-	}
-
-	/**
-	 * Find the route matching $url.
-	 *
-	 * @param string $url The url to find
-	 */
-	public function match($url) {
-		$matcher = new UrlMatcher($this->root, $this->context);
-		$parameters = $matcher->match($url);
-		if (isset($parameters['action'])) {
-			$action = $parameters['action'];
-			if (!is_callable($action)) {
-				var_dump($action);
-				throw new Exception('not a callable action');
-			}
-			unset($parameters['action']);
-			call_user_func($action, $parameters);
-		} elseif (isset($parameters['file'])) {
-			include $parameters['file'];
-		} else {
-			throw new Exception('no action available');
-		}
-	}
-
-	/**
-	 * Get the url generator
-	 *
-	 */
-	public function getGenerator()
-	{
-		if (null !== $this->generator) {
-			return $this->generator;
-		}
-
-		return $this->generator = new UrlGenerator($this->root, $this->context);
-	}
-
-	/**
-	 * Generate url based on $name and $parameters
-	 *
-	 * @param string $name Name of the route to use.
-	 * @param array $parameters Parameters for the route
-	 */
-	public function generate($name, $parameters = array(), $absolute = false)
-	{
-		return $this->getGenerator()->generate($name, $parameters, $absolute);
-	}
-
-	/**
-	 * Generate JSON response for routing in javascript
-	 */
-	public static function JSRoutes()
-	{
-		$router = OC::getRouter();
-
-		$etag = $router->getCacheKey();
-		OC_Response::enableCaching();
-		OC_Response::setETagHeader($etag);
-
-		$root = $router->getCollection('root');
-		$routes = array();
-		foreach($root->all() as $name => $route) {
-			$compiled_route = $route->compile();
-			$defaults = $route->getDefaults();
-			unset($defaults['action']);
-			$routes[$name] = array(
-				'tokens' => $compiled_route->getTokens(),
-				'defaults' => $defaults,
-			);
-		}
-		OCP\JSON::success ( array( 'data' => $routes ) );
-	}
-}
diff --git a/lib/private/server.php b/lib/private/server.php
index 3255713e12a..3517d7b3548 100644
--- a/lib/private/server.php
+++ b/lib/private/server.php
@@ -158,6 +158,18 @@ class Server extends SimpleContainer implements IServerContainer {
 			$config = $c->getConfig();
 			return new \OC\BackgroundJob\JobList($c->getDatabaseConnection(), $config);
 		});
+		$this->registerService('Router', function ($c){
+			/**
+			 * @var Server $c
+			 */
+			$cacheFactory = $c->getMemCacheFactory();
+			if ($cacheFactory->isAvailable()) {
+				$router = new \OC\Route\CachingRouter($cacheFactory->create('route'));
+			} else {
+				$router = new \OC\Route\Router();
+			}
+			return $router;
+		});
 	}
 
 	/**
@@ -323,7 +335,7 @@ class Server extends SimpleContainer implements IServerContainer {
 	/**
 	 * Returns an \OCP\CacheFactory instance
 	 *
-	 * @return \OCP\CacheFactory
+	 * @return \OCP\ICacheFactory
 	 */
 	function getMemCacheFactory() {
 		return $this->query('MemCacheFactory');
@@ -364,4 +376,13 @@ class Server extends SimpleContainer implements IServerContainer {
 	function getJobList(){
 		return $this->query('JobList');
 	}
+
+	/**
+	 * Returns a router for generating and matching urls
+	 *
+	 * @return \OCP\Route\IRouter
+	 */
+	function getRouter(){
+		return $this->query('Router');
+	}
 }
diff --git a/lib/private/session/internal.php b/lib/private/session/internal.php
index a7c9e2fdefd..42ec9606dc9 100644
--- a/lib/private/session/internal.php
+++ b/lib/private/session/internal.php
@@ -26,8 +26,7 @@ class Internal extends Memory {
 	}
 
 	public function __destruct() {
-		$_SESSION = array_merge($_SESSION, $this->data);
-		session_write_close();
+		$this->close();
 	}
 
 	/**
@@ -47,4 +46,15 @@ class Internal extends Memory {
 		@session_start();
 		$this->data = $_SESSION = array();
 	}
+
+	public function close() {
+		$_SESSION = array_merge($_SESSION, $this->data);
+		session_write_close();
+
+		parent::close();
+	}
+
+    public function reopen() {
+        throw new \Exception('The session cannot be reopened - reopen() is ony to be used in unit testing.');
+    }
 }
diff --git a/lib/private/session/memory.php b/lib/private/session/memory.php
index 1b9ac452575..1497c0f8928 100644
--- a/lib/private/session/memory.php
+++ b/lib/private/session/memory.php
@@ -28,6 +28,7 @@ class Memory extends Session {
 	 * @param integer $value
 	 */
 	public function set($key, $value) {
+		$this->validateSession();
 		$this->data[$key] = $value;
 	}
 
@@ -54,10 +55,29 @@ class Memory extends Session {
 	 * @param string $key
 	 */
 	public function remove($key) {
+		$this->validateSession();
 		unset($this->data[$key]);
 	}
 
 	public function clear() {
 		$this->data = array();
 	}
+
+	/**
+	 * Helper function for PHPUnit execution - don't use in non-test code
+	 */
+	public function reopen() {
+		$this->sessionClosed = false;
+	}
+
+	/**
+	 * In case the session has already been locked an exception will be thrown
+	 *
+	 * @throws \Exception
+	 */
+	private function validateSession() {
+		if ($this->sessionClosed) {
+			throw new \Exception('Session has been closed - no further changes to the session as allowed');
+		}
+	}
 }
diff --git a/lib/private/session/session.php b/lib/private/session/session.php
index fe160faa267..6f6c804f384 100644
--- a/lib/private/session/session.php
+++ b/lib/private/session/session.php
@@ -13,6 +13,11 @@ use OCP\ISession;
 abstract class Session implements \ArrayAccess, ISession {
 
 	/**
+	 * @var bool
+	 */
+	protected $sessionClosed = false;
+
+	/**
 	 * $name serves as a namespace for the session keys
 	 *
 	 * @param string $name
@@ -49,4 +54,11 @@ abstract class Session implements \ArrayAccess, ISession {
 	public function offsetUnset($offset) {
 		$this->remove($offset);
 	}
+
+	/**
+	 * Close the session and release the lock
+	 */
+	public function close() {
+		$this->sessionClosed = true;
+	}
 }
diff --git a/lib/private/setup.php b/lib/private/setup.php
index 3906204bda3..b1061b3a25b 100644
--- a/lib/private/setup.php
+++ b/lib/private/setup.php
@@ -106,6 +106,10 @@ class OC_Setup {
 			//guess what this does
 			OC_Installer::installShippedApps();
 
+			// create empty file in data dir, so we can later find
+			// out that this is indeed an ownCloud data directory
+			file_put_contents(OC_Config::getValue('datadirectory', OC::$SERVERROOT.'/data').'/.ocdata', '');
+
 			//create htaccess files for apache hosts
 			if (isset($_SERVER['SERVER_SOFTWARE']) && strstr($_SERVER['SERVER_SOFTWARE'], 'Apache')) {
 				self::createHtaccess();
@@ -147,7 +151,7 @@ class OC_Setup {
 		$content.= "RewriteRule ^.well-known/host-meta /public.php?service=host-meta [QSA,L]\n";
 		$content.= "RewriteRule ^.well-known/carddav /remote.php/carddav/ [R]\n";
 		$content.= "RewriteRule ^.well-known/caldav /remote.php/caldav/ [R]\n";
-		$content.= "RewriteRule ^apps/([^/]*)/(.*\.(css|php))$ index.php?app=$1&getfile=$2 [QSA,L]\n";
+		$content.= "RewriteRule ^apps/([^/]*)/(.*\.(php))$ index.php?app=$1&getfile=$2 [QSA,L]\n";
 		$content.= "RewriteRule ^remote/(.*) remote.php [QSA,L]\n";
 		$content.= "</IfModule>\n";
 		$content.= "<IfModule mod_mime.c>\n";
diff --git a/lib/private/setup/postgresql.php b/lib/private/setup/postgresql.php
index 89d328ada19..4d0c9b52a4d 100644
--- a/lib/private/setup/postgresql.php
+++ b/lib/private/setup/postgresql.php
@@ -10,13 +10,20 @@ class PostgreSQL extends AbstractDatabase {
 		$e_user = addslashes($this->dbuser);
 		$e_password = addslashes($this->dbpassword);
 
+		// Fix database with port connection
+		if(strpos($e_host, ':')) {
+			list($e_host, $port)=explode(':', $e_host, 2);
+		} else {
+			$port=false;
+		}
+
 		//check if the database user has admin rights
-		$connection_string = "host='$e_host' dbname=postgres user='$e_user' password='$e_password'";
+		$connection_string = "host='$e_host' dbname=postgres user='$e_user' port='$port' password='$e_password'";
 		$connection = @pg_connect($connection_string);
 		if(!$connection) {
 			// Try if we can connect to the DB with the specified name
 			$e_dbname = addslashes($this->dbname);
-			$connection_string = "host='$e_host' dbname='$e_dbname' user='$e_user' password='$e_password'";
+			$connection_string = "host='$e_host' dbname='$e_dbname' user='$e_user' port='$port' password='$e_password'";
 			$connection = @pg_connect($connection_string);
 
 			if(!$connection)
@@ -63,7 +70,14 @@ class PostgreSQL extends AbstractDatabase {
 		$e_user = addslashes($this->dbuser);
 		$e_password = addslashes($this->dbpassword);
 
