mirror of
https://github.com/EGroupware/egroupware.git
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1092 lines
34 KiB
PHP
1092 lines
34 KiB
PHP
<?php
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/**
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* API - Interapplicaton links BO layer
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*
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* Links have two ends each pointing to an entry, each entry is a double:
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* - app app-name or directory-name of an egw application, eg. 'infolog'
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* - id this is the id, eg. an integer or a tupple like '0:INBOX:1234'
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*
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* @link http://www.egroupware.org
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright 2001-2008 by RalfBecker@outdoor-training.de
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* @license http://opensource.org/licenses/gpl-license.php GPL - GNU General Public License
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* @package api
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* @subpackage link
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* @version $Id$
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*/
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/**
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* Generalized linking between entries of eGroupware apps
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*
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* Please note: this class can NOT and does not need to be initialised, all methods are static
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*
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* To participate in the linking an applications has to implement the following hooks:
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*
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* /**
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* * Hook called by link-class to include app in the appregistry of the linkage
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* *
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* * @param array/string $location location and other parameters (not used)
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* * @return array with method-names
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* *%
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* function search_link($location)
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* {
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* return array(
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* 'query' => 'app.class.link_query', // method to search app for a pattern: array link_query(string $pattern)
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* 'title' => 'app.class.link_title', // method to return title of an entry of app: string/false/null link_title(int/string $id)
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* 'titles' => 'app.class.link_titles', // method to return multiple titles: array link_title(array $ids)
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* 'view' => array( // get parameters to view an entry of app
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* 'menuaction' => 'app.class.method',
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* ),
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* 'view_id' => 'app_id', // name of get parameter of the id
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* 'view_popup' => '400x300', // size of popup (XxY), if view is in popup
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* 'add' => array( // get parameter to add an empty entry to app
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* 'menuaction' => 'app.class.method',
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* ),
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* 'add_app' => 'link_app', // name of get parameter to add links to other app
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* 'add_id' => 'link_id', // --------------------- " ------------------- id
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* 'add_popup' => '400x300', // size of popup (XxY), if add is in popup
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* 'notify' => 'app.class.method', // method to be called if an other applications liks or unlinks with app: notify(array $data)
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* 'file_access' => 'app.class.method', // method to be called to check file access rights, see links_stream_wrapper class
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* // boolean file_access(string $id,int $check,string $rel_path)
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* 'find_extra' => array('name_preg' => '/^(?!.picture.jpg)$/') // extra options to egw_vfs::find, to eg. remove some files from the list of attachments
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* }
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* All entries are optional, thought you only get conected functionality, if you implement them ...
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*
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* The BO-layer implementes some extra features on top of the so-layer:
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* 1) It handles links to not already existing entries. This is used by the eTemplate link-widget, which allows to
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* setup links even for new / not already existing entries, before they get saved.
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* In that case you have to set the first id to 0 for the link-static function and pass the array returned in that id
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* (not the return-value) after saveing your new entry again to the link static function.
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* 2) Attaching files: they are saved in the vfs and not the link-table (!).
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* Attached files are stored under $vfs_basedir='/infolog' in the vfs!
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* 3) It manages the link-registry, in which apps can register themselfs by implementing some hooks
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* 4) It notifies apps, who registered for that service, about changes in the links their entries
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*/
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class egw_link extends solink
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{
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/**
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* appname used for returned attached files (!= 'filemanager'!)
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*/
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const VFS_APPNAME = 'file'; // pseudo-appname for own file-attachments in vfs, this is NOT the vfs-app
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/**
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* Baseurl for the attachments in the vfs
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*/
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const VFS_BASEURL = 'vfs://default/apps';
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/**
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* Turns on debug-messages
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*/
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const DEBUG = false;
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/**
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* other apps can participate in the linking by implementing a 'search_link' hook, which
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* has to return an array in the format of an app_register entry below
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*
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* @var array
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*/
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static $app_register = array(
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'felamimail' => array(
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'add' => array(
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'menuaction' => 'felamimail.uicompose.compose',
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),
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'add_popup' => '700x750',
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),
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);
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/**
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* Caches link titles for a better performance
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*
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* @var array
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*/
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private static $title_cache = array();
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/**
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* Cache file access permissions
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*
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* @var array
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*/
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private static $file_access_cache = array();
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/**
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* Private constructor to forbid instanciated use
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*
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*/
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private function __construct()
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{
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}
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/**
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* initialize our static vars
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*/
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static function init_static( )
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{
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// other apps can participate in the linking by implementing a search_link hook, which
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// has to return an array in the format of an app_register entry
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// for performance reasons, we do it only once / cache it in the session
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if (!($search_link_hooks = $GLOBALS['egw']->session->appsession('search_link_hooks','phpgwapi')))
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{
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$search_link_hooks = $GLOBALS['egw']->hooks->process('search_link');
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$GLOBALS['egw']->session->appsession('search_link_hooks','phpgwapi',$search_link_hooks);
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}
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if (is_array($search_link_hooks))
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{
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foreach($search_link_hooks as $app => $data)
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{
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if (is_array($data))
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{
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self::$app_register[$app] = $data;
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}
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}
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}
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if (!(self::$title_cache = $GLOBALS['egw']->session->appsession('link_title_cache','phpgwapi')))
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{
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self::$title_cache = array();
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}
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if (!(self::$file_access_cache = $GLOBALS['egw']->session->appsession('link_file_access_cache','phpgwapi')))
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{
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self::$file_access_cache = array();
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}
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//error_log(__METHOD__.'() items in title-cache: '.count(self::$title_cache).' file-access-cache: '.count(self::$file_access_cache));
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}
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/**
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* Called by egw::egw_final to store the title-cache in the session
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*
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*/
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static function save_session_cache()
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{
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//error_log(__METHOD__.'() items in title-cache: '.count(self::$title_cache).' file-access-cache: '.count(self::$file_access_cache));
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$GLOBALS['egw']->session->appsession('link_title_cache','phpgwapi',self::$title_cache);
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$GLOBALS['egw']->session->appsession('link_file_access_cache','phpgwapi',self::$file_access_cache);
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}
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/**
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* creats a link between $app1,$id1 and $app2,$id2 - $id1 does NOT need to exist yet
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*
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* Does NOT check if link already exists.
