forked from extern/egroupware
a8c9eebf52
WebDAV RFC 4918 allows a full url or a path as <D:href>:
http://www.webdav.org/specs/rfc4918.html#ELEMENT_href
Some clients can NOT deal with one or the other:
- KAddressbook (at least in 3.5) can NOT subscribe to addressbooks (it
does not find them) if just a path is used
- iCal in OS X 10.6 generates wrong requests, if a full url is used
662 lines
18 KiB
PHP
662 lines
18 KiB
PHP
<?php
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/**
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* eGroupWare: GroupDAV access
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*
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* Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
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*
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* @link http://www.egroupware.org
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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 groupdav
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2007/8 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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require_once('HTTP/WebDAV/Server.php');
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/**
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* eGroupWare: GroupDAV access
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*
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* Using the PEAR HTTP/WebDAV/Server class (which need to be installed!)
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*
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* @link http://www.groupdav.org GroupDAV spec
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*/
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class groupdav extends HTTP_WebDAV_Server
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{
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/**
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* GroupDAV namespace
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*/
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const GROUPDAV = 'http://groupdav.org/';
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/**
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* CalDAV namespace
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*/
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const CALDAV = 'urn:ietf:params:xml:ns:caldav';
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/**
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* CardDAV namespace
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*/
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const CARDDAV = 'urn:ietf:params:xml:ns:carddav';
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/**
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* Realm and powered by string
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*/
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const REALM = 'eGroupWare CalDAV/CardDAV/GroupDAV server';
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var $dav_powered_by = self::REALM;
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var $http_auth_realm = self::REALM;
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var $root = array(
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'calendar' => array(
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'resourcetype' => array(self::GROUPDAV => 'vevent-collection', self::CALDAV => 'calendar'),
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'component-set' => array(self::GROUPDAV => 'VEVENT'),
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),
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'addressbook' => array(
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'resourcetype' => array(self::GROUPDAV => 'vcard-collection', self::CARDDAV => 'addressbook'),
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'component-set' => array(self::GROUPDAV => 'VCARD'),
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),
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'infolog' => array(
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'resourcetype' => array(self::GROUPDAV => 'vtodo-collection'),
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'component-set' => array(self::GROUPDAV => 'VTODO'),
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),
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);
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/**
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* Debug level: 0 = nothing, 1 = function calls, 2 = more info, 3 = complete $_SERVER array
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*
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* The debug messages are send to the apache error_log
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*
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* @var integer
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*/
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var $debug = 0;
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/**
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* eGW's charset
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*
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* @var string
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*/
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var $egw_charset;
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/**
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* Reference to the translation class
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*
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* @var translation
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*/
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var $translation;
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/**
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* Instance of our application specific handler
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*
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* @var groupdav_handler
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*/
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var $handler;
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function __construct()
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{
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if ($this->debug > 2) error_log('groupdav: $_SERVER='.array2string($_SERVER));
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// identify clients, which do NOT support path AND full url in <D:href> of PROPFIND request
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switch(groupdav_handler::get_agent())
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{
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case 'kde': // KAddressbook (at least in 3.5 can NOT subscribe / does NOT find addressbook)
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$this->client_require_href_as_url = true;
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break;
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case 'davkit': // iCal app in OS X 10.6 created wrong request, if full url given
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$this->client_require_href_as_url = false;
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break;
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}
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parent::HTTP_WebDAV_Server();
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$this->translation =& $GLOBALS['egw']->translation;
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$this->egw_charset = $this->translation->charset();
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}
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/**
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* get the handler for $app
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*
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* @param string $app
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* @return groupdav_handler
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*/
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function app_handler($app)
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{
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return groupdav_handler::app_handler($app,$this->debug,$this->base_uri);
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}
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/**
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* OPTIONS request, allow to modify the standard responses from the pear-class
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*
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* @param string $path
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* @param array &$dav
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* @param array &$allow
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*/
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function OPTIONS($path, &$dav, &$allow)
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{
