friendlist.c 18.4 KB
Newer Older
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
/*
linphone
Copyright (C) 2010-2015 Belledonne Communications SARL

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
*/

#include "linphonecore.h"
#include "private.h"

23
#include <polarssl/md5.h>
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
static char * create_resource_list_xml(const LinphoneFriendList *list) {
	char *xml_content = NULL;
	MSList *elem;
	xmlBufferPtr buf;
	xmlTextWriterPtr writer;
	int err;

	if (ms_list_size(list->friends) <= 0) return NULL;

	buf = xmlBufferCreate();
	if (buf == NULL) {
		ms_error("%s: Error creating the XML buffer", __FUNCTION__);
		return NULL;
	}
	writer = xmlNewTextWriterMemory(buf, 0);
	if (writer == NULL) {
		ms_error("%s: Error creating the XML writer", __FUNCTION__);
		return NULL;
	}

	xmlTextWriterSetIndent(writer,1);
	err = xmlTextWriterStartDocument(writer, "1.0", "UTF-8", NULL);
	if (err >= 0) {
		err = xmlTextWriterStartElementNS(writer, NULL, (const xmlChar *)"resource-lists", (const xmlChar *)"urn:ietf:params:xml:ns:resource-lists");
	}
	if (err >= 0) {
		err = xmlTextWriterWriteAttributeNS(writer, (const xmlChar *)"xmlns", (const xmlChar *)"xsi",
						    NULL, (const xmlChar *)"http://www.w3.org/2001/XMLSchema-instance");
	}

	if (err>= 0) {
		err = xmlTextWriterStartElement(writer, (const xmlChar *)"list");
	}
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		char *uri = linphone_address_as_string_uri_only(friend->uri);
		if (err >= 0) {
			err = xmlTextWriterStartElement(writer, (const xmlChar *)"entry");
		}
		if (err >= 0) {
			err = xmlTextWriterWriteAttribute(writer, (const xmlChar *)"uri", (const xmlChar *)uri);
		}
		if (err >= 0) {
			/* Close the "entry" element. */
			err = xmlTextWriterEndElement(writer);
		}
Ghislain MARY's avatar
Ghislain MARY committed
72
		if (uri) ms_free(uri);
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
	}
	if (err >= 0) {
		/* Close the "list" element. */
		err = xmlTextWriterEndElement(writer);
	}

	if (err >= 0) {
		/* Close the "resource-lists" element. */
		err = xmlTextWriterEndElement(writer);
	}
	if (err >= 0) {
		err = xmlTextWriterEndDocument(writer);
	}
	if (err > 0) {
		/* xmlTextWriterEndDocument returns the size of the content. */
		xml_content = ms_strdup((char *)buf->content);
	}
	xmlFreeTextWriter(writer);
	xmlBufferFree(buf);

	return xml_content;
}

96
97
98
99
100
101
102
103
104
static void linphone_friend_list_parse_multipart_related_body(LinphoneFriendList *list, const LinphoneContent *body, const char *first_part_body) {
	xmlparsing_context_t *xml_ctx = linphone_xmlparsing_context_new();
	xmlSetGenericErrorFunc(xml_ctx, linphone_xmlparsing_genericxml_error);
	xml_ctx->doc = xmlReadDoc((const unsigned char*)first_part_body, 0, NULL, 0);
	if (xml_ctx->doc != NULL) {
		char xpath_str[MAX_XPATH_LENGTH];
		LinphoneFriend *friend;
		LinphoneContent *presence_part;
		xmlXPathObjectPtr resource_object;
105
106
		const char *version_str = NULL;
		const char *full_state_str = NULL;
107
		const char *uri = NULL;
108
109
		bool_t full_state = FALSE;
		int version;
110
111
112
113
		int i;

		if (linphone_create_xml_xpath_context(xml_ctx) < 0) goto end;
		xmlXPathRegisterNs(xml_ctx->xpath_ctx, (const xmlChar *)"rlmi", (const xmlChar *)"urn:ietf:params:xml:ns:rlmi");
114
115
116
117
118
119
120

