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comparison plugins/libcalendaring/libcalendaring.php @ 4:888e774ee983

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libcalendar plugin as distributed
author Charlie Root
date Sat, 13 Jan 2018 08:57:56 -0500
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children 082a19037887
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3:f6fe4b6ae66a 4:888e774ee983
1 <?php
2
3 /**
4 * Library providing common functions for calendaring plugins
5 *
6 * Provides utility functions for calendar-related modules such as
7 * - alarms display and dismissal
8 * - attachment handling
9 * - recurrence computation and UI elements
10 * - ical parsing and exporting
11 * - itip scheduling protocol
12 *
13 * @version @package_version@
14 * @author Thomas Bruederli <bruederli@kolabsys.com>
15 *
16 * Copyright (C) 2012-2015, Kolab Systems AG <contact@kolabsys.com>
17 *
18 * This program is free software: you can redistribute it and/or modify
19 * it under the terms of the GNU Affero General Public License as
20 * published by the Free Software Foundation, either version 3 of the
21 * License, or (at your option) any later version.
22 *
23 * This program is distributed in the hope that it will be useful,
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
26 * GNU Affero General Public License for more details.
27 *
28 * You should have received a copy of the GNU Affero General Public License
29 * along with this program. If not, see <http://www.gnu.org/licenses/>.
30 */
31
32 class libcalendaring extends rcube_plugin
33 {
34 public $rc;
35 public $timezone;
36 public $gmt_offset;
37 public $dst_active;
38 public $timezone_offset;
39 public $ical_parts = array();
40 public $ical_message;
41
42 public $defaults = array(
43 'calendar_date_format' => "yyyy-MM-dd",
44 'calendar_date_short' => "M-d",
45 'calendar_date_long' => "MMM d yyyy",
46 'calendar_date_agenda' => "ddd MM-dd",
47 'calendar_time_format' => "HH:mm",
48 'calendar_first_day' => 1,
49 'calendar_first_hour' => 6,
50 'calendar_date_format_sets' => array(
51 'yyyy-MM-dd' => array('MMM d yyyy', 'M-d', 'ddd MM-dd'),
52 'dd-MM-yyyy' => array('d MMM yyyy', 'd-M', 'ddd dd-MM'),
53 'yyyy/MM/dd' => array('MMM d yyyy', 'M/d', 'ddd MM/dd'),
54 'MM/dd/yyyy' => array('MMM d yyyy', 'M/d', 'ddd MM/dd'),
55 'dd/MM/yyyy' => array('d MMM yyyy', 'd/M', 'ddd dd/MM'),
56 'dd.MM.yyyy' => array('dd. MMM yyyy', 'd.M', 'ddd dd.MM.'),
57 'd.M.yyyy' => array('d. MMM yyyy', 'd.M', 'ddd d.MM.'),
58 ),
59 );
60
61 private static $instance;
62
63 private $mail_ical_parser;
64
65 /**
66 * Singleton getter to allow direct access from other plugins
67 */
68 public static function get_instance()
69 {
70 if (!self::$instance) {
71 self::$instance = new libcalendaring(rcube::get_instance()->plugins);
72 self::$instance->init_instance();
73 }
74
75 return self::$instance;
76 }
77
78 /**
79 * Initializes class properties
80 */
81 public function init_instance()
82 {
83 $this->rc = rcube::get_instance();
84
85 // set user's timezone
86 try {
87 $this->timezone = new DateTimeZone($this->rc->config->get('timezone', 'GMT'));
88 }
89 catch (Exception $e) {
90 $this->timezone = new DateTimeZone('GMT');
91 }
92
93 $now = new DateTime('now', $this->timezone);
94
95 $this->gmt_offset = $now->getOffset();
96 $this->dst_active = $now->format('I');
97 $this->timezone_offset = $this->gmt_offset / 3600 - $this->dst_active;
98
99 $this->add_texts('localization/', false);
100 }
101
102 /**
103 * Required plugin startup method
104 */
105 public function init()
106 {
107 self::$instance = $this;
108
109 $this->rc = rcube::get_instance();
110 $this->init_instance();
111
112 // include client scripts and styles
113 if ($this->rc->output) {
114 // add hook to display alarms
115 $this->add_hook('refresh', array($this, 'refresh'));
116 $this->register_action('plugin.alarms', array($this, 'alarms_action'));
117 $this->register_action('plugin.expand_attendee_group', array($this, 'expand_attendee_group'));
118 }
119
120 // proceed initialization in startup hook
121 $this->add_hook('startup', array($this, 'startup'));
122 }
123
124 /**
125 * Startup hook
126 */
127 public function startup($args)
128 {
129 if ($this->rc->output && $this->rc->output->type == 'html') {
130 $this->rc->output->set_env('libcal_settings', $this->load_settings());
131 $this->include_script('libcalendaring.js');
132 $this->include_stylesheet($this->local_skin_path() . '/libcal.css');
133
134 $this->add_label(
135 'itipaccepted', 'itiptentative', 'itipdeclined',
136 'itipdelegated', 'expandattendeegroup', 'expandattendeegroupnodata',
137 'statusorganizer', 'statusaccepted', 'statusdeclined',
138 'statusdelegated', 'statusunknown', 'statusneeds-action',
139 'statustentative', 'statuscompleted', 'statusin-process',
140 'delegatedto', 'delegatedfrom'
141 );
142 }
143
144 if ($args['task'] == 'mail') {
145 if ($args['action'] == 'show' || $args['action'] == 'preview') {
146 $this->add_hook('message_load', array($this, 'mail_message_load'));
147 }
148 }
149 }
150
151 /**
152 * Load iCalendar functions
153 */
154 public static function get_ical()
155 {
156 $self = self::get_instance();
157 require_once __DIR__ . '/libvcalendar.php';
158 return new libvcalendar();
159 }
160
161 /**
162 * Load iTip functions
163 */
164 public static function get_itip($domain = 'libcalendaring')
165 {
166 $self = self::get_instance();
167 require_once __DIR__ . '/lib/libcalendaring_itip.php';
168 return new libcalendaring_itip($self, $domain);
169 }
170
171 /**
172 * Load recurrence computation engine
173 */
174 public static function get_recurrence()
175 {
176 $self = self::get_instance();
177 require_once __DIR__ . '/lib/libcalendaring_recurrence.php';
178 return new libcalendaring_recurrence($self);
179 }
180
181 /**
182 * Shift dates into user's current timezone
183 *
184 * @param mixed Any kind of a date representation (DateTime object, string or unix timestamp)
185 * @return object DateTime object in user's timezone
186 */
187 public function adjust_timezone($dt, $dateonly = false)
188 {
189 if (is_numeric($dt))
190 $dt = new DateTime('@'.$dt);
191 else if (is_string($dt))
192 $dt = rcube_utils::anytodatetime($dt);
193
194 if ($dt instanceof DateTime && !($dt->_dateonly || $dateonly)) {
195 $dt->setTimezone($this->timezone);
196 }
197
198 return $dt;
199 }
200
201
202 /**
203 *
204 */
205 public function load_settings()
206 {
207 $this->date_format_defaults();
208
209 $settings = array();
210 $keys = array('date_format', 'time_format', 'date_short', 'date_long');
211
212 foreach ($keys as $key) {
213 $settings[$key] = (string)$this->rc->config->get('calendar_' . $key, $this->defaults['calendar_' . $key]);
214 $settings[$key] = str_replace('Y', 'y', $settings[$key]);
215 }
216
217 $settings['dates_long'] = str_replace(' yyyy', '[ yyyy]', $settings['date_long']) . "{ '&mdash;' " . $settings['date_long'] . '}';
218 $settings['first_day'] = (int)$this->rc->config->get('calendar_first_day', $this->defaults['calendar_first_day']);
219 $settings['timezone'] = $this->timezone_offset;
220 $settings['dst'] = $this->dst_active;
221
222 // localization
223 $settings['days'] = array(
