src/core/sipe-media.c

   1 /**
   2  * @file sipe-media.c
   3  *
   4  * pidgin-sipe
   5  *
   6  * Copyright (C) 2010 Jakub Adam <jakub.adam@ktknet.cz>
   7  *
   8  * This program is free software; you can redistribute it and/or modify
   9  * it under the terms of the GNU General Public License as published by
  10  * the Free Software Foundation; either version 2 of the License, or
  11  * (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  *
  18  * You should have received a copy of the GNU General Public License
  19  * along with this program; if not, write to the Free Software
  20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  21  */
  22
  23 #ifdef HAVE_CONFIG_H
  24 #include "config.h"
  25 #endif
  26
  27 #include <stdio.h>
  28 #include <stdlib.h>
  29
  30 #include <glib.h>
  31
  32 #include "sipe-common.h"
  33 #include "sipmsg.h"
  34 #include "sip-transport.h"
  35 #include "sipe-backend.h"
  36 #include "sdpmsg.h"
  37 #include "sipe-chat.h"
  38 #include "sipe-core.h"
  39 #include "sipe-core-private.h"
  40 #include "sipe-dialog.h"
  41 #include "sipe-media.h"
  42 #include "sipe-session.h"
  43 #include "sipe-utils.h"
  44 #include "sipe-nls.h"
  45 #include "sipe-schedule.h"
  46 #include "sipe-xml.h"
  47
  48 struct sipe_media_call_private {
  49         struct sipe_media_call public;
  50
  51         /* private part starts here */
  52         struct sipe_core_private        *sipe_private;
  53         gchar                           *with;
  54
  55         struct sipmsg                   *invitation;
  56         SipeIceVersion                   ice_version;
  57         gboolean                         encryption_compatible;
  58
  59         struct sdpmsg                   *smsg;
  60         GSList                          *failed_media;
  61 };
  62 #define SIPE_MEDIA_CALL         ((struct sipe_media_call *) call_private)
  63 #define SIPE_MEDIA_CALL_PRIVATE ((struct sipe_media_call_private *) call)
  64
  65 static void sipe_media_codec_list_free(GList *codecs)
  66 {
  67         for (; codecs; codecs = g_list_delete_link(codecs, codecs))
  68                 sipe_backend_codec_free(codecs->data);
  69 }
  70
  71 static void sipe_media_candidate_list_free(GList *candidates)
  72 {
  73         for (; candidates; candidates = g_list_delete_link(candidates, candidates))
  74                 sipe_backend_candidate_free(candidates->data);
  75 }
  76
  77 static void
  78 sipe_media_call_free(struct sipe_media_call_private *call_private)
  79 {
  80         if (call_private) {
  81                 struct sip_session *session;
  82                 sipe_backend_media_free(call_private->public.backend_private);
  83
  84                 session = sipe_session_find_call(call_private->sipe_private,
  85                                                  call_private->with);
  86                 if (session)
  87                         sipe_session_remove(call_private->sipe_private, session);
  88
  89                 if (call_private->invitation)
  90                         sipmsg_free(call_private->invitation);
  91
  92                 sdpmsg_free(call_private->smsg);
  93                 g_slist_free_full(call_private->failed_media,
  94                                   (GDestroyNotify)sdpmedia_free);
  95                 g_free(call_private->with);
  96                 g_free(call_private);
  97         }
  98 }
  99
 100 static GSList *
 101 backend_candidates_to_sdpcandidate(GList *candidates)
 102 {
 103         GSList *result = NULL;
 104         GList *i;
 105
 106         for (i = candidates; i; i = i->next) {
 107                 struct sipe_backend_candidate *candidate = i->data;
 108                 struct sdpcandidate *c = g_new(struct sdpcandidate, 1);
 109
 110                 c->foundation = sipe_backend_candidate_get_foundation(candidate);
 111                 c->component = sipe_backend_candidate_get_component_type(candidate);
 112                 c->type = sipe_backend_candidate_get_type(candidate);
 113                 c->protocol = sipe_backend_candidate_get_protocol(candidate);
 114                 c->ip = sipe_backend_candidate_get_ip(candidate);
 115                 c->port = sipe_backend_candidate_get_port(candidate);
 116                 c->base_ip = sipe_backend_candidate_get_base_ip(candidate);
 117                 c->base_port = sipe_backend_candidate_get_base_port(candidate);
 118                 c->priority = sipe_backend_candidate_get_priority(candidate);
 119                 c->username = sipe_backend_candidate_get_username(candidate);
 120                 c->password = sipe_backend_candidate_get_password(candidate);
 121
 122                 result = g_slist_append(result, c);
 123         }
 124
 125         return result;
 126 }
 127
 128 static void
 129 get_stream_ip_and_ports(GSList *candidates,
 130                         gchar **ip, guint *rtp_port, guint *rtcp_port,
 131                         SipeCandidateType type)
 132 {
 133         *rtp_port = 0;
 134         *rtcp_port = 0;
 135
 136         for (; candidates; candidates = candidates->next) {
 137                 struct sdpcandidate *candidate = candidates->data;
 138
 139                 if (type == SIPE_CANDIDATE_TYPE_ANY || candidate->type == type) {
 140                         if (candidate->component == SIPE_COMPONENT_RTP) {
 141                                 *rtp_port = candidate->port;
 142                                 *ip = g_strdup(candidate->ip);
 143                         } else if (candidate->component == SIPE_COMPONENT_RTCP)
 144                                 *rtcp_port = candidate->port;
 145                 }
 146
 147                 if (*rtp_port != 0 && *rtcp_port != 0)
 148                         return;
 149         }
 150 }
 151
 152 static struct sdpmedia *
 153 backend_stream_to_sdpmedia(struct sipe_backend_media *backend_media,
 154                            struct sipe_backend_stream *backend_stream)
 155 {
 156         struct sdpmedia *media = g_new0(struct sdpmedia, 1);
 157         GList *codecs = sipe_backend_get_local_codecs(backend_media,
 158                                                       backend_stream);
 159         guint rtcp_port = 0;
 160         SipeMediaType type;
 161         GSList *attributes = NULL;
 162         GList *candidates;
 163         GList *i;
 164
 165         media->name = g_strdup(sipe_backend_stream_get_id(backend_stream));
 166
 167         if (sipe_strequal(media->name, "audio"))
 168                 type = SIPE_MEDIA_AUDIO;
 169         else if (sipe_strequal(media->name, "video"))
 170                 type = SIPE_MEDIA_VIDEO;
 171         else {
 172                 // TODO: incompatible media, should not happen here
 173         }
 174
 175         // Process codecs
 176         for (i = codecs; i; i = i->next) {
 177                 struct sipe_backend_codec *codec = i->data;
 178                 struct sdpcodec *c = g_new0(struct sdpcodec, 1);
 179                 GList *params;
 180
 181                 c->id = sipe_backend_codec_get_id(codec);
 182                 c->name = sipe_backend_codec_get_name(codec);
 183                 c->clock_rate = sipe_backend_codec_get_clock_rate(codec);
 184                 c->type = type;
 185
 186                 params = sipe_backend_codec_get_optional_parameters(codec);
 187                 for (; params; params = params->next) {
 188                         struct sipnameval *param = params->data;
 189                         struct sipnameval *copy = g_new0(struct sipnameval, 1);
 190
 191                         copy->name = g_strdup(param->name);
 192                         copy->value = g_strdup(param->value);
 193
 194                         c->parameters = g_slist_append(c->parameters, copy);
 195                 }
 196
 197                 media->codecs = g_slist_append(media->codecs, c);
 198         }
 199
 200         sipe_media_codec_list_free(codecs);
 201
 202         // Process local candidates
 203         // If we have established candidate pairs, send them in SDP response.
