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         char *barmesg;
 144         LinphoneCall *call;
 145         const char *from,*to;
 146         char *tmp;
 147         LinphoneAddress *from_parsed;
 148         LinphoneAddress *from_addr, *to_addr;
 149         SalMediaDescription *md;
 150         bool_t propose_early_media=lp_config_get_int(lc->config,"sip","incoming_calls_early_media",FALSE);
 151         bool_t prevent_colliding_calls=lp_config_get_int(lc->config,"sip","prevent_colliding_calls",TRUE);
 152         const char *ringback_tone=linphone_core_get_remote_ringback_tone (lc);
 153
 154         /* first check if we can answer successfully to this invite */
 155         if (lc->presence_mode==LinphoneStatusBusy ||
 156             lc->presence_mode==LinphoneStatusOffline ||
 157             lc->presence_mode==LinphoneStatusDoNotDisturb ||
 158             lc->presence_mode==LinphoneStatusMoved){
 159                 if (lc->presence_mode==LinphoneStatusBusy )
 160                         sal_call_decline(h,SalReasonBusy,NULL);
 161                 else if (lc->presence_mode==LinphoneStatusOffline)
 162                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 163                 else if (lc->presence_mode==LinphoneStatusDoNotDisturb)
 164                         sal_call_decline(h,SalReasonTemporarilyUnavailable,NULL);
 165                 else if (lc->alt_contact!=NULL && lc->presence_mode==LinphoneStatusMoved)
 166                         sal_call_decline(h,SalReasonRedirect,lc->alt_contact);
 167                 sal_op_release(h);
 168                 return;
 169         }
 170         if (!linphone_core_can_we_add_call(lc)){/*busy*/
 171                 sal_call_decline(h,SalReasonBusy,NULL);
 172                 sal_op_release(h);
 173                 return;
 174         }
 175         from=sal_op_get_from(h);
 176         to=sal_op_get_to(h);
 177         from_addr=linphone_address_new(from);
 178         to_addr=linphone_address_new(to);
 179
 180         if ((already_a_call_with_remote_address(lc,from_addr) && prevent_colliding_calls) || already_a_call_pending(lc)){
 181                 ms_warning("Receiving another call while one is ringing or initiated, refusing this one with busy message.");
 182                 sal_call_decline(h,SalReasonBusy,NULL);
 183                 sal_op_release(h);
 184                 linphone_address_destroy(from_addr);
 185                 linphone_address_destroy(to_addr);
 186                 return;
 187         }
 188
 189         call=linphone_call_new_incoming(lc,from_addr,to_addr,h);
 190         sal_call_set_local_media_description(h,call->localdesc);
 191         md=sal_call_get_final_media_description(h);
 192
 193         if (md && sal_media_description_empty(md)){
 194                 sal_call_decline(h,SalReasonMedia,NULL);
 195                 linphone_call_unref(call);
 196                 return;
 197         }
 198
 199         /* the call is acceptable so we can now add it to our list */
 200         linphone_core_add_call(lc,call);
 201
 202         from_parsed=linphone_address_new(sal_op_get_from(h));
 203         linphone_address_clean(from_parsed);
 204         tmp=linphone_address_as_string(from_parsed);
 205         linphone_address_destroy(from_parsed);
 206         barmesg=ortp_strdup_printf("%s %s%s",tmp,_("is contacting you"),
 207             (sal_call_autoanswer_asked(h)) ?_(" and asked autoanswer."):_("."));
 208         if (lc->vtable.show) lc->vtable.show(lc);
 209         if (lc->vtable.display_status)
 210             lc->vtable.display_status(lc,barmesg);
 211
 212         /* play the ring if this is the only call*/
 213         if (ms_list_size(lc->calls)==1){
 214                 lc->current_call=call;
 215                 if (lc->ringstream && lc->dmfs_playing_start_time!=0){
 216                         ring_stop(lc->ringstream);
 217                         lc->ringstream=NULL;
 218                         lc->dmfs_playing_start_time=0;
 219                 }
 220                 if (lc->sound_conf.ring_sndcard!=NULL){
 221                         if(lc->ringstream==NULL && lc->sound_conf.local_ring){
 222                                 MSSndCard *ringcard=lc->sound_conf.lsd_card ?lc->sound_conf.lsd_card : lc->sound_conf.ring_sndcard;
 223                                 ms_message("Starting local ring...");
 224                                 lc->ringstream=ring_start(lc->sound_conf.local_ring,2000,ringcard);
 225                         }
 226                         else
 227                         {
 228                                 ms_message("the local ring is already started");
 229                         }
 230                 }
 231         }else{
 232                 /* else play a tone within the context of the current call */
