sjero.net Git - linphone/blob - coreapi/callbacks.c

   1 /*
   2 linphone
   3 Copyright (C) 2010  Simon MORLAT (simon.morlat@free.fr)
   4
   5 This program is free software; you can redistribute it and/or
   6 modify it under the terms of the GNU General Public License
   7 as published by the Free Software Foundation; either version 2
   8 of the License, or (at your option) any later version.
   9
  10 This program is distributed in the hope that it will be useful,
  11 but WITHOUT ANY WARRANTY; without even the implied warranty of
  12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  13 GNU General Public License for more details.
  14
  15 You should have received a copy of the GNU General Public License
  16 along with this program; if not, write to the Free Software
  17 Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA  02111-1307, USA.
  18 */
  19
  20
  21 #include "sal.h"
  22
  23 #include "linphonecore.h"
  24 #include "private.h"
  25 #include "mediastreamer2/mediastream.h"
  26 #include "lpconfig.h"
  27
  28 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details);
  29
  30 static int media_parameters_changed(LinphoneCall *call, SalMediaDescription *oldmd, SalMediaDescription *newmd) {
  31         if (call->params.in_conference != call->current_params.in_conference) return SAL_MEDIA_DESCRIPTION_CHANGED;
  32         if (call->up_bw != linphone_core_get_upload_bandwidth(call->core)) return SAL_MEDIA_DESCRIPTION_CHANGED;
  33         return sal_media_description_equals(oldmd, newmd);
  34 }
  35
  36 void linphone_core_update_streams_destinations(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription *old_md, SalMediaDescription *new_md) {
  37         SalStreamDescription *old_audiodesc = NULL;
  38         SalStreamDescription *old_videodesc = NULL;
  39         SalStreamDescription *new_audiodesc = NULL;
  40         SalStreamDescription *new_videodesc = NULL;
  41         char *rtp_addr, *rtcp_addr;
  42         int i;
  43
  44         for (i = 0; i < old_md->nstreams; i++) {
  45                 if (old_md->streams[i].type == SalAudio) {
  46                         old_audiodesc = &old_md->streams[i];
  47                 } else if (old_md->streams[i].type == SalVideo) {
  48                         old_videodesc = &old_md->streams[i];
  49                 }
  50         }
  51         for (i = 0; i < new_md->nstreams; i++) {
  52                 if (new_md->streams[i].type == SalAudio) {
  53                         new_audiodesc = &new_md->streams[i];
  54                 } else if (new_md->streams[i].type == SalVideo) {
  55                         new_videodesc = &new_md->streams[i];
  56                 }
  57         }
  58         if (call->audiostream && new_audiodesc) {
  59                 rtp_addr = (new_audiodesc->rtp_addr[0] != '\0') ? new_audiodesc->rtp_addr : new_md->addr;
  60                 rtcp_addr = (new_audiodesc->rtcp_addr[0] != '\0') ? new_audiodesc->rtcp_addr : new_md->addr;
  61                 ms_message("Change audio stream destination: RTP=%s:%d RTCP=%s:%d", rtp_addr, new_audiodesc->rtp_port, rtcp_addr, new_audiodesc->rtcp_port);
  62                 rtp_session_set_remote_addr_full(call->audiostream->ms.session, rtp_addr, new_audiodesc->rtp_port, rtcp_addr, new_audiodesc->rtcp_port);
  63         }
  64 #ifdef VIDEO_ENABLED
  65         if (call->videostream && new_videodesc) {
  66                 rtp_addr = (new_videodesc->rtp_addr[0] != '\0') ? new_videodesc->rtp_addr : new_md->addr;
  67                 rtcp_addr = (new_videodesc->rtcp_addr[0] != '\0') ? new_videodesc->rtcp_addr : new_md->addr;
  68                 ms_message("Change video stream destination: RTP=%s:%d RTCP=%s:%d", rtp_addr, new_videodesc->rtp_port, rtcp_addr, new_videodesc->rtcp_port);
  69                 rtp_session_set_remote_addr_full(call->videostream->ms.session, rtp_addr, new_videodesc->rtp_port, rtcp_addr, new_videodesc->rtcp_port);
  70         }
  71 #endif
  72
  73         /* Copy address and port values from new_md to old_md since we will keep old_md as resultdesc */
  74         strcpy(old_md->addr, new_md->addr);
  75         if (old_audiodesc && new_audiodesc) {
  76                 strcpy(old_audiodesc->rtp_addr, new_audiodesc->rtp_addr);
  77                 strcpy(old_audiodesc->rtcp_addr, new_audiodesc->rtcp_addr);
  78                 old_audiodesc->rtp_port = new_audiodesc->rtp_port;
  79                 old_audiodesc->rtcp_port = new_audiodesc->rtcp_port;
  80         }
  81         if (old_videodesc && new_videodesc) {
  82                 strcpy(old_videodesc->rtp_addr, new_videodesc->rtp_addr);
  83                 strcpy(old_videodesc->rtcp_addr, new_videodesc->rtcp_addr);
  84                 old_videodesc->rtp_port = new_videodesc->rtp_port;
  85                 old_videodesc->rtcp_port = new_videodesc->rtcp_port;
  86         }
  87 }
  88
  89 void linphone_core_update_streams(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription *new_md){
  90         SalMediaDescription *oldmd=call->resultdesc;
  91
  92         if (lc->ringstream!=NULL){
  93                 ring_stop(lc->ringstream);
  94                 lc->ringstream=NULL;
  95         }
  96         if (new_md!=NULL){
  97                 sal_media_description_ref(new_md);
  98                 call->media_pending=FALSE;
  99         }else{
 100                 call->media_pending=TRUE;
 101         }
 102         call->resultdesc=new_md;
 103         if ((call->audiostream && call->audiostream->ms.ticker) || (call->videostream && call->videostream->ms.ticker)){
 104                 /* we already started media: check if we really need to restart it*/
 105                 if (oldmd){
 106                         int md_changed = media_parameters_changed(call, oldmd, new_md);
 107                         if ((md_changed & SAL_MEDIA_DESCRIPTION_CODEC_CHANGED) || call->playing_ringbacktone) {
 108                                 ms_message("Media descriptions are different, need to restart the streams.");