224 $this->rc->gettext('sunday'), $this->rc->gettext('monday'),
225 $this->rc->gettext('tuesday'), $this->rc->gettext('wednesday'),
226 $this->rc->gettext('thursday'), $this->rc->gettext('friday'),
227 $this->rc->gettext('saturday')
228 );
229 $settings['days_short'] = array(
230 $this->rc->gettext('sun'), $this->rc->gettext('mon'),
231 $this->rc->gettext('tue'), $this->rc->gettext('wed'),
232 $this->rc->gettext('thu'), $this->rc->gettext('fri'),
233 $this->rc->gettext('sat')
234 );
235 $settings['months'] = array(
236 $this->rc->gettext('longjan'), $this->rc->gettext('longfeb'),
237 $this->rc->gettext('longmar'), $this->rc->gettext('longapr'),
238 $this->rc->gettext('longmay'), $this->rc->gettext('longjun'),
239 $this->rc->gettext('longjul'), $this->rc->gettext('longaug'),
240 $this->rc->gettext('longsep'), $this->rc->gettext('longoct'),
241 $this->rc->gettext('longnov'), $this->rc->gettext('longdec')
242 );
243 $settings['months_short'] = array(
244 $this->rc->gettext('jan'), $this->rc->gettext('feb'),
245 $this->rc->gettext('mar'), $this->rc->gettext('apr'),
246 $this->rc->gettext('may'), $this->rc->gettext('jun'),
247 $this->rc->gettext('jul'), $this->rc->gettext('aug'),
248 $this->rc->gettext('sep'), $this->rc->gettext('oct'),
249 $this->rc->gettext('nov'), $this->rc->gettext('dec')
250 );
251 $settings['today'] = $this->rc->gettext('today');
252
253 // define list of file types which can be displayed inline
254 // same as in program/steps/mail/show.inc
255 $settings['mimetypes'] = (array)$this->rc->config->get('client_mimetypes');
256
257 return $settings;
258 }
259
260
261 /**
262 * Helper function to set date/time format according to config and user preferences
263 */
264 private function date_format_defaults()
265 {
266 static $defaults = array();
267
268 // nothing to be done
269 if (isset($defaults['date_format']))
270 return;
271
272 $defaults['date_format'] = $this->rc->config->get('calendar_date_format', self::from_php_date_format($this->rc->config->get('date_format')));
273 $defaults['time_format'] = $this->rc->config->get('calendar_time_format', self::from_php_date_format($this->rc->config->get('time_format')));
274
275 // override defaults
276 if ($defaults['date_format'])
277 $this->defaults['calendar_date_format'] = $defaults['date_format'];
278 if ($defaults['time_format'])
279 $this->defaults['calendar_time_format'] = $defaults['time_format'];
280
281 // derive format variants from basic date format
282 $format_sets = $this->rc->config->get('calendar_date_format_sets', $this->defaults['calendar_date_format_sets']);
283 if ($format_set = $format_sets[$this->defaults['calendar_date_format']]) {
284 $this->defaults['calendar_date_long'] = $format_set[0];
285 $this->defaults['calendar_date_short'] = $format_set[1];
286 $this->defaults['calendar_date_agenda'] = $format_set[2];
287 }
288 }
289
290 /**
291 * Compose a date string for the given event
292 */
293 public function event_date_text($event, $tzinfo = false)
294 {
295 $fromto = '--';
296
297 // handle task objects
298 if ($event['_type'] == 'task' && is_object($event['due'])) {
299 $date_format = $event['due']->_dateonly ? self::to_php_date_format($this->rc->config->get('calendar_date_format', $this->defaults['calendar_date_format'])) : null;
300 $fromto = $this->rc->format_date($event['due'], $date_format, false);
301
302 // add timezone information
303 if ($fromto && $tzinfo && ($tzname = $this->timezone->getName())) {
304 $fromto .= ' (' . strtr($tzname, '_', ' ') . ')';
305 }
306
307 return $fromto;
308 }
309
310 // abort if no valid event dates are given
311 if (!is_object($event['start']) || !is_a($event['start'], 'DateTime') || !is_object($event['end']) || !is_a($event['end'], 'DateTime')) {
312 return $fromto;
313 }
314
315 $duration = $event['start']->diff($event['end'])->format('s');
316
317 $this->date_format_defaults();
318 $date_format = self::to_php_date_format($this->rc->config->get('calendar_date_format', $this->defaults['calendar_date_format']));
319 $time_format = self::to_php_date_format($this->rc->config->get('calendar_time_format', $this->defaults['calendar_time_format']));
320
321 if ($event['allday']) {
322 $fromto = $this->rc->format_date($event['start'], $date_format);
323 if (($todate = $this->rc->format_date($event['end'], $date_format)) != $fromto)
324 $fromto .= ' - ' . $todate;
325 }
326 else if ($duration < 86400 && $event['start']->format('d') == $event['end']->format('d')) {
327 $fromto = $this->rc->format_date($event['start'], $date_format) . ' ' . $this->rc->format_date($event['start'], $time_format) .
328 ' - ' . $this->rc->format_date($event['end'], $time_format);
329 }
330 else {
331 $fromto = $this->rc->format_date($event['start'], $date_format) . ' ' . $this->rc->format_date($event['start'], $time_format) .
332 ' - ' . $this->rc->format_date($event['end'], $date_format) . ' ' . $this->rc->format_date($event['end'], $time_format);
333 }
334
335 // add timezone information
336 if ($tzinfo && ($tzname = $this->timezone->getName())) {
337 $fromto .= ' (' . strtr($tzname, '_', ' ') . ')';
338 }
339
340 return $fromto;
341 }
342
343
344 /**
345 * Render HTML form for alarm configuration
346 */
347 public function alarm_select($attrib, $alarm_types, $absolute_time = true)
348 {
349 unset($attrib['name']);
350
351 $input_value = new html_inputfield(array('name' => 'alarmvalue[]', 'class' => 'edit-alarm-value', 'size' => 3));
352 $input_date = new html_inputfield(array('name' => 'alarmdate[]', 'class' => 'edit-alarm-date', 'size' => 10));
353 $input_time = new html_inputfield(array('name' => 'alarmtime[]', 'class' => 'edit-alarm-time', 'size' => 6));
354 $select_type = new html_select(array('name' => 'alarmtype[]', 'class' => 'edit-alarm-type', 'id' => $attrib['id']));
355 $select_offset = new html_select(array('name' => 'alarmoffset[]', 'class' => 'edit-alarm-offset'));
356 $select_related = new html_select(array('name' => 'alarmrelated[]', 'class' => 'edit-alarm-related'));
357 $object_type = $attrib['_type'] ?: 'event';
358
359 $select_type->add($this->gettext('none'), '');
360 foreach ($alarm_types as $type)
361 $select_type->add($this->gettext(strtolower("alarm{$type}option")), $type);
362
363 foreach (array('-M','-H','-D','+M','+H','+D') as $trigger)
364 $select_offset->add($this->gettext('trigger' . $trigger), $trigger);
365
366 $select_offset->add($this->gettext('trigger0'), '0');
367 if ($absolute_time)
368 $select_offset->add($this->gettext('trigger@'), '@');
369
370 $select_related->add($this->gettext('relatedstart'), 'start');
371 $select_related->add($this->gettext('relatedend' . $object_type), 'end');
372
373 // pre-set with default values from user settings
374 $preset = self::parse_alarm_value($this->rc->config->get('calendar_default_alarm_offset', '-15M'));
375 $hidden = array('style' => 'display:none');
376 $html = html::span('edit-alarm-set',
377 $select_type->show($this->rc->config->get('calendar_default_alarm_type', '')) . ' ' .
378 html::span(array('class' => 'edit-alarm-values', 'style' => 'display:none'),
379 $input_value->show($preset[0]) . ' ' .
380 $select_offset->show($preset[1]) . ' ' .
381 $select_related->show() . ' ' .
382 $input_date->show('', $hidden) . ' ' .