		version_str = linphone_get_xml_attribute_text_content(xml_ctx, "/rlmi:list", "version");
		if (version_str == NULL) {
			ms_warning("rlmi+xml: No version attribute in list");
			goto end;
		}
		version = atoi(version_str);
Ghislain MARY's avatar
Ghislain MARY committed
121
		linphone_free_xml_text_content(version_str);
122
123
		if (version < list->expected_notification_version) {
			ms_warning("rlmi+xml: Discarding received notification with version %d because %d was expected", version, list->expected_notification_version);
124
			linphone_friend_list_update_subscriptions(list, NULL, FALSE); /* Refresh subscription to get new full state notify. */
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
			goto end;
		}

		full_state_str = linphone_get_xml_attribute_text_content(xml_ctx, "/rlmi:list", "fullState");
		if (full_state_str == NULL) {
			ms_warning("rlmi+xml: No fullState attribute in list");
			goto end;
		}
		if ((strcmp(full_state_str, "true") == 0) || (strcmp(full_state_str, "1") == 0)) {
			MSList *l = list->friends;
			for (; l != NULL; l = l->next) {
				friend = (LinphoneFriend *)l->data;
				linphone_friend_set_presence_model(friend, NULL);
			}
			full_state = TRUE;
		}
		linphone_free_xml_text_content(full_state_str);
		if ((list->expected_notification_version == 0) && (full_state == FALSE)) {
			ms_warning("rlmi+xml: Notification with version 0 is not full state, this is not valid");
			goto end;
		}
		list->expected_notification_version = version + 1;

148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
		resource_object = linphone_get_xml_xpath_object_for_node_list(xml_ctx, "/rlmi:list/rlmi:resource");
		if ((resource_object != NULL) && (resource_object->nodesetval != NULL)) {
			for (i = 1; i <= resource_object->nodesetval->nodeNr; i++) {
				snprintf(xpath_str, sizeof(xpath_str), "/rlmi:list/rlmi:resource[%i]/@uri", i);
				uri = linphone_get_xml_text_content(xml_ctx, xpath_str);
				if (uri == NULL) continue;
				friend = linphone_friend_list_find_friend_by_uri(list, uri);
				if (friend != NULL) {
					const char *state = NULL;
					snprintf(xpath_str, sizeof(xpath_str),"/rlmi:list/rlmi:resource[%i]/rlmi:instance/@state", i);
					state = linphone_get_xml_text_content(xml_ctx, xpath_str);
					if ((state != NULL) && (strcmp(state, "active") == 0)) {
						const char *cid = NULL;
						snprintf(xpath_str, sizeof(xpath_str),"/rlmi:list/rlmi:resource[%i]/rlmi:instance/@cid", i);
						cid = linphone_get_xml_text_content(xml_ctx, xpath_str);
						if (cid != NULL) {
							presence_part = linphone_content_find_part_by_header(body, "Content-Id", cid);
							if (presence_part == NULL) {
								ms_warning("rlmi+xml: Cannot find part with Content-Id: %s", cid);
							} else {
								SalPresenceModel *presence = NULL;
								linphone_notify_parse_presence(linphone_content_get_type(presence_part), linphone_content_get_subtype(presence_part), linphone_content_get_string_buffer(presence_part), &presence);
								if (presence != NULL) {
171
									friend->presence_received = TRUE;
172
									linphone_friend_set_presence_model(friend, (LinphonePresenceModel *)presence);
173
174
175
									if (full_state == FALSE) {
										linphone_core_notify_notify_presence_received(list->lc, friend);
									}
176
								}
Ghislain MARY's avatar
Ghislain MARY committed
177
								linphone_content_unref(presence_part);
178
179
180
181
182
							}
						}
						if (cid != NULL) linphone_free_xml_text_content(cid);
					}
					if (state != NULL) linphone_free_xml_text_content(state);
183
					friend->subscribe_active = TRUE;
184
185
186
187
188
				}
				linphone_free_xml_text_content(uri);
			}
		}
		if (resource_object != NULL) xmlXPathFreeObject(resource_object);
189
190
191
192
193
194
195
196
197
198

		if (full_state == TRUE) {
			MSList *l = list->friends;
			for (; l != NULL; l = l->next) {
				friend = (LinphoneFriend *)l->data;
				if (linphone_friend_is_presence_received(friend) == TRUE) {
					linphone_core_notify_notify_presence_received(list->lc, friend);
				}
			}
		}
199
200
201
202
203
204
205
206
	} else {
		ms_warning("Wrongly formatted rlmi+xml body: %s", xml_ctx->errorBuffer);
	}

end:
	linphone_xmlparsing_context_destroy(xml_ctx);
}

207
208
209
210
211
212
213
214
215
216
217
218
219
static bool_t linphone_friend_list_has_subscribe_inactive(const LinphoneFriendList *list) {
	MSList *l = list->friends;
	bool_t has_subscribe_inactive = FALSE;
	for (; l != NULL; l = l->next) {
		LinphoneFriend *friend = (LinphoneFriend *)l->data;
		if (friend->subscribe_active != TRUE) {
			has_subscribe_inactive = TRUE;
			break;
		}
	}
	return has_subscribe_inactive;
}