 109                         } else {
 110                                 if (md_changed == SAL_MEDIA_DESCRIPTION_UNCHANGED) {
 111                                         /*as nothing has changed, keep the oldmd */
 112                                         call->resultdesc=oldmd;
 113                                         sal_media_description_unref(new_md);
 114                                         if (call->all_muted){
 115                                                 ms_message("Early media finished, unmuting inputs...");
 116                                                 /*we were in early media, now we want to enable real media */
 117                                                 linphone_call_enable_camera (call,linphone_call_camera_enabled (call));
 118                                                 if (call->audiostream)
 119                                                         linphone_core_mute_mic (lc, linphone_core_is_mic_muted(lc));
 120 #ifdef VIDEO_ENABLED
 121                                                 if (call->videostream && call->camera_active)
 122                                                         video_stream_change_camera(call->videostream,lc->video_conf.device );
 123 #endif
 124                                         }
 125                                         ms_message("No need to restart streams, SDP is unchanged.");
 126                                         return;
 127                                 }
 128                                 else {
 129                                         if (md_changed & SAL_MEDIA_DESCRIPTION_NETWORK_CHANGED) {
 130                                                 ms_message("Network parameters have changed, update them.");
 131                                                 linphone_core_update_streams_destinations(lc, call, oldmd, new_md);
 132                                         }
 133                                         if (md_changed & SAL_MEDIA_DESCRIPTION_CRYPTO_CHANGED) {
 134                                                 ms_message("Crypto parameters have changed, update them.");
 135                                                 linphone_call_update_crypto_parameters(call, oldmd, new_md);
 136                                         }
 137                                         call->resultdesc = oldmd;
 138                                         sal_media_description_unref(new_md);
 139                                         return;
 140                                 }
 141                         }
 142                 }
 143                 linphone_call_stop_media_streams (call);
 144                 linphone_call_init_media_streams (call);
 145         }
 146         if (oldmd)
 147                 sal_media_description_unref(oldmd);
 148
 149         if (new_md) {
 150                 bool_t all_muted=FALSE;
 151                 bool_t send_ringbacktone=FALSE;
 152
 153                 if (call->audiostream==NULL){
 154                         /*this happens after pausing the call locally. The streams is destroyed and then we wait the 200Ok to recreate it*/
 155                         linphone_call_init_media_streams (call);
 156                 }
 157                 if (call->state==LinphoneCallIncomingEarlyMedia && linphone_core_get_remote_ringback_tone (lc)!=NULL){
 158                         send_ringbacktone=TRUE;
 159                 }
 160                 if (call->state==LinphoneCallIncomingEarlyMedia ||
 161                     (call->state==LinphoneCallOutgoingEarlyMedia && !call->params.real_early_media)){
 162                         all_muted=TRUE;
 163                 }
 164                 linphone_call_start_media_streams(call,all_muted,send_ringbacktone);
 165         }
 166 }
 167 #if 0
 168 static bool_t is_duplicate_call(LinphoneCore *lc, const LinphoneAddress *from, const LinphoneAddress *to){
 169         MSList *elem;
 170         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 171                 LinphoneCall *call=(LinphoneCall*)elem->data;
 172                 if (linphone_address_weak_equal(call->log->from,from) &&
 173                     linphone_address_weak_equal(call->log->to, to)){
 174                         return TRUE;
 175                 }
 176         }
 177         return FALSE;
 178 }
 179 #endif
 180
 181 static bool_t already_a_call_with_remote_address(const LinphoneCore *lc, const LinphoneAddress *remote) {
 182         ms_warning(" searching for already_a_call_with_remote_address.");
 183
 184         MSList *elem;
 185         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 186                 const LinphoneCall *call=(LinphoneCall*)elem->data;
 187                 const LinphoneAddress *cRemote=linphone_call_get_remote_address(call);
 188                 if (linphone_address_weak_equal(cRemote,remote)) {
 189                         ms_warning("already_a_call_with_remote_address found.");
 190                         return TRUE;
 191                 }
 192         }
 193         return FALSE;
 194 }
 195
 196 static bool_t already_a_call_pending(LinphoneCore *lc){
 197         MSList *elem;
 198         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 199                 LinphoneCall *call=(LinphoneCall*)elem->data;
 200                 if (call->state==LinphoneCallIncomingReceived
 201                     || call->state==LinphoneCallOutgoingInit
 202                     || call->state==LinphoneCallOutgoingProgress
 203                     || call->state==LinphoneCallOutgoingEarlyMedia
 204                     || call->state==LinphoneCallOutgoingRinging){
 205                         return TRUE;
 206                 }
 207         }
 208         return FALSE;
 209 }
 210
 211 static void call_received(SalOp *h){
 212         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 213         LinphoneCall *call;
 214         const char *from,*to;
 215         LinphoneAddress *from_addr, *to_addr;