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list(,$app) = explode('/',$path);
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switch($app)
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{
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case 'calendar':
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$dav[] = 'calendar-access';
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break;
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case 'addressbook':
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$dav[] = 'addressbook';
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break;
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}
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// not yet implemented: $dav[] = 'access-control';
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}
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/**
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* PROPFIND and REPORT method handler
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*
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* @param array general parameter passing array
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* @param array return array for file properties
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* @return bool true on success
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*/
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function PROPFIND(&$options, &$files,$method='PROPFIND')
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{
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if ($this->debug) error_log(__CLASS__."::$method(".array2string($options,true).')');
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// parse path in form [/account_lid]/app[/more]
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if (!self::_parse_path($options['path'],$id,$app,$user) && $app && !$user)
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{
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if ($this->debug > 1) error_log(__CLASS__."::$method: user=$user, app=$app, id=$id: 404 not found!");
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return '404 Not Found';
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}
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if ($this->debug > 1) error_log(__CLASS__."::$method: user=$user, app='$app', id=$id");
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$files = array('files' => array());
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if (!$app) // root folder containing apps
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{
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// self url
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$files['files'][] = array(
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'path' => '/',
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'props' => array(
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self::mkprop('displayname','EGroupware (Cal|Card|Group)DAV server'),
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self::mkprop('resourcetype','collection'),
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// adding the calendar extra property (calendar-home-set, etc.) here, allows apple iCal to "autodetect" the URL
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self::mkprop(groupdav::CALDAV,'calendar-home-set',$this->base_uri.'/calendar/'),
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),
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);
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if ($options['depth'])
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{
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// principals collection
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$files['files'][] = array(
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'path' => '/principals/',
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'props' => array(
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self::mkprop('displayname',lang('Accounts')),
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self::mkprop('resourcetype','collection'),
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),
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);
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// groups collection
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$files['files'][] = array(
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'path' => '/groups/',
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'props' => array(
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self::mkprop('displayname',lang('Groups')),
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self::mkprop('resourcetype','collection'),
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),
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);
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foreach($this->root as $app => $data)
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{
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if (!$GLOBALS['egw_info']['user']['apps'][$app]) continue; // no rights for the given app
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$files['files'][] = array(
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'path' => '/'.$app.'/',
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'props' => $this->_properties($app),
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);
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}
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}
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return true;
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}
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if (!in_array($app,array('principals','groups')) && !$GLOBALS['egw_info']['user']['apps'][$app])
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{
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if ($this->debug) error_log(__CLASS__."::$method(path=$options[path]) 403 Forbidden: no app rights for '$app'");
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return "403 Forbidden: no app rights for '$app'"; // no rights for the given app
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}
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if (($handler = self::app_handler($app)))
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{
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if ($method != 'REPORT' && !$id) // no self URL for REPORT requests (only PROPFIND) or propfinds on an id
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{
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$files['files'][] = array(
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'path' => '/'.$app.'/',
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// KAddressbook doubles the folder, if the self URL contains the GroupDAV/CalDAV resourcetypes
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'props' => $this->_properties($app,$app=='addressbook'&&strpos($_SERVER['HTTP_USER_AGENT'],'KHTML') !== false),
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);
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}
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if (!$options['depth'] && !$id)
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{
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return true; // depth 0 --> show only the self url
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}
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return $handler->propfind($options['path'],$options,$files,$user,$id);
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}
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return '501 Not Implemented';
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}
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/**
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* Get the properties of a collection
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*
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* @param string $app
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* @param boolean $no_extra_types=false should the GroupDAV and CalDAV types be added (KAddressbook has problems with it in self URL)
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* @return array of DAV properties
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*/
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function _properties($app,$no_extra_types=false)
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{
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$props = array(
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self::mkprop('displayname',$this->translation->convert(lang($app),$this->egw_charset,'utf-8')),
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);
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foreach($this->root[$app] as $prop => $values)
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{
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if ($prop == 'resourcetype')
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{