383 $input_time->show('', $hidden)
384 )
385 );
386
387 // TODO: support adding more alarms
388 #$html .= html::a(array('href' => '#', 'id' => 'edit-alam-add', 'title' => $this->gettext('addalarm')),
389 # $attrib['addicon'] ? html::img(array('src' => $attrib['addicon'], 'alt' => 'add')) : '(+)');
390
391 return $html;
392 }
393
394 /**
395 * Get a list of email addresses of the given user (from login and identities)
396 *
397 * @param string User Email (default to current user)
398 * @return array Email addresses related to the user
399 */
400 public function get_user_emails($user = null)
401 {
402 static $_emails = array();
403
404 if (empty($user)) {
405 $user = $this->rc->user->get_username();
406 }
407
408 // return cached result
409 if (is_array($_emails[$user])) {
410 return $_emails[$user];
411 }
412
413 $emails = array($user);
414 $plugin = $this->rc->plugins->exec_hook('calendar_user_emails', array('emails' => $emails));
415 $emails = array_map('strtolower', $plugin['emails']);
416
417 // add all emails from the current user's identities
418 if (!$plugin['abort'] && ($user == $this->rc->user->get_username())) {
419 foreach ($this->rc->user->list_emails() as $identity) {
420 $emails[] = strtolower($identity['email']);
421 }
422 }
423
424 $_emails[$user] = array_unique($emails);
425 return $_emails[$user];
426 }
427
428 /**
429 * Set the given participant status to the attendee matching the current user's identities
430 *
431 * @param array Hash array with event struct
432 * @param string The PARTSTAT value to set
433 * @return mixed Email address of the updated attendee or False if none matching found
434 */
435 public function set_partstat(&$event, $status, $recursive = true)
436 {
437 $success = false;
438 $emails = $this->get_user_emails();
439 foreach ((array)$event['attendees'] as $i => $attendee) {
440 if ($attendee['email'] && in_array(strtolower($attendee['email']), $emails)) {
441 $event['attendees'][$i]['status'] = strtoupper($status);
442 $success = $attendee['email'];
443 }
444 }
445
446 // apply partstat update to each existing exception
447 if ($event['recurrence'] && is_array($event['recurrence']['EXCEPTIONS'])) {
448 foreach ($event['recurrence']['EXCEPTIONS'] as $i => $exception) {
449 $this->set_partstat($event['recurrence']['EXCEPTIONS'][$i], $status, false);
450 }
451
452 // set link to top-level exceptions
453 $event['exceptions'] = &$event['recurrence']['EXCEPTIONS'];
454 }
455
456 return $success;
457 }
458
459
460 /********* Alarms handling *********/
461
462 /**
463 * Helper function to convert alarm trigger strings
464 * into two-field values (e.g. "-45M" => 45, "-M")
465 */
466 public static function parse_alarm_value($val)
467 {
468 if ($val[0] == '@') {
469 return array(new DateTime($val));
470 }
471 else if (preg_match('/([+-]?)P?(T?\d+[HMSDW])+/', $val, $m) && preg_match_all('/T?(\d+)([HMSDW])/', $val, $m2, PREG_SET_ORDER)) {
472 if ($m[1] == '')
473 $m[1] = '+';
474 foreach ($m2 as $seg) {
475 $prefix = $seg[2] == 'D' || $seg[2] == 'W' ? 'P' : 'PT';
476 if ($seg[1] > 0) { // ignore zero values
477 // convert seconds to minutes
478 if ($seg[2] == 'S') {
479 $seg[2] = 'M';
480 $seg[1] = max(1, round($seg[1]/60));
481 }
482
483 return array($seg[1], $m[1].$seg[2], $m[1].$seg[1].$seg[2], $m[1].$prefix.$seg[1].$seg[2]);
484 }
485 }
486
487 // return zero value nevertheless
488 return array($seg[1], $m[1].$seg[2], $m[1].$seg[1].$seg[2], $m[1].$prefix.$seg[1].$seg[2]);
489 }
490
491 return false;
492 }
493
494 /**
495 * Convert the alarms list items to be processed on the client
496 */
497 public static function to_client_alarms($valarms)
498 {
499 return array_map(function($alarm){
500 if ($alarm['trigger'] instanceof DateTime) {
501 $alarm['trigger'] = '@' . $alarm['trigger']->format('U');
502 }
503 else if ($trigger = libcalendaring::parse_alarm_value($alarm['trigger'])) {
504 $alarm['trigger'] = $trigger[2];
505 }
506 return $alarm;
507 }, (array)$valarms);
508 }
509
510 /**
511 * Process the alarms values submitted by the client
512 */
513 public static function from_client_alarms($valarms)
514 {
515 return array_map(function($alarm){
516 if ($alarm['trigger'][0] == '@') {
517 try {
518 $alarm['trigger'] = new DateTime($alarm['trigger']);
519 $alarm['trigger']->setTimezone(new DateTimeZone('UTC'));
520 }
521 catch (Exception $e) { /* handle this ? */ }
522 }
523 else if ($trigger = libcalendaring::parse_alarm_value($alarm['trigger'])) {
524 $alarm['trigger'] = $trigger[3];
525 }
526 return $alarm;
527 }, (array)$valarms);
528 }
529
530 /**
531 * Render localized text for alarm settings
532 */
533 public static function alarms_text($alarms)
534 {
535 if (is_array($alarms) && is_array($alarms[0])) {
536 $texts = array();
537 foreach ($alarms as $alarm) {
538 if ($text = self::alarm_text($alarm))
539 $texts[] = $text;
540 }
541
542 return join(', ', $texts);
543 }
544 else {
545 return self::alarm_text($alarms);
546 }
547 }
548
549 /**
550 * Render localized text for a single alarm property
551 */
552 public static function alarm_text($alarm)
553 {
554 if (is_string($alarm)) {
555 list($trigger, $action) = explode(':', $alarm);
556 }
557 else {
558 $trigger = $alarm['trigger'];
559 $action = $alarm['action'];
560 $related = $alarm['related'];
561 }
562
563 $text = '';
564 $rcube = rcube::get_instance();
565
566 switch ($action) {
567 case 'EMAIL':
568 $text = $rcube->gettext('libcalendaring.alarmemail');
569 break;
570 case 'DISPLAY':
571 $text = $rcube->gettext('libcalendaring.alarmdisplay');
572 break;
573 case 'AUDIO':
574 $text = $rcube->gettext('libcalendaring.alarmaudio');
575 break;
576 }
577
578 if ($trigger instanceof DateTime) {
579 $text .= ' ' . $rcube->gettext(array(
580 'name' => 'libcalendaring.alarmat',
581 'vars' => array('datetime' => $rcube->format_date($trigger))
582 ));
583 }
584 else if (preg_match('/@(\d+)/', $trigger, $m)) {
585 $text .= ' ' . $rcube->gettext(array(
586 'name' => 'libcalendaring.alarmat',
587 'vars' => array('datetime' => $rcube->format_date($m[1]))
588 ));
589 }
590 else if ($val = self::parse_alarm_value($trigger)) {
591 $r = strtoupper($related ?: 'start') == 'END' ? 'end' : '';
592 // TODO: for all-day events say 'on date of event at XX' ?
593 if ($val[0] == 0) {
594 $text .= ' ' . $rcube->gettext('libcalendaring.triggerattime' . $r);
595 }
596 else {
597 $label = 'libcalendaring.trigger' . $r . $val[1];
598 $text .= ' ' . intval($val[0]) . ' ' . $rcube->gettext($label);
599 }
600 }
601 else {
602 return false;
603 }
604
605 return $text;
606 }
607
608 /**
609 * Get the next alarm (time & action) for the given event
610 *
611 * @param array Record data
612 * @return array Hash array with alarm time/type or null if no alarms are configured
613 */
614 public static function get_next_alarm($rec, $type = 'event')
615 {
616 if (!($rec['valarms'] || $rec['alarms']) || $rec['cancelled'] || $rec['status'] == 'CANCELLED')
617 return null;
618
619 if ($type == 'task') {
620 $timezone = self::get_instance()->timezone;
621 if ($rec['startdate'])
622 $rec['start'] = new DateTime($rec['startdate'] . ' ' . ($rec['starttime'] ?: '12:00'), $timezone);
623 if ($rec['date'])
624 $rec[($rec['start'] ? 'end' : 'start')] = new DateTime($rec['date'] . ' ' . ($rec['time'] ?: '12:00'), $timezone);
625 }
626
627 if (!$rec['end'])
628 $rec['end'] = $rec['start'];
629
630 // support legacy format
631 if (!$rec['valarms']) {
632 list($trigger, $action) = explode(':', $rec['alarms'], 2);
633 if ($alarm = self::parse_alarm_value($trigger)) {
634 $rec['valarms'] = array(array('action' => $action, 'trigger' => $alarm[3] ?: $alarm[0]));
635 }
636 }
637
638 $expires = new DateTime('now - 12 hours');
639 $alarm_id = $rec['id']; // alarm ID eq. record ID by default to keep backwards compatibility
640
641 // handle multiple alarms
642 $notify_at = null;
643 foreach ($rec['valarms'] as $alarm) {
644 $notify_time = null;
645
646 if ($alarm['trigger'] instanceof DateTime) {
647 $notify_time = $alarm['trigger'];
648 }
649 else if (is_string($alarm['trigger'])) {
650 $refdate = $alarm['related'] == 'END' ? $rec['end'] : $rec['start'];
651
652 // abort if no reference date is available to compute notification time
653 if (!is_a($refdate, 'DateTime'))
654 continue;
655
656 // TODO: for all-day events, take start @ 00:00 as reference date ?
