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# SOME DESCRIPTIVE TITLE.
# Copyright (C) YEAR THE PACKAGE'S COPYRIGHT HOLDER
# This file is distributed under the same license as the PACKAGE package.
# 
# Translators:
msgid ""
msgstr ""
"Project-Id-Version: ownCloud\n"
"Report-Msgid-Bugs-To: http://bugs.owncloud.org/\n"
"POT-Creation-Date: 2013-06-24 02:01+0200\n"
"PO-Revision-Date: 2013-06-23 23:15+0000\n"
"Last-Translator: Vincenzo Reale <vinx.reale@gmail.com>\n"
"Language-Team: Italian (http://www.transifex.com/projects/p/owncloud/language/it/)\n"
"MIME-Version: 1.0\n"
"Content-Type: text/plain; charset=UTF-8\n"
"Content-Transfer-Encoding: 8bit\n"
"Language: it\n"
"Plural-Forms: nplurals=2; plural=(n != 1);\n"

#: ajax/delete.php:42
#, php-format
msgid "Couldn't delete %s permanently"
msgstr "Impossibile eliminare %s definitivamente"

#: ajax/undelete.php:42
#, php-format
msgid "Couldn't restore %s"
msgstr "Impossibile ripristinare %s"

#: js/trash.js:7 js/trash.js:97
msgid "perform restore operation"
msgstr "esegui operazione di ripristino"

#: js/trash.js:19 js/trash.js:46 js/trash.js:115 js/trash.js:141
msgid "Error"
msgstr "Errore"

#: js/trash.js:34
msgid "delete file permanently"
msgstr "elimina il file definitivamente"

#: js/trash.js:123
msgid "Delete permanently"
msgstr "Elimina definitivamente"

#: js/trash.js:176 templates/index.php:17
msgid "Name"
msgstr "Nome"

#: js/trash.js:177 templates/index.php:27
msgid "Deleted"
msgstr "Eliminati"

#: js/trash.js:186
msgid "1 folder"
msgstr "1 cartella"

#: js/trash.js:188
msgid "{count} folders"
msgstr "{count} cartelle"

#: js/trash.js:196
msgid "1 file"
msgstr "1 file"

#: js/trash.js:198
msgid "{count} files"
msgstr "{count} file"

#: templates/index.php:9
msgid "Nothing in here. Your trash bin is empty!"
msgstr "Qui non c'è niente. Il tuo cestino è vuoto."

#: templates/index.php:20 templates/index.php:22
msgid "Restore"
msgstr "Ripristina"

#: templates/index.php:30 templates/index.php:31
msgid "Delete"
msgstr "Elimina"

#: templates/part.breadcrumb.php:9
msgid "Deleted Files"
msgstr "File eliminati"
d='n413' href='#n413'>413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 477 478 479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513 514 515 516 517 518 519 520 521 522 523 524 525 526 527 528 529 530 531 532 533 534 535 536 537 538 539 540 541 542 543 544 545 546 547 548 549 550 551 552 553 554 555 556 557 558 559 560 561 562 563 564 565 566 567 568 569 570 571 572 573 574 575 576 577 578 579 580 581 582 583 584 585 586 587 588 589 590 591 592 593 594 595 596 597 598 599 600 601 602 603 604 605 606 607 608 609 610 611 612 613 614 615 616 617 618 619 620 621 622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661 662 663 664 665 666 667 668 669 670 671 672 673 674 675 676 677 678 679 680 681 682 683 684 685 686 687 688 689 690 691 692 693 694 695 696 697 698 699 700 701 702 703 704 705 706 707 708 709 710 711 712 713 714 715 716 717 718 719 720 721 722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743 744 745 746 747 748 749 750 751 752 753 754 755 756 757 758 759 760 761 762 763 764 765 766 767 768 769 770 771 772 773 774 775 776 777 778 779 780 781 782 783 784 785 786 787 788 789 790 791 792 793 794 795 796 797 798 799 800 801 802 803 804 805 806 807 808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860 861 862 863 864 865 866 867 868 869 870 871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008
<?php
/**
 * ownCloud
 *
 * @author Frank Karlitschek
 * @author Jakob Sack
 * @copyright 2012 Frank Karlitschek frank@owncloud.org
 *
 * 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/>.
 *
 */