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* File-attachments return a negative link-id !!!
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*
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* @param string $app1 app of $id1
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* @param string/array &$id1 id of item to linkto or 0 if item not yet created or array with links
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* of not created item or $file-array if $app1 == self::VFS_APPNAME (see below).
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* If $id==0 it will be set on return to an array with the links for the new item.
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* @param string/array $app2 app of 2.linkend or array with links ($id2 not used)
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* @param string $id2='' id of 2. item of $file-array if $app2 == self::VFS_APPNAME (see below)<br>
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* $file array with informations about the file in format of the etemplate file-type<br>
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* $file['name'] name of the file (no directory)<br>
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* $file['type'] mine-type of the file<br>
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* $file['tmp_name'] name of the uploaded file (incl. directory)<br>
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* $file['path'] path of the file on the client computer<br>
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* $file['ip'] of the client (path and ip in $file are only needed if u want a symlink (if possible))
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* @param string $remark='' Remark to be saved with the link (defaults to '')
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* @param int $owner=0 Owner of the link (defaults to user)
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* @param int $lastmod=0 timestamp of last modification (defaults to now=time())
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* @param int $no_notify=0 &1 dont notify $app1, &2 dont notify $app2
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* @return int/boolean False (for db or param-error) or on success link_id (Please not the return-value of $id1)
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*/
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static function link( $app1,&$id1,$app2,$id2='',$remark='',$owner=0,$lastmod=0,$no_notify=0 )
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{
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if (self::DEBUG)
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{
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echo "<p>egw_link::link('$app1',$id1,'".print_r($app2,true)."',".print_r($id2,true).",'$remark',$owner,$lastmod)</p>\n";
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}
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if (!$app1 || !$app2 || $app1 == $app2 && $id1 == $id2)
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{
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return False;
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}
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if (is_array($id1) || !$id1) // create link only in $id1 array
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{
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if (!is_array($id1))
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{
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$id1 = array( );
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}
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$link_id = self::temp_link_id($app2,$id2);
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$id1[$link_id] = array(
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'app' => $app2,
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'id' => $id2,
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'remark' => $remark,
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'owner' => $owner,
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'link_id' => $link_id,
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'lastmod' => time()
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);
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if (self::DEBUG)
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{
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_debug_array($id1);
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}
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return $link_id;
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}
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if (is_array($app2) && !$id2)
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{
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reset($app2);
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$link_id = True;
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while ($link_id && list(,$link) = each($app2))
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{
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if (!is_array($link)) // check for unlink-marker
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{
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//echo "<b>link='$link' is no array</b><br>\n";
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continue;
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}
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if ($link['app'] == self::VFS_APPNAME)
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{
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$link_id = self::attach_file($app1,$id1,$link['id'],$link['remark']);
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}
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else
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{
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$link_id = solink::link($app1,$id1,$link['app'],$link['id'],
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$link['remark'],$link['owner'],$link['lastmod']);
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// notify both sides
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if (!($no_notify&2)) self::notify('link',$link['app'],$link['id'],$app1,$id1,$link_id);
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if (!($no_notify&1)) self::notify('link',$app1,$id1,$link['app'],$link['id'],$link_id);
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}
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}
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return $link_id;
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}
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if ($app1 == self::VFS_APPNAME)
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{
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return self::attach_file($app2,$id2,$id1,$remark);
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}
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elseif ($app2 == self::VFS_APPNAME)
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{
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return self::attach_file($app1,$id1,$id2,$remark);
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}
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$link_id = solink::link($app1,$id1,$app2,$id2,$remark,$owner);
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if (!($no_notify&2)) self::notify('link',$app2,$id2,$app1,$id1,$link_id);
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if (!($no_notify&1)) self::notify('link',$app1,$id1,$app2,$id2,$link_id);
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return $link_id;
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}
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/**
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* generate temporary link_id used as array-key
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*
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* @param string $app app-name
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* @param mixed $id
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* @return string
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*/
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static function temp_link_id($app,$id)
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{
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return $app.':'.($app != self::VFS_APPNAME ? $id : $id['name']);
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}
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/**
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* returns array of links to $app,$id (reimplemented to deal with not yet created items)
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*
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* @param string $app appname
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* @param string/array $id id of entry in $app or array of links if entry not yet created
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* @param string $only_app if set return only links from $only_app (eg. only addressbook-entries) or NOT from if $only_app[0]=='!'