 233                 call->ringing_beep=TRUE;
 234                 linphone_core_play_tone(lc);
 235         }
 236
 237
 238         linphone_call_ref(call); /*prevent the call from being destroyed while we are notifying, if the user declines within the state callback */
 239         linphone_call_set_state(call,LinphoneCallIncomingReceived,"Incoming call");
 240
 241         if (call->state==LinphoneCallIncomingReceived){
 242                 sal_call_notify_ringing(h,propose_early_media || ringback_tone!=NULL);
 243
 244                 if (propose_early_media || ringback_tone!=NULL){
 245                         linphone_call_set_state(call,LinphoneCallIncomingEarlyMedia,"Incoming call early media");
 246                         md=sal_call_get_final_media_description(h);
 247                         linphone_core_update_streams(lc,call,md);
 248                 }
 249                 if (sal_call_get_replaces(call->op)!=NULL && lp_config_get_int(lc->config,"sip","auto_answer_replacing_calls",1)){
 250                         linphone_core_accept_call(lc,call);
 251                 }
 252         }
 253         linphone_call_unref(call);
 254
 255         ms_free(barmesg);
 256         ms_free(tmp);
 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                         lc->ringstream=ring_start(lc->sound_conf.remote_ring,2000,ringcard);
 281                 }
 282                 ms_message("Remote ringing...");
 283                 if (lc->vtable.display_status)
 284                         lc->vtable.display_status(lc,_("Remote ringing..."));
 285                 linphone_call_set_state(call,LinphoneCallOutgoingRinging,"Remote ringing");
 286         }else{
 287                 /*accept early media */
 288                 if (call->audiostream && call->audiostream->ticker!=NULL){
 289                         /*streams already started */
 290                         ms_message("Early media already started.");
 291                         return;
 292                 }
 293                 if (lc->vtable.show) lc->vtable.show(lc);
 294                 if (lc->vtable.display_status)
 295                         lc->vtable.display_status(lc,_("Early media."));
 296                 linphone_call_set_state(call,LinphoneCallOutgoingEarlyMedia,"Early media");
 297                 if (lc->ringstream!=NULL){
 298                         ring_stop(lc->ringstream);
 299                         lc->ringstream=NULL;
 300                 }
 301                 ms_message("Doing early media...");
 302                 linphone_core_update_streams (lc,call,md);
 303         }
 304 }
 305
 306 /*
 307  * could be reach :
 308  *  - when the call is accepted
 309  *  - when a request is accepted (pause, resume)
 310  */
 311 static void call_accepted(SalOp *op){
 312         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 313         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 314         SalMediaDescription *md;
 315
 316         if (call==NULL){
 317                 ms_warning("No call to accept.");
 318                 return ;
 319         }
 320
 321         md=sal_call_get_final_media_description(op);
 322
 323         if (call->state==LinphoneCallOutgoingProgress ||
 324             call->state==LinphoneCallOutgoingRinging ||
 325             call->state==LinphoneCallOutgoingEarlyMedia){
 326                 linphone_call_set_state(call,LinphoneCallConnected,"Connected");
 327                 if (call->referer) linphone_core_notify_refer_state(lc,call->referer,call);
 328         }
 329         if (md && !sal_media_description_empty(md)){
 330                 if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
 331                     sal_media_description_has_dir(md,SalStreamInactive)){
 332                         if (lc->vtable.display_status){
 333                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 334                                 char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
 335                                 lc->vtable.display_status(lc,msg);
 336                                 ms_free(tmp);
 337                                 ms_free(msg);
 338                         }
 339                         linphone_core_update_streams (lc,call,md);
 340                         linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 341                 }else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 342                         /*we are put on hold when the call is initially accepted */
 343                         if (lc->vtable.display_status){
 344                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 345                                 char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
 346                                 lc->vtable.display_status(lc,msg);