/**
 * This class manages the apps. It allows them to register and integrate in the
 * owncloud ecosystem. Furthermore, this class is responsible for installing,
 * upgrading and removing apps.
 */
class OC_App{
	static private $settingsForms = array();
	static private $adminForms = array();
	static private $personalForms = array();
	static private $appInfo = array();
	static private $appTypes = array();
	static private $loadedApps = array();
	static private $checkedApps = array();
	static private $altLogin = array();

	/**
	 * @brief clean the appid
	 * @param $app Appid that needs to be cleaned
	 * @return string
	 */
	public static function cleanAppId($app) {
		return str_replace(array('\0', '/', '\\', '..'), '', $app);
	}

	/**
	 * @brief loads all apps
	 * @param array $types
	 * @return bool
	 *
	 * This function walks through the owncloud directory and loads all apps
	 * it can find. A directory contains an app if the file /appinfo/app.php
	 * exists.
	 *
	 * if $types is set, only apps of those types will be loaded
	 */
	public static function loadApps($types=null) {
		// Load the enabled apps here
		$apps = self::getEnabledApps();
		// prevent app.php from printing output
		ob_start();
		foreach( $apps as $app ) {
			if((is_null($types) or self::isType($app, $types)) && !in_array($app, self::$loadedApps)) {
				self::loadApp($app);
				self::$loadedApps[] = $app;
			}
		}
		ob_end_clean();

		if (!defined('DEBUG') || !DEBUG) {
			if (is_null($types)
				&& empty(OC_Util::$coreScripts)
				&& empty(OC_Util::$coreStyles)) {
				OC_Util::$coreScripts = OC_Util::$scripts;
				OC_Util::$scripts = array();
				OC_Util::$coreStyles = OC_Util::$styles;
				OC_Util::$styles = array();
			}
		}
		// return
		return true;
	}

	/**
	 * load a single app
	 * @param string $app
	 */
	public static function loadApp($app) {
		if(is_file(self::getAppPath($app).'/appinfo/app.php')) {
			self::checkUpgrade($app);
			require_once $app.'/appinfo/app.php';
		}
	}

	/**
	 * check if an app is of a specific type
	 * @param string $app
	 * @param string/array $types
	 * @return bool
	 */
	public static function isType($app, $types) {
		if(is_string($types)) {
			$types=array($types);
		}
		$appTypes=self::getAppTypes($app);
		foreach($types as $type) {
			if(array_search($type, $appTypes)!==false) {
				return true;
			}
		}
		return false;
	}

	/**
	 * get the types of an app
	 * @param string $app
	 * @return array
	 */
	private static function getAppTypes($app) {
		//load the cache
		if(count(self::$appTypes)==0) {
			self::$appTypes=OC_Appconfig::getValues(false, 'types');
		}

		if(isset(self::$appTypes[$app])) {
			return explode(',', self::$appTypes[$app]);
		}else{
			return array();
		}
	}

	/**
	 * read app types from info.xml and cache them in the database
	 */
	public static function setAppTypes($app) {
		$appData=self::getAppInfo($app);

		if(isset($appData['types'])) {
			$appTypes=implode(',', $appData['types']);
		}else{
			$appTypes='';
		}

		OC_Appconfig::setValue($app, 'types', $appTypes);
	}

	/**
	 * check if app is shipped
	 * @param string $appid the id of the app to check
	 * @return bool
	 *
	 * Check if an app that is installed is a shipped app or installed from the appstore.
	 */
	public static function isShipped($appid){
		$info = self::getAppInfo($appid);
		if(isset($info['shipped']) && $info['shipped']=='true') {
			return true;
		} else {
			return false;
		}
	}

	/**
	 * get all enabled apps
	 */
	private static $enabledAppsCache = array();
	public static function getEnabledApps() {
		if(!OC_Config::getValue('installed', false)) {
			return array();
		}
		if(!empty(self::$enabledAppsCache)) {
			return self::$enabledAppsCache;
		}
		$apps=array('files');
		$sql = 'SELECT `appid` FROM `*PREFIX*appconfig`'
			.' WHERE `configkey` = \'enabled\' AND `configvalue`=\'yes\'';
		if (OC_Config::getValue( 'dbtype', 'sqlite' ) === 'oci') {
			//FIXME oracle hack: need to explicitly cast CLOB to CHAR for comparison
			$sql = 'SELECT `appid` FROM `*PREFIX*appconfig`'
			.' WHERE `configkey` = \'enabled\' AND to_char(`configvalue`)=\'yes\'';
		}
		$query = OC_DB::prepare( $sql );
		$result=$query->execute();
		if( \OC_DB::isError($result)) {
			throw new DatabaseException($result->getMessage(), $query);
		}
		while($row=$result->fetchRow()) {
			if(array_search($row['appid'], $apps)===false) {
				$apps[]=$row['appid'];
			}
		}
		self::$enabledAppsCache = $apps;
		return $apps;
	}