 216         bool_t prevent_colliding_calls=lp_config_get_int(lc->config,"sip","prevent_colliding_calls",TRUE);
 217
 218         /* first check if we can answer successfully to this invite */
 219         if (lc->presence_mode==LinphoneStatusBusy ||
 220             lc->presence_mode==LinphoneStatusOffline ||
 221             lc->presence_mode==LinphoneStatusDoNotDisturb ||
 222             lc->presence_mode==LinphoneStatusMoved){
 223                 if (lc->presence_mode==LinphoneStatusBusy )
 224                         sal_call_decline(h,SalReasonBusy,NULL);
 225                 else if (lc->presence_mode==LinphoneStatusOffline)
 226                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 227                 else if (lc->presence_mode==LinphoneStatusDoNotDisturb)
 228                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 229                 else if (lc->alt_contact!=NULL && lc->presence_mode==LinphoneStatusMoved)
 230                         sal_call_decline(h,SalReasonRedirect,lc->alt_contact);
 231                 sal_op_release(h);
 232                 return;
 233         }
 234         if (!linphone_core_can_we_add_call(lc)){/*busy*/
 235                 sal_call_decline(h,SalReasonBusy,NULL);
 236                 sal_op_release(h);
 237                 return;
 238         }
 239         from=sal_op_get_from(h);
 240         to=sal_op_get_to(h);
 241         from_addr=linphone_address_new(from);
 242         to_addr=linphone_address_new(to);
 243
 244         if ((already_a_call_with_remote_address(lc,from_addr) && prevent_colliding_calls) || already_a_call_pending(lc)){
 245                 ms_warning("Receiving another call while one is ringing or initiated, refusing this one with busy message.");
 246                 sal_call_decline(h,SalReasonBusy,NULL);
 247                 sal_op_release(h);
 248                 linphone_address_destroy(from_addr);
 249                 linphone_address_destroy(to_addr);
 250                 return;
 251         }
 252
 253         call=linphone_call_new_incoming(lc,from_addr,to_addr,h);
 254
 255         /* the call is acceptable so we can now add it to our list */
 256         linphone_core_add_call(lc,call);
 257         linphone_call_ref(call); /*prevent the call from being destroyed while we are notifying, if the user declines within the state callback */
 258
 259         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && (call->ice_session != NULL)) {
 260                 /* Defer ringing until the end of the ICE candidates gathering process. */
 261                 ms_message("Defer ringing to gather ICE candidates");
 262                 return;
 263         }
 264 #ifdef BUILD_UPNP
 265         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseUpnp) && (call->upnp_session != NULL)) {
 266                 /* Defer ringing until the end of the ICE candidates gathering process. */
 267                 ms_message("Defer ringing to gather uPnP candidates");
 268                 return;
 269         }
 270 #endif //BUILD_UPNP
 271
 272         linphone_core_notify_incoming_call(lc,call);
 273 }
 274
 275 static void call_ringing(SalOp *h){
 276         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 277         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(h);
 278         SalMediaDescription *md;
 279
 280         if (call==NULL) return;
 281
 282         if (lc->vtable.display_status)
 283                 lc->vtable.display_status(lc,_("Remote ringing."));
 284
 285         md=sal_call_get_final_media_description(h);
 286         if (md==NULL){
 287                 if (lc->ringstream && lc->dmfs_playing_start_time!=0){
 288                         ring_stop(lc->ringstream);
 289                         lc->ringstream=NULL;
 290                         lc->dmfs_playing_start_time=0;
 291                 }
 292                 if (lc->ringstream!=NULL) return;       /*already ringing !*/
 293                 if (lc->sound_conf.play_sndcard!=NULL){
 294                         MSSndCard *ringcard=lc->sound_conf.lsd_card ? lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
 295                         if (call->localdesc->streams[0].max_rate>0) ms_snd_card_set_preferred_sample_rate(ringcard, call->localdesc->streams[0].max_rate);
 296                         /*we release sound before playing ringback tone*/
 297                         if (call->audiostream)
 298                                 audio_stream_unprepare_sound(call->audiostream);
 299                         lc->ringstream=ring_start(lc->sound_conf.remote_ring,2000,ringcard);
 300                 }
 301                 ms_message("Remote ringing...");
 302                 if (lc->vtable.display_status)
 303                         lc->vtable.display_status(lc,_("Remote ringing..."));
 304                 linphone_call_set_state(call,LinphoneCallOutgoingRinging,"Remote ringing");
 305         }else{
 306                 /*accept early media */
 307                 if (call->audiostream && audio_stream_started(call->audiostream)){
 308                         /*streams already started */
 309                         ms_message("Early media already started.");
 310                         return;
 311                 }
 312                 if (lc->vtable.show) lc->vtable.show(lc);
 313                 if (lc->vtable.display_status)
 314                         lc->vtable.display_status(lc,_("Early media."));
 315                 linphone_call_set_state(call,LinphoneCallOutgoingEarlyMedia,"Early media");
 316                 if (lc->ringstream!=NULL){
 317                         ring_stop(lc->ringstream);
 318                         lc->ringstream=NULL;
 319                 }
 320                 ms_message("Doing early media...");
 321                 linphone_core_update_streams(lc,call,md);
 322         }
 323 }
 324
 325 /*
 326  * could be reach :
 327  *  - when the call is accepted
 328  *  - when a request is accepted (pause, resume)