220
221
222
223
224
225
static LinphoneFriendList * linphone_friend_list_new(void) {
	LinphoneFriendList *list = belle_sip_object_new(LinphoneFriendList);
	belle_sip_object_ref(list);
	return list;
}

226
227
228
static void linphone_friend_list_destroy(LinphoneFriendList *list) {
	if (list->display_name != NULL) ms_free(list->display_name);
	if (list->rls_uri != NULL) ms_free(list->rls_uri);
229
	if (list->content_digest != NULL) ms_free(list->content_digest);
230
	if (list->event != NULL) linphone_event_unref(list->event);
231
	list->friends = ms_list_free_with_data(list->friends, (void (*)(void *))linphone_friend_unref);
232
233
234
235
236
237
238
239
240
241
242
243
}

BELLE_SIP_DECLARE_NO_IMPLEMENTED_INTERFACES(LinphoneFriendList);

BELLE_SIP_INSTANCIATE_VPTR(LinphoneFriendList, belle_sip_object_t,
	(belle_sip_object_destroy_t)linphone_friend_list_destroy,
	NULL, // clone
	NULL, // marshal
	TRUE
);


244
245
246
LinphoneFriendList * linphone_core_create_friend_list(LinphoneCore *lc) {
	LinphoneFriendList *list = linphone_friend_list_new();
	list->lc = lc;
247
248
249
250
251
252
253
254
	return list;
}

LinphoneFriendList * linphone_friend_list_ref(LinphoneFriendList *list) {
	belle_sip_object_ref(list);
	return list;
}

255
256
257
void _linphone_friend_list_release(LinphoneFriendList *list){
	/*drops all references to core and unref*/
	list->lc = NULL;
Simon Morlat's avatar
Simon Morlat committed
258
259
260
261
	if (list->event != NULL) {
		linphone_event_unref(list->event);
		list->event = NULL;
	}
262
263
264
265
	list->friends = ms_list_free_with_data(list->friends, (void (*)(void *))_linphone_friend_release);
	belle_sip_object_unref(list);
}

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
void linphone_friend_list_unref(LinphoneFriendList *list) {
	belle_sip_object_unref(list);
}

void * linphone_friend_list_get_user_data(const LinphoneFriendList *list) {
	return list->user_data;
}

void linphone_friend_list_set_user_data(LinphoneFriendList *list, void *ud) {
	list->user_data = ud;
}

const char * linphone_friend_list_get_display_name(const LinphoneFriendList *list) {
	return list->display_name;
}

void linphone_friend_list_set_display_name(LinphoneFriendList *list, const char *display_name) {
	if (list->display_name != NULL) {
		ms_free(list->display_name);
		list->display_name = NULL;
	}
	if (display_name != NULL) {
		list->display_name = ms_strdup(display_name);
	}
}

const char * linphone_friend_list_get_rls_uri(const LinphoneFriendList *list) {
	return list->rls_uri;
}

void linphone_friend_list_set_rls_uri(LinphoneFriendList *list, const char *rls_uri) {
	if (list->rls_uri != NULL) {
		ms_free(list->rls_uri);
		list->rls_uri = NULL;
	}
	if (rls_uri != NULL) {
		list->rls_uri = ms_strdup(rls_uri);
	}
}

