libpurple/protocols/jabber/google/google_session.c

   1 /**
   2  * Purple is the legal property of its developers, whose names are too numerous
   3  * to list here.  Please refer to the COPYRIGHT file distributed with this
   4  * source distribution.
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02111-1301  USA
  19  */
  20
  21 #include "internal.h"
  22 #include "debug.h"
  23 #include "google_session.h"
  24 #include "relay.h"
  25
  26 #include "jingle/jingle.h"
  27
  28 #ifdef USE_VV
  29
  30 typedef struct {
  31         PurpleMedia *media;
  32         gboolean video;
  33         GList *remote_audio_candidates; /* list of PurpleMediaCandidate */
  34         GList *remote_video_candidates; /* list of PurpleMediaCandidate */
  35         gboolean added_streams;         /* this indicates if the streams have been
  36                                                                    to media (ie. after getting relay credentials */
  37 } GoogleAVSessionData;
  38
  39 static gboolean
  40 google_session_id_equal(gconstpointer a, gconstpointer b)
  41 {
  42         GoogleSessionId *c = (GoogleSessionId*)a;
  43         GoogleSessionId *d = (GoogleSessionId*)b;
  44
  45         return purple_strequal(c->id, d->id) && purple_strequal(c->initiator, d->initiator);
  46 }
  47
  48 static void
  49 google_session_destroy(GoogleSession *session)
  50 {
  51         GoogleAVSessionData *session_data =
  52                 (GoogleAVSessionData *) session->session_data;
  53         g_free(session->id.id);
  54         g_free(session->id.initiator);
  55         g_free(session->remote_jid);
  56
  57         if (session_data->remote_audio_candidates)
  58                 purple_media_candidate_list_free(session_data->remote_audio_candidates);
  59
  60         if (session_data->remote_video_candidates)
  61                 purple_media_candidate_list_free(session_data->remote_video_candidates);
  62
  63         if (session->description)
  64                 purple_xmlnode_free(session->description);
  65
  66         g_free(session->session_data);
  67         g_free(session);
  68 }
  69
  70 static PurpleXmlNode *
  71 google_session_create_xmlnode(GoogleSession *session, const char *type)
  72 {
  73         PurpleXmlNode *node = purple_xmlnode_new("session");
  74         purple_xmlnode_set_namespace(node, NS_GOOGLE_SESSION);
  75         purple_xmlnode_set_attrib(node, "id", session->id.id);
  76         purple_xmlnode_set_attrib(node, "initiator", session->id.initiator);
  77         purple_xmlnode_set_attrib(node, "type", type);
  78         return node;
  79 }
  80
  81 static void
  82 google_session_send_candidates(PurpleMedia *media, gchar *session_id,
  83                 gchar *participant, GoogleSession *session)
  84 {
  85         PurpleMedia *session_media =
  86                 ((GoogleAVSessionData *) session->session_data)->media;
  87         GList *candidates =
  88                 purple_media_get_local_candidates(session_media, session_id,
  89                     session->remote_jid);
  90         GList *iter;
  91         PurpleMediaCandidate *transport;
  92         gboolean video = FALSE;
  93
  94         if (purple_strequal(session_id, "google-video"))
  95                 video = TRUE;
  96
  97         for (iter = candidates; iter; iter = iter->next) {
  98                 JabberIq *iq;
  99                 gchar *ip, *port, *username, *password;
 100                 gchar pref[16];
 101                 PurpleMediaCandidateType type;
 102                 PurpleXmlNode *sess;
 103                 PurpleXmlNode *candidate;
 104                 guint component_id;
 105                 transport = PURPLE_MEDIA_CANDIDATE(iter->data);
 106                 component_id = purple_media_candidate_get_component_id(
 107                                 transport);
 108
 109                 iq = jabber_iq_new(session->js, JABBER_IQ_SET);
 110                 sess = google_session_create_xmlnode(session, "candidates");
 111                 purple_xmlnode_insert_child(iq->node, sess);
 112                 purple_xmlnode_set_attrib(iq->node, "to", session->remote_jid);
 113
 114                 candidate = purple_xmlnode_new("candidate");
 115
 116                 ip = purple_media_candidate_get_ip(transport);
 117                 port = g_strdup_printf("%d",
 118                                 purple_media_candidate_get_port(transport));
 119                 g_ascii_dtostr(pref, 16,
 120                         purple_media_candidate_get_priority(transport) / 1000.0);
 121                 username = purple_media_candidate_get_username(transport);
 122                 password = purple_media_candidate_get_password(transport);
 123                 type = purple_media_candidate_get_candidate_type(transport);
 124
 125                 purple_xmlnode_set_attrib(candidate, "address", ip);
 126                 purple_xmlnode_set_attrib(candidate, "port", port);
 127                 purple_xmlnode_set_attrib(candidate, "name",
 128                                 component_id == PURPLE_MEDIA_COMPONENT_RTP ?