 329  */
 330 static void call_accepted(SalOp *op){
 331         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 332         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 333         SalMediaDescription *md;
 334
 335         if (call==NULL){
 336                 ms_warning("No call to accept.");
 337                 return ;
 338         }
 339
 340         /* Handle remote ICE attributes if any. */
 341         if (call->ice_session != NULL) {
 342                 linphone_core_update_ice_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 343         }
 344 #ifdef BUILD_UPNP
 345         if (call->upnp_session != NULL) {
 346                 linphone_core_update_upnp_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 347         }
 348 #endif //BUILD_UPNP
 349
 350         md=sal_call_get_final_media_description(op);
 351         call->params.has_video &= linphone_core_media_description_contains_video_stream(md);
 352
 353         if (call->state==LinphoneCallOutgoingProgress ||
 354             call->state==LinphoneCallOutgoingRinging ||
 355             call->state==LinphoneCallOutgoingEarlyMedia){
 356                 linphone_call_set_state(call,LinphoneCallConnected,"Connected");
 357                 if (call->referer) linphone_core_notify_refer_state(lc,call->referer,call);
 358         }
 359         if (md && !sal_media_description_empty(md) && !linphone_core_incompatible_security(lc,md)){
 360                 if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
 361                     sal_media_description_has_dir(md,SalStreamInactive)){
 362                         if (lc->vtable.display_status){
 363                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 364                                 char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
 365                                 lc->vtable.display_status(lc,msg);
 366                                 ms_free(tmp);
 367                                 ms_free(msg);
 368                         }
 369                         linphone_core_update_streams (lc,call,md);
 370                         linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 371                         if (call->refer_pending)
 372                                 linphone_core_start_refered_call(lc,call);
 373                 }else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 374                         /*we are put on hold when the call is initially accepted */
 375                         if (lc->vtable.display_status){
 376                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 377                                 char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
 378                                 lc->vtable.display_status(lc,msg);
 379                                 ms_free(tmp);
 380                                 ms_free(msg);
 381                         }
 382                         linphone_core_update_streams (lc,call,md);
 383                         linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
 384                 }else{
 385                         if (call->state!=LinphoneCallUpdating){
 386                                 if (call->state==LinphoneCallResuming){
 387                                         if (lc->vtable.display_status){
 388                                                 lc->vtable.display_status(lc,_("Call resumed."));
 389                                         }
 390                                 }else{
 391                                         if (lc->vtable.display_status){
 392                                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 393                                                 char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
 394                                                 lc->vtable.display_status(lc,msg);
 395                                                 ms_free(tmp);
 396                                                 ms_free(msg);
 397                                         }
 398                                 }
 399                         }
 400                         linphone_core_update_streams (lc,call,md);
 401                         if (!call->current_params.in_conference)
 402                                 lc->current_call=call;
 403                         linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 404                 }
 405         }else{
 406                 /*send a bye*/
 407                 ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
 408                 linphone_core_abort_call(lc,call,_("Incompatible, check codecs or security settings..."));
 409         }
 410 }
 411
 412 static void call_ack(SalOp *op){
 413         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 414         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 415         if (call==NULL){
 416                 ms_warning("No call to be ACK'd");
 417                 return ;
 418         }
 419         if (call->media_pending){
 420                 SalMediaDescription *md=sal_call_get_final_media_description(op);
 421                 if (md && !sal_media_description_empty(md)){
 422                         linphone_core_update_streams (lc,call,md);
 423                         linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
 424                 }else{
 425                         /*send a bye*/
 426                         ms_error("Incompatible SDP response received in ACK, need to abort the call");
 427                         linphone_core_abort_call(lc,call,"No codec intersection");
 428                         return;
 429                 }
 430         }
 431 }
 432
 433 static void call_accept_update(LinphoneCore *lc, LinphoneCall *call){
 434         SalMediaDescription *md;
 435         SalMediaDescription *rmd=sal_call_get_remote_media_description(call->op);
 436         if ((rmd!=NULL) && (call->ice_session!=NULL)) {