-		$connection_string = "host='$e_host' dbname='$e_dbname' user='$e_user' password='$e_password'";
+        	// Fix database with port connection
+		if(strpos($e_host, ':')) {
+			list($e_host, $port)=explode(':', $e_host, 2);
+		} else {
+			$port=false;
+		}
+
+		$connection_string = "host='$e_host' dbname='$e_dbname' user='$e_user' port='$port' password='$e_password'";
 		$connection = @pg_connect($connection_string);
 		if(!$connection) {
 			throw new \DatabaseSetupException($this->trans->t('PostgreSQL username and/or password not valid'),
diff --git a/lib/private/share/constants.php b/lib/private/share/constants.php
new file mode 100644
index 00000000000..7e4223d10fa
--- /dev/null
+++ b/lib/private/share/constants.php
@@ -0,0 +1,44 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Bjoern Schiessle
+ * @copyright 2014 Bjoern Schiessle <schiessle@owncloud.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Share;
+
+class Constants {
+
+	const SHARE_TYPE_USER = 0;
+	const SHARE_TYPE_GROUP = 1;
+	const SHARE_TYPE_LINK = 3;
+	const SHARE_TYPE_EMAIL = 4;
+	const SHARE_TYPE_CONTACT = 5;
+	const SHARE_TYPE_REMOTE = 6;
+
+	const FORMAT_NONE = -1;
+	const FORMAT_STATUSES = -2;
+	const FORMAT_SOURCES = -3;
+
+	const TOKEN_LENGTH = 32; // see db_structure.xml
+
+	protected static $shareTypeUserAndGroups = -1;
+	protected static $shareTypeGroupUserUnique = 2;
+	protected static $backends = array();
+	protected static $backendTypes = array();
+	protected static $isResharingAllowed;
+}
diff --git a/lib/private/share/helper.php b/lib/private/share/helper.php
new file mode 100644
index 00000000000..fde55667281
--- /dev/null
+++ b/lib/private/share/helper.php
@@ -0,0 +1,202 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Bjoern Schiessle
+ * @copyright 2014 Bjoern Schiessle <schiessle@owncloud.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Share;
+
+class Helper extends \OC\Share\Constants {
+
+	/**
+	 * Generate a unique target for the item
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param string User or group the item is being shared with
+	 * @param string User that is the owner of shared item
+	 * @param string The suggested target originating from a reshare (optional)
+	 * @param int The id of the parent group share (optional)
+	 * @return string Item target
+	 */
+	public static function generateTarget($itemType, $itemSource, $shareType, $shareWith, $uidOwner,
+		$suggestedTarget = null, $groupParent = null) {
+		$backend = \OC\Share\Share::getBackend($itemType);
+		if ($shareType == self::SHARE_TYPE_LINK) {
+			if (isset($suggestedTarget)) {
+				return $suggestedTarget;
+			}
+			return $backend->generateTarget($itemSource, false);
+		} else {
+			if ($itemType == 'file' || $itemType == 'folder') {
+				$column = 'file_target';
+				$columnSource = 'file_source';
+			} else {
+				$column = 'item_target';
+				$columnSource = 'item_source';
+			}
+			if ($shareType == self::SHARE_TYPE_USER) {
+				// Share with is a user, so set share type to user and groups
+				$shareType = self::$shareTypeUserAndGroups;
+				$userAndGroups = array_merge(array($shareWith), \OC_Group::getUserGroups($shareWith));
+			} else {
+				$userAndGroups = false;
+			}
+			$exclude = null;
+			// Backend has 3 opportunities to generate a unique target
+			for ($i = 0; $i < 2; $i++) {
+				// Check if suggested target exists first
+				if ($i == 0 && isset($suggestedTarget)) {
+					$target = $suggestedTarget;
+				} else {
+					if ($shareType == self::SHARE_TYPE_GROUP) {
+						$target = $backend->generateTarget($itemSource, false, $exclude);
+					} else {
+						$target = $backend->generateTarget($itemSource, $shareWith, $exclude);
+					}
+					if (is_array($exclude) && in_array($target, $exclude)) {
+						break;
+					}
+				}
+				// Check if target already exists
+				$checkTarget = \OC\Share\Share::getItems($itemType, $target, $shareType, $shareWith);
+				if (!empty($checkTarget)) {
+					foreach ($checkTarget as $item) {
+						// Skip item if it is the group parent row
+						if (isset($groupParent) && $item['id'] == $groupParent) {
+							if (count($checkTarget) == 1) {
+								return $target;
+							} else {
+								continue;
+							}
+						}
+						if ($item['uid_owner'] == $uidOwner) {
+							if ($itemType == 'file' || $itemType == 'folder') {
+								$meta = \OC\Files\Filesystem::getFileInfo($itemSource);
+								if ($item['file_source'] == $meta['fileid']) {
+									return $target;
+								}
+							} else if ($item['item_source'] == $itemSource) {
+								return $target;
+							}
+						}
+					}
+					if (!isset($exclude)) {
+						$exclude = array();
+					}
+					// Find similar targets to improve backend's chances to generate a unqiue target
+					if ($userAndGroups) {
+						if ($column == 'file_target') {
+							$checkTargets = \OC_DB::prepare('SELECT `'.$column.'` FROM `*PREFIX*share`'
+								.' WHERE `item_type` IN (\'file\', \'folder\')'
+								.' AND `share_type` IN (?,?,?)'
+								.' AND `share_with` IN (\''.implode('\',\'', $userAndGroups).'\')');
+							$result = $checkTargets->execute(array(self::SHARE_TYPE_USER, self::SHARE_TYPE_GROUP,
+								self::$shareTypeGroupUserUnique));
+						} else {
+							$checkTargets = \OC_DB::prepare('SELECT `'.$column.'` FROM `*PREFIX*share`'
+								.' WHERE `item_type` = ? AND `share_type` IN (?,?,?)'
+								.' AND `share_with` IN (\''.implode('\',\'', $userAndGroups).'\')');
+							$result = $checkTargets->execute(array($itemType, self::SHARE_TYPE_USER,
+								self::SHARE_TYPE_GROUP, self::$shareTypeGroupUserUnique));
+						}
+					} else {
+						if ($column == 'file_target') {
+							$checkTargets = \OC_DB::prepare('SELECT `'.$column.'` FROM `*PREFIX*share`'
+								.' WHERE `item_type` IN (\'file\', \'folder\')'
+								.' AND `share_type` = ? AND `share_with` = ?');
+							$result = $checkTargets->execute(array(self::SHARE_TYPE_GROUP, $shareWith));
+						} else {
+							$checkTargets = \OC_DB::prepare('SELECT `'.$column.'` FROM `*PREFIX*share`'
+								.' WHERE `item_type` = ? AND `share_type` = ? AND `share_with` = ?');
+							$result = $checkTargets->execute(array($itemType, self::SHARE_TYPE_GROUP, $shareWith));
+						}
+					}
+					while ($row = $result->fetchRow()) {
+						$exclude[] = $row[$column];
+					}
+				} else {
+					return $target;
+				}
+			}
+		}
+		$message = 'Sharing backend registered for '.$itemType.' did not generate a unique target for '.$itemSource;
+		\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+		throw new \Exception($message);
+	}
+
+	/**
+	 * Delete all reshares of an item
+	 * @param int Id of item to delete
+	 * @param bool If true, exclude the parent from the delete (optional)
+	 * @param string The user that the parent was shared with (optinal)
+	 */
+	public static function delete($parent, $excludeParent = false, $uidOwner = null) {
+		$ids = array($parent);
+		$parents = array($parent);
+		while (!empty($parents)) {
+			$parents = "'".implode("','", $parents)."'";
+			// Check the owner on the first search of reshares, useful for
+			// finding and deleting the reshares by a single user of a group share
+			if (count($ids) == 1 && isset($uidOwner)) {
+				$query = \OC_DB::prepare('SELECT `id`, `uid_owner`, `item_type`, `item_target`, `parent`'
+					.' FROM `*PREFIX*share` WHERE `parent` IN ('.$parents.') AND `uid_owner` = ?');
+				$result = $query->execute(array($uidOwner));
+			} else {
+				$query = \OC_DB::prepare('SELECT `id`, `item_type`, `item_target`, `parent`, `uid_owner`'
+					.' FROM `*PREFIX*share` WHERE `parent` IN ('.$parents.')');
+				$result = $query->execute();
+			}
+			// Reset parents array, only go through loop again if items are found
+			$parents = array();
+			while ($item = $result->fetchRow()) {
+				// Search for a duplicate parent share, this occurs when an
+				// item is shared to the same user through a group and user or the
+				// same item is shared by different users
+				$userAndGroups = array_merge(array($item['uid_owner']), \OC_Group::getUserGroups($item['uid_owner']));
+				$query = \OC_DB::prepare('SELECT `id`, `permissions` FROM `*PREFIX*share`'
+					.' WHERE `item_type` = ?'
+					.' AND `item_target` = ?'
+					.' AND `share_type` IN (?,?,?)'
+					.' AND `share_with` IN (\''.implode('\',\'', $userAndGroups).'\')'
+					.' AND `uid_owner` != ? AND `id` != ?');
+				$duplicateParent = $query->execute(array($item['item_type'], $item['item_target'],
+					self::SHARE_TYPE_USER, self::SHARE_TYPE_GROUP, self::$shareTypeGroupUserUnique,
+					$item['uid_owner'], $item['parent']))->fetchRow();
+				if ($duplicateParent) {
+					// Change the parent to the other item id if share permission is granted
+					if ($duplicateParent['permissions'] & \OCP\PERMISSION_SHARE) {
+						$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `parent` = ? WHERE `id` = ?');
+						$query->execute(array($duplicateParent['id'], $item['id']));
+						continue;
+					}
+				}
+				$ids[] = $item['id'];
+				$parents[] = $item['id'];
+			}
+		}
+		if ($excludeParent) {
+			unset($ids[0]);
+		}
+		if (!empty($ids)) {
+			$ids = "'".implode("','", $ids)."'";
+			$query = \OC_DB::prepare('DELETE FROM `*PREFIX*share` WHERE `id` IN ('.$ids.')');
+			$query->execute();
+		}
+	}
+}
diff --git a/lib/private/share/hooks.php b/lib/private/share/hooks.php
new file mode 100644
index 00000000000..a33c71eedd2
--- /dev/null
+++ b/lib/private/share/hooks.php
@@ -0,0 +1,108 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Bjoern Schiessle
+ * @copyright 2014 Bjoern Schiessle <schiessle@owncloud.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU AFFERO GENERAL PUBLIC LICENSE for more details.
+ *
+ * You should have received a copy of the GNU Affero General Public
+ * License along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Share;
+
+class Hooks extends \OC\Share\Constants {
+		/**
+	 * Function that is called after a user is deleted. Cleans up the shares of that user.
+	 * @param array arguments
+	 */
+	public static function post_deleteUser($arguments) {
+		// Delete any items shared with the deleted user
+		$query = \OC_DB::prepare('DELETE FROM `*PREFIX*share`'
+			.' WHERE `share_with` = ? AND `share_type` = ? OR `share_type` = ?');
+		$result = $query->execute(array($arguments['uid'], self::SHARE_TYPE_USER, self::$shareTypeGroupUserUnique));
+		// Delete any items the deleted user shared
+		$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*share` WHERE `uid_owner` = ?');
+		$result = $query->execute(array($arguments['uid']));
+		while ($item = $result->fetchRow()) {
+			Helper::delete($item['id']);
+		}
+	}
+
+	/**
+	 * Function that is called after a user is added to a group.
+	 * TODO what does it do?
+	 * @param array arguments
+	 */
+	public static function post_addToGroup($arguments) {
+		// Find the group shares and check if the user needs a unique target
+		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share` WHERE `share_type` = ? AND `share_with` = ?');
+		$result = $query->execute(array(self::SHARE_TYPE_GROUP, $arguments['gid']));
+		$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`item_type`, `item_source`,'
+			.' `item_target`, `parent`, `share_type`, `share_with`, `uid_owner`, `permissions`,'
+			.' `stime`, `file_source`, `file_target`) VALUES (?,?,?,?,?,?,?,?,?,?,?)');
+		while ($item = $result->fetchRow()) {
+			if ($item['item_type'] == 'file' || $item['item_type'] == 'file') {
+				$itemTarget = null;
+			} else {
+				$itemTarget = Helper::generateTarget($item['item_type'], $item['item_source'], self::SHARE_TYPE_USER,
+						$arguments['uid'], $item['uid_owner'], $item['item_target'], $item['id']);
+			}
+			if (isset($item['file_source'])) {
+				$fileTarget = Helper::generateTarget($item['item_type'], $item['item_source'], self::SHARE_TYPE_USER,
+					$arguments['uid'], $item['uid_owner'], $item['file_target'], $item['id']);
+			} else {
+				$fileTarget = null;
+			}
+			// Insert an extra row for the group share if the item or file target is unique for this user
+			if ($itemTarget != $item['item_target'] || $fileTarget != $item['file_target']) {
+				$query->execute(array($item['item_type'], $item['item_source'], $itemTarget, $item['id'],
+					self::$shareTypeGroupUserUnique, $arguments['uid'], $item['uid_owner'], $item['permissions'],
+					$item['stime'], $item['file_source'], $fileTarget));
+				\OC_DB::insertid('*PREFIX*share');
+			}
+		}
+	}
+
+	/**
+	 * Function that is called after a user is removed from a group. Shares are cleaned up.
+	 * @param array arguments
+	 */
+	public static function post_removeFromGroup($arguments) {
+		$sql = 'SELECT `id`, `share_type` FROM `*PREFIX*share`'
+			.' WHERE (`share_type` = ? AND `share_with` = ?) OR (`share_type` = ? AND `share_with` = ?)';
+		$result = \OC_DB::executeAudited($sql, array(self::SHARE_TYPE_GROUP, $arguments['gid'],
+			self::$shareTypeGroupUserUnique, $arguments['uid']));
+		while ($item = $result->fetchRow()) {
+			if ($item['share_type'] == self::SHARE_TYPE_GROUP) {
+				// Delete all reshares by this user of the group share
+				Helper::delete($item['id'], true, $arguments['uid']);
+			} else {
+				Helper::delete($item['id']);
+			}
+		}
+	}
+
+	/**
+	 * Function that is called after a group is removed. Cleans up the shares to that group.
+	 * @param array arguments
+	 */
+	public static function post_deleteGroup($arguments) {
+		$sql = 'SELECT `id` FROM `*PREFIX*share` WHERE `share_type` = ? AND `share_with` = ?';
+		$result = \OC_DB::executeAudited($sql, array(self::SHARE_TYPE_GROUP, $arguments['gid']));
+		while ($item = $result->fetchRow()) {
+			Helper::delete($item['id']);
+		}
+	}
+
+}
diff --git a/lib/private/share/mailnotifications.php b/lib/private/share/mailnotifications.php
index afbf35aa397..4799db52330 100644
--- a/lib/private/share/mailnotifications.php
+++ b/lib/private/share/mailnotifications.php
@@ -96,7 +96,7 @@ class MailNotifications {
 			try {
 				\OCP\Util::sendMail($to, $recipientDisplayName, $subject, $htmlMail, $this->from, $this->senderDisplayName, 1, $alttextMail);
 			} catch (\Exception $e) {
-				\OCP\Util::writeLog('sharing', "Can't send mail to inform the user abaut an internal share: " . $e->getMessage() , \OCP\Util::ERROR);
+				\OCP\Util::writeLog('sharing', "Can't send mail to inform the user about an internal share: " . $e->getMessage() , \OCP\Util::ERROR);
 				$noMail[] = $recipientDisplayName;
 			}
 		}
@@ -108,23 +108,26 @@ class MailNotifications {
 	/**
 	 * @brief inform recipient about public link share
 	 *
-	 * @param string recipient recipient email address
+	 * @param string $recipient recipient email address
 	 * @param string $filename the shared file
 	 * @param string $link the public link
 	 * @param int $expiration expiration date (timestamp)
-	 * @return string|boolean $result true or error message
+	 * @return array $result of failed recipients
 	 */
 	public function sendLinkShareMail($recipient, $filename, $link, $expiration) {
 		$subject = (string)$this->l->t('%s shared »%s« with you', array($this->senderDisplayName, $filename));
 		list($htmlMail, $alttextMail) = $this->createMailBody($filename, $link, $expiration);
-		try {
-			\OCP\Util::sendMail($recipient, $recipient, $subject, $htmlMail, $this->from, $this->senderDisplayName, 1, $alttextMail);
-		} catch (\Exception $e) {
-			\OCP\Util::writeLog('sharing', "Can't send mail with public link: " . $e->getMessage(), \OCP\Util::ERROR);
-			return $e->getMessage();
+		$rs = explode(' ', $recipient);
+		$failed = array();
+		foreach ($rs as $r) {
+			try {
+				\OCP\Util::sendMail($r, $r, $subject, $htmlMail, $this->from, $this->senderDisplayName, 1, $alttextMail);
+			} catch (\Exception $e) {
+				\OCP\Util::writeLog('sharing', "Can't send mail with public link to $r: " . $e->getMessage(), \OCP\Util::ERROR);
+				$failed[] = $r;
+			}
 		}
-
-		return true;
+		return $failed;
 	}
 
