mirror of
https://github.com/EGroupware/egroupware.git
synced 2024-11-15 04:24:41 +01:00
626 lines
19 KiB
PHP
626 lines
19 KiB
PHP
<?php
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/**
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* EGroupware: GroupDAV access: infolog handler
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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 infolog
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* @subpackage groupdav
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* @author Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @copyright (c) 2007-11 by Ralf Becker <RalfBecker-AT-outdoor-training.de>
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* @version $Id$
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*/
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require_once EGW_SERVER_ROOT.'/phpgwapi/inc/horde/lib/core.php';
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/**
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* EGroupware: GroupDAV access: infolog handler
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*/
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class infolog_groupdav extends groupdav_handler
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{
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/**
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* bo class of the application
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*
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* @var infolog_bo
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*/
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var $bo;
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/**
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* vCalendar Instance for parsing
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*
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* @var array
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*/
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var $vCalendar;
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var $filter_prop2infolog = array(
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'SUMMARY' => 'info_subject',
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'UID' => 'info_uid',
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'DTSTART' => 'info_startdate',
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'DUE' => 'info_enddate',
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'DESCRIPTION' => 'info_des',
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'STATUS' => 'info_status',
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'PRIORITY' => 'info_priority',
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'LOCATION' => 'info_location',
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'COMPLETED' => 'info_datecompleted',
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'CREATED' => 'info_created',
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);
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/**
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* Are we using info_id, info_uid or caldav_name for the path/url
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*
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* Get's set in constructor to 'caldav_name' and groupdav_handler::$path_extension = ''!
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*/
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static $path_attr = 'info_id';
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/**
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* Constructor
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*
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* @param string $app 'calendar', 'addressbook' or 'infolog'
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* @param groupdav $groupdav calling class
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*/
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function __construct($app, groupdav $groupdav)
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{
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parent::__construct($app, $groupdav);
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$this->bo = new infolog_bo();
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$this->vCalendar = new Horde_iCalendar;
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// since 1.9.002 we allow clients to specify the URL when creating a new event, as specified by CalDAV
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if (version_compare($GLOBALS['egw_info']['apps']['calendar']['version'], '1.9.002', '>='))
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{
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self::$path_attr = 'caldav_name';
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groupdav_handler::$path_extension = '';
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}
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}
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/**
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* Create the path for an event
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*
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* @param array|int $info
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* @return string
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*/
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function get_path($info)
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{
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if (is_numeric($info) && self::$path_attr == 'info_id')
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{
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$name = $info;
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}
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else
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{
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if (!is_array($info)) $info = $this->bo->read($info);
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$name = $info[self::$path_attr];
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}
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return $name.groupdav_handler::$path_extension;
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}
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/**
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* Get filter-array for infolog_bo::search used by getctag and propfind
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*
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* @param string $path
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* @param int $user account_id
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* @return array
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*/
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private function get_infolog_filter($path, $user)
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{
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if (!($infolog_types = $GLOBALS['egw_info']['user']['preferences']['activesync']['infolog-types']))
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{
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$infolog_types = 'task';
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}
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$myself = ($user == $GLOBALS['egw_info']['user']['account_id']);
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if ($path == '/infolog/')
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{
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$task_filter= 'own';
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}
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else
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{
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if ($myself)
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{
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$task_filter = 'open';
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}
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else
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{
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$task_filter = 'open-user' . $user;
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}
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}
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return array(
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'filter' => $task_filter,
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'info_type' => explode(',', $infolog_types),
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);
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}
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/**
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* Handle propfind in the infolog folder
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*
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* @param string $path
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* @param array $options
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* @param array &$files
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* @param int $user account_id
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* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
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*/
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function propfind($path,$options,&$files,$user,$id='')
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{
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// todo add a filter to limit how far back entries from the past get synced
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$filter = $this->get_infolog_filter($path, $user);
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// process REPORT filters or multiget href's
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if (($id || $options['root']['name'] != 'propfind') && !$this->_report_filters($options,$filter,$id))
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{
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// return empty collection, as iCal under iOS 5 had problems with returning "404 Not found" status
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// when trying to request not supported components, eg. VTODO on a calendar collection
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return true;
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}
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// enable time-range filter for tests via propfind / autoindex
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//$filter[] = $sql = $this->_time_range_filter(array('end' => '20001231T000000Z'));
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if ($id) $path = dirname($path).'/'; // caldav_name get's added anyway in the callback
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if ($this->debug > 1)
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{
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error_log(__METHOD__."($path,,,$user,$id) filter=".
