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
|
<?php
namespace Sabre\CalDAV;
use Sabre\VObject;
/**
* Parses the calendar-query report request body.
*
* Whoever designed this format, and the CalDAV equivalent even more so,
* has no feel for design.
*
* @copyright Copyright (C) 2007-2014 fruux GmbH (https://fruux.com/).
* @author Evert Pot (http://evertpot.com/)
* @license http://code.google.com/p/sabredav/wiki/License Modified BSD License
*/
class CalendarQueryParser {
/**
* List of requested properties the client wanted
*
* @var array
*/
public $requestedProperties;
/**
* List of property/component filters.
*
* @var array
*/
public $filters;
/**
* This property will contain null if CALDAV:expand was not specified,
* otherwise it will contain an array with 2 elements (start, end). Each
* contain a DateTime object.
*
* If expand is specified, recurring calendar objects are to be expanded
* into their individual components, and only the components that fall
* within the specified time-range are to be returned.
*
* For more details, see rfc4791, section 9.6.5.
*
* @var null|array
*/
public $expand;
/**
* DOM Document
*
* @var DOMDocument
*/
protected $dom;
/**
* DOM XPath object
*
* @var DOMXPath
*/
protected $xpath;
/**
* Creates the parser
*
* @param \DOMDocument $dom
*/
public function __construct(\DOMDocument $dom) {
$this->dom = $dom;
$this->xpath = new \DOMXPath($dom);
$this->xpath->registerNameSpace('cal',Plugin::NS_CALDAV);
$this->xpath->registerNameSpace('dav','urn:DAV');
}
/**
* Parses the request.
*
* @return void
*/
public function parse() {
$filterNode = null;
$filter = $this->xpath->query('/cal:calendar-query/cal:filter');
if ($filter->length !== 1) {
throw new \Sabre\DAV\Exception\BadRequest('Only one filter element is allowed');
}
$compFilters = $this->parseCompFilters($filter->item(0));
if (count($compFilters)!==1) {
throw new \Sabre\DAV\Exception\BadRequest('There must be exactly 1 top-level comp-filter.');
}
$this->filters = $compFilters[0];
$this->requestedProperties = array_keys(\Sabre\DAV\XMLUtil::parseProperties($this->dom->firstChild));
$expand = $this->xpath->query('/cal:calendar-query/dav:prop/cal:calendar-data/cal:expand');
if ($expand->length>0) {
$this->expand = $this->parseExpand($expand->item(0));
}
}
/**
* Parses all the 'comp-filter' elements from a node
*
* @param \DOMElement $parentNode
* @return array
*/
protected function parseCompFilters(\DOMElement $parentNode) {
$compFilterNodes = $this->xpath->query('cal:comp-filter', $parentNode);
$result = array();
for($ii=0; $ii < $compFilterNodes->length; $ii++) {
$compFilterNode = $compFilterNodes->item($ii);
$compFilter = array();
$compFilter['name'] = $compFilterNode->getAttribute('name');
$compFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $compFilterNode)->length>0;
$compFilter['comp-filters'] = $this->parseCompFilters($compFilterNode);
$compFilter['prop-filters'] = $this->parsePropFilters($compFilterNode);
$compFilter['time-range'] = $this->parseTimeRange($compFilterNode);
if ($compFilter['time-range'] && !in_array($compFilter['name'],array(
'VEVENT',
'VTODO',
'VJOURNAL',
'VFREEBUSY',
'VALARM',
))) {
throw new \Sabre\DAV\Exception\BadRequest('The time-range filter is not defined for the ' . $compFilter['name'] . ' component');
};
$result[] = $compFilter;
}
return $result;
}
/**
* Parses all the prop-filter elements from a node
*
* @param \DOMElement $parentNode
* @return array
*/
protected function parsePropFilters(\DOMElement $parentNode) {