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* @param string $order='link_lastmod DESC' defaults to newest links first
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* @return array of links or empty array if no matching links found
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*/
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static function get_links( $app,$id,$only_app='',$order='link_lastmod DESC' )
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{
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if (self::DEBUG) echo "<p>egw_link::get_links(app='$app',id='$id',only_app='$only_app',order='$order')</p>\n";
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if (is_array($id) || !$id)
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{
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$ids = array();
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if (is_array($id))
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{
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if (($not_only = $only_app[0] == '!'))
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{
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$only_app = substr(1,$only_app);
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}
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foreach (array_reverse($id) as $link)
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{
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if (is_array($link) // check for unlink-marker
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&& !($only_app && $not_only == ($link['app'] == $only_app)))
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{
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$ids[$link['link_id']] = $only_app ? $link['id'] : $link;
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}
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}
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}
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return $ids;
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}
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$ids = solink::get_links($app,$id,$only_app,$order);
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if (empty($only_app) || $only_app == self::VFS_APPNAME ||
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($only_app[0] == '!' && $only_app != '!'.self::VFS_APPNAME))
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{
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if ($vfs_ids = self::list_attached($app,$id))
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{
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$ids += $vfs_ids;
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}
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}
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//echo "ids=<pre>"; print_r($ids); echo "</pre>\n";
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return $ids;
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}
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/**
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* Query the links of multiple entries of one application
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*
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* @ToDo also query the attachments in a single query, eg. via a directory listing of /apps/$app
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* @param string $app
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* @param array $ids
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* @param boolean $cache_titles=true should all titles be queryed and cached (allows to query each link app only once!)
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* @param string $only_app if set return only links from $only_app (eg. only addressbook-entries) or NOT from if $only_app[0]=='!'
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* @param string $order='link_lastmod DESC' defaults to newest links first
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* @return array of $id => array($links) pairs
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*/
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static function get_links_multiple($app,array $ids,$cache_titles=true,$only_app='',$order='link_lastmod DESC' )
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{
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if (self::DEBUG) echo "<p>".__METHOD__."('$app',".print_r($ids,true).",$cache_titles,'$only_app','$order')</p>\n";
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if (!$ids)
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{
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return array(); // no ids are linked to nothing
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}
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$links = solink::get_links($app,$ids,$only_app,$order);
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if (empty($only_app) || $only_app == self::VFS_APPNAME ||
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($only_app[0] == '!' && $only_app != '!'.self::VFS_APPNAME))
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{
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// todo do that in a single query, eg. directory listing, too
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foreach($ids as $id)
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{
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if (!isset($links[$id]))
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{
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$links[$id] = array();
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}
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if ($vfs_ids = self::list_attached($app,$id))
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{
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$links[$id] += $vfs_ids;
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}
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}
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}
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if ($cache_titles)
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{
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// agregate links by app
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$app_ids = array();
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foreach($links as $src_id => &$targets)
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{
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foreach($targets as $link)
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{
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$app_ids[$link['app']][] = $link['id'];
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}
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}
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foreach($app_ids as $app => $a_ids)
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{
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self::titles($app,array_unique($a_ids));
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}
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}
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return $links;
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}
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/**
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* Read one link specified by it's link_id or by the two end-points
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*
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* If $id is an array (links not yet created) only link_ids are allowed.
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*
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* @param int/string $app_link_id > 0 link_id of link or app-name of link
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* @param string/array $id='' id if $app_link_id is an appname or array with links, if 1. entry not yet created
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* @param string $app2='' second app
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* @param string $id2='' id in $app2
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* @return array with link-data or False
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*/
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static function get_link($app_link_id,$id='',$app2='',$id2='')
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{
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if (self::DEBUG)
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{
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echo '<p>'.__METHOD__."($app_link_id,$id,$app2,$id2)</p>\n"; echo function_backtrace();
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}
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if (is_array($id))
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{
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if (strpos($app_link_id,':') === false) $app_link_id = self::temp_link_id($app2,$id2); // create link_id of temporary link, if not given
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if (isset($id[$app_link_id]) && is_array($id[$app_link_id])) // check for unlinked-marker
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{
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return $id[$app_link_id];
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}
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return False;
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}
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if ((int)$app_link_id < 0 || $app_link_id == self::VFS_APPNAME || $app2 == self::VFS_APPNAME)
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{
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if ((int)$app_link_id < 0) // vfs link_id ?
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{
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return self::fileinfo2link(-$app_link_id);
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}
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if ($app_link_id == self::VFS_APPNAME)
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{
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return self::info_attached($app2,$id2,$id);
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}
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return self::info_attached($app_link_id,$id,$id2);
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}
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return solink::get_link($app_link_id,$id,$app2,$id2);
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}
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/**
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* Remove link with $link_id or all links matching given $app,$id
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*
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* Note: if $link_id != '' and $id is an array: unlink removes links from that array only
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* unlink has to be called with &$id to see the result (depricated) or unlink2 has to be used !!!