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array2string($filter));
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}
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// check if we have to return the full calendar data or just the etag's
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if (!($filter['calendar_data'] = $options['props'] == 'all' &&
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$options['root']['ns'] == groupdav::CALDAV) && is_array($options['props']))
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{
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foreach($options['props'] as $prop)
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{
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if ($prop['name'] == 'calendar-data')
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{
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$filter['calendar_data'] = true;
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break;
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}
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}
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}
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// return iterator, calling ourself to return result in chunks
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$files['files'] = new groupdav_propfind_iterator($this,$path,$filter,$files['files']);
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return true;
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}
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/**
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* Callback for profind interator
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*
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* @param string $path
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* @param array $filter
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* @param array|boolean $start=false false=return all or array(start,num)
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* @return array with "files" array with values for keys path and props
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*/
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function &propfind_callback($path,array $filter,$start=false)
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{
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if ($this->debug) $starttime = microtime(true);
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if (($calendar_data = $filter['calendar_data']))
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{
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$handler = self::_get_handler();
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}
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unset($filter['calendar_data']);
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$task_filter = $filter['filter'];
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unset($filter['filter']);
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$query = array(
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'order' => 'info_datemodified',
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'sort' => 'DESC',
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'filter' => $task_filter,
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'date_format' => 'server',
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'col_filter' => $filter,
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);
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if (!$calendar_data)
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{
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$query['cols'] = array('info_id', 'info_datemodified', 'info_uid', 'caldav_name');
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}
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if (is_array($start))
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{
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$query['start'] = $offset = $start[0];
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$query['num_rows'] = $start[1];
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}
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else
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{
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$offset = 0;
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}
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$files = array();
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// ToDo: add parameter to only return id & etag
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$tasks =& $this->bo->search($query);
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if ($tasks && $offset == $query['start'])
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{
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foreach($tasks as $task)
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{
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$props = array(
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'getcontenttype' => $this->agent != 'kde' ? 'text/calendar; charset=utf-8; component=VTODO' : 'text/calendar', // Konqueror (3.5) dont understand it otherwise
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'getlastmodified' => $task['info_datemodified'],
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);
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if ($calendar_data)
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{
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$content = $handler->exportVTODO($task, '2.0', null); // no METHOD:PUBLISH for CalDAV
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$props['getcontentlength'] = bytes($content);
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$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-data',$content);
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}
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$files[] = $this->add_resource($path, $task, $props);
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}
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}
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if ($this->debug) error_log(__METHOD__."($path) took ".(microtime(true) - $starttime).' to return '.count($files).' items');
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return $files;
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}
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/**
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* Process the filters from the CalDAV REPORT request
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*
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* @param array $options
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* @param array &$cal_filters
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* @param string $id
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* @return boolean true if filter could be processed, false for requesting not here supported VTODO items
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*/
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function _report_filters($options,&$cal_filters,$id)
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{
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if ($options['filters'])
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{
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$cal_filters_in = $cal_filters; // remember filter, to be able to reset standard open-filter, if client sets own filters
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foreach($options['filters'] as $filter)
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{
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switch($filter['name'])
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{
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case 'comp-filter':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) comp-filter='{$filter['attrs']['name']}'");
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switch($filter['attrs']['name'])
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{
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case 'VTODO':
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case 'VCALENDAR':
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break;
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default:
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return false;
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}
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break;
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case 'prop-filter':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) prop-filter='{$filter['attrs']['name']}'");
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$prop_filter = $filter['attrs']['name'];
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break;
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case 'text-match':
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if ($this->debug > 1) error_log(__METHOD__."($options[path],...) text-match: $prop_filter='{$filter['data']}'");
