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 bool_t media_parameters_changed(LinphoneCall *call, SalMediaDescription *oldmd, SalMediaDescription *newmd){
  31         if (call->params.in_conference!=call->current_params.in_conference) return TRUE;
  32         return !sal_media_description_equals(oldmd,newmd)  || call->up_bw!=linphone_core_get_upload_bandwidth(call->core);
  33 }
  34
  35 void linphone_core_update_streams(LinphoneCore *lc, LinphoneCall *call, SalMediaDescription *new_md){
  36         SalMediaDescription *oldmd=call->resultdesc;
  37
  38         if (lc->ringstream!=NULL){
  39                 ring_stop(lc->ringstream);
  40                 lc->ringstream=NULL;
  41         }
  42         if (new_md!=NULL){
  43                 sal_media_description_ref(new_md);
  44                 call->media_pending=FALSE;
  45         }else{
  46                 call->media_pending=TRUE;
  47         }
  48         call->resultdesc=new_md;
  49         if (call->audiostream && call->audiostream->ticker){
  50                 /* we already started media: check if we really need to restart it*/
  51                 if (oldmd){
  52                         if (!media_parameters_changed(call,oldmd,new_md) && !call->playing_ringbacktone){
  53                                 /*as nothing has changed, keep the oldmd */
  54                                 call->resultdesc=oldmd;
  55                                 sal_media_description_unref(new_md);
  56                                 if (call->all_muted){
  57                                         ms_message("Early media finished, unmuting inputs...");
  58                                         /*we were in early media, now we want to enable real media */
  59                                         linphone_call_enable_camera (call,linphone_call_camera_enabled (call));
  60                                         if (call->audiostream)
  61                                                 linphone_core_mute_mic (lc, linphone_core_is_mic_muted(lc));
  62 #ifdef VIDEO_ENABLED
  63                                         if (call->videostream && call->camera_active)
  64                                                 video_stream_change_camera(call->videostream,lc->video_conf.device );
  65 #endif
  66                                 }
  67                                 ms_message("No need to restart streams, SDP is unchanged.");
  68                                 return;
  69                         }else{
  70                                 ms_message("Media descriptions are different, need to restart the streams.");
  71                         }
  72                 }
  73                 linphone_call_stop_media_streams (call);
  74                 linphone_call_init_media_streams (call);
  75         }
  76         if (oldmd)
  77                 sal_media_description_unref(oldmd);
  78
  79         if (new_md) {
  80                 bool_t all_muted=FALSE;
  81                 bool_t send_ringbacktone=FALSE;
  82
  83                 if (call->audiostream==NULL){
  84                         /*this happens after pausing the call locally. The streams is destroyed and then we wait the 200Ok to recreate it*/
  85                         linphone_call_init_media_streams (call);
  86                 }
  87                 if (call->state==LinphoneCallIncomingEarlyMedia && linphone_core_get_remote_ringback_tone (lc)!=NULL){
  88                         send_ringbacktone=TRUE;
  89                 }
  90                 if (call->state==LinphoneCallIncomingEarlyMedia ||
  91                     (call->state==LinphoneCallOutgoingEarlyMedia && !call->params.real_early_media)){
  92                         all_muted=TRUE;
  93                 }
  94                 linphone_call_start_media_streams(call,all_muted,send_ringbacktone);
  95         }
  96 }
  97 #if 0
  98 static bool_t is_duplicate_call(LinphoneCore *lc, const LinphoneAddress *from, const LinphoneAddress *to){
  99         MSList *elem;
 100         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 101                 LinphoneCall *call=(LinphoneCall*)elem->data;
 102                 if (linphone_address_weak_equal(call->log->from,from) &&
 103                     linphone_address_weak_equal(call->log->to, to)){
 104                         return TRUE;
 105                 }
 106         }
 107         return FALSE;
 108 }
 109 #endif
 110
 111 static bool_t already_a_call_with_remote_address(const LinphoneCore *lc, const LinphoneAddress *remote) {
 112         ms_warning(" searching for already_a_call_with_remote_address.");
 113
 114         MSList *elem;
 115         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 116                 const LinphoneCall *call=(LinphoneCall*)elem->data;
 117                 const LinphoneAddress *cRemote=linphone_call_get_remote_address(call);
