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 #ifdef BUILD_UPNP
 265         if ((linphone_core_get_firewall_policy(lc) == LinphonePolicyUseUpnp) && (call->upnp_session != NULL)) {
 266                 /* Defer ringing until the end of the ICE candidates gathering process. */
 267                 ms_message("Defer ringing to gather uPnP candidates");
 268                 return;
 269         }
 270 #endif //BUILD_UPNP
 271
 272         linphone_core_notify_incoming_call(lc,call);
 273 }
 274
 275 static void call_ringing(SalOp *h){
 276         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 277         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(h);
 278         SalMediaDescription *md;
 279
 280         if (call==NULL) return;
 281
 282         if (lc->vtable.display_status)
 283                 lc->vtable.display_status(lc,_("Remote ringing."));
 284
 285         md=sal_call_get_final_media_description(h);
 286         if (md==NULL){
 287                 if (lc->ringstream && lc->dmfs_playing_start_time!=0){
 288                         ring_stop(lc->ringstream);
 289                         lc->ringstream=NULL;
 290                         lc->dmfs_playing_start_time=0;
 291                 }
 292                 if (lc->ringstream!=NULL) return;       /*already ringing !*/
 293                 if (lc->sound_conf.play_sndcard!=NULL){
 294                         MSSndCard *ringcard=lc->sound_conf.lsd_card ? lc->sound_conf.lsd_card : lc->sound_conf.play_sndcard;
 295                         if (call->localdesc->streams[0].max_rate>0) ms_snd_card_set_preferred_sample_rate(ringcard, call->localdesc->streams[0].max_rate);
 296                         /*we release sound before playing ringback tone*/
 297                         if (call->audiostream)
 298                                 audio_stream_unprepare_sound(call->audiostream);
 299                         lc->ringstream=ring_start(lc->sound_conf.remote_ring,2000,ringcard);
 300                 }
 301                 ms_message("Remote ringing...");
 302                 if (lc->vtable.display_status)
 303                         lc->vtable.display_status(lc,_("Remote ringing..."));
 304                 linphone_call_set_state(call,LinphoneCallOutgoingRinging,"Remote ringing");
 305         }else{
 306                 /*accept early media */
 307                 if (call->audiostream && audio_stream_started(call->audiostream)){
 308                         /*streams already started */
 309                         ms_message("Early media already started.");
 310                         return;
 311                 }
 312                 if (lc->vtable.show) lc->vtable.show(lc);
 313                 if (lc->vtable.display_status)
 314                         lc->vtable.display_status(lc,_("Early media."));
 315                 linphone_call_set_state(call,LinphoneCallOutgoingEarlyMedia,"Early media");
 316                 if (lc->ringstream!=NULL){
 317                         ring_stop(lc->ringstream);
 318                         lc->ringstream=NULL;
 319                 }
 320                 ms_message("Doing early media...");
 321                 linphone_core_update_streams(lc,call,md);
 322         }
 323 }
 324
 325 /*
 326  * could be reach :
 327  *  - when the call is accepted
 328  *  - when a request is accepted (pause, resume)
 329  */
 330 static void call_accepted(SalOp *op){
 331         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 332         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 333         SalMediaDescription *md;
 334
 335         if (call==NULL){
 336                 ms_warning("No call to accept.");
 337                 return ;
 338         }
 339
 340         /* Handle remote ICE attributes if any. */
 341         if (call->ice_session != NULL) {
 342                 linphone_core_update_ice_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 343         }
 344 #ifdef BUILD_UPNP
 345         if (call->upnp_session != NULL) {
 346                 linphone_core_update_upnp_from_remote_media_description(call, sal_call_get_remote_media_description(op));
 347         }
 348 #endif //BUILD_UPNP
 349
 350         md=sal_call_get_final_media_description(op);
 351         call->params.has_video &= linphone_core_media_description_contains_video_stream(md);
 352
 353         if (call->state==LinphoneCallOutgoingProgress ||
 354             call->state==LinphoneCallOutgoingRinging ||
 355             call->state==LinphoneCallOutgoingEarlyMedia){
 356                 linphone_call_set_state(call,LinphoneCallConnected,"Connected");
 357                 if (call->referer) linphone_core_notify_refer_state(lc,call->referer,call);
 358         }
 359         if (md && !sal_media_description_empty(md) && !linphone_core_incompatible_security(lc,md)){
 360                 linphone_call_update_remote_session_id_and_ver(call);
 361                 if (sal_media_description_has_dir(md,SalStreamSendOnly) ||
 362                     sal_media_description_has_dir(md,SalStreamInactive)){
 363                         if (lc->vtable.display_status){
 364                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 365                                 char *msg=ms_strdup_printf(_("Call with %s is paused."),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,LinphoneCallPaused,"Call paused");
 372                         if (call->refer_pending)