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if (!isset($this->filter_prop2infolog[strtoupper($prop_filter)]))
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{
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if ($this->debug) error_log(__METHOD__."($options[path],".array2string($options).",...) unknown property '$prop_filter' --> ignored");
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}
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else
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{
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$cal_filters[$this->filter_prop2infolog[strtoupper($prop_filter)]] = $filter['data'];
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}
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unset($prop_filter);
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break;
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case 'param-filter':
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if ($this->debug) error_log(__METHOD__."($options[path],...) param-filter='{$filter['attrs']['name']}' not (yet) implemented!");
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break;
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case 'time-range':
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$cal_filters[] = $this->_time_range_filter($filter['attrs']);
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break;
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default:
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if ($this->debug) error_log(__METHOD__."($options[path],".array2string($options).",...) unknown filter --> ignored");
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break;
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}
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}
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// if client set an own filter, reset the open-standard filter
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if ($cal_filters != $cal_filters_in)
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{
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$cal_filters['filter'] = str_replace(array('open', 'open-user'), array('own', 'user'), $cal_filters['filter']);
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}
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}
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// multiget or propfind on a given id
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//error_log(__FILE__ . __METHOD__ . "multiget of propfind:");
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if ($options['root']['name'] == 'calendar-multiget' || $id)
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{
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$ids = array();
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if ($id)
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{
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$cal_filters[self::$path_attr] = groupdav_handler::$path_extension ?
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basename($id,groupdav_handler::$path_extension) : $id;
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}
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else // fetch all given url's
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{
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foreach($options['other'] as $option)
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{
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if ($option['name'] == 'href')
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{
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$parts = explode('/',$option['data']);
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if (($id = basename(array_pop($parts))))
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{
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$cal_filters[self::$path_attr][] = groupdav_handler::$path_extension ?
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basename($id,groupdav_handler::$path_extension) : $id;
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}
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}
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}
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}
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if ($this->debug > 1) error_log(__METHOD__ ."($options[path],...,$id) calendar-multiget: ids=".implode(',',$ids));
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}
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return true;
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}
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/**
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* Create SQL filter from time-range filter attributes
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*
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* CalDAV time-range for VTODO checks DTSTART, DTEND, DUE, CREATED and allways includes tasks if none given
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* @see http://tools.ietf.org/html/rfc4791#section-9.9
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*
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* @param array $attrs values for keys 'start' and/or 'end', at least one is required by CalDAV rfc!
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* @return string with sql
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*/
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private function _time_range_filter(array $attrs)
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{
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$to_or = $to_and = array();
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if (!empty($attrs['start']))
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{
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$start = (int)$this->vCalendar->_parseDateTime($attrs['start']);
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}
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if (!empty($attrs['end']))
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{
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$end = (int)$this->vCalendar->_parseDateTime($attrs['end']);
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}
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elseif (empty($attrs['start']))
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{
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error_log(__METHOD__.'('.array2string($attrs).') minimum one of start or end is required!');
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return '1'; // to not give sql error, but simply not filter out anything
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}
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// we dont need to care for DURATION line in rfc4791#section-9.9, as we always put that in DUE/info_enddate
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// we have start- and/or enddate
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if (isset($start))
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{
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$to_and[] = "($start < info_enddate OR $start <= info_startdate)";
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}
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if (isset($end))
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{
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$to_and[] = "(info_startdate < $end OR info_enddate <= $end)";
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}
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$to_or[] = '('.implode(' AND ', $to_and).')';
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/* either start or enddate is already included in the above, because of OR!
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// only a startdate, no enddate
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$to_or[] = "NOT info_enddate > 0".($start ? " AND $start <= info_startdate" : '').
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($end ? " AND info_startdate < $end" : '');
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// only an enddate, no startdate
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$to_or[] = "NOT info_startdate > 0".($start ? " AND $start < info_enddate" : '').
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($end ? " AND info_enddate <= $end" : '');*/
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// no startdate AND no enddate (2. half of rfc4791#section-9.9) --> use created and due dates instead
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$to_or[] = 'NOT info_startdate > 0 AND NOT info_enddate > 0 AND ('.
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// we have a completed date
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"info_datecompleted > 0".(isset($start) ? " AND ($start <= info_datecompleted OR $start <= info_created)" : '').
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(isset($end) ? " AND (info_datecompleted <= $end OR info_created <= $end)" : '').' OR '.