LinphoneFriendListStatus linphone_friend_list_add_friend(LinphoneFriendList *list, LinphoneFriend *friend) {
Simon Morlat's avatar
Simon Morlat committed
307
	if (friend->uri == NULL || friend->in_list) {
308
309
310
311
		if (!friend->uri)
			ms_error("linphone_friend_list_add_friend(): invalid friend, no sip uri");
		if (friend->in_list)
			ms_error("linphone_friend_list_add_friend(): invalid friend, already in list");
Simon Morlat's avatar
Simon Morlat committed
312
313
		return LinphoneFriendListInvalidFriend;
	}
314
315
316
317
318
319
320
	if (ms_list_find(list->friends, friend) != NULL) {
		char *tmp = NULL;
		const LinphoneAddress *addr = linphone_friend_get_address(friend);
		if (addr) tmp = linphone_address_as_string(addr);
		ms_warning("Friend %s already in list [%s], ignored.", tmp ? tmp : "unknown", list->display_name);
		if (tmp) ms_free(tmp);
	} else {
Simon Morlat's avatar
Simon Morlat committed
321
		friend->in_list = TRUE;
322
323
324
325
326
327
		list->friends = ms_list_append(list->friends, linphone_friend_ref(friend));
	}
	return LinphoneFriendListOK;
}

LinphoneFriendListStatus linphone_friend_list_remove_friend(LinphoneFriendList *list, LinphoneFriend *friend) {
328
329
	MSList *elem = ms_list_find(list->friends, friend);
	if (elem == NULL) return LinphoneFriendListNonExistentFriend;
Simon Morlat's avatar
Simon Morlat committed
330
331
	friend->in_list = FALSE;
	linphone_friend_unref(friend);
332
	list->friends = ms_list_remove_link(list->friends, elem);
333
334
	return LinphoneFriendListOK;
}
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

LinphoneFriend * linphone_friend_list_find_friend_by_address(const LinphoneFriendList *list, const LinphoneAddress *address) {
	LinphoneFriend *friend = NULL;
	const MSList *elem;
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		friend = (LinphoneFriend *)elem->data;
		if (linphone_address_weak_equal(friend->uri, address))
			return friend;
	}
	return NULL;
}

LinphoneFriend * linphone_friend_list_find_friend_by_uri(const LinphoneFriendList *list, const char *uri) {
	LinphoneAddress *address = linphone_address_new(uri);
	LinphoneFriend *friend = address ? linphone_friend_list_find_friend_by_address(list, address) : NULL;
	if (address) linphone_address_unref(address);
	return friend;
}

LinphoneFriend * linphone_friend_list_find_friend_by_ref_key(const LinphoneFriendList *list, const char *ref_key) {
	const MSList *elem;
	if (ref_key == NULL) return NULL;
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		if ((friend->refkey != NULL) && (strcmp(friend->refkey, ref_key) == 0)) return friend;
	}
	return NULL;
}

LinphoneFriend * linphone_friend_list_find_friend_by_inc_subscribe(const LinphoneFriendList *list, SalOp *op) {
	const MSList *elem;
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		if (ms_list_find(friend->insubs, op)) return friend;
	}
	return NULL;
}

LinphoneFriend * linphone_friend_list_find_friend_by_out_subscribe(const LinphoneFriendList *list, SalOp *op) {
	const MSList *elem;
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		if (friend->outsub && ((friend->outsub == op) || sal_op_is_forked_of(friend->outsub, op))) return friend;
	}
	return NULL;
}

void linphone_friend_list_close_subscriptions(LinphoneFriendList *list) {
	 /* FIXME we should wait until subscription to complete. */
	if (list->friends)
		ms_list_for_each(list->friends, (void (*)(void *))linphone_friend_close_subscriptions);
}