 373                                 linphone_core_start_refered_call(lc,call);
 374                 }else if (sal_media_description_has_dir(md,SalStreamRecvOnly)){
 375                         /*we are put on hold when the call is initially accepted */
 376                         if (lc->vtable.display_status){
 377                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 378                                 char *msg=ms_strdup_printf(_("Call answered by %s - on hold."),tmp);
 379                                 lc->vtable.display_status(lc,msg);
 380                                 ms_free(tmp);
 381                                 ms_free(msg);
 382                         }
 383                         linphone_core_update_streams (lc,call,md);
 384                         linphone_call_set_state(call,LinphoneCallPausedByRemote,"Call paused by remote");
 385                 }else{
 386                         if (call->state!=LinphoneCallUpdating){
 387                                 if (call->state==LinphoneCallResuming){
 388                                         if (lc->vtable.display_status){
 389                                                 lc->vtable.display_status(lc,_("Call resumed."));
 390                                         }
 391                                 }else{
 392                                         if (lc->vtable.display_status){
 393                                                 char *tmp=linphone_call_get_remote_address_as_string (call);
 394                                                 char *msg=ms_strdup_printf(_("Call answered by %s."),tmp);
 395                                                 lc->vtable.display_status(lc,msg);
 396                                                 ms_free(tmp);
 397                                                 ms_free(msg);
 398                                         }
 399                                 }
 400                         }
 401                         linphone_core_update_streams (lc,call,md);
 402                         if (!call->current_params.in_conference)
 403                                 lc->current_call=call;
 404                         linphone_call_set_state(call, LinphoneCallStreamsRunning, "Streams running");
 405                 }
 406         }else{
 407                 /*send a bye*/
 408                 ms_error("Incompatible SDP offer received in 200Ok, need to abort the call");
 409                 linphone_core_abort_call(lc,call,_("Incompatible, check codecs or security settings..."));
 410         }
 411 }
 412
 413 static void call_ack(SalOp *op){
 414         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 415         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 416         if (call==NULL){
 417                 ms_warning("No call to be ACK'd");
 418                 return ;
 419         }
 420         if (call->media_pending){
 421                 SalMediaDescription *md=sal_call_get_final_media_description(op);
 422                 if (md && !sal_media_description_empty(md)){
 423                         linphone_core_update_streams (lc,call,md);
 424                         linphone_call_set_state (call,LinphoneCallStreamsRunning,"Connected (streams running)");
 425                 }else{
 426                         /*send a bye*/
 427                         ms_error("Incompatible SDP response received in ACK, need to abort the call");
 428                         linphone_core_abort_call(lc,call,"No codec intersection");
 429                         return;
 430                 }
 431         }
 432 }
 433
 434 static void call_accept_update(LinphoneCore *lc, LinphoneCall *call){
 435         SalMediaDescription *md;
 436         SalMediaDescription *rmd=sal_call_get_remote_media_description(call->op);
 437         if ((rmd!=NULL) && (call->ice_session!=NULL)) {
 438                 linphone_core_update_ice_from_remote_media_description(call,rmd);
 439                 linphone_core_update_local_media_description_from_ice(call->localdesc,call->ice_session);
 440         }
 441 #ifdef BUILD_UPNP
 442         if(call->upnp_session != NULL) {
 443                 linphone_core_update_upnp_from_remote_media_description(call, rmd);
 444                 linphone_core_update_local_media_description_from_upnp(call->localdesc,call->upnp_session);
 445         }
 446 #endif //BUILD_UPNP
 447         linphone_call_update_remote_session_id_and_ver(call);
 448         sal_call_accept(call->op);
 449         md=sal_call_get_final_media_description(call->op);
 450         if (md && !sal_media_description_empty(md))
 451                 linphone_core_update_streams(lc,call,md);
 452 }
 453
 454 static void call_resumed(LinphoneCore *lc, LinphoneCall *call){
 455         call_accept_update(lc,call);
 456         if(lc->vtable.display_status)
 457                 lc->vtable.display_status(lc,_("We have been resumed."));
 458         linphone_call_set_state(call,LinphoneCallStreamsRunning,"Connected (streams running)");
 459         linphone_call_set_transfer_state(call, LinphoneCallIdle);
 460 }
 461
 462 static void call_paused_by_remote(LinphoneCore *lc, LinphoneCall *call){
 463         call_accept_update(lc,call);
 464         /* we are being paused */
 465         if(lc->vtable.display_status)
 466                 lc->vtable.display_status(lc,_("We are paused by other party."));
 467         linphone_call_set_state (call,LinphoneCallPausedByRemote,"Call paused by remote");
