Asterisk - The Open Source Telephony Project GIT-master-2de1a68
res_pjsip_diversion.c
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1/*
2 * Asterisk -- An open source telephony toolkit.
3 *
4 * Copyright (C) 2013, Digium, Inc.
5 *
6 * Kevin Harwell <kharwell@digium.com>
7 *
8 * See http://www.asterisk.org for more information about
9 * the Asterisk project. Please do not directly contact
10 * any of the maintainers of this project for assistance;
11 * the project provides a web site, mailing lists and IRC
12 * channels for your use.
13 *
14 * This program is free software, distributed under the terms of
15 * the GNU General Public License Version 2. See the LICENSE file
16 * at the top of the source tree.
17 */
18
19/*** MODULEINFO
20 <depend>pjproject</depend>
21 <depend>res_pjsip</depend>
22 <depend>res_pjsip_session</depend>
23 <support_level>core</support_level>
24 ***/
25
26#include "asterisk.h"
27
28#include <pjsip.h>
29#include <pjsip_ua.h>
30
31#include "asterisk/res_pjsip.h"
33#include "asterisk/callerid.h"
34#include "asterisk/channel.h"
35#include "asterisk/module.h"
36#include "asterisk/strings.h"
37
38static const pj_str_t diversion_name = { "Diversion", 9 };
39static const pj_str_t history_info_name = { "History-Info", 12 };
40static pj_str_t HISTINFO_SUPPORTED_NAME = { "histinfo", 8 };
41
42/*!
43 * \internal
44 * \brief Determine if the given string is a SIP token.
45 * \since 13.8.0
46 *
47 * \param str String to determine if is a SIP token.
48 *
49 * \note A token is defined by RFC3261 Section 25.1
50 *
51 * \return Non-zero if the string is a SIP token.
52 */
53static int sip_is_token(const char *str)
54{
55 int is_token;
56
57 if (ast_strlen_zero(str)) {
58 /* An empty string is not a token. */
59 return 0;
60 }
61
62 is_token = 1;
63 do {
64 if (!isalnum(*str)
65 && !strchr("-.!%*_+`'~", *str)) {
66 /* The character is not allowed in a token. */
67 is_token = 0;
68 break;
69 }
70 } while (*++str);
71
72 return is_token;
73}
74
75/*! \brief Diversion header reasons
76 *
77 * The core defines a bunch of constants used to define
78 * redirecting reasons. This provides a translation table
79 * between those and the strings which may be present in
80 * a SIP Diversion header
81 */
82static const struct reasons {
84 const char *text;
85 const unsigned int cause;
86} reason_table[] = {
87 { AST_REDIRECTING_REASON_UNKNOWN, "unknown", 404 },
88 { AST_REDIRECTING_REASON_USER_BUSY, "user-busy", 486 },
89 { AST_REDIRECTING_REASON_NO_ANSWER, "no-answer", 408 },
90 { AST_REDIRECTING_REASON_UNAVAILABLE, "unavailable", 503 },
91 { AST_REDIRECTING_REASON_UNCONDITIONAL, "unconditional", 302 },
92 { AST_REDIRECTING_REASON_TIME_OF_DAY, "time-of-day", 404 },
93 { AST_REDIRECTING_REASON_DO_NOT_DISTURB, "do-not-disturb", 404 },
94 { AST_REDIRECTING_REASON_DEFLECTION, "deflection", 480 },
95 { AST_REDIRECTING_REASON_FOLLOW_ME, "follow-me", 404 },
96 { AST_REDIRECTING_REASON_OUT_OF_ORDER, "out-of-service", 404 },
97 { AST_REDIRECTING_REASON_AWAY, "away", 404 },
98 { AST_REDIRECTING_REASON_CALL_FWD_DTE, "cf_dte", 404 }, /* Non-standard */
99 { AST_REDIRECTING_REASON_SEND_TO_VM, "send_to_vm", 404 }, /* Non-standard */
101
102static enum AST_REDIRECTING_REASON cause_to_reason(const unsigned long cause) {
103 switch(cause) {
104 case 302:
106 case 486:
108 case 408:
110 case 480:
111 case 487:
113 case 503:
115 default:
117 }
118}
119
120static int add_supported(pjsip_tx_data *tdata)
121{
122 pjsip_supported_hdr *hdr;
123 unsigned int i;
124
125 hdr = pjsip_msg_find_hdr(tdata->msg, PJSIP_H_SUPPORTED, NULL);
126 if (!hdr) {
127 /* insert a new Supported header */
128 hdr = pjsip_supported_hdr_create(tdata->pool);
129 if (!hdr) {
130 return -1;
131 }
132
133 pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
134 }
135
136 /* Asterisk can send multiple "181 Call forwarded" in a single session,
137 * we might have already modified Supported before
138 */
139 for (i = 0; i < hdr->count; ++i) {
140 if (pj_stricmp(&hdr->values[i], &HISTINFO_SUPPORTED_NAME) == 0) {
141 return 0;
142 }
143 }
144
