friendlist.c 16 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 23 24
/*
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"



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
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
71
		if (uri) ms_free(uri);
72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94
	}
	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;
}

95 96 97 98 99 100 101 102 103
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;
104 105
		const char *version_str = NULL;
		const char *full_state_str = NULL;
106
		const char *uri = NULL;
107 108
		bool_t full_state = FALSE;
		int version;
109 110 111 112
		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");
113 114 115 116 117 118 119

		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
120
		linphone_free_xml_text_content(version_str);
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
		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);
			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;

146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168
		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) {
169
									friend->presence_received = TRUE;
170
									linphone_friend_set_presence_model(friend, (LinphonePresenceModel *)presence);
171 172 173
									if (full_state == FALSE) {
										linphone_core_notify_notify_presence_received(list->lc, friend);
									}
174
								}
Ghislain MARY's avatar
Ghislain MARY committed
175
								linphone_content_unref(presence_part);
176 177 178 179 180
							}
						}
						if (cid != NULL) linphone_free_xml_text_content(cid);
					}
					if (state != NULL) linphone_free_xml_text_content(state);
181
					friend->subscribe_active = TRUE;
182 183 184 185 186
				}
				linphone_free_xml_text_content(uri);
			}
		}
		if (resource_object != NULL) xmlXPathFreeObject(resource_object);
187 188 189 190 191 192 193 194 195 196

		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);
				}
			}
		}
197 198 199 200 201 202 203 204
	} else {
		ms_warning("Wrongly formatted rlmi+xml body: %s", xml_ctx->errorBuffer);
	}

end:
	linphone_xmlparsing_context_destroy(xml_ctx);
}

205 206 207 208 209 210 211 212 213 214 215 216 217
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;
}

218 219 220 221 222 223
static LinphoneFriendList * linphone_friend_list_new(void) {
	LinphoneFriendList *list = belle_sip_object_new(LinphoneFriendList);
	belle_sip_object_ref(list);
	return list;
}

224 225 226
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);
227
	list->friends = ms_list_free_with_data(list->friends, (void (*)(void *))linphone_friend_unref);
228 229 230 231 232 233 234 235 236 237 238 239
}

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
);


240 241 242
LinphoneFriendList * linphone_core_create_friend_list(LinphoneCore *lc) {
	LinphoneFriendList *list = linphone_friend_list_new();
	list->lc = lc;
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
	return list;
}

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

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) {
	if ((friend->lc != NULL) || (friend->uri == NULL)) return LinphoneFriendListInvalidFriend;
	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 {
		list->friends = ms_list_append(list->friends, linphone_friend_ref(friend));
	}
	return LinphoneFriendListOK;
}

LinphoneFriendListStatus linphone_friend_list_remove_friend(LinphoneFriendList *list, LinphoneFriend *friend) {
306 307 308 309
	MSList *elem = ms_list_find(list->friends, friend);
	if (elem == NULL) return LinphoneFriendListNonExistentFriend;
	linphone_friend_unref((LinphoneFriend *)elem->data);
	list->friends = ms_list_remove_link(list->friends, elem);
310 311
	return LinphoneFriendListOK;
}
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

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;
367 368 369
	if (list->rls_uri != NULL) {
		LinphoneAddress *address = linphone_address_new(list->rls_uri);
		char *xml_content = create_resource_list_xml(list);
370
		if ((address != NULL) && (xml_content != NULL) && (linphone_friend_list_has_subscribe_inactive(list) == TRUE)) {
371 372 373
			LinphoneEvent *event;
			LinphoneContent *content;
			int expires = lp_config_get_int(list->lc->config, "sip", "rls_presence_expires", 3600);
374
			list->expected_notification_version = 0;
375 376
			event = linphone_core_create_subscribe(list->lc, address, "presence", expires);
			linphone_event_add_custom_header(event, "Require", "recipient-list-subscribe");
377
			linphone_event_add_custom_header(event, "Supported", "eventlist");
378 379 380 381 382 383 384
			linphone_event_add_custom_header(event, "Accept", "multipart/related, application/pidf+xml, application/rlmi+xml");
			linphone_event_add_custom_header(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(event, content);
Ghislain MARY's avatar
Ghislain MARY committed
385
			linphone_content_unref(content);
386 387 388 389 390 391 392 393
		}
		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);
		}
394 395 396 397 398 399 400 401 402 403 404 405 406 407 408 409 410 411
	}
}

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);
	}
}
412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433

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
434
			linphone_content_unref(first_part);
435 436 437 438
			return;
		}

		linphone_friend_list_parse_multipart_related_body(list, body, linphone_content_get_string_buffer(first_part));
Ghislain MARY's avatar
Ghislain MARY committed
439
		linphone_content_unref(first_part);
440 441
	}
}