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*
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* @param $link_id link-id to remove if > 0
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* @param string $app='' appname of first endpoint
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* @param string/array $id='' id in $app or array with links, if 1. entry not yet created
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* @param string $app2='' app of second endpoint
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* @param string $id2='' id in $app2
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* @return the number of links deleted
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*/
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static function unlink($link_id,$app='',$id='',$owner='',$app2='',$id2='')
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{
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return self::unlink2($link_id,$app,$id,$owner,$app2,$id2);
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}
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/**
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* Remove link with $link_id or all links matching given $app,$id
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*
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* @param $link_id link-id to remove if > 0
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* @param string $app='' appname of first endpoint
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* @param string/array &$id='' id in $app or array with links, if 1. entry not yet created
|
|
* @param string $app2='' app of second endpoint, or !file (other !app are not yet supported!)
|
|
* @param string $id2='' id in $app2
|
|
* @return the number of links deleted
|
|
*/
|
|
static function unlink2($link_id,$app,&$id,$owner='',$app2='',$id2='')
|
|
{
|
|
if (self::DEBUG)
|
|
{
|
|
echo "<p>egw_link::unlink('$link_id','$app','$id','$owner','$app2','$id2')</p>\n";
|
|
}
|
|
if ($link_id < 0) // vfs-link?
|
|
{
|
|
return self::delete_attached(-$link_id);
|
|
}
|
|
elseif ($app == self::VFS_APPNAME)
|
|
{
|
|
return self::delete_attached($app2,$id2,$id);
|
|
}
|
|
elseif ($app2 == self::VFS_APPNAME)
|
|
{
|
|
return self::delete_attached($app,$id,$id2);
|
|
}
|
|
if (!is_array($id))
|
|
{
|
|
if (!$link_id && !$app2 && !$id2 && $app2 != '!'.self::VFS_APPNAME)
|
|
{
|
|
self::delete_attached($app,$id); // deleting all attachments
|
|
self::delete_cache($app,$id);
|
|
}
|
|
$deleted =& solink::unlink($link_id,$app,$id,$owner,$app2 != '!'.self::VFS_APPNAME ? $app2 : '',$id2);
|
|
|
|
// only notify on real links, not the one cached for writing or fileattachments
|
|
self::notify_unlink($deleted);
|
|
|
|
return count($deleted);
|
|
}
|
|
if (!$link_id) $link_id = self::temp_link_id($app2,$id2); // create link_id of temporary link, if not given
|
|
|
|
if (isset($id[$link_id]))
|
|
{
|
|
$id[$link_id] = False; // set the unlink marker
|
|
|
|
if (self::DEBUG)
|
|
{
|
|
_debug_array($id);
|
|
}
|
|
return True;
|
|
}
|
|
return False;
|
|
}
|
|
|
|
/**
|
|
* get list/array of link-aware apps the user has rights to use
|
|
*
|
|
* @param string $must_support capability the apps need to support, eg. 'add', default ''=list all apps
|
|
* @return array with app => title pairs
|
|
*/
|
|
static function app_list($must_support='')
|
|
{
|
|
$apps = array();
|
|
foreach(self::$app_register as $app => $reg)
|
|
{
|
|
if ($must_support && !isset($reg[$must_support])) continue;
|
|
|
|
if ($GLOBALS['egw_info']['user']['apps'][$app])
|
|
{
|
|
$apps[$app] = $GLOBALS['egw_info']['apps'][$app]['title'];
|
|
}
|
|
}
|
|
return $apps;
|
|
}
|
|
|
|
/**
|
|
* Searches for a $pattern in the entries of $app
|
|
*
|
|
* @param string $app app to search
|
|
* @param string $pattern pattern to search
|
|
* @return array with $id => $title pairs of matching entries of app
|
|
*/
|
|
static function query($app,$pattern)
|
|
{
|
|
if ($app == '' || !is_array($reg = self::$app_register[$app]) || !isset($reg['query']))
|
|
{
|
|
return array();
|
|
}
|
|
$method = $reg['query'];
|
|
|
|
if (self::DEBUG)
|
|
{
|
|
echo "<p>egw_link::query('$app','$pattern') => '$method'</p>\n";
|
|
}
|
|
return ExecMethod($method,$pattern);
|
|
}
|
|
|
|
/**
|
|
* returns the title (short description) of entry $id and $app
|
|
*
|
|
* @param string $app appname
|
|
* @param string $id id in $app
|
|
* @param array $link=null link-data for file-attachments
|
|
* @return string/boolean string with title, null if $id does not exist in $app or false if no perms to view it
|
|
*/
|
|
static function title($app,$id,$link=null)
|
|
{
|
|
if (!$id) return '';
|
|
|
|
$title =& self::get_cache($app,$id);
|
|
if (isset($title))
|
|
{
|
|
if (self::DEBUG) echo '<p>'.__METHOD__."('$app','$id')='$title' (from cache)</p>\n";
|
|
return $title;
|
|
}
|
|
if ($app == self::VFS_APPNAME)
|
|
{
|
|
if (is_array($id) && $link)
|
|
{
|
|
$link = $id;
|
|
$title = $link['name'];
|
|
}
|
|
else
|
|
{
|
|
$title = $id;
|
|
}
|
|
if (is_array($link))
|
|
{
|
|
$title .= ': '.$link['type'] . ' '.egw_vfs::hsize($link['size']);
|
|
}
|
|
if (self::DEBUG) echo '<p>'.__METHOD__."('$app','$id')='$title' (file)</p>\n";
|
|
return $title;
|
|
}
|
|
if ($app == '' || !is_array($reg = self::$app_register[$app]) || !isset($reg['title']))
|
|
{
|
|
if (self::DEBUG) echo "<p>".__METHOD__."('$app','$id') something is wrong!!!</p>\n";
|
|
return array();
|
|
}
|
|
$method = $reg['title'];
|
|
|
|
$title = ExecMethod($method,$id);
|
|
|
|
if ($id && is_null($title)) // $app,$id has been deleted ==> unlink all links to it
|
|
{
|
|
self::unlink(0,$app,$id);
|
|
if (self::DEBUG) echo '<p>'.__METHOD__."('$app','$id') unlinked, as $method returned null</p>\n";
|
|
return False;
|
|
}
|
|
if (self::DEBUG) echo '<p>'.__METHOD__."('$app','$id')='$title' (from $method)</p>\n";
|
|
|
|
return $title;
|
|
}
|
|
|
|
/**
|
|
* Query the titles off multiple id's of one app
|
|
*
|
|
* Apps can implement that hook, if they have a quicker (eg. less DB queries) method to query the title of multiple entries.