 118                 if (linphone_address_weak_equal(cRemote,remote)) {
 119                         ms_warning("already_a_call_with_remote_address found.");
 120                         return TRUE;
 121                 }
 122         }
 123         return FALSE;
 124 }
 125
 126 static bool_t already_a_call_pending(LinphoneCore *lc){
 127         MSList *elem;
 128         for(elem=lc->calls;elem!=NULL;elem=elem->next){
 129                 LinphoneCall *call=(LinphoneCall*)elem->data;
 130                 if (call->state==LinphoneCallIncomingReceived
 131                     || call->state==LinphoneCallOutgoingInit
 132                     || call->state==LinphoneCallOutgoingProgress
 133                     || call->state==LinphoneCallOutgoingEarlyMedia
 134                     || call->state==LinphoneCallOutgoingRinging){
 135                         return TRUE;
 136                 }
 137         }
 138         return FALSE;
 139 }
 140
 141 static void call_received(SalOp *h){
 142         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 143         LinphoneCall *call;
 144         const char *from,*to;
 145         LinphoneAddress *from_addr, *to_addr;
 146         bool_t prevent_colliding_calls=lp_config_get_int(lc->config,"sip","prevent_colliding_calls",TRUE);
 147
 148         /* first check if we can answer successfully to this invite */
 149         if (lc->presence_mode==LinphoneStatusBusy ||
 150             lc->presence_mode==LinphoneStatusOffline ||
 151             lc->presence_mode==LinphoneStatusDoNotDisturb ||
 152             lc->presence_mode==LinphoneStatusMoved){
 153                 if (lc->presence_mode==LinphoneStatusBusy )
 154                         sal_call_decline(h,SalReasonBusy,NULL);
 155                 else if (lc->presence_mode==LinphoneStatusOffline)
 156                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 157                 else if (lc->presence_mode==LinphoneStatusDoNotDisturb)
 158                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 159                 else if (lc->alt_contact!=NULL && lc->presence_mode==LinphoneStatusMoved)
 160                         sal_call_decline(h,SalReasonRedirect,lc->alt_contact);
 161                 sal_op_release(h);
 162                 return;
 163         }
 164         if (!linphone_core_can_we_add_call(lc)){/*busy*/
 165                 sal_call_decline(h,SalReasonBusy,NULL);
 166                 sal_op_release(h);
 167                 return;
 168         }
 169         from=sal_op_get_from(h);
 170         to=sal_op_get_to(h);
 171         from_addr=linphone_address_new(from);
 172         to_addr=linphone_address_new(to);
 173
 174         if ((already_a_call_with_remote_address(lc,from_addr) && prevent_colliding_calls) || already_a_call_pending(lc)){
 175                 ms_warning("Receiving another call while one is ringing or initiated, refusing this one with busy message.");
 176                 sal_call_decline(h,SalReasonBusy,NULL);
 177                 sal_op_release(h);
 178                 linphone_address_destroy(from_addr);
 179                 linphone_address_destroy(to_addr);
 180                 return;
 181         }
 182
 183         call=linphone_call_new_incoming(lc,from_addr,to_addr,h);
 184         sal_call_set_local_media_description(h,call->localdesc);
 185
 186         /* the call is acceptable so we can now add it to our list */
 187         linphone_core_add_call(lc,call);
 188         linphone_call_ref(call); /*prevent the call from being destroyed while we are notifying, if the user declines within the state callback */
 189
 190         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseIce) && sal_op_get_ice_session(call->op)) {
 191                 /* Defer ringing until the end of the ICE candidates gathering process. */
 192                 ms_message("Defer ringing to gather ICE candidates");
 193                 return;
 194         }
 195
 196         linphone_core_notify_incoming_call(lc,call);
 197 }
 198
 199 static void call_ringing(SalOp *h){
 200         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 201         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(h);
 202         SalMediaDescription *md;
 203
 204         if (call==NULL) return;
 205
 206         if (lc->vtable.display_status)
 207                 lc->vtable.display_status(lc,_("Remote ringing."));
 208
 209         md=sal_call_get_final_media_description(h);
 210         if (md==NULL){
 211                 if (lc->ringstream && lc->dmfs_playing_start_time!=0){
 212                         ring_stop(lc->ringstream);
 213                         lc->ringstream=NULL;
 214                         lc->dmfs_playing_start_time=0;
 215                 }
 216                 if (lc->ringstream!=NULL) return;       /*already ringing !*/
 217                 if (lc->sound_conf.play_sndcard!=NULL){