145 if (hdr->count >= PJSIP_GENERIC_ARRAY_MAX_COUNT) {
146 return -1;
147 }
148
149 /* add on to the existing Supported header */
150 pj_strassign(&hdr->values[hdr->count++], &HISTINFO_SUPPORTED_NAME);
151
152 return 0;
153}
154
155static const char *reason_code_to_str(const struct ast_party_redirecting_reason *reason)
156{
157 int idx;
158 int code;
159
160 /* use specific string if given */
161 if (!ast_strlen_zero(reason->str)) {
162 return reason->str;
163 }
164
165 code = reason->code;
166 for (idx = 0; idx < ARRAY_LEN(reason_table); ++idx) {
167 if (code == reason_table[idx].code) {
168 return reason_table[idx].text;
169 }
170 }
171
172 return "unknown";
173}
174
175static const unsigned int reason_code_to_cause(const struct ast_party_redirecting_reason *reason)
176{
177 int idx;
178 int code;
179
180 code = reason->code;
181 for (idx = 0; idx < ARRAY_LEN(reason_table); ++idx) {
182 if (code == reason_table[idx].code) {
183 return reason_table[idx].cause;
184 }
185 }
186
187 return 404;
188}
189
190static pjsip_fromto_hdr *get_diversion_header(pjsip_rx_data *rdata)
191{
192 static const pj_str_t from_name = { "From", 4 };
193
194 pjsip_generic_string_hdr *hdr;
195 pj_str_t value;
196 int size;
197
198 if (!(hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &diversion_name, NULL))) {
199 return NULL;
200 }
201
202 pj_strdup_with_null(rdata->tp_info.pool, &value, &hdr->hvalue);
203
204 /* parse as a fromto header */
205 return pjsip_parse_hdr(rdata->tp_info.pool, &from_name, value.ptr,
206 pj_strlen(&value), &size);
207}
208
209/* Asterisk keeps track of 2 things. The redirected from address and
210 * the redirected to address. If first=0 method will get the most recent
211 * redirection target for use as the redirected to address. If first=1
212 * then this method will get the original redirection target (index=1)
213 * for use as the redirected from address.
214 */
215static pjsip_fromto_hdr *get_history_info_header(pjsip_rx_data *rdata, const unsigned int first)
216{
217 static const pj_str_t from_name = { "From", 4 };
218 pjsip_fromto_hdr * result_hdr = NULL;
219
220 pjsip_generic_string_hdr *hdr = NULL;
221
222 hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &history_info_name, NULL);
223
224 if (!hdr) {
225 return NULL;
226 }
227
228 do {
229 static const pj_str_t index_name = { "index", 5 };
230 pj_str_t value;
231 int size;
232 pjsip_fromto_hdr * fromto_hdr = NULL;
233 pjsip_param * index = NULL;
234
235 pj_strdup_with_null(rdata->tp_info.pool, &value, &hdr->hvalue);
236
237 /* parse as a fromto header */
238 fromto_hdr = pjsip_parse_hdr(rdata->tp_info.pool, &from_name, value.ptr,
239 pj_strlen(&value), &size);
240
241 if (fromto_hdr == NULL) {
242 continue;
243 }
244
245 index = pjsip_param_find(&fromto_hdr->other_param, &index_name);
246
247 if (index) {
248 if (!pj_strcmp2(&index->value, "1")) {
249 if (!first) {
250 continue;
251 } else {
252 return fromto_hdr;
253 }
254 }
255 }
256
257 result_hdr = fromto_hdr;
258
259 } while ((hdr = pjsip_msg_find_hdr_by_name(rdata->msg_info.msg, &history_info_name, hdr->next)));
260
261 return result_hdr;
262}
263
264static void set_redirecting_value(char **dst, const pj_str_t *src)
265{
266 ast_free(*dst);
267 *dst = ast_malloc(pj_strlen(src) + 1);
268 if (*dst) {
269 ast_copy_pj_str(*dst, src, pj_strlen(src) + 1);
270 }
271}
272
273static void set_redirecting_id(pjsip_name_addr *name_addr, struct ast_party_id *data,
274 struct ast_set_party_id *update)
275{
276 pjsip_sip_uri *uri = pjsip_uri_get_uri(name_addr->uri);
277 char *semi;
278 pj_str_t uri_user;
279
280 uri_user = uri->user;
281
282 /* Always truncate redirecting number at a semicolon. */
283 semi = pj_strchr(&uri_user, ';');
284 if (semi) {
285 /*
286 * We need to be able to handle URI's looking like
287 * "sip:1235557890;phone-context=national@x.x.x.x;user=phone"
288 *
289 * Where the uri->user field will result in:
290 * "1235557890;phone-context=national"
291 *
292 * People don't care about anything after the semicolon
293 * showing up on their displays even though the RFC
294 * allows the semicolon.