 204         // Otherwise send all available local candidates.
 205         candidates = sipe_backend_media_get_active_local_candidates(backend_media,
 206                                                                     backend_stream);
 207         if (!candidates)
 208                 candidates = sipe_backend_get_local_candidates(backend_media,
 209                                                                backend_stream);
 210
 211         media->candidates = backend_candidates_to_sdpcandidate(candidates);
 212
 213         sipe_media_candidate_list_free(candidates);
 214
 215         get_stream_ip_and_ports(media->candidates, &media->ip, &media->port,
 216                                 &rtcp_port, SIPE_CANDIDATE_TYPE_HOST);
 217         // No usable HOST candidates, use any candidate
 218         if (media->ip == NULL && media->candidates) {
 219                 get_stream_ip_and_ports(media->candidates, &media->ip, &media->port,
 220                                         &rtcp_port, SIPE_CANDIDATE_TYPE_ANY);
 221         }
 222
 223         if (sipe_backend_stream_is_held(backend_stream))
 224                 attributes = sipe_utils_nameval_add(attributes, "inactive", "");
 225
 226         if (rtcp_port) {
 227                 gchar *tmp = g_strdup_printf("%u", rtcp_port);
 228                 attributes  = sipe_utils_nameval_add(attributes, "rtcp", tmp);
 229                 g_free(tmp);
 230         }
 231
 232         attributes = sipe_utils_nameval_add(attributes, "encryption", "rejected");
 233
 234         media->attributes = attributes;
 235
 236         // Process remote candidates
 237         candidates = sipe_backend_media_get_active_remote_candidates(backend_media,
 238                                                                      backend_stream);
 239         media->remote_candidates = backend_candidates_to_sdpcandidate(candidates);
 240         sipe_media_candidate_list_free(candidates);
 241
 242         return media;
 243 }
 244
 245 static struct sdpmsg *
 246 sipe_media_to_sdpmsg(struct sipe_media_call_private *call_private)
 247 {
 248         struct sipe_backend_media *backend_media = call_private->public.backend_private;
 249         struct sdpmsg *msg = g_new0(struct sdpmsg, 1);
 250         GSList *streams = sipe_backend_media_get_streams(backend_media);
 251
 252         for (; streams; streams = streams->next) {
 253                 struct sdpmedia *media;
 254                 media = backend_stream_to_sdpmedia(backend_media, streams->data);
 255                 msg->media = g_slist_append(msg->media, media);
 256
 257                 if (msg->ip == NULL)
 258                         msg->ip = g_strdup(media->ip);
 259         }
 260
 261         msg->media = g_slist_concat(msg->media, call_private->failed_media);
 262         call_private->failed_media = NULL;
 263
 264         msg->ice_version = call_private->ice_version;
 265
 266         return msg;
 267 }
 268
 269 static void
 270 sipe_invite_call(struct sipe_core_private *sipe_private, TransCallback tc)
 271 {
 272         gchar *hdr;
 273         gchar *contact;
 274         gchar *body;
 275         struct sipe_media_call_private *call_private = sipe_private->media_call;
 276         struct sip_session *session;
 277         struct sip_dialog *dialog;
 278         struct sdpmsg *msg;
 279         gboolean add_2007_fallback = FALSE;
 280
 281         session = sipe_session_find_call(sipe_private, call_private->with);
 282         dialog = session->dialogs->data;
 283         add_2007_fallback = dialog->cseq == 0 && call_private->ice_version == SIPE_ICE_RFC_5245;
 284
 285         contact = get_contact(sipe_private);
 286         hdr = g_strdup_printf(
 287                 "Supported: ms-early-media\r\n"
 288                 "Supported: 100rel\r\n"
 289                 "ms-keep-alive: UAC;hop-hop=yes\r\n"
 290                 "Contact: %s\r\n"
 291                 "Content-Type: %s\r\n",
 292                 contact,
 293                 add_2007_fallback ?