	/**
	 * @brief checks whether or not an app is enabled
	 * @param string $app app
	 * @return bool
	 *
	 * This function checks whether or not an app is enabled.
	 */
	public static function isEnabled( $app ) {
		if('files' == $app) {
			return true;
		}
		$enabledApps = self::getEnabledApps();
		return in_array($app, $enabledApps);
	}

	/**
	 * @brief enables an app
	 * @param mixed $app app
	 * @throws \Exception
	 * @return void
	 *
	 * This function set an app as enabled in appconfig.
	 */
	public static function enable( $app ) {
		self::$enabledAppsCache = array(); // flush
		if(!OC_Installer::isInstalled($app)) {
			// check if app is a shipped app or not. OCS apps have an integer as id, shipped apps use a string
			if(!is_numeric($app)) {
				$app = OC_Installer::installShippedApp($app);
			}else{
				$appdata=OC_OCSClient::getApplication($app);
				$download=OC_OCSClient::getApplicationDownload($app, 1);
				if(isset($download['downloadlink']) and $download['downloadlink']!='') {
					$info = array('source'=>'http', 'href'=>$download['downloadlink'], 'appdata'=>$appdata);
					$app=OC_Installer::installApp($info);
				}
			}
		}
		$l = OC_L10N::get('core');
		if($app!==false) {
			// check if the app is compatible with this version of ownCloud
			$info=OC_App::getAppInfo($app);
			$version=OC_Util::getVersion();
			if(!isset($info['require']) or !self::isAppVersionCompatible($version, $info['require'])) {
				throw new \Exception(
					$l->t("App \"%s\" can't be installed because it is not compatible with this version of ownCloud.",
						array($info['name'])
					)
				);
			}else{
				OC_Appconfig::setValue( $app, 'enabled', 'yes' );
				if(isset($appdata['id'])) {
					OC_Appconfig::setValue( $app, 'ocsid', $appdata['id'] );
				}
				\OC_Hook::emit('OC_App', 'post_enable', array('app' => $app));
			}
		}else{
			throw new \Exception($l->t("No app name specified"));
		}
	}

	/**
	 * @brief disables an app
	 * @param string $app app
	 * @return bool
	 *
	 * This function set an app as disabled in appconfig.
	 */
	public static function disable( $app ) {
		self::$enabledAppsCache = array(); // flush
		// check if app is a shipped app or not. if not delete
		\OC_Hook::emit('OC_App', 'pre_disable', array('app' => $app));
		OC_Appconfig::setValue( $app, 'enabled', 'no' );

		// check if app is a shipped app or not. if not delete
		if(!OC_App::isShipped( $app )) {
			OC_Installer::removeApp( $app );
		}
	}

	/**
	 * @brief adds an entry to the navigation
	 * @param array $data array containing the data
	 * @return bool
	 *
	 * This function adds a new entry to the navigation visible to users. $data
	 * is an associative array.
	 * The following keys are required:
	 *   - id: unique id for this entry ('addressbook_index')
	 *   - href: link to the page
	 *   - name: Human readable name ('Addressbook')
	 *
	 * The following keys are optional:
	 *   - icon: path to the icon of the app
	 *   - order: integer, that influences the position of your application in
	 *     the navigation. Lower values come first.
	 */
	public static function addNavigationEntry( $data ) {
		OC::$server->getNavigationManager()->add($data);
		return true;
	}

	/**
	 * @brief marks a navigation entry as active
	 * @param string $id id of the entry
	 * @return bool
	 *
	 * This function sets a navigation entry as active and removes the 'active'
	 * property from all other entries. The templates can use this for
	 * highlighting the current position of the user.
	 */
	public static function setActiveNavigationEntry( $id ) {
		OC::$server->getNavigationManager()->setActiveEntry($id);
		return true;
	}

	/**
	 * @brief Get the navigation entries for the $app
	 * @param string $app app
	 * @return array of the $data added with addNavigationEntry
	 *
	 * Warning: destroys the existing entries
	 */
	public static function getAppNavigationEntries($app) {
		if(is_file(self::getAppPath($app).'/appinfo/app.php')) {
			OC::$server->getNavigationManager()->clear();
			require $app.'/appinfo/app.php';
			return OC::$server->getNavigationManager()->getAll();
		}
		return array();
	}