void linphone_friend_list_update_subscriptions(LinphoneFriendList *list, LinphoneProxyConfig *cfg, bool_t only_when_registered) {
	const MSList *elem;
390
	if (list->rls_uri != NULL) {
391
392
		LinphoneAddress *address = linphone_address_new(list->rls_uri);
		char *xml_content = create_resource_list_xml(list);
393
		if ((address != NULL) && (xml_content != NULL) && (linphone_friend_list_has_subscribe_inactive(list) == TRUE)) {
394
			unsigned char digest[16];
395
			md5((unsigned char *)xml_content, strlen(xml_content), digest);
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
			if ((list->event != NULL) && (list->content_digest != NULL) && (memcmp(list->content_digest, digest, sizeof(digest)) == 0)) {
				/* The content has not changed, only refresh the event. */
				linphone_event_refresh_subscribe(list->event);
			} else {
				LinphoneContent *content;
				int expires = lp_config_get_int(list->lc->config, "sip", "rls_presence_expires", 3600);
				list->expected_notification_version = 0;
				if (list->content_digest != NULL) ms_free(list->content_digest);
				list->content_digest = ms_malloc(sizeof(digest));
				memcpy(list->content_digest, digest, sizeof(digest));
				if (list->event != NULL) {
					linphone_event_terminate(list->event);
					linphone_event_unref(list->event);
				}
				list->event = linphone_core_create_subscribe(list->lc, address, "presence", expires);
				linphone_event_set_internal(list->event, TRUE);
				linphone_event_add_custom_header(list->event, "Require", "recipient-list-subscribe");
				linphone_event_add_custom_header(list->event, "Supported", "eventlist");
				linphone_event_add_custom_header(list->event, "Accept", "multipart/related, application/pidf+xml, application/rlmi+xml");
				linphone_event_add_custom_header(list->event, "Content-Disposition", "recipient-list");
				content = linphone_core_create_content(list->lc);
				linphone_content_set_type(content, "application");
				linphone_content_set_subtype(content, "resource-lists+xml");
				linphone_content_set_string_buffer(content, xml_content);
				linphone_event_send_subscribe(list->event, content);
				linphone_content_unref(content);
422
				linphone_event_set_user_data(list->event, list);
423
			}
424
425
426
427
428
429
430
431
		}
		if (address != NULL) linphone_address_unref(address);
		if (xml_content != NULL) ms_free(xml_content);
	} else {
		for (elem = list->friends; elem != NULL; elem = elem->next) {
			LinphoneFriend *friend = (LinphoneFriend *)elem->data;
			linphone_friend_update_subscribes(friend, cfg, only_when_registered);
		}
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
	}
}

void linphone_friend_list_invalidate_subscriptions(LinphoneFriendList *list) {
	const MSList *elem;
	for (elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		linphone_friend_invalidate_subscription(friend);
	}
}

void linphone_friend_list_notify_presence(LinphoneFriendList *list, LinphonePresenceModel *presence) {
	const MSList *elem;
	for(elem = list->friends; elem != NULL; elem = elem->next) {
		LinphoneFriend *friend = (LinphoneFriend *)elem->data;
		linphone_friend_notify(friend, presence);
	}
}
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471

void linphone_friend_list_notify_presence_received(LinphoneFriendList *list, LinphoneEvent *lev, const LinphoneContent *body) {
	if (linphone_content_is_multipart(body)) {
		LinphoneContent *first_part;
		const char *type = linphone_content_get_type(body);
		const char *subtype = linphone_content_get_subtype(body);

		if ((strcmp(type, "multipart") != 0) || (strcmp(subtype, "related") != 0)) {
			ms_warning("multipart presence notified but it is not 'multipart/related'");
			return;
		}

		first_part = linphone_content_get_part(body, 0);
		if (first_part == NULL) {
			ms_warning("'multipart/related' presence notified but it doesn't contain any part");
			return;
		}

		type = linphone_content_get_type(first_part);
		subtype = linphone_content_get_subtype(first_part);
		if ((strcmp(type, "application") != 0) || (strcmp(subtype, "rlmi+xml") != 0)) {
			ms_warning("multipart presence notified but first part is not 'application/rlmi+xml'");
Ghislain MARY's avatar
Ghislain MARY committed
472
			linphone_content_unref(first_part);
473
474
475
476
			return;
		}

		linphone_friend_list_parse_multipart_related_body(list, body, linphone_content_get_string_buffer(first_part));
Ghislain MARY's avatar
Ghislain MARY committed
477
		linphone_content_unref(first_part);
478
479
	}
}
480
481
482
483
484
485
486
487
488
489
490
491
void linphone_friend_list_subscription_state_changed(LinphoneCore *lc, LinphoneEvent *lev, LinphoneSubscriptionState state) {
	LinphoneFriendList *list = (LinphoneFriendList *)linphone_event_get_user_data(lev);
	if (!list) {
		ms_warning("core [%p] Receiving unexpected state [%s] for event [%p], no associated friend list",lc
					, linphone_subscription_state_to_string(state)
				   , lev);
	} else {
		ms_message("Receiving new state [%s] for event [%p] for friend list [%p]"
				   , linphone_subscription_state_to_string(state)
				   , lev
				   , list);
		
492
		if (state == LinphoneSubscriptionOutgoingProgress && linphone_event_get_reason(lev) == LinphoneReasonNoMatch) {
493
494
495
496
497
			ms_message("Resseting version count for friend list [%p]",list);
			list->expected_notification_version = 0;
		}
	}
}