 294                           "multipart/alternative;boundary=\"----=_NextPart_000_001E_01CB4397.0B5EB570\""
 295                         : "application/sdp");
 296         g_free(contact);
 297
 298         msg = sipe_media_to_sdpmsg(call_private);
 299         body = sdpmsg_to_string(msg);
 300
 301         if (add_2007_fallback) {
 302                 gchar *tmp;
 303                 tmp = g_strdup_printf(
 304                         "------=_NextPart_000_001E_01CB4397.0B5EB570\r\n"
 305                         "Content-Type: application/sdp\r\n"
 306                         "Content-Transfer-Encoding: 7bit\r\n"
 307                         "Content-Disposition: session; handling=optional; ms-proxy-2007fallback\r\n"
 308                         "\r\n"
 309                         "o=- 0 0 IN IP4 %s\r\n"
 310                         "s=session\r\n"
 311                         "c=IN IP4 %s\r\n"
 312                         "m=audio 0 RTP/AVP\r\n"
 313                         "\r\n"
 314                         "------=_NextPart_000_001E_01CB4397.0B5EB570\r\n"
 315                         "Content-Type: application/sdp\r\n"
 316                         "Content-Transfer-Encoding: 7bit\r\n"
 317                         "Content-Disposition: session; handling=optional\r\n"
 318                         "\r\n"
 319                         "%s"
 320                         "\r\n"
 321                         "------=_NextPart_000_001E_01CB4397.0B5EB570--\r\n",
 322                         msg->ip, msg->ip, body);
 323                 g_free(body);
 324                 body = tmp;
 325         }
 326
 327         sdpmsg_free(msg);
 328
 329         dialog->outgoing_invite = sip_transport_invite(sipe_private,
 330                                                        hdr,
 331                                                        body,
 332                                                        dialog,
 333                                                        tc);
 334
 335         g_free(body);
 336         g_free(hdr);
 337 }
 338
 339 static struct sip_dialog *
 340 sipe_media_dialog_init(struct sip_session* session, struct sipmsg *msg)
 341 {
 342         gchar *newTag = gentag();
 343         const gchar *oldHeader;
 344         gchar *newHeader;
 345         struct sip_dialog *dialog;
 346
 347         oldHeader = sipmsg_find_header(msg, "To");
 348         newHeader = g_strdup_printf("%s;tag=%s", oldHeader, newTag);
 349         sipmsg_remove_header_now(msg, "To");
 350         sipmsg_add_header_now(msg, "To", newHeader);
 351         g_free(newHeader);
 352
 353         dialog = sipe_dialog_add(session);
 354         dialog->callid = g_strdup(sipmsg_find_header(msg, "Call-ID"));
 355         dialog->with = parse_from(sipmsg_find_header(msg, "From"));
 356         sipe_dialog_parse(dialog, msg, FALSE);
 357
 358         return dialog;
 359 }
 360
 361 static void
 362 send_response_with_session_description(struct sipe_media_call_private *call_private, int code, gchar *text)
 363 {
 364         struct sdpmsg *msg = sipe_media_to_sdpmsg(call_private);
 365         gchar *body = sdpmsg_to_string(msg);
 366         sdpmsg_free(msg);
 367         sipmsg_add_header(call_private->invitation, "Content-Type", "application/sdp");
 368         sip_transport_response(call_private->sipe_private, call_private->invitation, code, text, body);
 369         g_free(body);
 370 }
 371
 372 static gboolean
 373 encryption_levels_compatible(struct sdpmsg *msg)
 374 {
 375         GSList *i;
 376
 377         for (i = msg->media; i; i = i->next) {
 378                 const gchar *enc_level;
 379                 struct sdpmedia *m = i->data;
 380
 381                 enc_level = sipe_utils_nameval_find(m->attributes, "encryption");
 382
 383                 // Decline call if peer requires encryption as we don't support it yet.
 384                 if (sipe_strequal(enc_level, "required"))
 385                         return FALSE;
 386         }
 387
 388         return TRUE;
 389 }
 390
 391 static gboolean
 392 process_invite_call_response(struct sipe_core_private *sipe_private,
 393                                                                    struct sipmsg *msg,
 394                                                                    struct transaction *trans);
 395
 396 static gboolean
 397 update_remote_media(struct sipe_media_call_private* call_private,
 398                     struct sdpmedia *media)
 399 {
 400         struct sipe_backend_media *backend_media = SIPE_MEDIA_CALL->backend_private;
 401         struct sipe_backend_stream *backend_stream;
 402         GList *backend_candidates = NULL;
 403         GList *backend_codecs = NULL;
 404         GSList *i;
 405         gboolean result = TRUE;
 406
 407         backend_stream = sipe_backend_media_get_stream_by_id(backend_media,
 408                                                              media->name);
 409         if (media->port == 0) {
 410                 if (backend_stream)
 411                         sipe_backend_media_remove_stream(backend_media, backend_stream);
 412                 return TRUE;
 413         }
 414
 415         if (!backend_stream)
 416                 return FALSE;
 417
 418         for (i = media->codecs; i; i = i->next) {
 419                 struct sdpcodec *c = i->data;
 420                 struct sipe_backend_codec *codec;
 421                 GSList *j;
 422
 423                 codec = sipe_backend_codec_new(c->id,
 424                                                c->name,
 425                                                c->type,
 426                                                c->clock_rate);
 427
 428                 for (j = c->parameters; j; j = j->next) {
 429                         struct sipnameval *attr = j->data;
 430
 431                         sipe_backend_codec_add_optional_parameter(codec,
 432                                                                   attr->name,
 433                                                                   attr->value);
 434                 }
 435
 436                 backend_codecs = g_list_append(backend_codecs, codec);
 437         }
 438
 439         result = sipe_backend_set_remote_codecs(backend_media,
 440                                                 backend_stream,
 441                                                 backend_codecs);
 442         sipe_media_codec_list_free(backend_codecs);
 443
 444         if (result == FALSE) {
 445                 sipe_backend_media_remove_stream(backend_media, backend_stream);
 446                 return FALSE;
 447         }
 448
 449         for (i = media->candidates; i; i = i->next) {
 450                 struct sdpcandidate *c = i->data;
 451                 struct sipe_backend_candidate *candidate;
 452                 candidate = sipe_backend_candidate_new(c->foundation,
 453                                                        c->component,
 454                                                        c->type,
 455                                                        c->protocol,
 456                                                        c->ip,
 457                                                        c->port,
 458                                                        c->username,
 459                                                        c->password);
 460                 sipe_backend_candidate_set_priority(candidate, c->priority);
 461
 462                 backend_candidates = g_list_append(backend_candidates, candidate);
 463         }
 464
 465         sipe_backend_media_add_remote_candidates(backend_media,
 466                                                  backend_stream,
 467                                                  backend_candidates);
 468         sipe_media_candidate_list_free(backend_candidates);
 469
 470         if (sipe_utils_nameval_find(media->attributes, "inactive")) {
 471                 sipe_backend_stream_hold(backend_media, backend_stream, FALSE);
 472         } else if (sipe_backend_stream_is_held(backend_stream)) {
 473                 sipe_backend_stream_unhold(backend_media, backend_stream, FALSE);
 474         }
 475
 476         return TRUE;
 477 }
 478
 479 static void
 480 apply_remote_message(struct sipe_media_call_private* call_private,
 481                      struct sdpmsg* msg)
 482 {
 483         GSList *i;
 484
 485         g_slist_free_full(call_private->failed_media, (GDestroyNotify)sdpmedia_free);
 486         call_private->failed_media = NULL;
 487
 488         for (i = msg->media; i; i = i->next) {
 489                 struct sdpmedia *media = i->data;
 490                 if (!update_remote_media(call_private, media)) {
 491                         media->port = 0;
 492                         call_private->failed_media =
 493                                 g_slist_append(call_private->failed_media, media);
 494                 }
 495         }
 496
 497         /* We need to keep failed medias until response is sent, remove them
 498          * from sdpmsg that is to be freed. */
 499         for (i = call_private->failed_media; i; i = i->next) {
 500                 msg->media = g_slist_remove(msg->media, i->data);
 501         }
 502
 503         call_private->encryption_compatible = encryption_levels_compatible(msg);
 504 }
 505
 506 // Sends an invite response when the call is accepted and local candidates were
 507 // prepared, otherwise does nothing. If error response is sent, call_private is
 508 // disposed before function returns. Returns true when response was sent.