 347                                 ms_free(tmp);
 348                                 ms_free(msg);
 349                         }
 350                         linphone_core_update_streams (lc,call,md);
 351                         linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
 352                 }else{
 353                         if (call->state==LinphoneCallStreamsRunning){
 354                                 /*media was running before, the remote as acceted a call modification (that is
 355                                         a reinvite made by us. We must notify the application this reinvite was accepted*/
 356                                 linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
 357                         }else{
 358                                 if (call->state==LinphoneCallResuming){
 359                                         if (lc->vtable.display_status){
 360                                                 lc->vtable.display_status(lc,_("Call resumed."));
 361                                         }
 362                                 }else{
 363                                         if (lc->vtable.display_status){
 364                                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 365                                                 char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
 366                                                 lc->vtable.display_status(lc,msg);
 367                                                 ms_free(tmp);
 368                                                 ms_free(msg);
 369                                         }
 370                                 }
 371                         }
 372                         linphone_core_update_streams (lc,call,md);
 373                         if (!call->current_params.in_conference)
 374                                 lc->current_call=call;
 375                         linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 376                 }
 377         }else{
 378                 /*send a bye*/
 379                 ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
 380                 linphone_core_abort_call(lc,call,_("Incompatible, check codecs..."));
 381         }
 382 }
 383
 384 static void call_ack(SalOp *op){
 385         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 386         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 387         if (call==NULL){
 388                 ms_warning("No call to be ACK'd");
 389                 return ;
 390         }
 391         if (call->media_pending){
 392                 SalMediaDescription *md=sal_call_get_final_media_description(op);
 393                 if (md && !sal_media_description_empty(md)){
 394                         if (call->state==LinphoneCallStreamsRunning){
 395                                 /*media was running before, the remote as acceted a call modification (that is
 396                                         a reinvite made by us. We must notify the application this reinvite was accepted*/
 397                                 linphone_call_set_state(call, LinphoneCallUpdated, "Call updated");
 398                         }
 399                         linphone_core_update_streams (lc,call,md);
 400                         linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
 401                 }else{
 402                         /*send a bye*/
 403                         ms_error("Incompatible SDP response received in ACK, need to abort the call");
 404                         linphone_core_abort_call(lc,call,"No codec intersection");
 405                         return;
 406                 }
 407         }
 408 }
 409
 410 static void call_accept_update(LinphoneCore *lc, LinphoneCall *call){
 411         SalMediaDescription *md;
 412         sal_call_accept(call->op);
 413         md=sal_call_get_final_media_description(call->op);
 414         if (md && !sal_media_description_empty(md))
 415                 linphone_core_update_streams(lc,call,md);
 416 }
 417
 418 static void call_resumed(LinphoneCore *lc, LinphoneCall *call){
 419         call_accept_update(lc,call);
 420         if(lc->vtable.display_status)
 421                 lc->vtable.display_status(lc,_("We have been resumed."));
 422         linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
 423 }
 424
 425 static void call_paused_by_remote(LinphoneCore *lc, LinphoneCall *call){
 426         call_accept_update(lc,call);
 427         /* we are being paused */
 428         if(lc->vtable.display_status)
 429                 lc->vtable.display_status(lc,_("We are paused by other party."));
 430         linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
 431 }
 432