295 */
296 pj_strset(&uri_user, (char *) pj_strbuf(&uri_user), semi - pj_strbuf(&uri_user));
297 }
298
299 if (pj_strlen(&uri_user)) {
300 update->number = 1;
301 data->number.valid = 1;
302 set_redirecting_value(&data->number.str, &uri_user);
303 }
304
305 if (pj_strlen(&name_addr->display)) {
306 update->name = 1;
307 data->name.valid = 1;
308 set_redirecting_value(&data->name.str, &name_addr->display);
309 }
310}
311
312static void copy_redirecting_id(struct ast_party_id *dst, const struct ast_party_id *src,
313 struct ast_set_party_id *update)
314{
315 ast_party_id_copy(dst, src);
316
317 if (dst->number.valid) {
318 update->number = 1;
319 }
320
321 if (dst->name.valid) {
322 update->name = 1;
323 }
324}
325
326static void set_redirecting_reason_by_cause(pjsip_name_addr *name_addr,
327 struct ast_party_redirecting_reason *data)
328{
329 static const pj_str_t cause_name = { "cause", 5 };
330 pjsip_uri *uri = name_addr->uri;
331 pjsip_param *cause = NULL;
332 unsigned long cause_value = 0;
333
334 if (!ast_sip_is_allowed_uri(uri)) {
335 return;
336 }
337
338 cause = ast_sip_pjsip_uri_get_other_param(uri, &cause_name);
339
340 if (!cause) {
341 return;
342 }
343
344 cause_value = pj_strtoul(&cause->value);
345
346 data->code = cause_to_reason(cause_value);
347 ast_free(data->str);
348 data->str = ast_strdup("");
349}
350
351static void set_redirecting_reason(pjsip_fromto_hdr *from_info, pjsip_name_addr *to_info,
352 struct ast_party_redirecting_reason *data)
353{
354 static const pj_str_t reason_name = { "reason", 6 };
355 pjsip_param *reason = pjsip_param_find(&from_info->other_param, &reason_name);
356 char *reason_str;
357
358 if (!reason) {
359 if (to_info) {
360 set_redirecting_reason_by_cause(to_info, data);
361 }
362 return;
363 }
364
365 set_redirecting_value(&data->str, &reason->value);
366 if (!data->str) {
367 /* Oops, allocation failure */
368 return;
369 }
370 reason_str = ast_strdupa(data->str);
371
372 /* Remove any enclosing double-quotes */
373 if (*reason_str == '"') {
374 reason_str = ast_strip_quoted(reason_str, "\"", "\"");
375 }
376
377 data->code = ast_redirecting_reason_parse(reason_str);
378 if (data->code < 0) {
380 } else {
381 ast_free(data->str);
382 data->str = ast_strdup("");
383 }
384}
385
387 pjsip_fromto_hdr *from_info,
388 pjsip_name_addr *to_info)
389{
390 struct ast_party_redirecting data;
392
393 if (!session->channel) {
394 return;
395 }
396
398 memset(&update, 0, sizeof(update));
399
401 if (from_info) {
402 set_redirecting_id((pjsip_name_addr*)from_info->uri,
403 &data.from, &update.from);
404 set_redirecting_reason(from_info, to_info, &data.reason);
406 } else {
407 copy_redirecting_id(&data.from, &session->id, &update.from);
408 }
409
410 if (to_info) {
411 set_redirecting_id(to_info, &data.to, &update.to);
412 }
413
414 ast_set_party_id_all(&update.priv_orig);
415 ast_set_party_id_all(&update.priv_from);
417 ++data.count;
418