	/**
	 * @brief gets the active Menu entry
	 * @return string id or empty string
	 *
	 * This function returns the id of the active navigation entry (set by
	 * setActiveNavigationEntry
	 */
	public static function getActiveNavigationEntry() {
		return OC::$server->getNavigationManager()->getActiveEntry();
	}

	/**
	 * @brief Returns the Settings Navigation
	 * @return array
	 *
	 * This function returns an array containing all settings pages added. The
	 * entries are sorted by the key 'order' ascending.
	 */
	public static function getSettingsNavigation() {
		$l=OC_L10N::get('lib');

		$settings = array();
		// by default, settings only contain the help menu
		if(OC_Util::getEditionString() === '' &&
			OC_Config::getValue('knowledgebaseenabled', true)==true) {
			$settings = array(
				array(
					"id" => "help",
					"order" => 1000,
					"href" => OC_Helper::linkToRoute( "settings_help" ),
					"name" => $l->t("Help"),
					"icon" => OC_Helper::imagePath( "settings", "help.svg" )
				)
			);
		}

		// if the user is logged-in
		if (OC_User::isLoggedIn()) {
			// personal menu
			$settings[] = array(
				"id" => "personal",
				"order" => 1,
				"href" => OC_Helper::linkToRoute( "settings_personal" ),
				"name" => $l->t("Personal"),
				"icon" => OC_Helper::imagePath( "settings", "personal.svg" )
			);

			// if there are some settings forms
			if(!empty(self::$settingsForms)) {
				// settings menu
				$settings[]=array(
					"id" => "settings",
					"order" => 1000,
					"href" => OC_Helper::linkToRoute( "settings_settings" ),
					"name" => $l->t("Settings"),
					"icon" => OC_Helper::imagePath( "settings", "settings.svg" )
				);
			}

			//SubAdmins are also allowed to access user management
			if(OC_SubAdmin::isSubAdmin(OC_User::getUser())) {
				// admin users menu
				$settings[] = array(
					"id" => "core_users",
					"order" => 2,
					"href" => OC_Helper::linkToRoute( "settings_users" ),
					"name" => $l->t("Users"),
					"icon" => OC_Helper::imagePath( "settings", "users.svg" )
				);
			}


			// if the user is an admin
			if(OC_User::isAdminUser(OC_User::getUser())) {
				// admin settings
				$settings[]=array(
					"id" => "admin",
					"order" => 1000,
					"href" => OC_Helper::linkToRoute( "settings_admin" ),
					"name" => $l->t("Admin"),
					"icon" => OC_Helper::imagePath( "settings", "admin.svg" )
				);
			}
		}

		$navigation = self::proceedNavigation($settings);
		return $navigation;
	}

	// This is private as well. It simply works, so don't ask for more details
	private static function proceedNavigation( $list ) {
		$activeapp = OC::$server->getNavigationManager()->getActiveEntry();
		foreach( $list as &$naventry ) {
			if( $naventry['id'] == $activeapp ) {
				$naventry['active'] = true;
			}
			else{
				$naventry['active'] = false;
			}
		} unset( $naventry );

		usort( $list, create_function( '$a, $b', 'if( $a["order"] == $b["order"] ) {return 0;}elseif( $a["order"] < $b["order"] ) {return -1;}else{return 1;}' ));

		return $list;
	}

	/**
	 * Get the path where to install apps
	 */
	public static function getInstallPath() {
		if(OC_Config::getValue('appstoreenabled', true)==false) {
			return false;
		}

		foreach(OC::$APPSROOTS as $dir) {
			if(isset($dir['writable']) && $dir['writable']===true) {
				return $dir['path'];
			}
		}

		OC_Log::write('core', 'No application directories are marked as writable.', OC_Log::ERROR);
		return null;
	}


	protected static function findAppInDirectories($appid) {
		static $app_dir = array();
		if (isset($app_dir[$appid])) {
			return $app_dir[$appid];
		}
		foreach(OC::$APPSROOTS as $dir) {
			if(file_exists($dir['path'].'/'.$appid)) {
				return $app_dir[$appid]=$dir;
			}
		}
		return false;
	}
	/**
	* Get the directory for the given app.
	* If the app is defined in multiple directories, the first one is taken. (false if not found)
	*/
	public static function getAppPath($appid) {
		if( ($dir = self::findAppInDirectories($appid)) != false) {
			return $dir['path'].'/'.$appid;
		}
		return false;
	}