 218                         MSSndCard *ringcard=lc->sound_conf.lsd_card ? lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
 219                         if (call->localdesc->streams[0].max_rate>0) ms_snd_card_set_preferred_sample_rate(ringcard, call->localdesc->streams[0].max_rate);
 220                         /*we release sound before playing ringback tone*/
 221                         if (call->audiostream)
 222                                 audio_stream_unprepare_sound(call->audiostream);
 223                         lc->ringstream=ring_start(lc->sound_conf.remote_ring,2000,ringcard);
 224                 }
 225                 ms_message("Remote ringing...");
 226                 if (lc->vtable.display_status)
 227                         lc->vtable.display_status(lc,_("Remote ringing..."));
 228                 linphone_call_set_state(call,LinphoneCallOutgoingRinging,"Remote ringing");
 229         }else{
 230                 /*accept early media */
 231                 if (call->audiostream && audio_stream_started(call->audiostream)){
 232                         /*streams already started */
 233                         ms_message("Early media already started.");
 234                         return;
 235                 }
 236                 if (lc->vtable.show) lc->vtable.show(lc);
 237                 if (lc->vtable.display_status)
 238                         lc->vtable.display_status(lc,_("Early media."));
 239                 linphone_call_set_state(call,LinphoneCallOutgoingEarlyMedia,"Early media");
 240                 if (lc->ringstream!=NULL){
 241                         ring_stop(lc->ringstream);
 242                         lc->ringstream=NULL;
 243                 }
 244                 ms_message("Doing early media...");
 245                 linphone_core_update_streams(lc,call,md);
 246         }
 247 }
 248
 249 /*
 250  * could be reach :
 251  *  - when the call is accepted
 252  *  - when a request is accepted (pause, resume)
 253  */
 254 static void call_accepted(SalOp *op){
 255         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 256         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 257         IceSession *ice_session=sal_op_get_ice_session(op);
 258         SalMediaDescription *md;
 259
 260         if (call==NULL){
 261                 ms_warning("No call to accept.");
 262                 return ;
 263         }
 264
 265         if (ice_session == NULL) {
 266                 /* Ensure the ICE check list pointers for the call streams are resetted to prevent crashes */
 267                 if (call->audiostream != NULL) call->audiostream->ice_check_list = NULL;
 268                 if (call->videostream != NULL) call->videostream->ice_check_list = NULL;
 269         }
 270
 271         md=sal_call_get_final_media_description(op);
 272
 273         if (call->state==LinphoneCallOutgoingProgress ||
 274             call->state==LinphoneCallOutgoingRinging ||
 275             call->state==LinphoneCallOutgoingEarlyMedia){
 276                 linphone_call_set_state(call,LinphoneCallConnected,"Connected");
 277                 if (call->referer) linphone_core_notify_refer_state(lc,call->referer,call);
 278         }
 279         if (md && !sal_media_description_empty(md)){
 280                 if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
 281                     sal_media_description_has_dir(md,SalStreamInactive)){
 282                         if (lc->vtable.display_status){
 283                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 284                                 char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
 285                                 lc->vtable.display_status(lc,msg);
 286                                 ms_free(tmp);
 287                                 ms_free(msg);
 288                         }
 289                         linphone_core_update_streams (lc,call,md);
 290                         linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 291                         if (call->refer_pending)
 292                                 linphone_core_start_refered_call(lc,call);
 293                 }else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 294                         /*we are put on hold when the call is initially accepted */
 295                         if (lc->vtable.display_status){
 296                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 297                                 char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
 298                                 lc->vtable.display_status(lc,msg);
 299                                 ms_free(tmp);
 300                                 ms_free(msg);
 301                         }
 302                         linphone_core_update_streams (lc,call,md);
 303                         linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
 304                 }else{