419 ast_channel_set_redirecting(session->channel, &data, &update);
420 /* Only queue an indication if it was due to a response */
421 if (session->inv_session->role == PJSIP_ROLE_UAC) {
423 }
425}
426
427static int diversion_incoming_request(struct ast_sip_session *session, pjsip_rx_data *rdata)
428{
429 pjsip_fromto_hdr *hdr = get_diversion_header(rdata);
430
431 if (hdr) {
432 set_redirecting(session, hdr, (pjsip_name_addr*)
433 PJSIP_MSG_TO_HDR(rdata->msg_info.msg)->uri);
434 } else {
435 pjsip_fromto_hdr *history_info_to;
436 pjsip_fromto_hdr *history_info_from;
437 history_info_to = get_history_info_header(rdata, 0);
438
439 if (history_info_to) {
440 /* If History-Info is present, then it will also include the original
441 redirected-from in addition to the redirected-to */
442 history_info_from = get_history_info_header(rdata, 1);
443 set_redirecting(session, history_info_from, (pjsip_name_addr*)history_info_to->uri);
444 }
445 }
446
447 return 0;
448}
449
450static void diversion_incoming_response(struct ast_sip_session *session, pjsip_rx_data *rdata)
451{
452 static const pj_str_t contact_name = { "Contact", 7 };
453 static const pj_str_t contact_name_s = { "m", 1 };
454
455 pjsip_status_line status = rdata->msg_info.msg->line.status;
456 pjsip_fromto_hdr *div_hdr;
457 pjsip_fromto_hdr *history_info_to;
458 pjsip_fromto_hdr *history_info_from;
459 pjsip_contact_hdr *contact_hdr;
460
461 if ((status.code != 302) && (status.code != 181)) {
462 return;
463 }
464
465 /* use the diversion header info if there is one. if not one then use the
466 the history-info, if that doesn't exist, use session caller id info. if
467 that doesn't exist use info from the To hdr*/
468 if (!(div_hdr = get_diversion_header(rdata))) {
469 history_info_to = get_history_info_header(rdata, 0);
470
471 if (history_info_to) {
472 /* If History-Info is present, then it will also include the original
473 redirected-from in addition to the redirected-to */
474 history_info_from = get_history_info_header(rdata, 1);
475 set_redirecting(session, history_info_from, (pjsip_name_addr*)history_info_to->uri);
476 return;
477 }
478 if (!div_hdr && !session->id.number.valid) {
479 div_hdr = PJSIP_MSG_TO_HDR(rdata->msg_info.msg);
480 }
481 }
482
483
484 if (status.code == 302) {
485 /* With 302, Contact indicates the final destination and possibly Diversion indicates the hop before */
486 contact_hdr = pjsip_msg_find_hdr_by_names(rdata->msg_info.msg, &contact_name, &contact_name_s, NULL);
487
488 set_redirecting(session, div_hdr, contact_hdr ? (pjsip_name_addr*)contact_hdr->uri :
489 (pjsip_name_addr*)PJSIP_MSG_FROM_HDR(rdata->msg_info.msg)->uri);
490 } else {
491 /* With 181, Diversion is non-standard, but if present indicates the new final destination, and To indicating the original */
492 set_redirecting(session, PJSIP_MSG_TO_HDR(rdata->msg_info.msg),
493 div_hdr ? (pjsip_name_addr*)div_hdr->uri : NULL);
494 }
495}
496
497/*!