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// we have no completed date, but always a created date
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"NOT info_datecompleted > 0". (isset($end) ? " AND info_created < $end" : '').
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')';
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$sql = '('.implode(' OR ', $to_or).')';
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if ($this->debug > 1) error_log(__FILE__ . __METHOD__.'('.array2string($attrs).") time-range={$filter['attrs']['start']}-{$filter['attrs']['end']} --> $sql");
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return $sql;
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}
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/**
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* Handle get request for a task / infolog entry
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*
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* @param array &$options
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* @param int $id
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* @param int $user=null account_id
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* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
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*/
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function get(&$options,$id,$user=null)
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{
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if (!is_array($task = $this->_common_get_put_delete('GET',$options,$id)))
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{
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return $task;
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}
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$handler = $this->_get_handler();
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$options['data'] = $handler->exportVTODO($task, '2.0', null); // no METHOD:PUBLISH for CalDAV
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$options['mimetype'] = 'text/calendar; charset=utf-8';
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header('Content-Encoding: identity');
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header('ETag: "'.$this->get_etag($task).'"');
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return true;
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}
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/**
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* Handle put request for a task / infolog entry
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*
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* @param array &$options
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* @param int $id
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* @param int $user=null account_id of owner, default null
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* @param string $prefix=null user prefix from path (eg. /ralf from /ralf/addressbook)
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* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
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*/
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function put(&$options,$id,$user=null,$prefix=null)
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{
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if ($this->debug) error_log(__METHOD__."($id, $user)".print_r($options,true));
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$oldTask = $this->_common_get_put_delete('PUT',$options,$id);
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if (!is_null($oldTask) && !is_array($oldTask))
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{
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return $oldTask;
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}
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$handler = $this->_get_handler();
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$vTodo = htmlspecialchars_decode($options['content']);
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if (is_array($oldTask))
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{
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$taskId = $oldTask['info_id'];
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$retval = true;
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}
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else // new entry
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{
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$taskId = 0;
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$retval = '201 Created';
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}
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if ($user)
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{
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if (!$prefix) // for everything in /infolog/
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{
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$user = null; // do NOT set current user (infolog_bo->write() set it for new entries anyway)
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}
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elseif($oldTask) // existing entries
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{
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if ($oldTask['info_owner'] != $user)
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{
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if ($this->debug) error_log(__METHOD__."(,$id,$user,$prefix) changing owner of existing entries is forbidden!");
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return '403 Forbidden'; // changing owner of existing entries is generally forbidden
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}
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$user = null;
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}
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else // new entries in /$user/infolog
