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