498 * \internal
499 * \brief Adds diversion header information to an outbound SIP message
500 *
501 * \param tdata The outbound message
502 * \param data The redirecting data used to fill parts of the diversion header
503 */
504static void add_diversion_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
505{
506 static const pj_str_t reason_name = { "reason", 6 };
507
508 pjsip_fromto_hdr *hdr;
509 pjsip_name_addr *name_addr;
510 pjsip_param *param;
511 pjsip_fromto_hdr *old_hdr;
512 const char *reason_str;
513 const char *quote_str;
514 char *reason_buf;
515 pjsip_uri *base;
516
517 struct ast_party_id *id = NULL;
518 if (tdata->msg->type == PJSIP_REQUEST_MSG) {
519 id = &data->from;
520 } else {
521 /* In responses indicate the new destination */
522 id = &data->to;
523 }
524
525 base = PJSIP_MSG_FROM_HDR(tdata->msg)->uri;
526
527 if (!id->number.valid || ast_strlen_zero(id->number.str)) {
528 return;
529 }
530
531 hdr = pjsip_from_hdr_create(tdata->pool);
532 hdr->type = PJSIP_H_OTHER;
533 hdr->sname = hdr->name = diversion_name;
534
535 name_addr = pjsip_uri_clone(tdata->pool, base);
536
537 pj_strdup2(tdata->pool, &name_addr->display, id->name.str);
538 pj_strdup2(tdata->pool, (pj_str_t *)ast_sip_pjsip_uri_get_username(name_addr->uri), id->number.str);
539
540 param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
541 param->name = reason_name;
542
543 reason_str = reason_code_to_str(&data->reason);
544
545 /* Reason is either already quoted or it is a token to not need quotes added. */
546 quote_str = *reason_str == '\"' || sip_is_token(reason_str) ? "" : "\"";
547
548 reason_buf = pj_pool_alloc(tdata->pool, strlen(reason_str) + 3);
549 sprintf(reason_buf, "%s%s%s", quote_str, reason_str, quote_str);/* Safe */
550
551 param->value = pj_str(reason_buf);
552
553 pj_list_insert_before(&hdr->other_param, param);
554
555 hdr->uri = (pjsip_uri *) name_addr;
556 old_hdr = pjsip_msg_find_hdr_by_name(tdata->msg, &diversion_name, NULL);
557 if (old_hdr) {
558 pj_list_erase(old_hdr);
559 }
560 pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
561}
562
563/*!
564 * \internal
565 * \brief Adds history-info header information to an outbound SIP message
566 *
567 * \param tdata The outbound message
568 * \param data The redirecting data used to fill parts of the history-info header
569 */
570static void add_history_info_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
571{
572 static const pj_str_t index_name = { "index", 5 };
573 static const pj_str_t cause_name = { "cause", 5 };
574 static const pj_str_t first_index = { "1", 1 };
575 static const pj_str_t last_index = { "1.1", 3 };
576
577 pjsip_fromto_hdr *hdr;
578 pjsip_name_addr *name_addr;
579 pjsip_sip_uri *uri;
580 pjsip_param *param;
581 pjsip_fromto_hdr *old_hdr;
582 unsigned int cause;
583 char *cause_buf;
584
585 struct ast_party_id *to = &data->to;
586 struct ast_party_id *from = &data->from;
587
588 pjsip_uri *base = PJSIP_MSG_TO_HDR(tdata->msg)->uri;
589
590
591 hdr = pjsip_from_hdr_create(tdata->pool);
592 hdr->type = PJSIP_H_OTHER;
593 hdr->sname = hdr->name = history_info_name;
594
595 name_addr = pjsip_uri_clone(tdata->pool, base);
596 uri = pjsip_uri_get_uri(name_addr->uri);
597
598 /* if no redirecting information, then TO is the original destination */
599 if (from->number.valid && !ast_strlen_zero(from->number.str)) {
600 pj_strdup2(tdata->pool, &name_addr->display, from->name.str);
601 pj_strdup2(tdata->pool, &uri->user, from->number.str);
602 }
603
604 param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
605 param->name = index_name;
606 param->value = first_index;
607
608
609 pj_list_insert_before(&hdr->other_param, param);
610 hdr->uri = (pjsip_uri *) name_addr;
611
612 while ((old_hdr = pjsip_msg_find_hdr_by_name(tdata->msg, &history_info_name, NULL)) != NULL) {
613 pj_list_erase(old_hdr);
614 }
615
616 pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
617
618 if (!to->number.valid || ast_strlen_zero(to->number.str)) {
619 return;
620 }
621
622 hdr = pjsip_from_hdr_create(tdata->pool);
623 hdr->type = PJSIP_H_OTHER;