	/**
	* Get the path for the given app on the access
	* If the app is defined in multiple directories, the first one is taken. (false if not found)
	*/
	public static function getAppWebPath($appid) {
		if( ($dir = self::findAppInDirectories($appid)) != false) {
			return OC::$WEBROOT.$dir['url'].'/'.$appid;
		}
		return false;
	}

	/**
	 * get the last version of the app, either from appinfo/version or from appinfo/info.xml
	 */
	public static function getAppVersion($appid) {
		$file= self::getAppPath($appid).'/appinfo/version';
		if(is_file($file) && $version = trim(file_get_contents($file))) {
			return $version;
		}else{
			$appData=self::getAppInfo($appid);
			return isset($appData['version'])? $appData['version'] : '';
		}
	}

	/**
	 * @brief Read all app metadata from the info.xml file
	 * @param string $appid id of the app or the path of the info.xml file
	 * @param boolean $path (optional)
	 * @return array
	 * @note all data is read from info.xml, not just pre-defined fields
	*/
	public static function getAppInfo($appid, $path=false) {
		if($path) {
			$file=$appid;
		}else{
			if(isset(self::$appInfo[$appid])) {
				return self::$appInfo[$appid];
			}
			$file= self::getAppPath($appid).'/appinfo/info.xml';
		}
		$data=array();
		$content=@file_get_contents($file);
		if(!$content) {
			return null;
		}
		$xml = new SimpleXMLElement($content);
		$data['info']=array();
		$data['remote']=array();
		$data['public']=array();
		foreach($xml->children() as $child) {
			/**
			 * @var $child SimpleXMLElement
			 */
			if($child->getName()=='remote') {
				foreach($child->children() as $remote) {
					/**
					 * @var $remote SimpleXMLElement
					 */
					$data['remote'][$remote->getName()]=(string)$remote;
				}
			}elseif($child->getName()=='public') {
				foreach($child->children() as $public) {
					/**
					 * @var $public SimpleXMLElement
					 */
					$data['public'][$public->getName()]=(string)$public;
				}
			}elseif($child->getName()=='types') {
				$data['types']=array();
				foreach($child->children() as $type) {
					/**
					 * @var $type SimpleXMLElement
					 */
					$data['types'][]=$type->getName();
				}
			}elseif($child->getName()=='description') {
				$xml=(string)$child->asXML();
				$data[$child->getName()]=substr($xml, 13, -14);//script <description> tags
			}else{
				$data[$child->getName()]=(string)$child;
			}
		}
		self::$appInfo[$appid]=$data;

		return $data;
	}

	/**
	 * @brief Returns the navigation
	 * @return array
	 *
	 * This function returns an array containing all entries added. The
	 * entries are sorted by the key 'order' ascending. Additional to the keys
	 * given for each app the following keys exist:
	 *   - active: boolean, signals if the user is on this navigation entry
	 */
	public static function getNavigation() {
		$entries = OC::$server->getNavigationManager()->getAll();
		$navigation = self::proceedNavigation( $entries );
		return $navigation;
	}

	/**
	 * get the id of loaded app
	 * @return string
	 */
	public static function getCurrentApp() {
		$script=substr(OC_Request::scriptName(), strlen(OC::$WEBROOT)+1);
		$topFolder=substr($script, 0, strpos($script, '/'));
		if (empty($topFolder)) {
			$path_info = OC_Request::getPathInfo();
			if ($path_info) {
				$topFolder=substr($path_info, 1, strpos($path_info, '/', 1)-1);
			}
		}
		if($topFolder=='apps') {
			$length=strlen($topFolder);
			return substr($script, $length+1, strpos($script, '/', $length+1)-$length-1);
		}else{
			return $topFolder;
		}
	}


	/**
	 * get the forms for either settings, admin or personal
	 */
	public static function getForms($type) {
		$forms=array();
		switch($type) {
			case 'settings':
				$source=self::$settingsForms;
				break;
			case 'admin':
				$source=self::$adminForms;
				break;
			case 'personal':
				$source=self::$personalForms;
				break;
			default:
				return array();
		}
		foreach($source as $form) {
			$forms[]=include $form;
		}
		return $forms;
	}

	/**
	 * register a settings form to be shown
	 */
	public static function registerSettings($app, $page) {
		self::$settingsForms[]= $app.'/'.$page.'.php';
	}