 433 static void call_updated_by_remote(LinphoneCore *lc, LinphoneCall *call){
 434         if(lc->vtable.display_status)
 435                 lc->vtable.display_status(lc,_("Call is updated by remote."));
 436         call->defer_update=FALSE;
 437         linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
 438         if (call->defer_update==FALSE){
 439                 linphone_core_accept_call_update(lc,call,NULL);
 440         }
 441 }
 442
 443 /* this callback is called when an incoming re-INVITE modifies the session*/
 444 static void call_updating(SalOp *op){
 445         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 446         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 447         SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
 448
 449         if (rmd==NULL){
 450                 /* case of a reINVITE without SDP */
 451                 call_accept_update(lc,call);
 452                 call->media_pending=TRUE;
 453                 return;
 454         }
 455
 456         switch(call->state){
 457                 case LinphoneCallPausedByRemote:
 458                         if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
 459                                 call_resumed(lc,call);
 460                         }
 461                 break;
 462                 case LinphoneCallStreamsRunning:
 463                 case LinphoneCallConnected:
 464                         if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
 465                                 call_paused_by_remote(lc,call);
 466                         }else{
 467                                 call_updated_by_remote(lc,call);
 468                         }
 469                 break;
 470                 default:
 471                         call_accept_update(lc,call);
 472         }
 473 }
 474
 475 static void call_terminated(SalOp *op, const char *from){
 476         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 477         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 478
 479         if (call==NULL) return;
 480
 481         if (linphone_call_get_state(call)==LinphoneCallEnd || linphone_call_get_state(call)==LinphoneCallError){
 482                 ms_warning("call_terminated: ignoring.");
 483                 return;
 484         }
 485         ms_message("Current call terminated...");
 486         //we stop the call only if we have this current call or if we are in call
 487         if (lc->ringstream!=NULL && ( (ms_list_size(lc->calls)  == 1) || linphone_core_in_call(lc) )) {
 488                 ring_stop(lc->ringstream);
 489                 lc->ringstream=NULL;
 490         }
 491         linphone_call_stop_media_streams(call);
 492         if (lc->vtable.show!=NULL)
 493                 lc->vtable.show(lc);
 494         if (lc->vtable.display_status!=NULL)
 495                 lc->vtable.display_status(lc,_("Call terminated."));
 496
 497         linphone_call_set_state(call, LinphoneCallEnd,"Call ended");
 498 }
 499
 500 static void call_failure(SalOp *op, SalError error, SalReason sr, const char *details, int code){
 501         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 502         char *msg486=_("User is busy.");
 503         char *msg480=_("User is temporarily unavailable.");
 504         /*char *retrymsg=_("%s. Retry after %i minute(s).");*/
 505         char *msg600=_("User does not want to be disturbed.");
 506         char *msg603=_("Call declined.");
 507         const char *msg=details;
 508         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 509
 510         if (call==NULL){
 511                 ms_warning("Call faillure reported on already cleaned call ?");
 512                 return ;
 513         }
 514
 515         if (lc->vtable.show) lc->vtable.show(lc);
 516
 517         if (error==SalErrorNoResponse){
 518                 msg=_("No response.");
 519                 if (lc->vtable.display_status)
 520                         lc->vtable.display_status(lc,msg);
 521         }else if (error==SalErrorProtocol){
 522                 msg=details ? details : _("Protocol error.");
 523                 if (lc->vtable.display_status)
 524                         lc->vtable.display_status(lc, msg);
 525         }else if (error==SalErrorFailure){
 526                 switch(sr){
 527                         case SalReasonDeclined:
 528                                 msg=msg603;
 529                                 if (lc->vtable.display_status)
 530                                         lc->vtable.display_status(lc,msg603);
 531                         break;
 532                         case SalReasonBusy:
 533                                 msg=msg486;
 534                                 if (lc->vtable.display_status)
 535                                         lc->vtable.display_status(lc,msg486);