 129                                 video ? "video_rtp" : "rtp" :
 130                                 component_id == PURPLE_MEDIA_COMPONENT_RTCP ?
 131                                 video ? "video_rtcp" : "rtcp" : "none");
 132                 purple_xmlnode_set_attrib(candidate, "username", username);
 133                 /*
 134                  * As of this writing, Farsight 2 in Google compatibility
 135                  * mode doesn't provide a password. The Gmail client
 136                  * requires this to be set.
 137                  */
 138                 purple_xmlnode_set_attrib(candidate, "password",
 139                                 password != NULL ? password : "");
 140                 purple_xmlnode_set_attrib(candidate, "preference", pref);
 141                 purple_xmlnode_set_attrib(candidate, "protocol",
 142                                 purple_media_candidate_get_protocol(transport)
 143                                 == PURPLE_MEDIA_NETWORK_PROTOCOL_UDP ?
 144                                 "udp" : "tcp");
 145                 purple_xmlnode_set_attrib(candidate, "type", type ==
 146                                 PURPLE_MEDIA_CANDIDATE_TYPE_HOST ? "local" :
 147                                                       type ==
 148                                 PURPLE_MEDIA_CANDIDATE_TYPE_SRFLX ? "stun" :
 149                                                       type ==
 150                                 PURPLE_MEDIA_CANDIDATE_TYPE_RELAY ? "relay" :
 151                                 NULL);
 152                 purple_xmlnode_set_attrib(candidate, "generation", "0");
 153                 purple_xmlnode_set_attrib(candidate, "network", "0");
 154                 purple_xmlnode_insert_child(sess, candidate);
 155
 156                 g_free(ip);
 157                 g_free(port);
 158                 g_free(username);
 159                 g_free(password);
 160
 161                 jabber_iq_send(iq);
 162         }
 163         purple_media_candidate_list_free(candidates);
 164 }
 165
 166 static void
 167 google_session_ready(GoogleSession *session)
 168 {
 169         PurpleMedia *media =
 170                 ((GoogleAVSessionData *)session->session_data)->media;
 171         gboolean video =
 172                 ((GoogleAVSessionData *)session->session_data)->video;
 173         if (purple_media_codecs_ready(media, NULL) &&
 174                         purple_media_candidates_prepared(media, NULL, NULL)) {
 175                 gchar *me = g_strdup_printf("%s@%s/%s",
 176                                 session->js->user->node,
 177                                 session->js->user->domain,
 178                                 session->js->user->resource);
 179                 JabberIq *iq;
 180                 PurpleXmlNode *sess, *desc, *payload;
 181                 GList *codecs, *iter;
 182                 gboolean is_initiator = purple_strequal(session->id.initiator, me);
 183
 184                 if (!is_initiator &&
 185                                 !purple_media_accepted(media, NULL, NULL)) {
 186                         g_free(me);
 187                         return;
 188                 }
 189
 190                 iq = jabber_iq_new(session->js, JABBER_IQ_SET);
 191
 192                 if (is_initiator) {
 193                         purple_xmlnode_set_attrib(iq->node, "to", session->remote_jid);
 194                         purple_xmlnode_set_attrib(iq->node, "from", session->id.initiator);
 195                         sess = google_session_create_xmlnode(session, "initiate");
 196                 } else {
 197                         google_session_send_candidates(media,
 198                                         "google-voice", session->remote_jid,
 199                                         session);
 200                         google_session_send_candidates(media,
 201                                         "google-video", session->remote_jid,
 202                                         session);
 203                         purple_xmlnode_set_attrib(iq->node, "to", session->remote_jid);
 204                         purple_xmlnode_set_attrib(iq->node, "from", me);
 205                         sess = google_session_create_xmlnode(session, "accept");
 206                 }
 207                 purple_xmlnode_insert_child(iq->node, sess);
 208                 desc = purple_xmlnode_new_child(sess, "description");
 209                 if (video)
 210                         purple_xmlnode_set_namespace(desc, NS_GOOGLE_SESSION_VIDEO);
 211                 else
 212                         purple_xmlnode_set_namespace(desc, NS_GOOGLE_SESSION_PHONE);
 213
 214                 codecs = purple_media_get_codecs(media, "google-video");
 215
 216                 for (iter = codecs; iter; iter = g_list_next(iter)) {
 217                         PurpleMediaCodec *codec = (PurpleMediaCodec*)iter->data;
 218                         gchar *id = g_strdup_printf("%d",
 219                                         purple_media_codec_get_id(codec));
 220                         gchar *encoding_name =
 221                                         purple_media_codec_get_encoding_name(codec);
 222                         payload = purple_xmlnode_new_child(desc, "payload-type");
 223                         purple_xmlnode_set_attrib(payload, "id", id);
 224                         purple_xmlnode_set_attrib(payload, "name", encoding_name);
 225                         purple_xmlnode_set_attrib(payload, "width", "320");
 226                         purple_xmlnode_set_attrib(payload, "height", "200");
 227                         purple_xmlnode_set_attrib(payload, "framerate", "30");
 228                         g_free(encoding_name);
 229                         g_free(id);
 230                 }
 231                 purple_media_codec_list_free(codecs);
 232
 233                 codecs = purple_media_get_codecs(media, "google-voice");
 234
 235                 for (iter = codecs; iter; iter = g_list_next(iter)) {
 236                         PurpleMediaCodec *codec = (PurpleMediaCodec*)iter->data;
 237                         gchar *id = g_strdup_printf("%d",
 238                                         purple_media_codec_get_id(codec));
 239                         gchar *encoding_name =
 240                                         purple_media_codec_get_encoding_name(codec);
 241                         gchar *clock_rate = g_strdup_printf("%d",
 242                                         purple_media_codec_get_clock_rate(codec));
 243                         payload = purple_xmlnode_new_child(desc, "payload-type");
 244                         if (video)
 245                                 purple_xmlnode_set_namespace(payload, NS_GOOGLE_SESSION_PHONE);
 246                         purple_xmlnode_set_attrib(payload, "id", id);
 247                         /*
 248                          * Hack to make Gmail accept speex as the codec.