|
|
* If it's not implemented, we call the regular title method multiple times.
|
|
*
|
|
* @param string $app
|
|
* @param array $ids
|
|
*/
|
|
static function titles($app,array $ids)
|
|
{
|
|
if (self::DEBUG)
|
|
{
|
|
echo "<p>".__METHOD__."($app,".implode(',',$ids).")</p>\n";
|
|
}
|
|
$titles = $ids_to_query = array();
|
|
foreach($ids as $id)
|
|
{
|
|
$title =& self::get_cache($app,$id);
|
|
if (!isset($title))
|
|
{
|
|
if (isset(self::$app_register[$app]['titles']))
|
|
{
|
|
$ids_to_query[] = $id; // titles method --> collect links to query at once
|
|
}
|
|
else
|
|
{
|
|
$title = self::title($app,$id); // no titles method --> fallback to query each link separate
|
|
}
|
|
}
|
|
$titles[$id] = $title;
|
|
}
|
|
if ($ids_to_query)
|
|
{
|
|
foreach(ExecMethod(self::$app_register[$app]['titles'],$ids_to_query) as $id => $t)
|
|
{
|
|
$title =& self::get_cache($app,$id);
|
|
$titles[$id] = $title = $t;
|
|
}
|
|
}
|
|
return $titles;
|
|
}
|
|
|
|
/**
|
|
* Add new entry to $app, evtl. already linked to $to_app, $to_id
|
|
*
|
|
* @param string $app appname of entry to create
|
|
* @param string $to_app appname to link the new entry to
|
|
* @param string $to_id id in $to_app
|
|
* @return array/boolean with name-value pairs for link to add-methode of $app or false if add not supported
|
|
*/
|
|
static function add($app,$to_app='',$to_id='')
|
|
{
|
|
//echo "<p>egw_link::add('$app','$to_app','$to_id') app_register[$app] ="; _debug_array($app_register[$app]);
|
|
if ($app == '' || !is_array($reg = self::$app_register[$app]) || !isset($reg['add']))
|
|
{
|
|
return false;
|
|
}
|
|
$params = $reg['add'];
|
|
|
|
if ($reg['add_app'] && $to_app && $reg['add_id'] && $to_id)
|
|
{
|
|
$params[$reg['add_app']] = $to_app;
|
|
$params[$reg['add_id']] = $to_id;
|
|
}
|
|
return $params;
|
|
}
|
|
|
|
/**
|
|
* view entry $id of $app
|
|
*
|
|
* @param string $app appname
|
|
* @param string $id id in $app
|
|
* @param array $link=null link-data for file-attachments
|
|
* @return array with name-value pairs for link to view-methode of $app to view $id
|
|
*/
|
|
static function view($app,$id,$link=null)
|
|
{
|
|
if ($app == self::VFS_APPNAME && !empty($id) && is_array($link))
|
|
{
|
|
return egw_vfs::download_url(parse_url(self::vfs_path($link['app2'],$link['id2'],$link['id']),PHP_URL_PATH));
|
|
}
|
|
if ($app == '' || !is_array($reg = self::$app_register[$app]) || !isset($reg['view']) || !isset($reg['view_id']))
|
|
{
|
|
return array();
|
|
}
|
|
$view = $reg['view'];
|
|
|
|
$names = explode(':',$reg['view_id']);
|
|
if (count($names) > 1)
|
|
{
|
|
$id = explode(':',$id);
|
|
while (list($n,$name) = each($names))
|
|
{
|
|
$view[$name] = $id[$n];
|
|
}
|
|
}
|
|
else
|
|
{
|
|
$view[$reg['view_id']] = $id;
|
|
}
|
|
return $view;
|
|
}
|
|
|
|
/**
|
|
* Check if $app uses a popup for $action
|
|
*
|
|
* @param string $app app-name
|
|
* @param string $action='view' name of the action, atm. 'view' or 'add'
|
|
* @return boolean/string false if no popup is used or $app is not registered, otherwise string with the prefered popup size (eg. '640x400)
|
|
*/
|
|
static function is_popup($app,$action='view')
|
|
{
|
|