 468 }
 469
 470 static void call_updated_by_remote(LinphoneCore *lc, LinphoneCall *call){
 471         if(lc->vtable.display_status)
 472                 lc->vtable.display_status(lc,_("Call is updated by remote."));
 473         call->defer_update=FALSE;
 474         linphone_call_set_state(call, LinphoneCallUpdatedByRemote,"Call updated by remote");
 475         if (call->defer_update==FALSE){
 476                 linphone_core_accept_call_update(lc,call,NULL);
 477         }
 478 }
 479
 480 /* this callback is called when an incoming re-INVITE modifies the session*/
 481 static void call_updating(SalOp *op){
 482         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 483         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 484         SalMediaDescription *rmd=sal_call_get_remote_media_description(op);
 485
 486         if (rmd==NULL){
 487                 /* case of a reINVITE without SDP */
 488                 call_accept_update(lc,call);
 489                 call->media_pending=TRUE;
 490                 return;
 491         }
 492
 493         switch(call->state){
 494                 case LinphoneCallPausedByRemote:
 495                         if (sal_media_description_has_dir(rmd,SalStreamSendRecv) || sal_media_description_has_dir(rmd,SalStreamRecvOnly)){
 496                                 call_resumed(lc,call);
 497                         }else call_paused_by_remote(lc,call);
 498                 break;
 499                 case LinphoneCallStreamsRunning:
 500                 case LinphoneCallConnected:
 501                         if (sal_media_description_has_dir(rmd,SalStreamSendOnly) || sal_media_description_has_dir(rmd,SalStreamInactive)){
 502                                 call_paused_by_remote(lc,call);
 503                         }else{
 504                                 call_updated_by_remote(lc,call);
 505                         }
 506                 break;
 507                 default:
 508                         call_accept_update(lc,call);
 509         }
 510 }
 511
 512 static void call_terminated(SalOp *op, const char *from){
 513         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 514         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 515
 516         if (call==NULL) return;
 517
 518         switch(linphone_call_get_state(call)){
 519                 case LinphoneCallEnd:
 520                 case LinphoneCallError:
 521                         ms_warning("call_terminated: ignoring.");
 522                         return;
 523                 break;
 524                 case LinphoneCallIncomingReceived:
 525                 case LinphoneCallIncomingEarlyMedia:
 526                         call->reason=LinphoneReasonNotAnswered;
 527                 break;
 528                 default:
 529                 break;
 530         }
 531         ms_message("Current call terminated...");
 532         //we stop the call only if we have this current call or if we are in call
 533         if (lc->ringstream!=NULL && ( (ms_list_size(lc->calls)  == 1) || linphone_core_in_call(lc) )) {
 534                 ring_stop(lc->ringstream);
 535                 lc->ringstream=NULL;
 536         }
 537         linphone_call_stop_media_streams(call);
 538         if (lc->vtable.show!=NULL)
 539                 lc->vtable.show(lc);
 540         if (lc->vtable.display_status!=NULL)
 541                 lc->vtable.display_status(lc,_("Call terminated."));
 542
 543 #ifdef BUILD_UPNP
 544         linphone_call_delete_upnp_session(call);
 545 #endif //BUILD_UPNP
 546
 547         linphone_call_set_state(call, LinphoneCallEnd,"Call ended");
 548 }
 549
 550 static void call_failure(SalOp *op, SalError error, SalReason sr, const char *details, int code){
 551         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 552         char *msg486=_("User is busy.");
 553         char *msg480=_("User is temporarily unavailable.");
 554         /*char *retrymsg=_("%s. Retry after %i minute(s).");*/
 555         char *msg600=_("User does not want to be disturbed.");
 556         char *msg603=_("Call declined.");
 557         const char *msg=details;
 558         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 559
 560         if (call==NULL){
 561                 ms_warning("Call faillure reported on already cleaned call ?");
 562                 return ;
 563         }
 564
 565         if (lc->vtable.show) lc->vtable.show(lc);
 566
 567         if (error==SalErrorNoResponse){
 568                 msg=_("No response.");
 569                 if (lc->vtable.display_status)
 570                         lc->vtable.display_status(lc,msg);
 571         }else if (error==SalErrorProtocol){
 572                 msg=details ? details : _("Protocol error.");
 573                 if (lc->vtable.display_status)
 574                         lc->vtable.display_status(lc, msg);
 575         }else if (error==SalErrorFailure){
 576                 switch(sr){
 577                         case SalReasonDeclined:
 578                                 msg=msg603;
 579                                 if (lc->vtable.display_status)
 580                                         lc->vtable.display_status(lc,msg603);
 581                         break;
 582                         case SalReasonBusy:
 583                                 msg=msg486;
 584                                 if (lc->vtable.display_status)