 	/**
diff --git a/lib/private/share/share.php b/lib/private/share/share.php
new file mode 100644
index 00000000000..8238797600e
--- /dev/null
+++ b/lib/private/share/share.php
@@ -0,0 +1,1619 @@
+<?php
+/**
+ * ownCloud
+ *
+ * @author Bjoern Schiessle, Michael Gapczynski
+ * @copyright 2012 Michael Gapczynski <mtgap@owncloud.com>
+ *            2014 Bjoern Schiessle <schiessle@owncloud.com>
+ *
+ * This library is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU AFFERO GENERAL PUBLIC LICENSE
+ * License as published by the Free Software Foundation; either
+ * version 3 of the License, or any later version.
+ *
+ * This library 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 along with this library.  If not, see <http://www.gnu.org/licenses/>.
+ */
+
+namespace OC\Share;
+
+/**
+ * This class provides the ability for apps to share their content between users.
+ * Apps must create a backend class that implements OCP\Share_Backend and register it with this class.
+ *
+ * It provides the following hooks:
+ *  - post_shared
+ */
+class Share extends \OC\Share\Constants {
+
+	/** CRUDS permissions (Create, Read, Update, Delete, Share) using a bitmask
+	 * Construct permissions for share() and setPermissions with Or (|) e.g.
+	 * Give user read and update permissions: PERMISSION_READ | PERMISSION_UPDATE
+	 *
+	 * Check if permission is granted with And (&) e.g. Check if delete is
+	 * granted: if ($permissions & PERMISSION_DELETE)
+	 *
+	 * Remove permissions with And (&) and Not (~) e.g. Remove the update
+	 * permission: $permissions &= ~PERMISSION_UPDATE
+	 *
+	 * Apps are required to handle permissions on their own, this class only
+	 * stores and manages the permissions of shares
+	 * @see lib/public/constants.php
+	 */
+
+	/**
+	 * Register a sharing backend class that implements OCP\Share_Backend for an item type
+	 * @param string Item type
+	 * @param string Backend class
+	 * @param string (optional) Depends on item type
+	 * @param array (optional) List of supported file extensions if this item type depends on files
+	 * @return Returns true if backend is registered or false if error
+	 */
+	public static function registerBackend($itemType, $class, $collectionOf = null, $supportedFileExtensions = null) {
+		if (self::isEnabled()) {
+			if (!isset(self::$backendTypes[$itemType])) {
+				self::$backendTypes[$itemType] = array(
+					'class' => $class,
+					'collectionOf' => $collectionOf,
+					'supportedFileExtensions' => $supportedFileExtensions
+				);
+				if(count(self::$backendTypes) === 1) {
+					\OC_Util::addScript('core', 'share');
+					\OC_Util::addStyle('core', 'share');
+				}
+				return true;
+			}
+			\OC_Log::write('OCP\Share',
+				'Sharing backend '.$class.' not registered, '.self::$backendTypes[$itemType]['class']
+				.' is already registered for '.$itemType,
+				\OC_Log::WARN);
+		}
+		return false;
+	}
+
+	/**
+	 * Check if the Share API is enabled
+	 * @return Returns true if enabled or false
+	 *
+	 * The Share API is enabled by default if not configured
+	 */
+	public static function isEnabled() {
+		if (\OC_Appconfig::getValue('core', 'shareapi_enabled', 'yes') == 'yes') {
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Find which users can access a shared item
+	 * @param $path to the file
+	 * @param $user owner of the file
+	 * @param include owner to the list of users with access to the file
+	 * @return array
+	 * @note $path needs to be relative to user data dir, e.g. 'file.txt'
+	 *       not '/admin/data/file.txt'
+	 */
+	public static function getUsersSharingFile($path, $user, $includeOwner = false) {
+
+		$shares = array();
+		$publicShare = false;
+		$source = -1;
+		$cache = false;
+
+		$view = new \OC\Files\View('/' . $user . '/files');
+		if ($view->file_exists($path)) {
+			$meta = $view->getFileInfo($path);
+		} else {
+			// if the file doesn't exists yet we start with the parent folder
+			$meta = $view->getFileInfo(dirname($path));
+		}
+
+		if($meta !== false) {
+			$source = $meta['fileid'];
+			$cache = new \OC\Files\Cache\Cache($meta['storage']);
+		}
+
+		while ($source !== -1) {
+
+			// Fetch all shares with another user
+			$query = \OC_DB::prepare(
+				'SELECT `share_with`
+				FROM
+				`*PREFIX*share`
+				WHERE
+				`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
+			);
+
+			$result = $query->execute(array($source, self::SHARE_TYPE_USER));
+
+			if (\OCP\DB::isError($result)) {
+				\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+			} else {
+				while ($row = $result->fetchRow()) {
+					$shares[] = $row['share_with'];
+				}
+			}
+			// We also need to take group shares into account
+
+			$query = \OC_DB::prepare(
+				'SELECT `share_with`
+				FROM
+				`*PREFIX*share`
+				WHERE
+				`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
+			);
+
+			$result = $query->execute(array($source, self::SHARE_TYPE_GROUP));
+
+			if (\OCP\DB::isError($result)) {
+				\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+			} else {
+				while ($row = $result->fetchRow()) {
+					$usersInGroup = \OC_Group::usersInGroup($row['share_with']);
+					$shares = array_merge($shares, $usersInGroup);
+				}
+			}
+
+			//check for public link shares
+			if (!$publicShare) {
+				$query = \OC_DB::prepare(
+					'SELECT `share_with`
+					FROM
+					`*PREFIX*share`
+					WHERE
+					`item_source` = ? AND `share_type` = ? AND `item_type` IN (\'file\', \'folder\')'
+				);
+
+				$result = $query->execute(array($source, self::SHARE_TYPE_LINK));
+
+				if (\OCP\DB::isError($result)) {
+					\OCP\Util::writeLog('OCP\Share', \OC_DB::getErrorMessage($result), \OC_Log::ERROR);
+				} else {
+					if ($result->fetchRow()) {
+						$publicShare = true;
+					}
+				}
+			}
+
+			// let's get the parent for the next round
+			$meta = $cache->get((int)$source);
+			if($meta !== false) {
+				$source = (int)$meta['parent'];
+			} else {
+				$source = -1;
+			}
+		}
+		// Include owner in list of users, if requested
+		if ($includeOwner) {
+			$shares[] = $user;
+		}
+
+		return array("users" => array_unique($shares), "public" => $publicShare);
+	}
+
+	/**
+	 * Get the items of item type shared with the current user
+	 * @param string Item type
+	 * @param int Format (optional) Format type must be defined by the backend
+	 * @param mixed Parameters (optional)
+	 * @param int Number of items to return (optional) Returns all by default
+	 * @param bool include collections (optional)
+	 * @return Return depends on format
+	 */
+	public static function getItemsSharedWith($itemType, $format = self::FORMAT_NONE,
+		$parameters = null, $limit = -1, $includeCollections = false) {
+		return self::getItems($itemType, null, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
+			$parameters, $limit, $includeCollections);
+	}
+
+	/**
+	 * Get the item of item type shared with the current user
+	 * @param string $itemType
+	 * @param string $itemTarget
+	 * @param int $format (optional) Format type must be defined by the backend
+	 * @param mixed Parameters (optional)
+	 * @param bool include collections (optional)
+	 * @return Return depends on format
+	 */
+	public static function getItemSharedWith($itemType, $itemTarget, $format = self::FORMAT_NONE,
+		$parameters = null, $includeCollections = false) {
+		return self::getItems($itemType, $itemTarget, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
+			$parameters, 1, $includeCollections);
+	}
+
+	/**
+	 * Get the item of item type shared with a given user by source
+	 * @param string $itemType
+	 * @param string $itemSource
+	 * @param string $user User user to whom the item was shared
+	 * @return array Return list of items with file_target, permissions and expiration
+	 */
+	public static function getItemSharedWithUser($itemType, $itemSource, $user) {
+
+		$shares = array();
+
+		// first check if there is a db entry for the specific user
+		$query = \OC_DB::prepare(
+				'SELECT `file_target`, `permissions`, `expiration`
+					FROM
+					`*PREFIX*share`
+					WHERE
+					`item_source` = ? AND `item_type` = ? AND `share_with` = ?'
+				);
+
+		$result = \OC_DB::executeAudited($query, array($itemSource, $itemType, $user));
+
+		while ($row = $result->fetchRow()) {
+			$shares[] = $row;
+		}
+
+		//if didn't found a result than let's look for a group share.
+		if(empty($shares)) {
+			$groups = \OC_Group::getUserGroups($user);
+
+			$query = \OC_DB::prepare(
+					'SELECT `file_target`, `permissions`, `expiration`
+						FROM
+						`*PREFIX*share`
+						WHERE
+						`item_source` = ? AND `item_type` = ? AND `share_with` in (?)'
+					);
+
+			$result = \OC_DB::executeAudited($query, array($itemSource, $itemType, implode(',', $groups)));
+
+			while ($row = $result->fetchRow()) {
+				$shares[] = $row;
+			}
+		}
+
+		return $shares;
+
+	}
+
+	/**
+	 * Get the item of item type shared with the current user by source
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int Format (optional) Format type must be defined by the backend
+	 * @param mixed Parameters
+	 * @param bool include collections
+	 * @return Return depends on format
+	 */
+	public static function getItemSharedWithBySource($itemType, $itemSource, $format = self::FORMAT_NONE,
+		$parameters = null, $includeCollections = false) {
+		return self::getItems($itemType, $itemSource, self::$shareTypeUserAndGroups, \OC_User::getUser(), null, $format,
+			$parameters, 1, $includeCollections, true);
+	}
+
+	/**
+	 * Get the item of item type shared by a link
+	 * @param string Item type
+	 * @param string Item source
+	 * @param string Owner of link
+	 * @return Item
+	 */
+	public static function getItemSharedWithByLink($itemType, $itemSource, $uidOwner) {
+		return self::getItems($itemType, $itemSource, self::SHARE_TYPE_LINK, null, $uidOwner, self::FORMAT_NONE,
+			null, 1);
+	}
+
+	/**
+	 * Based on the given token the share information will be returned - password protected shares will be verified
+	 * @param string $token
+	 * @return array | bool false will be returned in case the token is unknown or unauthorized
+	 */
+	public static function getShareByToken($token, $checkPasswordProtection = true) {
+		$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share` WHERE `token` = ?', 1);
+		$result = $query->execute(array($token));
+		if (\OC_DB::isError($result)) {
+			\OC_Log::write('OCP\Share', \OC_DB::getErrorMessage($result) . ', token=' . $token, \OC_Log::ERROR);
+		}
+		$row = $result->fetchRow();
+		if ($row === false) {
+			return false;
+		}
+		if (is_array($row) and self::expireItem($row)) {
+			return false;
+		}
+
+		// password protected shares need to be authenticated
+		if ($checkPasswordProtection && !\OCP\Share::checkPasswordProtectedShare($row)) {
+			return false;
+		}
+
+		return $row;
+	}
+
+	/**
+	 * resolves reshares down to the last real share
+	 * @param $linkItem
+	 * @return $fileOwner
+	 */
+	public static function resolveReShare($linkItem)
+	{
+		if (isset($linkItem['parent'])) {
+			$parent = $linkItem['parent'];
+			while (isset($parent)) {
+				$query = \OC_DB::prepare('SELECT * FROM `*PREFIX*share` WHERE `id` = ?', 1);
+				$item = $query->execute(array($parent))->fetchRow();
+				if (isset($item['parent'])) {
+					$parent = $item['parent'];
+				} else {
+					return $item;
+				}
+			}
+		}
+		return $linkItem;
+	}
+
+
+	/**
+	 * Get the shared items of item type owned by the current user
+	 * @param string Item type
+	 * @param int Format (optional) Format type must be defined by the backend
+	 * @param mixed Parameters
+	 * @param int Number of items to return (optional) Returns all by default
+	 * @param bool include collections
+	 * @return Return depends on format
+	 */
+	public static function getItemsShared($itemType, $format = self::FORMAT_NONE, $parameters = null,
+		$limit = -1, $includeCollections = false) {
+		return self::getItems($itemType, null, null, null, \OC_User::getUser(), $format,
+			$parameters, $limit, $includeCollections);
+	}
+
+	/**
+	 * Get the shared item of item type owned by the current user
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int Format (optional) Format type must be defined by the backend
+	 * @param mixed Parameters
+	 * @param bool include collections
+	 * @return Return depends on format
+	 */
+	public static function getItemShared($itemType, $itemSource, $format = self::FORMAT_NONE,
+	                                     $parameters = null, $includeCollections = false) {
+		return self::getItems($itemType, $itemSource, null, null, \OC_User::getUser(), $format,
+			$parameters, -1, $includeCollections);
+	}
+
+	/**
+	 * Get all users an item is shared with
+	 * @param string Item type
+	 * @param string Item source
+	 * @param string Owner
+	 * @param bool Include collections
+	 * @praram bool check expire date
+	 * @return Return array of users
+	 */
+	public static function getUsersItemShared($itemType, $itemSource, $uidOwner, $includeCollections = false, $checkExpireDate = true) {
+
+		$users = array();
+		$items = self::getItems($itemType, $itemSource, null, null, $uidOwner, self::FORMAT_NONE, null, -1, $includeCollections, false, $checkExpireDate);
+		if ($items) {
+			foreach ($items as $item) {
+				if ((int)$item['share_type'] === self::SHARE_TYPE_USER) {
+					$users[] = $item['share_with'];
+				} else if ((int)$item['share_type'] === self::SHARE_TYPE_GROUP) {
+					$users = array_merge($users, \OC_Group::usersInGroup($item['share_with']));
+				}
+			}
+		}
+		return $users;
+	}
+
+	/**
+	 * Share an item with a user, group, or via private link
+	 * @param string $itemType
+	 * @param string $itemSource
+	 * @param int $shareType SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param string $shareWith User or group the item is being shared with
+	 * @param int $permissions CRUDS
+	 * @param null $itemSourceName
+	 * @throws \Exception
+	 * @internal param \OCP\Item $string type
+	 * @internal param \OCP\Item $string source
+	 * @internal param \OCP\SHARE_TYPE_USER $int , SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @internal param \OCP\User $string or group the item is being shared with
+	 * @internal param \OCP\CRUDS $int permissions
+	 * @return bool|string Returns true on success or false on failure, Returns token on success for links
+	 */
+	public static function shareItem($itemType, $itemSource, $shareType, $shareWith, $permissions, $itemSourceName = null) {
+		$uidOwner = \OC_User::getUser();
+		$sharingPolicy = \OC_Appconfig::getValue('core', 'shareapi_share_policy', 'global');
+
+		if (is_null($itemSourceName)) {
+			$itemSourceName = $itemSource;
+		}
+
+		// Verify share type and sharing conditions are met
+		if ($shareType === self::SHARE_TYPE_USER) {
+			if ($shareWith == $uidOwner) {
+				$message = 'Sharing '.$itemSourceName.' failed, because the user '.$shareWith.' is the item owner';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			if (!\OC_User::userExists($shareWith)) {
+				$message = 'Sharing '.$itemSourceName.' failed, because the user '.$shareWith.' does not exist';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			if ($sharingPolicy == 'groups_only') {
+				$inGroup = array_intersect(\OC_Group::getUserGroups($uidOwner), \OC_Group::getUserGroups($shareWith));