624 hdr->sname = hdr->name = history_info_name;
625
626 name_addr = pjsip_uri_clone(tdata->pool, base);
627 uri = pjsip_uri_get_uri(name_addr->uri);
628
629 pj_strdup2(tdata->pool, &name_addr->display, to->name.str);
630 pj_strdup2(tdata->pool, &uri->user, to->number.str);
631
632 param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
633 param->name = index_name;
634 param->value = last_index;
635 pj_list_insert_before(&hdr->other_param, param);
636
637 param = PJ_POOL_ALLOC_T(tdata->pool, pjsip_param);
638 param->name = cause_name;
639 cause = reason_code_to_cause(&data->reason);
640 cause_buf = pj_pool_alloc(tdata->pool, 4);
641 snprintf(cause_buf, 4, "%ud", cause);
642 param->value = pj_str(cause_buf);
643 pj_list_insert_before(&uri->other_param, param);
644 hdr->uri = (pjsip_uri *) name_addr;
645
646 pjsip_msg_add_hdr(tdata->msg, (pjsip_hdr *)hdr);
647}
648
649static void get_redirecting_add_diversion(struct ast_sip_session *session, pjsip_tx_data *tdata)
650{
651 struct ast_party_redirecting *data;
652
653 add_supported(tdata);
654
655 if (session->channel && session->endpoint->id.send_diversion &&
656 (data = ast_channel_redirecting(session->channel))->count) {
657 add_diversion_header(tdata, data);
658 }
659 if (session->channel && session->endpoint->id.send_history_info) {
660 data = ast_channel_redirecting(session->channel);
661 add_history_info_header(tdata, data);
662 }
663}
664
665/*!
666 * \internal
667 * \brief Adds a diversion header to an outgoing INVITE request if
668 * redirecting information is available.
669 *
670 * \param session The session on which the INVITE request is to be sent
671 * \param tdata The outbound INVITE request
672 */
673static void diversion_outgoing_request(struct ast_sip_session *session, pjsip_tx_data *tdata)
674{
676}
677
678/*!
679 * \internal
680 * \brief Adds a diversion header to an outgoing 3XX response
681 *
682 * \param session The session on which the INVITE response is to be sent
683 * \param tdata The outbound INVITE response
684 */
685static void diversion_outgoing_response(struct ast_sip_session *session, pjsip_tx_data *tdata)
686{
687 struct pjsip_status_line status = tdata->msg->line.status;
688
689 /* add to 302 and 181 */
690 if (PJSIP_IS_STATUS_IN_CLASS(status.code, 300) || (status.code == 181)) {
692 }
693}
694
696 .method = "INVITE",
697 /* this supplement needs to be called after caller id
698 and after the channel has been created */
699 .priority = AST_SIP_SUPPLEMENT_PRIORITY_CHANNEL + 100,
700 .incoming_request = diversion_incoming_request,
701 .incoming_response = diversion_incoming_response,
702 .outgoing_request = diversion_outgoing_request,
703 .outgoing_response = diversion_outgoing_response,
704 .response_priority = AST_SIP_SESSION_BEFORE_MEDIA,
705};
706
707static int load_module(void)
708{
709 /* Because we are passing static memory to pjsip, we need to make sure it
710 * stays valid while we potentially have active sessions */
714}
715
716static int unload_module(void)
717{
719 return 0;
720}
721
722AST_MODULE_INFO(ASTERISK_GPL_KEY, AST_MODFLAG_LOAD_ORDER, "PJSIP Add Diversion Header Support",
723 .support_level = AST_MODULE_SUPPORT_CORE,
724 .load = load_module,
725 .unload = unload_module,
726 .load_pri = AST_MODPRI_APP_DEPEND,
727 .requires = "res_pjsip,res_pjsip_session",
jack_status_t status
Definition: app_jack.c:146
const char * str
Definition: app_jack.c:147
enum queue_result id
Definition: app_queue.c:1638
struct sla_ringing_trunk * first
Definition: app_sla.c:332
Asterisk main include file. File version handling, generic pbx functions.
static struct ast_mansession session
#define ast_free(a)
Definition: astmm.h:180
#define ast_strdup(str)
A wrapper for strdup()
Definition: astmm.h:241
#define ast_strdupa(s)
duplicate a string in memory from the stack
Definition: astmm.h:298
#define ast_malloc(len)
A wrapper for malloc()
Definition: astmm.h:191
CallerID (and other GR30) management and generation Includes code and algorithms from the Zapata libr...
AST_REDIRECTING_REASON
redirecting reason codes.
