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->n_active_streams; 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->n_active_streams; 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) && !linphone_core_incompatible_security(lc,md)){
 348                 linphone_call_update_remote_session_id_and_ver(call);
 349                 if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
 350                     sal_media_description_has_dir(md,SalStreamInactive)){
 351                         if (lc->vtable.display_status){
 352                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 353                                 char *msg=ms_strdup_printf(_("Call with %s is paused."),tmp);
 354                                 lc->vtable.display_status(lc,msg);
 355                                 ms_free(tmp);
 356                                 ms_free(msg);
 357                         }
 358                         linphone_core_update_streams (lc,call,md);
 359                         linphone_call_set_state(call,LinphoneCallPaused,"Call paused");
 360                         if (call->refer_pending)
 361                                 linphone_core_start_refered_call(lc,call);
 362                 }else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 363                         /*we are put on hold when the call is initially accepted */
 364                         if (lc->vtable.display_status){
 365                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 366                                 char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
 367                                 lc->vtable.display_status(lc,msg);
 368                                 ms_free(tmp);
 369                                 ms_free(msg);
 370                         }
 371                         linphone_core_update_streams (lc,call,md);
 372                         linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
 373                 }else{
 374                         if (call->state!=LinphoneCallUpdating){
 375                                 if (call->state==LinphoneCallResuming){
 376                                         if (lc->vtable.display_status){
 377                                                 lc->vtable.display_status(lc,_("Call resumed."));
 378                                         }
 379                                 }else{
 380                                         if (lc->vtable.display_status){
 381                                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 382                                                 char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
 383                                                 lc->vtable.display_status(lc,msg);
 384                                                 ms_free(tmp);
 385                                                 ms_free(msg);
 386                                         }
 387                                 }
 388                         }
 389                         linphone_core_update_streams (lc,call,md);
 390                         if (!call->current_params.in_conference)
 391                                 lc->current_call=call;
 392                         linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 393                 }
 394         }else{
 395                 /*send a bye*/
 396                 ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
 397                 linphone_core_abort_call(lc,call,_("Incompatible, check codecs or security settings..."));
 398         }
 399 }
 400
 401 static void call_ack(SalOp *op){
 402         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 403         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 404         if (call==NULL){
 405                 ms_warning("No call to be ACK'd");
 406                 return ;
 407         }
 408         if (call->media_pending){
 409                 SalMediaDescription *md=sal_call_get_final_media_description(op);
 410                 if (md && !sal_media_description_empty(md)){
 411                         linphone_core_update_streams (lc,call,md);
 412                         linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
 413                 }else{
 414                         /*send a bye*/
 415                         ms_error("Incompatible SDP response received in ACK, need to abort the call");
 416                         linphone_core_abort_call(lc,call,"No codec intersection");
 417                         return;
 418                 }
 419         }
 420 }
 421
 422 static void call_accept_update(LinphoneCore *lc, LinphoneCall *call){
 423         SalMediaDescription *md;
 424         SalMediaDescription *rmd=sal_call_get_remote_media_description(call->op);
 425         if ((rmd!=NULL) && (call->ice_session!=NULL)) {
 426                 linphone_core_update_ice_from_remote_media_description(call,rmd);
 427                 linphone_core_update_local_media_description_from_ice(call->localdesc,call->ice_session);
 428         }
 429         linphone_call_update_remote_session_id_and_ver(call);
 430         sal_call_accept(call->op);
 431         md=sal_call_get_final_media_description(call->op);
 432         if (md && !sal_media_description_empty(md))
 433                 linphone_core_update_streams(lc,call,md);
 434 }
 435
 436 static void call_resumed(LinphoneCore *lc, LinphoneCall *call){
 437         call_accept_update(lc,call);