 509 static gboolean
 510 send_invite_response_if_ready(struct sipe_media_call_private *call_private)
 511 {
 512         struct sipe_backend_media *backend_media;
 513
 514         backend_media = call_private->public.backend_private;
 515
 516         if (!sipe_backend_media_accepted(backend_media) ||
 517             !sipe_backend_candidates_prepared(backend_media))
 518                 return FALSE;
 519
 520         if (!call_private->encryption_compatible) {
 521                 sipmsg_add_header(call_private->invitation, "Warning",
 522                         "308 lcs.microsoft.com \"Encryption Levels not compatible\"");
 523                 sip_transport_response(call_private->sipe_private,
 524                         call_private->invitation,
 525                         488, "Encryption Levels not compatible",
 526                         NULL);
 527                 sipe_backend_media_reject(backend_media, FALSE);
 528                 sipe_backend_notify_error(_("Unable to establish a call"),
 529                         _("Encryption settings of peer are incompatible with ours."));
 530         } else {
 531                 send_response_with_session_description(call_private, 200, "OK");
 532         }
 533
 534         return TRUE;
 535 }
 536
 537 static void candidates_prepared_cb(struct sipe_media_call *call,
 538                                    struct sipe_backend_stream *stream)
 539 {
 540         struct sipe_media_call_private *call_private = SIPE_MEDIA_CALL_PRIVATE;
 541
 542         if (sipe_backend_media_is_initiator(call_private->public.backend_private,
 543                                             stream)) {
 544                 sipe_invite_call(call_private->sipe_private,
 545                                  process_invite_call_response);
 546         } else {
 547                 struct sdpmsg *smsg = call_private->smsg;
 548                 call_private->smsg = NULL;
 549
 550                 apply_remote_message(call_private, smsg);
 551
 552                 if (!send_invite_response_if_ready(call_private) &&
 553                     call_private->ice_version == SIPE_ICE_RFC_5245 &&
 554                     call_private->encryption_compatible) {
 555                         send_response_with_session_description(call_private,
 556                                                        183, "Session Progress");
 557                 }
 558
 559                 sdpmsg_free(smsg);
 560         }
 561 }
 562
 563 static void
 564 media_end_cb(struct sipe_media_call *call)
 565 {
 566         g_return_if_fail(call);
 567
 568         SIPE_MEDIA_CALL_PRIVATE->sipe_private->media_call = NULL;
 569         sipe_media_call_free(SIPE_MEDIA_CALL_PRIVATE);
 570 }
 571
 572 static void call_accept_cb(struct sipe_media_call *call, gboolean local)
 573 {
 574         if (local) {
 575                 send_invite_response_if_ready(SIPE_MEDIA_CALL_PRIVATE);
 576         }
 577 }
 578
 579 static void call_reject_cb(struct sipe_media_call *call, gboolean local)
 580 {
 581         if (local) {
 582                 struct sipe_media_call_private *call_private = SIPE_MEDIA_CALL_PRIVATE;
 583                 sip_transport_response(call_private->sipe_private,
 584                                        call_private->invitation,
 585                                        603, "Decline", NULL);
 586         }
 587 }
 588
 589 static gboolean
 590 sipe_media_send_ack(struct sipe_core_private *sipe_private, struct sipmsg *msg,
 591                                         struct transaction *trans);
 592
 593 static void call_hold_cb(struct sipe_media_call *call,
 594                          gboolean local,
 595                          SIPE_UNUSED_PARAMETER gboolean state)
 596 {
 597         if (local)
 598                 sipe_invite_call(SIPE_MEDIA_CALL_PRIVATE->sipe_private,
 599                                  sipe_media_send_ack);
 600 }
 601
 602 static void call_hangup_cb(struct sipe_media_call *call, gboolean local)
 603 {
 604         if (local) {
 605                 struct sipe_media_call_private *call_private = SIPE_MEDIA_CALL_PRIVATE;
 606                 struct sip_session *session;
 607                 session = sipe_session_find_call(call_private->sipe_private,
 608                                                  call_private->with);
 609
 610                 if (session) {
 611                         sipe_session_close(call_private->sipe_private, session);
 612                 }
 613         }
 614 }
 615
 616 static void
 617 error_cb(struct sipe_media_call *call, gchar *message)
 618 {
 619         struct sipe_media_call_private *call_private = SIPE_MEDIA_CALL_PRIVATE;
 620         gboolean initiator = sipe_backend_media_is_initiator(call->backend_private, NULL);
 621         gboolean accepted = sipe_backend_media_accepted(call->backend_private);
 622
 623         gchar *title = g_strdup_printf("Call with %s failed", call_private->with);
 624         sipe_backend_notify_error(title, message);
 625         g_free(title);
 626
 627         if (!initiator && !accepted) {
 628                 sip_transport_response(call_private->sipe_private,
 629                                        call_private->invitation,
 630                                        488, "Not Acceptable Here", NULL);
 631         }
 632
 633         sipe_backend_media_hangup(call->backend_private, initiator || accepted);
 634 }
 635
 636 static struct sipe_media_call_private *
 637 sipe_media_call_new(struct sipe_core_private *sipe_private,
 638                     const gchar* with, gboolean initiator, SipeIceVersion ice_version)
 639 {
 640         struct sipe_media_call_private *call_private = g_new0(struct sipe_media_call_private, 1);
 641         gchar *cname;
 642
 643         call_private->sipe_private = sipe_private;
 644
 645         cname = g_strdup(sipe_private->contact + 1);
 646         cname[strlen(cname) - 1] = '\0';
 647
 648         call_private->public.backend_private = sipe_backend_media_new(SIPE_CORE_PUBLIC,
 649                                                                       SIPE_MEDIA_CALL,
 650                                                                       with,
 651                                                                       initiator);
 652         sipe_backend_media_set_cname(call_private->public.backend_private, cname);
 653
 654         call_private->ice_version = ice_version;
 655         call_private->encryption_compatible = TRUE;
 656
 657         call_private->public.candidates_prepared_cb = candidates_prepared_cb;
 658         call_private->public.media_end_cb           = media_end_cb;
 659         call_private->public.call_accept_cb         = call_accept_cb;
 660         call_private->public.call_reject_cb         = call_reject_cb;
 661         call_private->public.call_hold_cb           = call_hold_cb;
 662         call_private->public.call_hangup_cb         = call_hangup_cb;
 663         call_private->public.error_cb               = error_cb;
 664
 665         g_free(cname);