 305                         if (call->state==LinphoneCallStreamsRunning){
 306                                 /*media was running before, the remote as acceted a call modification (that is
 307                                         a reinvite made by us. We must notify the application this reinvite was accepted*/
 308                                 linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
 309                         }else{
 310                                 if (call->state==LinphoneCallResuming){
 311                                         if (lc->vtable.display_status){
 312                                                 lc->vtable.display_status(lc,_("Call resumed."));
 313                                         }
 314                                 }else{
 315                                         if (lc->vtable.display_status){
 316                                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 317                                                 char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
 318                                                 lc->vtable.display_status(lc,msg);
 319                                                 ms_free(tmp);
 320                                                 ms_free(msg);
 321                                         }
 322                                 }
 323                         }
 324                         linphone_core_update_streams (lc,call,md);
 325                         if (!call->current_params.in_conference)
 326                                 lc->current_call=call;
 327                         linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 328                 }
 329         }else{
 330                 /*send a bye*/
 331                 ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
 332                 linphone_core_abort_call(lc,call,_("Incompatible, check codecs..."));
 333         }
 334 }
 335
 336 static void call_ack(SalOp *op){
 337         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 338         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 339         if (call==NULL){
 340                 ms_warning("No call to be ACK'd");
 341                 return ;
 342         }
 343         if (call->media_pending){
 344                 SalMediaDescription *md=sal_call_get_final_media_description(op);
 345                 if (md && !sal_media_description_empty(md)){
 346                         if (call->state==LinphoneCallStreamsRunning){
 347                                 /*media was running before, the remote as acceted a call modification (that is
 348                                         a reinvite made by us. We must notify the application this reinvite was accepted*/
 349                                 linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
 350                         }
 351                         linphone_core_update_streams (lc,call,md);
 352                         linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
 353                 }else{
 354                         /*send a bye*/
 355                         ms_error("Incompatible SDP response received in ACK, need to abort the call");
 356                         linphone_core_abort_call(lc,call,"No codec intersection");
 357                         return;
 358                 }
 359         }
 360 }
 361
 362 static void call_accept_update(LinphoneCore *lc, LinphoneCall *call){
 363         SalMediaDescription *md;
 364         sal_call_accept(call->op);
 365         md=sal_call_get_final_media_description(call->op);
 366         if (md && !sal_media_description_empty(md))
 367                 linphone_core_update_streams(lc,call,md);
 368 }
 369
 370 static void call_resumed(LinphoneCore *lc, LinphoneCall *call){
 371         call_accept_update(lc,call);
 372         if(lc->vtable.display_status)
 373                 lc->vtable.display_status(lc,_("We have been resumed."));
 374         linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
 375         linphone_call_set_transfer_state(call, LinphoneCallIdle);
 376 }
 377
 378 static void call_paused_by_remote(LinphoneCore *lc, LinphoneCall *call){
 379         call_accept_update(lc,call);
 380         /* we are being paused */
 381         if(lc->vtable.display_status)
 382                 lc->vtable.display_status(lc,_("We are paused by other party."));
 383         linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
 384 }
 385
 386 static void call_updated_by_remote(LinphoneCore *lc, LinphoneCall *call){
 387         if(lc->vtable.display_status)
 388                 lc->vtable.display_status(lc,_("Call is updated by remote."));
 389         call->defer_update=FALSE;
 390         linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
 391         if (call->defer_update==FALSE){
 392                 linphone_core_accept_call_update(lc,call,NULL);
 393         }