657
658 try {
659 $interval = new DateInterval(trim($alarm['trigger'], '+-'));
660 $interval->invert = $alarm['trigger'][0] == '-';
661 $notify_time = clone $refdate;
662 $notify_time->add($interval);
663 }
664 catch (Exception $e) {
665 rcube::raise_error($e, true);
666 continue;
667 }
668 }
669
670 if ($notify_time && (!$notify_at || ($notify_time > $notify_at && $notify_time > $expires))) {
671 $notify_at = $notify_time;
672 $action = $alarm['action'];
673 $alarm_prop = $alarm;
674
675 // generate a unique alarm ID if multiple alarms are set
676 if (count($rec['valarms']) > 1) {
677 $alarm_id = substr(md5($rec['id']), 0, 16) . '-' . $notify_at->format('Ymd\THis');
678 }
679 }
680 }
681
682 return !$notify_at ? null : array(
683 'time' => $notify_at->format('U'),
684 'action' => $action ? strtoupper($action) : 'DISPLAY',
685 'id' => $alarm_id,
686 'prop' => $alarm_prop,
687 );
688 }
689
690 /**
691 * Handler for keep-alive requests
692 * This will check for pending notifications and pass them to the client
693 */
694 public function refresh($attr)
695 {
696 // collect pending alarms from all providers (e.g. calendar, tasks)
697 $plugin = $this->rc->plugins->exec_hook('pending_alarms', array(
698 'time' => time(),
699 'alarms' => array(),
700 ));
701
702 if (!$plugin['abort'] && !empty($plugin['alarms'])) {
703 // make sure texts and env vars are available on client
704 $this->add_texts('localization/', true);
705 $this->rc->output->add_label('close');
706 $this->rc->output->set_env('snooze_select', $this->snooze_select());
707 $this->rc->output->command('plugin.display_alarms', $this->_alarms_output($plugin['alarms']));
708 }
709 }
710
711 /**
712 * Handler for alarm dismiss/snooze requests
713 */
714 public function alarms_action()
715 {
716 // $action = rcube_utils::get_input_value('action', rcube_utils::INPUT_GPC);
717 $data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
718
719 $data['ids'] = explode(',', $data['id']);
720 $plugin = $this->rc->plugins->exec_hook('dismiss_alarms', $data);
721
722 if ($plugin['success'])
723 $this->rc->output->show_message('successfullysaved', 'confirmation');
724 else
725 $this->rc->output->show_message('calendar.errorsaving', 'error');
726 }
727
728 /**
729 * Generate reduced and streamlined output for pending alarms
730 */
731 private function _alarms_output($alarms)
732 {
733 $out = array();
734 foreach ($alarms as $alarm) {
735 $out[] = array(
736 'id' => $alarm['id'],
737 'start' => $alarm['start'] ? $this->adjust_timezone($alarm['start'])->format('c') : '',
738 'end' => $alarm['end'] ? $this->adjust_timezone($alarm['end'])->format('c') : '',
739 'allDay' => $alarm['allday'] == 1,
740 'action' => $alarm['action'],
741 'title' => $alarm['title'],
742 'location' => $alarm['location'],
743 'calendar' => $alarm['calendar'],
744 );
745 }
746
747 return $out;
748 }
749
750 /**
751 * Render a dropdown menu to choose snooze time
752 */
753 private function snooze_select($attrib = array())
754 {
755 $steps = array(
756 5 => 'repeatinmin',
757 10 => 'repeatinmin',
758 15 => 'repeatinmin',
759 20 => 'repeatinmin',
760 30 => 'repeatinmin',
761 60 => 'repeatinhr',
762 120 => 'repeatinhrs',
763 1440 => 'repeattomorrow',
764 10080 => 'repeatinweek',
765 );
766
767 $items = array();
768 foreach ($steps as $n => $label) {
769 $items[] = html::tag('li', null, html::a(array('href' => "#" . ($n * 60), 'class' => 'active'),
770 $this->gettext(array('name' => $label, 'vars' => array('min' => $n % 60, 'hrs' => intval($n / 60))))));
771 }
772
773 return html::tag('ul', $attrib + array('class' => 'toolbarmenu'), join("\n", $items), html::$common_attrib);
774 }
775
776
777 /********* Recurrence rules handling ********/
778
779 /**
780 * Render localized text describing the recurrence rule of an event
781 */
782 public function recurrence_text($rrule)
783 {
784 $limit = 10;
785 $exdates = array();
786 $format = $this->rc->config->get('calendar_date_format', $this->defaults['calendar_date_format']);
787 $format = self::to_php_date_format($format);
788 $format_fn = function($dt) use ($format) {
789 return rcmail::get_instance()->format_date($dt, $format);
790 };
791
792 if (is_array($rrule['EXDATE']) && !empty($rrule['EXDATE'])) {
793 $exdates = array_map($format_fn, $rrule['EXDATE']);
794 }
795
796 if (empty($rrule['FREQ']) && !empty($rrule['RDATE'])) {
797 $rdates = array_map($format_fn, $rrule['RDATE']);
798
799 if (!empty($exdates)) {
800 $rdates = array_diff($rdates, $exdates);
801 }
802
803 if (count($rdates) > $limit) {
804 $rdates = array_slice($rdates, 0, $limit);
805 $more = true;
806 }
807
808 return $this->gettext('ondate') . ' ' . join(', ', $rdates)
809 . ($more ? '...' : '');
810 }
811
812 $output = sprintf('%s %d ', $this->gettext('every'), $rrule['INTERVAL'] ?: 1);
813
814 switch ($rrule['FREQ']) {
815 case 'DAILY':
816 $output .= $this->gettext('days');
817 break;
818 case 'WEEKLY':
819 $output .= $this->gettext('weeks');
820 break;
821 case 'MONTHLY':
822 $output .= $this->gettext('months');
823 break;
824 case 'YEARLY':
825 $output .= $this->gettext('years');
826 break;
827 }
828
829 if ($rrule['COUNT']) {
830 $until = $this->gettext(array('name' => 'forntimes', 'vars' => array('nr' => $rrule['COUNT'])));
831 }
832 else if ($rrule['UNTIL']) {
833 $until = $this->gettext('recurrencend') . ' ' . $this->rc->format_date($rrule['UNTIL'], $format);
834 }
835 else {
836 $until = $this->gettext('forever');
837 }
838
839 $output .= ', ' . $until;
840
841 if (!empty($exdates)) {
842 if (count($exdates) > $limit) {
843 $exdates = array_slice($exdates, 0, $limit);
844 $more = true;
845 }
846
847 $output = '; ' . $this->gettext('except') . ' ' . join(', ', $exdates)
848 . ($more ? '...' : '');
849 }
850
851 return $output;
852 }
853
854 /**
855 * Generate the form for recurrence settings
856 */
857 public function recurrence_form($attrib = array())
858 {
859 switch ($attrib['part']) {
860 // frequency selector
861 case 'frequency':
862 $select = new html_select(array('name' => 'frequency', 'id' => 'edit-recurrence-frequency'));
863 $select->add($this->gettext('never'), '');
864 $select->add($this->gettext('daily'), 'DAILY');
865 $select->add($this->gettext('weekly'), 'WEEKLY');
866 $select->add($this->gettext('monthly'), 'MONTHLY');
867 $select->add($this->gettext('yearly'), 'YEARLY');
868 $select->add($this->gettext('rdate'), 'RDATE');
869 $html = html::label('edit-recurrence-frequency', $this->gettext('frequency')) . $select->show('');
870 break;
871
872 // daily recurrence
873 case 'daily':
874 $select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval', 'id' => 'edit-recurrence-interval-daily'));
875 $html = html::div($attrib, html::label('edit-recurrence-interval-daily', $this->gettext('every')) . $select->show(1) . html::span('label-after', $this->gettext('days')));
876 break;
877
878 // weekly recurrence form
879 case 'weekly':
880 $select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval', 'id' => 'edit-recurrence-interval-weekly'));
881 $html = html::div($attrib, html::label('edit-recurrence-interval-weekly', $this->gettext('every')) . $select->show(1) . html::span('label-after', $this->gettext('weeks')));
882 // weekday selection
883 $daymap = array('sun','mon','tue','wed','thu','fri','sat');
884 $checkbox = new html_checkbox(array('name' => 'byday', 'class' => 'edit-recurrence-weekly-byday'));
885 $first = $this->rc->config->get('calendar_first_day', 1);
886 for ($weekdays = '', $j = $first; $j <= $first+6; $j++) {
887 $d = $j % 7;
888 $weekdays .= html::label(array('class' => 'weekday'),
889 $checkbox->show('', array('value' => strtoupper(substr($daymap[$d], 0, 2)))) .
