sjero.net Git - linphone/blob - coreapi/sal_eXosip2.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 #include "sal_eXosip2.h"
  21
  22 #include "offeranswer.h"
  23
  24
  25 static void _osip_list_set_empty(osip_list_t *l, void (*freefunc)(void*)){
  26         void *data;
  27         while((data=osip_list_get(l,0))!=NULL){
  28                 osip_list_remove(l,0);
  29                 freefunc(data);
  30         }
  31 }
  32
  33 void sal_get_default_local_ip(Sal *sal, int address_family,char *ip, size_t iplen){
  34         if (eXosip_guess_localip(address_family,ip,iplen)<0){
  35                 /*default to something */
  36                 strncpy(ip,address_family==AF_INET6 ? "::1" : "127.0.0.1",iplen);
  37                 ms_error("Could not find default routable ip address !");
  38         }
  39 }
  40
  41 static SalOp * sal_find_register(Sal *sal, int rid){
  42         const MSList *elem;
  43         SalOp *op;
  44         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  45                 op=(SalOp*)elem->data;
  46                 if (op->rid==rid) return op;
  47         }
  48         return NULL;
  49 }
  50
  51 static void sal_add_register(Sal *sal, SalOp *op){
  52         sal->registers=ms_list_append(sal->registers,op);
  53 }
  54
  55 static void sal_remove_register(Sal *sal, int rid){
  56         MSList *elem;
  57         SalOp *op;
  58         for(elem=sal->registers;elem!=NULL;elem=elem->next){
  59                 op=(SalOp*)elem->data;
  60                 if (op->rid==rid) {
  61                         sal->registers=ms_list_remove_link(sal->registers,elem);
  62                         return;
  63                 }
  64         }
  65 }
  66
  67 static SalOp * sal_find_other(Sal *sal, osip_message_t *response){
  68         const MSList *elem;
  69         SalOp *op;
  70         osip_call_id_t *callid=osip_message_get_call_id(response);
  71         if (callid==NULL) {
  72                 ms_error("There is no call-id in this response !");
  73                 return NULL;
  74         }
  75         for(elem=sal->other_transactions;elem!=NULL;elem=elem->next){
  76                 op=(SalOp*)elem->data;
  77                 if (osip_call_id_match(callid,op->call_id)==0) return op;
  78         }
  79         return NULL;
  80 }
  81
  82 static void sal_add_other(Sal *sal, SalOp *op, osip_message_t *request){
  83         osip_call_id_t *callid=osip_message_get_call_id(request);
  84         if (callid==NULL) {
  85                 ms_error("There is no call id in the request !");
  86                 return;
  87         }
  88         osip_call_id_clone(callid,&op->call_id);
  89         sal->other_transactions=ms_list_append(sal->other_transactions,op);
  90 }
  91
  92 static void sal_remove_other(Sal *sal, SalOp *op){
  93         sal->other_transactions=ms_list_remove(sal->other_transactions,op);
  94 }
  95
  96
  97 static void sal_add_pending_auth(Sal *sal, SalOp *op){
  98         sal->pending_auths=ms_list_append(sal->pending_auths,op);
  99 }
 100
 101
 102 static void sal_remove_pending_auth(Sal *sal, SalOp *op){
 103         sal->pending_auths=ms_list_remove(sal->pending_auths,op);
 104 }
 105
 106 void sal_exosip_fix_route(SalOp *op){
 107         if (sal_op_get_route(op)!=NULL){
 108                 osip_route_t *rt=NULL;
 109                 osip_uri_param_t *lr_param=NULL;
 110
 111                 osip_route_init(&rt);
 112                 if (osip_route_parse(rt,sal_op_get_route(op))<0){
 113                         ms_warning("Bad route  %s!",sal_op_get_route(op));
 114                         sal_op_set_route(op,NULL);
 115                 }else{
 116                         /* check if the lr parameter is set , if not add it */
 117                         osip_uri_uparam_get_byname(rt->url, "lr", &lr_param);
 118                         if (lr_param==NULL){
 119                                 char *tmproute;
 120                                 osip_uri_uparam_add(rt->url,osip_strdup("lr"),NULL);
 121                                 osip_route_to_str(rt,&tmproute);
 122                                 sal_op_set_route(op,tmproute);
 123                                 osip_free(tmproute);
 124                         }
 125                 }
 126                 osip_route_free(rt);
 127         }
 128 }
 129
 130 SalOp * sal_op_new(Sal *sal){
 131         SalOp *op=ms_new(SalOp,1);
 132         __sal_op_init(op,sal);
 133         op->cid=op->did=op->tid=op->rid=op->nid=op->sid=-1;
 134         op->result=NULL;
 135         op->supports_session_timers=FALSE;
 136         op->sdp_offering=TRUE;
 137         op->pending_auth=NULL;
 138         op->sdp_answer=NULL;
 139         op->reinvite=FALSE;
 140         op->call_id=NULL;
 141         return op;
 142 }
 143
 144 void sal_op_release(SalOp *op){
 145         if (op->sdp_answer)
 146                 sdp_message_free(op->sdp_answer);
 147         if (op->pending_auth)
 148                 eXosip_event_free(op->pending_auth);
 149         if (op->rid!=-1){
 150                 sal_remove_register(op->base.root,op->rid);
 151         }
 152         if (op->cid!=-1){
 153                 ms_message("Cleaning cid %i",op->cid);
 154                 eXosip_call_set_reference(op->cid,NULL);
 155         }
 156         if (op->sid!=-1){
 157                 sal_remove_out_subscribe(op->base.root,op);
 158         }
 159         if (op->nid!=-1){
 160                 sal_remove_in_subscribe(op->base.root,op);
 161                 if (op->call_id)
 162                         osip_call_id_free(op->call_id);
 163                 op->call_id=NULL;
 164         }
 165         if (op->pending_auth){
 166                 sal_remove_pending_auth(op->base.root,op);
 167         }
 168         if (op->result)
 169                 sal_media_description_unref(op->result);
 170         if (op->call_id){
 171                 sal_remove_other(op->base.root,op);
 172                 osip_call_id_free(op->call_id);
 173         }
 174         __sal_op_free(op);
 175 }
 176
 177 static void _osip_trace_func(char *fi, int li, osip_trace_level_t level, char *chfr, va_list ap){
 178         int ortp_level=ORTP_DEBUG;
 179         switch(level){
 180                 case OSIP_INFO1:
 181                 case OSIP_INFO2:
 182                 case OSIP_INFO3:
 183                 case OSIP_INFO4:
 184                         ortp_level=ORTP_MESSAGE;
 185                         break;
 186                 case OSIP_WARNING:
 187                         ortp_level=ORTP_WARNING;
 188                         break;
 189                 case OSIP_ERROR:
 190                 case OSIP_BUG:
 191                         ortp_level=ORTP_ERROR;
 192                         break;
 193                 case OSIP_FATAL:
 194                         ortp_level=ORTP_FATAL;
 195                         break;
 196                 case END_TRACE_LEVEL:
 197                         break;
 198         }
 199         if (ortp_log_level_enabled(level)){
 200                 int len=strlen(chfr);
 201                 char *chfrdup=ortp_strdup(chfr);
 202                 /*need to remove endline*/
 203                 if (len>1){
 204                         if (chfrdup[len-1]=='\n')
 205                                 chfrdup[len-1]='\0';
 206                         if (chfrdup[len-2]=='\r')
 207                                 chfrdup[len-2]='\0';
 208                 }
 209                 ortp_logv(ortp_level,chfrdup,ap);
 210                 ortp_free(chfrdup);
 211         }
 212 }
 213
 214
 215 Sal * sal_init(){
 216         static bool_t firsttime=TRUE;
 217         if (firsttime){
 218                 osip_trace_initialize_func (OSIP_INFO4,&_osip_trace_func);
 219                 firsttime=FALSE;
 220         }
 221         eXosip_init();
 222         return ms_new0(Sal,1);
 223 }
 224
 225 void sal_uninit(Sal* sal){
 226         eXosip_quit();
 227         ms_free(sal);
 228 }
 229