 438         if(lc->vtable.display_status)
 439                 lc->vtable.display_status(lc,_("We have been resumed."));
 440         linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
 441         linphone_call_set_transfer_state(call, LinphoneCallIdle);
 442 }
 443
 444 static void call_paused_by_remote(LinphoneCore *lc, LinphoneCall *call){
 445         call_accept_update(lc,call);
 446         /* we are being paused */
 447         if(lc->vtable.display_status)
 448                 lc->vtable.display_status(lc,_("We are paused by other party."));
 449         linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
 450 }
 451
 452 static void call_updated_by_remote(LinphoneCore *lc, LinphoneCall *call){
 453         if(lc->vtable.display_status)
 454                 lc->vtable.display_status(lc,_("Call is updated by remote."));
 455         call->defer_update=FALSE;
 456         linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
 457         if (call->defer_update==FALSE){
 458                 linphone_core_accept_call_update(lc,call,NULL);
 459         }
 460 }
 461
 462 /* this callback is called when an incoming re-INVITE modifies the session*/
 463 static void call_updating(SalOp *op){
 464         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 465         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 466         SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
 467
 468         if (rmd==NULL){
 469                 /* case of a reINVITE without SDP */
 470                 call_accept_update(lc,call);
 471                 call->media_pending=TRUE;
 472                 return;
 473         }
 474
 475         switch(call->state){
 476                 case LinphoneCallPausedByRemote:
 477                         if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
 478                                 call_resumed(lc,call);
 479                         }else call_paused_by_remote(lc,call);
 480                 break;
 481                 case LinphoneCallStreamsRunning:
 482                 case LinphoneCallConnected:
 483                         if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
 484                                 call_paused_by_remote(lc,call);
 485                         }else{
 486                                 call_updated_by_remote(lc,call);
 487                         }
 488                 break;
 489                 default:
 490                         call_accept_update(lc,call);
 491         }
 492 }
 493
 494 static void call_terminated(SalOp *op, const char *from){
 495         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 496         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 497
 498         if (call==NULL) return;
 499
 500         switch(linphone_call_get_state(call)){
 501                 case LinphoneCallEnd:
 502                 case LinphoneCallError:
 503                         ms_warning("call_terminated: ignoring.");
 504                         return;
 505                 break;
 506                 case LinphoneCallIncomingReceived:
 507                 case LinphoneCallIncomingEarlyMedia:
 508                         call->reason=LinphoneReasonNotAnswered;
 509                 break;
 510                 default:
 511                 break;
 512         }
 513         ms_message("Current call terminated...");
 514         //we stop the call only if we have this current call or if we are in call
 515         if (lc->ringstream!=NULL && ( (ms_list_size(lc->calls)  == 1) || linphone_core_in_call(lc) )) {
 516                 ring_stop(lc->ringstream);
 517                 lc->ringstream=NULL;
 518         }
 519         linphone_call_stop_media_streams(call);
 520         if (lc->vtable.show!=NULL)
 521                 lc->vtable.show(lc);
 522         if (lc->vtable.display_status!=NULL)
 523                 lc->vtable.display_status(lc,_("Call terminated."));
 524
 525         linphone_call_set_state(call, LinphoneCallEnd,"Call ended");
 526 }
 527
 528 static void call_failure(SalOp *op, SalError error, SalReason sr, const char *details, int code){
 529         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 530         char *msg486=_("User is busy.");
 531         char *msg480=_("User is temporarily unavailable.");
 532         /*char *retrymsg=_("%s. Retry after %i minute(s).");*/
 533         char *msg600=_("User does not want to be disturbed.");
 534         char *msg603=_("Call declined.");
 535         const char *msg=details;
 536         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 537
 538         if (call==NULL){
 539                 ms_warning("Call faillure reported on already cleaned call ?");
 540                 return ;
 541         }
 542
 543         if (lc->vtable.show) lc->vtable.show(lc);
 544
 545         if (error==SalErrorNoResponse){
 546                 msg=_("No response.");
 547                 if (lc->vtable.display_status)
 548                         lc->vtable.display_status(lc,msg);
 549         }else if (error==SalErrorProtocol){
 550                 msg=details ? details : _("Protocol error.");
 551                 if (lc->vtable.display_status)
 552                         lc->vtable.display_status(lc, msg);
 553         }else if (error==SalErrorFailure){
 554                 switch(sr){
 555                         case SalReasonDeclined:
 556                                 msg=msg603;
