<commit_before><?php
/**
 * ownCloud
 *
 * @author <NAME>
 * @author <NAME>
 * @copyright 2010 <NAME> <EMAIL>
 *
 * 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 $init = false;
	static private $apps = array();
	static private $activeapp = "";
	static private $adminpages = array();
	static private $settingspages = array();
	static private $navigation = array();
	static private $subnavigation = array();

	/**
	 * @brief loads all apps
	 * @returns true/false
	 *
	 * 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.
	 */
	public static function loadApps(){
		global $SERVERROOT;

		// Did we allready load everything?
		if( self::$init ){
			return true;
		}

		// Our very own core apps are hardcoded
		foreach( array( "admin", "files", "log", "help", "settings" ) as $app ){
			require( "$app/appinfo/app.php" );
		}

		// The rest comes here
		$dir = opendir( "$SERVERROOT/apps" );
		while( false !== ( $filename = readdir( $dir ))){
			if( substr( $filename, 0, 1 ) != '.' ){
				if( file_exists( "$SERVERROOT/apps/$filename/appinfo/app.php" )){
					require( "apps/$filename/appinfo/app.php" );
				}
			}
		}
		closedir( $dir );

		self::$init = true;

		// return
		return true;
	}

	/**
	 * @brief makes owncloud aware of this app
	 * @param $data array with all information
	 * @returns true/false
	 *
	 * This function registers the application. $data is an associative array.
	 * The following keys are required:
	 *   - id: id of the application, has to be unique ("addressbook")
	 *   - name: Human readable name ("Addressbook")
	 *   - version: array with Version (major, minor, bugfix) ( array(1, 0, 2))
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     a list of applications. Lower values come first.
	 *
	 */
	public static function register( $data ){
		OC_APP::$apps[] = $data;
	}

	/**
	 * @brief returns information of all apps
	 * @return array with all information
	 *
	 * This function returns all data it got via register().
	 */
	public static function get(){
		// TODO: write function
		return OC_APP::$apps;
	}

	/**
	 * @brief adds an entry to the navigation
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * 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( $data ){
		// TODO: write function
		OC_APP::$navigation[] = $data;
		return true;
	}

	/**
	 * @brief adds a sub entry to the navigation
	 * @param $parent id of the parent
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function adds a new sub entry to the navigation visible to users.
	 * these entries are visible only if the parent navigation entry is marked
	 * as being active (see activateNavigationEntry()). $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 addNavigationSubEntry( $parent, $data ){
		if( !array_key_exists( $parent, self::$subnavigation )){
			self::$subnavigation[$parent] = array();
		}
		self::$subnavigation[$parent][] = $data;
		return true;
	}

	/**
	 * @brief marks a navigation entry as active
	 * @param $id id of the entry
	 * @returns true/false
	 *
	 * 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( $id ){
		self::$activeapp = $id;
		return true;
	}

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

	/**
	 * @brief registers an admin page
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function registers a admin page that will be shown in the admin
	 * menu. $data is an associative array.
	 * The following keys are required:
	 *   - id: unique id for this entry ("files_admin")
	 *   - href: link to the admin page
	 *   - name: Human readable name ("Files Administration")
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     the list. Lower values come first.
	 */
	public static function addAdminPage( $data = array()){
		// TODO: write function
		OC_APP::$adminpages[] = $data;
		return true;
	}

	/**
	 * @brief registers a settings page
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function registers a settings page. $data is an associative array.
	 * The following keys are required:
	 *   - app: app the settings belong to ("files")
	 *   - id: unique id for this entry ("files_public")
	 *   - href: link to the admin page
	 *   - name: Human readable name ("Public files")
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     the list. Lower values come first.
	 *
	 * For the main settings page of an app, the keys "app" and "id" have to be
	 * the same.
	 */
	public static function addSettingsPage( $data = array()){
		// TODO: write function
		OC_APP::$settingspages[] = $data;
		return true;
	}

	/**
	 * @brief Returns the navigation
	 * @returns associative 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
	 *   - children: array that is empty if the key "active" is false or
	 *     contains the subentries if the key "active" is true
	 */
	public static function getNavigation(){
		$navigation = self::proceedNavigation( self::$navigation );
		$navigation = self::addSubNavigation( $navigation );
		return $navigation;
	}