 230 void sal_set_user_pointer(Sal *sal, void *user_data){
 231         sal->up=user_data;
 232 }
 233
 234 void *sal_get_user_pointer(const Sal *sal){
 235         return sal->up;
 236 }
 237
 238 static void unimplemented_stub(){
 239         ms_warning("Unimplemented SAL callback");
 240 }
 241
 242 void sal_set_callbacks(Sal *ctx, const SalCallbacks *cbs){
 243         memcpy(&ctx->callbacks,cbs,sizeof(*cbs));
 244         if (ctx->callbacks.call_received==NULL)
 245                 ctx->callbacks.call_received=(SalOnCallReceived)unimplemented_stub;
 246         if (ctx->callbacks.call_ringing==NULL)
 247                 ctx->callbacks.call_ringing=(SalOnCallRinging)unimplemented_stub;
 248         if (ctx->callbacks.call_accepted==NULL)
 249                 ctx->callbacks.call_accepted=(SalOnCallAccepted)unimplemented_stub;
 250         if (ctx->callbacks.call_failure==NULL)
 251                 ctx->callbacks.call_failure=(SalOnCallFailure)unimplemented_stub;
 252         if (ctx->callbacks.call_terminated==NULL)
 253                 ctx->callbacks.call_terminated=(SalOnCallTerminated)unimplemented_stub;
 254         if (ctx->callbacks.call_updated==NULL)
 255                 ctx->callbacks.call_updated=(SalOnCallUpdated)unimplemented_stub;
 256         if (ctx->callbacks.auth_requested==NULL)
 257                 ctx->callbacks.auth_requested=(SalOnAuthRequested)unimplemented_stub;
 258         if (ctx->callbacks.auth_success==NULL)
 259                 ctx->callbacks.auth_success=(SalOnAuthSuccess)unimplemented_stub;
 260         if (ctx->callbacks.register_success==NULL)
 261                 ctx->callbacks.register_success=(SalOnRegisterSuccess)unimplemented_stub;
 262         if (ctx->callbacks.register_failure==NULL)
 263                 ctx->callbacks.register_failure=(SalOnRegisterFailure)unimplemented_stub;
 264         if (ctx->callbacks.dtmf_received==NULL)
 265                 ctx->callbacks.dtmf_received=(SalOnDtmfReceived)unimplemented_stub;
 266         if (ctx->callbacks.notify==NULL)
 267                 ctx->callbacks.notify=(SalOnNotify)unimplemented_stub;
 268         if (ctx->callbacks.subscribe_received==NULL)
 269                 ctx->callbacks.subscribe_received=(SalOnSubscribeReceived)unimplemented_stub;
 270         if (ctx->callbacks.text_received==NULL)
 271                 ctx->callbacks.text_received=(SalOnTextReceived)unimplemented_stub;
 272         if (ctx->callbacks.internal_message==NULL)
 273                 ctx->callbacks.internal_message=(SalOnInternalMsg)unimplemented_stub;
 274         if (ctx->callbacks.ping_reply==NULL)
 275                 ctx->callbacks.ping_reply=(SalOnPingReply)unimplemented_stub;
 276 }
 277
 278 int sal_listen_port(Sal *ctx, const char *addr, int port, SalTransport tr, int is_secure){
 279         int err;
 280         bool_t ipv6;
 281         int proto=IPPROTO_UDP;
 282
 283         if (ctx->running) eXosip_quit();
 284         eXosip_init();
 285         err=0;
 286         eXosip_set_option(13,&err); /*13=EXOSIP_OPT_SRV_WITH_NAPTR, as it is an enum value, we can't use it unless we are sure of the
 287                                         version of eXosip, which is not the case*/
 288         /*see if it looks like an IPv6 address*/
 289         ipv6=strchr(addr,':')!=NULL;
 290         eXosip_enable_ipv6(ipv6);
 291
 292         if (tr!=SalTransportDatagram || is_secure){
 293                 ms_fatal("SIP over TCP or TLS or DTLS is not supported yet.");
 294                 return -1;
 295         }
 296
 297         err=eXosip_listen_addr(proto, addr, port, ipv6 ?  PF_INET6 : PF_INET, 0);
 298         return err;
 299 }
 300
 301 void sal_set_user_agent(Sal *ctx, const char *user_agent){
 302         eXosip_set_user_agent(user_agent);
 303 }
 304
 305 void sal_use_session_timers(Sal *ctx, int expires){
 306         ctx->session_expires=expires;
 307 }
 308
 309 MSList *sal_get_pending_auths(Sal *sal){
 310         return ms_list_copy(sal->pending_auths);
 311 }
 312
 313 static int extract_received_rport(osip_message_t *msg, const char **received, int *rportval){
 314         osip_via_t *via=NULL;
 315         osip_generic_param_t *param=NULL;
 316         const char *rport;
 317
 318         osip_message_get_via(msg,0,&via);
 319         if (!via) return -1;
 320         osip_via_param_get_byname(via,"rport",&param);
 321         if (param) {
 322                 rport=param->gvalue;
 323                 if (rport && rport[0]!='\0') *rportval=atoi(rport);
 324                 else *rportval=5060;
 325         }
 326         param=NULL;
 327         osip_via_param_get_byname(via,"received",&param);
 328         if (param) *received=param->gvalue;
 329         else return -1;
 330         return 0;
 331 }
 332
 333 static void set_sdp(osip_message_t *sip,sdp_message_t *msg){
 334         int sdplen;
 335         char clen[10];
 336         char *sdp=NULL;
 337         sdp_message_to_str(msg,&sdp);
 338         sdplen=strlen(sdp);
 339         snprintf(clen,sizeof(clen),"%i",sdplen);
 340         osip_message_set_body(sip,sdp,sdplen);
 341         osip_message_set_content_type(sip,"application/sdp");
 342         osip_message_set_content_length(sip,clen);
 343         osip_free(sdp);
 344 }
 345
 346 static void set_sdp_from_desc(osip_message_t *sip, const SalMediaDescription *desc){
 347         sdp_message_t *msg=media_description_to_sdp(desc);
 348         if (msg==NULL) {
 349                 ms_error("Fail to print sdp message !");
 350                 return;
 351         }
 352         set_sdp(sip,msg);
 353         sdp_message_free(msg);
 354 }
 355
 356 static void sdp_process(SalOp *h){
 357         ms_message("Doing SDP offer/answer process");
 358         if (h->result){
 359                 sal_media_description_unref(h->result);
 360         }
 361         h->result=sal_media_description_new();
 362         if (h->sdp_offering){
 363                 offer_answer_initiate_outgoing(h->base.local_media,h->base.remote_media,h->result);
 364         }else{
 365                 int i;
 366                 offer_answer_initiate_incoming(h->base.local_media,h->base.remote_media,h->result);
 367                 h->sdp_answer=media_description_to_sdp(h->result);
 368                 strcpy(h->result->addr,h->base.remote_media->addr);
 369                 for(i=0;i<h->result->nstreams;++i){
 370                         if (h->result->streams[i].port>0){
 371                                 strcpy(h->result->streams[i].addr,h->base.remote_media->streams[i].addr);
 372                                 h->result->streams[i].ptime=h->base.remote_media->streams[i].ptime;
 373                                 h->result->streams[i].bandwidth=h->base.remote_media->streams[i].bandwidth;
 374                                 h->result->streams[i].port=h->base.remote_media->streams[i].port;
 375                         }
 376                 }
 377         }
 378
 379 }
 380
 381 int sal_call_set_local_media_description(SalOp *h, SalMediaDescription *desc){
 382         if (desc)
 383                 sal_media_description_ref(desc);
 384         if (h->base.local_media)
 385                 sal_media_description_unref(h->base.local_media);
 386         h->base.local_media=desc;
 387         return 0;
 388 }
 389
 390 int sal_call(SalOp *h, const char *from, const char *to){
 391         int err;
 392         osip_message_t *invite=NULL;
 393         sal_op_set_from(h,from);
 394         sal_op_set_to(h,to);
 395         sal_exosip_fix_route(h);
 396         err=eXosip_call_build_initial_invite(&invite,to,from,sal_op_get_route(h),"Phone call");
 397         if (err!=0){
 398                 ms_error("Could not create call.");
 399                 return -1;
 400         }
 401         if (h->base.contact){
 402                 _osip_list_set_empty(&invite->contacts,(void (*)(void*))osip_contact_free);
 403                 osip_message_set_contact(invite,h->base.contact);
 404         }
 405         if (h->base.root->session_expires!=0){