 557                                 if (lc->vtable.display_status)
 558                                         lc->vtable.display_status(lc,msg603);
 559                         break;
 560                         case SalReasonBusy:
 561                                 msg=msg486;
 562                                 if (lc->vtable.display_status)
 563                                         lc->vtable.display_status(lc,msg486);
 564                         break;
 565                         case SalReasonRedirect:
 566                                 msg=_("Redirected");
 567                                 if (lc->vtable.display_status)
 568                                         lc->vtable.display_status(lc,msg);
 569                         break;
 570                         case SalReasonTemporarilyUnavailable:
 571                                 msg=msg480;
 572                                 if (lc->vtable.display_status)
 573                                         lc->vtable.display_status(lc,msg480);
 574                         break;
 575                         case SalReasonNotFound:
 576                                 if (lc->vtable.display_status)
 577                                         lc->vtable.display_status(lc,msg);
 578                         break;
 579                         case SalReasonDoNotDisturb:
 580                                 msg=msg600;
 581                                 if (lc->vtable.display_status)
 582                                         lc->vtable.display_status(lc,msg600);
 583                         break;
 584                         case SalReasonMedia:
 585                         //media_encryption_mandatory
 586                                 if (call->params.media_encryption == LinphoneMediaEncryptionSRTP &&
 587                                         !linphone_core_is_media_encryption_mandatory(lc)) {
 588                                         int i;
 589                                         ms_message("Outgoing call failed with SRTP (SAVP) enabled - retrying with AVP");
 590                                         linphone_call_stop_media_streams(call);
 591                                         if (call->state==LinphoneCallOutgoingInit || call->state==LinphoneCallOutgoingProgress){
 592                                                 /* clear SRTP local params */
 593                                                 call->params.media_encryption = LinphoneMediaEncryptionNone;
 594                                                 for(i=0; i<call->localdesc->n_active_streams; i++) {
 595                                                         call->localdesc->streams[i].proto = SalProtoRtpAvp;
 596                                                         memset(call->localdesc->streams[i].crypto, 0, sizeof(call->localdesc->streams[i].crypto));
 597                                                 }
 598                                                 linphone_core_start_invite(lc, call);
 599                                         }
 600                                         return;
 601                                 }
 602                                 msg=_("Incompatible media parameters.");
 603                                 if (lc->vtable.display_status)
 604                                         lc->vtable.display_status(lc,msg);
 605                         break;
 606                         default:
 607                                 if (lc->vtable.display_status)
 608                                         lc->vtable.display_status(lc,_("Call failed."));
 609                 }
 610         }
 611
 612         if (lc->ringstream!=NULL) {
 613                 ring_stop(lc->ringstream);
 614                 lc->ringstream=NULL;
 615         }
 616         linphone_call_stop_media_streams (call);
 617         if (call->referer && linphone_call_get_state(call->referer)==LinphoneCallPaused && call->referer->was_automatically_paused){
 618                 /*resume to the call that send us the refer automatically*/
 619                 linphone_core_resume_call(lc,call->referer);
 620         }
 621         if (sr == SalReasonDeclined) {
 622                 call->reason=LinphoneReasonDeclined;
 623                 linphone_call_set_state(call,LinphoneCallEnd,"Call declined.");
 624         } else if (sr == SalReasonNotFound) {
 625                 call->reason=LinphoneReasonNotFound;
 626                 linphone_call_set_state(call,LinphoneCallError,"User not found.");
 627         } else {
 628                 linphone_call_set_state(call,LinphoneCallError,msg);
 629         }
 630 }
 631
 632 static void call_released(SalOp *op){
 633         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 634         if (call!=NULL){
 635                 linphone_call_set_state(call,LinphoneCallReleased,"Call released");
 636         }else ms_error("call_released() for already destroyed call ?");
 637 }
 638
 639 static void auth_requested(SalOp *h, const char *realm, const char *username){
 640         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 641         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 642         LinphoneCall *call=is_a_linphone_call(sal_op_get_user_pointer(h));
 643
 644         if (call && call->ping_op==h){
 645                 /*don't request authentication for ping requests. Their purpose is just to get any
 646                  * answer to get the Via's received and rport parameters.