 249                          * It shouldn't have to be case sensitive.
 250                          */
 251                         if (purple_strequal(encoding_name, "SPEEX"))
 252                                 purple_xmlnode_set_attrib(payload, "name", "speex");
 253                         else
 254                                 purple_xmlnode_set_attrib(payload, "name", encoding_name);
 255                         purple_xmlnode_set_attrib(payload, "clockrate", clock_rate);
 256                         g_free(clock_rate);
 257                         g_free(encoding_name);
 258                         g_free(id);
 259                 }
 260                 purple_media_codec_list_free(codecs);
 261
 262                 jabber_iq_send(iq);
 263
 264                 if (is_initiator) {
 265                         google_session_send_candidates(media,
 266                                         "google-voice", session->remote_jid,
 267                                         session);
 268                         google_session_send_candidates(media,
 269                                         "google-video", session->remote_jid,
 270                                         session);
 271                 }
 272
 273                 g_signal_handlers_disconnect_by_func(G_OBJECT(media),
 274                                 G_CALLBACK(google_session_ready), session);
 275         }
 276 }
 277
 278 static void
 279 google_session_state_changed_cb(PurpleMedia *media, PurpleMediaState state,
 280                 gchar *sid, gchar *name, GoogleSession *session)
 281 {
 282         if (sid == NULL && name == NULL) {
 283                 if (state == PURPLE_MEDIA_STATE_END) {
 284                         google_session_destroy(session);
 285                 }
 286         }
 287 }
 288
 289 static void
 290 google_session_stream_info_cb(PurpleMedia *media, PurpleMediaInfoType type,
 291                 gchar *sid, gchar *name, gboolean local,
 292                 GoogleSession *session)
 293 {
 294         if (sid != NULL || name != NULL)
 295                 return;
 296
 297         if (type == PURPLE_MEDIA_INFO_HANGUP) {
 298                 PurpleXmlNode *sess;
 299                 JabberIq *iq = jabber_iq_new(session->js, JABBER_IQ_SET);
 300
 301                 purple_xmlnode_set_attrib(iq->node, "to", session->remote_jid);
 302                 sess = google_session_create_xmlnode(session, "terminate");
 303                 purple_xmlnode_insert_child(iq->node, sess);
 304
 305                 jabber_iq_send(iq);
 306         } else if (type == PURPLE_MEDIA_INFO_REJECT) {
 307                 PurpleXmlNode *sess;
 308                 JabberIq *iq = jabber_iq_new(session->js, JABBER_IQ_SET);
 309
 310                 purple_xmlnode_set_attrib(iq->node, "to", session->remote_jid);
 311                 sess = google_session_create_xmlnode(session, "reject");
 312                 purple_xmlnode_insert_child(iq->node, sess);
 313
 314                 jabber_iq_send(iq);
 315         } else if (type == PURPLE_MEDIA_INFO_ACCEPT && local == TRUE) {
 316                 google_session_ready(session);
 317         }
 318 }
 319
 320 static GParameter *
 321 jabber_google_session_get_params(JabberStream *js, const gchar *relay_ip,
 322         guint16 relay_udp, guint16 relay_tcp, guint16 relay_ssltcp,
 323     const gchar *relay_username, const gchar *relay_password, guint *num)
 324 {
 325         guint num_params;
 326         GParameter *params =
 327                 jingle_get_params(js, relay_ip, relay_udp, relay_tcp, relay_ssltcp,
 328                 relay_username, relay_password, &num_params);
 329         GParameter *new_params = g_new0(GParameter, num_params + 1);
 330
 331         memcpy(new_params, params, sizeof(GParameter) * num_params);
 332
 333         purple_debug_info("jabber", "setting Google jingle compatibility param\n");
 334         new_params[num_params].name = "compatibility-mode";
 335         g_value_init(&new_params[num_params].value, G_TYPE_UINT);
 336         g_value_set_uint(&new_params[num_params].value, 1); /* NICE_COMPATIBILITY_GOOGLE */
 337
 338         g_free(params);
 339         *num = num_params + 1;
 340         return new_params;
 341 }
 342
 343
 344 static void
 345 jabber_google_relay_response_session_initiate_cb(GoogleSession *session,
 346     const gchar *relay_ip, guint relay_udp, guint relay_tcp, guint relay_ssltcp,
 347     const gchar *relay_username, const gchar *relay_password)
 348 {
 349         GParameter *params;
 350         guint num_params;
 351         JabberStream *js = session->js;
 352         GoogleAVSessionData *session_data =
 353                 (GoogleAVSessionData *) session->session_data;
 354
 355         session_data->media = purple_media_manager_create_media(
 356                         purple_media_manager_get(),
 357                         purple_connection_get_account(js->gc),
 358                         "fsrtpconference", session->remote_jid, TRUE);
 359
