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