1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
|
<?php
namespace Sabre\CalDAV;
use Sabre\DAV;
use Sabre\DAVACL;
use Sabre\DAV\PropPatch;
/**
* This object represents a CalDAV calendar.
*
* A calendar can contain multiple TODO and or Events. These are represented
* as \Sabre\CalDAV\CalendarObject objects.
*
* @copyright Copyright (C) fruux GmbH (https://fruux.com/)
* @author Evert Pot (http://evertpot.com/)
* @license http://sabre.io/license/ Modified BSD License
*/
class Calendar implements ICalendar, DAV\IProperties, DAV\Sync\ISyncCollection, DAV\IMultiGet {
/**
* This is an array with calendar information
*
* @var array
*/
protected $calendarInfo;
/**
* CalDAV backend
*
* @var Backend\BackendInterface
*/
protected $caldavBackend;
/**
* Constructor
*
* @param Backend\BackendInterface $caldavBackend
* @param array $calendarInfo
*/
function __construct(Backend\BackendInterface $caldavBackend, $calendarInfo) {
$this->caldavBackend = $caldavBackend;
$this->calendarInfo = $calendarInfo;
}
/**
* Returns the name of the calendar
*
* @return string
*/
function getName() {
return $this->calendarInfo['uri'];
}
/**
* Updates properties on this node.
*
* This method received a PropPatch object, which contains all the
* information about the update.
*
* To update specific properties, call the 'handle' method on this object.
* Read the PropPatch documentation for more information.
*
* @param PropPatch $propPatch
* @return void
*/
function propPatch(PropPatch $propPatch) {
return $this->caldavBackend->updateCalendar($this->calendarInfo['id'], $propPatch);
}
/**
* Returns the list of properties
*
* @param array $requestedProperties
* @return array
*/
function getProperties($requestedProperties) {
$response = [];
foreach ($this->calendarInfo as $propName => $propValue) {
if ($propName[0] === '{')
$response[$propName] = $this->calendarInfo[$propName];
}
return $response;
}
/**
* Returns a calendar object
*
* The contained calendar objects are for example Events or Todo's.
*
* @param string $name
* @return \Sabre\CalDAV\ICalendarObject
*/
function getChild($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj) throw new DAV\Exception\NotFound('Calendar object not found');
$obj['acl'] = $this->getChildACL();
return new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
/**
* Returns the full list of calendar objects
*
* @return array
*/
function getChildren() {
$objs = $this->caldavBackend->getCalendarObjects($this->calendarInfo['id']);
$children = [];
foreach ($objs as $obj) {
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
/**
* This method receives a list of paths in it's first argument.
* It must return an array with Node objects.
*
* If any children are not found, you do not have to return them.
*
* @param string[] $paths
* @return array
*/
function getMultipleChildren(array $paths) {
$objs = $this->caldavBackend->getMultipleCalendarObjects($this->calendarInfo['id'], $paths);
$children = [];
foreach ($objs as $obj) {
$obj['acl'] = $this->getChildACL();
$children[] = new CalendarObject($this->caldavBackend, $this->calendarInfo, $obj);
}
return $children;
}
/**
* Checks if a child-node exists.
*
* @param string $name
* @return bool
*/
function childExists($name) {
$obj = $this->caldavBackend->getCalendarObject($this->calendarInfo['id'], $name);
if (!$obj)
return false;
else
return true;
}
/**
* Creates a new directory
*
* We actually block this, as subdirectories are not allowed in calendars.
*
* @param string $name
* @return void
*/
function createDirectory($name) {
throw new DAV\Exception\MethodNotAllowed('Creating collections in calendar objects is not allowed');
}
/**
* Creates a new file
*
* The contents of the new file must be a valid ICalendar string.
*
* @param string $name
* @param resource $calendarData
* @return string|null
*/
function createFile($name, $calendarData = null) {
if (is_resource($calendarData)) {
$calendarData = stream_get_contents($calendarData);
}
return $this->caldavBackend->createCalendarObject($this->calendarInfo['id'], $name, $calendarData);
}
/**
* Deletes the calendar.
*
* @return void
*/
function delete() {
$this->caldavBackend->deleteCalendar($this->calendarInfo['id']);
}
/**
* Renames the calendar. Note that most calendars use the
* {DAV:}displayname to display a name to display a name.
*
* @param string $newName
* @return void
*/
function setName($newName) {
throw new DAV\Exception\MethodNotAllowed('Renaming calendars is not yet supported');
}
/**
* Returns the last modification date as a unix timestamp.
*
* @return void
*/
function getLastModified() {
return null;
}
/**
* Returns the owner principal
*
* This must be a url to a principal, or null if there's no owner
*
* @return string|null
*/
function getOwner() {
return $this->calendarInfo['principaluri'];
}
/**
* Returns a group principal
*
* This must be a url to a principal, or null if there's no owner
*
* @return string|null
*/
function getGroup() {
return null;
}
/**
* Returns a list of ACE's for this node.
*
* Each ACE has the following properties:
* * 'privilege', a string such as {DAV:}read or {DAV:}write. These are
* currently the only supported privileges
* * 'principal', a url to the principal who owns the node
* * 'protected' (optional), indicating that this ACE is not allowed to
* be updated.