 360         purple_media_set_protocol_data(session_data->media, session);
 361
 362         g_signal_connect_swapped(G_OBJECT(session_data->media),
 363                         "candidates-prepared",
 364                         G_CALLBACK(google_session_ready), session);
 365         g_signal_connect_swapped(G_OBJECT(session_data->media), "codecs-changed",
 366                         G_CALLBACK(google_session_ready), session);
 367         g_signal_connect(G_OBJECT(session_data->media), "state-changed",
 368                         G_CALLBACK(google_session_state_changed_cb), session);
 369         g_signal_connect(G_OBJECT(session_data->media), "stream-info",
 370                         G_CALLBACK(google_session_stream_info_cb), session);
 371
 372         params =
 373                 jabber_google_session_get_params(js, relay_ip, relay_udp, relay_tcp,
 374                         relay_ssltcp, relay_username, relay_password, &num_params);
 375
 376         if (purple_media_add_stream(session_data->media, "google-voice",
 377                         session->remote_jid, PURPLE_MEDIA_AUDIO,
 378                         TRUE, "nice", num_params, params) == FALSE ||
 379                         (session_data->video && purple_media_add_stream(
 380                         session_data->media, "google-video",
 381                         session->remote_jid, PURPLE_MEDIA_VIDEO,
 382                         TRUE, "nice", num_params, params) == FALSE)) {
 383                 purple_media_error(session_data->media, "Error adding stream.");
 384                 purple_media_end(session_data->media, NULL, NULL);
 385         } else {
 386                 session_data->added_streams = TRUE;
 387         }
 388
 389         g_free(params);
 390 }
 391
 392
 393 gboolean
 394 jabber_google_session_initiate(JabberStream *js, const gchar *who, PurpleMediaSessionType type)
 395 {
 396         GoogleSession *session;
 397         JabberBuddy *jb;
 398         JabberBuddyResource *jbr;
 399         gchar *jid;
 400         GoogleAVSessionData *session_data = NULL;
 401
 402         /* construct JID to send to */
 403         jb = jabber_buddy_find(js, who, FALSE);
 404         if (!jb) {
 405                 purple_debug_error("jingle-rtp",
 406                                 "Could not find Jabber buddy\n");
 407                 return FALSE;
 408         }
 409         jbr = jabber_buddy_find_resource(jb, NULL);
 410         if (!jbr) {
 411                 purple_debug_error("jingle-rtp",
 412                                 "Could not find buddy's resource\n");
 413         }
 414
 415         if ((strchr(who, '/') == NULL) && jbr && (jbr->name != NULL)) {
 416                 jid = g_strdup_printf("%s/%s", who, jbr->name);
 417         } else {
 418                 jid = g_strdup(who);
 419         }
 420
 421         session = g_new0(GoogleSession, 1);
 422         session->id.id = jabber_get_next_id(js);
 423         session->id.initiator = g_strdup_printf("%s@%s/%s", js->user->node,
 424                         js->user->domain, js->user->resource);
 425         session->state = SENT_INITIATE;
 426         session->js = js;
 427         session->remote_jid = jid;
 428         session_data = g_new0(GoogleAVSessionData, 1);
 429         session->session_data = session_data;
 430
 431         if (type & PURPLE_MEDIA_VIDEO)
 432                 session_data->video = TRUE;
 433
 434         /* if we got a relay token and relay host in google:jingleinfo, issue an
 435          HTTP request to get that data */
 436         if (js->google_relay_host && js->google_relay_token) {
 437                 jabber_google_do_relay_request(js, session,
 438                         jabber_google_relay_response_session_initiate_cb);
 439         } else {
 440                 jabber_google_relay_response_session_initiate_cb(session, NULL, 0, 0, 0,
 441                         NULL, NULL);
 442         }
 443
 444         /* we don't actually know yet wether it succeeded... maybe this is very
 445          wrong... */
 446         return TRUE;
 447 }
 448
 449 static void
 450 jabber_google_relay_response_session_handle_initiate_cb(GoogleSession *session,
 451     const gchar *relay_ip, guint relay_udp, guint relay_tcp, guint relay_ssltcp,
 452     const gchar *relay_username, const gchar *relay_password)
 453 {
 454         GParameter *params;
 455         guint num_params;
 456         JabberStream *js = session->js;
 457         PurpleXmlNode *codec_element;
 458         const gchar *xmlns;
 459         PurpleMediaCodec *codec;
 460         GList *video_codecs = NULL;
 461         GList *codecs = NULL;
 462         JabberIq *result;
 463         GoogleAVSessionData *session_data =
 464                 (GoogleAVSessionData *) session->session_data;
 465
 466         params =
 467                 jabber_google_session_get_params(js, relay_ip, relay_udp, relay_tcp,
 468                 relay_ssltcp, relay_username, relay_password, &num_params);
 469
 470         if (purple_media_add_stream(session_data->media, "google-voice",