 406                 osip_message_set_header(invite, "Session-expires", "200");
 407                 osip_message_set_supported(invite, "timer");
 408         }
 409         if (h->base.local_media){
 410                 h->sdp_offering=TRUE;
 411                 set_sdp_from_desc(invite,h->base.local_media);
 412         }else h->sdp_offering=FALSE;
 413         eXosip_lock();
 414         err=eXosip_call_send_initial_invite(invite);
 415         eXosip_unlock();
 416         h->cid=err;
 417         if (err<0){
 418                 ms_error("Fail to send invite !");
 419                 return -1;
 420         }else{
 421                 eXosip_call_set_reference(h->cid,h);
 422         }
 423         return 0;
 424 }
 425
 426 int sal_call_notify_ringing(SalOp *h){
 427         eXosip_lock();
 428         eXosip_call_send_answer(h->tid,180,NULL);
 429         eXosip_unlock();
 430         return 0;
 431 }
 432
 433 int sal_call_accept(SalOp * h){
 434         osip_message_t *msg;
 435         const char *contact=sal_op_get_contact(h);
 436         /* sends a 200 OK */
 437         int err=eXosip_call_build_answer(h->tid,200,&msg);
 438         if (err<0 || msg==NULL){
 439                 ms_error("Fail to build answer for call: err=%i",err);
 440                 return -1;
 441         }
 442         if (h->base.root->session_expires!=0){
 443                 if (h->supports_session_timers) osip_message_set_supported(msg, "timer");
 444         }
 445
 446         if (contact) {
 447                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 448                 osip_message_set_contact(msg,contact);
 449         }
 450
 451         if (h->base.local_media){
 452                 /*this is the case where we received an invite without SDP*/
 453                 if (h->sdp_offering) {
 454                         set_sdp_from_desc(msg,h->base.local_media);
 455                 }else{
 456                         if (h->sdp_answer)
 457                                 set_sdp(msg,h->sdp_answer);
 458                 }
 459         }else{
 460                 ms_error("You are accepting a call but not defined any media capabilities !");
 461         }
 462         eXosip_call_send_answer(h->tid,200,msg);
 463         return 0;
 464 }
 465
 466 int sal_call_decline(SalOp *h, SalReason reason, const char *redirect){
 467         if (reason==SalReasonBusy){
 468                 eXosip_lock();
 469                 eXosip_call_send_answer(h->tid,486,NULL);
 470                 eXosip_unlock();
 471         }
 472         else if (reason==SalReasonTemporarilyUnavailable){
 473                 eXosip_lock();
 474                 eXosip_call_send_answer(h->tid,480,NULL);
 475                 eXosip_unlock();
 476         }else if (reason==SalReasonDoNotDisturb){
 477                 eXosip_lock();
 478                 eXosip_call_send_answer(h->tid,600,NULL);
 479                 eXosip_unlock();
 480         }else if (reason==SalReasonMedia){
 481                 eXosip_lock();
 482                 eXosip_call_send_answer(h->tid,415,NULL);
 483                 eXosip_unlock();
 484         }else if (redirect!=NULL && reason==SalReasonRedirect){
 485                 osip_message_t *msg;
 486                 int code;
 487                 if (strstr(redirect,"sip:")!=0) code=302;
 488                 else code=380;
 489                 eXosip_lock();
 490                 eXosip_call_build_answer(h->tid,code,&msg);
 491                 osip_message_set_contact(msg,redirect);
 492                 eXosip_call_send_answer(h->tid,code,msg);
 493                 eXosip_unlock();
 494         }else sal_call_terminate(h);
 495         return 0;
 496 }
 497
 498 SalMediaDescription * sal_call_get_final_media_description(SalOp *h){
 499         if (h->base.local_media && h->base.remote_media && !h->result){
 500                 sdp_process(h);
 501         }
 502         return h->result;
 503 }
 504
 505 int sal_ping(SalOp *op, const char *from, const char *to){
 506         osip_message_t *options=NULL;
 507
 508         sal_op_set_from(op,from);
 509         sal_op_set_to(op,to);
 510         eXosip_options_build_request (&options, sal_op_get_to(op),
 511                         sal_op_get_from(op),sal_op_get_route(op));
 512         if (options){
 513                 if (op->base.root->session_expires!=0){
 514                         osip_message_set_header(options, "Session-expires", "200");
 515                         osip_message_set_supported(options, "timer");
 516                 }
 517                 sal_add_other(sal_op_get_sal(op),op,options);
 518                 return eXosip_options_send_request(options);
 519         }
 520         return -1;
 521 }
 522
 523 int sal_refer(SalOp *h, const char *refer_to){
 524         osip_message_t *msg=NULL;
 525         int err=0;
 526         eXosip_lock();
 527         eXosip_call_build_refer(h->did,refer_to, &msg);
 528         if (msg) err=eXosip_call_send_request(h->did, msg);
 529         else err=-1;
 530         eXosip_unlock();
 531         return err;
 532 }
 533
 534 int sal_call_send_dtmf(SalOp *h, char dtmf){
 535         osip_message_t *msg=NULL;
 536         char dtmf_body[128];
 537         char clen[10];
 538
 539         eXosip_lock();
 540         eXosip_call_build_info(h->did,&msg);
 541         if (msg){
 542                 snprintf(dtmf_body, sizeof(dtmf_body), "Signal=%c\r\nDuration=250\r\n", dtmf);
 543                 osip_message_set_body(msg,dtmf_body,strlen(dtmf_body));
 544                 osip_message_set_content_type(msg,"application/dtmf-relay");
 545                 snprintf(clen,sizeof(clen),"%lu",(unsigned long)strlen(dtmf_body));
 546                 osip_message_set_content_length(msg,clen);
 547                 eXosip_call_send_request(h->did,msg);
 548         }
 549         eXosip_unlock();
 550         return 0;
 551 }
 552
 553 int sal_call_terminate(SalOp *h){
 554         eXosip_lock();
 555         eXosip_call_terminate(h->cid,h->did);
 556         eXosip_call_set_reference(h->cid,NULL);
 557         eXosip_unlock();
 558         return 0;
 559 }
 560
 561 void sal_op_authenticate(SalOp *h, const SalAuthInfo *info){
 562         if (h->pending_auth){
 563                 const char *userid;
 564                 if (info->userid==NULL || info->userid[0]=='\0') userid=info->username;
 565                 else userid=info->userid;
 566                 ms_message("Authentication info for %s %s added to eXosip", info->username,info->realm);
 567                 eXosip_add_authentication_info (info->username,userid,
 568                                       info->password, NULL,info->realm);
 569                 eXosip_lock();
 570                 eXosip_default_action(h->pending_auth);
 571                 eXosip_unlock();
 572                 ms_message("eXosip_default_action() done");
 573                 eXosip_clear_authentication_info();
 574                 eXosip_event_free(h->pending_auth);
 575                 sal_remove_pending_auth(sal_op_get_sal(h),h);
 576                 h->pending_auth=NULL;
 577         }
 578 }
 579
 580 static void set_network_origin(SalOp *op, osip_message_t *req){
 581         const char *received=NULL;
 582         int rport=5060;
 583         char origin[64];
 584         if (extract_received_rport(req,&received,&rport)!=0){
 585                 osip_via_t *via=NULL;
 586                 char *tmp;
 587                 osip_message_get_via(req,0,&via);
 588                 received=osip_via_get_host(via);
 589                 tmp=osip_via_get_port(via);
 590                 if (tmp) rport=atoi(tmp);
 591         }
 592         snprintf(origin,sizeof(origin)-1,"sip:%s:%i",received,rport);
 593         __sal_op_set_network_origin(op,origin);
 594 }
 595
 596 static SalOp *find_op(Sal *sal, eXosip_event_t *ev){
 597         if (ev->cid>0)
 598                 return (SalOp*)eXosip_call_get_reference(ev->cid);;
 599         if (ev->rid>0){