+				if (empty($inGroup)) {
+					$message = 'Sharing '.$itemSourceName.' failed, because the user '
+						.$shareWith.' is not a member of any groups that '.$uidOwner.' is a member of';
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+			}
+			// Check if the item source is already shared with the user, either from the same owner or a different user
+			if ($checkExists = self::getItems($itemType, $itemSource, self::$shareTypeUserAndGroups,
+				$shareWith, null, self::FORMAT_NONE, null, 1, true, true)) {
+				// Only allow the same share to occur again if it is the same
+				// owner and is not a user share, this use case is for increasing
+				// permissions for a specific user
+				if ($checkExists['uid_owner'] != $uidOwner || $checkExists['share_type'] == $shareType) {
+					$message = 'Sharing '.$itemSourceName.' failed, because this item is already shared with '.$shareWith;
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+			}
+		} else if ($shareType === self::SHARE_TYPE_GROUP) {
+			if (!\OC_Group::groupExists($shareWith)) {
+				$message = 'Sharing '.$itemSourceName.' failed, because the group '.$shareWith.' does not exist';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			if ($sharingPolicy == 'groups_only' && !\OC_Group::inGroup($uidOwner, $shareWith)) {
+				$message = 'Sharing '.$itemSourceName.' failed, because '
+					.$uidOwner.' is not a member of the group '.$shareWith;
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			// Check if the item source is already shared with the group, either from the same owner or a different user
+			// The check for each user in the group is done inside the put() function
+			if ($checkExists = self::getItems($itemType, $itemSource, self::SHARE_TYPE_GROUP, $shareWith,
+				null, self::FORMAT_NONE, null, 1, true, true)) {
+				// Only allow the same share to occur again if it is the same
+				// owner and is not a group share, this use case is for increasing
+				// permissions for a specific user
+				if ($checkExists['uid_owner'] != $uidOwner || $checkExists['share_type'] == $shareType) {
+					$message = 'Sharing '.$itemSourceName.' failed, because this item is already shared with '.$shareWith;
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+			}
+			// Convert share with into an array with the keys group and users
+			$group = $shareWith;
+			$shareWith = array();
+			$shareWith['group'] = $group;
+			$shareWith['users'] = array_diff(\OC_Group::usersInGroup($group), array($uidOwner));
+		} else if ($shareType === self::SHARE_TYPE_LINK) {
+			if (\OC_Appconfig::getValue('core', 'shareapi_allow_links', 'yes') == 'yes') {
+				// when updating a link share
+				if ($checkExists = self::getItems($itemType, $itemSource, self::SHARE_TYPE_LINK, null,
+					$uidOwner, self::FORMAT_NONE, null, 1)) {
+					// remember old token
+					$oldToken = $checkExists['token'];
+					$oldPermissions = $checkExists['permissions'];
+					//delete the old share
+					Helper::delete($checkExists['id']);
+				}
+
+				// Generate hash of password - same method as user passwords
+				if (isset($shareWith)) {
+					$forcePortable = (CRYPT_BLOWFISH != 1);
+					$hasher = new \PasswordHash(8, $forcePortable);
+					$shareWith = $hasher->HashPassword($shareWith.\OC_Config::getValue('passwordsalt', ''));
+				} else {
+					// reuse the already set password, but only if we change permissions
+					// otherwise the user disabled the password protection
+					if ($checkExists && (int)$permissions !== (int)$oldPermissions) {
+						$shareWith = $checkExists['share_with'];
+					}
+				}
+
+				// Generate token
+				if (isset($oldToken)) {
+					$token = $oldToken;
+				} else {
+					$token = \OC_Util::generateRandomBytes(self::TOKEN_LENGTH);
+				}
+				$result = self::put($itemType, $itemSource, $shareType, $shareWith, $uidOwner, $permissions,
+					null, $token, $itemSourceName);
+				if ($result) {
+					return $token;
+				} else {
+					return false;
+				}
+			}
+			$message = 'Sharing '.$itemSourceName.' failed, because sharing with links is not allowed';
+			\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+			throw new \Exception($message);
+			return false;
+		} else {
+			// Future share types need to include their own conditions
+			$message = 'Share type '.$shareType.' is not valid for '.$itemSource;
+			\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+			throw new \Exception($message);
+		}
+			// Put the item into the database
+			return self::put($itemType, $itemSource, $shareType, $shareWith, $uidOwner, $permissions, null, null, $itemSourceName);
+	}
+
+	/**
+	 * Unshare an item from a user, group, or delete a private link
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param string User or group the item is being shared with
+	 * @return Returns true on success or false on failure
+	 */
+	public static function unshare($itemType, $itemSource, $shareType, $shareWith) {
+		$item = self::getItems($itemType, $itemSource, $shareType, $shareWith, \OC_User::getUser(),self::FORMAT_NONE, null, 1);
+		if (!empty($item)) {
+			self::unshareItem($item);
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Unshare an item from all users, groups, and remove all links
+	 * @param string Item type
+	 * @param string Item source
+	 * @return Returns true on success or false on failure
+	 */
+	public static function unshareAll($itemType, $itemSource) {
+		// Get all of the owners of shares of this item.
+		$query = \OC_DB::prepare( 'SELECT `uid_owner` from `*PREFIX*share` WHERE `item_type`=? AND `item_source`=?' );
+		$result = $query->execute(array($itemType, $itemSource));
+		$shares = array();
+		// Add each owner's shares to the array of all shares for this item.
+		while ($row = $result->fetchRow()) {
+			$shares = array_merge($shares, self::getItems($itemType, $itemSource, null, null, $row['uid_owner']));
+		}
+		if (!empty($shares)) {
+			// Pass all the vars we have for now, they may be useful
+			$hookParams = array(
+				'itemType' => $itemType,
+				'itemSource' => $itemSource,
+				'shares' => $shares,
+			);
+			\OC_Hook::emit('OCP\Share', 'pre_unshareAll', $hookParams);
+			foreach ($shares as $share) {
+				self::unshareItem($share);
+			}
+			\OC_Hook::emit('OCP\Share', 'post_unshareAll', $hookParams);
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Unshare an item shared with the current user
+	 * @param string Item type
+	 * @param string Item target
+	 * @return Returns true on success or false on failure
+	 *
+	 * Unsharing from self is not allowed for items inside collections
+	 */
+	public static function unshareFromSelf($itemType, $itemTarget) {
+		$item = self::getItemSharedWith($itemType, $itemTarget);
+		if (!empty($item)) {
+			if ((int)$item['share_type'] === self::SHARE_TYPE_GROUP) {
+				// Insert an extra row for the group share and set permission
+				// to 0 to prevent it from showing up for the user
+				$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share`'
+					.' (`item_type`, `item_source`, `item_target`, `parent`, `share_type`,'
+					.' `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`, `file_target`)'
+					.' VALUES (?,?,?,?,?,?,?,?,?,?,?)');
+				$query->execute(array($item['item_type'], $item['item_source'], $item['item_target'],
+					$item['id'], self::$shareTypeGroupUserUnique,
+					\OC_User::getUser(), $item['uid_owner'], 0, $item['stime'], $item['file_source'],
+					$item['file_target']));
+				\OC_DB::insertid('*PREFIX*share');
+				// Delete all reshares by this user of the group share
+				Helper::delete($item['id'], true, \OC_User::getUser());
+			} else if ((int)$item['share_type'] === self::$shareTypeGroupUserUnique) {
+				// Set permission to 0 to prevent it from showing up for the user
+				$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = ? WHERE `id` = ?');
+				$query->execute(array(0, $item['id']));
+				Helper::delete($item['id'], true);
+			} else {
+				Helper::delete($item['id']);
+			}
+			return true;
+		}
+		return false;
+	}
+	/**
+	 * sent status if users got informed by mail about share
+	 * @param string $itemType
+	 * @param string $itemSource
+	 * @param int $shareType SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param bool $status
+	 */
+	public static function setSendMailStatus($itemType, $itemSource, $shareType, $status) {
+		$status = $status ? 1 : 0;
+
+		$query = \OC_DB::prepare(
+				'UPDATE `*PREFIX*share`
+					SET `mail_send` = ?
+					WHERE `item_type` = ? AND `item_source` = ? AND `share_type` = ?');
+
+		$result = $query->execute(array($status, $itemType, $itemSource, $shareType));
+
+		if($result === false) {
+			\OC_Log::write('OCP\Share', 'Couldn\'t set send mail status', \OC_Log::ERROR);
+		}
+	}
+
+	/**
+	 * Set the permissions of an item for a specific user or group
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param string User or group the item is being shared with
+	 * @param int CRUDS permissions
+	 * @return Returns true on success or false on failure
+	 */
+	public static function setPermissions($itemType, $itemSource, $shareType, $shareWith, $permissions) {
+		if ($item = self::getItems($itemType, $itemSource, $shareType, $shareWith,
+			\OC_User::getUser(), self::FORMAT_NONE, null, 1, false)) {
+			// Check if this item is a reshare and verify that the permissions
+			// granted don't exceed the parent shared item
+			if (isset($item['parent'])) {
+				$query = \OC_DB::prepare('SELECT `permissions` FROM `*PREFIX*share` WHERE `id` = ?', 1);
+				$result = $query->execute(array($item['parent']))->fetchRow();
+				if (~(int)$result['permissions'] & $permissions) {
+					$message = 'Setting permissions for '.$itemSource.' failed,'
+						.' because the permissions exceed permissions granted to '.\OC_User::getUser();
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+			}
+			$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = ? WHERE `id` = ?');
+			$query->execute(array($permissions, $item['id']));
+			if ($itemType === 'file' || $itemType === 'folder') {
+				\OC_Hook::emit('OCP\Share', 'post_update_permissions', array(
+					'itemType' => $itemType,
+					'itemSource' => $itemSource,
+					'shareType' => $shareType,
+					'shareWith' => $shareWith,
+					'uidOwner' => \OC_User::getUser(),
+					'permissions' => $permissions,
+					'path' => $item['path'],
+				));
+			}
+			// Check if permissions were removed
+			if ($item['permissions'] & ~$permissions) {
+				// If share permission is removed all reshares must be deleted
+				if (($item['permissions'] & \OCP\PERMISSION_SHARE) && (~$permissions & \OCP\PERMISSION_SHARE)) {
+					Helper::delete($item['id'], true);
+				} else {
+					$ids = array();
+					$parents = array($item['id']);
+					while (!empty($parents)) {
+						$parents = "'".implode("','", $parents)."'";
+						$query = \OC_DB::prepare('SELECT `id`, `permissions` FROM `*PREFIX*share`'
+							.' WHERE `parent` IN ('.$parents.')');
+						$result = $query->execute();
+						// Reset parents array, only go through loop again if
+						// items are found that need permissions removed
+						$parents = array();
+						while ($item = $result->fetchRow()) {
+							// Check if permissions need to be removed
+							if ($item['permissions'] & ~$permissions) {
+								// Add to list of items that need permissions removed
+								$ids[] = $item['id'];
+								$parents[] = $item['id'];
+							}
+						}
+					}
+					// Remove the permissions for all reshares of this item
+					if (!empty($ids)) {
+						$ids = "'".implode("','", $ids)."'";
+						// TODO this should be done with Doctrine platform objects
+						if (\OC_Config::getValue( "dbtype") === 'oci') {
+							$andOp = 'BITAND(`permissions`, ?)';
+						} else {
+							$andOp = '`permissions` & ?';
+						}
+						$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `permissions` = '.$andOp
+							.' WHERE `id` IN ('.$ids.')');
+						$query->execute(array($permissions));
+					}
+				}
+			}
+			return true;
+		}
+		$message = 'Setting permissions for '.$itemSource.' failed, because the item was not found';
+		\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+		throw new \Exception($message);
+	}
+
+	/**
+	 * Set expiration date for a share
+	 * @param string $itemType
+	 * @param string $itemSource
+	 * @param string $date expiration date
+	 * @return \OCP\Share_Backend
+	 */
+	public static function setExpirationDate($itemType, $itemSource, $date) {
+		$user = \OC_User::getUser();
+		$items = self::getItems($itemType, $itemSource, null, null, $user, self::FORMAT_NONE, null, -1, false);
+		if (!empty($items)) {
+			if ($date == '') {
+				$date = null;
+			} else {
+				$date = new \DateTime($date);
+			}
+			$query = \OC_DB::prepare('UPDATE `*PREFIX*share` SET `expiration` = ? WHERE `id` = ?');
+			$query->bindValue(1, $date, 'datetime');
+			foreach ($items as $item) {
+				$query->bindValue(2, (int) $item['id']);
+				$query->execute();
+				\OC_Hook::emit('OCP\Share', 'post_set_expiration_date', array(
+					'itemType' => $itemType,
+					'itemSource' => $itemSource,
+					'date' => $date,
+					'uidOwner' => $user
+				));
+			}
+			return true;
+		}
+		return false;
+	}
+
+	/**
+	 * Checks whether a share has expired, calls unshareItem() if yes.
+	 * @param array $item Share data (usually database row)
+	 * @return bool True if item was expired, false otherwise.
+	 */
+	protected static function expireItem(array $item) {
+		if (!empty($item['expiration'])) {
+			$now = new \DateTime();
+			$expires = new \DateTime($item['expiration']);
+			if ($now > $expires) {
+				self::unshareItem($item);
+				return true;
+			}
+		}
+		return false;
+	}
+
+	/**
+	 * Unshares a share given a share data array
+	 * @param array $item Share data (usually database row)
+	 * @return null
+	 */
+	protected static function unshareItem(array $item) {
+		// Pass all the vars we have for now, they may be useful
+		$hookParams = array(
+			'itemType'      => $item['item_type'],
+			'itemSource'    => $item['item_source'],
+			'shareType'     => $item['share_type'],
+			'shareWith'     => $item['share_with'],
+			'itemParent'    => $item['parent'],
+			'uidOwner'      => $item['uid_owner'],
+		);
+
+		\OC_Hook::emit('OCP\Share', 'pre_unshare', $hookParams + array(
+			'fileSource'	=> $item['file_source'],
+		));
+		Helper::delete($item['id']);
+		\OC_Hook::emit('OCP\Share', 'post_unshare', $hookParams);
+	}
+
+	/**
+	 * Get the backend class for the specified item type
+	 * @param string $itemType
+	 * @return \OCP\Share_Backend
+	 */
+	public static function getBackend($itemType) {
+		if (isset(self::$backends[$itemType])) {
+			return self::$backends[$itemType];
+		} else if (isset(self::$backendTypes[$itemType]['class'])) {
+			$class = self::$backendTypes[$itemType]['class'];
+			if (class_exists($class)) {
+				self::$backends[$itemType] = new $class;
+				if (!(self::$backends[$itemType] instanceof \OCP\Share_Backend)) {
+					$message = 'Sharing backend '.$class.' must implement the interface OCP\Share_Backend';
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+				return self::$backends[$itemType];
+			} else {
+				$message = 'Sharing backend '.$class.' not found';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+		}