 471                         session->remote_jid, PURPLE_MEDIA_AUDIO, FALSE,
 472                         "nice", num_params, params) == FALSE ||
 473                         (session_data->video && purple_media_add_stream(
 474                         session_data->media, "google-video",
 475                         session->remote_jid, PURPLE_MEDIA_VIDEO,
 476                         FALSE, "nice", num_params, params) == FALSE)) {
 477                 purple_media_error(session_data->media, "Error adding stream.");
 478                 purple_media_stream_info(session_data->media,
 479                                 PURPLE_MEDIA_INFO_REJECT, NULL, NULL, TRUE);
 480         } else {
 481                 /* successfully added stream(s) */
 482                 session_data->added_streams = TRUE;
 483
 484                 if (session_data->remote_audio_candidates) {
 485                         purple_media_add_remote_candidates(session_data->media,
 486                                 "google-voice", session->remote_jid,
 487                             session_data->remote_audio_candidates);
 488                         purple_media_candidate_list_free(session_data->remote_audio_candidates);
 489                         session_data->remote_audio_candidates = NULL;
 490                 }
 491                 if (session_data->remote_video_candidates) {
 492                         purple_media_add_remote_candidates(session_data->media,
 493                                 "google-video", session->remote_jid,
 494                             session_data->remote_video_candidates);
 495                         purple_media_candidate_list_free(session_data->remote_video_candidates);
 496                         session_data->remote_video_candidates = NULL;
 497                 }
 498         }
 499
 500         g_free(params);
 501
 502         for (codec_element = purple_xmlnode_get_child(session->description, "payload-type");
 503              codec_element; codec_element = codec_element->next) {
 504                 const char *id, *encoding_name,  *clock_rate;
 505                 gboolean video;
 506                 if (codec_element->name &&
 507                                 !purple_strequal(codec_element->name, "payload-type"))
 508                         continue;
 509
 510                 xmlns = purple_xmlnode_get_namespace(codec_element);
 511                 encoding_name = purple_xmlnode_get_attrib(codec_element, "name");
 512                 id = purple_xmlnode_get_attrib(codec_element, "id");
 513
 514                 if (!session_data->video ||
 515                                 purple_strequal(xmlns, NS_GOOGLE_SESSION_PHONE)) {
 516                         clock_rate = purple_xmlnode_get_attrib(
 517                                         codec_element, "clockrate");
 518                         video = FALSE;
 519                 } else {
 520                         /*width = purple_xmlnode_get_attrib(codec_element, "width");
 521                         height = purple_xmlnode_get_attrib(codec_element, "height");
 522                         framerate = purple_xmlnode_get_attrib(
 523                                         codec_element, "framerate");*/
 524                         clock_rate = "90000";
 525                         video = TRUE;
 526                 }
 527
 528                 if (id) {
 529                         codec = purple_media_codec_new(atoi(id), encoding_name,
 530                                         video ? PURPLE_MEDIA_VIDEO :
 531                                         PURPLE_MEDIA_AUDIO,
 532                                         clock_rate ? atoi(clock_rate) : 0);
 533                         if (video)
 534                                 video_codecs = g_list_append(
 535                                                 video_codecs, codec);
 536                         else
 537                                 codecs = g_list_append(codecs, codec);
 538                 }
 539         }
 540
 541         if (codecs)
 542                 purple_media_set_remote_codecs(session_data->media, "google-voice",
 543                                 session->remote_jid, codecs);
 544         if (video_codecs)
 545                 purple_media_set_remote_codecs(session_data->media, "google-video",
 546                                 session->remote_jid, video_codecs);
 547
 548         purple_media_codec_list_free(codecs);
 549         purple_media_codec_list_free(video_codecs);
 550
 551         result = jabber_iq_new(js, JABBER_IQ_RESULT);
 552         jabber_iq_set_id(result, session->iq_id);
 553         purple_xmlnode_set_attrib(result->node, "to", session->remote_jid);
 554         jabber_iq_send(result);
 555 }
 556
 557 static gboolean
 558 google_session_handle_initiate(JabberStream *js, GoogleSession *session, PurpleXmlNode *sess, const char *iq_id)
 559 {
 560         const gchar *xmlns;
 561         GoogleAVSessionData *session_data =
 562                 (GoogleAVSessionData *) session->session_data;