	/**
	 * register an admin form to be shown
	 */
	public static function registerAdmin($app, $page) {
		self::$adminForms[]= $app.'/'.$page.'.php';
	}

	/**
	 * register a personal form to be shown
	 */
	public static function registerPersonal($app, $page) {
		self::$personalForms[]= $app.'/'.$page.'.php';
	}

	public static function registerLogIn($entry) {
		self::$altLogin[] = $entry;
	}

	public static function getAlternativeLogIns() {
		return self::$altLogin;
	}

	/**
	 * @brief: get a list of all apps in the apps folder
	 * @return array or app names (string IDs)
	 * @todo: change the name of this method to getInstalledApps, which is more accurate
	 */
	public static function getAllApps() {

		$apps=array();

		foreach ( OC::$APPSROOTS as $apps_dir ) {
			if(! is_readable($apps_dir['path'])) {
				OC_Log::write('core', 'unable to read app folder : ' .$apps_dir['path'], OC_Log::WARN);
				continue;
			}
			$dh = opendir( $apps_dir['path'] );

			if(is_resource($dh)) {
				while (($file = readdir($dh)) !== false) {

					if ($file[0] != '.' and is_file($apps_dir['path'].'/'.$file.'/appinfo/app.php')) {

						$apps[] = $file;

					}

				}
			}

		}

		return $apps;
	}

	/**
	 * @brief: Lists all apps, this is used in apps.php
	 * @return array
	 */
	public static function listAllApps() {
		$installedApps = OC_App::getAllApps();

		//TODO which apps do we want to blacklist and how do we integrate
		// blacklisting with the multi apps folder feature?

		$blacklist = array('files');//we dont want to show configuration for these
		$appList = array();

		foreach ( $installedApps as $app ) {
			if ( array_search( $app, $blacklist ) === false ) {

				$info=OC_App::getAppInfo($app);

				if (!isset($info['name'])) {
					OC_Log::write('core', 'App id "'.$app.'" has no name in appinfo', OC_Log::ERROR);
					continue;
				}

				if ( OC_Appconfig::getValue( $app, 'enabled', 'no') == 'yes' ) {
					$active = true;
				} else {
					$active = false;
				}

				$info['active'] = $active;

				if(isset($info['shipped']) and ($info['shipped']=='true')) {
					$info['internal']=true;
					$info['internallabel']='Internal App';
					$info['internalclass']='';
					$info['update']=false;
				} else {
					$info['internal']=false;
					$info['internallabel']='3rd Party';
					$info['internalclass']='externalapp';
					$info['update']=OC_Installer::isUpdateAvailable($app);
				}

				$info['preview'] = OC_Helper::imagePath('settings', 'trans.png');
				$info['version'] = OC_App::getAppVersion($app);
				$appList[] = $info;
			}
		}
		$remoteApps = OC_App::getAppstoreApps();
		if ( $remoteApps ) {
			// Remove duplicates
			foreach ( $appList as $app ) {
				foreach ( $remoteApps AS $key => $remote ) {
					if (
						$app['name'] == $remote['name']
						// To set duplicate detection to use OCS ID instead of string name,
						// enable this code, remove the line of code above,
						// and add <ocs_id>[ID]</ocs_id> to info.xml of each 3rd party app:
						// OR $app['ocs_id'] == $remote['ocs_id']
						) {
						unset( $remoteApps[$key]);
					}
				}
			}
			$combinedApps = array_merge( $appList, $remoteApps );
		} else {
			$combinedApps = $appList;
		}
		// bring the apps into the right order with a custom sort funtion
		usort( $combinedApps, '\OC_App::customSort' );

		return $combinedApps;
	}

	/**
	 * @brief: Internal custom sort funtion to bring the app into the right order. Should only be called by listAllApps
	 * @return array
	 */
	private static function customSort($a, $b) {

		// prio 1: active
		if ($a['active'] != $b['active']) {
			return $b['active'] - $a['active'];
		}

		// prio 2: shipped
		$ashipped = (array_key_exists('shipped', $a) && $a['shipped'] === 'true') ? 1 : 0;
		$bshipped = (array_key_exists('shipped', $b) && $b['shipped'] === 'true') ? 1 : 0;
		if ($ashipped !== $bshipped) {
			return ($bshipped - $ashipped);
		}