 437                 linphone_core_update_ice_from_remote_media_description(call,rmd);
 438                 linphone_core_update_local_media_description_from_ice(call->localdesc,call->ice_session);
 439         }
 440 #ifdef BUILD_UPNP
 441         if(call->upnp_session != NULL) {
 442                 linphone_core_update_upnp_from_remote_media_description(call, rmd);
 443                 linphone_core_update_local_media_description_from_upnp(call->localdesc,call->upnp_session);
 444         }
 445 #endif //BUILD_UPNP
 446         sal_call_accept(call->op);
 447         md=sal_call_get_final_media_description(call->op);
 448         if (md && !sal_media_description_empty(md))
 449                 linphone_core_update_streams(lc,call,md);
 450 }
 451
 452 static void call_resumed(LinphoneCore *lc, LinphoneCall *call){
 453         call_accept_update(lc,call);
 454         if(lc->vtable.display_status)
 455                 lc->vtable.display_status(lc,_("We have been resumed."));
 456         linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
 457         linphone_call_set_transfer_state(call, LinphoneCallIdle);
 458 }
 459
 460 static void call_paused_by_remote(LinphoneCore *lc, LinphoneCall *call){
 461         call_accept_update(lc,call);
 462         /* we are being paused */
 463         if(lc->vtable.display_status)
 464                 lc->vtable.display_status(lc,_("We are paused by other party."));
 465         linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
 466 }
 467
 468 static void call_updated_by_remote(LinphoneCore *lc, LinphoneCall *call){
 469         if(lc->vtable.display_status)
 470                 lc->vtable.display_status(lc,_("Call is updated by remote."));
 471         call->defer_update=FALSE;
 472         linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
 473         if (call->defer_update==FALSE){
 474                 linphone_core_accept_call_update(lc,call,NULL);
 475         }
 476 }
 477
 478 /* this callback is called when an incoming re-INVITE modifies the session*/
 479 static void call_updating(SalOp *op){
 480         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 481         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 482         SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
 483
 484         if (rmd==NULL){
 485                 /* case of a reINVITE without SDP */
 486                 call_accept_update(lc,call);
 487                 call->media_pending=TRUE;
 488                 return;
 489         }
 490
 491         switch(call->state){
 492                 case LinphoneCallPausedByRemote:
 493                         if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
 494                                 call_resumed(lc,call);
 495                         }else call_paused_by_remote(lc,call);
 496                 break;
 497                 case LinphoneCallStreamsRunning:
 498                 case LinphoneCallConnected:
 499                         if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
 500                                 call_paused_by_remote(lc,call);
 501                         }else{
 502                                 call_updated_by_remote(lc,call);
 503                         }
 504                 break;
 505                 default:
 506                         call_accept_update(lc,call);
 507         }
 508 }
 509
 510 static void call_terminated(SalOp *op, const char *from){
 511         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 512         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 513
 514         if (call==NULL) return;
 515
 516         switch(linphone_call_get_state(call)){
 517                 case LinphoneCallEnd:
 518                 case LinphoneCallError:
 519                         ms_warning("call_terminated: ignoring.");
 520                         return;
 521                 break;
 522                 case LinphoneCallIncomingReceived:
 523                 case LinphoneCallIncomingEarlyMedia:
 524                         call->reason=LinphoneReasonNotAnswered;
 525                 break;
 526                 default:
 527                 break;
 528         }
 529         ms_message("Current call terminated...");
 530         //we stop the call only if we have this current call or if we are in call
 531         if (lc->ringstream!=NULL && ( (ms_list_size(lc->calls)  == 1) || linphone_core_in_call(lc) )) {
 532                 ring_stop(lc->ringstream);
 533                 lc->ringstream=NULL;
 534         }
 535         linphone_call_stop_media_streams(call);
 536         if (lc->vtable.show!=NULL)
 537                 lc->vtable.show(lc);
 538         if (lc->vtable.display_status!=NULL)
 539                 lc->vtable.display_status(lc,_("Call terminated."));
 540
 541 #ifdef BUILD_UPNP
 542         linphone_call_delete_upnp_session(call);
 543 #endif //BUILD_UPNP
 544
 545         linphone_call_set_state(call, LinphoneCallEnd,"Call ended");
 546 }
 547
 548 static void call_failure(SalOp *op, SalError error, SalReason sr, const char *details, int code){
 549         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 550         char *msg486=_("User is busy.");
 551         char *msg480=_("User is temporarily unavailable.");
 552         /*char *retrymsg=_("%s. Retry after %i minute(s).");*/
 553         char *msg600=_("User does not want to be disturbed.");
 554         char *msg603=_("Call declined.");
 555         const char *msg=details;
 556         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 557
 558         if (call==NULL){
 559                 ms_warning("Call faillure reported on already cleaned call ?");
 560                 return ;
 561         }
 562
 563         if (lc->vtable.show) lc->vtable.show(lc);
 564
 565         if (error==SalErrorNoResponse){
 566                 msg=_("No response.");
 567                 if (lc->vtable.display_status)
 568                         lc->vtable.display_status(lc,msg);