 536                         break;
 537                         case SalReasonRedirect:
 538                                 msg=_("Redirected");
 539                                 if (lc->vtable.display_status)
 540                                         lc->vtable.display_status(lc,msg);
 541                         break;
 542                         case SalReasonTemporarilyUnavailable:
 543                                 msg=msg480;
 544                                 if (lc->vtable.display_status)
 545                                         lc->vtable.display_status(lc,msg480);
 546                         break;
 547                         case SalReasonNotFound:
 548                                 if (lc->vtable.display_status)
 549                                         lc->vtable.display_status(lc,msg);
 550                         break;
 551                         case SalReasonDoNotDisturb:
 552                                 msg=msg600;
 553                                 if (lc->vtable.display_status)
 554                                         lc->vtable.display_status(lc,msg600);
 555                         break;
 556                         case SalReasonMedia:
 557                         //media_encryption_mandatory
 558                                 if (call->params.media_encryption == LinphoneMediaEncryptionSRTP &&
 559                                         !linphone_core_is_media_encryption_mandatory(lc)) {
 560                                         int i;
 561                                         ms_message("Outgoing call failed with SRTP (SAVP) enabled - retrying with AVP");
 562                                         linphone_call_stop_media_streams(call);
 563                                         /* clear SRTP local params */
 564                                         call->params.media_encryption = LinphoneMediaEncryptionNone;
 565                                         for(i=0; i<call->localdesc->nstreams; i++) {
 566                                                 call->localdesc->streams[i].proto = SalProtoRtpAvp;
 567                                                 memset(call->localdesc->streams[i].crypto, 0, sizeof(call->localdesc->streams[i].crypto));
 568                                         }
 569                                         linphone_core_start_invite(lc, call, NULL);
 570                                         return;
 571                                 }
 572                                 msg=_("No common codecs");
 573                                 if (lc->vtable.display_status)
 574                                         lc->vtable.display_status(lc,msg);
 575                         break;
 576                         default:
 577                                 if (lc->vtable.display_status)
 578                                         lc->vtable.display_status(lc,_("Call failed."));
 579                 }
 580         }
 581
 582         if (lc->ringstream!=NULL) {
 583                 ring_stop(lc->ringstream);
 584                 lc->ringstream=NULL;
 585         }
 586         linphone_call_stop_media_streams (call);
 587         if (sr == SalReasonDeclined) {
 588                 call->reason=LinphoneReasonDeclined;
 589                 linphone_call_set_state(call,LinphoneCallEnd,"Call declined.");
 590         } else if (sr == SalReasonNotFound) {
 591                 call->reason=LinphoneReasonNotFound;
 592                 linphone_call_set_state(call,LinphoneCallError,"User not found.");
 593         } else {
 594                 linphone_call_set_state(call,LinphoneCallError,msg);
 595         }
 596         if (call->referer && linphone_call_get_state(call->referer)==LinphoneCallPaused && call->referer->was_automatically_paused){
 597                 /*resume to the call that send us the refer automatically*/
 598                 linphone_core_resume_call(lc,call->referer);
 599         }
 600 }
 601
 602 static void call_released(SalOp *op){
 603         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 604         if (call!=NULL){
 605                 linphone_call_set_state(call,LinphoneCallReleased,"Call released");
 606         }else ms_error("call_released() for already destroyed call ?");
 607 }
 608
 609 static void auth_requested(SalOp *h, const char *realm, const char *username){
 610         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 611         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 612         LinphoneCall *call=is_a_linphone_call(sal_op_get_user_pointer(h));
 613
 614         if (call && call->ping_op==h){
 615                 /*don't request authentication for ping requests. Their purpose is just to get any
 616                  * answer to get the Via's received and rport parameters.