 585                                         lc->vtable.display_status(lc,msg486);
 586                         break;
 587                         case SalReasonRedirect:
 588                                 msg=_("Redirected");
 589                                 if (lc->vtable.display_status)
 590                                         lc->vtable.display_status(lc,msg);
 591                         break;
 592                         case SalReasonTemporarilyUnavailable:
 593                                 msg=msg480;
 594                                 if (lc->vtable.display_status)
 595                                         lc->vtable.display_status(lc,msg480);
 596                         break;
 597                         case SalReasonNotFound:
 598                                 if (lc->vtable.display_status)
 599                                         lc->vtable.display_status(lc,msg);
 600                         break;
 601                         case SalReasonDoNotDisturb:
 602                                 msg=msg600;
 603                                 if (lc->vtable.display_status)
 604                                         lc->vtable.display_status(lc,msg600);
 605                         break;
 606                         case SalReasonMedia:
 607                         //media_encryption_mandatory
 608                                 if (call->params.media_encryption == LinphoneMediaEncryptionSRTP &&
 609                                         !linphone_core_is_media_encryption_mandatory(lc)) {
 610                                         int i;
 611                                         ms_message("Outgoing call failed with SRTP (SAVP) enabled - retrying with AVP");
 612                                         linphone_call_stop_media_streams(call);
 613                                         if (call->state==LinphoneCallOutgoingInit || call->state==LinphoneCallOutgoingProgress){
 614                                                 /* clear SRTP local params */
 615                                                 call->params.media_encryption = LinphoneMediaEncryptionNone;
 616                                                 for(i=0; i<call->localdesc->n_active_streams; i++) {
 617                                                         call->localdesc->streams[i].proto = SalProtoRtpAvp;
 618                                                         memset(call->localdesc->streams[i].crypto, 0, sizeof(call->localdesc->streams[i].crypto));
 619                                                 }
 620                                                 linphone_core_start_invite(lc, call);
 621                                         }
 622                                         return;
 623                                 }
 624                                 msg=_("Incompatible media parameters.");
 625                                 if (lc->vtable.display_status)
 626                                         lc->vtable.display_status(lc,msg);
 627                         break;
 628                         default:
 629                                 if (lc->vtable.display_status)
 630                                         lc->vtable.display_status(lc,_("Call failed."));
 631                 }
 632         }
 633
 634         if (lc->ringstream!=NULL) {
 635                 ring_stop(lc->ringstream);
 636                 lc->ringstream=NULL;
 637         }
 638         linphone_call_stop_media_streams (call);
 639         if (call->referer && linphone_call_get_state(call->referer)==LinphoneCallPaused && call->referer->was_automatically_paused){
 640                 /*resume to the call that send us the refer automatically*/
 641                 linphone_core_resume_call(lc,call->referer);
 642         }
 643
 644 #ifdef BUILD_UPNP
 645         linphone_call_delete_upnp_session(call);
 646 #endif //BUILD_UPNP
 647
 648         if (sr == SalReasonDeclined) {
 649                 call->reason=LinphoneReasonDeclined;
 650                 linphone_call_set_state(call,LinphoneCallEnd,"Call declined.");
 651         } else if (sr == SalReasonNotFound) {
 652                 call->reason=LinphoneReasonNotFound;
 653                 linphone_call_set_state(call,LinphoneCallError,"User not found.");
 654         } else if (sr == SalReasonBusy) {
 655                 call->reason=LinphoneReasonBusy;
 656                 linphone_call_set_state(call,LinphoneCallError,"User is busy.");
 657         } else {
 658                 linphone_call_set_state(call,LinphoneCallError,msg);
 659         }
 660 }
 661
 662 static void call_released(SalOp *op){
 663         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 664         if (call!=NULL){
 665                 linphone_call_set_state(call,LinphoneCallReleased,"Call released");
 666         }else ms_error("call_released() for already destroyed call ?");
 667 }
 668
 669 static void auth_requested(SalOp *h, const char *realm, const char *username){
 670         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 671         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 672         LinphoneCall *call=is_a_linphone_call(sal_op_get_user_pointer(h));
 673
 674         if (call && call->ping_op==h){
 675                 /*don't request authentication for ping requests. Their purpose is just to get any
 676                  * answer to get the Via's received and rport parameters.