+		$message = 'Sharing backend for '.$itemType.' not found';
+		\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+		throw new \Exception($message);
+	}
+
+	/**
+	 * Check if resharing is allowed
+	 * @return Returns true if allowed or false
+	 *
+	 * Resharing is allowed by default if not configured
+	 */
+	private static function isResharingAllowed() {
+		if (!isset(self::$isResharingAllowed)) {
+			if (\OC_Appconfig::getValue('core', 'shareapi_allow_resharing', 'yes') == 'yes') {
+				self::$isResharingAllowed = true;
+			} else {
+				self::$isResharingAllowed = false;
+			}
+		}
+		return self::$isResharingAllowed;
+	}
+
+	/**
+	 * Get a list of collection item types for the specified item type
+	 * @param string Item type
+	 * @return array
+	 */
+	private static function getCollectionItemTypes($itemType) {
+		$collectionTypes = array($itemType);
+		foreach (self::$backendTypes as $type => $backend) {
+			if (in_array($backend['collectionOf'], $collectionTypes)) {
+				$collectionTypes[] = $type;
+			}
+		}
+		// TODO Add option for collections to be collection of themselves, only 'folder' does it now...
+		if (!self::getBackend($itemType) instanceof \OCP\Share_Backend_Collection || $itemType != 'folder') {
+			unset($collectionTypes[0]);
+		}
+		// Return array if collections were found or the item type is a
+		// collection itself - collections can be inside collections
+		if (count($collectionTypes) > 0) {
+			return $collectionTypes;
+		}
+		return false;
+	}
+
+	/**
+	 * Get shared items from the database
+	 * @param string Item type
+	 * @param string Item source or target (optional)
+	 * @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, SHARE_TYPE_LINK, $shareTypeUserAndGroups, or $shareTypeGroupUserUnique
+	 * @param string User or group the item is being shared with
+	 * @param string User that is the owner of shared items (optional)
+	 * @param int Format to convert items to with formatItems()
+	 * @param mixed Parameters to pass to formatItems()
+	 * @param int Number of items to return, -1 to return all matches (optional)
+	 * @param bool Include collection item types (optional)
+	 * @param bool TODO (optional)
+	 * @prams bool check expire date
+	 * @return array
+	 *
+	 * See public functions getItem(s)... for parameter usage
+	 *
+	 */
+	public static function getItems($itemType, $item = null, $shareType = null, $shareWith = null,
+		$uidOwner = null, $format = self::FORMAT_NONE, $parameters = null, $limit = -1,
+		$includeCollections = false, $itemShareWithBySource = false, $checkExpireDate  = true) {
+		if (!self::isEnabled()) {
+			return array();
+		}
+		$backend = self::getBackend($itemType);
+		$collectionTypes = false;
+		// Get filesystem root to add it to the file target and remove from the
+		// file source, match file_source with the file cache
+		if ($itemType == 'file' || $itemType == 'folder') {
+			if(!is_null($uidOwner)) {
+				$root = \OC\Files\Filesystem::getRoot();
+			} else {
+				$root = '';
+			}
+			$where = 'INNER JOIN `*PREFIX*filecache` ON `file_source` = `*PREFIX*filecache`.`fileid`';
+			if (!isset($item)) {
+				$where .= ' WHERE `file_target` IS NOT NULL';
+			}
+			$fileDependent = true;
+			$queryArgs = array();
+		} else {
+			$fileDependent = false;
+			$root = '';
+			$collectionTypes = self::getCollectionItemTypes($itemType);
+			if ($includeCollections && !isset($item) && $collectionTypes) {
+				// If includeCollections is true, find collections of this item type, e.g. a music album contains songs
+				if (!in_array($itemType, $collectionTypes)) {
+					$itemTypes = array_merge(array($itemType), $collectionTypes);
+				} else {
+					$itemTypes = $collectionTypes;
+				}
+				$placeholders = join(',', array_fill(0, count($itemTypes), '?'));
+				$where = ' WHERE `item_type` IN ('.$placeholders.'))';
+				$queryArgs = $itemTypes;
+			} else {
+				$where = ' WHERE `item_type` = ?';
+				$queryArgs = array($itemType);
+			}
+		}
+		if (\OC_Appconfig::getValue('core', 'shareapi_allow_links', 'yes') !== 'yes') {
+			$where .= ' AND `share_type` != ?';
+			$queryArgs[] = self::SHARE_TYPE_LINK;
+		}
+		if (isset($shareType)) {
+			// Include all user and group items
+			if ($shareType == self::$shareTypeUserAndGroups && isset($shareWith)) {
+				$where .= ' AND `share_type` IN (?,?,?)';
+				$queryArgs[] = self::SHARE_TYPE_USER;
+				$queryArgs[] = self::SHARE_TYPE_GROUP;
+				$queryArgs[] = self::$shareTypeGroupUserUnique;
+				$userAndGroups = array_merge(array($shareWith), \OC_Group::getUserGroups($shareWith));
+				$placeholders = join(',', array_fill(0, count($userAndGroups), '?'));
+				$where .= ' AND `share_with` IN ('.$placeholders.')';
+				$queryArgs = array_merge($queryArgs, $userAndGroups);
+				// Don't include own group shares
+				$where .= ' AND `uid_owner` != ?';
+				$queryArgs[] = $shareWith;
+			} else {
+				$where .= ' AND `share_type` = ?';
+				$queryArgs[] = $shareType;
+				if (isset($shareWith)) {
+					$where .= ' AND `share_with` = ?';
+					$queryArgs[] = $shareWith;
+				}
+			}
+		}
+		if (isset($uidOwner)) {
+			$where .= ' AND `uid_owner` = ?';
+			$queryArgs[] = $uidOwner;
+			if (!isset($shareType)) {
+				// Prevent unique user targets for group shares from being selected
+				$where .= ' AND `share_type` != ?';
+				$queryArgs[] = self::$shareTypeGroupUserUnique;
+			}
+			if ($fileDependent) {
+				$column = 'file_source';
+			} else {
+				$column = 'item_source';
+			}
+		} else {
+			if ($fileDependent) {
+				$column = 'file_target';
+			} else {
+				$column = 'item_target';
+			}
+		}
+		if (isset($item)) {
+			$collectionTypes = self::getCollectionItemTypes($itemType);
+			if ($includeCollections && $collectionTypes) {
+				$where .= ' AND (';
+			} else {
+				$where .= ' AND';
+			}
+			// If looking for own shared items, check item_source else check item_target
+			if (isset($uidOwner) || $itemShareWithBySource) {
+				// If item type is a file, file source needs to be checked in case the item was converted
+				if ($fileDependent) {
+					$where .= ' `file_source` = ?';
+					$column = 'file_source';
+				} else {
+					$where .= ' `item_source` = ?';
+					$column = 'item_source';
+				}
+			} else {
+				if ($fileDependent) {
+					$where .= ' `file_target` = ?';
+					$item = \OC\Files\Filesystem::normalizePath($item);
+				} else {
+					$where .= ' `item_target` = ?';
+				}
+			}
+			$queryArgs[] = $item;
+			if ($includeCollections && $collectionTypes) {
+				$placeholders = join(',', array_fill(0, count($collectionTypes), '?'));
+				$where .= ' OR `item_type` IN ('.$placeholders.'))';
+				$queryArgs = array_merge($queryArgs, $collectionTypes);
+			}
+		}
+		if ($limit != -1 && !$includeCollections) {
+			if ($shareType == self::$shareTypeUserAndGroups) {
+				// Make sure the unique user target is returned if it exists,
+				// unique targets should follow the group share in the database
+				// If the limit is not 1, the filtering can be done later
+				$where .= ' ORDER BY `*PREFIX*share`.`id` DESC';
+			}
+			// The limit must be at least 3, because filtering needs to be done
+			if ($limit < 3) {
+				$queryLimit = 3;
+			} else {
+				$queryLimit = $limit;
+			}
+		} else {
+			$queryLimit = null;
+		}
+		$select = self::createSelectStatement($format, $fileDependent, $uidOwner);
+		$root = strlen($root);
+		$query = \OC_DB::prepare('SELECT '.$select.' FROM `*PREFIX*share` '.$where, $queryLimit);
+		$result = $query->execute($queryArgs);
+		if (\OC_DB::isError($result)) {
+			\OC_Log::write('OCP\Share',
+				\OC_DB::getErrorMessage($result) . ', select=' . $select . ' where=' . $where,
+				\OC_Log::ERROR);
+		}
+		$items = array();
+		$targets = array();
+		$switchedItems = array();
+		$mounts = array();
+		while ($row = $result->fetchRow()) {
+			self::transformDBResults($row);
+			// Filter out duplicate group shares for users with unique targets
+			if ($row['share_type'] == self::$shareTypeGroupUserUnique && isset($items[$row['parent']])) {
+				$row['share_type'] = self::SHARE_TYPE_GROUP;
+				$row['share_with'] = $items[$row['parent']]['share_with'];
+				// Remove the parent group share
+				unset($items[$row['parent']]);
+				if ($row['permissions'] == 0) {
+					continue;
+				}
+			} else if (!isset($uidOwner)) {
+				// Check if the same target already exists
+				if (isset($targets[$row[$column]])) {
+					// Check if the same owner shared with the user twice
+					// through a group and user share - this is allowed
+					$id = $targets[$row[$column]];
+					if (isset($items[$id]) && $items[$id]['uid_owner'] == $row['uid_owner']) {
+						// Switch to group share type to ensure resharing conditions aren't bypassed
+						if ($items[$id]['share_type'] != self::SHARE_TYPE_GROUP) {
+							$items[$id]['share_type'] = self::SHARE_TYPE_GROUP;
+							$items[$id]['share_with'] = $row['share_with'];
+						}
+						// Switch ids if sharing permission is granted on only
+						// one share to ensure correct parent is used if resharing
+						if (~(int)$items[$id]['permissions'] & \OCP\PERMISSION_SHARE
+							&& (int)$row['permissions'] & \OCP\PERMISSION_SHARE) {
+							$items[$row['id']] = $items[$id];
+							$switchedItems[$id] = $row['id'];
+							unset($items[$id]);
+							$id = $row['id'];
+						}
+						// Combine the permissions for the item
+						$items[$id]['permissions'] |= (int)$row['permissions'];
+						continue;
+					}
+				} else {
+					$targets[$row[$column]] = $row['id'];
+				}
+			}
+			// Remove root from file source paths if retrieving own shared items
+			if (isset($uidOwner) && isset($row['path'])) {
+				if (isset($row['parent'])) {
+					// FIXME: Doesn't always construct the correct path, example:
+					// Folder '/a/b', share '/a' and '/a/b' to user2
+					// user2 reshares /Shared/b and ask for share status of /Shared/a/b
+					// expected result: path=/Shared/a/b; actual result /Shared/b because of the parent
+					$query = \OC_DB::prepare('SELECT `file_target` FROM `*PREFIX*share` WHERE `id` = ?');
+					$parentResult = $query->execute(array($row['parent']));
+					if (\OC_DB::isError($result)) {
+						\OC_Log::write('OCP\Share', 'Can\'t select parent: ' .
+								\OC_DB::getErrorMessage($result) . ', select=' . $select . ' where=' . $where,
+								\OC_Log::ERROR);
+					} else {
+						$parentRow = $parentResult->fetchRow();
+						$tmpPath = '/Shared' . $parentRow['file_target'];
+						// find the right position where the row path continues from the target path
+						$pos = strrpos($row['path'], $parentRow['file_target']);
+						$subPath = substr($row['path'], $pos);
+						$splitPath = explode('/', $subPath);
+						foreach (array_slice($splitPath, 2) as $pathPart) {
+							$tmpPath = $tmpPath . '/' . $pathPart;
+						}
+						$row['path'] = $tmpPath;
+					}
+				} else {
+					if (!isset($mounts[$row['storage']])) {
+						$mountPoints = \OC\Files\Filesystem::getMountByNumericId($row['storage']);
+						if (is_array($mountPoints)) {
+							$mounts[$row['storage']] = current($mountPoints);
+						}
+					}
+					if ($mounts[$row['storage']]) {
+						$path = $mounts[$row['storage']]->getMountPoint().$row['path'];
+						$row['path'] = substr($path, $root);
+					}
+				}
+			}
+			if($checkExpireDate) {
+				if (self::expireItem($row)) {
+					continue;
+				}
+			}
+			// Check if resharing is allowed, if not remove share permission
+			if (isset($row['permissions']) && !self::isResharingAllowed()) {
+				$row['permissions'] &= ~\OCP\PERMISSION_SHARE;
+			}
+			// Add display names to result
+			if ( isset($row['share_with']) && $row['share_with'] != '') {
+				$row['share_with_displayname'] = \OCP\User::getDisplayName($row['share_with']);
+			}
+			if ( isset($row['uid_owner']) && $row['uid_owner'] != '') {
+				$row['displayname_owner'] = \OCP\User::getDisplayName($row['uid_owner']);
+			}
+
+			$items[$row['id']] = $row;
+		}
+		if (!empty($items)) {
+			$collectionItems = array();
+			foreach ($items as &$row) {
+				// Return only the item instead of a 2-dimensional array
+				if ($limit == 1 && $row[$column] == $item && ($row['item_type'] == $itemType || $itemType == 'file')) {
+					if ($format == self::FORMAT_NONE) {
+						return $row;
+					} else {
+						break;
+					}
+				}
+				// Check if this is a collection of the requested item type
+				if ($includeCollections && $collectionTypes && in_array($row['item_type'], $collectionTypes)) {
+					if (($collectionBackend = self::getBackend($row['item_type']))
+						&& $collectionBackend instanceof \OCP\Share_Backend_Collection) {
+						// Collections can be inside collections, check if the item is a collection
+						if (isset($item) && $row['item_type'] == $itemType && $row[$column] == $item) {
+							$collectionItems[] = $row;
+						} else {
+							$collection = array();
+							$collection['item_type'] = $row['item_type'];
+							if ($row['item_type'] == 'file' || $row['item_type'] == 'folder') {
+								$collection['path'] = basename($row['path']);
+							}
+							$row['collection'] = $collection;
+							// Fetch all of the children sources
+							$children = $collectionBackend->getChildren($row[$column]);
+							foreach ($children as $child) {
+								$childItem = $row;
+								$childItem['item_type'] = $itemType;
+								if ($row['item_type'] != 'file' && $row['item_type'] != 'folder') {
+									$childItem['item_source'] = $child['source'];
+									$childItem['item_target'] = $child['target'];
+								}
+								if ($backend instanceof \OCP\Share_Backend_File_Dependent) {
+									if ($row['item_type'] == 'file' || $row['item_type'] == 'folder') {
+										$childItem['file_source'] = $child['source'];
+									} else { // TODO is this really needed if we already know that we use the file backend?
+										$meta = \OC\Files\Filesystem::getFileInfo($child['file_path']);
+										$childItem['file_source'] = $meta['fileid'];
+									}
+									$childItem['file_target'] =
+										\OC\Files\Filesystem::normalizePath($child['file_path']);
+								}
+								if (isset($item)) {
+									if ($childItem[$column] == $item) {
+										// Return only the item instead of a 2-dimensional array
+										if ($limit == 1) {
+											if ($format == self::FORMAT_NONE) {
+												return $childItem;
+											} else {
+												// Unset the items array and break out of both loops
+												$items = array();
+												$items[] = $childItem;
+												break 2;
+											}
+										} else {
+											$collectionItems[] = $childItem;
+										}
+									}
+								} else {
+									$collectionItems[] = $childItem;
+								}
+							}
+						}
+					}
+					// Remove collection item
+					$toRemove = $row['id'];
+					if (array_key_exists($toRemove, $switchedItems)) {
+						$toRemove = $switchedItems[$toRemove];
+					}
+					unset($items[$toRemove]);
+				}
+			}
+			if (!empty($collectionItems)) {
+				$items = array_merge($items, $collectionItems);
+			}
+
+			return self::formatResult($items, $column, $backend, $format, $parameters);
+		}
+
+		return array();
+	}
+
+	/**
+	 * Put shared item into the database
+	 * @param string Item type
+	 * @param string Item source