 563
 564         if (session->state != UNINIT) {
 565                 purple_debug_error("jabber", "Received initiate for active session.\n");
 566                 return FALSE;
 567         }
 568
 569         session->description = purple_xmlnode_copy(purple_xmlnode_get_child(sess, "description"));
 570         xmlns = purple_xmlnode_get_namespace(session->description);
 571
 572         if (purple_strequal(xmlns, NS_GOOGLE_SESSION_PHONE))
 573                 session_data->video = FALSE;
 574         else if (purple_strequal(xmlns, NS_GOOGLE_SESSION_VIDEO))
 575                 session_data->video = TRUE;
 576         else {
 577                 purple_debug_error("jabber", "Received initiate with "
 578                                 "invalid namespace %s.\n", xmlns);
 579                 return FALSE;
 580         }
 581
 582         session_data->media = purple_media_manager_create_media(
 583                         purple_media_manager_get(),
 584                         purple_connection_get_account(js->gc),
 585                         "fsrtpconference", session->remote_jid, FALSE);
 586
 587         purple_media_set_protocol_data(session_data->media, session);
 588
 589         g_signal_connect_swapped(G_OBJECT(session_data->media),
 590                         "candidates-prepared",
 591                         G_CALLBACK(google_session_ready), session);
 592         g_signal_connect_swapped(G_OBJECT(session_data->media), "codecs-changed",
 593                         G_CALLBACK(google_session_ready), session);
 594         g_signal_connect(G_OBJECT(session_data->media), "state-changed",
 595                         G_CALLBACK(google_session_state_changed_cb), session);
 596         g_signal_connect(G_OBJECT(session_data->media), "stream-info",
 597                         G_CALLBACK(google_session_stream_info_cb), session);
 598
 599         session->iq_id = g_strdup(iq_id);
 600
 601         if (js->google_relay_host && js->google_relay_token) {
 602                 jabber_google_do_relay_request(js, session,
 603                         jabber_google_relay_response_session_handle_initiate_cb);
 604         } else {
 605                 jabber_google_relay_response_session_handle_initiate_cb(session, NULL,
 606                         0, 0, 0, NULL, NULL);
 607         }
 608
 609         return TRUE;
 610 }
 611
 612
 613 static void
 614 google_session_handle_candidates(JabberStream  *js, GoogleSession *session, PurpleXmlNode *sess, const char *iq_id)
 615 {
 616         JabberIq *result;
 617         GList *list = NULL, *video_list = NULL;
 618         PurpleXmlNode *cand;
 619         static int name = 0;
 620         char n[4];
 621         GoogleAVSessionData *session_data =
 622                 (GoogleAVSessionData *) session->session_data;
 623
 624         for (cand = purple_xmlnode_get_child(sess, "candidate"); cand;
 625                         cand = purple_xmlnode_get_next_twin(cand)) {
 626                 PurpleMediaCandidate *info;
 627                 const gchar *cname = purple_xmlnode_get_attrib(cand, "name");
 628                 const gchar *type = purple_xmlnode_get_attrib(cand, "type");
 629                 const gchar *protocol = purple_xmlnode_get_attrib(cand, "protocol");
 630                 const gchar *address = purple_xmlnode_get_attrib(cand, "address");
 631                 const gchar *port = purple_xmlnode_get_attrib(cand, "port");
 632                 const gchar *preference = purple_xmlnode_get_attrib(cand, "preference");
 633                 guint component_id;
 634
 635                 if (cname && type && address && port) {
 636                         PurpleMediaCandidateType candidate_type;
 637                         guint prio = preference ? g_ascii_strtod(preference, NULL) * 1000 : 0;
 638
 639                         g_snprintf(n, sizeof(n), "S%d", name++);
 640
 641                         if (purple_strequal(type, "local"))
 642                                 candidate_type = PURPLE_MEDIA_CANDIDATE_TYPE_HOST;
 643                         else if (purple_strequal(type, "stun"))
 644                                 candidate_type = PURPLE_MEDIA_CANDIDATE_TYPE_PRFLX;
 645                         else if (purple_strequal(type, "relay"))
 646                                 candidate_type = PURPLE_MEDIA_CANDIDATE_TYPE_RELAY;
 647                         else
 648                                 candidate_type = PURPLE_MEDIA_CANDIDATE_TYPE_HOST;
 649
 650                         if (purple_strequal(cname, "rtcp") ||
 651                                         purple_strequal(cname, "video_rtcp"))
 652                                 component_id = PURPLE_MEDIA_COMPONENT_RTCP;
 653                         else
 654                                 component_id = PURPLE_MEDIA_COMPONENT_RTP;
 655
 656                         info = purple_media_candidate_new(n, component_id,
 657                                         candidate_type,
 658                                         purple_strequal(protocol, "udp") ?