 569         }else if (error==SalErrorProtocol){
 570                 msg=details ? details : _("Protocol error.");
 571                 if (lc->vtable.display_status)
 572                         lc->vtable.display_status(lc, msg);
 573         }else if (error==SalErrorFailure){
 574                 switch(sr){
 575                         case SalReasonDeclined:
 576                                 msg=msg603;
 577                                 if (lc->vtable.display_status)
 578                                         lc->vtable.display_status(lc,msg603);
 579                         break;
 580                         case SalReasonBusy:
 581                                 msg=msg486;
 582                                 if (lc->vtable.display_status)
 583                                         lc->vtable.display_status(lc,msg486);
 584                         break;
 585                         case SalReasonRedirect:
 586                                 msg=_("Redirected");
 587                                 if (lc->vtable.display_status)
 588                                         lc->vtable.display_status(lc,msg);
 589                         break;
 590                         case SalReasonTemporarilyUnavailable:
 591                                 msg=msg480;
 592                                 if (lc->vtable.display_status)
 593                                         lc->vtable.display_status(lc,msg480);
 594                         break;
 595                         case SalReasonNotFound:
 596                                 if (lc->vtable.display_status)
 597                                         lc->vtable.display_status(lc,msg);
 598                         break;
 599                         case SalReasonDoNotDisturb:
 600                                 msg=msg600;
 601                                 if (lc->vtable.display_status)
 602                                         lc->vtable.display_status(lc,msg600);
 603                         break;
 604                         case SalReasonMedia:
 605                         //media_encryption_mandatory
 606                                 if (call->params.media_encryption == LinphoneMediaEncryptionSRTP &&
 607                                         !linphone_core_is_media_encryption_mandatory(lc)) {
 608                                         int i;
 609                                         ms_message("Outgoing call failed with SRTP (SAVP) enabled - retrying with AVP");
 610                                         linphone_call_stop_media_streams(call);
 611                                         if (call->state==LinphoneCallOutgoingInit || call->state==LinphoneCallOutgoingProgress){
 612                                                 /* clear SRTP local params */
 613                                                 call->params.media_encryption = LinphoneMediaEncryptionNone;
 614                                                 for(i=0; i<call->localdesc->nstreams; i++) {
 615                                                         call->localdesc->streams[i].proto = SalProtoRtpAvp;
 616                                                         memset(call->localdesc->streams[i].crypto, 0, sizeof(call->localdesc->streams[i].crypto));
 617                                                 }
 618                                                 linphone_core_start_invite(lc, call);
 619                                         }
 620                                         return;
 621                                 }
 622                                 msg=_("Incompatible media parameters.");
 623                                 if (lc->vtable.display_status)
 624                                         lc->vtable.display_status(lc,msg);
 625                         break;
 626                         default:
 627                                 if (lc->vtable.display_status)
 628                                         lc->vtable.display_status(lc,_("Call failed."));
 629                 }
 630         }
 631
 632         if (lc->ringstream!=NULL) {
 633                 ring_stop(lc->ringstream);
 634                 lc->ringstream=NULL;
 635         }
 636         linphone_call_stop_media_streams (call);
 637         if (call->referer && linphone_call_get_state(call->referer)==LinphoneCallPaused && call->referer->was_automatically_paused){
 638                 /*resume to the call that send us the refer automatically*/
 639                 linphone_core_resume_call(lc,call->referer);
 640         }
 641
 642 #ifdef BUILD_UPNP
 643         linphone_call_delete_upnp_session(call);
 644 #endif //BUILD_UPNP
 645
 646         if (sr == SalReasonDeclined) {
 647                 call->reason=LinphoneReasonDeclined;
 648                 linphone_call_set_state(call,LinphoneCallEnd,"Call declined.");
 649         } else if (sr == SalReasonNotFound) {
 650                 call->reason=LinphoneReasonNotFound;
 651                 linphone_call_set_state(call,LinphoneCallError,"User not found.");
 652         } else {
 653                 linphone_call_set_state(call,LinphoneCallError,msg);
 654         }
 655 }
 656
 657 static void call_released(SalOp *op){
 658         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 659         if (call!=NULL){
 660                 linphone_call_set_state(call,LinphoneCallReleased,"Call released");
 661         }else ms_error("call_released() for already destroyed call ?");
 662 }
 663
 664 static void auth_requested(SalOp *h, const char *realm, const char *username){
 665         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 666         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 667         LinphoneCall *call=is_a_linphone_call(sal_op_get_user_pointer(h));
 668
 669         if (call && call->ping_op==h){
 670                 /*don't request authentication for ping requests. Their purpose is just to get any
 671                  * answer to get the Via's received and rport parameters.