 600                 return sal_find_register(sal,ev->rid);
 601         }
 602         if (ev->response) return sal_find_other(sal,ev->response);
 603         return NULL;
 604 }
 605
 606 static void inc_new_call(Sal *sal, eXosip_event_t *ev){
 607         SalOp *op=sal_op_new(sal);
 608         osip_from_t *from,*to;
 609         char *tmp;
 610         sdp_message_t *sdp=eXosip_get_sdp_info(ev->request);
 611
 612         set_network_origin(op,ev->request);
 613
 614         if (sdp){
 615                 op->sdp_offering=FALSE;
 616                 op->base.remote_media=sal_media_description_new();
 617                 sdp_to_media_description(sdp,op->base.remote_media);
 618                 sdp_message_free(sdp);
 619         }else op->sdp_offering=TRUE;
 620
 621         from=osip_message_get_from(ev->request);
 622         to=osip_message_get_to(ev->request);
 623         osip_from_to_str(from,&tmp);
 624         sal_op_set_from(op,tmp);
 625         osip_free(tmp);
 626         osip_from_to_str(to,&tmp);
 627         sal_op_set_to(op,tmp);
 628         osip_free(tmp);
 629
 630         op->tid=ev->tid;
 631         op->cid=ev->cid;
 632         op->did=ev->did;
 633
 634         eXosip_call_set_reference(op->cid,op);
 635         sal->callbacks.call_received(op);
 636 }
 637
 638 static void handle_reinvite(Sal *sal,  eXosip_event_t *ev){
 639         SalOp *op=find_op(sal,ev);
 640         sdp_message_t *sdp;
 641         osip_message_t *msg=NULL;
 642
 643         if (op==NULL) {
 644                 ms_warning("Reinvite for non-existing operation !");
 645                 return;
 646         }
 647         op->reinvite=TRUE;
 648         op->tid=ev->tid;
 649         sdp=eXosip_get_sdp_info(ev->request);
 650         if (op->base.remote_media){
 651                 sal_media_description_unref(op->base.remote_media);
 652                 op->base.remote_media=NULL;
 653         }
 654         eXosip_lock();
 655         eXosip_call_build_answer(ev->tid,200,&msg);
 656         eXosip_unlock();
 657         if (msg==NULL) return;
 658         if (op->base.root->session_expires!=0){
 659                 if (op->supports_session_timers) osip_message_set_supported(msg, "timer");
 660         }
 661         if (op->base.contact){
 662                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 663                 osip_message_set_contact(msg,op->base.contact);
 664         }
 665         if (sdp){
 666                 op->sdp_offering=FALSE;
 667                 op->base.remote_media=sal_media_description_new();
 668                 sdp_to_media_description(sdp,op->base.remote_media);
 669                 sdp_message_free(sdp);
 670                 sdp_process(op);
 671                 set_sdp(msg,op->sdp_answer);
 672         }else {
 673                 op->sdp_offering=TRUE;
 674                 set_sdp_from_desc(msg,op->base.local_media);
 675         }
 676         eXosip_lock();
 677         eXosip_call_send_answer(ev->tid,200,msg);
 678         eXosip_unlock();
 679 }
 680
 681 static void handle_ack(Sal *sal,  eXosip_event_t *ev){
 682         SalOp *op=find_op(sal,ev);
 683         sdp_message_t *sdp;
 684
 685         if (op==NULL) {
 686                 ms_warning("ack for non-existing call !");
 687                 return;
 688         }
 689         sdp=eXosip_get_sdp_info(ev->ack);
 690         if (sdp){
 691                 op->base.remote_media=sal_media_description_new();
 692                 sdp_to_media_description(sdp,op->base.remote_media);
 693                 sdp_process(op);
 694                 sdp_message_free(sdp);
 695         }
 696         if (op->reinvite){
 697                 sal->callbacks.call_updated(op);
 698                 op->reinvite=FALSE;
 699         }else{
 700                 sal->callbacks.call_ack(op);
 701         }
 702 }
 703
 704 static void update_contact_from_response(SalOp *op, osip_message_t *response){
 705         const char *received;
 706         int rport;
 707         if (extract_received_rport(response,&received,&rport)==0){
 708                 const char *contact=sal_op_get_contact(op);
 709                 if (!contact){
 710                         /*no contact given yet, use from instead*/
 711                         contact=sal_op_get_from(op);
 712                 }
 713                 if (contact){
 714                         SalAddress *addr=sal_address_new(contact);
 715                         char *tmp;
 716                         sal_address_set_domain(addr,received);
 717                         sal_address_set_port_int(addr,rport);
 718                         tmp=sal_address_as_string(addr);
 719                         ms_message("Contact address updated to %s for this dialog",tmp);
 720                         sal_op_set_contact(op,tmp);
 721                         ms_free(tmp);
 722                 }
 723         }
 724 }
 725
 726 static int call_proceeding(Sal *sal, eXosip_event_t *ev){
 727         SalOp *op=find_op(sal,ev);
 728
 729         if (op==NULL) {
 730                 ms_warning("This call has been canceled.");
 731                 eXosip_lock();
 732                 eXosip_call_terminate(ev->cid,ev->did);
 733                 eXosip_unlock();
 734                 return -1;
 735         }
 736         op->did=ev->did;
 737         op->tid=ev->tid;
 738
 739         /* update contact if received and rport are set by the server
 740          note: will only be used by remote for next INVITE, if any...*/
 741         update_contact_from_response(op,ev->response);
 742         return 0;
 743 }
 744
 745 static void call_ringing(Sal *sal, eXosip_event_t *ev){
 746         sdp_message_t *sdp;
 747         SalOp *op;
 748         if (call_proceeding(sal, ev)==-1) return;
 749         op=(SalOp*)ev->external_reference;
 750         sdp=eXosip_get_sdp_info(ev->response);
 751         if (sdp){
 752                 op->base.remote_media=sal_media_description_new();
 753                 sdp_to_media_description(sdp,op->base.remote_media);
 754                 sdp_message_free(sdp);
 755                 if (op->base.local_media) sdp_process(op);
 756         }
 757         sal->callbacks.call_ringing(op);
 758 }
 759
 760 static void call_accepted(Sal *sal, eXosip_event_t *ev){
 761         sdp_message_t *sdp;
 762         osip_message_t *msg=NULL;
 763         SalOp *op=find_op(sal,ev);
 764         const char *contact;
 765
 766         if (op==NULL){
 767                 ms_error("A closed call is accepted ?");
 768                 return;
 769         }
 770         sdp=eXosip_get_sdp_info(ev->response);
 771         if (sdp){
 772                 op->base.remote_media=sal_media_description_new();
 773                 sdp_to_media_description(sdp,op->base.remote_media);
 774                 sdp_message_free(sdp);
 775                 if (op->base.local_media) sdp_process(op);
 776         }
 777         eXosip_call_build_ack(ev->did,&msg);
 778         contact=sal_op_get_contact(op);
 779         if (contact) {
 780                 _osip_list_set_empty(&msg->contacts,(void (*)(void*))osip_contact_free);
 781                 osip_message_set_contact(msg,contact);
 782         }
 783         if (op->sdp_answer)
 784                         set_sdp(msg,op->sdp_answer);
 785         eXosip_call_send_ack(ev->did,msg);
 786         sal->callbacks.call_accepted(op);
 787 }
 788
 789 static void call_terminated(Sal *sal, eXosip_event_t *ev){
 790         char *from;
 791         SalOp *op=find_op(sal,ev);
 792         if (op==NULL){
 793                 ms_warning("Call terminated for already closed call ?");
 794                 return;
 795         }
 796         osip_from_to_str(ev->request->from,&from);
 797         eXosip_call_set_reference(ev->cid,NULL);
 798         op->cid=-1;
 799         sal->callbacks.call_terminated(op,from);
 800         osip_free(from);
 801 }
 802
 803 static void call_released(Sal *sal, eXosip_event_t *ev){
 804         SalOp *op=find_op(sal,ev);