+	 * @param int SHARE_TYPE_USER, SHARE_TYPE_GROUP, or SHARE_TYPE_LINK
+	 * @param string User or group the item is being shared with
+	 * @param string User that is the owner of shared item
+	 * @param int CRUDS permissions
+	 * @param bool|array Parent folder target (optional)
+	 * @param string token (optional)
+	 * @param string name of the source item (optional)
+	 * @return bool Returns true on success or false on failure
+	 */
+	private static function put($itemType, $itemSource, $shareType, $shareWith, $uidOwner,
+		$permissions, $parentFolder = null, $token = null, $itemSourceName = null) {
+		$backend = self::getBackend($itemType);
+
+		// Check if this is a reshare
+		if ($checkReshare = self::getItemSharedWithBySource($itemType, $itemSource, self::FORMAT_NONE, null, true)) {
+
+			// Check if attempting to share back to owner
+			if ($checkReshare['uid_owner'] == $shareWith && $shareType == self::SHARE_TYPE_USER) {
+				$message = 'Sharing '.$itemSourceName.' failed, because the user '.$shareWith.' is the original sharer';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			// Check if share permissions is granted
+			if (self::isResharingAllowed() && (int)$checkReshare['permissions'] & \OCP\PERMISSION_SHARE) {
+				if (~(int)$checkReshare['permissions'] & $permissions) {
+					$message = 'Sharing '.$itemSourceName
+						.' failed, because the permissions exceed permissions granted to '.$uidOwner;
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				} else {
+					// TODO Don't check if inside folder
+					$parent = $checkReshare['id'];
+					$itemSource = $checkReshare['item_source'];
+					$fileSource = $checkReshare['file_source'];
+					$suggestedItemTarget = $checkReshare['item_target'];
+					$suggestedFileTarget = $checkReshare['file_target'];
+					$filePath = $checkReshare['file_target'];
+				}
+			} else {
+				$message = 'Sharing '.$itemSourceName.' failed, because resharing is not allowed';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+		} else {
+			$parent = null;
+			$suggestedItemTarget = null;
+			$suggestedFileTarget = null;
+			if (!$backend->isValidSource($itemSource, $uidOwner)) {
+				$message = 'Sharing '.$itemSource.' failed, because the sharing backend for '
+					.$itemType.' could not find its source';
+				\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+				throw new \Exception($message);
+			}
+			if ($backend instanceof \OCP\Share_Backend_File_Dependent) {
+				$filePath = $backend->getFilePath($itemSource, $uidOwner);
+				if ($itemType == 'file' || $itemType == 'folder') {
+					$fileSource = $itemSource;
+				} else {
+					$meta = \OC\Files\Filesystem::getFileInfo($filePath);
+					$fileSource = $meta['fileid'];
+				}
+				if ($fileSource == -1) {
+					$message = 'Sharing '.$itemSource.' failed, because the file could not be found in the file cache';
+					\OC_Log::write('OCP\Share', $message, \OC_Log::ERROR);
+					throw new \Exception($message);
+				}
+			} else {
+				$filePath = null;
+				$fileSource = null;
+			}
+		}
+		$query = \OC_DB::prepare('INSERT INTO `*PREFIX*share` (`item_type`, `item_source`, `item_target`,'
+			.' `parent`, `share_type`, `share_with`, `uid_owner`, `permissions`, `stime`, `file_source`,'
+			.' `file_target`, `token`) VALUES (?,?,?,?,?,?,?,?,?,?,?,?)');
+		// Share with a group
+		if ($shareType == self::SHARE_TYPE_GROUP) {
+			$groupItemTarget = Helper::generateTarget($itemType, $itemSource, $shareType, $shareWith['group'],
+				$uidOwner, $suggestedItemTarget);
+			$run = true;
+			$error = '';
+			\OC_Hook::emit('OCP\Share', 'pre_shared', array(
+				'itemType' => $itemType,
+				'itemSource' => $itemSource,
+				'itemTarget' => $groupItemTarget,
+				'shareType' => $shareType,
+				'shareWith' => $shareWith['group'],
+				'uidOwner' => $uidOwner,
+				'permissions' => $permissions,
+				'fileSource' => $fileSource,
+				'token' => $token,
+				'run' => &$run,
+				'error' => &$error
+			));
+
+			if ($run === false) {
+				throw new \Exception($error);
+			}
+
+			if (isset($fileSource)) {
+				if ($parentFolder) {
+					if ($parentFolder === true) {
+						$groupFileTarget = Helper::generateTarget('file', $filePath, $shareType,
+							$shareWith['group'], $uidOwner, $suggestedFileTarget);
+						// Set group default file target for future use
+						$parentFolders[0]['folder'] = $groupFileTarget;
+					} else {
+						// Get group default file target
+						$groupFileTarget = $parentFolder[0]['folder'].$itemSource;
+						$parent = $parentFolder[0]['id'];
+					}
+				} else {
+					$groupFileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith['group'],
+						$uidOwner, $suggestedFileTarget);
+				}
+			} else {
+				$groupFileTarget = null;
+			}
+			$query->execute(array($itemType, $itemSource, $groupItemTarget, $parent, $shareType,
+				$shareWith['group'], $uidOwner, $permissions, time(), $fileSource, $groupFileTarget, $token));
+			// Save this id, any extra rows for this group share will need to reference it
+			$parent = \OC_DB::insertid('*PREFIX*share');
+			// Loop through all users of this group in case we need to add an extra row
+			foreach ($shareWith['users'] as $uid) {
+				$itemTarget = Helper::generateTarget($itemType, $itemSource, self::SHARE_TYPE_USER, $uid,
+					$uidOwner, $suggestedItemTarget, $parent);
+				if (isset($fileSource)) {
+					if ($parentFolder) {
+						if ($parentFolder === true) {
+							$fileTarget = Helper::generateTarget('file', $filePath, self::SHARE_TYPE_USER, $uid,
+								$uidOwner, $suggestedFileTarget, $parent);
+							if ($fileTarget != $groupFileTarget) {
+								$parentFolders[$uid]['folder'] = $fileTarget;
+							}
+						} else if (isset($parentFolder[$uid])) {
+							$fileTarget = $parentFolder[$uid]['folder'].$itemSource;
+							$parent = $parentFolder[$uid]['id'];
+						}
+					} else {
+						$fileTarget = Helper::generateTarget('file', $filePath, self::SHARE_TYPE_USER,
+							$uid, $uidOwner, $suggestedFileTarget, $parent);
+					}
+				} else {
+					$fileTarget = null;
+				}
+				// Insert an extra row for the group share if the item or file target is unique for this user
+				if ($itemTarget != $groupItemTarget || (isset($fileSource) && $fileTarget != $groupFileTarget)) {
+					$query->execute(array($itemType, $itemSource, $itemTarget, $parent,
+						self::$shareTypeGroupUserUnique, $uid, $uidOwner, $permissions, time(),
+							$fileSource, $fileTarget, $token));
+					$id = \OC_DB::insertid('*PREFIX*share');
+				}
+			}
+			\OC_Hook::emit('OCP\Share', 'post_shared', array(
+				'itemType' => $itemType,
+				'itemSource' => $itemSource,
+				'itemTarget' => $groupItemTarget,
+				'parent' => $parent,
+				'shareType' => $shareType,
+				'shareWith' => $shareWith['group'],
+				'uidOwner' => $uidOwner,
+				'permissions' => $permissions,
+				'fileSource' => $fileSource,
+				'fileTarget' => $groupFileTarget,
+				'id' => $parent,
+				'token' => $token
+			));
+
+			if ($parentFolder === true) {
+				// Return parent folders to preserve file target paths for potential children
+				return $parentFolders;
+			}
+		} else {
+			$itemTarget = Helper::generateTarget($itemType, $itemSource, $shareType, $shareWith, $uidOwner,
+				$suggestedItemTarget);
+			$run = true;
+			$error = '';
+			\OC_Hook::emit('OCP\Share', 'pre_shared', array(
+				'itemType' => $itemType,
+				'itemSource' => $itemSource,
+				'itemTarget' => $itemTarget,
+				'shareType' => $shareType,
+				'shareWith' => $shareWith,
+				'uidOwner' => $uidOwner,
+				'permissions' => $permissions,
+				'fileSource' => $fileSource,
+				'token' => $token,
+				'run' => &$run,
+				'error' => &$error
+			));
+
+			if ($run === false) {
+				throw new \Exception($error);
+			}
+
+			if (isset($fileSource)) {
+				if ($parentFolder) {
+					if ($parentFolder === true) {
+						$fileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith,
+							$uidOwner, $suggestedFileTarget);
+						$parentFolders['folder'] = $fileTarget;
+					} else {
+						$fileTarget = $parentFolder['folder'].$itemSource;
+						$parent = $parentFolder['id'];
+					}
+				} else {
+					$fileTarget = Helper::generateTarget('file', $filePath, $shareType, $shareWith, $uidOwner,
+						$suggestedFileTarget);
+				}
+			} else {
+				$fileTarget = null;
+			}
+			$query->execute(array($itemType, $itemSource, $itemTarget, $parent, $shareType, $shareWith, $uidOwner,
+				$permissions, time(), $fileSource, $fileTarget, $token));
+			$id = \OC_DB::insertid('*PREFIX*share');
+			\OC_Hook::emit('OCP\Share', 'post_shared', array(
+				'itemType' => $itemType,
+				'itemSource' => $itemSource,
+				'itemTarget' => $itemTarget,
+				'parent' => $parent,
+				'shareType' => $shareType,
+				'shareWith' => $shareWith,
+				'uidOwner' => $uidOwner,
+				'permissions' => $permissions,
+				'fileSource' => $fileSource,
+				'fileTarget' => $fileTarget,
+				'id' => $id,
+				'token' => $token
+			));
+			if ($parentFolder === true) {
+				$parentFolders['id'] = $id;
+				// Return parent folder to preserve file target paths for potential children
+				return $parentFolders;
+			}
+		}
+		return true;
+	}
+
+	/**
+	 * Delete all shares with type SHARE_TYPE_LINK
+	 */
+	public static function removeAllLinkShares() {
+		// Delete any link shares
+		$query = \OC_DB::prepare('SELECT `id` FROM `*PREFIX*share` WHERE `share_type` = ?');
+		$result = $query->execute(array(self::SHARE_TYPE_LINK));
+		while ($item = $result->fetchRow()) {
+			Helper::delete($item['id']);
+		}
+	}
+
+	/**
+	 * In case a password protected link is not yet authenticated this function will return false
+	 *
+	 * @param array $linkItem
+	 * @return bool
+	 */
+	public static function checkPasswordProtectedShare(array $linkItem) {
+		if (!isset($linkItem['share_with'])) {
+			return true;
+		}
+		if (!isset($linkItem['share_type'])) {
+			return true;
+		}
+		if (!isset($linkItem['id'])) {
+			return true;
+		}
+
+		if ($linkItem['share_type'] != \OCP\Share::SHARE_TYPE_LINK) {
+			return true;
+		}
+
+		if ( \OC::$session->exists('public_link_authenticated')
+			&& \OC::$session->get('public_link_authenticated') === $linkItem['id'] ) {
+			return true;
+		}
+
+		return false;
+	}
+
+	/**
+	 * @breif construct select statement
+	 * @param int $format
+	 * @param bool $fileDependent ist it a file/folder share or a generla share
+	 * @param string $uidOwner
+	 * @return string select statement
+	 */
+	private static function createSelectStatement($format, $fileDependent, $uidOwner = null) {
+		$select = '*';
+		if ($format == self::FORMAT_STATUSES) {
+			if ($fileDependent) {
+				$select = '`*PREFIX*share`.`id`, `*PREFIX*share`.`parent`, `share_type`, `path`, `share_with`, `uid_owner`';
+			} else {
+				$select = '`id`, `parent`, `share_type`, `share_with`, `uid_owner`';
+			}
+		} else {
+			if (isset($uidOwner)) {
+				if ($fileDependent) {
+					$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `*PREFIX*share`.`parent`,'
+							. ' `share_type`, `share_with`, `file_source`, `path`, `permissions`, `stime`,'
+							. ' `expiration`, `token`, `storage`, `mail_send`, `uid_owner`';
+				} else {
+					$select = '`id`, `item_type`, `item_source`, `parent`, `share_type`, `share_with`, `permissions`,'
+							. ' `stime`, `file_source`, `expiration`, `token`, `mail_send`, `uid_owner`';
+				}
+			} else {
+				if ($fileDependent) {
+					if ($format == \OC_Share_Backend_File::FORMAT_GET_FOLDER_CONTENTS || $format == \OC_Share_Backend_File::FORMAT_FILE_APP_ROOT) {
+						$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `*PREFIX*share`.`parent`, `uid_owner`, '
+								. '`share_type`, `share_with`, `file_source`, `path`, `file_target`, '
+								. '`permissions`, `expiration`, `storage`, `*PREFIX*filecache`.`parent` as `file_parent`, '
+								. '`name`, `mtime`, `mimetype`, `mimepart`, `size`, `unencrypted_size`, `encrypted`, `etag`, `mail_send`';
+					} else {
+						$select = '`*PREFIX*share`.`id`, `item_type`, `item_source`, `item_target`,
+							`*PREFIX*share`.`parent`, `share_type`, `share_with`, `uid_owner`,
+							`file_source`, `path`, `file_target`, `permissions`, `stime`, `expiration`, `token`, `storage`, `mail_send`';
+					}
+				}
+			}
+		}
+		return $select;
+	}
+
+
+	/**
+	 * @brief transform db results
+	 * @param array $row result
+	 */
+	private static function transformDBResults(&$row) {
+		if (isset($row['id'])) {
+			$row['id'] = (int) $row['id'];
+		}
+		if (isset($row['share_type'])) {
+			$row['share_type'] = (int) $row['share_type'];
+		}
+		if (isset($row['parent'])) {
+			$row['parent'] = (int) $row['parent'];
+		}
+		if (isset($row['file_parent'])) {
+			$row['file_parent'] = (int) $row['file_parent'];
+		}
+		if (isset($row['file_source'])) {
+			$row['file_source'] = (int) $row['file_source'];
+		}
+		if (isset($row['permissions'])) {
+			$row['permissions'] = (int) $row['permissions'];
+		}
+		if (isset($row['storage'])) {
+			$row['storage'] = (int) $row['storage'];
+		}
+		if (isset($row['stime'])) {
+			$row['stime'] = (int) $row['stime'];
+		}
+	}
+
+	/**
+	 * @brief format result
+	 * @param array $items result
+	 * @prams string $column is it a file share or a general share ('file_target' or 'item_target')
+	 * @params \OCP\Share_Backend $backend sharing backend
+	 * @param int $format
+	 * @param array additional format parameters
+	 * @return array formate result
+	 */
+	private static function formatResult($items, $column, $backend, $format = self::FORMAT_NONE , $parameters = null) {
+		if ($format === self::FORMAT_NONE) {
+			return $items;
+		} else if ($format === self::FORMAT_STATUSES) {
+			$statuses = array();
+			foreach ($items as $item) {
+				if ($item['share_type'] === self::SHARE_TYPE_LINK) {
+					$statuses[$item[$column]]['link'] = true;
+				} else if (!isset($statuses[$item[$column]])) {
+					$statuses[$item[$column]]['link'] = false;
+				}
+				if ('file_target') {
+					$statuses[$item[$column]]['path'] = $item['path'];
+				}
+			}
+			return $statuses;
+		} else {
+			return $backend->formatItems($items, $format, $parameters);
+		}
+	}
+}
diff --git a/lib/private/template/base.php b/lib/private/template/base.php
index 8af2fce7737..3d7c685c1cf 100644
--- a/lib/private/template/base.php
+++ b/lib/private/template/base.php
@@ -61,7 +61,7 @@ class Base {
 	/**
 	 * @brief Assign variables
 	 * @param string $key key
-	 * @param mixed $value value
+	 * @param array|bool|integer|string $value value
 	 * @return bool
 	 *
 	 * This function assigns a variable. It can be accessed via $_[$key] in
diff --git a/lib/private/updater.php b/lib/private/updater.php
index f05d5038b76..9f57aa0b6a0 100644
--- a/lib/private/updater.php
+++ b/lib/private/updater.php
@@ -16,9 +16,6 @@ use OC\Hooks\BasicEmitter;
  *  - maintenanceStart()
  *  - maintenanceEnd()
  *  - dbUpgrade()
- *  - filecacheStart()
- *  - filecacheProgress(int $percentage)
- *  - filecacheDone()
  *  - failure(string $message)
  */
 class Updater extends BasicEmitter {
@@ -76,7 +73,9 @@ class Updater extends BasicEmitter {
 		if ($xml == false) {
 			return array();
 		}
+		$loadEntities = libxml_disable_entity_loader(true);
 		$data = @simplexml_load_string($xml);
+		libxml_disable_entity_loader($loadEntities);
 