 394 }
 395
 396 /* this callback is called when an incoming re-INVITE modifies the session*/
 397 static void call_updating(SalOp *op){
 398         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 399         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 400         SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
 401
 402         if (rmd==NULL){
 403                 /* case of a reINVITE without SDP */
 404                 call_accept_update(lc,call);
 405                 call->media_pending=TRUE;
 406                 return;
 407         }
 408
 409         switch(call->state){
 410                 case LinphoneCallPausedByRemote:
 411                         if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
 412                                 call_resumed(lc,call);
 413                         }else call_paused_by_remote(lc,call);
 414                 break;
 415                 case LinphoneCallStreamsRunning:
 416                 case LinphoneCallConnected:
 417                         if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
 418                                 call_paused_by_remote(lc,call);
 419                         }else{
 420                                 call_updated_by_remote(lc,call);
 421                         }
 422                 break;
 423                 default:
 424                         call_accept_update(lc,call);
 425         }
 426 }
 427
 428 static void call_terminated(SalOp *op, const char *from){
 429         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 430         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 431
 432         if (call==NULL) return;
 433
 434         switch(linphone_call_get_state(call)){
 435                 case LinphoneCallEnd:
 436                 case LinphoneCallError:
 437                         ms_warning("call_terminated: ignoring.");
 438                         return;
 439                 break;
 440                 case LinphoneCallIncomingReceived:
 441                 case LinphoneCallIncomingEarlyMedia:
 442                         call->reason=LinphoneReasonNotAnswered;
 443                 break;
 444                 default:
 445                 break;
 446         }
 447         ms_message("Current call terminated...");
 448         //we stop the call only if we have this current call or if we are in call
 449         if (lc->ringstream!=NULL && ( (ms_list_size(lc->calls)  == 1) || linphone_core_in_call(lc) )) {
 450                 ring_stop(lc->ringstream);
 451                 lc->ringstream=NULL;
 452         }
 453         linphone_call_stop_media_streams(call);
 454         if (lc->vtable.show!=NULL)
 455                 lc->vtable.show(lc);
 456         if (lc->vtable.display_status!=NULL)
 457                 lc->vtable.display_status(lc,_("Call terminated."));
 458
 459         linphone_call_set_state(call, LinphoneCallEnd,"Call ended");
 460 }
 461
 462 static void call_failure(SalOp *op, SalError error, SalReason sr, const char *details, int code){
 463         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 464         char *msg486=_("User is busy.");
 465         char *msg480=_("User is temporarily unavailable.");
 466         /*char *retrymsg=_("%s. Retry after %i minute(s).");*/
 467         char *msg600=_("User does not want to be disturbed.");
 468         char *msg603=_("Call declined.");
 469         const char *msg=details;
 470         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 471
 472         if (call==NULL){
 473                 ms_warning("Call faillure reported on already cleaned call ?");
 474                 return ;
 475         }
 476
 477         if (lc->vtable.show) lc->vtable.show(lc);
 478
 479         if (error==SalErrorNoResponse){
 480                 msg=_("No response.");
 481                 if (lc->vtable.display_status)
 482                         lc->vtable.display_status(lc,msg);
 483         }else if (error==SalErrorProtocol){
 484                 msg=details ? details : _("Protocol error.");
 485                 if (lc->vtable.display_status)
 486                         lc->vtable.display_status(lc, msg);
 487         }else if (error==SalErrorFailure){
 488                 switch(sr){
 489                         case SalReasonDeclined:
 490                                 msg=msg603;
 491                                 if (lc->vtable.display_status)
 492                                         lc->vtable.display_status(lc,msg603);
 493                         break;
 494                         case SalReasonBusy:
 495                                 msg=msg486;
 496                                 if (lc->vtable.display_status)
 497                                         lc->vtable.display_status(lc,msg486);
 498                         break;
 499                         case SalReasonRedirect:
 500                                 msg=_("Redirected");