 666
 667         return call_private;
 668 }
 669
 670 void sipe_media_hangup(struct sipe_media_call_private *call_private)
 671 {
 672         if (call_private) {
 673                 sipe_backend_media_hangup(call_private->public.backend_private,
 674                                           FALSE);
 675         }
 676 }
 677
 678 static void
 679 sipe_media_initiate_call(struct sipe_core_private *sipe_private,
 680                          const char *with, SipeIceVersion ice_version,
 681                          gboolean with_video)
 682 {
 683         struct sipe_media_call_private *call_private;
 684         struct sipe_backend_media *backend_media;
 685         struct sipe_backend_media_relays *backend_media_relays;
 686         struct sip_session *session;
 687         struct sip_dialog *dialog;
 688
 689         if (sipe_private->media_call)
 690                 return;
 691
 692         call_private = sipe_media_call_new(sipe_private, with, TRUE, ice_version);
 693
 694         session = sipe_session_add_call(sipe_private, with);
 695         dialog = sipe_dialog_add(session);
 696         dialog->callid = gencallid();
 697         dialog->with = g_strdup(session->with);
 698         dialog->ourtag = gentag();
 699
 700         call_private->with = g_strdup(session->with);
 701
 702         backend_media = call_private->public.backend_private;
 703
 704         backend_media_relays =
 705                 sipe_backend_media_relays_convert(sipe_private->media_relays,
 706                                                   sipe_private->media_relay_username,
 707                                                   sipe_private->media_relay_password);
 708
 709         if (!sipe_backend_media_add_stream(backend_media,
 710                                            "audio", with, SIPE_MEDIA_AUDIO,
 711                                            call_private->ice_version, TRUE,
 712                                            backend_media_relays)) {
 713                 sipe_backend_notify_error(_("Error occured"),
 714                                           _("Error creating audio stream"));
 715                 sipe_media_call_free(call_private);
 716                 sipe_backend_media_relays_free(backend_media_relays);
 717                 return;
 718         }
 719
 720         if (   with_video
 721             && !sipe_backend_media_add_stream(backend_media,
 722                                               "video", with, SIPE_MEDIA_VIDEO,
 723                                               call_private->ice_version, TRUE,
 724                                               backend_media_relays)) {
 725                 sipe_backend_notify_error(_("Error occured"),
 726                                           _("Error creating video stream"));
 727                 sipe_media_call_free(call_private);
 728                 sipe_backend_media_relays_free(backend_media_relays);
 729                 return;
 730         }
 731
 732         sipe_private->media_call = call_private;
 733
 734         sipe_backend_media_relays_free(backend_media_relays);
 735
 736         // Processing continues in candidates_prepared_cb
 737 }
 738
 739 void
 740 sipe_core_media_initiate_call(struct sipe_core_public *sipe_public,
 741                               const char *with,
 742                               gboolean with_video)
 743 {
 744         sipe_media_initiate_call(SIPE_CORE_PRIVATE, with,
 745                                  SIPE_ICE_RFC_5245, with_video);
 746 }
 747
 748 void sipe_core_media_connect_conference(struct sipe_core_public *sipe_public,
 749                                         struct sipe_chat_session *chat_session)
 750 {
 751         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 752         struct sipe_backend_media_relays *backend_media_relays;
 753         struct sip_session *session;
 754         struct sip_dialog *dialog;
 755         gchar **parts;
 756         gchar *av_uri;
 757
 758         if (sipe_private->media_call)
 759                 return;
 760
 761         parts = g_strsplit(chat_session->id, "app:conf:focus:", 2);
 762         av_uri = g_strjoinv("app:conf:audio-video:", parts);
 763         g_strfreev(parts);
 764
 765         sipe_private->media_call = sipe_media_call_new(sipe_private, av_uri, TRUE, SIPE_ICE_DRAFT_6);
 766
 767         session = sipe_session_add_call(sipe_private, av_uri);
 768         dialog = sipe_dialog_add(session);
 769         dialog->callid = gencallid();
 770         dialog->with = g_strdup(session->with);
 771         dialog->ourtag = gentag();
 772
 773         g_free(av_uri);
 774
 775         sipe_private->media_call->with = g_strdup(session->with);
 776         sipe_private->media_call->ice_version = SIPE_ICE_DRAFT_6;
 777
 778         backend_media_relays =
 779                 sipe_backend_media_relays_convert(sipe_private->media_relays,
 780                                                   sipe_private->media_relay_username,
 781                                                   sipe_private->media_relay_password);
 782
 783         if (!sipe_backend_media_add_stream(sipe_private->media_call->public.backend_private,
 784                                            "audio", dialog->with,
 785                                            SIPE_MEDIA_AUDIO,
 786                                            SIPE_ICE_DRAFT_6, TRUE,
 787                                            backend_media_relays)) {
 788                 sipe_backend_notify_error(_("Error occured"),
 789                                           _("Error creating audio stream"));
 790                 sipe_media_call_free(sipe_private->media_call);
 791                 sipe_private->media_call = NULL;
 792         }
 793
 794         sipe_backend_media_relays_free(backend_media_relays);
 795
 796         // Processing continues in candidates_prepared_cb
 797 }
 798
 799 gboolean sipe_core_media_in_call(struct sipe_core_public *sipe_public)
 800 {
 801         if (sipe_public) {
 802                 return SIPE_CORE_PRIVATE->media_call != NULL;
 803         }
 804         return FALSE;
 805 }
 806
 807 void
 808 process_incoming_invite_call(struct sipe_core_private *sipe_private,
 809                              struct sipmsg *msg)
 810 {
 811         struct sipe_media_call_private *call_private = sipe_private->media_call;
 812         struct sipe_backend_media *backend_media;
 813         struct sipe_backend_media_relays *backend_media_relays = NULL;
 814         struct sdpmsg *smsg;
 815         gboolean has_new_media = FALSE;
 816         GSList *i;
 817
 818         if (call_private && !is_media_session_msg(call_private, msg)) {
 819                 sip_transport_response(sipe_private, msg, 486, "Busy Here", NULL);
 820                 return;
 821         }
 822
 823         smsg = sdpmsg_parse_msg(msg->body);
 824         if (!smsg) {
 825                 sip_transport_response(sipe_private, msg,
 826                                        488, "Not Acceptable Here", NULL);