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$resourcetype = array(
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self::mkprop('collection','collection'),
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);
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if (!$no_extra_types)
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{
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foreach($this->root[$app]['resourcetype'] as $ns => $type)
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{
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$resourcetype[] = self::mkprop($ns,'resourcetype', $type);
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}
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}
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$props[] = self::mkprop('resourcetype',$resourcetype);
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}
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else
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{
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foreach($values as $ns => $value)
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{
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$props[] = self::mkprop($ns,$prop,$value);
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}
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}
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}
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if (method_exists($app.'_groupdav','extra_properties'))
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{
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$props = ExecMethod($app.'_groupdav::extra_properties',$props);
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}
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return $props;
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}
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/**
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* CalDAV/CardDAV REPORT method handler
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*
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* just calls PROPFIND()
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*
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* @param array general parameter passing array
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* @param array return array for file properties
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* @return bool true on success
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*/
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function REPORT(&$options, &$files)
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{
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if ($this->debug > 1) error_log(__METHOD__.'('.array2string($options).')');
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return $this->PROPFIND($options,$files,'REPORT');
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}
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/**
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* CalDAV/CardDAV REPORT method handler to get HTTP_WebDAV_Server to process REPORT requests
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*
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* Just calls http_PROPFIND()
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*/
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function http_REPORT()
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{
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parent::http_PROPFIND('REPORT');
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}
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/**
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* GET method handler
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*
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* @param array $options parameter passing array
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* @return bool true on success
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*/
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function GET(&$options)
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{
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if ($this->debug) error_log(__METHOD__.'('.array2string($options).')');
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if (!$this->_parse_path($options['path'],$id,$app,$user))
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{
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return $this->autoindex($options);
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error_log(__METHOD__."(".array2string($options).") 404 Not Found");
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return '404 Not Found';
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}
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if (($handler = self::app_handler($app)))
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{
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return $handler->get($options,$id);
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}
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error_log(__METHOD__."(".array2string($options).") 501 Not Implemented");
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return '501 Not Implemented';
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}
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/**
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* Display an automatic index (listing and properties) for a collection
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*
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* @param array $options parameter passing array, index "path" contains requested path
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*/
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protected function autoindex($options)
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{
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$propfind_options = array(
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'path' => $options['path'],
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'depth' => 1,
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);
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$files = array();
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if (($ret = $this->PROPFIND($propfind_options,$files)) !== true)
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{
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return $ret; // no collection
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}
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header('Content-type: text/html; charset='.$GLOBALS['egw']->translation->charset());
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echo "<html>\n<head>\n\t<title>".'EGroupware (Cal|Card|Group)DAV server '.htmlspecialchars($options['path'])."</title>\n";
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echo "\t<meta http-equiv='content-type' content='text/html; charset=utf-8' />\n";
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echo "\t<style type='text/css'>\n.th { background-color: #e0e0e0; }\n.row_on { background-color: #F1F1F1; }\n".
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".row_off { background-color: #ffffff; }\ntd { padding-left: 5px; }\nth { padding-left: 5px; text-align: left; }\n\t</style>\n";
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echo "</head>\n<body>\n";
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echo '<h1>(Cal|Card|Group)DAV ';
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$path = '/groupdav.php';
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foreach(explode('/',substr($options['path'],0,-1)) as $n => $name)
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{
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$path .= ($n != 1 ? '/' : '').$name;
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echo html::a_href(htmlspecialchars($name.'/'),$path.($n ? '/' : ''));
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}
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echo "</h1>\n";
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$collection_props = self::props2array($files['files'][0]['props']);
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echo '<h3>'.lang('Collection listing').': '.htmlspecialchars($collection_props['DAV:displayname'])."</h3>\n";
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//_debug_array($files['files']);
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if (count($files['files']) <= 1)
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{
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echo '<p>'.lang('Collection empty.')."</p>\n";
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}
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else
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{
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echo "<table>\n\t<tr class='th'><th>".lang('Name')."</th><th>".lang('Size')."</th><th>".lang('Last modified')."</th><th>".