 672                  */
 673                 ms_message("auth_requested(): ignored for ping request.");
 674                 return;
 675         }
 676
 677         ms_message("auth_requested() for realm=%s, username=%s",realm,username);
 678
 679         if (ai && ai->works==FALSE && ai->usecount>=3){
 680                 /*case we tried 3 times to authenticate, without success */
 681                 /*Better is to stop (implemeted below in else statement), and retry later*/
 682                 if (ms_time(NULL)-ai->last_use_time>30){
 683                         ai->usecount=0; /*so that we can allow to retry */
 684                 }
 685         }
 686
 687         if (ai && (ai->works || ai->usecount<3)){
 688                 SalAuthInfo sai;
 689                 sai.username=ai->username;
 690                 sai.userid=ai->userid;
 691                 sai.realm=ai->realm;
 692                 sai.password=ai->passwd;
 693                 ms_message("auth_requested(): authenticating realm=%s, username=%s",realm,username);
 694                 sal_op_authenticate(h,&sai);
 695                 ai->usecount++;
 696                 ai->last_use_time=ms_time(NULL);
 697         }else{
 698                 if (ai && ai->works==FALSE) {
 699                         sal_op_cancel_authentication(h);
 700                 }
 701                 if (lc->vtable.auth_info_requested)
 702                         lc->vtable.auth_info_requested(lc,realm,username);
 703         }
 704 }
 705
 706 static void auth_success(SalOp *h, const char *realm, const char *username){
 707         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 708         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 709         if (ai){
 710                 ms_message("%s/%s authentication works.",realm,username);
 711                 ai->works=TRUE;
 712         }
 713 }
 714
 715 static void register_success(SalOp *op, bool_t registered){
 716         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 717         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 718         char *msg;
 719
 720         if (cfg->deletion_date!=0){
 721                 ms_message("Registration success for removed proxy config, ignored");
 722                 return;
 723         }
 724         linphone_proxy_config_set_error(cfg,LinphoneReasonNone);
 725         linphone_proxy_config_set_state(cfg, registered ? LinphoneRegistrationOk : LinphoneRegistrationCleared ,
 726                                         registered ? "Registration sucessful" : "Unregistration done");
 727         if (lc->vtable.display_status){
 728                 if (registered) msg=ms_strdup_printf(_("Registration on %s successful."),sal_op_get_proxy(op));
 729                 else msg=ms_strdup_printf(_("Unregistration on %s done."),sal_op_get_proxy(op));
 730                 lc->vtable.display_status(lc,msg);
 731                 ms_free(msg);
 732         }
 733
 734 }
 735
 736 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details){
 737         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 738         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 739
 740         if (cfg==NULL){
 741                 ms_warning("Registration failed for unknown proxy config.");
 742                 return ;
 743         }
 744         if (cfg->deletion_date!=0){
 745                 ms_message("Registration failed for removed proxy config, ignored");
 746                 return;
 747         }
 748         if (details==NULL)
 749                 details=_("no response timeout");
 750
 751         if (lc->vtable.display_status) {
 752                 char *msg=ortp_strdup_printf(_("Registration on %s failed: %s"),sal_op_get_proxy(op),details  );
 753                 lc->vtable.display_status(lc,msg);
 754                 ms_free(msg);
 755         }
 756         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 757                 linphone_proxy_config_set_error(cfg, LinphoneReasonBadCredentials);
 758         } else if (error == SalErrorNoResponse) {
 759                 linphone_proxy_config_set_error(cfg, LinphoneReasonNoResponse);
 760         }
 761         linphone_proxy_config_set_state(cfg,LinphoneRegistrationFailed,details);
 762         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 763                 const char *realm=NULL,*username=NULL;
 764                 if (sal_op_get_auth_requested(op,&realm,&username)==0){
 765                         if (lc->vtable.auth_info_requested)
 766                                 lc->vtable.auth_info_requested(lc,realm,username);
 767                 }
 768         }
 769 }
 770
 771 static void vfu_request(SalOp *op){
 772 #ifdef VIDEO_ENABLED
 773         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 774         if (call==NULL){
 775                 ms_warning("VFU request but no call !");
 776                 return ;
 777         }
 778         if (call->videostream)
 779                 video_stream_send_vfu(call->videostream);
 780 #endif
 781 }
 782
 783 static void dtmf_received(SalOp *op, char dtmf){
 784         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 785         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 786         if (lc->vtable.dtmf_received != NULL)
 787                 lc->vtable.dtmf_received(lc, call, dtmf);
 788 }
 789
 790 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 791         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 792         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 793         if (call){
 794                 if (call->refer_to!=NULL){
 795                         ms_free(call->refer_to);
 796                 }
 797                 call->refer_to=ms_strdup(referto);
 798                 call->refer_pending=TRUE;
 799                 linphone_call_set_state(call,LinphoneCallRefered,"Refered");
 800                 if (lc->vtable.display_status){
 801                         char *msg=ms_strdup_printf(_("We are transferred to %s"),referto);
 802                         lc->vtable.display_status(lc,msg);
 803                         ms_free(msg);
 804                 }
 805                 if (call->state!=LinphoneCallPaused){
 806                         ms_message("Automatically pausing current call to accept transfer.");
 807                         linphone_core_pause_call(lc,call);
 808                         call->was_automatically_paused=TRUE;
 809                         /*then we will start the refered when the pause is accepted, in order to serialize transactions within the dialog.
 810                          * Indeed we need to avoid to send a NOTIFY to inform about of state of the refered call while the pause isn't completed.