 827                 sipe_media_hangup(call_private);
 828                 return;
 829         }
 830
 831         if (!call_private) {
 832                 gchar *with = parse_from(sipmsg_find_header(msg, "From"));
 833                 struct sip_session *session;
 834                 struct sip_dialog *dialog;
 835
 836                 call_private = sipe_media_call_new(sipe_private, with, FALSE, smsg->ice_version);
 837                 session = sipe_session_add_call(sipe_private, with);
 838                 dialog = sipe_media_dialog_init(session, msg);
 839
 840                 call_private->with = g_strdup(session->with);
 841                 sipe_private->media_call = call_private;
 842                 g_free(with);
 843         }
 844
 845         backend_media = call_private->public.backend_private;
 846
 847         if (call_private->invitation)
 848                 sipmsg_free(call_private->invitation);
 849         call_private->invitation = sipmsg_copy(msg);
 850
 851         if (smsg->media)
 852                 backend_media_relays = sipe_backend_media_relays_convert(
 853                                                 sipe_private->media_relays,
 854                                                 sipe_private->media_relay_username,
 855                                                 sipe_private->media_relay_password);
 856
 857         // Create any new media streams
 858         for (i = smsg->media; i; i = i->next) {
 859                 struct sdpmedia *media = i->data;
 860                 gchar *id = media->name;
 861                 SipeMediaType type;
 862
 863                 if (   media->port != 0
 864                     && !sipe_backend_media_get_stream_by_id(backend_media, id)) {
 865                         gchar *with;
 866
 867                         if (sipe_strequal(id, "audio"))
 868                                 type = SIPE_MEDIA_AUDIO;
 869                         else if (sipe_strequal(id, "video"))
 870                                 type = SIPE_MEDIA_VIDEO;
 871                         else
 872                                 continue;
 873
 874                         with = parse_from(sipmsg_find_header(msg, "From"));
 875                         sipe_backend_media_add_stream(backend_media, id, with,
 876                                                       type,
 877                                                       smsg->ice_version,
 878                                                       FALSE,
 879                                                       backend_media_relays);
 880                         has_new_media = TRUE;
 881                         g_free(with);
 882                 }
 883         }
 884
 885         sipe_backend_media_relays_free(backend_media_relays);
 886
 887         if (has_new_media) {
 888                 sdpmsg_free(call_private->smsg);
 889                 call_private->smsg = smsg;
 890                 sip_transport_response(sipe_private, call_private->invitation,
 891                                        180, "Ringing", NULL);
 892                 // Processing continues in candidates_prepared_cb
 893         } else {
 894                 apply_remote_message(call_private, smsg);
 895                 send_response_with_session_description(call_private, 200, "OK");
 896
 897                 sdpmsg_free(smsg);
 898         }
 899 }
 900
 901 void process_incoming_cancel_call(struct sipe_core_private *sipe_private,
 902                                   struct sipmsg *msg)
 903 {
 904         struct sipe_media_call_private *call_private = sipe_private->media_call;
 905
 906         // We respond to the CANCEL request with 200 OK response and
 907         // with 487 Request Terminated to the remote INVITE in progress.
 908         sip_transport_response(sipe_private, msg, 200, "OK", NULL);
 909
 910         if (call_private->invitation) {
 911                 sip_transport_response(sipe_private, call_private->invitation,
 912                                        487, "Request Terminated", NULL);
 913         }
 914
 915         sipe_media_hangup(call_private);
 916 }
 917
 918 static gboolean
 919 sipe_media_send_ack(struct sipe_core_private *sipe_private,
 920                     struct sipmsg *msg,
 921                     struct transaction *trans)
 922 {
 923         struct sipe_media_call_private *call_private = sipe_private->media_call;
 924         struct sip_session *session;
 925         struct sip_dialog *dialog;
 926         int tmp_cseq;
 927
 928         if (!is_media_session_msg(call_private, msg))
 929                 return FALSE;
 930
 931         session = sipe_session_find_call(sipe_private, call_private->with);
 932         dialog = session->dialogs->data;
 933         if (!dialog)
 934                 return FALSE;
 935
 936         tmp_cseq = dialog->cseq;
 937
 938         dialog->cseq = sip_transaction_cseq(trans) - 1;
 939         sip_transport_ack(sipe_private, dialog);
 940         dialog->cseq = tmp_cseq;
 941
 942         dialog->outgoing_invite = NULL;
 943
 944         return TRUE;
 945 }
 946
 947 static gboolean
 948 sipe_media_send_final_ack(struct sipe_core_private *sipe_private,
 949                           struct sipmsg *msg,
 950                           struct transaction *trans)
 951 {
 952         if (!sipe_media_send_ack(sipe_private, msg, trans))
 953                 return FALSE;
 954
 955         sipe_backend_media_accept(sipe_private->media_call->public.backend_private,
 956                                   FALSE);
 957
 958         return TRUE;
 959 }
 960
 961 static void
 962 reinvite_on_candidate_pair_cb(struct sipe_core_public *sipe_public)
 963 {
 964         struct sipe_core_private *sipe_private = SIPE_CORE_PRIVATE;
 965         struct sipe_media_call_private *media_call = sipe_private->media_call;
 966         struct sipe_backend_media *backend_media;
 967         GSList *streams;
 968
 969         if (!media_call)
 970                 return;
 971
 972         backend_media = media_call->public.backend_private;
 973         streams = sipe_backend_media_get_streams(backend_media);
 974
 975         for (; streams; streams = streams->next) {
 976                 struct sipe_backend_stream *s = streams->data;
 977                 GList *remote_candidates =  sipe_backend_media_get_active_remote_candidates(backend_media, s);
 978                 guint components = g_list_length(remote_candidates);
 979
 980                 sipe_media_candidate_list_free(remote_candidates);
 981
 982                 // We must have candidates for both (RTP + RTCP) components ready
 983                 if (components < 2) {
 984                         sipe_schedule_mseconds(sipe_private,
 985                                                "<+media-reinvite-on-candidate-pair>",
 986                                                NULL,
 987                                                500,
 988                                                (sipe_schedule_action) reinvite_on_candidate_pair_cb,