	/**
	 * @brief Returns the Settings Navigation
	 * @returns associative array
	 *
	 * This function returns an array containing all settings pages added. The
	 * entries are sorted by the key "order" ascending.
	 */
	public static function getSettingsNavigation(){
		$navigation = self::proceedNavigation( self::$settingspages );
		$navigation = self::addSubNavigation( $navigation );

		return $navigation;
	}

	/**
	 * @brief Returns the admin navigation
	 * @returns associative array
	 *
	 * This function returns an array containing all admin pages added. The
	 * entries are sorted by the key "order" ascending.
	 */
	public static function getAdminNavigation(){
		$navigation = self::proceedNavigation( self::$adminpages );
		$navigation = self::addSubNavigation( $navigation );

		return $navigation;
	}

	/// Private foo
	private static function addSubNavigation( $list ){
		$found = false;
		foreach( self::$subnavigation as $parent => $selection ){
			foreach( $selection as $subentry ){
				if( $subentry["id"] == self::$activeapp ){
					foreach( $list as &$naventry ){
						if( $naventry["id"] == $parent ){
							$naventry["active"] = true;
							$naventry["subnavigation"] = $selection;
						}
						else{
							$naventry["active"] = false;
						}
					}
					$found = true;
				}
			}
		}

		return $list;
	}

	/// This is private as well. It simply works, so don't ask for more details
	private static function proceedNavigation( $list ){
		foreach( $list as &$naventry ){
			$naventry["subnavigation"] = array();
			if( $naventry["id"] == self::$activeapp ){
				$naventry["active"] = true;
				if( array_key_exists( $naventry["id"], self::$subnavigation )){
					$naventry["subnavigation"] = self::$subnavigation[$naventry["id"]];
				}
			}
			else{
				$naventry["active"] = false;
			}
		}

		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;
	}
	
	/**
	 * @brief Read app metadata from the info.xml file
	 * @param string $appid id of the app
	 * @returns array
	*/
	public static function getAppInfo($appid){
		$file='apps/'.$appid.'/appinfo/info.xml';
		if(!is_file($file)){
			return array();
		}
		$data=array();
		$plugin=new DOMDocument();
		$plugin->load($file);
		$info=$plugin->getElementsByTagName('info');
		if($info->length > 0){
			$info=$info->item(0);
			$data['info']=array();
			foreach($info->childNodes as $child){
				if($child->nodeType==XML_ELEMENT_NODE){
					$data[$child->tagName]=$child->textContent;
				}
			}
		}
		return $data;
	}
}
?><commit_msg>use simplexml instead of dom for OC_APP::getAppInfo()<commit_after><?php
/**
 * ownCloud
 *
 * @author <NAME>
 * @author <NAME>
 * @copyright 2010 <NAME> <EMAIL>
 *
 * 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 $init = false;
	static private $apps = array();
	static private $activeapp = "";
	static private $adminpages = array();
	static private $settingspages = array();
	static private $navigation = array();
	static private $subnavigation = array();

	/**
	 * @brief loads all apps
	 * @returns true/false
	 *
	 * 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.
	 */
	public static function loadApps(){
		global $SERVERROOT;

		// Did we allready load everything?
		if( self::$init ){
			return true;
		}

		// Our very own core apps are hardcoded
		foreach( array( "admin", "files", "log", "help", "settings" ) as $app ){
			require( "$app/appinfo/app.php" );
		}

		// The rest comes here
		$dir = opendir( "$SERVERROOT/apps" );
		while( false !== ( $filename = readdir( $dir ))){
			if( substr( $filename, 0, 1 ) != '.' ){
				if( file_exists( "$SERVERROOT/apps/$filename/appinfo/app.php" )){
					require( "apps/$filename/appinfo/app.php" );
				}
			}
		}
		closedir( $dir );

		self::$init = true;

		// return
		return true;
	}

	/**
	 * @brief makes owncloud aware of this app
	 * @param $data array with all information
	 * @returns true/false
	 *
	 * This function registers the application. $data is an associative array.
	 * The following keys are required:
	 *   - id: id of the application, has to be unique ("addressbook")
	 *   - name: Human readable name ("Addressbook")
	 *   - version: array with Version (major, minor, bugfix) ( array(1, 0, 2))
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     a list of applications. Lower values come first.
	 *
	 */
	public static function register( $data ){
		OC_APP::$apps[] = $data;
	}

	/**
	 * @brief returns information of all apps
	 * @return array with all information
	 *
	 * This function returns all data it got via register().
	 */
	public static function get(){
		// TODO: write function
		return OC_APP::$apps;
	}

	/**
	 * @brief adds an entry to the navigation
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * 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( $data ){
		// TODO: write function
		OC_APP::$navigation[] = $data;
		return true;
	}