 617                  */
 618                 ms_message("auth_requested(): ignored for ping request.");
 619                 return;
 620         }
 621
 622         ms_message("auth_requested() for realm=%s, username=%s",realm,username);
 623
 624         if (ai && ai->works==FALSE && ai->usecount>=3){
 625                 /*case we tried 3 times to authenticate, without success */
 626                 /*Better is to stop (implemeted below in else statement), and retry later*/
 627                 if (ms_time(NULL)-ai->last_use_time>30){
 628                         ai->usecount=0; /*so that we can allow to retry */
 629                 }
 630         }
 631
 632         if (ai && (ai->works || ai->usecount<3)){
 633                 SalAuthInfo sai;
 634                 sai.username=ai->username;
 635                 sai.userid=ai->userid;
 636                 sai.realm=ai->realm;
 637                 sai.password=ai->passwd;
 638                 ms_message("auth_requested(): authenticating realm=%s, username=%s",realm,username);
 639                 sal_op_authenticate(h,&sai);
 640                 ai->usecount++;
 641                 ai->last_use_time=ms_time(NULL);
 642         }else{
 643                 if (ai && ai->works==FALSE) {
 644                         sal_op_cancel_authentication(h);
 645                 }
 646                 if (lc->vtable.auth_info_requested)
 647                         lc->vtable.auth_info_requested(lc,realm,username);
 648         }
 649 }
 650
 651 static void auth_success(SalOp *h, const char *realm, const char *username){
 652         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 653         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 654         if (ai){
 655                 ms_message("%s/%s authentication works.",realm,username);
 656                 ai->works=TRUE;
 657         }
 658 }
 659
 660 static void register_success(SalOp *op, bool_t registered){
 661         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 662         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 663         char *msg;
 664
 665         if (cfg->deletion_date!=0){
 666                 ms_message("Registration success for removed proxy config, ignored");
 667                 return;
 668         }
 669         linphone_proxy_config_set_error(cfg,LinphoneReasonNone);
 670         linphone_proxy_config_set_state(cfg, registered ? LinphoneRegistrationOk : LinphoneRegistrationCleared ,
 671                                         registered ? "Registration sucessful" : "Unregistration done");
 672         if (lc->vtable.display_status){
 673                 if (registered) msg=ms_strdup_printf(_("Registration on %s successful."),sal_op_get_proxy(op));
 674                 else msg=ms_strdup_printf(_("Unregistration on %s done."),sal_op_get_proxy(op));
 675                 lc->vtable.display_status(lc,msg);
 676                 ms_free(msg);
 677         }
 678
 679 }
 680
 681 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details){
 682         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 683         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 684
 685         if (cfg==NULL){
 686                 ms_warning("Registration failed for unknown proxy config.");
 687                 return ;
 688         }
 689         if (cfg->deletion_date!=0){
 690                 ms_message("Registration failed for removed proxy config, ignored");
 691                 return;
 692         }
 693         if (details==NULL)
 694                 details=_("no response timeout");
 695
 696         if (lc->vtable.display_status) {
 697                 char *msg=ortp_strdup_printf(_("Registration on %s failed: %s"),sal_op_get_proxy(op),details  );
 698                 lc->vtable.display_status(lc,msg);
 699                 ms_free(msg);
 700         }
 701         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 702                 linphone_proxy_config_set_error(cfg, LinphoneReasonBadCredentials);
 703         } else if (error == SalErrorNoResponse) {
 704                 linphone_proxy_config_set_error(cfg, LinphoneReasonNoResponse);
 705         }
 706         linphone_proxy_config_set_state(cfg,LinphoneRegistrationFailed,details);
 707         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 708                 const char *realm=NULL,*username=NULL;
 709                 if (sal_op_get_auth_requested(op,&realm,&username)==0){
 710                         if (lc->vtable.auth_info_requested)
 711                                 lc->vtable.auth_info_requested(lc,realm,username);
 712                 }
 713         }
 714 }
 715
 716 static void vfu_request(SalOp *op){
 717 #ifdef VIDEO_ENABLED
 718         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 719         if (call==NULL){
 720                 ms_warning("VFU request but no call !");
 721                 return ;
 722         }
 723         if (call->videostream)
 724                 video_stream_send_vfu(call->videostream);
 725 #endif
 726 }
 727
 728 static void dtmf_received(SalOp *op, char dtmf){