 989                                                NULL);
 990                         return;
 991                 }
 992         }
 993
 994         sipe_invite_call(sipe_private, sipe_media_send_final_ack);
 995 }
 996
 997 static gboolean
 998 process_invite_call_response(struct sipe_core_private *sipe_private,
 999                              struct sipmsg *msg,
1000                              struct transaction *trans)
1001 {
1002         const gchar *with;
1003         struct sipe_media_call_private *call_private = sipe_private->media_call;
1004         struct sipe_backend_media *backend_private;
1005         struct sip_session *session;
1006         struct sip_dialog *dialog;
1007         struct sdpmsg *smsg;
1008
1009         if (!is_media_session_msg(call_private, msg))
1010                 return FALSE;
1011
1012         session = sipe_session_find_call(sipe_private, call_private->with);
1013         dialog = session->dialogs->data;
1014
1015         backend_private = call_private->public.backend_private;
1016         with = dialog->with;
1017
1018         dialog->outgoing_invite = NULL;
1019
1020         if (msg->response >= 400) {
1021                 // Call rejected by remote peer or an error occurred
1022                 gchar *title;
1023                 GString *desc = g_string_new("");
1024                 gboolean append_responsestr = FALSE;
1025
1026                 switch (msg->response) {
1027                         case 480: {
1028                                 const gchar *warn = sipmsg_find_header(msg, "Warning");
1029                                 title = _("User unavailable");
1030
1031                                 if (warn && g_str_has_prefix(warn, "391 lcs.microsoft.com")) {
1032                                         g_string_append_printf(desc, _("%s does not want to be disturbed"), with);
1033                                 } else
1034                                         g_string_append_printf(desc, _("User %s is not available"), with);
1035                                 break;
1036                         }
1037                         case 603:
1038                         case 605:
1039                                 title = _("Call rejected");
1040                                 g_string_append_printf(desc, _("User %s rejected call"), with);
1041                                 break;
1042                         case 488:
1043                                 if (call_private->ice_version == SIPE_ICE_RFC_5245 &&
1044                                     sip_transaction_cseq(trans) == 1) {
1045                                         gchar *with = g_strdup(call_private->with);
1046                                         gboolean with_video = sipe_backend_media_get_stream_by_id(backend_private, "video") != NULL;
1047
1048                                         sipe_media_hangup(call_private);
1049                                         // We might be calling to OC 2007 instance, retry with ICEv6
1050                                         sipe_media_initiate_call(sipe_private, with,
1051                                                                   SIPE_ICE_DRAFT_6, with_video);
1052
1053                                         g_free(with);
1054                                         return TRUE;
1055                                 }
1056                                 // Break intentionally omitted
1057                         default:
1058                                 title = _("Error occured");
1059                                 g_string_append(desc, _("Unable to establish a call"));
1060                                 append_responsestr = TRUE;
1061                                 break;
1062                 }
1063
1064                 if (append_responsestr)
1065                         g_string_append_printf(desc, "\n%d %s",
1066                                                msg->response, msg->responsestr);
1067
1068                 sipe_backend_notify_error(title, desc->str);
1069                 g_string_free(desc, TRUE);
1070
1071                 sipe_media_send_ack(sipe_private, msg, trans);
1072                 sipe_media_hangup(call_private);
1073
1074                 return TRUE;
1075         }
1076
1077         sipe_dialog_parse(dialog, msg, TRUE);
1078         smsg = sdpmsg_parse_msg(msg->body);
1079         if (!smsg) {
1080                 sip_transport_response(sipe_private, msg,
1081                                        488, "Not Acceptable Here", NULL);
1082                 sipe_media_hangup(call_private);
1083                 return FALSE;
1084         }
1085
1086         apply_remote_message(call_private, smsg);
1087
1088         if (msg->response == 183) {
1089                 // Session in progress
1090                 const gchar *rseq = sipmsg_find_header(msg, "RSeq");
1091                 const gchar *cseq = sipmsg_find_header(msg, "CSeq");
1092                 gchar *rack = g_strdup_printf("RAck: %s %s\r\n", rseq, cseq);
1093                 sip_transport_request(sipe_private,
1094                       "PRACK",
1095                       with,
1096                       with,
1097                       rack,
1098                       NULL,
1099                       dialog,
1100                       NULL);
1101                 g_free(rack);
1102         } else {
1103                 sipe_media_send_ack(sipe_private, msg, trans);
1104                 reinvite_on_candidate_pair_cb(SIPE_CORE_PUBLIC);
1105         }
1106
1107         sdpmsg_free(smsg);
1108
1109         return TRUE;
1110 }
1111
1112 gboolean is_media_session_msg(struct sipe_media_call_private *call_private,
1113                               struct sipmsg *msg)
1114 {
1115         if (call_private) {
1116                 const gchar *callid = sipmsg_find_header(msg, "Call-ID");
1117                 struct sip_session *session;
1118
1119                 session = sipe_session_find_call(call_private->sipe_private,
1120                                                  call_private->with);
1121                 if (session) {
1122                         struct sip_dialog *dialog = session->dialogs->data;
1123                         return sipe_strequal(dialog->callid, callid);
1124                 }
1125         }
1126         return FALSE;
1127 }
1128
1129 void sipe_media_handle_going_offline(struct sipe_media_call_private *call_private)
1130 {
1131         struct sipe_backend_media *backend_private;
1132
1133         backend_private = call_private->public.backend_private;
1134
1135         if (   !sipe_backend_media_is_initiator(backend_private, NULL)
1136             && !sipe_backend_media_accepted(backend_private)) {
1137                 sip_transport_response(call_private->sipe_private,
1138                                        call_private->invitation,
1139                                        480, "Temporarily Unavailable", NULL);
1140         } else {
1141                 struct sip_session *session;
1142
1143                 session = sipe_session_find_call(call_private->sipe_private,