 647                  */
 648                 ms_message("auth_requested(): ignored for ping request.");
 649                 return;
 650         }
 651
 652         ms_message("auth_requested() for realm=%s, username=%s",realm,username);
 653
 654         if (ai && ai->works==FALSE && ai->usecount>=3){
 655                 /*case we tried 3 times to authenticate, without success */
 656                 /*Better is to stop (implemeted below in else statement), and retry later*/
 657                 if (ms_time(NULL)-ai->last_use_time>30){
 658                         ai->usecount=0; /*so that we can allow to retry */
 659                 }
 660         }
 661
 662         if (ai && (ai->works || ai->usecount<3)){
 663                 SalAuthInfo sai;
 664                 sai.username=ai->username;
 665                 sai.userid=ai->userid;
 666                 sai.realm=ai->realm;
 667                 sai.password=ai->passwd;
 668                 ms_message("auth_requested(): authenticating realm=%s, username=%s",realm,username);
 669                 sal_op_authenticate(h,&sai);
 670                 ai->usecount++;
 671                 ai->last_use_time=ms_time(NULL);
 672         }else{
 673                 if (ai && ai->works==FALSE) {
 674                         sal_op_cancel_authentication(h);
 675                 }
 676                 if (lc->vtable.auth_info_requested)
 677                         lc->vtable.auth_info_requested(lc,realm,username);
 678         }
 679 }
 680
 681 static void auth_success(SalOp *h, const char *realm, const char *username){
 682         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 683         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 684         if (ai){
 685                 ms_message("%s/%s authentication works.",realm,username);
 686                 ai->works=TRUE;
 687         }
 688 }
 689
 690 static void register_success(SalOp *op, bool_t registered){
 691         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 692         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 693         char *msg;
 694
 695         if (cfg->deletion_date!=0){
 696                 ms_message("Registration success for removed proxy config, ignored");
 697                 return;
 698         }
 699         linphone_proxy_config_set_error(cfg,LinphoneReasonNone);
 700         linphone_proxy_config_set_state(cfg, registered ? LinphoneRegistrationOk : LinphoneRegistrationCleared ,
 701                                         registered ? "Registration sucessful" : "Unregistration done");
 702         if (lc->vtable.display_status){
 703                 if (registered) msg=ms_strdup_printf(_("Registration on %s successful."),sal_op_get_proxy(op));
 704                 else msg=ms_strdup_printf(_("Unregistration on %s done."),sal_op_get_proxy(op));
 705                 lc->vtable.display_status(lc,msg);
 706                 ms_free(msg);
 707         }
 708
 709 }
 710
 711 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details){
 712         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 713         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 714
 715         if (cfg==NULL){
 716                 ms_warning("Registration failed for unknown proxy config.");
 717                 return ;
 718         }
 719         if (cfg->deletion_date!=0){
 720                 ms_message("Registration failed for removed proxy config, ignored");
 721                 return;
 722         }
 723         if (details==NULL)
 724                 details=_("no response timeout");
 725
 726         if (lc->vtable.display_status) {
 727                 char *msg=ortp_strdup_printf(_("Registration on %s failed: %s"),sal_op_get_proxy(op),details  );
 728                 lc->vtable.display_status(lc,msg);
 729                 ms_free(msg);
 730         }
 731         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 732                 linphone_proxy_config_set_error(cfg, LinphoneReasonBadCredentials);
 733         } else if (error == SalErrorNoResponse) {
 734                 linphone_proxy_config_set_error(cfg, LinphoneReasonNoResponse);
 735         }
 736         linphone_proxy_config_set_state(cfg,LinphoneRegistrationFailed,details);
 737         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 738                 const char *realm=NULL,*username=NULL;