 		$tmp = array();
 		$tmp['version'] = $data->version;
@@ -103,10 +102,15 @@ class Updater extends BasicEmitter {
 		}
 		$this->emit('\OC\Updater', 'maintenanceStart');
 
+		// create empty file in data dir, so we can later find
+		// out that this is indeed an ownCloud data directory
+		// (in case it didn't exist before)
+		file_put_contents(\OC_Config::getValue('datadirectory', \OC::$SERVERROOT.'/data').'/.ocdata', '');
+
 		/*
 		 * START CONFIG CHANGES FOR OLDER VERSIONS
 		 */
-		if (version_compare($currentVersion, '6.90.1', '<')) {
+		if (!\OC::$CLI && version_compare($installedVersion, '6.90.1', '<')) {
 			// Add the overwriteHost config if it is not existant
 			// This is added to prevent host header poisoning
 			\OC_Config::setValue('trusted_domains', \OC_Config::getValue('trusted_domains', array(\OC_Request::serverHost()))); 
@@ -120,9 +124,6 @@ class Updater extends BasicEmitter {
 			\OC_DB::updateDbFromStructure(\OC::$SERVERROOT . '/db_structure.xml');
 			$this->emit('\OC\Updater', 'dbUpgrade');
 
-			// do a file cache upgrade for users with files
-			// this can take loooooooooooooooooooooooong
-			$this->upgradeFileCache();
 		} catch (\Exception $exception) {
 			$this->emit('\OC\Updater', 'failure', array($exception->getMessage()));
 		}
@@ -134,46 +135,11 @@ class Updater extends BasicEmitter {
 		$repair = new Repair();
 		$repair->run();
 