 501                                 if (lc->vtable.display_status)
 502                                         lc->vtable.display_status(lc,msg);
 503                         break;
 504                         case SalReasonTemporarilyUnavailable:
 505                                 msg=msg480;
 506                                 if (lc->vtable.display_status)
 507                                         lc->vtable.display_status(lc,msg480);
 508                         break;
 509                         case SalReasonNotFound:
 510                                 if (lc->vtable.display_status)
 511                                         lc->vtable.display_status(lc,msg);
 512                         break;
 513                         case SalReasonDoNotDisturb:
 514                                 msg=msg600;
 515                                 if (lc->vtable.display_status)
 516                                         lc->vtable.display_status(lc,msg600);
 517                         break;
 518                         case SalReasonMedia:
 519                         //media_encryption_mandatory
 520                                 if (call->params.media_encryption == LinphoneMediaEncryptionSRTP &&
 521                                         !linphone_core_is_media_encryption_mandatory(lc)) {
 522                                         int i;
 523                                         ms_message("Outgoing call failed with SRTP (SAVP) enabled - retrying with AVP");
 524                                         linphone_call_stop_media_streams(call);
 525                                         if (call->state==LinphoneCallOutgoingInit || call->state==LinphoneCallOutgoingProgress){
 526                                                 /* clear SRTP local params */
 527                                                 call->params.media_encryption = LinphoneMediaEncryptionNone;
 528                                                 for(i=0; i<call->localdesc->nstreams; i++) {
 529                                                         call->localdesc->streams[i].proto = SalProtoRtpAvp;
 530                                                         memset(call->localdesc->streams[i].crypto, 0, sizeof(call->localdesc->streams[i].crypto));
 531                                                 }
 532                                                 linphone_core_start_invite(lc, call, NULL);
 533                                         }
 534                                         return;
 535                                 }
 536                                 msg=_("Incompatible media parameters.");
 537                                 if (lc->vtable.display_status)
 538                                         lc->vtable.display_status(lc,msg);
 539                         break;
 540                         default:
 541                                 if (lc->vtable.display_status)
 542                                         lc->vtable.display_status(lc,_("Call failed."));
 543                 }
 544         }
 545
 546         if (lc->ringstream!=NULL) {
 547                 ring_stop(lc->ringstream);
 548                 lc->ringstream=NULL;
 549         }
 550         linphone_call_stop_media_streams (call);
 551         if (call->referer && linphone_call_get_state(call->referer)==LinphoneCallPaused && call->referer->was_automatically_paused){
 552                 /*resume to the call that send us the refer automatically*/
 553                 linphone_core_resume_call(lc,call->referer);
 554         }
 555         if (sr == SalReasonDeclined) {
 556                 call->reason=LinphoneReasonDeclined;
 557                 linphone_call_set_state(call,LinphoneCallEnd,"Call declined.");
 558         } else if (sr == SalReasonNotFound) {
 559                 call->reason=LinphoneReasonNotFound;
 560                 linphone_call_set_state(call,LinphoneCallError,"User not found.");
 561         } else {
 562                 linphone_call_set_state(call,LinphoneCallError,msg);
 563         }
 564 }
 565
 566 static void call_released(SalOp *op){
 567         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 568         if (call!=NULL){
 569                 linphone_call_set_state(call,LinphoneCallReleased,"Call released");
 570         }else ms_error("call_released() for already destroyed call ?");
 571 }
 572
 573 static void auth_requested(SalOp *h, const char *realm, const char *username){
 574         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 575         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 576         LinphoneCall *call=is_a_linphone_call(sal_op_get_user_pointer(h));
 577
 578         if (call && call->ping_op==h){
 579                 /*don't request authentication for ping requests. Their purpose is just to get any
 580                  * answer to get the Via's received and rport parameters.