 739                 if (sal_op_get_auth_requested(op,&realm,&username)==0){
 740                         if (lc->vtable.auth_info_requested)
 741                                 lc->vtable.auth_info_requested(lc,realm,username);
 742                 }
 743         }
 744 }
 745
 746 static void vfu_request(SalOp *op){
 747 #ifdef VIDEO_ENABLED
 748         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 749         if (call==NULL){
 750                 ms_warning("VFU request but no call !");
 751                 return ;
 752         }
 753         if (call->videostream)
 754                 video_stream_send_vfu(call->videostream);
 755 #endif
 756 }
 757
 758 static void dtmf_received(SalOp *op, char dtmf){
 759         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 760         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 761         if (lc->vtable.dtmf_received != NULL)
 762                 lc->vtable.dtmf_received(lc, call, dtmf);
 763 }
 764
 765 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 766         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 767         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 768         if (call){
 769                 if (call->refer_to!=NULL){
 770                         ms_free(call->refer_to);
 771                 }
 772                 call->refer_to=ms_strdup(referto);
 773                 call->refer_pending=TRUE;
 774                 linphone_call_set_state(call,LinphoneCallRefered,"Refered");
 775                 if (lc->vtable.display_status){
 776                         char *msg=ms_strdup_printf(_("We are transferred to %s"),referto);
 777                         lc->vtable.display_status(lc,msg);
 778                         ms_free(msg);
 779                 }
 780                 if (call->state!=LinphoneCallPaused){
 781                         ms_message("Automatically pausing current call to accept transfer.");
 782                         linphone_core_pause_call(lc,call);
 783                         call->was_automatically_paused=TRUE;
 784                         /*then we will start the refered when the pause is accepted, in order to serialize transactions within the dialog.
 785                          * Indeed we need to avoid to send a NOTIFY to inform about of state of the refered call while the pause isn't completed.
 786                         **/
 787                 }else linphone_core_start_refered_call(lc,call);
 788         }else if (lc->vtable.refer_received){
 789                 lc->vtable.refer_received(lc,referto);
 790         }
 791 }
 792
 793 static bool_t is_duplicate_msg(LinphoneCore *lc, const char *msg_id){
 794         MSList *elem=lc->last_recv_msg_ids;
 795         MSList *tail=NULL;
 796         int i;
 797         bool_t is_duplicate=FALSE;
 798         for(i=0;elem!=NULL;elem=elem->next,i++){
 799                 if (strcmp((const char*)elem->data,msg_id)==0){
 800                         is_duplicate=TRUE;
 801                 }
 802                 tail=elem;
 803         }
 804         if (!is_duplicate){
 805                 lc->last_recv_msg_ids=ms_list_prepend(lc->last_recv_msg_ids,ms_strdup(msg_id));
 806         }
 807         if (i>=10){
 808                 ms_free(tail->data);
 809                 lc->last_recv_msg_ids=ms_list_remove_link(lc->last_recv_msg_ids,tail);
 810         }
 811         return is_duplicate;
 812 }
 813
 814
 815 static void text_received(Sal *sal, const SalMessage *msg){
 816         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 817         if (is_duplicate_msg(lc,msg->message_id)==FALSE){
 818                 linphone_core_message_received(lc,msg->from,msg->text,msg->url);
 819         }
 820 }
 821
 822 static void notify(SalOp *op, const char *from, const char *msg){
 823         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 824         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 825         ms_message("get a %s notify from %s",msg,from);
 826         if(lc->vtable.notify_recv)
 827                 lc->vtable.notify_recv(lc,call,from,msg);
 828 }
 829
 830 static void notify_presence(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg){
 831         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 832         linphone_notify_recv(lc,op,ss,status);