return self::get_registry($app,$action.'_popup');
|
|
}
|
|
|
|
/**
|
|
* Check if $app is in the registry and has an entry for $name
|
|
*
|
|
* @param string $app app-name
|
|
* @param string $name name / key in the registry, eg. 'view'
|
|
* @return boolean/string false if $app is not registered, otherwise string with the value for $name
|
|
*/
|
|
static function get_registry($app,$name)
|
|
{
|
|
$reg = self::$app_register[$app];
|
|
|
|
return isset($reg) ? $reg[$name] : false;
|
|
}
|
|
|
|
/**
|
|
* path to the attached files of $app/$ip or the directory for $app if no $id,$file given
|
|
*
|
|
* All link-files are based in the vfs-subdir '/apps/'.$app
|
|
*
|
|
* @param string $app appname
|
|
* @param string $id='' id in $app
|
|
* @param string $file='' filename
|
|
* @param boolean $just_the_path=false return url or just the vfs path
|
|
* @return string/array path or array with path and relatives, depending on $relatives
|
|
*/
|
|
static function vfs_path($app,$id='',$file='',$just_the_path=false)
|
|
{
|
|
$path = self::VFS_BASEURL;
|
|
|
|
if ($app)
|
|
{
|
|
$path .= '/'.$app;
|
|
|
|
if ($id)
|
|
{
|
|
$path .= '/'.$id;
|
|
|
|
if ($file)
|
|
{
|
|
$path .= '/'.$file;
|
|
}
|
|
}
|
|
}
|
|
if ($just_the_path)
|
|
{
|
|
$path = parse_url($path,PHP_URL_PATH);
|
|
}
|
|
else
|
|
{
|
|
$path = egw_vfs::resolve_url($path);
|
|
}
|
|
//error_log(__METHOD__."($app,$id,$file)=$path");
|
|
return $path;
|
|
}
|
|
|
|
/**
|
|
* Put a file to the corrosponding place in the VFS and set the attributes
|
|
*
|
|
* @param string $app appname to linke the file to
|
|
* @param string $id id in $app
|
|
* @param array $file informations about the file in format of the etemplate file-type
|
|
* $file['name'] name of the file (no directory)
|
|
* $file['type'] mine-type of the file
|
|
* $file['tmp_name'] name of the uploaded file (incl. directory)
|
|
* $file['path'] path of the file on the client computer
|
|
* $file['ip'] of the client (path and ip are only needed if u want a symlink (if possible))
|
|
* @param string $comment='' comment to add to the link
|
|
* @return int negative id of egw_sqlfs table as negative link-id's are for vfs attachments
|
|
*/
|
|
static function attach_file($app,$id,$file,$comment='')
|
|
{
|
|
$entry_dir = self::vfs_path($app,$id);
|
|
if (self::DEBUG)
|
|
{
|
|
echo "<p>attach_file: app='$app', id='$id', tmp_name='$file[tmp_name]', name='$file[name]', size='$file[size]', type='$file[type]', path='$file[path]', ip='$file[ip]', comment='$comment', entry_dir='$entry_dir'</p>\n";
|
|
}
|
|
if (file_exists($entry_dir) || ($Ok = mkdir($entry_dir,0,true)))
|
|
{
|
|
if (($Ok = copy($file['tmp_name'],$fname = egw_vfs::concat($entry_dir,$file['name'])) &&
|
|
($stat = links_stream_wrapper::url_stat($fname,0))) && $comment)
|
|
{
|
|
egw_vfs::proppatch(parse_url($fname,PHP_URL_PATH),array(array('name'=>'comment','val'=>$comment))); // set comment
|
|
}
|
|
}
|
|
else
|
|
{
|
|
error_log(__METHOD__."($app,$id,$file,$comment) Can't mkdir $entry_dir!");
|
|
}
|
|
return $Ok ? -$stat['ino'] : false;
|
|
}
|
|
|
|
/**
|
|
* deletes a single or all attached files of an entry (for all there's no acl check, as the entry probably not exists any more!)