	/**
	 * @brief adds a sub entry to the navigation
	 * @param $parent id of the parent
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function adds a new sub entry to the navigation visible to users.
	 * these entries are visible only if the parent navigation entry is marked
	 * as being active (see activateNavigationEntry()). $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 addNavigationSubEntry( $parent, $data ){
		if( !array_key_exists( $parent, self::$subnavigation )){
			self::$subnavigation[$parent] = array();
		}
		self::$subnavigation[$parent][] = $data;
		return true;
	}

	/**
	 * @brief marks a navigation entry as active
	 * @param $id id of the entry
	 * @returns true/false
	 *
	 * 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( $id ){
		self::$activeapp = $id;
		return true;
	}

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

	/**
	 * @brief registers an admin page
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function registers a admin page that will be shown in the admin
	 * menu. $data is an associative array.
	 * The following keys are required:
	 *   - id: unique id for this entry ("files_admin")
	 *   - href: link to the admin page
	 *   - name: Human readable name ("Files Administration")
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     the list. Lower values come first.
	 */
	public static function addAdminPage( $data = array()){
		// TODO: write function
		OC_APP::$adminpages[] = $data;
		return true;
	}

	/**
	 * @brief registers a settings page
	 * @param $data array containing the data
	 * @returns true/false
	 *
	 * This function registers a settings page. $data is an associative array.
	 * The following keys are required:
	 *   - app: app the settings belong to ("files")
	 *   - id: unique id for this entry ("files_public")
	 *   - href: link to the admin page
	 *   - name: Human readable name ("Public files")
	 *
	 * The following keys are optional:
	 *   - order: integer, that influences the position of your application in
	 *     the list. Lower values come first.
	 *
	 * For the main settings page of an app, the keys "app" and "id" have to be
	 * the same.
	 */
	public static function addSettingsPage( $data = array()){
		// TODO: write function
		OC_APP::$settingspages[] = $data;
		return true;
	}

	/**
	 * @brief Returns the navigation
	 * @returns associative 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
	 *   - children: array that is empty if the key "active" is false or
	 *     contains the subentries if the key "active" is true
	 */
	public static function getNavigation(){
		$navigation = self::proceedNavigation( self::$navigation );
		$navigation = self::addSubNavigation( $navigation );
		return $navigation;
	}

	/**
	 * @brief Returns the Settings Navigation
	 * @returns associative array
	 *
	 * This function returns an array containing all settings pages added. The
	 * entries are sorted by the key "order" ascending.
	 */
	public static function getSettingsNavigation(){
		$navigation = self::proceedNavigation( self::$settingspages );
		$navigation = self::addSubNavigation( $navigation );

		return $navigation;
	}

	/**
	 * @brief Returns the admin navigation
	 * @returns associative array
	 *
	 * This function returns an array containing all admin pages added. The
	 * entries are sorted by the key "order" ascending.
	 */
	public static function getAdminNavigation(){
		$navigation = self::proceedNavigation( self::$adminpages );
		$navigation = self::addSubNavigation( $navigation );

		return $navigation;
	}

	/// Private foo
	private static function addSubNavigation( $list ){
		$found = false;
		foreach( self::$subnavigation as $parent => $selection ){
			foreach( $selection as $subentry ){
				if( $subentry["id"] == self::$activeapp ){
					foreach( $list as &$naventry ){
						if( $naventry["id"] == $parent ){
							$naventry["active"] = true;
							$naventry["subnavigation"] = $selection;
						}
						else{
							$naventry["active"] = false;
						}
					}
					$found = true;
				}
			}
		}

		return $list;
	}

	/// This is private as well. It simply works, so don't ask for more details
	private static function proceedNavigation( $list ){
		foreach( $list as &$naventry ){
			$naventry["subnavigation"] = array();
			if( $naventry["id"] == self::$activeapp ){
				$naventry["active"] = true;
				if( array_key_exists( $naventry["id"], self::$subnavigation )){
					$naventry["subnavigation"] = self::$subnavigation[$naventry["id"]];
				}
			}
			else{
				$naventry["active"] = false;
			}
		}

		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;
	}
	
	/**
	 * @brief Read app metadata from the info.xml file
	 * @param string $appid id of the app
	 * @returns array
	*/
	public static function getAppInfo($appid){
		$file='apps/'.$appid.'/appinfo/info.xml';
		if(!is_file($file)){
			return array();
		}
		$data=array();
		$content=file_get_contents($file);
		$xml = new SimpleXMLElement($content);
		$info=$xml->info[0];
		$data['info']=array();
		foreach($info->children() as $child){
			$data[$child->getName()]=(string)$child;
		}
		return $data;
	}
}
?>
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