 805         if (op==NULL){
 806                 return;
 807         }
 808         op->cid=-1;
 809         if (op->did==-1)
 810                 sal->callbacks.call_failure(op,SalErrorNoResponse,SalReasonUnknown,NULL);
 811 }
 812
 813 static int get_auth_data_from_response(osip_message_t *resp, const char **realm, const char **username){
 814         const char *prx_realm=NULL,*www_realm=NULL;
 815         osip_proxy_authenticate_t *prx_auth;
 816         osip_www_authenticate_t *www_auth;
 817
 818         *username=osip_uri_get_username(resp->from->url);
 819         prx_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->proxy_authenticates,0);
 820         www_auth=(osip_proxy_authenticate_t*)osip_list_get(&resp->www_authenticates,0);
 821         if (prx_auth!=NULL)
 822                 prx_realm=osip_proxy_authenticate_get_realm(prx_auth);
 823         if (www_auth!=NULL)
 824                 www_realm=osip_www_authenticate_get_realm(www_auth);
 825
 826         if (prx_realm){
 827                 *realm=prx_realm;
 828         }else if (www_realm){
 829                 *realm=www_realm;
 830         }else{
 831                 return -1;
 832         }
 833         return 0;
 834 }
 835
 836 static int get_auth_data_from_request(osip_message_t *msg, const char **realm, const char **username){
 837         osip_authorization_t *auth=NULL;
 838         osip_proxy_authorization_t *prx_auth=NULL;
 839
 840         *username=osip_uri_get_username(msg->from->url);
 841         osip_message_get_authorization(msg, 0, &auth);
 842         if (auth){
 843                 *realm=osip_authorization_get_realm(auth);
 844                 return 0;
 845         }
 846         osip_message_get_proxy_authorization(msg,0,&prx_auth);
 847         if (prx_auth){
 848                 *realm=osip_proxy_authorization_get_realm(prx_auth);
 849                 return 0;
 850         }
 851         return -1;
 852 }
 853
 854 static int get_auth_data(eXosip_event_t *ev, const char **realm, const char **username){
 855         if (ev->response && get_auth_data_from_response(ev->response,realm,username)==0) return 0;
 856         if (ev->request && get_auth_data_from_request(ev->request,realm,username)==0) return 0;
 857         return -1;
 858 }
 859
 860 int sal_op_get_auth_requested(SalOp *op, const char **realm, const char **username){
 861         if (op->pending_auth){
 862                 return get_auth_data(op->pending_auth,realm,username);
 863         }
 864         return -1;
 865 }
 866
 867 static bool_t process_authentication(Sal *sal, eXosip_event_t *ev){
 868         SalOp *op;
 869         const char *username,*realm;
 870         op=find_op(sal,ev);
 871         if (op==NULL){
 872                 ms_warning("No operation associated with this authentication !");
 873                 return TRUE;
 874         }
 875         if (get_auth_data(ev,&realm,&username)==0){
 876                 if (op->pending_auth!=NULL)
 877                         eXosip_event_free(op->pending_auth);
 878                 op->pending_auth=ev;
 879                 sal_add_pending_auth (sal,op);
 880                 sal->callbacks.auth_requested(op,realm,username);
 881                 return FALSE;
 882         }
 883         return TRUE;
 884 }
 885
 886 static void authentication_ok(Sal *sal, eXosip_event_t *ev){
 887         SalOp *op;
 888         const char *username,*realm;
 889         op=find_op(sal,ev);
 890         if (op==NULL){
 891                 ms_warning("No operation associated with this authentication_ok!");
 892                 return ;
 893         }
 894         if (get_auth_data(ev,&realm,&username)==0){
 895                 sal->callbacks.auth_success(op,realm,username);
 896         }
 897 }
 898
 899 static bool_t call_failure(Sal *sal, eXosip_event_t *ev){
 900         SalOp *op;
 901         int code=0;
 902         const char *reason=NULL;
 903         SalError error=SalErrorUnknown;
 904         SalReason sr=SalReasonUnknown;
 905
 906         op=(SalOp*)ev->external_reference;
 907
 908         if (op==NULL) {
 909                 ms_warning("Call failure reported for a closed call, ignored.");
 910                 return TRUE;
 911         }
 912
 913         if (ev->response){
 914                 code=osip_message_get_status_code(ev->response);
 915                 reason=osip_message_get_reason_phrase(ev->response);
 916         }
 917         switch(code)
 918         {
 919                 case 401:
 920                 case 407:
 921                         return process_authentication(sal,ev);
 922                         break;
 923                 case 400:
 924                         error=SalErrorUnknown;
 925                 break;
 926                 case 404:
 927                         error=SalErrorFailure;
 928                         sr=SalReasonNotFound;
 929                 break;
 930                 case 415:
 931                         error=SalErrorFailure;
 932                         sr=SalReasonMedia;
 933                 break;
 934                 case 422:
 935                         eXosip_default_action(ev);
 936                         return TRUE;
 937                 break;
 938                 case 480:
 939                         error=SalErrorFailure;
 940                         sr=SalReasonTemporarilyUnavailable;
 941                 case 486:
 942                         error=SalErrorFailure;
 943                         sr=SalReasonBusy;
 944                 break;
 945                 case 487:
 946                 break;
 947                 case 600:
 948                         error=SalErrorFailure;
 949                         sr=SalReasonDoNotDisturb;
 950                 break;
 951                 case 603:
 952                         error=SalErrorFailure;
 953                         sr=SalReasonDeclined;
 954                 break;
 955                 default:
 956                         if (code>0){
 957                                 error=SalErrorFailure;
 958                                 sr=SalReasonUnknown;
 959                         }else error=SalErrorNoResponse;
 960         }
 961         if (code!=487) sal->callbacks.call_failure(op,error,sr,reason);
 962         return TRUE;
 963 }
 964
 965
 966 static void process_media_control_xml(Sal *sal, eXosip_event_t *ev){
 967         SalOp *op=(SalOp*)ev->external_reference;
 968         osip_body_t *body=NULL;
 969
 970         if (op==NULL){
 971                 ms_warning("media control xml received without operation context!");
 972                 return ;
 973         }
 974
 975         osip_message_get_body(ev->request,0,&body);
 976         if (body && body->body!=NULL &&
 977                 strstr(body->body,"picture_fast_update")){
 978                 osip_message_t *ans=NULL;
 979                 ms_message("Receiving VFU request !");
 980                 if (sal->callbacks.vfu_request){
 981                         sal->callbacks.vfu_request(op);
 982                         eXosip_call_build_answer(ev->tid,200,&ans);
 983                         if (ans)
 984                                 eXosip_call_send_answer(ev->tid,200,ans);
 985                 }
 986         }
 987 }
 988
 989 static void process_dtmf_relay(Sal *sal, eXosip_event_t *ev){
 990         SalOp *op=(SalOp*)ev->external_reference;
 991         osip_body_t *body=NULL;
 992
 993         if (op==NULL){
 994                 ms_warning("media dtmf relay received without operation context!");
 995                 return ;
 996         }
 997
 998         osip_message_get_body(ev->request,0,&body);
 999         if (body && body->body!=NULL){
1000                 osip_message_t *ans=NULL;
1001                 const char *name=strstr(body->body,"Signal");
1002                 if (name==NULL) name=strstr(body->body,"signal");
1003                 if (name==NULL) {
1004                         ms_warning("Could not extract the dtmf name from the SIP INFO.");