$propFilterNodes = $this->xpath->query('cal:prop-filter', $parentNode);
$result = array();
for ($ii=0; $ii < $propFilterNodes->length; $ii++) {
$propFilterNode = $propFilterNodes->item($ii);
$propFilter = array();
$propFilter['name'] = $propFilterNode->getAttribute('name');
$propFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $propFilterNode)->length>0;
$propFilter['param-filters'] = $this->parseParamFilters($propFilterNode);
$propFilter['text-match'] = $this->parseTextMatch($propFilterNode);
$propFilter['time-range'] = $this->parseTimeRange($propFilterNode);
$result[] = $propFilter;
}
return $result;
}
/**
* Parses the param-filter element
*
* @param \DOMElement $parentNode
* @return array
*/
protected function parseParamFilters(\DOMElement $parentNode) {
$paramFilterNodes = $this->xpath->query('cal:param-filter', $parentNode);
$result = array();
for($ii=0;$ii<$paramFilterNodes->length;$ii++) {
$paramFilterNode = $paramFilterNodes->item($ii);
$paramFilter = array();
$paramFilter['name'] = $paramFilterNode->getAttribute('name');
$paramFilter['is-not-defined'] = $this->xpath->query('cal:is-not-defined', $paramFilterNode)->length>0;
$paramFilter['text-match'] = $this->parseTextMatch($paramFilterNode);
$result[] = $paramFilter;
}
return $result;
}
/**
* Parses the text-match element
*
* @param \DOMElement $parentNode
* @return array|null
*/
protected function parseTextMatch(\DOMElement $parentNode) {
$textMatchNodes = $this->xpath->query('cal:text-match', $parentNode);
if ($textMatchNodes->length === 0)
return null;
$textMatchNode = $textMatchNodes->item(0);
$negateCondition = $textMatchNode->getAttribute('negate-condition');
$negateCondition = $negateCondition==='yes';
$collation = $textMatchNode->getAttribute('collation');
if (!$collation) $collation = 'i;ascii-casemap';
return array(
'negate-condition' => $negateCondition,
'collation' => $collation,
'value' => $textMatchNode->nodeValue
);
}
/**
* Parses the time-range element
*
* @param \DOMElement $parentNode
* @return array|null
*/
protected function parseTimeRange(\DOMElement $parentNode) {
$timeRangeNodes = $this->xpath->query('cal:time-range', $parentNode);
if ($timeRangeNodes->length === 0) {
return null;
}
$timeRangeNode = $timeRangeNodes->item(0);
if ($start = $timeRangeNode->getAttribute('start')) {
$start = VObject\DateTimeParser::parseDateTime($start);
} else {
$start = null;
}
if ($end = $timeRangeNode->getAttribute('end')) {
$end = VObject\DateTimeParser::parseDateTime($end);
} else {
$end = null;
}
if (!is_null($start) && !is_null($end) && $end <= $start) {
throw new \Sabre\DAV\Exception\BadRequest('The end-date must be larger than the start-date in the time-range filter');
}
return array(
'start' => $start,
'end' => $end,
);
}
/**
* Parses the CALDAV:expand element
*
* @param \DOMElement $parentNode
* @return void
*/
protected function parseExpand(\DOMElement $parentNode) {
$start = $parentNode->getAttribute('start');
if(!$start) {
throw new \Sabre\DAV\Exception\BadRequest('The "start" attribute is required for the CALDAV:expand element');
}
$start = VObject\DateTimeParser::parseDateTime($start);
$end = $parentNode->getAttribute('end');
if(!$end) {
throw new \Sabre\DAV\Exception\BadRequest('The "end" attribute is required for the CALDAV:expand element');
}
$end = VObject\DateTimeParser::parseDateTime($end);
if ($end <= $start) {
throw new \Sabre\DAV\Exception\BadRequest('The end-date must be larger than the start-date in the expand element.');
}
return array(
'start' => $start,
'end' => $end,
);
}
}
|