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{
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// ACL is checked in infolog_bo->write() called by infolog_ical->importVTODO().
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// Not sure if it's a good idea to set a different owner, as GUI does NOT allow that,
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// thought there's an ACL for it and backend (infolog_bo) checks it.
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// More like the GUI would be to add it for current user and delegate it to $user.
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}
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}
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if (!($infoId = $handler->importVTODO($vTodo, $taskId, false, $user, null, $id)))
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{
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if ($this->debug) error_log(__METHOD__."(,$id) import_vtodo($options[content]) returned false");
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return '403 Forbidden';
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}
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if ($infoId != $taskId)
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{
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$retval = '201 Created';
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}
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// we should not return an etag here, as we never store the PUT ical byte-by-byte
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//header('ETag: "'.$this->get_etag($infoId).'"');
|
|
|
|
// send GroupDAV Location header only if we dont use caldav_name as path-attribute
|
|
if ($retval !== true && self::$path_attr != 'caldav_name')
|
|
{
|
|
$path = preg_replace('|(.*)/[^/]*|', '\1/', $options['path']);
|
|
header('Location: '.$this->base_uri.$path.self::get_path($infoId));
|
|
}
|
|
return $retval;
|
|
}
|
|
|
|
/**
|
|
* Handle delete request for a task / infolog entry
|
|
*
|
|
* @param array &$options
|
|
* @param int $id
|
|
* @return mixed boolean true on success, false on failure or string with http status (eg. '404 Not Found')
|
|
*/
|
|
function delete(&$options,$id)
|
|
{
|
|
if (!is_array($task = $this->_common_get_put_delete('DELETE',$options,$id)))
|
|
{
|
|
return $task;
|
|
}
|
|
return $this->bo->delete($task['info_id']);
|
|
}
|
|
|
|
/**
|
|
* Read an entry
|
|
*
|
|
* We have to make sure to not return or even consider in read deleted infologs, as the might have
|
|
* the same UID and/or caldav_name as not deleted ones and would block access to valid entries
|
|
*
|
|
* @param string|id $id
|
|
* @return array|boolean array with entry, false if no read rights, null if $id does not exist
|
|
*/
|
|
function read($id)
|
|
{
|
|
return $this->bo->read(array(self::$path_attr => $id, "info_status!='deleted'"),false,'server');
|
|
}
|
|
|
|
/**
|
|
* Check if user has the neccessary rights on a task / infolog entry
|
|
*
|
|
* @param int $acl EGW_ACL_READ, EGW_ACL_EDIT or EGW_ACL_DELETE
|
|
* @param array|int $task task-array or id
|
|
* @return boolean null if entry does not exist, false if no access, true if access permitted
|
|
*/
|
|
function check_access($acl,$task)
|
|
{
|
|
if (is_null($task)) return true;
|
|
|
|
return $this->bo->check_access($task,$acl);
|
|
}
|
|
|
|
/**
|
|
* Query ctag for infolog
|
|
*
|
|
* @return string
|
|
*/
|
|
public function getctag($path,$user)
|
|
{
|
|
return $this->bo->getctag($this->get_infolog_filter($path, $user));
|
|
}
|
|
|
|
/**
|
|
* Get the etag for an infolog entry
|
|
*
|
|
* etag currently uses the modifcation time (info_modified), 1.9.002 adds etag column, but it's not yet used!
|
|
*
|
|
* @param array|int $info array with infolog entry or info_id
|
|
* @return string|boolean string with etag or false
|
|
*/
|
|
function get_etag($info)
|
|
{
|
|
if (!is_array($info))
|
|
{
|
|
$info = $this->bo->read($info,true,'server');
|
|
}
|
|
if (!is_array($info) || !isset($info['info_id']) || !isset($info['info_datemodified']))
|
|
{
|
|
return false;
|
|
}
|
|
return $info['info_id'].':'.$info['info_datemodified'];
|
|
}
|
|
|
|
/**
|
|
* Add extra properties for calendar collections
|
|
*
|
|
* @param array $props=array() regular props by the groupdav handler
|
|
* @param string $displayname
|
|
* @param string $base_uri=null base url of handler
|
|
* @return array
|
|
*/
|
|
static function extra_properties(array $props=array(), $displayname, $base_uri=null)
|
|
{
|
|
// calendar description
|
|
$displayname = translation::convert(lang('Tasks of') . ' ' .
|
|
$displayname,translation::charset(),'utf-8');
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-description',$displayname);
|
|
// email of the current user, see caldav-sheduling draft
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-user-address-set',array(
|
|
HTTP_WebDAV_Server::mkprop('href','MAILTO:'.$GLOBALS['egw_info']['user']['email'])));
|
|
// supported components, currently only VEVENT
|
|
$props[] = HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'supported-calendar-component-set',array(
|
|
// HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VEVENT')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VCALENDAR')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VTIMEZONE')),
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'comp',array('name' => 'VTODO')),
|
|
));
|
|
|
|
$props[] = HTTP_WebDAV_Server::mkprop('supported-report-set',array(
|
|
HTTP_WebDAV_Server::mkprop('supported-report',array(
|
|
HTTP_WebDAV_Server::mkprop('report',array(
|
|
HTTP_WebDAV_Server::mkprop(groupdav::CALDAV,'calendar-multiget','')))))));
|
|
|
|
return $props;
|
|
}
|
|
|
|
/**
|
|
* Get the handler and set the supported fields
|
|
*
|
|
* @return infolog_ical
|
|
*/
|
|
private function _get_handler()
|
|
{
|
|
$handler = new infolog_ical();
|
|
$handler->setSupportedFields('GroupDAV',$this->agent);
|
|
|
|
return $handler;
|
|
}
|
|
} |