1144                                                  call_private->with);
1145                 if (session)
1146                         sipe_session_close(call_private->sipe_private, session);
1147         }
1148
1149         sipe_media_hangup(call_private);
1150 }
1151
1152 static void
1153 sipe_media_relay_free(struct sipe_media_relay *relay)
1154 {
1155         g_free(relay->hostname);
1156         if (relay->dns_query)
1157                 sipe_backend_dns_query_cancel(relay->dns_query);
1158         g_free(relay);
1159 }
1160
1161 void
1162 sipe_media_relay_list_free(GSList *list)
1163 {
1164         for (; list; list = g_slist_delete_link(list, list))
1165                 sipe_media_relay_free(list->data);
1166 }
1167
1168 static void
1169 relay_ip_resolved_cb(struct sipe_media_relay* relay,
1170                      const gchar *ip, SIPE_UNUSED_PARAMETER guint port)
1171 {
1172         gchar *hostname = relay->hostname;
1173         relay->dns_query = NULL;
1174
1175         if (ip && port) {
1176                 relay->hostname = g_strdup(ip);
1177                 SIPE_DEBUG_INFO("Media relay %s resolved to %s.", hostname, ip);
1178         } else {
1179                 relay->hostname = NULL;
1180                 SIPE_DEBUG_INFO("Unable to resolve media relay %s.", hostname);
1181         }
1182
1183         g_free(hostname);
1184 }
1185
1186 static gboolean
1187 process_get_av_edge_credentials_response(struct sipe_core_private *sipe_private,
1188                                          struct sipmsg *msg,
1189                                          SIPE_UNUSED_PARAMETER struct transaction *trans)
1190 {
1191         g_free(sipe_private->media_relay_username);
1192         g_free(sipe_private->media_relay_password);
1193         sipe_media_relay_list_free(sipe_private->media_relays);
1194         sipe_private->media_relay_username = NULL;
1195         sipe_private->media_relay_password = NULL;
1196         sipe_private->media_relays = NULL;
1197
1198         if (msg->response >= 400) {
1199                 SIPE_DEBUG_INFO_NOFORMAT("process_get_av_edge_credentials_response: SERVICE response is not 200. "
1200                                          "Failed to obtain A/V Edge credentials.");
1201                 return FALSE;
1202         }
1203
1204         if (msg->response == 200) {
1205                 sipe_xml *xn_response = sipe_xml_parse(msg->body, msg->bodylen);
1206
1207                 if (sipe_strequal("OK", sipe_xml_attribute(xn_response, "reasonPhrase"))) {
1208                         const sipe_xml *xn_credentials = sipe_xml_child(xn_response, "credentialsResponse/credentials");
1209                         const sipe_xml *xn_relays = sipe_xml_child(xn_response, "credentialsResponse/mediaRelayList");
1210                         const sipe_xml *item;
1211                         GSList *relays = NULL;
1212
1213                         item = sipe_xml_child(xn_credentials, "username");
1214                         sipe_private->media_relay_username = g_strdup(sipe_xml_data(item));
1215                         item = sipe_xml_child(xn_credentials, "password");
1216                         sipe_private->media_relay_password = g_strdup(sipe_xml_data(item));
1217
1218                         for (item = sipe_xml_child(xn_relays, "mediaRelay"); item; item = sipe_xml_twin(item)) {
1219                                 struct sipe_media_relay *relay = g_new0(struct sipe_media_relay, 1);
1220                                 const sipe_xml *node;
1221
1222                                 node = sipe_xml_child(item, "hostName");
1223                                 relay->hostname = g_strdup(sipe_xml_data(node));
1224
1225                                 node = sipe_xml_child(item, "udpPort");
1226                                 relay->udp_port = atoi(sipe_xml_data(node));
1227
1228                                 node = sipe_xml_child(item, "tcpPort");
1229                                 relay->tcp_port = atoi(sipe_xml_data(node));
1230
1231                                 relays = g_slist_append(relays, relay);
1232
1233                                 relay->dns_query = sipe_backend_dns_query_a(
1234                                                         relay->hostname,
1235                                                         relay->udp_port,
1236                                                         (sipe_dns_resolved_cb) relay_ip_resolved_cb,
1237                                                         relay);
1238
1239                                 SIPE_DEBUG_INFO("Media relay: %s TCP: %d UDP: %d",
1240                                                 relay->hostname,
1241                                                 relay->tcp_port, relay->udp_port);
1242                         }
1243
1244                         sipe_private->media_relays = relays;
1245                 }
1246
1247                 sipe_xml_free(xn_response);
1248         }
1249
1250         return TRUE;
1251 }
1252
1253 void
1254 sipe_media_get_av_edge_credentials(struct sipe_core_private *sipe_private)
1255 {
1256         // TODO: re-request credentials after duration expires?
1257         const char CRED_REQUEST_XML[] =
1258                 "<request requestID=\"%d\" "
1259                          "from=\"%s\" "
1260                          "version=\"1.0\" "
1261                          "to=\"%s\" "
1262                          "xmlns=\"http://schemas.microsoft.com/2006/09/sip/mrasp\" "
1263                          "xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\">"
1264                         "<credentialsRequest credentialsRequestID=\"%d\">"
1265                                 "<identity>%s</identity>"
1266                                 "<location>%s</location>"
1267                                 "<duration>480</duration>"
1268                         "</credentialsRequest>"
1269                 "</request>";
1270
1271         int request_id = rand();
1272         gchar *self;
1273         gchar *body;
1274
1275         if (!sipe_private->mras_uri)
1276                 return;
1277
1278         self = sip_uri_self(sipe_private);
1279
1280         body = g_strdup_printf(
1281                 CRED_REQUEST_XML,
1282                 request_id,
1283                 self,
1284                 sipe_private->mras_uri,
1285                 request_id,
1286                 self,
1287                 SIPE_CORE_PRIVATE_FLAG_IS(REMOTE_USER) ? "internet" : "intranet");
1288         g_free(self);
1289
1290         sip_transport_service(sipe_private,
1291                               sipe_private->mras_uri,
1292                               "Content-Type: application/msrtc-media-relay-auth+xml\r\n",
1293                               body,
1294                               process_get_av_edge_credentials_response);
1295
1296         g_free(body);
1297 }
1298
1299 /*
1300   Local Variables:
1301   mode: c
1302   c-file-style: "bsd"
1303   indent-tabs-mode: t
1304   tab-width: 8
1305   End:
1306 */