 677                  */
 678                 ms_message("auth_requested(): ignored for ping request.");
 679                 return;
 680         }
 681
 682         ms_message("auth_requested() for realm=%s, username=%s",realm,username);
 683
 684         if (ai && ai->works==FALSE && ai->usecount>=3){
 685                 /*case we tried 3 times to authenticate, without success */
 686                 /*Better is to stop (implemeted below in else statement), and retry later*/
 687                 if (ms_time(NULL)-ai->last_use_time>30){
 688                         ai->usecount=0; /*so that we can allow to retry */
 689                 }
 690         }
 691
 692         if (ai && (ai->works || ai->usecount<3)){
 693                 SalAuthInfo sai;
 694                 sai.username=ai->username;
 695                 sai.userid=ai->userid;
 696                 sai.realm=ai->realm;
 697                 sai.password=ai->passwd;
 698                 ms_message("auth_requested(): authenticating realm=%s, username=%s",realm,username);
 699                 sal_op_authenticate(h,&sai);
 700                 ai->usecount++;
 701                 ai->last_use_time=ms_time(NULL);
 702         }else{
 703                 if (ai && ai->works==FALSE) {
 704                         sal_op_cancel_authentication(h);
 705                 }
 706                 if (lc->vtable.auth_info_requested)
 707                         lc->vtable.auth_info_requested(lc,realm,username);
 708         }
 709 }
 710
 711 static void auth_success(SalOp *h, const char *realm, const char *username){
 712         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(h));
 713         LinphoneAuthInfo *ai=(LinphoneAuthInfo*)linphone_core_find_auth_info(lc,realm,username);
 714         if (ai){
 715                 ms_message("%s/%s authentication works.",realm,username);
 716                 ai->works=TRUE;
 717         }
 718 }
 719
 720 static void register_success(SalOp *op, bool_t registered){
 721         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 722         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 723         char *msg;
 724
 725         if (cfg->deletion_date!=0){
 726                 ms_message("Registration success for removed proxy config, ignored");
 727                 return;
 728         }
 729         linphone_proxy_config_set_error(cfg,LinphoneReasonNone);
 730         linphone_proxy_config_set_state(cfg, registered ? LinphoneRegistrationOk : LinphoneRegistrationCleared ,
 731                                         registered ? "Registration sucessful" : "Unregistration done");
 732         if (lc->vtable.display_status){
 733                 if (registered) msg=ms_strdup_printf(_("Registration on %s successful."),sal_op_get_proxy(op));
 734                 else msg=ms_strdup_printf(_("Unregistration on %s done."),sal_op_get_proxy(op));
 735                 lc->vtable.display_status(lc,msg);
 736                 ms_free(msg);
 737         }
 738
 739 }
 740
 741 static void register_failure(SalOp *op, SalError error, SalReason reason, const char *details){
 742         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 743         LinphoneProxyConfig *cfg=(LinphoneProxyConfig*)sal_op_get_user_pointer(op);
 744
 745         if (cfg==NULL){
 746                 ms_warning("Registration failed for unknown proxy config.");
 747                 return ;
 748         }
 749         if (cfg->deletion_date!=0){
 750                 ms_message("Registration failed for removed proxy config, ignored");
 751                 return;
 752         }
 753         if (details==NULL)
 754                 details=_("no response timeout");
 755
 756         if (lc->vtable.display_status) {
 757                 char *msg=ortp_strdup_printf(_("Registration on %s failed: %s"),sal_op_get_proxy(op),details  );
 758                 lc->vtable.display_status(lc,msg);
 759                 ms_free(msg);
 760         }
 761         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 762                 linphone_proxy_config_set_error(cfg, LinphoneReasonBadCredentials);
 763         } else if (error == SalErrorNoResponse) {
 764                 linphone_proxy_config_set_error(cfg, LinphoneReasonNoResponse);
 765         }
 766         linphone_proxy_config_set_state(cfg,LinphoneRegistrationFailed,details);
 767         if (error== SalErrorFailure && reason == SalReasonForbidden) {
