nextcloud/lib/app.php

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<?php
/**
* ownCloud
*
* @author Frank Karlitschek
* @author Jakob Sack
* @copyright 2010 Frank Karlitschek karlitschek@kde.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 $init = false;
static private $apps = array();
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static private $activeapp = '';
static private $adminpages = array();
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static private $settingspages = array();
static private $navigation = array();
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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.
*/
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public static function loadApps(){
global $SERVERROOT;
// Did we allready load everything?
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if( self::$init ){
return true;
}
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// Our very own core apps are hardcoded
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foreach( array( 'admin', 'files', 'log', 'help', 'settings' ) as $app ){
require( $app.'/appinfo/app.php' );
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}
// The rest comes here
$apps = OC_APPCONFIG::getApps();
foreach( $apps as $app ){
if( self::isEnabled( $app )){
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if(is_file($SERVERROOT.'/apps/'.$app.'/appinfo/app.php')){
require( 'apps/'.$app.'/appinfo/app.php' );
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}
}
}
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self::$init = true;
// return
return true;
}
/**
* @brief checks whether or not an app is enabled
* @param $app app
* @returns true/false
*
* This function checks whether or not an app is enabled.
*/
public static function isEnabled( $app ){
if( 'yes' == OC_APPCONFIG::getValue( $app, 'enabled' )){
return true;
}
return false;
}
/**
* @brief enables an app
* @param $app app
* @returns true/false
*
* This function set an app as enabled in appconfig.
*/
public static function enable( $app ){
OC_APPCONFIG::setValue( $app, 'enabled', 'yes' );
}
/**
* @brief enables an app
* @param $app app
* @returns true/false
*
* This function set an app as enabled in appconfig.
*/
public static function disable( $app ){
OC_APPCONFIG::setValue( $app, 'enabled', 'no' );
}
/**
* @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:
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* - 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[] = $data;
}
/**
* @brief returns information of all apps
* @return array with all information
*
* This function returns all data it got via register().
*/
public static function get(){
// TODO: write function
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return OC_APP::$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:
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* - id: unique id for this entry ('addressbook_index')
* - href: link to the page
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* - 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:
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* - id: unique id for this entry ('addressbook_index')
* - href: link to the page
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* - 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 ){
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if( !array_key_exists( $parent, self::$subnavigation )){
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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
*
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* 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.
*/
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public static function setActiveNavigationEntry( $id ){
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self::$activeapp = $id;
return true;
}
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/**
* @brief gets the active Menu entry
* @returns id or empty string
*
* This function returns the id of the active navigation entry (set by
* setActiveNavigationEntry
*/
public static function getActiveNavigationEntry(){
return self::$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:
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* - id: unique id for this entry ('files_admin')
* - href: link to the admin page
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* - 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;
}
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/**
* @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:
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* - app: app the settings belong to ('files')
* - id: unique id for this entry ('files_public')
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* - href: link to the admin page
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* - name: Human readable name ('Public files')
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*
* The following keys are optional:
* - order: integer, that influences the position of your application in
* the list. Lower values come first.
*
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* For the main settings page of an app, the keys 'app' and 'id' have to be
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* the same.
*/
public static function addSettingsPage( $data = array()){
// TODO: write function
OC_APP::$settingspages[] = $data;
return true;
}
/**
* @brief Returns the navigation
* @returns associative array
*
* This function returns an array containing all entries added. The
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* entries are sorted by the key 'order' ascending. Additional to the keys
* given for each app the following keys exist:
* - active: boolean, signals if the user is on this navigation entry
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* - children: array that is empty if the key 'active' is false or
* contains the subentries if the key 'active' is true
*/
public static function getNavigation(){
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$navigation = self::proceedNavigation( self::$navigation );
$navigation = self::addSubNavigation( $navigation );
return $navigation;
}
/**
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* @brief Returns the Settings Navigation
* @returns associative array
*
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* This function returns an array containing all settings pages added. The
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* entries are sorted by the key 'order' ascending.
*/
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public static function getSettingsNavigation(){
$navigation = self::proceedNavigation( self::$settingspages );
$navigation = self::addSubNavigation( $navigation );
return $navigation;
}
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/**
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* @brief Returns the admin navigation
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* @returns associative array
*
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* This function returns an array containing all admin pages added. The
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* entries are sorted by the key 'order' ascending.
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*/
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public static function getAdminNavigation(){
$navigation = self::proceedNavigation( self::$adminpages );
$navigation = self::addSubNavigation( $navigation );
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return $navigation;
}
/// Private foo
private static function addSubNavigation( $list ){
$found = false;
foreach( self::$subnavigation as $parent => $selection ){
foreach( $selection as $subentry ){
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if( $subentry['id'] == self::$activeapp ){
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foreach( $list as &$naventry ){
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if( $naventry['id'] == $parent ){
$naventry['active'] = true;
$naventry['subnavigation'] = $selection;
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}
else{
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$naventry['active'] = false;
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}
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} unset( $naventry );
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$found = true;
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}
}
}
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// Mark subentry as active
foreach( $list as &$naventry ){
if( $naventry['active'] ){
foreach( $naventry['subnavigation'] as &$subnaventry ){
$subnaventry['active'] = $subnaventry['id'] == self::$activeapp? true : false;
} unset( $subnaventry );
}
} unset( $naventry );
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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 ){
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$naventry['subnavigation'] = array();
if( $naventry['id'] == self::$activeapp ){
$naventry['active'] = true;
if( array_key_exists( $naventry['id'], self::$subnavigation )){
$naventry['subnavigation'] = self::$subnavigation[$naventry['id']];
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}
}
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else{
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$naventry['active'] = false;
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}
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} unset( $naventry );
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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;
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}
/**
* @brief Read app metadata from the info.xml file
* @param string $appid id of the app or the path of the info.xml file
* @returns array
*/
public static function getAppInfo($appid){
if(is_file($appid)){
$file=$appid;
}else{
$file='apps/'.$appid.'/appinfo/info.xml';
if(!is_file($file)){
return array();
}
}
$data=array();
$content=file_get_contents($file);
$xml = new SimpleXMLElement($content);
$data['info']=array();
foreach($xml->children() as $child){
$data[$child->getName()]=(string)$child;
}
return $data;
}
/**
* get the id of loaded app
* @return string
*/
public static function getCurrentApp(){
global $WEBROOT;
$script=substr($_SERVER["SCRIPT_NAME"],strlen($WEBROOT)+1);
$topFolder=substr($script,0,strpos($script,'/'));
if($topFolder=='apps'){
$length=strlen($topFolder);
return substr($script,$length+1,strpos($script,'/',$length+1)-$length-1);
}else{
return $topFolder;
}
}
}
?>