890 $this->gettext($daymap[$d])
891 ) . ' ';
892 }
893 $html .= html::div($attrib, html::label(null, $this->gettext('bydays')) . $weekdays);
894 break;
895
896 // monthly recurrence form
897 case 'monthly':
898 $select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval', 'id' => 'edit-recurrence-interval-monthly'));
899 $html = html::div($attrib, html::label('edit-recurrence-interval-monthly', $this->gettext('every')) . $select->show(1) . html::span('label-after', $this->gettext('months')));
900
901 $checkbox = new html_checkbox(array('name' => 'bymonthday', 'class' => 'edit-recurrence-monthly-bymonthday'));
902 for ($monthdays = '', $d = 1; $d <= 31; $d++) {
903 $monthdays .= html::label(array('class' => 'monthday'), $checkbox->show('', array('value' => $d)) . $d);
904 $monthdays .= $d % 7 ? ' ' : html::br();
905 }
906
907 // rule selectors
908 $radio = new html_radiobutton(array('name' => 'repeatmode', 'class' => 'edit-recurrence-monthly-mode'));
909 $table = new html_table(array('cols' => 2, 'border' => 0, 'cellpadding' => 0, 'class' => 'formtable'));
910 $table->add('label', html::label(null, $radio->show('BYMONTHDAY', array('value' => 'BYMONTHDAY')) . ' ' . $this->gettext('each')));
911 $table->add(null, $monthdays);
912 $table->add('label', html::label(null, $radio->show('', array('value' => 'BYDAY')) . ' ' . $this->gettext('onevery')));
913 $table->add(null, $this->rrule_selectors($attrib['part']));
914
915 $html .= html::div($attrib, $table->show());
916 break;
917
918 // annually recurrence form
919 case 'yearly':
920 $select = $this->interval_selector(array('name' => 'interval', 'class' => 'edit-recurrence-interval', 'id' => 'edit-recurrence-interval-yearly'));
921 $html = html::div($attrib, html::label('edit-recurrence-interval-yearly', $this->gettext('every')) . $select->show(1) . html::span('label-after', $this->gettext('years')));
922 // month selector
923 $monthmap = array('','jan','feb','mar','apr','may','jun','jul','aug','sep','oct','nov','dec');
924 $checkbox = new html_checkbox(array('name' => 'bymonth', 'class' => 'edit-recurrence-yearly-bymonth'));
925 for ($months = '', $m = 1; $m <= 12; $m++) {
926 $months .= html::label(array('class' => 'month'), $checkbox->show(null, array('value' => $m)) . $this->gettext($monthmap[$m]));
927 $months .= $m % 4 ? ' ' : html::br();
928 }
929 $html .= html::div($attrib + array('id' => 'edit-recurrence-yearly-bymonthblock'), $months);
930
931 // day rule selection
932 $html .= html::div($attrib, html::label(null, $this->gettext('onevery')) . $this->rrule_selectors($attrib['part'], '---'));
933 break;
934
935 // end of recurrence form
936 case 'until':
937 $radio = new html_radiobutton(array('name' => 'repeat', 'class' => 'edit-recurrence-until'));
938 $select = $this->interval_selector(array('name' => 'times', 'id' => 'edit-recurrence-repeat-times'));
939 $input = new html_inputfield(array('name' => 'untildate', 'id' => 'edit-recurrence-enddate', 'size' => "10"));
940
941 $html = html::div('line first',
942 html::label(null, $radio->show('', array('value' => '', 'id' => 'edit-recurrence-repeat-forever')) . ' ' .
943 $this->gettext('forever'))
944 );
945
946 $forntimes = $this->gettext(array(
947 'name' => 'forntimes',
948 'vars' => array('nr' => '%s'))
949 );
950 $html .= html::div('line',
951 $radio->show('', array('value' => 'count', 'id' => 'edit-recurrence-repeat-count', 'aria-label' => sprintf($forntimes, 'N'))) . ' ' .
952 sprintf($forntimes, $select->show(1))
953 );
954
955 $html .= html::div('line',
956 $radio->show('', array('value' => 'until', 'id' => 'edit-recurrence-repeat-until', 'aria-label' => $this->gettext('untilenddate'))) . ' ' .
957 $this->gettext('untildate') . ' ' . $input->show('', array('aria-label' => $this->gettext('untilenddate')))
958 );
959
960 $html = html::div($attrib, html::label(null, ucfirst($this->gettext('recurrencend'))) . $html);
961 break;
962
963 case 'rdate':
964 $ul = html::tag('ul', array('id' => 'edit-recurrence-rdates'), '');
965 $input = new html_inputfield(array('name' => 'rdate', 'id' => 'edit-recurrence-rdate-input', 'size' => "10"));
966 $button = new html_inputfield(array('type' => 'button', 'class' => 'button add', 'value' => $this->gettext('addrdate')));
967 $html .= html::div($attrib, $ul . html::div('inputform', $input->show() . $button->show()));
968 break;
969 }
970
971 return $html;
972 }
973
974 /**
975 * Input field for interval selection
976 */
977 private function interval_selector($attrib)
978 {
979 $select = new html_select($attrib);
980 $select->add(range(1,30), range(1,30));
981 return $select;
982 }
983
984 /**
985 * Drop-down menus for recurrence rules like "each last sunday of"
986 */
987 private function rrule_selectors($part, $noselect = null)
988 {
989 // rule selectors
990 $select_prefix = new html_select(array('name' => 'bydayprefix', 'id' => "edit-recurrence-$part-prefix"));
991 if ($noselect) $select_prefix->add($noselect, '');
992 $select_prefix->add(array(
993 $this->gettext('first'),
994 $this->gettext('second'),
995 $this->gettext('third'),
996 $this->gettext('fourth'),
997 $this->gettext('last')
998 ),
999 array(1, 2, 3, 4, -1));
1000
1001 $select_wday = new html_select(array('name' => 'byday', 'id' => "edit-recurrence-$part-byday"));
1002 if ($noselect) $select_wday->add($noselect, '');
1003
1004 $daymap = array('sunday','monday','tuesday','wednesday','thursday','friday','saturday');
1005 $first = $this->rc->config->get('calendar_first_day', 1);
1006 for ($j = $first; $j <= $first+6; $j++) {
1007 $d = $j % 7;
1008 $select_wday->add($this->gettext($daymap[$d]), strtoupper(substr($daymap[$d], 0, 2)));
1009 }
1010
1011 return $select_prefix->show() . '&nbsp;' . $select_wday->show();
1012 }
1013
1014 /**
1015 * Convert the recurrence settings to be processed on the client
1016 */
1017 public function to_client_recurrence($recurrence, $allday = false)
1018 {
1019 if ($recurrence['UNTIL'])
1020 $recurrence['UNTIL'] = $this->adjust_timezone($recurrence['UNTIL'], $allday)->format('c');
1021
1022 // format RDATE values
1023 if (is_array($recurrence['RDATE'])) {
1024 $libcal = $this;
1025 $recurrence['RDATE'] = array_map(function($rdate) use ($libcal) {
1026 return $libcal->adjust_timezone($rdate, true)->format('c');
1027 }, $recurrence['RDATE']);
1028 }
1029
1030 unset($recurrence['EXCEPTIONS']);
1031
1032 return $recurrence;
1033 }
1034
1035 /**
1036 * Process the alarms values submitted by the client