1005                 }else{
1006                         char tmp[2];
1007                         name+=strlen("signal");
1008                         if (sscanf(name," = %1s",tmp)==1){
1009                                 ms_message("Receiving dtmf %s via SIP INFO.",tmp);
1010                                 if (sal->callbacks.dtmf_received != NULL)
1011                                         sal->callbacks.dtmf_received(op, tmp[0]);
1012                         }
1013                 }
1014                 eXosip_call_build_answer(ev->tid,200,&ans);
1015                 if (ans)
1016                         eXosip_call_send_answer(ev->tid,200,ans);
1017         }
1018 }
1019
1020 static void call_message_new(Sal *sal, eXosip_event_t *ev){
1021         osip_message_t *ans=NULL;
1022         if (ev->request){
1023                 if (MSG_IS_INFO(ev->request)){
1024                         osip_content_type_t *ct;
1025                         ct=osip_message_get_content_type(ev->request);
1026                         if (ct && ct->subtype){
1027                                 if (strcmp(ct->subtype,"media_control+xml")==0)
1028                                         process_media_control_xml(sal,ev);
1029                                 else if (strcmp(ct->subtype,"dtmf-relay")==0)
1030                                         process_dtmf_relay(sal,ev);
1031                                 else {
1032                                         ms_message("Unhandled SIP INFO.");
1033                                         /*send an "Not implemented" answer*/
1034                                         eXosip_lock();
1035                                         eXosip_call_build_answer(ev->tid,501,&ans);
1036                                         if (ans)
1037                                                 eXosip_call_send_answer(ev->tid,501,ans);
1038                                         eXosip_unlock();
1039                                 }
1040                         }else{
1041                                 /*empty SIP INFO, probably to test we are alive. Send an empty answer*/
1042                                 eXosip_lock();
1043                                 eXosip_call_build_answer(ev->tid,200,&ans);
1044                                 if (ans)
1045                                         eXosip_call_send_answer(ev->tid,200,ans);
1046                                 eXosip_unlock();
1047                         }
1048                 }
1049         }else ms_warning("call_message_new: No request ?");
1050 }
1051
1052 static void inc_update(Sal *sal, eXosip_event_t *ev){
1053         osip_message_t *msg=NULL;
1054         ms_message("Processing incoming UPDATE");
1055         eXosip_lock();
1056         eXosip_message_build_answer(ev->tid,200,&msg);
1057         if (msg!=NULL)
1058                 eXosip_message_send_answer(ev->tid,200,msg);
1059         eXosip_unlock();
1060 }
1061
1062 static bool_t comes_from_local_if(osip_message_t *msg){
1063         osip_via_t *via=NULL;
1064         osip_message_get_via(msg,0,&via);
1065         if (via){
1066                 const char *host;
1067                 host=osip_via_get_host(via);
1068                 if (strcmp(host,"127.0.0.1")==0 || strcmp(host,"::1")==0){
1069                         osip_generic_param_t *param=NULL;
1070                         osip_via_param_get_byname(via,"received",&param);
1071                         if (param==NULL) return TRUE;
1072                         if (param->gvalue &&
1073                                 (strcmp(param->gvalue,"127.0.0.1")==0 || strcmp(param->gvalue,"::1")==0)){
1074                                 return TRUE;
1075                         }
1076                 }
1077         }
1078         return FALSE;
1079 }
1080
1081 static void text_received(Sal *sal, eXosip_event_t *ev){
1082         osip_body_t *body=NULL;
1083         char *from=NULL,*msg;
1084
1085         osip_message_get_body(ev->request,0,&body);
1086         if (body==NULL){
1087                 ms_error("Could not get text message from SIP body");
1088                 return;
1089         }
1090         msg=body->body;
1091         osip_from_to_str(ev->request->from,&from);
1092         sal->callbacks.text_received(sal,from,msg);
1093         osip_free(from);
1094 }
1095
1096 static void other_request(Sal *sal, eXosip_event_t *ev){
1097         ms_message("in other_request");
1098         if (ev->request==NULL) return;
1099         if (strcmp(ev->request->sip_method,"MESSAGE")==0){
1100                 text_received(sal,ev);
1101                 eXosip_message_send_answer(ev->tid,200,NULL);
1102         }else if (strcmp(ev->request->sip_method,"OPTIONS")==0){
1103                 osip_message_t *options=NULL;
1104                 eXosip_options_build_answer(ev->tid,200,&options);
1105                 osip_message_set_allow(options,"INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, SUBSCRIBE, NOTIFY, INFO");
1106                 osip_message_set_accept(options,"application/sdp");
1107                 eXosip_options_send_answer(ev->tid,200,options);
1108         }else if (strcmp(ev->request->sip_method,"WAKEUP")==0
1109                 && comes_from_local_if(ev->request)) {
1110                 eXosip_message_send_answer(ev->tid,200,NULL);
1111                 ms_message("Receiving WAKEUP request !");
1112                 sal->callbacks.internal_message(sal,"WAKEUP");
1113         }else if (strncmp(ev->request->sip_method, "REFER", 5) == 0){
1114                 ms_message("Receiving REFER request !");
1115                 if (comes_from_local_if(ev->request)) {
1116                         osip_header_t *h=NULL;
1117                         osip_message_header_get_byname(ev->request,"Refer-To",0,&h);
1118                         eXosip_message_send_answer(ev->tid,200,NULL);
1119                         if (h){
1120                                 sal->callbacks.refer_received(sal,NULL,h->hvalue);
1121                         }
1122                 }else ms_warning("Ignored REFER not coming from this local loopback interface.");
1123         }else if (strncmp(ev->request->sip_method, "UPDATE", 6) == 0){
1124                 inc_update(sal,ev);
1125     }else {
1126                 char *tmp=NULL;
1127                 size_t msglen=0;
1128                 osip_message_to_str(ev->request,&tmp,&msglen);
1129                 if (tmp){
1130                         ms_message("Unsupported request received:\n%s",tmp);
1131                         osip_free(tmp);
1132                 }
1133                 /*answer with a 501 Not implemented*/
1134                 eXosip_message_send_answer(ev->tid,501,NULL);
1135         }
1136 }
1137
1138 static void masquerade_via(osip_message_t *msg, const char *ip, const char *port){
1139         osip_via_t *via=NULL;
1140         osip_message_get_via(msg,0,&via);
1141         if (via){
1142                 osip_free(via->port);
1143                 via->port=osip_strdup(port);
1144                 osip_free(via->host);
1145                 via->host=osip_strdup(ip);
1146         }
1147 }
1148
1149 static bool_t register_again_with_updated_contact(SalOp *op, osip_message_t *orig_request, osip_message_t *last_answer){
1150         osip_message_t *msg;
1151         const char *received;
1152         int rport;
1153         osip_contact_t *ctt=NULL;
1154         char *tmp;
1155         char port[20];
1156
1157         if (extract_received_rport(last_answer,&received,&rport)==-1) return FALSE;
1158         osip_message_get_contact(orig_request,0,&ctt);
1159         if (strcmp(ctt->url->host,received)==0){
1160                 /*ip address matches, check ports*/
1161                 const char *contact_port=ctt->url->port;
1162                 if (contact_port==NULL || contact_port[0]=='\0')
1163                         contact_port="5060";
1164                 if (atoi(contact_port)==rport){
1165                         ms_message("Register has up to date contact, doing nothing.");