 659                                                         PURPLE_MEDIA_NETWORK_PROTOCOL_UDP :
 660                                                         PURPLE_MEDIA_NETWORK_PROTOCOL_TCP_PASSIVE,
 661                                         address,
 662                                         atoi(port));
 663                         g_object_set(info, "username", purple_xmlnode_get_attrib(cand, "username"),
 664                                         "password", purple_xmlnode_get_attrib(cand, "password"),
 665                                 "priority", prio, NULL);
 666                         if (!strncmp(cname, "video_", 6)) {
 667                                 if (session_data->added_streams) {
 668                                         video_list = g_list_append(video_list, info);
 669                                 } else {
 670                                         session_data->remote_video_candidates =
 671                                                 g_list_append(session_data->remote_video_candidates,
 672                                                         info);
 673                                 }
 674                         } else {
 675                                 if (session_data->added_streams) {
 676                                         list = g_list_append(list, info);
 677                                 } else {
 678                                         session_data->remote_audio_candidates =
 679                                                 g_list_append(session_data->remote_audio_candidates,
 680                                                         info);
 681                                 }
 682                         }
 683                 }
 684         }
 685
 686         if (list) {
 687                 purple_media_add_remote_candidates(session_data->media, "google-voice",
 688                         session->remote_jid, list);
 689                 purple_media_candidate_list_free(list);
 690         }
 691         if (video_list) {
 692                 purple_media_add_remote_candidates(session_data->media, "google-video",
 693                         session->remote_jid, video_list);
 694                 purple_media_candidate_list_free(video_list);
 695         }
 696
 697         result = jabber_iq_new(js, JABBER_IQ_RESULT);
 698         jabber_iq_set_id(result, iq_id);
 699         purple_xmlnode_set_attrib(result->node, "to", session->remote_jid);
 700         jabber_iq_send(result);
 701 }
 702
 703 static void
 704 google_session_handle_accept(JabberStream *js, GoogleSession *session, PurpleXmlNode *sess, const char *iq_id)
 705 {
 706         PurpleXmlNode *desc_element = purple_xmlnode_get_child(sess, "description");
 707         PurpleXmlNode *codec_element = purple_xmlnode_get_child(
 708                         desc_element, "payload-type");
 709         GList *codecs = NULL, *video_codecs = NULL;
 710         JabberIq *result = NULL;
 711         const gchar *xmlns = purple_xmlnode_get_namespace(desc_element);
 712         gboolean video = purple_strequal(xmlns, NS_GOOGLE_SESSION_VIDEO);
 713         GoogleAVSessionData *session_data =
 714                 (GoogleAVSessionData *) session->session_data;
 715
 716         for (; codec_element; codec_element = codec_element->next) {
 717                 const gchar *xmlns, *encoding_name, *id,
 718                                 *clock_rate;
 719                 gboolean video_codec = FALSE;
 720
 721                 if (!purple_strequal(codec_element->name, "payload-type"))
 722                         continue;
 723
 724                 xmlns = purple_xmlnode_get_namespace(codec_element);
 725                 encoding_name = purple_xmlnode_get_attrib(codec_element, "name");
 726                 id = purple_xmlnode_get_attrib(codec_element, "id");
 727
 728                 if (!video || purple_strequal(xmlns, NS_GOOGLE_SESSION_PHONE))
 729                         clock_rate = purple_xmlnode_get_attrib(
 730                                         codec_element, "clockrate");
 731                 else {
 732                         clock_rate = "90000";
 733                         /*width = purple_xmlnode_get_attrib(codec_element, "width");
 734                         height = purple_xmlnode_get_attrib(codec_element, "height");
 735                         framerate = purple_xmlnode_get_attrib(
 736                                         codec_element, "framerate");*/
 737                         video_codec = TRUE;
 738                 }
 739
 740                 if (id && encoding_name) {
 741                         PurpleMediaCodec *codec = purple_media_codec_new(
 742                                         atoi(id), encoding_name,
 743                                         video_codec ? PURPLE_MEDIA_VIDEO :
 744                                         PURPLE_MEDIA_AUDIO,
 745                                         clock_rate ? atoi(clock_rate) : 0);
 746                         if (video_codec)