1037 */
1038 public function from_client_recurrence($recurrence, $start = null)
1039 {
1040 if (is_array($recurrence) && !empty($recurrence['UNTIL'])) {
1041 $recurrence['UNTIL'] = new DateTime($recurrence['UNTIL'], $this->timezone);
1042 }
1043
1044 if (is_array($recurrence) && is_array($recurrence['RDATE'])) {
1045 $tz = $this->timezone;
1046 $recurrence['RDATE'] = array_map(function($rdate) use ($tz, $start) {
1047 try {
1048 $dt = new DateTime($rdate, $tz);
1049 if (is_a($start, 'DateTime'))
1050 $dt->setTime($start->format('G'), $start->format('i'));
1051 return $dt;
1052 }
1053 catch (Exception $e) {
1054 return null;
1055 }
1056 }, $recurrence['RDATE']);
1057 }
1058
1059 return $recurrence;
1060 }
1061
1062
1063 /********* Attachments handling *********/
1064
1065 /**
1066 * Handler for attachment uploads
1067 */
1068 public function attachment_upload($session_key, $id_prefix = '')
1069 {
1070 // Upload progress update
1071 if (!empty($_GET['_progress'])) {
1072 $this->rc->upload_progress();
1073 }
1074
1075 $recid = $id_prefix . rcube_utils::get_input_value('_id', rcube_utils::INPUT_GPC);
1076 $uploadid = rcube_utils::get_input_value('_uploadid', rcube_utils::INPUT_GPC);
1077
1078 if (!is_array($_SESSION[$session_key]) || $_SESSION[$session_key]['id'] != $recid) {
1079 $_SESSION[$session_key] = array();
1080 $_SESSION[$session_key]['id'] = $recid;
1081 $_SESSION[$session_key]['attachments'] = array();
1082 }
1083
1084 // clear all stored output properties (like scripts and env vars)
1085 $this->rc->output->reset();
1086
1087 if (is_array($_FILES['_attachments']['tmp_name'])) {
1088 foreach ($_FILES['_attachments']['tmp_name'] as $i => $filepath) {
1089 // Process uploaded attachment if there is no error
1090 $err = $_FILES['_attachments']['error'][$i];
1091
1092 if (!$err) {
1093 $attachment = array(
1094 'path' => $filepath,
1095 'size' => $_FILES['_attachments']['size'][$i],
1096 'name' => $_FILES['_attachments']['name'][$i],
1097 'mimetype' => rcube_mime::file_content_type($filepath, $_FILES['_attachments']['name'][$i], $_FILES['_attachments']['type'][$i]),
1098 'group' => $recid,
1099 );
1100
1101 $attachment = $this->rc->plugins->exec_hook('attachment_upload', $attachment);
1102 }
1103
1104 if (!$err && $attachment['status'] && !$attachment['abort']) {
1105 $id = $attachment['id'];
1106
1107 // store new attachment in session
1108 unset($attachment['status'], $attachment['abort']);
1109 $_SESSION[$session_key]['attachments'][$id] = $attachment;
1110
1111 if (($icon = $_SESSION[$session_key . '_deleteicon']) && is_file($icon)) {
1112 $button = html::img(array(
1113 'src' => $icon,
1114 'alt' => $this->rc->gettext('delete')
1115 ));
1116 }
1117 else {
1118 $button = rcube::Q($this->rc->gettext('delete'));
1119 }
1120
1121 $content = html::a(array(
1122 'href' => "#delete",
1123 'class' => 'delete',
1124 'onclick' => sprintf("return %s.remove_from_attachment_list('rcmfile%s')", rcmail_output::JS_OBJECT_NAME, $id),
1125 'title' => $this->rc->gettext('delete'),
1126 'aria-label' => $this->rc->gettext('delete') . ' ' . $attachment['name'],
1127 ), $button);
1128
1129 $content .= rcube::Q($attachment['name']);
1130
1131 $this->rc->output->command('add2attachment_list', "rcmfile$id", array(
1132 'html' => $content,
1133 'name' => $attachment['name'],
1134 'mimetype' => $attachment['mimetype'],
1135 'classname' => rcube_utils::file2class($attachment['mimetype'], $attachment['name']),
1136 'complete' => true), $uploadid);
1137 }
1138 else { // upload failed
1139 if ($err == UPLOAD_ERR_INI_SIZE || $err == UPLOAD_ERR_FORM_SIZE) {
1140 $msg = $this->rc->gettext(array('name' => 'filesizeerror', 'vars' => array(
1141 'size' => $this->rc->show_bytes(parse_bytes(ini_get('upload_max_filesize'))))));
1142 }
1143 else if ($attachment['error']) {
1144 $msg = $attachment['error'];
1145 }
1146 else {
1147 $msg = $this->rc->gettext('fileuploaderror');
1148 }
1149
1150 $this->rc->output->command('display_message', $msg, 'error');
1151 $this->rc->output->command('remove_from_attachment_list', $uploadid);
1152 }
1153 }
1154 }
1155 else if ($_SERVER['REQUEST_METHOD'] == 'POST') {
1156 // if filesize exceeds post_max_size then $_FILES array is empty,
1157 // show filesizeerror instead of fileuploaderror
1158 if ($maxsize = ini_get('post_max_size'))
1159 $msg = $this->rc->gettext(array('name' => 'filesizeerror', 'vars' => array(
1160 'size' => $this->rc->show_bytes(parse_bytes($maxsize)))));
1161 else
1162 $msg = $this->rc->gettext('fileuploaderror');
1163
1164 $this->rc->output->command('display_message', $msg, 'error');
1165 $this->rc->output->command('remove_from_attachment_list', $uploadid);
1166 }
1167
1168 $this->rc->output->send('iframe');
1169 }
1170
1171
1172 /**
1173 * Deliver an event/task attachment to the client
1174 * (similar as in Roundcube core program/steps/mail/get.inc)
1175 */
1176 public function attachment_get($attachment)
1177 {
1178 ob_end_clean();
1179
1180 if ($attachment && $attachment['body']) {
1181 // allow post-processing of the attachment body
1182 $part = new rcube_message_part;
1183 $part->filename = $attachment['name'];
1184 $part->size = $attachment['size'];
1185 $part->mimetype = $attachment['mimetype'];
1186
1187 $plugin = $this->rc->plugins->exec_hook('message_part_get', array(
1188 'body' => $attachment['body'],
1189 'mimetype' => strtolower($attachment['mimetype']),
1190 'download' => !empty($_GET['_download']),
1191 'part' => $part,
1192 ));
1193
1194 if ($plugin['abort'])
1195 exit;
1196
1197 $mimetype = $plugin['mimetype'];
1198 list($ctype_primary, $ctype_secondary) = explode('/', $mimetype);
1199
1200 $browser = $this->rc->output->browser;
1201
1202 // send download headers
1203 if ($plugin['download']) {
1204 header("Content-Type: application/octet-stream");
1205 if ($browser->ie)
1206 header("Content-Type: application/force-download");
1207 }
1208 else if ($ctype_primary == 'text') {
1209 header("Content-Type: text/$ctype_secondary");
1210 }
1211 else {
1212 header("Content-Type: $mimetype");
1213 header("Content-Transfer-Encoding: binary");
1214 }
1215
1216 // display page, @TODO: support text/plain (and maybe some other text formats)
1217 if ($mimetype == 'text/html' && empty($_GET['_download'])) {
1218 $OUTPUT = new rcmail_html_page();
1219 // @TODO: use washtml on $body
1220 $OUTPUT->write($plugin['body']);
1221 }
1222 else {
1223 // don't kill the connection if download takes more than 30 sec.
