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

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