|
|
*
|
|
* @param int/string $app > 0: file_id of an attchemnt or $app/$id entry which linked to
|
|
* @param string $id='' id in app
|
|
* @param string $fname='' filename
|
|
* @return boolean/array false on error ($app or $id not found), array with path as key and boolean result of delete
|
|
*/
|
|
static function delete_attached($app,$id='',$fname='')
|
|
{
|
|
if ((int)$app > 0) // is file_id
|
|
{
|
|
$url = links_stream_wrapper::PREFIX.links_stream_wrapper::id2path($app);
|
|
}
|
|
else
|
|
{
|
|
if (empty($app) || empty($id))
|
|
{
|
|
return False; // dont delete more than all attachments of an entry
|
|
}
|
|
$url = self::vfs_path($app,$id,$fname);
|
|
|
|
if (!$fname || !$id) // we delete the whole entry (or all entries), which probably not exist anymore
|
|
{
|
|
$current_is_root = egw_vfs::$is_root;
|
|
egw_vfs::$is_root = true;
|
|
}
|
|
}
|
|
if (self::DEBUG)
|
|
{
|
|
echo "<p>egw_link::delete_attached('$app','$id','$fname') url=$url</p>\n";
|
|
}
|
|
if (($Ok = egw_vfs::remove($url,true)) && ((int)$app > 0 || $fname))
|
|
{
|
|
// try removing the dir, in case it's empty
|
|
@rmdir(egw_vfs::dirname($url));
|
|
}
|
|
if (!is_null($current_is_root))
|
|
{
|
|
egw_vfs::$is_root = $current_is_root;
|
|
}
|
|
return $Ok;
|
|
}
|
|
|
|
/**
|
|
* converts the infos vfs has about a file into a link
|
|
*
|
|
* @param string $app appname
|
|
* @param string $id id in app
|
|
* @param string $filename filename
|
|
* @return array 'kind' of link-array
|
|
*/
|
|
static function info_attached($app,$id,$filename)
|
|
{
|
|
$url = self::vfs_path($app,$id,$filename);
|
|
if (!($stat = links_stream_wrapper::url_stat($url,STREAM_URL_STAT_QUIET)))
|
|
{
|
|
return false;
|
|
}
|
|
return self::fileinfo2link($stat,$url);
|
|
}
|
|
|
|
/**
|
|
* converts a fileinfo (row in the vfs-db-table) in a link
|
|
*
|
|
* @param array/int $fileinfo a row from the vfs-db-table (eg. returned by the vfs ls static function) or a file_id of that table
|
|
* @return array a 'kind' of link-array
|
|
*/
|
|
static function fileinfo2link($fileinfo,$url=null)
|
|
{
|
|
if (!is_array($fileinfo))
|
|
{
|
|
$url = links_stream_wrapper::id2path($fileinfo);
|
|
if (!($fileinfo = links_stream_wrapper::url_stat($url,STREAM_URL_STAT_QUIET)))
|
|
{
|
|
return false;
|
|
}
|
|
}
|
|
list(,,,,$app,$id) = explode('/',$url); // links://apps/$app/$id
|
|
|
|
return array(
|
|
'app' => self::VFS_APPNAME,
|
|
'id' => $fileinfo['name'],
|
|
'app2' => $app,
|
|
'id2' => $id,
|
|
'remark' => '', // only list_attached currently sets the remark
|
|
'owner' => $fileinfo['uid'],
|
|
'link_id' => -$fileinfo['ino'],
|
|
'lastmod' => $fileinfo['mtime'],
|
|
'size' => $fileinfo['size'],
|
|
'type' => $fileinfo['mime'],
|
|
);
|
|
}
|
|
|
|
/**
|
|
* lists all attachments to $app/$id
|
|
*
|
|
* @param string $app appname
|
|
* @param string $id id in app
|
|
* @return array with link_id => 'kind' of link-array pairs
|
|
*/
|
|
static function list_attached($app,$id)
|
|
{
|
|
$url = self::vfs_path($app,$id);
|
|
//error_log(__METHOD__."($app,$id) url=$url");
|
|
|
|
if (!($extra = self::get_registry($app,'find_extra'))) $extra = array();
|
|
|
|
$attached = array();
|
|
if (($url2stats = egw_vfs::find($url,array('url'=>true,'need_mime'=>true,'type'=>'f')+$extra,true)))
|
|
{
|
|
$props = egw_vfs::propfind(array_keys($url2stats)); // get the comments
|
|
foreach($url2stats as $url => &$fileinfo)
|
|
{
|
|
$link = self::fileinfo2link($fileinfo,$url);
|
|
if (isset($props[$path = parse_url($url,PHP_URL_PATH)]))
|
|
{
|
|
foreach($props[$path] as $prop)
|
|
{
|
|
if ($prop['ns'] == egw_vfs::DEFAULT_PROP_NAMESPACE && $prop['name'] == 'comment')
|
|
{
|
|
$link['remark'] = $prop['val'];
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
$attached[$link['link_id']] = $link;
|
|
$urls[] = $url;
|
|
}
|
|
}
|
|
return $attached;
|
|
}
|
|
|
|
/**
|
|
* reverse static function of htmlspecialchars()
|
|
*
|
|
* @param string $str string to decode
|
|
* @return string decoded string
|
|
*/
|
|
static private function decode_htmlspecialchars($str)
|
|
{
|
|
return str_replace(array('&','"','<','>'),array('&','"','<','>'),$str);
|
|
}
|
|
|
|
/**
|
|
* notify other apps about changed content in $app,$id
|
|
*
|
|
* @param string $app name of app in which the updated happend
|
|
* @param string $id id in $app of the updated entry
|
|
* @param array $data=null updated data of changed entry, as the read-method of the BO-layer would supply it
|
|
*/
|
|
static function notify_update($app,$id,$data=null)
|
|
{
|
|
foreach(self::get_links($app,$id,'!'.self::VFS_APPNAME) as $link_id => $link)
|
|
{
|
|
self::notify('update',$link['app'],$link['id'],$app,$id,$link_id,$data);
|
|
}