*
* @return array
*/
function getACL() {
$acl = [
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner(),
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-read',
'protected' => true,
],
[
'privilege' => '{' . Plugin::NS_CALDAV . '}read-free-busy',
'principal' => '{DAV:}authenticated',
'protected' => true,
],
];
if (empty($this->calendarInfo['{http://sabredav.org/ns}read-only'])) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner(),
'protected' => true,
];
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
];
}
return $acl;
}
/**
* This method returns the ACL's for calendar objects in this calendar.
* The result of this method automatically gets passed to the
* calendar-object nodes in the calendar.
*
* @return array
*/
function getChildACL() {
$acl = [
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner(),
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
],
[
'privilege' => '{DAV:}read',
'principal' => $this->getOwner() . '/calendar-proxy-read',
'protected' => true,
],
];
if (empty($this->calendarInfo['{http://sabredav.org/ns}read-only'])) {
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner(),
'protected' => true,
];
$acl[] = [
'privilege' => '{DAV:}write',
'principal' => $this->getOwner() . '/calendar-proxy-write',
'protected' => true,
];
}
return $acl;
}
/**
* Updates the ACL
*
* This method will receive a list of new ACE's.
*
* @param array $acl
* @return void
*/
function setACL(array $acl) {
throw new DAV\Exception\MethodNotAllowed('Changing ACL is not yet supported');
}
/**
* Returns the list of supported privileges for this node.
*
* The returned data structure is a list of nested privileges.
* See \Sabre\DAVACL\Plugin::getDefaultSupportedPrivilegeSet for a simple
* standard structure.
*
* If null is returned from this method, the default privilege set is used,
* which is fine for most common usecases.
*
* @return array|null
*/
function getSupportedPrivilegeSet() {
$default = DAVACL\Plugin::getDefaultSupportedPrivilegeSet();
// We need to inject 'read-free-busy' in the tree, aggregated under
// {DAV:}read.
foreach ($default['aggregates'] as &$agg) {
if ($agg['privilege'] !== '{DAV:}read') continue;
$agg['aggregates'][] = [
'privilege' => '{' . Plugin::NS_CALDAV . '}read-free-busy',
];
}
return $default;
}
/**
* Performs a calendar-query on the contents of this calendar.
*
* The calendar-query is defined in RFC4791 : CalDAV. Using the
* calendar-query it is possible for a client to request a specific set of
* object, based on contents of iCalendar properties, date-ranges and
* iCalendar component types (VTODO, VEVENT).
*
* This method should just return a list of (relative) urls that match this
* query.
*
* The list of filters are specified as an array. The exact array is
* documented by Sabre\CalDAV\CalendarQueryParser.
*
* @param array $filters
* @return array
*/
function calendarQuery(array $filters) {
return $this->caldavBackend->calendarQuery($this->calendarInfo['id'], $filters);
}
/**
* This method returns the current sync-token for this collection.
* This can be any string.
*
* If null is returned from this function, the plugin assumes there's no
* sync information available.
*
* @return string|null
*/
function getSyncToken() {
if (
$this->caldavBackend instanceof Backend\SyncSupport &&
isset($this->calendarInfo['{DAV:}sync-token'])
) {
return $this->calendarInfo['{DAV:}sync-token'];
}
if (
$this->caldavBackend instanceof Backend\SyncSupport &&
isset($this->calendarInfo['{http://sabredav.org/ns}sync-token'])
) {
return $this->calendarInfo['{http://sabredav.org/ns}sync-token'];
}
}
/**
* The getChanges method returns all the changes that have happened, since
* the specified syncToken and the current collection.
*
* This function should return an array, such as the following:
*
* [
* 'syncToken' => 'The current synctoken',
* 'added' => [
* 'new.txt',
* ],
* 'modified' => [
* 'modified.txt',
* ],
* 'deleted' => [
* 'foo.php.bak',
* 'old.txt'
* ]
* ];
*
* The syncToken property should reflect the *current* syncToken of the
* collection, as reported getSyncToken(). This is needed here too, to
* ensure the operation is atomic.
*
* If the syncToken is specified as null, this is an initial sync, and all
* members should be reported.
*
* The modified property is an array of nodenames that have changed since
* the last token.
*
* The deleted property is an array with nodenames, that have been deleted
* from collection.
*
* The second argument is basically the 'depth' of the report. If it's 1,
* you only have to report changes that happened only directly in immediate
* descendants. If it's 2, it should also include changes from the nodes
* below the child collections. (grandchildren)
*
* The third (optional) argument allows a client to specify how many
* results should be returned at most. If the limit is not specified, it
* should be treated as infinite.
*
* If the limit (infinite or not) is higher than you're willing to return,
* you should throw a Sabre\DAV\Exception\TooMuchMatches() exception.
*
* If the syncToken is expired (due to data cleanup) or unknown, you must
* return null.
*
* The limit is 'suggestive'. You are free to ignore it.
*
* @param string $syncToken
* @param int $syncLevel
* @param int $limit
* @return array
*/
function getChanges($syncToken, $syncLevel, $limit = null) {
if (!$this->caldavBackend instanceof Backend\SyncSupport) {
return null;
}
return $this->caldavBackend->getChangesForCalendar(
$this->calendarInfo['id'],
$syncToken,
$syncLevel,
$limit
);
}
}
|