Definition: callerid.h:484
@ AST_REDIRECTING_REASON_AWAY
Definition: callerid.h:495
@ AST_REDIRECTING_REASON_UNKNOWN
Definition: callerid.h:485
@ AST_REDIRECTING_REASON_SEND_TO_VM
Definition: callerid.h:497
@ AST_REDIRECTING_REASON_NO_ANSWER
Definition: callerid.h:487
@ AST_REDIRECTING_REASON_DO_NOT_DISTURB
Definition: callerid.h:491
@ AST_REDIRECTING_REASON_FOLLOW_ME
Definition: callerid.h:493
@ AST_REDIRECTING_REASON_DEFLECTION
Definition: callerid.h:492
@ AST_REDIRECTING_REASON_UNAVAILABLE
Definition: callerid.h:488
@ AST_REDIRECTING_REASON_UNCONDITIONAL
Definition: callerid.h:489
@ AST_REDIRECTING_REASON_CALL_FWD_DTE
Definition: callerid.h:496
@ AST_REDIRECTING_REASON_OUT_OF_ORDER
Definition: callerid.h:494
@ AST_REDIRECTING_REASON_TIME_OF_DAY
Definition: callerid.h:490
@ AST_REDIRECTING_REASON_USER_BUSY
Definition: callerid.h:486
int ast_redirecting_reason_parse(const char *data)
Convert redirecting reason text code to value (used in config file parsing)
Definition: callerid.c:1324
General Asterisk PBX channel definitions.
void ast_party_redirecting_init(struct ast_party_redirecting *init)
Initialize the given redirecting structure.
Definition: channel.c:2122
void ast_channel_set_redirecting(struct ast_channel *chan, const struct ast_party_redirecting *redirecting, const struct ast_set_party_redirecting *update)
Set the redirecting id information in the Asterisk channel.
Definition: channel.c:9118
struct ast_party_redirecting * ast_channel_redirecting(struct ast_channel *chan)
void ast_channel_queue_redirecting_update(struct ast_channel *chan, const struct ast_party_redirecting *redirecting, const struct ast_set_party_redirecting *update)
Queue a redirecting update frame on a channel.
Definition: channel.c:10296
void ast_set_party_id_all(struct ast_set_party_id *update_id)
Set the update marker to update all information of a corresponding party id.
Definition: channel.c:1750
void ast_party_id_copy(struct ast_party_id *dest, const struct ast_party_id *src)
Copy the source party id information to the destination party id.
Definition: channel.c:1765
void ast_party_redirecting_free(struct ast_party_redirecting *doomed)
Destroy the redirecting information contents.
Definition: channel.c:2179
static void update(int code_size, int y, int wi, int fi, int dq, int sr, int dqsez, struct g726_state *state_ptr)
Definition: codec_g726.c:367
Asterisk module definitions.
@ AST_MODFLAG_LOAD_ORDER
Definition: module.h:317
#define ast_module_shutdown_ref(mod)
Prevent unload of the module before shutdown.
Definition: module.h:464
#define AST_MODULE_INFO(keystr, flags_to_set, desc, fields...)
Definition: module.h:543
@ AST_MODPRI_APP_DEPEND
Definition: module.h:328
@ AST_MODULE_SUPPORT_CORE
Definition: module.h:121
#define ASTERISK_GPL_KEY
The text the key() function should return.
Definition: module.h:46
@ AST_MODULE_LOAD_SUCCESS
Definition: module.h:70
struct pjsip_param * ast_sip_pjsip_uri_get_other_param(pjsip_uri *uri, const pj_str_t *param_str)
Find an 'other' SIP/SIPS URI parameter by name.
Definition: res_pjsip.c:3511
const pj_str_t * ast_sip_pjsip_uri_get_username(pjsip_uri *uri)
Get the user portion of the pjsip_uri.
Definition: res_pjsip.c:3477
int ast_sip_is_allowed_uri(pjsip_uri *uri)
Check whether a pjsip_uri is allowed or not.
Definition: res_pjsip.c:3472
@ AST_SIP_SUPPLEMENT_PRIORITY_CHANNEL
Definition: res_pjsip.h:3174
void ast_copy_pj_str(char *dest, const pj_str_t *src, size_t size)
Copy a pj_str_t into a standard character buffer.