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lang('ETag')."</th><th>".lang('Content type')."</th><th>".lang('Resource type')."</th></tr>\n";
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foreach($files['files'] as $n => $file)
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{
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if (!$n) continue; // own entry --> displaying properies later
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$props = self::props2array($file['props']);
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//echo $file['path']; _debug_array($props);
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$class = $class == 'row_on' ? 'row_off' : 'row_on';
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if (substr($file['path'],-1) == '/')
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{
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$name = basename(substr($file['path'],0,-1)).'/';
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}
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else
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{
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$name = basename($file['path']);
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}
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echo "\t<tr class='$class'>\n\t\t<td>".html::a_href(htmlspecialchars($name),'/groupdav.php'.$file['path'])."</td>\n";
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echo "\t\t<td>".$props['DAV:getcontentlength']."</td>\n";
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echo "\t\t<td>".(!empty($props['DAV:getlastmodified']) ? date('Y-m-d H:i:s',$props['DAV:getlastmodified']) : '')."</td>\n";
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echo "\t\t<td>".$props['DAV:getetag']."</td>\n";
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echo "\t\t<td>".htmlspecialchars($props['DAV:getcontenttype'])."</td>\n";
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echo "\t\t<td>".self::prop_value($props['DAV:resourcetype'])."</td>\n\t</tr>\n";
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}
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echo "</table>\n";
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}
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echo '<h3>'.lang('Properties')."</h3>\n";
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echo "<table>\n\t<tr class='th'><th>".lang('Namespace')."</th><th>".lang('Name')."</th><th>".lang('Value')."</th></tr>\n";
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foreach($collection_props as $name => $value)
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{
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$class = $class == 'row_on' ? 'row_off' : 'row_on';
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$ns = explode(':',$name);
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$name = array_pop($ns);
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$ns = implode(':',$ns);
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echo "\t<tr class='$class'>\n\t\t<td>".htmlspecialchars($ns)."</td><td>".htmlspecialchars($name)."</td>\n";
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echo "\t\t<td>".self::prop_value($value)."</td>\n\t</tr>\n";
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}
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echo "</table>\n";
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echo "</body>\n</html>\n";
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common::egw_exit();
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}
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/**
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* Format a property value for output
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*
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* @param mixed $value
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* @return string
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*/
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protected static function prop_value($value)
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{
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if (is_array($value))
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{
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if (isset($value[0]['ns']))
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{
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$value = self::props2array($value);
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}
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$value = htmlspecialchars(array2string($value));
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}
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elseif (preg_match('/^https?:\/\//',$value))
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{
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$value = html::a_href($value,$value);
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}
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else
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{
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$value = htmlspecialchars($value);
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}
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return $value;
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}
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/**
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* Return numeric indexed array with values for keys 'ns', 'name' and 'val' as array 'ns:name' => 'val'
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*
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* @param array $props
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* @return array
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*/
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protected static function props2array(array $props)
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{
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$arr = array();
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foreach($props as $prop)
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{
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switch($prop['ns'])
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{
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case 'DAV:';
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$ns = 'DAV';
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break;
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case self::CALDAV:
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$ns = 'CalDAV';
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break;
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case self::CARDDAV:
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$ns = 'CardDAV';
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break;
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case self::GROUPDAV:
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$ns = 'GroupDAV';
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break;
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default:
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$ns = $prop['ns'];
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}
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$arr[$ns.':'.$prop['name']] = $prop['val'];
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}
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return $arr;
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}
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/**
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* PUT method handler
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*
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* @param array parameter passing array
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* @return bool true on success
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*/
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function PUT(&$options)
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{
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// read the content in a string, if a stream is given
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if (isset($options['stream']))
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{
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$options['content'] = '';
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while(!feof($options['stream']))
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{
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$options['content'] .= fread($options['stream'],8192);
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}
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}
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if ($this->debug) error_log(__METHOD__.'('.array2string($options).')');
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if (!$this->_parse_path($options['path'],$id,$app,$user))
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{
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return '404 Not Found';
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}
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if (($handler = self::app_handler($app)))
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{
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$status = $handler->put($options,$id,$user);
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// set default stati: true --> 204 No Content, false --> should be already handled
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if (is_bool($status)) $status = $status ? '204 No Content' : '400 Something went wrong';
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return $status;
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}
|
|
return '501 Not Implemented';
|
|
}
|
|
|
|
/**
|
|
* DELETE method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function DELETE($options)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__.'('.array2string($options).')');
|
|
|
|
if (!$this->_parse_path($options['path'],$id,$app,$user))
|
|
{
|
|
return '404 Not Found';
|
|
}
|
|
if (($handler = self::app_handler($app)))
|
|
{
|
|
$status = $handler->delete($options,$id);
|
|
// set default stati: true --> 204 No Content, false --> should be already handled
|
|
if (is_bool($status)) $status = $status ? '204 No Content' : '400 Something went wrong';
|
|
return $status;
|
|
}
|
|
return '501 Not Implemented';
|
|
}
|
|
|
|
/**
|
|
* MKCOL method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function MKCOL($options)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__.'('.array2string($options).')');
|
|
|
|
return '501 Not Implemented';
|
|
}
|
|
|
|
/**
|
|
* MOVE method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function MOVE($options)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__.'('.array2string($options).')');
|
|
|
|
return '501 Not Implemented';
|
|
}
|
|
|
|
/**
|
|
* COPY method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function COPY($options, $del=false)
|
|
{
|
|
if ($this->debug) error_log('groupdav::'.($del ? 'MOVE' : 'COPY').'('.array2string($options).')');
|
|
|
|
return '501 Not Implemented';
|
|
}
|
|
|
|
/**
|
|
* LOCK method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function LOCK(&$options)
|
|
{
|
|
self::_parse_path($options['path'],$id,$app,$user);
|
|
$path = egw_vfs::app_entry_lock_path($app,$id);
|
|
|
|
if ($this->debug) error_log(__METHOD__.'('.array2string($options).") path=$path");
|
|
|
|
// get the app handler, to check if the user has edit access to the entry (required to make locks)
|
|
$handler = self::app_handler($app);
|
|
|
|
// TODO recursive locks on directories not supported yet
|
|
if (!$id || !empty($options['depth']) || !$handler->check_access(EGW_ACL_EDIT,$id))
|
|
{
|
|
return '409 Conflict';
|
|
}
|
|
$options['timeout'] = time()+300; // 5min. hardcoded
|
|
|
|
// dont know why, but HTTP_WebDAV_Server passes the owner in D:href tags, which get's passed unchanged to checkLock/PROPFIND
|
|
// that's wrong according to the standard and cadaver does not show it on discover --> strip_tags removes eventual tags
|
|
if (($ret = egw_vfs::lock($path,$options['locktoken'],$options['timeout'],strip_tags($options['owner']),
|
|
$options['scope'],$options['type'],isset($options['update']),false)) && !isset($options['update'])) // false = no ACL check
|
|
{
|
|
return $ret ? '200 OK' : '409 Conflict';
|
|
}
|
|
return $ret;
|
|
}
|
|
|
|
/**
|
|
* UNLOCK method handler
|
|
*
|
|
* @param array general parameter passing array
|
|
* @return bool true on success
|
|
*/
|
|
function UNLOCK(&$options)
|
|
{
|
|
self::_parse_path($options['path'],$id,$app,$user);
|
|
$path = egw_vfs::app_entry_lock_path($app,$id);
|
|
|
|
if ($this->debug) error_log(__METHOD__.'('.array2string($options).") path=$path");
|
|
return egw_vfs::unlock($path,$options['token']) ? '204 No Content' : '409 Conflict';
|
|
}
|
|
|
|
/**
|
|
* checkLock() helper
|
|
*
|
|
* @param string resource path to check for locks
|
|
* @return bool true on success
|
|
*/
|
|
function checkLock($path)
|
|
{
|
|
self::_parse_path($path,$id,$app,$user);
|
|
$path = egw_vfs::app_entry_lock_path($app,$id);
|
|
|
|
return egw_vfs::checkLock($path);
|
|
}
|
|
|
|
/**
|
|
* Parse a path into it's id, app and user parts
|
|
*
|
|
* @param string $path
|
|
* @param int &$id
|
|
* @param string &$app addressbook, calendar, infolog (=infolog)
|
|
* @param int &$user
|
|
* @return boolean true on success, false on error
|
|
*/
|
|
function _parse_path($path,&$id,&$app,&$user)
|
|
{
|
|
if ($this->debug) error_log(__METHOD__." called with ('$path') id=$id, app='$app', user=$user");
|
|
$parts = explode('/',$path);
|
|
list($id) = explode('.',array_pop($parts)); // remove evtl. .ics extension
|
|
|
|
$app = array_pop($parts);
|
|
|
|
if (($user = array_pop($parts)))
|
|
{
|
|
$user = $GLOBALS['egw']->accounts->name2id($user,'account_lid',$app != 'addressbook' ? 'u' : null);
|
|
}
|
|
else
|
|
{
|
|
$user = $GLOBALS['egw_info']['user']['account_id'];
|
|
}
|
|
if (!($ok = $id && in_array($app,array('addressbook','calendar','infolog','principals','groups')) && $user))
|
|
{
|
|
if ($this->debug) error_log(__METHOD__."('$path') returning false: id=$id, app='$app', user=$user");
|
|
}
|
|
return $ok;
|
|
}
|
|
}
|