 768                 const char *realm=NULL,*username=NULL;
 769                 if (sal_op_get_auth_requested(op,&realm,&username)==0){
 770                         if (lc->vtable.auth_info_requested)
 771                                 lc->vtable.auth_info_requested(lc,realm,username);
 772                 }
 773         }
 774 }
 775
 776 static void vfu_request(SalOp *op){
 777 #ifdef VIDEO_ENABLED
 778         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 779         if (call==NULL){
 780                 ms_warning("VFU request but no call !");
 781                 return ;
 782         }
 783         if (call->videostream)
 784                 video_stream_send_vfu(call->videostream);
 785 #endif
 786 }
 787
 788 static void dtmf_received(SalOp *op, char dtmf){
 789         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 790         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 791         if (lc->vtable.dtmf_received != NULL)
 792                 lc->vtable.dtmf_received(lc, call, dtmf);
 793 }
 794
 795 static void refer_received(Sal *sal, SalOp *op, const char *referto){
 796         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal);
 797         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer(op);
 798         if (call){
 799                 if (call->refer_to!=NULL){
 800                         ms_free(call->refer_to);
 801                 }
 802                 call->refer_to=ms_strdup(referto);
 803                 call->refer_pending=TRUE;
 804                 linphone_call_set_state(call,LinphoneCallRefered,"Refered");
 805                 if (lc->vtable.display_status){
 806                         char *msg=ms_strdup_printf(_("We are transferred to %s"),referto);
 807                         lc->vtable.display_status(lc,msg);
 808                         ms_free(msg);
 809                 }
 810                 if (call->state!=LinphoneCallPaused){
 811                         ms_message("Automatically pausing current call to accept transfer.");
 812                         linphone_core_pause_call(lc,call);
 813                         call->was_automatically_paused=TRUE;
 814                         /*then we will start the refered when the pause is accepted, in order to serialize transactions within the dialog.
 815                          * Indeed we need to avoid to send a NOTIFY to inform about of state of the refered call while the pause isn't completed.
 816                         **/
 817                 }else linphone_core_start_refered_call(lc,call);
 818         }else if (lc->vtable.refer_received){
 819                 lc->vtable.refer_received(lc,referto);
 820         }
 821 }
 822
 823 static bool_t is_duplicate_msg(LinphoneCore *lc, const char *msg_id){
 824         MSList *elem=lc->last_recv_msg_ids;
 825         MSList *tail=NULL;
 826         int i;
 827         bool_t is_duplicate=FALSE;
 828         for(i=0;elem!=NULL;elem=elem->next,i++){
 829                 if (strcmp((const char*)elem->data,msg_id)==0){
 830                         is_duplicate=TRUE;
 831                 }
 832                 tail=elem;
 833         }
 834         if (!is_duplicate){
 835                 lc->last_recv_msg_ids=ms_list_prepend(lc->last_recv_msg_ids,ms_strdup(msg_id));
 836         }
 837         if (i>=10){
 838                 ms_free(tail->data);
 839                 lc->last_recv_msg_ids=ms_list_remove_link(lc->last_recv_msg_ids,tail);
 840         }
 841         return is_duplicate;
 842 }
 843
 844
 845 static void text_received(SalOp *op, const SalMessage *msg){
 846         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 847         if (is_duplicate_msg(lc,msg->message_id)==FALSE){
 848                 linphone_core_message_received(lc,op,msg);
 849         }
 850 }
 851
 852 static void notify(SalOp *op, const char *from, const char *msg){
 853         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 854         LinphoneCall *call=(LinphoneCall*)sal_op_get_user_pointer (op);
 855         ms_message("get a %s notify from %s",msg,from);
 856         if(lc->vtable.notify_recv)
 857                 lc->vtable.notify_recv(lc,call,from,msg);
 858 }
 859
 860 static void notify_presence(SalOp *op, SalSubscribeStatus ss, SalPresenceStatus status, const char *msg){
 861         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 862         linphone_notify_recv(lc,op,ss,status);
 863 }
 864