 747                                 video_codecs = g_list_append(
 748                                                 video_codecs, codec);
 749                         else
 750                                 codecs = g_list_append(codecs, codec);
 751                 }
 752         }
 753
 754         if (codecs)
 755                 purple_media_set_remote_codecs(session_data->media, "google-voice",
 756                                 session->remote_jid, codecs);
 757         if (video_codecs)
 758                 purple_media_set_remote_codecs(session_data->media, "google-video",
 759                                 session->remote_jid, video_codecs);
 760
 761         purple_media_stream_info(session_data->media, PURPLE_MEDIA_INFO_ACCEPT,
 762                         NULL, NULL, FALSE);
 763
 764         result = jabber_iq_new(js, JABBER_IQ_RESULT);
 765         jabber_iq_set_id(result, iq_id);
 766         purple_xmlnode_set_attrib(result->node, "to", session->remote_jid);
 767         jabber_iq_send(result);
 768 }
 769
 770 static void
 771 google_session_handle_reject(JabberStream *js, GoogleSession *session, PurpleXmlNode *sess)
 772 {
 773         GoogleAVSessionData *session_data =
 774                 (GoogleAVSessionData *) session->session_data;
 775         purple_media_end(session_data->media, NULL, NULL);
 776 }
 777
 778 static void
 779 google_session_handle_terminate(JabberStream *js, GoogleSession *session, PurpleXmlNode *sess)
 780 {
 781         GoogleAVSessionData *session_data =
 782                 (GoogleAVSessionData *) session->session_data;
 783         purple_media_end(session_data->media, NULL, NULL);
 784 }
 785
 786 static void
 787 google_session_parse_iq(JabberStream *js, GoogleSession *session, PurpleXmlNode *sess, const char *iq_id)
 788 {
 789         const char *type = purple_xmlnode_get_attrib(sess, "type");
 790
 791         if (purple_strequal(type, "initiate")) {
 792                 google_session_handle_initiate(js, session, sess, iq_id);
 793         } else if (purple_strequal(type, "accept")) {
 794                 google_session_handle_accept(js, session, sess, iq_id);
 795         } else if (purple_strequal(type, "reject")) {
 796                 google_session_handle_reject(js, session, sess);
 797         } else if (purple_strequal(type, "terminate")) {
 798                 google_session_handle_terminate(js, session, sess);
 799         } else if (purple_strequal(type, "candidates")) {
 800                 google_session_handle_candidates(js, session, sess, iq_id);
 801         }
 802 }
 803
 804 void
 805 jabber_google_session_parse(JabberStream *js, const char *from,
 806                             JabberIqType type, const char *iq_id,
 807                             PurpleXmlNode *session_node)
 808 {
 809         GoogleSession *session = NULL;
 810         GoogleSessionId id;
 811
 812         PurpleXmlNode *desc_node;
 813
 814         GList *iter = NULL;
 815
 816         if (type != JABBER_IQ_SET)
 817                 return;
 818
 819         id.id = (gchar*)purple_xmlnode_get_attrib(session_node, "id");
 820         if (!id.id)
 821                 return;
 822
 823         id.initiator = (gchar*)purple_xmlnode_get_attrib(session_node, "initiator");
 824         if (!id.initiator)
 825                 return;
 826
 827         iter = purple_media_manager_get_media_by_account(
 828                         purple_media_manager_get(),
 829                         purple_connection_get_account(js->gc));
 830         for (; iter; iter = g_list_delete_link(iter, iter)) {
 831                 GoogleSession *gsession =
 832                                 purple_media_get_protocol_data(iter->data);
 833                 if (google_session_id_equal(&(gsession->id), &id)) {
 834                         session = gsession;
 835                         break;
 836                 }
 837         }
 838         if (iter != NULL) {
 839                 g_list_free(iter);
 840         }
 841
 842         if (session) {
 843                 google_session_parse_iq(js, session, session_node, iq_id);
 844                 return;
 845         }
 846
 847         /* If the session doesn't exist, this has to be an initiate message */
 848         if (!purple_strequal(purple_xmlnode_get_attrib(session_node, "type"), "initiate"))
 849                 return;
 850         desc_node = purple_xmlnode_get_child(session_node, "description");
 851         if (!desc_node)
 852                 return;
 853         session = g_new0(GoogleSession, 1);
 854         session->id.id = g_strdup(id.id);
 855         session->id.initiator = g_strdup(id.initiator);
 856         session->state = UNINIT;
 857         session->js = js;
 858         session->remote_jid = g_strdup(session->id.initiator);
 859         session->session_data = g_new0(GoogleAVSessionData, 1);
 860
 861         google_session_handle_initiate(js, session, session_node, iq_id);
 862 }
 863 #endif /* USE_VV */
 864
 865