		// prio 3: recommended
		if ($a['internalclass'] != $b['internalclass']) {
			$atemp = ($a['internalclass'] == 'recommendedapp' ? 1 : 0);
			$btemp = ($b['internalclass'] == 'recommendedapp' ? 1 : 0);
			return ($btemp - $atemp);
		}

		// prio 4: alphabetical
		return strcasecmp($a['name'], $b['name']);

	}

	/**
	 * @brief: get a list of all apps on apps.owncloud.com
	 * @return array, multi-dimensional array of apps.
	 *     Keys: id, name, type, typename, personid, license, detailpage, preview, changed, description
	 */
	public static function getAppstoreApps( $filter = 'approved' ) {
		$categoryNames = OC_OCSClient::getCategories();
		if ( is_array( $categoryNames ) ) {
			// Check that categories of apps were retrieved correctly
			if ( ! $categories = array_keys( $categoryNames ) ) {
				return false;
			}

			$page = 0;
			$remoteApps = OC_OCSClient::getApplications( $categories, $page, $filter );
			$app1 = array();
			$i = 0;
			foreach ( $remoteApps as $app ) {
				$app1[$i] = $app;
				$app1[$i]['author'] = $app['personid'];
				$app1[$i]['ocs_id'] = $app['id'];
				$app1[$i]['internal'] = $app1[$i]['active'] = 0;
				$app1[$i]['update'] = false;
				if($app['label']=='recommended') {
					$app1[$i]['internallabel'] = 'Recommended';
					$app1[$i]['internalclass'] = 'recommendedapp';
				}else{
					$app1[$i]['internallabel'] = '3rd Party';
					$app1[$i]['internalclass'] = 'externalapp';
				}


				// rating img
				if($app['score']>=0     and $app['score']<5)	$img=OC_Helper::imagePath( "core", "rating/s1.png" );
				elseif($app['score']>=5 and $app['score']<15)	$img=OC_Helper::imagePath( "core", "rating/s2.png" );
				elseif($app['score']>=15 and $app['score']<25)	$img=OC_Helper::imagePath( "core", "rating/s3.png" );
				elseif($app['score']>=25 and $app['score']<35)	$img=OC_Helper::imagePath( "core", "rating/s4.png" );
				elseif($app['score']>=35 and $app['score']<45)	$img=OC_Helper::imagePath( "core", "rating/s5.png" );
				elseif($app['score']>=45 and $app['score']<55)	$img=OC_Helper::imagePath( "core", "rating/s6.png" );
				elseif($app['score']>=55 and $app['score']<65)	$img=OC_Helper::imagePath( "core", "rating/s7.png" );
				elseif($app['score']>=65 and $app['score']<75)	$img=OC_Helper::imagePath( "core", "rating/s8.png" );
				elseif($app['score']>=75 and $app['score']<85)	$img=OC_Helper::imagePath( "core", "rating/s9.png" );
				elseif($app['score']>=85 and $app['score']<95)	$img=OC_Helper::imagePath( "core", "rating/s10.png" );
				elseif($app['score']>=95 and $app['score']<100)	$img=OC_Helper::imagePath( "core", "rating/s11.png" );

				$app1[$i]['score'] = '<img src="'.$img.'"> Score: '.$app['score'].'%';
				$i++;
			}
		}

		if ( empty( $app1 ) ) {
			return false;
		} else {
			return $app1;
		}
	}

	/**
	 * check if the app needs updating and update when needed
	 */
	public static function checkUpgrade($app) {
		if (in_array($app, self::$checkedApps)) {
			return;
		}
		self::$checkedApps[] = $app;
		$versions = self::getAppVersions();
		$currentVersion=OC_App::getAppVersion($app);
		if ($currentVersion) {
			$installedVersion = $versions[$app];
			if (version_compare($currentVersion, $installedVersion, '>')) {
				$info = self::getAppInfo($app);
				OC_Log::write($app,
					'starting app upgrade from '.$installedVersion.' to '.$currentVersion,
					OC_Log::DEBUG);
				try {
					OC_App::updateApp($app);
					OC_Hook::emit('update', 'success', 'Updated '.$info['name'].' app');
				}
				catch (Exception $e) {
					OC_Hook::emit('update', 'failure', 'Failed to update '.$info['name'].' app: '.$e->getMessage());
					$l = OC_L10N::get('lib');
					throw new RuntimeException($l->t('Failed to upgrade "%s".', array($app)), 0, $e);
				}
				OC_Appconfig::setValue($app, 'installed_version', OC_App::getAppVersion($app));
			}
		}
	}