 811                         **/
 812                 }else linphone_core_start_refered_call(lc,call);
 813         }else if (lc->vtable.refer_received){
 814                 lc->vtable.refer_received(lc,referto);
 815         }
 816 }
 817
 818 static bool_t is_duplicate_msg(LinphoneCore *lc, const char *msg_id){
 819         MSList *elem=lc->last_recv_msg_ids;
 820         MSList *tail=NULL;
 821         int i;
 822         bool_t is_duplicate=FALSE;
 823         for(i=0;elem!=NULL;elem=elem->next,i++){
 824                 if (strcmp((const char*)elem->data,msg_id)==0){
 825                         is_duplicate=TRUE;
 826                 }
 827                 tail=elem;
 828         }
 829         if (!is_duplicate){
 830                 lc->last_recv_msg_ids=ms_list_prepend(lc->last_recv_msg_ids,ms_strdup(msg_id));
 831         }
 832         if (i>=10){
 833                 ms_free(tail->data);
 834                 lc->last_recv_msg_ids=ms_list_remove_link(lc->last_recv_msg_ids,tail);
 835         }
 836         return is_duplicate;
 837 }
 838
 839
 840 static void text_received(Sal *sal, const SalMessage *msg){
 841         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 842         if (is_duplicate_msg(lc,msg->message_id)==FALSE){
 843                 linphone_core_message_received(lc,msg->from,msg->text,msg->url);
 844         }
 845 }
 846
 847 static void notify(SalOp *op, const char *from, const char *msg){
 848         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 849         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 850         ms_message("get a %s notify from %s",msg,from);
 851         if(lc->vtable.notify_recv)
 852                 lc->vtable.notify_recv(lc,call,from,msg);
 853 }
 854
 855 static void notify_presence(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg){
 856         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 857         linphone_notify_recv(lc,op,ss,status);
 858 }
 859
 860 static void subscribe_received(SalOp *op, const char *from){
 861         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 862         linphone_subscription_new(lc,op,from);
 863 }
 864
 865 static void subscribe_closed(SalOp *op, const char *from){
 866         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 867         linphone_subscription_closed(lc,op);
 868 }
 869
 870 static void ping_reply(SalOp *op){
 871         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 872         ms_message("ping reply !");
 873         if (call){
 874                 if (call->state==LinphoneCallOutgoingInit){
 875                         call->ping_replied=TRUE;
 876                         linphone_core_proceed_with_invite_if_ready(call->core,call,NULL);
 877                 }
 878         }
 879         else
 880         {
 881                 ms_warning("ping reply without call attached...");
 882         }
 883 }
 884
 885 static void notify_refer(SalOp *op, SalReferStatus status){
 886         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 887         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 888         LinphoneCallState cstate;
 889         if (call==NULL) {
 890                 ms_warning("Receiving notify_refer for unknown call.");
 891                 return ;
 892         }
 893         switch(status){
 894                 case SalReferTrying:
 895                         cstate=LinphoneCallOutgoingProgress;
 896                 break;
 897                 case SalReferSuccess:
 898                         cstate=LinphoneCallConnected;
 899                 break;
 900                 case SalReferFailed:
 901                         cstate=LinphoneCallError;
 902                 break;
 903                 default:
 904                         cstate=LinphoneCallError;
 905         }
 906         linphone_call_set_transfer_state(call, cstate);
 907         if (cstate==LinphoneCallConnected){
 908                 /*automatically terminate the call as the transfer is complete.*/
 909                 linphone_core_terminate_call(lc,call);
 910         }
 911 }
 912
 913 static LinphoneChatMessageState chatStatusSal2Linphone(SalTextDeliveryStatus status){
 914         switch(status){
 915                 case SalTextDeliveryInProgress:
 916                         return LinphoneChatMessageStateInProgress;
 917                 case SalTextDeliveryDone:
 918                         return LinphoneChatMessageStateDelivered;
 919                 case SalTextDeliveryFailed:
 920                         return LinphoneChatMessageStateNotDelivered;
 921         }
 922         return LinphoneChatMessageStateIdle;
 923 }
 924
 925 static int op_equals(LinphoneCall *a, SalOp *b) {
 926         return a->op !=b; /*return 0 if equals*/
 927 }
 928 static void text_delivery_update(SalOp *op, SalTextDeliveryStatus status){
 929         LinphoneChatMessage *chat_msg=(LinphoneChatMessage* )sal_op_get_user_pointer(op);
 930         const MSList* calls = linphone_core_get_calls(chat_msg->chat_room->lc);
 931
 932         if (chat_msg && chat_msg->cb) {
 933                 chat_msg->cb(chat_msg
 934                         ,chatStatusSal2Linphone(status)
 935                         ,chat_msg->cb_ud);
 936         }
 937         linphone_chat_message_destroy(chat_msg);
 938
 939         if (!ms_list_find_custom((MSList*)calls, (MSCompareFunc) op_equals, op)) {
 940                 /*op was only create for messaging purpose, destroying*/
 941                 sal_op_release(op);
 942         }
 943 }
 944
 945 SalCallbacks linphone_sal_callbacks={
 946         call_received,
 947         call_ringing,
 948         call_accepted,
 949         call_ack,
 950         call_updating,
 951         call_terminated,
 952         call_failure,
 953         call_released,
 954         auth_requested,
 955         auth_success,
 956         register_success,
 957         register_failure,
 958         vfu_request,
 959         dtmf_received,
 960         refer_received,
 961         text_received,
 962         text_delivery_update,
 963         notify,
 964         notify_presence,
 965         notify_refer,
 966         subscribe_received,
 967         subscribe_closed,
 968         ping_reply,
 969 };
 970
 971