1166                         return FALSE;
1167                 }else ms_message("ports do not match, need to update the register (%s <> %i)", contact_port,rport);
1168         }
1169         eXosip_lock();
1170         msg=NULL;
1171         eXosip_register_build_register(op->rid,op->expires,&msg);
1172         if (msg==NULL){
1173                 eXosip_unlock();
1174                 ms_warning("Fail to create a contact updated register.");
1175                 return FALSE;
1176         }
1177         osip_message_get_contact(msg,0,&ctt);
1178         if (ctt->url->host!=NULL){
1179                 osip_free(ctt->url->host);
1180         }
1181         ctt->url->host=osip_strdup(received);
1182         if (ctt->url->port!=NULL){
1183                 osip_free(ctt->url->port);
1184         }
1185         snprintf(port,sizeof(port),"%i",rport);
1186         ctt->url->port=osip_strdup(port);
1187         masquerade_via(msg,received,port);
1188         eXosip_register_send_register(op->rid,msg);
1189         eXosip_unlock();
1190         osip_contact_to_str(ctt,&tmp);
1191         sal_op_set_contact(op,tmp);
1192         ms_message("Resending new register with updated contact %s",tmp);
1193         ms_free(tmp);
1194         return TRUE;
1195 }
1196
1197 static void registration_success(Sal *sal, eXosip_event_t *ev){
1198         SalOp *op=sal_find_register(sal,ev->rid);
1199         osip_header_t *h=NULL;
1200         bool_t registered;
1201         if (op==NULL){
1202                 ms_error("Receiving register response for unknown operation");
1203                 return;
1204         }
1205         osip_message_get_expires(ev->request,0,&h);
1206         if (h!=NULL && atoi(h->hvalue)!=0){
1207                 registered=TRUE;
1208                 if (!register_again_with_updated_contact(op,ev->request,ev->response)){
1209                         sal->callbacks.register_success(op,registered);
1210                 }
1211         }else registered=FALSE;
1212 }
1213
1214 static bool_t registration_failure(Sal *sal, eXosip_event_t *ev){
1215         int status_code=0;
1216         const char *reason=NULL;
1217         SalOp *op=sal_find_register(sal,ev->rid);
1218         SalReason sr=SalReasonUnknown;
1219         SalError se=SalErrorUnknown;
1220
1221         if (op==NULL){
1222                 ms_error("Receiving register failure for unknown operation");
1223                 return TRUE;
1224         }
1225         if (ev->response){
1226                 status_code=osip_message_get_status_code(ev->response);
1227                 reason=osip_message_get_reason_phrase(ev->response);
1228         }else return TRUE;
1229         switch(status_code){
1230                 case 401:
1231                 case 407:
1232                         return process_authentication(sal,ev);
1233                         break;
1234                 default:
1235                         /* if contact is up to date, process the failure, otherwise resend a new register with
1236                                 updated contact first, just in case the faillure is due to incorrect contact */
1237                         if (register_again_with_updated_contact(op,ev->request,ev->response))
1238                                 return TRUE; /*we are retrying with an updated contact*/
1239                         if (status_code==403){
1240                                 se=SalErrorFailure;
1241                                 sr=SalReasonForbidden;
1242                         }else if (status_code==0){
1243                                 se=SalErrorNoResponse;
1244                         }
1245                         sal->callbacks.register_failure(op,se,sr,reason);
1246         }
1247         return TRUE;
1248 }
1249
1250 static void other_request_reply(Sal *sal,eXosip_event_t *ev){
1251         SalOp *op=find_op(sal,ev);
1252
1253         if (op==NULL){
1254                 ms_warning("other_request_reply(): Receiving response to unknown request.");
1255                 return;
1256         }
1257         if (ev->response){
1258                 update_contact_from_response(op,ev->response);
1259                 sal->callbacks.ping_reply(op);
1260         }
1261 }
1262
1263 static bool_t process_event(Sal *sal, eXosip_event_t *ev){
1264         switch(ev->type){
1265                 case EXOSIP_CALL_ANSWERED:
1266                         ms_message("CALL_ANSWERED\n");
1267                         call_accepted(sal,ev);
1268                         authentication_ok(sal,ev);
1269                         break;
1270                 case EXOSIP_CALL_CLOSED:
1271                 case EXOSIP_CALL_CANCELLED:
1272                         ms_message("CALL_CLOSED or CANCELLED\n");
1273                         call_terminated(sal,ev);
1274                         break;
1275                 case EXOSIP_CALL_TIMEOUT:
1276                 case EXOSIP_CALL_NOANSWER:
1277                         ms_message("CALL_TIMEOUT or NOANSWER\n");
1278                         return call_failure(sal,ev);
1279                         break;
1280                 case EXOSIP_CALL_REQUESTFAILURE:
1281                 case EXOSIP_CALL_GLOBALFAILURE:
1282                 case EXOSIP_CALL_SERVERFAILURE:
1283                         ms_message("CALL_REQUESTFAILURE or GLOBALFAILURE or SERVERFAILURE\n");
1284                         return call_failure(sal,ev);
1285                         break;
1286                 case EXOSIP_CALL_INVITE:
1287                         ms_message("CALL_NEW\n");
1288                         inc_new_call(sal,ev);
1289                         break;
1290                 case EXOSIP_CALL_REINVITE:
1291                         handle_reinvite(sal,ev);
1292                         break;
1293                 case EXOSIP_CALL_ACK:
1294                         ms_message("CALL_ACK");
1295                         handle_ack(sal,ev);
1296                         break;
1297                 case EXOSIP_CALL_REDIRECTED:
1298                         ms_message("CALL_REDIRECTED");
1299                         eXosip_default_action(ev);
1300                         break;
1301                 case EXOSIP_CALL_PROCEEDING:
1302                         ms_message("CALL_PROCEEDING");
1303                         call_proceeding(sal,ev);
1304                         break;
1305                 case EXOSIP_CALL_RINGING:
1306                         ms_message("CALL_RINGING");
1307                         call_ringing(sal,ev);
1308                         break;
1309                 case EXOSIP_CALL_MESSAGE_NEW:
1310                         ms_message("EXOSIP_CALL_MESSAGE_NEW");
1311                         call_message_new(sal,ev);
1312                         break;
1313                 case EXOSIP_CALL_MESSAGE_REQUESTFAILURE:
1314                         if (ev->did<0 && ev->response &&
1315                                 (ev->response->status_code==407 || ev->response->status_code==401)){
1316                                  return process_authentication(sal,ev);
1317                         }
1318                         break;
1319                 case EXOSIP_IN_SUBSCRIPTION_NEW:
1320                         ms_message("CALL_IN_SUBSCRIPTION_NEW ");
1321                         sal_exosip_subscription_recv(sal,ev);
1322                         break;
1323                 case EXOSIP_IN_SUBSCRIPTION_RELEASED:
1324                         ms_message("CALL_SUBSCRIPTION_NEW ");
1325                         sal_exosip_in_subscription_closed(sal,ev);
1326                         break;
1327                 case EXOSIP_SUBSCRIPTION_UPDATE:
1328                         ms_message("CALL_SUBSCRIPTION_UPDATE");
1329                         break;
1330                 case EXOSIP_SUBSCRIPTION_NOTIFY:
1331                         ms_message("CALL_SUBSCRIPTION_NOTIFY");
1332                         sal_exosip_notify_recv(sal,ev);
1333                         break;
1334                 case EXOSIP_SUBSCRIPTION_ANSWERED:
1335                         ms_message("EXOSIP_SUBSCRIPTION_ANSWERED, ev->sid=%i, ev->did=%i\n",ev->sid,ev->did);
1336                         sal_exosip_subscription_answered(sal,ev);
1337                         break;
1338                 case EXOSIP_SUBSCRIPTION_CLOSED:
1339                         ms_message("EXOSIP_SUBSCRIPTION_CLOSED\n");
1340                         sal_exosip_subscription_closed(sal,ev);
1341                         break;
1342                 case EXOSIP_SUBSCRIPTION_REQUESTFAILURE:   /**< announce a request failure      */
1343                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1344                                 return process_authentication(sal,ev);
1345                         }
1346         case EXOSIP_SUBSCRIPTION_SERVERFAILURE:
1347                 case EXOSIP_SUBSCRIPTION_GLOBALFAILURE:
1348                         sal_exosip_subscription_closed(sal,ev);
1349                         break;
1350                 case EXOSIP_CALL_RELEASED:
1351                         ms_message("CALL_RELEASED\n");
1352                         call_released(sal, ev);
1353                         break;
1354                 case EXOSIP_REGISTRATION_FAILURE:
1355                         ms_message("REGISTRATION_FAILURE\n");
1356                         return registration_failure(sal,ev);
1357                         break;
1358                 case EXOSIP_REGISTRATION_SUCCESS:
1359                         authentication_ok(sal,ev);
1360                         registration_success(sal,ev);
1361                         break;
1362                 case EXOSIP_MESSAGE_NEW:
1363                         other_request(sal,ev);
1364                         break;
1365                 case EXOSIP_MESSAGE_PROCEEDING:
1366                 case EXOSIP_MESSAGE_ANSWERED:
1367                 case EXOSIP_MESSAGE_REDIRECTED:
1368                 case EXOSIP_MESSAGE_SERVERFAILURE:
1369                 case EXOSIP_MESSAGE_GLOBALFAILURE:
1370                         other_request_reply(sal,ev);
1371                         break;
1372                 case EXOSIP_MESSAGE_REQUESTFAILURE:
1373                         if (ev->response && (ev->response->status_code == 407 || ev->response->status_code == 401)){
1374                                 return process_authentication(sal,ev);
1375                         }
1376                         break;
1377                 default:
1378                         ms_message("Unhandled exosip event ! %i",ev->type);
1379                         break;
1380         }
1381         return TRUE;
1382 }
1383
1384 int sal_iterate(Sal *sal){
1385         eXosip_event_t *ev;
1386         while((ev=eXosip_event_wait(0,0))!=NULL){
1387                 if (process_event(sal,ev))
1388                         eXosip_event_free(ev);
1389         }
1390         eXosip_lock();
1391         eXosip_automatic_refresh();
1392         eXosip_unlock();
1393         return 0;
1394 }
1395
1396 int sal_register(SalOp *h, const char *proxy, const char *from, int expires){
1397         osip_message_t *msg;
1398         sal_op_set_route(h,proxy);
1399         if (h->rid==-1){
1400                 eXosip_lock();
1401                 h->rid=eXosip_register_build_initial_register(from,proxy,sal_op_get_contact(h),expires,&msg);
1402                 sal_add_register(h->base.root,h);
1403         }else{
1404                 eXosip_lock();
1405                 eXosip_register_build_register(h->rid,expires,&msg);
1406         }
1407         eXosip_register_send_register(h->rid,msg);
1408         eXosip_unlock();
1409         h->expires=expires;
1410         return 0;
1411 }
1412
1413 int sal_unregister(SalOp *h){
1414         osip_message_t *msg=NULL;
1415         eXosip_lock();
1416         eXosip_register_build_register(h->rid,0,&msg);
1417         if (msg) eXosip_register_send_register(h->rid,msg);
1418         else ms_warning("Could not build unREGISTER !");
1419         eXosip_unlock();
1420         return 0;
1421 }
1422
1423
1424
1425 SalAddress * sal_address_new(const char *uri){
1426         osip_from_t *from;
1427         osip_from_init(&from);
1428         if (osip_from_parse(from,uri)!=0){
1429                 osip_from_free(from);
1430                 return NULL;
1431         }
1432         return (SalAddress*)from;
1433 }
1434
1435 SalAddress * sal_address_clone(const SalAddress *addr){
1436         osip_from_t *ret=NULL;
1437         osip_from_clone((osip_from_t*)addr,&ret);
1438         return (SalAddress*)ret;
1439 }
1440
1441 #define null_if_empty(s) (((s)!=NULL && (s)[0]!='\0') ? (s) : NULL )
1442
1443 const char *sal_address_get_scheme(const SalAddress *addr){
1444         const osip_from_t *u=(const osip_from_t*)addr;
1445         return null_if_empty(u->url->scheme);
1446 }
1447
1448 const char *sal_address_get_display_name(const SalAddress* addr){
1449         const osip_from_t *u=(const osip_from_t*)addr;
1450         return null_if_empty(u->displayname);
1451 }
1452
1453 const char *sal_address_get_username(const SalAddress *addr){
1454         const osip_from_t *u=(const osip_from_t*)addr;
1455         return null_if_empty(u->url->username);
1456 }
1457
1458 const char *sal_address_get_domain(const SalAddress *addr){
1459         const osip_from_t *u=(const osip_from_t*)addr;
1460         return null_if_empty(u->url->host);
1461 }
1462
1463 void sal_address_set_display_name(SalAddress *addr, const char *display_name){
1464         osip_from_t *u=(osip_from_t*)addr;
1465         if (u->displayname!=NULL){
1466                 osip_free(u->displayname);
1467                 u->displayname=NULL;
1468         }
1469         if (display_name!=NULL)
1470                 u->displayname=osip_strdup(display_name);
1471 }
1472
1473 void sal_address_set_username(SalAddress *addr, const char *username){
1474         osip_from_t *uri=(osip_from_t*)addr;
1475         if (uri->url->username!=NULL){
1476                 osip_free(uri->url->username);
1477                 uri->url->username=NULL;
1478         }
1479         if (username)
1480                 uri->url->username=osip_strdup(username);
1481 }
1482
1483 void sal_address_set_domain(SalAddress *addr, const char *host){
1484         osip_from_t *uri=(osip_from_t*)addr;
1485         if (uri->url->host!=NULL){
1486                 osip_free(uri->url->host);
1487                 uri->url->host=NULL;
1488         }
1489         if (host)
1490                 uri->url->host=osip_strdup(host);
1491 }
1492
1493 void sal_address_set_port(SalAddress *addr, const char *port){
1494         osip_from_t *uri=(osip_from_t*)addr;
1495         if (uri->url->port!=NULL){
1496                 osip_free(uri->url->port);
1497                 uri->url->port=NULL;
1498         }
1499         if (port)
1500                 uri->url->port=osip_strdup(port);
1501 }
1502
1503 void sal_address_set_port_int(SalAddress *uri, int port){
1504         char tmp[12];
1505         if (port==5060){
1506                 /*this is the default, special case to leave the port field blank*/
1507                 sal_address_set_port(uri,NULL);
1508                 return;
1509         }
1510         snprintf(tmp,sizeof(tmp),"%i",port);
1511         sal_address_set_port(uri,tmp);
1512 }
1513
1514 void sal_address_clean(SalAddress *addr){
1515         osip_generic_param_freelist(& ((osip_from_t*)addr)->gen_params);
1516 }
1517
1518 char *sal_address_as_string(const SalAddress *u){
1519         char *tmp,*ret;
1520         osip_from_to_str((osip_from_t*)u,&tmp);
1521         ret=ms_strdup(tmp);
1522         osip_free(tmp);
1523         return ret;
1524 }
1525
1526 char *sal_address_as_string_uri_only(const SalAddress *u){
1527         char *tmp=NULL,*ret;
1528         osip_uri_to_str(((osip_from_t*)u)->url,&tmp);
1529         ret=ms_strdup(tmp);
1530         osip_free(tmp);
1531         return ret;
1532 }
1533
1534 void sal_address_destroy(SalAddress *u){
1535         osip_from_free((osip_from_t*)u);
1536 }
1537