+		//Invalidate update feed
+		\OC_Appconfig::setValue('core', 'lastupdatedat', 0);
 		\OC_Config::setValue('maintenance', false);
 		$this->emit('\OC\Updater', 'maintenanceEnd');
 	}
 
-	private function upgradeFileCache() {
-		try {
-			$query = \OC_DB::prepare('
-				SELECT DISTINCT `user`
-				FROM `*PREFIX*fscache`
-			');
-			$result = $query->execute();
-		} catch (\Exception $e) {
-			return;
-		}
-		$users = $result->fetchAll();
-		if (count($users) == 0) {
-			return;
-		}
-		$step = 100 / count($users);
-		$percentCompleted = 0;
-		$lastPercentCompletedOutput = 0;
-		$startInfoShown = false;
-		foreach ($users as $userRow) {
-			$user = $userRow['user'];
-			\OC\Files\Filesystem::initMountPoints($user);
-			\OC\Files\Cache\Upgrade::doSilentUpgrade($user);
-			if (!$startInfoShown) {
-				//We show it only now, because otherwise Info about upgraded apps
-				//will appear between this and progress info
-				$this->emit('\OC\Updater', 'filecacheStart');
-				$startInfoShown = true;
-			}
-			$percentCompleted += $step;
-			$out = floor($percentCompleted);
-			if ($out != $lastPercentCompletedOutput) {
-				$this->emit('\OC\Updater', 'filecacheProgress', array($out));
-				$lastPercentCompletedOutput = $out;
-			}
-		}
-		$this->emit('\OC\Updater', 'filecacheDone');
-	}
 }
 
diff --git a/lib/private/urlgenerator.php b/lib/private/urlgenerator.php
index 60da34f2d6e..0d238737dde 100644
--- a/lib/private/urlgenerator.php
+++ b/lib/private/urlgenerator.php
@@ -39,7 +39,7 @@ class URLGenerator implements IURLGenerator {
 	 * Returns a url to the given app and file.
 	 */
 	public function linkToRoute($route, $parameters = array()) {
-		$urlLinkTo = \OC::getRouter()->generate($route, $parameters);
+		$urlLinkTo = \OC::$server->getRouter()->generate($route, $parameters);
 		return $urlLinkTo;
 	}
 
@@ -60,7 +60,7 @@ class URLGenerator implements IURLGenerator {
 			$app_path = \OC_App::getAppPath($app);
 			// Check if the app is in the app folder
 			if ($app_path && file_exists($app_path . '/' . $file)) {
-				if (substr($file, -3) == 'php' || substr($file, -3) == 'css') {
+				if (substr($file, -3) == 'php') {
 
 					$urlLinkTo = \OC::$WEBROOT . '/index.php/apps/' . $app;
 					if ($frontControllerActive) {
@@ -148,6 +148,7 @@ class URLGenerator implements IURLGenerator {
 	 */
 	public function getAbsoluteURL($url) {
 		$separator = $url[0] === '/' ? '' : '/';
-		return \OC_Request::serverProtocol() . '://' . \OC_Request::serverHost() . $separator . $url;
+
+		return \OC_Request::serverProtocol() . '://' . \OC_Request::serverHost(). \OC::$WEBROOT . $separator . $url;
 	}
 }
diff --git a/lib/private/user.php b/lib/private/user.php
index a89b7286c10..dc4c7ec3b61 100644
--- a/lib/private/user.php
+++ b/lib/private/user.php
@@ -321,8 +321,6 @@ class OC_User {
 	 */
 	public static function isLoggedIn() {
 		if (\OC::$session->get('user_id') && self::$incognitoMode === false) {
-			OC_App::loadApps(array('authentication'));
-			self::setupBackends();
 			return self::userExists(\OC::$session->get('user_id'));
 		}
 		return false;
diff --git a/lib/private/util.php b/lib/private/util.php
index 920161949ae..731b7c97503 100755
--- a/lib/private/util.php
+++ b/lib/private/util.php
@@ -30,9 +30,7 @@ class OC_Util {
 		}
 
 		// load all filesystem apps before, so no setup-hook gets lost
-		if(!isset($RUNTIME_NOAPPS) || !$RUNTIME_NOAPPS) {
-			OC_App::loadApps(array('filesystem'));
-		}
+		OC_App::loadApps(array('filesystem'));
 
 		// the filesystem will finish when $user is not empty,
 		// mark fs setup here to avoid doing the setup from loading
@@ -290,13 +288,19 @@ class OC_Util {
 	 * @return array arrays with error messages and hints
 	 */
 	public static function checkServer() {
+		$errors = array();
+		$CONFIG_DATADIRECTORY = OC_Config::getValue('datadirectory', OC::$SERVERROOT . '/data');
+
+		if (!\OC::needUpgrade() && OC_Config::getValue('installed', false)) {
+			// this check needs to be done every time
+			$errors = self::checkDataDirectoryValidity($CONFIG_DATADIRECTORY);
+		}
+
 		// Assume that if checkServer() succeeded before in this session, then all is fine.
 		if(\OC::$session->exists('checkServer_suceeded') && \OC::$session->get('checkServer_suceeded')) {
-			return array();
+			return $errors;
 		}
 
-		$errors = array();
-
 		$defaults = new \OC_Defaults();
 
 		$webServerRestart = false;
@@ -341,7 +345,6 @@ class OC_Util {
 					);
 			}
 		}
-		$CONFIG_DATADIRECTORY = OC_Config::getValue( "datadirectory", OC::$SERVERROOT."/data" );
 		// Create root dir.
 		if(!is_dir($CONFIG_DATADIRECTORY)) {
 			$success=@mkdir($CONFIG_DATADIRECTORY);
@@ -485,6 +488,8 @@ class OC_Util {
 			);
 		}
 
+		$errors = array_merge($errors, self::checkDatabaseVersion());
+
 		// Cache the result of this function
 		\OC::$session->set('checkServer_suceeded', count($errors) == 0);
 
@@ -492,6 +497,39 @@ class OC_Util {
 	}
 
 	/**
+	 * Check the database version
+	 * @return array errors array
+	 */
+	public static function checkDatabaseVersion() {
+		$errors = array();
+		$dbType = \OC_Config::getValue('dbtype', 'sqlite');
+		if ($dbType === 'pgsql') {
+			// check PostgreSQL version
+			try {
+				$result = \OC_DB::executeAudited('SHOW SERVER_VERSION');
+				$data = $result->fetchRow();
+				if (isset($data['server_version'])) {
+					$version = $data['server_version'];
+					if (version_compare($version, '9.0.0', '<')) {
+						$errors[] = array(
+							'error' => 'PostgreSQL >= 9 required',
+							'hint' => 'Please upgrade your database version'
+						);
+					}
+				}
+			} catch (\Doctrine\DBAL\DBALException $e) {
+				\OCP\Util::logException('core', $e);
+				$errors[] = array(
+					'error' => 'Error occurred while checking PostgreSQL version',
+					'hint' => 'Please make sure you have PostgreSQL >= 9 or check the logs for more information about the error'
+				);
+			}
+		}
+		return $errors;
+	}
+
+
+	/**
 	 * @brief check if there are still some encrypted files stored
 	 * @return boolean
 	 */
@@ -526,7 +564,7 @@ class OC_Util {
 				.' cannot be listed by other users.';
 			$perms = substr(decoct(@fileperms($dataDirectory)), -3);
 			if (substr($perms, -1) != '0') {
-				OC_Helper::chmodr($dataDirectory, 0770);
+				chmod($dataDirectory, 0770);
 				clearstatcache();
 				$perms = substr(decoct(@fileperms($dataDirectory)), -3);
 				if (substr($perms, 2, 1) != '0') {
@@ -541,6 +579,25 @@ class OC_Util {
 	}
 
 	/**
+	 * Check that the data directory exists and is valid by
+	 * checking the existence of the ".ocdata" file.
+	 *
+	 * @param string $dataDirectory data directory path
+	 * @return bool true if the data directory is valid, false otherwise
+	 */
+	public static function checkDataDirectoryValidity($dataDirectory) {
+		$errors = array();
+		if (!file_exists($dataDirectory.'/.ocdata')) {
+			$errors[] = array(
+				'error' => 'Data directory (' . $dataDirectory . ') is invalid',
+				'hint' => 'Please check that the data directory contains a file' .
+					' ".ocdata" in its root.'
+			);
+		}
+		return $errors;
+	}
+
+	/**
 	 * @return void
 	 */
 	public static function displayLoginPage($errors = array()) {
@@ -644,17 +701,18 @@ class OC_Util {
 	 * @return void
 	 */
 	public static function redirectToDefaultPage() {
+		$urlGenerator = \OC::$server->getURLGenerator();
 		if(isset($_REQUEST['redirect_url'])) {
-			$location = OC_Helper::makeURLAbsolute(urldecode($_REQUEST['redirect_url']));
+			$location = urldecode($_REQUEST['redirect_url']);
 		}
 		else if (isset(OC::$REQUESTEDAPP) && !empty(OC::$REQUESTEDAPP)) {
-			$location = OC_Helper::linkToAbsolute( OC::$REQUESTEDAPP, 'index.php' );
+			$location = $urlGenerator->getAbsoluteURL('/index.php/apps/'.OC::$REQUESTEDAPP.'/index.php');
 		} else {
 			$defaultPage = OC_Appconfig::getValue('core', 'defaultpage');
 			if ($defaultPage) {
-				$location = OC_Helper::makeURLAbsolute(OC::$WEBROOT.'/'.$defaultPage);
+				$location = $urlGenerator->getAbsoluteURL($defaultPage);
 			} else {
-				$location = OC_Helper::linkToAbsolute( 'files', 'index.php' );
+				$location = $urlGenerator->getAbsoluteURL('/index.php/files/index.php');
 			}
 		}
 		OC_Log::write('core', 'redirectToDefaultPage: '.$location, OC_Log::DEBUG);
@@ -1015,13 +1073,13 @@ class OC_Util {
 	public static function getUrlContent($url) {
 		if (function_exists('curl_init')) {
 			$curl = curl_init();
+			$max_redirects = 10;
 
 			curl_setopt($curl, CURLOPT_HEADER, 0);
 			curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);
 			curl_setopt($curl, CURLOPT_CONNECTTIMEOUT, 10);
 			curl_setopt($curl, CURLOPT_URL, $url);
-			curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
-			curl_setopt($curl, CURLOPT_MAXREDIRS, 10);
+			
 
 			curl_setopt($curl, CURLOPT_USERAGENT, "ownCloud Server Crawler");
 			if(OC_Config::getValue('proxy', '') != '') {
@@ -1030,9 +1088,50 @@ class OC_Util {
 			if(OC_Config::getValue('proxyuserpwd', '') != '') {
 				curl_setopt($curl, CURLOPT_PROXYUSERPWD, OC_Config::getValue('proxyuserpwd'));
 			}
-			$data = curl_exec($curl);
+			
+			if (ini_get('open_basedir') === '' && ini_get('safe_mode' === 'Off')) { 
+				curl_setopt($curl, CURLOPT_FOLLOWLOCATION, true);
+				curl_setopt($curl, CURLOPT_MAXREDIRS, $max_redirects);
+				$data = curl_exec($curl);
+			} else {
+				curl_setopt($curl, CURLOPT_FOLLOWLOCATION, false);
+				$mr = $max_redirects;
+				if ($mr > 0) { 
+					$newurl = curl_getinfo($curl, CURLINFO_EFFECTIVE_URL);
+					
+					$rcurl = curl_copy_handle($curl);
+					curl_setopt($rcurl, CURLOPT_HEADER, true);
+					curl_setopt($rcurl, CURLOPT_NOBODY, true);
+					curl_setopt($rcurl, CURLOPT_FORBID_REUSE, false);
+					curl_setopt($rcurl, CURLOPT_RETURNTRANSFER, true);
+					do {
+						curl_setopt($rcurl, CURLOPT_URL, $newurl);
+						$header = curl_exec($rcurl);
+						if (curl_errno($rcurl)) {
+							$code = 0;
+						} else {
+							$code = curl_getinfo($rcurl, CURLINFO_HTTP_CODE);
+							if ($code == 301 || $code == 302) {
+								preg_match('/Location:(.*?)\n/', $header, $matches);
+								$newurl = trim(array_pop($matches));
+							} else {
+								$code = 0;
+							}
+						}
+					} while ($code && --$mr);
+					curl_close($rcurl);
+					if ($mr > 0) {
+						curl_setopt($curl, CURLOPT_URL, $newurl);
+					} 
+				}
+				
+				if($mr == 0 && $max_redirects > 0) {
+					$data = false;
+				} else {
+					$data = curl_exec($curl);
+				}
+			}
 			curl_close($curl);
-
 		} else {
 			$contextArray = null;
 
@@ -1061,13 +1160,22 @@ class OC_Util {
 	}
 
 	/**
-	 * @return bool - well are we running on windows or not
+	 * Checks whether the server is running on Windows
+	 * @return bool true if running on Windows, false otherwise
 	 */
 	public static function runningOnWindows() {
 		return (substr(PHP_OS, 0, 3) === "WIN");
 	}
 
 	/**
+	 * Checks whether the server is running on Mac OS X
+	 * @return bool true if running on Mac OS X, false otherwise
+	 */
+	public static function runningOnMac() {
+		return (strtoupper(substr(PHP_OS, 0, 6)) === 'DARWIN');
+	}
+
+	/**
 	 * Handles the case that there may not be a theme, then check if a "default"
 	 * theme exists and take that one
 	 * @return string the theme
author	Bart Visscher <bartv@thisnet.nl>	2014-03-31 21:38:54 +0200
committer	Bart Visscher <bartv@thisnet.nl>	2014-03-31 21:38:54 +0200
commit	6b061c236dd5730837b567f2c39a19af1617d33c (patch)
tree	27de0d46deae2987ea398f2f2aee4e26786c6f48 /lib/private
parent	8951328a87c16e5ebfe4d3e5c392347db1e54f92 (diff)
parent	ab696edba685cd6d2a64c2e48907f03197aae53f (diff)
download	nextcloud-server-6b061c236dd5730837b567f2c39a19af1617d33c.tar.gz nextcloud-server-6b061c236dd5730837b567f2c39a19af1617d33c.zip