 581                  */
 582                 ms_message("auth_requested(): ignored for ping request.");
 583                 return;
 584         }
 585
 586         ms_message("auth_requested() for realm=%s, username=%s",realm,username);
 587
 588         if (ai && ai->works==FALSE && ai->usecount>=3){
 589                 /*case we tried 3 times to authenticate, without success */
 590                 /*Better is to stop (implemeted below in else statement), and retry later*/
 591                 if (ms_time(NULL)-ai->last_use_time>30){
 592                         ai->usecount=0; /*so that we can allow to retry */
 593                 }
 594         }
 595
 596         if (ai && (ai->works || ai->usecount<3)){
 597                 SalAuthInfo sai;
 598                 sai.username=ai->username;
 599                 sai.userid=ai->userid;
 600                 sai.realm=ai->realm;
 601                 sai.password=ai->passwd;
 602                 ms_message("auth_requested(): authenticating realm=%s, username=%s",realm,username);
 603                 sal_op_authenticate(h,&sai);
 604                 ai->usecount++;
 605                 ai->last_use_time=ms_time(NULL);
 606         }else{
 607                 if (ai && ai->works==FALSE) {
 608                         sal_op_cancel_authentication(h);
 609                 }
 610                 if (lc->vtable.auth_info_requested)
 611                         lc->vtable.auth_info_requested(lc,realm,username);
 612         }
 613 }
 614
 615 static void auth_success(SalOp *h, const char *realm, const char *username){
 616         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 617         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 618         if (ai){
 619                 ms_message("%s/%s authentication works.",realm,username);
 620                 ai->works=TRUE;
 621         }
 622 }
 623
 624 static void register_success(SalOp *op, bool_t registered){
 625         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 626         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 627         char *msg;
 628
 629         if (cfg->deletion_date!=0){
 630                 ms_message("Registration success for removed proxy config, ignored");
 631                 return;
 632         }
 633         linphone_proxy_config_set_error(cfg,LinphoneReasonNone);
 634         linphone_proxy_config_set_state(cfg, registered ? LinphoneRegistrationOk : LinphoneRegistrationCleared ,
 635                                         registered ? "Registration sucessful" : "Unregistration done");
 636         if (lc->vtable.display_status){
 637                 if (registered) msg=ms_strdup_printf(_("Registration on %s successful."),sal_op_get_proxy(op));
 638                 else msg=ms_strdup_printf(_("Unregistration on %s done."),sal_op_get_proxy(op));
 639                 lc->vtable.display_status(lc,msg);
 640                 ms_free(msg);
 641         }
 642
 643 }
 644
 645 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details){
 646         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 647         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 648
 649         if (cfg==NULL){
 650                 ms_warning("Registration failed for unknown proxy config.");
 651                 return ;
 652         }
 653         if (cfg->deletion_date!=0){
 654                 ms_message("Registration failed for removed proxy config, ignored");
 655                 return;
 656         }
 657         if (details==NULL)
 658                 details=_("no response timeout");
 659
 660         if (lc->vtable.display_status) {
 661                 char *msg=ortp_strdup_printf(_("Registration on %s failed: %s"),sal_op_get_proxy(op),details  );
 662                 lc->vtable.display_status(lc,msg);
 663                 ms_free(msg);
 664         }
 665         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 666                 linphone_proxy_config_set_error(cfg, LinphoneReasonBadCredentials);
 667         } else if (error == SalErrorNoResponse) {
 668                 linphone_proxy_config_set_error(cfg, LinphoneReasonNoResponse);
 669         }
 670         linphone_proxy_config_set_state(cfg,LinphoneRegistrationFailed,details);
 671         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 672                 const char *realm=NULL,*username=NULL;
 673                 if (sal_op_get_auth_requested(op,&realm,&username)==0){
 674                         if (lc->vtable.auth_info_requested)
 675                                 lc->vtable.auth_info_requested(lc,realm,username);
 676                 }
 677         }
 678 }
 679
 680 static void vfu_request(SalOp *op){
 681 #ifdef VIDEO_ENABLED
 682         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 683         if (call==NULL){
 684                 ms_warning("VFU request but no call !");
 685                 return ;
 686         }
 687         if (call->videostream)
 688                 video_stream_send_vfu(call->videostream);
 689 #endif
 690 }
 691
 692 static void dtmf_received(SalOp *op, char dtmf){
 693         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 694         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 695         if (lc->vtable.dtmf_received != NULL)
 696                 lc->vtable.dtmf_received(lc, call, dtmf);
 697 }
 698
 699 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 700         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 701         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 702         if (call){
 703                 if (call->refer_to!=NULL){
 704                         ms_free(call->refer_to);
 705                 }
 706                 call->refer_to=ms_strdup(referto);
 707                 call->refer_pending=TRUE;
 708                 linphone_call_set_state(call,LinphoneCallRefered,"Refered");
 709                 if (lc->vtable.display_status){
 710                         char *msg=ms_strdup_printf(_("We are transferred to %s"),referto);
 711                         lc->vtable.display_status(lc,msg);
 712                         ms_free(msg);
 713                 }
 714                 if (call->state!=LinphoneCallPaused){
 715                         ms_message("Automatically pausing current call to accept transfer.");
 716                         linphone_core_pause_call(lc,call);
 717                         call->was_automatically_paused=TRUE;
 718                         /*then we will start the refered when the pause is accepted, in order to serialize transactions within the dialog.