 833 }
 834
 835 static void subscribe_received(SalOp *op, const char *from){
 836         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 837         linphone_subscription_new(lc,op,from);
 838 }
 839
 840 static void subscribe_closed(SalOp *op, const char *from){
 841         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 842         linphone_subscription_closed(lc,op);
 843 }
 844
 845 static void ping_reply(SalOp *op){
 846         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 847         ms_message("ping reply !");
 848         if (call){
 849                 if (call->state==LinphoneCallOutgoingInit){
 850                         call->ping_replied=TRUE;
 851                         linphone_core_proceed_with_invite_if_ready(call->core,call,NULL);
 852                 }
 853         }
 854         else
 855         {
 856                 ms_warning("ping reply without call attached...");
 857         }
 858 }
 859
 860 static void notify_refer(SalOp *op, SalReferStatus status){
 861         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 862         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 863         LinphoneCallState cstate;
 864         if (call==NULL) {
 865                 ms_warning("Receiving notify_refer for unknown call.");
 866                 return ;
 867         }
 868         switch(status){
 869                 case SalReferTrying:
 870                         cstate=LinphoneCallOutgoingProgress;
 871                 break;
 872                 case SalReferSuccess:
 873                         cstate=LinphoneCallConnected;
 874                 break;
 875                 case SalReferFailed:
 876                         cstate=LinphoneCallError;
 877                 break;
 878                 default:
 879                         cstate=LinphoneCallError;
 880         }
 881         linphone_call_set_transfer_state(call, cstate);
 882         if (cstate==LinphoneCallConnected){
 883                 /*automatically terminate the call as the transfer is complete.*/
 884                 linphone_core_terminate_call(lc,call);
 885         }
 886 }
 887
 888 static LinphoneChatMessageState chatStatusSal2Linphone(SalTextDeliveryStatus status){
 889         switch(status){
 890                 case SalTextDeliveryInProgress:
 891                         return LinphoneChatMessageStateInProgress;
 892                 case SalTextDeliveryDone:
 893                         return LinphoneChatMessageStateDelivered;
 894                 case SalTextDeliveryFailed:
 895                         return LinphoneChatMessageStateNotDelivered;
 896         }
 897         return LinphoneChatMessageStateIdle;
 898 }
 899
 900 static int op_equals(LinphoneCall *a, SalOp *b) {
 901         return a->op !=b; /*return 0 if equals*/
 902 }
 903 static void text_delivery_update(SalOp *op, SalTextDeliveryStatus status){
 904         LinphoneChatMessage *chat_msg=(LinphoneChatMessage* )sal_op_get_user_pointer(op);
 905         const MSList* calls = linphone_core_get_calls(chat_msg->chat_room->lc);
 906
 907         if (chat_msg && chat_msg->cb) {
 908                 chat_msg->cb(chat_msg
 909                         ,chatStatusSal2Linphone(status)
 910                         ,chat_msg->cb_ud);
 911         }
 912         linphone_chat_message_destroy(chat_msg);
 913
 914         if (!ms_list_find_custom((MSList*)calls, (MSCompareFunc) op_equals, op)) {
 915                 /*op was only create for messaging purpose, destroying*/
 916                 sal_op_release(op);
 917         }
 918 }
 919
 920 SalCallbacks linphone_sal_callbacks={
 921         call_received,
 922         call_ringing,
 923         call_accepted,
 924         call_ack,
 925         call_updating,
 926         call_terminated,
 927         call_failure,
 928         call_released,
 929         auth_requested,
 930         auth_success,
 931         register_success,
 932         register_failure,
 933         vfu_request,
 934         dtmf_received,
 935         refer_received,
 936         text_received,
 937         text_delivery_update,
 938         notify,
 939         notify_presence,
 940         notify_refer,
 941         subscribe_received,
 942         subscribe_closed,
 943         ping_reply,
 944 };
 945
 946