 729         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 730         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 731         if (lc->vtable.dtmf_received != NULL)
 732                 lc->vtable.dtmf_received(lc, call, dtmf);
 733 }
 734
 735 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 736         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 737         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 738         if (call){
 739                 if (call->refer_to!=NULL){
 740                         ms_free(call->refer_to);
 741                 }
 742                 call->refer_to=ms_strdup(referto);
 743                 call->refer_pending=TRUE;
 744                 linphone_call_set_state(call,LinphoneCallRefered,"Refered");
 745                 if (lc->vtable.display_status){
 746                         char *msg=ms_strdup_printf(_("We are transferred to %s"),referto);
 747                         lc->vtable.display_status(lc,msg);
 748                         ms_free(msg);
 749                 }
 750                 if (call->state!=LinphoneCallPaused){
 751                         ms_message("Automatically pausing current call to accept transfer.");
 752                         linphone_core_pause_call(lc,call);
 753                         call->was_automatically_paused=TRUE;
 754                 }
 755                 linphone_core_start_refered_call(lc,call);
 756         }else if (lc->vtable.refer_received){
 757                 lc->vtable.refer_received(lc,referto);
 758         }
 759 }
 760
 761 static void text_received(Sal *sal, const char *from, const char *msg){
 762         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 763         linphone_core_text_received(lc,from,msg);
 764 }
 765
 766 static void notify(SalOp *op, const char *from, const char *msg){
 767         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 768         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 769         ms_message("get a %s notify from %s",msg,from);
 770         if(lc->vtable.notify_recv)
 771                 lc->vtable.notify_recv(lc,call,from,msg);
 772 }
 773
 774 static void notify_presence(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg){
 775         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 776         linphone_notify_recv(lc,op,ss,status);
 777 }
 778
 779 static void subscribe_received(SalOp *op, const char *from){
 780         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 781         linphone_subscription_new(lc,op,from);
 782 }
 783
 784 static void subscribe_closed(SalOp *op, const char *from){
 785         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 786         linphone_subscription_closed(lc,op);
 787 }
 788
 789 static void ping_reply(SalOp *op){
 790         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 791         ms_message("ping reply !");
 792         if (call){
 793                 if (call->state==LinphoneCallOutgoingInit){
 794                         linphone_core_start_invite(call->core,call,NULL);
 795                 }
 796         }
 797         else
 798         {
 799                 ms_warning("ping reply without call attached...");
 800         }
 801 }
 802
 803 static void notify_refer(SalOp *op, SalReferStatus status){
 804         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 805         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 806         LinphoneCallState cstate;
 807         if (call==NULL) {
 808                 ms_warning("Receiving notify_refer for unknown call.");
 809                 return ;
 810         }
 811         switch(status){
 812                 case SalReferTrying:
 813                         cstate=LinphoneCallOutgoingProgress;
 814                 break;
 815                 case SalReferSuccess:
 816                         cstate=LinphoneCallConnected;
 817                 break;
 818                 case SalReferFailed:
 819                         cstate=LinphoneCallError;
 820                 break;
 821                 default:
 822                         cstate=LinphoneCallError;
 823         }
 824         if (lc->vtable.transfer_state_changed)
 825                 lc->vtable.transfer_state_changed(lc,call,cstate);
 826         if (cstate==LinphoneCallConnected){
 827                 /*automatically terminate the call as the transfer is complete.*/
 828                 linphone_core_terminate_call(lc,call);
 829         }
 830 }
 831
 832 SalCallbacks linphone_sal_callbacks={
 833         call_received,
 834         call_ringing,
 835         call_accepted,
 836         call_ack,
 837         call_updating,
 838         call_terminated,
 839         call_failure,
 840         call_released,
 841         auth_requested,
 842         auth_success,
 843         register_success,
 844         register_failure,
 845         vfu_request,
 846         dtmf_received,
 847         refer_received,
 848         text_received,
 849         notify,
 850         notify_presence,
 851         notify_refer,
 852         subscribe_received,
 853         subscribe_closed,
 854         ping_reply
 855 };
 856
 857