	/**
	 * check if the current enabled apps are compatible with the current
	 * ownCloud version. disable them if not.
	 * This is important if you upgrade ownCloud and have non ported 3rd
	 * party apps installed.
	 */
	public static function checkAppsRequirements($apps = array()) {
		if (empty($apps)) {
			$apps = OC_App::getEnabledApps();
		}
		$version = OC_Util::getVersion();
		foreach($apps as $app) {
			// check if the app is compatible with this version of ownCloud
			$info = OC_App::getAppInfo($app);
			if(!isset($info['require']) or !self::isAppVersionCompatible($version, $info['require'])) {
				OC_Log::write('core',
					'App "'.$info['name'].'" ('.$app.') can\'t be used because it is'
					.' not compatible with this version of ownCloud',
					OC_Log::ERROR);
				OC_App::disable( $app );
				OC_Hook::emit('update', 'success', 'Disabled '.$info['name'].' app because it is not compatible');
			}
		}
	}


	/**
	 * Compares the app version with the owncloud version to see if the app
	 * requires a newer version than the currently active one
	 * @param array $owncloudVersions array with 3 entries: major minor bugfix
	 * @param string $appRequired the required version from the xml
	 * major.minor.bugfix
	 * @return boolean true if compatible, otherwise false
	 */
	public static function isAppVersionCompatible($owncloudVersions, $appRequired){
		$appVersions = explode('.', $appRequired);

		for($i=0; $i<count($appVersions); $i++){
			$appVersion = (int) $appVersions[$i];

			if(isset($owncloudVersions[$i])){
				$owncloudVersion = $owncloudVersions[$i];
			} else {
				$owncloudVersion = 0;
			}

			if($owncloudVersion < $appVersion){
				return false;
			} elseif ($owncloudVersion > $appVersion) {
				return true;
			}
		}

		return true;
	}


	/**
	 * get the installed version of all apps
	 */
	public static function getAppVersions() {
		static $versions;
		if (isset($versions)) {   // simple cache, needs to be fixed
			return $versions; // when function is used besides in checkUpgrade
		}
		$versions=array();
		$query = OC_DB::prepare( 'SELECT `appid`, `configvalue` FROM `*PREFIX*appconfig`'
			.' WHERE `configkey` = \'installed_version\'' );
		$result = $query->execute();
		while($row = $result->fetchRow()) {
			$versions[$row['appid']]=$row['configvalue'];
		}
		return $versions;
	}

	/**
	 * update the database for the app and call the update script
	 * @param string $appid
	 */
	public static function updateApp($appid) {
		if(file_exists(self::getAppPath($appid).'/appinfo/preupdate.php')) {
			self::loadApp($appid);
			include self::getAppPath($appid).'/appinfo/preupdate.php';
		}
		if(file_exists(self::getAppPath($appid).'/appinfo/database.xml')) {
			OC_DB::updateDbFromStructure(self::getAppPath($appid).'/appinfo/database.xml');
		}
		if(!self::isEnabled($appid)) {
			return;
		}
		if(file_exists(self::getAppPath($appid).'/appinfo/update.php')) {
			self::loadApp($appid);
			include self::getAppPath($appid).'/appinfo/update.php';
		}

		//set remote/public handlers
		$appData=self::getAppInfo($appid);
		foreach($appData['remote'] as $name=>$path) {
			OCP\CONFIG::setAppValue('core', 'remote_'.$name, $appid.'/'.$path);
		}
		foreach($appData['public'] as $name=>$path) {
			OCP\CONFIG::setAppValue('core', 'public_'.$name, $appid.'/'.$path);
		}

		self::setAppTypes($appid);
	}

	/**
	 * @param string $appid
	 * @return \OC\Files\View
	 */
	public static function getStorage($appid) {
		if(OC_App::isEnabled($appid)) {//sanity check
			if(OC_User::isLoggedIn()) {
				$view = new \OC\Files\View('/'.OC_User::getUser());
				if(!$view->file_exists($appid)) {
					$view->mkdir($appid);
				}
				return new \OC\Files\View('/'.OC_User::getUser().'/'.$appid);
			}else{
				OC_Log::write('core', 'Can\'t get app storage, app '.$appid.', user not logged in', OC_Log::ERROR);
				return false;
			}
		}else{
			OC_Log::write('core', 'Can\'t get app storage, app '.$appid.' not enabled', OC_Log::ERROR);
			return false;
		}
	}
}