1224 @set_time_limit(0);
1225
1226 $filename = $attachment['name'];
1227 $filename = preg_replace('[\r\n]', '', $filename);
1228
1229 if ($browser->ie && $browser->ver < 7)
1230 $filename = rawurlencode(abbreviate_string($filename, 55));
1231 else if ($browser->ie)
1232 $filename = rawurlencode($filename);
1233 else
1234 $filename = addcslashes($filename, '"');
1235
1236 $disposition = !empty($_GET['_download']) ? 'attachment' : 'inline';
1237 header("Content-Disposition: $disposition; filename=\"$filename\"");
1238
1239 echo $plugin['body'];
1240 }
1241
1242 exit;
1243 }
1244
1245 // if we arrive here, the requested part was not found
1246 header('HTTP/1.1 404 Not Found');
1247 exit;
1248 }
1249
1250 /**
1251 * Show "loading..." page in attachment iframe
1252 */
1253 public function attachment_loading_page()
1254 {
1255 $url = str_replace('&_preload=1', '', $_SERVER['REQUEST_URI']);
1256 $message = $this->rc->gettext('loadingdata');
1257
1258 header('Content-Type: text/html; charset=' . RCUBE_CHARSET);
1259 print "<html>\n<head>\n"
1260 . '<meta http-equiv="refresh" content="0; url='.rcube::Q($url).'">' . "\n"
1261 . '<meta http-equiv="content-type" content="text/html; charset='.RCUBE_CHARSET.'">' . "\n"
1262 . "</head>\n<body>\n$message\n</body>\n</html>";
1263 exit;
1264 }
1265
1266 /**
1267 * Template object for attachment display frame
1268 */
1269 public function attachment_frame($attrib = array())
1270 {
1271 $mimetype = strtolower($this->attachment['mimetype']);
1272 list($ctype_primary, $ctype_secondary) = explode('/', $mimetype);
1273
1274 $attrib['src'] = './?' . str_replace('_frame=', ($ctype_primary == 'text' ? '_show=' : '_preload='), $_SERVER['QUERY_STRING']);
1275
1276 $this->rc->output->add_gui_object('attachmentframe', $attrib['id']);
1277
1278 return html::iframe($attrib);
1279 }
1280
1281 /**
1282 *
1283 */
1284 public function attachment_header($attrib = array())
1285 {
1286 $rcmail = rcmail::get_instance();
1287 $dl_link = strtolower($attrib['downloadlink']) == 'true';
1288 $dl_url = $this->rc->url(array('_frame' => null, '_download' => 1) + $_GET);
1289
1290 $table = new html_table(array('cols' => $dl_link ? 3 : 2));
1291
1292 if (!empty($this->attachment['name'])) {
1293 $table->add('title', rcube::Q($this->rc->gettext('filename')));
1294 $table->add('header', rcube::Q($this->attachment['name']));
1295 if ($dl_link) {
1296 $table->add('download-link', html::a($dl_url, rcube::Q($this->rc->gettext('download'))));
1297 }
1298 }
1299
1300 if (!empty($this->attachment['mimetype'])) {
1301 $table->add('title', rcube::Q($this->rc->gettext('type')));
1302 $table->add('header', rcube::Q($this->attachment['mimetype']));
1303 }
1304
1305 if (!empty($this->attachment['size'])) {
1306 $table->add('title', rcube::Q($this->rc->gettext('filesize')));
1307 $table->add('header', rcube::Q($this->rc->show_bytes($this->attachment['size'])));
1308 }
1309
1310 $this->rc->output->set_env('attachment_download_url', $dl_url);
1311
1312 return $table->show($attrib);
1313 }
1314
1315
1316 /********* iTip message detection *********/
1317
1318 /**
1319 * Check mail message structure of there are .ics files attached
1320 */
1321 public function mail_message_load($p)
1322 {
1323 $this->ical_message = $p['object'];
1324 $itip_part = null;
1325
1326 // check all message parts for .ics files
1327 foreach ((array)$this->ical_message->mime_parts as $part) {
1328 if (self::part_is_vcalendar($part, $this->ical_message)) {
1329 if ($part->ctype_parameters['method'])
1330 $itip_part = $part->mime_id;
1331 else
1332 $this->ical_parts[] = $part->mime_id;
1333 }
1334 }
1335
1336 // priorize part with method parameter
1337 if ($itip_part) {
1338 $this->ical_parts = array($itip_part);
1339 }
1340 }
1341
1342 /**
1343 * Getter for the parsed iCal objects attached to the current email message
1344 *
1345 * @return object libvcalendar parser instance with the parsed objects
1346 */
1347 public function get_mail_ical_objects()
1348 {
1349 // create parser and load ical objects
1350 if (!$this->mail_ical_parser) {
1351 $this->mail_ical_parser = $this->get_ical();
1352
1353 foreach ($this->ical_parts as $mime_id) {
1354 $part = $this->ical_message->mime_parts[$mime_id];
1355 $charset = $part->ctype_parameters['charset'] ?: RCUBE_CHARSET;
1356 $this->mail_ical_parser->import($this->ical_message->get_part_body($mime_id, true), $charset);
1357
1358 // check if the parsed object is an instance of a recurring event/task
1359 array_walk($this->mail_ical_parser->objects, 'libcalendaring::identify_recurrence_instance');
1360
1361 // stop on the part that has an iTip method specified
1362 if (count($this->mail_ical_parser->objects) && $this->mail_ical_parser->method) {
1363 $this->mail_ical_parser->message_date = $this->ical_message->headers->date;
1364 $this->mail_ical_parser->mime_id = $mime_id;
1365
1366 // store the message's sender address for comparisons
1367 $from = rcube_mime::decode_address_list($this->ical_message->headers->from, 1, true, null, true);
1368 $this->mail_ical_parser->sender = !empty($from) ? $from[1] : '';
1369
1370 if (!empty($this->mail_ical_parser->sender)) {
1371 foreach ($this->mail_ical_parser->objects as $i => $object) {
1372 $this->mail_ical_parser->objects[$i]['_sender'] = $this->mail_ical_parser->sender;
1373 $this->mail_ical_parser->objects[$i]['_sender_utf'] = rcube_utils::idn_to_utf8($this->mail_ical_parser->sender);
1374 }
1375 }
1376
1377 break;
1378 }
1379 }
1380 }
1381
1382 return $this->mail_ical_parser;
1383 }
1384
1385 /**
1386 * Read the given mime message from IMAP and parse ical data
1387 *
1388 * @param string Mailbox name
1389 * @param string Message UID
1390 * @param string Message part ID and object index (e.g. '1.2:0')
1391 * @param string Object type filter (optional)
1392 *
1393 * @return array Hash array with the parsed iCal
1394 */
1395 public function mail_get_itip_object($mbox, $uid, $mime_id, $type = null)
1396 {
1397 $charset = RCUBE_CHARSET;
1398
1399 // establish imap connection
1400 $imap = $this->rc->get_storage();
1401 $imap->set_folder($mbox);
1402
1403 if ($uid && $mime_id) {
1404 list($mime_id, $index) = explode(':', $mime_id);
1405
1406 $part = $imap->get_message_part($uid, $mime_id);
1407 $headers = $imap->get_message_headers($uid);
1408 $parser = $this->get_ical();
1409
1410 if ($part->ctype_parameters['charset']) {
1411 $charset = $part->ctype_parameters['charset'];
1412 }
1413
1414 if ($part) {
1415 $objects = $parser->import($part, $charset);
1416 }
1417 }
1418
1419 // successfully parsed events/tasks?
1420 if (!empty($objects) && ($object = $objects[$index]) && (!$type || $object['_type'] == $type)) {
1421 if ($parser->method)
1422 $object['_method'] = $parser->method;
1423
1424 // store the message's sender address for comparisons
1425 $from = rcube_mime::decode_address_list($headers->from, 1, true, null, true);
1426 $object['_sender'] = !empty($from) ? $from[1] : '';
1427 $object['_sender_utf'] = rcube_utils::idn_to_utf8($object['_sender']);
1428
1429 // check if this is an instance of a recurring event/task
1430 self::identify_recurrence_instance($object);
1431
1432 return $object;
1433 }
1434
1435 return null;
1436 }
1437
1438 /**
1439 * Checks if specified message part is a vcalendar data
1440 *
1441 * @param rcube_message_part Part object
1442 * @param rcube_message Message object
1443 *
1444 * @return boolean True if part is of type vcard
1445 */
1446 public static function part_is_vcalendar($part, $message = null)
1447 {
1448 // First check if the message is "valid" (i.e. not multipart/report)
1449 if ($message) {
1450 $level = explode('.', $part->mime_id);
1451
1452 while (array_pop($level) !== null) {
1453 $parent = $message->mime_parts[join('.', $level) ?: 0];
1454 if ($parent->mimetype == 'multipart/report') {
1455 return false;
1456 }
1457 }
1458 }
1459
1460 return (
1461 in_array($part->mimetype, array('text/calendar', 'text/x-vcalendar', 'application/ics')) ||
1462 // Apple sends files as application/x-any (!?)
1463 ($part->mimetype == 'application/x-any' && $part->filename && preg_match('/\.ics$/i', $part->filename))
1464 );
1465 }
1466
1467 /**
1468 * Single occourrences of recurring events are identified by their RECURRENCE-ID property
1469 * in iCal which is represented as 'recurrence_date' in our internal data structure.
1470 *
1471 * Check if such a property exists and derive the '_instance' identifier and '_savemode'
1472 * attributes which are used in the storage backend to identify the nested exception item.