 719                          * Indeed we need to avoid to send a NOTIFY to inform about of state of the refered call while the pause isn't completed.
 720                         **/
 721                 }else linphone_core_start_refered_call(lc,call);
 722         }else if (lc->vtable.refer_received){
 723                 lc->vtable.refer_received(lc,referto);
 724         }
 725 }
 726
 727 static void text_received(Sal *sal, const char *from, const char *msg){
 728         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 729         linphone_core_text_received(lc,from,msg);
 730 }
 731
 732 static void notify(SalOp *op, const char *from, const char *msg){
 733         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 734         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 735         ms_message("get a %s notify from %s",msg,from);
 736         if(lc->vtable.notify_recv)
 737                 lc->vtable.notify_recv(lc,call,from,msg);
 738 }
 739
 740 static void notify_presence(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg){
 741         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 742         linphone_notify_recv(lc,op,ss,status);
 743 }
 744
 745 static void subscribe_received(SalOp *op, const char *from){
 746         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 747         linphone_subscription_new(lc,op,from);
 748 }
 749
 750 static void subscribe_closed(SalOp *op, const char *from){
 751         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 752         linphone_subscription_closed(lc,op);
 753 }
 754
 755 static void ping_reply(SalOp *op){
 756         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 757         ms_message("ping reply !");
 758         if (call){
 759                 if (call->state==LinphoneCallOutgoingInit){
 760                         linphone_core_start_invite(call->core,call,NULL);
 761                 }
 762         }
 763         else
 764         {
 765                 ms_warning("ping reply without call attached...");
 766         }
 767 }
 768
 769 static void notify_refer(SalOp *op, SalReferStatus status){
 770         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 771         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 772         LinphoneCallState cstate;
 773         if (call==NULL) {
 774                 ms_warning("Receiving notify_refer for unknown call.");
 775                 return ;
 776         }
 777         switch(status){
 778                 case SalReferTrying:
 779                         cstate=LinphoneCallOutgoingProgress;
 780                 break;
 781                 case SalReferSuccess:
 782                         cstate=LinphoneCallConnected;
 783                 break;
 784                 case SalReferFailed:
 785                         cstate=LinphoneCallError;
 786                 break;
 787                 default:
 788                         cstate=LinphoneCallError;
 789         }
 790         linphone_call_set_transfer_state(call, cstate);
 791         if (cstate==LinphoneCallConnected){
 792                 /*automatically terminate the call as the transfer is complete.*/
 793                 linphone_core_terminate_call(lc,call);
 794         }
 795 }
 796
 797 SalCallbacks linphone_sal_callbacks={
 798         call_received,
 799         call_ringing,
 800         call_accepted,
 801         call_ack,
 802         call_updating,
 803         call_terminated,
 804         call_failure,
 805         call_released,
 806         auth_requested,
 807         auth_success,
 808         register_success,
 809         register_failure,
 810         vfu_request,
 811         dtmf_received,
 812         refer_received,
 813         text_received,
 814         notify,
 815         notify_presence,
 816         notify_refer,
 817         subscribe_received,
 818         subscribe_closed,
 819         ping_reply
 820 };
 821
 822