Definition: res_pjsip.c:2201
static void set_redirecting_reason(pjsip_fromto_hdr *from_info, pjsip_name_addr *to_info, struct ast_party_redirecting_reason *data)
static const struct reasons reason_table[]
static pjsip_fromto_hdr * get_history_info_header(pjsip_rx_data *rdata, const unsigned int first)
static const unsigned int reason_code_to_cause(const struct ast_party_redirecting_reason *reason)
static void add_history_info_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
static void set_redirecting_reason_by_cause(pjsip_name_addr *name_addr, struct ast_party_redirecting_reason *data)
static const pj_str_t history_info_name
static int add_supported(pjsip_tx_data *tdata)
static pj_str_t HISTINFO_SUPPORTED_NAME
static pjsip_fromto_hdr * get_diversion_header(pjsip_rx_data *rdata)
static int diversion_incoming_request(struct ast_sip_session *session, pjsip_rx_data *rdata)
static void diversion_outgoing_request(struct ast_sip_session *session, pjsip_tx_data *tdata)
static const pj_str_t diversion_name
static void diversion_outgoing_response(struct ast_sip_session *session, pjsip_tx_data *tdata)
static void set_redirecting(struct ast_sip_session *session, pjsip_fromto_hdr *from_info, pjsip_name_addr *to_info)
static void get_redirecting_add_diversion(struct ast_sip_session *session, pjsip_tx_data *tdata)
static void set_redirecting_value(char **dst, const pj_str_t *src)
static void set_redirecting_id(pjsip_name_addr *name_addr, struct ast_party_id *data, struct ast_set_party_id *update)
static int load_module(void)
static const char * reason_code_to_str(const struct ast_party_redirecting_reason *reason)
static int unload_module(void)
static void diversion_incoming_response(struct ast_sip_session *session, pjsip_rx_data *rdata)
static int sip_is_token(const char *str)
static enum AST_REDIRECTING_REASON cause_to_reason(const unsigned long cause)
static void add_diversion_header(pjsip_tx_data *tdata, struct ast_party_redirecting *data)
static void copy_redirecting_id(struct ast_party_id *dst, const struct ast_party_id *src, struct ast_set_party_id *update)
static struct ast_sip_session_supplement diversion_supplement
@ AST_SIP_SESSION_BEFORE_MEDIA
#define ast_sip_session_register_supplement(supplement)
void ast_sip_session_unregister_supplement(struct ast_sip_session_supplement *supplement)
Unregister a an supplement to SIP session processing.
Definition: pjsip_session.c:63
#define NULL
Definition: resample.c:96
String manipulation functions.
static force_inline int attribute_pure ast_strlen_zero(const char *s)
Definition: strings.h:65
char * ast_strip_quoted(char *s, const char *beg_quotes, const char *end_quotes)
Strip leading/trailing whitespace and quotes from a string.
Definition: utils.c:1818
struct ast_module * self
Definition: module.h:342
Information needed to identify an endpoint in a call.
Definition: channel.h:338
struct ast_party_name name
Subscriber name.
Definition: channel.h:340
struct ast_party_number number
Subscriber phone number.
Definition: channel.h:342
unsigned char valid
TRUE if the name information is valid/present.
Definition: channel.h:279
char * str
Subscriber name (Malloced)
Definition: channel.h:264
unsigned char valid
TRUE if the number information is valid/present.
Definition: channel.h:297
char * str
Subscriber phone number (Malloced)
Definition: channel.h:291
Redirecting reason information.
Definition: channel.h:501
int code
enum AST_REDIRECTING_REASON value for redirection
Definition: channel.h:510
char * str
a string value for the redirecting reason
Definition: channel.h:507
Redirecting Line information. RDNIS (Redirecting Directory Number Information Service) Where a call d...
Definition: channel.h:522
struct ast_party_redirecting_reason reason
Reason for the redirection.
Definition: channel.h:542
struct ast_party_id from
Who is redirecting the call (Sent to the party the call is redirected toward)
Definition: channel.h:527
int count
Number of times the call was redirected.
Definition: channel.h:548
struct ast_party_id to
Call is redirecting to a new party (Sent to the caller)
Definition: channel.h:530
Indicate what information in ast_party_id should be set.
Definition: channel.h:361
Indicate what information in ast_party_redirecting should be set.
Definition: channel.h:555
A supplement to SIP message processing.
A structure describing a SIP session.
Diversion header reasons.
const char * text
enum AST_REDIRECTING_REASON code
const unsigned int cause
int value
Definition: syslog.c:37
#define ARRAY_LEN(a)
Definition: utils.h:666