1473 */
1474 public static function identify_recurrence_instance(&$object)
1475 {
1476 // for savemode=all, remove recurrence instance identifiers
1477 if (!empty($object['_savemode']) && $object['_savemode'] == 'all' && $object['recurrence']) {
1478 unset($object['_instance'], $object['recurrence_date']);
1479 }
1480 // set instance and 'savemode' according to recurrence-id
1481 else if (!empty($object['recurrence_date']) && is_a($object['recurrence_date'], 'DateTime')) {
1482 $object['_instance'] = self::recurrence_instance_identifier($object);
1483 $object['_savemode'] = $object['thisandfuture'] ? 'future' : 'current';
1484 }
1485 else if (!empty($object['recurrence_id']) && !empty($object['_instance'])) {
1486 if (strlen($object['_instance']) > 4) {
1487 $object['recurrence_date'] = rcube_utils::anytodatetime($object['_instance'], $object['start']->getTimezone());
1488 }
1489 else {
1490 $object['recurrence_date'] = clone $object['start'];
1491 }
1492 }
1493 }
1494
1495 /**
1496 * Return a date() format string to render identifiers for recurrence instances
1497 *
1498 * @param array Hash array with event properties
1499 * @return string Format string
1500 */
1501 public static function recurrence_id_format($event)
1502 {
1503 return $event['allday'] ? 'Ymd' : 'Ymd\THis';
1504 }
1505
1506 /**
1507 * Return the identifer for the given instance of a recurring event
1508 *
1509 * @param array Hash array with event properties
1510 * @param bool All-day flag from the main event
1511 *
1512 * @return mixed Format string or null if identifier cannot be generated
1513 */
1514 public static function recurrence_instance_identifier($event, $allday = null)
1515 {
1516 $instance_date = $event['recurrence_date'] ?: $event['start'];
1517
1518 if ($instance_date && is_a($instance_date, 'DateTime')) {
1519 // According to RFC5545 (3.8.4.4) RECURRENCE-ID format should
1520 // be date/date-time depending on the main event type, not the exception
1521 if ($allday === null) {
1522 $allday = $event['allday'];
1523 }
1524
1525 return $instance_date->format($allday ? 'Ymd' : 'Ymd\THis');
1526 }
1527 }
1528
1529
1530 /********* Attendee handling functions *********/
1531
1532 /**
1533 * Handler for attendee group expansion requests
1534 */
1535 public function expand_attendee_group()
1536 {
1537 $id = rcube_utils::get_input_value('id', rcube_utils::INPUT_POST);
1538 $data = rcube_utils::get_input_value('data', rcube_utils::INPUT_POST, true);
1539 $result = array('id' => $id, 'members' => array());
1540 $maxnum = 500;
1541
1542 // iterate over all autocomplete address books (we don't know the source of the group)
1543 foreach ((array)$this->rc->config->get('autocomplete_addressbooks', 'sql') as $abook_id) {
1544 if (($abook = $this->rc->get_address_book($abook_id)) && $abook->groups) {
1545 foreach ($abook->list_groups($data['name'], 1) as $group) {
1546 // this is the matching group to expand
1547 if (in_array($data['email'], (array)$group['email'])) {
1548 $abook->set_pagesize($maxnum);
1549 $abook->set_group($group['ID']);
1550
1551 // get all members
1552 $res = $abook->list_records($this->rc->config->get('contactlist_fields'));
1553
1554 // handle errors (e.g. sizelimit, timelimit)
1555 if ($abook->get_error()) {
1556 $result['error'] = $this->rc->gettext('expandattendeegrouperror', 'libcalendaring');
1557 $res = false;
1558 }
1559 // check for maximum number of members (we don't wanna bloat the UI too much)
1560 else if ($res->count > $maxnum) {
1561 $result['error'] = $this->rc->gettext('expandattendeegroupsizelimit', 'libcalendaring');
1562 $res = false;
1563 }
1564
1565 while ($res && ($member = $res->iterate())) {
1566 $emails = (array)$abook->get_col_values('email', $member, true);
1567 if (!empty($emails) && ($email = array_shift($emails))) {
1568 $result['members'][] = array(
1569 'email' => $email,
1570 'name' => rcube_addressbook::compose_list_name($member),
1571 );
1572 }
1573 }
1574
1575 break 2;
1576 }
1577 }
1578 }
1579 }
1580
1581 $this->rc->output->command('plugin.expand_attendee_callback', $result);
1582 }
1583
1584 /**
1585 * Merge attendees of the old and new event version
1586 * with keeping current user and his delegatees status
1587 *
1588 * @param array &$new New object data
1589 * @param array $old Old object data
1590 * @param bool $status New status of the current user
1591 */
1592 public function merge_attendees(&$new, $old, $status = null)
1593 {
1594 if (empty($status)) {
1595 $emails = $this->get_user_emails();
1596 $delegates = array();
1597 $attendees = array();
1598
1599 // keep attendee status of the current user
1600 foreach ((array) $new['attendees'] as $i => $attendee) {
1601 if (empty($attendee['email'])) {
1602 continue;
1603 }
1604
1605 $attendees[] = $email = strtolower($attendee['email']);
1606
1607 if (in_array($email, $emails)) {
1608 foreach ($old['attendees'] as $_attendee) {
1609 if ($attendee['email'] == $_attendee['email']) {
1610 $new['attendees'][$i] = $_attendee;
1611 if ($_attendee['status'] == 'DELEGATED' && ($email = $_attendee['delegated-to'])) {
1612 $delegates[] = strtolower($email);
1613 }
1614
1615 break;
1616 }
1617 }
1618 }
1619 }
1620
1621 // make sure delegated attendee is not lost
1622 foreach ($delegates as $delegatee) {
1623 if (!in_array($delegatee, $attendees)) {
1624 foreach ((array) $old['attendees'] as $attendee) {
1625 if ($attendee['email'] && ($email = strtolower($attendee['email'])) && $email == $delegatee) {
1626 $new['attendees'][] = $attendee;
1627 break;
1628 }
1629 }
1630 }
1631 }
1632 }
1633
1634 // We also make sure that status of any attendee
1635 // is not overriden by NEEDS-ACTION if it was already set
1636 // which could happen if you work with shared events
1637 foreach ((array) $new['attendees'] as $i => $attendee) {
1638 if ($attendee['email'] && $attendee['status'] == 'NEEDS-ACTION') {
1639 foreach ($old['attendees'] as $_attendee) {
1640 if ($attendee['email'] == $_attendee['email']) {
1641 $new['attendees'][$i]['status'] = $_attendee['status'];
1642 unset($new['attendees'][$i]['rsvp']);
1643 break;
1644 }
1645 }
1646 }
1647 }
1648 }
1649
1650
1651 /********* Static utility functions *********/
1652
1653 /**
1654 * Convert the internal structured data into a vcalendar rrule 2.0 string
1655 */
1656 public static function to_rrule($recurrence, $allday = false)
1657 {
1658 if (is_string($recurrence))
1659 return $recurrence;
1660
1661 $rrule = '';
1662 foreach ((array)$recurrence as $k => $val) {
1663 $k = strtoupper($k);
1664 switch ($k) {
1665 case 'UNTIL':
1666 // convert to UTC according to RFC 5545
1667 if (is_a($val, 'DateTime')) {
1668 if (!$allday && !$val->_dateonly) {
1669 $until = clone $val;
1670 $until->setTimezone(new DateTimeZone('UTC'));
1671 $val = $until->format('Ymd\THis\Z');
1672 }
1673 else {
1674 $val = $val->format('Ymd');
1675 }
1676 }
1677 break;
1678 case 'RDATE':
1679 case 'EXDATE':
1680 foreach ((array)$val as $i => $ex) {
1681 if (is_a($ex, 'DateTime'))
1682 $val[$i] = $ex->format('Ymd\THis');
1683 }
1684 $val = join(',', (array)$val);
1685 break;
1686 case 'EXCEPTIONS':
1687 continue 2;
1688 }
1689
1690 if (strlen($val))
1691 $rrule .= $k . '=' . $val . ';';
1692 }
1693
1694 return rtrim($rrule, ';');
1695 }
1696
1697 /**
1698 * Convert from fullcalendar date format to PHP date() format string
1699 */
1700 public static function to_php_date_format($from)
1701 {
1702 // "dd.MM.yyyy HH:mm:ss" => "d.m.Y H:i:s"
1703 return strtr(strtr($from, array(
1704 'YYYY' => 'Y',
1705 'YY' => 'y',
1706 'yyyy' => 'Y',
1707 'yy' => 'y',
1708 'MMMM' => 'F',
1709 'MMM' => 'M',
1710 'MM' => 'm',
1711 'M' => 'n',
1712 'dddd' => 'l',
1713 'ddd' => 'D',
1714 'dd' => 'd',
1715 'd' => 'j',
1716 'HH' => '**',
1717 'hh' => '%%',
1718 'H' => 'G',
1719 'h' => 'g',
1720 'mm' => 'i',
1721 'ss' => 's',
1722 'TT' => 'A',
1723 'tt' => 'a',
1724 'T' => 'A',
1725 't' => 'a',
1726 'u' => 'c',
1727 )), array(
1728 '**' => 'H',
1729 '%%' => 'h',
1730 ));
1731 }
1732
1733 /**
1734 * Convert from PHP date() format to fullcalendar format string
1735 */
1736 public static function from_php_date_format($from)
1737 {
1738 // "d.m.Y H:i:s" => "dd.MM.yyyy HH:mm:ss"
1739 return strtr($from, array(
1740 'y' => 'yy',
1741 'Y' => 'yyyy',
1742 'M' => 'MMM',
1743 'F' => 'MMMM',
1744 'm' => 'MM',
1745 'n' => 'M',
1746 'j' => 'd',
1747 'd' => 'dd',
1748 'D' => 'ddd',
1749 'l' => 'dddd',
1750 'H' => 'HH',
1751 'h' => 'hh',
1752 'G' => 'H',
1753 'g' => 'h',
1754 'i' => 'mm',
1755 's' => 'ss',
1756 'A' => 'TT',
1757 'a' => 'tt',
1758 'c' => 'u',
1759 ));
1760 }
1761
1762 }