 865 static void subscribe_received(SalOp *op, const char *from){
 866         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 867         linphone_subscription_new(lc,op,from);
 868 }
 869
 870 static void subscribe_closed(SalOp *op, const char *from){
 871         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 872         linphone_subscription_closed(lc,op);
 873 }
 874
 875 static void ping_reply(SalOp *op){
 876         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 877         ms_message("ping reply !");
 878         if (call){
 879                 if (call->state==LinphoneCallOutgoingInit){
 880                         call->ping_replied=TRUE;
 881                         linphone_core_proceed_with_invite_if_ready(call->core,call,NULL);
 882                 }
 883         }
 884         else
 885         {
 886                 ms_warning("ping reply without call attached...");
 887         }
 888 }
 889
 890 static void notify_refer(SalOp *op, SalReferStatus status){
 891         LinphoneCore *lc=(LinphoneCore *)sal_get_user_pointer(sal_op_get_sal(op));
 892         LinphoneCall *call=(LinphoneCall*) sal_op_get_user_pointer(op);
 893         LinphoneCallState cstate;
 894         if (call==NULL) {
 895                 ms_warning("Receiving notify_refer for unknown call.");
 896                 return ;
 897         }
 898         switch(status){
 899                 case SalReferTrying:
 900                         cstate=LinphoneCallOutgoingProgress;
 901                 break;
 902                 case SalReferSuccess:
 903                         cstate=LinphoneCallConnected;
 904                 break;
 905                 case SalReferFailed:
 906                         cstate=LinphoneCallError;
 907                 break;
 908                 default:
 909                         cstate=LinphoneCallError;
 910         }
 911         linphone_call_set_transfer_state(call, cstate);
 912         if (cstate==LinphoneCallConnected){
 913                 /*automatically terminate the call as the transfer is complete.*/
 914                 linphone_core_terminate_call(lc,call);
 915         }
 916 }
 917
 918 static LinphoneChatMessageState chatStatusSal2Linphone(SalTextDeliveryStatus status){
 919         switch(status){
 920                 case SalTextDeliveryInProgress:
 921                         return LinphoneChatMessageStateInProgress;
 922                 case SalTextDeliveryDone:
 923                         return LinphoneChatMessageStateDelivered;
 924                 case SalTextDeliveryFailed:
 925                         return LinphoneChatMessageStateNotDelivered;
 926         }
 927         return LinphoneChatMessageStateIdle;
 928 }
 929
 930 static int op_equals(LinphoneCall *a, SalOp *b) {
 931         return a->op !=b; /*return 0 if equals*/
 932 }
 933 static void text_delivery_update(SalOp *op, SalTextDeliveryStatus status){
 934         LinphoneChatMessage *chat_msg=(LinphoneChatMessage* )sal_op_get_user_pointer(op);
 935         const MSList* calls = linphone_core_get_calls(chat_msg->chat_room->lc);
 936
 937         linphone_core_set_message_state(chat_msg->chat_room,chat_msg->message,chatStatusSal2Linphone(status),chat_msg->time);
 938         if (chat_msg && chat_msg->cb) {
 939                 chat_msg->cb(chat_msg
 940                         ,chatStatusSal2Linphone(status)
 941                         ,chat_msg->cb_ud);
 942         }
 943         linphone_chat_message_destroy(chat_msg);
 944
 945         if (!ms_list_find_custom((MSList*)calls, (MSCompareFunc) op_equals, op)) {
 946                 /*op was only create for messaging purpose, destroying*/
 947                 sal_op_release(op);
 948         }
 949 }
 950
 951 SalCallbacks linphone_sal_callbacks={
 952         call_received,
 953         call_ringing,
 954         call_accepted,
 955         call_ack,
 956         call_updating,
 957         call_terminated,
 958         call_failure,
 959         call_released,
 960         auth_requested,
 961         auth_success,
 962         register_success,
 963         register_failure,
 964         vfu_request,
 965         dtmf_received,
 966         refer_received,
 967         text_received,
 968         text_delivery_update,
 969         notify,
 970         notify_presence,
 971         notify_refer,
 972         subscribe_received,
 973         subscribe_closed,
 974         ping_reply,
 975 };
 976
 977