|
|
self::delete_cache($app,$id);
|
|
}
|
|
|
|
/**
|
|
* notify an application about a new or deleted links to own entries or updates in the content of the linked entry
|
|
*
|
|
* Please note: not all apps supply update notifications
|
|
*
|
|
* @internal
|
|
* @param string $type 'link' for new links, 'unlink' for unlinked entries, 'update' of content in linked entries
|
|
* @param string $notify_app app to notify
|
|
* @param string $notify_id id in $notify_app
|
|
* @param string $target_app name of app whos entry changed, linked or deleted
|
|
* @param string $target_id id in $target_app
|
|
* @param array $data=null data of entry in app2 (optional)
|
|
*/
|
|
static private function notify($type,$notify_app,$notify_id,$target_app,$target_id,$link_id,$data=null)
|
|
{
|
|
if ($link_id && isset(self::$app_register[$notify_app]) && isset(self::$app_register[$notify_app]['notify']))
|
|
{
|
|
ExecMethod(self::$app_register[$notify_app]['notify'],array(
|
|
'type' => $type,
|
|
'id' => $notify_id,
|
|
'target_app' => $target_app,
|
|
'target_id' => $target_id,
|
|
'link_id' => $link_id,
|
|
'data' => $data,
|
|
));
|
|
}
|
|
}
|
|
|
|
/**
|
|
* notifies about unlinked links
|
|
*
|
|
* @internal
|
|
* @param array &$links unlinked links from the database
|
|
*/
|
|
static private function notify_unlink(&$links)
|
|
{
|
|
foreach($links as $link)
|
|
{
|
|
// we notify both sides of the link, as the unlink command NOT clearly knows which side initiated the unlink
|
|
self::notify('unlink',$link['link_app1'],$link['link_id1'],$link['link_app2'],$link['link_id2'],$link['link_id']);
|
|
self::notify('unlink',$link['link_app2'],$link['link_id2'],$link['link_app1'],$link['link_id1'],$link['link_id']);
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Get a reference to the cached value for $app/$id for $type
|
|
*
|
|
* @param string $app
|
|
* @param string|int $id
|
|
* @param string $type='title' 'title' or 'file_access'
|
|
* @return int|string can be null, if cache not yet set
|
|
*/
|
|
private static function &get_cache($app,$id,$type = 'title')
|
|
{
|
|
switch($type)
|
|
{
|
|
case 'title':
|
|
return self::$title_cache[$app.':'.$id];
|
|
case 'file_access':
|
|
return self::$file_access_cache[$app.':'.$id];
|
|
default:
|
|
throw new egw_exception_wrong_parameter("Unknown type '$type'!");
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Set title and optional file_access cache for $app,$id
|
|
*
|
|
* Allows applications to set values for title and file access, eg. in their search method,
|
|
* to not be called again. This offloads the need to cache from the app to the link class.
|
|
* If there's no caching, items get read multiple times from the database!
|
|
*
|
|
* @param string $app
|
|
* @param int|string $id
|
|
* @param string $title title string or null
|
|
* @param int $file_access=null EGW_ACL_READ, EGW_ACL_EDIT or both or'ed together
|
|
*/
|
|
public static function set_cache($app,$id,$title,$file_access=null)
|
|
{
|
|
//error_log(__METHOD__."($app,$id,$title,$file_access)");
|
|
if (!is_null($file_access))
|
|
{
|
|
$cache =& self::get_cache($app,$id);
|
|
$cache = $title;
|
|
}
|
|
if (!is_null($file_access))
|
|
{
|
|
$cache =& self::get_cache($app,$id,'file_access');
|
|
$cache = $file_access;
|
|
}
|
|
}
|
|
|
|
/**
|
|
* Delete the diverse caches for $app/$id
|
|
*
|
|
* @param string $app
|
|
* @param int|string $id
|
|
*/
|
|
private static function delete_cache($app,$id)
|
|
{
|
|
unset(self::$title_cache[$app.':'.$id]);
|
|
unset(self::$file_access_cache[$app.':'.$id]);
|
|
}
|
|
|
|
/**
|
|
* Check the file access perms for $app/id
|
|
*
|
|
* @ToDo $rel_path is not yet implemented, as no app use it currently
|
|
* @param string $app
|
|
* @param string|int $id id of entry
|
|
* @param int $required=EGW_ACL_READ EGW_ACL_{READ|EDIT}
|
|
* @param string $rel_path
|
|
* @return boolean
|
|
*/
|
|
static function file_access($app,$id,$required=EGW_ACL_READ,$rel_path=null)
|
|
{
|
|
$cache =& self::get_cache($app,$id,'file_access');
|
|
|
|
if (!isset($cache) || $required == EGW_ACL_EDIT && !($cache & $required))
|
|
{
|
|
if(($method = self::get_registry($app,'file_access')))
|
|
{
|
|
$cache |= ExecMethod2($method,$id,$required,$rel_path) ? $required : 0;
|
|
}
|
|
else
|
|
{
|
|
$cache |= self::title($app,$id) ? EGW_ACL_READ|EGW_ACL_EDIT : 0;
|
|
}
|
|
//error_log(__METHOD__."($app,$id,$required,$rel_path) got $cache --> ".($cache & $required ? 'true' : 'false'));
|
|
}
|
|
//else error_log(__METHOD__."($app,$id,$required,$rel_path) using cached value $cache --> ".($cache & $required ? 'true' : 'false'));
|
|
return !!($cache & $required);
|
|
}
|
|
}
|
|
egw_link::init_static(); |